按名字查找骨骼节点。

    public static Transform SearchBone(Transform current, string name)
            {
                if (current.name.Equals(name))
                    return current;

                for (int i = 0; i < current.childCount; ++i)
                {
                    Transform found = SearchBone(current.GetChild(i), name);

                    if (found != null)
                        return found;
                }
                return null;
            }