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/*
czx81 - ZX81 CURSES emulator
Copyright (C) 2020 Ian Cowburn
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "wide_curses.h"
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <locale.h>
static long TimeDiff(const struct timespec *start,
const struct timespec *end)
{
long diff;
diff = (end->tv_nsec - start->tv_nsec) +
(end->tv_sec - start->tv_sec) * 1000000000L;
return diff;
}
int main(void)
{
struct timespec start;
int quit = FALSE;
setlocale(LC_ALL, "");
initscr();
raw();
noecho();
keypad(stdscr, TRUE);
nodelay(stdscr, TRUE);
clock_gettime(CLOCK_MONOTONIC, &start);
while(!quit)
{
struct timespec end;
struct timespec pause = {0};
int ch;
clear();
ch = getch();
if (ch == 3)
{
quit = TRUE;
}
refresh();
clock_gettime(CLOCK_MONOTONIC, &end);
start = end;
pause.tv_nsec = 20000000 - TimeDiff(&start, &end);
if (pause.tv_nsec > 0)
{
nanosleep(&pause, NULL);
}
}
endwin();
return EXIT_SUCCESS;
}
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