Add openable doors to generated rooms

src/engine/world/generator.ts

@@ -57,8 +57,19 @@ export function generateWorld(floor: number, runState: RunState): { world: World
   };
 
   placeEnemies(floor, rooms, actors, random);
+  
+  // Place doors for dungeon levels (Uniform/Digger)
+  // Caves (Floors 10+) shouldn't have manufactured doors
+  if (floor <= 9) {
+    placeDoors(width, height, tiles, rooms, random);
+  }
+
   decorate(width, height, tiles, random, exit);
   
+  // CRITICAL FIX: Ensure player start position is always clear!
+  // Otherwise spawning in Grass (which blocks vision) makes the player blind.
+  tiles[playerY * width + playerX] = TileType.EMPTY;
+  
   return { 
     world: { width, height, tiles, actors, exit }, 
     playerId 
@@ -347,3 +358,40 @@ function placeEnemies(floor: number, rooms: Room[], actors: Map<EntityId, Actor>
 
 
 export const makeTestWorld = generateWorld;
+
+function placeDoors(width: number, height: number, tiles: Tile[], rooms: Room[], random: () => number): void {
+  const checkAndPlaceDoor = (x: number, y: number) => {
+    const i = idx({ width, height } as any, x, y);
+    if (tiles[i] === TileType.EMPTY) {
+      // Found a connection (floor tile on perimeter)
+      
+      // 50% chance to place a door
+      if (random() < 0.5) {
+        // 90% chance for closed door, 10% for open
+        tiles[i] = random() < 0.9 ? TileType.DOOR_CLOSED : TileType.DOOR_OPEN;
+      }
+    }
+  };
+
+  for (const room of rooms) {
+    // Scan top and bottom walls
+    const topY = room.y - 1;
+    const bottomY = room.y + room.height;
+    
+    // Scan horizontal perimeters (iterate x from left-1 to right+1 to cover corners too if needed, 
+    // but usually doors are in the middle segments. Let's cover the full range adjacent to room.)
+    for (let x = room.x; x < room.x + room.width; x++) {
+      if (topY >= 0) checkAndPlaceDoor(x, topY);
+      if (bottomY < height) checkAndPlaceDoor(x, bottomY);
+    }
+
+    // Scan left and right walls
+    const leftX = room.x - 1;
+    const rightX = room.x + room.width;
+    
+    for (let y = room.y; y < room.y + room.height; y++) {
+      if (leftX >= 0) checkAndPlaceDoor(leftX, y);
+      if (rightX < width) checkAndPlaceDoor(rightX, y);
+    }
+  }
+}