Function screen_readkey

src/screen.cpp:40–47

ERR is actually -1, but this prevents us from needing to use curses.h in * sipp.cpp. */

/* ERR is actually -1, but this prevents us from needing to use curses.h in
 * sipp.cpp. */
int screen_readkey()
{
    int c = getch();
    if (c == ERR) {
        return -1;
    }
    return c;
}

void screen_exit()
{