package
{
 import flash.display.Sprite;
 import flash.events.MouseEvent;
 import flash.text.TextField;
 
 public class animation_ch03_MouseDistance extends Sprite {
  private var sprite1:Sprite;
  private var textField:TextField;
  
  public function animation_ch03_MouseDistance() {
   init();
  }
//@ init(s)
  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);
  }
//@ move(s0
  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();
  }
 }
}