诅咒 C++ 的问题 [英] Problems with curses C++

问题描述

我最近开始在 Windows 上使用 PDcurses.我编写了一个简单的程序，它创建一个窗口并根据用户的输入移动一个字符，向上移动 'w'，向下移动 's' 等等.

I've recently started to use PDcurses for Windows. I wrote a simple program that creates a window and moves a character according to the user's inputs, going up for 'w', down for 's' and so on.

发生了两件奇怪的事情:

There are 2 weird things that happen:

1. 每当我按住s"向下移动角色时它消失了，不允许用户看到运动.
2. 每当我将角色横向移动时，它都会留下轨迹"；(有点)如果向右移动则为蓝色，如果向左移动则为红色.

我附上一个简短的 GIF，您可以在其中看到第一个问题和第二个问题的屏幕截图(因为录音质量不足以看到踪迹).

I Attach a short GIF in which you can see the first problem and a screenshot for the second (since the quality of the recording was not enough to see the trail).

这是 C++ 代码.它在循环开始时绘制，在中间扫描输入，并在结束时刷新屏幕.我将 getch() 设置为不使用 nodelay() 中断执行.

Here's the C++ code. It draws at the at the beginning of the loop, scans for inputs in the middle, and refreshes the screen at the end. I set the getch() not to interrupt the execution with nodelay().

initialize();
WINDOW* stage= createstage();
int ywindow,xwindow,heightwindow,widthwindow;

getbegyx(stage,ywindow,xwindow);
getmaxyx(stage,heightwindow,widthwindow);
heightwindow--;
widthwindow--;
int x = xwindow+1, y = ywindow+1;
char c = '@';


while(TRUE){

    box(stage,0,0);
    wmove(stage,y,x);
    wprintw(stage,"%c",'@');

    c=getch();
    if(c=='w' && y-1>ywindow){
        y--;
    }
    if (c=='s' && y+1<heightwindow){
        y++;
    }
    if(c=='d' && x+1<widthwindow){
        x++;
    }
    if(c=='a' && x-1>xwindow){
        x--;
    }
    wrefresh(stage);
    Sleep(16);
    wclear(stage);
}

推荐答案

更新:首先附上程序的完整源码:

Update: First of all I attach the complete source of the program:

#include "curses.h"
#include <windows.h>

void disableselection(){
  HANDLE hInput;
  DWORD prev_mode;
  hInput = GetStdHandle(STD_INPUT_HANDLE);
  GetConsoleMode(hInput, &prev_mode);
  SetConsoleMode(hInput, prev_mode & ENABLE_EXTENDED_FLAGS);
}

void disableresizing(){
  HWND consoleWindow = GetConsoleWindow();
  SetWindowLong(consoleWindow, GWL_STYLE, GetWindowLong(consoleWindow, GWL_STYLE) & ~WS_MAXIMIZEBOX & ~WS_SIZEBOX);
}

void initialize(){
  initscr();
  curs_set(0);
  disableselection();
  disableresizing();
  noecho();     
  nodelay(stdscr,TRUE);    
}

WINDOW* createstage(int starty=0, int startx=0, int height=LINES, int width=COLS-COLS*1/5){
  WINDOW* win=newwin(height-starty,width-startx,starty,startx);
  refresh();
  return win;
}

void end(WINDOW* stage){
  clear();
  refresh();
  nodelay(stdscr,FALSE);
  printw("press something to exit");
  getch();
  endwin();
}

int main(){
  initialize();
  WINDOW* stage= createstage();
  int ywindow,xwindow,heightwindow,widthwindow;
  getbegyx(stage,ywindow,xwindow);
  getmaxyx(stage,heightwindow,widthwindow);
  heightwindow--;
  widthwindow--;
  int x = xwindow+1, y = ywindow+1;
  char c = '@';
  while(TRUE){
    box(stage,0,0);
    wmove(stage,y,x);
    waddch(stage,'@');
    wrefresh(stage);
    c=wgetch(stage);
    if(c=='w' && y-1>ywindow){
      y--;
    }
    if (c=='s' && y+1<heightwindow){
      y++;
    }
    if(c=='d' && x+1<widthwindow){
      x++;
    }
    if(c=='a' && x-1>xwindow){
      x--;
    }
    napms(16);
    werase(stage);
    wrefresh(stage);
 }
 end(stage);
}

如您所见，我修改了循环.结果是现在没有踪迹"了.当角色向下移动时，它不会消失.不过，另一个问题出现了.

As you can see I modified the loop. The result is that now there are no "trails" and when the character moves down it doesn't disappear. Another issue has come up though.

每当我移动时，盒子(恰好是顶部)就会闪烁.即使我将 box(stage,0,0); 调用放在循环的开头，也会发生这种情况.

The box (precisely the top side) flickers whenever I move. This happens even If I put the box(stage,0,0); call at the start of the loop.

我尝试使用 stdscr 绘制框，并创建了一个子窗口用作主舞台并在父窗口中绘制框.我尝试的另一件事是删除认为它们冲突的 Windows API 函数.这些想法都没有奏效.

I've tried drawing the box using stdscr and also creating a subwindow to use as main stage and drawing the box in the parent window. Another thing I tried is removing the Windows API functions thinking they were conflicting. None of these ideas worked.

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