/**** 
* Classes
****/ 
// BlueBullet class
var BlueBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('blueBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -bulletGraphics.height) {
			self.destroy();
			heroBullets.splice(heroBullets.indexOf(self), 1);
		}
	};
});
// BlueEnemy class
var BlueEnemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('blueEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732 + enemyGraphics.height) {
			self.destroy();
			enemies.splice(enemies.indexOf(self), 1);
		}
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732 + enemyGraphics.height) {
			self.destroy();
			enemies.splice(enemies.indexOf(self), 1);
		}
	};
});
// EnemyBullet class
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732 + bulletGraphics.height) {
			self.destroy();
			enemyBullets.splice(enemyBullets.indexOf(self), 1);
		}
	};
});
//<Assets used in the game will automatically appear here>
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		// Hero update logic
	};
	self.bulletColor = 'blue';
	self.shoot = function () {
		var bullet;
		if (self.bulletColor === 'blue') {
			bullet = new BlueBullet();
		} else {
			bullet = new RedBullet();
		}
		bullet.x = self.x;
		bullet.y = self.y - heroGraphics.height / 2;
		game.addChild(bullet);
		heroBullets.push(bullet);
	};
	self.swapColor = function () {
		if (self.bulletColor === 'blue') {
			self.bulletColor = 'red';
		} else {
			self.bulletColor = 'blue';
		}
	};
});
// HeroBullet class
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('heroBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -bulletGraphics.height) {
			self.destroy();
			heroBullets.splice(heroBullets.indexOf(self), 1);
		}
	};
});
// RedBullet class
var RedBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('redBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -bulletGraphics.height) {
			self.destroy();
			heroBullets.splice(heroBullets.indexOf(self), 1);
		}
	};
});
// Star class
var Star = Container.expand(function () {
	var self = Container.call(this);
	var starGraphics = self.attachAsset('star', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732 + starGraphics.height) {
			self.y = -starGraphics.height;
			self.x = Math.random() * 2048;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Initialize arrays and variables
var hero;
var heroBullets = [];
var enemies = [];
var enemyBullets = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Initialize stars
var stars = [];
for (var i = 0; i < 100; i++) {
	var star = new Star();
	star.x = Math.random() * 2048;
	star.y = Math.random() * 2732;
	game.addChild(star);
	stars.push(star);
}
// Initialize hero
hero = new Hero();
hero.x = 2048 / 2;
hero.y = 2732 - 200;
game.addChild(hero);
// Spawn enemies
function spawnEnemy() {
	var enemy;
	if (Math.random() > 0.5) {
		enemy = new Enemy();
	} else {
		enemy = new BlueEnemy();
	}
	enemy.x = Math.random() * 2048;
	enemy.y = -enemy.height;
	game.addChild(enemy);
	enemies.push(enemy);
}
// Handle game updates
game.update = function () {
	// Update stars
	for (var i = 0; i < stars.length; i++) {
		stars[i].update();
	}
	// Update hero bullets
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		heroBullets[i].update();
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		enemyBullets[i].update();
	}
	// Check for collisions
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (heroBullets[i].intersects(enemies[j])) {
				if (enemies[j] instanceof BlueEnemy && heroBullets[i] instanceof BlueBullet) {
					enemies[j].destroy();
					heroBullets[i].destroy();
					enemies.splice(j, 1);
					heroBullets.splice(i, 1);
					score++;
					scoreTxt.setText(score);
					break;
				} else if (!(enemies[j] instanceof BlueEnemy) && heroBullets[i] instanceof RedBullet) {
					enemies[j].destroy();
					heroBullets[i].destroy();
					enemies.splice(j, 1);
					heroBullets.splice(i, 1);
					score++;
					scoreTxt.setText(score);
					break;
				}
			}
		}
	}
	// Check for collisions between hero and enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		if (hero.intersects(enemyBullets[i])) {
			hero.destroy();
			enemyBullets[i].destroy();
			enemyBullets.splice(i, 1);
			LK.showGameOver();
			break;
		}
	}
	// Fire enemy bullets
	if (LK.ticks % 60 == 0) {
		for (var i = 0; i < enemies.length; i++) {
			var bullet = new EnemyBullet();
			bullet.x = enemies[i].x;
			bullet.y = enemies[i].y + enemies[i].height / 2;
			game.addChild(bullet);
			enemyBullets.push(bullet);
		}
	}
	// Spawn new enemies
	if (LK.ticks % 120 == 0) {
		spawnEnemy();
	}
	// Decrease shootDelay
	if (shootDelay > 0) {
		shootDelay--;
	}
};
// Handle touch events
game.down = function (x, y, obj) {
	hero.swapColor();
};
var shootDelay = 0;
game.move = function (x, y, obj) {
	hero.x = x;
	if (shootDelay <= 0) {
		hero.shoot();
		shootDelay = 10; // Delay for 10 frames
	}
};
game.up = function (x, y, obj) {
	// No action needed on touch up
};

===================================================================
--- original.js
+++ change.js
@@ -57,26 +57,9 @@
 		anchorY: 0.5
 	});
 	self.speed = 10;
 	self.update = function () {
-		// Add homing functionality
-		if (hero) {
-			var dx = hero.x - self.x;
-			var dy = hero.y - self.y;
-			var angle = Math.atan2(dy, dx);
-			self.x += Math.cos(angle) * self.speed;
-			self.y += Math.sin(angle) * self.speed;
-		}
-		// Check for collisions with hero bullets
-		for (var i = heroBullets.length - 1; i >= 0; i--) {
-			if (self.intersects(heroBullets[i])) {
-				self.destroy();
-				enemyBullets.splice(enemyBullets.indexOf(self), 1);
-				heroBullets[i].destroy();
-				heroBullets.splice(i, 1);
-				break;
-			}
-		}
+		self.y += self.speed;
 		if (self.y > 2732 + bulletGraphics.height) {
 			self.destroy();
 			enemyBullets.splice(enemyBullets.indexOf(self), 1);
 		}
@@ -109,16 +92,10 @@
 	};
 	self.swapColor = function () {
 		if (self.bulletColor === 'blue') {
 			self.bulletColor = 'red';
-			self.attachAsset('hero', {
-				color: 0xff0000
-			});
 		} else {
 			self.bulletColor = 'blue';
-			self.attachAsset('hero', {
-				color: 0x0000ff
-			});
 		}
 	};
 });
 // HeroBullet class
@@ -152,8 +129,24 @@
 			heroBullets.splice(heroBullets.indexOf(self), 1);
 		}
 	};
 });
+// Star class
+var Star = Container.expand(function () {
+	var self = Container.call(this);
+	var starGraphics = self.attachAsset('star', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y > 2732 + starGraphics.height) {
+			self.y = -starGraphics.height;
+			self.x = Math.random() * 2048;
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -175,8 +168,17 @@
 	fill: "#ffffff"
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
+// Initialize stars
+var stars = [];
+for (var i = 0; i < 100; i++) {
+	var star = new Star();
+	star.x = Math.random() * 2048;
+	star.y = Math.random() * 2732;
+	game.addChild(star);
+	stars.push(star);
+}
 // Initialize hero
 hero = new Hero();
 hero.x = 2048 / 2;
 hero.y = 2732 - 200;
@@ -195,8 +197,12 @@
 	enemies.push(enemy);
 }
 // Handle game updates
 game.update = function () {
+	// Update stars
+	for (var i = 0; i < stars.length; i++) {
+		stars[i].update();
+	}
 	// Update hero bullets
 	for (var i = heroBullets.length - 1; i >= 0; i--) {
 		heroBullets[i].update();
 	}
@@ -211,15 +217,25 @@
 	// Check for collisions
 	for (var i = heroBullets.length - 1; i >= 0; i--) {
 		for (var j = enemies.length - 1; j >= 0; j--) {
 			if (heroBullets[i].intersects(enemies[j])) {
-				enemies[j].destroy();
-				heroBullets[i].destroy();
-				enemies.splice(j, 1);
-				heroBullets.splice(i, 1);
-				score++;
-				scoreTxt.setText(score);
-				break;
+				if (enemies[j] instanceof BlueEnemy && heroBullets[i] instanceof BlueBullet) {
+					enemies[j].destroy();
+					heroBullets[i].destroy();
+					enemies.splice(j, 1);
+					heroBullets.splice(i, 1);
+					score++;
+					scoreTxt.setText(score);
+					break;
+				} else if (!(enemies[j] instanceof BlueEnemy) && heroBullets[i] instanceof RedBullet) {
+					enemies[j].destroy();
+					heroBullets[i].destroy();
+					enemies.splice(j, 1);
+					heroBullets.splice(i, 1);
+					score++;
+					scoreTxt.setText(score);
+					break;
+				}
 			}
 		}
 	}
 	// Check for collisions between hero and enemy bullets
@@ -259,9 +275,9 @@
 game.move = function (x, y, obj) {
 	hero.x = x;
 	if (shootDelay <= 0) {
 		hero.shoot();
-		shootDelay = 30; // Delay for 30 frames
+		shootDelay = 10; // Delay for 10 frames
 	}
 };
 game.up = function (x, y, obj) {
 	// No action needed on touch up