      collisionFlags: 1,
                    autoCenter: false
                  })
                  child.body.setAngularFactor(0, 0, 0)
                  child.body.setLinearFactor(0, 0, 0)
                }
              }
            })
          }
          const addMan = async () => {
            const object = await this.load.gltf('man')
            const man = object.scene.children[0]

            this.man = new ExtendedObject3D()
            this.man.name = 'man'
            this.man.rotateY(Math.