/**** 
* Classes
****/ 
// Enemy class for targets
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.move = function () {
		self.x += self.speed;
	};
});
// Assets are automatically created based on usage in the code.
// Bullet class for bullets fired by the player
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.move = function () {
		self.x += self.speed * Math.cos(this.direction);
		self.y += self.speed * Math.sin(this.direction);
	};
});

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

/**** 
* Game Code
****/ 
var playerBullets = [];
var enemies = [];
var spawnEnemyInterval = 120; // Frames until next enemy spawns
var enemySpawnTimer = 0;
// Create player
var player = game.addChild(new Container());
player.x = 1024; // Center horizontally
player.y = 2500; // Near bottom
// Function to spawn enemies
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = 0; // Start at the left
	enemy.y = Math.random() * 1366; // Random position from top to middle of the screen
	enemies.push(enemy);
	game.addChild(enemy);
}
// Function to fire a bullet
function fireBullet() {
	var bullet = new PlayerBullet();
	bullet.x = 1024; // Center horizontally
	bullet.y = 2732; // Bottom of the screen
	playerBullets.push(bullet);
	game.addChild(bullet);
	return bullet;
}
// Touch event to move player and fire bullets
game.on('down', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	player.x = pos.x;
	var bullet = fireBullet();
	bullet.direction = Math.atan2(bullet.y - pos.y, bullet.x - pos.x);
});
// Main game loop
LK.on('tick', function () {
	// Move bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		playerBullets[i].move();
		if (playerBullets[i].y < 0) {
			// Remove bullets that go off screen
			playerBullets[i].destroy();
			playerBullets.splice(i, 1);
		}
	}
	// Move enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].move();
		if (enemies[j].y > 2732) {
			// Remove enemies that go off screen
			enemies[j].destroy();
			enemies.splice(j, 1);
		}
	}
	// Check for collisions
	for (var b = playerBullets.length - 1; b >= 0; b--) {
		for (var e = enemies.length - 1; e >= 0; e--) {
			if (playerBullets[b] && enemies[e] && playerBullets[b].intersects(enemies[e])) {
				// Destroy both bullet and enemy on collision
				playerBullets[b].destroy();
				playerBullets.splice(b, 1);
				enemies[e].destroy();
				enemies.splice(e, 1);
				break; // Exit loop after collision to avoid errors
			}
		}
	}
	// Spawn enemies
	if (enemySpawnTimer <= 0) {
		spawnEnemy();
		enemySpawnTimer = spawnEnemyInterval;
	} else {
		enemySpawnTimer--;
	}
});

===================================================================
--- original.js
+++ change.js
@@ -7,9 +7,9 @@
 	var enemyGraphics = self.attachAsset('enemy', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.speed = 2;
+	self.speed = 5;
 	self.move = function () {
 		self.x += self.speed;
 	};
 });