text: class Cubes {
      constructor(x = 0, y = 0, z = 0, color = 0xfff444) {
          this.x = x;
          this.y = y;
          this.z = z;
          this.color = color;
      }
  
      build() {
          let cubeGeo = new THREE.BoxGeometry();
          let cubeMat = new THREE.MeshLambertMaterial({color: this.color, wireframe: false});
          let cube = new THREE.Mesh(cubeGeo, cubeMat);
          scene.add(cube);
          cube.position.x = this.x;
          cube.position.y = this.y;
          cube.position.z = this.z;
      }
  }