time-based solution for framerate drop

gistfile1.hx

class GameClass extends FlxGame
{		
	
	private var useCustomFpsCounter:Bool = false;
	
	public function new()
	{

		// Launch your game here
		
		// INIT FRAME COUNTER
		Lib.current.stage.addEventListener(Event.ENTER_FRAME, frameRateUpdate);
		if (useCustomFpsCounter)
		{
      framecountertext = new TextField();
  		framecountertext.defaultTextFormat = new TextFormat(FlxAssets.FONT_DEBUGGER, 20, 0xbbbbbb, false, false, false, null, null, TextFormatAlign.LEFT );
  		framecountertext.text = "60 - 60";
  		framecountertext.x = Lib.current.stage.stageWidth/2 - framecountertext.textWidth /2;
  		framecountertext.y = 60;
  		framecountertext.width = 200;		  
			Lib.current.stage.addChild(framecountertext);		
		
		}
	}
	
	public static var elapsedTime:Int;   // use this anywhere to compensate for frame drops...
	private var myticks:Int;
	private var mytotal:Int;
	private var timecounter:Int;
	private var framecounter:Int;
	private var framecountertext:TextField;
	
	private function frameRateUpdate(?FlashEvent:Event):Void
	{
		myticks = Lib.getTimer();
		elapsedTime = myticks - mytotal;
		mytotal = myticks;
		
		timecounter += elapsedTime;
		framecounter++;
		if (useCustomFpsCounter && timecounter > 1000)
		{
			framecountertext.text = (framecounter -1) + " / " + 60;
			framecounter = 0;
			timecounter = 0;
		}
	}
}