trek/main.c

   1 /*
   2  * Copyright (c) 1980 Regents of the University of California.
   3  * 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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 char copyright[] =
  36 "@(#) Copyright (c) 1980 Regents of the University of California.\n\
  37  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 /*static char sccsid[] = "from: @(#)main.c      5.7 (Berkeley) 2/28/91";*/
  42 static char rcsid[] = "$Id: main.c,v 1.3 1994/05/24 23:54:17 jtc Exp $";
  43 #endif /* not lint */
  44
  45 # include       "trek.h"
  46 # include       <stdio.h>
  47 # include       <setjmp.h>
  48 # include       <termios.h>
  49
  50 # define        PRIO            00      /* default priority */
  51
  52 int     Mother  = 51 + (51 << 8);
  53
  54 /*
  55 **       ####  #####    #    ####          #####  ####   #####  #   #
  56 **      #        #     # #   #   #           #    #   #  #      #  #
  57 **       ###     #    #####  ####            #    ####   ###    ###
  58 **          #    #    #   #  #  #            #    #  #   #      #  #
  59 **      ####     #    #   #  #   #           #    #   #  #####  #   #
  60 **
  61 **      C version by Eric P. Allman 5/76 (U.C. Berkeley) with help
  62 **              from Jeff Poskanzer and Pete Rubinstein.
  63 **
  64 **      I also want to thank everyone here at Berkeley who
  65 **      where crazy enough to play the undebugged game.  I want to
  66 **      particularly thank Nick Whyte, who made considerable
  67 **      suggestions regarding the content of the game.  Why, I'll
  68 **      never forget the time he suggested the name for the
  69 **      "capture" command.
  70 **
  71 **      Please send comments, questions, and suggestions about this
  72 **              game to:
  73 **                      Eric P. Allman
  74 **                      Project INGRES
  75 **                      Electronics Research Laboratory
  76 **                      Cory Hall
  77 **                      University of California
  78 **                      Berkeley, California  94720
  79 **
  80 **      If you make ANY changes in the game, I sure would like to
  81 **      know about them.  It is sort of an ongoing project for me,
  82 **      and I very much want to put in any bug fixes and improvements
  83 **      that you might come up with.
  84 **
  85 **      FORTRASH version by Kay R. Fisher (DEC) "and countless others".
  86 **      That was adapted from the "original BASIC program" (ha!) by
  87 **              Mike Mayfield (Centerline Engineering).
  88 **
  89 **      Additional inspiration taken from FORTRAN version by
  90 **              David Matuszek and Paul Reynolds which runs on the CDC
  91 **              7600 at Lawrence Berkeley Lab, maintained there by
  92 **              Andy Davidson.  This version is also available at LLL
  93 **              and at LMSC.  In all fairness, this version was the
  94 **              major inspiration for this version of the game (trans-
  95 **              lation:  I ripped off a whole lot of code).
  96 **
  97 **      Minor other input from the "Battelle Version 7A" by Joe Miller
  98 **              (Graphics Systems Group, Battelle-Columbus Labs) and
  99 **              Ross Pavlac (Systems Programmer, Battelle Memorial
 100 **              Institute).  That version was written in December '74
 101 **              and extensively modified June '75.  It was adapted
 102 **              from the FTN version by Ron Williams of CDC Sunnyvale,
 103 **              which was adapted from the Basic version distributed
 104 **              by DEC.  It also had "neat stuff swiped" from T. T.
 105 **              Terry and Jim Korp (University of Texas), Hicks (Penn
 106 **              U.), and Rick Maus (Georgia Tech).  Unfortunately, it
 107 **              was not as readable as it could have been and so the
 108 **              translation effort was severely hampered.  None the
 109 **              less, I got the idea of inhabited starsystems from this
 110 **              version.
 111 **
 112 **      Permission is given for use, copying, and modification of
 113 **              all or part of this program and related documentation,
 114 **              provided that all reference to the authors are maintained.
 115 **
 116 **
 117 **********************************************************************
 118 **
 119 **  NOTES TO THE MAINTAINER:
 120 **
 121 **      There is a compilation option xTRACE which must be set for any
 122 **      trace information to be generated.  It is probably defined in
 123 **      the version that you get.  It can be removed, however, if you
 124 **      have trouble finding room in core.
 125 **
 126 **      Many things in trek are not as clear as they might be, but are
 127 **      done to reduce space.  I compile with the -f and -O flags.  I
 128 **      am constrained to running with non-seperated I/D space, since
 129 **      we don't have doubleing point hardware here; even if we did, I
 130 **      would like trek to be available to the large number of people
 131 **      who either have an 11/40 or do not have FP hardware.  I also
 132 **      found it desirable to make the code run reentrant, so this
 133 **      added even more space constraints.
 134 **
 135 **      I use the portable C library to do my I/O.  This is done be-
 136 **      cause I wanted the game easily transportable to other C
 137 **      implementations, and because I was too lazy to do the doubleing
 138 **      point input myself.  Little did I know.  The portable C library
 139 **      released by Bell Labs has more bugs than you would believe, so
 140 **      I ended up rewriting the whole blessed thing.  Trek excercises
 141 **      many of the bugs in it, as well as bugs in some of the section
 142 **      III UNIX routines.  We have fixed them here.  One main problem
 143 **      was a bug in alloc() that caused it to always ask for a large
 144 **      hunk of memory, which worked fine unless you were almost out,
 145 **      which I inevitably was.  If you want the code for all of this
 146 **      stuff, it is also available through me.
 147 **
 148 ***********************************************************************
 149 */
 150
 151 jmp_buf env;
 152
 153 main(argc, argv)
 154 int     argc;
 155 char    **argv;
 156 {
 157         long                    vect;
 158         /* extern FILE          *f_log; */
 159         register char           opencode;
 160         int                     prio;
 161         register int            ac;
 162         register char           **av;
 163         struct  termios         argp;
 164
 165         av = argv;
 166         ac = argc;
 167         av++;
 168         time(&vect);
 169         srand(vect);
 170         opencode = 'w';
 171         prio = PRIO;
 172
 173         if (tcgetattr(1, &argp) == 0)
 174         {
 175                 if (cfgetispeed(&argp) < B1200)
 176                         Etc.fast++;
 177         }
 178
 179         while (ac > 1 && av[0][0] == '-')
 180         {
 181                 switch (av[0][1])
 182                 {
 183                   case 'a':     /* append to log file */
 184                         opencode = 'a';
 185                         break;
 186
 187                   case 'f':     /* set fast mode */
 188                         Etc.fast++;
 189                         break;
 190
 191                   case 's':     /* set slow mode */
 192                         Etc.fast = 0;
 193                         break;
 194
 195 #               ifdef xTRACE
 196                   case 't':     /* trace */
 197                         if (getuid() != Mother)
 198                                 goto badflag;
 199                         Trace++;
 200                         break;
 201 #               endif
 202
 203                   case 'p':     /* set priority */
 204                         if (getuid() != Mother)
 205                                 goto badflag;
 206                         prio = atoi(av[0] + 2);
 207                         break;
 208
 209                   default:
 210                   badflag:
 211                         printf("Invalid option: %s\n", av[0]);
 212
 213                 }
 214                 ac--;
 215                 av++;
 216         }
 217         if (ac > 2)
 218                 syserr(0, "arg count");
 219                 /*
 220         if (ac > 1)
 221                 f_log = fopen(av[0], opencode);
 222                 */
 223
 224         printf("\n   * * *   S T A R   T R E K   * * *\n\nPress return to continue.\n");
 225
 226         if (setjmp(env))
 227         {
 228                 if ( !getynpar("Another game") )
 229                         exit(0);
 230         }
 231         do
 232         {
 233                 setup();
 234                 play();
 235         } while (getynpar("Another game"));
 236
 237         fflush(stdout);
 238 }