/**** 
* Classes
****/ 
// Define the Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -self.height) {
			self.destroy();
		}
	};
});
// Define the Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = -self.height;
			self.x = Math.random() * 2048;
		}
	};
});
//<Assets used in the game will automatically appear here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		// Player update logic
	};
	self.move = function (x, y) {
		self.x = x;
		self.y = y;
	};
});

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

/**** 
* Game Code
****/ 
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
// Initialize enemies
var enemies = [];
for (var i = 0; i < 5; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * -2732;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Initialize bullets array
var bullets = [];
// Initialize rockets array
var rockets = [];
// Handle player movement
game.move = function (x, y, obj) {
	player.move(x, y);
};
// Handle shooting
game.down = function (x, y, obj) {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
};
// Update game state
game.update = function () {
	// Update player
	player.update();
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
		if (player.intersects(enemies[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		for (var k = enemies.length - 1; k >= 0; k--) {
			if (bullets[j].intersects(enemies[k])) {
				bullets[j].destroy();
				bullets.splice(j, 1);
				enemies[k].destroy();
				enemies.splice(k, 1);
				break;
			}
		}
	}
	// Spawn new enemies if needed
	while (enemies.length < 5) {
		var newEnemy = new Enemy();
		newEnemy.x = Math.random() * 2048;
		newEnemy.y = Math.random() * -2732;
		enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -3,9 +3,9 @@
 ****/ 
 // Define the Bullet class
 var Bullet = Container.expand(function () {
 	var self = Container.call(this);
-	var bulletGraphics = auto.attachAsset('bullet', {
+	var bulletGraphics = self.attachAsset('bullet', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = -15;