xref: /dragonfly/games/battlestar/battlestar.c (revision 3170ffd7)
1 /*-
2  * Copyright (c) 1983, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#) Copyright (c) 1983, 1993 The Regents of the University of California.  All rights reserved.
30  * @(#)battlestar.c	8.1 (Berkeley) 5/31/93
31  * $FreeBSD: src/games/battlestar/battlestar.c,v 1.6.2.1 2001/03/05 11:45:35 kris Exp $
32  * $DragonFly: src/games/battlestar/battlestar.c,v 1.3 2006/08/08 16:47:20 pavalos Exp $
33  */
34 
35 /*
36  * Battlestar - a stellar-tropical adventure game
37  *
38  * Originally written by His Lordship, Admiral David W. Horatio Riggle,
39  * on the Cory PDP-11/70, University of California, Berkeley.
40  */
41 
42 #include "externs.h"
43 
44 int
45 main(int argc, char **argv)
46 {
47 	char mainbuf[LINELENGTH];
48 	char *next;
49 
50 	/* Open the score file then revoke setgid privileges */
51 	open_score_file();
52 	setgid(getgid());
53 
54 	initialize(argc < 2 || strcmp(argv[1], "-r"));
55 start:
56 	news();
57 	beenthere[position]++;
58 	if (notes[LAUNCHED])
59 		crash();	/* decrements fuel & crash */
60 	if (matchlight) {
61 		puts("Your match splutters out.");
62 		matchlight = 0;
63 	}
64 	if (!notes[CANTSEE] || testbit(inven, LAMPON) ||
65 	    testbit(location[position].objects, LAMPON)) {
66 		writedes();
67 		printobjs();
68 	} else
69 		puts("It's too dark to see anything in here!");
70 	whichway(location[position]);
71 run:
72 	next = getcom(mainbuf, sizeof mainbuf, ">-: ",
73 	    "Please type in something.");
74 	for (wordcount = 0; next && wordcount < 20; wordcount++)
75 		next = getword(next, words[wordcount], -1);
76 	parse();
77 	switch (cypher()) {
78 	case -1:
79 		goto run;
80 	case 0:
81 		goto start;
82 	default:
83 		exit(1); /* Shouldn't happen */
84 	}
85 	return (1);
86 }
87