Simple interval timer for IGE based on the engine's tickDelta

IntervalTimer.js

var IntervalTimer;

IntervalTimer = IgeEntity.extend({
  classId: 'IntervalTimer',
  init: function() {
    IgeEntity.prototype.init.call(this);
    this._acc = 0;
    this._duration = 0;
    this._callback = function() {
      return this.log('no callback provided');
    };
    this._paused = true;
    return this.mount(ige._currentViewport);
  },
  duration: function(val) {
    if (typeof val !== 'undefined') {
      this._duration = val;
      return this;
    } else {
      return this._duration;
    }
  },
  "do": function(val) {
    if (typeof val !== 'undefined') {
      this._callback = val;
      return this;
    } else {
      return this._callback;
    }
  },
  pause: function(val) {
    return this._paused = !!val;
  },
  stop: function() {
    this._paused = true;
    return this.reset();
  },
  start: function() {
    this._paused = false;
    return this._callback.call(this);
  },
  reset: function() {
    this._acc = 0;
    return this._paused = true;
  },
  tick: function(ctx) {
    if (this._paused) {
      return;
    }
    this._acc += ige._tickDelta;
    if (this._acc > this._duration) {
      this._acc -= this._duration;
      this._callback.call(this);
    }
    return IgeEntity.prototype.tick.call(this, ctx);
  }
});