根据moser1991年的文章设计的forward star，可寻找空间内各节点的相邻点，适用于一个网格由8个节点均匀包围，且纵横节点总数均为奇数的情况，可根据实际情况进行改编-According moser1991 designing forward star, can find space adjacent points within each node for a uniform grid surrounded by eight nodes and the total number of vertical and horizontal nodes are an odd number, can be adapted according to the actual situation