games/hangman/main.c

   1 /*      $OpenBSD: main.c,v 1.12 2015/02/07 01:37:30 miod Exp $  */
   2 /*      $NetBSD: main.c,v 1.3 1995/03/23 08:32:50 cgd Exp $     */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "hangman.h"
  34 #include <paths.h>
  35
  36 void usage(void);
  37
  38 /*
  39  * This game written by Ken Arnold.
  40  */
  41 int
  42 main(int argc, char *argv[])
  43 {
  44         int ch;
  45
  46         /* Revoke setgid privileges */
  47         setgid(getgid());
  48
  49         while ((ch = getopt(argc, argv, "d:hk")) != -1) {
  50                 switch (ch) {
  51                 case 'd':
  52                         if (syms)
  53                                 usage();
  54                         else
  55                                 Dict_name = optarg;
  56                         break;
  57                 case 'k':
  58                         syms = 1;
  59                         Dict_name = getbootfile();
  60                         break;
  61                 case 'h':
  62                 case '?':
  63                 default:
  64                         usage();
  65                 }
  66         }
  67
  68         initscr();
  69         if (COLS < 50 || LINES < 14) {
  70                 endwin();
  71                 errx(1, "screen too small (must be at least 50x14)");
  72         }
  73         signal(SIGINT, die);
  74         setup();
  75         for (;;) {
  76                 Wordnum++;
  77                 playgame();
  78                 Average = (Average * (Wordnum - 1) + Errors) / Wordnum;
  79         }
  80         /* NOTREACHED */
  81 }
  82
  83 /*
  84  * die:
  85  *      Die properly.
  86  */
  87 void
  88 die(int sig __unused)
  89 {
  90         mvcur(0, COLS - 1, LINES - 1, 0);
  91         endwin();
  92         putchar('\n');
  93         exit(0);
  94 }
  95
  96 __dead2 void
  97 usage(void)
  98 {
  99         (void)fprintf(stderr, "usage: hangman [-k] [-d wordlist]\n");
 100         exit(1);
 101 }