/// <summary>
/// 获取指定物体的各层级顺序数据（即各层级的sibling Index）
/// </summary>
/// <param name="tran">指定物体</param>
public static GameObjectHierarchyOrderData GetHierarchyOrderData(Transform tran)
{
GameObjectHierarchyOrderData orderData = new GameObjectHierarchyOrderData(tran.gameObject);
Transform parent = tran;
while (parent)
{
orderData.orderData.Insert(0, parent.GetSiblingIndex());
parent = parent.parent;
}
return(orderData);
}
//比较两个物体的层级顺序(true: a的层级顺序>b的层级顺序, false: a < b)
public static bool CompareGameObjectHierarchyOrder(GameObjectHierarchyOrderData a, GameObjectHierarchyOrderData b)
{
int count_a = a.orderData.Count;
int count_b = b.orderData.Count;
int compareCount = Mathf.Min(count_a, count_b); //先比较相同的层级
for (int i = 0; i < compareCount; i++)
{
if (a.orderData[i] != b.orderData[i])
{
return(a.orderData[i] < b.orderData[i]); //同一层级内，sibling越小，处于的位置就越靠上
}
}
return(count_a < count_b); //如果前面没有返回，说明这两个物体为父子关系（这里父子可以指多层的父子关系），那么只要比较层级数量，层级数量越小的越靠上
}
