/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	totalKills: 0
});

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 20;
	self.dirX = 0;
	self.dirY = 0;
	self.damage = 10;
	self.update = function () {
		self.x += self.dirX * self.speed;
		self.y += self.dirY * self.speed;
	};
	return self;
});
var Powerup = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'health';
	var assetId;
	switch (self.type) {
		case 'health':
			assetId = 'healthPack';
			break;
		case 'ammo':
			assetId = 'ammoPack';
			break;
		case 'rapidFire':
			assetId = 'rapidFirePowerup';
			break;
		case 'damageBoost':
			assetId = 'damageBoostPowerup';
			break;
	}
	var powerupGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifespan = 300; // 5 seconds at 60fps
	self.update = function () {
		self.lifespan--;
		// Make powerup blink when about to expire
		if (self.lifespan < 60) {
			self.visible = LK.ticks % 10 < 5;
		}
	};
	return self;
});
var Survivor = Container.expand(function () {
	var self = Container.call(this);
	var survivorGraphics = self.attachAsset('survivor', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.maxHealth = 100;
	self.ammo = 30;
	self.maxAmmo = 30;
	self.speed = 10;
	self.fireRate = 10; // Ticks between shots
	self.fireCooldown = 0;
	self.damageMultiplier = 1;
	self.rapidFireTimer = 0;
	self.damageBoostTimer = 0;
	self.move = function (direction) {
		if (direction.x) {
			self.x += direction.x * self.speed;
		}
		if (direction.y) {
			self.y += direction.y * self.speed;
		}
		// Keep player within game bounds
		if (self.x < 50) {
			self.x = 50;
		}
		if (self.x > 2048 - 50) {
			self.x = 2048 - 50;
		}
		if (self.y < 50) {
			self.y = 50;
		}
		if (self.y > 2732 - 50) {
			self.y = 2732 - 50;
		}
	};
	self.shoot = function (targetX, targetY) {
		if (self.ammo <= 0 || self.fireCooldown > 0) {
			return null;
		}
		self.ammo--;
		self.fireCooldown = self.rapidFireTimer > 0 ? Math.floor(self.fireRate / 2) : self.fireRate;
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		// Calculate direction vector
		var dirX = targetX - self.x;
		var dirY = targetY - self.y;
		// Normalize direction
		var length = Math.sqrt(dirX * dirX + dirY * dirY);
		bullet.dirX = dirX / length;
		bullet.dirY = dirY / length;
		// Set damage based on player's current damage multiplier
		bullet.damage = 10 * self.damageMultiplier;
		LK.getSound('shoot').play();
		return bullet;
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.getSound('playerHit').play();
		// Flash player red when taking damage
		LK.effects.flashObject(self, 0xff0000, 300);
		if (self.health <= 0) {
			self.health = 0;
			return true; // Player is dead
		}
		return false;
	};
	self.collectPowerup = function (type) {
		LK.getSound('powerup').play();
		switch (type) {
			case 'health':
				self.health = Math.min(self.health + 25, self.maxHealth);
				break;
			case 'ammo':
				self.ammo = Math.min(self.ammo + 15, self.maxAmmo);
				break;
			case 'rapidFire':
				self.rapidFireTimer = 300; // 5 seconds at 60fps
				LK.effects.flashObject(self, 0x9b59b6, 300);
				break;
			case 'damageBoost':
				self.damageMultiplier = 2;
				self.damageBoostTimer = 300; // 5 seconds at 60fps
				LK.effects.flashObject(self, 0xe67e22, 300);
				break;
		}
	};
	self.update = function () {
		if (self.fireCooldown > 0) {
			self.fireCooldown--;
		}
		if (self.rapidFireTimer > 0) {
			self.rapidFireTimer--;
			if (self.rapidFireTimer === 0) {
				// End rapid fire effect
			}
		}
		if (self.damageBoostTimer > 0) {
			self.damageBoostTimer--;
			if (self.damageBoostTimer === 0) {
				self.damageMultiplier = 1;
			}
		}
	};
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 30;
	self.speed = 3;
	self.damage = 10;
	self.attackCooldown = 0;
	self.attackRate = 30; // Ticks between attacks
	self.update = function () {
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		// Movement is handled in the game update function
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.getSound('zombieHit').play();
		// Flash zombie green when taking damage
		LK.effects.flashObject(self, 0xff0000, 200);
		if (self.health <= 0) {
			return true; // Zombie is dead
		}
		return false;
	};
	self.canAttack = function () {
		return self.attackCooldown === 0;
	};
	self.attack = function () {
		self.attackCooldown = self.attackRate;
		return self.damage;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a1a
});

/**** 
* Game Code
****/ 
// Game state variables
var player;
var zombies = [];
var bullets = [];
var powerups = [];
var direction = {
	x: 0,
	y: 0
};
var targetX = 0;
var targetY = 0;
var isShooting = false;
var wave = 1;
var zombiesKilled = 0;
var waveZombies = 5; // Starting zombies per wave
var score = 0;
var gameOver = false;
var powerupSpawnChance = 0.01; // 1% chance per tick to spawn a powerup
// UI elements
var scoreText;
var waveText;
var healthBar;
var ammoText;
var gameOverText;
// Initialize game
function initGame() {
	// Create player
	player = new Survivor();
	player.x = 2048 / 2;
	player.y = 2732 / 2;
	game.addChild(player);
	// Initialize UI elements
	createUI();
	// Start first wave
	startWave(wave);
	// Start background music
	LK.playMusic('gameMusic');
}
function createUI() {
	// Score text
	scoreText = new Text2('Score: 0', {
		size: 60,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(0, 0);
	scoreText.x = 50;
	scoreText.y = 50;
	LK.gui.addChild(scoreText);
	// Wave text
	waveText = new Text2('Wave: 1', {
		size: 60,
		fill: 0xFFFFFF
	});
	waveText.anchor.set(1, 0);
	waveText.x = 2048 - 50;
	waveText.y = 50;
	LK.gui.addChild(waveText);
	// Health bar
	healthBar = new Container();
	var healthBarBg = LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0,
		width: 400,
		height: 30,
		tint: 0x333333
	});
	var healthBarFill = LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0,
		width: 400,
		height: 30,
		tint: 0xe74c3c
	});
	healthBar.addChild(healthBarBg);
	healthBar.addChild(healthBarFill);
	healthBar.fillBar = healthBarFill;
	healthBar.x = 50;
	healthBar.y = 120;
	LK.gui.addChild(healthBar);
	// Ammo text
	ammoText = new Text2('Ammo: 30/30', {
		size: 60,
		fill: 0xFFFFFF
	});
	ammoText.anchor.set(0, 0);
	ammoText.x = 50;
	ammoText.y = 160;
	LK.gui.addChild(ammoText);
	// Shoot button
	var shootButton = new Container();
	var shootButtonBg = LK.getAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 150,
		height: 150,
		tint: 0x3498db
	});
	shootButton.addChild(shootButtonBg);
	shootButton.x = 2048 - 100;
	shootButton.y = 2732 - 100;
	shootButton.interactive = true;
	shootButton.on('down', function () {
		isShooting = true;
	});
	shootButton.on('up', function () {
		isShooting = false;
	});
	LK.gui.addChild(shootButton);
}
function startWave(waveNumber) {
	wave = waveNumber;
	waveZombies = 5 + (wave - 1) * 3;
	waveText.setText('Wave: ' + wave);
	// Spawn initial zombies
	for (var i = 0; i < Math.min(waveZombies, 10); i++) {
		spawnZombie();
	}
}
function spawnZombie() {
	var zombie = new Zombie();
	// Determine spawn location (outside the screen)
	var side = Math.floor(Math.random() * 4); // 0: top, 1: right, 2: bottom, 3: left
	switch (side) {
		case 0:
			// Top
			zombie.x = Math.random() * 2048;
			zombie.y = -100;
			break;
		case 1:
			// Right
			zombie.x = 2048 + 100;
			zombie.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			zombie.x = Math.random() * 2048;
			zombie.y = 2732 + 100;
			break;
		case 3:
			// Left
			zombie.x = -100;
			zombie.y = Math.random() * 2732;
			break;
	}
	// Adjust zombie difficulty based on wave
	zombie.health = 30 + (wave - 1) * 10;
	zombie.speed = 3 + (wave - 1) * 0.2;
	if (wave > 5) {
		zombie.damage = 10 + (wave - 5) * 2;
	}
	game.addChild(zombie);
	zombies.push(zombie);
}
function spawnPowerup() {
	// Determine random position on screen
	var x = 100 + Math.random() * (2048 - 200);
	var y = 100 + Math.random() * (2732 - 200);
	// Determine powerup type
	var types = ['health', 'ammo', 'rapidFire', 'damageBoost'];
	var type = types[Math.floor(Math.random() * types.length)];
	var powerup = new Powerup(type);
	powerup.x = x;
	powerup.y = y;
	game.addChild(powerup);
	powerups.push(powerup);
}
function updateUI() {
	// Update score
	scoreText.setText('Score: ' + score);
	// Update health bar
	var healthPercent = player.health / player.maxHealth;
	healthBar.fillBar.width = 400 * healthPercent;
	// Update ammo text
	ammoText.setText('Ammo: ' + player.ammo + '/' + player.maxAmmo);
}
// Mouse/Touch input handlers
game.down = function (x, y, obj) {
	targetX = x;
	targetY = y;
	isShooting = true;
};
game.move = function (x, y, obj) {
	targetX = x;
	targetY = y;
};
game.up = function (x, y, obj) {
	isShooting = false;
};
// Main game update loop
game.update = function () {
	if (gameOver) {
		return;
	}
	// Update player
	player.update();
	// Handle player movement based on touch position
	if (isShooting) {
		// Move player toward touch point, but not all the way
		var dx = targetX - player.x;
		var dy = targetY - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 200) {
			// Only move if touch is far enough away
			direction.x = dx / distance;
			direction.y = dy / distance;
			player.move(direction);
		}
		// Try to shoot
		if (player.fireCooldown === 0 && player.ammo > 0) {
			var bullet = player.shoot(targetX, targetY);
			if (bullet) {
				game.addChild(bullet);
				bullets.push(bullet);
			}
		}
	}
	// Update zombies
	for (var i = zombies.length - 1; i >= 0; i--) {
		var zombie = zombies[i];
		zombie.update();
		// Move zombie towards player
		var dx = player.x - zombie.x;
		var dy = player.y - zombie.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			zombie.x += dx / distance * zombie.speed;
			zombie.y += dy / distance * zombie.speed;
		}
		// Check for collision with player
		if (zombie.intersects(player)) {
			if (zombie.canAttack()) {
				var damage = zombie.attack();
				var playerDead = player.takeDamage(damage);
				if (playerDead) {
					handleGameOver();
					return;
				}
			}
		}
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		bullet.update();
		// Check if bullet is off screen
		if (bullet.x < -50 || bullet.x > 2048 + 50 || bullet.y < -50 || bullet.y > 2732 + 50) {
			game.removeChild(bullet);
			bullets.splice(i, 1);
			continue;
		}
		// Check for collisions with zombies
		var hitZombie = false;
		for (var j = zombies.length - 1; j >= 0; j--) {
			var zombie = zombies[j];
			if (bullet.intersects(zombie)) {
				hitZombie = true;
				var zombieDead = zombie.takeDamage(bullet.damage);
				if (zombieDead) {
					game.removeChild(zombie);
					zombies.splice(j, 1);
					zombiesKilled++;
					score += 100 * wave;
					// Spawn more zombies if needed for the current wave
					if (zombies.length + zombiesKilled < waveZombies) {
						spawnZombie();
					}
					// Check if wave is complete
					if (zombiesKilled >= waveZombies && zombies.length === 0) {
						zombiesKilled = 0;
						wave++;
						startWave(wave);
						// Give player ammo bonus between waves
						player.ammo = Math.min(player.ammo + 15, player.maxAmmo);
						// Give player health bonus between waves
						player.health = Math.min(player.health + 20, player.maxHealth);
					}
				}
				break;
			}
		}
		if (hitZombie) {
			game.removeChild(bullet);
			bullets.splice(i, 1);
		}
	}
	// Update powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		powerup.update();
		// Check if powerup expired
		if (powerup.lifespan <= 0) {
			game.removeChild(powerup);
			powerups.splice(i, 1);
			continue;
		}
		// Check for collision with player
		if (powerup.intersects(player)) {
			player.collectPowerup(powerup.type);
			game.removeChild(powerup);
			powerups.splice(i, 1);
		}
	}
	// Random chance to spawn powerup
	if (Math.random() < powerupSpawnChance && powerups.length < 3) {
		spawnPowerup();
	}
	// Update UI
	updateUI();
};
function handleGameOver() {
	gameOver = true;
	// Save high score
	if (score > storage.highScore) {
		storage.highScore = score;
	}
	// Update total kills
	storage.totalKills += zombiesKilled;
	// Show game over screen
	LK.showGameOver();
}
// Initialize the game
initGame();

===================================================================
--- original.js
+++ change.js
@@ -300,8 +300,28 @@
 	ammoText.anchor.set(0, 0);
 	ammoText.x = 50;
 	ammoText.y = 160;
 	LK.gui.addChild(ammoText);
+	// Shoot button
+	var shootButton = new Container();
+	var shootButtonBg = LK.getAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		width: 150,
+		height: 150,
+		tint: 0x3498db
+	});
+	shootButton.addChild(shootButtonBg);
+	shootButton.x = 2048 - 100;
+	shootButton.y = 2732 - 100;
+	shootButton.interactive = true;
+	shootButton.on('down', function () {
+		isShooting = true;
+	});
+	shootButton.on('up', function () {
+		isShooting = false;
+	});
+	LK.gui.addChild(shootButton);
 }
 function startWave(waveNumber) {
 	wave = waveNumber;
 	waveZombies = 5 + (wave - 1) * 3;