沿二维网格移动值

Question

我正在尝试编写一个应用程序，用户在其中输入一个整数

1 = 上涨，
2 = 向下
3 = 左
4 = 正确并且
x ：沿 3x3 网格移动。

我不确定我做错了什么，所以任何帮助将不胜感激。

#include "stdafx.h"
#include <iostream>

using namespace std;

char player = 'x';
char grid[3][3] = {{ player, '.' ,'.'},{'.', '.', '.' },{'.', '.', '.' } };

void Draw() {
    for (int row = 0; row <= 2; row++) {
        for (int col = 0; col <= 2; col++) {
        cout << grid[row][col];
    }
        cout << endl;
    }
}

int main() {
int posX = 0;
int posY = 0;
int in;
Draw();
while (1) {
    cin >> in;
    if (in == 1) {
        grid[posY][posX] = '.';
        posY = posY - 1;
        grid[posY][posX] = player;
    }
    else if (in == 2) {
        grid[posY][posX] = '.';
        posY = posY + 1;
        grid[posY][posX] = player;
    }
    else if (in == 3) {
        grid[posY][posX] = '.';
        posX = posX - 1;
        grid[posY][posX] = player;
    }
    else if (in == 4) {
        grid[posY][posX] = '.';
        posX = posX + 1;
        grid[posY][posX] = player;
    }
    else {
        grid[posY][posX] = player;
    }
    system("cls");
    Draw();
}
cin.get();
return 0;
}

Answer 1

我已经编译过了，一切正常....但是你必须检查玩家是否在网格的最大一侧，然后如果玩家想移动你必须阻止他，当然是因为墙; > 示例：

    while (1)
{
    cin >> in;
    if (in == 1)
    {
        if(posY>0) // HERE
        {
            grid[posY][posX] = '.';
            posY = posY - 1;
            grid[posY][posX] = player;
        }
    }
    ...
}

沿二维网格移动值

Moving a value along a 2d grid

c++

arrays

grid

char