Keep WIDE battle visible beneath opaque menus

tests/drivers/fixed_extended_world_bag_overlay_test.lua

@@ -0,0 +1,44 @@
+-- Visual regression coverage for Professor Oak's scripted Yellow capture Bag
+-- over the WIDE + FIXED + EXTENDED + WORLD composition.
+return function(game)
+  local U = dofile("tests/drivers/util.lua")
+  local DIR = os.getenv("SHOT_DIR") or "/tmp/shots"
+  local BattleState = require("src.battle.BattleState")
+  local Pokemon = require("src.pokemon.Pokemon")
+
+  love.window.setMode(2048, 1152, { resizable = true })
+  U.wait(3)
+
+  local options = game.save.options
+  options.battleLayout = "wide"
+  options.battleFit = "fixed"
+  options.battleHud = "extended"
+  options.battleBg = "world"
+
+  game.save.party = { Pokemon.new(game.data, "PIKACHU", 20) }
+  U.teleport(game, "ROUTE_1", 5, 5, "down")
+  U.wait(30)
+
+  local demo = BattleState.newWild(game, "CHARMANDER", 5)
+  demo:makeOldManDemo("PROF.OAK")
+  demo.onFinish = function() end
+  game.overworld:pushBattle(demo)
+
+  for _ = 1, 100 do
+    if demo.phase == "menu" and (demo.demoTimer or 0) > 5 then break end
+    U.tap(game, "a")
+    U.wait(4)
+  end
+  for _ = 1, 180 do
+    if game.stack:top() ~= demo then break end
+    U.wait(1)
+  end
+  U.wait(3)
+
+  local path = DIR .. "/fixed_extended_world_oak_charmander_bag.png"
+  os.remove(path)
+  local ok = game.stack:top() ~= demo and U.shot(game, path)
+  U.log(ok and "FIXED_EXTENDED_WORLD_BAG_PASS"
+           or "FIXED_EXTENDED_WORLD_BAG_FAIL")
+  love.event.quit(ok and 0 or 1)
+end

tests/engine/battle_fixed_menu_scale.lua

@@ -92,6 +92,11 @@ local menu = { isOpaque = true } -- PartyMenu / ListMenu
 local whiteBattle = setmetatable(
   { game = { save = { options = { battleBg = "white" } } } },
   { __index = BattleState })
+local wideWhiteBattle = setmetatable(
+  { game = { save = { options = {
+      battleBg = "white", battleLayout = "wide",
+  } } } },
+  { __index = BattleState })
 local function stack(...) return { states = { ... },
   visibleBase = function(self)
     for i = #self.states, 1, -1 do
@@ -111,7 +116,10 @@ T.eq(s2:visibleBase(), 1, "the battle alone already drew from the overworld")
 T.eq(Game.drawBaseInStack(s2, s2:visibleBase()), 1, "and still does")
 local s3 = stack(overworld, whiteBattle, menu)
 T.eq(Game.drawBaseInStack(s3, s3:visibleBase()), 3,
-  "a white-bg battle has no map to hold, so nothing moves")
+  "a classic white-bg battle has no presentation to hold, so nothing moves")
+local s3wide = stack(overworld, wideWhiteBattle, menu)
+T.eq(Game.drawBaseInStack(s3wide, s3wide:visibleBase()), 2,
+  "an opaque WIDE battle still draws beneath its classic menu")
 local s4 = stack(overworld, menu)
 T.eq(Game.drawBaseInStack(s4, s4:visibleBase()), 2,
   "and a menu outside a battle is untouched")