GeometryDash3D/js/Cube.js

import { Element } from "./Element.js";

export class Cube extends Element {
    constructor(color) {
        super();

        this.data = new THREE.Mesh(
            new THREE.BoxGeometry(1, 1, 1),
            new THREE.MeshBasicMaterial({ color: color })
        );

        // Create shadows
        this.data.castShadow = true;
    }
}