/**** 
* Classes
****/ 
// Background class
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('background', {
		anchorX: 0.0,
		anchorY: 0.0
	});
	self.speed = -1;
	self.update = function () {
		self.x += self.speed;
		if (self.x <= -2048) {
			self.x = 2048;
		}
	};
	return self;
});
// Boss class
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('boss', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -5;
	self.update = function () {
		self.x += self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
	return self;
});
// Foreground class
var Foreground = Container.expand(function () {
	var self = Container.call(this);
	var foregroundGraphics = self.attachAsset('foreground', {
		anchorX: 0.0,
		anchorY: 0.0
	});
	self.speed = -2;
	self.update = function () {
		self.x += self.speed;
		if (self.x <= -2048) {
			self.x = 2048;
		}
	};
	return self;
});
//<Assets used in the game will automatically appear here>
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	self.heroIdle = self.attachAsset('hero_idle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.heroRun1 = self.attachAsset('hero_run1', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.heroRun2 = self.attachAsset('hero_run2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.heroJump = self.attachAsset('hero_jump', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.heroIdle.visible = true;
	self.heroRun1.visible = false;
	self.heroRun2.visible = false;
	self.heroJump.visible = false;
	self.speed = 3;
	self.jumpSpeed = -30;
	self.gravity = 1;
	self.isJumping = false;
	self.isFalling = false;
	self.doubleJump = false;
	self.isMovingLeft = false;
	self.isMovingRight = false;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.jumpSpeed;
			self.jumpSpeed += self.gravity;
			if (self.jumpSpeed >= 0) {
				self.isJumping = false;
				self.isFalling = true;
			}
			self.heroIdle.visible = false;
			self.heroRun1.visible = false;
			self.heroRun2.visible = false;
			self.heroJump.visible = true;
		} else if (self.isFalling) {
			self.y += self.jumpSpeed;
			self.jumpSpeed += self.gravity;
			if (self.y >= 2732 - self.height / 2) {
				self.y = 2732 - self.height / 2;
				self.isFalling = false;
				self.jumpSpeed = -30;
				self.doubleJump = false;
			}
			self.heroIdle.visible = false;
			self.heroRun1.visible = false;
			self.heroRun2.visible = false;
			self.heroJump.visible = true;
		} else {
			self.heroJump.visible = false;
			self.heroIdle.visible = false;
			if (self.isMovingRight) {
				if (LK.ticks % 30 == 0) {
					if (self.heroRun1.visible) {
						self.heroRun1.visible = false;
						self.heroRun2.visible = true;
					} else {
						self.heroRun1.visible = true;
						self.heroRun2.visible = false;
					}
				}
			} else {
				self.heroRun1.visible = false;
				self.heroRun2.visible = false;
				self.heroIdle.visible = true;
			}
		}
		// Add left and right movement
		if (self.isMovingLeft) {
			self.x -= self.speed;
			if (self.x <= 0) {
				self.x = 0;
			}
		}
		if (self.isMovingRight) {
			self.x += self.speed;
			if (self.x >= 2048) {
				self.x = 2048;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping && !self.isFalling) {
			self.isJumping = true;
		} else if (!self.doubleJump) {
			self.isJumping = true;
			self.doubleJump = true;
			self.jumpSpeed = -20;
		}
	};
	return self;
});
// Hurdle class
var Hurdle = Container.expand(function () {
	var self = Container.call(this);
	var hurdleGraphics = self.attachAsset('hurdle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -5;
	self.update = function () {
		self.x += self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game();

/**** 
* Game Code
****/ 
function spawnHurdle() {
	if (hurdles.length % 10 == 0 && !bossSpawned) {
		var boss = new Boss();
		boss.x = 2048;
		boss.y = 2732 - boss.height / 2; // Ground level
		game.addChild(boss);
		bossSpawned = true;
	} else {
		var hurdle = new Hurdle();
		hurdle.x = 2048;
		hurdle.y = 2732 - hurdle.height / 2; // Ground level
		hurdles.push(hurdle);
		game.addChild(hurdle);
	}
}
var background1 = game.addChild(new Background());
background1.x = 0;
background1.y = 0;
var background2 = game.addChild(new Background());
background2.x = 2048;
background2.y = 0;
var foreground1 = game.addChild(new Foreground());
foreground1.x = 0;
foreground1.y = 0;
var foreground2 = game.addChild(new Foreground());
foreground2.x = 2048;
foreground2.y = 0;
var hero = game.addChild(new Hero());
hero.x = 200;
hero.y = 2732 - hero.height / 2; // Ground level
var hurdles = [];
var bossSpawned = false;
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
game.down = function (x, y, obj) {
	if (obj) {
		hero.jump();
	}
};
game.up = function (x, y, obj) {
	if (obj) {
		hero.isMovingRight = false;
	}
};
game.update = function () {
	hero.update();
	for (var i = hurdles.length - 1; i >= 0; i--) {
		hurdles[i].update();
		if (hero.intersects(hurdles[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	if (LK.ticks % 120 == 0) {
		spawnHurdle();
	}
	score += 1;
	scoreTxt.setText(score);
};
background1.update();
background2.update();
foreground1.update();
foreground2.update();
game.move = function (x, y, obj) {
	var game_position = game.toLocal(obj.global);
	hero.x = game_position.x;
};

===================================================================
--- original.js
+++ change.js
@@ -108,16 +108,22 @@
 			self.heroJump.visible = true;
 		} else {
 			self.heroJump.visible = false;
 			self.heroIdle.visible = false;
-			if (LK.ticks % 30 == 0) {
-				if (self.heroRun1.visible) {
-					self.heroRun1.visible = false;
-					self.heroRun2.visible = true;
-				} else {
-					self.heroRun1.visible = true;
-					self.heroRun2.visible = false;
+			if (self.isMovingRight) {
+				if (LK.ticks % 30 == 0) {
+					if (self.heroRun1.visible) {
+						self.heroRun1.visible = false;
+						self.heroRun2.visible = true;
+					} else {
+						self.heroRun1.visible = true;
+						self.heroRun2.visible = false;
+					}
 				}
+			} else {
+				self.heroRun1.visible = false;
+				self.heroRun2.visible = false;
+				self.heroIdle.visible = true;
 			}
 		}
 		// Add left and right movement
 		if (self.isMovingLeft) {