Flash / Flex / ActionScript/TextField/Animation

Animating a TextField horizontally to x-coordinate 300

 
package {
  import flash.display.*;
  import flash.events.*;
  import flash.text.*;
  public class Main extends Sprite {
    private var t:TextField = new TextField(  );
    public function Main (  ) {
      t.text          = "Hello";
      t.autoSize      = TextFieldAutoSize.LEFT;
      addChild(t);
      addEventListener(Event.ENTER_FRAME, moveTextRight);
    }
    public function moveTextRight (e:Event):void {
      if (t.x <= 300) {
        t.x += 10;
        if (t.x > 300) {
          t.x = 300;
        }
      } else {
        removeEventListener(Event.ENTER_FRAME, moveTextRight);
      }
    }
  }
}

Animating a TextField horizontally to x-coordinate 300, timer version

 
package {
  import flash.display.*;
  import flash.events.*;
  import flash.utils.*;
  import flash.text.*;
  public class Main extends Sprite {
    private var t:TextField = new TextField(  );
    private var timer:Timer;
    public function Main(  ) {
      t.text          = "Hello";
      t.autoSize      = TextFieldAutoSize.LEFT;
      addChild(t);
      timer = new Timer(50, 0);
      timer.addEventListener(TimerEvent.TIMER, moveTextRight);
      timer.start(  );
    }
    public function moveTextRight (e:TimerEvent):void {
      if (t.x <= 300) {
        t.x += 10;
        if (t.x > 300) {
          t.x = 300;
        }
        e.updateAfterEvent(  );  // Update the screen following this function
      } else {
        timer.stop(  );
      }
    }
  }
}

Frame Rate"s Effect on Event.ENTER_FRAME Animations

 
package {
  import flash.display.*;
  import flash.events.*;
  import flash.utils.*;
  import flash.text.*;
  public class Main extends Sprite {
    private var startMsg:TextField = new TextField(  );
    public function Main(  ) {
      var timer:Timer = new Timer(3000, 1);
      timer.addEventListener(TimerEvent.TIMER, timerListener);
      timer.start(  );
      startMsg.autoSize = TextFieldAutoSize.LEFT;
      startMsg.text = "Get Ready!";
      addChild(startMsg);
    }
    private function timerListener (e:TimerEvent):void {
      startMsg.text = "GO!";
    }
  }
}

Timer event

 
package {
  import flash.display.TextField;
  import flash.util.Timer;
  import flash.events.*;
  public class BlinkText extends TextField {
    private var timer:Timer;
    public function BlinkText (delay:Number = 1000) {
      timer = new Timer(delay, 0);
      timer.addEventListener(TimerEvent.TIMER, timerListener);
      timer.start(  );
    }
    private function timerListener (e:TimerEvent):void {
      visible = !visible;
      e.updateAfterEvent(  );
    }
    public function setDelay (newDelay:Number):void {
      timer.delay = newDelay;
    }
    public function startBlink (  ):void {
      timer.start(  );
    }
    public function stopBlink (  ):void {
      visible = true;
      timer.stop(  );
    }
  }
}

To eliminate unnecessary function calls, we unregister moveTextRight( ) for Event.ENTER_FRAME events.

 
package{
    import flash.display.*;
    import flash.text.*;
    import flash.events.*;
    public class Main extends Sprite {
      private var t:TextField = new TextField(  );
    
      public function Main (  ) {
        t.text          = "Hello";
        t.autoSize      = TextFieldAutoSize.LEFT;
        addChild(t);
    
        addEventListener(Event.ENTER_FRAME, moveTextRight);
      }
    
      public function moveTextRight (e:Event):void {
          if (t.x <= 300) {
            t.x += 10;
            if (t.x > 300) {
              t.x = 300;
            }
          } else {
            removeEventListener(Event.ENTER_FRAME, moveTextRight);
          }
    
      }
    }
}