Question

我正在开发一个项目，用c ++制作球/对象命中游戏。我使用system("cls");清除屏幕并显示Game Over消息。用户分数正在重置为零0。删除system("cls");并不会影响用户的得分。有没有什么好方法可以在不清除vairables值的情况下清除屏幕？

这是一个示例代码。这是我游戏2级的功能。我已经评论了导致我这个问题的那条线。

    int level_2(string user_name,int scores)
{
    system("CLS");
    for(int i=5;i>0;i--)
    {
        cout<< "\n\n\n\n\n_________________________________\n";
        cout<< "|                               |\n";
        cout<< "| level 2 starts in "<<i<<" seconds\t|\n";
        cout<< "|                               |\n";
        cout<< "_________________________________\n";
        Sleep(1000);
        system("CLS");
    }   
    system("CLS");
string s = "=======";
string h = "       ";
int i=5, x=10, y=29;
cout << "Press Arrow Keys to move, press q to quit\tWelcome "<<user_name<<"!\n";
cout<< "_________________________________\n";
for(int i=0;i<31;i++)
cout<< "|                               |\n";
cout<< "_________________________________\n";
int x1 = rand() % 19 + 1, 
y1 = rand() % 19+ 1, 
x2 = rand() % 19 + 1, 
y2 = rand() % 19 + 1,
x3=2,
y3=2, 
incX=-1, 
incY=-1,
incXX=1, 
incYY=1,
speed=70;
while (true){

    gotoxy(x, y);
    cout << s;
    if (kbhit())
    {
        gotoxy(x, y);
        cout << h;
        i = getch();
        if (i == 'q')
        {
            break;
        }
        if (i == UP && y>UPLIMIT)
            y=y-2;
        else if (i == DOWN && y<LOWLIMIT)
            y=y+2;
        if (i == LEFT && x>LEFTLIMIT)
            x = x - 3;
        else if (i == RIGHT && x<RIGHTLIMIT-6)
            x = x + 3;
    }
    drawObject(x3, y3);
    print_scores(scores);
    hideObject(x3, y3);
    if(y1<LOWLIMIT)
    drawObject(x1, y1);
    if(y2<LOWLIMIT)
    drawObject(x2, y2);
    Sleep(speed);// to slow down the process
    hideObject(x1, y1);
    hideObject(x2, y2);
    if (x1 == RIGHTLIMIT)   incX = -1;
    if (x1 == LEFTLIMIT)    incX = 1;
    if (y1 == LOWLIMIT) 
    {
        incY = 0;
        speed=40;
    }
    if (x1>x-2 && x1<x+7 ) 
    {   if(y1==y-1)
        {
            incY=-1;
            scores=scores+10;
            total_scores=total_scores+10;
        }
    }
    if (y1 == UPLIMIT)  incY = 1;
    x1 += incX;
    y1 += incY;

    if (x2 == RIGHTLIMIT)   incXX = -1;
    if (x2 == LEFTLIMIT)    incXX = 1;
    if (y2 == LOWLIMIT )
    {
        incYY = 0;
        speed=40;
    }
    if (x2>x-2 && x2<x+7 ) 
    {   if(y2==y-1){
        incYY=-1;
        scores=scores+10;
        total_scores=total_scores+10;
        }
    }
    if (y2 == UPLIMIT)  incYY = 1;
    x2 += incXX;
    y2 += incYY;

    speed=speed-1;
    if (speed<25)
    speed=25;
if(incY==0 && incYY==0)
{
    system("cls");
    cout<<"\n\n\n\tG";Sleep(50);cout<<"a";Sleep(50);cout<<"m";Sleep(50);cout<<"e";Sleep(50);cout<<" ";Sleep(50);cout<<"O";Sleep(50);cout<<"v";Sleep(50);cout<<"e";Sleep(50);cout<<"r";
    system("pause>nul");
    system("cls");     //this line is clearing my scores
    break;
}
if(incY==0 && incYY==0)
break;
if(scores>=score2)
{
    ofstream out("records.txt");
    out<<scores;
    out.close();
    ofstream out1("total_scores.txt");
    out1<<total_scores;
    out1.close();
    break;
    }
    }
}

Answer 1

system("cls")不要清除变量的值。如果您遇到问题，请在清除屏幕之前将变量保存到文件中，然后在system("cls")行之后加载。

系统（＆＃34; CLS＆＃34;）是否也在c ++中清除了我的变量存储

1 个答案: