Question

我是第一年的计算机工程师，所以我在编写C ++方面有点小，无论如何我正在制作一个游戏，其中有两个太空飞船相互射击。我目前通过使用while循环和GetASyncKeyState函数成功完成了第一次太空飞船移动。但现在我正在制造子弹旅行。我用了循环，我确实成功地让子弹向上移动。但是有一个问题，我不能移动飞船直到for循环停止或子弹到达控制台窗口的顶部（我使用控制台顺便说一句）。有没有办法同时运行for循环？或者同时运行两个不同的功能，因为GameMovement（）用于太空船的移动，而BulletTravel（）用于子弹。我从GameMovement（）调用BulletTravel（）。

void GameMovements()
{
bool FirstInitialization = true;
int Player1XCoordinate = 55, Player2XCoordinate = 55;
int Player1YCoordinateU = 28, Player1YCoordinateD = 29;


while (true)
{
    BulletPattern(Player1XCoordinate);

    if (FirstInitialization == true)
    {
        GameBorderAndStatus();
        SetCoordinate(Player1XCoordinate, Player1YCoordinateU);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinateD);
        cout << "^==|==^ \n";
        FirstInitialization = false;
    }

    //MOVEMENTS FOR PLAYER 1
    else if (GetAsyncKeyState(VK_LEFT) && Player1XCoordinate != 16)
    {
        system("cls");
        GameBorderAndStatus();

        Sleep(10);
        Player1XCoordinate -= 3;
        SetCoordinate(Player1XCoordinate, Player1YCoordinateU);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinateD);
        cout << "^==|==^ \n";
    }
    else if (GetAsyncKeyState(VK_RIGHT) && Player1XCoordinate != 94)
    {
        system("cls");
        GameBorderAndStatus();
        Player1XCoordinate += 3;

        Sleep(10);
        SetCoordinate(Player1XCoordinate, Player1YCoordinateU);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinateD);
        cout << "^==|==^ \n";
    }
    else if (GetAsyncKeyState(VK_UP) && Player1YCoordinateU != 24)
    {
        system("cls");
        GameBorderAndStatus();
        Player1YCoordinateU -= 2;
        Player1YCoordinateD -= 2;

        Sleep(10);
        SetCoordinate(Player1XCoordinate, Player1YCoordinateU);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinateD);
        cout << "^==|==^ \n";
    }
    else if (GetAsyncKeyState(VK_DOWN) && Player1YCoordinateU != 28)
    {
        system("cls");
        GameBorderAndStatus();
        Player1YCoordinateU += 2;
        Player1YCoordinateD += 2;

        Sleep(10);
        SetCoordinate(Player1XCoordinate, Player1YCoordinateU);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinateD);
        cout << "^==|==^ \n";
    }

 }
}

void GameBorderAndStatus()
{
       //Draw game border
      for (int i = 0; i < 31; i++)
      {
         SetCoordinate(15, i);
         cout << "|";
         SetCoordinate(104, i);
         cout << "|";
      }

 }

void BulletPattern(int Player1MuzzleLocation)
{
    for (int i = 25; i != 3; i--)
    { 
       Sleep(100);
       SetCoordinate(Player1MuzzleLocation + 3, i);

    }
}

 void SetCoordinate(int CoordinateX, int CoordinateY)
 {
     COORD Coordinate;
     Coordinate.X = CoordinateX;
     Coordinate.Y = CoordinateY;
     SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), Coordinate);
 }

Answer 1

不是使用两个不同的函数并在每个函数中移动一个对象，而是可以找到更好的结果，跟踪每个对象应该在哪里，并使用一个函数来绘制两者。

由于缺少某些函数和变量声明（例如，我没有看到你实际上正在绘制一个子弹 - 可能是你BulletPattern中的一个错误，因此很难说你的代码中发生了什么。？），但这样的事情可能会起到作用：

void GameMovements()
{
    while (true)
    {        
        //MOVEMENTS FOR PLAYER 1
        if (GetAsyncKeyState(VK_LEFT) && Player1XCoordinate != GAMEBOARD_LEFT)
        {
            Player1XCoordinate -= 3;
        }
        else if (GetAsyncKeyState(VK_RIGHT) && Player1XCoordinate != GAMEBOARD_RIGHT)
        {
            Player1XCoordinate += 3;
        }
        else if (GetAsyncKeyState(VK_UP) && Player1YCoordinate != SPACESHIP_TOP)
        {
            Player1YCoordinate -= 2;
        }
        else if (GetAsyncKeyState(VK_DOWN) && Player1YCoordinate != SPACESHIP_BOTTOM)
        {
            Player1YCoordinate += 2;
        }

        Sleep(10);

        UpdateBulletPosition();
        DrawObjects();
    }
}

void UpdateBulletPosition()
{
  //if the bullet hits the top of the screen, remove it
  if (bulletYCoordinate == GAMEBOARD_TOP)
  {
      bulletXCoordinate = 0;
      bulletYCoordinate = 0;
  }

  //I assume you're automatically generating bullets whenever possible; you'll have to adjust this conditional if that's not the case

  //no bullet? generate one
  if (bulletXCoordinate == 0)
  {
      bulletXCoordinate = Player1XCoordinate + 3;
      bulletYCoordinate = 25;
  }
  else
  {
      bulletYCoordinate--;

      Sleep(100);
  }
}

void DrawObjects()
{
        //wipe the screen and show status first
        system("cls");
        GameBorderAndStatus();

        SetCoordinate(Player1XCoordinate, Player1YCoordinate);
        cout << "   ^  \n";
        SetCoordinate(Player1XCoordinate, Player1YCoordinate + 1);
        cout << "^==|==^ \n";

        //only draw the bullet if there's a bullet there to draw
        if (bulletXCoordinate != 0)
        {
            SetCoordinate(bulletXCoordinate, bulletYCoordinate);
            cout << ".\n";
        }
}

const int GAMEBOARD_LEFT = 16;
const int GAMEBOARD_RIGHT = 94;
const int GAMEBOARD_TOP = 3;
const int SPACESHIP_TOP = 24;
const int SPACESHIP_BOTTOM = 28;

int Player1XCoordinate = 55, Player2XCoordinate = 55;
int Player1YCoordinate = 28;
int bulletXCoordinate = 0, bulletYCoordinate = 0;

我还对其余代码进行了一些调整。 if-else块中的每个案例都使用相同的基本绘图代码，因此我完全将其从if-else中删除。这也让我放弃了整个初始化if-else。

我还丢弃了宇宙飞船的一个垂直坐标。你真的不需要两个;只需跟踪上部坐标并在Player1YCoordinate + 1处绘制船的下半部分。

最后，我用常量替换了硬编码的板边缘。魔术数字通常不受欢迎;使用命名常量可以更容易地确定您在给定位置使用给定值的原因，以及将来更容易更新代码（可能需要针对不同的控制台大小进行更新）。

同时运行两个循环？使用循环移动和旅行

1 个答案: