/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -3;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -50) {
			self.destroy();
		}
	};
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		if (self.x < 0) {
			self.x = 0;
		}
		if (self.x > 2048) {
			self.x = 2048;
		}
		if (self.y < 0) {
			self.y = 0;
		}
		if (self.y > 2732) {
			self.y = 2732;
		}
	};
});
var Spaceship = Container.expand(function () {
	var self = Container.call(this);
	var spaceshipGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y -= self.speed;
		if (self.y < -50) {
			self.destroy();
		}
	};
});

/**** 
* Initialize Game
****/ 
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 1024;
player.y = 2400;
var enemies = [];
var bullets = [];
game.update = function () {
	if (LK.ticks % 60 == 0) {
		var enemy = game.addChild(new Enemy());
		enemy.x = Math.random() * 2048;
		enemy.y = 0;
		enemies.push(enemy);
	}
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				bullet.destroy();
				bullets.splice(i, 1);
				enemy.destroy();
				enemies.splice(j, 1);
				break;
			}
		}
	}
};
game.down = function (x, y, obj) {
	var spaceship = game.addChild(new Spaceship());
	spaceship.x = player.x;
	spaceship.y = player.y;
	bullets.push(spaceship);
};
game.move = function (x, y, obj) {
	player.x = x;
	player.y = y;
};

===================================================================
--- original.js
+++ change.js
@@ -1,41 +1,17 @@
 /**** 
 * Classes
 ****/ 
-var Bullet = Container.expand(function () {
-	var self = Container.call(this);
-	var bulletGraphics = self.attachAsset('bullet', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.speed = 5;
-	self.update = function () {
-		self.y -= self.speed;
-		if (self.y < -50) {
-			self.destroy();
-		}
-	};
-});
 var Enemy = Container.expand(function () {
 	var self = Container.call(this);
 	var enemyGraphics = self.attachAsset('enemy', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = -3;
 	self.update = function () {
-		// Calculate the direction vector from enemy to player
-		var dx = player.x - self.x;
-		var dy = player.y - self.y;
-		var mag = Math.sqrt(dx * dx + dy * dy);
-		// Normalize the direction vector
-		dx /= mag;
-		dy /= mag;
-		// Move the enemy towards the player
-		self.x += dx * self.speed;
-		self.y += dy * self.speed;
-		// Destroy the enemy if it goes off screen
-		if (self.y < -50 || self.y > 2782 || self.x < -50 || self.x > 2098) {
+		self.y += self.speed;
+		if (self.y < -50) {
 			self.destroy();
 		}
 	};
 });
@@ -60,8 +36,22 @@
 			self.y = 2732;
 		}
 	};
 });
+var Spaceship = Container.expand(function () {
+	var self = Container.call(this);
+	var spaceshipGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		self.y -= self.speed;
+		if (self.y < -50) {
+			self.destroy();
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -100,12 +90,12 @@
 		}
 	}
 };
 game.down = function (x, y, obj) {
-	var bullet = game.addChild(new Bullet());
-	bullet.x = player.x;
-	bullet.y = player.y;
-	bullets.push(bullet);
+	var spaceship = game.addChild(new Spaceship());
+	spaceship.x = player.x;
+	spaceship.y = player.y;
+	bullets.push(spaceship);
 };
 game.move = function (x, y, obj) {
 	player.x = x;
 	player.y = y;