public void init(Transform target, int lifeMax, List <LifeBarData> data)
{
_currentIndex = 0;
_target = target;
_offset = GetOffset(target);
_data = data;
_nextBar = transform.Find("NextBar").gameObject.AddComponent <LifeBarItem>();
_currentBar = transform.Find("CurrentBar").gameObject.AddComponent <LifeBarItem>();
_nextBar.Init();
_currentBar.Init();
RectTransform rect = GetComponent <RectTransform>();
_ratio = rect.rect.width * data.Count / lifeMax; //每一滴血所代表的血条宽度
SetBarData(_currentIndex, data);
}
