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battlestar.c revision 1.9 
      1 /*	$NetBSD: battlestar.c,v 1.9 1999/09/18 16:40:04 jsm Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif				/* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)battlestar.c	8.2 (Berkeley) 4/28/95";
     45 #else
     46 __RCSID("$NetBSD: battlestar.c,v 1.9 1999/09/18 16:40:04 jsm Exp $");
     47 #endif
     48 #endif				/* not lint */
     49 
     50 /*
     51  * Battlestar - a stellar-tropical adventure game
     52  *
     53  * Originally written by His Lordship, Admiral David W. Horatio Riggle,
     54  * on the Cory PDP-11/70, University of California, Berkeley.
     55  */
     56 
     57 #include "extern.h"
     58 
     59 int main __P((int, char *[]));
     60 
     61 int
     62 main(argc, argv)
     63 	int     argc;
     64 	char  **argv;
     65 {
     66 	char    mainbuf[LINELENGTH];
     67 	char   *next;
     68 
     69 	/* Open the score file then revoke setgid privileges */
     70 	open_score_file();
     71 	setregid(getgid(), getgid());
     72 
     73 	initialize((argc < 2) ? NULL : (strcmp(argv[1], "-r") ? argv[1]
     74 					: (argv[2] ? argv[2]
     75 					   : DEFAULT_SAVE_FILE)));
     76 start:
     77 	news();
     78 	beenthere[position]++;
     79 	if (notes[LAUNCHED])
     80 		crash();	/* decrements fuel & crash */
     81 	if (matchlight) {
     82 		puts("Your match splutters out.");
     83 		matchlight = 0;
     84 	}
     85 	if (!notes[CANTSEE] || testbit(inven, LAMPON) ||
     86 	    testbit(location[position].objects, LAMPON)) {
     87 		writedes();
     88 		printobjs();
     89 	} else
     90 		puts("It's too dark to see anything in here!");
     91 	whichway(location[position]);
     92 run:
     93 	next = getcom(mainbuf, sizeof mainbuf, ">-: ",
     94 	    "Please type in something.");
     95 	for (wordcount = 0; next && wordcount < 20; wordcount++)
     96 		next = getword(next, words[wordcount], -1);
     97 	parse();
     98 	switch (cypher()) {
     99 	case -1:
    100 		goto run;
    101 	case 0:
    102 		goto start;
    103 	default:
    104 		errx(1, "bad return from cypher(): please submit a bug report");
    105 	}
    106 }
    107