120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/* $NetBSD: timer.c,v 1.10 2005/07/01 16:38:24 jmc Exp $ */
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Barry Brachman.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)timer.c 8.2 (Berkeley) 2/22/94";
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#else
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__RCSID("$NetBSD: timer.c,v 1.10 2005/07/01 16:38:24 jmc Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/poll.h>
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#include <curses.h>
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#include <setjmp.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "bog.h"
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#include "extern.h"
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static int waitch(int);
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extern int tlimit;
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extern time_t start_t;
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extern jmp_buf env;
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/*
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* Update the display of the remaining time while waiting for a character
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* If time runs out do a longjmp() to the game controlling routine, returning
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* non-zero; oth. return the character
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* Leave the cursor where it was initially
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*/
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int
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timerch(void)
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{
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time_t prevt, t;
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int col, remaining, row;
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getyx(stdscr, row, col);
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prevt = 0L;
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for (;;) {
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if (waitch(1) == 1)
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break;
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time(&t);
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if (t == prevt)
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continue;
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prevt = t;
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remaining = tlimit - (int) (t - start_t);
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if (remaining < 0) {
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longjmp(env, 1);
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/*NOTREACHED*/
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}
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move(TIMER_LINE, TIMER_COL);
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printw("%d:%02d", remaining / 60, remaining % 60);
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move(row, col);
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refresh();
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}
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return (getch() & 0177);
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}
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/*
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* Wait up to 'delay' microseconds for input to appear
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* Returns 1 if input is ready, 0 oth.
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*/
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static int
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waitch(int tdelay)
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{
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struct pollfd set[1];
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set[0].fd = STDIN_FILENO;
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set[0].events = POLLIN;
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return (poll(set, 1, tdelay));
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}
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void
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delay(int tenths)
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{
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struct timespec duration;
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duration.tv_nsec = (tenths % 10 ) * 100000000L;
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duration.tv_sec = (long) (tenths / 10);
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nanosleep(&duration, NULL);
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}
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