Case

ScenePhase.active

The scene is in the foreground and interactive.

Declaration 宣言 

case active

Discussion 議論

An active scene isn’t necessarily front-most. For example, a macOS window might be active even if it doesn’t currently have focus. Nevertheless, all scenes should operate normally in this phase.

An app or custom scene in this phase contains at least one active scene instance.

See Also 参照

Getting Scene Phases

case inactive
The scene is in the foreground but should pause its work.
case background
The scene isn’t currently visible in the UI.