public virtual void Update()
{
RunLoop();
if (_purpose == null)
{
return;
}
//判断到达目标点的距离
var dis = Util.Distance2_5D(transform.position, _purpose.targetPos);
if (dis < _purpose.stopDistance)
{
OnArrived();
return;
}
//驱动目标
_purpose.Loop();
}