ape物理引擎中的对象拖动实现方法

粒子对象.sprite.addEventListener(MouseEvent.MOUSE_DOWN, downHandle);
粒子对象.sprite.addEventListener(MouseEvent.MOUSE_UP, upHandle);
function downHandle(e:MouseEvent):void
{
e.target.startDrag();
removeEventListener(Event.ENTER_FRAME, run);
}
function upHandle(e:MouseEvent):void
{
e.target.stopDrag();
addEventListener(Event.ENTER_FRAME, run);
}