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

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<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.

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