Enables certain nodes only when approximately visible. The VisibilityEnabler2D will disable [RigidBody2D], [AnimationPlayer], and other nodes when they are not visible. It will only affect nodes with the same root node as the VisibilityEnabler2D, and the root node itself. If you just want to receive notifications, use [VisibilityNotifier2D] instead. [b]Note:[/b] For performance reasons, VisibilityEnabler2D uses an approximate heuristic with precision determined by [member ProjectSettings.world/2d/cell_size]. If you need precise visibility checking, use another method such as adding an [Area2D] node as a child of a [Camera2D] node. [b]Note:[/b] VisibilityEnabler2D 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], [RigidBody2D] nodes will be paused. If [code]true[/code], [AnimatedSprite] nodes will be paused. If [code]true[/code], [AnimationPlayer] nodes will be paused. If [code]true[/code], [Particles2D] nodes will be paused. If [code]true[/code], the parent's [method Node._physics_process] will be stopped. If [code]true[/code], the parent's [method Node._process] will be stopped. 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 [method Node._process] function. This enabler will stop the parent's [method Node._physics_process] function. This enabler will stop [AnimatedSprite] nodes animations. Represents the size of the [enum Enabler] enum.