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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.xSpeed = 10.9375;
	self.ySpeed = -20;
	self.gravity = 1;
	self.lift = -15;
	self.flap = function () {
		self.ySpeed = self.lift * 1.5;
		LK.getSound('flap').play();
	};
	self._update_migrated = function () {
		if (game.isMouseDown) {
			self.ySpeed += self.gravity / 3;
		} else {
			self.ySpeed += self.gravity;
		}
		self.y += self.ySpeed;
		self.x += self.xSpeed;
		if (self.y <= 0 || self.y >= 2732) {
			self.speed = -self.speed;
		}
		var targetRotation = Math.atan2(self.ySpeed, self.xSpeed * self.scale.x) / 2;
		birdGraphics.rotation += (targetRotation - birdGraphics.rotation) / 10;
	};
	self.flip = function () {
		self.scale.x *= -1;
	};
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.speed = 3;
	// Start rotation animation
	tween(coinGraphics, {
		rotation: Math.PI * 2
	}, {
		duration: 2000,
		easing: tween.linear,
		onFinish: function onFinish() {
			if (!self.collected) {
				tween(coinGraphics, {
					rotation: Math.PI * 4
				}, {
					duration: 2000,
					easing: tween.linear,
					onFinish: arguments.callee
				});
			}
		}
	});
	self._move_migrated = function (speed) {
		self.y += speed;
	};
	self.collect = function () {
		if (!self.collected) {
			self.collected = true;
			LK.getSound('coinCollect').play();
			tween(self, {
				scaleX: 1.5,
				scaleY: 1.5,
				alpha: 0
			}, {
				duration: 300,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					self.destroy();
				}
			});
		}
	};
	return self;
});
var Leaderboard = Container.expand(function () {
	var self = Container.call(this);
	// Leaderboard background
	var leaderBg = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 25,
		scaleY: 1
	});
	leaderBg.alpha = 0.9;
	leaderBg.tint = 0x2196F3;
	// Title
	var titleText = new Text2('LEADERBOARD', {
		size: 150,
		fill: '#ffffff',
		font: 'Arial Black',
		align: 'center'
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 0;
	titleText.y = -500;
	self.addChild(titleText);
	// Get high scores from storage
	var highScores = storage.highScores || [0, 0, 0, 0, 0];
	// Display top 5 scores
	for (var i = 0; i < 5; i++) {
		var scoreText = new Text2(i + 1 + '. ' + highScores[i], {
			size: 100,
			fill: '#ffd700',
			font: 'Arial Black',
			align: 'center'
		});
		scoreText.anchor.set(0.5, 0.5);
		scoreText.x = 0;
		scoreText.y = -300 + i * 120;
		self.addChild(scoreText);
	}
	// Back button
	var backButton = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 1
	});
	backButton.tint = 0xFF5722;
	backButton.y = 400;
	var backText = new Text2('BACK', {
		size: 120,
		fill: '#ffffff',
		font: 'Arial Black',
		align: 'center'
	});
	backText.anchor.set(0.5, 0.5);
	backText.x = 0;
	backText.y = 400;
	self.addChild(backText);
	self.down = function (x, y, obj) {
		// Use the x, y coordinates directly instead of trying to convert from obj
		// Check back button click (button is at y=400, height is about 100)
		if (y > 350 && y < 450) {
			game.showMenu();
		}
	};
	return self;
});
var Menu = Container.expand(function () {
	var self = Container.call(this);
	// Menu background
	var menuBg = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 25,
		scaleY: 1
	});
	menuBg.alpha = 0.8;
	menuBg.tint = 0x87CEEB;
	// Title
	var titleText = new Text2('FLAPPY BIRD', {
		size: 200,
		fill: '#ff6b35',
		font: 'Arial Black',
		dropShadow: true,
		dropShadowColor: '#b8860b',
		dropShadowBlur: 10,
		dropShadowDistance: 5,
		align: 'center'
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 0;
	titleText.y = -400;
	self.addChild(titleText);
	// Play button
	var playButton = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 1
	});
	playButton.tint = 0x4CAF50;
	playButton.y = -100;
	var playText = new Text2('PLAY', {
		size: 120,
		fill: '#ffffff',
		font: 'Arial Black',
		align: 'center'
	});
	playText.anchor.set(0.5, 0.5);
	playText.x = 0;
	playText.y = -100;
	self.addChild(playText);
	// Leaderboard button
	var leaderButton = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 1
	});
	leaderButton.tint = 0x2196F3;
	leaderButton.y = 100;
	var leaderText = new Text2('LEADERBOARD', {
		size: 100,
		fill: '#ffffff',
		font: 'Arial Black',
		align: 'center'
	});
	leaderText.anchor.set(0.5, 0.5);
	leaderText.x = 0;
	leaderText.y = 100;
	self.addChild(leaderText);
	// Best score display
	var bestScore = storage.bestScore || 0;
	var bestScoreText = new Text2('Best Score: ' + bestScore, {
		size: 80,
		fill: '#ffd700',
		font: 'Arial Black',
		align: 'center'
	});
	bestScoreText.anchor.set(0.5, 0.5);
	bestScoreText.x = 0;
	bestScoreText.y = 300;
	self.addChild(bestScoreText);
	self.down = function (x, y, obj) {
		// Use the x, y coordinates directly instead of trying to convert from obj
		// Check play button click (button is at y=-100, height is about 100)
		if (y > -150 && y < -50) {
			game.startGame();
		}
		// Check leaderboard button click (button is at y=100, height is about 100)
		if (y > 50 && y < 150) {
			game.showLeaderboard();
		}
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleShadow = self.attachAsset('obstacleShadow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleShadow.rotation = Math.PI / 4;
	var obstacleShadow2 = self.attachAsset('obstacleShadow2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleShadow2.rotation = Math.PI / 4;
	obstacleShadow2.y = -7;
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleGraphics.rotation = Math.PI / 4;
	self.speed = 5;
	self._move_migrated = function (speed) {
		self.y += speed;
	};
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});

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

/**** 
* Game Code
****/ 
var tutorialTextWhite = new Text2('Tap to Flap\nHold to Float', {
	size: 150,
	fill: '#ffffff',
	font: 'Arial Black',
	align: 'center'
});
tutorialTextWhite.anchor.set(.5, 1);
tutorialTextWhite.x = -4;
tutorialTextWhite.y = -62;
LK.gui.bottom.addChild(tutorialTextWhite);
var tutorialText = new Text2('Tap to Flap\nHold to Float', {
	size: 150,
	fill: '#ff6b35',
	font: 'Arial Black',
	dropShadow: true,
	dropShadowColor: '#b8860b',
	dropShadowBlur: 8,
	dropShadowDistance: 4,
	dropShadowAngle: 0,
	align: 'center'
});
tutorialText.anchor.set(.5, 1);
tutorialText.y = -50;
LK.gui.bottom.addChild(tutorialText);
game.score = 0;
game.coinsCollected = 0;
game.lives = 1;
game.obstacleSpeed = 5;
game.obstacleSpeedIncrease = 0.005;
game.gameState = 'menu'; // 'menu', 'playing', 'leaderboard'
game.menu = null;
game.leaderboard = null;
game.checkObstacleCollision = function (obstacles) {
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i]._move_migrated();
		var dist = Math.sqrt(Math.pow(bird.x - obstacles[i].x, 2) + Math.pow(bird.y - obstacles[i].y, 2));
		if (dist < 280) {
			game.lives--;
			livesText.setText('Lives: ' + game.lives);
			livesText2.setText('Lives: ' + game.lives);
			if (game.lives <= 0) {
				game.saveScore();
				LK.setScore(game.score);
				LK.getSound('gameOverJingle').play();
				LK.showGameOver();
			} else {
				// Flash red to indicate life lost
				LK.effects.flashScreen(0xff0000, 500);
				// Reset bird position
				bird.x = 1024;
				bird.y = 1366;
				bird.ySpeed = 0;
			}
		}
	}
};
game.saveScore = function () {
	// Update best score
	var bestScore = storage.bestScore || 0;
	if (game.score > bestScore) {
		storage.bestScore = game.score;
	}
	// Update high scores list
	var highScores = storage.highScores || [0, 0, 0, 0, 0];
	highScores.push(game.score);
	highScores.sort(function (a, b) {
		return b - a;
	});
	highScores = highScores.slice(0, 5);
	storage.highScores = highScores;
};
game.showMenu = function () {
	game.gameState = 'menu';
	if (game.leaderboard) {
		game.leaderboard.destroy();
		game.leaderboard = null;
	}
	if (!game.menu) {
		game.menu = game.addChild(new Menu());
		game.menu.x = 1024;
		game.menu.y = 1366;
	}
	// Hide game UI elements
	tutorialText.visible = false;
	tutorialTextWhite.visible = false;
	scoreText.visible = false;
	scoreText2.visible = false;
	coinText.visible = false;
	coinText2.visible = false;
	livesText.visible = false;
	livesText2.visible = false;
	// Hide game objects
	bird.visible = false;
	leftWall.visible = false;
	rightWall.visible = false;
};
game.showLeaderboard = function () {
	game.gameState = 'leaderboard';
	if (game.menu) {
		game.menu.destroy();
		game.menu = null;
	}
	if (!game.leaderboard) {
		game.leaderboard = game.addChild(new Leaderboard());
		game.leaderboard.x = 1024;
		game.leaderboard.y = 1366;
	}
};
game.startGame = function () {
	game.gameState = 'playing';
	if (game.menu) {
		game.menu.destroy();
		game.menu = null;
	}
	if (game.leaderboard) {
		game.leaderboard.destroy();
		game.leaderboard = null;
	}
	// Reset game state
	game.score = 0;
	game.coinsCollected = 0;
	game.lives = 1;
	game.obstacleSpeed = 5;
	// Show game UI elements
	tutorialText.visible = true;
	tutorialTextWhite.visible = true;
	scoreText.visible = true;
	scoreText2.visible = true;
	coinText.visible = true;
	coinText2.visible = true;
	livesText.visible = true;
	livesText2.visible = true;
	// Show and reset game objects
	bird.visible = true;
	bird.x = 1024;
	bird.y = 1366;
	bird.ySpeed = 0;
	leftWall.visible = true;
	rightWall.visible = true;
	// Clear obstacles and coins
	for (var i = leftObstacles.length - 1; i >= 0; i--) {
		leftObstacles[i].destroy();
		leftObstacles.splice(i, 1);
	}
	for (var i = rightObstacles.length - 1; i >= 0; i--) {
		rightObstacles[i].destroy();
		rightObstacles.splice(i, 1);
	}
	for (var i = coins.length - 1; i >= 0; i--) {
		coins[i].destroy();
		coins.splice(i, 1);
	}
	// Update UI
	scoreText.setText('0');
	scoreText2.setText('0');
	coinText.setText('Coins: 0');
	coinText2.setText('Coins: 0');
	livesText.setText('Lives: 1');
	livesText2.setText('Lives: 1');
};
game.setBackgroundColor(0x87CEEB);
var scoreText = new Text2('0', {
	size: 150,
	fill: '#ff6b35',
	font: 'Arial Black',
	dropShadow: true,
	dropShadowColor: '#b8860b',
	dropShadowBlur: 8,
	dropShadowDistance: 4,
	dropShadowAngle: 0
});
scoreText.anchor.set(.5, 0);
LK.gui.top.addChild(scoreText);
var scoreText2 = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Arial Black'
});
scoreText2.anchor.set(.5, 0);
scoreText2.x = -4;
scoreText2.y = -5;
LK.gui.top.addChild(scoreText2);
LK.gui.top.addChild(scoreText);
var coinText = new Text2('Coins: 0', {
	size: 80,
	fill: '#ffd700',
	font: 'Arial Black',
	dropShadow: true,
	dropShadowColor: '#b8860b',
	dropShadowBlur: 5,
	dropShadowDistance: 2,
	dropShadowAngle: 0
});
coinText.anchor.set(1, 0);
coinText.x = -20;
coinText.y = 20;
LK.gui.topRight.addChild(coinText);
var coinText2 = new Text2('Coins: 0', {
	size: 80,
	fill: '#ffffff',
	font: 'Arial Black'
});
coinText2.anchor.set(1, 0);
coinText2.x = -24;
coinText2.y = 15;
LK.gui.topRight.addChild(coinText2);
LK.gui.topRight.addChild(coinText);
var livesText = new Text2('Lives: 1', {
	size: 80,
	fill: '#ff4444',
	font: 'Arial Black',
	dropShadow: true,
	dropShadowColor: '#aa0000',
	dropShadowBlur: 5,
	dropShadowDistance: 2,
	dropShadowAngle: 0
});
livesText.anchor.set(1, 0);
livesText.x = -20;
livesText.y = 120;
LK.gui.topRight.addChild(livesText);
var livesText2 = new Text2('Lives: 1', {
	size: 80,
	fill: '#ffffff',
	font: 'Arial Black'
});
livesText2.anchor.set(1, 0);
livesText2.x = -24;
livesText2.y = 115;
LK.gui.topRight.addChild(livesText2);
LK.gui.topRight.addChild(livesText);
var bird = game.addChild(new Bird());
var leftWall = game.addChild(new Wall());
leftWall.x = 0;
leftWall.y = 1366;
var rightWall = game.addChild(new Wall());
rightWall.x = 2048;
rightWall.y = 1366;
var leftObstacles = [],
	rightObstacles = [],
	coins = [];
var coinSpawnTime = 120;
var coinSpawnCounter = 0;
var obstacleSpawnRandomness = 180;
var obstacleSpawnRandomnessDecrease = 0.025 * (2 / 3);
var obstacleSpawnY = -500;
var leftObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
var rightObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
bird.x = 1024;
bird.y = 1366;
game.isMouseDown = false;
// Start with menu
game.showMenu();
game.down = function (x, y, obj) {
	if (game.gameState === 'playing') {
		bird.flap();
		game.isMouseDown = true;
	}
};
game.up = function (x, y, obj) {
	if (game.gameState === 'playing') {
		game.isMouseDown = false;
	}
};
game.update = function () {
	if (game.gameState !== 'playing') {
		return;
	}
	bird._update_migrated();
	if (game.score > 2) {
		tutorialText.y += 5;
		tutorialTextWhite.y += 5;
	}
	scoreText.setText(game.score);
	scoreText2.setText(game.score);
	game.obstacleSpeed += game.obstacleSpeedIncrease;
	obstacleSpawnRandomness -= obstacleSpawnRandomnessDecrease;
	if (obstacleSpawnRandomness < 40) {
		obstacleSpawnRandomness = 40;
	}
	if (LK.ticks >= leftObstacleSpawnTime) {
		var newObstacle = game.addChildAt(new Obstacle(), 0);
		newObstacle.x = 0;
		newObstacle.y = obstacleSpawnY;
		leftObstacles.push(newObstacle);
		leftObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (LK.ticks >= rightObstacleSpawnTime) {
		var newObstacle = game.addChildAt(new Obstacle(), 0);
		newObstacle.x = 2048;
		newObstacle.y = -newObstacle.height;
		rightObstacles.push(newObstacle);
		rightObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (bird.intersects(leftWall) && bird.xSpeed < 0 || bird.intersects(rightWall) && bird.xSpeed > 0) {
		bird.xSpeed = -bird.xSpeed;
		bird.flip();
		game.score++;
		LK.setScore(game.score);
		LK.getSound('bounce').play();
	}
	for (var i = leftObstacles.length - 1; i >= 0; i--) {
		leftObstacles[i]._move_migrated(game.obstacleSpeed);
		if (leftObstacles[i].y > 3232) {
			leftObstacles[i].destroy();
			leftObstacles.splice(i, 1);
		}
	}
	for (var i = rightObstacles.length - 1; i >= 0; i--) {
		rightObstacles[i]._move_migrated(game.obstacleSpeed);
		if (rightObstacles[i].y > 3232) {
			rightObstacles[i].destroy();
			rightObstacles.splice(i, 1);
		}
	}
	// Spawn coins
	coinSpawnCounter++;
	if (coinSpawnCounter >= coinSpawnTime) {
		var newCoin = game.addChild(new Coin());
		newCoin.x = Math.random() * 1500 + 300; // Random X between walls
		newCoin.y = -100;
		coins.push(newCoin);
		coinSpawnCounter = 0;
		coinSpawnTime = Math.random() * 180 + 60; // Random spawn time
	}
	// Move and check coin collection
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		if (!coin.collected) {
			coin._move_migrated(game.obstacleSpeed);
			// Check collision with bird
			if (bird.intersects(coin)) {
				coin.collect();
				game.coinsCollected++;
				game.score += 3; // Give bonus points for coins
				LK.setScore(game.score);
				scoreText.setText(game.score);
				scoreText2.setText(game.score);
				coinText.setText('Coins: ' + game.coinsCollected);
				coinText2.setText('Coins: ' + game.coinsCollected);
				// Check for extra life every 10 coins (maximum 3 lives)
				if (game.coinsCollected % 10 === 0 && game.lives < 3) {
					game.lives++;
					livesText.setText('Lives: ' + game.lives);
					livesText2.setText('Lives: ' + game.lives);
					// Flash the lives text to indicate extra life gained
					tween(livesText, {
						scaleX: 1.5,
						scaleY: 1.5
					}, {
						duration: 200,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							tween(livesText, {
								scaleX: 1,
								scaleY: 1
							}, {
								duration: 200,
								easing: tween.easeOut
							});
						}
					});
				}
				coins.splice(i, 1);
				continue;
			}
			// Remove coins that are off screen
			if (coin.y > 3000) {
				coin.destroy();
				coins.splice(i, 1);
			}
		}
	}
	game.checkObstacleCollision(leftObstacles);
	game.checkObstacleCollision(rightObstacles);
	if (bird.y < 0 || bird.y > 2732) {
		game.lives--;
		livesText.setText('Lives: ' + game.lives);
		livesText2.setText('Lives: ' + game.lives);
		if (game.lives <= 0) {
			game.saveScore();
			LK.setScore(game.score);
			LK.getSound('gameOverJingle').play();
			LK.showGameOver();
		} else {
			// Flash red to indicate life lost
			LK.effects.flashScreen(0xff0000, 500);
			// Reset bird position
			bird.x = 1024;
			bird.y = 1366;
			bird.ySpeed = 0;
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -143,11 +143,11 @@
 	backText.x = 0;
 	backText.y = 400;
 	self.addChild(backText);
 	self.down = function (x, y, obj) {
-		var localPos = self.toLocal(obj.parent.toGlobal(obj.position));
-		// Check back button click
-		if (localPos.y > 350 && localPos.y < 450) {
+		// Use the x, y coordinates directly instead of trying to convert from obj
+		// Check back button click (button is at y=400, height is about 100)
+		if (y > 350 && y < 450) {
 			game.showMenu();
 		}
 	};
 	return self;
@@ -228,15 +228,15 @@
 	bestScoreText.x = 0;
 	bestScoreText.y = 300;
 	self.addChild(bestScoreText);
 	self.down = function (x, y, obj) {
-		var localPos = self.toLocal(obj.parent.toGlobal(obj.position));
-		// Check play button click
-		if (localPos.y > -150 && localPos.y < -50) {
+		// Use the x, y coordinates directly instead of trying to convert from obj
+		// Check play button click (button is at y=-100, height is about 100)
+		if (y > -150 && y < -50) {
 			game.startGame();
 		}
-		// Check leaderboard button click
-		if (localPos.y > 50 && localPos.y < 150) {
+		// Check leaderboard button click (button is at y=100, height is about 100)
+		if (y > 50 && y < 150) {
 			game.showLeaderboard();
 		}
 	};
 	return self;