Editing Openai/694f5245-1110-800b-b182-7c2accd50046 (section)

=== Assistant: 老闆這張我超滿意🤣🔥 ===
老闆這張我超滿意🤣🔥
因為它證明三件事已經穩了：(1) 角色資產載入成功、(2) isometric-lite 的地板語法穩、(3) 角色錨點跟陰影也有。
剩下的都是「下一包 Patch」該做的精準修正，而且你抓到的 bug 點都很對👇

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✅ 你猜得很準：八成是 exit 觸發區域的座標系仍用 top-down 或 screen coords，轉 isometric 後位置/範圍全錯。
所以要逼它：
* 觸發區域用 WORLD (room-local x,y) bounds
* 邊界 margin 加大（先做大、驗證能進，再縮小）

另外「沒有方向導引」就順便：
* 只有該方向真的有鄰房，才畫 EXIT 指示（不畫假門）

===== 這是經典：spriteFlip 的判斷跟 “aimX / mouseX” 在投影後搞混。 =====
最穩的做法是：
* 不管 isometric 投影，朝向判斷一律看 playerWorldX vs aimWorldX
* 或看「輸入的 moveX」：moveX < 0 → faceLeft

===== 這是 chroma key threshold 太兇，把機甲的白/灰高光一起當背景切掉了😂 =====
要修的關鍵是：
* 用「近黑去背」而不是「近白去背」
* 或改成只對特定 key color（例如 #00FF00）去背
* 加一個 threshold slider/常數（先保守：小一點）

你這張看起來像：把亮部/白色也被判透明 → 所以剩下深色線條，看起來像玻璃。🧊

==== 你就貼這段，這包會把你目前卡住的都打通： ====

<syntaxhighlight lang="text">PATCH 2 / Room Exits + Navigation + Facing + Chroma-Key Fix (Isometric)

A) Room exits MUST work (after isometric change)
* Define room world bounds (room-local coordinates), e.g.:
  roomHalfW = 220; roomHalfH = 160;  // example, tune as needed
* Exit trigger zones MUST be checked in WORLD coords (not screen coords):
  RightExit: player.x >  roomHalfW - exitMargin
  LeftExit:  player.x < -roomHalfW + exitMargin
  UpExit:    player.y < -roomHalfH + exitMargin
  DownExit:  player.y >  roomHalfH - exitMargin
* Set exitMargin LARGE for testing first (e.g. 30~50). Once verified, reduce later.
* When triggered, transition to the linked neighbor room and respawn player near opposite entrance.

Add F1 debug overlay:
* show player world x,y
* show room bounds and exitMargin
* show which exit is being triggered (“TRIGGER: RIGHT”)
* show current room coords (rx, ry)

B) Navigation guidance (make exits obvious)
* Only show exit indicators where a neighbor room exists.
* Place animated hazard chevrons/arrow strips on the corresponding edge of the isometric diamond.
* Add a simple minimap showing current room and available exits.

C) Fix facing / left-right flipping
* Facing must be decided in WORLD space:
  if (aimWorldX < player.x) faceLeft else faceRight
  (or if using movement: moveX < 0 => faceLeft, moveX > 0 => faceRight)
* Do NOT use screenX/mouseX directly for facing in isometric mode.

D) Fix “crystal mech” (chroma-key too aggressive)
* Make chroma-key removal conservative:
* Prefer removing near-black only (background), NOT near-white.
* Use a small threshold (e.g. <= 25) for black key.
* If the asset already has alpha, DO NOT apply chroma-key at all.
* Add a toggle constant: USE_CHROMA_KEY = true/false for quick testing.

Acceptance criteria:
* Player can transition to at least one neighboring room reliably within 5 seconds by walking to an exit edge.
* Exit indicators clearly show where to go.
* Facing direction matches aim (aim left => face left).
* Player sprite no longer looks transparent/glassy; white armor remains opaque.

</syntaxhighlight>

==== 因為你現在最需要的是「循環」先跑起來。 ====
一旦能進房間，門再微調都簡單；不能進，後面全卡住😈

如果你願意，我也可以幫你把「isometric 房間邊界」做成更像真房間的形狀（菱形輪廓＋內縮牆面＋角落遮擋），但那是 Patch 3（美術/氛圍）再做會比較順。

老闆先把 Patch 2 丟過去，我賭 9 成你下一張截圖就會是：有 EXIT 指示、能進下一房、Q/E 切槍爽感開始發生🔥