无向图 解决Unity地图上固定网络上，标记走固定步数能到达的位置

首先需要了解无向图的定义

　　参考：https://www.cnblogs.com/wxgblogs/p/5572391.html

 

我们选择链表的方式进行操作。

　　

    int StartPositon;
    int prePosition;

    static List<PointEdge> myEdges;
    static string Final_Positions = "";

    public struct PointEdge {
        public int currentPosition;
        public int[] connectArray;
        public PointEdge(int count_temp, int[] intPositon)
        {
            currentPosition = count_temp;
            connectArray = intPositon;
        }
    }

    public void FindTipPosition(int curPosition,int oldPosition,PointEdge edges,int step_count)
    {
        if (step_count == 0)
        {
            HightLightTips(curPosition);
            Final_Positions = Final_Positions+","+curPosition.ToString();
        }

        else
            foreach (var edge in edges.connectArray)
            {
                if (edge != oldPosition)
                    FindTipPosition(edge, curPosition, myEdges[edge], step_count - 1);
                else
                    Debug.Log(oldPosition + "不回头走" + edge);
            }
    }

    void Start () {
        myEdges = Read("Assets/Resources/RED_PATH.txt");

        Debug.Log(myEdges.Count);
        //CheckData(myEdges);
        FindTipPosition(0, -1, myEdges[0], 6);
        Debug.Log(Final_Positions);

    }

 这里不知道能不能使用递归，希望有大佬能教我一下，感激！