Tells the delegate to perform any updates that need to occur before actions, animations, and physics are evaluated.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The SceneKit object responsible for rendering the scene.
The current system time, in seconds. Use this parameter for any time-based elements of your game logic.
Implement this method to add game logic to the rendering loop. Any changes you make to the scene graph during this method are immediately reflected in the displayed scene. That is, SceneKit immediately updates the hierarchy of presentation nodes it uses to render the scene (instead of using the
SCNTransaction class to “batch” your changes).