games: Fix -Werror for gcc47.
[dragonfly.git] / games / trek / main.c
CommitLineData
6693db17 1/*-
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2 * Copyright (c) 1980, 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.
6693db17 13 * 3. Neither the name of the University nor the names of its contributors
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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.
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28 *
29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.1 (Berkeley) 5/31/93
31 * $FreeBSD: src/games/trek/main.c,v 1.7.2.1 2001/03/05 12:11:14 kris Exp $
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32 */
33
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34#include "trek.h"
35#include "getpar.h"
984263bc 36
ac79378f 37unsigned int Mother = 51 + (51 << 8);
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38
39/*
40** #### ##### # #### ##### #### ##### # #
41** # # # # # # # # # # # #
42** ### # ##### #### # #### ### ###
43** # # # # # # # # # # # #
44** #### # # # # # # # # ##### # #
45**
46** C version by Eric P. Allman 5/76 (U.C. Berkeley) with help
47** from Jeff Poskanzer and Pete Rubinstein.
48**
49** I also want to thank everyone here at Berkeley who
50** where crazy enough to play the undebugged game. I want to
51** particularly thank Nick Whyte, who made considerable
52** suggestions regarding the content of the game. Why, I'll
53** never forget the time he suggested the name for the
54** "capture" command.
55**
56** Please send comments, questions, and suggestions about this
57** game to:
58** Eric P. Allman
59** Project INGRES
60** Electronics Research Laboratory
61** Cory Hall
62** University of California
63** Berkeley, California 94720
64**
65** If you make ANY changes in the game, I sure would like to
66** know about them. It is sort of an ongoing project for me,
67** and I very much want to put in any bug fixes and improvements
68** that you might come up with.
69**
70** FORTRASH version by Kay R. Fisher (DEC) "and countless others".
71** That was adapted from the "original BASIC program" (ha!) by
72** Mike Mayfield (Centerline Engineering).
73**
74** Additional inspiration taken from FORTRAN version by
75** David Matuszek and Paul Reynolds which runs on the CDC
76** 7600 at Lawrence Berkeley Lab, maintained there by
77** Andy Davidson. This version is also available at LLL
78** and at LMSC. In all fairness, this version was the
79** major inspiration for this version of the game (trans-
80** lation: I ripped off a whole lot of code).
81**
82** Minor other input from the "Battelle Version 7A" by Joe Miller
83** (Graphics Systems Group, Battelle-Columbus Labs) and
84** Ross Pavlac (Systems Programmer, Battelle Memorial
85** Institute). That version was written in December '74
86** and extensively modified June '75. It was adapted
87** from the FTN version by Ron Williams of CDC Sunnyvale,
88** which was adapted from the Basic version distributed
89** by DEC. It also had "neat stuff swiped" from T. T.
90** Terry and Jim Korp (University of Texas), Hicks (Penn
91** U.), and Rick Maus (Georgia Tech). Unfortunately, it
92** was not as readable as it could have been and so the
93** translation effort was severely hampered. None the
94** less, I got the idea of inhabited starsystems from this
95** version.
96**
97** Permission is given for use, copying, and modification of
98** all or part of this program and related documentation,
99** provided that all reference to the authors are maintained.
100**
101**
102**********************************************************************
103**
104** NOTES TO THE MAINTAINER:
105**
106** There is a compilation option xTRACE which must be set for any
107** trace information to be generated. It is probably defined in
108** the version that you get. It can be removed, however, if you
109** have trouble finding room in core.
110**
111** Many things in trek are not as clear as they might be, but are
112** done to reduce space. I compile with the -f and -O flags. I
113** am constrained to running with non-separated I/D space, since
114** we don't have doubleing point hardware here; even if we did, I
115** would like trek to be available to the large number of people
116** who either have an 11/40 or do not have FP hardware. I also
117** found it desirable to make the code run reentrant, so this
118** added even more space constraints.
119**
120** I use the portable C library to do my I/O. This is done be-
121** cause I wanted the game easily transportable to other C
122** implementations, and because I was too lazy to do the doubleing
123** point input myself. Little did I know. The portable C library
124** released by Bell Labs has more bugs than you would believe, so
6693db17 125** I ended up rewriting the whole blessed thing. Trek exercises
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126** many of the bugs in it, as well as bugs in some of the section
127** III UNIX routines. We have fixed them here. One main problem
128** was a bug in alloc() that caused it to always ask for a large
129** hunk of memory, which worked fine unless you were almost out,
130** which I inevitably was. If you want the code for all of this
131** stuff, it is also available through me.
132**
133***********************************************************************
134*/
135
136jmp_buf env;
137
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138int
139main(int argc, char **argv)
984263bc 140{
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141#if 0
142 extern FILE *f_log;
984263bc 143 char opencode;
435f923e 144#endif
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145 int ac;
146 char **av;
984263bc 147
6693db17 148 /* Revoke setgid privileges */
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149 setgid(getgid());
150
151 av = argv;
152 ac = argc;
153 av++;
154 srandomdev();
435f923e 155#if 0
984263bc 156 opencode = 'w';
435f923e 157#endif
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158 while (ac > 1 && av[0][0] == '-') {
159 switch (av[0][1]) {
984263bc 160 case 'a': /* append to log file */
435f923e 161#if 0
984263bc 162 opencode = 'a';
435f923e 163#endif
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164 break;
165
6693db17 166#ifdef xTRACE
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167 case 't': /* trace */
168 if (getuid() != Mother)
169 goto badflag;
170 Trace++;
171 break;
6693db17 172#endif
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173 default:
174 badflag:
175 printf("Invalid option: %s\n", av[0]);
176
177 }
178 ac--;
179 av++;
180 }
181 if (ac > 2)
b58f1e66 182 syserr("arg count");
6693db17 183#if 0
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184 if (ac > 1)
185 f_log = fopen(av[0], opencode);
6693db17 186#endif
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187
188 printf("\n * * * S T A R T R E K * * *\n\nPress return to continue.\n");
189
6693db17 190 if (setjmp(env)) {
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191 if ( !getynpar("Another game") )
192 exit(0);
193 }
6693db17 194 do {
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195 setup();
196 play();
197 } while (getynpar("Another game"));
198
199 fflush(stdout);
6693db17 200 return (0);
984263bc 201}