===================================================================
--- original.js
+++ change.js
@@ -1,123 +1,136 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // Define the Bullet class
 var Bullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.attachAsset('bullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = -15;
-  self.update = function () {
-    self.y += self.speed;
-    if (self.y < -self.height) {
-      self.destroy();
-    }
-  };
-  return self;
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -15;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y < -self.height) {
+			self.destroy();
+		}
+	};
+	return self;
 });
 // Define the 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) {
-      self.y = -self.height;
-    }
-  };
-  return self;
+	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) {
+			self.y = -self.height;
+		}
+	};
+	return self;
 });
 //<Assets used in the game will automatically appear here>
 // Define the Player class
 var Player = Container.expand(function () {
-  var self = Container.call(this);
-  var playerGraphics = self.attachAsset('player', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 10;
-  self.update = function () {
-    // Player update logic
-  };
-  return self;
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10;
+	self.update = function () {
+		// Player update logic
+	};
+	return self;
 });
 
-/****
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-  backgroundColor: 0x000000 //Init game with black background 
+	backgroundColor: 0x000000 //Init game with black background 
 });
 
-/****
+/**** 
 * Game Code
-****/
+****/ 
 // Initialize player
 var player = new Player();
 player.x = 2048 / 2;
 player.y = 2732 - 200;
 game.addChild(player);
 // 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);
+	var enemy = new Enemy();
+	enemy.x = Math.random() * 2048;
+	enemy.y = Math.random() * -2732;
+	enemies.push(enemy);
+	game.addChild(enemy);
 }
 // Initialize bullets
 var bullets = [];
 // Handle player movement
 game.move = function (x, y, obj) {
-  player.x = x;
-  player.y = y;
+	player.x = x;
+	player.y = y;
 };
+// Add event listeners for keyboard inputs
+window.addEventListener('keydown', function (event) {
+	switch (event.key) {
+		case 'ArrowLeft':
+		case 'a':
+			player.x -= player.speed;
+			break;
+		case 'ArrowRight':
+		case 'd':
+			player.x += player.speed;
+			break;
+	}
+});
 // Handle shooting
 game.down = function (x, y, obj) {
-  var bullet = new Bullet();
-  bullet.x = player.x;
-  bullet.y = player.y;
-  bullets.push(bullet);
-  game.addChild(bullet);
+	var bullet = new Bullet();
+	bullet.x = player.x;
+	bullet.y = player.y;
+	bullets.push(bullet);
+	game.addChild(bullet);
 };
 // Update game state
 game.update = function () {
-  // Update player
-  player.update();
-  // Update enemies
-  for (var i = 0; i < enemies.length; i++) {
-    enemies[i].update();
-    if (player.intersects(enemies[i])) {
-      LK.effects.flashScreen(0xff0000, 1000);
-      LK.showGameOver();
-    }
-  }
-  // Update bullets
-  for (var j = bullets.length - 1; j >= 0; j--) {
-    bullets[j].update();
-    for (var k = enemies.length - 1; k >= 0; k--) {
-      if (bullets[j].intersects(enemies[k])) {
-        bullets[j].destroy();
-        bullets.splice(j, 1);
-        enemies[k].destroy();
-        enemies.splice(k, 1);
-        break;
-      }
-    }
-  }
-  // Spawn new enemies
-  if (enemies.length < 5) {
-    var newEnemy = new Enemy();
-    newEnemy.x = Math.random() * 2048;
-    newEnemy.y = Math.random() * -2732;
-    enemies.push(newEnemy);
-    game.addChild(newEnemy);
-  }
+	// Update player
+	player.update();
+	// Update enemies
+	for (var i = 0; i < enemies.length; i++) {
+		enemies[i].update();
+		if (player.intersects(enemies[i])) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+		}
+	}
+	// Update bullets
+	for (var j = bullets.length - 1; j >= 0; j--) {
+		bullets[j].update();
+		for (var k = enemies.length - 1; k >= 0; k--) {
+			if (bullets[j].intersects(enemies[k])) {
+				bullets[j].destroy();
+				bullets.splice(j, 1);
+				enemies[k].destroy();
+				enemies.splice(k, 1);
+				break;
+			}
+		}
+	}
+	// Spawn new enemies
+	if (enemies.length < 5) {
+		var newEnemy = new Enemy();
+		newEnemy.x = Math.random() * 2048;
+		newEnemy.y = Math.random() * -2732;
+		enemies.push(newEnemy);
+		game.addChild(newEnemy);
+	}
 };
\ No newline at end of file