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

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<syntaxhighlight lang="text">Patch / Core Systems Fix (Room navigation + Linking + Weapon Switch + Visual Tiles)

A) Room exits + linking must work
* Each room has up to 4 exits: Up, Down, Left, Right.
* Maintain a room graph/grid: currentRoom = (rx, ry). Neighbor rooms exist if graph says so.
* When player reaches an exit trigger zone, transition to the linked room:
* currentRoom changes to neighbor coords
* room content regenerates (enemies/reward) based on room seed
* player spawns near the opposite entrance in the new room (so it feels continuous)
* IMPORTANT: This must work in isometric projection:
* Define exit trigger zones in WORLD coordinates (room-local x,y bounds), not screen coords.
* Example: if room bounds are [-W/2..W/2, -H/2..H/2], then:
    RightExitZone: x > W/2 - margin
    LeftExitZone:  x < -W/2 + margin
    UpExitZone:    y < -H/2 + margin
    DownExitZone:  y > H/2 - margin

Debug overlay (toggle F1):
* Show current room coords (rx, ry)
* Show which exits exist (U/D/L/R)
* Show player world pos (x,y)
* Show when exit trigger is entered (print “ENTER EXIT: RIGHT” etc.)

Acceptance criteria for A:
* Player can reliably transition rooms via at least one exit within 10 seconds of walking into it.
* F1 overlay confirms exit triggers firing and room coords updating.

B) Navigation guidance (make exits obvious)
* Add clear door/exit indicators on the edges of the isometric diamond:
* hazard chevrons / neon strip / animated arrow + small “EXIT” label
* only show indicators for exits that actually exist in this room
* Add a simple minimap:
* show visited rooms as small squares/diamonds
* highlight current room
* optionally show available exits from current room

Acceptance criteria for B:
* Player can immediately see where exits are without guessing.

C) Weapon switching (Q/E) + weapon system
* Implement weapon inventory with at least 3 weapons:
  1) Rifle: fast, low damage
  2) Shotgun: spread, close-range burst
  3) Missile: slow fire, high damage, small splash
* Q/E cycles weapons: activeWeaponIndex = (activeWeaponIndex ± 1) mod inventory.length
* HUD must display:
* current weapon name
* ammo or cooldown (if infinite ammo, show heat/cooldown)
* Each weapon has distinct projectile behavior and fire rate.
* Ensure switching works even if player has no sprite assets (logic only).

Acceptance criteria for C:
* Pressing Q/E changes weapon; shooting behavior clearly differs by weapon; HUD updates instantly.

D) Visual tiles / decals (reduce “blocky placeholder” feel)
* Keep current isometric floor but upgrade visuals:
* Replace plain blocks with a small tile palette (3~5 variants) + decals layer
* Add rust plates, sand stains, cracks, hazard stripes, debris
* Use weighted randomness per room so the floor feels varied but coherent.
* Keep pixel style crisp (nearest-neighbor). Avoid blur/glow.

Acceptance criteria for D:
* Floor reads as industrial ruin (not uniform grid). Variation visible in the first room.

Do not change:
* isometric-lite camera style
* core roguelite room loop
* hard-boiled mercenary theme (minimal text)

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