/**
* DebugDisplayItemFPS
* Displays the current realtime framerate
* @author Zeh
* @version 1.0
*/

package com.zehfernando.display.debug {
	import flash.events.*;	

	public class DebugDisplayItemFPS extends DebugDisplayItem {

		// Private properties
		protected var framesRendered:uint;				// Number of frames rendered since the last update
		
		public function DebugDisplayItemFPS() {
			super();
		}

		override protected function onTick(event:Event = null): void {
			super.onTick(event);
			framesRendered++;
		}
	
		override protected function update(timePassed:uint, includeInterval:Boolean = false): void {
			var fpsNow:Number;
			if (updateRate == 0) {
				fpsNow = 1000 / timePassed;
			} else {
				fpsNow = (framesRendered / timePassed) * 1000;
			}
			caption.text = String(Math.round(fpsNow)) + "fps";
			timeGraph.push(fpsNow / stage.frameRate, includeInterval);
		}

		override protected function resetTimers(includeInterval:Boolean = false): void {
			super.resetTimers(includeInterval);
			framesRendered = 0;
		}
	}
	
}