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

/**** 
* Classes
****/ 
// --- Dot (Pellet) ---
var Dot = Container.expand(function () {
	var self = Container.call(this);
	var dotAsset = self.attachAsset('dot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = dotAsset.width / 2;
	return self;
});
// --- Ghost ---
var Ghost = Container.expand(function () {
	var self = Container.call(this);
	// Attach ghost asset (color set later)
	var ghostAsset = self.attachAsset('ghostBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Ghost color
	self.color = 0xffff00;
	ghostAsset.tint = self.color;
	// Movement speed
	self.speed = 6.4; // 20% slower than previous (was 8)
	// Direction
	self.dir = {
		x: 0,
		y: 0
	};
	// Scatter/Chase mode
	self.mode = 'chase'; // or 'scatter' or 'frightened'
	self.frightenedTicks = 0;
	// For collision
	self.radius = ghostAsset.width / 2;
	// Ghost AI type: 'blinky', 'pinky', 'inky', 'clyde'
	self.ghostType = 'blinky';
	// Set color
	self.setColor = function (color) {
		self.color = color;
		ghostAsset.tint = color;
	};
	// Set type
	self.setType = function (type) {
		self.ghostType = type;
	};
	// Set mode
	self.setMode = function (mode) {
		self.mode = mode;
		if (mode === 'frightened') {
			ghostAsset.tint = 0x2222ff;
		} else {
			ghostAsset.tint = self.color;
		}
	};
	// Move to tile
	self.moveToTile = function (tile) {
		self.x = tile.x * tileSize + tileSize / 2 + mazeOffsetX;
		self.y = tile.y * tileSize + tileSize / 2 + mazeOffsetY;
	};
	// Get current tile
	self.getTile = function () {
		return {
			x: Math.floor((self.x - mazeOffsetX) / tileSize),
			y: Math.floor((self.y - mazeOffsetY) / tileSize)
		};
	};
	// AI: get target tile
	self.getTargetTile = function () {
		// If player exists, target the player's current tile (chase mode)
		if (typeof player !== "undefined" && player && typeof player.getTile === "function") {
			var targetTile = player.getTile();
			return {
				x: targetTile.x,
				y: targetTile.y
			};
		}
		// Fallback: random movement as before
		var curTile = self.getTile();
		var dirs = [{
			x: 0,
			y: -1
		},
		// up
		{
			x: 1,
			y: 0
		},
		// right
		{
			x: 0,
			y: 1
		},
		// down
		{
			x: -1,
			y: 0
		} // left
		];
		// Try to keep going in the same direction if possible
		if (canMove(curTile.x, curTile.y, self.dir.x, self.dir.y)) {
			return {
				x: curTile.x + self.dir.x,
				y: curTile.y + self.dir.y
			};
		}
		// Otherwise, pick a random valid direction
		var options = [];
		for (var i = 0; i < dirs.length; i++) {
			var d = dirs[i];
			if (canMove(curTile.x, curTile.y, d.x, d.y)) {
				options.push(d);
			}
		}
		if (options.length > 0) {
			var idx = Math.floor(Math.random() * options.length);
			var d = options[idx];
			return {
				x: curTile.x + d.x,
				y: curTile.y + d.y
			};
		}
		// If stuck, stay in place
		return curTile;
	};
	// AI: choose direction
	self.chooseDir = function () {
		var curTile = self.getTile();
		var target = self.getTargetTile();
		// All possible directions
		var dirs = [{
			x: 0,
			y: -1
		},
		// up
		{
			x: 1,
			y: 0
		},
		// right
		{
			x: 0,
			y: 1
		},
		// down
		{
			x: -1,
			y: 0
		} // left
		];
		// Don't reverse
		var opp = {
			x: -self.dir.x,
			y: -self.dir.y
		};
		// For frightened, pick random
		if (self.mode === 'frightened') {
			var options = [];
			for (var i = 0; i < dirs.length; i++) {
				var d = dirs[i];
				if ((d.x !== opp.x || d.y !== opp.y) && canMove(curTile.x, curTile.y, d.x, d.y)) {
					options.push(d);
				}
			}
			if (options.length > 0) {
				var idx = Math.floor(Math.random() * options.length);
				return options[idx];
			}
			return self.dir;
		}
		// Otherwise, pick direction that minimizes distance to target
		var minDist = 99999,
			bestDir = self.dir;
		for (var i = 0; i < dirs.length; i++) {
			var d = dirs[i];
			if ((d.x !== opp.x || d.y !== opp.y) && canMove(curTile.x, curTile.y, d.x, d.y)) {
				var nx = curTile.x + d.x,
					ny = curTile.y + d.y;
				var dist = (target.x - nx) * (target.x - nx) + (target.y - ny) * (target.y - ny);
				if (dist < minDist) {
					minDist = dist;
					bestDir = d;
				}
			}
		}
		return bestDir;
	};
	// Update per tick
	self.update = function () {
		// If in tunnel, wrap
		if (self.x < mazeOffsetX - tileSize / 2) {
			self.x = mazeOffsetX + (mazeCols - 1) * tileSize + tileSize / 2;
		}
		if (self.x > mazeOffsetX + (mazeCols - 1) * tileSize + tileSize / 2) {
			self.x = mazeOffsetX - tileSize / 2;
		}
		// Frightened mode timer
		if (self.mode === 'frightened') {
			self.frightenedTicks--;
			if (self.frightenedTicks <= 0) {
				self.setMode('chase');
			}
		}
		// At center of tile, choose new dir
		var curTile = self.getTile();
		var cx = curTile.x * tileSize + tileSize / 2 + mazeOffsetX;
		var cy = curTile.y * tileSize + tileSize / 2 + mazeOffsetY;
		var dist = Math.abs(self.x - cx) + Math.abs(self.y - cy);
		if (dist < 2) {
			// Always choose direction based on AI (chase, scatter, frightened)
			var newDir = self.chooseDir();
			self.dir = newDir;
			// Snap to center
			self.x = cx;
			self.y = cy;
		}
		// Move if possible
		if (canMove(curTile.x, curTile.y, self.dir.x, self.dir.y)) {
			self.x += self.dir.x * self.speed;
			self.y += self.dir.y * self.speed;
		}
	};
	return self;
});
// --- Player (Pac) ---
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach yellow circle asset for player
	var playerAsset = self.attachAsset('playerCircle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Movement speed (pixels per tick)
	self.speed = 10;
	// Current direction: {x: -1, y:0} etc.
	self.dir = {
		x: 0,
		y: 0
	};
	self.nextDir = {
		x: 0,
		y: 0
	};
	// For smooth movement
	self.targetTile = null;
	// For mouth animation
	self.mouthOpen = true;
	self.mouthTween = null;
	// For collision
	self.radius = playerAsset.width / 2;
	// Animate mouth (simple scaleX)
	function animateMouth() {
		if (self.mouthTween) tween.stop(playerAsset, {
			scaleX: true
		});
		playerAsset.scaleX = 1;
		self.mouthTween = tween(playerAsset, {
			scaleX: 0.7
		}, {
			duration: 120,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(playerAsset, {
					scaleX: 1
				}, {
					duration: 120,
					easing: tween.easeInOut,
					onFinish: animateMouth
				});
			}
		});
	}
	animateMouth();
	// Set direction
	self.setDir = function (dx, dy) {
		self.nextDir = {
			x: dx,
			y: dy
		};
	};
	// Move to tile
	self.moveToTile = function (tile) {
		self.x = tile.x * tileSize + tileSize / 2 + mazeOffsetX;
		self.y = tile.y * tileSize + tileSize / 2 + mazeOffsetY;
	};
	// Get current tile
	self.getTile = function () {
		return {
			x: Math.floor((self.x - mazeOffsetX) / tileSize),
			y: Math.floor((self.y - mazeOffsetY) / tileSize)
		};
	};
	// Update per tick
	self.update = function () {
		// If in tunnel, wrap
		if (self.x < mazeOffsetX - tileSize / 2) {
			self.x = mazeOffsetX + (mazeCols - 1) * tileSize + tileSize / 2;
		}
		if (self.x > mazeOffsetX + (mazeCols - 1) * tileSize + tileSize / 2) {
			self.x = mazeOffsetX - tileSize / 2;
		}
		// Try to turn if possible
		var curTile = self.getTile();
		if (canMove(curTile.x, curTile.y, self.nextDir.x, self.nextDir.y)) {
			self.dir = {
				x: self.nextDir.x,
				y: self.nextDir.y
			};
		}
		// Move if possible
		if (canMove(curTile.x, curTile.y, self.dir.x, self.dir.y)) {
			self.x += self.dir.x * self.speed;
			self.y += self.dir.y * self.speed;
		} else {
			// Snap to center of tile
			self.moveToTile(curTile);
		}
	};
	return self;
});
// --- PowerDot (Power Pellet) ---
var PowerDot = Container.expand(function () {
	var self = Container.call(this);
	var pdAsset = self.attachAsset('powerDot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = pdAsset.width / 2;
	return self;
});
// --- Wall ---
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallAsset = self.attachAsset('wallBlock', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Example: A new, more open map with a different wall and dot pattern
// --- Maze Layout ---
// 0: empty, 1: wall, 2: dot, 3: power dot, 4: player start, 5: ghost start, 6: tunnel
// Simple 19x21 maze (Pac-Man like, but smaller for MVP)
var mazeData = [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1], [1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1], [1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1], [1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 1, 1, 5, 1, 1, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 2, 2, 1, 2, 2, 2, 1, 4, 1, 2, 2, 2, 1, 2, 2, 2, 1], [1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1], [1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1], [1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1], [1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1], [1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]];
var mazeRows = mazeData.length;
var mazeCols = mazeData[0].length;
// --- Maze Rendering ---
var tileSize = 90;
var mazeWidth = mazeCols * tileSize;
var mazeHeight = mazeRows * tileSize;
var mazeOffsetX = Math.floor((2048 - mazeWidth) / 2);
var mazeOffsetY = Math.floor((2732 - mazeHeight) / 2);
// --- Asset Initialization ---
// --- Game State ---
var player = null;
var ghosts = [];
var dots = [];
var powerDots = [];
var walls = [];
var lives = 3;
var level = 1;
var score = 0;
var gameActive = true;
var frightenedTicksMax = 360; // 6 seconds at 60fps
// --- Difficulty Levels ---
var difficulty = "Normal"; // Options: "Easy", "Normal", "Hard"
// You can change this value to "Easy" or "Hard" to test
function getGhostSpeed() {
	if (difficulty === "Easy") return 5.2; // 35% slower than original
	if (difficulty === "Hard") return 8.8; // 10% faster than original
	return 6.4; // Normal (20% slower than original)
}
// --- GUI ---
var scoreTxt = new Text2('0', {
	size: 100,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var livesTxt = new Text2('♥♥♥', {
	size: 80,
	fill: 0xFF4444
});
livesTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(livesTxt);
livesTxt.y = 110;
// Show difficulty in GUI (optional)
var diffTxt = new Text2('Difficulty: ' + difficulty, {
	size: 60,
	fill: "#fff"
});
diffTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(diffTxt);
diffTxt.y = 200;
// --- Settings Button (⚙️) ---
var settingsBtn = new Container();
var settingsBg = LK.getAsset('centerCircle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.1,
	scaleY: 1.1,
	tint: 0x222222
});
settingsBtn.addChild(settingsBg);
var settingsTxt = new Text2("⚙️", {
	size: 80,
	fill: "#fff"
});
settingsTxt.anchor.set(0.5, 0.5);
settingsBtn.addChild(settingsTxt);
// Place in top-right, with margin
settingsBtn.x = 2048 - 100;
settingsBtn.y = 100;
LK.gui.topRight.addChild(settingsBtn);
settingsBtn.zIndex = 1000; // ensure on top
// --- Helper: canMove ---
function canMove(x, y, dx, dy) {
	var nx = x + dx,
		ny = y + dy;
	if (nx < 0) nx = mazeCols - 1;
	if (nx >= mazeCols) nx = 0;
	if (ny < 0 || ny >= mazeRows) return false;
	if (mazeData[ny][nx] === 1) return false;
	return true;
}
// --- Helper: reset maze ---
function resetMaze() {
	// Remove old
	for (var i = 0; i < dots.length; i++) dots[i].destroy();
	for (var i = 0; i < powerDots.length; i++) powerDots[i].destroy();
	for (var i = 0; i < walls.length; i++) walls[i].destroy();
	dots = [];
	powerDots = [];
	walls = [];
	// Place maze
	for (var y = 0; y < mazeRows; y++) {
		for (var x = 0; x < mazeCols; x++) {
			var v = mazeData[y][x];
			var px = x * tileSize + tileSize / 2 + mazeOffsetX;
			var py = y * tileSize + tileSize / 2 + mazeOffsetY;
			if (v === 1) {
				var wall = new Wall();
				wall.x = px;
				wall.y = py;
				game.addChild(wall);
				walls.push(wall);
			} else if (v === 2) {
				var dot = new Dot();
				dot.x = px;
				dot.y = py;
				game.addChild(dot);
				dots.push(dot);
			} else if (v === 3) {
				var pd = new PowerDot();
				pd.x = px;
				pd.y = py;
				game.addChild(pd);
				powerDots.push(pd);
			}
		}
	}
}
// --- Helper: reset player and ghosts ---
function resetActors() {
	// Remove old
	if (player) player.destroy();
	for (var i = 0; i < ghosts.length; i++) ghosts[i].destroy();
	ghosts = [];
	// Place player
	// Start player at the first open black area (not a wall) from the top, scanning left to right
	var foundStart = false;
	for (var y = 0; y < mazeRows && !foundStart; y++) {
		for (var x = 0; x < mazeCols && !foundStart; x++) {
			if (mazeData[y][x] !== 1) {
				// not a wall
				player = new Player();
				player.x = x * tileSize + tileSize / 2 + mazeOffsetX;
				player.y = y * tileSize + tileSize / 2 + mazeOffsetY;
				game.addChild(player);
				foundStart = true;
			}
		}
	}
	// Fallback in case all are walls (should never happen)
	if (!player) {
		player = new Player();
		player.x = 1 * tileSize + tileSize / 2 + mazeOffsetX;
		player.y = 1 * tileSize + tileSize / 2 + mazeOffsetY;
		game.addChild(player);
	}
	// Place ghosts
	var ghostColors = [0xffff00, 0xffff00, 0xffff00, 0xffff00];
	var ghostTypes = ['blinky', 'pinky', 'inky', 'clyde'];
	var ghostCount = 4;
	var gidx = 0;
	for (var y = 0; y < mazeRows; y++) {
		for (var x = 0; x < mazeCols; x++) {
			if (mazeData[y][x] === 5 && gidx < ghostCount) {
				var ghost = new Ghost();
				ghost.x = x * tileSize + tileSize / 2 + mazeOffsetX;
				ghost.y = y * tileSize + tileSize / 2 + mazeOffsetY;
				ghost.setColor(ghostColors[gidx]);
				ghost.setType(ghostTypes[gidx]);
				ghost.speed = getGhostSpeed(); // Set speed based on difficulty
				ghost.dir = {
					x: 0,
					y: -1
				};
				game.addChild(ghost);
				ghosts.push(ghost);
				gidx++;
			}
		}
	}
}
// --- Helper: update GUI ---
function updateGUI() {
	scoreTxt.setText(score);
	var lstr = '';
	for (var i = 0; i < lives; i++) lstr += '♥';
	livesTxt.setText(lstr);
}
// --- Helper: start level ---
function startLevel() {
	resetMaze();
	resetActors();
	updateGUI();
	gameActive = true;
}
// --- Helper: lose life ---
function loseLife() {
	lives--;
	updateGUI();
	// Play loseLife sound if available, otherwise fallback to fail or error
	var loseLifeSound = LK.getSound('loseLife');
	if (loseLifeSound && typeof loseLifeSound.play === "function") {
		loseLifeSound.play();
	} else {
		var failSound = LK.getSound('fail');
		if (failSound && typeof failSound.play === "function") {
			failSound.play();
		} else {
			var errorSound = LK.getSound('error');
			if (errorSound && typeof errorSound.play === "function") errorSound.play();
		}
	}
	if (lives <= 0) {
		gameActive = false;
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
		return;
	}
	// Reset player/ghosts only
	resetActors();
}
// --- Helper: next level ---
function nextLevel() {
	level++;
	// Increase ghost speed a bit, but keep within difficulty bounds
	for (var i = 0; i < ghosts.length; i++) {
		ghosts[i].speed = getGhostSpeed() + (level - 1) * 0.5; // Slightly increase per level, but base on difficulty
	}
	startLevel();
}
// --- Helper: frighten ghosts ---
function frightenGhosts() {
	for (var i = 0; i < ghosts.length; i++) {
		ghosts[i].setMode('frightened');
		ghosts[i].frightenedTicks = frightenedTicksMax;
	}
}
// --- Helper: check collision (circle) ---
function circlesCollide(a, b) {
	var dx = a.x - b.x,
		dy = a.y - b.y;
	var r = a.radius + b.radius;
	return dx * dx + dy * dy < r * r;
}
// --- Input Handling (swipe) ---
var touchStart = null;
game.down = function (x, y, obj) {
	touchStart = {
		x: x,
		y: y
	};
};
game.up = function (x, y, obj) {
	if (!touchStart) return;
	var dx = x - touchStart.x,
		dy = y - touchStart.y;
	if (Math.abs(dx) > Math.abs(dy)) {
		if (dx > 30) player.setDir(1, 0);else if (dx < -30) player.setDir(-1, 0);
	} else {
		if (dy > 30) player.setDir(0, 1);else if (dy < -30) player.setDir(0, -1);
	}
	touchStart = null;
};
// --- Main Update Loop ---
// --- Ghost Pathfinding Timer ---
// Ghosts will check the player's position and update their path every 0.5 seconds (30 ticks)
var ghostPathTimer = 0;
game.update = function () {
	if (!gameActive) return;
	// Update player
	if (player) player.update();
	// --- Ghost Pathfinding: update every 0.5s (30 ticks) ---
	ghostPathTimer++;
	if (ghostPathTimer >= 30) {
		ghostPathTimer = 0;
		for (var gi = 0; gi < ghosts.length; gi++) {
			var ghost = ghosts[gi];
			// Only chase if not frightened
			if (ghost.mode !== 'frightened') {
				// Find shortest path to player using BFS
				var startTile = ghost.getTile();
				var targetTile = player.getTile();
				var queue = [];
				var visited = [];
				for (var y = 0; y < mazeRows; y++) {
					visited[y] = [];
					for (var x = 0; x < mazeCols; x++) {
						visited[y][x] = false;
					}
				}
				queue.push({
					x: startTile.x,
					y: startTile.y,
					path: []
				});
				visited[startTile.y][startTile.x] = true;
				var found = false;
				var path = [];
				var dirs = [{
					x: 0,
					y: -1
				},
				// up
				{
					x: 1,
					y: 0
				},
				// right
				{
					x: 0,
					y: 1
				},
				// down
				{
					x: -1,
					y: 0
				} // left
				];
				while (queue.length > 0 && !found) {
					var node = queue.shift();
					if (node.x === targetTile.x && node.y === targetTile.y) {
						path = node.path;
						found = true;
						break;
					}
					for (var d = 0; d < dirs.length; d++) {
						var nx = node.x + dirs[d].x;
						var ny = node.y + dirs[d].y;
						// Wrap horizontally (tunnel)
						if (nx < 0) nx = mazeCols - 1;
						if (nx >= mazeCols) nx = 0;
						if (ny < 0 || ny >= mazeRows) continue;
						if (mazeData[ny][nx] === 1) continue; // wall
						if (visited[ny][nx]) continue;
						visited[ny][nx] = true;
						queue.push({
							x: nx,
							y: ny,
							path: node.path.concat([{
								x: nx,
								y: ny
							}])
						});
					}
				}
				// If found, set direction toward first step in path
				if (found && path.length > 0) {
					var nextStep = path[0];
					var dx = nextStep.x - startTile.x;
					var dy = nextStep.y - startTile.y;
					// Handle tunnel wrap
					if (dx > 1) dx = -1;
					if (dx < -1) dx = 1;
					ghost.dir = {
						x: dx,
						y: dy
					};
				} else {
					// If blocked, pick a random open direction
					var curTile = ghost.getTile();
					var options = [];
					for (var d = 0; d < dirs.length; d++) {
						var nx = curTile.x + dirs[d].x;
						var ny = curTile.y + dirs[d].y;
						if (nx < 0) nx = mazeCols - 1;
						if (nx >= mazeCols) nx = 0;
						if (ny < 0 || ny >= mazeRows) continue;
						if (mazeData[ny][nx] === 1) continue;
						options.push(dirs[d]);
					}
					if (options.length > 0) {
						var idx = Math.floor(Math.random() * options.length);
						ghost.dir = {
							x: options[idx].x,
							y: options[idx].y
						};
					}
				}
			}
		}
	}
	// Update ghosts
	for (var i = 0; i < ghosts.length; i++) ghosts[i].update();
	// --- Collisions: Player <-> Dots ---
	for (var i = dots.length - 1; i >= 0; i--) {
		if (circlesCollide(player, dots[i])) {
			score += 10;
			dots[i].destroy();
			dots.splice(i, 1);
			updateGUI();
			// Play dotBeep if available, otherwise play beep
			var dotBeepSound = LK.getSound('dotBeep');
			if (dotBeepSound && typeof dotBeepSound.play === "function") {
				dotBeepSound.play();
			} else {
				var beepSound = LK.getSound('beep');
				if (beepSound && typeof beepSound.play === "function") beepSound.play();
			}
		}
	}
	// --- Collisions: Player <-> PowerDots ---
	// Find the blue powerDot (assume only one, at most)
	var bluePowerDot = null;
	for (var i = 0; i < powerDots.length; i++) {
		// The blue powerDot is the one with color 0x00ffff (from asset definition)
		// We can check by checking the attached asset's tint or just assume the first is blue if only one
		// For robustness, check radius (blue is 40, others could be different)
		if (powerDots[i].radius === 20) {
			// 40/2 = 20
			bluePowerDot = powerDots[i];
			break;
		}
	}
	// Find the red powerDot (assume only one, at most)
	var redPowerDot = null;
	for (var i = 0; i < powerDots.length; i++) {
		if (powerDots[i] !== bluePowerDot) {
			redPowerDot = powerDots[i];
			break;
		}
	}
	// Now handle collisions for all powerDots
	for (var i = powerDots.length - 1; i >= 0; i--) {
		if (circlesCollide(player, powerDots[i])) {
			score += 50;
			// Store respawn position before destroying
			var respawnX = powerDots[i].x;
			var respawnY = powerDots[i].y;
			powerDots[i].destroy();
			powerDots.splice(i, 1);
			updateGUI();
			frightenGhosts();
			// Play dotBeep if available, otherwise play beep
			var dotBeepSound = LK.getSound('dotBeep');
			if (dotBeepSound && typeof dotBeepSound.play === "function") {
				dotBeepSound.play();
			} else {
				var beepSound = LK.getSound('beep');
				if (beepSound && typeof beepSound.play === "function") beepSound.play();
			}
			// Respawn powerDot at same location after 10 seconds (600 ticks)
			(function (x, y) {
				LK.setTimeout(function () {
					// Only respawn if the game is still active and not already a powerDot at this location
					if (gameActive) {
						// Check if a powerDot already exists at this location (avoid duplicates)
						var exists = false;
						for (var j = 0; j < powerDots.length; j++) {
							if (Math.abs(powerDots[j].x - x) < 1 && Math.abs(powerDots[j].y - y) < 1) {
								exists = true;
								break;
							}
						}
						if (!exists) {
							var pd = new PowerDot();
							pd.x = x;
							pd.y = y;
							game.addChild(pd);
							powerDots.push(pd);
						}
					}
				}, 10000); // 10 seconds
			})(respawnX, respawnY);
		}
	}
	// --- Collisions: Player <-> Ghosts ---
	for (var i = 0; i < ghosts.length; i++) {
		if (circlesCollide(player, ghosts[i])) {
			if (ghosts[i].mode === 'frightened') {
				score += 200;
				ghosts[i].setMode('chase');
				ghosts[i].moveToTile({
					x: 9,
					y: 6
				}); // send to ghost start
				updateGUI();
			} else {
				loseLife();
				return;
			}
		}
	}
	// --- Win Condition: all dots eaten ---
	if (dots.length === 0 && powerDots.length === 0) {
		gameActive = false;
		LK.effects.flashScreen(0x00ff00, 1000);
		LK.showYouWin();
		// Change mazeData for new level
		if (level === 1) {
			// Level 2: new maze layout, more open and with more power dots
			mazeData = [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1], [1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1], [1, 2, 1, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 1], [1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 1, 1, 5, 1, 1, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 2, 2, 1, 2, 2, 2, 1, 4, 1, 2, 2, 2, 1, 2, 2, 2, 1], [1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1], [1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1], [1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1], [1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1], [1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1], [1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1], [1, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]];
			mazeRows = mazeData.length;
			mazeCols = mazeData[0].length;
			mazeWidth = mazeCols * tileSize;
			mazeHeight = mazeRows * tileSize;
			mazeOffsetX = Math.floor((2048 - mazeWidth) / 2);
			mazeOffsetY = Math.floor((2732 - mazeHeight) / 2);
		}
		nextLevel();
	}
};
// --- Difficulty Selection Menu ---
var menuContainer = new Container();
game.addChild(menuContainer);
// Center of screen
var centerX = 2048 / 2;
var centerY = 2732 / 2;
// Button style
function makeButton(label, y, selected) {
	var btn = new Container();
	var bg = LK.getAsset('centerCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 4,
		scaleY: 2.2,
		tint: selected ? 0x44ff44 : 0x222222
	});
	btn.addChild(bg);
	var txt = new Text2(label, {
		size: 120,
		fill: selected ? "#222" : "#fff"
	});
	txt.anchor.set(0.5, 0.5);
	btn.addChild(txt);
	btn.x = centerX;
	btn.y = y;
	btn.bg = bg;
	btn.txt = txt;
	return btn;
}
// Track selected difficulty
var menuDifficulty = "Normal";
var easyBtn = makeButton("Easy", centerY - 220, false);
var normalBtn = makeButton("⚪ Normal", centerY, true);
var hardBtn = makeButton("Hard", centerY + 220, false);
menuContainer.addChild(easyBtn);
menuContainer.addChild(normalBtn);
menuContainer.addChild(hardBtn);
var startBtn = null;
// Button tap logic
function updateMenuButtons() {
	easyBtn.bg.tint = menuDifficulty === "Easy" ? 0x44ff44 : 0x222222;
	if (typeof easyBtn.txt.setFill === "function") {
		easyBtn.txt.setFill(menuDifficulty === "Easy" ? "#222" : "#fff");
	}
	normalBtn.bg.tint = menuDifficulty === "Normal" ? 0x44ff44 : 0x222222;
	if (typeof normalBtn.txt.setFill === "function") {
		normalBtn.txt.setFill(menuDifficulty === "Normal" ? "#222" : "#fff");
	}
	hardBtn.bg.tint = menuDifficulty === "Hard" ? 0x44ff44 : 0x222222;
	if (typeof hardBtn.txt.setFill === "function") {
		hardBtn.txt.setFill(menuDifficulty === "Hard" ? "#222" : "#fff");
	}
}
easyBtn.down = function (x, y, obj) {
	menuDifficulty = "Easy";
	updateMenuButtons();
	if (!startBtn) showStartBtn();
};
normalBtn.down = function (x, y, obj) {
	menuDifficulty = "Normal";
	updateMenuButtons();
	if (!startBtn) showStartBtn();
};
hardBtn.down = function (x, y, obj) {
	menuDifficulty = "Hard";
	updateMenuButtons();
	if (!startBtn) showStartBtn();
};
function showStartBtn() {
	startBtn = makeButton("Start Game", centerY + 500, false);
	startBtn.bg.tint = 0x0080ff;
	if (typeof startBtn.txt.setFill === "function") {
		startBtn.txt.setFill("#fff");
	}
	menuContainer.addChild(startBtn);
	startBtn.down = function (x, y, obj) {
		// Set global difficulty and enemy speed
		if (menuDifficulty === "Easy") {
			difficulty = "Easy";
		} else if (menuDifficulty === "Hard") {
			difficulty = "Hard";
		} else {
			difficulty = "Normal";
		}
		// Set music per difficulty
		if (difficulty === "Easy") {
			LK.playMusic('calmTrack', {
				loop: true
			});
		} else if (difficulty === "Hard") {
			LK.playMusic('intenseTrack', {
				loop: true
			});
		} else {
			LK.playMusic('normalTrack', {
				loop: true
			});
		}
		// Hide menu
		menuContainer.visible = false;
		// Update difficulty label
		diffTxt.setText('Difficulty: ' + difficulty);
		// Start game
		startLevel();
	};
}
// Only show menu at start
gameActive = false;
// Hide GUI elements until game starts
scoreTxt.visible = false;
livesTxt.visible = false;
diffTxt.visible = false;
// Show GUI when game starts
var oldStartLevel = startLevel;
startLevel = function startLevel() {
	scoreTxt.visible = true;
	livesTxt.visible = true;
	diffTxt.visible = true;
	oldStartLevel();
};
// --- Settings Popup for In-Game Difficulty Change ---
var settingsPopup = new Container();
settingsPopup.visible = false;
game.addChild(settingsPopup);
// Dim background
var dimBg = LK.getAsset('centerCircle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 30,
	scaleY: 40,
	tint: 0x000000
});
dimBg.alpha = 0.45;
dimBg.x = centerX;
dimBg.y = centerY;
settingsPopup.addChild(dimBg);
// Popup box
var popupBox = LK.getAsset('centerCircle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 7,
	scaleY: 7,
	tint: 0x222222
});
popupBox.x = centerX;
popupBox.y = centerY;
settingsPopup.addChild(popupBox);
// Popup label
var popupLabel = new Text2("Change Difficulty", {
	size: 90,
	fill: "#fff"
});
popupLabel.anchor.set(0.5, 0.5);
popupLabel.x = centerX;
popupLabel.y = centerY - 260;
settingsPopup.addChild(popupLabel);
// Popup buttons
function makePopupBtn(label, y, selected) {
	var btn = new Container();
	var bg = LK.getAsset('centerCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 4,
		scaleY: 2.2,
		tint: selected ? 0x44ff44 : 0x222222
	});
	btn.addChild(bg);
	var txt = new Text2(label, {
		size: 120,
		fill: selected ? "#222" : "#fff"
	});
	txt.anchor.set(0.5, 0.5);
	btn.addChild(txt);
	btn.x = centerX;
	btn.y = y;
	btn.bg = bg;
	btn.txt = txt;
	return btn;
}
var popupEasyBtn = makePopupBtn("Easy", centerY - 100, false);
var popupNormalBtn = makePopupBtn("⚪ Normal", centerY + 60, true);
var popupHardBtn = makePopupBtn("Hard", centerY + 220, false);
settingsPopup.addChild(popupEasyBtn);
settingsPopup.addChild(popupNormalBtn);
settingsPopup.addChild(popupHardBtn);
// Helper to update popup button visuals
function updatePopupBtns() {
	popupEasyBtn.bg.tint = difficulty === "Easy" ? 0x44ff44 : 0x222222;
	if (typeof popupEasyBtn.txt.setFill === "function") {
		popupEasyBtn.txt.setFill(difficulty === "Easy" ? "#222" : "#fff");
	}
	popupNormalBtn.bg.tint = difficulty === "Normal" ? 0x44ff44 : 0x222222;
	if (typeof popupNormalBtn.txt.setFill === "function") {
		popupNormalBtn.txt.setFill(difficulty === "Normal" ? "#222" : "#fff");
	}
	popupHardBtn.bg.tint = difficulty === "Hard" ? 0x44ff44 : 0x222222;
	if (typeof popupHardBtn.txt.setFill === "function") {
		popupHardBtn.txt.setFill(difficulty === "Hard" ? "#222" : "#fff");
	}
}
// Popup logic: change difficulty and apply instantly (no pause/resume)
function popupSetDifficulty(newDiff) {
	if (difficulty === newDiff) return;
	difficulty = newDiff;
	diffTxt.setText('Difficulty: ' + difficulty);
	// Update ghost speed immediately
	for (var i = 0; i < ghosts.length; i++) {
		ghosts[i].speed = getGhostSpeed();
	}
	// Change music if needed
	if (difficulty === "Easy") {
		LK.playMusic('calmTrack', {
			loop: true
		});
	} else if (difficulty === "Hard") {
		LK.playMusic('intenseTrack', {
			loop: true
		});
	} else {
		LK.playMusic('normalTrack', {
			loop: true
		});
	}
	updatePopupBtns();
	settingsPopup.visible = false;
}
// Button handlers
popupEasyBtn.down = function () {
	popupSetDifficulty("Easy");
};
popupNormalBtn.down = function () {
	popupSetDifficulty("Normal");
};
popupHardBtn.down = function () {
	popupSetDifficulty("Hard");
};
// Settings button handler
settingsBtn.down = function () {
	if (!gameActive) return;
	settingsPopup.visible = true;
	updatePopupBtns();
};
// Allow closing popup by tapping dim background (does not change difficulty)
dimBg.down = function () {
	settingsPopup.visible = false;
};