A resource that holds all components of a 3D world, such as a visual scenario and a physics space. Class that has everything pertaining to a world: A physics space, a visual scenario, and a sound space. 3D nodes register their resources into the current 3D world. $DOCS_URL/tutorials/physics/ray-casting.html The default [CameraAttributes] resource to use if none set on the [Camera3D]. Direct access to the world's physics 3D space state. Used for querying current and potential collisions. When using multi-threaded physics, access is limited to [method Node._physics_process] in the main thread. The World3D's [Environment]. The World3D's fallback environment will be used if [member environment] fails or is missing. The [RID] of this world's navigation map. Used by the [NavigationServer3D]. The World3D's visual scenario. The World3D's physics space.