How to add Score and Timer in Adobe flash

There are many ways to do countdown timer. Here are two examples to countdown from 60 seconds to zero. Theoretically they should work the same, but practically not always. Since heavy processing can slow down frame rate and hence method #2 will not be accurate. Really depends on your need.

#1, using Timer class

var delay:Number = 1000; //the delay between timer events, in milliseconds.

var remainingTime:int = 60;

var countDownTimer:Timer = new Timer(DELAY);

countDownTimer.addEventListener(TimerEvent.TIMER, countDownUpdate);

countDownTimer.start();

function countDownUpdate(evt:TimerEvent):void{

     //1 second passed, do something

     remainingTime--;

     if(remainingTime == 0){

          //60 seconds passed, do something

          countDownTimer.stop();

          countDownTimer.removeEventListener(TimerEvent.TIMER, countDownUpdate);

     }

}

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#2, using onEnterFrame event

var frameCount:int= 0;

var remainingTime:int = 60;

addEventListener(Event.ENTER_FRAME, countDownEnterFrame);

function countDownEnterFrame(e:Event):void{

     frameCount++;

     if(frameCount == Stage.frameRate){

          //1 second passed, do something

          frameCount = 0;

          remainingTime--;

          if(remainingTime == 0){

               //60 seconds passed, do something

               countDownTimer.stop();

               countDownTimer.removeEventListener(TimerEvent.TIMER, countDownUpdate);

          }

     }

}

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As for your score part. It really depends on what exactly you're looking for. There are a lot of ways to do it, and for each way to do it there are even more methods to implement it. Maybe you can try to describe in more details of what you have in mind, so people can help you easier. Don't worry if one method doesn't work for you, since there are so many ways to do things in Flash with AS3. Good luck