Enable certain nodes only when visible.
The VisibilityEnabler2D will disable [RigidBody2D], [AnimationPlayer], and other nodes when they are not visible. It will only affect other nodes within the same scene as the VisibilityEnabler2D itself.
This enabler will pause [AnimationPlayer] nodes.
This enabler will freeze [RigidBody2D] nodes.
This enabler will stop [Particles2D] nodes.
This enabler will stop the parent's _process function.
This enabler will stop the parent's _physics_process function.