gistfile1.as

package
{
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.net.URLLoader;
	import flash.net.URLLoaderDataFormat;
	import flash.net.URLRequest;
	import flash.utils.getTimer;
	
	/**
	 * ...
	 * @author jacky
	 */
	public class Main extends Sprite
	{
		public var counter:MovieClip;
		
		private var loader:URLLoader;
		private var eventDate:Date;
		private var eventMillisecs:Number;
		private var serverTime:Number;
		
		private var msecs:Number;
		private var secs:Number;
		private var mins:Number;
		private var hours:Number;
		private var days:Number;
		
		private var str_msecs:String;
		private var str_secs:String;
		private var str_mins:String;
		private var str_hours:String;
		private var str_days:String;
		private var arrTxt:Array;
		private var _active:Boolean = false;
		
		public function Main():void
		{
			if (stage)
				init();
			else
				addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init(e:Event = null):void
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			// entry point
			
			/*
			 * 顯示日期格示
			 * arrTxt = ["MovieClip name"...]
			 * 000.00.00.00
			 * arrTxt = ["days_0", "days_1", "days_2", "hours_0", "hours_1", "mins_0", "mins_1", "secs_0", "secs_1"];
			 * 000.00.00.00.000
			 * arrTxt = ["days_0", "days_1", "days_2", "hours_0", "hours_1", "mins_0", "mins_1", "secs_0", "secs_1", "msecs_0", "msecs_1", "msecs_2"];
			 */
			arrTxt = ["days_0", "days_1", "days_2", "hours_0", "hours_1", "mins_0", "mins_1", "secs_0", "secs_1", "msecs_0", "msecs_1", "msecs_2"];

			setEventDate();
			
			getServerTime();
		}
		
		/*
		 * 設定日期
		 * Date( year, month-1, date [, hour [, minute [, second [, millisecond]]]])
		 * ie: 2011 11 15 15:40
		 */
		private function setEventDate():void
		{
			eventDate = new Date(2011, 11, 17, 10, 00);
			eventMillisecs = eventDate.getTime();
		}

		/*
		 * 取得 server 時間
		 * <?php
		 * echo "time=" . time();
		 * ?>
		 */
		private function getServerTime():void 
		{
			loader = new URLLoader();
			loader.dataFormat = URLLoaderDataFormat.VARIABLES;
			loader.addEventListener(Event.COMPLETE, loadComplete);
			var request:URLRequest = new URLRequest();
			request.url = "http://wwwins.phpfogapp.com/gettime.php";
			loader.load(request);
		}
		
		private function loadComplete(e:Event):void
		{
			// php time() returns seconds and not milliseconds
			serverTime = Number(e.target.data.time) * 1000 - getTimer();
			if (!_active) {
				_active = true;
				addEventListener(Event.ENTER_FRAME, countDown);
			}
		}
		
		private function countDown(e:Event):void
		{
			// 用 getTimer 計算時間
			var currentMillisecs:Number = serverTime + getTimer();
			msecs = eventMillisecs - currentMillisecs;
			
			if (msecs <= 0) {
				trace("END");
				return;
			}
			
			secs = Math.floor(msecs / 1000); // 1000 milliseconds make a second
			mins = Math.floor(secs / 60); // 60 seconds make a minute
			hours = Math.floor(mins / 60); // 60 minutes make a hour
			days = Math.floor(hours / 24); // 24 hours make a second

			str_msecs = String(msecs % 1000);
			str_secs = String(secs % 60);
			str_mins = String(mins % 60);
			str_hours = String(hours % 24);
			str_days = String(days);

			while (str_msecs.length < 3) str_msecs = "0" + str_msecs;
			if (str_secs.length < 2) str_secs = "0" + str_secs;
			if (str_mins.length < 2) str_mins = "0" + str_mins;
			if (str_hours.length < 2) str_hours = "0" + str_hours;
			while (str_days.length < 3) str_days = "0" + str_days;

			//trace(str_days, str_hours, str_mins, str_secs)
			updateCounter();
		}
		
		private function updateCounter():void 
		{
			var i:int = 0;
			var mc:MovieClip;
			var mcn:String;
			var c:String;
			var n:String;
			var len:int = arrTxt.length;
			for (i = 0; i < len; i++) {
				n = arrTxt[i];
				mc = counter[n];
				mcn = n.split('_')[0];
				c = n.split('_')[1];
				var frame:uint = 1 + uint(this["str_" + mcn].charAt(c));
				if (mc.currentFrame != frame) mc.gotoAndStop(frame);
			}
		}
	
	}

}