CLOSES #941, CLOSES #1081, CLOSES #1349, CLOSES #1602, CLOSES #1618, CLOSES #1624, CLOSES #1630, CLOSES #1633, CLOSES #1661, CLOSES #1669, CLOSES #1676, CLOSES #1731, CLOSES #1739, CLOSES #1740, CLOSES #1742, CLOSES #1744, CLOSES #1753, CLOSES #1757, CLOSES #1758, CLOSES #1760, CLOSES #1761, CLOSES #1762, CLOSES #1763, CLOSES #1765, CLOSES #1770, CLOSES #1777, CLOSES #1781, CLOSES #1783, CLOSES #1784, CLOSES #1785, CLOSES #1787, CLOSES #1788, CLOSES #1789, CLOSES #1790, CLOSES #1792, CLOSES #1797, CLOSES #1803

data/scripts/celadon_eevee.lua

@@ -42,27 +42,29 @@ local LINK_HEADINGS = { "HOW TO LINK", "COLOSSEUM", "TRADE CENTER" }
 
 local function linkCableHelp(game)
   local text = game.data.text or {}
-  local items, showMenu, askHeading
+  local items, menu, openMenu
-  function showMenu()
+  local function closeAll()
-    game.stack:push(Menu.new(game, items,
+    game.stack:pop()
-      { tx = 0, ty = 0, tw = 15, th = 10, rowStep = 1 }))
-  end
-  function askHeading()
-    game.stack:push(TextBox.new(game,
-      text._LinkCableHelpText2 or "Which heading do\nyou want to read?",
-      showMenu))
   end
   items = {}
   for i, label in ipairs(LINK_HEADINGS) do
-    items[i] = { label = label, onSelect = function()
+    items[i] = { label = label, keepOpen = true, onSelect = function()
       game.stack:push(TextBox.new(game,
-        text["_LinkCableInfoText" .. i] or label, askHeading))
+        text["_LinkCableInfoText" .. i] or label))
     end }
   end
-  items[#items + 1] = { label = "STOP READING" }
+  items[#items + 1] = { label = "STOP READING", onSelect = closeAll }
+  menu = Menu.new(game, items,
+    { tx = 0, ty = 0, tw = 15, th = 10, rowStep = 2, itemY = 2,
+      onCancel = closeAll })
+  function openMenu() game.stack:push(menu) end
   game.stack:push(TextBox.new(game,
     text._LinkCableHelpText1 or "TRAINER TIPS\fUsing a Game Link\nCable",
-    askHeading))
+    function()
+      game.stack:push(TextBox.new(game,
+        text._LinkCableHelpText2 or "Which heading do\nyou want to read?",
+        nil, { stay = { onShown = openMenu } }))
+    end))
 end
 
 return {
@@ -84,21 +86,15 @@ return {
       { "jump_if_false", 5 },                                  -- 2
       { "hide_object", "CELADON_MANSION_ROOF_HOUSE",
         "CELADONMANSION_ROOF_HOUSE_EEVEE_POKEBALL" },          -- 3 (old saves)
-      { "jump", 13 },                                          -- 4
+      { "jump", 11 },                                          -- 4
-      { "give_pokemon", "EEVEE", 25 },                         -- 5
+      { "give_pokemon", "EEVEE", 25, false, true },            -- 5
-      { "jump_if_false", 12 },                                 -- 6 (party+box full)
+      { "jump_if_false", 10 },                                 -- 6 (party+box full)
-      -- flag + HideObject before the jingle and GotMonText: the nickname
+      -- scripts/CeladonMansionRoofHouse.asm:17-20 (#426)
-      -- prompt inside give_pokemon and the text row both yield, and a
-      -- script that dies there would leave the EEVEE taken with the ball
-      -- still on the table and the gift claimable again (#426).  The row
-      -- count is unchanged, so the numeric jump targets still hold.
       { "set_flag", "EVENT_GOT_EEVEE" },                       -- 7
       { "hide_object", "CELADON_MANSION_ROOF_HOUSE",
         "CELADONMANSION_ROOF_HOUSE_EEVEE_POKEBALL" },          -- 8
-      { "text_sound", "Get_Item1" },                           -- 9 (GotMonText jingle)
+      { "jump", 11 },                                          -- 9
-      { "show_text", "_GotMonText", { RAM = "EEVEE" } },       -- 10
+      { "show_text", "_BoxIsFullText" },                       -- 10
-      { "jump", 13 },                                          -- 11
-      { "show_text", "_BoxIsFullText" },                       -- 12
     },
   },
 }

data/scripts/flavor/celadon_city.lua

@@ -2,12 +2,10 @@
 return {
   CELADON_CITY = {
     talk = {
-      -- CeladonCityPoliwrathText (scripts/CeladonCity.asm): text_far
-      -- _CeladonCityPoliwrathText, then plays the POLIWRATH cry and ends.
-      -- The cry playback has no port-side equivalent command, so we just
-      -- show the flavor line.
       TEXT_CELADONCITY_POLIWRATH = {
         {"face_player"},
+        -- pokered/scripts/CeladonCity.asm:90
+        {"play_cry", "POLIWRATH", true},
         {"show_text", "_CeladonCityPoliwrathText"},
       },
     },

data/scripts/flavor/celadon_mansion_1f.lua

@@ -2,30 +2,24 @@
 return {
   CELADON_MANSION_1F = {
     talk = {
-      -- CeladonMansion1FClefairyText (scripts/CeladonMansion1F.asm): text_far
-      -- _CeladonMansion1FClefairyText, then plays the CLEFAIRY cry and ends.
-      -- The cry playback has no port-side equivalent command, so we just
-      -- show the flavor line.
       TEXT_CELADONMANSION1F_CLEFAIRY = {
         {"face_player"},
+        -- pokered/scripts/CeladonMansion1F.asm:27
+        {"play_cry", "CLEFAIRY", true},
         {"show_text", "_CeladonMansion1FClefairyText"},
       },
 
-      -- CeladonMansion1FMeowthText (scripts/CeladonMansion1F.asm): text_far
-      -- _CeladonMansion1FMeowthText, then plays the MEOWTH cry and ends.
-      -- The cry playback has no port-side equivalent command, so we just
-      -- show the flavor line.
       TEXT_CELADONMANSION1F_MEOWTH = {
         {"face_player"},
+        -- pokered/scripts/CeladonMansion1F.asm:18
+        {"play_cry", "MEOWTH", true},
         {"show_text", "_CeladonMansion1FMeowthText"},
       },
 
-      -- CeladonMansion1FNidoranFText (scripts/CeladonMansion1F.asm): text_far
-      -- _CeladonMansion1FNidoranFText, then plays the NIDORAN_F cry and ends.
-      -- The cry playback has no port-side equivalent command, so we just
-      -- show the flavor line.
       TEXT_CELADONMANSION1F_NIDORANF = {
         {"face_player"},
+        -- pokered/scripts/CeladonMansion1F.asm:33
+        {"play_cry", "NIDORAN_F", true},
         {"show_text", "_CeladonMansion1FNidoranFText"},
       },
     },

data/scripts/flavor/lavender_cubone_house.lua

@@ -4,11 +4,10 @@
 return {
   LAVENDER_CUBONE_HOUSE = {
     talk = {
-      -- LavenderCuboneHouseCuboneText: text_far _LavenderCuboneHouseCuboneText,
+      -- LavenderCuboneHouse.asm:10
-      -- then text_asm plays the CUBONE cry. Cry playback has no Commands
-      -- equivalent in this port, so just show the line.
       TEXT_LAVENDERCUBONEHOUSE_CUBONE = {
         { "face_player" },
+        { "play_cry", "CUBONE", true },
         { "show_text", "_LavenderCuboneHouseCuboneText" },
       },
 

data/scripts/flavor/mr_fujis_house.lua

@@ -31,16 +31,15 @@ M.MR_FUJIS_HOUSE = {
       { "show_text", "_MrFujisHouseLittleGirlPokemonAreNiceToHugText" },    -- 6
     },
 
-    -- scripts/MrFujisHouse.asm MrFujisHousePsyduckText: text_far then
+    -- scripts/MrFujisHouse.asm:56
-    -- PlayCry(PSYDUCK). Cry playback isn't modeled by Commands, so just
-    -- show the flavor text.
     TEXT_MRFUJISHOUSE_PSYDUCK = {
+      { "play_cry", "PSYDUCK", true },
       { "show_text", "_MrFujisHousePsyduckText" },
     },
 
-    -- scripts/MrFujisHouse.asm MrFujisHouseNidorinoText: text_far then
+    -- scripts/MrFujisHouse.asm:63
-    -- PlayCry(NIDORINO).
     TEXT_MRFUJISHOUSE_NIDORINO = {
+      { "play_cry", "NIDORINO", true },
       { "show_text", "_MrFujisHouseNidorinoText" },
     },
   },

data/scripts/flavor/route_16_fly_house.lua

@@ -4,10 +4,9 @@
 return {
   ROUTE_16_FLY_HOUSE = {
     talk = {
-      -- Route16FlyHouseFearowText: text_asm just prints the one line and
+      -- scripts/Route16FlyHouse.asm:45-51
-      -- plays the FEAROW cry (no cry-playback command exists in this
-      -- port's Commands vocabulary, so only the text is ported).
       TEXT_ROUTE16FLYHOUSE_FEAROW = {
+        { "play_cry", "FEAROW", true },
         { "show_text", "_Route16FlyHouseFearowText" },
       },
     },

data/scripts/story.lua

@@ -1047,6 +1047,7 @@ local championsRoomRivalScript = {
   -- numeric 26 into a jump ONTO the closing HALL_OF_FAME warp instead of past
   -- it, so a returning champion warped straight into the induction.
   { "jump_if_true", "end" },                                -- 3
+  { "set_option", "animations", true },                     -- scripts/ChampionsRoom.asm:57
   { "show_text", "_ChampionsRoomRivalIntroText" },          -- 4
   -- ChampionsRoomRivalReadyToBattleScript plays MUSIC_FINAL_BATTLE after
   -- the intro text, before the battle itself (#706); pushBattle's wipe-time

data/scripts/story4.lua

@@ -359,18 +359,22 @@ M.ROUTE_16_FLY_HOUSE = {
     TEXT_ROUTE16FLYHOUSE_BRUNETTE_GIRL = function(game, ow, npc, done)
       local t = text(game)
       if game.save.flags.EVENT_GOT_HM02 then
-        push(game, t._Route16FlyHouseBrunetteGirlHm02ExplanationText
+        push(game, t._Route16FlyHouseBrunetteGirlHM02ExplanationText
-          or "HM02 is FLY!\fIt will whisk you\nback to any town!", done)
+          or "HM02 is FLY.\nIt will take you\vback to any town.\fPut it to good\nuse!", done)
         return
       end
       push(game, t._Route16FlyHouseBrunetteGirlText
-        or "Shh! It's a\nsecret!\fMy POKéMON's\nHM02, take it!", function()
+        or "Oh, you found my\nsecret retreat!", function()
         if not require("src.inventory.Bag").add(game.save, "HM_FLY", 1) then
-          push(game, "You don't have\nroom for HM02!", done)
+          push(game, t._Route16FlyHouseBrunetteGirlHM02NoRoomText
+            or "You don't have any\nroom for this.", done)
           return
         end
         game.save.flags.EVENT_GOT_HM02 = true
-        push(game, ("%s got\nHM02!"):format(game.save.player.name), done)
+        -- scripts/Route16FlyHouse.asm:32-35
+        push(game, fill(t._Route16FlyHouseBrunetteGirlReceivedHM02Text
+          or "{PLAYER} received\nHM02!", { player = game.save.player.name }),
+          done, require("src.render.TextBox").soundOpts(game, "Get_Key_Item"))
       end)
     end,
   },

main.lua

@@ -1170,6 +1170,17 @@ function love.run()
   -- per-frame sleep-granularity jitter.
   local nextFrame = love.timer and love.timer.getTime() or 0
   local dt = 0
+  local idleFor = 0
+  local SLEEP_FLOOR = 0.001
+  local WAKE = {
+    keypressed = true, keyreleased = true, textinput = true,
+    mousepressed = true, mousereleased = true, mousemoved = true,
+    wheelmoved = true, touchpressed = true, touchreleased = true,
+    touchmoved = true, joystickpressed = true, joystickreleased = true,
+    joystickhat = true, gamepadpressed = true, gamepadreleased = true,
+    joystickadded = true, joystickremoved = true, filedropped = true,
+    directorydropped = true, focus = true, visible = true, resize = true,
+  }
 
   return function()
     -- process events
@@ -1188,17 +1199,34 @@ function love.run()
             return a or 0
           end
         end
+        if WAKE[name] then
+          idleFor = 0
+        elseif name == "joystickaxis" and type(c) == "number" and math.abs(c) > 0.5 then
+          idleFor = 0
+        end
         love.handlers[name](a, b, c, d, e, f)
       end
     end
 
     -- update dt
     if love.timer then dt = love.timer.step() end
+    idleFor = idleFor + dt
 
     -- call update and draw
     if love.update then love.update(dt) end
 
-    if love.graphics and love.graphics.isActive() then
+    local visible = not (love.window and love.window.isVisible)
+      or love.window.isVisible()
+    local focused = not (love.window and love.window.hasFocus)
+      or love.window.hasFocus()
+    local cap = FrameCap.current
+    if not visible then
+      cap = 10
+    elseif Importer and (not focused or idleFor > 30) then
+      cap = 15
+    end
+
+    if visible and love.graphics and love.graphics.isActive() then
       love.graphics.origin()
       love.graphics.clear(love.graphics.getBackgroundColor())
       if love.draw then love.draw() end
@@ -1209,9 +1237,9 @@ function love.run()
       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
+        -- responsive.  The pacer yields to vsync inside a 1ms dead band, so
-        -- than the cap the remainder is <= 0 and this rounds to a no-op.
+        -- when the panel already paces at or below the cap it is a no-op.
-        local budget = 1 / FrameCap.current
+        local budget = 1 / cap
         nextFrame = nextFrame + budget
         local now = love.timer.getTime()
         -- A stall (alt-tab, a GC pause, a blocked import) can leave the
@@ -1222,8 +1250,8 @@ function love.run()
         end
         while true do
           local remaining = nextFrame - love.timer.getTime()
-          if remaining <= 0 then break end
+          if remaining <= SLEEP_FLOOR then break end
-          love.timer.sleep(remaining < 0.001 and remaining or 0.001)
+          love.timer.sleep(0.001)
         end
       else
         love.timer.sleep(0.001)

src/battle/BattleState.lua

@@ -97,7 +97,7 @@ end
 -- space.
 function BattleState:extendedHUD()
   local options = self.game and self.game.save and self.game.save.options
-  local bg = options and options.battleBg
+  local bg = options and self:bgMode()
   return self:wideLayout()
      and options and options.battleHud == "extended"
      and ((options.battleFit == "fixed"
@@ -108,12 +108,12 @@ end
 function BattleState:extendedWorldHUD()
   local options = self.game and self.game.save and self.game.save.options
   return self:extendedHUD() and options
-     and options.battleFit == "fixed" and options.battleBg == "world"
+     and options.battleFit == "fixed" and self:bgMode() == "world"
 end
 
 function BattleState:extendedBlackHUD()
   local options = self.game and self.game.save and self.game.save.options
-  return self:extendedHUD() and options and options.battleBg == "black"
+  return self:extendedHUD() and options and self:bgMode() == "black"
 end
 
 -- BATTLE BG: what fills the screen AROUND the battle -- the letterbox voids
@@ -130,6 +130,10 @@ end
 -- opaque 160x144 field over the top, so only the surround changes.
 function BattleState:bgMode()
   local options = self.game and self.game.save and self.game.save.options
+  if options and self:wideLayout() and options.battleFit == "fill"
+     and options.battleHud == "extended" then
+    return "white"
+  end
   local mode = options and options.battleBg
   if mode == "black" or mode == "world" then return mode end
   return "white"
@@ -212,6 +216,13 @@ local BALL_ANIMS = {
   SHAKE_ANIM = true, SHOWPIC_ANIM = true,
 }
 
+-- engine/battle/effects.asm:552
+local ENEMY_STAT_DOWN_MISS = {
+  ATTACK_DOWN1_EFFECT = true, DEFENSE_DOWN1_EFFECT = true,
+  DEFENSE_DOWN2_EFFECT = true, SPEED_DOWN1_EFFECT = true,
+  ACCURACY_DOWN1_EFFECT = true,
+}
+
 local imageCache = {}
 -- The three tables below are keyed by the Image OBJECT, not by a path, and a
 -- running battle holds the pics it built at enter() (battler.sprite,
@@ -229,6 +240,11 @@ local imagePadLeft = setmetatable({}, WEAK_KEYS)
 -- image -> { path, pal } so palette-fade variants (see fadeImage) can be
 -- rebuilt for any battle pic, whatever code loaded it
 local imageMeta = setmetatable({}, WEAK_KEYS)
+local function mattedPic(path)
+  return path:sub(1, 17) == "assets/generated/"
+      or path:sub(1, 17) == "save/mod-derived/"
+end
+
 -- pal = { name, colors } recolors the 4 GB shades like the Super Game Boy.
 -- trueColor art (14 §the 4-shade contract) opts out of the quantize
 -- entirely, so its palette variant collapses back onto the plain path.
@@ -254,6 +270,7 @@ local function getImage(path, pal, trueColor)
         end)
       end
       local w, h = id:getDimensions()
+      if mattedPic(Assets.resolve(path)) then
         local bottom = h - 1
         while bottom >= 0 do
           local opaque = false
@@ -274,9 +291,10 @@ local function getImage(path, pal, trueColor)
           if opaque then break end
           left = left + 1
         end
-      img = love.graphics.newImage(id)
         pad = h - 1 - bottom
         padL = left
+      end
+      img = love.graphics.newImage(id)
     else
       img = Assets.image(path) -- headless stub: no pixel access
     end
@@ -2214,6 +2232,9 @@ function BattleState:update(dt)
       self.waitFrames = nil
       if destination == "menu" then
         self.introSlide = nil
+        -- engine/battle/core.asm:2007
+        self.msgHold = nil
+        self.shown = nil
         self.phase = "menu"
       elseif destination == "finish" then
         self:finish()
@@ -3041,18 +3062,33 @@ local BGP_INVERT   = { [0] = 3, 2, 1, 0 }              -- $1b (flash phase 1)
 local BGP_WHITE    = { [0] = 0, 0, 0, 0 }              -- $00 (flash phase 2)
 local BGP_DARK     = { [0] = 3, 3, 2, 1 }              -- $6f DarkScreenPalette
 local BGP_LIGHT    = { [0] = 0, 0, 1, 2 }              -- $90 LightScreenPalette
-local BGP_DARKEN   = { [0] = 0, 1, 3, 3 }              -- $f4 DarkenMonPalette (SGB)
+local BGP_DARKEN_SGB  = { [0] = 0, 1, 3, 3 }           -- $f4
+local BGP_DARKEN_MONO = { [0] = 1, 2, 3, 3 }           -- $f9
+
+-- engine/battle/animations.asm:1090
+local function onSgb()
+  local m = require("src.render.PaletteFX").mode
+  return m == "gbc" or m == "gbc_inv"
+end
 
 -- FlashScreenLongSGB (animations.asm:1010): 12 BGP values per cycle,
 -- 3 cycles; the first cycle holds each for 2 frames, the rest for 1
 -- (FlashScreenLongDelay)
-local FLASH_LONG_MAPS = {
+local FLASH_LONG_SGB = {
   { [0] = 0, 2, 3, 3 }, { [0] = 0, 3, 3, 3 }, { [0] = 3, 3, 3, 3 },
   { [0] = 0, 3, 3, 3 }, { [0] = 0, 2, 3, 3 }, { [0] = 0, 1, 2, 3 },
   { [0] = 0, 0, 1, 2 }, { [0] = 0, 0, 0, 1 }, { [0] = 0, 0, 0, 0 },
   { [0] = 0, 0, 0, 1 }, { [0] = 0, 0, 1, 2 }, { [0] = 0, 1, 2, 3 },
 }
 
+-- engine/battle/animations.asm:992
+local FLASH_LONG_MONO = {
+  { [0] = 1, 2, 3, 3 }, { [0] = 2, 3, 3, 3 }, { [0] = 3, 3, 3, 3 },
+  { [0] = 2, 3, 3, 3 }, { [0] = 1, 2, 3, 3 }, { [0] = 0, 1, 2, 3 },
+  { [0] = 0, 0, 1, 2 }, { [0] = 0, 0, 0, 1 }, { [0] = 0, 0, 0, 0 },
+  { [0] = 0, 0, 0, 1 }, { [0] = 0, 0, 1, 2 }, { [0] = 0, 1, 2, 3 },
+}
+
 -- the shade map in force this frame (a running flash wins over the
 -- persistent palette)
 function BattleState:activeBgp()
@@ -3186,7 +3222,7 @@ function BattleState:applyAnimEffect(ev)
   elseif e == "SE_LIGHT_SCREEN_PALETTE" then
     fx.bgp = BGP_LIGHT
   elseif e == "SE_DARKEN_MON_PALETTE" then
-    fx.bgp = BGP_DARKEN
+    fx.bgp = onSgb() and BGP_DARKEN_SGB or BGP_DARKEN_MONO
   elseif e == "SE_RESET_SCREEN_PALETTE" then
     fx.bgp = nil
   elseif e == "SE_DARK_SCREEN_FLASH" then
@@ -3196,8 +3232,9 @@ function BattleState:applyAnimEffect(ev)
                   idx = 1, left = 2 }
   elseif e == "SE_FLASH_SCREEN_LONG" then
     local steps = {}
+    local maps = onSgb() and FLASH_LONG_SGB or FLASH_LONG_MONO
     for cycle = 1, 3 do
-      for _, m in ipairs(FLASH_LONG_MAPS) do
+      for _, m in ipairs(maps) do
         steps[#steps + 1] = { map = m, frames = (cycle == 1) and 2 or 1 }
       end
     end
@@ -4139,6 +4176,12 @@ function BattleState:performMove(user, target, moveInst, isCalled)
 
   -- pure status moves
   if move.power == 0 and record and record.kind == "primary" and record.run then
+    if ENEMY_STAT_DOWN_MISS[move.effect] and not user.isPlayer
+       and self.kind ~= "link" and self.rng(0, 255) < 64 then
+      self:cancelMoveAnim()
+      self:sayNext(self:romText("_AttackMissedText", "%s's\nattack missed!", displayName(user)))
+      return
+    end
     -- accuracy-checked status effects run MoveHitTest, which has no
     -- 100%-accuracy early-out (even Thunder Wave misses on the 255
     -- roll) and misses outright against a mid-Fly/Dig target; the
@@ -4417,7 +4460,11 @@ function BattleState:awardExp()
       -- new current HP (house convention: potions drain the bar too, see
       -- itemUsed) so the bar grows instead.  Only the active player battler
       -- shares its table with the HUD; other party mons (EXP.ALL) have no bar.
-      if mon == self.player.mon then self:drainNext() end
+      if mon == self.player.mon then
+        -- engine/battle/experience.asm:236
+        self.player.badgeExtraBoosts = nil
+        self:drainNext()
+      end
       for _, moveId in ipairs(Experience.movesLearnedAt(
           self.data.pokemon[mon.species], lv)) do
         self:learnMove(mon, moveId)
@@ -5920,7 +5967,9 @@ function BattleState:animSpriteColors(s, px, py)
   local P
   -- engine/battle/animations.asm:551 (.notSGB)
   if PaletteFX.usesSpriteObp() then
-    P = PaletteFX.ogObj()
+    -- engine/battle/init_battle_variables.asm:18
+    P = require("src.core.GameVersion").isBlue() and PaletteFX.GBC_OBJ_BLUE
+        or PaletteFX.GBC_OBJ
     if key == "f0" then key = "e4" elseif key == "f0x" then key = "e4x" end
   else
     P = self:zoneColorsAt(px or (s.x - 8 + 4), py or (s.y - 16 + 4))

src/battle/Damage.lua

@@ -41,6 +41,34 @@ local function badgeBoost(battler, stat)
   return nil
 end
 
+-- engine/battle/core.asm:6454
+function Damage.applyBadgeBoost(battler, stat, value)
+  if battler.hazeStatReset then return value end
+  local row = badgeBoost(battler, stat)
+  if not row then return value end
+  local extra = battler.badgeExtraBoosts and battler.badgeExtraBoosts[stat] or 0
+  for _ = 1, 1 + extra do
+    value = math.min(999, math.floor(value * (row.num or 9) / (row.den or 8)))
+  end
+  return value
+end
+
+-- engine/battle/effects.asm:498,689
+function Damage.reapplyBadgeBoosts(battler, changedStat)
+  if not battler or not battler.badges then return end
+  local extra = battler.badgeExtraBoosts
+  if not extra then extra = {} battler.badgeExtraBoosts = extra end
+  for _, row in ipairs(battler.badgeBoosts or Damage.BADGE_BOOSTS) do
+    if battler.badges[row.badge] then
+      if row.stat == changedStat then
+        extra[row.stat] = 0
+      else
+        extra[row.stat] = (extra[row.stat] or 0) + 1
+      end
+    end
+  end
+end
+
 -- the merged status record for a battler's persistent condition, or nil
 local function statusRecord(battler)
   return Status.recordFor(battler.statuses, battler.mon.status)
@@ -178,14 +206,8 @@ function Damage.compute(ruleset, attacker, defender, move, opts)
     -- badge boosts (x9/8), engine/battle/core.asm ApplyBadgeStatBoosts:
     -- Boulder -> attack, Thunder -> defense, Soul -> speed (TurnOrder),
     -- Volcano -> special
-    local atkBoost = badgeBoost(attacker, atkStat)
+    atk = Damage.applyBadgeBoost(attacker, atkStat, atk)
-    if atkBoost then
+    dfn = Damage.applyBadgeBoost(defender, defStat, dfn)
-      atk = math.floor(atk * (atkBoost.num or 9) / (atkBoost.den or 8))
-    end
-    local defBoost = badgeBoost(defender, defStat)
-    if defBoost then
-      dfn = math.floor(dfn * (defBoost.num or 9) / (defBoost.den or 8))
-    end
     -- burn halves physical attack (applied as part of the stat in Gen 1;
     -- the status record's statPenalty names the stat it cuts).
     -- hazeStatReset suppresses it: Haze (haze.asm ResetStats) copied the

src/battle/MoveEffects.lua

@@ -11,6 +11,7 @@
 -- is the registry view of all three -- the merged Data.move_effects a
 -- battle dispatches on serves these same objects.
 
+local Damage = require("src.battle.Damage")
 local Logger = require("src.core.Logger")
 local StatusRegistry = require("src.battle.StatusRegistry")
 local TurnOrder = require("src.battle.TurnOrder")
@@ -57,6 +58,10 @@ local function changeStage(battle, who, stat, delta, fromEnemy)
   -- recomputed and QuarterSpeedDueToParalysis/HalveAttackDueToBurn re-run,
   -- re-baking the burn/para penalty and ending Haze's temporary lift.
   who.hazeStatReset = nil
+  if battle.ruleset and battle.ruleset.badgeBoostReapplyBug
+     and battle.kind ~= "link" and who == battle.player then
+    Damage.reapplyBadgeBoosts(who, stat)
+  end
   -- _MonsStatsRoseText/_MonsStatsFellText: "X's / STAT rose!"; the
   -- two-stage variants scroll "greatly" onto a third line
   local label = Strings(STAT_LABEL[stat])  -- looked up here, not at require (#811)
@@ -132,6 +137,11 @@ end
 
 local function statDownSide(stat)
   return function(battle, user, target)
+    -- engine/battle/effects.asm:552
+    if not user.isPlayer and battle.kind ~= "link"
+       and battle.rng(0, 255) < 64 then
+      return {}
+    end
     if target.substituteHP then return {} end
     if battle.rng(0, 255) >= 85 then return {} end -- 33 percent + 1 (85/256)
     -- StatModifierDownEffect's side-effect branch never runs MoveHitTest,
@@ -254,6 +264,7 @@ MoveEffects.primary = {
       -- Attack-halving and paralysis Speed-quartering on BOTH battlers
       -- until the next stat recompute (a stage change or switch-in).
       b.hazeStatReset = true
+      b.badgeExtraBoosts = nil
     end
     -- Gen 1 also removes the enemy's major status; if that cured sleep
     -- or freeze, the target forfeits its move this turn (haze.asm

src/battle/TurnOrder.lua

@@ -14,15 +14,7 @@ local function effectiveSpeed(battler)
                                battler.stages and battler.stages.speed or 0)
   -- ApplyBadgeStatBoosts: the SOULBADGE boosts speed; the rows come from
   -- the battler's merged badgeBoosts with the vanilla list as fallback
-  local badges = battler.badges
+  spd = Damage.applyBadgeBoost(battler, "speed", spd)
-  if badges then
-    for _, row in ipairs(battler.badgeBoosts or Damage.BADGE_BOOSTS) do
-      if row.stat == "speed" and badges[row.badge] then
-        spd = math.floor(spd * (row.num or 9) / (row.den or 8))
-        break
-      end
-    end
-  end
   -- paralysis quarters speed (the status record's statPenalty);
   -- hazeStatReset suppresses it because Haze (haze.asm ResetStats)
   -- copied the unmodified speed over the quartered battle stat, lifting

src/battle/WideBattle.lua

@@ -97,6 +97,19 @@ local function battleIsTopState(battle)
   return not (stack and stack.top) or stack:top() == battle
 end
 
+-- engine/menus/party_menu.asm:4
+local function coveredByOpaqueState(battle)
+  local stack = battle.game and battle.game.stack
+  local states = stack and stack.states
+  if not states then return false end
+  local above = false
+  for i = 1, #states do
+    if above and states[i] and states[i].isOpaque then return true end
+    if states[i] == battle then above = true end
+  end
+  return false
+end
+
 local function anchorHUD(battle, x, y, w, h, anchor)
   if not battle:extendedHUD() or not battleIsTopState(battle) then return end
   local renderer = battle.game and battle.game.renderer
@@ -351,7 +364,7 @@ function WideBattle.draw(battle)
     g.rectangle("fill", 0, 0, WideBattle.WIDTH, WideBattle.HEIGHT)
   end
   -- AskName clears the field the same way the classic layout does
-  if battle.blankForAskName then return end
+  if battle.blankForAskName or coveredByOpaqueState(battle) then return end
 
   local fx = battle.fx
   local sx = (fx and fx.shakeX) or 0

src/battle/gen2/Battle.lua

@@ -645,6 +645,7 @@ function Battle:smartAiState()
     -- wPlayerSubStatus5 & SUBSTATUS_LOCK_ON: the enemy's OWN Lock-On, since
     -- BattleCommand_LockOn sets the bit on the target it was aimed at.
     playerLockOn = playerState.lockOn or nil,
+    playerIdentified = playerState.identified or nil,
     playerPhysicalMoves = physical,
     enemyRage = enemyState.rage,
     enemyRageCount = enemyState.rageCount,
@@ -1082,7 +1083,7 @@ function Battle:hitOnce(attacker, defender, def, opts)
   local attackerStages = self.stages[self:sideOf(attacker)]
   local defenderStages = self.stages[self:sideOf(defender)]
   local types = self.data.type_chart and self.data.type_chart.types
-  local matchups = self.data.type_chart and self.data.type_chart.matchups
+  local matchups = self:matchupsAgainst(defender)
 
   local heldEffect, heldParam = self:heldEffect(attacker, "damage")
   -- BattleCommand_Critical: SUBSTATUS_FOCUS_ENERGY (Focus Energy or a
@@ -1202,6 +1203,8 @@ function Battle:hitOnce(attacker, defender, def, opts)
   if def.effect == "EFFECT_FALSE_SWIPE" and damage >= (defender.hp or 0) then
     damage = math.max(0, (defender.hp or 0) - 1)
   end
+  -- engine/battle_anims/anim_commands.asm:1200
+  if self.moveEvent then self.moveEvent.effectiveness = info.effectiveness end
   return self:dealDamage(attacker, defender, damage, {
     critical = critical, effectiveness = info.effectiveness,
     -- Counter answers physical damage and Mirror Coat special, so what kind
@@ -1690,6 +1693,13 @@ function Battle:useMove(attacker, defender, moveId)
       text = ("Magnitude %d!"):format(number) })
   end
 
+  -- data/moves/effects.asm:1607, :1649
+  if def.effect == "EFFECT_RETURN" then
+    powerOverride = Effects.happinessPower(attacker.happiness)
+  elseif def.effect == "EFFECT_FRUSTRATION" then
+    powerOverride = Effects.happinessPower(attacker.happiness, true)
+  end
+
   if not sureHit
       and not self:accuracyRoll(def, attacker, defender) then
     -- data/moves/effects.asm:148-151: `selfdestruct` sits between checkhit and
@@ -1744,7 +1754,7 @@ function Battle:useMove(attacker, defender, moveId)
     -- thing that stops SONIC BOOM, NIGHT SHADE or SUPER FANG.
     local defenderTypes = (self:speciesDef(defender) or {}).types
       or defender.types
-    local matchups = self.data.type_chart and self.data.type_chart.matchups
+    local matchups = self:matchupsAgainst(defender)
     if Damage.typeMultiplier(def.type, defenderTypes, matchups) == 0 then
       self:markMissed()
       self:emit({ kind = "message",
@@ -2119,6 +2129,21 @@ Battle.MOVE_EFFECTS.EFFECT_LOCK_ON = function(self, attacker, defender)
     text = self:monName(attacker) .. " took aim!" })
 end
 
+-- engine/battle/move_effects/foresight.asm
+Battle.MOVE_EFFECTS.EFFECT_FORESIGHT = function(self, attacker, defender,
+    def, _, sureHit)
+  if not sureHit
+      and not self:accuracyRoll(def, attacker, defender) then
+    return fail(self)
+  end
+  local target = self:volatile(defender)
+  if target.vanished or target.identified then return fail(self) end
+  target.identified = true
+  self:emit({ kind = "message",
+    text = self:monName(attacker) .. " identified "
+      .. self:monName(defender) .. "!" })
+end
+
 -- BattleCommand_CheckHit's .LockOn: the flag is read AND cleared by the next
 -- move aimed at the mon carrying it, whether or not that move was the one the
 -- lock-on was meant for, and whether or not the exception at :1683-1688 then
@@ -2166,9 +2191,15 @@ function Battle:accuracyRoll(def, attacker, defender, accuracy)
 end
 
 function Battle:vanillaAccuracyRoll(accuracy, attacker, defender)
-  return Damage.rollHit(self:moveAccuracy(accuracy, defender),
+  local acc = self.stages[self:sideOf(attacker)].accuracy
-    self.stages[self:sideOf(attacker)].accuracy,
+  local eva = self.stages[self:sideOf(defender)].evasion
-    self.stages[self:sideOf(defender)].evasion, self.random)
+  -- engine/battle/effect_commands.asm:1786
+  if defender and self:volatile(defender).identified
+      and (eva or 0) >= (acc or 0) then
+    acc, eva = 0, 0
+  end
+  return Damage.rollHit(self:moveAccuracy(accuracy, defender), acc, eva,
+    self.random)
 end
 
 -- BattleCommand_StatDown's SUBSTATUS_MIST arm (a GUARD SPEC): a drop the FOE
@@ -2354,7 +2385,7 @@ Battle.MOVE_EFFECTS.EFFECT_FUTURE_SIGHT = function(self, attacker, defender, def
       stages = self.stages[self:sideOf(defender)],
     },
     types = self.data.type_chart and self.data.type_chart.types,
-    matchups = self.data.type_chart and self.data.type_chart.matchups,
+    matchups = self:matchupsAgainst(defender),
     random = self.random,
   })
   state.futureSight = Effects.FUTURE_SIGHT_TURNS
@@ -3072,6 +3103,30 @@ function Battle:safeguarded(mon)
   return (self.screens[self:sideOf(mon)].safeguard or 0) > 0
 end
 
+-- engine/battle/effect_commands.asm:1305
+function Battle:matchupsAgainst(defender)
+  local chart = self.data.type_chart
+  local rows = chart and chart.matchups
+  if not rows or not defender then return rows end
+  if not self:volatile(defender).identified then return rows end
+  local skipped = chart.foresightMatchups
+  if not skipped or #skipped == 0 then return rows end
+  if not self.identifiedMatchups then
+    local drop = {}
+    for _, row in ipairs(skipped) do
+      drop[tostring(row.attacker) .. "/" .. tostring(row.defender)] = true
+    end
+    local out = {}
+    for _, row in ipairs(rows) do
+      if not drop[tostring(row.attacker) .. "/" .. tostring(row.defender)] then
+        out[#out + 1] = row
+      end
+    end
+    self.identifiedMatchups = out
+  end
+  return self.identifiedMatchups
+end
+
 -- `source` is the battler that inflicted it, carried only so
 -- battle.status_inflicted can name it the way Gen 1's does.
 -- BattleCommand_Paralyze and BattleCommand_Poison refuse on a zero matchup,
@@ -3084,7 +3139,7 @@ function Battle:statusRefusedByType(defender, moveType, status)
   end
   local types = (self:speciesDef(defender) or {}).types or defender.types or {}
   if moveType then
-    local matchups = self.data.type_chart and self.data.type_chart.matchups
+    local matchups = self:matchupsAgainst(defender)
     if Damage.typeMultiplier(moveType, types, matchups) == 0 then return true end
   end
   if status == "poison" or status == "toxic" then
@@ -3917,6 +3972,8 @@ end
 -- check.  Split out because playerAttack needs the same answer.
 function Battle:lockedInMove(mon)
   local state = self:volatile(mon)
+  -- engine/battle/core.asm:543
+  if state.chargeMove then return state.chargeMove end
   if state.rolloutLock then return state.rolloutLock end
   if state.rampageMove and (state.rampageTurns or 0) > 0 then
     return state.rampageMove

src/battle/gen2/Effects.lua

@@ -284,6 +284,14 @@ function Effects.magnitudePower(random)
   return last[2], last[3]
 end
 
+-- engine/battle/move_effects/return.asm:1-24, frustration.asm:1-25
+function Effects.happinessPower(happiness, frustration)
+  local h = happiness or 0
+  if h < 0 then h = 0 elseif h > 255 then h = 255 end
+  if frustration then h = 255 - h end
+  return math.floor(h * 10 / 25)
+end
+
 -- ------------------------------------------------------------------- weather
 --
 -- BattleCommand_StartRain / StartSun / StartSandstorm all set wWeatherCount to

src/battle/gen2/Prize.lua

@@ -58,9 +58,12 @@ Prize.AMULET_COIN = "AMULET_COIN"
 -- data/text/battle.asm.  Declared here and formatted at the call site so
 -- Strings.source is what registers them, the same way Decorations declares
 -- its own five.  No line markers: every battle message in this port is one
--- flowing string that Chrome.wrap breaks to the box.
+-- flowing string that Chrome.wrap breaks to the box, except SentSomeToMomText,
+-- which keeps the cart's own `line`/`cont` breaks because it does not fit two
+-- rows.
 local GOT_MONEY = Strings.source("%s got %s%d for winning!")
-local SENT_SOME = Strings.source("%s got %s%d for winning! Sent some to MOM!")
+-- data/text/battle.asm:179-185
+local SENT_SOME = Strings.source("%s got %s%d\nfor winning!\vSent some to MOM!")
 -- The half and all texts really are this short on the cart: they replace the
 -- money line rather than following it, which is a quirk no Gold player can
 -- see because BankOfMom only ever writes MOM_SAVING_SOME_MONEY_F.

src/battle/rulesets/gen1_faithful.lua

@@ -23,4 +23,6 @@ return {
   -- (core.asm:426-464): poison/burn/leech seed tick before the slower
   -- mon acts, not in an end-of-round sweep like Gen 3+.
   residualAfterMove = true,
+  -- engine/battle/effects.asm:498,689
+  badgeBoostReapplyBug = true,
 }

src/core/BattleCheckpoint.lua

@@ -27,7 +27,7 @@ local BATTLER_FIELDS = {
   "chargeReady", "invulnerable", "mustRecharge",
   "thrashTurns", "thrashAnnounced", "focusEnergy", "leechSeeded",
   "lightScreen", "reflect", "mist", "xAccuracy", "lastMove", "flinched",
-  "skipMove", "hazeStatReset", "drainFloor", "drainHold", "trappingTurns",
+  "skipMove", "hazeStatReset", "badgeExtraBoosts", "drainFloor", "drainHold", "trappingTurns",
   "trapMove", "trapDamage", "fainted",
   "aiLayer2",
 }

src/core/FixedStep.lua

@@ -6,6 +6,9 @@ local FixedStep = {}
 
 FixedStep.STEP = 1 / 60
 local MAX_ACCUM = 0.25 -- avoid spiral of death after a stall
+local SMOOTH_FRAMES = 4
+local SMOOTH_MAX = 1 / 60 * 2.5
+local STEP_EPS = 1 / 60 * 0.02
 
 -- Phase the accumulator is re-seeded with once an absorbed hitch frame has
 -- been paid for.  Half a step is the balanced point: a frame has to come in
@@ -23,6 +26,7 @@ function FixedStep:init(callback)
   self.accum = 0
   self.callback = callback
   self.suppressCatchup = false
+  self.dtHistory, self.dtSum = nil, 0
 end
 
 -- The anti-spiral clamp doubles as a steps-per-frame ceiling (0.25s = 15
@@ -39,12 +43,26 @@ function FixedStep:update(dt)
   -- the burst it would otherwise release doesn't play out as a slide.
   if self.suppressCatchup then
     self.suppressCatchup = false
+    self.dtHistory, self.dtSum = nil, 0
     self.accum = self.STEP * RESEED_PHASE
     self.callback(self.STEP)
     return
   end
+  if dt > 0 and dt <= SMOOTH_MAX then
+    local hist = self.dtHistory
+    if not hist then hist = {}; self.dtHistory = hist; self.dtSum = 0 end
+    hist[#hist + 1] = dt
+    self.dtSum = self.dtSum + dt
+    if #hist > SMOOTH_FRAMES then
+      self.dtSum = self.dtSum - hist[1]
+      table.remove(hist, 1)
+    end
+    dt = self.dtSum / #hist
+  else
+    self.dtHistory, self.dtSum = nil, 0
+  end
   self.accum = math.min(self.accum + dt, self.maxAccum or MAX_ACCUM)
-  while self.accum >= self.STEP do
+  while self.accum >= self.STEP - STEP_EPS do
     self.accum = self.accum - self.STEP
     self.callback(self.STEP)
   end

src/core/Game.lua

@@ -1324,9 +1324,7 @@ function Game:restoreSave(loaded, recovered, opts)
   self:adoptSave(loaded)
   -- SaveData.load already attached the standalone options.lua table
   self:applyOptions(loaded.options)
-  -- saves from before OT/ID stamping: backfill with the player's (after
+  -- saves from before OT/ID stamping: backfill with the player's
-  -- the scrub, so every mon the stamp loop sees is known)
-  SaveData.repairTradedOtIds(loaded)
   local stamp = require("src.battle.BattleState").stampOT
   for _, mon in ipairs(loaded.party or {}) do stamp(loaded, mon) end
   for _, box in ipairs(loaded.boxes or {}) do

src/core/Game2.lua

@@ -350,6 +350,10 @@ function Game2:showTitle()
     onContinue = function()
       self:showMainMenu()
     end,
+    -- engine/menus/intro_menu.asm:848-889
+    onTimeout = function()
+      self:showCopyright()
+    end,
   })
 end
 

src/core/SaveData.lua

@@ -1983,6 +1983,11 @@ SaveData.addCoreMigration(3, function(save)
   end
 end)
 
+-- #1461 repair, one-shot on pre-format-5 saves
+SaveData.addCoreMigration(4, function(save)
+  SaveData.repairTradedOtIds(save)
+end)
+
 -- ------- write
 
 -- Game progress only; options are written separately via saveOptions.
@@ -2394,8 +2399,8 @@ function SaveData.applyPostGameHome(save, boot)
 end
 
 -- 0.1.82-0.1.9x loads stamped the player's own id onto traded mons and saved
--- it, which reads back as home-caught.  A caught mon can never carry
+-- it, which reads back as home-caught.  Run only as the pre-format-5
--- traded=true, so clearing that pair is safe on every load.  #1461
+-- migration: a same-id trade partner makes that pair legitimate.  #1461
 function SaveData.repairTradedOtIds(save)
   local playerId = save and save.player and save.player.id
   if playerId == nil then return 0 end

src/core/TouchControls.lua

@@ -217,10 +217,6 @@ function TouchControls.defaultLayout(ww, wh, ox, oy, scale)
   local abW = dpadW * 0.46
   local ssW = dpadW * 0.30
   local margin = dpadW * 0.12
-  local ok, GameVersion = pcall(require, "src.core.GameVersion")
-  if ok and GameVersion.generation and GameVersion.generation() == 2 then
-    margin = math.max(margin, math.min(ww * 0.10, 72))
-  end
   return {
     dpad = { cx = ox + margin + dpadW / 2, cy = oy + wh - margin - dpadW / 2, w = dpadW },
     a = { cx = ox + ww - margin - abW * 0.55, cy = oy + wh - margin - abW * 1.75, w = abW },

src/core/Version.lua

@@ -18,7 +18,7 @@ local Version = {
                           -- exceeds the shell it provides.
   modApi = 2,             -- mod API major (manifest `api`)
   linkProtocol = 2,       -- link handshake wire version (Handshake.PROTOCOL)
-  saveFormat = 4,         -- save.meta.format
+  saveFormat = 5,         -- save.meta.format
   cache = "rom-cache-v5", -- ROM import cache generation (RomImporter marker)
 }
 

src/core/chip_worker.lua

@@ -89,10 +89,12 @@ local function handle(cmd)
   return false
 end
 
+local idleWait = false
+
 while true do
   -- drain every pending command first, so a stop/new-play is seen promptly
   local quit = false
-  local cmd = cmdCh:pop()
+  local cmd = idleWait and cmdCh:demand(0.05) or cmdCh:pop()
   while cmd do
     if handle(cmd) then quit = true end
     cmd = cmdCh:pop()
@@ -100,6 +102,7 @@ while true do
   if quit then break end
 
   if engine and not finished and gen and outCh:getCount() < LOOKAHEAD then
+    idleWait = false
     local activeGen = gen
     local ok, sd = pcall(ChipSynth.soundData, engine, BUF, 2)
     if not ok then
@@ -113,8 +116,10 @@ while true do
         finished = true
       end
     end
+  elseif engine and not finished and gen then
+    idleWait = false
+    love.timer.sleep(0.005)
   else
-    -- nothing to do (idle, or the look-ahead is full): yield the core
+    idleWait = true
-    love.timer.sleep(0.001)
   end
 end

src/core/gen2/MomShopping.lua

@@ -164,14 +164,12 @@ local function receiveItemToPc(save, id, data)
   save.pcItems = save.pcItems or {}
   local pc = save.pcItems
   local held = pc[id] or 0
-  if held == 0 then
   local cap = (data and data.field and data.field.pcItemCap) or PC_ITEM_CAPACITY
-    local stacks = 0
+  local function stacksFor(n) return math.ceil((n or 0) / MAX_STACK) end
-    for _ in pairs(pc) do stacks = stacks + 1 end
+  local used = 0
-    if stacks >= cap then return false end
+  for _, count in pairs(pc) do used = used + stacksFor(count) end
-  elseif held + 1 > MAX_STACK then
+  -- engine/items/items.asm:156 PutItemInPocket
-    return false
+  if used + stacksFor(held + 1) - stacksFor(held) > cap then return false end
-  end
   pc[id] = held + 1
   return true
 end

src/core/gen2/Save.lua

@@ -343,6 +343,7 @@ Save.OPTIONS_KEY = "gold"
 
 local SHARED_KEYS = {
   touchControls = true, haptics = true, screenPos = true,
+  videoMode = true,
   mods = true, modsByVersion = true, modsGen2 = true,
   modOptions = true, modProfiles = true, modProfilesSeeded = true,
   activeProfile = true,
@@ -361,12 +362,9 @@ function Save.loadOptions(fs)
   end
   if type(loaded) == "table" then
     for key in pairs(SHARED_KEYS) do
-      if loaded[key] ~= nil then options[key] = loaded[key] end
+      if loaded[key] ~= nil then
-    end
+        options[key] = loaded[key]
-  end
+      elseif type(stored) == "table" and stored[key] ~= nil then
-  if type(stored) == "table" then
-    for key in pairs(SHARED_KEYS) do
-      if options[key] == nil and stored[key] ~= nil then
         options[key] = stored[key]
       end
     end

src/import/CacheContract.lua

@@ -10,7 +10,7 @@ local CacheContract = {}
 
 CacheContract.FORMAT = "rom-cache-v10:"
 CacheContract.VERSION_FORMAT = {
-  crystal = "rom-cache-v10-crystal2:",
+  crystal = "rom-cache-v10-crystal3:",
 }
 CacheContract.MARKER_PATH = "rom-cache.complete"
 

src/import/LauncherSettings.lua

@@ -23,6 +23,11 @@ local SaveData = require("src.core.SaveData")
 
 local LauncherSettings = {}
 
+local function bgLocked(opts)
+  return opts.battleLayout == "wide" and opts.battleFit == "fill"
+     and opts.battleHud == "extended"
+end
+
 local function wrapIndex(i, n)
   i = i % n
   if i < 0 then i = i + n end
@@ -156,8 +161,6 @@ local function coreRows(opts, hooks)
       opts.battleLayout = opts.battleLayout == "wide" and "og" or "wide"
       if opts.battleLayout ~= "wide" then
         opts.battleHud = "standard"
-      elseif opts.battleFit == "fill" and opts.battleHud == "extended" then
-        opts.battleBg = "white"
       end
       return true
     end)
@@ -167,10 +170,6 @@ local function coreRows(opts, hooks)
     end,
     function()
       opts.battleFit = opts.battleFit == "fill" and "fixed" or "fill"
-      if opts.battleFit == "fill" and opts.battleLayout == "wide"
-         and opts.battleHud == "extended" then
-        opts.battleBg = "white"
-      end
       return true
     end)
   add(Strings("BATTLE HUD"),
@@ -185,28 +184,17 @@ local function coreRows(opts, hooks)
         return false
       end
       opts.battleHud = opts.battleHud == "extended" and "standard" or "extended"
-      if opts.battleHud == "extended" and opts.battleFit == "fill" then
-        opts.battleBg = "white"
-      end
       return true
     end)
   add(Strings("BATTLE BG"),
     function()
-      if opts.battleLayout == "wide" and opts.battleFit == "fill"
+      if bgLocked(opts) then return Strings("AUTO (FILL HUD)") end
-         and opts.battleHud == "extended" then
-        opts.battleBg = "white"
-        return Strings("AUTO")
-      end
       if opts.battleBg == "black" then return Strings("BLACK") end
       if opts.battleBg == "world" then return Strings("WORLD") end
       return Strings("WHITE")
     end,
     function(dir)
-      if opts.battleLayout == "wide" and opts.battleFit == "fill"
+      if bgLocked(opts) then return false end
-         and opts.battleHud == "extended" then
-        opts.battleBg = "white"
-        return false
-      end
       local order = { "white", "black", "world" }
       local cur = 1
       for i, mode in ipairs(order) do
@@ -563,7 +551,7 @@ end
 -- src/ui/gen2/OptionsMenu.lua's ROWS; when editing one, keep the two in sync.
 local GEN2_KEY = "gold"
 
-local function gen2Rows(opts, hooks)
+local function gen2Rows(opts, hooks, shared)
   local rows = {}
   local function add(label, value, step)
     rows[#rows + 1] = { label = label, value = value, step = step }
@@ -669,9 +657,9 @@ local function gen2Rows(opts, hooks)
   local okVm, VideoMode = pcall(require, "src.core.VideoMode")
   if okVm then
     add(Strings("VIDEO MODE"),
-      function() return VideoMode.modeLabel(opts.videoMode) end,
+      function() return VideoMode.modeLabel(shared.videoMode) end,
       function(dir)
-        opts.videoMode = VideoMode.cycle(opts.videoMode, dir)
+        shared.videoMode = VideoMode.cycle(shared.videoMode, dir)
         return true
       end)
   end
@@ -690,7 +678,7 @@ local function gen2Rows(opts, hooks)
   add(Strings("BATTLE BG"), ladder(opts, "battleBg",
     { { "white", "WHITE" }, { "black", "BLACK" } }, "white"))
 
-  addTouchRows(rows, add, opts, hooks)
+  addTouchRows(rows, add, shared, hooks)
 
   return rows
 end
@@ -718,7 +706,7 @@ function LauncherSettings.open(hooks, version)
       opts[GEN2_KEY] = block
     end
     sections = {
-      { title = Strings("OPTIONS"), rows = gen2Rows(block, hooks) },
+      { title = Strings("OPTIONS"), rows = gen2Rows(block, hooks, opts) },
     }
   else
     sections = {

src/import/RomExtractorGen2.lua

@@ -151,6 +151,19 @@ local TEXT_BUFFERS = {
   [0xc602] = "wOTTrademonSpeciesName",
   [0xc618] = "wOTTrademonSenderName",
 }
+-- ../pokecrystal/ram/wram.asm:1925,2333
+local TEXT_BUFFERS_CRYSTAL = {
+  [0xd050] = "wMonOrItemNameBuffer",
+  [0xd073] = "wStringBuffer1",
+  [0xd086] = "wStringBuffer2",
+  [0xd099] = "wStringBuffer3",
+  [0xd0ac] = "wStringBuffer4",
+  [0xd0bf] = "wStringBuffer5",
+  [0xc6d1] = "wPlayerTrademonSpeciesName",
+  [0xc6e7] = "wPlayerTrademonSenderName",
+  [0xc703] = "wOTTrademonSpeciesName",
+  [0xc719] = "wOTTrademonSenderName",
+}
 -- The text commands that print nothing and carry no argument
 -- (macros/scripts/text.asm, in TextCommands order): TX_LOW, TX_SCROLL,
 -- TX_PAUSE, TX_WAIT_BUTTON, TX_DAY, and the six TX_SOUND_* jingles.
@@ -2295,6 +2308,8 @@ function RomExtractorGen2:extractTitle()
     trailBobAmplitude = silver and 3 or 2,
     trailPhaseStep = silver and 7 or 3,
     trailPhase = silver and 0 or nil,
+    -- TitleScreenTimer (engine/menus/intro_menu.asm:951-966).
+    timeoutFrames = silver and (73 * 60 + 36) or (84 * 60 + 16),
   }
   self:write("title", data)
   return data
@@ -2805,6 +2820,8 @@ end
 -- is which alongside the text lets a caller fill them in order without
 -- changing a marker every screen already reads.
 function RomExtractorGen2:decodeGen2Text(bank, address, charmap, buffers)
+  local textBuffers = (self.edition == "crystal") and TEXT_BUFFERS_CRYSTAL
+    or TEXT_BUFFERS
   local out = {}
   local i = 0
   local hops = 0
@@ -2840,7 +2857,7 @@ function RomExtractorGen2:decodeGen2Text(bank, address, charmap, buffers)
       out[#out + 1] = "{STRBUF}"
       if buffers then
         local target = self.rom:word(bank, address + i + 1)
-        buffers[#buffers + 1] = TEXT_BUFFERS[target] or target
+        buffers[#buffers + 1] = textBuffers[target] or target
       end
       i = i + 2
     elseif b == 0x4e or b == 0x4f then

src/inventory/ItemEffects.lua

@@ -310,6 +310,11 @@ function ItemEffects.use(data, save, itemId, target, battle, moveIndex, ow)
           "Nothing happened!") }
       end
       b.stages[stat] = cur + 1
+      b.hazeStatReset = nil
+      if battle.ruleset and battle.ruleset.badgeBoostReapplyBug
+         and battle.kind ~= "link" then
+        require("src.battle.Damage").reapplyBadgeBoosts(b, stat)
+      end
       return "consumed", { Strings("%s's\n%s rose!", b.name, Strings(STAT_LABEL[stat])) }
     end
     -- ItemUseDireHit/ItemUseGuardSpec always set the bit and consume

src/render/Renderer.lua

@@ -817,7 +817,7 @@ function Renderer:frameRects()
   -- GB pixel stops being a whole number of screen pixels, which is the trade
   -- the setting exists to offer.  Clamped on the horizontal too, so a narrow
   -- window scales to fit instead of overflowing off both sides.
-  if self.uiFill then
+  if self.uiFill and not FaithfulRes.scaleCap() then
     Up = math.min(ph / uih, pw / uiw)
   end
   if uiw * Up > pw or uih * Up > ph then

src/script/Commands.lua

@@ -529,6 +529,16 @@ function Commands.set_field(ctx, key, value)
   ctx.save[key] = value
 end
 
+-- scripts/ChampionsRoom.asm:57
+function Commands.set_option(ctx, key, value)
+  local o = ctx.save.options
+  if not o then
+    o = {}
+    ctx.save.options = o
+  end
+  o[key] = value
+end
+
 function Commands.load_player_starter_name(ctx)
   local flags = ctx.save.flags or {}
   local species = flags.EVENT_CHOSE_PIKACHU and "PIKACHU"
@@ -720,7 +730,8 @@ end
 -- Box deposits also print SentToBoxText (give_pokemon.asm:36-37).
 -- skipNickname suppresses AskName for callers that name the gift themselves;
 -- no vanilla script uses it (pokeyellow scripts/OaksLab.asm, #1013)
-function Commands.give_pokemon(ctx, species, level, skipNickname)
+-- gotText prints GotMonText ahead of AskName (give_pokemon.asm:46).
+function Commands.give_pokemon(ctx, species, level, skipNickname, gotText)
   -- Native mods can transform a gift before the Pokémon object is created.
   -- This is intentionally an event rather than a special-case starter hook:
   -- mods can use the same seam for story gifts, fossils, or custom scripts.
@@ -754,6 +765,11 @@ function Commands.give_pokemon(ctx, species, level, skipNickname)
   ctx.lastCheck = true
   ctx.addedToParty = addedToParty
   ctx.boxNum = boxNum
+  -- engine/events/give_pokemon.asm:46
+  if gotText and ctx.runner then
+    Commands.text_sound(ctx, "Get_Item1")
+    Commands.show_text(ctx, "_GotMonText", { RAM = species })
+  end
   -- AskName: both AddPartyMon and SendNewMonToBox; skip mod-set nicks
   -- and callback-style callers with no script runner to yield on.
   if not gift.nickname and not skipNickname and ctx.runner then
@@ -1303,11 +1319,14 @@ function FadeOverlay:update()
 end
 
 function FadeOverlay:draw()
-  if self.color == "white" then
+  local shade = (self.color == "white") and 1 or 0
-    love.graphics.setColor(1, 1, 1, self.alpha)
+  -- home/fade.asm:26
-  else
+  local r = self.game and self.game.renderer
-    love.graphics.setColor(0, 0, 0, self.alpha)
+  if r then
+    r.screenVeil = { shade, self.alpha }
+    return
   end
+  love.graphics.setColor(shade, shade, shade, self.alpha)
   love.graphics.rectangle("fill", 0, 0, 160, 144)
   love.graphics.setColor(1, 1, 1, 1)
 end

src/script/gen2/CallAsm.lua

@@ -120,6 +120,67 @@ CallAsm.SITES = {
   ["04:66d1"] = "TryReceiveItem",
 }
 
+-- pokegold-symbols/pokesilver.sym: bank $03 sits two bytes earlier in Silver.
+CallAsm.SITES_SILVER = {
+  ["03:4749"] = "GetPartyNickname",
+  ["03:4853"] = "CutDownTreeOrGrass",
+  ["03:4b47"] = "CheckContinueWaterfall",
+  ["03:4d13"] = "SetStrengthFlag",
+  ["03:4d79"] = "TryStrengthOW",
+  ["03:4e1e"] = "DisappearWhirlpool",
+  ["03:4f7d"] = "HasRockSmash",
+  ["03:5094"] = "PutTheRodAway",
+  ["03:506b"] = "Fishing_CheckFacingUp",
+  ["03:51c5"] = "AskCutScript_CheckMap",
+}
+
+-- pokecrystal-symbols/pokecrystal.sym: Crystal's own addresses for the same sites.
+CallAsm.SITES_CRYSTAL = {
+  ["25:6f76"] = "GiveItemScript_DummyFunction",
+  ["04:65cd"] = "StartMenu",
+  ["04:7327"] = "SelectMenu",
+  ["05:6f5e"] = "OverworldHatchEgg",
+  ["25:6706"] = "EnableWildEncounters",
+  ["24:426f"] = "RingTwice_StartCall",
+  ["24:42eb"] = "HangUp",
+  ["04:53e5"] = "InitCallReceiveDelay",
+  ["24:425c"] = "LoadBillScript",
+  ["24:426a"] = "LoadElmScript",
+  ["3f:5017"] = "MomTriesToBuySomething_ASMFunction",
+  ["04:6599"] = "ItemfinderSound",
+  ["14:46ef"] = "SweetScentEncounter",
+  ["02:431e"] = "TrainerWalkToPlayer",
+  ["14:4753"] = "CheckCanUseSquirtbottle",
+  ["04:764f"] = "SetMemEvent",
+  ["14:4658"] = "PlayPoisonSFX",
+  ["14:467b"] = "CheckWhitedOut",
+  ["04:64fa"] = "OverworldBGMap",
+  ["04:650a"] = "BattleBGMap",
+  ["04:6513"] = "HalveMoney",
+  ["04:6527"] = "GetWhiteoutSpawn",
+  ["03:4706"] = "GetPartyNickname",
+  ["03:4810"] = "CutDownTreeOrGrass",
+  ["23:47e1"] = "BlindingFlash",
+  ["00:3016"] = "HideSprites",
+  ["23:4aed"] = "FlyFromAnim",
+  ["05:54f1"] = "SkipUpdateMapSprites",
+  ["23:4b33"] = "FlyToAnim",
+  ["05:4157"] = "LoadWalkingSpritesGFX",
+  ["03:4b38"] = "CheckContinueWaterfall",
+  ["03:4d12"] = "SetStrengthFlag",
+  ["03:4d78"] = "TryStrengthOW",
+  ["03:4e1d"] = "DisappearWhirlpool",
+  ["23:480a"] = "ShakeHeadbuttTree",
+  ["03:4f7c"] = "HasRockSmash",
+  ["03:5095"] = "PutTheRodAway",
+  ["03:506c"] = "Fishing_CheckFacingUp",
+  ["2e:44b3"] = "LoadFishingGFX",
+  ["03:51ba"] = "AskCutScript_CheckMap",
+  ["2e:41ea"] = "TreeMonEncounter",
+  ["2e:4219"] = "RockMonEncounter",
+  ["04:62f8"] = "TryReceiveItem",
+}
+
 -- The three WRAM addresses `memcall` / `memcallasm` / `memjump` take instead of
 -- a routine.  Not sites: the pointer AT the address is written at run time
 -- (LoadMemScript for the queued script, the phone engine for the other two),
@@ -714,7 +775,8 @@ end
 -- at import time), and the address pair is the fallback that always works.
 function CallAsm.nameFor(label, bank, addr)
   if label and CallAsm.ALL[label] then return label end
-  return CallAsm.SITES[CallAsm.key(bank, addr)]
+  local key = CallAsm.key(bank, addr)
+  return CallAsm.SITES[key] or CallAsm.SITES_SILVER[key] or CallAsm.SITES_CRYSTAL[key]
 end
 
 -- Run a routine by name.  Returns the byte the asm leaves in wScriptVar, or

src/ui/Diploma.lua

@@ -8,8 +8,13 @@ local Assets = require("src.render.Assets")
 local Font = require("src.render.Font")
 local PaletteFX = require("src.render.PaletteFX")
 local Sprites = require("src.pokemon.Sprites")
+local SpriteRenderer = require("src.render.SpriteRenderer")
 local Strings = require("src.core.Strings")
 
+-- engine/events/diploma.asm:65
+local OBP0_90 = { { 255, 255, 255 }, { 255, 255, 255 },
+                  { 170, 170, 170 }, { 85, 85, 85 } }
+
 local Diploma = {}
 Diploma.__index = Diploma
 Diploma.isOpaque = true
@@ -49,20 +54,18 @@ local function drawFrameBox(frame, tx, ty, tw, th)
   local img = frame.img
   local q = frame.quads
   love.graphics.setColor(1, 1, 1, 1)
-  -- corners
+  -- engine/link/cable_club.asm:937
-  love.graphics.draw(img, q[0], tx * 8, ty * 8)
+  love.graphics.draw(img, q[2], tx * 8, ty * 8)
-  love.graphics.draw(img, q[2], (tx + tw - 1) * 8, ty * 8)
+  love.graphics.draw(img, q[4], (tx + tw - 1) * 8, ty * 8)
   love.graphics.draw(img, q[6], tx * 8, (ty + th - 1) * 8)
-  love.graphics.draw(img, q[8], (tx + tw - 1) * 8, (ty + th - 1) * 8)
+  love.graphics.draw(img, q[7], (tx + tw - 1) * 8, (ty + th - 1) * 8)
-  -- horizontal edges
   for x = 1, tw - 2 do
-    love.graphics.draw(img, q[1], (tx + x) * 8, ty * 8)
+    love.graphics.draw(img, q[3], (tx + x) * 8, ty * 8)
-    love.graphics.draw(img, q[7], (tx + x) * 8, (ty + th - 1) * 8)
+    love.graphics.draw(img, q[0], (tx + x) * 8, (ty + th - 1) * 8)
   end
-  -- vertical edges
   for y = 1, th - 2 do
-    love.graphics.draw(img, q[3], tx * 8, (ty + y) * 8)
+    love.graphics.draw(img, q[5], tx * 8, (ty + y) * 8)
-    love.graphics.draw(img, q[5], (tx + tw - 1) * 8, (ty + y) * 8)
+    love.graphics.draw(img, q[1], (tx + tw - 1) * 8, (ty + y) * 8)
   end
 end
 
@@ -91,13 +94,31 @@ function Diploma.render(game)
   drawFrameBox(frame, 0, 0, 20, 18)
 
   -- 2. Draw Player character sprite: farcall DrawPlayerCharacter
-  -- Shifted +33 px right from title screen base (82 + 33 = 115, y = 80)
+  -- engine/movie/title.asm:321
-  local picPath, picTrueColor = Sprites.playerPath(
+  local title = (game.data and game.data.field and game.data.field.title) or {}
-    game.data, "front", { kind = "diploma" })
+  local titlePlayer = title.player
-  local pic = tryImage(picPath)
+  if type(titlePlayer) == "table" then titlePlayer = titlePlayer.path end
+  local picPath, picTrueColor = Sprites.playerPic(
+    titlePlayer or "assets/generated/title/player.png",
+    { side = "front", kind = "diploma", data = game.data })
+  local pic
+  if picPath then
+    if picTrueColor then
+      pic = tryImage(picPath)
+    else
+      local ok, faded = pcall(SpriteRenderer.obpImage, picPath, OBP0_90,
+                              "diploma")
+      pic = (ok and faded) or tryImage(picPath)
+    end
+  end
   if pic then
     love.graphics.setColor(1, 1, 1, 1)
+    local sx, sy, sw, sh = love.graphics.getScissor()
+    -- engine/events/diploma.asm:44
+    love.graphics.setScissor(8, 8, 144, 128)
     love.graphics.draw(pic, 115, 80)
+    if sx then love.graphics.setScissor(sx, sy, sw, sh)
+    else love.graphics.setScissor() end
     if picTrueColor then
       PaletteFX.markTrueColor(115, 80, pic:getDimensions())
     end

src/ui/EvolutionState.lua

@@ -95,11 +95,28 @@ function EvolutionState.new(game, mon, newSpecies, onDone, via)
   self.t = 0
   self.done = false
   self.canceled = false
+  -- engine/movie/evolution.asm:41-46
+  Music.stop()
+  self.crySrc = require("src.core.Sound").playCry(game.data, mon.species)
+  self.cryT = 0
+  self.cryWait = self.crySrc ~= nil
+  if not self.cryWait then
     Music.play(game.data, Music.special(game.data, "evolution"))
+  end
   return self
 end
 
 function EvolutionState:update(dt)
+  if self.cryWait then
+    self.cryT = self.cryT + 1
+    local src = self.crySrc
+    local playing = src and src.isPlaying and src:isPlaying()
+    if self.cryT >= 3 and (not playing or self.cryT > 180) then
+      self.cryWait, self.crySrc = false, nil
+      Music.play(self.game.data, Music.special(self.game.data, "evolution"))
+    end
+    return
+  end
   self.t = self.t + 1
   if self.done then return end
   local game = self.game

src/ui/OptionsMenu.lua

@@ -157,6 +157,11 @@ end
 -- new SHADER FX 2 row below it -- when both are set, ShaderFX.render() runs
 -- main's chain into secondary's, same as stacking two RetroArch presets.
 
+local function bgLocked(o)
+  return o.battleLayout == "wide" and o.battleFit == "fill"
+     and o.battleHud == "extended"
+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)
@@ -197,8 +202,6 @@ local function buildRows(game)
         o.battleLayout = o.battleLayout == "wide" and "og" or "wide"
         if o.battleLayout ~= "wide" then
           o.battleHud = "standard"
-        elseif o.battleFit == "fill" and o.battleHud == "extended" then
-          o.battleBg = "white"
         end
         return true
       end },
@@ -215,10 +218,6 @@ local function buildRows(game)
       step = function(g)
         local o = g.save.options
         o.battleFit = o.battleFit == "fill" and "fixed" or "fill"
-        if o.battleFit == "fill" and o.battleLayout == "wide"
-           and o.battleHud == "extended" then
-          o.battleBg = "white"
-        end
         return true
       end },
     { id = "battleHud", label = Strings("BATTLE HUD"),
@@ -237,9 +236,6 @@ local function buildRows(game)
           return false
         end
         o.battleHud = o.battleHud == "extended" and "standard" or "extended"
-        if o.battleHud == "extended" and o.battleFit == "fill" then
-          o.battleBg = "white"
-        end
         return true
       end },
     -- What sits behind and around the battle.  WHITE is the classic paper
@@ -249,11 +245,7 @@ local function buildRows(game)
     { id = "battleBg", label = Strings("BATTLE BG"),
       value = function(g)
         local o = g.save.options
-        if o.battleLayout == "wide" and o.battleFit == "fill"
+        if bgLocked(o) then return Strings("AUTO (FILL HUD)") end
-           and o.battleHud == "extended" then
-          o.battleBg = "white"
-          return Strings("AUTO")
-        end
         local m = o.battleBg
         if m == "black" then return Strings("BLACK") end
         if m == "world" then return Strings("WORLD") end
@@ -261,11 +253,7 @@ local function buildRows(game)
       end,
       step = function(g, dir)
         local o = g.save.options
-        if o.battleLayout == "wide" and o.battleFit == "fill"
+        if bgLocked(o) then return false end
-           and o.battleHud == "extended" then
-          o.battleBg = "white"
-          return false
-        end
         local order = { "white", "black", "world" }
         local cur = 1
         for i, m in ipairs(order) do if o.battleBg == m then cur = i break end end

src/ui/PlayerPC.lua

@@ -19,18 +19,23 @@ local function itemName(game, id)
   return def and def.name or id
 end
 
-local function buildItems(game, store)
+local function buildItems(game, store, order)
   local items = {}
-  local ids = {}
+  local ids = order
+  if not ids then
+    ids = {}
     for id in pairs(store) do table.insert(ids, id) end
     table.sort(ids)
+  end
   for _, id in ipairs(ids) do
+    if store[id] then
       table.insert(items, {
         value = id,
         label = itemName(game, id),
         right = "x" .. store[id],
       })
     end
+  end
   return items
 end
 
@@ -105,12 +110,9 @@ local function deposit(game)
   local pc = game.save.pcItems
   local inv = game.save.inventory
   local Bag = require("src.inventory.Bag")
-  -- badges live in save.inventory alongside items but are not depositable
+  -- engine/menus/players_pc.asm:99 wListPointer = wNumBagItems, so deposit order == bag order
-  local depositable = {}
+  local order = Bag.order(game.save, game.data)
-  for id, count in pairs(inv) do
+  game.stack:push(ListMenu.new(game, "DEPOSIT ITEM", buildItems(game, inv, order), {
-    if not Bag.isBadge(id) then depositable[id] = count end
-  end
-  game.stack:push(ListMenu.new(game, "DEPOSIT ITEM", buildItems(game, depositable), {
     kind = "pc_item_deposit",
     messageBox = true,
     noSound = true, -- PlayerPCMenu holds BIT_NO_MENU_BUTTON_SOUND (#570)

src/ui/SkinStudio.lua

@@ -687,8 +687,10 @@ function Studio.deleteEntry(id)
       local opts = SaveData.loadOptions()
       local tc = type(opts.touchControls) == "table" and opts.touchControls or {}
       if tc.skin == id then
-        tc.enabled, tc.skin = false, nil
+        tc.enabled, tc.skin = true, nil
+        opts.touchControls = tc
         SaveData.saveOptions(opts)
+        TouchControls:applyOptions(opts)
       end
       Studio.refreshAvailable()
       setStatus("Deleted " .. id)

src/ui/TownMap.lua

@@ -334,10 +334,9 @@ function TownMap:update(dt)
   end
 end
 
--- OG RED bakes the boot-ROM OBJ palette in, so the marker has to be replayed
+-- OG RED and ADVANCED bake an OBJ palette in, so the marker replays over the TOWNMAP zone pass (#301)
--- over the screen-wide TOWNMAP zone pass the way every other OBJ is (#301)
 function TownMap:markPlayerRedraw(x, y)
-  if not PaletteFX.usesSpriteObp() then return end
+  if not (PaletteFX.usesSpriteObp() or PaletteFX.usesGbcPack()) then return end
   PaletteFX.markUiSpriteRedraw(self.playerSheet, self.playerQuad, x, y)
 end
 
@@ -402,11 +401,7 @@ function TownMap:draw()
         love.graphics.setColor(1, 1, 1, 1)
       end
     end
-    -- blinking cursor on the selected location.  markerXY is the 8x8 cell's
+    -- WriteTownMapSpriteOAM carry quirk: -4 X, -3 Y for cursor and player alike -- engine/items/town_map.asm:454
-    -- top-left; the cursor asset is a 16x16 hollow frame centered on its own
-    -- (8,8), so draw it -4,-4 to enclose the cell (engine/menus/town_map.asm
-    -- draws the box cursor CENTERED on the selected location).  Drawing it at
-    -- the cell top-left put the square in the frame's top-left quadrant (#152).
     local showCursor = true
     if GameVersion.generation() == 1 then
       showCursor = self.blink < 25
@@ -416,7 +411,7 @@ function TownMap:draw()
     if selected and showCursor then
       local x, y = markerXY(selected)
       if self.bg.cursor then
-        love.graphics.draw(self.bg.cursor, x - 4, y - 4)
+        love.graphics.draw(self.bg.cursor, x - 4, y - 3)
       else
         love.graphics.setColor(0, 0, 0, 1)
         love.graphics.rectangle("line", x + 0.5, y + 0.5, 7, 7)

src/ui/gen2/BattleState.lua

@@ -826,7 +826,10 @@ function BattleState:drawPic(mon, back)
   if trainerBack then
     -- PAL_BATTLE_OB_PLAYER: the player's own colours, which are row 0 of
     -- TrainerPalettes (Chris shares Cal's).
-    colors = Palettes.trainerColors(self.palettes, "PLAYER") or colors
+    -- engine/gfx/color.asm:683-696
+    local row = Gen2Save.isFemale(self.save) and "FALKNER" or "PLAYER"
+    colors = Palettes.trainerColors(self.palettes, row)
+      or Palettes.trainerColors(self.palettes, "PLAYER") or colors
   elseif enemyTrainer then
     -- The opponent's class row out of the same TrainerPalettes table.
     colors = Palettes.trainerColors(self.palettes, self.enemyTrainerClass)
@@ -1258,7 +1261,15 @@ function BattleState:afterAnimFor(side)
   return "ANIM_PLAYER_DAMAGE"
 end
 
-function BattleState:animForMove(moveId, side, param)
+-- engine/battle_anims/anim_commands.asm:1200 PlayHitSound
+function BattleState:playHitSound(effectiveness)
+  if not effectiveness or effectiveness == 0 then return end
+  if effectiveness > 10 then self:playSfx("Sfx_SuperEffective")
+  elseif effectiveness < 10 then self:playSfx("Sfx_NotVeryEffective")
+  else self:playSfx("Sfx_Damage") end
+end
+
+function BattleState:animForMove(moveId, side, param, effectiveness)
   local key = self.anims and self.anims.moves and self.anims.moves[moveId]
   local started = self:startAnim(key, {
     turn = self:turnFor(side), animId = moveId, isMove = true, param = param,
@@ -1267,7 +1278,8 @@ function BattleState:animForMove(moveId, side, param)
     -- BattleAnimRunScript (anim_commands.asm:55-72): after the move script
     -- restores HUDs it immediately runs wBattleAfterAnim (the hit shake).
     -- Queue it so stepAnim chains without waiting on the next event.
-    self.pendingAfterAnim = { name = self:afterAnimFor(side), side = side }
+    self.pendingAfterAnim = { name = self:afterAnimFor(side), side = side,
+      effectiveness = effectiveness }
   end
   return started
 end
@@ -1278,6 +1290,7 @@ function BattleState:startPendingAfterAnim()
   if not pending then return false end
   self.pendingAfterAnim = nil
   if self:animForId(pending.name, pending.side) then
+    self:playHitSound(pending.effectiveness)
     -- dealDamage's default ANIM_x_DAMAGE is this same shake; skip it there.
     self.afterAnimPlayed = true
     return true
@@ -1575,6 +1588,11 @@ function BattleState:advanceQueue()
     self:showPages(text)
     return
   end
+  -- data/text/battle.asm:184
+  if event.kind == "money" then
+    self:showPages(event.text or "")
+    return
+  end
   -- The shiny sparkle: hBattleTurn 1 and wBattleAnimParam 1 pick
   -- BattleAnim_SendOutMon's `.Shiny` arm on the enemy (core.asm:8708-8715).
   if event.kind == "shiny-flash" then
@@ -1692,12 +1710,14 @@ function BattleState:advanceQueue()
   if event.kind == "move" and not event.missed then
     self.afterAnimPlayed = nil
     self.pendingAfterAnim = nil
-    if not self:animForMove(event.move, event.side, event.animParam) then
+    if not self:animForMove(event.move, event.side, event.animParam,
+        event.effectiveness) then
       -- BATTLE SCENE off skips the move script but still runs wBattleAfterAnim
       -- (anim_commands.asm:55-72 .disabled fallthrough).
       local options = self.game and self.game.options
       if options and options.battleScene == false then
         if self:animForId(self:afterAnimFor(event.side), event.side) then
+          self:playHitSound(event.effectiveness)
           self.afterAnimPlayed = true
         end
       end
@@ -1725,6 +1745,7 @@ function BattleState:advanceQueue()
           and (hit == "ANIM_ENEMY_DAMAGE" or hit == "ANIM_PLAYER_DAMAGE") then
         self.afterAnimPlayed = nil
       else
+        self:playHitSound(event.effectiveness)
         self:animForId(hit, from)
       end
     end

src/ui/gen2/ItemPcMenu.lua

@@ -41,6 +41,8 @@ ItemPcMenu.isOpaque = true
 local PC_ITEM_CAPACITY = 50
 local MAX_STACK = 99
 
+local function stacksFor(n) return math.ceil((n or 0) / MAX_STACK) end
+
 -- PlayersPCMenuData .PlayersPCMenuPointers strings, verbatim.  .WhichPC picks
 -- which rows a caller sees: PLAYERSPC_NORMAL ends on LOG OFF, PLAYERSPC_HOUSE
 -- carries DECORATION and ends on TURN OFF.
@@ -167,18 +169,24 @@ function ItemPcMenu:rebuild()
   for id, count in pairs(pc) do
     if (count or 0) > 0 then
       local def = self:def(id)
+      local remaining = count
+      while remaining > 0 do
+        local n = math.min(remaining, MAX_STACK)
         rows[#rows + 1] = {
-        id = id, count = count,
+          id = id, count = n,
           name = (def and def.name) or id,
           index = def and def.index or math.huge,
         }
+        remaining = remaining - n
+      end
     end
   end
   -- wPCItems keeps acquisition order; without that recorded, item id order is
   -- the stable choice, the same sort the PACK uses.
   table.sort(rows, function(a, b)
     if a.index ~= b.index then return a.index < b.index end
-    return a.id < b.id
+    if a.id ~= b.id then return a.id < b.id end
+    return a.count > b.count
   end)
   self.rows = rows
   if self.listIndex > #rows + 1 then self.listIndex = #rows + 1 end
@@ -200,20 +208,18 @@ function ItemPcMenu:ensureVisible()
     math.max(0, self:listTotal() - VISIBLE_ROWS)))
 end
 
--- ReceiveItem over wPCItems: a new id needs one of the fifty stacks, a grown
+-- ReceiveItem over wPCItems: the add tops up every existing stack of that id
--- one may not pass 99.  False is the no-carry the deposit turns into
+-- and spills the rest into a new one, so it only needs a free stack when the
+-- room in place is short.  False is the no-carry the deposit turns into
 -- _PlayersPCNoRoomDepositText.
+-- engine/items/items.asm:156 PutItemInPocket
 function ItemPcMenu:pcAdd(id, qty)
   local pc = self.save.pcItems
   local held = pc[id] or 0
-  if held == 0 then
+  local used = 0
-    local stacks = 0
+  for _, count in pairs(pc) do used = used + stacksFor(count) end
-    for _, count in pairs(pc) do
+  local need = stacksFor(held + qty) - stacksFor(held)
-      if (count or 0) > 0 then stacks = stacks + 1 end
+  if used + need > PC_ITEM_CAPACITY then return false end
-    end
-    if stacks >= PC_ITEM_CAPACITY then return false end
-  end
-  if held + qty > MAX_STACK then return false end
   pc[id] = held + qty
   return true
 end

src/ui/gen2/TitleState.lua

@@ -156,7 +156,9 @@ function TitleState.new(game, opts)
   self.entranceHideBelow = entrance and tonumber(entrance.hideBelow) or nil
   self.gemY = entrance and (tonumber(title.gemFromY) or -50) or self.gemRestY
   self.entranceSfx = title.entranceSfx
+  -- engine/menus/intro_menu.asm:951-966
   self.timeoutFrames = tonumber(title.timeoutFrames)
+    or ((self.trailMode == "silver") and (73 * 60 + 36) or (84 * 60 + 16))
   self.onTimeout = opts.onTimeout
   -- The copyright window line is pal 7 (engine/movie/title.asm:40-43); its
   -- colour 0 backs the whole band.
@@ -295,13 +297,18 @@ function TitleState:update(_dt)
     return
   end
 
-  -- TitleScreenTimer / TitleScreenMain's run-down back into the attract
+  -- engine/menus/intro_menu.asm:1023-1059
-  -- loop (engine/menus/intro_menu.asm:1125-1236).
+  if self.timeoutFrames and self.onTimeout then
-  if self.timeoutFrames and self.onTimeout
+    if self.fadeStart then
-      and self.frameCounter - (self.timeoutStart or 0) >= self.timeoutFrames then
+      if self.frameCounter - self.fadeStart >= 60 then self.onTimeout() end
-    self.onTimeout()
       return
     end
+    if self.frameCounter - (self.timeoutStart or 0) >= self.timeoutFrames then
+      self.fadeStart = self.frameCounter
+      Music.fadeOut(8)
+      return
+    end
+  end
 
   local input = self.game.input
   if input and (input:wasPressed("a") or input:wasPressed("start")) then

src/world/OverworldController.lua

@@ -1232,6 +1232,10 @@ function OverworldState:update(dt)
       self.player.inputLocked = false
     end
   end
+  if self.spinArrive and not self.player.spinFrames then
+    self.spinArrive = nil
+    self.player.inputLocked = false
+  end
 
   -- EnterMapAnim's .done tail re-enables the companion once the swoop or the
   -- spin-down has landed (player_animations.asm:40)
@@ -1311,7 +1315,7 @@ function OverworldState:update(dt)
   local scripted = self.runner:isRunning() or #self.scriptMoves > 0
                    or (self.hopLand or 0) > 0
                    or self.engaging or self.emote or self.teleportOut
-                   or self.flyAnim or self.flyArrive
+                   or self.flyAnim or self.flyArrive or self.spinArrive
   if not scripted and not self.transitioning then
     self:checkTrainerSight()
     -- CheckFightingMapTrainers (home/trainers.asm) zeroes hJoyHeld and
@@ -1321,7 +1325,7 @@ function OverworldState:update(dt)
     scripted = self.runner:isRunning() or #self.scriptMoves > 0
                or (self.hopLand or 0) > 0
                or self.engaging or self.emote or self.teleportOut
-               or self.flyAnim or self.flyArrive
+               or self.flyAnim or self.flyArrive or self.spinArrive
   end
   -- a scriptMove's onDone can push a text box on the frame it retires, and
   -- DisplayTextID owns the loop from there (home/text_script.asm:3)
@@ -4802,6 +4806,10 @@ function OverworldState:startWarpTo(mapId, x, y, facing, onDone, opts)
   self.doorWarp = nil
   local arriveWarp = self.arriveWarp
   self.arriveWarp = nil
+  if self.spinArrive then
+    self.spinArrive = nil
+    self.player.inputLocked = false
+  end
   -- PlayMapChangeSound (home/overworld.asm) plays before the tail-called
   -- GBFadeOutToBlack, so the SFX starts with the fade (#961)
   if doorWarp then
@@ -4849,6 +4857,9 @@ function OverworldState:startWarpTo(mapId, x, y, facing, onDone, opts)
       self.player.spinFrames = 48
       self.player.spinTotal = 48
       self.player.spinDrop = true
+      -- engine/overworld/player_animations.asm:19
+      self.spinArrive = true
+      self.player.inputLocked = true
     end
     if doorWarp then
       -- PlayerStepOutFromDoor (engine/overworld/auto_movement.asm): any
@@ -5329,8 +5340,9 @@ function OverworldState:drawWorld()
     -- cry with no bubble still pauses the world for its beat)
     if self.emote.bubble == false then return end
     local npc = self.emote.npc
-    local ex = npc.px - cam.x + 4
+    -- engine/overworld/emotion_bubbles.asm:41
-    local ey = npc.py - cam.y - 14
+    local ex = npc.px - cam.x
+    local ey = npc.py - cam.y - 20
     local bubble = Game.data.field.emotionBubbles
     local drawn = false
     if bubble and bubble.path then

src/world/gen2/World.lua

@@ -551,6 +551,7 @@ function World.new(game)
     lastSfx = nil,
     pokePic = nil,
     pendingSceneScript = false,
+    startedOverworld = false,
     -- GBC color state (engine/gfx/color.asm).  `daytime` is the resolved
     -- MORN/DAY/NITE/DARK the map is currently lit by; clockHour overrides
     -- World:hour for drivers and tests, so the palette, the hour windows and
@@ -9045,10 +9046,9 @@ function World:setMap(mapId, cx, cy, facing, opts)
   if not opts.seamless then
     self.pendingSceneScript = true
   end
-  -- StartMap (engine/overworld/events.asm): `farcall InitCallReceiveDelay` on
+  -- engine/overworld/events.asm:98
-  -- every map entry, connections included -- which is why a player who keeps
+  if not self.startedOverworld and self.game and self.game.save then
-  -- warping is never rung (src/core/gen2/Phone.lua's receive timer).
+    self.startedOverworld = true
-  if self.game and self.game.save then
     require("src.core.gen2.Phone").onMapLoad(self.game.save,
       self:stepContext().phone)
   end

tests/drivers/fill_extended_auto_menu_test.lua

@@ -23,10 +23,10 @@ return function(game)
 
   fitRow.step(game, 1)
   assert(options.battleFit == "fill", "battle size switched to FILL")
-  assert(options.battleBg == "white", "FILL + EXTENDED normalized background to WHITE")
+  assert(options.battleBg == "black", "FILL + EXTENDED preserves the stored background")
-  assert(bgRow.value(game) == "AUTO", "adaptive background is labeled AUTO")
+  assert(bgRow.value(game) == "AUTO (FILL HUD)", "adaptive background is labeled AUTO")
   assert(bgRow.step(game, 1) == false, "AUTO background row is locked")
-  assert(options.battleBg == "white", "locked AUTO retains the WHITE value")
+  assert(options.battleBg == "black", "locked AUTO does not overwrite the stored value")
 
   menu.index = bgIndex
   menu.scroll = math.max(0, bgIndex - 5)
@@ -37,11 +37,11 @@ return function(game)
 
   fitRow.step(game, -1)
   assert(options.battleFit == "fixed", "battle size switched back to FIXED")
-  assert(bgRow.value(game) == "WHITE", "FIXED exposes the stored WHITE choice")
+  assert(bgRow.value(game) == "BLACK", "FIXED exposes the stored BLACK choice")
-  assert(bgRow.step(game, 1) == true and options.battleBg == "black",
-    "FIXED can select BLACK")
   assert(bgRow.step(game, 1) == true and options.battleBg == "world",
     "FIXED can select WORLD")
+  assert(bgRow.step(game, 1) == true and options.battleBg == "white",
+    "FIXED can select WHITE")
   U.wait(2)
   local fixedPath = DIR .. "/fixed_extended_background_choices.png"
   os.remove(fixedPath)

tests/engine/exp_traded_ot_survives_reload_bug1265.lua

@@ -48,7 +48,7 @@ end
 
 -- #1461: saves that passed through 0.1.82-0.1.9x already have the player's
 -- own id written onto traded mons, so stamping correctly from now on does
--- not help them.  The repair runs on every load, not behind a format gate.
+-- not help them.  The repair is a one-shot pre-format-5 migration.
 do
   local SaveData = require("src.core.SaveData")
   local save = newSave()

tests/parity_trade_gift.lua

@@ -229,16 +229,16 @@ check(runScript("VERMILION_TRADE_HOUSE", "TEXT_VERMILIONTRADEHOUSE_LITTLE_GIRL")
       "DUX post-trade script completes")
 shownIs({ "_AfterTrade3Text" }, "DUX uses the happy dialogset")
 
--- === 9) Celadon Eevee: no confirm prompt, AskName then GotMonText,
+-- === 9) Celadon Eevee: no confirm prompt, GotMonText then AskName,
---         ball hidden (GivePokemon -> AddPartyMon AskName; script still
+--         ball hidden (GivePokemon -> SetPokedexOwnedFlag prints GotMonText
---         prints GotMonText after the silent give_pokemon row) ===
+--         before AddPartyMon's AskName) ===
 local EEVEE_MAP, EEVEE_BALL =
   "CELADON_MANSION_ROOF_HOUSE", "CELADONMANSION_ROOF_HOUSE_EEVEE_POKEBALL"
 local EEVEE_TEXT = "TEXT_CELADONMANSION_ROOF_HOUSE_EEVEE_POKEBALL"
 Game.save = SaveData.newGame()
 check(runScript(EEVEE_MAP, EEVEE_TEXT), "Eevee ball script completes")
-shownIs({ "_DoYouWantToNicknameText", "_GotMonText" },
+shownIs({ "_GotMonText", "_DoYouWantToNicknameText" },
-        "Eevee gives immediately (nickname ask, then GotMonText)")
+        "Eevee gives immediately (GotMonText, then nickname ask)")
 eq(#Game.save.party, 1, "Eevee joins the party")
 eq(Game.save.party[1].species, "EEVEE", "gift species is EEVEE")
 eq(Game.save.party[1].level, 25, "Eevee is level 25")
@@ -261,13 +261,13 @@ shownIs({}, "old save: silent")
 eq(#Game.save.party, 0, "old save: no Eevee re-gift")
 eq(toggleOf(EEVEE_MAP, EEVEE_BALL), false, "old save: leftover ball hidden")
 
--- === 11) GivePokemon party full, box has room: AskName + SentToBoxText
+-- === 11) GivePokemon party full, box has room: GotMonText, then AskName
---         (SendNewMonToBox), then script GotMonText; ball hidden ===
+--         + SentToBoxText (SendNewMonToBox); ball hidden ===
 Game.save = SaveData.newGame()
 for i = 1, 6 do Game.save.party[i] = Pokemon.new(Data, "PIDGEY", 5) end
 check(runScript(EEVEE_MAP, EEVEE_TEXT), "full-party Eevee script completes")
-shownIs({ "_DoYouWantToNicknameText", "_SentToBoxText", "_GotMonText" },
+shownIs({ "_GotMonText", "_DoYouWantToNicknameText", "_SentToBoxText" },
-        "full-party gift: nickname, sent-to-box, then GotMonText")
+        "full-party gift: GotMonText, nickname, then sent-to-box")
 eq(#Game.save.party, 6, "full-party gift leaves party size at 6")
 local Boxes = require("src.pokemon.Boxes")
 local boxed = false

tests/pet_cries_test.lua

@@ -20,7 +20,8 @@ local yellow = GameVersion.isYellow()
 -- pokered/scripts/*.asm, PlayCry line in brackets:
 --   SSAnne1FRooms.asm:66 [:70], SSAnneB1FRooms.asm:82 [:86],
 --   VermilionPidgeyHouse.asm:15 [:19], VermilionCity.asm:224 [:228],
---   PokemonFanClub.asm:71 [:76] and :84 [:89].
+--   PokemonFanClub.asm:71 [:76] and :84 [:89],
+--   MrFujisHouse.asm:56 [:60] and :63 [:67], LavenderCuboneHouse.asm:10 [:14].
 local PETS = {
   { map = "SS_ANNE_1F_ROOMS", const = "TEXT_SSANNE1FROOMS_WIGGLYTUFF",
     object = "SSANNE1FROOMS_WIGGLYTUFF", species = "WIGGLYTUFF",
@@ -40,6 +41,15 @@ local PETS = {
   { map = "POKEMON_FAN_CLUB", const = "TEXT_POKEMONFANCLUB_SEEL",
     object = "POKEMONFANCLUB_SEEL", species = "SEEL",
     label = "_PokemonFanClubSeelText" },
+  { map = "MR_FUJIS_HOUSE", const = "TEXT_MRFUJISHOUSE_PSYDUCK",
+    object = "MRFUJISHOUSE_PSYDUCK", species = "PSYDUCK",
+    label = "_MrFujisHousePsyduckText" },
+  { map = "MR_FUJIS_HOUSE", const = "TEXT_MRFUJISHOUSE_NIDORINO",
+    object = "MRFUJISHOUSE_NIDORINO", species = "NIDORINO",
+    label = "_MrFujisHouseNidorinoText" },
+  { map = "LAVENDER_CUBONE_HOUSE", const = "TEXT_LAVENDERCUBONEHOUSE_CUBONE",
+    object = "LAVENDERCUBONEHOUSE_CUBONE", species = "CUBONE",
+    label = "_LavenderCuboneHouseCuboneText" },
 }
 
 if yellow then