Static body for 3D physics. A static body is a simple body that can't be moved by external forces or contacts. It is ideal for implementing objects in the environment, such as walls or platforms. In contrast to [RigidBody3D], they don't consume any CPU resources as long as they don't move.
They however have extra functionalities to move and affect other bodies:
[b]Constant velocity:[/b] [member constant_linear_velocity] and [member constant_angular_velocity] can be set for the static body, so even if it doesn't move, it affects other bodies as if it was moving (this is useful for simulating conveyor belts or conveyor wheels).
[b]Transform change:[/b] Static bodies can be also moved by code. Unless [member kinematic_motion] is enabled, they are just teleported in this case and don't affect other bodies on their path.
[b]Kinematic motion:[/b] Static bodies can have [member kinematic_motion] enabled to make them kinematic bodies that can be moved by code and push other bodies on their path.
The body's constant angular velocity. This does not rotate the body (unless [member kinematic_motion] is enabled), but affects other bodies that touch it, as if it were rotating.
The body's constant linear velocity. This does not move the body (unless [member kinematic_motion] is enabled), but affects other bodies that touch it, as if it were moving.
If [code]true[/code], the body will act the same as a [RigidBody3D] in [constant RigidBody3D.MODE_KINEMATIC] mode.
When the body is moved manually, either from code or from an [AnimationPlayer] (with [member AnimationPlayer.playback_process_mode] set to [code]physics[/code]), the physics will automatically compute an estimate of their linear and angular velocity. This makes them very useful for moving platforms or other AnimationPlayer-controlled objects (like a door, a bridge that opens, etc).
