more and more bugs

* squashy squash

* squassshheee

CLOSES #128
CLOSES #114
CLOSES #113
CLOSES #111
CLOSES #110
CLOSES #109
CLOSES #107
CLOSES #106
CLOSES #105
CLOSES #90
CLOSES #103

* brock guy fix

CLOSES #39

.github/workflows/release.yml

@@ -1,7 +1,7 @@
 name: Release
 
-# Builds the macOS and Windows desktop apps on the self-hosted Mac runner
-# and publishes them as a GitHub Release.
+# Builds the macOS, Windows, and Linux desktop apps plus an Android APK
+# on the self-hosted Mac runner, and publishes them as a GitHub Release.
 #
 # Versioning:
 #   - First ever release is 0.1.0.
@@ -152,14 +152,20 @@ jobs:
           echo "Identities available to codesign:"
           security find-identity -v -p codesigning "$KEYCHAIN_PATH"
 
-      - name: Build macOS + Windows
+      - name: Build macOS + Windows + Linux
         run: |
           set -euo pipefail
           # Sign in-build (identity auto-detected from the temp keychain);
           # notarize separately below so it uses secret credentials, not a
-          # login-keychain profile.
+          # login-keychain profile. "all" also builds the Linux AppImage,
+          # which needs no signing/notarization.
           scripts/build.sh all --version "${{ steps.ver.outputs.version }}" --no-notarize
 
+      - name: Build Android
+        run: |
+          set -euo pipefail
+          scripts/build_android.sh --version "${{ steps.ver.outputs.version }}"
+
       - name: Notarize & staple macOS app
         run: |
           set -euo pipefail
@@ -171,8 +177,8 @@ jobs:
           set -a; . "$ci_dir/notary.env"; set +a
           echo "::add-mask::$APPLE_APP_PASSWORD"
 
-          app=".bazinga/work/PokemonRed.app"
-          zip="dist/mac/PokemonRed-macos.zip"
+          app=".bazinga/work/gen1recomp.app"
+          zip="dist/mac/gen1recomp-macos.zip"
           [ -d "$app" ] || { echo "::error::signed app not found at $app"; exit 1; }
           if [ -z "${APPLE_ID:-}" ] || [ -z "${APPLE_APP_PASSWORD:-}" ] || [ -z "${APPLE_TEAM_ID:-}" ]; then
             echo "::error::notary.env is missing APPLE_ID / APPLE_APP_PASSWORD / APPLE_TEAM_ID."
@@ -202,8 +208,12 @@ jobs:
           outdir="dist/release"
           rm -rf "$outdir"
           mkdir -p "$outdir"
-          cp "dist/mac/PokemonRed-macos.zip" "$outdir/PokemonRed-${v}-macos.zip"
-          cp "dist/win/PokemonRed-win64.zip" "$outdir/PokemonRed-${v}-windows.zip"
+          cp "dist/mac/gen1recomp-macos.zip" "$outdir/gen1recomp-${v}-macos.zip"
+          cp "dist/win/gen1recomp-win64.zip" "$outdir/gen1recomp-${v}-windows.zip"
+          cp "dist/linux/gen1recomp-linux.zip" "$outdir/gen1recomp-${v}-linux.zip"
+          apk="$(find dist/android/debug -name '*.apk' | head -1)"
+          [ -n "$apk" ] || { echo "::error::no Android APK found under dist/android/debug"; exit 1; }
+          cp "$apk" "$outdir/gen1recomp-${v}-android.apk"
           ls -lh "$outdir"
 
       - name: Publish GitHub Release
@@ -253,8 +263,10 @@ jobs:
             --target "$GITHUB_SHA" \
             --title "$v" \
             --notes "$notes" \
-            "dist/release/PokemonRed-${v}-macos.zip" \
-            "dist/release/PokemonRed-${v}-windows.zip"
+            "dist/release/gen1recomp-${v}-macos.zip" \
+            "dist/release/gen1recomp-${v}-windows.zip" \
+            "dist/release/gen1recomp-${v}-linux.zip" \
+            "dist/release/gen1recomp-${v}-android.apk"
 
           echo "Published release $tag"
 

README.md

@@ -1,18 +1,19 @@
 # Pokemon Gen 1 Recompilation Project
 
-A native LÖVE2D recreation of Pokemon Red. The engine and map behavior are
-hand-written Lua; game data and graphics are decoded from a ROM supplied by
-the player.
+A native LÖVE2D recreation of Pokemon Red and Blue. The engine and map
+behavior are hand-written Lua; game data and graphics are decoded from a ROM
+supplied by the player.
 
 SUPPORT AND ANNOUNCEMENTS: [Discord](https://bois.icu)
 
 This project does not include a ROM, emulate the Game Boy, transpile assembly,
-or download a disassembly. A canonical US Pokemon Red ROM is the only game
-content input.
+or download a disassembly. A canonical US Pokemon Red or Blue ROM is the only
+game content input.
 
 The ROM is verified, used during import, and then released from memory. It is
 not copied into the cache. Later launches load the private generated cache and
-do not ask for the ROM again.
+do not ask for the ROM again. Red and Blue can both be imported and played
+side by side.
 
 ## Quick Start
 
@@ -20,8 +21,12 @@ Open the desktop app. On first boot, choose your legally obtained `.gb` file
 or drop it onto the window. Import takes a few seconds and the game starts
 automatically.
 
-Only the canonical 1 MiB US Red ROM is accepted. The importer verifies SHA-1
-`ea9bcae617fdf159b045185467ae58b2e4a48b9a` before creating any game data.
+Only the canonical 1 MiB US Red and Blue ROMs are accepted. The importer
+verifies SHA-1 before creating any game data:
+
+- Red: `ea9bcae617fdf159b045185467ae58b2e4a48b9a`
+- Blue: `d7037c83e1ae5b39bde3c30787637ba1d4c48ce2`
+
 The packaged app contains neither a ROM nor pre-extracted game data. Music,
 sound effects, and cries are synthesized while the game runs from compact
 audio channel programs copied out of the verified ROM.
@@ -33,11 +38,11 @@ B; Escape opens START. F1 saves and F2 loads. Controllers are supported.
 
 ## Running From Source
 
-Requires LÖVE 11.x. Place the ROM in the project folder and double-click
-`Play-Mac.command` or `Play-Windows.bat`, or run:
+Requires LÖVE 11.x. Place a Red or Blue ROM in the project folder and
+double-click `Play-Mac.command` or `Play-Windows.bat`, or run:
 
 ```sh
-scripts/setup.sh --rom "/path/to/Pokemon Red.gb"
+scripts/setup.sh --rom "/path/to/Pokemon Red.gb"   # or Pokemon Blue.gb
 scripts/run.sh
 ```
 
@@ -45,6 +50,29 @@ then `love .` for later launches. Windows PowerShell scripts, the optional
 developer data build, test suites, and cache management are covered in
 [Developer Setup](https://github.com/bryanthaboi/pokemon-gen1-recomp-project/wiki/Guide-Developer-Setup).
 
+## Portable Mode
+
+By default the game keeps your save, options, and the private ROM-derived
+data cache in your OS's normal per-user app data folder. To keep everything
+next to the game instead (handy for a USB stick or portable drive you carry
+between computers), drop an empty file named `portable.txt` next to the app
+(next to `PokemonRed.app`/`.exe`, or next to `main.lua`/`conf.lua` when
+running from source), then launch the game. Portable mode is desktop-only
+(Windows, Linux, macOS); it has no effect on Android or iOS, where the app
+runs from a read-only package.
+
+With `portable.txt` present:
+
+- `save.lua`, `save.lua.bak`, and `options.lua` are read from and written to
+  that same folder instead of the OS save directory.
+- A ROM import writes the generated `data/generated` and `assets/generated`
+  cache straight into that folder too (nothing is left in the OS save
+  directory), so a later launch reuses it without asking for the ROM again
+  even on a different computer, as long as the same folder comes along.
+- Deleting `portable.txt` switches back to the normal OS save directory; nothing
+  already written to either location is touched automatically, so copy files
+  over yourself if you want to carry existing progress across the switch.
+
 ## Modding
 
 The game ships a native mod platform: content registries, events and hooks,
@@ -84,7 +112,3 @@ request with real detail is one that can actually get built.
 This project would not be possible without [pret](https://github.com/pret) >
 the pret band of decompiling maniacs > and their
 [pokered](https://github.com/pret/pokered) disassembly.
-
-## Wanna Support My Work?
-[![Buy Me a Coffee](https://img.shields.io/badge/Buy_Me_a_Coffee-FFDD00?style=for-the-badge&logo=buy-me-a-coffee&logoColor=black)](https://buymeacoffee.com/bryanthaboi)
-

conf.lua

@@ -1,13 +1,16 @@
 function love.conf(t)
   local editor = os.getenv("POKEPORT_EDITOR") == "1"
+  local developer = os.getenv("POKEPORT_DEV") == "1"
   if arg then
     for _, a in ipairs(arg) do
       if a == "--editor" then editor = true end
+      if a == "--developer" then developer = true end
     end
   end
   -- main.lua runs in the same Lua state right after conf.lua; stash the
   -- decision in a global so it doesn't need to reparse `arg`.
   _G.POKEPORT_EDITOR_MODE = editor
+  _G.POKEPORT_DEV_MODE = developer
 
   if editor then
     t.identity = os.getenv("POKEPORT_IDENTITY") or "pokemon-love2d-editor"
@@ -20,9 +23,13 @@ function love.conf(t)
     -- back to the plain title if the source is not mounted yet
     local ok, Version = pcall(require, "src.core.Version")
     t.window.title = ok and Version.title()
-      or "Pokemon Red (Gen 1 Recompilation Project)"
-    t.window.width = 160 * 4
-    t.window.height = 144 * 4
+      or "gen1recomp"
+    -- Open at the launcher's design size (the split-screen ROM selector is
+    -- laid out for 1024x768). The window is resizable and the 160x144 game
+    -- canvas letterboxes into whatever size it ends up, so this only sets the
+    -- starting size, not the game's resolution.
+    t.window.width = 1024
+    t.window.height = 768
   end
   t.version = "11.5"
   t.window.vsync = 1
@@ -34,14 +41,29 @@ function love.conf(t)
   local osName = love._os
   local mobile = osName == "Android" or osName == "iOS"
   if mobile then
-    -- On Android/iOS, width/height aspect picks portrait vs landscape
-    -- (fullscreen alone is not enough). Use a tall portrait size; the
-    -- OS then resizes to the real display. highdpi is required for
-    -- Retina iOS (Android always behaves as highdpi).
+    -- resizable is what unlocks orientation.  SDL's Android backend, given no
+    -- SDL_HINT_ORIENTATIONS (LÖVE sets none), calls setRequestedOrientation
+    -- at window creation -- FULL_SENSOR when the window is resizable (rotates
+    -- freely to portrait or landscape), otherwise locked to the window's w/h
+    -- aspect.  So a non-resizable tall window forced portrait; resizable lets
+    -- the game follow the device.  The renderer letterboxes the 160x144
+    -- viewport into whatever size results, and touch input is gesture-based,
+    -- so both orientations just work.  iOS follows the Info.plist orientations
+    -- (see mobile/ios/overlays/love-ios.plist, now portrait + landscape).
+    t.window.resizable = true
+    -- Starting size is a tall portrait hint; the OS resizes to the real
+    -- display and rotations resize again. highdpi is required for Retina iOS
+    -- (Android always behaves as highdpi).
     t.window.width = 1080
     t.window.height = 1920
     t.window.fullscreen = true
     t.window.highdpi = true
+    -- Android only (irrelevant on iOS): puts the save directory under the
+    -- app's external-files folder, which is readable/writable via USB or a
+    -- file manager with no runtime permission, so RomImporter can ask the
+    -- player to copy their ROM there instead of needing a native file
+    -- picker (LOVE 11.5 on Android has none -- see src/import/RomImporter.lua).
+    t.externalstorage = osName == "Android"
   else
     t.window.resizable = true
   end

data/scripts/celadon_chief_house.lua

@@ -0,0 +1,26 @@
+-- Celadon Chief House (scripts/CeladonChiefHouse.asm).  The CHIEF is a
+-- talk-only NPC in the original ROM, and ChiefData (data/trainers/
+-- parties.asm) is an empty, unreferenced trainer entry.  After the HALL
+-- OF FAME (EVENT_BEAT_CHAMPION_RIVAL) the CHIEF puts up a fight, using a
+-- reconstructed party for the otherwise-unused OPP_CHIEF class.
+
+return {
+  talk = {
+    TEXT_CELADONCHIEFHOUSE_CHIEF = {
+      { "face_player" },                                        -- 1
+      { "check_flag", "EVENT_BEAT_CHAMPION_RIVAL" },            -- 2
+      { "jump_if_false", 12 },                                  -- 3
+      { "check_flag", "EVENT_BEAT_CELADON_CHIEF" },             -- 4
+      { "jump_if_true", 12 },                                   -- 5
+      { "show_text", "So you've come to\nshut down my\noperation?\f"
+        .. "TEAM ROCKET's\nCHIEF won't go\ndown so easy!" },    -- 6
+      { "start_battle", "trainer", "OPP_CHIEF", 1 },            -- 7
+      { "jump_if_false", "end" },                               -- 8
+      { "set_flag", "EVENT_BEAT_CELADON_CHIEF" },               -- 9
+      { "show_text", "Gah! Even the\nCHIEF is no match\nfor you!\f"
+        .. "TEAM ROCKET is\nfinished for\ngood!" },             -- 10
+      { "jump", "end" },                                        -- 11
+      { "show_text", "_CeladonChiefHouseChiefText" },           -- 12
+    },
+  },
+}

data/scripts/flavor/pewter_city.lua

@@ -1,14 +1,11 @@
 -- Pewter City flavor dialogue (pokered/scripts/PewterCity.asm).
 -- PewterCity_TextPointers text_asm bodies for the SUPER_NERD1 museum
--- guide, SUPER_NERD2 garden nerd, and the leaving-east YOUNGSTER.
+-- guide and SUPER_NERD2 garden nerd.
 --
--- The escort choreography (SUPER_NERD1 walking the player to the
--- museum, YOUNGSTER walking the player to the gym) is scripted NPC
--- movement + a wPewterCityCurScript state machine that steers the
--- player off-map; that part is already covered on this map by
--- story5.lua's onStep gate (walks the player back a step at the
--- east exit before EVENT_BEAT_BROCK). Here we only port the real
--- YES/NO-branched flavor text these NPCs speak when talked to.
+-- The YOUNGSTER's gym escort (talk + east-exit onStep) lives in
+-- story5.lua so the lockstep RLE walk is not overwritten by this
+-- flavor merge.  SUPER_NERD1's museum escort is not ported; only the
+-- YES/NO-branched flavor text is here.
 
 local M = {}
 
@@ -60,15 +57,6 @@ M.PEWTER_CITY = {
       end)
     end,
 
-    -- PewterCityYoungsterText (scripts/PewterCity.asm): the "follow
-    -- me" line the youngster says when the player is stopped from
-    -- leaving Pewter east before beating Brock; the actual gate/step
-    -- block is handled by story5.lua's onStep for this map.
-    TEXT_PEWTERCITY_YOUNGSTER = function(game, ow, npc, done)
-      local t = text(game)
-      push(game, t._PewterCityYoungsterYoureATrainerFollowMeText
-        or "You're a trainer\nright? BROCK's\nlooking for new\nchallengers!\nFollow me!", done)
-    end,
   },
 }
 

data/scripts/flavor/reds_house_2f.lua

@@ -0,0 +1,22 @@
+-- Red's House 2F (pokered data/events/hidden_events.asm +
+-- engine/events/hidden_objects PrintRedSNESText).
+--
+-- The bedroom SNES is a hidden_event at (3, 5) with ANY_FACING that
+-- prints _RedBedroomSNESText.  field.py extracts OpenRedsPC on this map
+-- but skips PrintRedSNESText, so interaction was a no-op (#135).
+
+local TextBox = require("src.render.TextBox")
+
+return {
+  REDS_HOUSE_2F = {
+    -- hidden_events.asm:
+    --   hidden_event 3, 5, PrintRedSNESText, ANY_FACING
+    onInteract = function(game, ow, fx, fy)
+      if fx ~= 3 or fy ~= 5 then return false end
+      local text = game.data.text._RedBedroomSNESText
+        or "{PLAYER} is\nplaying the SNES!"
+      game.stack:push(TextBox.new(game, text))
+      return true
+    end,
+  },
+}

data/scripts/flavor/silph_co_9f.lua

@@ -5,19 +5,23 @@ return {
   SILPH_CO_9F = {
     talk = {
       -- SilphCo9FNurseText (pokered/scripts/SilphCo9F.asm):
-      -- before EVENT_BEAT_SILPH_CO_GIOVANNI: heals the party and shows
-      -- "You look tired..." then "Don't give up!"; after the event, just
-      -- says thanks. Nurse texts are not in data/generated/text.lua, so
-      -- the exact pokered/text/SilphCo9F.asm strings are used as literals.
+      -- before EVENT_BEAT_SILPH_CO_GIOVANNI: heals the party, white fade
+      -- (Delay3 between out/in; no Music_PkmnHealed), then "Don't give
+      -- up!"; after the event, just says thanks. Nurse texts are not in
+      -- data/generated/text.lua, so the exact pokered/text/SilphCo9F.asm
+      -- strings are used as literals.
       TEXT_SILPHCO9F_NURSE = {
-        { "face_player" },
-        { "check_flag", "EVENT_BEAT_SILPH_CO_GIOVANNI" },
-        { "jump_if_true", 8 },
-        { "show_text", "You look tired!\nYou should take a\nquick nap!" },
-        { "heal_party" },
-        { "show_text", "Don't give up!" },
-        { "jump", 9 },
-        { "show_text", "Thank you so\nmuch!" },
+        { "face_player" },                                              -- 1
+        { "check_flag", "EVENT_BEAT_SILPH_CO_GIOVANNI" },                -- 2
+        { "jump_if_true", 11 },                                         -- 3
+        { "show_text", "You look tired!\nYou should take a\nquick nap!" }, -- 4
+        { "heal_party" },                                               -- 5
+        { "fade", "out", "white" },                                     -- 6
+        { "wait", 3 },                                                  -- 7  Delay3
+        { "fade", "in", "white" },                                      -- 8
+        { "show_text", "Don't give up!" },                              -- 9
+        { "jump", "end" },                                              -- 10
+        { "show_text", "Thank you so\nmuch!" },                         -- 11
       },
     },
   },

data/scripts/flavor_all.lua

@@ -28,6 +28,7 @@ local files = {
   "data.scripts.flavor.pokemon_fan_club",
   "data.scripts.flavor.power_plant",
   "data.scripts.flavor.reds_house_1f",
+  "data.scripts.flavor.reds_house_2f",
   "data.scripts.flavor.route11_gate_2f",
   "data.scripts.flavor.route18_gate_2f",
   "data.scripts.flavor.route_12_gate_2f",

data/scripts/oaks_lab.lua

@@ -19,32 +19,41 @@ local function starterBall(askText, species, choseFlag, ownBall,
                            rivalBallX, rivalBall)
   return {
     { "check_flag", "EVENT_GOT_STARTER" },        -- 1
-    { "jump_if_true", 19 },                       -- 2
+    { "jump_if_true", 20 },                       -- 2
     -- no picking until Oak has walked you in (OaksLabScript gating)
     { "check_flag", "EVENT_FOLLOWED_OAK_INTO_LAB" }, -- 3
-    { "jump_if_false", 19 },                      -- 4
-    { "ask", askText },                           -- 5
-    { "jump_if_false", 20 },                      -- 6
-    { "give_pokemon", species, 5 },               -- 7
-    { "set_flag", "EVENT_GOT_STARTER" },          -- 8
-    { "set_flag", choseFlag },                    -- 9
+    { "jump_if_false", 20 },                      -- 4
+    -- the Pokédex "new species" entry shows before the ask (predef
+    -- StarterDex ahead of OaksLabYouWant...Text).  StarterDex temporarily
+    -- sets the owned bits so ShowPokedexData prints height/weight/text;
+    -- forceOwned is that bypass without mutating save.pokedex.owned.
+    { "push_screen", "DexEntryMenu",
+      { species = species, forceOwned = true } }, -- 5
+    { "ask", askText },                           -- 6
+    { "jump_if_false", 21 },                      -- 7
+    -- OaksLab.asm prints ReceivedMon then AddPartyMon (AskName lives
+    -- inside give_pokemon).  Show the received text first so the
+    -- nickname prompt follows "you got X", matching Gen1.
+    { "show_text", "_OaksLabReceivedMonText", { RAM = species } }, -- 8
+    { "give_pokemon", species, 5 },               -- 9
+    { "set_flag", "EVENT_GOT_STARTER" },          -- 10
+    { "set_flag", choseFlag },                    -- 11
     -- POKé BALLs are not handed out here in the original -- Oak gives
     -- them later, at OaksLabOak1Text's .give_poke_balls beat once the
     -- player has beaten the Route 22 rival (see TEXT_OAKSLAB_OAK1 below)
-    { "show_text", "_OaksLabReceivedMonText", { RAM = species } }, -- 10
-    { "hide_object", "OAKS_LAB", ownBall },       -- 11
+    { "hide_object", "OAKS_LAB", ownBall },       -- 12
     -- the rival walks to the countering ball (around the furniture)
-    { "move_npc_to", 1, rivalBallX, 4 },          -- 12
-    { "face_object", 1, "up" },                   -- 13
-    { "show_text", "_OaksLabRivalIllTakeThisOneText" },            -- 14
-    { "hide_object", "OAKS_LAB", rivalBall },     -- 15
+    { "move_npc_to", 1, rivalBallX, 4 },          -- 13
+    { "face_object", 1, "up" },                   -- 14
+    { "show_text", "_OaksLabRivalIllTakeThisOneText" },            -- 15
+    { "hide_object", "OAKS_LAB", rivalBall },     -- 16
     { "show_text", "_OaksLabRivalReceivedMonText",
       { RAM = rivalBall == "OAKSLAB_CHARMANDER_POKE_BALL" and "CHARMANDER"
               or rivalBall == "OAKSLAB_SQUIRTLE_POKE_BALL" and "SQUIRTLE"
-              or "BULBASAUR" } },                 -- 16
-    { "jump", 20 },                               -- 17
-    { "jump", 20 },                               -- 18 (spacer)
-    { "show_text", "_OaksLabThoseArePokeBallsText" }, -- 19
+              or "BULBASAUR" } },                 -- 17
+    { "jump", 21 },                               -- 18
+    { "jump", 21 },                               -- 19 (spacer)
+    { "show_text", "_OaksLabThoseArePokeBallsText" }, -- 20
   }
 end
 
@@ -58,40 +67,44 @@ return {
     TEXT_OAKSLAB_OAK1 = {
       { "face_player" },                                          -- 1
       { "check_flag", "EVENT_GOT_OAKS_PARCEL" },                  -- 2
-      { "jump_if_false", 14 },                                    -- 3
+      { "jump_if_false", 16 },                                    -- 3
       { "check_flag", "EVENT_OAK_GOT_PARCEL" },                   -- 4
-      { "jump_if_true", 14 },                                     -- 5
+      { "jump_if_true", 16 },                                     -- 5
       { "show_text", "_OaksLabOak1DeliverParcelText" },           -- 6
       { "take_item", "OAKS_PARCEL", 1 },                          -- 7
       { "set_flag", "EVENT_OAK_GOT_PARCEL" },                     -- 8
       { "show_text", "_OaksLabOak1PokemonAroundTheWorldText" },   -- 9
       { "set_flag", "EVENT_GOT_POKEDEX" },                        -- 10
+      -- OaksLab.asm OakGivesPokedex: HideObject TOGGLE_POKEDEX_1/2
+      -- so the table sprites leave with the gift (#106).
+      { "hide_object", "OAKS_LAB", "OAKSLAB_POKEDEX1" },          -- 11
+      { "hide_object", "OAKS_LAB", "OAKSLAB_POKEDEX2" },          -- 12
       -- the Pokédex swaps Viridian's two old men (OaksLab.asm:602-606:
       -- HideObject TOGGLE_LYING_OLD_MAN / ShowObject TOGGLE_OLD_MAN).
       -- Until this ran, the walking man at (17,5) -- who owns the coffee
       -- ask and the catch tutorial -- stayed OFF for the whole game
       -- (toggleable_objects.asm seeds him OFF, the sleeper ON).
-      { "hide_object", "VIRIDIAN_CITY", "VIRIDIANCITY_OLD_MAN_SLEEPY" }, -- 11
-      { "show_object", "VIRIDIAN_CITY", "VIRIDIANCITY_OLD_MAN" },  -- 12
-      { "jump", 32 },                                             -- 13
-      { "check_flag", "EVENT_GOT_STARTER" },                      -- 14
-      { "jump_if_false", 29 },                                    -- 15
-      { "check_item", "POKE_BALL" },                              -- 16
-      { "jump_if_true", 27 },                                     -- 17
-      { "check_flag", "EVENT_BEAT_ROUTE22_RIVAL_1ST_BATTLE" },    -- 18
-      { "jump_if_false", 31 },                                    -- 19
-      { "check_flag", "EVENT_GOT_POKEBALLS_FROM_OAK" },           -- 20
-      { "jump_if_true", 27 },                                     -- 21
-      { "set_flag", "EVENT_GOT_POKEBALLS_FROM_OAK" },             -- 22
-      { "give_item", "POKE_BALL", 5, false },                     -- 23
-      { "show_text", "_OaksLabOak1ReceivedPokeballsText" },       -- 24
-      { "show_text", "_OaksLabGivePokeballsExplanationText" },    -- 25
-      { "jump", 32 },                                             -- 26
-      { "show_text", "_OaksLabOak1ComeSeeMeSometimesText" },      -- 27
-      { "jump", 32 },                                             -- 28
-      { "show_text", "_OaksLabOak1WhichPokemonDoYouWantText" },   -- 29
-      { "jump", 32 },                                             -- 30
-      { "show_text", "_OaksLabOak1RaiseYourYoungPokemonText" },   -- 31 (32 = end)
+      { "hide_object", "VIRIDIAN_CITY", "VIRIDIANCITY_OLD_MAN_SLEEPY" }, -- 13
+      { "show_object", "VIRIDIAN_CITY", "VIRIDIANCITY_OLD_MAN" },  -- 14
+      { "jump", "end" },                                          -- 15
+      { "check_flag", "EVENT_GOT_STARTER" },                      -- 16
+      { "jump_if_false", 31 },                                    -- 17
+      { "check_item", "POKE_BALL" },                              -- 18
+      { "jump_if_true", 29 },                                     -- 19
+      { "check_flag", "EVENT_BEAT_ROUTE22_RIVAL_1ST_BATTLE" },    -- 20
+      { "jump_if_false", 33 },                                    -- 21
+      { "check_flag", "EVENT_GOT_POKEBALLS_FROM_OAK" },           -- 22
+      { "jump_if_true", 29 },                                     -- 23
+      { "set_flag", "EVENT_GOT_POKEBALLS_FROM_OAK" },             -- 24
+      { "give_item", "POKE_BALL", 5, false },                     -- 25
+      { "show_text", "_OaksLabOak1ReceivedPokeballsText" },       -- 26
+      { "show_text", "_OaksLabGivePokeballsExplanationText" },    -- 27
+      { "jump", "end" },                                          -- 28
+      { "show_text", "_OaksLabOak1ComeSeeMeSometimesText" },      -- 29
+      { "jump", "end" },                                          -- 30
+      { "show_text", "_OaksLabOak1WhichPokemonDoYouWantText" },   -- 31
+      { "jump", "end" },                                          -- 32
+      { "show_text", "_OaksLabOak1RaiseYourYoungPokemonText" },   -- 33
     },
 
     TEXT_OAKSLAB_CHARMANDER_POKE_BALL =
@@ -137,6 +150,19 @@ return {
     },
   },
 
+  -- Saves that got the Pokédex before #106 never wrote objectToggles for
+  -- the table sprites; re-entering the lab applies the same HideObject
+  -- the gift script now does (OaksLab.asm OakGivesPokedex).
+  onEnter = function(game, ow)
+    if not (game.save.flags and game.save.flags.EVENT_GOT_POKEDEX) then
+      return
+    end
+    local Commands = require("src.script.Commands")
+    local ctx = { save = game.save, game = game, overworld = ow }
+    Commands.hide_object(ctx, "OAKS_LAB", "OAKSLAB_POKEDEX1")
+    Commands.hide_object(ctx, "OAKS_LAB", "OAKSLAB_POKEDEX2")
+  end,
+
   -- Oak stops you leaving without a starter; the rival stops you on
   -- the way out for the first battle (scripts/OaksLab.asm
   -- OaksLabScript8 / OaksLabRivalChallenge)

data/scripts/pallet_town.lua

@@ -10,15 +10,39 @@
 -- The girl, fisher and the four signs resolve automatically through the
 -- extracted text pointers (no script needed).
 
+-- Once the HALL OF FAME has been reached (EVENT_BEAT_CHAMPION_RIVAL, set
+-- alongside Commands.record_hall_of_fame) Oak offers the ProfOakData
+-- battle (data/trainers/parties.asm) -- three teams picked by the
+-- player's starter, mirroring the rival's type-advantage lineup, that go
+-- unused in the original ROM.
 return {
   talk = {
     TEXT_PALLETTOWN_OAK = {
-      { "face_player" },                                    -- 1
-      { "check_flag", "EVENT_GOT_STARTER" },                -- 2
-      { "jump_if_true", 6 },                                -- 3
-      { "show_text", "_PalletTownOakHeyWaitDontGoOutText" },-- 4
-      { "jump", 7 },                                        -- 5
-      { "show_text", "_PalletTownOakItsUnsafeText" },       -- 6
+      { "face_player" },                                             -- 1
+      { "check_flag", "EVENT_BEAT_CHAMPION_RIVAL" },                 -- 2
+      { "jump_if_false", 20 },                                       -- 3
+      { "check_flag", "EVENT_BEAT_PROF_OAK" },                       -- 4
+      { "jump_if_true", 20 },                                        -- 5
+      { "show_text", "OAK: So you want\nto test your\nskills on me?\f"
+        .. "Very well! Let\nme show you what\na real trainer\ncan do!" }, -- 6
+      { "check_flag", "EVENT_CHOSE_BULBASAUR" },                     -- 7
+      { "jump_if_false", 11 },                                       -- 8
+      { "start_battle", "trainer", "OPP_PROF_OAK", 3 },              -- 9  CHARIZARD
+      { "jump", 16 },                                                -- 10
+      { "check_flag", "EVENT_CHOSE_SQUIRTLE" },                      -- 11
+      { "jump_if_false", 15 },                                       -- 12
+      { "start_battle", "trainer", "OPP_PROF_OAK", 2 },              -- 13 VENUSAUR
+      { "jump", 16 },                                                -- 14
+      { "start_battle", "trainer", "OPP_PROF_OAK", 1 },              -- 15 BLASTOISE
+      { "jump_if_false", "end" },                                    -- 16
+      { "set_flag", "EVENT_BEAT_PROF_OAK" },                         -- 17
+      { "show_text", "OAK: Impressive!\nYou truly are a\nPOKéMON MASTER!" }, -- 18
+      { "jump", "end" },                                             -- 19
+      { "check_flag", "EVENT_GOT_STARTER" },                         -- 20
+      { "jump_if_true", 24 },                                        -- 21
+      { "show_text", "_PalletTownOakHeyWaitDontGoOutText" },         -- 22
+      { "jump", "end" },                                             -- 23
+      { "show_text", "_PalletTownOakItsUnsafeText" },                -- 24
     },
   },
 }

data/scripts/reds_house.lua

@@ -1,15 +1,23 @@
 -- Hand-ported from pret/pokered scripts/RedsHouse1F.asm.
--- Mom (RedsHouse1FMomText, text_asm) heals the party and shows the
--- "you should rest" / "looking great" dialogue.  The intro "wake up"
--- branch is tied to the unported intro cutscene, so the heal path is used.
+-- Mom (RedsHouse1FMomText): pre-starter shows the wake-up / Oak tip;
+-- after EVENT_GOT_STARTER, RedsHouse1FMomHealScript fades to white,
+-- heals, plays MUSIC_PKMN_HEALED, fades back, then "looking great".
 
 return {
   talk = {
     TEXT_REDSHOUSE1F_MOM = {
-      { "face_player" },
-      { "show_text", "_RedsHouse1FMomYouShouldRestText" },
-      { "heal_party" },
-      { "show_text", "_RedsHouse1FMomLookingGreatText" },
+      { "face_player" },                                          -- 1
+      { "check_flag", "EVENT_GOT_STARTER" },                      -- 2
+      { "jump_if_true", 6 },                                      -- 3
+      { "show_text", "_RedsHouse1FMomWakeUpText" },               -- 4
+      { "jump", "end" },                                          -- 5
+      -- RedsHouse1FMomHealScript
+      { "show_text", "_RedsHouse1FMomYouShouldRestText" },        -- 6
+      { "fade", "out", "white" },                                 -- 7  GBFadeOutToWhite
+      { "heal_party" },                                           -- 8
+      { "play_once", "Music_PkmnHealed" },                        -- 9  wait + restore map
+      { "fade", "in", "white" },                                  -- 10 GBFadeInFromWhite
+      { "show_text", "_RedsHouse1FMomLookingGreatText" },         -- 11
     },
   },
 }

data/scripts/story.lua

@@ -133,22 +133,70 @@ M.BLUES_HOUSE = {
 
 M.BILLS_HOUSE = {
   talk = {
-    TEXT_BILLSHOUSE_BILL_POKEMON = {
-      { "check_flag", "EVENT_GOT_SS_TICKET" },                     -- 1
-      { "jump_if_true", 13 },                                      -- 2
-      { "show_text", "_BillsHouseBillImNotAPokemonText" },         -- 3
-      { "show_text", "_BillsHouseBillNoYouGottaHelpText" },        -- 4
-      -- the cell-separator PC throws its switch
-      -- (bills_house_pc.asm BillsHouseInitiatedText: SFX_SWITCH)
-      { "play_sound", "Switch" },                                  -- 5
-      { "show_text", "_BillsHouseBillThankYouText" },              -- 6
+    -- BillsHouseBillPokemonText: "I'm not a POKéMON!", a YES/NO choice
+    -- (NO only adds "No, you gotta help!" before rejoining the YES
+    -- path), then the "get in the TELEPORTER" line and the monster
+    -- walking into the cell-separator machine
+    -- (BillsHousePokemonWalkToMachineScript: up 3, or around the player
+    -- when they stand in the way facing down), where it is hidden and
+    -- EVENT_BILL_SAID_USE_CELL_SEPARATOR arms the PC at (1,4) -- see
+    -- OverworldState.billsHousePC for the separator itself.
+    TEXT_BILLSHOUSE_BILL_POKEMON = function(game, ow, npc, done)
+      local TextBox = require("src.render.TextBox")
+      local t = game.data.text
+      local function toMachine()
+        game.stack:push(TextBox.new(game,
+          t._BillsHouseBillUseSeparationSystemText
+          or "When I'm in the\nTELEPORTER, run\nthe Cell\nSeparation System!", function()
+          local function entered()
+            local Commands = require("src.script.Commands")
+            Commands.hide_object({ game = game, save = game.save,
+                                   overworld = ow },
+                                 "BILLS_HOUSE", "BILLSHOUSE_BILL_POKEMON")
+            game.save.flags.EVENT_BILL_SAID_USE_CELL_SEPARATOR = true
+            done()
+          end
+          if ow.player.facing == "down" then
+            -- the player is standing on his straight path: walk around
+            -- (.PokemonWalkAroundPlayerMovement)
+            ow:scriptMove(npc, "right", 1, function()
+              ow:scriptMove(npc, "up", 2, function()
+                ow:scriptMove(npc, "left", 1, function()
+                  ow:scriptMove(npc, "up", 1, entered)
+                end)
+              end)
+            end)
+          else
+            ow:scriptMove(npc, "up", 3, entered)
+          end
+        end))
+      end
+      game.stack:push(TextBox.new(game,
+        t._BillsHouseBillImNotAPokemonText or "Hey! I'm not a\nPOKéMON!",
+        nil, { choice = function(yes)
+          if yes then
+            toMachine()
+          else
+            game.stack:push(TextBox.new(game,
+              t._BillsHouseBillNoYouGottaHelpText
+              or "No! You gotta\nhelp me!", toMachine))
+          end
+        end }))
+    end,
+
+    -- BillsHouseBillSSTicketText (human Bill after the separation)
+    TEXT_BILLSHOUSE_BILL_SS_TICKET = {
+      { "face_player" },                                           -- 1
+      { "check_flag", "EVENT_GOT_SS_TICKET" },                     -- 2
+      { "jump_if_true", 12 },                                      -- 3
+      { "show_text", "_BillsHouseBillThankYouText" },              -- 4
       -- pokered gives first (GiveItem fills wStringBuffer), then prints
       -- the received text that reads it (scripts/BillsHouse.asm; the
       -- item id is S_S_TICKET in generated items.lua -- keyItem, so the
       -- sound_get_key_item jingle plays like BillsHouse.asm:196)
-      { "give_item", "S_S_TICKET", 1, false },                     -- 7
-      { "show_text", "_SSTicketReceivedText" },                    -- 8
-      { "set_flag", "EVENT_GOT_SS_TICKET" },                       -- 9
+      { "give_item", "S_S_TICKET", 1, false },                     -- 5
+      { "show_text", "_SSTicketReceivedText" },                    -- 6
+      { "set_flag", "EVENT_GOT_SS_TICKET" },                       -- 7
       -- The two Cerulean guards are a SWAP PAIR, not scenery
       -- (BillsHouse.asm:174-178): handing over the ticket shows GUARD1 at
       -- (28,12) and hides GUARD2 at (27,12).  This matters far more than it
@@ -156,16 +204,74 @@ M.BILLS_HOUSE = {
       -- house's south door at (27,11), and that house is one of the two
       -- ways through the fence that splits Cerulean in half (the badge
       -- house is the other).  Leaving GUARD2 up forever severs the city --
-      -- the gym/mart half can never reach the Route 5 exit -- which is
-      -- exactly what stranded the bot after it beat Misty.
+      -- the gym/mart half can never reach the Route 5 exit.
       -- Same swap fires after the TM28 Rocket (CeruleanCity_2.asm
       -- CeruleanHideRocket), so either route opens the path.
-      { "show_object", "CERULEAN_CITY", "CERULEANCITY_GUARD1" },   -- 10
-      { "hide_object", "CERULEAN_CITY", "CERULEANCITY_GUARD2" },   -- 11
-      { "jump", 14 },                                              -- 12
-      { "show_text", "_BillsHouseBillCheckOutMyRarePokemonText" }, -- 13
+      { "show_object", "CERULEAN_CITY", "CERULEANCITY_GUARD1" },   -- 8
+      { "hide_object", "CERULEAN_CITY", "CERULEANCITY_GUARD2" },   -- 9
+      { "show_text", "_BillsHouseBillWhyDontYouGoInsteadOfMeText" }, -- 10
+      { "jump", 13 },                                              -- 11
+      { "show_text", "_BillsHouseBillWhyDontYouGoInsteadOfMeText" }, -- 12
+    },
+
+    TEXT_BILLSHOUSE_BILL_CHECK_OUT_MY_RARE_POKEMON = {
+      { "face_player" },                                           -- 1
+      { "show_text", "_BillsHouseBillCheckOutMyRarePokemonText" }, -- 2
     },
   },
+  -- repair saves that already got the ticket under the old collapsed
+  -- script (the monster never hidden, human Bill never shown)
+  onEnter = function(game, ow)
+    local flags = game.save.flags
+    if flags.EVENT_GOT_SS_TICKET
+       and not flags.EVENT_USED_CELL_SEPARATOR_ON_BILL then
+      local Commands = require("src.script.Commands")
+      local ctx = { game = game, save = game.save, overworld = ow }
+      Commands.hide_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL_POKEMON")
+      Commands.show_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL1")
+      flags.EVENT_BILL_SAID_USE_CELL_SEPARATOR = true
+      flags.EVENT_USED_CELL_SEPARATOR_ON_BILL = true
+      flags.EVENT_MET_BILL = true
+      flags.EVENT_MET_BILL_2 = true
+    end
+    -- After Route25ToggleBillsScript, BILL2 is the visible human Bill
+    -- ("check out my rare POKéMON").  Re-apply on enter so a mid-house
+    -- load still matches the toggles if the pool was rebuilt.
+    if flags.EVENT_LEFT_BILLS_HOUSE_AFTER_HELPING then
+      local Commands = require("src.script.Commands")
+      local ctx = { game = game, save = game.save, overworld = ow }
+      Commands.hide_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL_POKEMON")
+      Commands.hide_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL1")
+      Commands.show_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL2")
+    end
+  end,
+}
+
+-- -------------------------------------------------------------------
+-- Route 25 outside Bill's house (scripts/Route25.asm
+-- Route25ToggleBillsScript): leaving after the SS Ticket arms the
+-- Eevee PC list and swaps human Bill to his post-help dialogue NPC.
+-- Leaving mid-quest (Bill still in the machine) puts the monster back.
+-- -------------------------------------------------------------------
+
+M.ROUTE_25 = {
+  onEnter = function(game, ow)
+    local flags = game.save.flags
+    if flags.EVENT_LEFT_BILLS_HOUSE_AFTER_HELPING then return end
+    local Commands = require("src.script.Commands")
+    local ctx = { game = game, save = game.save, overworld = ow }
+    if not flags.EVENT_MET_BILL_2 then
+      flags.EVENT_BILL_SAID_USE_CELL_SEPARATOR = nil
+      Commands.show_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL_POKEMON")
+      return
+    end
+    if not flags.EVENT_GOT_SS_TICKET then return end
+    flags.EVENT_LEFT_BILLS_HOUSE_AFTER_HELPING = true
+    -- TOGGLE_NUGGET_BRIDGE_GUY (ROUTE24_COOLTRAINER_M1)
+    Commands.hide_object(ctx, "ROUTE_24", "ROUTE24_COOLTRAINER_M1")
+    Commands.hide_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL1")
+    Commands.show_object(ctx, "BILLS_HOUSE", "BILLSHOUSE_BILL2")
+  end,
 }
 
 -- -------------------------------------------------------------------
@@ -186,17 +292,63 @@ M.VERMILION_CITY = {
     game.save.trashPuzzle = puz
     puz.first = love.math.random(0, 7) * 2
   end,
+  -- VermilionCityDefaultScript's per-frame SSAnneTicketCheckCoords check:
+  -- the unguarded cell (18,30) just west of the sailor leads straight
+  -- onto the dock warp.  Stepping onto it facing down always runs the
+  -- sailor dialog (DisplayTextID TEXT_VERMILIONCITY_SAILOR1); only a
+  -- ticket while the ship is still docked lets the player continue --
+  -- otherwise they are walked back up.  The sailor himself never hides.
+  onStep = function(game, ow, x, y)
+    if x ~= 18 or y ~= 30 then return false end
+    if ow.player.facing ~= "down" then return false end
+    local Flags = require("src.script.Flags")
+    local t = game.data.text
+    local TextBox = require("src.render.TextBox")
+    local shipLeft = Flags.get(game.save, "EVENT_SS_ANNE_LEFT")
+    local hasTicket = (game.save.inventory.S_S_TICKET or 0) > 0
+    if shipLeft then
+      game.stack:push(TextBox.new(game,
+        t._VermilionCitySailor1ShipSetSailText or "The ship set sail.",
+        function() ow:scriptMove(ow.player, "up", 1) end))
+      return true
+    end
+    -- Walk-past is never facing-right / inFrontOfOrBehindGuardCoords, so
+    -- VermilionCitySailor1Text always takes .greet_player_and_check_ticket:
+    -- DoYouHaveATicket, then FlashedTicket (allow through) or YouNeedATicket
+    -- (walk back).  Returning true while the box is up also blocks the
+    -- dock warp on this step.
+    local ask = t._VermilionCitySailor1DoYouHaveATicketText
+      or "Welcome to S.S.\nANNE!\fExcuse me, do you\nhave a ticket?"
+    if hasTicket then
+      game.stack:push(TextBox.new(game,
+        ask .. "\f"
+        .. (t._VermilionCitySailor1FlashedTicketText
+            or "{PLAYER} flashed\nthe S.S.TICKET!")))
+      return true
+    end
+    game.stack:push(TextBox.new(game,
+      ask .. "\f"
+      .. (t._VermilionCitySailor1YouNeedATicketText
+          or "You need a ticket\nto get aboard."),
+      function() ow:scriptMove(ow.player, "up", 1) end))
+    return true
+  end,
   talk = {
-    -- the sailor guarding the dock gangway
+    -- the sailor guarding the dock gangway (VermilionCitySailor1Text):
+    -- flashing the ticket just lets you through -- he never hides, and
+    -- once the ship has sailed he only reports it gone
     TEXT_VERMILIONCITY_SAILOR1 = {
       { "face_player" },                                             -- 1
-      { "show_text", "_VermilionCitySailor1WelcomeToSSAnneText" },   -- 2
-      { "check_item", "S_S_TICKET" },                                -- 3
-      { "jump_if_false", 8 },                                        -- 4
-      { "show_text", "_VermilionCitySailor1FlashedTicketText" },     -- 5
-      { "hide_object", "VERMILION_CITY", "VERMILIONCITY_SAILOR1" },  -- 6
-      { "jump", 9 },                                                 -- 7
-      { "show_text", "_VermilionCitySailor1YouNeedATicketText" },    -- 8
+      { "check_flag", "EVENT_SS_ANNE_LEFT" },                        -- 2
+      { "jump_if_true", 11 },                                        -- 3
+      { "show_text", "_VermilionCitySailor1DoYouHaveATicketText" },  -- 4
+      { "check_item", "S_S_TICKET" },                                -- 5
+      { "jump_if_false", 9 },                                        -- 6
+      { "show_text", "_VermilionCitySailor1FlashedTicketText" },     -- 7
+      { "jump", 12 },                                                -- 8
+      { "show_text", "_VermilionCitySailor1YouNeedATicketText" },    -- 9
+      { "jump", 12 },                                                -- 10
+      { "show_text", "_VermilionCitySailor1ShipSetSailText" },       -- 11
     },
   },
 }
@@ -219,18 +371,21 @@ M.SS_ANNE_2F = {
 
 M.SS_ANNE_CAPTAINS_ROOM = {
   talk = {
+    -- SSAnneCaptainsRoomCaptainText: after the rub line's text_asm tail,
+    -- pokered plays MUSIC_PKMN_HEALED (scripts/SSAnneCaptainsRoom.asm).
     TEXT_SSANNECAPTAINSROOM_CAPTAIN = {
       { "check_flag", "EVENT_GOT_HM01" },                                 -- 1
-      { "jump_if_true", 9 },                                              -- 2
+      { "jump_if_true", 10 },                                             -- 2
       { "show_text", "_SSAnneCaptainsRoomRubCaptainsBackText" },          -- 3
-      { "show_text", "_SSAnneCaptainsRoomCaptainIFeelMuchBetterText" },   -- 4
+      { "play_once", "Music_PkmnHealed" },                                -- 4
+      { "show_text", "_SSAnneCaptainsRoomCaptainIFeelMuchBetterText" },   -- 5
       -- give-then-print like scripts/SSAnneCaptainsRoom.asm (GiveItem
       -- fills wStringBuffer; the received text reads it)
-      { "give_item", "HM_CUT", 1, false },                                -- 5
-      { "show_text", "_SSAnneCaptainsRoomCaptainReceivedHM01Text" },      -- 6
-      { "set_flag", "EVENT_GOT_HM01" },                                   -- 7
-      { "jump", 10 },                                                     -- 8
-      { "show_text", "_SSAnneCaptainsRoomCaptainNotSickAnymoreText" },    -- 9
+      { "give_item", "HM_CUT", 1, false },                                -- 6
+      { "show_text", "_SSAnneCaptainsRoomCaptainReceivedHM01Text" },      -- 7
+      { "set_flag", "EVENT_GOT_HM01" },                                   -- 8
+      { "jump", 11 },                                                     -- 9
+      { "show_text", "_SSAnneCaptainsRoomCaptainNotSickAnymoreText" },    -- 10
     },
   },
 }
@@ -461,7 +616,8 @@ M.SILPH_CO_11F = {
 -- -------------------------------------------------------------------
 -- Victory Road boulder switches (scripts/VictoryRoad1F/2F/3F.asm):
 -- a boulder resting on a switch removes a barrier block; the 3F hole
--- drops a boulder down to the 2F switch.
+-- drops a boulder down to the 2F switch, and also dungeon-warps the
+-- player (IsPlayerOnDungeonWarp + DungeonWarpList/Data -> 2F at 22,16).
 -- -------------------------------------------------------------------
 
 local function boulderAt(ow, x, y)
@@ -527,6 +683,18 @@ M.VICTORY_ROAD_3F = {
       Commands.show_object(ctx, "VICTORY_ROAD_2F", "VICTORYROAD2F_BOULDER")
     end
   end,
+  -- scripts/VictoryRoad3F.asm VictoryRoad3FDefaultScript: the same hole
+  -- is a dungeon warp for the player (wDungeonWarpDestinationMap =
+  -- VICTORY_ROAD_2F, wWhichDungeonWarp = 2 -> DungeonWarpData 22,16).
+  -- Mirrors POKEMON_MANSION_3F.onStep; CAVERN $22 is walkable so the
+  -- fall is onStep, not a collision block.
+  onStep = function(game, ow, x, y)
+    if x == 23 and y == 15 then
+      ow:startWarpTo("VICTORY_ROAD_2F", 22, 16, ow.player.facing)
+      return true
+    end
+    return false
+  end,
 }
 
 -- -------------------------------------------------------------------
@@ -539,6 +707,16 @@ M.VICTORY_ROAD_3F = {
 -- IndigoPlateauLobby.asm) so the champion is re-fightable on rematches,
 -- like pokered's re-entry cutscene.  EVENT_BEAT_CHAMPION_RIVAL stays set
 -- forever (postgame gates like the Cerulean cave guard read it).
+--
+-- pokered forces the fight on map entry: Agatha's victory arms
+-- SCRIPT_CHAMPIONSROOM_PLAYER_ENTERS (scripts/AgathasRoom.asm), and
+-- ChampionsRoomPlayerEntersScript then runs RivalEntrance_RLEMovement
+-- (up 1, right 1, up 3) before ChampionsRoomRivalReadyToBattleScript.
+-- The rival object has no trainer header / sight range, so without that
+-- entrance script the player can walk past (issue #99).  We arm on the
+-- run flag instead of Agatha's victory bit: same observable effect for
+-- first clear and Indigo rematches, without a cross-map script pointer.
+--
 -- scripts/ChampionsRoom.asm ChampionsRoomRivalDefeatedScript ->
 -- OakArrivesScript -> OakCongratulatesPlayerScript ->
 -- OakDisappointedWithRivalScript -> OakComeWithMeScript -> OakExitsScript,
@@ -547,43 +725,69 @@ M.VICTORY_ROAD_3F = {
 -- itself is NOT run here: it belongs to the HALL_OF_FAME room script
 -- (scripts/HallOfFame.asm), so we set a one-shot marker and warp; the room
 -- onEnter (M.HALL_OF_FAME below) drives the HoF Oak speech + record.
+local championsRoomRivalScript = {
+  { "face_player" },                                        -- 1
+  { "check_flag", "EVENT_BEAT_CHAMPION_RIVAL_THIS_RUN" },   -- 2
+  { "jump_if_true", 25 },                                   -- 3  past end
+  { "show_text", "_ChampionsRoomRivalIntroText" },          -- 4
+  { "rival_battle", "OPP_RIVAL3", 1 },                      -- 5
+  { "jump_if_false", 25 },                                  -- 6  past end
+  { "set_flag", "EVENT_BEAT_CHAMPION_RIVAL_THIS_RUN" },     -- 7
+  { "set_flag", "EVENT_BEAT_CHAMPION_RIVAL" },              -- 8
+  -- ChampionsRoomRivalDefeatedScript re-displays TEXT_CHAMPIONSROOM_RIVAL,
+  -- whose text_asm takes the EVENT_BEAT_CHAMPION_RIVAL branch =
+  -- _ChampionsRoomRivalAfterBattleText (the in-battle _RivalDefeatedText
+  -- is the port's generic "<PLAYER> defeated BLUE!" engine line instead).
+  { "show_text", "_ChampionsRoomRivalAfterBattleText" },    -- 9
+  -- ChampionsRoomOakArrivesScript: Music_Cities1AlternateTempo
+  -- (Cities1, kept into HALL_OF_FAME like BIT_NO_MAP_MUSIC after
+  -- defeating RIVAL3), then Oak's "{PLAYER}!" + reveal + walk in
+  { "play_music", "Music_Cities1", { keep = true } },       -- 10
+  { "show_text", "_ChampionsRoomOakText" },                 -- 11
+  { "show_object", "CHAMPIONS_ROOM", "CHAMPIONSROOM_OAK" },  -- 12
+  { "move_npc", 2, "up", 5 },                               -- 13 OakEntranceAfterVictoryMovement
+  -- OakCongratulatesPlayerScript: rival faces left, Oak faces down
+  { "face_object", 1, "left" },                             -- 14
+  { "face_object", 2, "down" },                             -- 15
+  { "show_text", "_ChampionsRoomOakCongratulatesPlayerText" }, -- 16
+  -- OakDisappointedWithRivalScript: Oak turns to the rival (right)
+  { "face_object", 2, "right" },                            -- 17
+  { "show_text", "_ChampionsRoomOakDisappointedWithRivalText" }, -- 18
+  -- OakComeWithMeScript: Oak faces down again, then exits up
+  { "face_object", 2, "down" },                             -- 19
+  { "show_text", "_ChampionsRoomOakComeWithMeText" },       -- 20
+  { "move_npc", 2, "up", 2 },                               -- 21 OakExitChampionsRoomMovement
+  { "hide_object", "CHAMPIONS_ROOM", "CHAMPIONSROOM_OAK" },  -- 22
+  -- hand the induction off to the HALL_OF_FAME room (consumed by its
+  -- onEnter), then warp up into it (destWarp 1 lands at (4,7) facing up)
+  { "set_field", "pendingHallOfFame", true },               -- 23
+  { "warp", "HALL_OF_FAME", 4, 7, "up" },                   -- 24
+}
+
 M.CHAMPIONS_ROOM = {
+  onEnter = function(game, ow)
+    if game.save.flags.EVENT_BEAT_CHAMPION_RIVAL_THIS_RUN then return end
+    -- Lance entrance warps land at y=7; HoF return warps land at y=0.
+    -- Only the south entry should run ChampionsRoomPlayerEntersScript.
+    if ow.player.cellY < 7 then return end
+    local rival
+    for _, npc in ipairs(ow.npcs) do
+      if npc.def and npc.def.name == "CHAMPIONSROOM_RIVAL" then
+        rival = npc
+        break
+      end
+    end
+    -- RivalEntrance_RLEMovement, then the battle/Oak script (queued
+    -- separately so talk-script jump indices stay 1-based as written).
+    ow:queueScript({
+      { "move_player", "up", 1 },
+      { "move_player", "right", 1 },
+      { "move_player", "up", 3 },
+    })
+    ow:queueScript(championsRoomRivalScript, { npc = rival })
+  end,
   talk = {
-    TEXT_CHAMPIONSROOM_RIVAL = {
-      { "face_player" },                                        -- 1
-      { "check_flag", "EVENT_BEAT_CHAMPION_RIVAL_THIS_RUN" },   -- 2
-      { "jump_if_true", 24 },                                   -- 3
-      { "show_text", "_ChampionsRoomRivalIntroText" },          -- 4
-      { "rival_battle", "OPP_RIVAL3", 1 },                      -- 5
-      { "jump_if_false", 24 },                                  -- 6
-      { "set_flag", "EVENT_BEAT_CHAMPION_RIVAL_THIS_RUN" },     -- 7
-      { "set_flag", "EVENT_BEAT_CHAMPION_RIVAL" },              -- 8
-      -- ChampionsRoomRivalDefeatedScript re-displays TEXT_CHAMPIONSROOM_RIVAL,
-      -- whose text_asm takes the EVENT_BEAT_CHAMPION_RIVAL branch =
-      -- _ChampionsRoomRivalAfterBattleText (the in-battle _RivalDefeatedText
-      -- is the port's generic "<PLAYER> defeated BLUE!" engine line instead).
-      { "show_text", "_ChampionsRoomRivalAfterBattleText" },    -- 9
-      -- ChampionsRoomOakArrivesScript: Oak's "{PLAYER}!" then reveal + walk in
-      { "show_text", "_ChampionsRoomOakText" },                 -- 10
-      { "show_object", "CHAMPIONS_ROOM", "CHAMPIONSROOM_OAK" },  -- 11
-      { "move_npc", 2, "up", 5 },                               -- 12 OakEntranceAfterVictoryMovement (3,7)->(3,2)
-      -- OakCongratulatesPlayerScript: rival faces left, Oak faces down
-      { "face_object", 1, "left" },                             -- 13
-      { "face_object", 2, "down" },                             -- 14
-      { "show_text", "_ChampionsRoomOakCongratulatesPlayerText" }, -- 15
-      -- OakDisappointedWithRivalScript: Oak turns to the rival (right)
-      { "face_object", 2, "right" },                            -- 16
-      { "show_text", "_ChampionsRoomOakDisappointedWithRivalText" }, -- 17
-      -- OakComeWithMeScript: Oak faces down again, then exits up
-      { "face_object", 2, "down" },                             -- 18
-      { "show_text", "_ChampionsRoomOakComeWithMeText" },       -- 19
-      { "move_npc", 2, "up", 2 },                               -- 20 OakExitChampionsRoomMovement (3,2)->(3,0)
-      { "hide_object", "CHAMPIONS_ROOM", "CHAMPIONSROOM_OAK" },  -- 21
-      -- hand the induction off to the HALL_OF_FAME room (consumed by its
-      -- onEnter), then warp up into it (destWarp 1 lands at (4,7) facing up)
-      { "set_field", "pendingHallOfFame", true },               -- 22
-      { "warp", "HALL_OF_FAME", 4, 7, "up" },                   -- 23
-    },
+    TEXT_CHAMPIONSROOM_RIVAL = championsRoomRivalScript,
   },
 }
 
@@ -613,6 +817,29 @@ M.HALL_OF_FAME = {
     local toggles = game.save.objectToggles and game.save.objectToggles.HALL_OF_FAME
     if toggles then toggles.HALLOFFAME_OAK = nil end
 
+    -- Make the Hall of Fame recording machine interactable.  The console
+    -- juts from the north wall as the two solid cells (4,1) and (5,1); a
+    -- sign on each lets the player face the machine (from below, or from
+    -- either side) and press A to run the TEXT_HALLOFFAME_PC talk script.
+    -- maps.lua is generated from the ROM and gitignored, so the sign is
+    -- injected here (a tracked script) rather than baked into map data.
+    local def = ow.map.def
+    def.signs = def.signs or {}
+    local present = false
+    for _, s in ipairs(def.signs) do
+      if s.text == "TEXT_HALLOFFAME_PC" then present = true break end
+    end
+    if not present then
+      table.insert(def.signs, { text = "TEXT_HALLOFFAME_PC", x = 4, y = 1 })
+      table.insert(def.signs, { text = "TEXT_HALLOFFAME_PC", x = 5, y = 1 })
+    end
+    -- the live Map instance built its signAt lookup from def.signs before
+    -- this hook ran, so rebuild it (idempotent) to pick up the injection
+    ow.map.signAt = {}
+    for _, s in ipairs(def.signs) do
+      ow.map.signAt[s.y * ow.map.widthCells + s.x] = s
+    end
+
     if not game.save.pendingHallOfFame then return end
     game.save.pendingHallOfFame = false
     ow:queueScript({
@@ -626,6 +853,21 @@ M.HALL_OF_FAME = {
       { "record_hall_of_fame" },                       -- predef HallOfFamePC: induction + credits
     })
   end,
+  talk = {
+    -- The recording machine doubles as a "warp home" PC: a YES/NO prompt
+    -- that teleports back to the new-game bedroom spawn (special_warps.asm
+    -- NewGameWarp: REDS_HOUSE_2F, 3, 6, facing down).  Fabricated
+    -- convenience -- there is no such prompt in the original ROM.
+    -- Heal + remember_outdoor so house LAST_MAP mats land in Pallet, not
+    -- Indigo Plateau (issue #103 escape path for already-stuck saves).
+    TEXT_HALLOFFAME_PC = {
+      { "ask", "Return to\nPALLET TOWN?" },             -- 1  YES/NO -> lastCheck
+      { "jump_if_false", "end" },                       -- 2  NO: back away
+      { "heal_party" },                                 -- 3
+      { "remember_outdoor", "PALLET_TOWN", 5, 6 },       -- 4  LAST_MAP -> Pallet door
+      { "warp", "REDS_HOUSE_2F", 3, 6, "down" },        -- 5  YES: home to your room
+    },
+  },
 }
 
 -- -------------------------------------------------------------------
@@ -650,21 +892,65 @@ M.CERULEAN_CITY = {
   },
 }
 
+-- PokemonTower2F.asm: after the battle, PokemonTower2FDefeatedRivalScript
+-- walks him out (RightThenDown vs DownThenRight from EVENT_POKEMON_TOWER_
+-- RIVAL_ON_LEFT) then HideObject TOGGLE_POKEMON_TOWER_2F_RIVAL.  Player
+-- at (15,5) is the ON_LEFT case.
+local TOWER_RIVAL_EXIT_RIGHT_THEN_DOWN =
+  { "right", "down", "down", "right", "down", "down", "right", "right" }
+local TOWER_RIVAL_EXIT_DOWN_THEN_RIGHT =
+  { "down", "down", "right", "right", "right", "right", "down", "down" }
+
+local function pokemonTower2FRivalScript(playerX)
+  local exitDirs = (playerX == 15)
+    and TOWER_RIVAL_EXIT_DOWN_THEN_RIGHT
+    or TOWER_RIVAL_EXIT_RIGHT_THEN_DOWN
+  return {
+    { "face_player" },                                            -- 1
+    { "check_flag", "EVENT_BEAT_POKEMON_TOWER_RIVAL" },           -- 2
+    { "jump_if_true", 12 },                                       -- 3
+    { "show_text", "_PokemonTower2FRivalWhatBringsYouHereText" }, -- 4
+    { "rival_battle", "OPP_RIVAL2", 4 },                          -- 5
+    { "jump_if_false", "end" },                                   -- 6 loss: stay
+    { "set_flag", "EVENT_BEAT_POKEMON_TOWER_RIVAL" },             -- 7
+    { "show_text", "_PokemonTower2FRivalDefeatedText" },          -- 8
+    { "walk_npc", 1, exitDirs },                                  -- 9
+    { "hide_object", "POKEMON_TOWER_2F", "POKEMONTOWER2F_RIVAL" }, -- 10
+    { "jump", "end" },                                            -- 11
+    { "show_text", "_PokemonTower2FRivalHowsYourDexText" },       -- 12
+  }
+end
+
 M.POKEMON_TOWER_2F = {
+  rivalScript = pokemonTower2FRivalScript,
   talk = {
-    TEXT_POKEMONTOWER2F_RIVAL = {
-      { "face_player" },                                            -- 1
-      { "check_flag", "EVENT_BEAT_POKEMON_TOWER_RIVAL" },           -- 2
-      { "jump_if_true", 10 },                                       -- 3
-      { "show_text", "_PokemonTower2FRivalWhatBringsYouHereText" }, -- 4
-      { "rival_battle", "OPP_RIVAL2", 4 },                          -- 5
-      { "jump_if_false", 11 },                                      -- 6
-      { "set_flag", "EVENT_BEAT_POKEMON_TOWER_RIVAL" },             -- 7
-      { "show_text", "_PokemonTower2FRivalDefeatedText" },          -- 8
-      { "jump", 11 },                                               -- 9
-      { "show_text", "_PokemonTower2FRivalHowsYourDexText" },       -- 10
-    },
+    TEXT_POKEMONTOWER2F_RIVAL = function(game, ow, npc, done)
+      ow.runner:run(pokemonTower2FRivalScript(ow.player.cellX),
+                    { npc = npc, onDone = done })
+    end,
   },
+  -- Saves that beat him before the exit walk was ported still have the
+  -- flag but a visible rival; hide on enter like BillsHouse repairs.
+  onEnter = function(game, ow)
+    if not game.save.flags.EVENT_BEAT_POKEMON_TOWER_RIVAL then return end
+    local Commands = require("src.script.Commands")
+    Commands.hide_object({ game = game, save = game.save, overworld = ow },
+                         "POKEMON_TOWER_2F", "POKEMONTOWER2F_RIVAL")
+  end,
+  -- PokemonTower2FDefaultScript: walking past the rival's tile forces
+  -- the encounter (ArePlayerCoordsInArray on (15,5)/(14,6)) -- he never
+  -- waits to be talked to
+  onStep = function(game, ow, x, y)
+    if game.save.flags.EVENT_BEAT_POKEMON_TOWER_RIVAL then return false end
+    if not ((x == 15 and y == 5) or (x == 14 and y == 6)) then return false end
+    if ow.runner:isRunning() then return false end
+    local rival = ow:npcByIndex(1)
+    if not rival then return false end
+    ow.player.facing = (x == 15) and "left" or "up"
+    require("src.core.Music").play(game.data, "Music_MeetRival")
+    ow.runner:run(pokemonTower2FRivalScript(x), { npc = rival })
+    return true
+  end,
 }
 
 -- -------------------------------------------------------------------

data/scripts/story2.lua

@@ -308,8 +308,12 @@ local function saffronGate(guardText, triggers, horizontal)
         end
         if takeGuardDrink(game) then
           game.stack:push(TextBox.new(game,
-            (t._SaffronGateGuardYouCanGoOnThroughText or
-             "Thanks! You can\ngo on through!"), done))
+            t._SaffronGateGuardImParchedText or "Whoa, boy!\nI'm parched!",
+            function()
+              game.stack:push(TextBox.new(game,
+                (t._SaffronGateGuardYouCanGoOnThroughText or
+                 "You can go on\nthrough!"), done))
+            end))
           return
         end
         game.stack:push(TextBox.new(game,
@@ -344,8 +348,12 @@ local function saffronGate(guardText, triggers, horizontal)
       -- for the POKE_FLUTE at all.
       if takeGuardDrink(game) then
         game.stack:push(TextBox.new(game,
-          (t._SaffronGateGuardYouCanGoOnThroughText or
-           "Thanks! You can\ngo on through!")))
+          t._SaffronGateGuardImParchedText or "Whoa, boy!\nI'm parched!",
+          function()
+            game.stack:push(TextBox.new(game,
+              (t._SaffronGateGuardYouCanGoOnThroughText or
+               "You can go on\nthrough!")))
+          end))
         return true
       end
       local back
@@ -355,7 +363,7 @@ local function saffronGate(guardText, triggers, horizontal)
         back = ow.player.facing == "up" and "down" or "up"
       end
       game.stack:push(TextBox.new(game,
-        t._SaffronGateGuardImParchedText or "I'm parched...\nNo entry until\nI get a drink!",
+        t._SaffronGateGuardGeeImThirstyText or "Gee, I'm thirsty\nthough!\nThe road's closed.",
         function()
           ow:scriptMove(ow.player, back, 1)
         end))
@@ -711,73 +719,170 @@ M.CINNABAR_LAB_FOSSIL_ROOM = {
 -- -------------------------------------------------------------------
 -- Day-care (scripts/Daycare.asm): the boarded Pokémon earns 1 exp per
 -- step; the fee is ¥100 plus ¥100 per level gained.
+--
+-- #118: do not raise mon.level until a paid retrieve (pokered reverts
+-- wDayCareMonBoxLevel on .leaveMonInDayCare). Fold pending steps into
+-- mon.exp once and clear them so a second talk cannot re-apply the same
+-- walk. Fill {RAM:wNameBuffer}/{RAM:wDayCareMonName}/{NUM:...} here —
+-- TextBox.TOKENS.RAM only knows wStringBuffer.
 -- -------------------------------------------------------------------
 
+local function fillDaycareText(s, subs)
+  s = s:gsub("{PLAYER}", subs.player or "")
+  s = s:gsub("{RAM:([^}]*)}", function(name) return subs[name] or "" end)
+  -- extractor NUM spans may include flags after a comma; keep the name
+  s = s:gsub("{NUM:([%w_]+)[^}]*}", function(name)
+    return tostring(subs[name] or "0")
+  end)
+  return s
+end
+
 M.DAYCARE = {
   talk = {
     TEXT_DAYCARE_GENTLEMAN = function(game, ow, npc, done)
       local TextBox = require("src.render.TextBox")
-      local ChoiceBox = require("src.ui.ChoiceBox")
       local t = game.data.text
       local dc = game.save.daycare
+      local playerName = game.save.player and game.save.player.name or "RED"
+
+      local function monName(mon)
+        local def = game.data.pokemon[mon.species]
+        return mon.nickname or (def and def.name) or mon.species
+      end
 
       if dc and dc.mon then
         local Growth = require("src.pokemon.Growth")
         local Stats = require("src.pokemon.Stats")
+        local Party = require("src.pokemon.Party")
         local mon = dc.mon
         local def = game.data.pokemon[mon.species]
-        mon.exp = mon.exp + (dc.steps or 0)
-        local newLevel = math.min(100, Growth.levelForExp(def.growthRate, mon.exp))
-        local fee = 100 + (newLevel - mon.level) * 100
-        local grew = newLevel > mon.level
-        mon.level = newLevel
-        mon.stats = Stats.calc(def, mon.level, mon.dvs, mon.statExp)
-        mon.hp = mon.stats.hp
-        local msg = grew and (t._DaycareGentlemanMonHasGrownText or "It's grown a lot!")
-                    or "Back already?"
-        game.stack:push(TextBox.new(game,
-          msg .. ("\fThe fee is ¥%d.\nGet it back?"):format(fee), function()
-          game.stack:push(ChoiceBox.new(game, function(yes)
-            if yes and game.save.money >= fee then
+        -- Apply deferred step-exp once (OverworldController only bumps
+        -- daycare.steps). Clearing prevents double-count on re-talk.
+        mon.exp = (mon.exp or 0) + (dc.steps or 0)
+        dc.steps = 0
+        -- depositLevel mirrors wDayCareMonBoxLevel: fee baseline that
+        -- must survive a declined retrieve. Fall back to mon.level for
+        -- older saves that predate the field.
+        if dc.depositLevel == nil then dc.depositLevel = mon.level end
+        local startLevel = dc.depositLevel
+        local newLevel = Growth.levelForExp(def and def.growthRate, mon.exp)
+        if newLevel >= 100 then
+          newLevel = 100
+          if def then
+            mon.exp = Growth.expForLevel(def.growthRate, 100)
+          end
+        end
+        local levelsGrown = math.max(0, newLevel - startLevel)
+        local fee = 100 + levelsGrown * 100
+        local name = monName(mon)
+        local subs = {
+          player = playerName,
+          wNameBuffer = name,
+          wDayCareMonName = name,
+          wDayCareNumLevelsGrown = levelsGrown,
+          wDayCareTotalCost = fee,
+        }
+        local statusText = levelsGrown > 0
+          and (t._DaycareGentlemanMonHasGrownText
+            or "Your {RAM:wNameBuffer}\nhas grown a lot!\fBy level, it's\ngrown by {NUM:wDayCareNumLevelsGrown, 1, 3}!\fAren't I great?")
+          or (t._DaycareGentlemanMonNeedsMoreTimeText
+            or "Back already?\nYour {RAM:wNameBuffer}\nneeds some more\ntime with me.")
+
+        game.stack:push(TextBox.new(game, fillDaycareText(statusText, subs), function()
+          if #game.save.party >= Party.MAX then
+            game.stack:push(TextBox.new(game,
+              t._DaycareGentlemanNoRoomForMonText
+                or "You have no room\nfor this POKéMON!", done))
+            return
+          end
+          game.stack:push(TextBox.new(game,
+            fillDaycareText(
+              t._DaycareGentlemanOweMoneyText
+                or "You owe me ¥{NUM:wDayCareTotalCost, 2 | LEADING_ZEROES | LEFT_ALIGN}\nfor the return\nof this POKéMON.",
+              subs),
+            nil, { choice = function(yes)
+              if not yes then
+                -- .leaveMonInDayCare: revert any transient level bump
+                mon.level = startLevel
+                game.stack:push(TextBox.new(game,
+                  (t._DaycareGentlemanAllRightThenText or "All right then,\n")
+                    .. (t._DaycareGentlemanComeAgainText or "come again."),
+                  done))
+                return
+              end
+              if (game.save.money or 0) < fee then
+                mon.level = startLevel
+                game.stack:push(TextBox.new(game,
+                  t._DaycareGentlemanNotEnoughMoneyText
+                    or "Hey, you don't\nhave enough ¥!", done))
+                return
+              end
               game.save.money = game.save.money - fee
+              mon.level = newLevel
+              if def then
+                mon.stats = Stats.calc(def, mon.level, mon.dvs, mon.statExp)
+                mon.hp = mon.stats.hp
+              end
               table.insert(game.save.party, mon)
               game.save.daycare = nil
               game.stack:push(TextBox.new(game,
-                t._DaycareGentlemanGotMonBackText or "Here you go!", done))
-            else
-              game.stack:push(TextBox.new(game,
-                yes and (t._DaycareGentlemanOweMoneyText or "You owe me money!")
-                    or "Come again!", done))
-            end
-          end))
+                t._DaycareGentlemanHeresYourMonText
+                  or "Thank you! Here's\nyour POKéMON!", function()
+                game.stack:push(TextBox.new(game,
+                  fillDaycareText(
+                    t._DaycareGentlemanGotMonBackText
+                      or "{PLAYER} got\n{RAM:wDayCareMonName} back!",
+                    subs), done))
+              end))
+            end }))
         end))
         return
       end
 
-      if #game.save.party < 2 then
-        game.stack:push(TextBox.new(game,
-          "You only have one\nPOKéMON with you!", done))
-        return
-      end
       game.stack:push(TextBox.new(game,
-        t._DaycareGentlemanIntroText or "I can raise a\nPOKéMON for you.", function()
-        game.stack:push(ChoiceBox.new(game, function(yes)
-          if not yes then done() return end
-          local PartyMenu = require("src.ui.PartyMenu")
-          game.stack:push(PartyMenu.new(game, {
-            pickOnly = true,
-            onSwitch = function(mon)
-              for i, m in ipairs(game.save.party) do
-                if m == mon then table.remove(game.save.party, i) break end
-              end
-              game.save.daycare = { mon = mon, steps = 0 }
-              game.stack:push(TextBox.new(game,
-                t._DaycareGentlemanWillLookAfterMonText or
-                "Fine, I'll look\nafter it a while!", done))
-            end,
-          }))
-        end))
-      end))
+        t._DaycareGentlemanIntroText
+          or "I run a DAYCARE.\nWould you like me\nto raise one of\nyour POKéMON?",
+        nil, { choice = function(yes)
+          if not yes then
+            game.stack:push(TextBox.new(game,
+              t._DaycareGentlemanComeAgainText or "come again.", done))
+            return
+          end
+          if #game.save.party < 2 then
+            game.stack:push(TextBox.new(game,
+              t._DaycareGentlemanOnlyHaveOneMonText
+                or "You only have one\nPOKéMON with you.", done))
+            return
+          end
+          game.stack:push(TextBox.new(game,
+            t._DaycareGentlemanWhichMonText or "Which POKéMON\nshould I raise?",
+            function()
+              local PartyMenu = require("src.ui.PartyMenu")
+              game.stack:push(PartyMenu.new(game, {
+                pickOnly = true,
+                onSwitch = function(mon)
+                  for i, m in ipairs(game.save.party) do
+                    if m == mon then table.remove(game.save.party, i) break end
+                  end
+                  local name = monName(mon)
+                  -- depositLevel = wDayCareMonBoxLevel at deposit time
+                  game.save.daycare = {
+                    mon = mon, steps = 0, depositLevel = mon.level,
+                  }
+                  game.stack:push(TextBox.new(game,
+                    fillDaycareText(
+                      t._DaycareGentlemanWillLookAfterMonText
+                        or "Fine, I'll look\nafter {RAM:wNameBuffer}\nfor a while.",
+                      { player = playerName, wNameBuffer = name }),
+                    function()
+                      game.stack:push(TextBox.new(game,
+                        t._DaycareGentlemanComeSeeMeInAWhileText
+                          or "Come see me in\na while.", done))
+                    end))
+                end,
+              }))
+            end))
+        end }))
     end,
   },
 }

data/scripts/story3.lua

@@ -61,6 +61,50 @@ M.ROUTE_12_SUPER_ROD_HOUSE = {
 M.ROUTE_12_SUPER_ROD_HOUSE.talk.TEXT_ROUTE12SUPERRODHOUSE_FISHING_GURU[9] =
   { "show_text", "_Route12SuperRodHouseFishingGuruTryFishingText" }
 
+-- -------------------------------------------------------------------
+-- Pokemon Tower 5F purified zone (scripts/PokemonTower5F.asm
+-- PokemonTower5FDefaultScript): the 2x2 center pad heals the party once
+-- per visit.  EVENT_IN_PURIFIED_ZONE latches until the player steps off;
+-- while on the pad the map script also sets BIT_NO_BATTLES (we return
+-- true from onStep so wild encounters are skipped the same way).
+-- -------------------------------------------------------------------
+
+local TOWER_5F_PURIFIED = {
+  [10 * 256 + 8] = true, [11 * 256 + 8] = true,
+  [10 * 256 + 9] = true, [11 * 256 + 9] = true,
+}
+
+-- HealParty -> GBFadeOutToWhite -> Delay3 -> Delay3 -> GBFadeInFromWhite
+-- -> TEXT_POKEMONTOWER5F_PURIFIEDZONE (no Music_PkmnHealed).
+local TOWER_5F_HEAL = {
+  { "heal_party" },
+  { "fade", "out", "white" },
+  { "wait", 3 },
+  { "wait", 3 },
+  { "fade", "in", "white" },
+  { "show_text", "_PokemonTower5FPurifiedZoneText" },
+}
+
+M.POKEMON_TOWER_5F = {
+  onStep = function(game, ow, x, y)
+    if not TOWER_5F_PURIFIED[x * 256 + y] then
+      game.save.flags.EVENT_IN_PURIFIED_ZONE = nil
+      return false
+    end
+    if game.save.flags.EVENT_IN_PURIFIED_ZONE then
+      return true
+    end
+    if ow.runner and ow.runner:isRunning() then return false end
+    game.save.flags.EVENT_IN_PURIFIED_ZONE = true
+    if ow.runner then
+      ow.runner:run(TOWER_5F_HEAL)
+    elseif ow.queueScript then
+      ow:queueScript(TOWER_5F_HEAL)
+    end
+    return true
+  end,
+}
+
 -- -------------------------------------------------------------------
 -- The ghost Marowak (scripts/PokemonTower6F.asm): blocks the stairs at
 -- (10,16) until defeated.
@@ -150,18 +194,20 @@ local WALK_DIRVEC = { up = { 0, -1 }, down = { 0, 1 }, left = { -1, 0 }, right =
 local WALK_OPP = { up = "down", down = "up", left = "right", right = "left" }
 local WALK_ORDER = { "up", "down", "left", "right" }
 
-local function elevatorWalkOut(ow, floor)
-  local m, p = ow.map, ow.player
-  -- .UpdateWarp is run twice, so BOTH car warp entries get the same
-  -- (warp id, map id): point every exit warp at the picked floor's
-  -- elevator-door warp (the reciprocal warp found while building the
-  -- menu).  The car map's def is shared generated data, but its own
-  -- warps are only ever read from inside the car, and this rewrite runs
-  -- on every ride before the walk-out fires, so it is self-correcting.
-  for _, w in ipairs(m.def.warps) do
+-- .UpdateWarp: point EVERY car exit warp at the same floor's elevator
+-- door (warp id, map id).  Shared generated map data, but the car's
+-- warps are only read from inside the car; rides rewrite them again.
+local function elevatorSetExit(ow, floor)
+  if not floor then return end
+  for _, w in ipairs(ow.map.def.warps) do
     w.destMap = floor.map
     w.destWarp = floor.warpIdx
   end
+end
+
+local function elevatorWalkOut(ow, floor)
+  local m, p = ow.map, ow.player
+  elevatorSetExit(ow, floor)
   -- leave by the exit tile under the player (they warped in onto one),
   -- else the nearest
   local door
@@ -199,37 +245,68 @@ local function elevatorWalkOut(ow, floor)
   end)
 end
 
+local function elevatorFloors(elevatorMapId, game)
+  local floors = {}
+  for mapId, def in pairs(game.data.maps) do
+    for i, w in ipairs(def.warps) do
+      if w.destMap == elevatorMapId then
+        -- short floor token pokered actually prints, e.g.
+        -- SILPH_CO_10F -> "10F", ROCKET_HIDEOUT_B2F -> "B2F"
+        local token = mapId:match("_([^_]+)$") or mapId
+        -- warpIdx: this floor's warp back into the elevator IS the
+        -- warp the car's rewritten exit lands on (the reciprocal
+        -- pair), matching wElevatorWarpMaps' (warp id, map id)
+        table.insert(floors,
+          { map = mapId, x = w.x, y = w.y, token = token, warpIdx = i })
+        break
+      end
+    end
+  end
+  -- numeric floor order (SilphCoElevatorFloors' FLOOR_1F..FLOOR_11F),
+  -- not lexicographic -- otherwise 10F/11F sort before 2F..9F
+  table.sort(floors, function(a, b)
+    return (tonumber(a.token:match("%d+")) or 0) <
+           (tonumber(b.token:match("%d+")) or 0)
+  end)
+  return floors
+end
+
+local function elevatorSeedExit(ow, floors, fromMapId)
+  -- Seed a walk-out destination before the menu (or key-gate text):
+  -- entry floor when known, else the first listed floor (1F).  Choosing
+  -- a floor still rewrites via elevatorWalkOut; B-cancel / no-key leave
+  -- keeps this seed so walking out of the car cannot hit a missing ROM
+  -- placeholder (#123) or the car's static default floor (#90: Rocket
+  -- Hideout defaults to B1F even when entered from B2F/B4F).
+  local exitFloor = floors[1]
+  if fromMapId then
+    for _, f in ipairs(floors) do
+      if f.map == fromMapId then exitFloor = f break end
+    end
+  end
+  elevatorSetExit(ow, exitFloor)
+  return exitFloor
+end
+
 local function elevator(elevatorMapId, keyGate, preFrames)
   return {
-    onEnter = function(game, ow)
+    -- fromMapId: the floor the player just left (setMap passes it), so a
+    -- B-cancel can still walk out onto a real map.  Silph's ROM car warps
+    -- default to UNUSED_MAP_ED, which is not in Data.maps -- Warp.resolve
+    -- asserted and hard-crashed (#123).
+    onEnter = function(game, ow, fromMapId)
+      local floors = elevatorFloors(elevatorMapId, game)
+      elevatorSeedExit(ow, floors, fromMapId)
+      -- Rocket Hideout: without LIFT_KEY the panel only prints the need-
+      -- a-key line (scripts/RocketHideoutElevator.asm).  Exit warps are
+      -- still seeded above so walking out returns to the entry floor
+      -- instead of the car's ROM default (B1F) — #90 / #105.
       if keyGate and not game.save.inventory[keyGate.item] then
         local TextBox = require("src.render.TextBox")
         game.stack:push(TextBox.new(game,
           game.data.text[keyGate.text] or "It appears to\nneed a key."))
         return
       end
-      local floors = {}
-      for mapId, def in pairs(game.data.maps) do
-        for i, w in ipairs(def.warps) do
-          if w.destMap == elevatorMapId then
-            -- short floor token pokered actually prints, e.g.
-            -- SILPH_CO_10F -> "10F", ROCKET_HIDEOUT_B2F -> "B2F"
-            local token = mapId:match("_([^_]+)$") or mapId
-            -- warpIdx: this floor's warp back into the elevator IS the
-            -- warp the car's rewritten exit lands on (the reciprocal
-            -- pair), matching wElevatorWarpMaps' (warp id, map id)
-            table.insert(floors,
-              { map = mapId, x = w.x, y = w.y, token = token, warpIdx = i })
-            break
-          end
-        end
-      end
-      -- numeric floor order (SilphCoElevatorFloors' FLOOR_1F..FLOOR_11F),
-      -- not lexicographic -- otherwise 10F/11F sort before 2F..9F
-      table.sort(floors, function(a, b)
-        return (tonumber(a.token:match("%d+")) or 0) <
-               (tonumber(b.token:match("%d+")) or 0)
-      end)
       local items = {}
       for _, f in ipairs(floors) do
         table.insert(items, { label = f.token, value = f })
@@ -262,7 +339,8 @@ local function elevator(elevatorMapId, keyGate, preFrames)
         end,
         onCancel = function()
           -- DisplayElevatorFloorMenu: `ret c` on B -- no warp, nothing
-          -- happens, the player just stays in the car
+          -- happens, the player just stays in the car (exit warps were
+          -- already seeded to the entry floor above)
         end,
       }))
     end,
@@ -274,6 +352,98 @@ M.CELADON_MART_ELEVATOR = elevator("CELADON_MART_ELEVATOR", nil, 9)
 M.ROCKET_HIDEOUT_ELEVATOR = elevator("ROCKET_HIDEOUT_ELEVATOR",
   { item = "LIFT_KEY", text = "_RocketHideoutElevatorAppearsToNeedKeyText" })
 
+-- -------------------------------------------------------------------
+-- Rocket Hideout B4F (scripts/RocketHideoutB4F.asm):
+--   Rocket3's after-battle text_asm drops the LIFT KEY item ball
+--   (CheckAndSetEvent EVENT_ROCKET_DROPPED_LIFT_KEY / ShowObject
+--   TOGGLE_ROCKET_HIDEOUT_B4F_ITEM_5).  Both start hidden in the map
+--   objects; without this talk side-effect the key never appears (#90,
+--   #105).
+--   Giovanni's post-battle script likewise ShowObject's the Silph Scope
+--   after the hope-we-meet-again line (TOGGLE_ROCKET_HIDEOUT_B4F_ITEM_4).
+-- -------------------------------------------------------------------
+
+M.ROCKET_HIDEOUT_B4F = {
+  talk = {
+    TEXT_ROCKETHIDEOUTB4F_ROCKET3 = function(game, ow, npc, done)
+      if not ow:trainerDefeated(npc) then
+        ow:engageTrainer(npc, done)
+        return
+      end
+      local TextBox = require("src.render.TextBox")
+      local t = game.data.text
+      game.stack:push(TextBox.new(game,
+        t._RocketHideoutB4FRocket3AfterBattleText
+        or "Oh no! I dropped\nthe LIFT KEY!",
+        function()
+          -- CheckAndSetEvent EVENT_ROCKET_DROPPED_LIFT_KEY: first talk
+          -- after the win reveals the ball; later talks only reprint.
+          if not game.save.flags.EVENT_ROCKET_DROPPED_LIFT_KEY then
+            game.save.flags.EVENT_ROCKET_DROPPED_LIFT_KEY = true
+            local Commands = require("src.script.Commands")
+            Commands.show_object(
+              { game = game, save = game.save, overworld = ow },
+              "ROCKET_HIDEOUT_B4F", "ROCKETHIDEOUTB4F_LIFT_KEY")
+          end
+          done()
+        end))
+    end,
+
+    TEXT_ROCKETHIDEOUTB4F_GIOVANNI = function(game, ow, npc, done)
+      -- Giovanni has no trainer-header row (def_trainers 2); his text_asm
+      -- owns both the engage and the BeatGiovanniScript aftermath.
+      if ow:trainerDefeated(npc)
+         or game.save.flags.EVENT_BEAT_ROCKET_HIDEOUT_GIOVANNI then
+        local TextBox = require("src.render.TextBox")
+        game.stack:push(TextBox.new(game,
+          game.data.text._RocketHideoutB4FGiovanniHopeWeMeetAgainText
+          or "I hope we meet\nagain...", done))
+        return
+      end
+      local TextBox = require("src.render.TextBox")
+      local BattleState = require("src.battle.BattleState")
+      local t = game.data.text
+      local impressed = t._RocketHideoutB4FGiovanniImpressedYouGotHereText
+                        or "So! I must say, I\nam impressed you\ngot here!"
+      local cannotBe = t._RocketHideoutB4FGiovanniWhatCannotBeText
+                       or "WHAT!\nThis cannot be!"
+      local hope = t._RocketHideoutB4FGiovanniHopeWeMeetAgainText
+                   or "I hope we meet\nagain..."
+      game.stack:push(TextBox.new(game, impressed, function()
+        local battle = BattleState.newTrainer(game, "OPP_GIOVANNI", 1)
+        battle.onFinish = function(result)
+          if result ~= "win" then
+            ow:afterBattle(result, battle)
+            done()
+            return
+          end
+          game.save.defeatedTrainers[npc.id] = true
+          game.save.flags.EVENT_BEAT_ROCKET_HIDEOUT_GIOVANNI = true
+          -- End-battle "WHAT!" then BeatGiovanniScript's hope text,
+          -- fade, HideObject Giovanni, ShowObject Silph Scope.
+          game.stack:push(TextBox.new(game, cannotBe, function()
+            game.stack:push(TextBox.new(game, hope, function()
+              local Transition = require("src.render.Transition")
+              game.stack:push(Transition.new(game, function()
+                local Commands = require("src.script.Commands")
+                local ctx = { game = game, save = game.save, overworld = ow }
+                Commands.hide_object(ctx, "ROCKET_HIDEOUT_B4F",
+                  "ROCKETHIDEOUTB4F_GIOVANNI")
+                Commands.show_object(ctx, "ROCKET_HIDEOUT_B4F",
+                  "ROCKETHIDEOUTB4F_SILPH_SCOPE")
+              end, function()
+                ow:afterBattle(result, battle)
+                done()
+              end))
+            end))
+          end))
+        end
+        ow:pushBattle(battle)
+      end))
+    end,
+  },
+}
+
 -- -------------------------------------------------------------------
 -- Game Corner coins, prizes, and the rocket-poster switch that reveals
 -- the hideout stairs (scripts/GameCorner.asm, data/events/prizes.asm +
@@ -286,14 +456,23 @@ M.GAME_CORNER = {
   -- EVENT_FOUND_ROCKET_HIDEOUT is unset, $43 after)
   onEnter = function(game, ow)
     local poster = game.data.field.gameCornerPoster
-    if not poster then return end
-    local block = game.save.flags[poster.event] and poster.openBlock
-                  or poster.closedBlock
-    ow:replaceBlock(poster.x, poster.y, block)
+    if poster then
+      local block = game.save.flags[poster.event] and poster.openBlock
+                    or poster.closedBlock
+      ow:replaceBlock(poster.x, poster.y, block)
+    end
     -- pick this visit's lucky slot machine
     -- (wLuckySlotHiddenEventIndex, engine/slots/game_corner_slots2.asm)
     local seats = game.data.field.slotMachines.GAME_CORNER
     ow.luckySlot = love.math.random(1, #seats)
+    -- #131: pre-#50 saves beat the poster grunt (defeatedTrainers) but
+    -- never hid him; clear the tile if he is already marked defeated
+    local rocketId = "GAME_CORNER_obj_11"
+    if game.save.defeatedTrainers and game.save.defeatedTrainers[rocketId] then
+      local Commands = require("src.script.Commands")
+      Commands.hide_object({ game = game, save = game.save, overworld = ow },
+                           "GAME_CORNER", "GAMECORNER_ROCKET")
+    end
   end,
   talk = {
     -- the poster bg event: pressing A reveals the hidden switch
@@ -317,6 +496,39 @@ M.GAME_CORNER = {
         done()
       end))
     end,
+    -- the grunt guarding the poster (GameCornerRocketText /
+    -- GameCornerRocketBattleScript / GameCornerRocketExitScript): after
+    -- losing he warns the BOSS and leaves the floor for good, freeing
+    -- the tile in front of the hideout switch
+    TEXT_GAMECORNER_ROCKET = function(game, ow, npc, done)
+      local Commands = require("src.script.Commands")
+      local function hideRocket()
+        Commands.hide_object({ game = game, save = game.save,
+                               overworld = ow },
+                             "GAME_CORNER", "GAMECORNER_ROCKET")
+      end
+      -- already beaten: hide anyway so pre-#50 saves that only have
+      -- defeatedTrainers (no objectToggles hide) clear the poster tile
+      if ow:trainerDefeated(npc) then
+        hideRocket()
+        done()
+        return
+      end
+      ow:engageTrainer(npc, function()
+        if not ow:trainerDefeated(npc) then
+          done()
+          return
+        end
+        local TextBox = require("src.render.TextBox")
+        game.stack:push(TextBox.new(game,
+          game.data.text._GameCornerRocketAfterBattleText
+          or "Our hideout might\nbe discovered! I\nbetter tell BOSS!",
+          function()
+            hideRocket()
+            done()
+          end))
+      end)
+    end,
     TEXT_GAMECORNER_CLERK1 = function(game, ow, npc, done)
       local TextBox = require("src.render.TextBox")
       local ChoiceBox = require("src.ui.ChoiceBox")
@@ -363,24 +575,42 @@ M.GAME_CORNER = {
   },
 }
 
--- Red-version prize lists (data/events/prizes.asm, prize_mon_levels.asm)
-local PRIZES = {
+-- Game Corner prize lists (data/events/prizes.asm, prize_mon_levels.asm).
+-- The six mon prizes differ between Red and Blue; the three TM prizes are
+-- identical, so they are shared and appended to each version's mon list.
+local PRIZE_TMS = {
+  { kind = "item", item = "TM_DRAGON_RAGE", cost = 3300 },
+  { kind = "item", item = "TM_HYPER_BEAM", cost = 5500 },
+  { kind = "item", item = "TM_SUBSTITUTE", cost = 7700 },
+}
+local RED_PRIZES = {
   { kind = "mon", species = "ABRA", level = 9, cost = 180 },
   { kind = "mon", species = "CLEFAIRY", level = 8, cost = 500 },
   { kind = "mon", species = "NIDORINA", level = 17, cost = 1200 },
   { kind = "mon", species = "DRATINI", level = 18, cost = 2800 },
   { kind = "mon", species = "SCYTHER", level = 25, cost = 5500 },
   { kind = "mon", species = "PORYGON", level = 26, cost = 9999 },
-  { kind = "item", item = "TM_DRAGON_RAGE", cost = 3300 },
-  { kind = "item", item = "TM_HYPER_BEAM", cost = 5500 },
-  { kind = "item", item = "TM_SUBSTITUTE", cost = 7700 },
+  PRIZE_TMS[1], PRIZE_TMS[2], PRIZE_TMS[3],
 }
+local BLUE_PRIZES = {
+  { kind = "mon", species = "ABRA", level = 6, cost = 120 },
+  { kind = "mon", species = "CLEFAIRY", level = 12, cost = 750 },
+  { kind = "mon", species = "NIDORINO", level = 17, cost = 1200 },
+  { kind = "mon", species = "PINSIR", level = 20, cost = 2500 },
+  { kind = "mon", species = "DRATINI", level = 24, cost = 4600 },
+  { kind = "mon", species = "PORYGON", level = 18, cost = 6500 },
+  PRIZE_TMS[1], PRIZE_TMS[2], PRIZE_TMS[3],
+}
+
+local function activePrizes()
+  return require("src.core.GameVersion").isBlue() and BLUE_PRIZES or RED_PRIZES
+end
 
 local function prizeCounter(game, ow, npc, done)
   local ListMenu = require("src.ui.ListMenu")
   local Commands = require("src.script.Commands")
   local items = {}
-  for _, p in ipairs(PRIZES) do
+  for _, p in ipairs(activePrizes()) do
     local label
     if p.kind == "mon" then
       label = ("%s L%d"):format(game.data.pokemon[p.species].name, p.level)
@@ -425,18 +655,63 @@ M.GAME_CORNER_PRIZE_ROOM = {
 -- and the player steps off the dock, the ship sets sail.
 -- -------------------------------------------------------------------
 
+-- the ship's hull/deck blocks (block cols 5-8, rows 1-2) and the water
+-- that replaces them once she sails (the surrounding blocks of each row)
+local DOCK_SHIP_BLOCKS = {
+  { bx = 5, by = 1, water = 1 }, { bx = 6, by = 1, water = 1 },
+  { bx = 7, by = 1, water = 1 }, { bx = 8, by = 1, water = 1 },
+  { bx = 5, by = 2, water = 13 }, { bx = 6, by = 2, water = 13 },
+  { bx = 7, by = 2, water = 13 }, { bx = 8, by = 2, water = 13 },
+}
+
 M.VERMILION_DOCK = {
   onEnter = function(game, ow)
-    if game.save.flags.EVENT_SS_ANNE_LEFT then
+    local Flags = require("src.script.Flags")
+    local f = game.save.flags
+    if Flags.get(game.save, "EVENT_SS_ANNE_LEFT") then
+      -- the ship is long gone: erase her right away, and anyone who
+      -- still lands here is sent back out past the guard
+      for _, b in ipairs(DOCK_SHIP_BLOCKS) do
+        ow.map:setBlock(b.bx, b.by, b.water)
+      end
+      ow.map.renderer:rebuild()
       local TextBox = require("src.render.TextBox")
       game.stack:push(TextBox.new(game,
         game.data.text._VermilionCitySailor1ShipSetSailText
         or "The ship set sail.", function()
-        ow:startWarpTo("VERMILION_CITY", 19, 30, "up")
+        ow:startWarpTo("VERMILION_CITY", 18, 29, "up")
       end))
-    elseif game.save.flags.EVENT_GOT_HM01 then
-      game.save.flags.EVENT_SS_ANNE_LEFT = true
-      require("src.core.Sound").play(game.data, "SS_Anne_Horn")
+    elseif f.EVENT_GOT_HM01 and ow.player.cellY == 2 then
+      -- VermilionDockSSAnneLeavesScript: only stepping OFF the ship
+      -- triggers the departure (wDestinationWarpID == 1 in pokered) --
+      -- Music_Surfing plays for the sail-away cutscene, smoke puffs
+      -- drift off the funnel, the horn blows, the ship is erased to
+      -- open water, and the player is walked off the dock into the
+      -- city past the guard (VermilionCity's
+      -- SCRIPT_VERMILIONCITY_PLAYER_EXIT_SHIP walk)
+      Flags.set(game.save, "EVENT_SS_ANNE_LEFT")
+      local Music = require("src.core.Music")
+      Music.stop()
+      Music.play(game.data, "Music_Surfing")
+      local function puff(n, cx)
+        if n <= 0 then return end
+        ow:startDustAnim(cx, 1, function() puff(n - 1, cx + 2) end)
+      end
+      puff(3, 15)
+      local rows = {}
+      rows[#rows + 1] = { "wait", 100 }
+      rows[#rows + 1] = { "play_sound", "SS_Anne_Horn" }
+      for _, b in ipairs(DOCK_SHIP_BLOCKS) do
+        rows[#rows + 1] = { "replace_block", b.bx, b.by, b.water }
+      end
+      rows[#rows + 1] = { "wait", 30 }
+      rows[#rows + 1] = { "move_player", "up", 2 }
+      -- keep Music_Surfing across the city warp (pokered stays on it
+      -- through the exit-ship walk)
+      rows[#rows + 1] = { "play_music", "Music_Surfing", { keep = true } }
+      rows[#rows + 1] = { "warp", "VERMILION_CITY", 18, 31, "up" }
+      rows[#rows + 1] = { "move_player", "up", 2 }
+      ow:queueScript(rows)
     end
   end,
 }

data/scripts/story4.lua

@@ -457,6 +457,25 @@ M.ROUTE_24 = {
       battleOrDone()
     end,
   },
+  -- Route24DefaultScript forces TEXT_ROUTE24_COOLTRAINER_M1 whenever the
+  -- player stands on (10,15) in front of the recruiter while
+  -- EVENT_GOT_NUGGET is unset (dbmapcoord 10,15), independent of facing
+  -- or input -- he has no trainer header, so sight never engages him.
+  onStep = function(game, ow, x, y)
+    if game.save.flags.EVENT_GOT_NUGGET then return false end
+    if not (x == 10 and y == 15) then return false end
+    if ow.runner:isRunning() or ow.engaging then return false end
+    local recruiter
+    for _, npc in ipairs(ow.npcs) do
+      if npc.def and npc.def.name == "ROUTE24_COOLTRAINER_M1" then
+        recruiter = npc
+        break
+      end
+    end
+    if not recruiter then return false end
+    ow:showMapText("TEXT_ROUTE24_COOLTRAINER_M1", recruiter)
+    return true
+  end,
 }
 
 -- -------------------------------------------------------------------
@@ -626,12 +645,44 @@ local function e4ExitSeal(flag, closedBlock, openBlock, dontRunText, autoFlag)
   }
 end
 
+-- Lorelei/Bruno/Agatha EndBattleScript (pokered): EndTrainerBattle then
+-- DisplayTextID -> TalkToTrainer, which prints the AfterBattle text on a
+-- win.  engageTrainer only shows the won line, so wrap talk like Lance /
+-- Game Corner Rocket and push header.after immediately after a win.
+local function e4LeaderTalk(afterLabel)
+  return function(game, ow, npc, done)
+    done = done or function() end
+    if ow:trainerDefeated(npc) then
+      local after = text(game)[afterLabel]
+      if after then push(game, after, done) else done() end
+      return
+    end
+    ow:engageTrainer(npc, function()
+      if not ow:trainerDefeated(npc) then
+        done()
+        return
+      end
+      local after = text(game)[afterLabel]
+      if after then push(game, after, done) else done() end
+    end)
+  end
+end
+
 M.LORELEIS_ROOM = e4ExitSeal("EVENT_BEAT_LORELEIS_ROOM_TRAINER_0", 0x24, 0x05,
   "_LoreleisRoomLoreleiDontRunAwayText", "EVENT_AUTOWALKED_INTO_LORELEIS_ROOM")
+M.LORELEIS_ROOM.talk = {
+  TEXT_LORELEISROOM_LORELEI = e4LeaderTalk("_LoreleisRoomLoreleiAfterBattleText"),
+}
 M.BRUNOS_ROOM = e4ExitSeal("EVENT_BEAT_BRUNOS_ROOM_TRAINER_0", 0x24, 0x05,
   "_BrunosRoomBrunoDontRunAwayText", "EVENT_AUTOWALKED_INTO_BRUNOS_ROOM")
+M.BRUNOS_ROOM.talk = {
+  TEXT_BRUNOSROOM_BRUNO = e4LeaderTalk("_BrunoAfterBattleText"),
+}
 M.AGATHAS_ROOM = e4ExitSeal("EVENT_BEAT_AGATHAS_ROOM_TRAINER_0", 0x3b, 0x0e,
   "_AgathasRoomAgathaDontRunAwayText", "EVENT_AUTOWALKED_INTO_AGATHAS_ROOM")
+M.AGATHAS_ROOM.talk = {
+  TEXT_AGATHASROOM_AGATHA = e4LeaderTalk("_AgathaAfterBattleText"),
+}
 
 -- -------------------------------------------------------------------
 -- Lance's room (scripts/LancesRoom.asm). Unlike the other three E4
@@ -653,13 +704,21 @@ M.AGATHAS_ROOM = e4ExitSeal("EVENT_BEAT_AGATHAS_ROOM_TRAINER_0", 0x3b, 0x0e,
 --                 EVENT_LANCES_ROOM_LOCK_DOOR: first crossing seals
 --                 the door behind the player with SFX_GO_INSIDE
 --   (24,16)       the entrance staircase -> WalkToLance: an auto-walk
---                 (up 12, left 12, down 7, left 6) landing on (6,11).
---                 It marches straight across the room's water decor:
---                 pokered's CollisionCheckOnLand skips collision
---                 entirely while simulated joypad states run, and our
---                 scriptMove is collision-free the same way.
+--                 landing on (6,11). Vanilla WalkToLance_RLEList is
+--                 up 12 / left 12 / down 7 / left 6 and skips collision
+--                 through void tiles; our camera follows that literally
+--                 and briefly shows the empty upper chamber (reads as
+--                 "Gary's room"). We keep the same landing cell but
+--                 route along the open-door floor corridor instead.
 -- -------------------------------------------------------------------
 
+-- Floor corridor (24,16) -> (6,11) with EVENT_LANCES_ROOM_LOCK_DOOR
+-- unset (entrance blocks $31/$32). Exposed for parity tests.
+local LANCE_WALK_IN = {
+  { "down", 2 }, { "left", 6 }, { "down", 5 }, { "left", 10 },
+  { "up", 9 }, { "left", 2 }, { "up", 3 },
+}
+
 local function lanceEntranceBlocks(game, ow)
   local locked = game.save.flags.EVENT_LANCES_ROOM_LOCK_DOOR
   ow:replaceBlock(2, 6, locked and 0x72 or 0x31)
@@ -674,21 +733,24 @@ local function lanceLockDoor(game, ow)
 end
 
 local function lanceWalkIn(game, ow)
-  ow:scriptMove(ow.player, "up", 12, function()
-    ow:scriptMove(ow.player, "left", 12, function()
-      ow:scriptMove(ow.player, "down", 7, function()
-        ow:scriptMove(ow.player, "left", 6, function()
-          -- the walk lands on (6,11); vanilla's per-frame coord poll
-          -- then locks the door at once. scriptMove landings do not
-          -- fire onStep, so lock here.
-          lanceLockDoor(game, ow)
-        end)
-      end)
-    end)
-  end)
+  local i = 0
+  local function step()
+    i = i + 1
+    local seg = LANCE_WALK_IN[i]
+    if not seg then
+      -- lands on (6,11); vanilla's per-frame coord poll then locks the
+      -- door at once. scriptMove landings do not fire onStep, so lock
+      -- here.
+      lanceLockDoor(game, ow)
+      return
+    end
+    ow:scriptMove(ow.player, seg[1], seg[2], step)
+  end
+  step()
 end
 
 M.LANCES_ROOM = {
+  walkInRoute = LANCE_WALK_IN,
   onEnter = function(game, ow)
     lanceEntranceBlocks(game, ow)
     -- the warp arrival lands ON the staircase trigger, and onStep only
@@ -708,7 +770,14 @@ M.LANCES_ROOM = {
       end
       if not lance or ow:trainerDefeated(lance) then return false end
       lance:facePlayer(ow.player)
-      ow:engageTrainer(lance, function() end)
+      -- LancesRoomLanceEndBattleScript DisplayTextID -> TalkToTrainer
+      -- after-battle text (rival became champion first). engageTrainer
+      -- only shows the won line, so push the after text on a win.
+      ow:engageTrainer(lance, function()
+        if not ow:trainerDefeated(lance) then return end
+        local after = text(game)._LancesRoomLanceAfterBattleText
+        if after then push(game, after) end
+      end)
       return true
     end
     if (x == 5 or x == 6) and y == 11 then
@@ -723,4 +792,6 @@ M.LANCES_ROOM = {
   end,
 }
 
+M.CELADON_CHIEF_HOUSE = require("data.scripts.celadon_chief_house")
+
 return M

data/scripts/story5.lua

@@ -259,23 +259,183 @@ M.CINNABAR_ISLAND = {
   end,
 }
 
--- Pewter's youngster stops you leaving east before Brock is beaten
--- (scripts/PewterCity.asm PewterCityCheckPlayerLeavingEastScript; the
--- original escorts you to the gym, we walk you back a step)
+-- Pewter's youngster stops you leaving east before Brock is beaten and
+-- escorts you to the gym (scripts/PewterCity.asm
+-- PewterCityCheckPlayerLeavingEastScript /
+-- PewterCityYoungsterShowsPlayerGymScript, engine/overworld/auto_movement.asm
+-- PewterGymGuyMovementScriptPointerTable, engine/events/pewter_guys.asm
+-- PewterGymGuyCoords).  Same lockstep style as Oak's lab escort: the
+-- youngster walks RLEList_PewterGymGuy while the player plays the
+-- reverse of RLEList_PewterGymPlayer with a PewterGuys positioning
+-- preamble.  Ends at (11,18) / (12,18) by the gym, not phasing through
+-- the building.
+local pewterEscort = {}
+
+-- RLEList_PewterGymGuy (NPC directions play forward)
+pewterEscort.guySteps = {
+  "down", "down",
+  "left", "left", "left", "left", "left", "left", "left", "left",
+  "left", "left", "left", "left", "left", "left", "left",
+  "up", "up", "up", "up", "up",
+  "left", "left", "left", "left", "left", "left", "left", "left",
+  "left", "left", "left",
+  "down", "down", "down", "down", "down",
+  "right", "right", "right",
+}
+
+-- Walk home: reverse of guySteps with opposite facings (gym → spawn).
+do
+  local opp = { up = "down", down = "up", left = "right", right = "left" }
+  local ret = {}
+  for i = #pewterEscort.guySteps, 1, -1 do
+    ret[#ret + 1] = opp[pewterEscort.guySteps[i]]
+  end
+  pewterEscort.guyReturnSteps = ret
+end
+
+-- RLEList_PewterGymPlayer before reverse / PewterGuys (NO_INPUT, RIGHT×2,
+-- DOWN×5, LEFT×11, UP×5, LEFT×15)
+pewterEscort.playerRle = {
+  "NO",
+  "right", "right",
+  "down", "down", "down", "down", "down",
+  "left", "left", "left", "left", "left", "left", "left", "left",
+  "left", "left", "left",
+  "up", "up", "up", "up", "up",
+  "left", "left", "left", "left", "left", "left", "left", "left",
+  "left", "left", "left", "left", "left", "left", "left",
+}
+
+-- PewterGymGuyCoords: (x, y) -> positioning moves written after the RLE
+-- (played in reverse; $00 pauses are one overworld frame ≈ 1/8 tile for
+-- the NPC, so eight of them ≈ one guy head-start step)
+pewterEscort.preambles = {
+  ["34,16"] = { "left", "down", "down", "right" },
+  ["35,17"] = { "left", "down", "right", "left" },
+  ["37,18"] = { "left", "left", "left",
+                "NO", "NO", "NO", "NO", "NO", "NO", "NO", "NO" },
+  ["37,19"] = { "left", "left", "up", "left" },
+  ["36,17"] = { "left", "down", "left",
+                "NO", "NO", "NO", "NO", "NO", "NO", "NO", "NO" },
+}
+
+-- Realized player path for a trigger tile: PewterGuys overwrites the
+-- last RLE byte and appends the preamble, then simulated joypad plays
+-- high→low (reverse).  Leading NO×8 collapses to guyHeadStart=1; the
+-- trailing end-of-list NO is dropped (one-frame pause).
+function pewterEscort.playerPlan(x, y)
+  local pre = pewterEscort.preambles[x .. "," .. y]
+  if not pre then return nil end
+  local buf = {}
+  for i, d in ipairs(pewterEscort.playerRle) do buf[i] = d end
+  buf[#buf] = pre[1]
+  for i = 2, #pre do buf[#buf + 1] = pre[i] end
+  local path = {}
+  for i = #buf, 1, -1 do path[#path + 1] = buf[i] end
+  local head = 0
+  while path[head + 1] == "NO" do head = head + 1 end
+  local tail = #path
+  while tail > head and path[tail] == "NO" do tail = tail - 1 end
+  local steps = {}
+  for i = head + 1, tail do steps[#steps + 1] = path[i] end
+  return { steps = steps, guyHeadStart = math.floor(head / 8) }
+end
+
+local function pewterGymEscort(game, ow)
+  if ow.runner:isRunning() or #ow.scriptMoves > 0 then return end
+  local x, y = ow.player.cellX, ow.player.cellY
+  local plan = pewterEscort.playerPlan(x, y)
+  local Music = require("src.core.Music")
+  local t = text(game)
+  local follow = t._PewterCityYoungsterYoureATrainerFollowMeText
+    or "You're a trainer\nright? BROCK's\nlooking for new\nchallengers!\nFollow me!"
+  -- PewterGuys only has entries for five tiles; an unmatched talk tile
+  -- (e.g. (36,16) east of him) just gets the follow-me line, same as a
+  -- failed coords lookup would refuse to arm the walk.
+  if not plan then
+    push(game, follow)
+    return
+  end
+  local guy = ow:npcByIndex(5) -- PEWTERCITY_YOUNGSTER
+  local guySteps = pewterEscort.guySteps
+  local head = plan.guyHeadStart
+
+  -- After the walk: face the player, restore map music, "Go take on
+  -- BROCK", then retrace RLEList_PewterGymGuy back to his spawn (35,16).
+  -- (pokered teleports him via MovementData_PewterGymGuyExit; we walk
+  -- the same route home instead.  Brock victory still HideObject's him.)
+  local function walkHome()
+    if not guy then return end
+    local ret = pewterEscort.guyReturnSteps
+    local i = 0
+    local function tick()
+      i = i + 1
+      if not ret[i] then
+        guy.facing = "down"
+        return
+      end
+      ow:scriptMove(guy, ret[i], 1, tick)
+    end
+    tick()
+  end
+
+  local function afterWalk()
+    if guy then guy.facing = "left" end
+    Music.playMap(game.data, "PEWTER_CITY")
+    push(game, t._PewterCityYoungsterGoTakeOnBrockText
+      or "Go take on BROCK\nat the GYM first!", walkHome)
+  end
+
+  local function lockstep()
+    local i = 0
+    local function tick()
+      i = i + 1
+      local ps = plan.steps[i]
+      if not ps then
+        afterWalk()
+        return
+      end
+      local gs = guySteps[head + i]
+      if guy and gs then ow:scriptMove(guy, gs, 1) end
+      ow:scriptMove(ow.player, ps, 1, tick)
+    end
+    tick()
+  end
+
+  local function beginWalk()
+    Music.play(game.data, "Music_MuseumGuy")
+    if guy and head > 0 then
+      local h = 0
+      local function headTick()
+        h = h + 1
+        if h > head then lockstep(); return end
+        ow:scriptMove(guy, guySteps[h], 1, headTick)
+      end
+      headTick()
+    else
+      lockstep()
+    end
+  end
+
+  push(game, follow, beginWalk)
+end
+
 M.PEWTER_CITY = {
+  escort = pewterEscort,
+  -- PewterCityYoungsterText: talking also arms the gym escort script
+  talk = {
+    TEXT_PEWTERCITY_YOUNGSTER = function(game, ow, npc, done)
+      pewterGymEscort(game, ow)
+      if done then done() end
+    end,
+  },
   onStep = function(game, ow, x, y)
     if game.save.flags.EVENT_BEAT_BROCK then return false end
+    if ow.runner:isRunning() or #ow.scriptMoves > 0 then return false end
     if not inCoords({ { 35, 17 }, { 36, 17 }, { 37, 18 }, { 37, 19 } }, x, y) then
       return false
     end
-    local t = text(game)
-    push(game, t._PewterCityYoungsterYoureATrainerFollowMeText
-      or "Hey! You're a\ntrainer, right?", function()
-      push(game, t._PewterCityYoungsterGoTakeOnBrockText
-        or "Go take on BROCK\nat the GYM first!", function()
-        ow:scriptMove(ow.player, "left", 1)
-      end)
-    end)
+    pewterGymEscort(game, ow)
     return true
   end,
 }
@@ -453,10 +613,22 @@ local function bikeGateGuard(coords, stopText, explainText)
   return function(game, ow, x, y)
     if game.save.inventory.BICYCLE then return false end
     if not inCoords(coords, x, y) then return false end
+    -- walk the player up to the tile beside the counter, no further:
+    -- (matchedY - closestY) tiles, 0 when already next to it
+    -- (Route16Gate1FDefaultScript's wCoordIndex-1). Forcing a fixed one
+    -- tile up from the counter-adjacent row shoved the player onto the
+    -- impassable desk and boxed them in.
+    local closestY = coords[1][2]
+    for _, c in ipairs(coords) do
+      if c[2] < closestY then closestY = c[2] end
+    end
+    local dist = y - closestY
     local t = text(game)
     push(game, t[stopText] or "Hey! Wait up!", function()
       push(game, t[explainText] or "You need a\nBICYCLE for\nCYCLING ROAD!", function()
-        ow:scriptMove(ow.player, "up", 1)
+        if dist > 0 then
+          ow:scriptMove(ow.player, "up", dist)
+        end
       end)
     end)
     return true

data/scripts/victories.lua

@@ -2,8 +2,9 @@
 -- "OPP_CLASS#partyIndex" (the object_event trainer args).  Hand-ported
 -- from the leaders'/bosses' text_asm victory scripts:
 --   gym badges: scripts/PewterGym.asm ... ViridianGym.asm
---   Rocket Hideout Giovanni: his Silph Scope is an item ball next to him
---   (data/maps/objects/RocketHideoutB4F.asm), so no reward entry needed.
+--   Rocket Hideout Giovanni: Silph Scope is a hidden item ball revealed by
+--   ShowObject in RocketHideoutB4FBeatGiovanniScript (ported as the
+--   TEXT_ROCKETHIDEOUTB4F_GIOVANNI talk handler in story3.lua).
 -- The TM each gym leader hands out afterwards is also ported.
 --
 -- `deactivate` lists the EVENT_BEAT_* flags each gym's victory script
@@ -21,9 +22,16 @@ local function range(prefix, first, last)
 end
 
 return {
+  -- PewterGym.asm .gymVictory also HideObject TOGGLE_GYM_GUY
+  -- (PEWTERCITY_YOUNGSTER) and TOGGLE_ROUTE_22_RIVAL_1 so the east-exit
+  -- escort NPC and the first Route 22 rival stay gone after the badge.
   ["OPP_BROCK#1"] = { badge = "BOULDERBADGE", flag = "EVENT_BEAT_BROCK",
                       item = "TM_BIDE",
-                      deactivate = { "EVENT_BEAT_PEWTER_GYM_TRAINER_0" } },
+                      deactivate = { "EVENT_BEAT_PEWTER_GYM_TRAINER_0" },
+                      hide = {
+                        { "PEWTER_CITY", "PEWTERCITY_YOUNGSTER" },
+                        { "ROUTE_22", "ROUTE22_RIVAL1" },
+                      } },
   ["OPP_MISTY#1"] = { badge = "CASCADEBADGE", flag = "EVENT_BEAT_MISTY",
                       item = "TM_BUBBLEBEAM",
                       deactivate = range("EVENT_BEAT_CERULEAN_GYM_TRAINER_", 0, 1) },

docs/known-differences.md

@@ -6,4 +6,37 @@ work for true parity. Faithfully-ported behavior is documented in
 docs/behavior-porting-notes.md; deliberate additions beyond the original
 are in docs/new-features.md.
 
-None currently.
+## Reimplemented unused Prof. Oak and Rocket Chief battles
+
+The original ROM defines trainer data for `PROF_OAK` and `CHIEF`
+(`data/trainers/parties.asm`) but never attaches either to an NPC, so
+both battles are unreachable in the real game. This project makes them
+fightable after the Hall of Fame:
+
+- Prof. Oak battles you in Pallet Town once `EVENT_BEAT_CHAMPION_RIVAL`
+  is set, using `ProfOakData`'s three starter-matched teams (the team is
+  picked by the type that counters your starter, mirroring the rival).
+- The Celadon Game Corner Chief battles you in his house post-game.
+  `ChiefData` is empty in the ROM, so `OPP_CHIEF` is given a
+  reconstructed party.
+
+This is an intentional divergence: neither battle can be triggered in the
+original game.
+
+## Reimplemented unused Silph Co. card-key doors
+
+`engine/events/card_key.asm` and the unused `CardKeyTable1/2/3` coordinate
+lists (`data/events/card_key_coords.asm`) describe locked doors for Silph
+Co. floors 2F-11F, but no retail `.blk` map layout ever places the closed
+door block at those coordinates, so the card key check is dead code in
+the original game. This project stamps the closed door block (`$54`/`$5f`
+on floors 2F-10F, `$20` on 11F) over each of the 20 door coordinates on
+map load, and swaps it for the open block once that door's
+`EVENT_SILPH_CO_n_UNLOCKED_DOORn` flag is set (using the key from a Team
+Rocket grunt, as in the original's unused design).
+
+This is an intentional divergence: the doors are not visible or
+functional in the original game. The door layout lives in
+`tools/rom_manifest.json` (`field.cardKeyDoors.closedDoors`), hand-ported
+since no retail ROM data encodes it; `src/import/RomExtractor.lua` copies
+it straight through on ROM import.

docs/modding.md

@@ -17,3 +17,33 @@ Regenerate the reference straight into a wiki checkout:
 ```sh
 luajit tools/gen_registry_docs.lua ../pokemon-gen1-recomp-project.wiki
 ```
+
+## Developer console
+
+Boot with developer mode on to unlock the in-game console and hot-reload
+hotkeys. Either set `POKEPORT_DEV=1` in the environment or pass
+`--developer` on the command line:
+
+```sh
+love . --developer
+```
+
+While developer mode is active:
+
+- `` ` `` (backtick) opens the console overlay — a Lua REPL with `game`,
+  `data` and `mods` in scope. Press `` ` `` again to close it.
+- `F5` hot-reloads mods and asset caches without restarting.
+
+The console understands these verbs (anything else is evaluated as Lua):
+
+- `warp MAP [x y]` — teleport to a map (default cell 5,5).
+- `give ID [n|level]` — add an item (count) or a Pokémon (level).
+- `flag NAME [on|off]` — read or set an event flag.
+- `party` — dump the current party.
+- `mods` — list loaded mods and their state.
+- `reload` — hot-reload mods (same as `F5`).
+- `trace PAT | trace off` — trace events/hooks matching a glob pattern.
+- `help` — list the verbs.
+
+Developer mode also arms the mod loader's dev tripwire, which flags mods
+that reach outside their permission set.

docs/new-features.md

@@ -42,8 +42,10 @@ Game Boy equivalent:
   rows above the player recede and rows below come toward the viewer. Only
   things that actually *stand* on the ground draw as upright billboards,
   unscaled and pixel-identical to flat mode: the player, NPCs, item balls,
-  and the screen-anchored FX attached to them (heal machine glow, emote
-  bubbles, the fishing rod, the FLY bird). An earlier revision tried
+  and the standing FX attached to them (emote bubbles, the fishing rod,
+  the FLY bird). The Poké Center heal-machine overlay stays on the ground
+  plane with the machine tiles (it is OAM glued to a BG graphic, not a
+  standing sprite). An earlier revision tried
   billboarding buildings/trees/signs too (cutting them out of the ground
   per hand-curated per-tileset tables); that chased an endless tail of
   special cases,  dense tree canopy, fences fused into grass, building
@@ -68,19 +70,31 @@ Game Boy equivalent:
 
 ## Colors mode
 
-The `2` key (and the Options menu COLORS row) cycles the global shade-remap
-display mode through **GBC → OG → OG INV → GBC INV → CLASSIC → GBC**:
+The `2` key (and the Options menu COLORS row) cycles the display mode
+through **OG RED → SGB → RED++ → OG → OG INV → SGB INV → CLASSIC → OG RED**.
+The first three are the real colorizations; the rest are DMG-shade novelties:
 
-- **GBC** (default): current SGB / GBC zone palettes.
+- **OG RED**: the Game Boy Color boot-ROM look for Pokemon Red -- one global
+  red BG palette + one green OBJ palette, every map, no per-map variation
+  (Pokemon Red has no CGB code, so on a GBC the boot ROM colors it globally).
+  The player/NPCs stay green over the red terrain via the OBP bake +
+  post-zone redraw (`PaletteFX.GBC_BG` / `GBC_OBJ`).
+- **SGB** (default): the per-map Super Game Boy region palettes
+  (`data/sgb/sgb_palettes.asm`). Sprites tint with the region palette, as on
+  real SGB. (This is the mode formerly mislabeled "GBC".)
+- **RED++**: pokered-gbc SuperPalettes -- real per-tile GBC coloring plus
+  per-species mon colors (`data/palettes_gbc.lua`).
 - **OG**: force the four DMG grays (colorization off).
 - **OG INV**: inverted DMG grays.
-- **GBC INV**: each SGB zone palette with shade order reversed.
+- **SGB INV**: each SGB zone palette with shade order reversed.
 - **CLASSIC**: original Game Boy pea-soup greens
   (`#9BBC0F` / `#8BAC0F` / `#306230` / `#0F380F`).
 
-The transform is applied centrally in `PaletteFX.sendColors`, so it covers
-overworld, menus, battles, and tilt upright billboards. Persisted as
-`save.options.colors`.
+The shade-remap transform is applied centrally in `PaletteFX.sendColors`, so
+it covers overworld, menus, battles, and tilt upright billboards. OG RED's
+global BG palette is supplied by `OverworldState:overworldBgColors` (per-map
+override in the overworld pass). Persisted as `save.options.colors`; the
+`gbc` / `gbc_inv` save ids are kept for back-compat under the new labels.
 
 ## GBC FX
 
@@ -132,7 +146,10 @@ migrated once into `options.lua` on load.
 - Music / SFX volume
 - Music Filter
 - OG GLITCHES on / off (Gen 1 quirks vs. modern-clean battle rules)
-- COLORS (GBC / RED++ / OG / OG INV / GBC INV / CLASSIC),  also hotkey `2`
-  (RED++ uses pokered-gbc SuperPalettes + per-species mon colors)
+- COLORS (OG RED / SGB / RED++ / OG / OG INV / SGB INV / CLASSIC),  also
+  hotkey `2` (OG RED = GBC boot-ROM look; RED++ uses pokered-gbc
+  SuperPalettes + per-species mon colors)
 - TILT (OFF / 15 / 35 / 50),  also hotkey `3` while free-roaming
-- GBC FX (OFF / 1 / 2 / 3 / 4),  also hotkey `5`
+- GBC FX (OFF / 1 / 2 / 3 / 4),  also hotkey `5`
+- MAX FPS (30 / 40 / 50 / 60 / 75 / 90 / 100 / 120 / 144 / 160, default 60),
+  a hard render frame-rate cap (`save.options.fpsCap`).

main.lua

@@ -26,7 +26,19 @@ local function scriptedIterations()
   return math.max(1, math.floor(require("src.core.GameSpeed").clamp(speedOverride)))
 end
 
-local function bootGame()
+local function bootGame(version)
+  -- The launcher hands us the chosen game (Red / Blue); scripted and headless
+  -- runs fall back to POKEPORT_VERSION, then Red.  Set the active version and
+  -- overlay its extracted cache BEFORE anything requires generated data, so
+  -- data/generated + assets/generated resolve to that version's files.
+  local GameVersion = require("src.core.GameVersion")
+  GameVersion.set(version or os.getenv("POKEPORT_VERSION") or "red")
+  require("src.import.CacheFs").mountVersion(GameVersion.get())
+  if love.window and love.window.setTitle then
+    local Version = require("src.core.Version")
+    love.window.setTitle(Version.title(
+      GameVersion.info().displayName .. " (Gen 1 Recompilation Project)"))
+  end
   Game = require("src.core.Game")
   Game:load()
   if os.getenv("POKEPORT_AUTOPILOT") then
@@ -48,6 +60,8 @@ function love.load(args)
   for i, a in ipairs(args or {}) do
     if a == "--editor" then
       editorMode = true
+    elseif a == "--developer" then
+      _G.POKEPORT_DEV_MODE = true
     elseif a == "--save" and args[i + 1] and args[i + 1] ~= "" then
       savePath = args[i + 1]
     elseif a == "--speed" and tonumber(args[i + 1]) then
@@ -66,20 +80,46 @@ function love.load(args)
   end
 
   local RomImporter = require("src.import.RomImporter")
-  if os.getenv("POKEPORT_FORCE_IMPORT") == "1" or not RomImporter.isReady() then
-    Importer = RomImporter.new(function()
-      if os.getenv("POKEPORT_IMPORT_ONLY") == "1" then
-        love.event.quit()
-        return
-      end
-      Importer = nil
-      bootGame()
-    end)
-    local importPath = os.getenv("POKEPORT_IMPORT_ROM")
-    if importPath then Importer:startPath(importPath) end
+  local forceImport = os.getenv("POKEPORT_FORCE_IMPORT") == "1"
+  local importPath = os.getenv("POKEPORT_IMPORT_ROM")
+  -- Scripted / headless runs pick their game from POKEPORT_VERSION (default
+  -- Red); the launcher's per-column choice does not apply to them.
+  local scriptedVersion = os.getenv("POKEPORT_VERSION") or "red"
+  local ready = RomImporter.isReady(scriptedVersion)
+  -- Scripted / headless runs have to reach the game with no human pressing
+  -- Play: an autopilot, a frame driver, an import-only build step, or an
+  -- explicit ROM path all bypass the interactive launcher and keep today's
+  -- import-then-boot (or boot-straight-in) behavior.
+  local scripted = os.getenv("POKEPORT_AUTOPILOT") or os.getenv("POKEPORT_DRIVER")
+    or os.getenv("POKEPORT_IMPORT_ONLY") == "1" or importPath ~= nil
+
+  if scripted then
+    if forceImport or not ready then
+      -- The importer detects the dropped/loaded ROM's version by SHA-1 and
+      -- passes it to onComplete; boot that version.
+      Importer = RomImporter.new(function(version)
+        if os.getenv("POKEPORT_IMPORT_ONLY") == "1" then
+          love.event.quit()
+          return
+        end
+        Importer = nil
+        bootGame(version or scriptedVersion)
+      end)
+      if importPath then Importer:startPath(importPath) end
+      return
+    end
+    bootGame(scriptedVersion)
     return
   end
-  bootGame()
+
+  -- Interactive: the launcher always runs.  Red and Blue are each live: a
+  -- column shows Play when that game's ROM is already imported, or Choose ROM
+  -- / drag-drop when it is not (Yellow is still a placeholder).  Any dropped
+  -- .gb is routed to Red or Blue by its SHA-1; pressing Play boots that game.
+  Importer = RomImporter.new(function(version)
+    Importer = nil
+    bootGame(version)
+  end, { launcher = true, forceImport = forceImport })
 end
 
 function love.update(dt)
@@ -171,6 +211,31 @@ function love.gamepadaxis(joystick, axis, value)
   Game:gamepadaxis(joystick, axis, value)
 end
 
+function love.joystickremoved(joystick)
+  if editorMode then return end
+  if Importer then return end
+  Game:joystickremoved(joystick)
+end
+
+-- f is true on focus gained, false on focus lost (e.g. alt-tab). A held
+-- direction's key-up can be delivered to the OS instead of the game while
+-- unfocused, so reset input on either transition rather than trust it.
+function love.focus(f)
+  if editorMode then return end
+  if Importer then
+    if Importer.focus then Importer:focus(f) end
+    return
+  end
+  Game:focus(f)
+end
+
+-- v is true when the window becomes visible again, false on minimize.
+function love.visible(v)
+  if editorMode then return end
+  if Importer then return end
+  Game:visible(v)
+end
+
 function love.touchpressed(id, x, y, dx, dy, pressure)
   if editorMode then return end
   if Importer then return Importer:mousepressed(x, y, 1) end
@@ -234,3 +299,78 @@ function love.filedropped(file)
   end
   if Importer then Importer:filedropped(file) end
 end
+
+local function pacingEnabled()
+  if os.getenv("POKEPORT_AUTOPILOT") then return false end
+  if os.getenv("POKEPORT_DRIVER") then return false end
+  if os.getenv("POKEPORT_IMPORT_ONLY") == "1" then return false end
+  return true
+end
+
+function love.run()
+  if love.load then love.load(love.arg.parseGameArguments(arg), arg) end
+
+  -- don't let love.load's cost land in the first frame's dt
+  if love.timer then love.timer.step() end
+
+  local FrameCap = require("src.core.FrameCap")
+  local paced = pacingEnabled()
+  -- The deadline the next present() should not beat.  Carried forward one
+  -- budget per frame so pacing stays even instead of drifting with the
+  -- per-frame sleep-granularity jitter.
+  local nextFrame = love.timer and love.timer.getTime() or 0
+  local dt = 0
+
+  return function()
+    -- process events
+    if love.event then
+      love.event.pump()
+      for name, a, b, c, d, e, f in love.event.poll() do
+        if name == "quit" then
+          if not love.quit or not love.quit() then
+            return a or 0
+          end
+        end
+        love.handlers[name](a, b, c, d, e, f)
+      end
+    end
+
+    -- update dt
+    if love.timer then dt = love.timer.step() end
+
+    -- call update and draw
+    if love.update then love.update(dt) end
+
+    if love.graphics and love.graphics.isActive() then
+      love.graphics.origin()
+      love.graphics.clear(love.graphics.getBackgroundColor())
+      if love.draw then love.draw() end
+      love.graphics.present()
+    end
+
+    if love.timer then
+      if paced then
+        -- Sleep out the remainder of the frame budget, measured from the
+        -- carried deadline, in small chunks so the OS timer stays
+        -- responsive.  vsync is untouched: when it already paces slower
+        -- than the cap the remainder is <= 0 and this rounds to a no-op.
+        local budget = 1 / FrameCap.current
+        nextFrame = nextFrame + budget
+        local now = love.timer.getTime()
+        -- A stall (alt-tab, a GC pause, a blocked import) can leave the
+        -- deadline more than a full budget in the past; re-anchor to now so
+        -- we pace the next frame rather than burst uncapped to catch up.
+        if now - nextFrame > budget then
+          nextFrame = now
+        end
+        while true do
+          local remaining = nextFrame - love.timer.getTime()
+          if remaining <= 0 then break end
+          love.timer.sleep(remaining < 0.001 and remaining or 0.001)
+        end
+      else
+        love.timer.sleep(0.001)
+      end
+    end
+  end
+end

mobile/ANDROID.md

@@ -27,17 +27,17 @@ refresh is safe,  just rebuild.
 ## Build
 
 ```bash
-# Debug APK (default Android debug keystore)
+# Build the APK
 scripts/build_android.sh
 
-# Release APK (signing is manual,  see below)
-scripts/build_android.sh --release
+# Build the APK, setting app.version_name/app.version_code to match a release
+scripts/build_android.sh --version 0.2.5
 
 # Zip game.love + branding only (no Android SDK required)
 scripts/build_android.sh --package-only
 ```
 
-Or via `scripts/build.sh android`.
+Or via `scripts/build.sh android [--version X.Y.Z]`.
 
 The embedded `game.love` deliberately excludes `data/generated/`,
 `assets/generated/`, and any ROM. It contains the first-boot Lua importer and
@@ -59,12 +59,10 @@ Set `ANDROID_SDK_ROOT` (or `ANDROID_HOME`), or let the script write
 `local.properties` when it finds `~/Library/Android/sdk`.
 
 Gradle flavor used: **`embedNoRecord`** (game fused into the APK, no microphone).
+Build task: `assembleEmbedNoRecordDebug`.
 
-- Debug task: `assembleEmbedNoRecordDebug`
-- Release task: `assembleEmbedNoRecordRelease`
-
-APKs land under `app/build/outputs/apk/embedNoRecord/{debug,release}/`.
-`scripts/build_android.sh` also copies the built APK(s) to `dist/android/{debug,release}/`.
+The APK lands under `app/build/outputs/apk/embedNoRecord/debug/`.
+`scripts/build_android.sh` also copies it to `dist/android/debug/`.
 
 ### Payload path
 
@@ -79,17 +77,15 @@ scripts, tests, and mobile build sources are excluded.
 | `app.application_id` | `com.theboisclub.pokemonred` |
 | `app.name` | Pokemon Red |
 | `app.orientation` | `portrait` |
+| `app.version_name` / `app.version_code` | set from `--version X.Y.Z` (code = major*10000 + minor*100 + patch); left as-is if `--version` is omitted |
 | Permissions | INTERNET / RECORD_AUDIO / WRITE_EXTERNAL_STORAGE stripped; VIBRATE + BLUETOOTH kept |
 
+## Releases
+
+`.github/workflows/release.yml` builds the APK with `--version` set to the
+release version and publishes it alongside the macOS/Windows/Linux builds as
+`PokemonRed-<version>-android.apk`.
+
 ## Signing
 
-- **Debug**: default Android debug keystore (no setup).
-- **Release**: out-of-band. Create a keystore yourself and wire it into
-  `app/build.gradle`,  **do not commit keystores or passwords**.
-
-Example (placeholder only):
-
-```bash
-keytool -genkey -v -keystore /path/to/pokemonred-release.jks \
-  -alias pokemonred -keyalg RSA -keysize 2048 -validity 10000
-```
+Signed with the default Android keystore (no setup required).

mobile/android/gradle.properties

@@ -6,7 +6,9 @@
 #app.name=LÖVE for Android
 
 app.application_id=com.theboisclub.pokemonred
-app.orientation=portrait
+# fullUser: allow every orientation the player's device permits (portrait and
+# landscape), honouring their auto-rotate lock. Was "portrait" (locked).
+app.orientation=fullUser
 app.version_code=32
 app.version_name=11.5a
 

mobile/android/love/src/jni/LuaJIT-2.1/.gitignore

@@ -1,4 +1,8 @@
 *.[oa]
+# Prebuilt vendored static libs Android.mk links against directly (not
+# built by the Gradle/NDK build itself) -- must stay tracked or a fresh
+# checkout fails ndk-build with "LOCAL_SRC_FILES points to a missing file".
+!android/*/libluajit.a
 *.so
 *.obj
 *.lib

mobile/android/love/src/jni/love/.gitignore

@@ -36,6 +36,7 @@ demos
 *~
 Makefile*
 config*
+!src/common/config.h
 libtool
 /platform/unix/ar-lib
 /platform/unix/compile

mobile/android/love/src/jni/love/src/common/android.cpp

@@ -183,6 +183,18 @@ void vibrate(double seconds)
 	env->DeleteLocalRef(activity);
 }
 
+bool showFilePicker()
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jclass activity = env->FindClass("org/love2d/android/GameActivity");
+
+	jmethodID method = env->GetStaticMethodID(activity, "showRomFilePicker", "()Z");
+	jboolean result = env->CallStaticBooleanMethod(activity, method);
+
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
 /*
  * Helper functions for the filesystem module
  */

mobile/android/love/src/jni/love/src/common/android.h

@@ -59,6 +59,14 @@ bool openURL(const std::string &url);
 
 void vibrate(double seconds);
 
+/**
+ * Shows the system's "pick a document" UI (Storage Access Framework).
+ * Returns true if the picker was launched; the picked file (if any) is
+ * copied asynchronously by GameActivity.onActivityResult into the app's
+ * external save directory, not returned here -- see src/import/RomImporter.lua.
+ **/
+bool showFilePicker();
+
 /*
  * Helper functions for the filesystem module
  */

mobile/android/love/src/jni/love/src/common/config.h

@@ -0,0 +1,178 @@
+/**
+ * Copyright (c) 2006-2023 LOVE Development Team
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ **/
+
+#ifndef LOVE_CONFIG_H
+#define LOVE_CONFIG_H
+
+// Platform stuff.
+#if defined(WIN32) || defined(_WIN32)
+#	define LOVE_WINDOWS 1
+	// If _USING_V110_SDK71_ is defined it means we are using the xp toolset.
+#	if defined(_MSC_VER) && (_MSC_VER >= 1700) && !_USING_V110_SDK71_
+#		include <winapifamily.h>
+#		if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#			define LOVE_WINDOWS_UWP 1
+#			define LOVE_NO_MODPLUG 1
+#			define LOVE_NOMPG123 1
+#		endif
+#	endif
+#endif
+#if defined(linux) || defined(__linux) || defined(__linux__)
+#	define LOVE_LINUX 1
+#endif
+#if defined(__ANDROID__)
+#	define LOVE_ANDROID 1
+#endif
+#if defined(__APPLE__)
+#	include <TargetConditionals.h>
+#	if TARGET_OS_IPHONE
+#		define LOVE_IOS 1
+#	elif TARGET_OS_MAC
+#		define LOVE_MACOSX 1
+#	endif
+#endif
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+// I know it's not linux, but it seems most "linux-only" code is bsd-compatible
+#	define LOVE_LINUX 1
+#endif
+
+// Endianness.
+#if defined(__ppc__) || defined(__ppc) || defined(__powerpc__) || defined(__powerpc)
+#	define LOVE_BIG_ENDIAN 1
+#else
+#	define LOVE_LITTLE_ENDIAN 1
+#endif
+
+// SSE instructions.
+#if defined(__SSE__)
+#	define LOVE_SIMD_SSE
+#elif defined(_MSC_VER)
+#	if defined(_M_AMD64) || defined(_M_X64)
+#		define LOVE_SIMD_SSE
+#	elif _M_IX86_FP
+#		define LOVE_SIMD_SSE
+#	endif
+#endif
+
+// NEON instructions.
+#if defined(__ARM_NEON)
+#	define LOVE_SIMD_NEON
+#endif
+
+// Warnings.
+#ifndef _CRT_SECURE_NO_WARNINGS
+#	define _CRT_SECURE_NO_WARNINGS
+#endif
+
+// Preferably, and ironically, this macro should go unused.
+#ifndef LOVE_UNUSED
+#	define LOVE_UNUSED(x) (void)sizeof(x)
+#endif
+
+
+// Warn on unused return values
+#ifdef __GNUC__
+#	define LOVE_WARN_UNUSED __attribute__((warn_unused_result))
+#elif _MSC_VER
+#	define LOVE_WARN_UNUSED _Check_return_
+#else
+#	define LOVE_WARN_UNUSED
+#endif
+
+#ifndef LOVE_BUILD
+#	define LOVE_BUILD
+#	define LOVE_BUILD_STANDALONE
+#	define LOVE_BUILD_EXE
+//#	define LOVE_BUILD_DLL
+#endif
+
+// DLL-stuff.
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#	define LOVE_EXPORT __declspec(dllexport)
+#elif defined(__GNUC__) || defined(__clang__)
+#	define LOVE_EXPORT __attribute__((visibility("default")))
+#else
+#	define LOVE_EXPORT
+#endif
+
+#if defined(LOVE_WINDOWS)
+#ifndef LOVE_WINDOWS_UWP
+#	define LOVE_LEGENDARY_CONSOLE_IO_HACK
+#endif // LOVE_WINDOWS_UWP
+#ifndef __MINGW32__
+#	define NOMINMAX
+#endif
+#endif
+
+#if defined(LOVE_MACOSX) || defined(LOVE_IOS)
+#	define LOVE_LEGENDARY_APP_ARGV_HACK
+#endif
+
+#if defined(LOVE_ANDROID) || defined(LOVE_IOS)
+#	define LOVE_LEGENDARY_ACCELEROMETER_AS_JOYSTICK_HACK
+#endif
+
+// Autotools config.h
+#ifdef HAVE_CONFIG_H
+#	include <../config.h>
+#	undef VERSION
+#	ifdef WORDS_BIGENDIAN
+#		undef LOVE_LITTLE_ENDIAN
+#		define LOVE_BIG_ENDIAN 1
+#	else
+#		undef LOVE_BIG_ENDIAN
+#		define LOVE_LITTLE_ENDIAN 1
+#	endif
+#else
+#	define LOVE_ENABLE_LOVE
+#	define LOVE_ENABLE_AUDIO
+#	define LOVE_ENABLE_DATA
+#	define LOVE_ENABLE_EVENT
+#	define LOVE_ENABLE_FILESYSTEM
+#	define LOVE_ENABLE_FONT
+#	define LOVE_ENABLE_GRAPHICS
+#	define LOVE_ENABLE_IMAGE
+#	define LOVE_ENABLE_JOYSTICK
+#	define LOVE_ENABLE_KEYBOARD
+#	define LOVE_ENABLE_MATH
+#	define LOVE_ENABLE_MOUSE
+#	define LOVE_ENABLE_PHYSICS
+#	define LOVE_ENABLE_SOUND
+#	define LOVE_ENABLE_SYSTEM
+#	define LOVE_ENABLE_THREAD
+#	define LOVE_ENABLE_TIMER
+#	define LOVE_ENABLE_TOUCH
+#	define LOVE_ENABLE_VIDEO
+#	define LOVE_ENABLE_WINDOW
+
+#	define LOVE_ENABLE_ENET
+#	define LOVE_ENABLE_LUASOCKET
+#	define LOVE_ENABLE_LUA53
+#endif
+
+// Check we have a sane configuration
+#if !defined(LOVE_WINDOWS) && !defined(LOVE_LINUX) && !defined(LOVE_IOS) && !defined(LOVE_MACOSX) && !defined(LOVE_ANDROID)
+#	error Could not detect target platform
+#endif
+#if !defined(LOVE_LITTLE_ENDIAN) && !defined(LOVE_BIG_ENDIAN)
+#	error Could not detect endianness
+#endif
+
+#endif // LOVE_CONFIG_H

mobile/android/love/src/jni/love/src/modules/filesystem/physfs/Filesystem.cpp

@@ -186,6 +186,18 @@ bool Filesystem::setIdentity(const char *ident, bool appendToPath)
 
 	save_path_full = storage_path + std::string("/save/") + save_identity;
 
+	// love::android::mkdir is a single mkdir(), not mkdir -p: on a genuinely
+	// first-ever launch (nothing has touched this app's external-files dir
+	// before) save_directory doesn't exist yet either, so creating
+	// save_path_full in one step fails with ENOENT and PHYSFS_mount below
+	// silently never mounts anything for the rest of this process -- not
+	// just the save dir, but everything routed through it (save.lua/
+	// options.lua, the ROM-derived asset cache, RomImporter's Android
+	// folder scan). Ensure each level exists in order instead.
+	if (!love::android::directoryExists(save_directory.c_str()) &&
+			!love::android::mkdir(save_directory.c_str()))
+		SDL_Log("Error: Could not create save directory %s!", save_directory.c_str());
+
 	if (!love::android::directoryExists(save_path_full.c_str()) &&
 			!love::android::mkdir(save_path_full.c_str()))
 		SDL_Log("Error: Could not create save directory %s!", save_path_full.c_str());
@@ -338,6 +350,26 @@ bool Filesystem::setupWriteDirectory()
 	std::string temp_writedir = getDriveRoot(save_path_full);
 	std::string temp_createdir = skipDriveRoot(save_path_full);
 
+#ifdef LOVE_ANDROID
+	// getUserDirectory() falls back to $HOME/getpwuid() (physfs_platform_posix.c),
+	// which is meaningless on Android and unrelated to save_path_full (an
+	// SDL_AndroidGet*StoragePath() subdirectory -- see setIdentity above), so
+	// the generic check below never matches and falls through to setting the
+	// write dir to the drive root ("/"), which no Android app can write to.
+	// Anchor to the real Android storage root instead.
+	std::string androidStorageRoot = isAndroidSaveExternal()
+		? SDL_AndroidGetExternalStoragePath() : SDL_AndroidGetInternalStoragePath();
+	if (save_path_full.find(androidStorageRoot) == 0)
+	{
+		temp_writedir = androidStorageRoot;
+		temp_createdir = save_path_full.substr(androidStorageRoot.length());
+
+		size_t startpos = temp_createdir.find_first_not_of('/');
+		if (startpos != std::string::npos)
+			temp_createdir = temp_createdir.substr(startpos);
+	}
+	else
+#endif
 	// On some sandboxed platforms, physfs will break when its write directory
 	// is the root of the drive and it tries to create a folder (even if the
 	// folder's path is in a writable location.) If the user's home folder is

mobile/android/love/src/jni/love/src/modules/system/System.cpp

@@ -180,6 +180,15 @@ void System::vibrate(double seconds) const
 #endif
 }
 
+bool System::pickFile() const
+{
+#ifdef LOVE_ANDROID
+	return love::android::showFilePicker();
+#else
+	return false;
+#endif
+}
+
 bool System::hasBackgroundMusic() const
 {
 #if defined(LOVE_ANDROID)

mobile/android/love/src/jni/love/src/modules/system/System.h

@@ -106,6 +106,15 @@ public:
 	 */
 	virtual void vibrate(double seconds) const;
 
+	/**
+	 * Shows the platform's native "pick a file" UI, if one is available.
+	 * Android only for now; the result (if any) is not returned here -- see
+	 * love::android::showFilePicker and src/import/RomImporter.lua.
+	 *
+	 * @return Whether the picker was shown.
+	 **/
+	virtual bool pickFile() const;
+
 	/**
 	 * Gets if the user is playing music on background.
 	 * Throws an exception on unsupported platforms.

mobile/android/love/src/jni/love/src/modules/system/wrap_System.cpp

@@ -95,6 +95,12 @@ int w_vibrate(lua_State *L)
 	return 0;
 }
 
+int w_pickFile(lua_State *L)
+{
+	luax_pushboolean(L, instance()->pickFile());
+	return 1;
+}
+
 int w_hasBackgroundMusic(lua_State *L)
 {
 	lua_pushboolean(L, instance()->hasBackgroundMusic());
@@ -110,6 +116,7 @@ static const luaL_Reg functions[] =
 	{ "getPowerInfo", w_getPowerInfo },
 	{ "openURL", w_openURL },
 	{ "vibrate", w_vibrate },
+	{ "pickFile", w_pickFile },
 	{ "hasBackgroundMusic", w_hasBackgroundMusic },
 	{ 0, 0 }
 };

mobile/android/love/src/main/java/org/love2d/android/GameActivity.java

@@ -61,6 +61,13 @@ public class GameActivity extends SDLActivity {
     protected final int[] recordAudioRequestDummy = new int[1];
     public static final int EXTERNAL_STORAGE_REQUEST_CODE = 2;
     public static final int RECORD_AUDIO_REQUEST_CODE = 3;
+    public static final int ROM_PICKER_REQUEST_CODE = 4;
+    // Mirrors conf.lua's t.identity ("pokemon-love2d"): where the picked ROM
+    // is dropped so RomImporter's existing folder scan finds it -- see
+    // src/import/RomImporter.lua and Filesystem::setIdentity (sets Android's
+    // save directory to getExternalFilesDir()/save/<identity>).
+    private static final String ROM_SAVE_IDENTITY = "pokemon-love2d";
+    private static final String PICKED_ROM_FILENAME = "picked_rom.gb";
     private static boolean immersiveActive = false;
     private static boolean needToCopyGameInArchive = false;
     private boolean storagePermissionUnnecessary = false;
@@ -332,6 +339,64 @@ public class GameActivity extends SDLActivity {
         return openURL(url) == 0;
     }
 
+    /**
+     * Shows the system document picker (Storage Access Framework) so the
+     * player can pick their ROM from anywhere (Downloads, Drive, etc.)
+     * without needing to know where the app's external files folder is.
+     * Requires API 19+ (ACTION_OPEN_DOCUMENT); the picked file (if any)
+     * arrives later in onActivityResult, not synchronously here.
+     */
+    @Keep
+    public static boolean showRomFilePicker() {
+        if (android.os.Build.VERSION.SDK_INT < 19) return false;
+        GameActivity self = (GameActivity) mSingleton;
+        if (self == null) return false;
+
+        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+        intent.setType("*/*");
+        try {
+            self.startActivityForResult(intent, ROM_PICKER_REQUEST_CODE);
+            return true;
+        } catch (Exception e) {
+            Log.d("GameActivity", "could not open ROM file picker: " + e.getMessage());
+            return false;
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode != ROM_PICKER_REQUEST_CODE) return;
+        if (resultCode != RESULT_OK || data == null || data.getData() == null) {
+            Log.d("GameActivity", "ROM picker returned no file (cancelled?)");
+            return;
+        }
+
+        Uri uri = data.getData();
+        File destDir = new File(new File(getExternalFilesDir(null), "save"), ROM_SAVE_IDENTITY);
+        if (!destDir.exists() && !destDir.mkdirs()) {
+            Log.d("GameActivity", "could not create " + destDir);
+            return;
+        }
+        File destFile = new File(destDir, PICKED_ROM_FILENAME);
+
+        InputStream source;
+        try {
+            source = getContentResolver().openInputStream(uri);
+        } catch (FileNotFoundException e) {
+            Log.d("GameActivity", "could not open picked ROM: " + e.getMessage());
+            return;
+        }
+        if (source == null) {
+            Log.d("GameActivity", "ContentResolver returned no stream for picked ROM");
+            return;
+        }
+        if (!copyAssetFile(source, destFile.getPath())) {
+            Log.d("GameActivity", "could not copy picked ROM to " + destFile);
+        }
+    }
+
     /**
      * Copies a given file from the assets folder to the destination.
      *

mobile/ios/overlays/love-ios.plist

@@ -62,10 +62,15 @@
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
 	<key>UISupportedInterfaceOrientations~ipad</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
 	<key>UTExportedTypeDeclarations</key>
 	<array>

scripts/build.sh

@@ -1,17 +1,19 @@
 #!/usr/bin/env bash
-# Packages the LÖVE2D Pokémon Red port into distributable macOS and
-# Windows builds. Runs entirely on macOS (no cross-compiling needed, 
-# the Windows build reuses LÖVE's prebuilt win64 binaries).
+# Packages the LÖVE2D Pokémon Red port into distributable macOS, Windows,
+# and Linux builds. Runs entirely on macOS (no cross-compiling needed,
+# the Windows and Linux builds reuse LÖVE's prebuilt win64 / AppImage
+# binaries, fusing our game.love onto them the same way love.exe does).
 #
-# Usage: scripts/build.sh [mac|win|android|ios|all] [--version X.Y.Z] [--identity "Developer ID Application: ..."]
+# Usage: scripts/build.sh [mac|win|linux|android|ios|all] [--version X.Y.Z] [--identity "Developer ID Application: ..."]
 #                          [--notary-profile NAME] [--no-notarize]
-#                          [--release]   # android/ios: release config instead of debug
+#                          [--release]   # ios only: release config instead of debug
 #
-# Output: dist/mac/PokemonRed-macos.zip
-#         dist/win/PokemonRed-win64.zip
-#         dist/android/{debug,release}/*.apk (full gradle output stays under
+# Output: dist/mac/gen1recomp-macos.zip
+#         dist/win/gen1recomp-win64.zip
+#         dist/linux/gen1recomp-linux.zip (fused x86_64 AppImage)
+#         dist/android/debug/*.apk (full gradle output stays under
 #           mobile/android/app/build/outputs/apk/embedNoRecord/)
-#         dist/ios/<Config>-<sdk>/PokemonRed.app (full xcodebuild output stays
+#         dist/ios/<Config>-<sdk>/gen1recomp.app (full xcodebuild output stays
 #           under mobile/ios/build/Build/Products/)
 
 set -euo pipefail
@@ -23,15 +25,15 @@ WORK="$HERE/work"
 DIST="$ROOT/dist"
 ENTITLEMENTS="$ROOT/scripts/macos-entitlements.plist"
 
-APP_NAME="PokemonRed"
+APP_NAME="gen1recomp"
 BUNDLE_ID="com.theboisclub.pokemonred"
 LOVE_VERSION="11.5"
 VERSION="$(git -C "$ROOT" rev-parse --short HEAD 2>/dev/null || echo dev)"
+VERSION_EXPLICIT=false
 IDENTITY=""
 TARGET="all"
 NOTARY_PROFILE="notary-profile"
 NOTARIZE=true
-ANDROID_RELEASE=false
 IOS_RELEASE=false
 
 say()  { printf '\033[1;32m==>\033[0m %s\n' "$*"; }
@@ -40,25 +42,25 @@ fail() { printf '\033[1;31merror:\033[0m %s\n' "$*" >&2; exit 1; }
 
 while [ $# -gt 0 ]; do
   case "$1" in
-    mac|win|android|ios|all) TARGET="$1" ;;
-    --version) VERSION="$2"; shift ;;
+    mac|win|linux|android|ios|all) TARGET="$1" ;;
+    --version) VERSION="$2"; VERSION_EXPLICIT=true; shift ;;
     --identity) IDENTITY="$2"; shift ;;
     --notary-profile) NOTARY_PROFILE="$2"; shift ;;
     --no-notarize) NOTARIZE=false ;;
-    --release) ANDROID_RELEASE=true; IOS_RELEASE=true ;;
+    --release) IOS_RELEASE=true ;;
     *) fail "unknown argument: $1" ;;
   esac
   shift
 done
 
-mkdir -p "$CACHE" "$WORK" "$DIST/mac" "$DIST/win"
+mkdir -p "$CACHE" "$WORK" "$DIST/mac" "$DIST/win" "$DIST/linux"
 
 # --------------------------------------------------------------- game.love
 say "packing game.love"
 LOVE_FILE="$WORK/game.love"
 rm -f "$LOVE_FILE"
 (cd "$ROOT" && zip -q -9 -r "$LOVE_FILE" \
-  main.lua conf.lua src data assets tools/rom_manifest.json \
+  main.lua conf.lua src data assets tools/rom_manifest.json tools/rom_manifest_blue.json \
   -x '*.DS_Store' 'data/generated/*' 'assets/generated/*')
 if unzip -Z1 "$LOVE_FILE" \
     | grep -Eq '^(data|assets)/generated/[^/]+|^(data|assets)/generated/.+/'; then
@@ -139,11 +141,20 @@ build_win() {
   say "building Windows (win64) app"
   local zip_name="love-$LOVE_VERSION-win64.zip"
   local love_zip="$CACHE/$zip_name"
+  # A cache hit only checks existence, not validity -- a prior run truncated
+  # by a network drop mid-download (curl still leaves the partial file if
+  # the exit code slips through) would otherwise be reused forever.
+  if [ -f "$love_zip" ] && ! unzip -tqq "$love_zip" >/dev/null 2>&1; then
+    warn "cached $zip_name is not a valid zip,  removing and re-downloading"
+    rm -f "$love_zip"
+  fi
   if [ ! -f "$love_zip" ]; then
     say "downloading LÖVE $LOVE_VERSION win64 binaries"
     curl -fL --progress-bar \
       "https://github.com/love2d/love/releases/download/$LOVE_VERSION/$zip_name" \
       -o "$love_zip" || fail "download failed,  check LOVE_VERSION or your network"
+    unzip -tqq "$love_zip" >/dev/null 2>&1 \
+      || fail "downloaded $zip_name is not a valid zip (truncated download?)"
   fi
 
   local extract_dir="$WORK/love-win64"
@@ -167,12 +178,82 @@ build_win() {
   say "Windows build: $zip_out"
 }
 
+# --------------------------------------------------------------- Linux
+build_linux() {
+  say "building Linux (x86_64 AppImage) app"
+  local appimage_name="love-$LOVE_VERSION-x86_64.AppImage"
+  local love_appimage="$CACHE/$appimage_name"
+  # Same cache-validity gap as the win64 zip above: an AppImage is just an
+  # ELF, so check the magic bytes before trusting a cached copy is complete.
+  if [ -f "$love_appimage" ] && [ "$(head -c 4 "$love_appimage" | od -An -tx1 | tr -d ' \n')" != "7f454c46" ]; then
+    warn "cached $appimage_name is not a valid ELF binary,  removing and re-downloading"
+    rm -f "$love_appimage"
+  fi
+  if [ ! -f "$love_appimage" ]; then
+    say "downloading LÖVE $LOVE_VERSION Linux AppImage"
+    curl -fL --progress-bar \
+      "https://github.com/love2d/love/releases/download/$LOVE_VERSION/$appimage_name" \
+      -o "$love_appimage" || fail "download failed,  check LOVE_VERSION or your network"
+    [ "$(head -c 4 "$love_appimage" | od -An -tx1 | tr -d ' \n')" = "7f454c46" ] \
+      || fail "downloaded $appimage_name is not a valid ELF binary (truncated download?)"
+  fi
+  chmod +x "$love_appimage"
+
+  # The Windows-style `cat love.exe game.love` fusion does NOT work here:
+  # an AppImage is a small runtime ELF with a squashfs appended, and at
+  # launch the runtime mounts the squashfs and executes bin/love from
+  # *inside* it -- bytes appended to the outer file are never read, so
+  # users would just get vanilla LÖVE's no-game screen. Instead, unpack
+  # the squashfs, drop game.love in, point AppRun's FUSE_PATH hook at it
+  # (the hook ships commented-out in LÖVE's official AppImage), and glue
+  # runtime + repacked squashfs back together.
+  command -v unsquashfs >/dev/null && command -v mksquashfs >/dev/null \
+    || fail "squashfs tools not found; install with: brew install squashfs"
+
+  # The squashfs starts right where the ELF ends:
+  # e_shoff + e_shnum * e_shentsize (all little-endian in the ELF64 header).
+  local e_shoff e_shentsize e_shnum sfs_offset
+  e_shoff=$(od -An -j40 -N8 -tu8 "$love_appimage" | tr -d ' ')
+  e_shentsize=$(od -An -j58 -N2 -tu2 "$love_appimage" | tr -d ' ')
+  e_shnum=$(od -An -j60 -N2 -tu2 "$love_appimage" | tr -d ' ')
+  sfs_offset=$((e_shoff + e_shentsize * e_shnum))
+  [ "$(dd if="$love_appimage" bs=1 skip="$sfs_offset" count=4 2>/dev/null)" = "hsqs" ] \
+    || fail "no squashfs superblock at computed offset $sfs_offset (unexpected AppImage layout)"
+
+  local appdir="$WORK/linux-appdir"
+  rm -rf "$appdir"
+  unsquashfs -q -no-xattrs -o "$sfs_offset" -d "$appdir" "$love_appimage" >/dev/null
+
+  cp "$LOVE_FILE" "$appdir/game.love"
+  sed -i '' 's|^#FUSE_PATH="$APPDIR/my_game.love"$|FUSE_PATH="$APPDIR/game.love"|' "$appdir/AppRun"
+  grep -q '^FUSE_PATH="\$APPDIR/game.love"$' "$appdir/AppRun" \
+    || fail "failed to enable FUSE_PATH in AppRun (upstream AppRun changed?)"
+
+  # Match the upstream image's compression (gzip, 128K blocks) so the
+  # bundled runtime can read it.
+  local sfs_out="$WORK/game.squashfs"
+  rm -f "$sfs_out"
+  mksquashfs "$appdir" "$sfs_out" \
+    -comp gzip -b 131072 -noappend -all-root -no-xattrs -quiet >/dev/null
+
+  local out_bin="$WORK/$APP_NAME-x86_64.AppImage"
+  rm -f "$out_bin"
+  head -c "$sfs_offset" "$love_appimage" > "$out_bin"
+  cat "$sfs_out" >> "$out_bin"
+  chmod +x "$out_bin"
+
+  local zip_out="$DIST/linux/$APP_NAME-linux.zip"
+  rm -f "$zip_out"
+  (cd "$WORK" && zip -q -9 -j "$zip_out" "$(basename "$out_bin")")
+  say "Linux build: $zip_out"
+}
+
 # --------------------------------------------------------------- Android
 build_android() {
   say "building Android (delegating to scripts/build_android.sh)"
   local args=()
-  if [ "$ANDROID_RELEASE" = true ]; then
-    args+=(--release)
+  if [ "$VERSION_EXPLICIT" = true ]; then
+    args+=(--version "$VERSION")
   fi
   "$ROOT/scripts/build_android.sh" ${args[@]+"${args[@]}"}
 }
@@ -190,9 +271,10 @@ build_ios() {
 case "$TARGET" in
   mac) build_mac ;;
   win) build_win ;;
+  linux) build_linux ;;
   android) build_android ;;
   ios) build_ios ;;
-  all) build_mac; build_win ;;
+  all) build_mac; build_win; build_linux ;;
 esac
 
 case "$TARGET" in

scripts/build_android.sh

@@ -1,11 +1,10 @@
 #!/usr/bin/env bash
 # Packages the LÖVE2D Pokémon Red port into an Android APK via love-android 11.5a.
 #
-# Usage: scripts/build_android.sh [--release] [--package-only]
+# Usage: scripts/build_android.sh [--version X.Y.Z] [--package-only]
 #
-#   (default)       assembleEmbedNoRecordDebug  (debug keystore)
-#   --release       assembleEmbedNoRecordRelease (requires out-of-band signing)
-#   --package-only  zip game.love + apply branding; skip gradle
+#   --version X.Y.Z  set app.version_name / app.version_code (else left as-is)
+#   --package-only   zip game.love + apply branding; skip gradle
 #
 # Prerequisites:
 #   - mobile/android vendored love-android tree at tag 11.5a (in-repo; see mobile/ANDROID.md)
@@ -13,9 +12,8 @@
 #   - JDK 17
 #
 # Output (after gradle):
-#   dist/android/{debug,release}/*.apk (convenience copy)
+#   dist/android/debug/*.apk (convenience copy)
 #   mobile/android/app/build/outputs/apk/embedNoRecord/debug/*.apk
-#   mobile/android/app/build/outputs/apk/embedNoRecord/release/*.apk
 
 set -euo pipefail
 
@@ -24,12 +22,12 @@ ANDROID_DIR="$ROOT/mobile/android"
 EMBED_ASSETS="$ANDROID_DIR/app/src/embed/assets"
 LOVE_FILE="$EMBED_ASSETS/game.love"
 DIST="$ROOT/dist/android"
-APP_NAME="Pokemon Red"
+APP_NAME="gen1recomp"
 APPLICATION_ID="com.theboisclub.pokemonred"
 LOVE_ANDROID_VERSION="11.5a"
 NDK_VERSION="25.2.9519653"
 
-RELEASE=false
+VERSION=""
 PACKAGE_ONLY=false
 
 say()  { printf '\033[1;32m==>\033[0m %s\n' "$*"; }
@@ -38,17 +36,29 @@ fail() { printf '\033[1;31merror:\033[0m %s\n' "$*" >&2; exit 1; }
 
 while [ $# -gt 0 ]; do
   case "$1" in
-    --release) RELEASE=true ;;
+    --version) VERSION="$2"; shift ;;
     --package-only) PACKAGE_ONLY=true ;;
     -h|--help)
       sed -n '2,20p' "$0"
       exit 0
       ;;
-    *) fail "unknown argument: $1 (try --release or --package-only)" ;;
+    *) fail "unknown argument: $1 (try --version X.Y.Z or --package-only)" ;;
   esac
   shift
 done
 
+VERSION_CODE=""
+if [ -n "$VERSION" ]; then
+  if ! printf '%s' "$VERSION" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$'; then
+    fail "invalid --version '$VERSION' (expected X.Y.Z)"
+  fi
+  major="${VERSION%%.*}"
+  rest="${VERSION#*.}"
+  minor="${rest%%.*}"
+  patch="${rest##*.}"
+  VERSION_CODE=$((major * 10000 + minor * 100 + patch))
+fi
+
 # --------------------------------------------------------------- preconditions
 if [ ! -f "$ANDROID_DIR/settings.gradle" ] || [ ! -f "$ANDROID_DIR/gradlew" ]; then
   fail "love-android not found at mobile/android/.
@@ -74,10 +84,10 @@ apply_android_branding() {
 
   say "applying Android branding (gradle.properties + permission trim)"
 
-  python3 - "$props" "$APPLICATION_ID" "$APP_NAME" <<'PY'
+  python3 - "$props" "$APPLICATION_ID" "$APP_NAME" "$VERSION" "$VERSION_CODE" <<'PY'
 import pathlib, re, sys
 path = pathlib.Path(sys.argv[1])
-app_id, name = sys.argv[2], sys.argv[3]
+app_id, name, version, version_code = sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5]
 text = path.read_text()
 
 def set_prop(text, key, value):
@@ -91,7 +101,10 @@ def set_prop(text, key, value):
 text = re.sub(r"(?m)^app\.name_byte_array=.*\n?", "", text)
 text = set_prop(text, "app.name", name)
 text = set_prop(text, "app.application_id", app_id)
-text = set_prop(text, "app.orientation", "portrait")
+text = set_prop(text, "app.orientation", "fullUser")
+if version:
+    text = set_prop(text, "app.version_name", version)
+    text = set_prop(text, "app.version_code", version_code)
 path.write_text(text)
 PY
 
@@ -124,7 +137,7 @@ pack_game_love() {
   mkdir -p "$EMBED_ASSETS"
   rm -f "$LOVE_FILE"
   (cd "$ROOT" && zip -q -9 -r "$LOVE_FILE" \
-    main.lua conf.lua src data assets tools/rom_manifest.json \
+    main.lua conf.lua src data assets tools/rom_manifest.json tools/rom_manifest_blue.json \
     -x '*.DS_Store' -x '*/.git/*' -x '*/.DS_Store' \
     -x 'data/generated/*' -x 'assets/generated/*')
   if unzip -Z1 "$LOVE_FILE" \
@@ -178,16 +191,8 @@ require_android_sdk() {
 
 # --------------------------------------------------------------- gradle
 run_gradle() {
-  local task
-  if $RELEASE; then
-    task="assembleEmbedNoRecordRelease"
-    say "building release APK ($task)"
-    warn "release signing is out-of-band,  see mobile/ANDROID.md (Signing)."
-    warn "without a signingConfig, assembleRelease may produce an unsigned APK or fail."
-  else
-    task="assembleEmbedNoRecordDebug"
-    say "building debug APK ($task),  uses the default Android debug keystore"
-  fi
+  local task="assembleEmbedNoRecordDebug"
+  say "building APK ($task)"
 
   if ! (
     cd "$ANDROID_DIR"
@@ -199,19 +204,12 @@ run_gradle() {
   You can still iterate on the .love payload with: scripts/build_android.sh --package-only"
   fi
 
-  local out_dir
-  if $RELEASE; then
-    out_dir="$ANDROID_DIR/app/build/outputs/apk/embedNoRecord/release"
-  else
-    out_dir="$ANDROID_DIR/app/build/outputs/apk/embedNoRecord/debug"
-  fi
+  local out_dir="$ANDROID_DIR/app/build/outputs/apk/embedNoRecord/debug"
   if [ -d "$out_dir" ]; then
     say "APK output:"
     find "$out_dir" -name '*.apk' -exec ls -lh {} \;
 
-    local flavor="debug"
-    $RELEASE && flavor="release"
-    local dist_dir="$DIST/$flavor"
+    local dist_dir="$DIST/debug"
     rm -rf "$dist_dir"
     mkdir -p "$dist_dir"
     find "$out_dir" -name '*.apk' -exec cp {} "$dist_dir/" \;

scripts/build_ios.sh

@@ -15,8 +15,8 @@
 #   - mobile/ios/love-src/ (see --fetch / mobile/ios/README.md)
 #   - prebuilt iOS libraries under love-src/platform/xcode/ios/libraries/
 #
-# Output: dist/ios/<Config>-<sdk>/PokemonRed.app (convenience copy)
-#         mobile/ios/build/Build/Products/<Config>-<sdk>/PokemonRed.app
+# Output: dist/ios/<Config>-<sdk>/gen1recomp.app (convenience copy)
+#         mobile/ios/build/Build/Products/<Config>-<sdk>/gen1recomp.app
 
 set -euo pipefail
 
@@ -33,8 +33,8 @@ RESOURCES_DIR="$XCODE_DIR/ios/resources"
 LOVE_FILE="$RESOURCES_DIR/game.love"
 LIBS_DIR="$XCODE_DIR/ios/libraries"
 
-APP_NAME="PokemonRed"
-DISPLAY_NAME="Pokemon Red"
+APP_NAME="gen1recomp"
+DISPLAY_NAME="gen1recomp"
 BUNDLE_ID="com.theboisclub.pokemonred"
 LOVE_VERSION="$(tr -d '[:space:]' < "$IOS_DIR/LOVE_VERSION" 2>/dev/null || echo 11.5)"
 IOS_SOURCE_ZIP="love-${LOVE_VERSION}-ios-source.zip"
@@ -155,7 +155,7 @@ require_ios_libraries
 apply_ios_branding() {
   [ -f "$OVERLAY_PLIST" ] || fail "missing overlay plist: $OVERLAY_PLIST"
   local dest="$XCODE_DIR/ios/love-ios.plist"
-  say "applying iOS branding (portrait-only Info.plist, display name)"
+  say "applying iOS branding (portrait + landscape Info.plist, display name)"
   cp "$OVERLAY_PLIST" "$dest"
 }
 
@@ -166,7 +166,7 @@ pack_game_love() {
   rm -f "$LOVE_FILE"
   # Same payload as scripts/build.sh / build_android.sh: game sources only.
   (cd "$ROOT" && zip -q -9 -r "$LOVE_FILE" \
-    main.lua conf.lua src data assets tools/rom_manifest.json \
+    main.lua conf.lua src data assets tools/rom_manifest.json tools/rom_manifest_blue.json \
     -x '*.DS_Store' -x '*/.git/*' -x '*/.DS_Store' \
     -x 'data/generated/*' -x 'assets/generated/*')
   if unzip -Z1 "$LOVE_FILE" \

src/battle/AnimPlayer.lua

@@ -144,6 +144,25 @@ function AnimPlayer.new(data)
   }, AnimPlayer)
 end
 
+-- Release the tilesheet images and quads this player built.  They live in
+-- per-instance caches (a fresh AnimPlayer is made per battle), so unlike a
+-- shared module cache they are dead the moment the battle ends -- freeing
+-- them here instead of waiting on a GC finalizer keeps grinding battles
+-- from piling orphaned VRAM up faster than the (Lua-heap-triggered) GC
+-- reclaims it.
+function AnimPlayer:release()
+  for _, img in pairs(self.images) do
+    if img and img.release then pcall(img.release, img) end
+  end
+  self.images = {}
+  for _, byTile in pairs(self.quads) do
+    for _, q in pairs(byTile) do
+      if q and q.release then pcall(q.release, q) end
+    end
+  end
+  self.quads = {}
+end
+
 function AnimPlayer:warnOnce(key, fmt, ...)
   if not self.warned[key] then
     self.warned[key] = true

src/battle/BattleState.lua

@@ -52,6 +52,10 @@ local imageCache = {}
 -- fully transparent rows below a pic's content (the extracted 32x32 back
 -- pics carry baked-in padding); used to sit the pic flush on the text box
 local imagePadBottom = {}
+-- fully transparent columns left of a pic's content; at 2x (back pics)
+-- this is subtracted from hlcoord 1,5 so opaque pixels match hardware,
+-- where those columns were white-on-white rather than shifted content
+local imagePadLeft = {}
 -- image -> { path, pal } so palette-fade variants (see fadeImage) can be
 -- rebuilt for any battle pic, whatever code loaded it
 local imageMeta = {}
@@ -63,7 +67,7 @@ local function getImage(path, pal, trueColor)
   if trueColor then pal = nil end
   local key = pal and (path .. "#" .. pal.name) or path
   if not imageCache[key] then
-    local img, pad = nil, 0
+    local img, pad, padL = nil, 0, 0
     if love.image and love.image.newImageData then
       local id = Assets.imageData(path)
       if pal then
@@ -86,13 +90,25 @@ local function getImage(path, pal, trueColor)
         if opaque then break end
         bottom = bottom - 1
       end
+      local left = 0
+      while left < w do
+        local opaque = false
+        for y = 0, h - 1 do
+          local _, _, _, a = id:getPixel(left, y)
+          if a > 0 then opaque = true break end
+        end
+        if opaque then break end
+        left = left + 1
+      end
       img = love.graphics.newImage(id)
       pad = h - 1 - bottom
+      padL = left
     else
       img = Assets.image(path) -- headless stub: no pixel access
     end
     imageCache[key] = img
     imagePadBottom[img] = pad
+    imagePadLeft[img] = padL
     imageMeta[img] = { path = path, pal = pal, trueColor = trueColor or nil }
   end
   return imageCache[key]
@@ -101,7 +117,7 @@ end
 -- hot reload: the next getImage re-resolves every pic through the asset
 -- search path and re-measures its ground padding
 function BattleState.invalidate()
-  imageCache, imagePadBottom, imageMeta = {}, {}, {}
+  imageCache, imagePadBottom, imagePadLeft, imageMeta = {}, {}, {}, {}
 end
 
 Assets.register(BattleState.invalidate)
@@ -258,6 +274,10 @@ local function makeBattler(data, mon, isPlayer, save)
   }
 end
 
+-- LinkBattle builds clamped copies with save=nil (no badge boosts); wild
+-- and trainer constructors pass the live save for the player side.
+BattleState.makeBattler = makeBattler
+
 -- The battle pic for `species` on the given side (back pic for the
 -- player side, front pic for the enemy side), tinted PAL_GRAYMON --
 -- the same path makeBattler uses, but forced gray -- since this is only
@@ -635,7 +655,6 @@ function BattleState:startMessage(item)
     self.total = self.total + #codes
   end
   self.charIndex = 0
-  self.holdTimer = nil
 end
 
 function BattleState:updateQueue()
@@ -786,9 +805,8 @@ function BattleState:updateQueue()
   if self.charIndex < self.total then
     self.charIndex = math.min(self.total, self.charIndex + 2)
   else
-    self.holdTimer = (self.holdTimer or 40) - 1
     local input = self.game.input
-    if self.holdTimer <= 0 or input:wasPressed("a") or input:wasPressed("b") then
+    if input:wasPressed("a") or input:wasPressed("b") then
       self.current = nil
     end
   end
@@ -834,7 +852,7 @@ function BattleState:computeMusicKind()
     return "final"
   elseif isBoss or (self.trainer and self.trainer.id == "OPP_LANCE") then
     return "gym"
-  elseif self.kind == "trainer" then
+  elseif self.kind == "trainer" or self.kind == "link" then
     return "trainer"
   end
   return "wild"
@@ -896,6 +914,17 @@ function BattleState:enter()
       self.showEnemyTrainer = false
       self:startGrowIn(self.enemy)
     end)
+  elseif self.kind == "link" then
+    -- Colosseum has no foe trainer pic, but the enemy mon still grows
+    -- out of the ball after "X sent out Y!" (not the wild "already there"
+    -- intro that LinkBattle previously inherited from newWild).
+    self.enemySendingOut = true
+    self:say(("%s sent\nout %s!"):format(self.opponentName or "FOE",
+                                          self.enemy.name))
+    self:act(function()
+      self.enemySendingOut = false
+      self:startGrowIn(self.enemy)
+    end)
   end
   if not self.ghost then
     -- the enemy's cry plays as it appears (data/pokemon/cries.asm)
@@ -936,22 +965,53 @@ end
 -- (end_of_battle.asm clears wLowHealthAlarm when a battle ends)
 function BattleState:exit()
   require("src.core.Sound").stopLoop("Low_Health_Alarm")
+  -- Free this battle's own GPU objects now rather than waiting on a GC
+  -- finalizer: the two full-screen wavy-effect canvases (colorMode) and
+  -- the AnimPlayer's per-instance tilesheet images/quads.  The shared
+  -- module caches (imageCache/imagePadBottom, keyed by path+palette) are
+  -- reused by the next battle, so they are deliberately left alone -- only
+  -- the per-instance objects, which are dead once this battle is popped,
+  -- are released here.
+  local function rel(o) if o and o.release then pcall(o.release, o) end end
+  rel(self.bgCanvas); self.bgCanvas = nil
+  rel(self.waveCanvas); self.waveCanvas = nil
+  self.colorFxReady = nil
+  if self.animPlayer and self.animPlayer.release then
+    self.animPlayer:release()
+  end
 end
 
--- An action the battler is locked into (bypasses the menu), or nil.
-function BattleState:lockedAction(battler)
+-- End a trapping sequence (USING_TRAPPING_MOVE).  SendOutMon clears the
+-- foe's bit (core.asm:1761-1762); EnemySendOutFirstMon clears the
+-- player's (core.asm:1314-1315).  Any switch frees the other side.
+local function clearTrapping(battler)
+  if not battler then return end
+  battler.trappingTurns = nil
+  battler.trapMove = nil
+  battler.trapDamage = nil
+end
+
+-- Actions that skip DisplayBattleMenu entirely (core.asm:300-310):
+-- recharge, Rage, thrash, charge.  Bide / trapping / being held do NOT
+-- skip the menu -- the player can still item/switch (and must press
+-- FIGHT to continue a trapping sequence).
+function BattleState:menuLockedAction(battler)
   if battler.mustRecharge then return { special = "recharge" } end
   if battler.charging then return battler.charging end
   if battler.thrashTurns and battler.thrashTurns > 0 then return battler.thrashMove end
+  if battler.rageMove then return battler.rageMove end
+  return nil
+end
+
+-- After FIGHT: skip MoveSelectionMenu (core.asm:320-329).  Own
+-- trapping/Bide continues; foe trapping forces CANNOT_MOVE ($ff).
+function BattleState:fightLockedAction(battler)
   if battler.trappingTurns and battler.trappingTurns > 0 then
     return { special = "trapping" }
   end
   if battler.bideTurns then return { special = "bide" } end
-  if battler.rageMove then return battler.rageMove end
-  -- held in place while the OPPONENT's trapping move is running
-  -- (core.asm:316-322 reads the live USING_TRAPPING_MOVE bit, so a
-  -- trap ended early by paralysis/faint frees the victim immediately);
-  -- boundTurns is a mirror kept for Status.beforeMove's held check
+  -- held while the OPPONENT's trapping bit is set (live mirror so a
+  -- trap ended early by paralysis/faint frees the victim immediately)
   local opp = battler.isPlayer and self.enemy or self.player
   battler.boundTurns = opp and opp.trappingTurns
                        and math.max(1, opp.trappingTurns) or nil
@@ -961,6 +1021,11 @@ function BattleState:lockedAction(battler)
   return nil
 end
 
+-- Full lock for AI / callers that need any forced action.
+function BattleState:lockedAction(battler)
+  return self:menuLockedAction(battler) or self:fightLockedAction(battler)
+end
+
 function BattleState:playerHasPP()
   for i, mv in ipairs(self.player.curMoves) do
     if mv.pp > 0 and self.player.disabledSlot ~= i then return true end
@@ -968,6 +1033,25 @@ function BattleState:playerHasPP()
   return false
 end
 
+function BattleState:swapMoves(i, j)
+  if i == j then return end
+  local moves = self.player.curMoves
+  local a, b = moves[i], moves[j]
+  if not (a and b) then return end
+  moves[i], moves[j] = b, a
+  local stored = self.player.mon and self.player.mon.moves
+  if stored and stored ~= moves and stored[i] and stored[j] then
+    stored[i], stored[j] = stored[j], stored[i]
+  end
+  local disabled = self.player.disabledSlot
+  if disabled == i then
+    self.player.disabledSlot = j
+  elseif disabled == j then
+    self.player.disabledSlot = i
+  end
+  require("src.core.Sound").play(self.data, "Swap")
+end
+
 function BattleState:update(dt)
   self.frame = self.frame + 1
   self:updateFx()
@@ -1048,8 +1132,9 @@ function BattleState:update(dt)
     if not (self.player.mustRecharge or self.player.rageMove) then
       self.player.flinched, self.enemy.flinched = false, false
     end
-    -- locked multi-turn actions skip the menu entirely
-    local locked = self:lockedAction(self.player)
+    -- only recharge/Rage/thrash/charge skip DisplayBattleMenu; trapping
+    -- victims (and wrappers) still get FIGHT/PKMN/ITEM/RUN (core.asm:312)
+    local locked = self:menuLockedAction(self.player)
     if locked then
       self:resolveTurn(locked)
       return
@@ -1073,6 +1158,13 @@ function BattleState:update(dt)
         end)
         self:act(function() self:endOfTurn() end)
       elseif choice == "fight" then
+        -- After the menu: own trapping/Bide or foe Wrap skips the move
+        -- list and forces the locked action (core.asm:320-329)
+        local fightLock = self:fightLockedAction(self.player)
+        if fightLock then
+          self:resolveTurn(fightLock)
+          return
+        end
         if not self:playerHasPP() then
           -- _NoMovesLeftText, then Struggle engages
           self:say(("%s has no\nmoves left!"):format(self.player.name))
@@ -1081,6 +1173,7 @@ function BattleState:update(dt)
         end
         self.phase = "moveSelect"
         self.moveIndex = math.min(self.moveIndex, #self.player.curMoves)
+        self.moveSwapIndex = nil
       elseif choice == "run" then
         self:tryRun()
       elseif choice == "item" then
@@ -1098,9 +1191,22 @@ function BattleState:update(dt)
       self.moveIndex = self.moveIndex > 1 and self.moveIndex - 1 or #moves
     elseif input:wasPressed("down") then
       self.moveIndex = self.moveIndex < #moves and self.moveIndex + 1 or 1
+    elseif input:wasPressed("select") then
+      if self.moveSwapIndex then
+        self:swapMoves(self.moveSwapIndex, self.moveIndex)
+        self.moveSwapIndex = nil
+      else
+        self.moveSwapIndex = self.moveIndex
+      end
     elseif input:wasPressed("b") then
+      self.moveSwapIndex = nil
       self.phase = "menu"
     elseif input:wasPressed("a") then
+      if self.moveSwapIndex then
+        self:swapMoves(self.moveSwapIndex, self.moveIndex)
+        self.moveSwapIndex = nil
+        return
+      end
       local mv = moves[self.moveIndex]
       if self.player.disabledSlot == self.moveIndex then
         self:say("The move is\ndisabled!")
@@ -1469,6 +1575,9 @@ function BattleState:resolveSwitch(newMon)
     self:restoreMimicked(self.player) -- the battle copy leaves with it
     local previous = self.player
     self.player = makeBattler(self.data, newMon, true, self.game.save)
+    -- SendOutMon (core.asm:1761-1762): player's send-out clears the
+    -- foe's USING_TRAPPING_MOVE -- Wrap/Bind/etc. ends on any switch
+    clearTrapping(self.enemy)
     self:syncSides()
     Runtime.emit("battle.battler_switched", {
       battle = self, side = self.sides[1], battler = self.player,
@@ -1501,10 +1610,16 @@ function BattleState:endOfTurn()
   -- that sets the flag also zeroes the counter, so a stale value is
   -- unobservable (a switch or cure downgrades Toxic to plain poison).
   self.sideToxic = self.sideToxic or {}
-  for _, pair in ipairs({ { self.player, self.enemy, "player" },
-                          { self.enemy, self.player, "enemy" } }) do
-    local b, opp, side = pair[1], pair[2], pair[3]
-    if b.mon.hp > 0 then
+  -- a battler whose opponent was already knocked out by a move this turn
+  -- skips its own residual (HandlePoisonBurnLeechSeed is bypassed when the
+  -- move faints the target); snapshot before residual so one side's
+  -- residual faint can't suppress the other's
+  local playerAlive = self.player.mon.hp > 0
+  local enemyAlive = self.enemy.mon.hp > 0
+  for _, pair in ipairs({ { self.player, self.enemy, "player", enemyAlive },
+                          { self.enemy, self.player, "enemy", playerAlive } }) do
+    local b, opp, side, oppAlive = pair[1], pair[2], pair[3], pair[4]
+    if b.mon.hp > 0 and oppAlive then
       local msgs = Status.residual(b, opp, self)
       for _, m in ipairs(msgs) do self:sayNext(prefixEnemy(m, b)) end
       if #msgs > 0 then self:drainNext() end -- poison/burn/seed HP moved
@@ -1568,10 +1683,19 @@ end
 -- only after MoveHitTest / the effect lands (HandleIfPlayerMoveMissed skips
 -- it on a miss unless EXPLODE_EFFECT); we insert early for blink attachment
 -- and peel it back on miss/fail paths.
+-- Dig/Fly charge leaves the user pic hidden (SLIDE_DOWN / TELEPORT); the
+-- second-turn DIG/FLY anim restores it via SE_SLIDE_MON_UP / SE_SHOW_MON_PIC.
+-- Cancelling that row on miss/immune would otherwise leave the digger
+-- invisible until another anim's resetPicFx (#100).
 function BattleState:cancelMoveAnim()
   local row = self.moveAnimRow
   if not row then return end
   self.moveAnimRow = nil
+  if row.anim == "DIG" or row.anim == "FLY" then
+    local user = row.attackerIsPlayer and self.player or self.enemy
+    local pf = user and self.picFx and self.picFx[user]
+    if pf then pf.hidden = nil end
+  end
   for i, item in ipairs(self.queue) do
     if item == row then
       table.remove(self.queue, i)
@@ -1635,14 +1759,23 @@ end
 
 -- transient pic effects reset when a new animation row starts (each
 -- PlayAnimation redraws from a clean slate); `minimized` survives --
--- the minimize sprite replaces the pic DATA, so redraws keep it until
--- the pic is reloaded (switch/Transform/ChangeMonPic)
+-- the minimize sprite replaces the pic DATA until reload. Dig/Fly's
+-- charge hide is a cleared tilemap that must survive until SE_SHOW_* /
+-- SE_SLIDE_MON_UP (or cancelMoveAnim on a missed Dig/Fly release):
+-- clearing it here made Dig pop in before emerge and wrap/bounce (#100).
+-- Other hides (Acid Armor, etc.) still clear so the next anim restores.
 function BattleState:resetPicFx()
   if not self.picFx then return end
-  for _, pf in pairs(self.picFx) do
+  local digFly = self.animName == "DIG" or self.animName == "FLY"
+  local digFlyUser = digFly and (self.animAttackerIsPlayer
+                                 and self.player or self.enemy) or nil
+  for battler, pf in pairs(self.picFx) do
     pf.kind, pf.t = nil, nil
     pf.ox, pf.oy = 0, 0
-    pf.hidden = nil
+    local keepHide = battler.invulnerable or battler == digFlyUser
+    if not keepHide then
+      pf.hidden = nil
+    end
   end
 end
 
@@ -2043,6 +2176,8 @@ function BattleState:executeAction(user, target, action)
     local oldName = self.enemy.name
     self.enemyIndex = action.index
     self.enemy = makeBattler(self.data, self.enemyParty[action.index], false)
+    -- EnemySendOutFirstMon (core.asm:1314-1315): clears player's trap
+    clearTrapping(self.player)
     self:syncSides()
     Runtime.emit("battle.battler_switched", {
       battle = self, side = self.sides[2], battler = self.enemy,
@@ -2093,6 +2228,43 @@ function BattleState:executeAction(user, target, action)
   self:performMove(user, target, action, false)
 end
 
+-- Sleep / confusion onomatopoeia from Check*StatusConditions
+-- (core.asm): side-specific SLP_*/CONF_* anims, not the Rest/Amnesia
+-- move rows.  Player sleep plays the anim before FastAsleepText;
+-- enemy sleep and both confusion sides print the text first.
+function BattleState:statusOnomatopoeia(user, kind)
+  local isPlayer = user.isPlayer
+  local anim
+  if kind == "sleep" then
+    anim = isPlayer and "SLP_PLAYER_ANIM" or "SLP_ANIM"
+  else
+    anim = isPlayer and "CONF_PLAYER_ANIM" or "CONF_ANIM"
+  end
+  local text = kind == "sleep"
+    and (displayName(user) .. "\nis fast asleep!")
+    or (displayName(user) .. "\nis confused!")
+  if kind == "sleep" and isPlayer then
+    self:animNext(anim, isPlayer)
+    self:sayNext(text)
+  else
+    self:sayNext(text)
+    self:animNext(anim, isPlayer)
+  end
+end
+
+-- Queue status text (+ sleep/confusion FX when the line matches).
+-- Wake / snap-out / flinch / etc. stay text-only.
+function BattleState:sayStatusMsg(user, msg)
+  local text = prefixEnemy(msg, user)
+  if msg:find("is fast asleep!", 1, true) then
+    self:statusOnomatopoeia(user, "sleep")
+  elseif msg:find("is confused!", 1, true) then
+    self:statusOnomatopoeia(user, "confused")
+  else
+    self:sayNext(text)
+  end
+end
+
 -- The pre-recharge slice of CheckPlayerStatusConditions (core.asm:
 -- 3328-3382): sleep -> freeze -> held-in-place -> flinch, each losing
 -- the turn WITHOUT consuming the recharge flag.  The disable/confusion/
@@ -2111,7 +2283,7 @@ function BattleState:preRechargeChecks(user, target)
       mon.status = nil
       self:sayNext(displayName(user) .. "\nwoke up!")
     else
-      self:sayNext(displayName(user) .. "\nis fast asleep!")
+      self:statusOnomatopoeia(user, "sleep")
     end
     return true
   end
@@ -2138,7 +2310,7 @@ end
 -- returns true when the user's action is interrupted.
 function BattleState:statusInterrupt(user, target)
   local canMove, msgs, selfHit = Status.beforeMove(user, self.rng, self)
-  for _, m in ipairs(msgs) do self:sayNext(prefixEnemy(m, user)) end
+  for _, m in ipairs(msgs) do self:sayStatusMsg(user, m) end
   if selfHit then
     -- confusion self-hit (core.asm:3428-3434): clears everything in
     -- status1 except CONFUSED, then HandleSelfConfusionDamage deals a
@@ -2215,11 +2387,16 @@ function BattleState:performMove(user, target, moveInst, isCalled)
     user.charging, user.chargeReady, user.invulnerable = nil, nil, nil
   end
 
-  -- PP: not for continuations, struggle, or called moves
+  -- PP: not for continuations, struggle, called moves, or (under
+  -- gen1_faithful) wild/trainer enemies — pokered DecrementPP only ever
+  -- mutates wBattleMonPP / party PP (engine/battle/decrement_pp.asm).
   local isContinuation = releasing
       or (user.thrashTurns and user.thrashTurns > 0 and moveInst == user.thrashMove)
       or moveInst == user.rageMove
-  if not isContinuation and not moveInst.struggle and not isCalled then
+  local enemyUnlimited = not user.isPlayer
+      and self.ruleset and self.ruleset.enemyUnlimitedPP
+  if not isContinuation and not moveInst.struggle and not isCalled
+      and not enemyUnlimited then
     moveInst.pp = math.max(0, moveInst.pp - 1)
   end
 
@@ -2265,6 +2442,7 @@ function BattleState:performMove(user, target, moveInst, isCalled)
   -- falling back to the id tables (Fly AND Dig go semi-invulnerable:
   -- ChargeEffect sets INVULNERABLE for both)
   if record and record.charge and not releasing then
+    self:cancelMoveAnim()
     user.charging = moveInst
     user.chargeReady = true
     local invulnerable = move.semiInvulnerable
@@ -2274,6 +2452,15 @@ function BattleState:performMove(user, target, moveInst, isCalled)
     if invulnerable then
       user.invulnerable = true
     end
+    local chargeAnim = record.charge.anim
+    if move.id == "DIG" then
+      chargeAnim = "SLIDE_DOWN_ANIM"
+    elseif record.charge.enemyAnim and not user.isPlayer then
+      chargeAnim = record.charge.enemyAnim
+    end
+    if chargeAnim then
+      self:animNext(chargeAnim, user.isPlayer)
+    end
     local chargeText = move.chargeText or CHARGE_TEXT[move.id]
                        or "%s\nis charging up!"
     self:sayNext(chargeText:format(displayName(user)))
@@ -2401,6 +2588,9 @@ end
 function BattleState:onFaint(battler)
   if battler.faintQueued then return end
   battler.faintQueued = true
+  if battler.isPlayer and self.participants then
+    self.participants[battler.mon] = nil
+  end
   Runtime.emit("battle.fainted", { battle = self, battler = battler })
   -- the faint slide + cry ride the queue (after the move animation and
   -- the HP-bar drain, pokered's order); the slide finishes before the
@@ -2437,9 +2627,9 @@ function BattleState:enemyMonFainted()
   -- exp is split among the mons that fought this enemy
   -- (engine/battle/experience.asm); traded mons earn x1.5; each
   -- participant gets the full stat exp
-  -- the divisor counts EVERY participant, fainted ones included
-  -- (DivideExpDataByNumMonsGainingExp keeps their flag bits); only the
-  -- living ones are actually paid
+  -- a mon that fainted mid-fight has had its gain-exp flag cleared
+  -- (RemoveFaintedPlayerMon), so it drops out of the divisor and only
+  -- the surviving participants are counted and paid
   local participants, alive = 0, {}
   for _, mon in ipairs(self.game.save.party) do
     if self.participants and self.participants[mon] then
@@ -2510,8 +2700,20 @@ function BattleState:enemyMonFainted()
   self.participants = {}
 
   if self.kind == "trainer" then
-    if self.enemyIndex < #self.enemyParty then
-      self.enemyIndex = self.enemyIndex + 1
+    -- EnemySendOutFirstMon / AnyEnemyPokemonAliveCheck (core.asm): scan
+    -- the whole enemy party for the first mon with HP left.  Blindly
+    -- doing enemyIndex+1 softlocks after an AI switch (Agatha): a later
+    -- slot can already be fainted, so the empty-HP mon comes out, the
+    -- FIGHT menu returns, and executeAction no-ops on target.hp <= 0.
+    local nextIndex
+    for i, mon in ipairs(self.enemyParty) do
+      if mon.hp > 0 then
+        nextIndex = i
+        break
+      end
+    end
+    if nextIndex then
+      self.enemyIndex = nextIndex
       -- SHIFT battle style (the default): announce the next mon and
       -- offer a free switch (SET skips the prompt)
       local nextMon = self.enemyParty[self.enemyIndex]
@@ -2535,6 +2737,7 @@ function BattleState:enemyMonFainted()
                 if mon ~= self.player.mon and mon.hp > 0 then
                   local previous = self.player
                   self.player = makeBattler(self.data, mon, true, game.save)
+                  clearTrapping(self.enemy) -- SendOutMon clears foe trap
                   self:syncSides()
                   Runtime.emit("battle.battler_switched", {
                     battle = self, side = self.sides[1],
@@ -2560,6 +2763,8 @@ function BattleState:enemyMonFainted()
       self:act(function()
         local previous = self.enemy
         self.enemy = makeBattler(self.data, self.enemyParty[self.enemyIndex], false)
+        -- EnemySendOutFirstMon (core.asm:1314-1315): clears player's trap
+        clearTrapping(self.player)
         self:syncSides()
         Runtime.emit("battle.battler_switched", {
           battle = self, side = self.sides[2], battler = self.enemy,
@@ -2713,6 +2918,7 @@ function BattleState:openReplacementMenu()
         self:restoreMimicked(self.player)
         local previous = self.player
         self.player = makeBattler(self.data, mon, true, game.save)
+        clearTrapping(self.enemy) -- SendOutMon clears foe trap
         self:syncSides()
         Runtime.emit("battle.battler_switched", {
           battle = self, side = self.sides[1], battler = self.player,
@@ -2749,6 +2955,7 @@ function BattleState:safariAction(choice)
   local playerName = self.game.save.player.name
 
   if choice == "run" then
+    require("src.core.Sound").play(self.data, "Run")
     self:say("Got away safely!")
     self.result = "run"
     self.afterQueue = "finish"
@@ -2830,6 +3037,12 @@ function BattleState:safariEnemyTurn()
     end
     if fled then
       self:sayNext(("Wild %s\nran!"):format(self.enemy.name))
+      self:actNext(function()
+        require("src.core.Sound").play(self.data, "Run")
+        startPicKind(self:picFxFor(self.enemy), "slideOff")
+      end)
+      self.nextInsert = (self.nextInsert or 0) + 1
+      table.insert(self.queue, self.nextInsert, { wait = 24 })
       self.result = "run"
       self.afterQueue = "finish"
     end
@@ -3403,17 +3616,16 @@ function BattleState:drawBattlerPic(battler, x, y, scale)
       love.graphics.draw(img, quad, x + ox, y + oy, 0, scale, scale)
     end
   elseif k == "slideUp" then
-    -- AnimationSlideMonUp: cyclic upward wrap, one row per 2 frames
-    local scroll = 8 * math.min(7, math.floor(t / 2) + 1)
-    local src = math.floor(scroll / scale) % h
-    if src == 0 then
-      love.graphics.draw(img, x + ox, y, 0, scale, scale)
-    else
-      local top = love.graphics.newQuad(0, src, w, h - src, w, h)
-      love.graphics.draw(img, top, x + ox, y, 0, scale, scale)
-      local bottom = love.graphics.newQuad(0, 0, w, src, w, h)
-      love.graphics.draw(img, bottom, x + ox, y + (h - src) * scale,
-                         0, scale, scale)
+    -- AnimationSlideMonUp (animations.asm): 7 row steps x 2f. After Dig's
+    -- SLIDE_DOWN the tilemap is blank; each step fills the next bottom
+    -- row so the mon emerges from underground. A cyclic wrap of a full
+    -- pic looked like a bounce at Dig's end (#100).
+    local step = math.min(7, math.floor((t - 1) / 2) + 1)
+    local visible = math.floor(h * step / 7)
+    if visible > 0 then
+      local quad = love.graphics.newQuad(0, h - visible, w, visible, w, h)
+      love.graphics.draw(img, quad, x + ox,
+                         y + (h - visible) * scale, 0, scale, scale)
     end
   elseif xscale < 1 then
     -- AnimationSquishMonPic: columns collapse toward the middle
@@ -3494,12 +3706,28 @@ function BattleState:sgbBattlePals()
     if placeholder or not b then return pals.MEWMON or pals.GREENBAR end
     return PaletteFX.monPal(self.data, b.mon.species) or pals.MEWMON
   end
-  return {
+  local out = {
     [0] = bar(self.player),
     [1] = bar(self.enemy),
     [2] = mon(self.player, self.showPlayerBack or self.safari or self.demo),
     [3] = mon(self.enemy, self.showEnemyTrainer),
   }
+  -- OG RED: the Game Boy Color drew the whole battle from one BG palette --
+  -- white paper, black ink -- so every zone shares the same background and
+  -- outline; only the two mid shades differ per element (green HP bar, red
+  -- mon pic).  The bar/base zones otherwise carry the SGB off-white
+  -- (255,239,255) as color 0 while the mon zones (monPal -> GBC_BG) carry a
+  -- true white, which is what drew a white box around each pic on the pink
+  -- field.  Snap every zone's color 0/3 to the global GBC white/black; the
+  -- mid shades (and the green bar the user prefers) stay untouched.
+  if PaletteFX.mode == "ogred" then
+    local white, black = PaletteFX.GBC_BG[1], PaletteFX.GBC_BG[4]
+    for i = 0, 3 do
+      local c = out[i]
+      out[i] = { white, c[2], c[3], black }
+    end
+  end
+  return out
 end
 
 -- the SGB palette covering a screen pixel (BlkPacket_Battle regions)
@@ -3609,6 +3837,20 @@ function BattleState:drawAnimLayer(colorized)
   end
 end
 
+-- Front/trainer pics: LoadUncompressedSpriteData centers the sprite in
+-- a 7x7 tile buffer, then CopyUncompressedPicToTilemap places that
+-- buffer at hlcoord 12,0.  Horizontal pad is floor((8-w)/2) tiles;
+-- vertical pad is (7-h) -- bottom-aligned inside the 7x7.
+local function enemyPicXY(img, slide, sx, sy)
+  local tw = math.floor(img:getWidth() / 8)
+  local th = math.floor(img:getHeight() / 8)
+  if tw < 1 then tw = 1 elseif tw > 7 then tw = 7 end
+  if th < 1 then th = 1 elseif th > 7 then th = 7 end
+  local hPad = math.floor((8 - tw) / 2)
+  local vPad = 7 - th
+  return 96 + 8 * hPad - slide + sx, 8 * vPad + sy
+end
+
 -- the two mon pics (or the trainer/back pics), offset by the window
 -- shake -- on the GB the pics are BG tiles, so they move with it
 function BattleState:drawPicsLayer(slide, sx, sy)
@@ -3626,19 +3868,18 @@ function BattleState:drawPicsLayer(slide, sx, sy)
     g.intersectScissor(0, 0, 160, clipY)
     clipped = true
   end
-  -- Enemy: front sprite top-right (GB: pic at hlcoord 12,0).
+  -- Enemy: front sprite in the 7x7 slot at hlcoord 12,0.
   if self.showEnemyTrainer and self.trainerPic then
     -- the enemy trainer pic holds the mon slot until the send-out
     local img = self:picImage(self.trainerPic)
     love.graphics.setColor(1, 1, 1, 1)
-    love.graphics.draw(img, 160 - 8 - img:getWidth() - slide + sx,
-                       math.max(0, 48 - img:getHeight()) + sy)
+    local ex, ey = enemyPicXY(img, slide, sx, sy)
+    love.graphics.draw(img, ex, ey)
   elseif self.enemy and self.enemy.sprite and not self.enemyHidden
      and not self.enemySendingOut and not self:fxHidden(self.enemy) then
     local img = self:picImage(self.enemy.sprite)
     love.graphics.setColor(1, 1, 1, 1)
-    local ex = 160 - 8 - img:getWidth() - slide + sx
-    local ey = math.max(0, 48 - img:getHeight()) + sy
+    local ex, ey = enemyPicXY(img, slide, sx, sy)
     local gs = self:growInScale(self.enemy)
     if gs then
       -- AnimateSendingOutMon: the downscaled pic keeps its bottom edge
@@ -3652,15 +3893,18 @@ function BattleState:drawPicsLayer(slide, sx, sy)
     end
   end
 
-  -- Player: back sprite bottom-left (2x like the GB, feet near y=100).
+  -- Player: back sprite at hlcoord 1,5 (x=8), 2x like the GB, feet at y=96.
+  -- Left transparent columns (matted white) are pulled back so opaque
+  -- pixels land where hardware's white-on-white columns left them.
   local hidePlayer = self.safari or self.demo
   if self.showPlayerBack and self.playerBackPic then
     -- Red's (or the old man's) back pic until "Go!"; it stays up for
     -- the whole safari / catch-demo battle like the original
     local img = self:picImage(self.playerBackPic)
     local pad = imagePadBottom[self.playerBackPic] or 0
+    local padL = imagePadLeft[self.playerBackPic] or 0
     love.graphics.setColor(1, 1, 1, 1)
-    love.graphics.draw(img, 16 + slide + sx,
+    love.graphics.draw(img, 8 - padL * 2 + slide + sx,
                        96 - (img:getHeight() - pad) * 2 + sy, 0, 2, 2)
   elseif self.player and self.player.sprite and not hidePlayer
      and not self.sendingOut and not self:fxHidden(self.player) then
@@ -3668,17 +3912,19 @@ function BattleState:drawPicsLayer(slide, sx, sy)
     love.graphics.setColor(1, 1, 1, 1)
     -- feet flush on the text box top (y=96), ignoring baked-in padding
     local pad = imagePadBottom[self.player.sprite] or 0
+    local padL = imagePadLeft[self.player.sprite] or 0
+    local px = 8 - padL * 2 + sx
     local gs = self:growInScale(self.player)
     if gs then
       -- the player-side AnimateSendingOutMon grow (after the poof,
-      -- core.asm:1757-1762): feet pinned at y=96, center at x=16+w
+      -- core.asm:1757-1762): feet pinned at y=96, center at x=8+w
       if gs > 0 then
-        love.graphics.draw(img, 16 + img:getWidth() * (1 - gs) + sx,
+        love.graphics.draw(img, px + img:getWidth() * (1 - gs),
                            96 - (img:getHeight() - pad) * 2 * gs + sy,
                            0, 2 * gs, 2 * gs)
       end
     else
-      self:drawBattlerPic(self.player, 16 + sx,
+      self:drawBattlerPic(self.player, px,
                           96 - (img:getHeight() - pad) * 2 + sy, 2)
     end
   end
@@ -3733,16 +3979,22 @@ function BattleState:drawHUDs(slide)
     love.graphics.setColor(0, 0, 0, 1)
     Font.draw(("BALLx%2d"):format(self.safari.balls), 88, 72)
   end
-  -- trainer-battle party pokeball rows during the intro
+  -- trainer/link party pokeball rows during the intro
   -- (SetupPlayerAndEnemyPokeballs, draw_hud_pokeball_gfx.asm)
-  if self.kind == "trainer" and (self.showEnemyTrainer or self.showPlayerBack)
-     and slide == 0 then
+  local showIntroBalls = slide == 0 and (
+    (self.kind == "trainer" and (self.showEnemyTrainer or self.showPlayerBack))
+    or (self.kind == "link" and (self.showPlayerBack or self.enemySendingOut))
+  )
+  if showIntroBalls then
     love.graphics.setColor(1, 1, 1, 1)
-    if self.showEnemyTrainer and self.enemyParty then
+    if self.enemyParty and (
+         (self.kind == "trainer" and self.showEnemyTrainer)
+         or (self.kind == "link" and self.enemySendingOut)
+       ) then
       self:drawBallRow(self.enemyParty, 64, 16, -8)
     end
     if self.showPlayerBack then
-      self:drawBallRow(self.game.save.party, 88, 80, 8)
+      self:drawBallRow(self.playerParty or self.game.save.party, 88, 80, 8)
     end
   end
   local hidePlayer = self.safari or self.demo
@@ -3776,7 +4028,8 @@ function BattleState:drawTextArea()
   if self.phase == "messages" and self.current then
     local shown = 0
     for li, codes in ipairs(self.lines) do
-      local y = 104 + li * 8
+      -- battle text uses every other tile row (hlcoord *,14 / *,16)
+      local y = 112 + (li - 1) * 16
       for i = 1, #codes do
         if shown >= self.charIndex then break end
         Font.drawCode(codes[i], 8 + (i - 1) * 8, y)
@@ -3826,7 +4079,11 @@ function BattleState:drawTextArea()
     for i, mv in ipairs(self.player.curMoves) do
       Font.draw(self.data.moves[mv.id].name, 48, 96 + i * 8)
     end
-    Font.drawCode(0xED, 40, 96 + self.moveIndex * 8)
+    Font.drawCode((self.moveSwapIndex == self.moveIndex) and 0xEC or 0xED,
+                  40, 96 + self.moveIndex * 8)
+    if self.moveSwapIndex and self.moveSwapIndex ~= self.moveIndex then
+      Font.drawCode(0xEC, 40, 96 + self.moveSwapIndex * 8)
+    end
     local sel = self.player.curMoves[self.moveIndex]
     if sel then
       if self.player.disabledSlot == self.moveIndex then

src/battle/EffectRegistry.lua

@@ -176,25 +176,51 @@ function EffectRegistry.runDamaging(battle, ctx, record)
   end
   battle.lastDamage = dmg -- wDamage (shared by both sides, read by Counter)
 
-  -- the hit blink + damage sound ride the queue behind the animation:
-  -- on the move's anim row when one was announced, else on a bare hit
-  -- row (thrash/rage continuations), placed BEFORE the drain rows the
-  -- hits loop inserts so the blink precedes the bar drain
-  local hitRow = battle.moveAnimRow
-  if not hitRow then
-    battle.nextInsert = (battle.nextInsert or 0) + 1
-    hitRow = { hitRow = true }
-    table.insert(battle.queue, battle.nextInsert, hitRow)
-  end
+  -- the hit blink + damage sound ride each animation row, placed BEFORE
+  -- that hit's drain so the blink precedes the bar.  Multi-hit moves
+  -- replay PlayMoveAnimation per strike (pokered: GetPlayerAnimationType
+  -- / GetEnemyAnimationType loop on wNumAttacksLeft); hit 1 reuses the
+  -- announcement-time moveAnimRow, later hits queue fresh anim rows.
+  -- Thrash/rage continuations have no announcement anim -- a bare
+  -- hitRow carries the blink instead.
+  local hitSfx = info.typeMult > 10 and "Super_Effective"
+                 or info.typeMult < 10 and "Not_Very_Effective" or "Damage"
+  local hitFx = { sfx = hitSfx,
+                  blink = battle:animationsOn() and target or nil }
 
   local totalDealt = 0
   local landed, brokeSub = 0, false
   for h = 1, hits do
     if target.mon.hp <= 0 then break end
+    local hitRow
+    if h == 1 then
+      hitRow = battle.moveAnimRow
+      if not hitRow then
+        battle.nextInsert = (battle.nextInsert or 0) + 1
+        hitRow = { hitRow = true }
+        table.insert(battle.queue, battle.nextInsert, hitRow)
+      end
+    else
+      battle.nextInsert = (battle.nextInsert or 0) + 1
+      hitRow = { anim = move.id, attackerIsPlayer = user.isPlayer }
+      table.insert(battle.queue, battle.nextInsert, hitRow)
+    end
     local hadSub = target.substituteHP ~= nil
     local dealt = battle:applyDamage(target, dmg)
     totalDealt = totalDealt + dealt
     landed = h
+    if dealt > 0 then hitRow.hit = hitFx end
+    -- PrintCriticalOHKOText + DisplayEffectiveness run inside the
+    -- multi-hit loop (core.asm .moveDidNotMiss before the jump back
+    -- to GetPlayerAnimationType), so crit/effectiveness reprint on
+    -- every strike -- damage was only rolled once
+    if info.crit then battle:sayNext("Critical hit!") end
+    if info.ohko then battle:sayNext("One-hit KO!") end
+    if info.typeMult > 10 then
+      battle:sayNext("It's super\neffective!")
+    elseif info.typeMult < 10 then
+      battle:sayNext("It's not very\neffective...")
+    end
     if Runtime.wants("battle.damage_dealt") then
       Runtime.emit("battle.damage_dealt", {
         battle = battle, user = user, target = target, move = move,
@@ -208,23 +234,6 @@ function EffectRegistry.runDamaging(battle, ctx, record)
     end
   end
   hits = landed > 0 and landed or hits
-  if totalDealt > 0 then
-    -- the original's per-hit sound: normal / super / not-very-effective
-    local hitSfx = info.typeMult > 10 and "Super_Effective"
-                   or info.typeMult < 10 and "Not_Very_Effective" or "Damage"
-    hitRow.hit = { sfx = hitSfx,
-                   blink = battle:animationsOn() and target or nil }
-  end
-  -- PrintCriticalOHKOText prints "Critical hit!"/"One-hit KO!" right
-  -- after the damage lands, BEFORE DisplayEffectiveness (core.asm
-  -- .moveDidNotMiss); the multi-hit count follows the last hit
-  if info.crit then battle:sayNext("Critical hit!") end
-  if info.ohko then battle:sayNext("One-hit KO!") end
-  if info.typeMult > 10 then
-    battle:sayNext("It's super\neffective!")
-  elseif info.typeMult < 10 then
-    battle:sayNext("It's not very\neffective...")
-  end
   if hits > 1 then
     -- player: _MultiHitText; enemy: _HitXTimesText (always plural)
     if user.isPlayer then

src/battle/MoveEffects.lua

@@ -516,8 +516,8 @@ MoveEffects.full = {
 
   -- charge moves: first turn just charges; Fly AND Dig go
   -- semi-invulnerable (ChargeEffect sets INVULNERABLE for both)
-  CHARGE_EFFECT = { charge = {} },
-  FLY_EFFECT = { charge = { invulnerable = true } },
+  CHARGE_EFFECT = { charge = { anim = "XSTATITEM_ANIM", enemyAnim = "XSTATITEM_DUPLICATE_ANIM" } },
+  FLY_EFFECT = { charge = { invulnerable = true, anim = "TELEPORT" } },
 
   TRAPPING_EFFECT = {
     -- TrappingEffect runs BEFORE the hit test and clears the target's

src/battle/TrainerAI.lua

@@ -15,7 +15,8 @@
 -- (super-effective) or adds 1 (not-effective when a better move exists);
 -- the MINIMUM-scored move is chosen, ties broken uniformly among the
 -- tied minima (core.asm:2971-3002).  A non-minimal move is never
--- selectable.  Respects PP, Disable and Transform/Mimic move overrides.
+-- selectable.  Respects Disable (and PP only when the ruleset depletes
+-- enemy PP — Gen 1 AI never reads wEnemyMonPP).
 
 local TypeChart = require("src.battle.TypeChart")
 
@@ -212,9 +213,13 @@ end
 
 function TrainerAI.chooseMove(battler, rng, battle)
   rng = rng or love.math.random
+  -- Gen 1: SelectEnemyMove never consults wEnemyMonPP; Struggle only when
+  -- every move slot is missing/disabled (core.asm:2957-2999). modern_clean
+  -- depletes enemy PP and falls back to Struggle when none remain.
+  local unlimited = battle and battle.ruleset and battle.ruleset.enemyUnlimitedPP
   local usable = {}
   for i, mv in ipairs(battler.curMoves) do
-    if mv.pp > 0 and battler.disabledSlot ~= i then
+    if battler.disabledSlot ~= i and (unlimited or mv.pp > 0) then
       table.insert(usable, mv)
     end
   end

src/battle/rulesets/gen1_faithful.lua

@@ -13,4 +13,7 @@ return {
   randMax = 255,
   -- Focus Energy famously QUARTERS the crit rate instead of x4
   focusEnergyBug = true,
+  -- Wild/trainer enemies never spend PP (DecrementPP only touches the
+  -- player side in pokered). They therefore never Struggle from empty PP.
+  enemyUnlimitedPP = true,
 }

src/battle/rulesets/modern_clean.lua

@@ -9,4 +9,6 @@ return {
   randMin = 217,
   randMax = 255,
   focusEnergyBug = false,
+  -- Gen 2+ style: AI opponents deplete PP and can Struggle when empty.
+  enemyUnlimitedPP = false,
 }

src/core/ChipSynth.lua

@@ -0,0 +1,760 @@
+-- Pure Game Boy audio synthesis (the DMG/GBC channel-program interpreter and
+-- PCM renderer), factored out of ChipAudio so it can run on EITHER the main
+-- thread (SFX/cries, and the synchronous music fallback) or the ChipAudio
+-- worker thread (src/core/chip_worker.lua), which is where map/battle music is
+-- synthesized so a song change never stutters the render thread.
+--
+-- Deliberately depends ONLY on `bit`, love.sound and love.filesystem: no
+-- love.audio (Sources are a playback concern the caller owns) and no
+-- src.render.Assets (hot-reload registration stays in ChipAudio).  Both of
+-- those are unavailable or main-thread-only inside a love.thread worker, so
+-- keeping them out is what lets the same synth code run in the worker.
+
+local bit = require("bit")
+
+local ChipSynth = {}
+
+local SAMPLE_RATE = 22050
+local TICKS_PER_SECOND = 15360
+local FRAME_TICKS = 256
+local GB_CLOCK = 4194304
+
+-- one 4096-sample stereo SoundData is the unit both the worker hands off and
+-- the synchronous fallback queues; the source keeps MUSIC_BUFFER_COUNT of them
+-- (~6s) for stall tolerance (window resize, a long GC pause)
+local MUSIC_BUFFER_SAMPLES = 4096
+local MUSIC_BUFFER_COUNT = 32
+
+ChipSynth.SAMPLE_RATE = SAMPLE_RATE
+ChipSynth.MUSIC_BUFFER_SAMPLES = MUSIC_BUFFER_SAMPLES
+ChipSynth.MUSIC_BUFFER_COUNT = MUSIC_BUFFER_COUNT
+
+local PITCHES = {
+  0xF82C, 0xF89D, 0xF907, 0xF96B, 0xF9CA, 0xFA23,
+  0xFA77, 0xFAC7, 0xFB12, 0xFB58, 0xFB9B, 0xFBDA,
+}
+local DUTY = { [0] = 0.125, [1] = 0.25, [2] = 0.5, [3] = 0.75 }
+local WAVE_LEVEL = { [0] = 0, [1] = 1, [2] = 0.5, [3] = 0.25 }
+local NOISE_DIVISORS = {
+  [0] = 8, [1] = 16, [2] = 32, [3] = 48,
+  [4] = 64, [5] = 80, [6] = 96, [7] = 112,
+}
+
+local function snapTicks(ticks)
+  return math.floor((ticks * 735 + 256) / 512)
+end
+
+local cachedProgramFile
+local cachedBanks
+
+local function loadBanks(data)
+  local audio = data.audio
+  if cachedProgramFile == audio.programFile and cachedBanks then
+    return cachedBanks
+  end
+  local raw, readError = love.filesystem.read(audio.programFile)
+  if not raw then error("could not read sound programs: " .. tostring(readError)) end
+  local banks = {}
+  for index, bank in ipairs(audio.bankOrder) do
+    local first = (index - 1) * 0x4000 + 1
+    banks[bank] = raw:sub(first, first + 0x3FFF)
+  end
+  cachedProgramFile, cachedBanks = audio.programFile, banks
+  return banks
+end
+
+-- drop the single-slot bank cache; the worker keeps its own copy of this
+-- module's state, so ChipAudio.invalidate must reach it via a worker message
+function ChipSynth.invalidateBanks()
+  cachedProgramFile, cachedBanks = nil, nil
+end
+
+-- A def-local program (ChipAsm output) is mounted as pseudo-bank 0 next to
+-- the ROM banks, so the 0x4000-window byte reader and every call/loop
+-- target work unchanged.  The ROM's own cached bank table is never touched
+-- because bank 0 differs per def, and a blob that carries its own waves and
+-- drums renders even where programs.bin is unreadable.
+local function engineBanks(data, chip)
+  if not chip then return loadBanks(data) end
+  local banks = {}
+  local ok, romBanks = pcall(loadBanks, data)
+  if ok then
+    for bank, bytes in pairs(romBanks) do banks[bank] = bytes end
+  end
+  banks[0] = chip.blob
+  return banks
+end
+
+local function romByte(banks, bank, address)
+  local bytes = assert(banks[bank], "uncached audio bank " .. tostring(bank))
+  local value = bytes:byte(address - 0x4000 + 1)
+  if not value then
+    error(("audio read outside bank %02X:%04X"):format(bank, address))
+  end
+  return value
+end
+
+local function romWord(banks, bank, address)
+  return romByte(banks, bank, address)
+    + romByte(banks, bank, address + 1) * 0x100
+end
+
+local function headerChannels(banks, header)
+  local channels = {}
+  local address = header.address
+  local first = romByte(banks, header.bank, address)
+  local count = bit.rshift(bit.band(first, 0xF0), 6) + 1
+  for _ = 1, count do
+    local descriptor = romByte(banks, header.bank, address)
+    channels[#channels + 1] = {
+      number = bit.band(descriptor, 0x0F) + 1,
+      address = romWord(banks, header.bank, address + 1),
+    }
+    address = address + 3
+  end
+  return channels
+end
+
+local function fadeValue(nibble)
+  if bit.band(nibble, 8) ~= 0 then return -bit.band(nibble, 7) end
+  return nibble
+end
+
+local Channel = {}
+Channel.__index = Channel
+
+function Channel.new(engine, spec, options)
+  options = options or {}
+  local hardware = (spec.number - 1) % 4 + 1
+  local isSfxChannel = spec.number > 4
+  return setmetatable({
+    engine = engine,
+    bank = options.bank,
+    address = spec.address,
+    number = spec.number,
+    hardware = hardware,
+    wave = hardware == 3,
+    noise = hardware == 4,
+    sfx = isSfxChannel,
+    executeMusic = not isSfxChannel,
+    allowLoops = options.allowLoops ~= false,
+    frequencyOffset = options.frequencyOffset or 0,
+    frameTicks = options.frameTicks or FRAME_TICKS,
+    speed = 12,
+    volume = 12,
+    fade = 0,
+    duty = 0.5,
+    octave = 4,
+    waveInstrument = 0,
+    waveLevel = 1,
+    perfectPitch = false,
+    vibrato = nil,
+    pendingSlide = nil,
+    sweep = nil,
+    callStack = {},
+    loopCounts = {},
+    event = nil,
+    ended = false,
+    phase = 0,
+    noiseLfsr = 0x7FFF,
+    noiseClock = 0,
+    timeTicks = 0,
+  }, Channel)
+end
+
+function Channel:byte()
+  local value = romByte(self.engine.banks, self.bank, self.address)
+  self.address = self.address + 1
+  return value
+end
+
+function Channel:word()
+  local value = romWord(self.engine.banks, self.bank, self.address)
+  self.address = self.address + 2
+  return value
+end
+
+function Channel:frequency(note, octave)
+  local signed = PITCHES[note + 1] - 0x10000
+  local register = bit.band(
+    bit.arshift(signed, math.max(0, (octave or self.octave) - 1)), 0x7FF)
+  if self.perfectPitch then register = bit.band(register + 1, 0x7FF) end
+  return bit.band(register + self.frequencyOffset, 0x7FF)
+end
+
+function Channel:durationTicks(length)
+  local tempo = self.sfx and self.frameTicks or self.engine.tempo
+  local speed = self.sfx and (self.executeMusic and self.speed or 1)
+    or self.speed
+  return length * speed * tempo
+end
+
+function Channel:timedEvent(event, ticks)
+  local first = snapTicks(self.timeTicks)
+  self.timeTicks = self.timeTicks + ticks
+  event.duration = ticks / TICKS_PER_SECOND
+  event.samples = snapTicks(self.timeTicks) - first
+  event.sample = 0
+  event.elapsed = 0
+  return event
+end
+
+function Channel:pan()
+  local mask = bit.lshift(1, self.hardware - 1)
+  return bit.band(bit.rshift(self.engine.pan, 4), mask) ~= 0,
+    bit.band(self.engine.pan, mask) ~= 0
+end
+
+function Channel:tone(ticks, register, volume, fade)
+  if register >= 0x800 then
+    return self:timedEvent({ silence = true }, ticks)
+  end
+  local duration = ticks / TICKS_PER_SECOND
+  local panLeft, panRight = self:pan()
+  local slide
+  if self.pendingSlide then
+    slide = {
+      target = self.pendingSlide.target,
+      frames = math.max(1, duration * 60 - self.pendingSlide.length),
+    }
+    self.pendingSlide = nil
+  end
+  return self:timedEvent({
+    register = register,
+    volume = volume == nil and self.volume or volume,
+    fade = fade == nil and self.fade or fade,
+    duty = self.duty,
+    wave = self.wave,
+    waveInstrument = self.waveInstrument,
+    waveLevel = self.waveLevel,
+    vibrato = slide and nil or self.vibrato,
+    slide = slide,
+    sweep = self.sfx and self.hardware == 1 and self.sweep or nil,
+    panLeft = panLeft,
+    panRight = panRight,
+  }, ticks)
+end
+
+function Channel:noiseEvent(ticks, volume, fade, parameter)
+  local panLeft, panRight = self:pan()
+  return self:timedEvent({
+    noise = true,
+    volume = volume or self.volume,
+    fade = fade or 0,
+    noiseParameter = parameter,
+    panLeft = panLeft, panRight = panRight,
+  }, ticks)
+end
+
+function Channel:drumEvent(ticks, instrument)
+  local panLeft, panRight = self:pan()
+  return self:timedEvent({
+    noise = true,
+    drum = self.engine:noiseInstrument(instrument),
+    panLeft = panLeft,
+    panRight = panRight,
+  }, ticks)
+end
+
+function Channel:silenceEvent(ticks)
+  return self:timedEvent({ silence = true }, ticks)
+end
+
+function Channel:nextEvent()
+  if self.ended then return nil end
+  for _ = 1, 100000 do
+    local commandAddress = self.address
+    local command = self:byte()
+
+    if (self.executeMusic or not self.sfx) and command < 0xC0 then
+      local note = bit.rshift(command, 4)
+      local length = bit.band(command, 0x0F) + 1
+      if self.noise then
+        local instrument = note
+        if command >= 0xB0 then instrument = self:byte() end
+        return self:drumEvent(self:durationTicks(length), instrument)
+      end
+      return self:tone(self:durationTicks(length), self:frequency(note))
+    elseif command >= 0xC0 and command < 0xD0 then
+      local length = bit.band(command, 0x0F) + 1
+      return self:silenceEvent(self:durationTicks(length))
+    elseif command >= 0xD0 and command < 0xE0 then
+      self.speed = bit.band(command, 0x0F)
+      if not self.noise then
+        local packed = self:byte()
+        if self.wave then
+          self.waveLevel = WAVE_LEVEL[bit.band(bit.rshift(packed, 4), 3)]
+          self.waveInstrument = bit.band(packed, 0x0F)
+        else
+          self.volume = bit.rshift(packed, 4)
+          self.fade = fadeValue(bit.band(packed, 0x0F))
+        end
+      end
+    elseif command >= 0xE0 and command <= 0xE7 then
+      self.octave = 8 - bit.band(command, 7)
+    elseif command == 0xE8 then
+      self.perfectPitch = not self.perfectPitch
+    elseif command == 0xE9 then
+      -- Unused command.
+    elseif command == 0xEA then
+      local delay, packed = self:byte(), self:byte()
+      local depth = bit.rshift(packed, 4)
+      if depth == 0 then
+        self.vibrato = nil
+      else
+        self.vibrato = {
+          delay = delay,
+          above = bit.rshift(depth, 1) + bit.band(depth, 1),
+          below = bit.rshift(depth, 1),
+          rate = bit.band(packed, 0x0F),
+        }
+      end
+    elseif command == 0xEB then
+      local length, packed = self:byte(), self:byte()
+      local octave = 8 - bit.rshift(packed, 4)
+      self.pendingSlide = {
+        length = length,
+        target = self:frequency(bit.band(packed, 0x0F), octave),
+      }
+    elseif command == 0xEC then
+      self.duty = DUTY[bit.band(self:byte(), 3)] or 0.5
+    elseif command == 0xED then
+      self.engine.tempo = self:byte() * 0x100 + self:byte()
+    elseif command == 0xEE then
+      self.engine.pan = self:byte()
+    elseif command == 0xEF or command == 0xF0 then
+      self:byte()
+    elseif command == 0xF8 then
+      self.executeMusic = not self.executeMusic
+    elseif command == 0xFC then
+      local packed = self:byte()
+      self.duty = {
+        DUTY[bit.band(bit.rshift(packed, 6), 3)],
+        DUTY[bit.band(bit.rshift(packed, 4), 3)],
+        DUTY[bit.band(bit.rshift(packed, 2), 3)],
+        DUTY[bit.band(packed, 3)],
+      }
+    elseif command == 0xFD then
+      self.callStack[#self.callStack + 1] = self.address + 2
+      self.address = self:word()
+    elseif command == 0xFE then
+      local count, target = self:byte(), self:word()
+      if count == 0 then
+        if self.allowLoops then
+          self.address = target
+        else
+          self.ended = true
+          return nil
+        end
+      else
+        local remaining = self.loopCounts[commandAddress]
+        if remaining == nil then remaining = count end
+        remaining = remaining - 1
+        if remaining > 0 then
+          self.loopCounts[commandAddress] = remaining
+          self.address = target
+        else
+          self.loopCounts[commandAddress] = nil
+        end
+      end
+    elseif command == 0xFF then
+      local returnAddress = table.remove(self.callStack)
+      if returnAddress then
+        self.address = returnAddress
+      else
+        self.ended = true
+        return nil
+      end
+    elseif self.sfx and command >= 0x20 and command < 0x30 then
+      local length = bit.band(command, 0x0F) + 1
+      local packed = self:byte()
+      local volume = bit.rshift(packed, 4)
+      local fade = fadeValue(bit.band(packed, 0x0F))
+      if self.noise then
+        local parameter = self:byte()
+        return self:noiseEvent(
+          self:durationTicks(length), volume, fade, parameter)
+      end
+      local register = bit.band(self:word() + self.frequencyOffset, 0x7FF)
+      return self:tone(self:durationTicks(length), register, volume, fade)
+    elseif command == 0x10 then
+      local packed = self:byte()
+      self.sweep = {
+        pace = bit.band(bit.rshift(packed, 4), 7),
+        subtract = bit.band(packed, 8) ~= 0,
+        shift = bit.band(packed, 7),
+      }
+    else
+      self.ended = true
+      return nil
+    end
+  end
+  self.ended = true
+  return nil
+end
+
+local function envelopeVolume(volume, fade, elapsed)
+  if fade == 0 then return volume end
+  local steps = math.floor(elapsed / (math.abs(fade) / 64))
+  if fade > 0 then return math.max(0, volume - steps) end
+  return math.min(15, volume + steps)
+end
+
+function Channel:resetNoise()
+  self.noiseLfsr = 0x7FFF
+  self.noiseClock = 0
+end
+
+function Channel:clockNoise(width7)
+  local feedback = bit.bxor(
+    bit.band(self.noiseLfsr, 1),
+    bit.band(bit.rshift(self.noiseLfsr, 1), 1))
+  self.noiseLfsr = bit.bor(
+    bit.rshift(self.noiseLfsr, 1),
+    bit.lshift(feedback, 14))
+  if width7 then
+    self.noiseLfsr = bit.bor(
+      bit.band(self.noiseLfsr, bit.bnot(0x40)),
+      bit.lshift(feedback, 6))
+  end
+end
+
+function Channel:sampleNoise(parameter)
+  parameter = parameter or 0
+  local divisor = NOISE_DIVISORS[bit.band(parameter, 7)]
+  local shift = bit.rshift(parameter, 4)
+  local output = bit.band(self.noiseLfsr, 1) == 0 and 1 or -1
+  if shift >= 14 then return output end
+  local cycles = GB_CLOCK / divisor / (2 ^ shift) / SAMPLE_RATE
+  local width7 = bit.band(parameter, 8) ~= 0
+  local remaining = cycles
+  local area = 0
+
+  while remaining > 0 do
+    local untilClock = 1 - self.noiseClock
+    local span = math.min(remaining, untilClock)
+    output = bit.band(self.noiseLfsr, 1) == 0 and 1 or -1
+    area = area + output * span
+    self.noiseClock = self.noiseClock + span
+    remaining = remaining - span
+    if self.noiseClock >= 1 - 1e-12 then
+      self.noiseClock = 0
+      self:clockNoise(width7)
+    end
+  end
+
+  return area / cycles
+end
+
+local function sweepCalculation(register, sweep)
+  local delta = math.floor(register / (2 ^ sweep.shift))
+  if sweep.subtract then return register - delta end
+  return register + delta
+end
+
+local function sweptRegister(register, sweep, elapsed)
+  if not sweep or sweep.shift == 0 then return register end
+  local nextRegister = sweepCalculation(register, sweep)
+  if nextRegister > 0x7FF or nextRegister < 0 then return nil end
+  if sweep.pace == 0 then return register end
+
+  local iterations = math.floor(elapsed * 128 / sweep.pace)
+  for _ = 1, iterations do
+    register = nextRegister
+    nextRegister = sweepCalculation(register, sweep)
+    if nextRegister > 0x7FF or nextRegister < 0 then return nil end
+  end
+  return register
+end
+
+function Channel:sampleDrum(event, sampleIndex)
+  local index = event.drumSegmentIndex or 1
+  local segment = event.drum[index]
+  while segment and sampleIndex >= segment.endSample do
+    index = index + 1
+    segment = event.drum[index]
+  end
+  if not segment or sampleIndex < segment.startSample then return 0 end
+  if event.drumSegmentIndex ~= index then
+    event.drumSegmentIndex = index
+    self:resetNoise()
+  end
+  local elapsed = (sampleIndex - segment.startSample) / SAMPLE_RATE
+  local volume = envelopeVolume(segment.volume, segment.fade, elapsed)
+  return self:sampleNoise(segment.parameter) * volume / 15 * 0.35
+end
+
+function Channel:sample()
+  while not self.ended
+      and (not self.event or self.event.sample >= self.event.samples) do
+    self.event = self:nextEvent()
+    self.phase = 0
+    self:resetNoise()
+  end
+  local event = self.event
+  if not event then return 0 end
+  local sampleIndex = event.sample
+  event.elapsed = sampleIndex / SAMPLE_RATE
+  event.sample = sampleIndex + 1
+  if event.silence then return 0 end
+
+  if event.drum then return self:sampleDrum(event, sampleIndex) end
+  local volume = envelopeVolume(
+    event.volume or 0, event.fade or 0, event.elapsed)
+  if event.noise then
+    return self:sampleNoise(event.noiseParameter) * volume / 15 * 0.35
+  end
+
+  local register = event.register
+  local frame = math.floor(event.elapsed * 60)
+  if event.sweep then
+    register = sweptRegister(register, event.sweep, event.elapsed)
+    if not register then return 0 end
+  elseif event.slide then
+    local amount = math.min(1, frame / event.slide.frames)
+    register = register + (event.slide.target - register) * amount
+  elseif event.vibrato and frame >= event.vibrato.delay then
+    local vibrato = event.vibrato
+    local toggles = math.floor(
+      (frame - vibrato.delay + 1) / (vibrato.rate + 1))
+    if toggles > 0 then
+      local low = bit.band(register, 0xFF)
+      local high = bit.band(register, 0x700)
+      if bit.band(toggles, 1) ~= 0 then
+        register = high + math.min(0xFF, low + vibrato.above)
+      else
+        register = high + math.max(0, low - vibrato.below)
+      end
+    end
+  end
+  local frequency = 131072 / (2048 - math.min(register, 2047))
+  if event.wave then frequency = frequency * 0.5 end
+  local phase = self.phase
+  self.phase = (phase + frequency / SAMPLE_RATE) % 1
+  if event.wave then
+    local wave = self.engine.waves[
+      math.min(event.waveInstrument + 1, #self.engine.waves)]
+    -- a def-local program may omit its wave table entirely
+    if not wave then return 0 end
+    local index = math.min(32, math.floor(phase * 32) + 1)
+    return wave[index] * event.waveLevel * 0.55
+  end
+  local duty = event.duty
+  if type(duty) == "table" then
+    duty = duty[frame % 4 + 1]
+  end
+  return (phase < duty and 1 or -1) * volume / 15 * 0.5
+end
+
+local Engine = {}
+Engine.__index = Engine
+
+function Engine:noiseInstrument(number)
+  -- a def-local drum wins over the ROM engine's table for that id
+  local custom = self.customDrums and self.customDrums[number]
+  if custom then return custom end
+  local cached = self.noiseInstruments[number]
+  if cached then return cached end
+
+  local header = self.noiseHeaders[tostring(number)]
+  local segments = {}
+  if header then
+    local spec = headerChannels(self.banks, header)[1]
+    local address = spec and spec.address
+    local ticks = 0
+    for _ = 1, 64 do
+      local command = romByte(self.banks, header.bank, address)
+      address = address + 1
+      if command == 0xFF then break end
+      if command < 0x20 or command >= 0x30 then
+        error(("unsupported drum command %02X at %02X:%04X")
+          :format(command, header.bank, address - 1))
+      end
+      local packed = romByte(self.banks, header.bank, address)
+      local parameter = romByte(self.banks, header.bank, address + 1)
+      address = address + 2
+      local duration = (bit.band(command, 0x0F) + 1) * FRAME_TICKS
+      segments[#segments + 1] = {
+        startSample = snapTicks(ticks),
+        endSample = snapTicks(ticks + duration),
+        volume = bit.rshift(packed, 4),
+        fade = fadeValue(bit.band(packed, 0x0F)),
+        parameter = parameter,
+      }
+      ticks = ticks + duration
+    end
+  end
+
+  self.noiseInstruments[number] = segments
+  return segments
+end
+
+local function readWaves(banks, audio, engineNumber)
+  local spec = audio.waveBanks[tostring(engineNumber)]
+  local waves = {}
+  for wave = 0, 4 do
+    local values = {}
+    for byteIndex = 0, 15 do
+      local packed = romByte(
+        banks, spec.bank, spec.address + wave * 16 + byteIndex)
+      values[#values + 1] = (bit.rshift(packed, 4) - 7.5) / 7.5
+      values[#values + 1] = (bit.band(packed, 0x0F) - 7.5) / 7.5
+    end
+    waves[#waves + 1] = values
+  end
+  local values = {}
+  for byteIndex = 0, 15 do
+    local packed = romByte(
+      banks, spec.bank, spec.address + 5 * 16 + byteIndex)
+    values[#values + 1] = (bit.rshift(packed, 4) - 7.5) / 7.5
+    values[#values + 1] = (bit.band(packed, 0x0F) - 7.5) / 7.5
+  end
+  for _ = 1, 4 do waves[#waves + 1] = values end
+  return waves
+end
+
+-- def-local waves are authored either as raw 0-15 nibbles (the ROM's own
+-- units) or as the -1..1 samples readWaves produces; the synth wants the
+-- latter
+local function normalizeWaves(source)
+  local waves = {}
+  for index, values in ipairs(source) do
+    local nibbles = false
+    for _, value in ipairs(values) do
+      if value > 1 or value < -1 then nibbles = true break end
+    end
+    local wave = {}
+    for position, value in ipairs(values) do
+      wave[position] = nibbles and (value - 7.5) / 7.5 or value
+    end
+    waves[index] = wave
+  end
+  return waves
+end
+
+function Engine.new(data, header, options)
+  options = options or {}
+  local audio = data.audio or {}
+  -- shape dispatch: a def-local chip program supplies its own channels and
+  -- may supply its own waves/drums, falling back to a ROM engine's tables
+  local chip = header.chip
+  local banks = engineBanks(data, chip)
+  local engineNumber = chip and (chip.engine or 1) or header.engine
+  local waves
+  if chip and chip.waves then
+    waves = normalizeWaves(chip.waves)
+  elseif chip then
+    local ok, romWaves = pcall(readWaves, banks, audio, engineNumber)
+    waves = ok and romWaves or {}
+  else
+    waves = readWaves(banks, audio, engineNumber)
+  end
+  local engine = setmetatable({
+    banks = banks,
+    tempo = 0x100,
+    pan = 0xFF,
+    waves = waves,
+    noiseHeaders = audio.noiseHeaders
+      and audio.noiseHeaders[tostring(engineNumber)] or {},
+    customDrums = chip and chip.drums or nil,
+    noiseInstruments = {},
+    channels = {},
+  }, Engine)
+  for _, spec in ipairs(chip and chip.channels
+      or headerChannels(banks, header)) do
+    local frameTicks = options.frameTicks
+    local hardware = (spec.number - 1) % 4 + 1
+    if hardware == 4 then
+      frameTicks = FRAME_TICKS
+    elseif options.cryLength then
+      frameTicks = 0x80 + options.cryLength
+    end
+    engine.channels[#engine.channels + 1] = Channel.new(engine, spec, {
+      bank = chip and 0 or header.bank,
+      sfx = options.sfx,
+      allowLoops = options.allowLoops,
+      frequencyOffset = options.frequencyOffset,
+      frameTicks = frameTicks,
+    })
+  end
+  return engine
+end
+
+function Engine:finished()
+  for _, channel in ipairs(self.channels) do
+    if not channel.ended or channel.event then return false end
+  end
+  return true
+end
+
+function Engine:sample()
+  local value = 0
+  for _, channel in ipairs(self.channels) do value = value + channel:sample() end
+  return math.max(-1, math.min(1, value * 0.5))
+end
+
+function Engine:sampleStereo()
+  local left, right = 0, 0
+  for _, channel in ipairs(self.channels) do
+    local value = channel:sample()
+    local event = channel.event
+    if not event or event.panLeft ~= false then left = left + value end
+    if not event or event.panRight ~= false then right = right + value end
+  end
+  return math.max(-1, math.min(1, left * 0.5)),
+    math.max(-1, math.min(1, right * 0.5))
+end
+
+function Engine:sampleChannel(number)
+  local selected = 0
+  for _, channel in ipairs(self.channels) do
+    local value = channel:sample()
+    if channel.number == number then selected = value end
+  end
+  return math.max(-1, math.min(1, selected * 0.5))
+end
+
+-- render `samples` frames into a fresh SoundData (mono or stereo).  love.sound
+-- is available on worker threads, so this is the hand-off unit the worker
+-- produces and the main thread queues.
+local function soundData(engine, samples, channels)
+  local result = love.sound.newSoundData(samples, SAMPLE_RATE, 16, channels)
+  for index = 0, samples - 1 do
+    if channels == 2 then
+      local left, right = engine:sampleStereo()
+      result:setSample(index, 1, left)
+      result:setSample(index, 2, right)
+    else
+      result:setSample(index, engine:sample())
+    end
+  end
+  return result
+end
+
+-- Render a one-shot effect (SFX/cry) to a mono SoundData, or nil when it is
+-- too short to be audible.  The caller wraps it in a static love.audio.Source
+-- (a playback concern, hence not done here).
+local function renderEffectData(data, header, options)
+  if not header then return nil end
+  options = options or {}
+  options.sfx = true
+  options.allowLoops = false
+  local engine = Engine.new(data, header, options)
+  local maximum = SAMPLE_RATE * 5
+  local values = {}
+  local count = 0
+  while count < maximum and not engine:finished() do
+    count = count + 1
+    values[count] = engine:sample()
+  end
+  if count < math.floor(SAMPLE_RATE / 100) then return nil end
+  local result = love.sound.newSoundData(count, SAMPLE_RATE, 16, 1)
+  for index = 1, count do result:setSample(index - 1, values[index]) end
+  return result
+end
+
+ChipSynth.newEngine = Engine.new
+ChipSynth.soundData = soundData
+ChipSynth.renderEffectData = renderEffectData
+
+return ChipSynth

src/core/FixedStep.lua

@@ -27,4 +27,12 @@ function FixedStep:update(dt)
   end
 end
 
+-- Drop any pending catch-up steps.  A hitch inside one logic step (map
+-- seam setMap / song start) makes the next real-time dt huge; without this
+-- the while-loop above would advance many walk frames before the next
+-- draw, which looks like a slide with no leg animation (issue #93).
+function FixedStep:discardCatchup()
+  self.accum = 0
+end
+
 return FixedStep

src/core/FrameCap.lua

@@ -0,0 +1,72 @@
+-- Render frame-rate cap.  With a driver control panel forcing
+-- vsync off, the 160x144 game is trivially cheap and love.run will present
+-- thousands of frames a second; over hours that cooks the graphics driver
+-- until a restart, and it wastes power whenever the window is left open in
+-- the background.  A hard cap bounds the present rate.  Render-only: game
+-- logic is fixed-step off dt (src/core/FixedStep.lua), so pacing present()
+-- changes nothing about timing, audio, or determinism.
+--
+-- Persisted as save.options.fpsCap; applied from OptionsMenu and on boot
+-- via Game:applyOptions.  main.lua's love.run reads FrameCap.current each
+-- frame for its sleep budget.  The module never touches love.timer itself,
+-- so it stays safe under the headless test stub.
+
+local FrameCap = {}
+
+-- Selectable steps: the normal framerate stops between the floor and the
+-- ceiling.  STEPS[1] == MIN and STEPS[#STEPS] == MAX, so the nearest-step
+-- snap in normalize doubles as the clamp.  Cycling past the last wraps.
+FrameCap.STEPS = { 30, 40, 50, 60, 75, 90, 100, 120, 144, 160 }
+FrameCap.MIN = 30
+FrameCap.MAX = 160
+FrameCap.DEFAULT = 60
+
+-- The live cap the run loop paces to.  Defaults so the launcher and the
+-- save editor are paced before any save applies its stored option.
+FrameCap.current = FrameCap.DEFAULT
+
+-- Nearest valid step for an arbitrary value (a hand-edited options.lua or
+-- an old save with no fpsCap key), so a bad number degrades to something
+-- sane; nil / non-numbers fall back to the default.  A value below MIN or
+-- above MAX snaps to that end, since MIN/MAX are the first/last steps.
+function FrameCap.normalize(value)
+  value = tonumber(value)
+  if not value then return FrameCap.DEFAULT end
+  local best, bestDiff = FrameCap.DEFAULT, math.huge
+  for _, step in ipairs(FrameCap.STEPS) do
+    local diff = math.abs(step - value)
+    if diff < bestDiff then best, bestDiff = step, diff end
+  end
+  return best
+end
+
+-- plain numeric text for the options row (e.g. "60")
+function FrameCap.label(value)
+  return tostring(FrameCap.normalize(value))
+end
+
+-- cycle to the next/previous step, wrapping (the options row idiom)
+function FrameCap.cycle(value, dir)
+  local steps = FrameCap.STEPS
+  local snapped = FrameCap.normalize(value)
+  local cur = 1
+  for i, step in ipairs(steps) do
+    if step == snapped then cur = i break end
+  end
+  local nextIdx = (cur - 1 + (dir or 1)) % #steps + 1
+  return steps[nextIdx]
+end
+
+-- Store the chosen cap as the live value the run loop paces to.  Never
+-- touches love.timer, so it is safe headless -- the loop just reads the
+-- number back.  Returns the normalized value it stored.
+function FrameCap.apply(value)
+  FrameCap.current = FrameCap.normalize(value)
+  return FrameCap.current
+end
+
+function FrameCap.applyOptions(opts)
+  FrameCap.apply(opts and opts.fpsCap)
+end
+
+return FrameCap

src/core/Game.lua

@@ -17,7 +17,7 @@ local Game = {}
 
 -- dev-mode gate for the F5/backtick hotkeys; false keeps every src/dev
 -- module unloaded, so a player boot never touches a byte of dev code
-local devMode = os.getenv("POKEPORT_DEV") == "1"
+local devMode = os.getenv("POKEPORT_DEV") == "1" or _G.POKEPORT_DEV_MODE == true
 
 -- the boot screen ids (field.boot.screens); a plain function so the
 -- headless harness can borrow makeTitleState onto a stub game
@@ -99,7 +99,12 @@ end
 -- total conversion overrides.  Threaded into SaveData so persistence stays
 -- free of a Data dependency.
 function Game:bootConfig()
-  return self.data and self.data.field and self.data.field.boot
+  local boot = self.data and self.data.field and self.data.field.boot
+  -- stamp the running game version onto the boot config so a New Game records
+  -- it (SaveData.newGame reads boot.version); this is what routes a Blue
+  -- playthrough to save_blue.lua and Blue's version-gated content
+  if boot then boot.version = require("src.core.GameVersion").get() end
+  return boot
 end
 
 -- the title screen with its NEW GAME / CONTINUE wiring; used at boot
@@ -194,6 +199,13 @@ function Game:update(dt)
   -- frame dt (not the fixed logic step) for a smooth ~0.25s glide.
   require("src.render.Tilt").update(dt)
   pcall(function() require("src.core.DiscordPresence").update(dt) end)
+  -- Steady-state memory backstop: advance the incremental collector one
+  -- small step every rendered frame.  The heavy GPU objects are now freed
+  -- explicitly (map eviction, battle exit, canvas/renderer swaps), so this
+  -- only has to keep ordinary Lua-heap garbage (per-frame tables/closures)
+  -- from drifting upward over a long session, and to spread collection out
+  -- so the default lazy schedule never batches it into a visible pause.
+  if collectgarbage then collectgarbage("step", 1) end
 end
 
 -- render.zones' identity default: unhooked, the zone list reaches the blit
@@ -283,10 +295,22 @@ function Game:keypressed(key)
     self:zoomStep(1)
     return
   elseif key == "2" then
-    -- cycle COLORS (GBC / OG / OG INV / GBC INV / CLASSIC); always on
-    local PaletteFX = require("src.render.PaletteFX")
-    self.save.options.colors = PaletteFX.cycleMode()
-    self:writeOptions()
+    -- cycle COLORS (GBC / OG / OG INV / GBC INV / CLASSIC); the pack change
+    -- forces Game.overworld:reloadMap, which rebuilds the live NPC array, so
+    -- hold it while a warp/transition or an on-screen scripted cutscene is
+    -- driving the overworld rather than tear the escort's NPCs out mid-move
+    local ow = self.overworld
+    local top = self.stack:top()
+    local busy = ow and (ow.transitioning
+      or (top == ow and (
+           (ow.runner and ow.runner.isRunning and ow.runner:isRunning())
+        or (ow.scriptMoves and #ow.scriptMoves > 0)
+        or ow.engaging or ow.emote)))
+    if not busy then
+      local PaletteFX = require("src.render.PaletteFX")
+      self.save.options.colors = PaletteFX.cycleMode()
+      self:writeOptions()
+    end
     return
   elseif key == "3" then
     -- cycle TILT OFF → 15 → 35 → 50 → OFF (mnemonic: 3D), free-roam only
@@ -298,7 +322,9 @@ function Game:keypressed(key)
     return
   elseif key == "5" then
     -- cycle GBC FX OFF → 1 → 2 → 3 → 4 (unlit-GBC ladder); always on
+    -- desktop.  Mobile refuses the present shader (issue #136).
     local GBCFX = require("src.render.GBCFX")
+    if not GBCFX.isSupported() then return end
     self.save.options.gbcfx = GBCFX.cycle()
     self:writeOptions()
     return
@@ -337,6 +363,28 @@ function Game:gamepadaxis(joystick, axis, value)
   Input:gamepadaxis(joystick, axis, value)
 end
 
+-- Window focus/visibility flips: a release due while unfocused/hidden can
+-- be swallowed by the OS. Reset on both edges -- gaining focus with a
+-- physically held key won't re-fire keypressed, so trusting leftover
+-- state is worse than asking the player to re-press.
+function Game:focus(f)
+  Input:reset()
+  TouchInput:reset()
+end
+
+function Game:visible(v)
+  Input:reset()
+  TouchInput:reset()
+end
+
+-- A disconnected/dropped controller can't send the button-up for whatever
+-- it was holding, so drop all input state rather than try to guess which
+-- flags it owned.
+function Game:joystickremoved(joystick)
+  Input:reset()
+  TouchInput:reset()
+end
+
 function Game:touchpressed(id, x, y)
   TouchInput:touchpressed(id, x, y)
 end
@@ -397,8 +445,15 @@ function Game:applyOptions(opts)
   if Sound.applyOptions then Sound.applyOptions(opts) end
   require("src.render.PaletteFX").applyOptions(opts)
   require("src.render.Tilt").applyOptions(opts)
-  require("src.render.GBCFX").applyOptions(opts)
+  -- returns true when a persisted GBC FX level was cleared on mobile
+  local gbcCleared = require("src.render.GBCFX").applyOptions(opts)
   require("src.core.VideoMode").applyOptions(opts)
+  -- normalizes a nil/garbage cap to the 60 default, so old saves with no
+  -- fpsCap key pace at the standard rate (issue #88)
+  require("src.core.FrameCap").applyOptions(opts)
+  Input:applyBindings(opts.bindings)
+  -- heal soft-bricked APK installs that already saved gbcfx > 0 (#136)
+  if gbcCleared then self:writeOptions() end
 end
 
 function Game:restoreSave(loaded, recovered)
@@ -410,6 +465,13 @@ function Game:restoreSave(loaded, recovered)
   -- SaveData.load and skip on the format guard
   local activeMods = self.modStatus and self.modStatus.loaded
   SaveData.runMigrations(loaded, self.mods and self.mods.migrations, activeMods)
+  -- Issue #103: 0.1.11 softlocks left CONTINUE in HALL_OF_FAME with
+  -- lastOutdoor on Indigo.  One-shot relocate + heal before validate.
+  if SaveData.needsPostGameRescue(loaded) then
+    SaveData.applyPostGameHome(loaded, self:bootConfig())
+    local Pokemon = require("src.pokemon.Pokemon")
+    for _, mon in ipairs(loaded.party or {}) do Pokemon.heal(mon) end
+  end
   local modsDiff = SaveData.modsDiff(loaded, activeMods)
   local report = SaveData.validate(loaded, self.data)
   report.recovered = recovered

src/core/GameVersion.lua

@@ -0,0 +1,77 @@
+-- Which Gen-1 game this process is running: Red (the historical default) or
+-- Blue.  One source of truth for everything that differs by version -- the
+-- accepted ROM hash, the import manifest, where the extracted cache lives,
+-- and the save-file suffix -- so the importer, cache mount, SaveData, title
+-- screen and palette all agree.
+--
+-- Red keeps every un-suffixed path it always used (save.lua, the root cache),
+-- so existing installs are untouched; Blue is namespaced under blue/ and
+-- _blue so both can be imported and played side by side.
+--
+-- Zero requires, so it loads during love.conf and under plain Lua for tools
+-- and tests.  The active version is a process-global set once at boot from
+-- the launcher's column choice (main.lua); it defaults to Red.
+
+local GameVersion = {}
+
+GameVersion.VERSIONS = {
+  red = {
+    id = "red",
+    label = "Red",
+    displayName = "Pokemon Red",
+    sha1 = "ea9bcae617fdf159b045185467ae58b2e4a48b9a",
+    manifest = "tools/rom_manifest.json",
+    cachePrefix = "",       -- Red owns the cache root (backwards compatible)
+    saveSuffix = "",        -- save.lua / save.lua.bak / save.lua.tmp
+  },
+  blue = {
+    id = "blue",
+    label = "Blue",
+    displayName = "Pokemon Blue",
+    sha1 = "d7037c83e1ae5b39bde3c30787637ba1d4c48ce2",
+    manifest = "tools/rom_manifest_blue.json",
+    cachePrefix = "blue/",  -- blue/data/generated, blue/assets/generated
+    saveSuffix = "_blue",   -- save_blue.lua / .bak / .tmp
+  },
+}
+
+-- Launcher column order (Yellow is still a placeholder, handled by the UI).
+GameVersion.ORDER = { "red", "blue" }
+
+GameVersion.current = "red"
+
+function GameVersion.set(id)
+  GameVersion.current = GameVersion.VERSIONS[id] and id or "red"
+  return GameVersion.current
+end
+
+function GameVersion.get()
+  return GameVersion.current
+end
+
+function GameVersion.isBlue()
+  return GameVersion.current == "blue"
+end
+
+-- Metadata for a version id, defaulting to the active one.
+function GameVersion.info(id)
+  return GameVersion.VERSIONS[id or GameVersion.current]
+end
+
+function GameVersion.saveSuffix(id)
+  return GameVersion.info(id).saveSuffix
+end
+
+function GameVersion.cachePrefix(id)
+  return GameVersion.info(id).cachePrefix
+end
+
+-- The version a ROM belongs to, by its SHA-1, or nil for an unknown ROM.
+function GameVersion.forSha1(sha1)
+  for id, info in pairs(GameVersion.VERSIONS) do
+    if info.sha1 == sha1 then return id end
+  end
+  return nil
+end
+
+return GameVersion

src/core/Input.lua

@@ -3,7 +3,7 @@
 
 local Input = {}
 
-local BINDINGS = {
+local DEFAULT_BINDINGS = {
   up = "up", w = "up",
   down = "down", s = "down",
   left = "left", a = "left",
@@ -11,15 +11,23 @@ local BINDINGS = {
   z = "a", ["return"] = "a", space = "a",
   x = "b", backspace = "b",
   ["kpenter"] = "start", escape = "start",
+  -- Select: fight-menu move reorder + bag item reorder. Tab is the
+  -- discoverable default (shown in CONTROLS); both shifts stay as
+  -- aliases so Right-Shift muscle memory from older builds still works.
+  tab = "select",
   rshift = "select",
+  lshift = "select",
 }
 
 -- keys that map to "start" but also to "a" would conflict; keep Enter = a,
 -- Escape = start for desktop friendliness.
 
 -- LÖVE's standard gamepad mapping (SDL game controller DB), consistent
--- across Xbox/PlayStation/generic controllers on desktop and mobile.
-local GAMEPAD_BINDINGS = {
+-- across Xbox/PlayStation/generic controllers on desktop and mobile. Some
+-- third-party pads report their own SDL mapping for a given physical
+-- button (e.g. Select/Back/View on off-brand XInput pads), which is what
+-- src/ui/BindingsMenu.lua's rebinding is for -- see applyBindings below.
+local DEFAULT_GAMEPAD_BINDINGS = {
   dpup = "up", dpdown = "down", dpleft = "left", dpright = "right",
   a = "a", b = "b",
   start = "start", back = "select",
@@ -32,48 +40,131 @@ local STICK_ON = 0.5
 local STICK_OFF = 0.3
 
 function Input:init()
+  self:applyBindings(nil)
+  self:reset()
+end
+
+-- Layers a player's rebind choices (save.options.bindings, written by
+-- src/ui/BindingsMenu.lua) on top of the defaults above. A rebind adds an
+-- extra way to trigger that action instead of replacing the default key,
+-- so e.g. Z/Enter/Space all still press A even after binding a 4th key to
+-- it. Call whenever options load or change (see Game:applyOptions and
+-- BindingsMenu:storeBinding) -- without this the menu records a choice
+-- that never actually reaches gameplay.
+function Input:applyBindings(overlay)
+  local keys, pads = {}, {}
+  for key, action in pairs(DEFAULT_BINDINGS) do keys[key] = action end
+  for button, action in pairs(DEFAULT_GAMEPAD_BINDINGS) do pads[button] = action end
+  for actionId, binding in pairs(overlay or {}) do
+    if type(binding) == "table" then
+      if binding.key then keys[binding.key] = actionId end
+      if binding.pad then pads[binding.pad] = actionId end
+    elseif type(binding) == "string" then
+      keys[binding] = actionId
+    end
+  end
+  self.keyBindings = keys
+  self.padBindings = pads
+end
+
+-- Purely event-driven state (press sets true, release sets false) has no
+-- fallback if a release event never arrives -- focus loss, a minimized
+-- window, or a disconnected gamepad can all swallow the key-up/button-up
+-- that would have cleared a held direction. Called from Game on those
+-- transitions so a stuck flag can't outlive them.
+function Input:reset()
   self.state = {}
   self.pressQueue = {}
   self.pressed = {}
+  self.sources = {}
   self.stickAxis = { x = 0, y = 0 }
   self.stickDir = nil
 end
 
-function Input:keypressed(key)
-  local btn = BINDINGS[key]
-  if btn then
+-- Multiple physical sources (W + Up, d-pad + stick, etc.) can claim the
+-- same GB button. Track them individually so releasing one doesn't clear
+-- a hold another source still owns, and so a press+release that both land
+-- before the next FixedStep can't be revived when step() drains the queue.
+local function press(self, btn, source)
+  local sources = self.sources[btn]
+  if not sources then
+    sources = {}
+    self.sources[btn] = sources
+  end
+  if not sources[source] then
+    sources[source] = true
     table.insert(self.pressQueue, btn)
   end
+  self.state[btn] = true
 end
 
-function Input:keyreleased(key)
-  local btn = BINDINGS[key]
-  if btn then
+local function release(self, btn, source)
+  local sources = self.sources[btn]
+  if sources then
+    sources[source] = nil
+    if next(sources) == nil then
+      -- Leave an empty table (not nil) so step() can tell a real
+      -- source was released before the queue drained, versus a
+      -- synthetic pressQueue inject that never had sources at all.
+      self.state[btn] = false
+    end
+  else
     self.state[btn] = false
   end
 end
 
+function Input:keypressed(key)
+  local btn = self.keyBindings[key]
+  if btn then
+    press(self, btn, "key:" .. key)
+  end
+end
+
+function Input:keyreleased(key)
+  local btn = self.keyBindings[key]
+  if btn then
+    release(self, btn, "key:" .. key)
+  end
+end
+
 -- Called once per fixed step: promote queued presses to this step's edges.
+-- Hold state is owned by live sources (updated in press/release), not
+-- re-asserted here -- otherwise a same-frame press→release leaves the
+-- button stuck on after the queue drains.
+-- Synthetic injects (tests/drivers writing pressQueue directly, with no
+-- source entry) still set state so scripted holds keep working.
 function Input:step()
   self.pressed = {}
   for _, btn in ipairs(self.pressQueue) do
     self.pressed[btn] = true
-    self.state[btn] = true
+    local sources = self.sources[btn]
+    if sources == nil then
+      -- synthetic pressQueue inject (tests/drivers): no live source map
+      self.state[btn] = true
+    elseif next(sources) ~= nil then
+      self.state[btn] = true
+    end
+    -- sources == {}: real press fully released before this step — keep up
+  end
+  for btn, sources in pairs(self.sources) do
+    if next(sources) == nil then
+      self.sources[btn] = nil
+    end
   end
   self.pressQueue = {}
 end
 
 function Input:gamepadpressed(joystick, button)
-  local btn = GAMEPAD_BINDINGS[button]
+  local btn = self.padBindings[button]
   if btn then
-    table.insert(self.pressQueue, btn)
+    press(self, btn, "pad:" .. button)
   end
 end
 
 function Input:gamepadreleased(joystick, button)
-  local btn = GAMEPAD_BINDINGS[button]
+  local btn = self.padBindings[button]
   if btn then
-    self.state[btn] = false
+    release(self, btn, "pad:" .. button)
   end
 end
 
@@ -103,10 +194,10 @@ function Input:gamepadaxis(joystick, axis, value)
 
   if newDir ~= self.stickDir then
     if self.stickDir then
-      self.state[self.stickDir] = false
+      release(self, self.stickDir, "stick")
     end
     if newDir then
-      table.insert(self.pressQueue, newDir)
+      press(self, newDir, "stick")
     end
     self.stickDir = newDir
   end

src/core/Music.lua

@@ -114,6 +114,7 @@ local SPECIAL = {
   oakRoute = "Music_Routes2",
   bike = "Music_BikeRiding",
   surf = "Music_Surfing",
+  evolution = "Music_SafariZone",
 }
 
 -- the label a scene role resolves to; call sites keep their own presence
@@ -253,6 +254,7 @@ function Music.stop()
   require("src.core.ChipAudio").stopMusic()
   state.current, state.source, state.loopSource, state.fade = nil, nil, nil, nil
   state.chip = false
+  state.pendingRestore = nil
   if previous and Runtime.wants("music.stopped") then
     Runtime.emit("music.stopped", { song = previous })
   end
@@ -346,18 +348,25 @@ end
 function Music.playOnce(data, song)
   if not songDef(data, song) then return false end
   Music.play(data, song, false, { reason = "once" })
+  -- play() can no-op (hook silence, failed def); only arm restore when
+  -- the jingle actually became current
+  if state.current ~= song then return false end
   state.pendingRestore = true
   return true
 end
 
--- is a playOnce jingle still sounding?  (AnimateHealingMachine's
--- .waitLoop2 holds the healing machine until MUSIC_PKMN_HEALED ends)
+local function chipAwaitingFirstBuffer()
+  return state.chip
+     and require("src.core.ChipAudio").awaitingFirstBuffer()
+end
+
+-- is a playOnce jingle still in flight?  (AnimateHealingMachine's
+-- .waitLoop2 / Mom heal / captain rub hold until MUSIC_PKMN_HEALED ends.)
+-- pendingRestore stays set from playOnce until Music.update restores the
+-- map theme, covering the threaded chip "empty QueueableSource" window
+-- where Source:isPlaying is briefly false before the first buffer lands.
 function Music.oneShotPlaying()
-  if not state.pendingRestore then return false end
-  local src = state.source
-  if not src then return false end
-  local ok, playing = pcall(src.isPlaying, src)
-  return ok and playing or false
+  return state.pendingRestore == true
 end
 
 function Music.restoreMap(data)
@@ -440,8 +449,10 @@ function Music.update(data)
     state.source = loopSrc
     pcall(loopSrc.play, loopSrc)
   end
+  -- do not treat "threaded source still waiting on its first buffer" as
+  -- ended, or playOnce jingles get restored over before they can sound
   if state.pendingRestore and sourceStopped(state.source)
-     and not state.loopSource then
+     and not state.loopSource and not chipAwaitingFirstBuffer() then
     Music.restoreMap(data)
   end
 end

src/core/SaveData.lua

@@ -18,14 +18,157 @@ local Semver = require("src.mods.Semver")
 local Boxes = require("src.pokemon.Boxes")
 local Bag = require("src.inventory.Bag")
 
+local GameVersion = require("src.core.GameVersion")
+
 local SaveData = {}
 
-local FILENAME = "save.lua"
+-- Progress files carry the game-version suffix so Red and Blue saves coexist:
+-- Red keeps save.lua / .bak / .tmp exactly as before; Blue is save_blue.lua
+-- (+ .bak/.tmp).  options.lua is deliberately shared across versions (it holds
+-- global preferences and the mod enable-state, not per-playthrough data).
 local OPTIONS_FILENAME = "options.lua"
--- one rolling backup plus the staged-write witness; load promotes either
--- when the main file is missing or fails to parse
-local BACKUP_FILENAME = FILENAME .. ".bak"
-local TMP_FILENAME = FILENAME .. ".tmp"
+
+-- Main / backup / staged-witness names for a version (defaults to the active
+-- one).  The backup is a rolling copy and .tmp is the staged-write witness;
+-- load promotes either when the main file is missing or fails to parse.
+local function saveNames(version)
+  local main = "save" .. GameVersion.saveSuffix(version) .. ".lua"
+  return main, main .. ".bak", main .. ".tmp"
+end
+
+-- The main save filename for a version -- used by the title screen's
+-- CONTINUE gate so it looks for the right game's save.
+function SaveData.saveFilename(version)
+  local main = saveNames(version)
+  return main
+end
+
+-- ------- portable mode
+-- LÖVE's save directory is always the OS per-user path derived from the
+-- identity (conf.lua), so it can't be relocated at runtime. Portable mode
+-- instead drops a plain-Lua io.* filesystem next to the game whenever a
+-- `portable.txt` marker sits beside the executable/source, letting a USB
+-- copy carry its own save.lua/options.lua (and, through options.lua, the
+-- mod enable-state) rather than leaving them on the host machine.
+local PORTABLE_MARKER = "portable.txt"
+local SEP = package.config:sub(1, 1)
+
+local portableChecked = false
+local portableBase = false      -- resolved base dir when active, else false
+local portableFsCache = nil
+
+local function pathExists(path)
+  local f = io.open(path, "rb")
+  if not f then return false end
+  f:close()
+  return true
+end
+
+-- an io.* filesystem exposing the love.filesystem subset the save/options
+-- round-trip needs (getInfo/read/write/remove), rooted at `dir`
+local function makePortableFs(dir)
+  local function full(name) return dir .. SEP .. name end
+  return {
+    getInfo = function(name)
+      if not pathExists(full(name)) then return nil end
+      return { type = "file" }
+    end,
+    read = function(name)
+      local f = io.open(full(name), "rb")
+      if not f then return nil, "no file: " .. name end
+      local data = f:read("*a")
+      f:close()
+      return data
+    end,
+    write = function(name, data)
+      local f, err = io.open(full(name), "wb")
+      if not f then return false, err end
+      f:write(data)
+      f:close()
+      return true
+    end,
+    remove = function(name)
+      os.remove(full(name))
+      return true
+    end,
+  }
+end
+
+local function detectPortable()
+  if portableChecked then return portableBase end
+  portableChecked = true
+  portableBase = false
+  if not (love and love.filesystem) then return false end
+  -- Desktop only: portable mode carries the save (and, since issue #74, the
+  -- ROM cache) in the game folder next to the executable/source.  On
+  -- Android/iOS the source is a read-only package with no such folder, so
+  -- portable mode never applies there.
+  if love.system and love.system.getOS then
+    local osName = love.system.getOS()
+    if osName ~= "Windows" and osName ~= "Linux" and osName ~= "OS X" then
+      return false
+    end
+  end
+  local src = love.filesystem.getSource and love.filesystem.getSource()
+  local sbd = love.filesystem.getSourceBaseDirectory
+    and love.filesystem.getSourceBaseDirectory()
+  -- A packaged macOS build nests the game inside gen1recomp.app/Contents/
+  -- Resources, so getSource()/getSourceBaseDirectory() point INSIDE the
+  -- bundle -- not where the player drops portable.txt (next to the .app).
+  -- Recover the folder containing the .app so a packaged app finds its
+  -- marker.  On Windows/Linux the executable is not a bundle, so this is nil
+  -- and the plain source-base directory (next to the .exe/AppImage) is used.
+  local function appContainer(path)
+    local appPath = path and path:match("^(.*%.app)/Contents/")
+    return appPath and appPath:match("^(.*)/[^/]+$") or nil
+  end
+  -- Order: the .app's containing folder (packaged macOS), then the
+  -- source-base directory (next to a packaged .exe/AppImage), then the
+  -- source itself (a `love <gamedir>` run drops portable.txt in the game
+  -- folder).  First one holding the marker wins.  Built by appending so a
+  -- nil (e.g. no .app in the path) never truncates the ipairs scan.
+  local candidates = {}
+  local appDir = appContainer(src) or appContainer(sbd)
+  if appDir then candidates[#candidates + 1] = appDir end
+  if sbd then candidates[#candidates + 1] = sbd end
+  if src then candidates[#candidates + 1] = src end
+  for _, base in ipairs(candidates) do
+    if base ~= "" and pathExists(base .. SEP .. PORTABLE_MARKER) then
+      portableBase = base
+      break
+    end
+  end
+  return portableBase
+end
+
+function SaveData.isPortable()
+  return detectPortable() ~= false
+end
+
+-- the raw portable-folder path (for callers building their own nested
+-- paths, e.g. the ROM-derived asset cache), or nil when portable mode
+-- is off
+function SaveData.portableBaseDir()
+  return detectPortable() or nil
+end
+
+-- the io.* filesystem for the active portable folder, or nil when off
+function SaveData.portableFs()
+  local base = detectPortable()
+  if not base then return nil end
+  if not portableFsCache then portableFsCache = makePortableFs(base) end
+  return portableFsCache
+end
+
+-- Resolve the filesystem a persistent read/write should land on: an
+-- explicitly injected non-love fs (headless tests, the mod loader's stub)
+-- always wins; otherwise portable mode reroutes off the OS save directory.
+local function persistFs(fs)
+  if fs and love and love.filesystem and fs ~= love.filesystem then
+    return fs
+  end
+  return SaveData.portableFs() or fs or (love and love.filesystem)
+end
 
 -- Port + original Options menu defaults.  Missing keys on load are filled
 -- from this table so old options.lua files stay compatible.
@@ -49,6 +192,8 @@ function SaveData.defaultOptions()
     gbcfx = 0,
     -- windowed | borderless (desktop fullscreen); ignored on mobile
     videoMode = "windowed",
+    -- hard render frame-rate cap; render-only pacing (issue #88, FrameCap.lua)
+    fpsCap = 60,
     -- Native mod enablement is an installation option, not save-slot data.
     -- Missing entries mean enabled so newly installed mods work by default.
     mods = {},
@@ -94,7 +239,7 @@ end
 -- love.filesystem, so the mod loader's injected filesystem can carry the
 -- options round-trip headless (no love global).
 function SaveData.saveOptions(opts, fs)
-  fs = fs or love.filesystem
+  fs = persistFs(fs)
   opts = SaveData.mergeOptions(opts)
   -- modOptions is per-mod nested state: fold the on-disk sub-tree
   -- underneath (newest value winning per key) so one caller's partial
@@ -123,7 +268,7 @@ function SaveData.saveOptions(opts, fs)
 end
 
 function SaveData.loadOptions(fs)
-  fs = fs or love.filesystem
+  fs = persistFs(fs)
   local data, err = readTable(fs, OPTIONS_FILENAME)
   if not data then
     if fs.getInfo(OPTIONS_FILENAME) then
@@ -311,7 +456,7 @@ end)
 -- afterwards either way
 SaveData.addCoreMigration(1, function(save)
   if type(save.options) == "table"
-      and not love.filesystem.getInfo(OPTIONS_FILENAME) then
+      and not persistFs(nil).getInfo(OPTIONS_FILENAME) then
     SaveData.saveOptions(save.options)
   end
 end)
@@ -322,6 +467,36 @@ SaveData.addCoreMigration(1, function(save)
   Boxes.ensure(save)
 end)
 
+-- game version (Red vs Blue) prep: saves written before Blue support
+-- existed carry no `version` tag, and Red is the only game that ever
+-- shipped, so default every untagged save to Red.  from=2 so it catches
+-- every pre-bump save (format 1 and 2) and is skipped once re-stamped to
+-- the current format.
+SaveData.addCoreMigration(2, function(save)
+  if not save.version then
+    save.version = "red"
+  end
+end)
+
+-- #131 / follow-up to #50: Game Corner poster grunt used to stay on the
+-- floor after defeat (defeatedTrainers only).  The #50 script now hides
+-- him via objectToggles, but saves that already beat him never got the
+-- toggle -- he still blocks the hideout switch.  from=3 so every pre-4
+-- save reconciles once, then is skipped after re-stamp.
+SaveData.addCoreMigration(3, function(save)
+  local defeated = save.defeatedTrainers
+  if not defeated or not defeated["GAME_CORNER_obj_11"] then return end
+  save.objectToggles = save.objectToggles or {}
+  local mapToggles = save.objectToggles.GAME_CORNER
+  if not mapToggles then
+    mapToggles = {}
+    save.objectToggles.GAME_CORNER = mapToggles
+  end
+  if mapToggles.GAMECORNER_ROCKET ~= false then
+    mapToggles.GAMECORNER_ROCKET = false
+  end
+end)
+
 -- ------- write
 
 -- Game progress only; options are written separately via saveOptions.
@@ -331,6 +506,9 @@ end)
 -- itself rolls the last good save into .bak and stages the new bytes as
 -- a .tmp witness before the swap, so a crash mid-write is recoverable.
 function SaveData.save(data, mods)
+  -- write to the file matching this save's own version, not just the active
+  -- one, so a Blue playthrough always lands in save_blue.lua
+  local FILENAME, BACKUP_FILENAME, TMP_FILENAME = saveNames(data.version)
   if data.options then
     SaveData.saveOptions(data.options)
   end
@@ -342,7 +520,7 @@ function SaveData.save(data, mods)
     if k ~= "options" then gameOnly[k] = v end
   end
   local encoded = SaveSerializer.encode(gameOnly)
-  local fs = love.filesystem
+  local fs = persistFs(nil)
   if fs.getInfo(FILENAME) then
     local prev = fs.read(FILENAME)
     if prev then fs.write(BACKUP_FILENAME, prev) end
@@ -370,8 +548,11 @@ end
 -- returns the parsed save plus "tmp"/"bak" when the main file was gone
 -- or corrupt and a staged/backup copy was promoted; Game surfaces the
 -- recovery on the load report
-function SaveData.load()
-  local fs = love.filesystem
+function SaveData.load(version)
+  -- version defaults to the active game (set at boot from the launcher);
+  -- an explicit version lets callers/tests load a specific game's save.
+  local FILENAME, BACKUP_FILENAME, TMP_FILENAME = saveNames(version)
+  local fs = persistFs(nil)
   local data, err = readTable(fs, FILENAME)
   local recovered
   if not data then
@@ -651,6 +832,36 @@ function SaveData.defaultHeal(boot)
   return { map = map, x = boot.startX or 3, y = boot.startY or 6 }
 end
 
+-- Post-credits home (issue #103).  pokered left the player in HALL_OF_FAME
+-- after jp Init; this port places CONTINUE at the NewGameWarp bedroom and
+-- retargets LAST_MAP exits (Red's house mats) at the heal-point town so
+-- leaving the house does not dump the player back at Indigo Plateau.
+-- Marks postGameHomeOk so a later intentional HoF save is not relocated.
+function SaveData.applyPostGameHome(save, boot)
+  boot = type(boot) == "table" and boot or {}
+  local heal = SaveData.defaultHeal(boot)
+  save.lastHeal = { map = heal.map, x = heal.x, y = heal.y }
+  save.lastOutdoor = { id = heal.map, x = heal.x, y = heal.y }
+  save.player = save.player or {}
+  save.player.map = boot.startMap or "REDS_HOUSE_2F"
+  save.player.x = boot.startX or 3
+  save.player.y = boot.startY or 6
+  save.player.facing = boot.startFacing or "down"
+  save.postGameHomeOk = true
+  return heal
+end
+
+-- Softlocked 0.1.11 saves: still standing in HALL_OF_FAME after credits,
+-- with lastOutdoor on Indigo.  One-shot rescue on CONTINUE.
+function SaveData.needsPostGameRescue(save)
+  if not (save and save.player and save.player.map == "HALL_OF_FAME") then
+    return false
+  end
+  if save.postGameHomeOk then return false end
+  local hof = save.hallOfFame
+  return type(hof) == "table" and #hof > 0
+end
+
 function SaveData.newGame(boot)
   boot = type(boot) == "table" and boot or {}
   local map = boot.startMap or "REDS_HOUSE_2F"
@@ -658,6 +869,9 @@ function SaveData.newGame(boot)
   local heal = SaveData.defaultHeal(boot)
   local save = {
     meta = { format = Version.saveFormat, mods = {} },
+    -- which game this playthrough is (Red vs Blue).  Only Red ships today;
+    -- boot carries the choice once Blue support lands.
+    version = boot.version or "red",
     player = {
       map = map,
       x = x,
@@ -671,6 +885,10 @@ function SaveData.newGame(boot)
     },
     flags = {},
     inventory = {},
+    -- Vanilla Gen1 seeds one Potion in the player's item PC
+    -- (wBoxItems / players_pc.asm); existing saves keep whatever they
+    -- already have — this only applies to New Game.
+    pcItems = { POTION = 1 },
     party = {},
     box = {},
     money = boot.startMoney or 3000,

src/core/TouchInput.lua

@@ -48,7 +48,7 @@ local KEY = {
   a = "z",
   b = "x",
   start = "escape",
-  select = "rshift",
+  select = "tab",
 }
 
 local function nowMs()
@@ -75,6 +75,21 @@ function TouchInput:init()
   self.selectFired = false     -- one SELECT per two-finger gesture cluster
 end
 
+-- LÖVE has no touchcancelled event, so a touch interrupted by the OS (app
+-- backgrounded mid-touch, a system gesture stealing the finger) never fires
+-- touchreleased and would otherwise strand its direction held forever.
+-- Called from Game alongside Input:reset() on focus/visibility loss.
+function TouchInput:reset()
+  for _, touch in pairs(self.touches) do
+    releaseDir(self, touch)
+  end
+  self.touches = {}
+  self.pendingA = nil
+  self.armed = {}
+  self.autoRelease = {}
+  self.selectFired = false
+end
+
 local function pulse(self, key)
   Input:keypressed(key)
   self.armed[#self.armed + 1] = key

src/core/Version.lua

@@ -7,13 +7,13 @@ local Version = {
   engine = "1.0.0",       -- game/engine release (semver triple)
   modApi = 2,             -- mod API major (manifest `api`)
   linkProtocol = 2,       -- link handshake wire version (Handshake.PROTOCOL)
-  saveFormat = 2,         -- save.meta.format
+  saveFormat = 4,         -- save.meta.format
   cache = "rom-cache-v5", -- ROM import cache generation (RomImporter marker)
 }
 
--- "Pokemon Red (Gen 1 Recompilation Project) v1.0.0"
+-- "gen1recomp v1.0.0"
 function Version.title(base)
-  return (base or "Pokemon Red (Gen 1 Recompilation Project)")
+  return (base or "gen1recomp")
     .. " v" .. Version.engine
 end
 

src/core/chip_worker.lua

@@ -0,0 +1,96 @@
+-- ChipAudio synthesis worker (love.thread).  Runs the Game Boy audio synth
+-- (src/core/ChipSynth.lua) off the main thread so a map/battle song change
+-- never stutters the render thread: filling the ~6s playback queue from
+-- scratch is ~200ms of Lua synthesis, and this is where it now happens.
+--
+-- Protocol -- main thread pushes command tables onto the "chipaudio_cmd"
+-- channel and drains produced buffers off "chipaudio_out":
+--   cmd = "play"  { gen, header, allowLoops, audio }  start a song
+--   cmd = "stop"                                       halt production
+--   cmd = "invalidate"                                 drop the bank cache
+--   cmd = "quit"                                        end the thread
+-- out buffers are tagged with the play's `gen` so the main thread can
+-- discard anything left over from a superseded song:
+--   { gen, sd = SoundData }   one rendered buffer
+--   { gen, done = true }      the song ended (non-looping jingle finished)
+--   { gen, error = msg }      build/synth failed; main logs and gives up
+
+require("love.thread")
+require("love.timer")
+require("love.sound")
+require("love.filesystem")
+
+-- Load the synth explicitly via love.filesystem (a fresh thread Lua state does
+-- not necessarily carry the package searcher that resolves "src.core..."):
+local ChipSynth = assert(love.filesystem.load("src/core/ChipSynth.lua"))()
+
+local cmdCh = love.thread.getChannel("chipaudio_cmd")
+local outCh = love.thread.getChannel("chipaudio_out")
+
+local BUF = ChipSynth.MUSIC_BUFFER_SAMPLES
+-- how many finished buffers may sit in the hand-off channel before the worker
+-- pauses.  The deep (~6s) playback depth lives in the main-thread Source; this
+-- only bounds the worker's look-ahead (and its memory) between drains.
+local LOOKAHEAD = 8
+
+local gen = nil        -- active song generation, or nil when stopped
+local engine = nil     -- the ChipSynth engine producing the current song
+local finished = false -- the current song ran out (non-looping)
+local data = nil       -- { audio = <slim audio tables> } for ROM bank/wave reads
+
+local function handle(cmd)
+  if cmd.cmd == "play" then
+    gen = cmd.gen
+    finished = false
+    engine = nil
+    outCh:clear() -- drop any buffers left from the previous song
+    data = { audio = cmd.audio }
+    local ok, eng = pcall(ChipSynth.newEngine, data, cmd.header,
+                          { allowLoops = cmd.allowLoops })
+    if ok then
+      engine = eng
+    else
+      outCh:push({ gen = gen, error = tostring(eng) })
+      finished = true
+    end
+  elseif cmd.cmd == "stop" then
+    gen = nil
+    engine = nil
+    finished = false
+    outCh:clear()
+  elseif cmd.cmd == "invalidate" then
+    ChipSynth.invalidateBanks()
+  elseif cmd.cmd == "quit" then
+    return true
+  end
+  return false
+end
+
+while true do
+  -- drain every pending command first, so a stop/new-play is seen promptly
+  local quit = false
+  local cmd = cmdCh:pop()
+  while cmd do
+    if handle(cmd) then quit = true end
+    cmd = cmdCh:pop()
+  end
+  if quit then break end
+
+  if engine and not finished and gen and outCh:getCount() < LOOKAHEAD then
+    local activeGen = gen
+    local ok, sd = pcall(ChipSynth.soundData, engine, BUF, 2)
+    if not ok then
+      outCh:push({ gen = activeGen, error = tostring(sd) })
+      finished = true
+    else
+      outCh:push({ gen = activeGen, sd = sd })
+      if engine:finished() then
+        outCh:push({ gen = activeGen, done = true })
+        finished = true
+      end
+    end
+  else
+    -- nothing to do (idle, or the look-ahead is full): yield the core
+    love.timer.sleep(0.001)
+  end
+end

src/import/CacheFs.lua

@@ -0,0 +1,283 @@
+-- Routes ROM-derived cache I/O (data/generated, assets/generated and the
+-- rom-cache.complete marker) to the right place.
+--
+-- Normally the cache lives in LÖVE's per-user OS save directory and is
+-- written through love.filesystem.  In portable mode it lives in the game
+-- folder next to the executable instead (the folder holding portable.txt --
+-- see SaveData), so nothing is left on the host machine.  That folder is
+-- written with raw io.* (love.filesystem can only write to the save dir) and
+-- read back through love.filesystem, require and love.graphics.newImage --
+-- which works because the folder is on the physfs read path:
+--
+--   * Source runs (`love <gamedir>`, what the Play-* launchers use): the
+--     folder IS the physfs source, so it is already readable.
+--   * Fused builds (the packaged .app/.exe): the folder sits next to the
+--     executable and is NOT normally readable, so CacheFs mounts it onto the
+--     read path via PhysFS.  love.filesystem.mount refuses external folders,
+--     but the underlying PHYSFS_mount (exported from love's framework) allows
+--     them; we call it through LuaJIT's FFI.
+--
+-- Directories in the portable folder are created with a plain mkdir syscall
+-- via FFI rather than os.execute, so importing never flashes a console window
+-- on Windows (issue #74 -- the old per-file `os.execute("mkdir")` froze the
+-- app behind a storm of one-frame cmd.exe windows).
+--
+-- Portable mode is desktop-only (Windows/Linux/macOS); on Android/iOS the
+-- source is a read-only package with no game folder to write into, so
+-- SaveData.isPortable() is false there and this module falls back to the
+-- ordinary love.filesystem/save-directory behaviour.
+
+local CacheFs = {}
+
+local SEP = package.config:sub(1, 1)
+
+-- Cache-relative paths are prefixed with this before every read/write, so a
+-- Blue import lands in blue/ (see src.core.GameVersion) while a Red import
+-- keeps the historical root.  The launcher sets it per import / per readiness
+-- check; it stays "" for Red.  Runtime *reads* (require / newImage) do NOT go
+-- through here -- CacheFs.mountVersion overlays the active version's subtree
+-- onto the un-prefixed paths instead.
+CacheFs.prefix = ""
+
+local function withPrefix(rel)
+  local p = CacheFs.prefix
+  if p == nil or p == "" then return rel end
+  return p .. rel
+end
+
+-- lazily-resolved windowless mkdir: function(absolutePath) or false when
+-- FFI is unavailable (the cache then stays on the save directory)
+local mkdirFn = nil
+
+local function resolveMkdir()
+  if mkdirFn ~= nil then return mkdirFn end
+  mkdirFn = false
+  local ok, ffi = pcall(require, "ffi")
+  if not ok then return mkdirFn end
+  if ffi.os == "Windows" then
+    -- kernel32 is reliably resolvable through ffi.C on Windows (the engine
+    -- already binds it in DiscordPresence); CreateDirectoryA returns
+    -- nonzero on success and 0 when the directory already exists -- both
+    -- fine, the result is ignored.
+    pcall(ffi.cdef,
+      "int CreateDirectoryA(const char *lpPathName, void *lpSecurityAttributes);")
+    local resolved = pcall(function() return ffi.C.CreateDirectoryA end)
+    if resolved then
+      mkdirFn = function(path) pcall(ffi.C.CreateDirectoryA, path, nil) end
+    end
+  else
+    pcall(ffi.cdef, "int mkdir(const char *pathname, unsigned int mode);")
+    local resolved = pcall(function() return ffi.C.mkdir end)
+    if resolved then
+      mkdirFn = function(path) pcall(ffi.C.mkdir, path, 493) end -- 0755
+    end
+  end
+  return mkdirFn
+end
+
+-- Mount an external directory onto the physfs read path (appended, so the
+-- game's own source always wins a name clash).  Returns true on success.
+--
+-- PHYSFS_mount is exported by love's own binary.  How ffi finds it differs
+-- per platform: on macOS/Linux the symbol is in the default namespace, so
+-- ffi.C resolves it; on Windows it lives in love.dll, which ffi.C does NOT
+-- search, so love.dll is loaded explicitly with ffi.load("love").  Try the
+-- default first, then love.
+local physfsMountFn = nil
+local function resolveMount()
+  if physfsMountFn ~= nil then return physfsMountFn end
+  physfsMountFn = false
+  local ok, ffi = pcall(require, "ffi")
+  if not ok then return physfsMountFn end
+  pcall(ffi.cdef,
+    "int PHYSFS_mount(const char *newDir, const char *mountPoint, int appendToPath);")
+  local libs = {
+    function() return ffi.C end,
+    function() return ffi.load("love") end,
+  }
+  for _, getlib in ipairs(libs) do
+    local okl, lib = pcall(getlib)
+    if okl and lib then
+      local oks, fn = pcall(function() return lib.PHYSFS_mount end)
+      if oks and fn then
+        physfsMountFn = function(d, append)
+          if append == nil then append = true end
+          local okr, ret = pcall(fn, d, "", append and 1 or 0)
+          return okr and ret ~= 0
+        end
+        break
+      end
+    end
+  end
+  return physfsMountFn
+end
+
+-- append (default true): the game's own source wins a name clash, matching
+-- how the portable cache root has always been mounted.  Pass false to
+-- prepend, so the mounted tree wins -- used to overlay the active version's
+-- cache on top of the root (Red) copy and the source.
+local function mountReadable(dir, append)
+  local fn = resolveMount()
+  if not fn then return false end
+  return fn(dir, append)
+end
+
+-- The portable game folder when the cache should live there, else nil.
+-- Resolved (and, for a fused build, mounted) once and cached.  Requires a
+-- desktop portable install (SaveData) and a working windowless mkdir.
+local portableRoot = nil
+local portableResolved = false
+local function resolvePortableRoot()
+  if portableResolved then return portableRoot end
+  portableResolved = true
+  portableRoot = nil
+  if not resolveMkdir() then return nil end
+  local base = require("src.core.SaveData").portableBaseDir()
+  if not base then return nil end
+  if love.filesystem.getSource and base == love.filesystem.getSource() then
+    -- source run: the folder is already the physfs source
+    portableRoot = base
+  elseif mountReadable(base) then
+    -- fused build: base is next to the executable; mount it so io.* writes
+    -- there are visible to love.filesystem/require/newImage
+    portableRoot = base
+  end
+  return portableRoot
+end
+
+function CacheFs.root()
+  return resolvePortableRoot()
+end
+
+local function realPath(root, rel)
+  return root .. SEP .. rel:gsub("/", SEP)
+end
+
+-- create every parent directory of `rel` under `root` (best effort; an
+-- already-existing directory is fine, a genuine failure surfaces when the
+-- subsequent io.open write fails)
+local function ensureParents(root, rel)
+  local mkdir = resolveMkdir()
+  if not mkdir then return end
+  local parts = {}
+  for part in rel:gmatch("[^/]+") do parts[#parts + 1] = part end
+  local cur = root
+  for i = 1, #parts - 1 do
+    cur = cur .. SEP .. parts[i]
+    mkdir(cur)
+  end
+end
+
+-- write cache-relative `rel` (forward-slash path) with the given bytes;
+-- returns ok, err like love.filesystem.write
+function CacheFs.write(rel, data)
+  rel = withPrefix(rel)
+  local root = CacheFs.root()
+  if root then
+    ensureParents(root, rel)
+    local f, err = io.open(realPath(root, rel), "wb")
+    if not f then return false, err end
+    f:write(data)
+    f:close()
+    return true
+  end
+  local parent = rel:match("^(.*)/[^/]+$")
+  if parent and not love.filesystem.createDirectory(parent) then
+    local info = love.filesystem.getInfo(parent)
+    local reason = info and ("a " .. info.type .. " already exists there")
+      or "unknown reason"
+    return false, "could not create " .. parent .. ": " .. reason
+  end
+  return love.filesystem.write(rel, data)
+end
+
+-- read cache-relative `rel`; returns the bytes or nil
+function CacheFs.read(rel)
+  rel = withPrefix(rel)
+  local root = CacheFs.root()
+  if root then
+    local f = io.open(realPath(root, rel), "rb")
+    if not f then return nil end
+    local data = f:read("*a")
+    f:close()
+    return data
+  end
+  return love.filesystem.read(rel)
+end
+
+-- does cache-relative `rel` exist as a file?
+function CacheFs.exists(rel)
+  rel = withPrefix(rel)
+  local root = CacheFs.root()
+  if root then
+    local f = io.open(realPath(root, rel), "rb")
+    if not f then return false end
+    f:close()
+    return true
+  end
+  return love.filesystem.getInfo(rel, "file") ~= nil
+end
+
+-- remove a single cache-relative file
+function CacheFs.remove(rel)
+  rel = withPrefix(rel)
+  local root = CacheFs.root()
+  if root then
+    os.remove(realPath(root, rel))
+    return
+  end
+  love.filesystem.remove(rel)
+end
+
+-- Remove the game-folder copy of a cache subtree before a fresh import, so a
+-- cache-format bump does not leave orphaned files behind.  No-op when the
+-- portable cache is inactive (the save-directory copy is cleared by
+-- RomImporter's own removeTree).  The tree is enumerated through
+-- love.filesystem (the game folder is mounted) and the real files deleted
+-- with os.remove; empty directories are harmless and left in place.
+function CacheFs.removeTree(rel)
+  rel = withPrefix(rel)
+  local root = CacheFs.root()
+  if not root then return end
+  local function walk(r)
+    local info = love.filesystem.getInfo(r)
+    if not info then return end
+    if info.type == "directory" then
+      for _, child in ipairs(love.filesystem.getDirectoryItems(r)) do
+        walk(r .. "/" .. child)
+      end
+    else
+      os.remove(realPath(root, r))
+    end
+  end
+  walk(rel)
+end
+
+-- Overlay the active version's extracted cache onto the un-prefixed read
+-- paths, so require("data.generated.*") and love.graphics.newImage(
+-- "assets/generated/*") resolve to that version's files.  Red lives at the
+-- cache root and needs nothing; Blue lives under blue/ and is *prepended* so
+-- it wins over any Red copy at the root and over the game source.  Called
+-- once at boot, before Game:load (main.lua).  Returns true when nothing was
+-- needed or the mount succeeded.
+function CacheFs.mountVersion(version)
+  local prefix = require("src.core.GameVersion").cachePrefix(version)
+  if prefix == "" then return true end            -- Red: already at the root
+  local sub = prefix:gsub("/+$", "")              -- "blue/" -> "blue"
+  -- The cache root is the portable game folder when active, else LÖVE's OS
+  -- save directory (where love.filesystem wrote blue/...).
+  local base = CacheFs.root()
+  if not base and love.filesystem.getSaveDirectory then
+    base = love.filesystem.getSaveDirectory()
+  end
+  if not base then return false end
+  if mountReadable(base .. SEP .. sub, false) then return true end
+  -- Fallback when FFI/PHYSFS_mount is unavailable: LÖVE can mount a folder
+  -- that lives in the save directory by name (prepended: appendToPath=false).
+  if love.filesystem.mount then
+    return love.filesystem.mount(sub, "", false)
+  end
+  return false
+end
+
+return CacheFs

src/import/ImageWriter.lua

@@ -126,14 +126,14 @@ function ImageWriter.columnsToRows(raw, tilesWide, tilesHigh, bytesPerTile)
 end
 
 function ImageWriter.save(image, path)
-  local parent = path:match("^(.*)/[^/]+$")
-  if parent then
-    local ok, err = love.filesystem.createDirectory(parent)
-    if not ok then error("could not create " .. parent .. ": " .. tostring(err)) end
-  end
   local ok, fileData = pcall(image.encode, image, "png")
   if not ok then error("could not encode " .. path .. ": " .. tostring(fileData)) end
-  local written, writeError = love.filesystem.write(path, fileData)
+  -- CacheFs routes this to the OS save directory (normal builds) or straight
+  -- into the game folder (portable installs), creating parent directories as
+  -- needed.  io.* needs the bytes as a string; love.filesystem would also
+  -- take the FileData, but getString() keeps one code path.
+  local CacheFs = require("src.import.CacheFs")
+  local written, writeError = CacheFs.write(path, fileData:getString())
   if not written then
     error("could not write " .. path .. ": " .. tostring(writeError))
   end

src/import/LuaWriter.lua

@@ -87,12 +87,11 @@ function LuaWriter.encode(value)
 end
 
 function LuaWriter.write(path, value)
-  local parent = path:match("^(.*)/[^/]+$")
-  if parent then
-    local ok, err = love.filesystem.createDirectory(parent)
-    if not ok then error("could not create " .. parent .. ": " .. tostring(err)) end
-  end
-  local ok, err = love.filesystem.write(path, LuaWriter.encode(value))
+  -- CacheFs routes this to the OS save directory (normal builds) or straight
+  -- into the game folder (portable installs); it also creates the parent
+  -- directories.  See src/import/CacheFs.lua.
+  local CacheFs = require("src.import.CacheFs")
+  local ok, err = CacheFs.write(path, LuaWriter.encode(value))
   if not ok then error("could not write " .. path .. ": " .. tostring(err)) end
 end
 

src/import/RomExtractor.lua

@@ -1253,14 +1253,24 @@ function RomExtractor:extractTrainers()
         "battle/trainers/" .. picture.imageBase .. ".png")
       written[picture.imageBase] = true
     end
+    local parties = self:trainerParties(
+      pointers.bank, partyStarts[index], partyEnds[index])
+    -- ChiefData is empty in the ROM (the Celadon Chief battle is unused/
+    -- cut content); tools/rom_manifest.json carries a hand-authored party
+    -- for the trainers this project reimplements, since no ROM data exists
+    -- to extract for them.
+    if #parties == 0 then
+      local override = self.manifest.trainerPartyOverrides
+        and self.manifest.trainerPartyOverrides[trainerId]
+      if override then parties = { copy(override) } end
+    end
     out[trainerId] = {
       id = trainerId, index = index, name = decodedNames[index],
       source = "ROM:TrainerDataPointers",
       pic = picture and picture.path or nil,
       baseMoney = math.floor(Rom.bcd(rawMoney) / 100),
       aiMods = aiMods[index],
-      parties = self:trainerParties(
-        pointers.bank, partyStarts[index], partyEnds[index]),
+      parties = parties,
     }
     self:tick("Trainers", index, #order)
   end
@@ -1426,7 +1436,7 @@ end
 
 function RomExtractor:extractField()
   self:beginStage("Interface artwork")
-  local done, total = 0, 48
+  local done, total = 0, 49
   local function tick()
     done = done + 1
     self:tick("Interface artwork", math.min(done, total), total)
@@ -1576,6 +1586,34 @@ function RomExtractor:extractField()
       "fx/" .. spec[4], { transparent = true })
     tick()
   end
+
+  -- The cuttable tree's own sprite: InitCutAnimOAM (engine/overworld/cut.asm)
+  -- copies Overworld_GFX tiles $2d-$2e (top half) and $3d-$3e (bottom half)
+  -- into the OAM tiles the Cut animation slides apart, so this comes out of
+  -- the OVERWORLD tileset's own graphics blob rather than a named symbol.
+  do
+    local overworldIndex
+    for i, name in ipairs(self.manifest.constants.tilesetOrder) do
+      if name == "OVERWORLD" then overworldIndex = i break end
+    end
+    assert(overworldIndex, "OVERWORLD tileset not found in tilesetOrder")
+    local tilesetHeaders = self:symbol("Tilesets")
+    local rowAddress = tilesetHeaders.address + (overworldIndex - 1) * 12
+    local gfxBank = self.rom:byte(tilesetHeaders.bank, rowAddress)
+    local gfxPointer = self.rom:word(tilesetHeaders.bank, rowAddress + 3)
+    local cutTree = ImageWriter.blank(16, 16, 1, 1, 1, 0)
+    for _, spec in ipairs({
+      { 0x2d, 0, 0 }, { 0x2e, 8, 0 }, { 0x3d, 0, 8 }, { 0x3e, 8, 8 },
+    }) do
+      local tileIndex, dx, dy = spec[1], spec[2], spec[3]
+      local tile = ImageWriter.decode2bpp(
+        self.rom:bytes(gfxBank, gfxPointer + tileIndex * 16, 16),
+        8, 8, true)
+      ImageWriter.blit(cutTree, tile, dx, dy)
+    end
+    self:save(cutTree, "fx/cut_tree.png"); tick()
+  end
+
   self:raw2bpp("BattleTransitionTile", 8, 8,
     "fx/battle_transition.png"); tick()
   self:raw2bpp("PokedexTileGraphics", 24, 48,
@@ -1631,10 +1669,11 @@ function RomExtractor:extractAudio()
     chunks[index] = self.rom.data:sub(first, first + 0x3FFF)
     self:tick("Sound programs", index, #bankOrder + 2)
   end
-  local ok, writeError = love.filesystem.createDirectory(
-    "assets/generated/audio")
-  if ok == false then error("could not create audio cache: " .. tostring(writeError)) end
-  ok, writeError = love.filesystem.write(
+  -- CacheFs (not love.filesystem directly) so a portable install lands this
+  -- in the game folder with the rest of the cache; it creates the parent
+  -- directory too.
+  local CacheFs = require("src.import.CacheFs")
+  local ok, writeError = CacheFs.write(
     "assets/generated/audio/programs.bin", table.concat(chunks))
   if not ok then error("could not write audio programs: " .. tostring(writeError)) end
 

src/inventory/Bag.lua

@@ -11,6 +11,10 @@ local function isBadge(id)
   return id:find("BADGE", 1, true) ~= nil
 end
 
+-- exported so item lists that share save.inventory (e.g. the PC deposit
+-- menu) can exclude badges the same way the bag does
+Bag.isBadge = isBadge
+
 function Bag.slots(save)
   local n = 0
   for id in pairs(save.inventory) do

src/link/LinkBattle.lua

@@ -36,18 +36,13 @@ local function makeRng(seed)
   end
 end
 
--- battler builder shared by both sides -- NO badge boosts, so both
--- machines compute identical stats
+-- Battlers go through BattleState.makeBattler so pics get the same
+-- Assets.resolve + SGB/GBC palette + padBottom path as wild/trainer
+-- battles.  save=nil skips badge boosts so both machines keep identical
+-- stats (Gen 1 cable battles famously kept badges; we still diverge).
 local function mkBattler(data, mon, isPlayer)
-  local def = data.pokemon[mon.species]
-  local ok, img = pcall(love.graphics.newImage,
-                        isPlayer and def.spriteBack or def.spriteFront)
-  return {
-    mon = mon, def = def, isPlayer = isPlayer, stages = {},
-    name = mon.nickname or def.name,
-    curStats = mon.stats, curTypes = def.types, curMoves = mon.moves,
-    sprite = ok and img or nil,
-  }
+  local BattleState = require("src.battle.BattleState")
+  return BattleState.makeBattler(data, mon, isPlayer, nil)
 end
 
 -- canonical (host-side-first) state hash, unchanged since v1: it stays on
@@ -213,6 +208,8 @@ function LinkBattle.new(game, net, opts)
   self.player = mkBattler(game.data, myParty[1], true)
   self.enemy = mkBattler(game.data, theirParty[1], false)
   self.enemyParty = theirParty
+  self.playerParty = myParty -- intro ball row uses the clamped copies
+  self.opponentName = theirName
   self.introText = ("%s wants\nto battle!"):format(theirName)
   self.remoteHashes = {}
   self.localHashes = {}
@@ -235,6 +232,43 @@ function LinkBattle.new(game, net, opts)
     return nil
   end
 
+  -- player-side SendOutMon (poof + grow-in + cry); mirrors BattleState
+  local function sendOutPlayer(s, mon)
+    local previous = s.player
+    s.player = mkBattler(game.data, mon, true)
+    s:syncSides()
+    Runtime.emit("battle.battler_switched", {
+      battle = s, side = s.sides[1], battler = s.player, previous = previous,
+    })
+    s.sendingOut = true
+    s:sayNext(s:sendOutText(s.player.name))
+    s:animNext("POOF_ANIM", false)
+    s:actNext(function()
+      s.sendingOut = false
+      s:startGrowIn(s.player)
+      require("src.core.Sound").playCry(s.data, s.player.mon.species)
+    end)
+  end
+
+  -- enemy-side EnemySendOut (grow-in + cry; no poof)
+  local function sendOutEnemy(s, mon)
+    local previous = s.enemy
+    s.enemy = mkBattler(game.data, mon, false)
+    s:syncSides()
+    Runtime.emit("battle.battler_switched", {
+      battle = s, side = s.sides[2], battler = s.enemy, previous = previous,
+    })
+    s.enemySendingOut = true
+    s:sayNext(("%s sent\nout %s!"):format(theirName, s.enemy.name))
+    s:actNext(function()
+      s.enemySendingOut = false
+      s:startGrowIn(s.enemy)
+      s:actNext(function()
+        require("src.core.Sound").playCry(s.data, s.enemy.mon.species)
+      end)
+    end)
+  end
+
   -- decode a remote action message against the enemy battler
   local function decodeTheirAction(s, msg)
     if msg.kind == "move" then
@@ -306,17 +340,11 @@ function LinkBattle.new(game, net, opts)
     -- switches happen before attacks (both may switch)
     if myMsg.kind == "switch" then
       local idx = myMsg.index
-      s:act(function()
-        s.player = mkBattler(game.data, myParty[idx], true)
-        s:sayNext(("Go! %s!"):format(s.player.name))
-      end)
+      s:act(function() sendOutPlayer(s, myParty[idx]) end)
       myAction = nil
     end
     if theirSwitch then
-      s:act(function()
-        s.enemy = mkBattler(game.data, theirParty[theirSwitch], false)
-        s:sayNext(("%s sent\nout %s!"):format(theirName, s.enemy.name))
-      end)
+      s:act(function() sendOutEnemy(s, theirParty[theirSwitch]) end)
     end
 
     s:act(function()
@@ -452,10 +480,7 @@ function LinkBattle.new(game, net, opts)
   self.playerMonFainted = function(s)
     for _, mon in ipairs(myParty) do
       if mon.hp > 0 then
-        s:act(function()
-          s.player = mkBattler(game.data, mon, true)
-          s:sayNext(("Go! %s!"):format(s.player.name))
-        end)
+        s:act(function() sendOutPlayer(s, mon) end)
         return
       end
     end
@@ -468,10 +493,7 @@ function LinkBattle.new(game, net, opts)
   self.enemyMonFainted = function(s)
     for _, mon in ipairs(theirParty) do
       if mon.hp > 0 then
-        s:act(function()
-          s.enemy = mkBattler(game.data, mon, false)
-          s:sayNext(("%s sent\nout %s!"):format(theirName, s.enemy.name))
-        end)
+        s:act(function() sendOutEnemy(s, mon) end)
         return
       end
     end

src/mods/Loader.lua

@@ -129,7 +129,9 @@ end
 -- tripwire on for tests that cannot set the environment.
 function Loader.new(opts)
   local dev = opts and opts.dev
-  if dev == nil then dev = os.getenv("POKEPORT_DEV") == "1" end
+  if dev == nil then
+    dev = os.getenv("POKEPORT_DEV") == "1" or _G.POKEPORT_DEV_MODE == true
+  end
   local self = setmetatable({
     mods = {}, loaded = {}, errors = {}, initialized = false,
     events = Events.new(), hooks = Hooks.new(), content = {}, assets = {},

src/mods/ManagerState.lua

@@ -18,6 +18,12 @@ ManagerState.isOpaque = true
 -- Game:keypressed recognizes a directly-pushed instance
 ManagerState.screenId = "ManagerState"
 
+-- Same as OptionsMenu: without this, title LOGO zones leak through when
+-- MODS is opened from the title-screen options path.
+function ManagerState:sgbPalettes(game)
+  return require("src.render.PaletteFX").wholeNamed(game.data, "MEWMON")
+end
+
 -- the charmap has no * ~ + < > glyphs, so the status gutter uses what it
 -- does have: staged-awaiting-restart, disabled, errored, dep-unhealthy
 local GLYPH = { staged = ".", disabled = "-", errored = "!", blocked = "?" }

src/mods/Schemas.lua

@@ -872,11 +872,15 @@ R.palettes = {
 }
 
 -- keyed by species id, unlike the vanilla byDex array: a species past the
--- end of the dex gets an icon without punching a hole in the list
+-- end of the dex gets an icon without punching a hole in the list. The party
+-- menu (src/ui/PartyMenu.lua) reads this per-species entry before the vanilla
+-- dex-indexed default. The value is a built-in icon NAME -- one of BALL, BIRD,
+-- BUG, FAIRY, GRASS, HELIX, MON, QUADRUPED, SNAKE, WATER (uppercase) -- or a
+-- { image = <bundled file path>, frames? } table of your own art.
 R.icons = {
   semantics = "record", target = "icons.bySpecies",
   value = f.union{ f.str, f.rec{ image = f.path, frames = f.opt(f.int(1)) } },
-  example = 'mod.content.icons:register("MISSINGNO", { image = "glitch.png" })',
+  example = 'mod.content.icons:register("MODMON", "QUADRUPED")  -- a built-in name, or { image = mod.assets:path("icon.png"), frames = 2 }',
 }
 
 -- glyph codes are not bytes: the vanilla pages sit at $60/$80 but a

src/pokemon/Evolution.lua

@@ -9,6 +9,7 @@
 -- "trade" | "manual" | <mod>, item = id?, ... }), wrapped by the
 -- evolution.check hook so a mod can cancel or force any evolution.
 
+local Music = require("src.core.Music")
 local Runtime = require("src.mods.Runtime")
 local Screens = require("src.ui.Screens")
 local Stats = require("src.pokemon.Stats")
@@ -112,11 +113,15 @@ function Evolution.evolve(game, mon, newSpecies, onDone, via)
     Screens.push(game, "EvolutionState", mon, newSpecies, onDone)
     return
   end
+  Music.play(game.data, Music.special(game.data, "evolution"))
   local oldName = mon.nickname or game.data.pokemon[mon.species].name
   Evolution.apply(game, mon, newSpecies, via)
   local msg = ("What?\n%s is\nevolving!\fCongratulations!\nYour %s\nevolved into\n%s!")
               :format(oldName, oldName, game.data.pokemon[newSpecies].name)
-  game.stack:push(TextBox.new(game, msg, onDone))
+  game.stack:push(TextBox.new(game, msg, function()
+    Music.restoreMap(game.data)
+    if onDone then onDone() end
+  end))
 end
 
 -- Entry point for mods whose methods fire outside the vanilla moments

src/pokemon/Pokemon.lua

@@ -9,12 +9,18 @@ local Pokemon = {}
 -- keeping the most recent four (engine/pokemon/learn_move.asm behavior).
 function Pokemon.movesAtLevel(speciesDef, level)
   local moves = {}
+  local function add(id)
+    for _, existing in ipairs(moves) do
+      if existing == id then return end
+    end
+    table.insert(moves, id)
+  end
   for _, m in ipairs(speciesDef.level1Moves) do
-    table.insert(moves, m)
+    add(m)
   end
   for _, entry in ipairs(speciesDef.learnset) do
     if entry.level <= level then
-      table.insert(moves, entry.move)
+      add(entry.move)
     end
   end
   while #moves > 4 do

src/render/Font.lua

@@ -148,6 +148,17 @@ function Font.advanceOf(code)
   return page and page.advance or GLYPH
 end
 
+-- Pixel width of a string (glyph advances, not UTF-8 byte length).
+-- Multi-byte charmap entries like "¥" are one glyph; callers that
+-- right-align with `#text * 8` mis-place them.
+function Font.width(text)
+  local w = 0
+  for _, code in ipairs(Font.encode(text)) do
+    w = w + Font.advanceOf(code)
+  end
+  return w
+end
+
 -- Draw a plain single-line string at pixel (x, y).  Returns the width
 -- drawn, which is #codes * 8 for every fixed-width page.
 function Font.draw(text, x, y)

src/render/GBCFX.lua

@@ -22,6 +22,15 @@ GBCFX.level = 0
 
 local shader -- false = unavailable (headless / no shader support)
 
+-- Mobile GPUs often compile this pass but present a black frame, and the
+-- level persists in options.lua -- soft-bricking the APK until a manual
+-- edit (issue #136).  Desktop is unchanged; Android/iOS refuse the effect.
+function GBCFX.isSupported()
+  if not love or not love.system or not love.system.getOS then return true end
+  local osName = love.system.getOS()
+  return osName ~= "Android" and osName ~= "iOS"
+end
+
 -- GLSL 1.20-compatible (no array initializers; wavelength terms and the
 -- shadow blur are unrolled by hand).
 local SHADER_SRC = [[
@@ -214,6 +223,7 @@ vec4 effect(vec4 color, Image tex, vec2 tc, vec2 pc)
 GBCFX.SHADER_SRC = SHADER_SRC -- exposed for the standalone compile check
 
 function GBCFX.shader()
+  if not GBCFX.isSupported() then return nil end
   if shader == nil then
     local ok, sh = pcall(love.graphics.newShader, SHADER_SRC)
     shader = ok and sh or false
@@ -222,6 +232,10 @@ function GBCFX.shader()
 end
 
 function GBCFX.setLevel(level)
+  if not GBCFX.isSupported() then
+    GBCFX.level = 0
+    return
+  end
   level = math.floor(tonumber(level) or 0)
   if level < 0 then level = 0 end
   if level > 4 then level = 4 end
@@ -230,12 +244,26 @@ end
 
 -- Advance OFF → 1 → 2 → 3 → 4 → OFF.  Returns the new level.
 function GBCFX.cycle()
+  if not GBCFX.isSupported() then
+    GBCFX.level = 0
+    return 0
+  end
   GBCFX.setLevel((GBCFX.level + 1) % 5)
   return GBCFX.level
 end
 
+-- Apply opts.gbcfx.  On unsupported platforms force OFF and clear a
+-- persisted non-zero value so boot recovers from a soft-brick.  Returns
+-- true when opts was sanitized (caller should persist options.lua).
 function GBCFX.applyOptions(opts)
+  if not GBCFX.isSupported() then
+    local had = opts and (tonumber(opts.gbcfx) or 0) ~= 0
+    if opts then opts.gbcfx = 0 end
+    GBCFX.level = 0
+    return had and true or false
+  end
   GBCFX.setLevel(opts and opts.gbcfx or 0)
+  return false
 end
 
 function GBCFX.levelLabel(level)
@@ -243,7 +271,7 @@ function GBCFX.levelLabel(level)
 end
 
 function GBCFX.active()
-  return GBCFX.level > 0 and GBCFX.shader() ~= nil
+  return GBCFX.isSupported() and GBCFX.level > 0 and GBCFX.shader() ~= nil
 end
 
 -- Draw `canvas` fullscreen through the GBC FX shader into the current

src/render/PaletteFX.lua

@@ -10,16 +10,23 @@
 -- RED++ swaps the named-palette pack for pokered-gbc SuperPalettes
 -- (data/palettes_gbc.lua), including per-species mon colors.
 
+local GameVersion = require("src.core.GameVersion")
+
 local PaletteFX = {}
 
 local shader -- false = unavailable (headless / no shader support)
 local gbcPack -- false = missing; nil = not loaded yet
 
--- Cycle order matches OptionsMenu / hotkey 2
-PaletteFX.MODES = { "gbc", "redpp", "og", "og_inv", "gbc_inv", "classic" }
+-- Cycle order matches OptionsMenu / hotkey 2.  The three real colorizations
+-- come first (OG RED = GBC hardware, SGB = per-map Super Game Boy, RED++ =
+-- pokered-gbc per-tile), then the DMG-shade novelty modes.
+PaletteFX.MODES = { "ogred", "gbc", "redpp", "og", "og_inv", "gbc_inv", "classic" }
+-- `gbc`/`gbc_inv` keep their save-value ids for back-compat; their LABELS are
+-- "SGB"/"SGB INV" because that is what the mode actually is (the old "GBC"
+-- label was a misnomer -- it never was the real Game Boy Color palette).
 PaletteFX.MODE_LABELS = {
-  gbc = "GBC", redpp = "RED++", og = "OG", og_inv = "OG INV",
-  gbc_inv = "GBC INV", classic = "CLASSIC",
+  ogred = "OG RED", gbc = "SGB", redpp = "RED++", og = "OG",
+  og_inv = "OG INV", gbc_inv = "SGB INV", classic = "CLASSIC",
 }
 PaletteFX.mode = "gbc"
 
@@ -28,6 +35,40 @@ PaletteFX.CLASSIC = {
   { 155, 188, 15 }, { 139, 172, 15 }, { 48, 98, 48 }, { 15, 56, 15 },
 }
 
+-- OG RED: the Game Boy Color boot-ROM auto-palette for Pokemon Red.  Pokemon
+-- Red ships no CGB code (pokered's wOnCGB is hardwired 0), so on a Game Boy
+-- Color the boot ROM colorizes it with ONE global palette pair -- a red
+-- background and green objects -- applied to the whole game with no per-map
+-- variation (that variety was the Super Game Boy's doing, i.e. SGB mode).
+-- Lightest shade first, matching the SGB palette tables.  Values verified
+-- against hardware captures of Pallet Town and Oak's Lab.
+PaletteFX.GBC_BG = {
+  { 255, 255, 255 }, { 255, 132, 132 }, { 148, 58, 58 }, { 0, 0, 0 },
+}
+PaletteFX.GBC_OBJ = {
+  { 255, 255, 255 }, { 123, 255, 49 }, { 0, 132, 0 }, { 0, 0, 0 },
+}
+
+-- OG BLUE: Pokemon Blue's Game Boy Color boot-ROM auto-palette.  Same
+-- one-global-pair scheme as OG RED (Blue also ships no CGB code), but the
+-- boot ROM colorizes the background blue instead of red -- so "OG RED" for a
+-- Blue playthrough is white -> light blue -> dark blue -> black, mirroring
+-- GBC_BG channel-for-channel so the blue reads at the same brightness.  The
+-- OBJ (sprite) palette stays the same green, matching how Red and Blue share
+-- the green-character look on a Game Boy Color.
+PaletteFX.GBC_BG_BLUE = {
+  { 255, 255, 255 }, { 132, 132, 255 }, { 58, 58, 148 }, { 0, 0, 0 },
+}
+
+-- The active game's OG boot-ROM background palette: blue for a Blue
+-- playthrough, red otherwise.  White (index 1) and black (index 4) are
+-- identical across versions, so callers that only touch the endpoints
+-- (e.g. BattleState's zone white/black snap) need no version branch.
+function PaletteFX.ogBg()
+  if GameVersion.isBlue() then return PaletteFX.GBC_BG_BLUE end
+  return PaletteFX.GBC_BG
+end
+
 local INV_MAP = { [0] = 3, [1] = 2, [2] = 1, [3] = 0 }
 
 function PaletteFX.shader()
@@ -141,6 +182,56 @@ function PaletteFX.usesGbcPack(mode)
   return mode == "redpp"
 end
 
+-- Whether the active mode bakes a per-OBJ palette onto overworld sprites
+-- (the OBP bake + post-zone redraw path).  ONLY OG RED does: it wears the
+-- GBC boot-ROM green object palette (PaletteFX.GBC_OBJ) so the player and
+-- NPCs stay green over the red background, exactly like Pokemon Red on a
+-- Game Boy Color.  SGB mode deliberately does NOT: an SGB OBJ carries no
+-- palette of its own, so the characters tint with the whole-map region
+-- palette along with the terrain (the Super Game Boy never colored Pokemon
+-- Red's sprites separately -- baking a per-sprite palette there was the
+-- "reds coloring on the player/NPCs" bug).  RED++ colors sprites through
+-- the usesGbcPack() path in SpriteRenderer instead.
+function PaletteFX.usesSpriteObp(mode)
+  return (mode or PaletteFX.mode) == "ogred"
+end
+
+-- ------- post-zone sprite redraw (GBC mode)
+--
+-- In GBC mode the world canvas still runs through the per-map zone
+-- shade-remap shader, which would corrupt an OBP-baked sprite's true-color
+-- pixels.  So SpriteRenderer draws the baked sprite into the canvas (its
+-- pixels come out zone-tinted there) AND records the draw here;
+-- Renderer:endFrame replays the list on top of the finished zone pass,
+-- scaled into screen space -- the GBC's OBJ-over-BG compositing, one draw
+-- late.  Entries carrying `colors` are re-colorized draws (the tall-grass
+-- feet overdraw, which must keep hiding sprite feet) issued through the
+-- color-0-keyed shade-remap shader.  World pass only; cleared per frame.
+local spriteRedraws = {}
+
+function PaletteFX.clearSpriteRedraws()
+  for i = #spriteRedraws, 1, -1 do spriteRedraws[i] = nil end
+end
+
+function PaletteFX.markSpriteRedraw(image, quad, x, y, sx, colors, keyed)
+  if currentPass ~= "world" then return end
+  spriteRedraws[#spriteRedraws + 1] =
+    { image = image, quad = quad, x = x, y = y, sx = sx or 1,
+      colors = colors, keyed = keyed }
+end
+
+-- whether a draw issued right now would land in the redraw list -- the
+-- OBP bake is only correct when the replay can restore it after the zone
+-- pass (tilt's upright pass colorizes per-billboard instead, so sprites
+-- there keep the raw sheet)
+function PaletteFX.spriteRedrawPassActive()
+  return currentPass == "world"
+end
+
+function PaletteFX.spriteRedraws()
+  return spriteRedraws
+end
+
 -- Active named-palette table for COLORS: RED++ uses data/palettes_gbc.lua,
 -- everything else uses the ROM-imported data.palettes.
 function PaletteFX.pack(data)
@@ -151,14 +242,38 @@ function PaletteFX.pack(data)
   return data and data.palettes or nil
 end
 
+-- SuperPalettes that differ between Red and Blue (pokered data/sgb/
+-- sgb_palettes.asm IF DEF(_RED)/_BLUE).  data/palettes_gbc.lua is the
+-- Red-derived pokered-gbc pack, so under RED++ a Blue playthrough must
+-- read these from the ROM-imported table or the title ribbon stays red
+-- and the Game Corner reels keep Red's pink (issue #128).
+local BLUE_VERSIONED = {
+  LOGO1 = true, SLOTS2 = true, SLOTS3 = true, SLOTS4 = true,
+}
+
+local function romNamedPal(data, name)
+  local p = data and data.palettes
+  return p and p.palettes and p.palettes[name]
+end
+
 -- named palette from the active pack (nil on stale builds / missing name).
 -- RED++ falls back to the ROM pack for names the gbc table omits (rare).
+-- OG RED short-circuits EVERY name to the one global GBC boot-ROM BG palette
+-- (the hardware had a single BGP for the whole game), so terrain zones,
+-- battle HP bars / text, and menu boxes all come out red -- everything a
+-- background tile drew.  Objects do not come through here (they bake
+-- GBC_OBJ green), so this stays a BG-only hook.
 function PaletteFX.pal(data, name)
+  if PaletteFX.mode == "ogred" then return PaletteFX.ogBg() end
+  if GameVersion.isBlue() and BLUE_VERSIONED[name] then
+    local fromRom = romNamedPal(data, name)
+    if fromRom then return fromRom end
+  end
   local p = PaletteFX.pack(data)
   local c = p and p.palettes[name]
   if c then return c end
-  if PaletteFX.usesGbcPack() and data and data.palettes then
-    return data.palettes.palettes[name]
+  if PaletteFX.usesGbcPack() then
+    return romNamedPal(data, name)
   end
   return nil
 end
@@ -169,6 +284,11 @@ end
 -- Transformed mon's pic is tinted gray, not the copied species' own
 -- SGB color).  RED++ uses per-species pals from mon_palettes.asm.
 function PaletteFX.monPal(data, species, transformed)
+  -- OG RED: a battle mon pic is a BG tile on the Game Boy Color (drawn into
+  -- the tilemap, colored by BGP), so it wears the global red BG palette, not
+  -- a per-species one -- matching the hardware capture where both mons are
+  -- red/pink on the white field.
+  if PaletteFX.mode == "ogred" then return PaletteFX.ogBg() end
   local p = PaletteFX.pack(data)
   if not p then return nil end
   if transformed then
@@ -223,6 +343,32 @@ local TILE_GROUP_EXCEPTIONS = {
   CELADON_MART_1F   = { tiles = { [0x07] = true, [0x08] = true,
                                   [0x17] = true, [0x18] = true }, group = 4 },
 }
+
+-- keyed by tileset id (applies on every map that uses it), consulted after
+-- the per-map table above
+local TILESET_GROUP_EXCEPTIONS = {
+  -- tile $22 (the hollow-square grave marker) -> GRAY: the extracted pack
+  -- files it under the bright blue family, which makes a purely
+  -- decorative floor marker read as an interactive pad
+  CEMETERY = { tiles = { [0x22] = true }, group = 0 },
+}
+
+-- pokered-gbc's lobby.bst repoints the Celadon LOBBY table's flat top
+-- (block 29, cells 5/6/9/10) at a duplicate tile ($5a, BROWN) so the
+-- tabletop and the checkerboard floor -- both raw tile $37 -- can take
+-- different palettes; the vanilla-derived blockset shares the one tile
+-- id, so the RED++ atlas path re-creates the duplicate: the alias slot
+-- is baked as a copy of `tile` in `group`'s colors, and the listed
+-- 0-based block cells draw the alias instead of the shared tile.
+-- Same block appears on CELADON_MART_ROOF (#52) and CELADON_DINER (#84).
+local LOBBY_TABLE_TOP_ALIAS = {
+  { block = 29, cells = { [5] = true, [6] = true, [9] = true, [10] = true },
+    tile = 0x37, alias = 0x5a, group = 5 },
+}
+PaletteFX.TILE_ALIASES = {
+  CELADON_MART_ROOF = LOBBY_TABLE_TOP_ALIAS,
+  CELADON_DINER = LOBBY_TABLE_TOP_ALIAS,
+}
 local ROOF_GROUP = 6
 local ROUTE_6_SAFFRON = { mapId = "ROUTE_6", useMapId = "SAFFRON_CITY", cellYBelow = 2 }
 
@@ -244,6 +390,8 @@ function PaletteFX.worldGroupAt(tileset, mapId, tileId)
   if not groups then return nil end
   local exc = TILE_GROUP_EXCEPTIONS[mapId]
   if exc and exc.tiles[tileId] then return exc.group end
+  exc = TILESET_GROUP_EXCEPTIONS[tileset]
+  if exc and exc.tiles[tileId] then return exc.group end
   return groups[tileId] or 7 -- TEXT: tile ids past the tileset's 96 (menus)
 end
 
@@ -293,6 +441,10 @@ function PaletteFX.spriteObp(spriteDef, seed)
   local src = spriteDef and spriteDef.source
   if not (w and src) then return nil end
   local idx = tonumber(src:match("%[(%d+)%]"))
+  -- RedBikeSprite loads outside SpriteSheetPointerTable
+  -- (LoadBikePlayerSpriteGraphics), so its source carries no bracketed
+  -- index; it wears the player's own palette, same as SPRITE_RED
+  if not idx and src:find("RedBikeSprite", 1, true) then idx = 0 end
   local group = idx and w.spriteAssignment[idx]
   if group == nil then return nil end
   if group == "random" then
@@ -381,7 +533,11 @@ function PaletteFX.applyOptions(opts)
 end
 
 function PaletteFX.modeLabel(mode)
-  return PaletteFX.MODE_LABELS[mode or PaletteFX.mode] or "GBC"
+  mode = mode or PaletteFX.mode
+  -- The GBC boot-ROM mode wears the running game's name: it is red for Red and
+  -- blue for Blue (see ogBg), so a Blue playthrough shows "OG BLUE".
+  if mode == "ogred" and GameVersion.isBlue() then return "OG BLUE" end
+  return PaletteFX.MODE_LABELS[mode] or "GBC"
 end
 
 -- When a state exposes no SGB zones but COLORS needs a forced palette

src/render/Renderer.lua

@@ -23,6 +23,29 @@ Renderer.HEIGHT = 144
 -- endFrame composites the padded canvas back with a matching offset.
 Renderer.UPRIGHT_MARGIN = 160
 
+-- LOVE units + framebuffer pixels + the live unit→pixel ratio.
+-- Android's DisplayMetrics.density (love.graphics.getDPIScale) is often
+-- non-integer (1.5, 2.75, …).  Integer scaling in units then maps each GB
+-- pixel to a fractional number of framebuffer pixels → shimmer, uneven /
+-- non-square "pixels", and movement judder (issue #87).  Always derive the
+-- crisp integer scale from the drawable pixel size; draw with (pixels/dpi)
+-- so the GPU lands on whole framebuffer pixels.  Desktop dpi=1 is unchanged.
+local function displayMetrics()
+  local ww, wh = love.graphics.getDimensions()
+  local pw, ph = ww, wh
+  if love.graphics.getPixelDimensions then
+    pw, ph = love.graphics.getPixelDimensions()
+  end
+  local dpi = 1
+  if ww > 0 and pw > 0 then
+    dpi = pw / ww
+  elseif love.graphics.getDPIScale then
+    dpi = love.graphics.getDPIScale()
+  end
+  if not dpi or dpi < 1e-6 then dpi = 1 end
+  return ww, wh, pw, ph, dpi
+end
+
 function Renderer:init()
   self.canvas = love.graphics.newCanvas(self.WIDTH, self.HEIGHT)
   self.canvas:setFilter("nearest", "nearest")
@@ -36,10 +59,12 @@ function Renderer:init()
   self.uprightActive = false
 end
 
--- integer scale that fits the GB UI viewport in the window
+-- Integer framebuffer pixels per GB pixel that fit the window.  Zoom /
+-- GBCFX / callers treat this as the crisp scale; endFrame converts to LOVE
+-- units via / dpi when drawing.
 function Renderer:fitScale()
-  local ww, wh = love.graphics.getDimensions()
-  return math.max(1, math.floor(math.min(ww / self.WIDTH, wh / self.HEIGHT)))
+  local _, _, pw, ph = displayMetrics()
+  return math.max(1, math.floor(math.min(pw / self.WIDTH, ph / self.HEIGHT)))
 end
 
 -- world-pass canvas size in world pixels: enough to fill the window at s'.
@@ -48,9 +73,13 @@ end
 -- background peeking at the receded top/bottom corners; flat mode returns
 -- exactly today's size (growth factor is 1 when tilt is inactive).
 function Renderer:worldViewSize()
-  local ww, wh = love.graphics.getDimensions()
-  local s = Zoom.scale(self:fitScale())
+  local ww, wh, _, _, dpi = displayMetrics()
+  local s = Zoom.scale(self:fitScale()) / dpi
   local vw, vh = Zoom.fillViewSize(s, ww, wh)
+  -- Even sizes keep Camera:follow on integer pixels (viewW/2 is integral),
+  -- so unfloored FX/sprite math cannot phase-shimmer against the tile layer.
+  if vw % 2 ~= 0 then vw = vw + 1 end
+  if vh % 2 ~= 0 then vh = vh + 1 end
   if Tilt.active() then
     local g = Tilt.viewGrowth()
     vw, vh = math.ceil(vw * g), math.ceil(vh * g)
@@ -62,8 +91,13 @@ end
 function Renderer:beginFrame(transparent)
   self.worldActive = false
   self.uprightActive = false
-  -- last frame's trueColor rects go before anything draws this one
+  -- warp-fade overlay from Transition (issue #121); cleared each frame so
+  -- a popped transition cannot leave a sticky black veil
+  self.worldFadeAlpha = nil
+  -- last frame's trueColor rects and sprite redraws go before anything
+  -- draws this one
   PaletteFX.clearTrueColor()
+  PaletteFX.clearSpriteRedraws()
   PaletteFX.setPass("ui")
   love.graphics.setCanvas(self.canvas)
   if transparent then
@@ -77,6 +111,10 @@ function Renderer:beginWorldPass()
   local vw, vh = self:worldViewSize()
   if not self.worldCanvas or self.worldCanvas:getWidth() ~= vw
      or self.worldCanvas:getHeight() ~= vh then
+    -- free the old canvas before replacing it: a zoom/tilt tween changes
+    -- the view size every frame, so without this the superseded canvases
+    -- pile up in VRAM until a GC finalizer happens to run
+    if self.worldCanvas and self.worldCanvas.release then self.worldCanvas:release() end
     self.worldCanvas = love.graphics.newCanvas(vw, vh)
     self.worldCanvas:setFilter("nearest", "nearest")
   end
@@ -105,6 +143,7 @@ function Renderer:beginUprightPass()
   local cw, ch = vw + 2 * M, vh + 2 * M
   if not self.uprightCanvas or self.uprightCanvas:getWidth() ~= cw
      or self.uprightCanvas:getHeight() ~= ch then
+    if self.uprightCanvas and self.uprightCanvas.release then self.uprightCanvas:release() end
     self.uprightCanvas = love.graphics.newCanvas(cw, ch)
     self.uprightCanvas:setFilter("nearest", "nearest")
   end
@@ -198,6 +237,7 @@ function Renderer:drawTiltedWorld(zoneList, s, wox, woy, target)
   -- 2x for extra crispness.
   if not self.tiltCanvas or self.tiltCanvas:getWidth() ~= wvw
      or self.tiltCanvas:getHeight() ~= wvh then
+    if self.tiltCanvas and self.tiltCanvas.release then self.tiltCanvas:release() end
     self.tiltCanvas = love.graphics.newCanvas(wvw, wvh)
     self.tiltCanvas:setFilter("linear", "linear")
   end
@@ -278,11 +318,14 @@ end
 -- presented through the GBC FX shader as a final pass.
 function Renderer:endFrame(zones, worldZones)
   love.graphics.setCanvas()
-  local ww, wh = love.graphics.getDimensions()
-  local S = self:fitScale()
+  local ww, wh, pw, ph, dpi = displayMetrics()
+  -- Sp = integer framebuffer pixels per GB pixel; S = LOVE-unit draw scale.
+  local Sp = self:fitScale()
+  local S = Sp / dpi
   local vpw, vph = self.WIDTH * S, self.HEIGHT * S
-  local ox = math.floor((ww - vpw) / 2)
-  local oy = math.floor((wh - vph) / 2)
+  -- Snap the letterbox origin to a framebuffer pixel, then convert to units.
+  local ox = math.floor((pw - self.WIDTH * Sp) / 2) / dpi
+  local oy = math.floor((ph - self.HEIGHT * Sp) / 2) / dpi
   local GBCFX = require("src.render.GBCFX")
   -- Forced mono/Classic modes still need a whole-screen zone when a state
   -- exposes no SGB packets (raw DMG canvas), so sendColors can remap.
@@ -310,9 +353,9 @@ function Renderer:endFrame(zones, worldZones)
   love.graphics.rectangle("fill", 0, 0, ww, wh)
   love.graphics.setColor(1, 1, 1, 1)
 
-  -- blit `canvas` at integer `scale` into origin (bx, by), scissored to
+  -- blit `canvas` at `scale` (LOVE units) into origin (bx, by), scissored to
   -- the (boxX, boxY, boxW, boxH) screen rect.  zoneScale converts zone
-  -- coords (canvas-space) into screen pixels.
+  -- coords (canvas-space) into screen units.
   local function blit(canvas, scale, zoneList, zoneScale, bx, by, boxX, boxY, boxW, boxH)
     local shader = zoneList and zoneList[1] and PaletteFX.shader() or nil
     if not shader then
@@ -344,11 +387,12 @@ function Renderer:endFrame(zones, worldZones)
   end
 
   if self.worldActive then
-    local s = Zoom.scale(S)
+    local sp = Zoom.scale(Sp)
+    local s = sp / dpi
     local wvw = self.worldCanvas:getWidth()
     local wvh = self.worldCanvas:getHeight()
-    local wox = math.floor((ww - wvw * s) / 2)
-    local woy = math.floor((wh - wvh * s) / 2)
+    local wox = math.floor((pw - wvw * sp) / 2) / dpi
+    local woy = math.floor((ph - wvh * sp) / 2) / dpi
     -- Tilt mode projects the ground world pass through the perspective mesh
     -- (SGB zones baked in beforehand -- see drawTiltedWorld -- so no zone
     -- scissoring here).  drawTiltedWorld returns false when tilt is off or
@@ -363,6 +407,35 @@ function Renderer:endFrame(zones, worldZones)
       else
         blit(self.worldCanvas, s, zones, S, wox, woy, 0, 0, ww, wh)
       end
+      -- OBP-baked overworld sprites replay on top of the zone pass (GBC
+      -- mode per-object coloring; see PaletteFX.markSpriteRedraw).  Grass
+      -- feet-overdraw entries carry `colors` and re-colorize through the
+      -- color-0-keyed shade-remap shader so they keep hiding sprite feet.
+      local redraws = PaletteFX.spriteRedraws()
+      if redraws[1] then
+        love.graphics.setColor(1, 1, 1, 1)
+        love.graphics.setScissor(0, 0, ww, wh)
+        local activeShader = nil
+        for _, r in ipairs(redraws) do
+          local wanted = r.colors
+            and (r.keyed and PaletteFX.keyedShader() or PaletteFX.shader())
+            or nil
+          if wanted ~= activeShader then
+            activeShader = wanted
+            love.graphics.setShader(wanted)
+          end
+          if wanted then PaletteFX.sendColors(wanted, r.colors) end
+          if r.quad then
+            love.graphics.draw(r.image, r.quad, wox + r.x * s, woy + r.y * s,
+                               0, s * r.sx, s)
+          else
+            love.graphics.draw(r.image, wox + r.x * s, woy + r.y * s,
+                               0, s * r.sx, s)
+          end
+        end
+        if activeShader then love.graphics.setShader() end
+        love.graphics.setScissor()
+      end
     end
     -- Composite the tilt upright pass over the ground (projected or, in the
     -- rare no-shader fallback, flat).  It already carries its billboards'
@@ -377,13 +450,24 @@ function Renderer:endFrame(zones, worldZones)
       love.graphics.draw(self.uprightCanvas, wox - M * s, woy - M * s, 0, s, s)
       love.graphics.setScissor()
     end
+    -- Screen-space warp fade (Transition) over the full world composite so
+    -- survey zoom / tilt edges darken with the center, not only the 160x144
+    -- UI letterbox.  Drawn before the UI blit so menus above a fade still
+    -- composite normally if one is ever stacked that way.
+    local fade = self.worldFadeAlpha
+    if fade and fade > 0 then
+      love.graphics.setColor(0, 0, 0, fade)
+      love.graphics.rectangle("fill", 0, 0, ww, wh)
+      love.graphics.setColor(1, 1, 1, 1)
+    end
   end
   -- UI stays in the classic centered GB letterbox
   blit(self.canvas, S, zones, S, ox, oy, ox, oy, vpw, vph)
 
   if present then
     love.graphics.setCanvas()
-    GBCFX.present(present, S)
+    -- shader grid/shadow math is in framebuffer pixels
+    GBCFX.present(present, Sp)
   end
   self.worldActive = false
   self.uprightActive = false

src/render/SpriteRenderer.lua

@@ -85,10 +85,21 @@ end
 
 -- facing: down/up/left/right; walkPhase: 0 stand, 1 walk; flip: alternate
 -- steps mirror the walk frame for up/down (GB uses OAM flip for this).
+local function blitFrame(image, quad, x, y, flip, redraw)
+  if flip then
+    love.graphics.draw(image, quad, x + 16, y, 0, -1, 1)
+    if redraw then PaletteFX.markSpriteRedraw(image, quad, x + 16, y, -1) end
+  else
+    love.graphics.draw(image, quad, x, y)
+    if redraw then PaletteFX.markSpriteRedraw(image, quad, x, y, 1) end
+  end
+end
+
 function SpriteRenderer:draw(px, py, camX, camY, facing, walkPhase, stepFlip)
   local x = math.floor(px - camX)
   local y = math.floor(py - camY) - 4
   local image = self.image
+  local redraw = false
   -- full-color art claims its 16x16 cell out of the shade-remap pass
   if self.def.trueColor then
     PaletteFX.markTrueColor(x, y, 16, 16)
@@ -102,12 +113,19 @@ function SpriteRenderer:draw(px, py, camX, camY, facing, walkPhase, stepFlip)
     if colors then
       image = getObpImage(self.def.image, colors, group)
     end
+  elseif PaletteFX.usesSpriteObp() and PaletteFX.spriteRedrawPassActive() then
+    -- OG RED (GBC boot-ROM look): every OBJ wears the one global green
+    -- object palette.  The red BG zone shader still runs over the world
+    -- canvas, so the baked sprite is queued for a post-zone redraw
+    -- (PaletteFX.markSpriteRedraw) that restores its green pixels on top.
+    image = getObpImage(self.def.image, PaletteFX.GBC_OBJ, "gbcobj")
+    redraw = true
   end
   -- single-frame sprites (item balls, fossils...) have one fixed pose;
   -- still 3-frame sprites turn to face (the nurse at her machine,
   -- facePlayer on STAY NPCs) but never show walk frames
   if self.def.frames <= 1 then
-    love.graphics.draw(image, self.frames[0], x, y)
+    blitFrame(image, self.frames[0], x, y, false, redraw)
     return
   end
   local frame = (self.def.walker and walkPhase == 1)
@@ -119,11 +137,7 @@ function SpriteRenderer:draw(px, py, camX, camY, facing, walkPhase, stepFlip)
     flip = true
   end
   local quad = self.frames[frame] or self.frames[0]
-  if flip then
-    love.graphics.draw(image, quad, x + 16, y, 0, -1, 1)
-  else
-    love.graphics.draw(image, quad, x, y)
-  end
+  blitFrame(image, quad, x, y, flip, redraw)
 end
 
 return SpriteRenderer

src/render/TileRenderer.lua

@@ -55,8 +55,29 @@ local FLOWER_IMAGES = {
 local SPINNER_STRIP = "assets/generated/tilesets/spinners.png"
 
 local animFrame = 0
-function TileRenderer.tick()
-  animFrame = animFrame + 1
+local animAccum = 0
+local ANIM_STEP = 1 / 60 -- Game Boy logic rate (matches FixedStep.STEP)
+
+-- Advance water/flower/spinner tile animation.  Called from the overworld
+-- draw path so it keeps running under dialogs (overworld update does not),
+-- but consumes wall-clock dt into 60Hz steps so high/low display refresh
+-- no longer speeds up or slows the cycle (issue #4).
+-- tick() / tick(nil) with no love.timer.getDelta (headless tests) still
+-- advances exactly one frame per call.
+function TileRenderer.tick(dt)
+  if dt == nil and love and love.timer and love.timer.getDelta then
+    dt = love.timer.getDelta()
+  end
+  if dt == nil then
+    animFrame = animFrame + 1
+    return
+  end
+  -- Cap catch-up so a long stall cannot jump many water/flower periods
+  animAccum = math.min(animAccum + dt, 0.25)
+  while animAccum >= ANIM_STEP do
+    animAccum = animAccum - ANIM_STEP
+    animFrame = animFrame + 1
+  end
 end
 
 -- ------------------------------------------------------------------
@@ -90,8 +111,8 @@ function TileRenderer.setSpinning(active)
 end
 
 -- true while the spinner arrow tiles should show the 'blur' graphic; false
--- means draw nothing extra (the static mapBatch/ringBatch tile shows
--- through, matching the asm's restore-to-original behavior). The 8-tick
+-- means draw nothing extra (the static window tile shows through,
+-- matching the asm's restore-to-original behavior). The 8-tick
 -- half-period approximates one GB movement step (2px/frame); this is a
 -- deliberate approximation of wSimulatedJoypadStatesIndex bit-0 parity, not
 -- a cycle-accurate replication -- the port's tweened scriptMove has no
@@ -347,9 +368,10 @@ local function getGbcAtlas(imagePath, tilesetId, mapId, perRow, data)
     if groupColors then
       local src = Assets.imageData(imagePath)
       local iw, ih = src:getDimensions()
+      local total = (iw / 8) * (ih / 8)
       local out = love.image.newImageData(iw, ih)
       local tileColors = {}
-      for t = 0, (iw / 8) * (ih / 8) - 1 do
+      for t = 0, total - 1 do
         local colors = tileColors[t]
         if colors == nil then
           local group = PaletteFX.worldGroupAt(tilesetId, mapId, t)
@@ -366,6 +388,25 @@ local function getGbcAtlas(imagePath, tilesetId, mapId, perRow, data)
           end
         end
       end
+      -- duplicate-tile aliases: bake a copy of a shared tile graphic into
+      -- a spare slot under a different palette group, so block cells that
+      -- draw the alias can color apart from cells sharing the raw tile
+      for _, al in ipairs(PaletteFX.TILE_ALIASES and PaletteFX.TILE_ALIASES[mapId] or {}) do
+        if al.alias < total then
+          local colors = groupColors[al.group + 1]
+          local sxo = (al.tile % perRow) * 8
+          local syo = math.floor(al.tile / perRow) * 8
+          local dxo = (al.alias % perRow) * 8
+          local dyo = math.floor(al.alias / perRow) * 8
+          for py = 0, 7 do
+            for px = 0, 7 do
+              local r, g, b, a = src:getPixel(sxo + px, syo + py)
+              r, g, b, a = recolorSample(r, g, b, a, colors)
+              out:setPixel(dxo + px, dyo + py, r, g, b, a)
+            end
+          end
+        end
+      end
       img = love.graphics.newImage(out)
     end
   end
@@ -406,22 +447,24 @@ function TileRenderer.new(map, data)
   end
 
   local def = map.def
-  local wB, hB = def.width, def.height
-  -- two batches: the border-block ring around the map, and the map body.
-  -- Connected-map strips draw body-only on top of this map's ring.
-  local total = (wB + 2 * BORDER_BLOCKS) * (hB + 2 * BORDER_BLOCKS) * 16
-  self.ringBatch = love.graphics.newSpriteBatch(self.image, total, "static")
-  self.mapBatch = love.graphics.newSpriteBatch(self.image, wB * hB * 16, "static")
-  -- animated tiles overdraw the static batches each frame.  Entry order
-  -- decides which one claims a tile listed twice, so the vanilla defaults
-  -- keep the old water-then-flower-then-spinner precedence.
+  -- The map body measured in 8px tiles (each block is 4x4 tiles).  The tile
+  -- layer is drawn windowed to the camera (see :ensureWindow) instead of
+  -- baked into a whole-map SpriteBatch, so a map becoming visible -- a warp,
+  -- a connection seam -- costs nothing to "build": there is no per-map batch
+  -- construction that scales with map size, which is what stuttered.
+  self.bodyTilesW = def.width * 4
+  self.bodyTilesH = def.height * 4
+  -- Animated tiles overdraw the static window each frame.  Only the per-entry
+  -- render spec (textures/sequence/gate) is kept here; the animated cells are
+  -- gathered per camera window in :ensureWindow, so nothing here scales with
+  -- map size either.  Entry order decides which entry claims a tile listed
+  -- twice (the vanilla water-then-flower-then-spinner precedence).
   local anims, claimedBy = {}, {}
   local declared = map.tileset.animatedTiles
                    or TileRenderer.defaultAnimatedTiles(map.tileset)
   for _, spec in ipairs(declared) do
     local anim = buildAnim(spec, map.tileset.image, perRow, self.quads, gbcCtx)
     if anim then
-      anim.cells = {}
       anims[#anims + 1] = anim
       for _, tile in ipairs(anim.tiles) do
         if claimedBy[tile] == nil then claimedBy[tile] = anim end
@@ -429,53 +472,20 @@ function TileRenderer.new(map, data)
     end
   end
 
-  for by = -BORDER_BLOCKS, hB + BORDER_BLOCKS - 1 do
-    for bx = -BORDER_BLOCKS, wB + BORDER_BLOCKS - 1 do
-      local inside = bx >= 0 and by >= 0 and bx < wB and by < hB
-      local batch = inside and self.mapBatch or self.ringBatch
-      local block = map.tileset.blocks[map:blockAt(bx, by) + 1]
-      for ty = 0, 3 do
-        for tx = 0, 3 do
-          local tile = block[ty * 4 + tx + 1]
-          local quad = self.quads[tile]
-          if quad then
-            batch:add(quad, bx * 32 + tx * 8, by * 32 + ty * 8)
-          end
-          local anim = claimedBy[tile]
-          if anim then
-            local cells = anim.cells
-            cells[#cells + 1] = { bx * 32 + tx * 8, by * 32 + ty * 8, inside, tile }
-          end
-        end
-      end
+  -- duplicate-tile alias remap (RED++ atlas only): [blockId][0-based cell]
+  -- -> alias tile id (see PaletteFX.TILE_ALIASES / getGbcAtlas's bake)
+  local aliasMap
+  if gbcCtx then
+    for _, al in ipairs(PaletteFX.TILE_ALIASES and PaletteFX.TILE_ALIASES[map.id] or {}) do
+      aliasMap = aliasMap or {}
+      local cells = aliasMap[al.block] or {}
+      for ci in pairs(al.cells) do cells[ci] = al.alias end
+      aliasMap[al.block] = cells
     end
   end
-
-  -- animated overdraw batches: the full set (ring + body) for the
-  -- current map, and a body-only set for connected-map drawing --
-  -- a neighbor's water ring must never overdraw this map's tiles.
-  -- `quadFor`, when given, looks up a per-entry quad (used by toggle
-  -- entries, whose texture is a full tileset-atlas clone rather than a
-  -- single-tile image like the hshift/frames variants).
-  local function animBatches(entries, image, quadFor)
-    if #entries == 0 then return nil, nil end
-    local all = love.graphics.newSpriteBatch(image, #entries, "static")
-    local body
-    for _, c in ipairs(entries) do
-      if quadFor then all:add(quadFor(c[4]), c[1], c[2]) else all:add(c[1], c[2]) end
-      if c[3] then
-        body = body or love.graphics.newSpriteBatch(image, #entries, "static")
-        if quadFor then body:add(quadFor(c[4]), c[1], c[2]) else body:add(c[1], c[2]) end
-      end
-    end
-    return all, body
-  end
-  for _, anim in ipairs(anims) do
-    anim.batch, anim.bodyBatch =
-      animBatches(anim.cells, anim.textures[1], anim.quadFor)
-    anim.cells = nil
-  end
+  self.aliasMap = aliasMap
   self.anims = anims
+  self.claimedBy = claimedBy
 
   -- a repeating 32x32 image of the border block, tiled behind
   -- everything the 3-block ring doesn't cover (the survey zoom sees
@@ -510,8 +520,16 @@ function TileRenderer:drawBorderFill(camX, camY, vw, vh)
   if not self.borderFill then return end
   if self.trueColor then PaletteFX.markTrueColor(0, 0, vw, vh) end
   local x, y = math.floor(camX), math.floor(camY)
-  local quad = love.graphics.newQuad(x, y, vw, vh, 32, 32)
-  love.graphics.draw(self.borderFill, quad, 0, 0)
+  -- one reused Quad per renderer, mutated in place: this runs every
+  -- overworld frame, so allocating a fresh Quad here churned the GC
+  local q = self.borderQuad
+  if q then
+    q:setViewport(x, y, vw, vh, 32, 32)
+  else
+    q = love.graphics.newQuad(x, y, vw, vh, 32, 32)
+    self.borderQuad = q
+  end
+  love.graphics.draw(self.borderFill, q, 0, 0)
 end
 
 -- GB OBJ-to-BG priority: sprites show through BG color 0 and hide under
@@ -556,19 +574,114 @@ function TileRenderer:drawCellBottom(cx, cy, camX, camY)
   if shader then love.graphics.setShader() end
 end
 
--- animated overdraw at the current step; bodyOnly skips the ring
--- positions (connected maps draw body-only)
-function TileRenderer:drawAnimated(camX, camY, bodyOnly)
+-- queue the same bottom tile row for the post-zone sprite-redraw pass
+-- (GBC mode: OBP-baked sprites replay after the zone shader, so the
+-- grass patch that hides their feet must replay over them, colorized
+-- with the map's palette and color-0 keyed)
+function TileRenderer:markCellBottomRedraw(cx, cy, camX, camY, colors)
+  local ty = cy * 2 + 1
+  for i = 0, 1 do
+    local tx = cx * 2 + i
+    local quad = self.quads[self.map:tileAt(tx, ty)]
+    if quad then
+      PaletteFX.markSpriteRedraw(self.image, quad, tx * 8 - math.floor(camX),
+                                 ty * 8 - math.floor(camY), 1, colors, true)
+    end
+  end
+end
+
+-- Window cover for the static tile layer.  Refill the reusable window batch
+-- (and the per-entry animated batches) only when the camera has scrolled past
+-- what they already cover; a small margin keeps small scrolls free.  Cost
+-- scales with the view, never the map -- crossing a seam or warping in builds
+-- nothing.  The beyond-body area (what the old 3-block ring drew) is painted
+-- by :drawBorderFill, whose world-aligned border-block tiling is identical
+-- there, so only body tiles are gathered here.
+local WINDOW_MARGIN = 8 -- tiles of slack kept around the view between refills
+
+function TileRenderer:ensureWindow(camX, camY, vw, vh)
+  local W, H = self.bodyTilesW, self.bodyTilesH
+  vw = vw or W * 8 -- a nil view (headless draw) means the whole body
+  vh = vh or H * 8
+  -- visible body-tile range (8px tiles), clamped to the map body
+  local tx0 = math.min(W, math.max(0, math.floor(camX / 8)))
+  local ty0 = math.min(H, math.max(0, math.floor(camY / 8)))
+  local tx1 = math.max(0, math.min(W, math.floor((camX + vw) / 8) + 1))
+  local ty1 = math.max(0, math.min(H, math.floor((camY + vh) / 8) + 1))
+  local win = self.win
+  if win and tx0 >= win.tx0 and ty0 >= win.ty0
+     and tx1 <= win.tx1 and ty1 <= win.ty1 then
+    return -- still inside the last fill
+  end
+  -- refill with margin so the next few scrolled pixels stay covered
+  tx0 = math.max(0, tx0 - WINDOW_MARGIN)
+  ty0 = math.max(0, ty0 - WINDOW_MARGIN)
+  tx1 = math.min(W, tx1 + WINDOW_MARGIN)
+  ty1 = math.min(H, ty1 + WINDOW_MARGIN)
+  if not self.winBatch then
+    self.winBatch = love.graphics.newSpriteBatch(self.image, 1024, "dynamic")
+  end
+  self.winBatch:clear()
+  local anims = self.anims
+  for _, anim in ipairs(anims) do
+    if not anim.batch then
+      anim.batch = love.graphics.newSpriteBatch(anim.textures[1], 256, "dynamic")
+    end
+    anim.batch:clear()
+  end
+  local map, quads = self.map, self.quads
+  local claimedBy, aliasMap = self.claimedBy, self.aliasMap
+  for ty = ty0, ty1 - 1 do
+    local by = math.floor(ty / 4)
+    local ty4 = ty % 4
+    for tx = tx0, tx1 - 1 do
+      local blockId = map:blockAt(math.floor(tx / 4), by)
+      local block = map.tileset.blocks[blockId + 1]
+      if block then
+        local ci = ty4 * 4 + (tx % 4)
+        local tile = block[ci + 1]
+        local remap = aliasMap and aliasMap[blockId]
+        if remap and remap[ci] then tile = remap[ci] end
+        local wx, wy = tx * 8, ty * 8
+        local quad = quads[tile]
+        if quad then self.winBatch:add(quad, wx, wy) end
+        local anim = claimedBy[tile]
+        if anim then
+          if anim.quadFor then
+            anim.batch:add(anim.quadFor(tile), wx, wy)
+          else
+            anim.batch:add(wx, wy)
+          end
+        end
+      end
+    end
+  end
+  self.win = { tx0 = tx0, ty0 = ty0, tx1 = tx1, ty1 = ty1 }
+end
+
+-- draw the static tile window, then its animated overdraw, at the camera offset
+function TileRenderer:drawWindow(camX, camY, vw, vh)
+  self:ensureWindow(camX, camY, vw, vh)
+  if self.winBatch then
+    love.graphics.draw(self.winBatch, -math.floor(camX), -math.floor(camY))
+  end
+  self:drawAnimated(camX, camY)
+end
+
+-- animated overdraw at the current step, over the static window batch.  The
+-- cells were gathered for the current camera window by :ensureWindow, so this
+-- only ever touches on-screen animated tiles.
+function TileRenderer:drawAnimated(camX, camY)
   local anims = self.anims
   if not anims then return end
   local x, y = -math.floor(camX), -math.floor(camY)
   for _, anim in ipairs(anims) do
-    local batch = bodyOnly and anim.bodyBatch or anim.batch
+    local batch = anim.batch
     if batch then
       if anim.gate then
         -- a gated entry has only the two frames the asm has (patch /
         -- restore-to-static); when the gate is shut draw nothing so the
-        -- already-static mapBatch/ringBatch tile shows through unchanged
+        -- already-static window tile shows through unchanged
         if gateOpen(anim.gate) then love.graphics.draw(batch, x, y) end
       else
         local step = math.floor(animFrame / anim.period) % #anim.sequence + 1
@@ -589,30 +702,68 @@ function TileRenderer:markTrueColor(camX, camY, blocks)
                           (def.height + 2 * blocks) * 32)
 end
 
-function TileRenderer:draw(camX, camY)
+function TileRenderer:draw(camX, camY, vw, vh)
   if self.trueColor then self:markTrueColor(camX, camY, BORDER_BLOCKS) end
-  love.graphics.draw(self.ringBatch, -math.floor(camX), -math.floor(camY))
-  love.graphics.draw(self.mapBatch, -math.floor(camX), -math.floor(camY))
-  self:drawAnimated(camX, camY)
+  self:drawWindow(camX, camY, vw, vh)
 end
 
--- body only, for connected-map strips
-function TileRenderer:drawMapOnly(camX, camY)
+-- body only, for connected-map strips.  Identical to :draw now that the
+-- border ring is served by :drawBorderFill for the current map too -- the
+-- only remaining difference is the trueColor mark extent.
+function TileRenderer:drawMapOnly(camX, camY, vw, vh)
   if self.trueColor then self:markTrueColor(camX, camY, 0) end
-  love.graphics.draw(self.mapBatch, -math.floor(camX), -math.floor(camY))
-  self:drawAnimated(camX, camY, true)
+  self:drawWindow(camX, camY, vw, vh)
 end
 
--- rebuild after a block change (Cut trees)
+local function safeRelease(o)
+  if o and o.release then pcall(o.release, o) end
+end
+
+-- Release only the GPU objects this instance built and uniquely owns: the
+-- two SpriteBatches, the border-fill image and its quad, the per-tile
+-- quads, and the animated-overdraw batches.  Deliberately leaves the
+-- tileset atlas (self.image, shared through Assets/imageCache) and the
+-- animation textures (shared module caches) alone -- other maps still use
+-- them.  Used by :rebuild before it swaps in fresh batches, and by
+-- :release on eviction.
+function TileRenderer:releaseBatches()
+  safeRelease(self.winBatch); self.winBatch = nil
+  safeRelease(self.borderFill); self.borderFill = nil
+  safeRelease(self.borderQuad); self.borderQuad = nil
+  self.win = nil
+  if self.quads then
+    for _, q in pairs(self.quads) do safeRelease(q) end
+    self.quads = nil
+  end
+  if self.anims then
+    for _, a in ipairs(self.anims) do
+      safeRelease(a.batch); a.batch = nil
+      -- a.textures are shared, module-cached: never released here
+    end
+  end
+end
+
+-- Full teardown for eviction (MapLoader.evict): the owned batches, plus
+-- the RED++ per-map recolored atlas, which -- unlike the plain tileset
+-- atlas -- is unique to this map (gbcAtlasCache is keyed by map id).
+function TileRenderer:release()
+  self:releaseBatches()
+  if self.gbcAtlas and self.image then
+    local key = self.map.tileset.image .. "#gbc:" .. self.map.id
+    if gbcAtlasCache[key] == self.image then gbcAtlasCache[key] = nil end
+    safeRelease(self.image)
+    self.image = nil
+    self.gbcAtlas = nil
+  end
+  self.anims = nil
+end
+
+-- rebuild after a block change (Cut trees, card-key doors).  The tile layer
+-- is read live from the map on every window fill, so a block swap only needs
+-- the cached window dropped -- the next draw re-reads the changed blocks.  No
+-- SpriteBatch is reconstructed; that is the whole point of the windowed draw.
 function TileRenderer:rebuild()
-  local fresh = TileRenderer.new(self.map, self.data)
-  self.image = fresh.image
-  self.gbcAtlas = fresh.gbcAtlas
-  self.quads = fresh.quads
-  self.ringBatch = fresh.ringBatch
-  self.mapBatch = fresh.mapBatch
-  self.anims = fresh.anims
-  self.borderFill = fresh.borderFill
+  self.win = nil
 end
 
 -- drop every atlas and every derived animation texture so the next

src/render/Transition.lua

@@ -57,6 +57,16 @@ end
 function Transition:draw()
   local alpha = self.t / self.frames
   if self.phase == "in" then alpha = 1 - alpha end
+  -- Survey zoom draws the overworld into a window-filling world canvas
+  -- while the UI pass stays the classic 160x144 letterbox.  A rect on the
+  -- UI canvas only darkens that center box (issue #121); when the world
+  -- pass ran this frame, hand the alpha to Renderer:endFrame so it paints
+  -- a screen-space overlay over the full composite instead.
+  local r = self.game and self.game.renderer
+  if r and r.worldActive then
+    r.worldFadeAlpha = alpha
+    return
+  end
   love.graphics.setColor(0, 0, 0, alpha)
   love.graphics.rectangle("fill", 0, 0, 160, 144)
   love.graphics.setColor(1, 1, 1, 1)

src/script/Commands.lua

@@ -5,6 +5,7 @@
 -- Conditionals: check_flag stores its result in ctx.lastCheck;
 -- jump_if_true/jump_if_false jump to an absolute row index.
 
+local Collision = require("src.world.Collision")
 local Flags = require("src.script.Flags")
 local Logger = require("src.core.Logger")
 local Screens = require("src.ui.Screens")
@@ -269,7 +270,10 @@ end
 local DIRS4 = { { 0, -1, "up" }, { 0, 1, "down" },
                 { -1, 0, "left" }, { 1, 0, "right" } }
 
-local function bfsPath(map, sx, sy, tx, ty)
+-- entities/mover let the walk route around other entities' cells (the
+-- player especially), so a scripted NPC never clips through them; the
+-- target cell is exempt so an NPC can still walk up onto its goal
+local function bfsPath(map, sx, sy, tx, ty, entities, mover)
   local key = function(x, y) return y * 1000 + x end
   local prev = { [key(sx, sy)] = false }
   local queue = { { sx, sy } }
@@ -289,8 +293,11 @@ local function bfsPath(map, sx, sy, tx, ty)
     for _, d in ipairs(DIRS4) do
       local nx, ny = cx + d[1], cy + d[2]
       local nk = key(nx, ny)
+      local isTarget = nx == tx and ny == ty
       if prev[nk] == nil and map:inBounds(nx, ny)
-         and (map:isWalkableCell(nx, ny) or (nx == tx and ny == ty)) then
+         and (map:isWalkableCell(nx, ny) or isTarget)
+         and (isTarget or not entities
+              or not Collision.occupied(entities, nx, ny, mover)) then
         prev[nk] = { cx, cy, d[3] }
         table.insert(queue, { nx, ny })
       end
@@ -303,7 +310,7 @@ function Commands.move_npc_to(ctx, objIndex, tx, ty)
   local ow = ctx.overworld
   local npc = ow:npcByIndex(objIndex)
   if not npc then return end
-  local path = bfsPath(ow.map, npc.cellX, npc.cellY, tx, ty)
+  local path = bfsPath(ow.map, npc.cellX, npc.cellY, tx, ty, ow.entities, npc)
   if not path then
     Logger.warn("move_npc_to: no path to (%d,%d)", tx, ty)
     return
@@ -390,6 +397,7 @@ local function toggleObject(ctx, mapId, objName, visible)
   -- positions mid-cutscene)
   local ow = ctx.overworld
   if not ow or ow.map.id ~= mapId then return end
+  ow.npcPool = ow.npcPool or {}
   if visible then
     for _, n in ipairs(ow.npcs) do
       if n.def.name == objName then return end
@@ -400,12 +408,16 @@ local function toggleObject(ctx, mapId, objName, visible)
         local npc = NPC.new(ctx.game.data, mapId, obj)
         table.insert(ow.npcs, npc)
         table.insert(ow.entities, npc)
+        ow.npcPool[npc.id] = npc
         return
       end
     end
   else
     for i = #ow.npcs, 1, -1 do
-      if ow.npcs[i].def.name == objName then table.remove(ow.npcs, i) end
+      if ow.npcs[i].def.name == objName then
+        ow.npcPool[ow.npcs[i].id] = nil
+        table.remove(ow.npcs, i)
+      end
     end
     for i = #ow.entities, 1, -1 do
       local e = ow.entities[i]
@@ -426,6 +438,20 @@ function Commands.play_sound(ctx, soundId)
   require("src.core.Sound").play(ctx.game.data, soundId)
 end
 
+-- play_once <songId>: one-shot jingle (Music_PkmnHealed, etc.); blocks
+-- until it finishes so heal-rest scripts (Mom, captain text_asm) match
+-- Gen1's wait-on-channel loop.  The map theme resumes when it ends
+-- (Music.playOnce / pendingRestore).
+function Commands.play_once(ctx, songId)
+  local Music = require("src.core.Music")
+  if not Music.playOnce(ctx.game.data, songId) then return end
+  local runner = ctx.runner
+  runner.waitingCheck = function()
+    return not Music.oneShotPlaying()
+  end
+  runner:yield()
+end
+
 -- play_cry <species>: PlayCry (home/audio.asm).  The text_asm bodies that
 -- use it run text_far (a no-button-wait "...@" string) -> PlayCry ->
 -- WaitForSoundToFinish, all within the same text ID -- the cry only starts
@@ -458,11 +484,51 @@ function Commands.heal_party(ctx)
   end
 end
 
+-- AskName (engine/menus/naming_screen.asm): yes/no then NamingScreen.
+-- AddPartyMon only offers this for party mons (box deposits skip it).
+-- Preserves ctx.lastCheck so GivePokemon's carry is not clobbered by the
+-- yes/no result (scripts jump_if_false on give failure afterwards).
+local function askNickname(ctx, mon)
+  local runner = ctx.runner
+  if not runner then return end
+  local success = ctx.lastCheck
+  local name = ctx.game.stringBuffer
+    or (ctx.game.data.pokemon[mon.species]
+        and ctx.game.data.pokemon[mon.species].name)
+    or mon.species
+  -- Prefer the real text label; fall back to the BattleState wording.
+  if ctx.game.data.text and ctx.game.data.text._DoYouWantToNicknameText then
+    Commands.show_text(ctx, "_DoYouWantToNicknameText", { RAM = name })
+  else
+    Commands.show_text(ctx, ("Do you want to\ngive a nickname\nto %s?"):format(name))
+  end
+  local ChoiceBox = require("src.ui.ChoiceBox")
+  ctx.game.stack:push(ChoiceBox.new(ctx.game, function(yes)
+    if not yes then
+      ctx.lastCheck = success
+      runner:resume()
+      return
+    end
+    Screens.push(ctx.game, "NamingScreen", {
+      title = "NICKNAME?", maxLen = 10,
+      onDone = function(nick)
+        if nick and #nick > 0 then mon.nickname = nick end
+        ctx.lastCheck = success
+        runner:resume()
+      end,
+    })
+  end))
+  runner:yield()
+  ctx.lastCheck = success
+end
+
 -- give_pokemon <species> <level>: _GivePokemon (engine/events/
 -- give_pokemon.asm) -- party first, then the box.  ctx.lastCheck gets
 -- the asm's carry: true when the mon was given, false when both the
 -- party and every box are full (that .boxFull path leaves the giver's
 -- script able to offer again later, e.g. the Celadon Eevee ball).
+-- Party adds run AskName (AddPartyMon) when a script runner is present;
+-- mods that pre-set gift.nickname skip the prompt.
 function Commands.give_pokemon(ctx, species, level)
   -- Native mods can transform a gift before the Pokémon object is created.
   -- This is intentionally an event rather than a special-case starter hook:
@@ -479,7 +545,8 @@ function Commands.give_pokemon(ctx, species, level)
   ctx.game.stringBuffer = ctx.game.data.pokemon[species].name or species
   ctx.pendingPokemonName = species
   require("src.battle.BattleState").stampOT(ctx.save, mon)
-  if not Party.add(ctx.save.party, mon) then
+  local addedToParty = Party.add(ctx.save.party, mon)
+  if not addedToParty then
     if not require("src.pokemon.Boxes").deposit(ctx.save, mon) then
       ctx.lastCheck = false
       return
@@ -491,18 +558,40 @@ function Commands.give_pokemon(ctx, species, level)
     dex.owned[species] = true
   end
   ctx.lastCheck = true
+  -- AddPartyMon AskName: party only; skip box deposits, mod-set nicknames,
+  -- and callback-style callers that have no script runner to yield on.
+  if addedToParty and not gift.nickname and ctx.runner then
+    askNickname(ctx, mon)
+  end
 end
 
 function Commands.give_money(ctx, amount)
   ctx.save.money = math.max(0, ctx.save.money + amount)
 end
 
+-- Point LAST_MAP exits at an outdoor door (pokered wLastMap).  Keeps the
+-- live overworld memory in sync so a scripted home warp from the HoF PC
+-- does not leave Red's house mats aimed at Indigo Plateau (#103).
+function Commands.remember_outdoor(ctx, mapId, x, y)
+  local outdoor = { id = mapId, x = x, y = y }
+  ctx.save.lastOutdoor = outdoor
+  if ctx.overworld and ctx.overworld.rememberOutdoor then
+    ctx.overworld:rememberOutdoor(mapId, x, y)
+  elseif ctx.overworld then
+    ctx.overworld.lastOutdoor = outdoor
+  end
+end
+
 -- Hall of Fame: snapshot the winning party (SaveHallOfFameTeams inside
 -- AnimateHallOfFame), run the induction showcase and the end credits,
 -- autosave while THE END is up, then soft-reset to the title -- the whole
 -- predef HallOfFamePC + tail of HallOfFameResetEventsAndSaveScript
 -- (engine/movie/hall_of_fame.asm, engine/movie/credits.asm,
 -- scripts/HallOfFame.asm).
+--
+-- Departure from pokered: CONTINUE lands in the NewGameWarp bedroom with
+-- a healed party and lastOutdoor on Pallet Town, instead of remaining
+-- softlocked in HALL_OF_FAME with LAST_MAP still aimed at Indigo (#103).
 function Commands.record_hall_of_fame(ctx)
   ctx.save.hallOfFame = ctx.save.hallOfFame or {}
   local entry = {}
@@ -518,17 +607,25 @@ function Commands.record_hall_of_fame(ctx)
     Screens.push(game, "Credits", function()
       runner:resume()
     end, function()
-      -- THE END is on screen: HallOfFameResetEventsAndSaveScript sets
-      -- wLastBlackoutMap := PALLET_TOWN and runs SaveGameData, so the
-      -- save keeps the player standing in the HALL_OF_FAME room.  (The
-      -- E4 room-script/event resets that precede the save in pokered are
-      -- the Indigo lobby's re-entry reset here, data/scripts/story6.lua.)
-      -- pokered writes PALLET_TOWN here as a literal, not as "the spawn" --
-      -- the vanilla spawn is REDS_HOUSE_2F. SaveData.defaultHeal carries
-      -- that split (and lets a total conversion redirect it).
+      -- THE END is on screen: heal, place the player at post-game home,
+      -- retarget LAST_MAP, then SaveGameData.  (E4 room-script/event
+      -- resets that precede the save in pokered are the Indigo lobby's
+      -- re-entry reset here, data/scripts/story6.lua.)
+      local SaveData = require("src.core.SaveData")
+      local Pokemon = require("src.pokemon.Pokemon")
       local boot = game.data.field and game.data.field.boot or {}
-      ctx.save.lastHeal = require("src.core.SaveData").defaultHeal(boot)
+      for _, mon in ipairs(ctx.save.party or {}) do
+        Pokemon.heal(mon)
+      end
+      SaveData.applyPostGameHome(ctx.save, boot)
+      if game.overworld then
+        game.overworld.lastOutdoor = ctx.save.lastOutdoor
+      end
       if game.writeSave then game:writeSave() end
+      -- writeSave's captureSave re-stamps the live HALL_OF_FAME coords;
+      -- re-apply home and persist so CONTINUE resumes in the bedroom.
+      SaveData.applyPostGameHome(ctx.save, boot)
+      SaveData.save(ctx.save)
     end)
   end)
   runner:yield()
@@ -823,7 +920,12 @@ end
 -- registry and block until the screen pops itself
 function Commands.push_screen(ctx, screenId, args)
   local screens = ctx.game.data.screens
-  if not (screens and screens[screenId]) then
+  local known = screens and screens[screenId] ~= nil
+  if not known then
+    -- builtin engine screens (src/ui/<id>.lua) resolve through Screens too
+    known = pcall(Screens.get, ctx.game, screenId)
+  end
+  if not known then
     error(("push_screen: unknown screen '%s'"):format(tostring(screenId)), 0)
   end
   local runner = ctx.runner
@@ -838,15 +940,21 @@ function Commands.push_screen(ctx, screenId, args)
   runner:yield()
 end
 
--- fade "out"|"in" [frames]: screen fade without warping (the Transition
--- ramp startWarpTo uses, split in two).  "out" pushes a black overlay
--- that stays up; the held state keeps ticking the runner's frame-waits
--- so a script can wait/replace_block under it.  "in" ramps it away.
+-- fade "out"|"in" [frames|"white"|"black"] [frames|"white"|"black"]:
+-- screen fade without warping (the Transition ramp startWarpTo uses,
+-- split in two).  "out" pushes an overlay that stays up; the held state
+-- keeps ticking the runner's frame-waits so a script can wait /
+-- heal_party / play_once under it.  "in" ramps it away.
+-- Color defaults to black (warp-style); "white" matches GBFadeOutToWhite
+-- / GBFadeInFromWhite (Mom heal, Silph Co. nurse).  White defaults to
+-- 24 frames (3 palettes x 8); black defaults to 12 (Transition).
 local FadeOverlay = {}
 FadeOverlay.__index = FadeOverlay
 
-function FadeOverlay.new(game, ow)
-  return setmetatable({ game = game, ow = ow, alpha = 0 }, FadeOverlay)
+function FadeOverlay.new(game, ow, color)
+  return setmetatable({
+    game = game, ow = ow, alpha = 0, color = color or "black",
+  }, FadeOverlay)
 end
 
 function FadeOverlay:update()
@@ -872,28 +980,51 @@ function FadeOverlay:update()
 end
 
 function FadeOverlay:draw()
-  love.graphics.setColor(0, 0, 0, self.alpha)
+  if self.color == "white" then
+    love.graphics.setColor(1, 1, 1, self.alpha)
+  else
+    love.graphics.setColor(0, 0, 0, self.alpha)
+  end
   love.graphics.rectangle("fill", 0, 0, 160, 144)
   love.graphics.setColor(1, 1, 1, 1)
 end
 
-function Commands.fade(ctx, dir, frames)
+local function parseFadeArgs(a, b)
+  local frames, color
+  if type(a) == "string" then
+    color = a
+    if type(b) == "number" then frames = b end
+  elseif type(a) == "number" then
+    frames = a
+    if type(b) == "string" then color = b end
+  end
+  color = color or "black"
+  if not frames then
+    frames = (color == "white") and 24 or 12
+  end
+  return frames, color
+end
+
+function Commands.fade(ctx, dir, framesOrColor, colorOrFrames)
   local ow = ctx.overworld
   if not ow then return end
   local runner = ctx.runner
-  frames = frames or 12 -- Transition's ramp length
+  local frames, color = parseFadeArgs(framesOrColor, colorOrFrames)
   local overlay = ow.fadeOverlay
   if dir == "out" then
     if not overlay then
-      overlay = FadeOverlay.new(ctx.game, ow)
+      overlay = FadeOverlay.new(ctx.game, ow, color)
       ow.fadeOverlay = overlay
       ctx.game.stack:push(overlay)
+    else
+      overlay.color = color
     end
     overlay.ramp = { from = overlay.alpha, to = 1, frames = frames, t = 0,
                      onDone = function() runner:resume() end }
     runner:yield()
   elseif dir == "in" then
     if not overlay then return end
+    overlay.color = color or overlay.color
     overlay.ramp = { from = overlay.alpha, to = 0, frames = frames, t = 0,
                      onDone = function() runner:resume() end }
     runner:yield()
@@ -981,9 +1112,10 @@ for _, verb in ipairs({ "show_text", "ask", "choice", "start_battle", "warp",
 end
 for _, verb in ipairs({ "show_text", "ask", "choice", "start_battle", "warp",
     "open_mart", "trade", "push_screen", "record_hall_of_fame",
-    "old_man_demo", "static_battle", "rival_battle", "give_item", "wait",
+    "old_man_demo", "static_battle", "rival_battle", "give_item",
+    "give_pokemon", "wait",
     "wait_flag", "move_player", "move_npc", "move_npc_to", "walk_npc",
-    "emote", "fade", "pan_camera" }) do
+    "emote", "fade", "pan_camera", "play_once" }) do
   local meta = Commands.meta[verb] or {}
   Commands.meta[verb] = meta
   meta.blocking = true

src/ui/BagMenu.lua

@@ -216,7 +216,9 @@ local function useOn(game, battle, id, target, list, moveIndex)
       consume(game, id)
       require("src.core.Sound").play(game.data, "Teleport_Exit1")
       ow.player.surfing = false
-      ow:warpToHealPoint()
+      -- EnterMapAnim on arrival (BIT_ESCAPE_WARP / special warp path);
+      -- blackouts omit arrive="teleport" (HandleBlackOut has no LeaveMapAnim)
+      ow:warpToHealPoint(nil, { arrive = "teleport" })
     else
       showMessages(game, { "OAK: " .. game.save.player.name
         .. "!\nThis isn't the\ntime to use that!" })
@@ -296,37 +298,52 @@ local function useOn(game, battle, id, target, list, moveIndex)
   showMessages(game, payload) -- failed
 end
 
+local function pickTargetAndUse(game, battle, id, list)
+  -- pick a target from the party
+  -- the ETHERs and PP UP open the move menu after picking a mon
+  -- (ItemUsePPRestore / ItemUsePPUp); the ELIXERs hit every move
+  local wantsMove = id == "ETHER" or id == "MAX_ETHER" or id == "PP_UP"
+  require("src.ui.Screens").push(game, "PartyMenu", {
+    pickOnly = true,
+    onSwitch = function(mon)
+      if not wantsMove then
+        useOn(game, battle, id, mon, list)
+        return
+      end
+      local rows = {}
+      for mi, mv in ipairs(mon.moves) do
+        local mdef = game.data.moves[mv.id]
+        table.insert(rows, {
+          value = mi,
+          label = mdef and mdef.name or mv.id,
+          right = ("%d"):format(mv.pp),
+        })
+      end
+      game.stack:push(ListMenu.new(game, "Which move?", rows, {
+        onChoose = function(row, l)
+          l:close()
+          useOn(game, battle, id, mon, list, row.value)
+        end,
+      }))
+    end,
+  })
+end
+
 local function useItem(game, battle, id, list)
   local def = game.data.items[id]
   if ItemEffects.needsTarget(id, def) and not ItemEffects.isBall(id) then
-    -- pick a target from the party
-    -- the ETHERs and PP UP open the move menu after picking a mon
-    -- (ItemUsePPRestore / ItemUsePPUp); the ELIXERs hit every move
-    local wantsMove = id == "ETHER" or id == "MAX_ETHER" or id == "PP_UP"
-    require("src.ui.Screens").push(game, "PartyMenu", {
-      pickOnly = true,
-      onSwitch = function(mon)
-        if not wantsMove then
-          useOn(game, battle, id, mon, list)
-          return
-        end
-        local rows = {}
-        for mi, mv in ipairs(mon.moves) do
-          local mdef = game.data.moves[mv.id]
-          table.insert(rows, {
-            value = mi,
-            label = mdef and mdef.name or mv.id,
-            right = ("%d"):format(mv.pp),
-          })
-        end
-        game.stack:push(ListMenu.new(game, "Which move?", rows, {
-          onChoose = function(row, l)
-            l:close()
-            useOn(game, battle, id, mon, list, row.value)
-          end,
-        }))
-      end,
-    })
+    -- TMs/HMs boot up and announce their move before the target picker
+    -- (ItemUseTMHM: BootedUpTMText / BootedUpHMText + TeachMachineMoveText)
+    if def and def.machine then
+      local moveDef = game.data.moves[def.machine.move]
+      local moveName = moveDef and moveDef.name or def.machine.move
+      local booted = def.machine.kind == "HM"
+        and "Booted up an HM!" or "Booted up a TM!"
+      showMessages(game, { booted, ("It contained\n%s!"):format(moveName) },
+        function() pickTargetAndUse(game, battle, id, list) end)
+      return
+    end
+    pickTargetAndUse(game, battle, id, list)
   else
     useOn(game, battle, id, nil, list)
   end

src/ui/BindingsMenu.lua

@@ -1,16 +1,19 @@
 -- Rebinding over the logical Game Boy buttons (gap C2's file-12 half,
 -- 12-ui-extensibility 4.4): one row per button, A arms a "PRESS A BUTTON"
 -- capture and the captured key or pad button lands in
--- save.options.bindings -- the overlay src/core/Bindings.lua
--- (04-mod-api-core) reads back over Input's fixed map.
+-- save.options.bindings, which Input:applyBindings layers over its fixed
+-- default map (see src/core/Input.lua and Game:applyOptions).
 
 local Font = require("src.render.Font")
 local ListMenu = require("src.ui.ListMenu")
+local Input = require("src.core.Input")
 
 local BindingsMenu = setmetatable({}, { __index = ListMenu })
 BindingsMenu.__index = BindingsMenu
 
--- Input.lua's map, primary key first where several keys share a button
+-- Input.lua's map, primary key first where several keys share a button.
+-- `pad` is the default SDL gamecontroller button (see Input.lua); shown
+-- on the SELECT row so controller Back/View is discoverable (#73).
 local BUTTONS = {
   { id = "up", label = "UP", key = "up" },
   { id = "down", label = "DOWN", key = "down" },
@@ -19,7 +22,7 @@ local BUTTONS = {
   { id = "a", label = "A", key = "z" },
   { id = "b", label = "B", key = "x" },
   { id = "start", label = "START", key = "escape" },
-  { id = "select", label = "SELECT", key = "rshift" },
+  { id = "select", label = "SELECT", key = "tab", pad = "back" },
 }
 
 -- a binding is a plain key string or { key, pad }; absent = the fixed
@@ -31,13 +34,29 @@ local function boundKey(overlay, def)
   return def.key
 end
 
+local function boundPad(overlay, def)
+  local b = overlay and overlay[def.id]
+  if type(b) == "table" and b.pad then return b.pad end
+  return def.pad
+end
+
+-- Key column for every row. SELECT also appends "/PAD" (default BACK)
+-- so controller Select/View is visible without opening a second legend.
+local function boundRight(overlay, def)
+  local key = boundKey(overlay, def)
+  if def.id ~= "select" then return key:upper() end
+  local pad = boundPad(overlay, def)
+  if pad then return (key .. "/" .. pad):upper() end
+  return key:upper()
+end
+
 function BindingsMenu.new(game)
   local overlay = game.save and game.save.options
                   and game.save.options.bindings
   local items = {}
   for i, def in ipairs(BUTTONS) do
     items[i] = { label = def.label,
-                 right = boundKey(overlay, def):upper(), button = def }
+                 right = boundRight(overlay, def), button = def }
   end
   local self = setmetatable(ListMenu.new(game, "CONTROLS", items, {}),
                             BindingsMenu)
@@ -77,7 +96,8 @@ function BindingsMenu:storeBinding(slot, value)
   end
   b[slot] = value
   opts.bindings[item.button.id] = b
-  item.right = boundKey(opts.bindings, item.button):upper()
+  item.right = boundRight(opts.bindings, item.button)
+  Input:applyBindings(opts.bindings)
   if game.writeOptions then game:writeOptions() end
 end
 

src/ui/BoxMenu.lua

@@ -145,6 +145,10 @@ end
 
 function BoxMenu.new(game)
   Boxes.ensure(game.save)
+  -- bills_pc.asm BillsPCMenu: TextBoxBorder at (0,0) with interior
+  -- 12x10 → total 14x12.  "CHANGE BOX" is 10 tiles and needs the
+  -- full interior (cursor col + label); the old tw=12 right-side box
+  -- drew the final glyph on the border.
   return Menu.new(game, {
     { label = "WITHDRAW", onSelect = function() withdraw(game) end },
     { label = "DEPOSIT", onSelect = function() deposit(game) end },
@@ -153,7 +157,7 @@ function BoxMenu.new(game)
     { label = "SEE YA!" },
     -- Bill's PC runs silent end to end (BIT_NO_MENU_BUTTON_SOUND,
     -- engine/menus/pokemon_pc.asm)
-  }, { tx = 8, ty = 0, tw = 12, th = 12, noSound = true })
+  }, { tx = 0, ty = 0, tw = 14, th = 12, noSound = true })
 end
 
 return BoxMenu

src/ui/Credits.lua

@@ -217,7 +217,8 @@ function Credits:update(dt)
     self.timer = FADE_FRAMES
   elseif self.phase == "end_fade" then
     -- Credits returns to HallOfFameResetEventsAndSaveScript here: the
-    -- save happens now, then 5 x 120 DelayFrames before the button wait
+    -- save (plus post-game home relocate, #103) happens now, then
+    -- 5 x 120 DelayFrames before the button wait
     if self.onTheEnd then self.onTheEnd() end
     self.phase = "end_hold"
     self.timer = 600

src/ui/DexEntryMenu.lua

@@ -1,5 +1,11 @@
 -- Pokédex entry page: front sprite, kind, height/weight and the real
 -- dex description (data/pokemon/dex_entries.asm + dex_text.asm).
+--
+-- `species` may be a species id string, or a table
+-- `{ species = id, forceOwned = true }`.  forceOwned mirrors pret's
+-- StarterDex (engine/events/starter_dex.asm), which temporarily sets the
+-- owned bit so Oak's lab ball previews show height/weight/description
+-- without permanently marking the mon owned.
 
 local Font = require("src.render.Font")
 
@@ -16,8 +22,17 @@ function DexEntryMenu:sgbPalettes(game)
            P.zone(P.monPal(game.data, self.def and self.def.id), 1, 1, 8, 8) }
 end
 
-function DexEntryMenu.new(game, species)
-  local self = setmetatable({ game = game }, DexEntryMenu)
+local function resolveArgs(speciesOrOpts)
+  if type(speciesOrOpts) == "table" then
+    return speciesOrOpts.species or speciesOrOpts[1],
+           speciesOrOpts.forceOwned and true or false
+  end
+  return speciesOrOpts, false
+end
+
+function DexEntryMenu.new(game, speciesOrOpts)
+  local species, forceOwned = resolveArgs(speciesOrOpts)
+  local self = setmetatable({ game = game, forceOwned = forceOwned }, DexEntryMenu)
   self.def = game.data.pokemon[species]
   local ok, img = pcall(love.graphics.newImage, self.def.spriteFront)
   self.sprite = ok and img or nil
@@ -42,12 +57,16 @@ function DexEntryMenu:draw()
   love.graphics.setColor(0, 0, 0, 1)
   Font.draw(def.name, 72, 8)
   local e = def.dexEntry or {}
-  Font.draw((e.kind or "?") .. " POKéMON", 72, 20)
+  -- English R/B prints only the kind string (hlcoord 9,4 PlaceString).
+  -- PokeText ("#"/POKéMON) is an unreferenced JPN leftover in pokedex.asm;
+  -- appending " POKéMON" here clipped longer kinds ("LIZARD POKé").
+  Font.draw(e.kind or "?", 72, 20)
   -- same number width as the list (constants.dexDigits), so a dex past 999
   -- prints the extra digit everywhere at once
   local digits = (self.game.data.constants or {}).dexDigits or 3
   Font.draw(("No.%0" .. digits .. "d"):format(def.dex or 0), 72, 32)
-  local owned = self.game.save.pokedex and self.game.save.pokedex.owned[def.id]
+  local owned = self.forceOwned
+    or (self.game.save.pokedex and self.game.save.pokedex.owned[def.id])
   -- height/weight print only once owned, like the description
   -- (pokedex.asm: "if the pokemon has not been owned, don't print the
   -- height, weight, or description")

src/ui/EvolutionState.lua

@@ -5,6 +5,7 @@
 -- has no cancel; the flash always completes).
 
 local Font = require("src.render.Font")
+local Music = require("src.core.Music")
 
 local EvolutionState = {}
 EvolutionState.__index = EvolutionState
@@ -39,6 +40,7 @@ function EvolutionState.new(game, mon, newSpecies, onDone)
   self.newSprite = frontSprite(game, newSpecies)
   self.t = 0
   self.done = false
+  Music.play(game.data, Music.special(game.data, "evolution"))
   return self
 end
 
@@ -57,6 +59,7 @@ function EvolutionState:update(dt)
       ("Congratulations!\nYour %s\nevolved into\n%s!")
         :format(self.oldName, newName),
       function()
+        Music.restoreMap(game.data)
         game.stack:pop() -- the evolution screen itself
         if self.onDone then self.onDone() end
       end))

src/ui/HallOfFame.lua

@@ -1,14 +1,16 @@
 -- Hall of Fame induction (engine/movie/hall_of_fame.asm): each party
--- member's front sprite scrolls onto the screen (HoFShowMonOrPlayer's
--- .ScrollPic), then its name/level shows and its cry plays
--- (HoFDisplayAndRecordMonInfo).  After the last mon, HoFDisplayPlayerStats
--- shows the trainer name, play time, money and Prof. Oak's dex rating.
--- Plays Music_HallOfFame when the audio data has it.  Calls onDone() after
--- popping itself.
+-- member's front sprite scrolls onto the right side of the screen
+-- (HoFShowMonOrPlayer's .ScrollPic), then HoFDisplayMonInfo draws the
+-- left-side LEVEL/TYPE box, plays the cry, holds, and pops the bottom
+-- "HALL OF FAME" text box before fading to the next mon.  After the
+-- party, the player pic scrolls in and HoFDisplayPlayerStats shows the
+-- name/time/money boxes plus the dex rating.  Plays Music_HallOfFame
+-- when the audio data has it.  Calls onDone() after popping itself.
 
 local Font = require("src.render.Font")
 local Music = require("src.core.Music")
 local Sound = require("src.core.Sound")
+local TypeChart = require("src.battle.TypeChart")
 
 local HallOfFame = {}
 HallOfFame.__index = HallOfFame
@@ -17,6 +19,10 @@ HallOfFame.isOpaque = true
 -- SGB: SetPal_PokemonWholeScreen for the mon on display
 function HallOfFame:sgbPalettes(game)
   local P = require("src.render.PaletteFX")
+  if self.phase == "player" or self.phase == "player_stats"
+      or self.phase == "player_dex" or self.phase == "player_rating" then
+    return P.wholeNamed(game.data, "MEWMON")
+  end
   local mon = game.save.party[self.index or 0]
   if mon then
     local c = P.monPal(game.data, mon.species)
@@ -26,17 +32,20 @@ function HallOfFame:sgbPalettes(game)
   return P.wholeNamed(game.data, "MEWMON")
 end
 
-local MON_FRAMES = 150 -- ~2.5s per inductee (A advances early)
-
 -- HoFShowMonOrPlayer's .ScrollPic: hSCX is nudged by e = 4px per
--- DelayFrame (doubled on SGB) until it settles.  The back pic (an
--- enlarged, blurred 2x scale of the back sprite) sweeps right-to-left
--- and off the left edge first; tracing the actual hSCX/hSCY math shows
--- the real front pic that follows enters from the *left* edge and
--- slides *right* into its resting tile, at that same 4px/frame rate --
--- that's the half we port here (the back-pic wipe is a VRAM/scroll-
--- register trick with no equivalent in this sprite-based renderer).
+-- DelayFrame (doubled on SGB) until it settles.  The front pic rests at
+-- hlcoord 12,5 (engine/movie/hall_of_fame.asm HoFLoadMonPlayerPicTileIDs).
 local SCROLL_SPEED = 4 -- px/frame @ 60fps
+local PIC_X, PIC_Y = 12 * 8, 5 * 8
+
+-- After HoFDisplayAndRecordMonInfo: 80 DelayFrames, then the bottom
+-- HALL OF FAME box for 180 DelayFrames, then GBFadeOutToWhite.
+local INFO_HOLD = 80
+local HOF_HOLD = 180
+local FADE_FRAMES = 20
+
+-- HoFPrintTextAndDelay after each dex line
+local DEX_HOLD = 120
 
 local function tryImage(path)
   if not path then return nil end
@@ -57,7 +66,7 @@ local function drawTextBlock(text, x, y, maxY)
   for line in (text:gsub("\v", "\n"):gsub("\f", "\n") .. "\n"):gmatch("(.-)\n") do
     if maxY and y > maxY then break end
     Font.draw(line, x, y)
-    y = y + 10
+    y = y + 8
   end
   return y
 end
@@ -70,6 +79,10 @@ function HallOfFame.new(game, onDone)
   self.timer = 0
   self.phase = "mons"
   self.sprites = {} -- species -> image or false
+  self.playerPic = tryImage("assets/generated/trainer_card/red.png")
+  self.scrollX = PIC_X
+  self.showHofBanner = false
+  self.fade = 0
   return self
 end
 
@@ -84,16 +97,21 @@ end
 function HallOfFame:nextMon()
   self.index = self.index + 1
   local mon = self.game.save.party[self.index]
+  self.showHofBanner = false
+  self.fade = 0
   if mon then
-    self.timer = MON_FRAMES
+    self.phase = "mons"
+    self.timer = INFO_HOLD
     Sound.playCry(self.game.data, mon.species)
-    -- scroll the new inductee's pic in from the left (see SCROLL_SPEED)
     local sprite = self:spriteFor(mon.species)
-    local w = sprite and sprite:getWidth() or 0
-    self.scrollRestX = math.floor((160 - w) / 2)
+    local w = sprite and sprite:getWidth() or 56
     self.scrollX = -w
   else
-    self.phase = "congrats"
+    -- HoFShowMonOrPlayer with wHoFMonOrPlayer = player
+    self.phase = "player"
+    self.timer = 0
+    local w = self.playerPic and self.playerPic:getWidth() or 56
+    self.scrollX = -w
   end
 end
 
@@ -117,77 +135,184 @@ function HallOfFame:dexSeenOwned()
   return seen, owned
 end
 
-function HallOfFame:update(dt)
-  local input = self.game.input
-  if self.phase == "mons" then
-    if self.scrollX and self.scrollX < self.scrollRestX then
-      self.scrollX = math.min(self.scrollRestX, self.scrollX + SCROLL_SPEED)
-    end
-    self.timer = self.timer - 1
-    if input:wasPressed("a") or self.timer <= 0 then
-      self:nextMon()
-    end
-  elseif input:wasPressed("a") then
-    Sound.play(self.game.data, "Press_AB")
-    self.game.stack:pop()
-    if self.onDone then self.onDone() end
+function HallOfFame:advanceMonPhase()
+  if self.phase == "mons" and not self.showHofBanner then
+    -- 80-frame info hold done: TextBoxBorder at (2,13) + "HALL OF FAME"
+    self.showHofBanner = true
+    self.timer = HOF_HOLD
+  elseif self.phase == "mons" then
+    self.phase = "fade"
+    self.timer = FADE_FRAMES
+    self.fade = 0
+  elseif self.phase == "fade" then
+    self:nextMon()
   end
 end
 
-function HallOfFame:draw()
-  love.graphics.setColor(1, 1, 1, 1)
-  love.graphics.rectangle("fill", 0, 0, 160, 144)
-  love.graphics.setColor(0, 0, 0, 1)
-  if self.phase == "mons" then
-    Font.draw("HALL OF FAME", (160 - 12 * 8) / 2, 8)
-    local mon = self.game.save.party[self.index]
-    if mon then
-      local def = self.game.data.pokemon[mon.species]
-      love.graphics.setColor(1, 1, 1, 1)
-      local sprite = self:spriteFor(mon.species)
-      if sprite then
-        local w, h = sprite:getDimensions()
-        love.graphics.draw(sprite, self.scrollX or math.floor((160 - w) / 2), 96 - h)
-      end
-      love.graphics.setColor(0, 0, 0, 1)
-      local name = mon.nickname or (def and def.name) or mon.species
-      Font.draw(name, 32, 108)
-      Font.draw((":L%d"):format(mon.level), 112, 108)
-    end
-  else
-    -- HoFDisplayPlayerStats (no "HALL OF FAME" banner here -- the real
-    -- screen is a fresh ClearScreen): trainer name, play time, money,
-    -- then the POKéDEX seen/owned tally and Prof. Oak's rating text,
-    -- using the same real save-data fields as TrainerCard.lua
-    -- (save.player.name/playTime/money) and PokedexMenu.lua/
-    -- OverworldController:dexRating (save.pokedex.seen/owned).
-    local save = self.game.save
-    local text = self.game.data.text or {}
-    local y = 8
-    Font.draw(save.player.name or "RED", 8, y)
-    y = y + 16
-    local t = math.floor(save.playTime or 0)
-    Font.draw(("PLAY TIME %3d:%02d"):format(math.floor(t / 3600),
-                                            math.floor(t / 60) % 60), 8, y)
-    y = y + 12
-    Font.draw(("MONEY ¥%d"):format(save.money or 0), 8, y)
-    y = y + 16
+function HallOfFame:update(dt)
+  local input = self.game.input
+  local skip = input:wasPressed("a")
 
+  if self.phase == "mons" or self.phase == "fade" then
+    if self.phase == "mons" and self.scrollX < PIC_X then
+      self.scrollX = math.min(PIC_X, self.scrollX + SCROLL_SPEED)
+      return
+    end
+    if self.phase == "fade" then
+      self.timer = self.timer - 1
+      self.fade = 1 - math.max(0, self.timer) / FADE_FRAMES
+      if self.timer <= 0 or skip then self:advanceMonPhase() end
+      return
+    end
+    self.timer = self.timer - 1
+    if skip or self.timer <= 0 then
+      self:advanceMonPhase()
+    end
+  elseif self.phase == "player" then
+    if self.scrollX < PIC_X then
+      self.scrollX = math.min(PIC_X, self.scrollX + SCROLL_SPEED)
+      return
+    end
+    self.phase = "player_stats"
+    self.timer = DEX_HOLD
+  elseif self.phase == "player_stats" then
+    -- name / play time / money boxes are up; then DexSeenOwnedText
+    self.timer = self.timer - 1
+    if skip or self.timer <= 0 then
+      self.phase = "player_dex"
+      self.timer = DEX_HOLD
+    end
+  elseif self.phase == "player_dex" then
+    self.timer = self.timer - 1
+    if skip or self.timer <= 0 then
+      self.phase = "player_rating"
+      self.timer = DEX_HOLD
+    end
+  elseif self.phase == "player_rating" then
+    self.timer = self.timer - 1
+    if skip or self.timer <= 0 then
+      -- HoFFadeOutScreenAndMusic -> Credits lead-in (no A wait here)
+      self.game.stack:pop()
+      if self.onDone then self.onDone() end
+    end
+  end
+end
+
+-- HoFDisplayMonInfo: TextBoxBorder (0,2) b=9,c=10 + LEVEL/TYPE labels
+function HallOfFame:drawMonInfo(mon)
+  local def = self.game.data.pokemon[mon.species]
+  Font.drawBox(0, 2, 12, 11)
+  love.graphics.setColor(0, 0, 0, 1)
+  local name = mon.nickname or (def and def.name) or mon.species
+  Font.draw(name, 1 * 8, 4 * 8)
+  Font.draw("LEVEL/", 2 * 8, 6 * 8)
+  Font.draw("TYPE1/", 2 * 8, 7 * 8)
+  local t1 = def and def.types and def.types[1]
+  local t2 = def and def.types and def.types[2]
+  local dual = t2 and t2 ~= t1
+  if dual then
+    Font.draw("TYPE2/", 2 * 8, 8 * 8)
+  end
+  -- PrintLevelCommon at (8,7): bare level digits (no <LV> tile here)
+  Font.draw(tostring(mon.level), 8 * 8, 7 * 8)
+  -- PrintMonType at (3,9) / +2 rows for type 2
+  if t1 then
+    Font.draw(TypeChart.displayName(t1), 3 * 8, 9 * 8)
+  end
+  if dual then
+    Font.draw(TypeChart.displayName(t2), 3 * 8, 11 * 8)
+  end
+end
+
+-- Bottom HALL OF FAME banner: TextBoxBorder (2,13) b=3,c=14
+function HallOfFame:drawHofBanner()
+  Font.drawBox(2, 13, 16, 5)
+  love.graphics.setColor(0, 0, 0, 1)
+  Font.draw("HALL OF FAME", 4 * 8, 15 * 8)
+end
+
+function HallOfFame:drawPic(img)
+  if not img then return end
+  love.graphics.setColor(1, 1, 1, 1)
+  love.graphics.draw(img, self.scrollX or PIC_X, PIC_Y)
+end
+
+-- HoFDisplayPlayerStats boxes + labels (player pic already on the right)
+function HallOfFame:drawPlayerStats()
+  local save = self.game.save
+  -- name box: TextBoxBorder (5,0) b=2,c=9 → drawBox(5,0,11,4)
+  Font.drawBox(5, 0, 11, 4)
+  love.graphics.setColor(0, 0, 0, 1)
+  Font.draw(save.player.name or "RED", 7 * 8, 2 * 8)
+
+  -- play time / money box: TextBoxBorder (0,4) b=6,c=10 → drawBox(0,4,12,8)
+  Font.drawBox(0, 4, 12, 8)
+  love.graphics.setColor(0, 0, 0, 1)
+  Font.draw("PLAY TIME", 1 * 8, 6 * 8)
+  local t = math.floor(save.playTime or 0)
+  Font.draw(("%3d:%02d"):format(math.floor(t / 3600), math.floor(t / 60) % 60),
+            5 * 8, 7 * 8)
+  Font.draw("MONEY", 1 * 8, 9 * 8)
+  -- PrintBCDNumber with MONEY_SIGN; port uses ¥ like TrainerCard
+  Font.draw(("¥%d"):format(save.money or 0), 4 * 8, 10 * 8)
+end
+
+function HallOfFame:drawDexBox(kind)
+  local save = self.game.save
+  local text = self.game.data.text or {}
+  Font.drawBox(0, 12, 20, 6)
+  love.graphics.setColor(0, 0, 0, 1)
+  if kind == "seen" then
     local seen, owned = self:dexSeenOwned()
     local seenOwned = text._DexSeenOwnedText
       or "POKéDEX   Seen:{NUM:wDexRatingNumMonsSeen, 1, 3}\n         Owned:{NUM:wDexRatingNumMonsOwned, 1, 3}"
     seenOwned = seenOwned
       :gsub("{NUM:wDexRatingNumMonsSeen[^}]*}", tostring(seen))
       :gsub("{NUM:wDexRatingNumMonsOwned[^}]*}", tostring(owned))
-    y = drawTextBlock(seenOwned, 8, y) + 6
-
+    drawTextBlock(seenOwned, 1 * 8, 14 * 8, 17 * 8)
+  else
+    local _, owned = self:dexSeenOwned()
     local ratingHeader = (text._DexRatingText or "POKéDEX Rating{COLON}"):gsub("{COLON}", ":")
-    Font.draw(ratingHeader, 8, y)
-    y = y + 12
-
+    Font.draw(ratingHeader, 1 * 8, 14 * 8)
     local rating = text[dexRatingKey(owned)] or "Keep it up!"
-    drawTextBlock(rating, 8, y, 136)
+    drawTextBlock(rating, 1 * 8, 15 * 8, 17 * 8)
   end
+end
+
+function HallOfFame:draw()
+  love.graphics.setColor(1, 1, 1, 1)
+  love.graphics.rectangle("fill", 0, 0, 160, 144)
+
+  if self.phase == "mons" or self.phase == "fade" then
+    local mon = self.game.save.party[self.index]
+    if mon then
+      self:drawPic(self:spriteFor(mon.species))
+      if self.scrollX >= PIC_X then
+        self:drawMonInfo(mon)
+        if self.showHofBanner then
+          self:drawHofBanner()
+        end
+      end
+    end
+    if self.phase == "fade" and self.fade > 0 then
+      love.graphics.setColor(1, 1, 1, self.fade)
+      love.graphics.rectangle("fill", 0, 0, 160, 144)
+    end
+  elseif self.phase == "player" then
+    self:drawPic(self.playerPic)
+  elseif self.phase == "player_stats" then
+    self:drawPic(self.playerPic)
+    self:drawPlayerStats()
+  elseif self.phase == "player_dex" then
+    self:drawPic(self.playerPic)
+    self:drawPlayerStats()
+    self:drawDexBox("seen")
+  elseif self.phase == "player_rating" then
+    self:drawPic(self.playerPic)
+    self:drawPlayerStats()
+    self:drawDexBox("rating")
+  end
+
   love.graphics.setColor(1, 1, 1, 1)
 end
 

src/ui/ListMenu.lua

@@ -117,7 +117,7 @@ function ListMenu:draw()
       love.graphics.setColor(0, 0, 0, 1)
     end
     if item.right then
-      Font.draw(item.right, 160 - 8 - #item.right * 8, y)
+      Font.draw(item.right, 160 - 8 - Font.width(item.right), y)
     end
     if i == self.index then
       -- hollowIndex: a chosen row keeps the hollow '▷' left behind by
@@ -136,7 +136,7 @@ function ListMenu:draw()
     Font.drawBox(11, 0, 9, 3)
     love.graphics.setColor(0, 0, 0, 1)
     local money = ("¥%d"):format(self.money and self.money() or 0)
-    Font.draw(money, 152 - #money * 8, 8)
+    Font.draw(money, 152 - Font.width(money), 8)
     -- the clerk's line in the standard bottom text box; long prompts
     -- wrap and keep their last two lines, like the GB's scrolled box
     Font.drawBox(0, 12, 20, 6)
@@ -153,7 +153,17 @@ function ListMenu:draw()
       end
     end
   elseif self.footer then
-    Font.draw(self.footer, 8, 136)
+    -- PC deposit/withdraw footers use "\n"; draw the last two lines so
+    -- long item names are not clipped at the screen edge (#115).
+    local flat = {}
+    for _, page in ipairs(require("src.render.TextBox").paginate(self.footer)) do
+      for _, line in ipairs(page) do flat[#flat + 1] = line end
+    end
+    local y = (#flat >= 2) and 120 or 136
+    for i = math.max(1, #flat - 1), #flat do
+      Font.draw(flat[i], 8, y)
+      y = y + 16
+    end
   end
   love.graphics.setColor(1, 1, 1, 1)
 end

src/ui/Menu.lua

@@ -19,7 +19,16 @@ function Menu.new(game, items, opts)
   self.tx = opts.tx or 10
   self.ty = opts.ty or 0
   self.tw = opts.tw or 10
-  self.th = opts.th or (#items * 2 + 2)
+  self.rowStep = opts.rowStep or 2
+  -- maxVisible: cap the box to this many rows and scroll the rest instead
+  -- of growing past it (e.g. the start menu, whose row count varies with
+  -- save state and mod hooks); nil/unset keeps every caller's old
+  -- behavior of sizing the box to fit all items.
+  self.maxVisible = opts.maxVisible
+  self.scroll = 0
+  local visible = (self.maxVisible and math.min(self.maxVisible, #items))
+    or #items
+  self.th = opts.th or (visible * self.rowStep + 2)
   self.cancelable = opts.cancelable ~= false
   -- Whether START closes the menu.  In pokered a menu responds only to the
   -- keys in its wMenuWatchedKeys mask; the common PAD_A | PAD_B (and the
@@ -31,9 +40,25 @@ function Menu.new(game, items, opts)
   -- BIT_NO_MENU_BUTTON_SOUND (wMiscFlags): the PC session runs its
   -- menus silent (home/window.asm HandleMenuInput_)
   self.noSound = opts.noSound or false
+  self:clampScroll()
   return self
 end
 
+-- keeps self.index inside the visible [scroll+1, scroll+maxVisible] window;
+-- callers that move self.index directly (e.g. restoring a saved cursor
+-- position) should call this afterwards to scroll it into view
+function Menu:clampScroll()
+  if not (self.maxVisible and #self.items > self.maxVisible) then
+    self.scroll = 0
+    return
+  end
+  if self.index - self.scroll > self.maxVisible then
+    self.scroll = self.index - self.maxVisible
+  elseif self.index - self.scroll < 1 then
+    self.scroll = self.index - 1
+  end
+end
+
 function Menu:update(dt)
   local input = self.game.input
   if input:wasPressed("up") then
@@ -61,15 +86,29 @@ function Menu:update(dt)
     self.game.stack:pop()
     if self.onCancel then self.onCancel() end
   end
+  self:clampScroll()
 end
 
 function Menu:draw()
   Font.drawBox(self.tx, self.ty, self.tw, self.th)
   love.graphics.setColor(0, 0, 0, 1)
-  for i, item in ipairs(self.items) do
-    Font.draw(item.label, (self.tx + 2) * 8, (self.ty + i * 2 - 1) * 8)
+  local visible = (self.maxVisible and math.min(self.maxVisible, #self.items))
+    or #self.items
+  for row = 1, visible do
+    local item = self.items[self.scroll + row]
+    if not item then break end
+    Font.draw(item.label, (self.tx + 2) * 8,
+      (self.ty + row * self.rowStep - (self.rowStep - 1)) * 8)
+  end
+  local cursorRow = self.index - self.scroll
+  Font.drawCode(Theme.cursor, (self.tx + 1) * 8,
+    (self.ty + cursorRow * self.rowStep - (self.rowStep - 1)) * 8)
+  -- moreArrow ($EE): the same "more below" glyph OptionRows/ManagerState
+  -- use, sat on the bottom border like TextBox's page-advance cursor
+  if self.maxVisible and self.scroll + self.maxVisible < #self.items then
+    Font.drawCode(Theme.moreArrow, (self.tx + self.tw - 2) * 8,
+      (self.ty + self.th - 2) * 8)
   end
-  Font.drawCode(Theme.cursor, (self.tx + 1) * 8, (self.ty + self.index * 2 - 1) * 8)
   love.graphics.setColor(1, 1, 1, 1)
 end
 

src/ui/OakSpeech.lua

@@ -16,6 +16,11 @@ local OakSpeech = {}
 OakSpeech.__index = OakSpeech
 OakSpeech.isOpaque = true
 
+-- FadeInIntroPic runs a 6-step palette fade; MovePicLeft wipes the mon
+-- sprite in from the right.  Both play out before the beat's text prints.
+local FADE_FRAMES = 24
+local WIPE_FRAMES = 32
+
 -- naming presets are boot config (field.boot.namePresets), which a total
 -- conversion replaces; the Red/Blue lists remain the fallback
 local function namePresets(game, who, fallback)
@@ -93,16 +98,23 @@ function OakSpeech:say(key, next)
 end
 
 local STEPS = {
-  -- 1. Oak's welcome
+  -- 1. Oak's welcome (Oak's pic fades in first, FadeInIntroPic)
   function(self)
     self.pic = self.oakPic
-    self:say("_OakSpeechText1", function() self:advance() end)
+    self:revealPic("fade", function()
+      self:say("_OakSpeechText1", function() self:advance() end)
+    end)
   end,
-  -- 2. NIDORINO show-off, with its cry
+  -- 2. NIDORINO show-off: the front sprite is mirrored horizontally
+  --    (LoadFlippedFrontSpriteByMonIndex) and wipes in from the right
+  --    (MovePicLeft), then its cry sounds and the text prints
   function(self)
     self.pic = self.demoPic
-    Sound.playCry(self.game.data, self.demoSpecies)
-    self:say("_OakSpeechText2A", function() self:advance() end)
+    self.picFlip = true
+    self:revealPic("wipe", function()
+      Sound.playCry(self.game.data, self.demoSpecies)
+      self:say("_OakSpeechText2A", function() self:advance() end)
+    end)
   end,
   -- 3. the rest of the world-of-POKéMON spiel
   function(self)
@@ -175,8 +187,21 @@ function OakSpeech:lastPageLines(key)
   return ok and lines or nil
 end
 
+-- Reveal the current pic over `dur` frames, then run `next`.  Ticked from
+-- update() while OakSpeech is the top state (before the beat's text box is
+-- pushed), so the fade/wipe plays out ahead of the text like the ROM.
+function OakSpeech:revealPic(kind, next)
+  self.picReveal = {
+    kind = kind,
+    t = 0,
+    dur = kind == "fade" and FADE_FRAMES or WIPE_FRAMES,
+    next = next,
+  }
+end
+
 function OakSpeech:advance()
   self.step = self.step + 1
+  self.picFlip = false
   local fn = STEPS[self.step]
   if fn then
     fn(self)
@@ -205,6 +230,15 @@ end
 --                 ClearScreenArea / wUpdateSpritesEnabled; ld c, 50)
 --   frames 79-102 GBFadeOutToWhite          (3 palettes x 8 frames)
 function OakSpeech:update(dt)
+  local r = self.picReveal
+  if r then
+    r.t = r.t + 1
+    if r.t >= r.dur then
+      self.picReveal = nil
+      if r.next then r.next() end
+    end
+    return
+  end
   if not self.shrink then return end
   local s = self.shrink
   s.frame = s.frame + 1
@@ -238,7 +272,23 @@ function OakSpeech:draw()
     local w, h = self.pic:getDimensions()
     local x = 48 + math.floor((8 - w / 8) / 2) * 8
     local y = 32 + (7 - h / 8) * 8
-    love.graphics.draw(self.pic, x, y)
+    local reveal = self.picReveal
+    local off = 0
+    if reveal and reveal.kind == "fade" then
+      -- FadeInIntroPic: ramp the pic's alpha up over the fade window
+      love.graphics.setColor(1, 1, 1, math.min(1, reveal.t / reveal.dur))
+    elseif reveal and reveal.kind == "wipe" then
+      -- MovePicLeft: the pic slides in from the right edge to its spot
+      off = math.floor((160 - x) * (1 - math.min(1, reveal.t / reveal.dur)))
+    end
+    if self.picFlip then
+      -- LoadFlippedFrontSpriteByMonIndex mirrors the front sprite
+      -- horizontally (wSpriteFlipped): draw with a negative x scale
+      love.graphics.draw(self.pic, x + off + w, y, 0, -1, 1)
+    else
+      love.graphics.draw(self.pic, x + off, y)
+    end
+    love.graphics.setColor(1, 1, 1, 1)
   end
   if self.walkVisible and self.walkSheet then
     -- ResetPlayerSpriteData: Y screen pos $3c, X screen pos $40

src/ui/OptionsMenu.lua

@@ -13,6 +13,7 @@ local Tilt = require("src.render.Tilt")
 local GBCFX = require("src.render.GBCFX")
 local GameSpeed = require("src.core.GameSpeed")
 local VideoMode = require("src.core.VideoMode")
+local FrameCap = require("src.core.FrameCap")
 local Logger = require("src.core.Logger")
 local Runtime = require("src.mods.Runtime")
 local OptionRows = require("src.ui.OptionRows")
@@ -21,6 +22,14 @@ local OptionsMenu = {}
 OptionsMenu.__index = OptionsMenu
 OptionsMenu.isOpaque = true
 
+-- Opaque full-screen menu: own MEWMON so opening OPTION from the title
+-- (or over the overworld) does not inherit TitleState's LOGO1 band -- that
+-- zone covers UI rows 8-9, which is the third options box label line
+-- (pink "MODS" strip when Blue's ROM LOGO1 white is {255,239,255}).
+function OptionsMenu:sgbPalettes(game)
+  return PaletteFX.wholeNamed(game.data, "MEWMON")
+end
+
 -- TextSpeedOptionData frame delays with the original labels
 local SPEEDS = { { 1, "FAST" }, { 3, "MEDIUM" }, { 5, "SLOW" } }
 -- no-loader fallback for the ruleset row, same pair BattleState keeps
@@ -101,7 +110,7 @@ local function sameRows(_, rows) return rows end
 -- the vanilla rows as descriptors; each step body is the old per-index
 -- ladder's, so the save.options mutations are unchanged
 local function buildRows(game)
-  return {
+  local rows = {
     { id = "textSpeed", label = "TEXT SPEED",
       value = function(g) return SPEEDS[speedIndex(g)][2] end,
       step = function(g)
@@ -202,6 +211,19 @@ local function buildRows(game)
         VideoMode.apply(o.videoMode)
         return true
       end },
+    -- hard render cap (issue #88): bounds the present rate so a
+    -- driver-forced vsync-off run cannot spin at thousands of FPS.  Logic
+    -- is fixed-step off dt, so this touches presentation only.
+    { id = "fpsCap", label = "MAX FPS",
+      value = function(g)
+        return FrameCap.label(g.save.options.fpsCap)
+      end,
+      step = function(g, dir)
+        local o = g.save.options
+        o.fpsCap = FrameCap.cycle(o.fpsCap, dir)
+        FrameCap.apply(o.fpsCap)
+        return true
+      end },
     -- fast-forward the logic clock only; music and sfx keep their tempo
     -- (src/core/GameSpeed.lua), so this is safe to leave on
     { id = "speed", label = "GAME SPEED",
@@ -230,6 +252,15 @@ local function buildRows(game)
         require("src.ui.Screens").push(g, "BindingsMenu")
       end },
   }
+  -- issue #136: hide GBC FX on Android/iOS -- the present shader soft-bricks
+  if not GBCFX.isSupported() then
+    local filtered = {}
+    for _, row in ipairs(rows) do
+      if row.id ~= "gbcfx" then filtered[#filtered + 1] = row end
+    end
+    rows = filtered
+  end
+  return rows
 end
 
 function OptionsMenu.new(game)

src/ui/PartyMenu.lua

@@ -11,6 +11,8 @@ local Logger = require("src.core.Logger")
 local Runtime = require("src.mods.Runtime")
 local Screens = require("src.ui.Screens")
 local Theme = require("src.ui.Theme")
+local FieldDefaults = require("src.world.FieldDefaults")
+local Map = require("src.world.Map")
 
 local PartyMenu = {}
 PartyMenu.__index = PartyMenu
@@ -69,10 +71,26 @@ local function drawIcon(game, mon, x, y, selected, counter)
   local icons = game.data.icons
   if not icons then return end
   local def = game.data.pokemon[mon.species]
-  -- byDex is the vanilla lookup, but the icons registry can bring the table
-  -- into existence on its own, so it may be the only key present
-  local name = def and def.dex and icons.byDex and icons.byDex[def.dex]
-  local path = name and icons.icons[name]
+  -- Per-species override first: the icons registry folds into
+  -- icons.bySpecies, and a pokemon record may carry its own `icon` field.
+  -- Either is a built-in icon name (resolved through icons.icons) or a
+  -- { image = <path>, frames? } table pointing at bundled art. Falling
+  -- through to icons.byDex[def.dex] keeps the vanilla dex-indexed default;
+  -- without the override a modded or dex-renumbered species could never
+  -- change its menu icon.
+  local entry = (icons.bySpecies and icons.bySpecies[mon.species])
+             or (def and def.icon)
+  local name, path
+  if type(entry) == "string" then
+    name = entry
+    path = icons.icons and icons.icons[entry]
+  elseif type(entry) == "table" then
+    path = entry.image
+  end
+  if not path then
+    name = def and def.dex and icons.byDex and icons.byDex[def.dex]
+    path = name and icons.icons and icons.icons[name]
+  end
   if not path then return end
   if iconImages[path] == nil then
     local ok, img = pcall(love.graphics.newImage, path)
@@ -182,12 +200,13 @@ function PartyMenu:update(dt)
           -- and music return first (PlayDefaultMusic +
           -- LoadWalkingPlayerSpriteGraphics), the menu closes with the
           -- GBPalWhiteOutWithDelay3 blink, and the simulated pad press
-          -- steps the player forward onto land
+          -- steps the player forward onto land (or across a connection
+          -- strip when the shore is the next map's edge)
           self.game.stack:pop()
           ow.player.surfing = false
           require("src.core.Music").setSurfing(self.game.data, false)
           self.game.stack:push(Transition.whiteFlash(self.game, nil, function()
-            ow:scriptMove(ow.player, ow.player.facing, 1)
+            ow:stepForwardOrCrossEdge(ow.player.facing)
           end))
           return
         end
@@ -277,7 +296,9 @@ function PartyMenu:update(dt)
         if ow and heal then
           self.game.stack:push(Transition.whiteFlash(self.game, nil, function()
             require("src.core.Sound").play(self.game.data, "Teleport_Exit1")
-            ow:warpToHealPoint()
+            -- EnterMapAnim on arrival (HandleFlyWarpOrDungeonWarp sets
+            -- BIT_FLY_WARP); blackouts must not pass arrive="teleport"
+            ow:warpToHealPoint(nil, { arrive = "teleport" })
           end))
         end
         return
@@ -331,9 +352,17 @@ function PartyMenu:update(dt)
       local items = { { label = "STATS", action = "stats" },
                       { label = "SWITCH", action = "switch" } }
       local ow = self.game.overworld
-      if not self.battle and ow and mon.hp > 0 then
+      -- Field moves (HMs/TMs) are usable out of battle even when the mon
+      -- is fainted -- Gen 1 does not require HP for Cut/Fly/Surf/etc.
+      -- Battle still excludes this list via `not self.battle`. Softboiled
+      -- can appear for a fainted user; its heal transfer then no-ops.
+      if not self.battle and ow then
+        -- FLY/TELEPORT: CheckIfInOutsideMap (OVERWORLD + PLATEAU —
+        -- Route 23 / Indigo Plateau outdoor), not OVERWORLD alone (#83)
+        local outside = Map.isOutside(ow.map.def,
+          FieldDefaults.field(self.game.data, "outsideTilesets"))
         for _, mv in ipairs(mon.moves) do
-          if mv.id == "FLY" and ow.map.def.tileset == "OVERWORLD"
+          if mv.id == "FLY" and outside
              and self.game.save.inventory.THUNDERBADGE then
             table.insert(items, { label = "FLY", action = "fly" })
           elseif mv.id == "FLASH" and ow.dark
@@ -352,7 +381,7 @@ function PartyMenu:update(dt)
             table.insert(items, { label = "STRENGTH", action = "strength" })
           elseif mv.id == "SOFTBOILED" then
             table.insert(items, { label = "SOFTBOILED", action = "softboiled" })
-          elseif mv.id == "TELEPORT" and ow.map.def.tileset == "OVERWORLD" then
+          elseif mv.id == "TELEPORT" and outside then
             -- TELEPORT works only OUTDOORS (start_sub_menus.asm
             -- .teleport -> CheckIfInOutsideMap); dark maps don't
             -- block it

src/ui/PlayerPC.lua

@@ -1,6 +1,7 @@
 -- The player's item-storage PC (engine/menus/players_pc.asm):
 -- WITHDRAW ITEM / DEPOSIT ITEM / TOSS ITEM / LOG OFF over
--- game.save.pcItems ({ ITEM_ID = count }, created lazily).  Withdraw and
+-- game.save.pcItems ({ ITEM_ID = count }; New Game seeds { POTION = 1 },
+-- older saves may still be empty until first deposit).  Withdraw and
 -- deposit ask "How many?" via the quantity selector (key items always
 -- move one); toss discards after a YES/NO confirm.  Follows the
 -- BoxMenu/BagMenu list idioms.
@@ -99,7 +100,13 @@ end
 local function deposit(game)
   local pc = game.save.pcItems
   local inv = game.save.inventory
-  game.stack:push(ListMenu.new(game, "DEPOSIT ITEM", buildItems(game, inv), {
+  local Bag = require("src.inventory.Bag")
+  -- badges live in save.inventory alongside items but are not depositable
+  local depositable = {}
+  for id, count in pairs(inv) do
+    if not Bag.isBadge(id) then depositable[id] = count end
+  end
+  game.stack:push(ListMenu.new(game, "DEPOSIT ITEM", buildItems(game, depositable), {
     onChoose = function(item, list)
       askQuantity(game, list, inv[item.value] or 1, item.value, function(qty)
         if pcFull(game, pc, item.value) then

src/ui/ShopMenu.lua

@@ -84,13 +84,17 @@ local function buy(game, stock)
 end
 
 local function sell(game)
+  -- Sell list is ITEMLISTMENU with wPrintItemPrices cleared
+  -- (pokemart.asm .sellMenuLoop): name + quantity only.  Price shows
+  -- in the quantity chooser.  Stuffing "xN" into the label next to a
+  -- right-aligned ¥ price made long names overlap (issue #116).
   local items = {}
   for _, id in ipairs(Bag.order(game.save)) do
     local def = game.data.items[id]
     table.insert(items, {
       value = id,
-      label = (def and def.name or id) .. " x" .. game.save.inventory[id],
-      right = ("¥%d"):format(def and math.floor(def.price / 2) or 0),
+      label = def and def.name or id,
+      right = "x" .. game.save.inventory[id],
     })
   end
   local greet = txt(game, "_PokemartBuyingGreetingText", "Take your time.")
@@ -128,7 +132,7 @@ local function sell(game)
             Bag.remove(game.save, item.value, qty)
             local left = game.save.inventory[item.value]
             if left then
-              item.label = def.name .. " x" .. left
+              item.right = "x" .. left
             else
               list:removeCurrent()
             end

src/ui/StartMenu.lua

@@ -4,8 +4,10 @@
 -- item list runs through the ui.start_menu.items hook before the menu
 -- opens, so mods insert or remove rows without patching this file.
 
+local Font = require("src.render.Font")
 local Logger = require("src.core.Logger")
 local Menu = require("src.ui.Menu")
+local Renderer = require("src.render.Renderer")
 local Runtime = require("src.mods.Runtime")
 local Screens = require("src.ui.Screens")
 
@@ -116,16 +118,43 @@ function StartMenu.new(game)
   -- the start menu's mask is PAD_DOWN | PAD_UP | PAD_START | PAD_B | PAD_A
   -- (engine/menus/draw_start_menu.asm), so START closes it back to the
   -- overworld -- unlike most menus, whose masks omit PAD_START.
+  --
+  -- item count isn't fixed: POKéDEX/LINK/MODS come and go with save state,
+  -- and mods can append their own rows through the hook above, so the
+  -- double-spaced box (the original's style) can grow past the 18-tile
+  -- canvas. Cap it at however many rows actually fit and scroll the rest,
+  -- with Menu's moreArrow showing while there's more below.
+  local rowStep = 2
+  local maxVisible = math.floor((Renderer.HEIGHT / 8 - 2) / rowStep)
   local menu = Menu.new(game, items,
-    { tx = 9, ty = 0, tw = 11, th = #items * 2 + 2, startCloses = true })
+    { tx = 9, ty = 0, tw = 11, maxVisible = maxVisible, startCloses = true })
   -- the cursor position survives closing the menu
   -- (wBattleAndStartSavedMenuItem, home/start_menu.asm)
   menu.index = math.min(game.save.startMenuIndex or 1, #items)
+  menu:clampScroll()
   local baseUpdate = menu.update
   menu.update = function(self, dt)
     baseUpdate(self, dt)
     game.save.startMenuIndex = self.index
   end
+
+  -- inside the Safari Zone the start menu also shows remaining steps and
+  -- SAFARI BALLs (PrintSafariZoneSteps): a 9x5 border at the top-left with
+  -- "steps/500" and "BALL xx"
+  if game.save.safari then
+    local baseDraw = menu.draw
+    menu.draw = function(self)
+      baseDraw(self)
+      local safari = game.save.safari
+      Font.drawBox(0, 0, 9, 5)
+      love.graphics.setColor(0, 0, 0, 1)
+      Font.draw(("%3d"):format(math.floor(safari.steps or 0)), 8, 8)
+      Font.draw("/500", 32, 8)
+      Font.draw("BALL", 8, 24)
+      Font.draw(("%2d"):format(math.floor(safari.balls or 0)), 48, 24)
+      love.graphics.setColor(1, 1, 1, 1)
+    end
+  end
   return menu
 end
 

src/ui/SummaryMenu.lua

@@ -115,12 +115,16 @@ function SummaryMenu:draw()
     drawLineBox(19, 1, 6, 10)
     Font.draw("EXP POINTS", 72, 24)
     Font.draw(("%d"):format(mon.exp), 96, 32)
-    Font.draw("LEVEL UP", 72, 44)
+    -- StatusScreen2: "LEVEL UP" at (9,5); next-exp PrintNumber 7 cols
+    -- at (7,6); space at (14,6); PrintLevel at (16,6).  The old
+    -- "%d to L%d" string at x=88 overflowed the DrawLineBox edge.
+    Font.draw("LEVEL UP", 72, 40)
     local Growth = require("src.pokemon.Growth")
     local nextExp = mon.level < 100
       and (Growth.expForLevel(def.growthRate, mon.level + 1) - mon.exp) or 0
-    Font.draw(("%d to L%d"):format(math.max(0, nextExp),
-                                   math.min(100, mon.level + 1)), 88, 52)
+    Font.draw(("%7d"):format(math.max(0, nextExp)), 56, 48)
+    HudTiles.tile(0x6E, 128, 48) -- <LV>
+    Font.draw(tostring(math.min(100, mon.level + 1)), 136, 48)
     Font.drawBox(0, 8, 20, 10)
     for i = 1, 4 do
       local mv = mon.moves[i]

src/ui/TitleState.lua

@@ -5,6 +5,7 @@
 
 local Font = require("src.render.Font")
 local Music = require("src.core.Music")
+local GameVersion = require("src.core.GameVersion")
 
 local TitleState = {}
 TitleState.__index = TitleState
@@ -12,13 +13,35 @@ TitleState.isOpaque = true
 
 -- SGB title zones (PalPacket_Titlescreen): the logo rows get LOGO2,
 -- the version-ribbon band LOGO1, the rest MEWMON.
+--
+-- The CONTINUE / NEW GAME menu and the continue-info box sit inside those
+-- LOGO bands.  pokered's MainMenu clears the title and runs
+-- RunDefaultPaletteCommand so black UI ink stays black; this port keeps the
+-- title art visible underneath, so without an overlay those boxes inherit
+-- LOGO2 blue / LOGO1 red (issue #133).  A trailing trueColor zone leaves the
+-- overlay's DMG black unshaded while the logo and title mon keep title pals.
+--
+-- ROM SuperPal whites are often {255,239,255}.  Under RED++, LOGO2/MEWMON
+-- come from the GBC pack (pure white) while Blue's LOGO1 stays on the ROM
+-- pack (#128), so the version-ribbon row reads as a pink band.  Force that
+-- slot to pure white; ink colors (Blue/Red "Version" text) stay intact.
+local function withPureWhite(pal)
+  if not pal then return nil end
+  return { { 255, 255, 255 }, pal[2], pal[3], pal[4] }
+end
+
 function TitleState:sgbPalettes(game)
   local P = require("src.render.PaletteFX")
   local z = {
     P.zone(P.pal(game.data, "LOGO2"), 0, 0, 19, 7),
-    P.zone(P.pal(game.data, "LOGO1"), 0, 8, 19, 9),
+    P.zone(withPureWhite(P.pal(game.data, "LOGO1")), 0, 8, 19, 9),
     P.zone(P.pal(game.data, "MEWMON"), 0, 10, 19, 17),
   }
+  local top = game.stack and game.stack:top()
+  local box = top and top.titleUiBox
+  if box then
+    z[#z + 1] = P.trueColorZone(box[1], box[2], box[3], box[4])
+  end
   return z[3] and z or nil
 end
 
@@ -30,6 +53,13 @@ local CYCLE_SPECIES = {
   "PIKACHU", "CLEFAIRY", "RHYDON", "ABRA", "GASTLY", "DITTO",
   "PIDGEOTTO", "ONIX", "PONYTA", "MAGIKARP",
 }
+-- Blue's TitleMons (data/pokemon/title_mons.asm, _BLUE branch): STARTER2 is
+-- Squirtle, STARTER1 Charmander, STARTER3 Bulbasaur.
+local BLUE_CYCLE_SPECIES = {
+  "SQUIRTLE", "CHARMANDER", "BULBASAUR", "MANKEY", "HITMONLEE",
+  "VULPIX", "CHANSEY", "AERODACTYL", "JOLTEON", "SNORLAX",
+  "GLOOM", "POLIWAG", "DODUO", "PORYGON", "GENGAR", "RAICHU",
+}
 local CYCLE_FRAMES = 240 -- the original waits ~4s between picks
 
 local function tryImage(path)
@@ -61,9 +91,13 @@ function TitleState.new(game, opts)
   self.version = tryImage(imagePath(title.versionRibbon or title.version)
                           or "assets/generated/title/red_version.png")
   self.player = tryImage("assets/generated/title/player.png")
+  self.blue = GameVersion.isBlue()
+  -- Blue cycles its own title mons and prints its ribbon contiguously; a
+  -- field.title.cycleSpecies override (mods / total conversions) still wins.
+  local defaultCycle = self.blue and BLUE_CYCLE_SPECIES or CYCLE_SPECIES
   self.cycleSpecies = (type(title.cycleSpecies) == "table"
                        and #title.cycleSpecies > 0)
-                      and title.cycleSpecies or CYCLE_SPECIES
+                      and title.cycleSpecies or defaultCycle
   self.sprites = {} -- species -> image or false (load failed)
   self.cycleIndex = 1
   self.timer = 0
@@ -92,8 +126,10 @@ end
 
 local function hasSave()
   local ok, info = pcall(function()
+    -- the active game's save file (save.lua for Red, save_blue.lua for Blue)
+    local name = require("src.core.SaveData").saveFilename(GameVersion.get())
     return love.filesystem and love.filesystem.getInfo
-       and love.filesystem.getInfo("save.lua") or nil
+       and love.filesystem.getInfo(name) or nil
   end)
   return ok and info ~= nil
 end
@@ -105,8 +141,11 @@ local ContinueInfo = {}
 ContinueInfo.__index = ContinueInfo
 
 function ContinueInfo.new(title, save)
-  return setmetatable({ title = title, game = title.game, save = save },
-                      ContinueInfo)
+  -- box at (4,7), 16x10 tiles -- see ContinueInfo:draw / DisplayContinueGameInfo
+  return setmetatable({
+    title = title, game = title.game, save = save,
+    titleUiBox = { 4, 7, 19, 16 },
+  }, ContinueInfo)
 end
 
 function ContinueInfo:update(dt)
@@ -170,8 +209,11 @@ function TitleState:openMenu()
       love.event.quit()
     end
   end })
-  game.stack:push(Menu.new(game, items,
-                           { tx = 0, ty = 0, tw = 13, th = #items * 2 + 2 }))
+  local th = #items * 2 + 2
+  local menu = Menu.new(game, items, { tx = 0, ty = 0, tw = 13, th = th })
+  -- full-width title LOGO zones would recolor this box; see sgbPalettes
+  menu.titleUiBox = { 0, 0, 12, th - 1 }
+  game.stack:push(menu)
 end
 
 function TitleState:update(dt)
@@ -211,17 +253,26 @@ function TitleState:draw()
     love.graphics.draw(self.logo, 16, 8)
   else
     love.graphics.setColor(0, 0, 0, 1)
-    Font.draw("POKéMON RED", (160 - 11 * 8) / 2, 24)
+    Font.draw(self.blue and "POKéMON BLUE" or "POKéMON RED",
+      (160 - 12 * 8) / 2, 24)
     love.graphics.setColor(1, 1, 1, 1)
   end
   if self.version then
-    -- the strip holds Red+Green+Version glyphs; the tilemap prints
-    -- tiles $60,$61 ("Red"), a space, then $65-$69 ("Version")
     local iw, ih = self.version:getDimensions()
-    love.graphics.draw(self.version,
-      love.graphics.newQuad(0, 0, 16, 8, iw, ih), 56, 64)
-    love.graphics.draw(self.version,
-      love.graphics.newQuad(40, 0, 40, 8, iw, ih), 80, 64)
+    if self.blue then
+      -- Blue prints its ribbon contiguously ("Blue Version", hlcoord 7,8).
+      -- The extracted strip packs those eight glyph tiles into image tiles
+      -- 0..7 (tiles 8..9 are blank), so draw that 64px run at px (56, 64).
+      love.graphics.draw(self.version,
+        love.graphics.newQuad(0, 0, 64, 8, iw, ih), 56, 64)
+    else
+      -- Red's strip holds Red+Green+Version glyphs; the tilemap prints
+      -- tiles $60,$61 ("Red"), a space, then $65-$69 ("Version").
+      love.graphics.draw(self.version,
+        love.graphics.newQuad(0, 0, 16, 8, iw, ih), 56, 64)
+      love.graphics.draw(self.version,
+        love.graphics.newQuad(40, 0, 40, 8, iw, ih), 80, 64)
+    end
   end
   local sprite = self:currentSprite()
   if sprite then

src/world/FieldDefaults.lua

@@ -120,8 +120,11 @@ FieldDefaults.FIELD = {
                   doorBlock = { bx = 2, by = 2, block = 5 } },
   },
   -- IsSurfingAllowed refuses SURF on the B4F stairs square until both
-  -- plug boulders are down (engine/overworld/field_move_messages.asm)
+  -- plug boulders are down (engine/overworld/field_move_messages.asm).
+  -- B3F currents set BIT_FORCED_WARP so the south-edge water warps fire
+  -- without a held d-pad (scripts/SeafoamIslandsB3F.asm).
   seafoam = {
+    SEAFOAM_ISLANDS_B3F = { setsForcedWarp = true },
     SEAFOAM_ISLANDS_B4F = {
       surfBlocked = { { x = 7, y = 11, untilEvents = {
         "EVENT_SEAFOAM4_BOULDER1_DOWN_HOLE",

src/world/Map.lua

@@ -24,11 +24,65 @@ local NO_SHORE_TILESETS = { SHIP_PORT = true }
 -- what counts as "outside" for the wLastMap memory (CheckIfInOutsideMap)
 local OUTSIDE_TILESETS = { "OVERWORLD", "PLATEAU" }
 
+-- warp pads and fall-through holes (data/tilesets/warp_pad_hole_tile_ids
+-- .asm WarpPadAndHoleData); a tileset record carrying warpPadTiles
+-- ({ [tileId] = "pad"|"hole" }) wins over these vanilla rows
+local WARP_PAD_TILES = {
+  FACILITY = { [0x20] = "pad", [0x11] = "hole" },
+  CAVERN = { [0x22] = "hole" },
+  INTERIOR = { [0x55] = "pad" },
+}
+
 local function hashSet(list, into)
   for _, t in ipairs(list) do into[t] = true end
   return into
 end
 
+-- Collision tile (bottom-left 8x8) of a cell on an UNLOADED map def --
+-- the connected neighbor during an edge crossing.  pokered's
+-- GetTileAndCoordsInFrontOfPlayer / collision checks read the neighbor
+-- strip's tile bytes the same way.
+function Map.defCellTile(def, tilesetDef, cx, cy)
+  if not (def and tilesetDef and tilesetDef.blocks) then return nil end
+  local tx, ty = cx * 2, cy * 2 + 1
+  local bx, by = math.floor(tx / 4), math.floor(ty / 4)
+  local id
+  if bx < 0 or by < 0 or bx >= def.width or by >= def.height then
+    id = def.borderBlock
+  else
+    id = def.blocks[by * def.width + bx + 1]
+  end
+  local block = tilesetDef.blocks[(id or 0) + 1]
+  if not block then return nil end
+  return block[(ty % 4) * 4 + (tx % 4) + 1]
+end
+
+local function defWaterTileSet(def, tilesetDef)
+  local water = {}
+  hashSet(tilesetDef.waterTiles or WATER_TILES, water)
+  local shore = tilesetDef.shoreTiles
+  if shore == nil and not NO_SHORE_TILESETS[def.tileset] then shore = SHORE_TILES end
+  hashSet(shore or {}, water)
+  return water
+end
+
+-- Water/shore on an unloaded map def (same tile ids as Map:isWaterCell).
+function Map.defIsWaterCell(def, tilesetDef, cx, cy)
+  local tile = Map.defCellTile(def, tilesetDef, cx, cy)
+  if tile == nil then return false end
+  return defWaterTileSet(def, tilesetDef)[tile] or false
+end
+
+function Map.defIsWalkableCell(def, tilesetDef, cx, cy)
+  if not (tilesetDef and tilesetDef.walkable) then return false end
+  local tile = Map.defCellTile(def, tilesetDef, cx, cy)
+  if tile == nil then return false end
+  for _, t in ipairs(tilesetDef.walkable) do
+    if t == tile then return true end
+  end
+  return false
+end
+
 -- Passability of a cell of an UNLOADED map def -- the connected neighbor
 -- during an edge crossing.  pokered's collision check reads the neighbor
 -- strip's tile bytes, so a step off the map edge onto a solid tile of
@@ -43,32 +97,8 @@ function Map.defPassable(def, tilesetDef, cx, cy, surfing)
   if not (def and tilesetDef and tilesetDef.blocks and tilesetDef.walkable) then
     return false
   end
-  local tx, ty = cx * 2, cy * 2 + 1
-  local bx, by = math.floor(tx / 4), math.floor(ty / 4)
-  local id
-  if bx < 0 or by < 0 or bx >= def.width or by >= def.height then
-    id = def.borderBlock
-  else
-    id = def.blocks[by * def.width + bx + 1]
-  end
-  local block = tilesetDef.blocks[(id or 0) + 1]
-  if not block then return false end
-  local tile = block[(ty % 4) * 4 + (tx % 4) + 1]
-  for _, t in ipairs(tilesetDef.walkable) do
-    if t == tile then return true end
-  end
-  if surfing then
-    for _, t in ipairs(tilesetDef.waterTiles or WATER_TILES) do
-      if t == tile then return true end
-    end
-    local shore = tilesetDef.shoreTiles
-    if shore == nil and not NO_SHORE_TILESETS[def.tileset] then
-      shore = SHORE_TILES
-    end
-    for _, t in ipairs(shore or {}) do
-      if t == tile then return true end
-    end
-  end
+  if Map.defIsWalkableCell(def, tilesetDef, cx, cy) then return true end
+  if surfing and Map.defIsWaterCell(def, tilesetDef, cx, cy) then return true end
   return false
 end
 
@@ -199,6 +229,14 @@ function Map:isWarpTileCell(cx, cy)
   return self.doorTiles[t] or self.warpTiles[t] or false
 end
 
+-- "pad"/"hole" when the cell's collision tile is a teleporter warp pad or
+-- a fall-through hole (IsPlayerStandingOnWarpPadOrHole), nil otherwise
+function Map:warpPadOrHoleAt(cx, cy)
+  local table_ = self.tileset.warpPadTiles or WARP_PAD_TILES[self.def.tileset]
+  if not table_ then return nil end
+  return table_[self:cellTile(cx, cy)]
+end
+
 -- counter tiles allow talking to NPCs across them (mart clerks, nurses)
 function Map:isCounterCell(cx, cy)
   local t = self:cellTile(cx, cy)