===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,357 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Asteroid = Container.expand(function () {
+	var self = Container.call(this);
+	var asteroidGraphics = self.attachAsset('asteroid', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3 + Math.random() * 4;
+	self.rotationSpeed = (Math.random() - 0.5) * 0.1;
+	self.update = function () {
+		self.y += self.speed;
+		asteroidGraphics.rotation += self.rotationSpeed;
+	};
+	return self;
+});
+var Bullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -12;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 2 + Math.random() * 3;
+	self.shootTimer = Math.floor(Math.random() * 120) + 60;
+	self.health = 1;
+	self.update = function () {
+		self.y += self.speed;
+		self.shootTimer--;
+		if (self.shootTimer <= 0 && self.y < 2500) {
+			self.shoot();
+			self.shootTimer = 60 + Math.floor(Math.random() * 60);
+		}
+	};
+	self.shoot = function () {
+		var bullet = new EnemyBullet();
+		bullet.x = self.x;
+		bullet.y = self.y + 40;
+		enemyBullets.push(bullet);
+		game.addChild(bullet);
+	};
+	self.takeDamage = function () {
+		self.health--;
+		if (self.health <= 0) {
+			self.destroy();
+			LK.setScore(LK.getScore() + 10);
+			LK.getSound('enemyDestroy').play();
+		}
+	};
+	return self;
+});
+var EnemyBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('enemyBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var powerUpGraphics = self.attachAsset('powerUp', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.pulseTimer = 0;
+	self.update = function () {
+		self.y += self.speed;
+		self.pulseTimer += 0.1;
+		powerUpGraphics.scaleX = 1 + Math.sin(self.pulseTimer) * 0.3;
+		powerUpGraphics.scaleY = 1 + Math.sin(self.pulseTimer) * 0.3;
+	};
+	return self;
+});
+var Spaceship = Container.expand(function () {
+	var self = Container.call(this);
+	var spaceshipGraphics = self.attachAsset('spaceship', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 3;
+	self.fireRate = 15;
+	self.fireTimer = 0;
+	self.powerUpTimer = 0;
+	self.hasPowerUp = false;
+	self.update = function () {
+		if (self.fireTimer > 0) {
+			self.fireTimer--;
+		}
+		if (self.powerUpTimer > 0) {
+			self.powerUpTimer--;
+			spaceshipGraphics.tint = 0x00FFFF;
+		} else {
+			self.hasPowerUp = false;
+			spaceshipGraphics.tint = 0xFFFFFF;
+		}
+	};
+	self.shoot = function () {
+		if (self.fireTimer <= 0) {
+			var bullet = new Bullet();
+			bullet.x = self.x;
+			bullet.y = self.y - 50;
+			bullets.push(bullet);
+			game.addChild(bullet);
+			self.fireTimer = self.hasPowerUp ? 5 : self.fireRate;
+			LK.getSound('shoot').play();
+		}
+	};
+	self.takeDamage = function () {
+		self.health--;
+		LK.effects.flashObject(self, 0xFF0000, 500);
+		if (self.health <= 0) {
+			LK.getSound('explosion').play();
+			LK.showGameOver();
+		}
+	};
+	self.applyPowerUp = function () {
+		self.hasPowerUp = true;
+		self.powerUpTimer = 300; // 5 seconds at 60fps
+		LK.getSound('powerUpCollect').play();
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x000011
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var spaceship;
+var enemies = [];
+var asteroids = [];
+var bullets = [];
+var enemyBullets = [];
+var powerUps = [];
+var dragNode = null;
+var spawnTimer = 0;
+var waveTimer = 0;
+var difficultyLevel = 1;
+var lastSpaceshipX = 0;
+var lastSpaceshipY = 0;
+// UI Elements
+var scoreText = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0, 0);
+scoreText.x = 120;
+scoreText.y = 50;
+LK.gui.topLeft.addChild(scoreText);
+var healthText = new Text2('Health: 3', {
+	size: 60,
+	fill: 0x00FF00
+});
+healthText.anchor.set(1, 0);
+LK.gui.topRight.addChild(healthText);
+// Initialize spaceship
+spaceship = game.addChild(new Spaceship());
+spaceship.x = 1024;
+spaceship.y = 2400;
+lastSpaceshipX = spaceship.x;
+lastSpaceshipY = spaceship.y;
+// Touch controls
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		dragNode.x = Math.max(40, Math.min(2008, x));
+		dragNode.y = Math.max(100, Math.min(2632, y));
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	dragNode = spaceship;
+	handleMove(x, y, obj);
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Spawn functions
+function spawnEnemy() {
+	var enemy = new Enemy();
+	enemy.x = Math.random() * 1800 + 124;
+	enemy.y = -80;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+function spawnAsteroid() {
+	var asteroid = new Asteroid();
+	asteroid.x = Math.random() * 1800 + 124;
+	asteroid.y = -120;
+	asteroids.push(asteroid);
+	game.addChild(asteroid);
+}
+function spawnPowerUp() {
+	var powerUp = new PowerUp();
+	powerUp.x = Math.random() * 1800 + 124;
+	powerUp.y = -40;
+	powerUps.push(powerUp);
+	game.addChild(powerUp);
+}
+// Game update loop
+game.update = function () {
+	// Update UI
+	scoreText.setText('Score: ' + LK.getScore());
+	healthText.setText('Health: ' + spaceship.health);
+	// Auto-shoot
+	spaceship.shoot();
+	// Spawn management
+	spawnTimer++;
+	waveTimer++;
+	if (waveTimer >= 1800) {
+		// Every 30 seconds increase difficulty
+		difficultyLevel++;
+		waveTimer = 0;
+	}
+	var spawnRate = Math.max(30, 90 - difficultyLevel * 5);
+	if (spawnTimer >= spawnRate) {
+		if (Math.random() < 0.7) {
+			spawnEnemy();
+		}
+		if (Math.random() < 0.4) {
+			spawnAsteroid();
+		}
+		if (Math.random() < 0.05) {
+			spawnPowerUp();
+		}
+		spawnTimer = 0;
+	}
+	// Check spaceship movement for collision detection
+	var spaceshipMoved = spaceship.x !== lastSpaceshipX || spaceship.y !== lastSpaceshipY;
+	lastSpaceshipX = spaceship.x;
+	lastSpaceshipY = spaceship.y;
+	// Update and check bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var bullet = bullets[i];
+		if (bullet.y < -20) {
+			bullet.destroy();
+			bullets.splice(i, 1);
+			continue;
+		}
+		// Check bullet-enemy collisions
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var enemy = enemies[j];
+			if (bullet.intersects(enemy)) {
+				bullet.destroy();
+				bullets.splice(i, 1);
+				enemy.takeDamage();
+				if (enemy.health <= 0) {
+					enemies.splice(j, 1);
+				}
+				break;
+			}
+		}
+	}
+	// Update and check enemy bullets
+	for (var i = enemyBullets.length - 1; i >= 0; i--) {
+		var bullet = enemyBullets[i];
+		if (bullet.y > 2752) {
+			bullet.destroy();
+			enemyBullets.splice(i, 1);
+			continue;
+		}
+		// Check enemy bullet-spaceship collision
+		if (bullet.intersects(spaceship)) {
+			bullet.destroy();
+			enemyBullets.splice(i, 1);
+			spaceship.takeDamage();
+		}
+	}
+	// Update and check enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		if (enemy.y > 2800) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Check enemy-spaceship collision
+		if (enemy.intersects(spaceship)) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			spaceship.takeDamage();
+		}
+	}
+	// Update and check asteroids
+	for (var i = asteroids.length - 1; i >= 0; i--) {
+		var asteroid = asteroids[i];
+		if (asteroid.y > 2800) {
+			asteroid.destroy();
+			asteroids.splice(i, 1);
+			continue;
+		}
+		// Check asteroid-spaceship collision
+		if (asteroid.intersects(spaceship)) {
+			asteroid.destroy();
+			asteroids.splice(i, 1);
+			spaceship.takeDamage();
+		}
+		// Check bullet-asteroid collisions
+		for (var j = bullets.length - 1; j >= 0; j--) {
+			var bullet = bullets[j];
+			if (bullet.intersects(asteroid)) {
+				bullet.destroy();
+				bullets.splice(j, 1);
+				asteroid.destroy();
+				asteroids.splice(i, 1);
+				LK.setScore(LK.getScore() + 5);
+				break;
+			}
+		}
+	}
+	// Update and check power-ups
+	for (var i = powerUps.length - 1; i >= 0; i--) {
+		var powerUp = powerUps[i];
+		if (powerUp.y > 2800) {
+			powerUp.destroy();
+			powerUps.splice(i, 1);
+			continue;
+		}
+		// Check power-up collection
+		if (powerUp.intersects(spaceship)) {
+			powerUp.destroy();
+			powerUps.splice(i, 1);
+			spaceship.applyPowerUp();
+			LK.setScore(LK.getScore() + 25);
+		}
+	}
+};
+// Start background music
+LK.playMusic('spaceMusic');
\ No newline at end of file