Flash / Flex / ActionScript/Animation/Animation

Animating by Frames

   <source lang="java">

package {

   import flash.display.*;
   import flash.events.Event;
   public class Main extends Sprite
   {
       public function FrameAnimation()
       {
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
       }
       protected function onEnterFrame(event:Event):void
       {
           trace("animating");
       }
   }

}

       </source>
   
  

Animating with Pure ActionScript

   <source lang="java">

package {

   import flash.display.*;
   import flash.events.TimerEvent;
   import flash.utils.Timer;
   public class Main extends Sprite
   {
       protected var myShape:DisplayObject;
       public function Main()
       {
           var fps:int = 60;
           var mspf:int = Math.round(1 / fps * 1000);
           var t:Timer = new Timer(mspf);
           t.addEventListener(TimerEvent.TIMER, onTimer);
           t.start();
       var s:Sprite = new Sprite();
       addChild(s);
           myShape = getChildAt(0);
       }
       protected function onTimer(event:TimerEvent):void
       {
           myShape.x += 0.5;
           event.updateAfterEvent();
       }
   }

}

       </source>
   
  

Animation and Speed

   <source lang="java">

package {

   import flash.display.*;
   import flash.events.Event;
   import flash.utils.getTimer;
   public class Main extends Sprite
   {
       protected const SPEED:Number = 50; //50 pixels per second
       protected var myShape:DisplayObject;
       protected var lastTime:int;
       public function Main ()
       {
       addEventListener(Event.ENTER_FRAME, onEnterFrame);
       lastTime = getTimer();
       var s:Sprite = new Sprite();
       addChild(s);
       myShape = getChildAt(0);
       }
       protected function onEnterFrame(event:Event):void
       {
          var time:int = getTimer();
           myShape.x += SPEED * (time - lastTime) / 1000;
           lastTime = time;
      }
   }

}

       </source>
   
  

A timer function-based animation

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.events.Event;
   import flash.events.TimerEvent;
   import flash.utils.Timer;
   
   public class Main extends Sprite {
       private var _sprite:Sprite = new Sprite(  );
       private var _vx:Number = 1;
       private var _vy:Number = 1;
       private var _timer:Timer;
       
       public function Main(  ) {
           _sprite.graphics.beginFill(0x0000ff, 100);
           _sprite.graphics.drawCircle(0, 0, 25);
           _sprite.graphics.endFill(  );
           _sprite.x = 50;
           _sprite.y = 100;
           addChild(_sprite);
           _timer = new Timer(30);
           _timer.addEventListener("timer", onTimer);
           _timer.start(  );
       }
       
       public function onTimer(event:TimerEvent):void {
           _sprite.x += _vx;
           _sprite.y += _vy;
       }
   }    

}

       </source>
   
  

Moving an Object

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.events.Event;
   
   public class Main extends Sprite {
       private var _sprite:Sprite = new Sprite(  );
       private var _vx:Number = 3;
       
       public function Main(  ) {
           _sprite.graphics.beginFill(0x0000ff, 100);
           _sprite.graphics.drawCircle(0, 0, 25);
           _sprite.graphics.endFill(  );
           _sprite.x = 50;
           _sprite.y = 10;
           addChild(_sprite);
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
       }
       
       public function onEnterFrame(event:Event):void {
           _sprite.x += _vx;
       }
   }    

}

       </source>
   
  

Programmatic Animation

   <source lang="java">

package{

   import flash.display.*;
   import flash.text.*;
   
   public class Main extends Sprite {
     public function Main(  ) {
       var t:TextField = new TextField(  );
       t.text          = "Hello";
       t.autoSize      = TextFieldAutoSize.LEFT;
       addChild(t);
   
       while (t.x <= 300) {
         t.x += 10;
       }
     }
   }

}

       </source>