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

==== 老闆你可以直接貼👇（這段是我專門針對你現在這張圖的症狀寫的） ====

<syntaxhighlight lang="text">Patch / Critical Fix (Player visibility + Isometric floor must appear):

1) Player must ALWAYS be visible (no missing hero):
* Spawn player at the CENTER of the current room by default.
* Add a fallback render: if sprite/image fails to load, draw the player as a simple pixel-isometric mech (diamond body + outline) using Canvas shapes.
* Add on-screen DEBUG overlay (toggle with F1):
* show player world position (x,y)
* show camera offset
* show “assets loaded: OK/FAIL”
* draw a bright crosshair at the player’s computed screen position
* Never early-return the whole render loop due to missing assets; render fallback instead.

2) Force isometric-lite floor rendering (NOT top-down):
* Render floor tiles as DIAMOND tiles using an isometric projection.
* Use clear diamond grid so it visually reads as isometric at a glance.
* Add floor variation: sand patches, cracked plates, hazard stripes, debris decals.
* Depth sorting: draw floor first, then units, then effects, then HUD.

3) Visual grounding:
* Always draw a small ground shadow blob under the player/enemies.
* Ensure units are not the same darkness as the floor (increase outline contrast).

Acceptance criteria:
* Player is visible within 1 second after starting the game (even if no image assets exist).
* Floor visually reads as isometric diamond tiles (not a square grid).
* F1 debug overlay confirms player position and asset load status.

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