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/* $NetBSD: timer.c,v 1.4 1997/10/10 12:04:36 lukem Exp $ */
/*-
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Barry Brachman.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)timer.c 8.2 (Berkeley) 2/22/94";
#else
__RCSID("$NetBSD: timer.c,v 1.4 1997/10/10 12:04:36 lukem Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <curses.h>
#include <setjmp.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "bog.h"
#include "extern.h"
static int waitch __P((long));
/*
* Update the display of the remaining time while waiting for a character
* If time runs out do a longjmp() to the game controlling routine, returning
* non-zero; oth. return the character
* Leave the cursor where it was initially
*/
int
timerch()
{
extern int tlimit;
extern time_t start_t;
extern jmp_buf env;
time_t prevt, t;
int col, remaining, row;
getyx(stdscr, row, col);
prevt = 0L;
for (;;) {
if (waitch(1000L) == 1)
break;
time(&t);
if (t == prevt)
continue;
prevt = t;
remaining = tlimit - (int) (t - start_t);
if (remaining < 0) {
longjmp(env, 1);
/*NOTREACHED*/
}
move(TIMER_LINE, TIMER_COL);
printw("%d:%02d", remaining / 60, remaining % 60);
move(row, col);
refresh();
}
return (getch() & 0177);
}
/*
* Wait up to 'delay' microseconds for input to appear
* Returns 1 if input is ready, 0 oth.
*/
static int
waitch(delay)
long delay;
{
fd_set fdbits;
struct timeval duration;
duration.tv_sec = 0;
duration.tv_usec = delay;
FD_ZERO(&fdbits);
FD_SET(STDIN_FILENO, &fdbits);
return (select(32, &fdbits, NULL, NULL, &duration));
}
void
delay(tenths)
int tenths;
{
struct timeval duration;
duration.tv_usec = (tenths % 10 ) * 100000L;
duration.tv_sec = (long) (tenths / 10);
select(32, 0, 0, 0, &duration);
}
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