extends RigidBody

func _on_Box_sleeping_state_changed():
    if self.sleeping:
        $MeshInstance.get_surface_material(0).albedo_color = Color( 0.0, 1.0, 0.0, 1 )
    else:
        $MeshInstance.get_surface_material(0).albedo_color = Color( 0.0, 0.0, 1.0, 1 )