@animech-public/playcanvas/build/playcanvas.dbg/src/core/events.js

PlayCanvas WebGL game engine

import { EventHandler } from './event-handler.js';

const events = {
  /**
   * Attach event methods 'on', 'off', 'fire', 'once' and 'hasEvent' to the target object.
   *
   * @param {object} target - The object to add events to.
   * @returns {object} The target object.
   * @example
   * const obj = { };
   * pc.events.attach(obj);
   * @ignore
   */
  attach(target) {
    const ev = events;
    target._addCallback = ev._addCallback;
    target.on = ev.on;
    target.off = ev.off;
    target.fire = ev.fire;
    target.once = ev.once;
    target.hasEvent = ev.hasEvent;
    EventHandler.prototype.initEventHandler.call(target);
    return target;
  },
  _addCallback: EventHandler.prototype._addCallback,
  on: EventHandler.prototype.on,
  off: EventHandler.prototype.off,
  fire: EventHandler.prototype.fire,
  once: EventHandler.prototype.once,
  hasEvent: EventHandler.prototype.hasEvent
};

export { events };