===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,289 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var AmmoPickup = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('ammoPickup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.ammoAmount = 10;
+	self.lifetime = 600;
+	self.lastPlayerCollision = false;
+	self.update = function () {
+		self.lifetime--;
+		graphics.rotation += 0.05;
+		if (self.lifetime <= 0) {
+			self.remove();
+			return;
+		}
+		var currentCollision = self.intersects(player);
+		if (!self.lastPlayerCollision && currentCollision) {
+			player.addAmmo(self.ammoAmount);
+			LK.getSound('pickup').play();
+			self.remove();
+			return;
+		}
+		self.lastPlayerCollision = currentCollision;
+	};
+	self.remove = function () {
+		var index = ammoPickups.indexOf(self);
+		if (index > -1) {
+			ammoPickups.splice(index, 1);
+		}
+		self.destroy();
+	};
+	return self;
+});
+var Bullet = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.dx = 0;
+	self.dy = 0;
+	self.lifetime = 120;
+	self.update = function () {
+		self.x += self.dx * self.speed;
+		self.y += self.dy * self.speed;
+		self.lifetime--;
+		if (self.lifetime <= 0 || self.isOutOfBounds()) {
+			self.remove();
+			return;
+		}
+		for (var i = 0; i < zombies.length; i++) {
+			var zombie = zombies[i];
+			if (self.intersects(zombie)) {
+				zombie.takeDamage(1);
+				self.remove();
+				return;
+			}
+		}
+	};
+	self.isOutOfBounds = function () {
+		return self.x < 0 || self.x > 2048 || self.y < 0 || self.y > 2732;
+	};
+	self.remove = function () {
+		var index = bullets.indexOf(self);
+		if (index > -1) {
+			bullets.splice(index, 1);
+		}
+		self.destroy();
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 100;
+	self.maxHealth = 100;
+	self.ammo = 30;
+	self.maxAmmo = 30;
+	self.shootCooldown = 0;
+	self.update = function () {
+		if (self.shootCooldown > 0) {
+			self.shootCooldown--;
+		}
+	};
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health <= 0) {
+			self.health = 0;
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+		} else {
+			LK.effects.flashObject(self, 0xff0000, 200);
+		}
+	};
+	self.addAmmo = function (amount) {
+		self.ammo = Math.min(self.ammo + amount, self.maxAmmo);
+	};
+	self.canShoot = function () {
+		return self.ammo > 0 && self.shootCooldown <= 0;
+	};
+	self.shoot = function () {
+		if (self.canShoot()) {
+			self.ammo--;
+			self.shootCooldown = 10;
+			return true;
+		}
+		return false;
+	};
+	return self;
+});
+var Zombie = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('zombie', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1 + Math.random() * 0.5;
+	self.health = 1;
+	self.damage = 10;
+	self.lastPlayerCollision = false;
+	self.update = function () {
+		var dx = player.x - self.x;
+		var dy = player.y - self.y;
+		var distance = Math.sqrt(dx * dx + dy * dy);
+		if (distance > 0) {
+			self.x += dx / distance * self.speed;
+			self.y += dy / distance * self.speed;
+		}
+		var currentCollision = self.intersects(player);
+		if (!self.lastPlayerCollision && currentCollision) {
+			player.takeDamage(self.damage);
+			self.takeDamage(1);
+		}
+		self.lastPlayerCollision = currentCollision;
+	};
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health <= 0) {
+			LK.effects.flashObject(self, 0xffffff, 100);
+			LK.setScore(LK.getScore() + 10);
+			LK.getSound('zombieHit').play();
+			var index = zombies.indexOf(self);
+			if (index > -1) {
+				zombies.splice(index, 1);
+			}
+			self.destroy();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2d2d2d
+});
+
+/**** 
+* Game Code
+****/ 
+var arena = game.attachAsset('arena', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 2048 / 2,
+	y: 2732 / 2
+});
+var player = game.addChild(new Player());
+player.x = 2048 / 2;
+player.y = 2732 / 2;
+var zombies = [];
+var bullets = [];
+var ammoPickups = [];
+var waveNumber = 1;
+var zombiesInWave = 5;
+var zombiesSpawned = 0;
+var spawnTimer = 0;
+var pickupTimer = 0;
+var healthBar = new Text2('Health: 100', {
+	size: 60,
+	fill: 0xFF0000
+});
+healthBar.anchor.set(0, 0);
+LK.gui.topLeft.addChild(healthBar);
+var ammoDisplay = new Text2('Ammo: 30', {
+	size: 60,
+	fill: 0x00FF00
+});
+ammoDisplay.anchor.set(0, 0);
+ammoDisplay.y = 70;
+LK.gui.topLeft.addChild(ammoDisplay);
+var scoreDisplay = new Text2('Score: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreDisplay.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreDisplay);
+var waveDisplay = new Text2('Wave: 1', {
+	size: 60,
+	fill: 0xFFFF00
+});
+waveDisplay.anchor.set(1, 0);
+LK.gui.topRight.addChild(waveDisplay);
+function spawnZombie() {
+	var zombie = new Zombie();
+	var angle = Math.random() * Math.PI * 2;
+	var spawnRadius = 1000;
+	zombie.x = player.x + Math.cos(angle) * spawnRadius;
+	zombie.y = player.y + Math.sin(angle) * spawnRadius;
+	zombies.push(zombie);
+	game.addChild(zombie);
+}
+function spawnAmmoPickup() {
+	var pickup = new AmmoPickup();
+	var angle = Math.random() * Math.PI * 2;
+	var radius = 200 + Math.random() * 400;
+	pickup.x = player.x + Math.cos(angle) * radius;
+	pickup.y = player.y + Math.sin(angle) * radius;
+	ammoPickups.push(pickup);
+	game.addChild(pickup);
+}
+function shootBullet(targetX, targetY) {
+	if (player.shoot()) {
+		var bullet = new Bullet();
+		bullet.x = player.x;
+		bullet.y = player.y;
+		var dx = targetX - player.x;
+		var dy = targetY - player.y;
+		var distance = Math.sqrt(dx * dx + dy * dy);
+		if (distance > 0) {
+			bullet.dx = dx / distance;
+			bullet.dy = dy / distance;
+		}
+		bullets.push(bullet);
+		game.addChild(bullet);
+		LK.getSound('shoot').play();
+	}
+}
+game.down = function (x, y, obj) {
+	shootBullet(x, y);
+};
+game.update = function () {
+	spawnTimer++;
+	pickupTimer++;
+	if (zombiesSpawned < zombiesInWave && spawnTimer >= 60) {
+		spawnZombie();
+		zombiesSpawned++;
+		spawnTimer = 0;
+	}
+	if (zombiesSpawned >= zombiesInWave && zombies.length === 0) {
+		waveNumber++;
+		zombiesInWave = Math.min(5 + waveNumber * 2, 20);
+		zombiesSpawned = 0;
+		waveDisplay.setText('Wave: ' + waveNumber);
+		for (var i = 0; i < zombies.length; i++) {
+			zombies[i].speed += 0.1;
+		}
+	}
+	if (pickupTimer >= 900) {
+		spawnAmmoPickup();
+		pickupTimer = 0;
+	}
+	healthBar.setText('Health: ' + player.health);
+	ammoDisplay.setText('Ammo: ' + player.ammo);
+	scoreDisplay.setText('Score: ' + LK.getScore());
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		bullets[i].update();
+	}
+	for (var i = zombies.length - 1; i >= 0; i--) {
+		zombies[i].update();
+	}
+	for (var i = ammoPickups.length - 1; i >= 0; i--) {
+		ammoPickups[i].update();
+	}
+};
+LK.playMusic('bgmusic');
\ No newline at end of file