1 /* @(#)main.c 8.1 (Berkeley) 5/31/93 */ 2 /* $NetBSD: main.c,v 1.23 2011/08/29 20:30:37 joerg Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 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 <stdio.h> 34 #include <setjmp.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include <err.h> 38 #include <time.h> 39 #include <sys/types.h> 40 #include "trek.h" 41 #include "getpar.h" 42 43 44 /* 45 ** #### ##### # #### ##### #### ##### # # 46 ** # # # # # # # # # # # # 47 ** ### # ##### #### # #### ### ### 48 ** # # # # # # # # # # # # 49 ** #### # # # # # # # # ##### # # 50 ** 51 ** C version by Eric P. Allman 5/76 (U.C. Berkeley) with help 52 ** from Jeff Poskanzer and Pete Rubinstein. 53 ** 54 ** I also want to thank everyone here at Berkeley who 55 ** where crazy enough to play the undebugged game. I want to 56 ** particularly thank Nick Whyte, who made considerable 57 ** suggestions regarding the content of the game. Why, I'll 58 ** never forget the time he suggested the name for the 59 ** "capture" command. 60 ** 61 ** Please send comments, questions, and suggestions about this 62 ** game to: 63 ** Eric P. Allman 64 ** Project INGRES 65 ** Electronics Research Laboratory 66 ** Cory Hall 67 ** University of California 68 ** Berkeley, California 94720 69 ** 70 ** If you make ANY changes in the game, I sure would like to 71 ** know about them. It is sort of an ongoing project for me, 72 ** and I very much want to put in any bug fixes and improvements 73 ** that you might come up with. 74 ** 75 ** FORTRASH version by Kay R. Fisher (DEC) "and countless others". 76 ** That was adapted from the "original BASIC program" (ha!) by 77 ** Mike Mayfield (Centerline Engineering). 78 ** 79 ** Additional inspiration taken from FORTRAN version by 80 ** David Matuszek and Paul Reynolds which runs on the CDC 81 ** 7600 at Lawrence Berkeley Lab, maintained there by 82 ** Andy Davidson. This version is also available at LLL 83 ** and at LMSC. In all fairness, this version was the 84 ** major inspiration for this version of the game (trans- 85 ** lation: I ripped off a whole lot of code). 86 ** 87 ** Minor other input from the "Battelle Version 7A" by Joe Miller 88 ** (Graphics Systems Group, Battelle-Columbus Labs) and 89 ** Ross Pavlac (Systems Programmer, Battelle Memorial 90 ** Institute). That version was written in December '74 91 ** and extensively modified June '75. It was adapted 92 ** from the FTN version by Ron Williams of CDC Sunnyvale, 93 ** which was adapted from the Basic version distributed 94 ** by DEC. It also had "neat stuff swiped" from T. T. 95 ** Terry and Jim Korp (University of Texas), Hicks (Penn 96 ** U.), and Rick Maus (Georgia Tech). Unfortunately, it 97 ** was not as readable as it could have been and so the 98 ** translation effort was severely hampered. None the 99 ** less, I got the idea of inhabited starsystems from this 100 ** version. 101 ** 102 ** Permission is given for use, copying, and modification of 103 ** all or part of this program and related documentation, 104 ** provided that all reference to the authors are maintained. 105 ** 106 ** 107 ********************************************************************** 108 ** 109 ** NOTES TO THE MAINTAINER: 110 ** 111 ** There is a compilation option xTRACE which must be set for any 112 ** trace information to be generated. It is probably defined in 113 ** the version that you get. It can be removed, however, if you 114 ** have trouble finding room in core. 115 ** 116 ** Many things in trek are not as clear as they might be, but are 117 ** done to reduce space. I compile with the -f and -O flags. I 118 ** am constrained to running with non-separated I/D space, since 119 ** we don't have doubleing point hardware here; even if we did, I 120 ** would like trek to be available to the large number of people 121 ** who either have an 11/40 or do not have FP hardware. I also 122 ** found it desirable to make the code run reentrant, so this 123 ** added even more space constraints. 124 ** 125 ** I use the portable C library to do my I/O. This is done be- 126 ** cause I wanted the game easily transportable to other C 127 ** implementations, and because I was too lazy to do the doubleing 128 ** point input myself. Little did I know. The portable C library 129 ** released by Bell Labs has more bugs than you would believe, so 130 ** I ended up rewriting the whole blessed thing. Trek excercises 131 ** many of the bugs in it, as well as bugs in some of the section 132 ** III UNIX routines. We have fixed them here. One main problem 133 ** was a bug in alloc() that caused it to always ask for a large 134 ** hunk of memory, which worked fine unless you were almost out, 135 ** which I inevitably was. If you want the code for all of this 136 ** stuff, it is also available through me. 137 ** 138 *********************************************************************** 139 */ 140 141 jmp_buf env; 142 143 __dead2 static void 144 usage(const char *av0) 145 { 146 errx(1, "Usage: %s [-fs]", av0); 147 } 148 149 int 150 main(int argc, char **argv) 151 { 152 int ch; 153 154 /* Revoke setgid privileges */ 155 setgid(getgid()); 156 157 /* Default to fast mode */ 158 Etc.fast = 1; 159 160 srandom((long) time(NULL)); 161 162 while ((ch = getopt(argc, argv, "fst")) != -1) { 163 switch (ch) { 164 case 'f': /* set fast mode */ 165 Etc.fast++; 166 break; 167 168 case 's': /* set slow mode */ 169 Etc.fast = 0; 170 break; 171 172 #ifdef xTRACE 173 case 't': /* trace */ 174 Trace++; 175 break; 176 #endif 177 178 default: 179 usage(argv[0]); 180 } 181 } 182 if (optind < argc) 183 usage(argv[0]); 184 185 printf("\n * * * S T A R T R E K * * *\n\n" 186 "Press return to continue.\n"); 187 188 if (setjmp(env)) { 189 if ( !getynpar("Another game") ) 190 exit(0); 191 } 192 193 do { 194 setup(); 195 play(); 196 } while (getynpar("Another game")); 197 198 fflush(stdout); 199 return 0; 200 } 201