A node used to create a parallax scrolling background. A ParallaxBackground uses one or more [ParallaxLayer] child nodes to create a parallax effect. Each [ParallaxLayer] can move at a different speed using [member ParallaxLayer.motion_offset]. This creates an illusion of depth in a 2D game. If not used with a [Camera2D], you must manually calculate the [member scroll_offset]. Base position offset of all [ParallaxLayer] children. Base motion scale of all [ParallaxLayer] children. If [code]true[/code], elements in [ParallaxLayer] child aren't affected by the zoom level of the camera. Top left limits for scrolling to begin. If the camera is outside of this limit the background will stop scrolling. Must be lower than [member scroll_limit_end] to work. Right bottom limits for scrolling to end. If the camera is outside of this limit the background will stop scrolling. Must be higher than [member scroll_limit_begin] to work. The ParallaxBackground's scroll value. Calculated automatically when using a [Camera2D], but can be used to manually manage scrolling when no camera is present.