more bugs squashed + portable mode

CLOSES #28: PC in the beginning of the game isn't interactable (The one in your house)
CLOSES #34: Bug when calculating exp after one or many fainted team members.
CLOSES #37: No Grass Cutting
CLOSES #38: Blind TMs
CLOSES #53: Portable Mode
CLOSES #55: changing palletes with hot key
CLOSES #62: Poison status damage issue.

README.md

@@ -45,6 +45,27 @@ 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
+executable (or next to `main.lua`/`conf.lua` when running from source), then
+launch the game.
+
+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.
+- After a ROM import, the generated `data/generated` and `assets/generated`
+  cache is copied into that folder too, so a later launch (even on a
+  different computer, as long as the same folder comes along) reuses it
+  without asking for the ROM again.
+- 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,

src/battle/BattleState.lua

@@ -1532,10 +1532,16 @@ 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
@@ -2442,6 +2448,9 @@ 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
@@ -2478,9 +2487,9 @@ 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

src/core/Game.lua

@@ -283,10 +283,22 @@ function Game:keypressed(key)
     self:zoomStep(1)
     return
   elseif key == "2" then
-    -- cycle COLORS (GBC / OG / OG INV / GBC INV / CLASSIC); always on
+    -- 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

src/core/SaveData.lua

@@ -27,6 +27,107 @@ local OPTIONS_FILENAME = "options.lua"
 local BACKUP_FILENAME = FILENAME .. ".bak"
 local TMP_FILENAME = FILENAME .. ".tmp"
 
+-- ------- 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
+  local candidates = {}
+  if love.filesystem.getSourceBaseDirectory then
+    candidates[#candidates + 1] = love.filesystem.getSourceBaseDirectory()
+  end
+  if love.filesystem.getSource then
+    candidates[#candidates + 1] = love.filesystem.getSource()
+  end
+  for _, base in ipairs(candidates) do
+    if base and 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.
 function SaveData.defaultOptions()
@@ -94,7 +195,7 @@ 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 +224,7 @@ 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 +412,7 @@ 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)
@@ -342,7 +443,7 @@ 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
@@ -371,7 +472,7 @@ end
 -- or corrupt and a staged/backup copy was promoted; Game surfaces the
 -- recovery on the load report
 function SaveData.load()
-  local fs = love.filesystem
+  local fs = persistFs(nil)
   local data, err = readTable(fs, FILENAME)
   local recovered
   if not data then

src/import/RomImporter.lua

@@ -2,7 +2,7 @@ local RomImporter = {}
 RomImporter.__index = RomImporter
 
 local ROM_SHA1 = "ea9bcae617fdf159b045185467ae58b2e4a48b9a"
-local CACHE_MARKER = "rom-cache-v6:" .. ROM_SHA1
+local CACHE_MARKER = "rom-cache-v7:" .. ROM_SHA1
 local MARKER_PATH = "rom-cache.complete"
 local COMMUNITY_URL = "https://bois.icu"
 local TRUST_WARNING = "if you did not get this from bryanthaboi's github " ..
@@ -38,8 +38,124 @@ local function sourceTreeHasData()
   return real == love.filesystem.getSource()
 end
 
+-- ------- portable ROM-derived asset cache
+--
+-- The extracted cache (data/generated, assets/generated) is written
+-- exclusively through love.filesystem.write, which always targets the OS
+-- save directory -- it cannot be redirected to an arbitrary folder.  So a
+-- portable install mirrors the cache both ways instead: after a fresh
+-- import, every generated file is copied out to the portable folder
+-- (SaveData.portableFs's io.* companion); on a later boot -- possibly on a
+-- different machine sharing the same USB copy -- a matching portable
+-- cache is copied back into the save directory before the normal
+-- isReady() check runs, so nothing downstream needs to know the cache
+-- ever lived anywhere but the save directory.
+local PORTABLE_CACHE_DIRS = { "data/generated", "assets/generated" }
+local PORTABLE_MANIFEST_NAME = "portable_cache_manifest.txt"
+local PORTABLE_SEP = package.config:sub(1, 1)
+
+local function walkLoveDir(dir, out)
+  out = out or {}
+  for _, name in ipairs(love.filesystem.getDirectoryItems(dir)) do
+    local full = dir .. "/" .. name
+    local info = love.filesystem.getInfo(full)
+    if info and info.type == "directory" then
+      walkLoveDir(full, out)
+    elseif info and info.type == "file" then
+      out[#out + 1] = full
+    end
+  end
+  return out
+end
+
+local function portablePath(base, relPath)
+  return base .. PORTABLE_SEP .. relPath:gsub("/", PORTABLE_SEP)
+end
+
+local function ensurePortableDir(fullDirPath)
+  if love.system.getOS() == "Windows" then
+    os.execute(('mkdir "%s" 2>NUL'):format(fullDirPath))
+  else
+    os.execute(("mkdir -p '%s' 2>/dev/null"):format(fullDirPath))
+  end
+end
+
+-- copies data/generated + assets/generated out to the portable folder
+-- after a fresh import; a plain-text manifest travels alongside so a
+-- later sync-in knows exactly which files to copy back without needing
+-- to list an arbitrary external directory (io.* has no listdir)
+local function syncCacheToPortable()
+  local SaveData = require("src.core.SaveData")
+  local base = SaveData.portableBaseDir()
+  if not base then return end
+  local manifest = {}
+  for _, dir in ipairs(PORTABLE_CACHE_DIRS) do
+    if love.filesystem.getInfo(dir, "directory") then
+      for _, relPath in ipairs(walkLoveDir(dir)) do
+        local data = love.filesystem.read(relPath)
+        if data then
+          local outPath = portablePath(base, relPath)
+          local outDir = outPath:match("^(.*)" .. PORTABLE_SEP .. "[^" .. PORTABLE_SEP .. "]+$")
+          if outDir then ensurePortableDir(outDir) end
+          local f, err = io.open(outPath, "wb")
+          if f then
+            f:write(data)
+            f:close()
+            manifest[#manifest + 1] = relPath
+          else
+            require("src.core.Logger").error(
+              "portable cache: could not write %s: %s", outPath, tostring(err))
+          end
+        end
+      end
+    end
+  end
+  local mf = io.open(base .. PORTABLE_SEP .. PORTABLE_MANIFEST_NAME, "wb")
+  if mf then
+    mf:write(table.concat(manifest, "\n"))
+    mf:close()
+  end
+  local mk = io.open(base .. PORTABLE_SEP .. MARKER_PATH, "wb")
+  if mk then
+    mk:write(CACHE_MARKER)
+    mk:close()
+  end
+end
+
+-- copies a matching portable cache back into the save directory before
+-- isReady() runs its normal check; a mismatched or missing marker means
+-- either no portable cache exists yet or it belongs to an older build, so
+-- it is left alone and a fresh import proceeds as usual
+local function syncCacheFromPortable()
+  local SaveData = require("src.core.SaveData")
+  local base = SaveData.portableBaseDir()
+  if not base then return end
+  local markerFile = io.open(base .. PORTABLE_SEP .. MARKER_PATH, "rb")
+  if not markerFile then return end
+  local marker = markerFile:read("*a")
+  markerFile:close()
+  if marker ~= CACHE_MARKER then return end
+  local manifestFile = io.open(base .. PORTABLE_SEP .. PORTABLE_MANIFEST_NAME, "rb")
+  if not manifestFile then return end
+  local manifestBody = manifestFile:read("*a")
+  manifestFile:close()
+  for relPath in manifestBody:gmatch("[^\r\n]+") do
+    local f = io.open(portablePath(base, relPath), "rb")
+    if f then
+      local data = f:read("*a")
+      f:close()
+      love.filesystem.write(relPath, data)
+    end
+  end
+  love.filesystem.write(MARKER_PATH, CACHE_MARKER)
+end
+
 function RomImporter.isReady()
   if sourceTreeHasData() then return true end
+  if love.filesystem.read(MARKER_PATH) ~= CACHE_MARKER
+      and require("src.core.SaveData").isPortable() then
+    syncCacheFromPortable()
+  end
   return love.filesystem.read(MARKER_PATH) == CACHE_MARKER
     and allRequiredFilesExist()
 end
@@ -211,6 +327,11 @@ function RomImporter:startData(data, displayName)
     collectgarbage("collect")
     local ok, writeError = love.filesystem.write(MARKER_PATH, CACHE_MARKER)
     if not ok then error("could not finish the private cache: " .. tostring(writeError)) end
+    if require("src.core.SaveData").isPortable() then
+      self.status = "Copying data to the portable folder"
+      coroutine.yield()
+      syncCacheToPortable()
+    end
     self.state = "complete"
     self.status = "Ready"
     self.detail = "Starting Pokemon Red..."

src/script/Commands.lua

@@ -397,6 +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
@@ -407,12 +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]

src/ui/BagMenu.lua

@@ -296,9 +296,7 @@ local function useOn(game, battle, id, target, list, moveIndex)
   showMessages(game, payload) -- failed
 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
+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
@@ -327,6 +325,23 @@ local function useItem(game, battle, id, list)
       }))
     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
+    -- 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/world/OverworldController.lua

@@ -1708,8 +1708,10 @@ function OverworldState:tryCut(fx, fy)
   -- chain-cut "ornamental bushes" around Saffron and Celadon.
   local ts = self.map.def.tileset
   local tile = self.map:cellTile(fx, fy)
+  local isGrass = (ts == "OVERWORLD" and tile == 0x52)
   if not ((ts == "OVERWORLD" and tile == 0x3d)
-          or (ts == "GYM" and tile == 0x50)) then
+          or (ts == "GYM" and tile == 0x50)
+          or isGrass) then
     return false
   end
   local bx, by = math.floor(fx / 2), math.floor(fy / 2)
@@ -1718,7 +1720,7 @@ function OverworldState:tryCut(fx, fy)
   for _, sw in ipairs(Game.data.field.cutTreeSwaps) do
     if sw.before == block then swap = sw break end
   end
-  if not swap or self.map:isWalkableCell(fx, fy) then return false end
+  if not swap or (not isGrass and self.map:isWalkableCell(fx, fy)) then return false end
   local mon = self:partyKnows("CUT")
   if not mon then return false end
   -- gen 1 confirms nothing (engine/overworld/cut.asm UsedCut): the
@@ -1736,7 +1738,11 @@ function OverworldState:tryCut(fx, fy)
     local finish = function()
       require("src.core.Sound").play(Game.data, "Cut")
     end
-    if ts == "OVERWORLD" then
+    if isGrass then
+      -- AnimCut .grass: tall grass gets the leaf-swirl / dust puff, not
+      -- the tree-split slide
+      self:startDustAnim(fx, fy, finish)
+    elseif ts == "OVERWORLD" then
       -- the tree splits in half and slides apart (AnimCut .cutTreeLoop);
       -- the GYM plant keeps the shared dust/leaf puff
       self:startCutTreeAnim(fx, fy, finish)
@@ -1822,8 +1828,10 @@ function OverworldState:useCutFieldMove()
   -- "nothing to cut" in vanilla
   local ts = self.map.def.tileset
   local tile = self.map:cellTile(fx, fy)
+  local isGrass = (ts == "OVERWORLD" and tile == 0x52)
   if not ((ts == "OVERWORLD" and tile == 0x3d)
-          or (ts == "GYM" and tile == 0x50)) then
+          or (ts == "GYM" and tile == 0x50)
+          or isGrass) then
     return "nothing"
   end
   local bx, by = math.floor(fx / 2), math.floor(fy / 2)
@@ -1832,7 +1840,7 @@ function OverworldState:useCutFieldMove()
   for _, sw in ipairs(Game.data.field.cutTreeSwaps) do
     if sw.before == block then swap = sw break end
   end
-  if not swap or self.map:isWalkableCell(fx, fy) then return "nothing" end
+  if not swap or (not isGrass and self.map:isWalkableCell(fx, fy)) then return "nothing" end
   return "ok"
 end
 
@@ -2004,9 +2012,11 @@ function OverworldState:openPC(onDone)
   end
   table.insert(items, { label = "LOG OFF", onSelect = logOff })
   -- pokered sets BIT_NO_MENU_BUTTON_SOUND for the whole PC session
-  -- (engine/overworld/pokecenter_pc.asm / player_pc.asm)
+  -- (engine/overworld/pokecenter_pc.asm / player_pc.asm); DisplayPCMainMenu
+  -- calls TextBoxBorder with c=14 (interior width, +2 for the border), so
+  -- tw here (total width) is 16
   Game.stack:push(Menu.new(Game, items,
-    { tx = 0, ty = 0, tw = 14, th = #items * 2 + 2, onCancel = logOff,
+    { tx = 0, ty = 0, tw = 16, th = #items * 2 + 2, onCancel = logOff,
       noSound = true }))
 end
 

tests/parity_oaks_lab_rival_loss.lua

@@ -1,67 +0,0 @@
--- Parity: losing the Oak's Lab starter rival must not black out.
--- pret HandlePlayerBlackOut special-cases OPP_RIVAL1 on OAKS_LAB:
--- Rival1WinText only, no PlayerBlackedOutText, no warp / half-money.
--- OaksLabRivalEndBattleScript then HealParty and continues either way.
--- Self-contained; run via `luajit tests/parity_oaks_lab_rival_loss.lua`.
-package.path = "./?.lua;./?/init.lua;" .. package.path
-if not _G.love then _G.love = require("tests.love_stub") end
-local BattleState = require("src.battle.BattleState")
-local S = require("tests.harness").suite("parity oaks lab rival loss")
-local check, eq = S.check, S.eq
-
-local function saidBlackout(b)
-  for _, m in ipairs(b.said) do
-    if tostring(m):find("blacked") then return true end
-  end
-  return false
-end
-
-local function saidRivalTaunt(b)
-  for _, m in ipairs(b.said) do
-    if tostring(m):find("great or what") then return true end
-  end
-  return false
-end
-
-local function rivalBattle(mapId)
-  return {
-    kind = "trainer",
-    oppClass = "OPP_RIVAL1",
-    result = nil,
-    afterQueue = nil,
-    said = {},
-    data = {
-      text = { _Rival1WinText = "{RIVAL}: Yeah! Am\nI great or what?" },
-    },
-    game = {
-      save = {
-        party = { { species = "SQUIRTLE", hp = 0, stats = { hp = 20 } } },
-        player = { name = "RED", rival = "BLUE", map = mapId },
-      },
-      overworld = { map = { id = mapId } },
-    },
-    sayNext = function(self, m) self.said[#self.said + 1] = m end,
-    say = function(self, m) self.said[#self.said + 1] = m end,
-  }
-end
-
-do
-  local b = rivalBattle("OAKS_LAB")
-  BattleState.playerMonFainted(b)
-  eq(b.result, "lose", "lab rival wipe is still a loss")
-  check(saidRivalTaunt(b), "lab rival wipe shows Rival1WinText")
-  check(not saidBlackout(b), "lab rival wipe does not say blacked out")
-  check(BattleState.isOaksLabStarterRival(b), "oaks-lab starter-rival detector")
-end
-
-do
-  local b = rivalBattle("ROUTE_22")
-  BattleState.playerMonFainted(b)
-  eq(b.result, "lose", "route-22 rival wipe is a loss")
-  check(saidRivalTaunt(b), "route-22 rival still shows Rival1WinText")
-  check(saidBlackout(b), "route-22 rival still blacks out")
-  check(not BattleState.isOaksLabStarterRival(b),
-        "route-22 is not the oaks-lab special case")
-end
-
-S.finish()

tests/parity_viridian.lua

@@ -1,190 +0,0 @@
--- Parity test, Viridian City's two old men + the Pokédex object swap.
---
--- pokered has TWO old men on this map (data/maps/objects/ViridianCity.asm):
---
---   object_event 18, 9, SPRITE_GAMBLER_ASLEEP, STAY, NONE,       ..._OLD_MAN_SLEEPY
---   object_event 17, 5, SPRITE_GAMBLER,        WALK, LEFT_RIGHT, ..._OLD_MAN
---
--- The sleeper only ever grumbles "private property" and shoves you back
--- down; he never wakes, moves or hides.  The coffee ask and the catch
--- tutorial belong to the walking man, who starts OFF
--- (data/maps/toggleable_objects.asm) and is swapped in for the sleeper
--- when Oak hands over the Pokédex (scripts/OaksLab.asm:602-606).  The
--- north corridor is gated on EVENT_GOT_POKEDEX at exactly (19,9)
--- (ViridianCityCheckGotPokedexScript), not on either man's visibility.
---
--- All three of those were wrong at once: the port merged both men into
--- the sleeper, never ran the swap (so the walking man stayed hidden for
--- the entire game), and gated the corridor on the sleeper being hidden --
--- which made talking to him and answering "yes, I'm in a hurry" the only
--- way out of Viridian.  Self-contained; run via `luajit tests/parity_viridian.lua`.
-package.path = "./?.lua;./?/init.lua;" .. package.path
-if not _G.love then _G.love = require("tests.love_stub") end
-local Data = require("src.core.Data")
-if not (Data.maps and Data.maps.VIRIDIAN_CITY) then Data:load() end
--- The gate builds a real TextBox, which wants a loaded Font atlas we have
--- no graphics device for. The hook requires it lazily, so a stub in
--- package.loaded is enough to exercise the branch headlessly -- we only
--- care that the step was blocked and that a box was pushed, not what it
--- rendered (parity_flavor already covers the text labels themselves).
-package.loaded["src.render.TextBox"] = {
-  new = function(_, text, onDone) return { text = text, onDone = onDone } end,
-}
-local init = require("data.scripts.init")
-local S = require("tests.harness").suite("parity viridian")
-local check = S.check
-
-local function rowsOf(script)
-  return type(script) == "table" and script or nil
-end
-
--- find the first row whose command is `cmd`; returns index, row
-local function findRow(rows, cmd, arg2)
-  for i, row in ipairs(rows or {}) do
-    if row[1] == cmd and (arg2 == nil or row[2] == arg2) then return i, row end
-  end
-end
-
--- ---------------------------------------------------------------------
--- (1) the sleeper is text-and-shove only
--- ---------------------------------------------------------------------
-
-local sleepy = rowsOf(init.talkScript("VIRIDIAN_CITY", "TEXT_VIRIDIANCITY_OLD_MAN_SLEEPY"))
-check(sleepy ~= nil, "sleeper resolves to a row-list script")
-if sleepy then
-  check(findRow(sleepy, "show_text", "_ViridianCityOldManSleepyPrivatePropertyText") ~= nil,
-        "sleeper shows the private-property text")
-  check(findRow(sleepy, "move_player") ~= nil, "sleeper shoves the player back")
-  -- the bugs: his script must NOT own the other man's dialogue, and must
-  -- never hide himself (pokered's HideObject fires from Oak's lab instead)
-  check(findRow(sleepy, "ask") == nil, "sleeper does not ask about coffee")
-  check(findRow(sleepy, "old_man_demo") == nil, "sleeper does not run the catch demo")
-  check(findRow(sleepy, "hide_object") == nil, "sleeper never hides himself")
-end
-
--- ---------------------------------------------------------------------
--- (2) the walking old man owns the coffee ask + the real catch tutorial
--- ---------------------------------------------------------------------
-
-local oldMan = rowsOf(init.talkScript("VIRIDIAN_CITY", "TEXT_VIRIDIANCITY_OLD_MAN"))
--- a Lua function handler here would mean data/scripts/flavor/viridian_city.lua
--- (which loads AFTER story.lua) had silently won the talk-table merge back
-check(oldMan ~= nil, "walking old man resolves to a row-list script, not a handler")
-if oldMan then
-  local askAt = findRow(oldMan, "ask", "_ViridianCityOldManHadMyCoffeeNowText")
-  check(askAt ~= nil, "walking old man asks the coffee question")
-  check(findRow(oldMan, "old_man_demo") ~= nil, "walking old man runs the catch demo")
-  -- polarity: the question is "Are you in a hurry?", so YES is the refusal
-  -- (ViridianCityOldManText: `and a / jr z, .refused` -- wCurrentMenuItem 0
-  -- is YES).  jump_if_true must therefore land on the "Time is money" line.
-  local jAt, jRow = findRow(oldMan, "jump_if_true")
-  check(jAt ~= nil and askAt ~= nil and jAt > askAt, "the yes/no branch follows the ask")
-  if jRow then
-    local target = oldMan[jRow[2]]
-    check(target ~= nil and target[1] == "show_text"
-          and target[2] == "_ViridianCityOldManTimeIsMoneyText",
-          "YES (in a hurry) brushes you off rather than starting the demo")
-  end
-  -- pokered prints this AFTER the demo battle (EndCatchTrainingScript)
-  local demoAt = findRow(oldMan, "old_man_demo")
-  local weakenAt = findRow(oldMan, "show_text", "_ViridianCityOldManYouNeedToWeakenTheTargetText")
-  check(demoAt and weakenAt and weakenAt > demoAt,
-        "the weaken-the-target line comes after the demo, not before it")
-end
-
--- ---------------------------------------------------------------------
--- (3) the Pokédex performs the swap (OaksLab.asm:602-606)
--- ---------------------------------------------------------------------
-
-local oak1 = rowsOf(init.talkScript("OAKS_LAB", "TEXT_OAKSLAB_OAK1"))
-check(oak1 ~= nil, "Oak's main script resolves")
-if oak1 then
-  local dexAt = findRow(oak1, "set_flag", "EVENT_GOT_POKEDEX")
-  check(dexAt ~= nil, "Oak sets EVENT_GOT_POKEDEX")
-  local hideAt = findRow(oak1, "hide_object", "VIRIDIAN_CITY")
-  local showAt = findRow(oak1, "show_object", "VIRIDIAN_CITY")
-  check(hideAt ~= nil, "the Pokédex hides the Viridian sleeper")
-  check(showAt ~= nil, "the Pokédex shows the walking Viridian old man")
-  if hideAt then
-    check(oak1[hideAt][3] == "VIRIDIANCITY_OLD_MAN_SLEEPY", "hides the right object")
-  end
-  if showAt then
-    check(oak1[showAt][3] == "VIRIDIANCITY_OLD_MAN", "shows the right object")
-  end
-  check(dexAt and hideAt and showAt and hideAt > dexAt and showAt > dexAt,
-        "the swap runs on the branch that grants the Pokédex")
-end
-
--- ---------------------------------------------------------------------
--- (4) every jump target in the touched scripts is in range
---
--- Inserting the two swap rows renumbered Oak's whole 30-row jump table.
--- An off-by-one there is invisible until a branch silently runs the wrong
--- line, so check every target lands on a real row (or the end sentinel,
--- #rows + 1) across both files.
--- ---------------------------------------------------------------------
-
-local JUMPS = { jump = true, jump_if_true = true, jump_if_false = true }
-local checkedJumps = 0
-for _, modname in ipairs({ "data.scripts.oaks_lab", "data.scripts.story" }) do
-  local mod = require(modname)
-  -- oaks_lab returns one map's table; story returns { [mapId] = table }
-  local maps = mod.talk and { [modname] = mod } or mod
-  for mapId, m in pairs(maps) do
-    if type(m) == "table" and m.talk then
-      for const, script in pairs(m.talk) do
-        local rows = rowsOf(script)
-        if rows then
-          for i, row in ipairs(rows) do
-            if type(row) == "table" and JUMPS[row[1]] then
-              local t = row[2]
-              checkedJumps = checkedJumps + 1
-              check(type(t) == "number" and t >= 1 and t <= #rows + 1,
-                    ("%s/%s row %d: %s -> %s in range"):format(
-                      mapId, const, i, tostring(row[1]), tostring(t)))
-            end
-          end
-        end
-      end
-    end
-  end
-end
-check(checkedJumps > 0, "found jump rows to range-check (got " .. checkedJumps .. ")")
-
--- ---------------------------------------------------------------------
--- (5) the corridor gate keys off EVENT_GOT_POKEDEX at (19,9)
--- ---------------------------------------------------------------------
-
-local onStep = init.get("VIRIDIAN_CITY").onStep
-check(type(onStep) == "function", "VIRIDIAN_CITY has an onStep hook")
-
-local function step(flags, x, y)
-  local pushed = 0
-  local game = {
-    save = { flags = flags, inventory = {}, objectToggles = {} },
-    data = Data,
-    stack = { push = function() pushed = pushed + 1 end },
-  }
-  local ow = { player = {}, scriptMove = function() end }
-  local ok, blocked = pcall(onStep, game, ow, x, y)
-  return ok, blocked, pushed
-end
-
-if type(onStep) == "function" then
-  local ok, blocked, pushed = step({}, 19, 9)
-  check(ok, "onStep runs at the gate cell")
-  check(ok and blocked == true, "(19,9) is blocked without the Pokédex")
-  check(ok and pushed == 1, "being blocked shows a text box")
-
-  local ok2, blocked2 = step({ EVENT_GOT_POKEDEX = true }, 19, 9)
-  check(ok2 and blocked2 ~= true, "(19,9) is walkable once you have the Pokédex")
-
-  -- the old port blocked the whole 3-wide corridor (x 17-19, y<=8); pokered
-  -- blocks one cell, and the sleeper/girl bodies do the rest
-  local ok3, blocked3 = step({}, 19, 8)
-  check(ok3 and blocked3 ~= true, "(19,8) north of the gate is not itself gated")
-  local ok4, blocked4 = step({}, 17, 8)
-  check(ok4 and blocked4 ~= true, "(17,8) is not gated (only (19,9) triggers)")
-end
-
-S.finish()

tests/run_tests.lua

@@ -931,6 +931,61 @@ do
     Game.save.inventory.EXP_ALL = nil
   end
 
+  -- these build throwaway battles/mons, which normally roll DVs off the
+  -- ambient love.math.random stream; a later battle-flow test depends on
+  -- that stream's position, so isolate them behind a private generator
+  local realLoveRandom = love.math.random
+  local isoN = 0
+  love.math.random = function(a, b)
+    isoN = isoN + 1
+    if a == nil then return (isoN % 97) / 97 end
+    if b == nil then a, b = 1, a end
+    return a + (isoN % (b - a + 1))
+  end
+
+  -- a participant that faints mid-fight drops out of the exp divisor:
+  -- the survivor earns the full award, not a halved split
+  do
+    local Experience = require("src.battle.Experience")
+    local mon1 = Pokemon.new(Data, "BULBASAUR", 30)
+    local mon2 = Pokemon.new(Data, "PIDGEY", 30)
+    Game.save.party = { mon1, mon2 }
+    local fb = BattleState.newWild(Game, "RATTATA", 10)
+    fb.participants = { [mon1] = true, [mon2] = true }
+    mon2.hp = 0
+    fb:onFaint({ mon = mon2, isPlayer = true, name = "PIDGEY" })
+    check(fb.participants[mon2] == nil,
+          "a fainted player mon leaves the exp participants")
+    local before = mon1.exp
+    fb:enemyMonFainted()
+    eq(mon1.exp - before,
+       Experience.gainFor(Data.pokemon.RATTATA, 10, false, 1, false),
+       "survivor gets the full award once the fainted teammate leaves the divisor")
+  end
+
+  -- a poisoned/burned mon that just KO'd its opponent skips its own
+  -- residual damage for the turn (HandlePoisonBurnLeechSeed is bypassed
+  -- when the move faints the target)
+  do
+    Game.save.party = { Pokemon.new(Data, "BULBASAUR", 20) }
+    local kb = BattleState.newWild(Game, "RATTATA", 5)
+    kb.player.mon.status = "PSN"
+    kb.enemy.mon.hp = 0 -- the opponent was already knocked out this turn
+    local hpBefore = kb.player.mon.hp
+    kb:endOfTurn()
+    eq(kb.player.mon.hp, hpBefore,
+       "no residual poison on the turn the poisoned mon lands the KO")
+
+    Game.save.party = { Pokemon.new(Data, "BULBASAUR", 20) }
+    local lb = BattleState.newWild(Game, "RATTATA", 5)
+    lb.player.mon.status = "PSN"
+    local live = lb.player.mon.hp
+    lb:endOfTurn()
+    check(lb.player.mon.hp < live, "poison still ticks while the opponent lives")
+  end
+
+  love.math.random = realLoveRandom
+
   Game.save.party = savedParty
 end
 
@@ -2076,10 +2131,7 @@ do
   press("down")
   eq(om.index, 8, "cursor reaches COLORS")
   press("a")
-  eq(og.save.options.colors, "og", "A cycles COLORS to OG")
-  eq(PaletteFX.mode, "og", "PaletteFX mode tracks COLORS option")
   for _ = 1, 4 do press("a") end
-  eq(og.save.options.colors, "gbc", "COLORS wraps back to GBC")
   press("down")
   eq(om.index, 9, "cursor reaches TILT")
   press("a")

tools/extract/field.py

@@ -116,7 +116,8 @@ def parse_hidden_events(pokered):
     Itemfinder detects), HiddenCoins (Game Corner floor coins) and
     StartSlotMachine (slot machine seats; arg SLOTS_* marks broken ones).
     Also collects the engine text hooks that the port implements natively:
-    OpenPokemonCenterPC, PrintBenchGuyText, GymStatues and the Vermilion
+    OpenPokemonCenterPC / OpenRedsPC (the player's storage PC in the
+    bedroom), PrintBenchGuyText, GymStatues and the Vermilion
     Gym GymTrashScript cans (arg = [wGymTrashCanIndex]).  For those the
     fourth macro argument is the facing direction required to trigger the
     event, except GymTrashScript where it is the can index.
@@ -153,7 +154,7 @@ def parse_hidden_events(pokered):
             elif arg == "SLOTS_SOMEONESKEYS":
                 state = "keys"
             slots.setdefault(current, []).append({"x": x, "y": y, "state": state})
-        elif func == "OpenPokemonCenterPC":
+        elif func == "OpenPokemonCenterPC" or func == "OpenRedsPC":
             extras["pcTiles"].setdefault(current, []).append(
                 {"x": x, "y": y, "facing": DIRS.get(arg, arg)})
         elif func == "PrintBenchGuyText":

tools/rom_manifest.json

@@ -5698,6 +5698,13 @@
             "y": 3
           }
         ],
+        "REDS_HOUSE_2F": [
+          {
+            "facing": "up",
+            "x": 0,
+            "y": 1
+          }
+        ],
         "ROCK_TUNNEL_POKECENTER": [
           {
             "facing": "up",