Enables certain nodes only when approximately visible. The VisibilityEnabler3D will disable [RigidBody3D] and [AnimationPlayer] nodes when they are not visible. It will only affect other nodes within the same scene as the VisibilityEnabler3D itself. [b]Note:[/b] VisibilityEnabler3D uses an approximate heuristic for performance reasons. It doesn't take walls and other occlusion into account. If you need exact visibility checking, use another method such as adding an [Area3D] node as a child of a [Camera3D] node. [b]Note:[/b] VisibilityEnabler3D will not affect nodes added after scene initialization. Returns whether the enabler identified by given [enum Enabler] constant is active. Sets active state of the enabler identified by given [enum Enabler] constant. If [code]true[/code], [RigidBody3D] nodes will be paused. If [code]true[/code], [AnimationPlayer] nodes will be paused. This enabler will pause [AnimationPlayer] nodes. This enabler will freeze [RigidBody3D] nodes. Represents the size of the [enum Enabler] enum.