 			if (FP.fixed)
 			{
 				// fixed framerate
-				_skip = _rate * MAX_FRAMESKIP;
+				_skip = _rate * maxFrameSkip;
 				_last = _prev = getTimer();
-				_timer = new Timer(TICK_RATE);
+				_timer = new Timer(tickRate);
 				_timer.addEventListener(TimerEvent.TIMER, onTimer);
 				_timer.start();
 			}

		public var paused:Boolean = false;
		
		/**
		 * Constructor. Defines startup information about your game.
		 * @param	width			The width of your game.
		 * @param	height			The height of your game.

				_updateTime = _time;
				_delta -= _rate;
				FP.elapsed = (_time - _prev) / 1000;
				if (FP.elapsed > maxElapsed) FP.elapsed = maxElapsed;
				FP.elapsed *= FP.rate;
				_prev = _time;
				
