Avoid plate 'on' sprite bleeding under box

Detect when a push-box sits on an active pressure plate and use the plate's inactive sprite to prevent the plate's border pixels from bleeding through the box's transparent edges. Adds an optional resetPushBoxesForRoom method to the GameState API and calls it when the player exits a room to reset push-box state for the current room before updating the player's position.

Author: andredarcie

src/runtime/adapters/renderer/RendererEntityRenderer.ts

@@ -145,7 +145,12 @@ class RendererEntityRenderer {
                 const isActive = object.variableId
                     ? this.gameState.isVariableOn?.(object.variableId) ?? false
                     : Boolean(object.activated);
-                sprite = (isActive ? objectSprites[`${object.type}--on`] : objectSprites[object.type]) || sprite;
+                // A push-box at the same tile covers the plate — use inactive sprite so the
+                // plate's border pixels don't bleed through the box's transparent edges.
+                const boxOnPlate = isActive && objects.some(
+                    (o) => o.type === OT.PUSH_BOX && o.roomIndex === object.roomIndex && o.x === object.x && o.y === object.y
+                );
+                sprite = (isActive && !boxOnPlate ? objectSprites[`${object.type}--on`] : objectSprites[object.type]) || sprite;
             }
             if (object.type === OT.TRAP) {
                 const isActive = object.variableId

src/runtime/services/engine/InteractionManager.ts

@@ -96,6 +96,7 @@ type GameStateApi = {
   showPickupOverlay?: (payload: Record<string, unknown>) => void;
   setPlayerPosition: (x: number, y: number, roomIndex: number | null) => void;
   getRoomIndex: (row: number, col: number) => number | null;
+  resetPushBoxesForRoom?: (roomIndex: number) => void;
 };
 
 type Options = {
@@ -499,6 +500,7 @@ class InteractionManager {
       if (!sameTile) continue;
 
       if (rooms[exit.targetRoomIndex]) {
+        this.gameState.resetPushBoxesForRoom?.(player.roomIndex);
         this.gameState.setPlayerPosition(
           this.clamp(exit.targetX, 0, 7),
           this.clamp(exit.targetY, 0, 7),