===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,271 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy1', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.health = 1;
+	self.shootTimer = 0;
+	self.shootDelay = Math.random() * 120 + 60;
+	self.update = function () {
+		self.y += self.speed;
+		self.shootTimer++;
+		if (self.shootTimer >= self.shootDelay) {
+			self.shootTimer = 0;
+			self.shootDelay = Math.random() * 120 + 60;
+			var bullet = new EnemyBullet();
+			bullet.x = self.x;
+			bullet.y = self.y + 30;
+			bullet.lastY = bullet.y;
+			enemyBullets.push(bullet);
+			game.addChild(bullet);
+		}
+	};
+	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 Player = Container.expand(function () {
+	var self = Container.call(this);
+	var shipGraphics = self.attachAsset('playerShip', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.fireRate = 15;
+	self.fireTimer = 0;
+	self.rapidFire = false;
+	self.rapidFireTimer = 0;
+	self.update = function () {
+		self.fireTimer++;
+		var currentFireRate = self.rapidFire ? 5 : self.fireRate;
+		if (self.fireTimer >= currentFireRate) {
+			self.fireTimer = 0;
+			var bullet = new PlayerBullet();
+			bullet.x = self.x;
+			bullet.y = self.y - 50;
+			bullet.lastY = bullet.y;
+			playerBullets.push(bullet);
+			game.addChild(bullet);
+			LK.getSound('shoot').play();
+		}
+		if (self.rapidFire) {
+			self.rapidFireTimer--;
+			if (self.rapidFireTimer <= 0) {
+				self.rapidFire = false;
+			}
+		}
+	};
+	self.activateRapidFire = function () {
+		self.rapidFire = true;
+		self.rapidFireTimer = 300;
+	};
+	return self;
+});
+var PlayerBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('playerBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -12;
+	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 = 2;
+	self.type = 'rapidFire';
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += 0.1;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x000011
+});
+
+/**** 
+* Game Code
+****/ 
+var player;
+var playerBullets = [];
+var enemies = [];
+var enemyBullets = [];
+var powerups = [];
+var waveTimer = 0;
+var difficultyLevel = 1;
+var enemySpawnRate = 180;
+var scoreTxt = new Text2('0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+var levelTxt = new Text2('Wave 1', {
+	size: 40,
+	fill: 0x00FF00
+});
+levelTxt.anchor.set(0, 0);
+levelTxt.x = 20;
+levelTxt.y = 20;
+LK.gui.topLeft.addChild(levelTxt);
+player = game.addChild(new Player());
+player.x = 1024;
+player.y = 2500;
+var dragNode = null;
+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 = player;
+	handleMove(x, y, obj);
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+function spawnEnemy() {
+	var enemy = new Enemy();
+	enemy.x = Math.random() * 1800 + 124;
+	enemy.y = -30;
+	enemy.lastY = enemy.y;
+	enemy.lastIntersecting = false;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+function spawnPowerUp(x, y) {
+	if (Math.random() < 0.3) {
+		var powerup = new PowerUp();
+		powerup.x = x;
+		powerup.y = y;
+		powerup.lastY = powerup.y;
+		powerup.lastIntersecting = false;
+		powerups.push(powerup);
+		game.addChild(powerup);
+	}
+}
+game.update = function () {
+	waveTimer++;
+	if (waveTimer % 1800 === 0) {
+		difficultyLevel++;
+		enemySpawnRate = Math.max(60, enemySpawnRate - 20);
+		levelTxt.setText('Wave ' + difficultyLevel);
+		LK.effects.flashScreen(0x0000ff, 500);
+	}
+	if (waveTimer % enemySpawnRate === 0) {
+		spawnEnemy();
+	}
+	for (var i = playerBullets.length - 1; i >= 0; i--) {
+		var bullet = playerBullets[i];
+		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
+		if (bullet.lastY >= -10 && bullet.y < -10) {
+			bullet.destroy();
+			playerBullets.splice(i, 1);
+			continue;
+		}
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var enemy = enemies[j];
+			if (bullet.intersects(enemy)) {
+				enemy.health--;
+				if (enemy.health <= 0) {
+					LK.setScore(LK.getScore() + 100);
+					scoreTxt.setText(LK.getScore());
+					LK.getSound('enemyHit').play();
+					spawnPowerUp(enemy.x, enemy.y);
+					enemy.destroy();
+					enemies.splice(j, 1);
+				}
+				bullet.destroy();
+				playerBullets.splice(i, 1);
+				break;
+			}
+		}
+		bullet.lastY = bullet.y;
+	}
+	for (var i = enemyBullets.length - 1; i >= 0; i--) {
+		var bullet = enemyBullets[i];
+		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
+		if (bullet.lastY <= 2742 && bullet.y > 2742) {
+			bullet.destroy();
+			enemyBullets.splice(i, 1);
+			continue;
+		}
+		if (bullet.intersects(player)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.getSound('playerHit').play();
+			LK.showGameOver();
+			return;
+		}
+		bullet.lastY = bullet.y;
+	}
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		if (enemy.lastY === undefined) enemy.lastY = enemy.y;
+		if (enemy.lastY <= 2742 && enemy.y > 2742) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		if (enemy.intersects(player)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.getSound('playerHit').play();
+			LK.showGameOver();
+			return;
+		}
+		enemy.lastY = enemy.y;
+	}
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		var powerup = powerups[i];
+		if (powerup.lastY === undefined) powerup.lastY = powerup.y;
+		if (powerup.lastIntersecting === undefined) powerup.lastIntersecting = false;
+		if (powerup.lastY <= 2742 && powerup.y > 2742) {
+			powerup.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		var currentIntersecting = powerup.intersects(player);
+		if (!powerup.lastIntersecting && currentIntersecting) {
+			player.activateRapidFire();
+			LK.getSound('powerupCollect').play();
+			LK.effects.flashObject(player, 0x00ffff, 500);
+			powerup.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		powerup.lastY = powerup.y;
+		powerup.lastIntersecting = currentIntersecting;
+	}
+};
\ No newline at end of file