title: Sprite Kit: create node only once for all scenes
body: <p>Normally in a sprite kit game, when a new scene presented, all the nodes in the old scene and their content removed automatically. Now what is, if a node like "HUD" should be not removed? Is there any way in sprite kit to create a node only once and use it in all scenes without removing and creating it again and again every time in every new scene? There must be a technique that makes it possible. that's a serious sprite kit design problem, if it is not possible. But I don't think so. The singleton technique is working great with an audio player, that created only once and used in all scenes. There is surley a way to create a node only once and use it in all scenes. Thanks for any idea.</p>