===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,367 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Boss = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('boss', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1;
+	self.hp = 10;
+	self.shootTimer = 0;
+	self.shootInterval = 30;
+	self.moveDirection = 1;
+	self.update = function () {
+		self.y += self.speed;
+		self.x += self.moveDirection * 2;
+		if (self.x <= 100 || self.x >= 1948) {
+			self.moveDirection *= -1;
+		}
+		self.shootTimer++;
+		if (self.shootTimer >= self.shootInterval) {
+			self.shootTimer = 0;
+			var bullet = new EnemyBullet();
+			bullet.x = self.x;
+			bullet.y = self.y + 60;
+			enemyBullets.push(bullet);
+			game.addChild(bullet);
+		}
+	};
+	return self;
+});
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3;
+	self.hp = 1;
+	self.shootTimer = 0;
+	self.shootInterval = 120;
+	self.update = function () {
+		self.y += self.speed;
+		self.shootTimer++;
+		if (self.shootTimer >= self.shootInterval && Math.random() < 0.01) {
+			self.shootTimer = 0;
+			var bullet = new EnemyBullet();
+			bullet.x = self.x;
+			bullet.y = self.y + 30;
+			enemyBullets.push(bullet);
+			game.addChild(bullet);
+		}
+	};
+	return self;
+});
+var EnemyBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = 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 graphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.hp = 3;
+	self.shootTimer = 0;
+	self.shootInterval = 15;
+	self.powerUpTimer = 0;
+	self.rapidFire = false;
+	self.update = function () {
+		self.shootTimer++;
+		var currentShootInterval = self.rapidFire ? 5 : self.shootInterval;
+		if (self.shootTimer >= currentShootInterval) {
+			self.shootTimer = 0;
+			var bullet = new PlayerBullet();
+			bullet.x = self.x;
+			bullet.y = self.y - 40;
+			playerBullets.push(bullet);
+			game.addChild(bullet);
+			LK.getSound('shoot').play();
+		}
+		if (self.rapidFire) {
+			self.powerUpTimer--;
+			if (self.powerUpTimer <= 0) {
+				self.rapidFire = false;
+			}
+		}
+	};
+	return self;
+});
+var PlayerBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = 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 graphics = self.attachAsset('powerUp', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 4;
+	self.type = 'rapidFire'; // rapidFire, shield
+	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: 0x000033
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var player;
+var playerBullets = [];
+var enemies = [];
+var enemyBullets = [];
+var powerUps = [];
+var bosses = [];
+var enemySpawnTimer = 0;
+var enemySpawnInterval = 60;
+var powerUpSpawnTimer = 0;
+var bossSpawnScore = 500;
+var nextBossScore = bossSpawnScore;
+var dragNode = null;
+var waveLevel = 1;
+// UI Elements
+var scoreTxt = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0, 0);
+scoreTxt.x = 120;
+scoreTxt.y = 50;
+LK.gui.topLeft.addChild(scoreTxt);
+var hpTxt = new Text2('HP: 3', {
+	size: 60,
+	fill: 0xFF0000
+});
+hpTxt.anchor.set(1, 0);
+hpTxt.x = -50;
+hpTxt.y = 50;
+LK.gui.topRight.addChild(hpTxt);
+// Initialize player
+player = new Player();
+player.x = 1024;
+player.y = 2400;
+game.addChild(player);
+// Event handlers
+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;
+};
+// Main game loop
+game.update = function () {
+	// Update score display
+	scoreTxt.setText('Score: ' + LK.getScore());
+	hpTxt.setText('HP: ' + player.hp);
+	// Spawn enemies
+	enemySpawnTimer++;
+	var currentSpawnInterval = Math.max(20, enemySpawnInterval - Math.floor(LK.getScore() / 100) * 5);
+	if (enemySpawnTimer >= currentSpawnInterval) {
+		enemySpawnTimer = 0;
+		var enemy = new Enemy();
+		enemy.x = Math.random() * 1800 + 124;
+		enemy.y = -50;
+		enemy.speed = 2 + Math.floor(LK.getScore() / 200);
+		enemies.push(enemy);
+		game.addChild(enemy);
+	}
+	// Spawn power-ups occasionally
+	powerUpSpawnTimer++;
+	if (powerUpSpawnTimer >= 900 && Math.random() < 0.02) {
+		powerUpSpawnTimer = 0;
+		var powerUp = new PowerUp();
+		powerUp.x = Math.random() * 1800 + 124;
+		powerUp.y = -50;
+		powerUps.push(powerUp);
+		game.addChild(powerUp);
+	}
+	// Spawn boss at score milestones
+	if (LK.getScore() >= nextBossScore && bosses.length === 0) {
+		var boss = new Boss();
+		boss.x = 1024;
+		boss.y = -100;
+		bosses.push(boss);
+		game.addChild(boss);
+		nextBossScore += bossSpawnScore;
+	}
+	// Handle player bullets
+	for (var i = playerBullets.length - 1; i >= 0; i--) {
+		var bullet = playerBullets[i];
+		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
+		// Remove bullets that go off screen
+		if (bullet.lastY >= -50 && bullet.y < -50) {
+			bullet.destroy();
+			playerBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with enemies
+		var hitEnemy = false;
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			if (bullet.intersects(enemies[j])) {
+				enemies[j].hp--;
+				if (enemies[j].hp <= 0) {
+					LK.setScore(LK.getScore() + 10);
+					LK.getSound('enemyHit').play();
+					enemies[j].destroy();
+					enemies.splice(j, 1);
+				}
+				bullet.destroy();
+				playerBullets.splice(i, 1);
+				hitEnemy = true;
+				break;
+			}
+		}
+		if (hitEnemy) continue;
+		// Check collision with bosses
+		for (var k = bosses.length - 1; k >= 0; k--) {
+			if (bullet.intersects(bosses[k])) {
+				bosses[k].hp--;
+				if (bosses[k].hp <= 0) {
+					LK.setScore(LK.getScore() + 100);
+					LK.getSound('enemyHit').play();
+					bosses[k].destroy();
+					bosses.splice(k, 1);
+				}
+				bullet.destroy();
+				playerBullets.splice(i, 1);
+				break;
+			}
+		}
+		bullet.lastY = bullet.y;
+	}
+	// Handle enemy bullets
+	for (var i = enemyBullets.length - 1; i >= 0; i--) {
+		var bullet = enemyBullets[i];
+		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
+		// Remove bullets that go off screen
+		if (bullet.lastY <= 2782 && bullet.y > 2782) {
+			bullet.destroy();
+			enemyBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (bullet.intersects(player)) {
+			player.hp--;
+			LK.getSound('playerHit').play();
+			LK.effects.flashObject(player, 0xff0000, 500);
+			if (player.hp <= 0) {
+				LK.showGameOver();
+				return;
+			}
+			bullet.destroy();
+			enemyBullets.splice(i, 1);
+		}
+		bullet.lastY = bullet.y;
+	}
+	// Handle enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		if (enemy.lastY === undefined) enemy.lastY = enemy.y;
+		// Remove enemies that go off screen
+		if (enemy.lastY <= 2782 && enemy.y > 2782) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (enemy.intersects(player)) {
+			player.hp--;
+			LK.getSound('playerHit').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			if (player.hp <= 0) {
+				LK.showGameOver();
+				return;
+			}
+			enemy.destroy();
+			enemies.splice(i, 1);
+		}
+		enemy.lastY = enemy.y;
+	}
+	// Handle bosses
+	for (var i = bosses.length - 1; i >= 0; i--) {
+		var boss = bosses[i];
+		if (boss.lastY === undefined) boss.lastY = boss.y;
+		// Remove bosses that go off screen
+		if (boss.lastY <= 2782 && boss.y > 2782) {
+			boss.destroy();
+			bosses.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (boss.intersects(player)) {
+			player.hp--;
+			LK.getSound('playerHit').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			if (player.hp <= 0) {
+				LK.showGameOver();
+				return;
+			}
+		}
+		boss.lastY = boss.y;
+	}
+	// Handle power-ups
+	for (var i = powerUps.length - 1; i >= 0; i--) {
+		var powerUp = powerUps[i];
+		if (powerUp.lastY === undefined) powerUp.lastY = powerUp.y;
+		// Remove power-ups that go off screen
+		if (powerUp.lastY <= 2782 && powerUp.y > 2782) {
+			powerUp.destroy();
+			powerUps.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (powerUp.intersects(player)) {
+			LK.getSound('powerUpSound').play();
+			if (powerUp.type === 'rapidFire') {
+				player.rapidFire = true;
+				player.powerUpTimer = 600; // 10 seconds at 60fps
+			}
+			powerUp.destroy();
+			powerUps.splice(i, 1);
+		}
+		powerUp.lastY = powerUp.y;
+	}
+};
\ No newline at end of file