Question

我正在用c ++创建游戏。我目前的目标是在永久循环中检查玩家的健康状况，以检查他是否已经死亡。虽然他是，我想要它cout＆lt;＆lt;你死了。但是因为cout＆lt;＆lt;是在while语句中，一直检查健康状况，结果输出并执行cout＆lt;＆lt; 多次。我想让它在一个循环中永远检查健康状况，如果健康状况是＆lt; 1，我想要它cout＆lt;＆lt; “你死了”;只有一次。有没有办法告诉while语句只执行一次？继承了我目前的声明：

bool gamerunning = true;

while (gamerunning == true) //While game is running...
{
if (health < 1) //If player is dead...
{
cout << "You are dead";
}
}

执行此代码会多次输出“你已经死了”。我希望它继续检查此循环中的运行状况，但我希望cout执行一次，因此它不会一遍又一遍地重复相同的消息。如果您能提供一个小例子来说明如何阻止这一点，我们将非常感激。非常感谢你们！

Answer 1

听起来你想要在玩家死亡时停止游戏运行，在这种情况下你想要这个：

while (gamerunning == true) //While game is running...
{
  if (health < 1) //If player is dead...
  {
    cout << "You are dead";
    gamerunning = false;
  }
}

如果没有，那么你可以保留另一个bool，说明死亡输出是否已经发生：

bool deadOutput = false;
while (gamerunning == true) //While game is running...
{
  if (health < 1 && !deadOutput) //If player is dead...
  {
    cout << "You are dead";
    deadOutput = true;
  }
}

Answer 2

为什么不这样？

bool gamerunning = true;

while (gamerunning == true) //While game is running...
{
   if (health < 1) break
}
cout << "You are dead";

如果你想保留你的循环，你可以添加额外的bool变量 - userDead，只在userDead为false时才进行检查，在写完输出后你可以将它设置为true。

Answer 3

这个怎么样？

bool gamerunning = true;
bool output_done = false;

while (gamerunning == true) //While game is running...
{
    if ((health < 1) && (output_done != true)) //If player is dead...
    {
        cout << "You are dead";
        output_done = true;
    }
}

Answer 4

您可以使用bool来跟踪它是否已经发生：

bool gamerunning = true;
bool printed = false;

while (gamerunning == true) //While game is running...
{
    if (health < 1) //If player is dead...
    {
        if (!printed) {
            cout << "You are dead";
            printed = true;
        }
    }
}

Answer 5

通常你会有一个状态机....但一个简单的方法就是跟踪..

bool gamerunning = true; bool alive = true;



while (gamerunning == true) //While game is running...
{
   if (health < 1 && alive) //If player is dead...
   {
      alive = false;
      cout << "You are dead";
   }
}

while (gamerunning == true) //While game is running... { if (health < 1 && alive) //If player is dead... { alive = false; cout << "You are dead"; } }

Answer 6

bool gamerunning = true;

while (gamerunning == true) //While game is running...
{
    if (health < 1) //If player is dead...
    {
         cout << "You are dead";
         break;
    }
}

或

bool gamerunning = true;

while (gamerunning == true) //While game is running...
{
    if (health < 1) //If player is dead...
    {
         cout << "You are dead";
         gamerunning = false;
    }
}

Answer 7

bool gamerunning = true;
bool playerDead = false

while (gamerunning == true) //While game is running...
{
    if (health < 1) //If player is dead...
    {
       if (!playerDead) 
       {
           cout << "You are dead";
           playerDead = true;
       }
    }
}

如何在c ++中执行一次无限循环执行一次

7 个答案: