/**** 
* Classes
****/ 
var Base = Container.expand(function () {
	var self = Container.call(this);
	var baseGraphics = self.attachAsset('base', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 500;
	self.update = function () {
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
	};
});
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('boss', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 200;
	self.speed = 0.5;
	self.update = function () {
		// Update logic for boss
		// Move straight down
		self.y += self.speed;
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			self.die();
		}
	};
	self.die = function () {
		// Handle boss death
		for (var i = bullets.length - 1; i >= 0; i--) {
			if (bullets[i].intersects(self)) {
				bullets[i].destroy();
				bullets.splice(i, 1);
			}
		}
		// Play boss death sound
		LK.getSound('bossDeath').play();
		self.destroy();
	};
});
// 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 = 10;
	self.update = function () {
		self.y -= self.speed;
		if (self.y < 0 || self.y > 2732) {
			self.destroy();
		}
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 50;
	self.speed = 1;
	self.update = function () {
		// Update logic for enemy
		// Move straight down
		self.y += self.speed;
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			self.die();
		}
	};
	self.die = function () {
		// Handle enemy death
		for (var i = bullets.length - 1; i >= 0; i--) {
			if (bullets[i].intersects(self)) {
				bullets[i].destroy();
				bullets.splice(i, 1);
			}
		}
		// Play enemy death sound
		LK.getSound('enemyDeath').play();
		self.destroy();
	};
});
// HealthBar class
var HealthBar = Container.expand(function () {
	var self = Container.call(this);
	var healthBarGraphics = self.attachAsset('healthBar', {
		anchorX: 0.5,
		anchorY: 0.5,
		height: 25
	});
	self.update = function () {
		// Update logic for health bar
		// Adjust width of health bar based on health of parent
		healthBarGraphics.width = self.parent.health * 2;
	};
});
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.speed = 5;
	self.update = function () {
		// Update logic for hero
		// Move hero left if it's not at the edge of the screen
		if (self.x > 0) {
			self.x -= self.speed;
		}
		// Move hero right if it's not at the edge of the screen
		if (self.x < 2048) {
			self.x += self.speed;
		}
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			self.die();
		}
	};
	self.die = function () {
		// Handle hero death
		LK.showGameOver();
	};
});

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

/**** 
* Game Code
****/ 
LK.playMusic('backgroundMusic');
// Initialize hero
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 200;
// Attach health bar to hero
var heroHealthBar = hero.addChild(new HealthBar());
heroHealthBar.y = 75; // Position health bar below hero
var base = game.addChild(new Base());
base.x = 2048 / 2;
base.y = 2732 - 50;
// Attach health bar to base
var baseHealthBar = base.addChild(new HealthBar());
baseHealthBar.y = 0; // Position health bar above base
// Initialize enemies array
var enemies = [];
// Initialize bullets array
var bullets = [];
// Function to spawn enemies
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = 0;
	// Attach health bar to enemy
	var enemyHealthBar = enemy.addChild(new HealthBar());
	enemyHealthBar.y = -75; // Position health bar slightly above enemy
	enemies.push(enemy);
	game.addChild(enemy);
}
// Function to shoot bullets
function shootBullet() {
	var bullet = new Bullet();
	bullet.x = hero.x;
	bullet.y = hero.y;
	bullets.push(bullet);
	game.addChild(bullet);
}
// Handle touch events for shooting
game.down = function (x, y, obj) {
	hero.x = x;
	shootBullet();
};
// Update game logic
game.update = function () {
	// Update hero
	hero.update();
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].intersects(hero)) {
			hero.takeDamage(10);
			enemies[i].destroy();
			enemies.splice(i, 1);
		} else if (enemies[i].intersects(base)) {
			base.takeDamage(10);
			enemies[i].destroy();
			enemies.splice(i, 1);
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		for (var k = enemies.length - 1; k >= 0; k--) {
			if (enemies[k].health > 0 && bullets[j].intersects(enemies[k])) {
				enemies[k].takeDamage(20);
				if (bullets[j]) {
					bullets[j].destroy();
				}
				bullets.splice(j, 1);
				break;
			}
		}
	}
	if (LK.ticks % 60 == 0) {
		spawnEnemy();
	}
	// Spawn boss enemy periodically
	if (LK.ticks % 600 == 0) {
		var boss = new Boss();
		boss.x = Math.random() * 2048;
		boss.y = 0;
		// Attach health bar to boss
		var bossHealthBar = boss.addChild(new HealthBar());
		bossHealthBar.y = -125; // Position health bar slightly above boss
		enemies.push(boss);
		game.addChild(boss);
	}
	// Spawn powerups periodically
};
game.move = function (x, y, obj) {
	hero.x = x;
};

===================================================================
--- original.js
+++ change.js
@@ -146,14 +146,15 @@
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000 //Init game with black background 
+	backgroundColor: 0x000000 //Init game with black background
 });
 
 /**** 
 * Game Code
 ****/ 
+LK.playMusic('backgroundMusic');
 // Initialize hero
 var hero = game.addChild(new Hero());
 hero.x = 2048 / 2;
 hero.y = 2732 - 200;