Enables certain nodes only when visible. The VisibilityEnabler will disable [RigidBody] and [AnimationPlayer] nodes when they are not visible. It will only affect other nodes within the same scene as the VisibilityEnabler itself. If [code]true[/code], [RigidBody] nodes will be paused. If [code]true[/code], [AnimationPlayer] nodes will be paused. This enabler will pause [AnimationPlayer] nodes. This enabler will freeze [RigidBody] nodes. Represents the size of the [enum Enabler] enum.