/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	level: 1
});

/**** 
* Classes
****/ 
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	// Random size asteroid
	var size = Math.random() * 0.7 + 0.7; // 0.7 to 1.4
	var asteroidGraphics = self.attachAsset('asteroid', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: size,
		scaleY: size
	});
	self.health = 30 * size;
	self.speed = 3 / size; // Bigger asteroids move slower
	self.rotationSpeed = (Math.random() - 0.5) * 0.05;
	self.points = Math.floor(50 * size);
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.effects.flashObject(self, 0x888888, 200);
		if (self.health <= 0) {
			self.onDestroyed();
		}
	};
	self.onDestroyed = function () {
		// Add points to score
		LK.setScore(LK.getScore() + self.points);
		// Create explosion
		var explosion = new Explosion(self.x, self.y, size);
		game.addChild(explosion);
		LK.getSound('explosion').play();
		// Remove from game
		var index = asteroids.indexOf(self);
		if (index > -1) {
			asteroids.splice(index, 1);
			self.destroy();
		}
	};
	self.update = function () {
		self.y += self.speed;
		asteroidGraphics.rotation += self.rotationSpeed;
		// Check if asteroid is off-screen
		if (self.y > 2732 + 100) {
			var index = asteroids.indexOf(self);
			if (index > -1) {
				asteroids.splice(index, 1);
				self.destroy();
			}
		}
	};
	return self;
});
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('boss', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 500;
	self.maxHealth = 500;
	self.speed = 2;
	self.points = 2000;
	self.active = false;
	self.phase = 1;
	self.directionX = 1;
	self.shootCooldown = 30;
	self.specialAttackCooldown = 300;
	// Health bar
	self.healthBar = self.attachAsset('healthBar', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -150
	});
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.effects.flashObject(self, 0xff0000, 200);
		// Update health bar scale
		self.healthBar.scaleX = Math.max(0, self.health / self.maxHealth);
		// Phase transition at 50% health
		if (self.health <= self.maxHealth / 2 && self.phase === 1) {
			self.phase = 2;
			self.speed = 4;
			LK.effects.flashObject(self, 0xff00ff, 1000); // Purple flash for phase transition
		}
		if (self.health <= 0) {
			self.onDestroyed();
		}
	};
	self.onDestroyed = function () {
		// Add points to score
		LK.setScore(LK.getScore() + self.points);
		// Create multiple explosions
		for (var i = 0; i < 8; i++) {
			var explosionX = self.x + (Math.random() * 300 - 150);
			var explosionY = self.y + (Math.random() * 200 - 100);
			var explosion = new Explosion(explosionX, explosionY, 2);
			game.addChild(explosion);
			// Stagger the explosions
			(function (delay) {
				LK.setTimeout(function () {
					LK.getSound('explosion').play();
				}, delay * 200);
			})(i);
		}
		// Complete level
		level++;
		if (level > storage.level) {
			storage.level = level;
		}
		// Check high score
		if (LK.getScore() > storage.highScore) {
			storage.highScore = LK.getScore();
		}
		// Show win screen
		LK.showYouWin();
		// Remove from game
		var index = bosses.indexOf(self);
		if (index > -1) {
			bosses.splice(index, 1);
			self.destroy();
		}
	};
	self.shoot = function () {
		// Basic attack - 3 bullets
		for (var i = -1; i <= 1; i++) {
			var bullet = new EnemyBullet();
			bullet.x = self.x + i * 80;
			bullet.y = self.y + 100;
			game.addChild(bullet);
			enemyBullets.push(bullet);
		}
		LK.getSound('enemyShoot').play();
	};
	self.specialAttack = function () {
		// Special attack based on phase
		if (self.phase === 1) {
			// Phase 1: Circle of 8 bullets
			for (var i = 0; i < 8; i++) {
				var angle = i / 8 * Math.PI * 2;
				var bullet = new EnemyBullet();
				bullet.x = self.x + Math.cos(angle) * 100;
				bullet.y = self.y + Math.sin(angle) * 100;
				bullet.directionX = Math.cos(angle);
				bullet.directionY = Math.sin(angle);
				game.addChild(bullet);
				enemyBullets.push(bullet);
			}
		} else {
			// Phase 2: Targeted volley at player
			for (var i = 0; i < 5; i++) {
				var bullet = new EnemyBullet();
				bullet.x = self.x;
				bullet.y = self.y + 100;
				// Target the player
				var dx = player.x - bullet.x;
				var dy = player.y - bullet.y;
				var dist = Math.sqrt(dx * dx + dy * dy);
				bullet.directionX = dx / dist;
				bullet.directionY = dy / dist;
				bullet.speed = 8 + i;
				game.addChild(bullet);
				enemyBullets.push(bullet);
				// Stagger the bullets slightly
				(function (b, delay) {
					LK.setTimeout(function () {
						game.addChild(b);
						enemyBullets.push(b);
					}, delay * 100);
				})(bullet, i);
			}
		}
		LK.getSound('enemyShoot').play();
	};
	self.update = function () {
		if (!self.active) {
			return;
		}
		// Movement
		self.x += self.speed * self.directionX;
		// Bounce at screen edges
		if (self.x < 300) {
			self.x = 300;
			self.directionX = 1;
		} else if (self.x > 2048 - 300) {
			self.x = 2048 - 300;
			self.directionX = -1;
		}
		// Regular attacks
		self.shootCooldown--;
		if (self.shootCooldown <= 0) {
			self.shoot();
			self.shootCooldown = self.phase === 1 ? 60 : 40;
		}
		// Special attacks
		self.specialAttackCooldown--;
		if (self.specialAttackCooldown <= 0) {
			self.specialAttack();
			self.specialAttackCooldown = 300;
		}
	};
	self.activate = function () {
		self.active = true;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 20;
	self.speed = 2;
	self.shootCooldown = Math.floor(Math.random() * 120) + 60;
	self.points = 100;
	self.movementPattern = "straight"; // Default movement pattern
	self.directionX = 0;
	self.directionChangeTimer = 0;
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.effects.flashObject(self, 0xff0000, 200);
		if (self.health <= 0) {
			self.onDestroyed();
		}
	};
	self.onDestroyed = function () {
		// Add points to score
		LK.setScore(LK.getScore() + self.points);
		// Create explosion
		var explosion = new Explosion(self.x, self.y, 1);
		game.addChild(explosion);
		LK.getSound('explosion').play();
		// Increment enemies defeated count for level progression
		enemiesDefeated++;
		// Check if should drop powerup (20% chance)
		if (Math.random() < 0.2) {
			var powerup = new Powerup();
			powerup.x = self.x;
			powerup.y = self.y;
			game.addChild(powerup);
			powerups.push(powerup);
		}
		// Remove from game
		var index = enemies.indexOf(self);
		if (index > -1) {
			enemies.splice(index, 1);
			self.destroy();
		}
	};
	self.shoot = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y + 50;
		game.addChild(bullet);
		enemyBullets.push(bullet);
		LK.getSound('enemyShoot').play();
	};
	self.setMovementPattern = function (pattern) {
		self.movementPattern = pattern;
		if (pattern === "zigzag") {
			self.directionX = Math.random() < 0.5 ? -1 : 1;
			self.speed = 3;
		} else if (pattern === "circle") {
			self.angle = Math.random() * Math.PI * 2;
			self.centerX = self.x;
			self.centerY = self.y;
			self.radius = 100;
			self.speed = 0.02;
		} else if (pattern === "sine") {
			self.startX = self.x;
			self.amplitude = 150;
			self.frequency = 0.01;
			self.angle = Math.random() * Math.PI * 2;
		}
	};
	self.update = function () {
		// Movement based on pattern
		if (self.movementPattern === "straight") {
			self.y += self.speed;
		} else if (self.movementPattern === "zigzag") {
			self.y += self.speed;
			self.x += self.speed * 2 * self.directionX;
			self.directionChangeTimer++;
			if (self.directionChangeTimer > 60) {
				self.directionX *= -1;
				self.directionChangeTimer = 0;
			}
			// Bounce off screen edges
			if (self.x < 50) {
				self.x = 50;
				self.directionX = 1;
			} else if (self.x > 2048 - 50) {
				self.x = 2048 - 50;
				self.directionX = -1;
			}
		} else if (self.movementPattern === "circle") {
			self.angle += self.speed;
			self.x = self.centerX + Math.cos(self.angle) * self.radius;
			self.y = self.centerY + Math.sin(self.angle) * self.radius + self.speed * 20;
		} else if (self.movementPattern === "sine") {
			self.y += self.speed * 2;
			self.angle += self.frequency;
			self.x = self.startX + Math.sin(self.angle) * self.amplitude;
		}
		// Shooting
		self.shootCooldown--;
		if (self.shootCooldown <= 0) {
			self.shoot();
			self.shootCooldown = Math.floor(Math.random() * 120) + 120;
		}
		// Remove if off screen
		if (self.y > 2732 + 100) {
			var index = enemies.indexOf(self);
			if (index > -1) {
				enemies.splice(index, 1);
				self.destroy();
			}
		}
	};
	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.damage = 10;
	self.directionX = 0;
	self.directionY = 1;
	self.update = function () {
		// Move based on direction
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Check if bullet is off-screen
		if (self.y > 2732 + 50 || self.y < -50 || self.x < -50 || self.x > 2048 + 50) {
			self.removeFromGame();
		}
	};
	self.removeFromGame = function () {
		var index = enemyBullets.indexOf(self);
		if (index > -1) {
			enemyBullets.splice(index, 1);
			self.destroy();
		}
	};
	return self;
});
var Explosion = Container.expand(function (x, y, size) {
	var self = Container.call(this);
	self.x = x;
	self.y = y;
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: size || 1,
		scaleY: size || 1,
		alpha: 0.9
	});
	// Animation for explosion
	self.duration = 30; // 0.5 seconds at 60fps
	self.timer = 0;
	self.update = function () {
		self.timer++;
		// Scale up and fade out
		var progress = self.timer / self.duration;
		explosionGraphics.scaleX = (size || 1) * (1 + progress);
		explosionGraphics.scaleY = (size || 1) * (1 + progress);
		explosionGraphics.alpha = 1 - progress;
		if (self.timer >= self.duration) {
			self.destroy();
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.speed = 15;
	self.shootCooldown = 0;
	self.invulnerable = false;
	self.powerupTimer = 0;
	self.powerupActive = false;
	self.takeDamage = function (amount) {
		if (self.invulnerable) {
			return;
		}
		self.health -= amount;
		if (self.health <= 0) {
			self.health = 0;
			self.onDestroyed();
		} else {
			// Flash player when hit
			self.invulnerable = true;
			LK.effects.flashObject(self, 0xffffff, 500);
			// Screen shake on hit
			LK.effects.flashScreen(0xFF0000, 300);
			// Create small explosions around player for visual feedback
			for (var i = 0; i < 3; i++) {
				var explosionX = self.x + (Math.random() * 150 - 75);
				var explosionY = self.y + (Math.random() * 150 - 75);
				var smallExplosion = new Explosion(explosionX, explosionY, 0.5);
				game.addChild(smallExplosion);
			}
			// Add a brief visual impact to the player graphic itself
			tween(playerGraphics, {
				tint: 0xFF0000
			}, {
				duration: 100,
				onFinish: function onFinish() {
					playerGraphics.tint = 0xFFFFFF;
				}
			});
			LK.setTimeout(function () {
				self.invulnerable = false;
			}, 1000);
		}
	};
	self.applyPowerup = function () {
		self.powerupActive = true;
		self.powerupTimer = 300; // 5 seconds at 60fps
		playerGraphics.tint = 0x00ff00; // Green tint for powered up
		LK.getSound('powerup').play();
		// Visual effect for power-up
		tween(playerGraphics, {
			alpha: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 200,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(playerGraphics, {
					alpha: 1,
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 200,
					easing: tween.easeOut
				});
			}
		});
		// Create a powerup aura
		if (!self.powerupAura) {
			self.powerupAura = LK.getAsset('powerup', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 2,
				scaleY: 2,
				alpha: 0.3,
				tint: 0x00FFAA
			});
			self.addChild(self.powerupAura);
		} else {
			self.powerupAura.alpha = 0.3;
		}
	};
	self.shoot = function () {
		if (self.shootCooldown <= 0) {
			var bullet = new PlayerBullet();
			bullet.x = self.x;
			bullet.y = self.y - 70;
			game.addChild(bullet);
			bullets.push(bullet);
			LK.getSound('playerShoot').play();
			// If powered up, shoot 3 bullets instead of 1
			if (self.powerupActive) {
				var bulletLeft = new PlayerBullet();
				bulletLeft.x = self.x - 40;
				bulletLeft.y = self.y - 50;
				var bulletRight = new PlayerBullet();
				bulletRight.x = self.x + 40;
				bulletRight.y = self.y - 50;
				game.addChild(bulletLeft);
				game.addChild(bulletRight);
				bullets.push(bulletLeft);
				bullets.push(bulletRight);
			}
			self.shootCooldown = self.powerupActive ? 10 : 15;
		}
	};
	self.onDestroyed = function () {
		var explosion = new Explosion(self.x, self.y, 2);
		game.addChild(explosion);
		LK.getSound('explosion').play();
		// Show game over
		LK.showGameOver();
	};
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
		if (self.powerupActive) {
			self.powerupTimer--;
			// Animate the powerup aura
			if (self.powerupAura) {
				self.powerupAura.rotation += 0.02;
				// Pulse the aura
				self.powerupAuraTime = (self.powerupAuraTime || 0) + 0.05;
				self.powerupAura.alpha = 0.2 + Math.sin(self.powerupAuraTime) * 0.1;
				self.powerupAura.scale.set(1.8 + Math.sin(self.powerupAuraTime) * 0.2);
			}
			// Warning animation when powerup is about to expire
			if (self.powerupTimer < 60) {
				// Flash the player when powerup is about to end
				playerGraphics.alpha = 0.5 + Math.sin(self.powerupTimer * 0.2) * 0.5;
			}
			if (self.powerupTimer <= 0) {
				self.powerupActive = false;
				playerGraphics.tint = 0xffffff; // Reset tint
				playerGraphics.alpha = 1;
				// Remove powerup aura
				if (self.powerupAura) {
					self.powerupAura.destroy();
					self.powerupAura = null;
				}
			}
		}
	};
	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 = -15; // Move upwards
	self.damage = 10;
	self.update = function () {
		self.y += self.speed;
		// Check if bullet is off-screen
		if (self.y < -50) {
			self.removeFromGame();
		}
	};
	self.removeFromGame = function () {
		var index = bullets.indexOf(self);
		if (index > -1) {
			bullets.splice(index, 1);
			self.destroy();
		}
	};
	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 = 3;
	self.pulsateTimer = 0;
	self.update = function () {
		self.y += self.speed;
		// Pulsate effect
		self.pulsateTimer += 0.05;
		var scale = 1 + Math.sin(self.pulsateTimer) * 0.2;
		powerupGraphics.scaleX = scale;
		powerupGraphics.scaleY = scale;
		// Remove if off screen
		if (self.y > 2732 + 50) {
			self.removeFromGame();
		}
	};
	self.removeFromGame = function () {
		var index = powerups.indexOf(self);
		if (index > -1) {
			powerups.splice(index, 1);
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011 // Deep space blue
});

/**** 
* Game Code
****/ 
// Game state variables
var player;
var bullets = [];
var enemies = [];
var enemyBullets = [];
var asteroids = [];
var powerups = [];
var bosses = [];
var level = storage.level || 1;
var enemySpawnTimer = 0;
var asteroidSpawnTimer = 0;
var bossSpawned = false;
var gameStarted = false;
var levelEnemiesRequired;
var enemiesDefeated = 0;
var dragNode = null;
// Set up UI
var scoreTxt = new Text2('Score: 0', {
	size: 70,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreTxt);
var highScoreTxt = new Text2('High Score: ' + storage.highScore, {
	size: 50,
	fill: 0xFFFFFF
});
highScoreTxt.anchor.set(0, 0);
highScoreTxt.y = 80;
LK.gui.topRight.addChild(highScoreTxt);
var levelTxt = new Text2('Level: ' + level, {
	size: 70,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(1, 0);
LK.gui.topLeft.addChild(levelTxt);
levelTxt.x = 250; // Make sure it's not in the top-left corner
levelTxt.y = 50; // Adjust Y position as well
var healthBar = LK.getAsset('healthBar', {
	anchorX: 0,
	anchorY: 0.5,
	scaleX: 1,
	scaleY: 0.6
});
healthBar.x = 200;
LK.gui.bottom.addChild(healthBar);
var healthTxt = new Text2('Health', {
	size: 60,
	fill: 0xFFFFFF
});
healthTxt.anchor.set(0.5, 0.5);
healthTxt.x = 100;
LK.gui.bottom.addChild(healthTxt);
// Progress bar for level completion
var progressBarBg = LK.getAsset('healthBar', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1,
	scaleY: 0.4,
	tint: 0x555555
});
progressBarBg.x = 2048 / 2;
progressBarBg.y = 100;
LK.gui.top.addChild(progressBarBg);
var progressBar = LK.getAsset('healthBar', {
	anchorX: 0,
	anchorY: 0.5,
	scaleX: 0,
	scaleY: 0.3,
	tint: 0x00FFFF
});
progressBar.x = 2048 / 2 - progressBarBg.width / 2;
progressBar.y = 100;
LK.gui.top.addChild(progressBar);
var progressTxt = new Text2('Progress', {
	size: 40,
	fill: 0xFFFFFF
});
progressTxt.anchor.set(0.5, 0.5);
progressTxt.x = 2048 / 2;
progressTxt.y = 40;
LK.gui.top.addChild(progressTxt);
// Initialize player
function initPlayer() {
	player = new Player();
	player.x = 2048 / 2;
	player.y = 2732 - 200;
	game.addChild(player);
}
// Initialize level
function initLevel() {
	// Clear any existing enemies and bullets
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].destroy();
	}
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		enemyBullets[i].destroy();
	}
	for (var i = asteroids.length - 1; i >= 0; i--) {
		asteroids[i].destroy();
	}
	for (var i = powerups.length - 1; i >= 0; i--) {
		powerups[i].destroy();
	}
	for (var i = bosses.length - 1; i >= 0; i--) {
		bosses[i].destroy();
	}
	enemies = [];
	enemyBullets = [];
	asteroids = [];
	powerups = [];
	bosses = [];
	bossSpawned = false;
	enemiesDefeated = 0;
	// Set level difficulty
	levelEnemiesRequired = level * 15;
	enemySpawnTimer = 60;
	asteroidSpawnTimer = 180;
	// Update UI
	levelTxt.setText('Level: ' + level);
	// Start music
	LK.playMusic('bgMusic');
}
// Spawn enemy with random pattern
function spawnEnemy() {
	var enemy = new Enemy();
	// Random x position
	enemy.x = Math.random() * (2048 - 200) + 100;
	enemy.y = -100;
	// Set health and pattern based on level
	enemy.health = 20 + level * 5;
	// Choose movement pattern
	var patterns = ["straight", "zigzag", "sine"];
	if (level >= 3) {
		patterns.push("circle");
	}
	var pattern = patterns[Math.floor(Math.random() * patterns.length)];
	enemy.setMovementPattern(pattern);
	// Add spawn animation
	enemy.alpha = 0;
	enemy.scale.set(0.5);
	game.addChild(enemy);
	enemies.push(enemy);
	// Animate entrance
	tween(enemy, {
		alpha: 1,
		scaleX: 1,
		scaleY: 1
	}, {
		duration: 500,
		easing: tween.easeOutBack
	});
}
// Spawn asteroid
function spawnAsteroid() {
	var asteroid = new Asteroid();
	// Random x position
	asteroid.x = Math.random() * (2048 - 200) + 100;
	asteroid.y = -100;
	game.addChild(asteroid);
	asteroids.push(asteroid);
	// Add entry animation
	asteroid.alpha = 0.5;
	tween(asteroid, {
		alpha: 1,
		rotation: Math.random() * Math.PI * 2
	}, {
		duration: 800,
		easing: tween.easeOut
	});
}
// Spawn boss
function spawnBoss() {
	var boss = new Boss();
	boss.x = 2048 / 2;
	boss.y = 300;
	// Adjust boss health based on level
	boss.health = 500 + level * 100;
	boss.maxHealth = boss.health;
	game.addChild(boss);
	bosses.push(boss);
	// Activate boss after entrance animation
	tween(boss, {
		y: 300
	}, {
		duration: 2000,
		easing: tween.easeOutBack,
		onFinish: function onFinish() {
			boss.activate();
		}
	});
}
// Check collisions
function checkCollisions() {
	// Player bullets vs enemies
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Check against enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Create small impact effect
				var impact = new Explosion(bullet.x, bullet.y, 0.3);
				impact.duration = 15; // Shorter duration for impact
				game.addChild(impact);
				enemy.takeDamage(bullet.damage);
				bullet.removeFromGame();
				// Add a brief visual impact to the enemy
				tween(enemy, {
					tint: 0xFFFFFF
				}, {
					duration: 50,
					onFinish: function onFinish() {
						enemy.tint = 0xFF0000;
					}
				});
				break;
			}
		}
		// Check against asteroids
		for (var j = asteroids.length - 1; j >= 0; j--) {
			var asteroid = asteroids[j];
			if (bullet.intersects(asteroid)) {
				// Create small impact effect
				var impact = new Explosion(bullet.x, bullet.y, 0.3);
				impact.duration = 15; // Shorter duration for impact
				game.addChild(impact);
				asteroid.takeDamage(bullet.damage);
				bullet.removeFromGame();
				// Add a brief visual impact to the asteroid
				tween(asteroid, {
					tint: 0xFFFFFF
				}, {
					duration: 50,
					onFinish: function onFinish() {
						asteroid.tint = 0x999999;
					}
				});
				break;
			}
		}
		// Check against bosses
		for (var j = bosses.length - 1; j >= 0; j--) {
			var boss = bosses[j];
			if (bullet.intersects(boss) && boss.active) {
				// Create small impact effect
				var impact = new Explosion(bullet.x, bullet.y, 0.3);
				impact.duration = 15; // Shorter duration for impact
				game.addChild(impact);
				boss.takeDamage(bullet.damage);
				bullet.removeFromGame();
				// Add a brief visual impact to the boss
				tween(boss, {
					tint: 0xFFFFFF
				}, {
					duration: 50,
					onFinish: function onFinish() {
						boss.tint = 0xff3300;
					}
				});
				break;
			}
		}
	}
	// Enemy bullets vs player
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		if (bullet.intersects(player)) {
			player.takeDamage(bullet.damage);
			bullet.removeFromGame();
		}
	}
	// Player vs enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (player.intersects(enemy)) {
			player.takeDamage(20);
			enemy.takeDamage(enemy.health); // Destroy enemy
		}
	}
	// Player vs asteroids
	for (var i = asteroids.length - 1; i >= 0; i--) {
		var asteroid = asteroids[i];
		if (player.intersects(asteroid)) {
			player.takeDamage(30);
			asteroid.takeDamage(asteroid.health); // Destroy asteroid
		}
	}
	// Player vs powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		if (player.intersects(powerup)) {
			player.applyPowerup();
			powerup.removeFromGame();
		}
	}
}
// Handle player movement
function handleDrag(x, y) {
	if (dragNode) {
		dragNode.x = x;
		dragNode.y = y;
		// Constrain player to screen bounds
		if (dragNode.x < 50) {
			dragNode.x = 50;
		}
		if (dragNode.x > 2048 - 50) {
			dragNode.x = 2048 - 50;
		}
		if (dragNode.y < 50) {
			dragNode.y = 50;
		}
		if (dragNode.y > 2732 - 50) {
			dragNode.y = 2732 - 50;
		}
	}
}
// Event handlers
game.down = function (x, y, obj) {
	// Only set drag if we're started
	if (gameStarted) {
		dragNode = player;
		handleDrag(x, y);
	} else {
		// Start game on first touch
		gameStarted = true;
		initPlayer();
		initLevel();
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.move = function (x, y, obj) {
	handleDrag(x, y);
};
// Main game update loop
game.update = function () {
	if (!gameStarted) {
		// Show start screen text
		if (!game.startText) {
			game.startText = new Text2('Tap to Start\nSpace Defender', {
				size: 150,
				fill: 0xFFFFFF
			});
			game.startText.anchor.set(0.5, 0.5);
			game.startText.x = 2048 / 2;
			game.startText.y = 2732 / 2;
			game.addChild(game.startText);
			// Add background stars for start screen
			game.stars = [];
			for (var i = 0; i < 50; i++) {
				var star = LK.getAsset('playerBullet', {
					anchorX: 0.5,
					anchorY: 0.5,
					scaleX: Math.random() * 0.3 + 0.1,
					scaleY: Math.random() * 0.3 + 0.1,
					alpha: Math.random() * 0.7 + 0.3,
					tint: 0xFFFFFF
				});
				star.x = Math.random() * 2048;
				star.y = Math.random() * 2732;
				star.speed = Math.random() * 2 + 1;
				game.addChild(star);
				game.stars.push(star);
			}
			// Add pulsating effect to start text
			game.pulseValue = 0;
			// Add pulsing to the start text using tween
			tween(game.startText, {
				alpha: 0.5
			}, {
				duration: 1000,
				easing: tween.easeInOut,
				loop: true,
				yoyo: true
			});
		}
		// Animate stars in start screen
		if (game.stars) {
			game.pulseValue += 0.05;
			game.startText.scale.set(1 + Math.sin(game.pulseValue) * 0.05);
			for (var i = 0; i < game.stars.length; i++) {
				var star = game.stars[i];
				star.y += star.speed;
				if (star.y > 2732) {
					star.y = 0;
					star.x = Math.random() * 2048;
				}
			}
		}
		return;
	} else if (game.startText) {
		game.startText.destroy();
		game.startText = null;
		// Clean up stars
		if (game.stars) {
			for (var i = 0; i < game.stars.length; i++) {
				game.stars[i].destroy();
			}
			game.stars = null;
		}
	}
	// Update UI
	scoreTxt.setText('Score: ' + LK.getScore());
	// Update high score if needed
	if (LK.getScore() > storage.highScore) {
		storage.highScore = LK.getScore();
		highScoreTxt.setText('High Score: ' + storage.highScore);
	}
	// Update progress bar
	if (!bossSpawned) {
		var progress = enemiesDefeated / levelEnemiesRequired;
		progressBar.scaleX = progress;
		progressTxt.setText('Level Progress: ' + Math.floor(progress * 100) + '%');
	} else {
		progressTxt.setText('BOSS FIGHT!');
		if (!progressTxt.pulsating) {
			progressTxt.pulsating = true;
			progressTxt.pulseValue = 0;
			tween(progressTxt.scale, {
				x: 1.2,
				y: 1.2
			}, {
				duration: 300,
				easing: tween.easeInOut,
				loop: true,
				yoyo: true
			});
		}
		progressBar.tint = 0xFF0000;
		progressBar.scaleX = 1;
	}
	if (player) {
		// Update health bar
		healthBar.scaleX = Math.max(0, player.health / 100);
		// Auto-fire
		player.shoot();
	}
	// Spawn enemies
	if (!bossSpawned) {
		enemySpawnTimer--;
		if (enemySpawnTimer <= 0) {
			spawnEnemy();
			// Spawn rate increases with level
			enemySpawnTimer = Math.max(20, 100 - level * 10);
		}
		// Spawn asteroids
		asteroidSpawnTimer--;
		if (asteroidSpawnTimer <= 0) {
			spawnAsteroid();
			asteroidSpawnTimer = Math.max(60, 300 - level * 20);
		}
		// Check if we should spawn boss
		if (enemiesDefeated >= levelEnemiesRequired) {
			bossSpawned = true;
			spawnBoss();
		}
	}
	// Update all game objects
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].update();
	}
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
	}
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		enemyBullets[i].update();
	}
	for (var i = asteroids.length - 1; i >= 0; i--) {
		asteroids[i].update();
	}
	for (var i = powerups.length - 1; i >= 0; i--) {
		powerups[i].update();
	}
	for (var i = bosses.length - 1; i >= 0; i--) {
		bosses[i].update();
	}
	// Check for collisions
	checkCollisions();
};
// Start game music
LK.playMusic('bgMusic', {
	fade: {
		start: 0,
		end: 0.3,
		duration: 1000
	}
});

===================================================================
--- original.js
+++ change.js
@@ -415,8 +415,17 @@
 				var explosionY = self.y + (Math.random() * 150 - 75);
 				var smallExplosion = new Explosion(explosionX, explosionY, 0.5);
 				game.addChild(smallExplosion);
 			}
+			// Add a brief visual impact to the player graphic itself
+			tween(playerGraphics, {
+				tint: 0xFF0000
+			}, {
+				duration: 100,
+				onFinish: function onFinish() {
+					playerGraphics.tint = 0xFFFFFF;
+				}
+			});
 			LK.setTimeout(function () {
 				self.invulnerable = false;
 			}, 1000);
 		}
@@ -427,22 +436,22 @@
 		playerGraphics.tint = 0x00ff00; // Green tint for powered up
 		LK.getSound('powerup').play();
 		// Visual effect for power-up
 		tween(playerGraphics, {
-			alpha: 0.2,
-			scaleX: 1.5,
-			scaleY: 1.5
+			alpha: 0.5,
+			scaleX: 1.2,
+			scaleY: 1.2
 		}, {
-			duration: 300,
-			easing: tween.elasticOut,
+			duration: 200,
+			easing: tween.easeOut,
 			onFinish: function onFinish() {
 				tween(playerGraphics, {
 					alpha: 1,
 					scaleX: 1,
 					scaleY: 1
 				}, {
-					duration: 300,
-					easing: tween.elasticOut
+					duration: 200,
+					easing: tween.easeOut
 				});
 			}
 		});
 		// Create a powerup aura
@@ -624,8 +633,9 @@
 });
 levelTxt.anchor.set(1, 0);
 LK.gui.topLeft.addChild(levelTxt);
 levelTxt.x = 250; // Make sure it's not in the top-left corner
+levelTxt.y = 50; // Adjust Y position as well
 var healthBar = LK.getAsset('healthBar', {
 	anchorX: 0,
 	anchorY: 0.5,
 	scaleX: 1,
@@ -735,9 +745,9 @@
 		alpha: 1,
 		scaleX: 1,
 		scaleY: 1
 	}, {
-		duration: 300,
+		duration: 500,
 		easing: tween.easeOutBack
 	});
 }
 // Spawn asteroid
@@ -753,9 +763,9 @@
 	tween(asteroid, {
 		alpha: 1,
 		rotation: Math.random() * Math.PI * 2
 	}, {
-		duration: 500,
+		duration: 800,
 		easing: tween.easeOut
 	});
 }
 // Spawn boss
@@ -793,26 +803,61 @@
 				impact.duration = 15; // Shorter duration for impact
 				game.addChild(impact);
 				enemy.takeDamage(bullet.damage);
 				bullet.removeFromGame();
+				// Add a brief visual impact to the enemy
+				tween(enemy, {
+					tint: 0xFFFFFF
+				}, {
+					duration: 50,
+					onFinish: function onFinish() {
+						enemy.tint = 0xFF0000;
+					}
+				});
 				break;
 			}
 		}
 		// Check against asteroids
 		for (var j = asteroids.length - 1; j >= 0; j--) {
 			var asteroid = asteroids[j];
 			if (bullet.intersects(asteroid)) {
+				// Create small impact effect
+				var impact = new Explosion(bullet.x, bullet.y, 0.3);
+				impact.duration = 15; // Shorter duration for impact
+				game.addChild(impact);
 				asteroid.takeDamage(bullet.damage);
 				bullet.removeFromGame();
+				// Add a brief visual impact to the asteroid
+				tween(asteroid, {
+					tint: 0xFFFFFF
+				}, {
+					duration: 50,
+					onFinish: function onFinish() {
+						asteroid.tint = 0x999999;
+					}
+				});
 				break;
 			}
 		}
 		// Check against bosses
 		for (var j = bosses.length - 1; j >= 0; j--) {
 			var boss = bosses[j];
 			if (bullet.intersects(boss) && boss.active) {
+				// Create small impact effect
+				var impact = new Explosion(bullet.x, bullet.y, 0.3);
+				impact.duration = 15; // Shorter duration for impact
+				game.addChild(impact);
 				boss.takeDamage(bullet.damage);
 				bullet.removeFromGame();
+				// Add a brief visual impact to the boss
+				tween(boss, {
+					tint: 0xFFFFFF
+				}, {
+					duration: 50,
+					onFinish: function onFinish() {
+						boss.tint = 0xff3300;
+					}
+				});
 				break;
 			}
 		}
 	}
@@ -919,8 +964,17 @@
 				game.stars.push(star);
 			}
 			// Add pulsating effect to start text
 			game.pulseValue = 0;
+			// Add pulsing to the start text using tween
+			tween(game.startText, {
+				alpha: 0.5
+			}, {
+				duration: 1000,
+				easing: tween.easeInOut,
+				loop: true,
+				yoyo: true
+			});
 		}
 		// Animate stars in start screen
 		if (game.stars) {
 			game.pulseValue += 0.05;
@@ -962,11 +1016,18 @@
 		progressTxt.setText('BOSS FIGHT!');
 		if (!progressTxt.pulsating) {
 			progressTxt.pulsating = true;
 			progressTxt.pulseValue = 0;
+			tween(progressTxt.scale, {
+				x: 1.2,
+				y: 1.2
+			}, {
+				duration: 300,
+				easing: tween.easeInOut,
+				loop: true,
+				yoyo: true
+			});
 		}
-		progressTxt.pulseValue = (progressTxt.pulseValue || 0) + 0.1;
-		progressTxt.scale.set(1 + Math.sin(progressTxt.pulseValue) * 0.2);
 		progressBar.tint = 0xFF0000;
 		progressBar.scaleX = 1;
 	}
 	if (player) {