Now that you have the character moving around the screen, you will now need a way to identify when the hero finds a collectible. To do this you will use Collision Detection to know when the different nodes touch one another.
Now that you have the hero moving around and several collectibles for him to collect, you need to determine when your hero collides with one of them.
SceneKit uses the SCNPhysicsBody object to add physics simulations to a node. During the render ...