1 /*- 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. 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) 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 $ 32 */ 33 34 #include "trek.h" 35 #include "getpar.h" 36 37 unsigned int Mother = 51 + (51 << 8); 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 125 ** I ended up rewriting the whole blessed thing. Trek exercises 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 */ 135 136 jmp_buf env; 137 138 int 139 main(int argc, char **argv) 140 { 141 int ac; 142 char **av; 143 144 /* Revoke setgid privileges */ 145 setgid(getgid()); 146 147 av = argv; 148 ac = argc; 149 av++; 150 srandomdev(); 151 while (ac > 1 && av[0][0] == '-') { 152 switch (av[0][1]) { 153 #ifdef xTRACE 154 case 't': /* trace */ 155 if (getuid() != Mother) 156 goto badflag; 157 Trace++; 158 break; 159 #endif 160 default: 161 badflag: 162 printf("Invalid option: %s\n", av[0]); 163 164 } 165 ac--; 166 av++; 167 } 168 if (ac > 1) 169 syserr("arg count"); 170 171 printf("\n * * * S T A R T R E K * * *\n\nPress return to continue.\n"); 172 173 if (setjmp(env)) { 174 if ( !getynpar("Another game") ) 175 exit(0); 176 } 177 do { 178 setup(); 179 play(); 180 } while (getynpar("Another game")); 181 182 fflush(stdout); 183 return (0); 184 } 185