xref: /dragonfly/games/hangman/main.c (revision e98bdfd3)
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 }
102