public MainLayer()
{
var batchnode = CCSpriteBatchNode.Create("Images/sprites", 10);
AddChild(batchnode, -1, (int)Tags.SpriteManager);
var background = CCSprite.Create(batchnode.Texture, new CCRect(0, 0, 320, 480));
background.Position = new CCPoint(160, 240);
batchnode.AddChild(background);
}