def update_root_nodepath(self, nodepath):
entity = self._entity
component = self._class_component
# Find appropriate mesh source
mesh_name = component.mesh_name
if mesh_name is None:
physics_node = BulletRigidBodyNode()
# Load mesh from first MeshComponent
for cls_component in entity.components.values():
if isinstance(cls_component, MeshComponent):
shape = self._shape_from_mesh_component(
entity, cls_component)
physics_node.add_shape(shape)
break
else:
physics_node = self._node_from_bam_name(entity, mesh_name)
# Set mass
if component.mass is not None:
physics_node.set_mass(component.mass)
physics_node.notify_collisions(True)
physics_node.set_deactivation_enabled(False)
physics_nodepath = NodePath(physics_node)
nodepath.reparent_to(physics_nodepath)
self.body = physics_node
self._nodepath = physics_nodepath
return physics_nodepath
