可能初始化的锯齿状数组错误C＃

Question

我使用Jagged游戏对象数组生成平铺地图，我不断收到错误：

  

IndexOutOfRangeException：数组索引超出范围。   （wrapper stelemref）对象：stelemref（object，intptr，object）   Map.GenerateMap（）（在Assets / Scripts / Map.cs：148）   Map.Start（）（在Assets / Scripts / Map.cs：74）

我完全不知道为什么我会收到此错误。下面是我用锯齿状数组初始化编写的完整函数。据我所知，我正在正确初始化数组。

void GenerateMap(){
    mapWidth = Random.Range (5, 25);
    mapHeight = Random.Range (5, 25);

    //Initialise the Jagged Array
    genMapArray = new GameObject [mapHeight][];
    for (int i = 0; i < mapHeight; i++)
        genMapArray [i] = new GameObject [mapWidth];

    //Generate some mountains
    int mountX = Random.Range(1, mapWidth - 1); // Random within 
    int mountY = Random.Range(1, mapHeight - 1); // the map border


    for (int y = 0; y < mapHeight+1; y++) {
        for (int x = 0; x < mapWidth+1; x++) {

            if((y == 0 && x <= mapWidth) || (y <= mapHeight & x == 0) ||
                (y== mapHeight && x <= mapWidth) || (y <= mapHeight && x == mapWidth)){
                genMapArray[y][x] = Tiles[0];
            }else{
                if(y == mountY && x == mountX){
                    genMapArray[y][x] = Tiles[3];
                }else{
                    genMapArray[y][x] = Tiles[1];
                }
            }
        }
    }

    //Draw Tiles on the Screen
    for (int y = 0; y < mapHeight+1; y++) {
        for (int x = 0; x < mapWidth+1; x++) {

            if (useSquareTiles == true && useHexagonTiles == false) {
                GameObject.Instantiate (genMapArray[y][x], new Vector3 (x, mapHeight - y, 0),
                                        Quaternion.Euler (-90, 0, 0));
            }

            if (useHexagonTiles == true && useSquareTiles == false) {
                float hexWidth = 0.75f / Mathf.Cos (Mathf.Deg2Rad * 30.0f); 
                GameObject.Instantiate (genMapArray[y][x], new Vector3 (x * hexWidth, y + (0.5f * Mathf.Abs (x) % 1), 0),
                                        Quaternion.Euler (-90, 0, 0));
            }
        }
    }
}