/**** 
* Classes
****/ 
// Class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 3;
	self.speedY = 3;
	self.update = function () {
		// Enemy update logic
		// Move in a straight line until they hit a wall
		if (self.x <= 0 || self.x >= 2048) {
			self.speedX = -self.speedX;
		}
		if (self.y <= 0 || self.y >= 2732) {
			self.speedY = -self.speedY;
		}
		self.x += self.speedX;
		self.y += self.speedY;
	};
});
// Class for important files
var ImportantFile = Container.expand(function () {
	var self = Container.call(this);
	var fileGraphics = self.attachAsset('file', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// File update logic
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Class for the player character
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 () {
		// Player update logic
	};
});

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

/**** 
* Game Code
****/ 
// Initialize player
var player = game.addChild(new Player());
player.x = 1024; // Center horizontally
player.y = 1366; // Center vertically
// Initialize enemies
var enemies = [];
for (var i = 0; i < 5; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * 2732;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Initialize important files
var files = [];
for (var i = 0; i < 3; i++) {
	var file = new ImportantFile();
	file.x = Math.random() * 2048;
	file.y = Math.random() * 2732;
	files.push(file);
	game.addChild(file);
}
// Handle player movement
game.move = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
// Game update loop
game.update = function () {
	// Update player
	player.update();
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
		// Check for collision with player
		if (player.intersects(enemies[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Check for collecting files
	for (var j = files.length - 1; j >= 0; j--) {
		if (player.intersects(files[j])) {
			files[j].destroy();
			files.splice(j, 1);
			LK.setScore(LK.getScore() + 1);
			if (files.length === 0) {
				LK.showYouWin();
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -7,14 +7,21 @@
 	var enemyGraphics = self.attachAsset('enemy', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.speed = 3;
+	self.speedX = 3;
+	self.speedY = 3;
 	self.update = function () {
 		// Enemy update logic
-		// Move in random directions
-		self.x += (Math.random() - 0.5) * self.speed;
-		self.y += (Math.random() - 0.5) * self.speed;
+		// Move in a straight line until they hit a wall
+		if (self.x <= 0 || self.x >= 2048) {
+			self.speedX = -self.speedX;
+		}
+		if (self.y <= 0 || self.y >= 2732) {
+			self.speedY = -self.speedY;
+		}
+		self.x += self.speedX;
+		self.y += self.speedY;
 	};
 });
 // Class for important files
 var ImportantFile = Container.expand(function () {