xref: /dragonfly/games/battlestar/battlestar.c (revision 4318c66eac379e15105fe145d406dfef81b795f6)
1 /*        @(#)battlestar.c    8.2 (Berkeley) 4/28/95                            */
2 /*        $NetBSD: battlestar.c,v 1.16 2008/07/20 01:03:21 lukem 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 /*
34  * Battlestar - a stellar-tropical adventure game
35  *
36  * Originally written by His Lordship, Admiral David W. Horatio Riggle,
37  * on the Cory PDP-11/70, University of California, Berkeley.
38  */
39 
40 #include "extern.h"
41 
42 int
main(int argc,char ** argv)43 main(int argc, char **argv)
44 {
45           char    mainbuf[LINELENGTH];
46           char   *next;
47 
48           /* Open the score file then revoke setgid privileges */
49           open_score_file();
50           setgid(getgid());
51 
52           if (argc < 2)
53                     initialize(NULL);
54           else if (strcmp(argv[1], "-r") == 0)
55                     initialize((argc > 2) ? argv[2] : DEFAULT_SAVE_FILE);
56           else
57                     initialize(argv[1]);
58 start:
59           news();
60           if (beenthere[position] <= ROOMDESC)
61                     beenthere[position]++;
62           if (notes[LAUNCHED])
63                     crash();  /* decrements fuel & crash */
64           if (matchlight) {
65                     puts("Your match splutters out.");
66                     matchlight = 0;
67           }
68           if (!notes[CANTSEE] || testbit(inven, LAMPON) ||
69               testbit(location[position].objects, LAMPON)) {
70                     writedes();
71                     printobjs();
72           } else
73                     puts("It's too dark to see anything in here!");
74           whichway(location[position]);
75 run:
76           next = getcom(mainbuf, sizeof mainbuf, ">-: ",
77               "Please type in something.");
78           for (wordcount = 0; next && wordcount < NWORD - 1; wordcount++)
79                     next = getword(next, words[wordcount], -1);
80           parse();
81           switch (cypher()) {
82           case -1:
83                     goto run;
84           case 0:
85                     goto start;
86           default:
87                     errx(1, "bad return from cypher(): please submit a bug report");
88           }
89 }
90