Æliens

    private function init():void {
     sprite1 = new Sprite();
     addChild(sprite1);
     sprite1.graphics.beginFill(0x000000);
     sprite1.graphics.drawRect(-2, -2, 4, 4);
     sprite1.graphics.endFill();
     sprite1.x = stage.stageWidth / 2;
     sprite1.y = stage.stageHeight / 2;
     
     textField = new TextField();
     addChild(textField);
     stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
    }
  

    public function onMouseMove(event:MouseEvent):void {
     graphics.clear();
     graphics.lineStyle(1, 0, 1);
     graphics.moveTo(sprite1.x, sprite1.y);
     graphics.lineTo(mouseX, mouseY);
     var dx:Number = sprite1.x - mouseX;
     var dy:Number = sprite1.y - mouseY;
     var dist:Number = Math.sqrt(dx * dx + dy * dy);
     textField.text = dist.toString();
    }
   }
  }