Method updateComponents

src/core/a-entity.js:387–432

* Initialize or update all components. * Build data using initial components, defined attributes, mixins, and defaults. * Update default components before the rest. * * @property {function} getExtraComponents - Can be implemented to include component data * from other sources (e.g.,

()

   *   from other sources (e.g., implemented by primitives).
   */
  updateComponents () {
    var data;
    var extraComponents;
    var i;
    var name;
    var componentsToUpdate = this.componentsToUpdate;

    if (!this.hasLoaded && !this.isLoading) { return; }

    // Gather mixin-defined components.
    for (i = 0; i < this.mixinEls.length; i++) {
      for (name in this.mixinEls[i].componentCache) {
        if (isComponent(name)) { componentsToUpdate[name] = true; }
      }
    }

    // Gather from extra initial component data if defined (e.g., primitives).
    if (this.getExtraComponents) {
      extraComponents = this.getExtraComponents();
      for (name in extraComponents) {
        if (isComponent(name)) { componentsToUpdate[name] = true; }
      }
    }

    // Gather entity-defined components.
    for (i = 0; i < this.attributes.length; ++i) {
      name = this.attributes[i].name;
      if (OBJECT3D_COMPONENTS.indexOf(name) !== -1) { continue; }
      if (isComponent(name)) { componentsToUpdate[name] = true; }
    }

    // object3D components first (position, rotation, scale, visible).
    for (i = 0; i < OBJECT3D_COMPONENTS.length; i++) {
      name = OBJECT3D_COMPONENTS[i];
      if (!this.hasAttribute(name)) { continue; }
      this.updateComponent(name, this.getDOMAttribute(name));
    }

    // Initialize or update rest of components.
    for (name in componentsToUpdate) {
      data = mergeComponentData(this.getDOMAttribute(name),
                                extraComponents && extraComponents[name]);
      this.updateComponent(name, data);
      delete componentsToUpdate[name];
    }
  }

  /**
   * Initialize, update, or remove a single component.