FreamCounterClass.as

package 
{
	import flash.utils.*;
 
	public class FreamCounterClass {
 
		private static var freamSkipMax:uint = 6;
		private static var freamLostMax:uint = 16;
		//-------------------------------------------------------------------------------
		private var freamRate:Number = 60;
		private var freamTime:Number = 16.667;
		private var freamCount:int = 1;
 
		private var lastProcessTime:uint = 0;
		private var vatulFream:Number = 0;
		//-------------------------------------------------------------------------------
		public function FreamCounterClass( _freamRate:Number = 60 ) {
			freamRate = _freamRate;
			freamTime = 1000 / freamRate;
		}
		//-------------------------------------------------------------------------------
		public function set virtualFreamRate (_freamRate:Number):void {
			freamRate = _freamRate;
			freamTime = 1000 / freamRate;
		}
 
		public function get virtualFreamRate ():Number {
			return freamRate;
		}
		//-------------------------------------------------------------------------------
		public function get virtualFreamCount ():uint {
			return freamCount;
		}
		//-------------------------------------------------------------------------------
		public function resetCount ():void {
			lastProcessTime = 0;
			return ;
		}
		//-------------------------------------------------------------------------------
		public function nextFream():uint {
			var timeStamp:uint = getTimer();
 
			if(lastProcessTime != 0){
				vatulFream += (timeStamp - lastProcessTime) / freamTime;
				if (vatulFream > freamLostMax) vatulFream = freamLostMax;
				freamCount = ((vatulFream + 0.25)|0);
				if(freamCount >= freamSkipMax) freamCount = freamSkipMax;
				vatulFream -= freamCount;
				if(vatulFream <= -0.5) vatulFream = -0.5;
			}
			lastProcessTime = timeStamp;
			return freamCount;
		}
		//-------------------------------------------------------------------------------
	}
 
}