===================================================================
--- original.js
+++ change.js
@@ -1,79 +1,96 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 //<Assets used in the game will automatically appear here>
 // Bird class
 var Bird = Container.expand(function () {
-  var self = Container.call(this);
-  var birdGraphics = self.attachAsset('bird', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speedY = 0;
-  self.gravity = 0.5;
-  self.jumpStrength = -10;
-  self.update = function () {
-    self.speedY += self.gravity;
-    self.y += self.speedY;
-    if (self.y > 2732 - birdGraphics.height / 2) {
-      self.y = 2732 - birdGraphics.height / 2;
-      self.speedY = 0;
-    }
-  };
-  self.jump = function () {
-    self.speedY = self.jumpStrength;
-  };
+	var self = Container.call(this);
+	var birdGraphics = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speedY = 0;
+	self.gravity = 0.5;
+	self.speedX = 0;
+	self.jumpStrength = -10;
+	self.update = function () {
+		self.speedY += self.gravity;
+		self.y += self.speedY;
+		self.x += self.speedX;
+		if (self.x < birdGraphics.width / 2) {
+			self.x = birdGraphics.width / 2;
+			self.speedX = 0;
+		}
+		if (self.x > 2048 - birdGraphics.width / 2) {
+			self.x = 2048 - birdGraphics.width / 2;
+			self.speedX = 0;
+		}
+		if (self.y > 2732 - birdGraphics.height / 2) {
+			self.y = 2732 - birdGraphics.height / 2;
+			self.speedY = 0;
+		}
+	};
+	self.jump = function () {
+		self.speedY = self.jumpStrength;
+	};
 });
 // Platform class
 var Platform = Container.expand(function () {
-  var self = Container.call(this);
-  var platformGraphics = self.attachAsset('platform', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.update = function () {
-    self.y += 5;
-    if (self.y > 2732 + platformGraphics.height / 2) {
-      self.y = -platformGraphics.height / 2;
-      self.x = Math.random() * 2048;
-    }
-  };
+	var self = Container.call(this);
+	var platformGraphics = self.attachAsset('platform', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		self.y += 5;
+		if (self.y > 2732 + platformGraphics.height / 2) {
+			self.y = -platformGraphics.height / 2;
+			self.x = Math.random() * 2048;
+		}
+	};
 });
 
-/****
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-  backgroundColor: 0x87CEEB // Init game with sky blue background
+	backgroundColor: 0x87CEEB // Init game with sky blue background
 });
 
-/****
+/**** 
 * Game Code
-****/
+****/ 
 // Initialize bird
 var bird = game.addChild(new Bird());
 bird.x = 2048 / 2;
 bird.y = 2732 / 2;
+bird.speedX = 0;
 // Initialize platforms
 var platforms = [];
 for (var i = 0; i < 5; i++) {
-  var platform = new Platform();
-  platform.x = Math.random() * 2048;
-  platform.y = i * 500;
-  platforms.push(platform);
-  game.addChild(platform);
+	var platform = new Platform();
+	platform.x = Math.random() * 2048;
+	platform.y = i * 500;
+	platforms.push(platform);
+	game.addChild(platform);
 }
 // Handle touch events
 game.down = function (x, y, obj) {
-  bird.jump();
+	bird.jump();
+	if (x < 2048 / 2) {
+		bird.speedX = -5;
+	} else {
+		bird.speedX = 5;
+	}
 };
 // Update game logic
 game.update = function () {
-  bird.update();
-  for (var i = 0; i < platforms.length; i++) {
-    platforms[i].update();
-    if (bird.intersects(platforms[i]) && bird.speedY > 0) {
-      bird.jump();
-    }
-  }
+	bird.update();
+	for (var i = 0; i < platforms.length; i++) {
+		platforms[i].update();
+		if (bird.intersects(platforms[i]) && bird.speedY > 0) {
+			bird.jump();
+			bird.speedX = 0;
+		}
+	}
 };
\ No newline at end of file