1 /* $NetBSD: timer.c,v 1.5 2001/02/05 00:27:35 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Barry Brachman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)timer.c 8.2 (Berkeley) 2/22/94"; 43 #else 44 __RCSID("$NetBSD: timer.c,v 1.5 2001/02/05 00:27:35 christos Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/time.h> 50 51 #include <curses.h> 52 #include <setjmp.h> 53 #include <string.h> 54 #include <stdio.h> 55 #include <unistd.h> 56 57 #include "bog.h" 58 #include "extern.h" 59 60 static int waitch __P((long)); 61 62 extern int tlimit; 63 extern time_t start_t; 64 extern jmp_buf env; 65 66 /* 67 * Update the display of the remaining time while waiting for a character 68 * If time runs out do a longjmp() to the game controlling routine, returning 69 * non-zero; oth. return the character 70 * Leave the cursor where it was initially 71 */ 72 int 73 timerch() 74 { 75 time_t prevt, t; 76 int col, remaining, row; 77 78 getyx(stdscr, row, col); 79 prevt = 0L; 80 for (;;) { 81 if (waitch(1000L) == 1) 82 break; 83 time(&t); 84 if (t == prevt) 85 continue; 86 prevt = t; 87 remaining = tlimit - (int) (t - start_t); 88 if (remaining < 0) { 89 longjmp(env, 1); 90 /*NOTREACHED*/ 91 } 92 move(TIMER_LINE, TIMER_COL); 93 printw("%d:%02d", remaining / 60, remaining % 60); 94 move(row, col); 95 refresh(); 96 } 97 return (getch() & 0177); 98 } 99 100 /* 101 * Wait up to 'delay' microseconds for input to appear 102 * Returns 1 if input is ready, 0 oth. 103 */ 104 static int 105 waitch(delay) 106 long delay; 107 { 108 fd_set fdbits; 109 struct timeval duration; 110 111 duration.tv_sec = 0; 112 duration.tv_usec = delay; 113 FD_ZERO(&fdbits); 114 FD_SET(STDIN_FILENO, &fdbits); 115 return (select(32, &fdbits, NULL, NULL, &duration)); 116 } 117 118 void 119 delay(tenths) 120 int tenths; 121 { 122 struct timeval duration; 123 124 duration.tv_usec = (tenths % 10 ) * 100000L; 125 duration.tv_sec = (long) (tenths / 10); 126 select(32, 0, 0, 0, &duration); 127 } 128