Class that has everything pertaining to a 2D world: A physics space, a canvas, and a sound space. 2D nodes register their resources into the current 2D world.
The RID of this world's canvas resource. Used by the RenderingServer for 2D drawing.
Direct access to the world's physics 2D space state. Used for querying current and potential collisions. When using multi-threaded physics, access is limited to Node._physics_process in the main thread.
The RID of this world's navigation map. Used by the NavigationServer2D.
The RID of this world's physics space resource. Used by the PhysicsServer2D for 2D physics, treating it as both a space and an area.