Class that has everything pertaining to a 2D world. Class that has everything pertaining to a 2D world. A physics space, a visual scenario and a sound space. 2D nodes register their resources into the current 2D world. Retrieve the [RID] of this world's canvas resource. Used by the [VisualServer] for 2D drawing. Retrieve the state of this world's physics space. This allows arbitrary querying for collision. Retrieve the [RID] of this world's physics space resource. Used by the [Physics2DServer] for 2D physics, treating it as both a space and an area.