/**** 
* Classes
****/ 
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Coin update logic if needed
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyHD', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 500;
	self.update = function () {
		// Update logic for enemy
	};
	self.shoot = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y;
		game.addChild(bullet);
		enemyBullets.push(bullet);
	};
});
// EnemyBullet class
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBulletHD', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('heroHD', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 400;
	self.update = function () {
		// Update logic for hero
	};
	self.shoot = function () {
		var bullet = new HeroBullet();
		bullet.x = self.x;
		bullet.y = self.y;
		game.addChild(bullet);
		heroBullets.push(bullet);
	};
});
// HeroBullet class
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('heroBulletHD', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});

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

/**** 
* Game Code
****/ 
// Initialize arrays and variables
var hero;
var enemies = [];
var heroBullets = [];
var enemyBullets = [];
var coins = [];
var score = 0;
// Create hero
hero = new Hero();
hero.x = 2048 / 2;
hero.y = 2732 - 200;
game.addChild(hero);
// Create enemies
for (var i = 0; i < 5; i++) {
	var enemy = new Enemy();
	enemy.x = (i + 1) * 300;
	enemy.y = 200;
	game.addChild(enemy);
	enemies.push(enemy);
}
// Update function
game.update = function () {
	// Update hero
	hero.update();
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].health <= 0) {
			enemies[i].destroy();
			enemies.splice(i, 1);
			score += 10;
		}
	}
	// Update hero bullets
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		heroBullets[i].update();
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (heroBullets[i].intersects(enemies[j])) {
				enemies[j].health -= 50;
				heroBullets[i].destroy();
				heroBullets.splice(i, 1);
				break;
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		enemyBullets[i].update();
		if (enemyBullets[i].intersects(hero)) {
			hero.health -= 10;
			enemyBullets[i].destroy();
			enemyBullets.splice(i, 1);
			if (hero.health <= 0) {
				LK.showGameOver();
			}
		}
	}
	// Create coins
	if (LK.ticks % 120 == 0) {
		var coin = new Coin();
		coin.x = Math.random() * 2048;
		coin.y = Math.random() * 2732;
		game.addChild(coin);
		coins.push(coin);
	}
	// Update coins
	for (var i = coins.length - 1; i >= 0; i--) {
		coins[i].update();
		if (coins[i].intersects(hero)) {
			coins[i].destroy();
			coins.splice(i, 1);
			score += 5;
		}
	}
	// Enemies shoot
	if (LK.ticks % 60 == 0) {
		for (var i = 0; i < enemies.length; i++) {
			enemies[i].shoot();
		}
	}
};
// Handle touch events
game.down = function (x, y, obj) {
	hero.shoot();
	// Check for coin collection
	for (var i = coins.length - 1; i >= 0; i--) {
		if (coins[i].intersects(hero)) {
			coins[i].destroy();
			coins.splice(i, 1);
			score += 5;
		}
	}
};
game.move = function (x, y, obj) {
	hero.x = x;
	hero.y = y;
};
game.up = function (x, y, obj) {
	// No action needed on touch up
};

===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,17 @@
 /**** 
 * Classes
 ****/ 
+var Coin = Container.expand(function () {
+	var self = Container.call(this);
+	var coinGraphics = self.attachAsset('coin', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		// Coin update logic if needed
+	};
+});
 // Enemy class
 var Enemy = Container.expand(function () {
 	var self = Container.call(this);
 	var enemyGraphics = self.attachAsset('enemyHD', {
@@ -85,8 +95,9 @@
 var hero;
 var enemies = [];
 var heroBullets = [];
 var enemyBullets = [];
+var coins = [];
 var score = 0;
 // Create hero
 hero = new Hero();
 hero.x = 2048 / 2;
@@ -136,8 +147,25 @@
 				LK.showGameOver();
 			}
 		}
 	}
+	// Create coins
+	if (LK.ticks % 120 == 0) {
+		var coin = new Coin();
+		coin.x = Math.random() * 2048;
+		coin.y = Math.random() * 2732;
+		game.addChild(coin);
+		coins.push(coin);
+	}
+	// Update coins
+	for (var i = coins.length - 1; i >= 0; i--) {
+		coins[i].update();
+		if (coins[i].intersects(hero)) {
+			coins[i].destroy();
+			coins.splice(i, 1);
+			score += 5;
+		}
+	}
 	// Enemies shoot
 	if (LK.ticks % 60 == 0) {
 		for (var i = 0; i < enemies.length; i++) {
 			enemies[i].shoot();
@@ -146,8 +174,16 @@
 };
 // Handle touch events
 game.down = function (x, y, obj) {
 	hero.shoot();
+	// Check for coin collection
+	for (var i = coins.length - 1; i >= 0; i--) {
+		if (coins[i].intersects(hero)) {
+			coins[i].destroy();
+			coins.splice(i, 1);
+			score += 5;
+		}
+	}
 };
 game.move = function (x, y, obj) {
 	hero.x = x;
 	hero.y = y;