===================================================================
--- original.js
+++ change.js
@@ -1,59 +1,59 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // Define the Obstacle class
 var Obstacle = Container.expand(function () {
-  var self = Container.call(this);
-  var obstacleGraphics = self.attachAsset('bullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 5; // Initial speed
-  // Update method for obstacle movement
-  self.update = function () {
-    self.x -= self.speed;
-  };
-  return self;
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5; // Initial speed
+	// Update method for obstacle movement
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	return self;
 });
 //<Assets used in the game will automatically appear here>
 //<Write imports for supported plugins here>
 // Define the Player class
 var Player = Container.expand(function () {
-  var self = Container.call(this);
-  var playerGraphics = self.attachAsset('character', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.layer = 1; // Start on the middle layer
-  self.speed = 10; // Initial speed
-  // Method to move the player up a layer
-  self.moveUp = function () {
-    if (self.layer > 0) {
-      self.layer--;
-      self.y -= 300; // Move up by 300 pixels
-    }
-  };
-  // Method to move the player down a layer
-  self.moveDown = function () {
-    if (self.layer < 2) {
-      self.layer++;
-      self.y += 300; // Move down by 300 pixels
-    }
-  };
-  return self;
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('character', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.layer = 1; // Start on the middle layer
+	self.speed = 10; // Initial speed
+	// Method to move the player up a layer
+	self.moveUp = function () {
+		if (self.layer > 0) {
+			self.layer--;
+			self.y -= 300; // Move up by 300 pixels
+		}
+	};
+	// Method to move the player down a layer
+	self.moveDown = function () {
+		if (self.layer < 2) {
+			self.layer++;
+			self.y += 300; // Move down by 300 pixels
+		}
+	};
+	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 = 200;
 player.y = 1366; // Start on the middle layer
@@ -62,55 +62,55 @@
 var obstacles = [];
 // Initialize score
 var score = 0;
 var scoreTxt = new Text2('0', {
-  size: 150,
-  fill: 0xFFFFFF
+	size: 150,
+	fill: 0xFFFFFF
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
 // Function to create obstacles
 function createObstacle() {
-  var obstacle = new Obstacle();
-  obstacle.x = 2048;
-  obstacle.y = 1366 + (Math.floor(Math.random() * 3) - 1) * 300; // Random layer
-  obstacles.push(obstacle);
-  game.addChild(obstacle);
+	var obstacle = new Obstacle();
+	obstacle.x = 2048;
+	obstacle.y = 1366 + (Math.floor(Math.random() * 3) - 1) * 300; // Random layer
+	obstacles.push(obstacle);
+	game.addChild(obstacle);
 }
 // Function to update game speed
 function updateSpeed() {
-  player.speed += 0.01;
-  obstacles.forEach(function (obstacle) {
-    obstacle.speed += 0.01;
-  });
+	player.speed += 0.01;
+	obstacles.forEach(function (obstacle) {
+		obstacle.speed += 0.01;
+	});
 }
 // Handle swipe up and down
 game.move = function (x, y, obj) {
-  if (obj.event.deltaY < 0) {
-    player.moveUp();
-  } else if (obj.event.deltaY > 0) {
-    player.moveDown();
-  }
+	if (obj.event && obj.event.deltaY < 0) {
+		player.moveUp();
+	} else if (obj.event && obj.event.deltaY > 0) {
+		player.moveDown();
+	}
 };
 // Game update loop
 game.update = function () {
-  // Update obstacles
-  for (var i = obstacles.length - 1; i >= 0; i--) {
-    obstacles[i].update();
-    if (obstacles[i].x < -100) {
-      obstacles[i].destroy();
-      obstacles.splice(i, 1);
-      score++;
-      scoreTxt.setText(score);
-    }
-    if (obstacles[i].intersects(player)) {
-      LK.effects.flashScreen(0xff0000, 1000);
-      LK.showGameOver();
-    }
-  }
-  // Create new obstacles
-  if (LK.ticks % 60 == 0) {
-    createObstacle();
-  }
-  // Update speed
-  updateSpeed();
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		obstacles[i].update();
+		if (obstacles[i].x < -100) {
+			obstacles[i].destroy();
+			obstacles.splice(i, 1);
+			score++;
+			scoreTxt.setText(score);
+		}
+		if (obstacles[i].intersects(player)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+		}
+	}
+	// Create new obstacles
+	if (LK.ticks % 60 == 0) {
+		createObstacle();
+	}
+	// Update speed
+	updateSpeed();
 };
\ No newline at end of file