===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,371 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Enemy Bullet
+var EnemyBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bullet = self.attachAsset('enemyBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 18;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Enemy Ship
+var EnemyShip = Container.expand(function () {
+	var self = Container.call(this);
+	var ship = self.attachAsset('enemyShip', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = ship.width;
+	self.height = ship.height;
+	self.speed = 4 + Math.random() * 2;
+	self.shootCooldown = 60 + Math.floor(Math.random() * 60);
+	self.shootTimer = Math.floor(Math.random() * self.shootCooldown);
+	self.hp = 1;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.shootTimer > 0) {
+			self.shootTimer--;
+		}
+	};
+	return self;
+});
+// Player Bullet
+var PlayerBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bullet = self.attachAsset('playerBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -32;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Player Ship
+var PlayerShip = Container.expand(function () {
+	var self = Container.call(this);
+	var ship = self.attachAsset('playerShip', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = ship.width;
+	self.height = ship.height;
+	self.canShoot = true;
+	self.shootCooldown = 18; // frames between shots
+	self.shootTimer = 0;
+	self.lives = 1; // For MVP, 1 hit = game over
+	self.poweredUp = false;
+	self.powerupTimer = 0;
+	// Power-up effect
+	self.setPowerup = function (duration) {
+		self.poweredUp = true;
+		self.powerupTimer = duration;
+		ship.tint = 0x00ff99;
+	};
+	self.clearPowerup = function () {
+		self.poweredUp = false;
+		self.powerupTimer = 0;
+		ship.tint = 0xffffff;
+	};
+	self.update = function () {
+		if (self.shootTimer > 0) self.shootTimer--;
+		if (self.poweredUp) {
+			self.powerupTimer--;
+			if (self.powerupTimer <= 0) {
+				self.clearPowerup();
+			}
+		}
+	};
+	return self;
+});
+// Powerup
+var Powerup = Container.expand(function () {
+	var self = Container.call(this);
+	var p = self.attachAsset('powerup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
+	backgroundColor: 0x000010
+});
+
+/**** 
+* Game Code
+****/ 
+// Music
+// Sounds
+// Explosion effect (for flash)
+// Power-up
+// Enemy bullet
+// Enemy ship
+// Player bullet
+// Spaceship (player)
+// Play background music
+LK.playMusic('galacticMusic');
+// Score display
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Game variables
+var player;
+var playerBullets = [];
+var enemies = [];
+var enemyBullets = [];
+var powerups = [];
+var dragNode = null;
+var lastPlayerHit = false;
+var spawnTimer = 0;
+var powerupSpawnTimer = 0;
+// Helper: Clamp value
+function clamp(val, min, max) {
+	return Math.max(min, Math.min(max, val));
+}
+// Initialize player
+player = new PlayerShip();
+player.x = 2048 / 2;
+player.y = 2732 - 220;
+game.addChild(player);
+// Move handler (drag player ship)
+function handleMove(x, y, obj) {
+	if (dragNode === player) {
+		// Clamp player within screen bounds
+		var halfW = player.width / 2;
+		var halfH = player.height / 2;
+		player.x = clamp(x, halfW, 2048 - halfW);
+		player.y = clamp(y, 2048, 2732 - halfH); // Only allow movement in lower 700px
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	// Only start drag if touch is on player
+	var local = player.toLocal(game.toGlobal({
+		x: x,
+		y: y
+	}));
+	if (local.x >= -player.width / 2 && local.x <= player.width / 2 && local.y >= -player.height / 2 && local.y <= player.height / 2) {
+		dragNode = player;
+		handleMove(x, y, obj);
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Fire player bullet
+function firePlayerBullet() {
+	if (player.shootTimer === 0) {
+		var bullet = new PlayerBullet();
+		bullet.x = player.x;
+		bullet.y = player.y - player.height / 2 - 10;
+		playerBullets.push(bullet);
+		game.addChild(bullet);
+		LK.getSound('shoot').play();
+		player.shootTimer = player.poweredUp ? 6 : player.shootCooldown;
+		// Power-up: triple shot
+		if (player.poweredUp) {
+			for (var i = -1; i <= 1; i += 2) {
+				var b = new PlayerBullet();
+				b.x = player.x + i * 50;
+				b.y = player.y - player.height / 2 - 10;
+				b.rotation = i * 0.18;
+				b.update = function (angle) {
+					return function () {
+						this.y += this.speed * Math.cos(angle);
+						this.x += this.speed * Math.sin(angle);
+					};
+				}(i * 0.18);
+				playerBullets.push(b);
+				game.addChild(b);
+			}
+		}
+	}
+}
+// Spawn enemy
+function spawnEnemy() {
+	var enemy = new EnemyShip();
+	enemy.x = 180 + Math.random() * (2048 - 360);
+	enemy.y = -enemy.height / 2 - 10;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+// Spawn powerup
+function spawnPowerup() {
+	var p = new Powerup();
+	p.x = 180 + Math.random() * (2048 - 360);
+	p.y = -p.height / 2 - 10;
+	powerups.push(p);
+	game.addChild(p);
+}
+// Main update loop
+game.update = function () {
+	// Player update
+	player.update();
+	// Player auto-fire
+	if (LK.ticks % 2 === 0) {
+		firePlayerBullet();
+	}
+	// Update player bullets
+	for (var i = playerBullets.length - 1; i >= 0; i--) {
+		var b = playerBullets[i];
+		b.update();
+		// Remove if off screen
+		if (b.y < -80) {
+			b.destroy();
+			playerBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with enemies
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var e = enemies[j];
+			if (b.intersects(e)) {
+				e.hp--;
+				if (e.hp <= 0) {
+					// Explosion effect
+					LK.effects.flashObject(e, 0xffffff, 200);
+					LK.getSound('explosion').play();
+					LK.setScore(LK.getScore() + 10);
+					scoreTxt.setText(LK.getScore());
+					e.destroy();
+					enemies.splice(j, 1);
+				}
+				b.destroy();
+				playerBullets.splice(i, 1);
+				break;
+			}
+		}
+	}
+	// Update enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var e = enemies[i];
+		e.update();
+		// Remove if off screen
+		if (e.y > 2732 + e.height) {
+			e.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Enemy shooting
+		if (e.shootTimer === 0) {
+			var eb = new EnemyBullet();
+			eb.x = e.x;
+			eb.y = e.y + e.height / 2 + 10;
+			enemyBullets.push(eb);
+			game.addChild(eb);
+			LK.getSound('enemyShoot').play();
+			e.shootTimer = e.shootCooldown;
+		}
+		// Check collision with player
+		if (e.intersects(player)) {
+			if (!lastPlayerHit) {
+				LK.effects.flashScreen(0xff0000, 800);
+				LK.getSound('explosion').play();
+				LK.showGameOver();
+				lastPlayerHit = true;
+			}
+		}
+	}
+	// Update enemy bullets
+	for (var i = enemyBullets.length - 1; i >= 0; i--) {
+		var eb = enemyBullets[i];
+		eb.update();
+		if (eb.y > 2732 + 60) {
+			eb.destroy();
+			enemyBullets.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (eb.intersects(player)) {
+			if (!lastPlayerHit) {
+				LK.effects.flashScreen(0xff0000, 800);
+				LK.getSound('explosion').play();
+				LK.showGameOver();
+				lastPlayerHit = true;
+			}
+		}
+	}
+	// Update powerups
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		var p = powerups[i];
+		p.update();
+		if (p.y > 2732 + 60) {
+			p.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		// Check collision with player
+		if (p.intersects(player)) {
+			player.setPowerup(360); // 6 seconds at 60fps
+			LK.getSound('powerup').play();
+			p.destroy();
+			powerups.splice(i, 1);
+		}
+	}
+	// Enemy spawn logic
+	spawnTimer--;
+	if (spawnTimer <= 0) {
+		spawnEnemy();
+		spawnTimer = 36 + Math.floor(Math.random() * 24); // spawn every 1s approx
+	}
+	// Powerup spawn logic
+	powerupSpawnTimer--;
+	if (powerupSpawnTimer <= 0) {
+		if (Math.random() < 0.18) {
+			spawnPowerup();
+		}
+		powerupSpawnTimer = 360 + Math.floor(Math.random() * 240); // every 6-10s
+	}
+	// Reset lastPlayerHit if player is alive
+	if (!player.destroyed) {
+		lastPlayerHit = false;
+	}
+};
+// Reset game state on game over
+LK.on('gameover', function () {
+	// Clean up all objects
+	for (var i = 0; i < playerBullets.length; i++) playerBullets[i].destroy();
+	for (var i = 0; i < enemies.length; i++) enemies[i].destroy();
+	for (var i = 0; i < enemyBullets.length; i++) enemyBullets[i].destroy();
+	for (var i = 0; i < powerups.length; i++) powerups[i].destroy();
+	playerBullets = [];
+	enemies = [];
+	enemyBullets = [];
+	powerups = [];
+	lastPlayerHit = false;
+	// Music will be handled by LK
+});
+// Reset game state on win (not used in MVP, but for future)
+LK.on('youwin', function () {
+	for (var i = 0; i < playerBullets.length; i++) playerBullets[i].destroy();
+	for (var i = 0; i < enemies.length; i++) enemies[i].destroy();
+	for (var i = 0; i < enemyBullets.length; i++) enemyBullets[i].destroy();
+	for (var i = 0; i < powerups.length; i++) powerups[i].destroy();
+	playerBullets = [];
+	enemies = [];
+	enemyBullets = [];
+	powerups = [];
+	lastPlayerHit = false;
 });
\ No newline at end of file