===================================================================
--- original.js
+++ change.js
@@ -1,110 +1,104 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // 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 = -10;
-  self.update = function () {
-    self.y += self.speed;
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -10;
+	self.update = function () {
+		self.y += self.speed;
+	};
 });
 // 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 = 2;
-  self.update = function () {
-    // Enemy movement logic goes here
-  };
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 2;
+	self.update = function () {
+		// Enemy movement logic goes here
+	};
 });
 // The assets will be automatically created and loaded by the LK engine
 // 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 = 5;
-  self.update = function () {
-    // Player movement logic goes here
-  };
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		// Player movement logic goes here
+	};
 });
 
-/****
+/**** 
 * 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, bullets and enemies
 var player = game.addChild(new Player());
 player.x = 2048 / 2;
 player.y = 2732 - 100;
 var bullets = [];
 var enemies = [];
 // Game update function
 game.update = function () {
-  // Player movement logic
-  if (LK.keys['ArrowLeft']) {
-    player.x -= player.speed;
-  }
-  if (LK.keys['ArrowRight']) {
-    player.x += player.speed;
-  }
-  // Shooting logic
-  if (LK.keys['Space']) {
-    var bullet = new Bullet();
-    bullet.x = player.x;
-    bullet.y = player.y;
-    bullets.push(bullet);
-    game.addChild(bullet);
-  }
-  // Enemy spawning logic
-  if (LK.ticks % 120 == 0) {
-    var enemy = new Enemy();
-    enemy.x = Math.random() * 2048;
-    enemy.y = 0;
-    enemies.push(enemy);
-    game.addChild(enemy);
-  }
-  // Bullet and enemy update logic
-  for (var i = bullets.length - 1; i >= 0; i--) {
-    bullets[i].update();
-    if (bullets[i].y < 0) {
-      game.removeChild(bullets[i]);
-      bullets.splice(i, 1);
-    }
-  }
-  for (var i = enemies.length - 1; i >= 0; i--) {
-    enemies[i].update();
-    if (enemies[i].y > 2732) {
-      game.removeChild(enemies[i]);
-      enemies.splice(i, 1);
-    }
-  }
-  // Collision detection
-  for (var i = bullets.length - 1; i >= 0; i--) {
-    for (var j = enemies.length - 1; j >= 0; j--) {
-      if (bullets[i].intersects(enemies[j])) {
-        game.removeChild(bullets[i]);
-        bullets.splice(i, 1);
-        game.removeChild(enemies[j]);
-        enemies.splice(j, 1);
-        break;
-      }
-    }
-  }
+	// Player movement logic has been removed as it was causing errors and is not suitable for a touch screen game
+	// Shooting logic
+	if (LK.keys['Space']) {
+		var bullet = new Bullet();
+		bullet.x = player.x;
+		bullet.y = player.y;
+		bullets.push(bullet);
+		game.addChild(bullet);
+	}
+	// Enemy spawning logic
+	if (LK.ticks % 120 == 0) {
+		var enemy = new Enemy();
+		enemy.x = Math.random() * 2048;
+		enemy.y = 0;
+		enemies.push(enemy);
+		game.addChild(enemy);
+	}
+	// Bullet and enemy update logic
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		bullets[i].update();
+		if (bullets[i].y < 0) {
+			game.removeChild(bullets[i]);
+			bullets.splice(i, 1);
+		}
+	}
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		enemies[i].update();
+		if (enemies[i].y > 2732) {
+			game.removeChild(enemies[i]);
+			enemies.splice(i, 1);
+		}
+	}
+	// Collision detection
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			if (bullets[i].intersects(enemies[j])) {
+				game.removeChild(bullets[i]);
+				bullets.splice(i, 1);
+				game.removeChild(enemies[j]);
+				enemies.splice(j, 1);
+				break;
+			}
+		}
+	}
 };
\ No newline at end of file