/**** 
* Classes
****/
// Define the Grendizer (player's character) class
var Grendizer = Container.expand(function () {
	var self = Container.call(this);
	var grendizerGraphics = self.createAsset('grendizer', 'Player character', 0.5, 0.5);
	self.speed = 50;
	self.moveLeft = function () {
		self.x = Math.max(self.width / 2, self.x - self.speed);
	};
	self.moveRight = function () {
		self.x = Math.min(2048 - self.width / 2, self.x + self.speed);
	};
	self.update = function () {
		// Update logic for Grendizer
	};
});
// Define the Bullet class for Grendizer
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('heroBullet', 'Hero Bullet', 0.5, 0.5);
	self.speed = -10;
	self.move = function () {
		self.y += self.speed;
	};
});
// Define the Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy character', 0.5, 0.5);
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
	};
	self.shootMissile = function () {
		var missile = new EnemyMissile();
		missile.x = self.x;
		missile.y = self.y + self.height / 2;
		game.addChild(missile);
		return missile;
	};
});
// Define the Boost class
var Boost = Container.expand(function () {
	var self = Container.call(this);
	var boostGraphics = self.createAsset('boost', 'Boost item', 0.5, 0.5);
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
	};
});
// Define the EnemyMissile class
var EnemyMissile = Container.expand(function () {
	var self = Container.call(this);
	var missileGraphics = self.createAsset('enemyMissile', 'Enemy Missile', 0.5, 0.5);
	self.speed = 5;
	self.move = function () {
		self.y += self.speed;
	};
});

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

/**** 
* Game Code
****/
// Initialize important asset arrays
var heroBullets = [];
var enemies = [];
var boosts = [];
// Create the player's character
var player = game.addChild(new Grendizer());
player.x = 2048 / 2;
player.y = 2732 - player.height;
// Game tick event
LK.on('tick', function () {
	// Update player
	player.update();
	// Move and check hero bullets
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		heroBullets[i].move();
		if (heroBullets[i].y < -heroBullets[i].height) {
			heroBullets[i].destroy();
			heroBullets.splice(i, 1);
		}
	}
	// Move and check enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].move();
		// Have each enemy shoot a missile every 240 ticks
		if (LK.ticks % 240 == 0) {
			enemyMissiles.push(enemies[j].shootMissile());
		}
		if (enemies[j].y > 2732 + enemies[j].height) {
			enemies[j].destroy();
			enemies.splice(j, 1);
		}
	}
	// Move and check enemy missiles
	for (var m = enemyMissiles.length - 1; m >= 0; m--) {
		enemyMissiles[m].move();
		if (enemyMissiles[m].y > 2732 + enemyMissiles[m].height) {
			enemyMissiles[m].destroy();
			enemyMissiles.splice(m, 1);
		}
	}
	// Move and check boosts
	for (var k = boosts.length - 1; k >= 0; k--) {
		boosts[k].move();
		if (boosts[k].y > 2732 + boosts[k].height) {
			boosts[k].destroy();
			boosts.splice(k, 1);
		}
	}
	// Initialize important asset arrays
	var heroBullets = [];
	var enemies = [];
	var boosts = [];
	var enemyMissiles = [];
	// Spawn enemies and boosts
	if (LK.ticks % 120 == 0) {
		var newEnemy = new Enemy();
		newEnemy.x = Math.random() * (2048 - newEnemy.width) + newEnemy.width / 2;
		newEnemy.y = -newEnemy.height;
		enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
	if (LK.ticks % 300 == 0) {
		var newBoost = new Boost();
		newBoost.x = Math.random() * (2048 - newBoost.width) + newBoost.width / 2;
		newBoost.y = -newBoost.height;
		boosts.push(newBoost);
		game.addChild(newBoost);
	}
	// Check for collisions
	enemies.forEach(function (enemy) {
		if (player.intersects(enemy)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
		heroBullets.forEach(function (bullet) {
			if (bullet.intersects(enemy)) {
				enemy.destroy();
				bullet.destroy();
				enemies.splice(enemies.indexOf(enemy), 1);
				heroBullets.splice(heroBullets.indexOf(bullet), 1);
			}
		});
	});
	boosts.forEach(function (boost) {
		if (player.intersects(boost)) {
			boost.destroy();
			boosts.splice(boosts.indexOf(boost), 1);
			// Implement boost effect here
		}
	});
	// Check for collisions with enemy missiles
	enemyMissiles.forEach(function (missile) {
		if (player.intersects(missile)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	});
});
// Touch event listeners for player movement
game.on('down', function (obj) {
	var touchPos = obj.event.getLocalPosition(game);
	if (touchPos.x < player.x) {
		player.moveLeft();
	} else {
		player.moveRight();
	}
});
// Fire bullets
game.on('down', function (obj) {
	var newBullet = new HeroBullet();
	newBullet.x = player.x;
	newBullet.y = player.y - player.height / 2;
	heroBullets.push(newBullet);
	game.addChild(newBullet);
});

===================================================================
--- original.js
+++ change.js
@@ -118,8 +118,11 @@
 			boosts.splice(k, 1);
 		}
 	}
 	// Initialize important asset arrays
+	var heroBullets = [];
+	var enemies = [];
+	var boosts = [];
 	var enemyMissiles = [];
 	// Spawn enemies and boosts
 	if (LK.ticks % 120 == 0) {
 		var newEnemy = new Enemy();