/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Door class
var Door = Container.expand(function () {
	var self = Container.call(this);
	self.locked = true;
	self.doorAsset = self.attachAsset('door_locked', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.unlock = function () {
		self.locked = false;
		self.doorAsset.destroy();
		self.doorAsset = self.attachAsset('door_unlocked', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	return self;
});
// Enemy (ghost) class
var Ghost = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('ghost', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4.4;
	self.dirX = 0;
	self.dirY = 0;
	self.changeDirCooldown = 0;
	// Helper to pick a new random direction (including diagonals, but not standing still)
	function pickRandomDirection() {
		var dirs = [{
			x: 1,
			y: 0
		},
		// right
		{
			x: -1,
			y: 0
		},
		// left
		{
			x: 0,
			y: 1
		},
		// down
		{
			x: 0,
			y: -1
		},
		// up
		{
			x: 1,
			y: 1
		},
		// down-right
		{
			x: -1,
			y: 1
		},
		// down-left
		{
			x: 1,
			y: -1
		},
		// up-right
		{
			x: -1,
			y: -1
		} // up-left
		];
		var idx = Math.floor(Math.random() * dirs.length);
		self.dirX = dirs[idx].x;
		self.dirY = dirs[idx].y;
	}
	pickRandomDirection();
	self.changeDirCooldown = 60 + Math.floor(Math.random() * 60); // 1-2 seconds
	self.update = function () {
		// Save last position for possible collision logic
		if (typeof self.lastX === "undefined") self.lastX = self.x;
		if (typeof self.lastY === "undefined") self.lastY = self.y;
		// If player exists, chase the player
		if (typeof player !== "undefined" && player) {
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 0) {
				// Normalize direction
				var nx = dx / dist;
				var ny = dy / dist;
				// Move towards player
				self.x += self.speed * nx;
				self.y += self.speed * ny;
			}
		} else {
			// Fallback: random movement if no player
			self.x += self.speed * self.dirX;
			self.y += self.speed * self.dirY;
		}
		// Stay inside game area (bounce if hit edge)
		var bounced = false;
		if (self.x < 120) {
			self.x = 120;
			bounced = true;
		}
		if (self.x > 2048 - 120) {
			self.x = 2048 - 120;
			bounced = true;
		}
		if (self.y < 120) {
			self.y = 120;
			bounced = true;
		}
		if (self.y > 2732 - 120) {
			self.y = 2732 - 120;
			bounced = true;
		}
		// (No random direction change needed for chase mode)
		self.lastX = self.x;
		self.lastY = self.y;
	};
	return self;
});
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	self.asset = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.canMove = true;
	self.moveTo = function (x, y) {
		if (!self.canMove) return;
		// Clamp to game area
		var px = Math.max(60, Math.min(2048 - 60, x));
		var py = Math.max(60, Math.min(2732 - 60, y));
		self.x = px;
		self.y = py;
	};
	return self;
});
// Puzzle class
var Puzzle = Container.expand(function () {
	var self = Container.call(this);
	self.solved = false;
	self.attachAsset('puzzle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
// Wall class
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallAsset = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isSolid = true;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181818
});

/**** 
* Game Code
****/ 
// Enemy (ghost)
// Puzzle object
// Key
// Door (unlocked)
// Door (locked)
// Wall
// Player
// --- Game State ---
var currentFloor = 0; // 0: bottom, 1: 2nd, 2: 3rd, 3: 4th, 4: 5th, 5: top
var floors = [];
var player;
var dragPlayer = false;
var lastPlayerPos = {
	x: 0,
	y: 0
};
var keyObj = null;
var doorObj = null;
var puzzleObj = null;
var ghostObj = null;
var messageTxt = null;
var floorTxt = null;
var puzzleSolved = false;
var gameOver = false;
// --- Room/Floor Layouts ---
// Floor 0: Bottom floor (simple room, 1 puzzle, 1 ghost)
function createFloor0() {
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// Rectangle room
	// Door (top center)
	var door = new Door();
	door.x = 2048 / 2;
	door.y = 300;
	floor.doors.push(door);
	// Puzzle (center)
	var puzzle = new Puzzle();
	puzzle.x = 2048 / 2;
	puzzle.y = 2732 / 2;
	floor.puzzles.push(puzzle);
	// Ghost (bottom right)
	var ghost = new Ghost();
	ghost.x = 2048 - 500;
	ghost.y = 2732 - 700;
	floor.enemies.push(ghost);
	return floor;
}
// Floor 1: 2nd floor (L-shaped room, 1 puzzle, 1 ghost)
// Floor 5: Four rooms, each with different shape and size, combined together
var floor = {
	walls: [],
	doors: [],
	keys: [],
	puzzles: [],
	enemies: []
};
// --- Room 1: Large Rectangle (Top Left) ---
// Top wall
var wallR1Top = new Wall();
wallR1Top.x = 350;
wallR1Top.y = 200;
wallR1Top.width = 600;
wallR1Top.height = 60;
floor.walls.push(wallR1Top);
// Left wall
var wallR1Left = new Wall();
wallR1Left.x = 70;
wallR1Left.y = 500;
wallR1Left.width = 60;
wallR1Left.height = 600;
floor.walls.push(wallR1Left);
// Bottom wall
var wallR1Bottom = new Wall();
wallR1Bottom.x = 350;
wallR1Bottom.y = 800;
wallR1Bottom.width = 600;
wallR1Bottom.height = 60;
floor.walls.push(wallR1Bottom);
// Right wall (shared with Room 2, has a door)
// Shorten wall segments to leave a gap for the door at y=470
var wallR1RightA = new Wall();
wallR1RightA.x = 650;
wallR1RightA.y = 370; // move up
wallR1RightA.width = 60;
wallR1RightA.height = 120; // shorter, ends above the door
floor.walls.push(wallR1RightA);
var wallR1RightB = new Wall();
wallR1RightB.x = 650;
wallR1RightB.y = 730;
wallR1RightB.width = 60;
wallR1RightB.height = 200;
floor.walls.push(wallR1RightB);
// --- Room 2: Tall Rectangle (Top Right) ---
// Top wall
var wallR2Top = new Wall();
wallR2Top.x = 1200;
wallR2Top.y = 200;
wallR2Top.width = 600;
wallR2Top.height = 60;
floor.walls.push(wallR2Top);
// Right wall
var wallR2Right = new Wall();
wallR2Right.x = 1550;
wallR2Right.y = 600;
wallR2Right.width = 60;
wallR2Right.height = 800;
floor.walls.push(wallR2Right);
// Bottom wall (shared with Room 3, has a door)
// Shorten wall segments to leave a gap for the door at x=1200, y=1100
var wallR2BottomA = new Wall();
wallR2BottomA.x = 1075;
wallR2BottomA.y = 1000;
wallR2BottomA.width = 150;
wallR2BottomA.height = 60;
floor.walls.push(wallR2BottomA);
var wallR2BottomB = new Wall();
wallR2BottomB.x = 1575;
wallR2BottomB.y = 1000;
wallR2BottomB.width = 150;
wallR2BottomB.height = 60;
floor.walls.push(wallR2BottomB);
// Left wall (shared with Room 1, has a door)
var wallR2LeftA = new Wall();
wallR2LeftA.x = 850;
wallR2LeftA.y = 470;
wallR2LeftA.width = 60;
wallR2LeftA.height = 200;
floor.walls.push(wallR2LeftA);
var wallR2LeftB = new Wall();
wallR2LeftB.x = 850;
wallR2LeftB.y = 730;
wallR2LeftB.width = 60;
wallR2LeftB.height = 200;
floor.walls.push(wallR2LeftB);
// --- Room 3: Square (Bottom Right) ---
// Top wall (shared with Room 2, has a door)
var wallR3TopA = new Wall();
wallR3TopA.x = 1200;
wallR3TopA.y = 1200;
wallR3TopA.width = 250;
wallR3TopA.height = 60;
floor.walls.push(wallR3TopA);
var wallR3TopB = new Wall();
wallR3TopB.x = 1450;
wallR3TopB.y = 1200;
wallR3TopB.width = 250;
wallR3TopB.height = 60;
floor.walls.push(wallR3TopB);
// Right wall
var wallR3Right = new Wall();
wallR3Right.x = 1550;
wallR3Right.y = 1500;
wallR3Right.width = 60;
wallR3Right.height = 600;
floor.walls.push(wallR3Right);
// Bottom wall
var wallR3Bottom = new Wall();
wallR3Bottom.x = 1200;
wallR3Bottom.y = 1800;
wallR3Bottom.width = 600;
wallR3Bottom.height = 60;
floor.walls.push(wallR3Bottom);
// Left wall (shared with Room 4, has a door)
// Shorten wall segments to leave a gap for the door at y=1700
var wallR3LeftA = new Wall();
wallR3LeftA.x = 850;
wallR3LeftA.y = 1300;
wallR3LeftA.width = 60;
wallR3LeftA.height = 120;
floor.walls.push(wallR3LeftA);
var wallR3LeftB = new Wall();
wallR3LeftB.x = 850;
wallR3LeftB.y = 1820;
wallR3LeftB.width = 60;
wallR3LeftB.height = 120;
floor.walls.push(wallR3LeftB);
// --- Room 4: L-Shape (Bottom Left) ---
// Top wall
var wallR4Top = new Wall();
wallR4Top.x = 350;
wallR4Top.y = 1200;
wallR4Top.width = 600;
wallR4Top.height = 60;
floor.walls.push(wallR4Top);
// Left wall
var wallR4Left = new Wall();
wallR4Left.x = 70;
wallR4Left.y = 1500;
wallR4Left.width = 60;
wallR4Left.height = 600;
floor.walls.push(wallR4Left);
// Bottom wall
var wallR4Bottom = new Wall();
wallR4Bottom.x = 350;
wallR4Bottom.y = 1800;
wallR4Bottom.width = 600;
wallR4Bottom.height = 60;
floor.walls.push(wallR4Bottom);
// Right wall (shared with Room 3, has a door)
// Shorten wall segments to leave a gap for the door at y=1700
var wallR4RightA = new Wall();
wallR4RightA.x = 650;
wallR4RightA.y = 1300;
wallR4RightA.width = 60;
wallR4RightA.height = 120;
floor.walls.push(wallR4RightA);
var wallR4RightB = new Wall();
wallR4RightB.x = 650;
wallR4RightB.y = 1820;
wallR4RightB.width = 60;
wallR4RightB.height = 120;
floor.walls.push(wallR4RightB);
// --- Doors between rooms ---
// Door between Room 1 and Room 2 (top horizontal)
var door1 = new Door();
door1.x = 750;
door1.y = 470;
floor.doors.push(door1);
// Door between Room 2 and Room 3 (vertical)
var door2 = new Door();
door2.x = 1200;
door2.y = 1100;
floor.doors.push(door2);
// Door between Room 3 and Room 4 (bottom horizontal)
var door3 = new Door();
door3.x = 750;
door3.y = 1700;
floor.doors.push(door3);
// Door between Room 4 and Room 1 (vertical)
var door4 = new Door();
// Move door out of the wall: shift x to be just right of the wall (wall at x=70, wall thickness=60, room width=600, so wall edge at x=100, room starts at x=100, door at x=350 is center of wall, move to x=350+90=440)
door4.x = 350 + 90; // move further right of wall, so door is fully reachable
door4.y = 1000;
floor.doors.push(door4);
// Shorten bottom wall of Room 1 to leave a gap for the door at x=350, y=1000
// (wallR1Bottom is at y=800, so we need to adjust left wall of Room 4)
var wallR4LeftA = new Wall();
wallR4LeftA.x = 70;
wallR4LeftA.y = 1200;
wallR4LeftA.width = 60;
wallR4LeftA.height = 200;
floor.walls.push(wallR4LeftA);
var wallR4LeftB = new Wall();
wallR4LeftB.x = 70;
wallR4LeftB.y = 1500;
wallR4LeftB.width = 60;
wallR4LeftB.height = 600;
floor.walls.push(wallR4LeftB);
// --- Puzzle in Room 3 (bottom right) ---
var puzzle = new Puzzle();
puzzle.x = 1400;
puzzle.y = 1600;
floor.puzzles.push(puzzle);
// --- Ghost in Room 2 (top right) ---
var ghost = new Ghost();
ghost.x = 1300;
ghost.y = 600;
floor.enemies.push(ghost);
function createFloor1() {
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// L-shape: Top wall
	// Door (top right) - move door down to be reachable (not inside wall)
	var door = new Door();
	door.x = 2048 - 600;
	door.y = 400 + 60; // move door just below the top wall so it's reachable
	floor.doors.push(door);
	// Puzzle (bottom left)
	var puzzle = new Puzzle();
	puzzle.x = 500;
	puzzle.y = 2732 - 700;
	floor.puzzles.push(puzzle);
	// Ghost (center)
	var ghost = new Ghost();
	ghost.x = 1200;
	ghost.y = 1500;
	floor.enemies.push(ghost);
	return floor;
}
// Floor 2: 3rd floor (T-shaped, 1 puzzle, 1 ghost)
function createFloor2() {
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// T-shape: Top wall
	// Door (center top)
	var door = new Door();
	door.x = 2048 / 2;
	door.y = 400;
	floor.doors.push(door);
	// Puzzle (center bottom)
	var puzzle = new Puzzle();
	puzzle.x = 2048 / 2;
	puzzle.y = 2732 - 700;
	floor.puzzles.push(puzzle);
	// Ghost (center)
	var ghost = new Ghost();
	ghost.x = 2048 / 2;
	ghost.y = 1500;
	floor.enemies.push(ghost);
	return floor;
}
// Floor 3: 4th floor (U-shaped, 1 puzzle, 1 ghost)
function createFloor3() {
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// U-shape: Top wall
	// Door (top center)
	var door = new Door();
	door.x = 2048 / 2;
	door.y = 400;
	floor.doors.push(door);
	// Puzzle (center)
	var puzzle = new Puzzle();
	puzzle.x = 2048 / 2;
	puzzle.y = 1700;
	floor.puzzles.push(puzzle);
	// Ghost (bottom right)
	var ghost = new Ghost();
	ghost.x = 2048 - 600;
	ghost.y = 2732 - 700;
	floor.enemies.push(ghost);
	return floor;
}
// Floor 4: 5th floor (original floor 0, four rooms)
function createFloor4() {
	// Floor 5: Four rooms, each with different shape and size, combined together
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// --- Room 1: Large Rectangle (Top Left) ---
	// --- Doors between rooms ---
	// Only keep one main door for this floor
	var door = new Door();
	door.x = 350 + 90; // Use the previously moved door as the main door
	door.y = 1000;
	floor.doors.push(door);
	// Shorten bottom wall of Room 1 to leave a gap for the door at x=350, y=1000
	// (wallR1Bottom is at y=800, so we need to adjust left wall of Room 4)
	// --- Puzzle in Room 3 (bottom right) ---
	var puzzle = new Puzzle();
	puzzle.x = 1400;
	puzzle.y = 1600;
	floor.puzzles.push(puzzle);
	// --- Ghost in Room 2 (top right) ---
	var ghost = new Ghost();
	ghost.x = 1300;
	ghost.y = 600;
	floor.enemies.push(ghost);
	return floor;
}
// Floor 5: Top floor (original floor 1, exit)
function createFloor5() {
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// Walls (rectangle room)
	// Exit Door (top center, unlocked if puzzle solved)
	var door = new Door();
	door.x = 2048 / 2;
	door.y = 400;
	door.locked = false;
	door.doorAsset.destroy();
	door.doorAsset = door.attachAsset('door_unlocked', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	floor.doors.push(door);
	// Puzzle in the center of the room
	var puzzle = new Puzzle();
	puzzle.x = 2048 / 2;
	puzzle.y = 2732 / 2;
	floor.puzzles.push(puzzle);
	// Ghost (patrols horizontally)
	var ghost = new Ghost();
	ghost.x = 2048 / 2;
	ghost.y = 1200;
	floor.enemies.push(ghost);
	// Upstairs: 1 room, exit door (unlocked if puzzle solved), 1 ghost
	var floor = {
		walls: [],
		doors: [],
		keys: [],
		puzzles: [],
		enemies: []
	};
	// Walls (rectangle room)
	// Exit Door (top center, unlocked if puzzle solved)
	var door = new Door();
	door.x = 2048 / 2;
	door.y = 400;
	door.locked = false;
	door.doorAsset.destroy();
	door.doorAsset = door.attachAsset('door_unlocked', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	floor.doors.push(door);
	// Puzzle in the center of the room
	var puzzle = new Puzzle();
	puzzle.x = 2048 / 2;
	puzzle.y = 2732 / 2;
	floor.puzzles.push(puzzle);
	// Ghost (patrols horizontally)
	var ghost = new Ghost();
	ghost.x = 2048 / 2;
	ghost.y = 1200;
	floor.enemies.push(ghost);
	return floor;
}
// --- Helper Functions ---
function clearFloor() {
	// Remove all objects from game
	if (floors[currentFloor]) {
		var f = floors[currentFloor];
		for (var i = 0; i < f.walls.length; ++i) f.walls[i].destroy();
		for (var i = 0; i < f.doors.length; ++i) f.doors[i].destroy();
		for (var i = 0; i < f.keys.length; ++i) f.keys[i].destroy();
		for (var i = 0; i < f.puzzles.length; ++i) f.puzzles[i].destroy();
		for (var i = 0; i < f.enemies.length; ++i) f.enemies[i].destroy();
	}
	if (doorObj) {
		if (typeof doorObj.destroy === "function") {
			doorObj.destroy();
		}
		doorObj = null;
	}
	if (puzzleObj) {
		if (typeof puzzleObj.destroy === "function") {
			puzzleObj.destroy();
		}
		puzzleObj = null;
	}
	if (ghostObj) {
		ghostObj.destroy();
		ghostObj = null;
	}
}
function setupFloor(floorNum) {
	clearFloor();
	var f = floors[floorNum];
	// Add walls
	for (var i = 0; i < f.walls.length; ++i) game.addChild(f.walls[i]);
	// Add doors
	for (var i = 0; i < f.doors.length; ++i) game.addChild(f.doors[i]);
	// Add puzzles
	for (var i = 0; i < f.puzzles.length; ++i) game.addChild(f.puzzles[i]);
	// Add enemies
	for (var i = 0; i < f.enemies.length; ++i) game.addChild(f.enemies[i]);
	// For easy reference
	// Set doorObj to the first locked door, or the first door if none are locked
	doorObj = null;
	for (var i = 0; i < f.doors.length; ++i) {
		if (f.doors[i].locked) {
			doorObj = f.doors[i];
			break;
		}
	}
	if (!doorObj && f.doors.length) doorObj = f.doors[0];
	keyObj = null;
	// Set puzzleObj to the first unsolved puzzle, or null if all solved
	puzzleObj = null;
	for (var i = 0; i < f.puzzles.length; ++i) {
		if (!f.puzzles[i].solved) {
			puzzleObj = f.puzzles[i];
			break;
		}
	}
	ghostObj = f.enemies.length ? f.enemies[0] : null;
}
// --- GUI ---
messageTxt = new Text2('', {
	size: 90,
	fill: 0xFFCCCC
});
messageTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(messageTxt);
floorTxt = new Text2('Floor 1', {
	size: 70,
	fill: 0xCCCCFF
});
floorTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(floorTxt);
// --- Game Setup ---
floors[0] = createFloor0();
floors[1] = createFloor1();
floors[2] = createFloor2();
floors[3] = createFloor3();
floors[4] = createFloor4();
floors[5] = createFloor5();
player = new Player();
player.x = 2048 / 2;
player.y = 2732 - 700;
game.addChild(player);
setupFloor(0);
updateFloorText();
// --- Floor List GUI (right side) ---
var floorListContainer = new Container();
floorListContainer.x = 0;
floorListContainer.y = 0;
LK.gui.right.addChild(floorListContainer);
function updateFloorList() {
	// Remove old children
	if (floorListContainer && floorListContainer.children) {
		while (floorListContainer.children.length) {
			floorListContainer.children[0].destroy();
		}
	}
	// List from top (highest floor) to bottom (lowest)
	var y = 40;
	for (var i = floors.length - 1; i >= 0; --i) {
		// Only show actual floors (skip undefined or null)
		if (!floors[i]) continue;
		var label = "Floor " + (i + 1);
		var txt = new Text2(label, {
			size: 60,
			fill: i === currentFloor ? "#FFD700" : "#CCCCFF"
		});
		txt.anchor.set(1, 0); // right align
		txt.x = 0;
		txt.y = y;
		if (floorListContainer && typeof floorListContainer.addChild === "function") {
			floorListContainer.addChild(txt);
		}
		y += 90;
	}
}
updateFloorList();
function updateFloorText() {
	floorTxt.setText('Floor ' + (currentFloor + 1));
	updateFloorList();
}
// --- Movement & Controls ---
function canMoveTo(x, y) {
	// Check collision with walls
	var f = floors[currentFloor];
	for (var i = 0; i < f.walls.length; ++i) {
		var wall = f.walls[i];
		// Simple AABB collision
		var dx = Math.abs(x - wall.x);
		var dy = Math.abs(y - wall.y);
		if (dx < wall.width / 2 + 60 && dy < wall.height / 2 + 60) {
			return false;
		}
	}
	return true;
}
function handleMove(x, y, obj) {
	if (gameOver) return;
	if (!dragPlayer) return;
	// Clamp to game area
	var px = Math.max(60, Math.min(2048 - 60, x));
	var py = Math.max(60, Math.min(2732 - 60, y));
	// Only move if not colliding with wall
	if (canMoveTo(px, py)) {
		player.moveTo(px, py);
	}
}
game.down = function (x, y, obj) {
	if (gameOver) return;
	// Only start drag if touch/click is on player
	var dx = x - player.x;
	var dy = y - player.y;
	var dist = Math.sqrt(dx * dx + dy * dy);
	if (dist < 100) {
		dragPlayer = true;
		lastPlayerPos.x = player.x;
		lastPlayerPos.y = player.y;
		handleMove(x, y, obj);
	}
};
game.move = function (x, y, obj) {
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragPlayer = false;
};
// --- Puzzle Interaction ---
function trySolvePuzzle() {
	if (!puzzleObj || puzzleObj.solved) return;
	// Simple puzzle: tap puzzle to solve
	puzzleObj.solved = true;
	puzzleSolved = true;
	messageTxt.setText("Puzzle solved!\nThe door unlocked.");
	// Unlock the corresponding door for the solved puzzle
	var f = floors[currentFloor];
	if (f && f.puzzles && f.doors) {
		// Find the index of the solved puzzle in the floor's puzzles array
		var puzzleIdx = -1;
		for (var i = 0; i < f.puzzles.length; ++i) {
			if (f.puzzles[i] === puzzleObj) {
				puzzleIdx = i;
				break;
			}
		}
		// Unlock the door with the same index (if exists and locked)
		if (puzzleIdx >= 0 && f.doors[puzzleIdx] && f.doors[puzzleIdx].locked) {
			f.doors[puzzleIdx].unlock();
		}
	}
	// Animate puzzle fade out
	tween(puzzleObj, {
		alpha: 0
	}, {
		duration: 800,
		onFinish: function onFinish() {
			puzzleObj.destroy();
		}
	});
	LK.setTimeout(function () {
		messageTxt.setText('');
	}, 1500);
}
// --- Door Interaction ---
function tryOpenDoor() {
	if (!doorObj) return;
	if (doorObj.locked) {
		messageTxt.setText("The door is locked.");
		LK.setTimeout(function () {
			messageTxt.setText('');
		}, 1200);
	} else {
		// Go to next floor or win
		if (currentFloor < floors.length - 1) {
			// Go upstairs
			currentFloor++;
			setupFloor(currentFloor);
			player.x = 2048 / 2;
			player.y = 2732 - 700;
			updateFloorText();
			// If reached floor 6 (index 5), win the game
			if (currentFloor === 5) {
				LK.showYouWin();
				return;
			}
			messageTxt.setText("You ascend to the next floor...");
			LK.setTimeout(function () {
				messageTxt.setText('');
			}, 1200);
		} else {
			// Win!
			LK.showYouWin();
		}
	}
}
// --- Enemy (Ghost) Collision ---
function checkGhostCollision() {
	if (!ghostObj) return;
	var dx = player.x - ghostObj.x;
	var dy = player.y - ghostObj.y;
	var dist = Math.sqrt(dx * dx + dy * dy);
	if (dist < 90) {
		// Game over
		gameOver = true;
		player.canMove = false;
		messageTxt.setText("A ghost caught you!");
		LK.effects.flashScreen(0x990000, 1200);
		LK.setTimeout(function () {
			LK.showGameOver();
		}, 1200);
	}
}
// --- Main Game Update ---
game.update = function () {
	if (gameOver) return;
	// Ghost patrol
	if (ghostObj && ghostObj.update) ghostObj.update();
	// Check for puzzle interaction (support multiple puzzles per floor)
	var f = floors[currentFloor];
	if (f && f.puzzles) {
		for (var i = 0; i < f.puzzles.length; ++i) {
			var pz = f.puzzles[i];
			if (!pz.solved) {
				var dx = player.x - pz.x;
				var dy = player.y - pz.y;
				if (Math.sqrt(dx * dx + dy * dy) < 100 && dragPlayer) {
					puzzleObj = pz;
					trySolvePuzzle();
					break;
				}
			}
		}
	}
	// Check for door interaction (support multiple doors per floor)
	if (f && f.doors) {
		for (var i = 0; i < f.doors.length; ++i) {
			var dr = f.doors[i];
			var dx = player.x - dr.x;
			var dy = player.y - dr.y;
			if (Math.abs(dx) < 80 && Math.abs(dy) < 80 && dragPlayer) {
				doorObj = dr;
				if (dr.locked) {
					tryOpenDoor();
				} else {
					// Move player through the door (to the other side of the door)
					if (currentFloor < floors.length - 1) {
						// Go upstairs
						currentFloor++;
						setupFloor(currentFloor);
						player.x = 2048 / 2;
						player.y = 2732 - 700;
						updateFloorText();
						// If reached floor 6 (index 5), win the game
						if (currentFloor === 5) {
							LK.showYouWin();
							return;
						}
						messageTxt.setText("You ascend to the next floor...");
						LK.setTimeout(function () {
							messageTxt.setText('');
						}, 1200);
					} else if (currentFloor > 0) {
						// Move player to one floor down
						currentFloor--;
						setupFloor(currentFloor);
						player.x = 2048 / 2;
						player.y = 2732 - 700;
						updateFloorText();
						messageTxt.setText("You descend to the previous floor...");
						LK.setTimeout(function () {
							messageTxt.setText('');
						}, 1200);
					}
				}
				break;
			}
		}
	}
	// Check for ghost collision
	checkGhostCollision();
};

===================================================================
--- original.js
+++ change.js
@@ -714,10 +714,11 @@
 		}
 	}
 	// List from top (highest floor) to bottom (lowest)
 	var y = 40;
-	for (var i = floors.length - 2; i >= 0; --i) {
-		// skip top floor
+	for (var i = floors.length - 1; i >= 0; --i) {
+		// Only show actual floors (skip undefined or null)
+		if (!floors[i]) continue;
 		var label = "Floor " + (i + 1);
 		var txt = new Text2(label, {
 			size: 60,
 			fill: i === currentFloor ? "#FFD700" : "#CCCCFF"