mdx-m3-viewer/src/viewer/handlers/mdx/eventobjectspn.js

A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.

/**
 * An MDX spawned model object.
 */
export default class EventObjectSpn {
  /**
   * @param {MdxEventObjectEmitter} emitter
   */
  constructor(emitter) {
    this.emitter = emitter;
    this.emitterView = null;
    this.health = 0;
    this.internalResource = emitter.modelObject.internalResource.addInstance();
  }

  /**
   * @param {EventObjectEmitterView} emitterView
   */
  bind(emitterView) {
    let instance = this.internalResource;
    let node = emitterView.instance.nodes[this.emitter.modelObject.index];

    this.emitterView = emitterView;

    instance.setSequence(0);
    instance.setTransformation(node.worldLocation, node.worldRotation, node.worldScale);
    instance.show();

    emitterView.instance.scene.addInstance(instance);

    this.health = 1;
  }

  /**
   * @param {number} offset
   * @param {number} dt
   */
  render(offset, dt) {
    let instance = this.internalResource;

    // Once the sequence finishes, this event object dies
    if (instance.frame >= instance.model.sequences[0].interval[1]) {
      this.health = 0;

      instance.hide();
    }
  }
}