C ++控制台游戏，故障重新切换语句以在二维数组中移动字符

Question

您好，我正在为学校编写一个小型主机游戏。如果有的话，问题是推动'w'和'a'有效（它们将2d数组的行或col元素减去1）但'd'和's'不起作用（它们将1添加到行或col二维数组的元素）。如果您尝试该代码，您会注意到按 s 或 d 会使屏幕出现故障。

请参考CGame类的Move()和Update()。

TY

#include <iostream>
#include <string>
#include <conio.h>
#include <ctime>
#include <cstdlib>

using namespace std;

const char PLAYER = 'H';
const char WALLS = '=';
const int ROWS = 20;
const int COLS = 50;

//Map class generates map, player and enemies
class CMap{

public:
    char m_cMap[20][50];

    //Map constructor
    CMap(int _row, int _col){



        //Spawn boarders
        for (int i = 0; i < ROWS; i++){
            for (int j = 0; j < COLS; j++){
                if (i == 0 || i == ROWS - 1){
                    m_cMap[i][j] = WALLS;
                }else if (j == 0 || j == COLS - 1){
                    m_cMap[i][j] = WALLS;
                }else{
                    m_cMap[i][j] = ' ';
                }
            }

        }

        //Spawn player
        m_cMap[_row][_col] = PLAYER;
    }


};

class CGame{

private:

    void Move(CMap& _map, char _move, int _i, int _j){

        _map.m_cMap[_i][_j] = ' ';

        switch (_move){
        case 'w':
        case 'W':
            _i--;
            break;
        case 's':
        case 'S':
            _i++;
            break;
        case 'a':
        case 'A':
            _j--;
            break;
        case 'd':
        case 'D':
            _j++;
            break;
        default: 
            break;
        }
        _map.m_cMap[_i][_j] = PLAYER;

    }

public:
    //Functions for the main gameloop
    void Update(CMap& _map, char _move){

        for (int i = 0; i < ROWS; i++){
            for (int j = 0; j < COLS; j++){
                //Move Player
                if (_map.m_cMap[i][j] == PLAYER){
                    Move(_map, _move, i, j);
                }
                //Move Enemies...
            }
        }

    }



    void Check(CMap _map){}

    void Display(CMap _map){

        system("CLS");

        for (int i = 0; i < ROWS; i++){
            for (int j = 0; j < COLS; j++){
                cout << _map.m_cMap[i][j];
            }
            cout << endl;
        }
    }
};




int main(){
    //Generate random numbers for player spawn
    srand(time(0));
    int randRow = (rand() % 17) + 1;
    int randCol = randRow + 20;

    //Instantiate the game and map objects
    CGame game;
    CMap map(randRow, randCol);

    //Game loop
    bool gg = false;
    while (!gg){

        //PlayerController
        char move = 0;
        if (_kbhit){
            move = _getch();
        }


        game.Update(map, move);


        //game.Check(map);
        game.Display(map);


    }


}

Answer 1

问题在于，当您移动播放器时，您不会打破循环。由于玩家再次被检测到，他们再次移动它。像这样修改你的更新函数：

//Functions for the main gameloop
void Update(CMap& _map, char _move){
    bool moved = false;
    for (int i = 0; i < ROWS; i++){
        for (int j = 0; j < COLS; j++){
            //Move Player
            if (_map.m_cMap[i][j] == PLAYER){
                Move(_map, _move, i, j);
                moved = true;
                break;
            }

            //Move Enemies...
        }
        if (moved)
                break;
    }

}