        book.action[i] = book.mixer.clipAction(anim)
              book.action[i].play()
            })

            book.traverse(child => {
              if (child.isMesh) {
                child.castShadow = child.receiveShadow = false
                child.material.metalness = 0
                child.material.roughness = 1

                if (/mesh/i.test(child.name)) {
                  this.physics.add.existing(child, {
                    shape: 'concave',
                    mass: 0,
              