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Annotation of 43BSD/games/trek/main.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: char copyright[] =
        !             9: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
        !            10:  All rights reserved.\n";
        !            11: #endif not lint
        !            12: 
        !            13: #ifndef lint
        !            14: static char sccsid[] = "@(#)main.c     5.1 (Berkeley) 1/29/86";
        !            15: #endif not lint
        !            16: 
        !            17: # include      "trek.h"
        !            18: # include      <stdio.h>
        !            19: # include      <sgtty.h>
        !            20: # define       PRIO            00      /* default priority */
        !            21: 
        !            22: int    Mother  = 51 + (51 << 8);
        !            23: 
        !            24: /*
        !            25: **      ####  #####    #    ####          #####  ####   #####  #   #
        !            26: **     #        #     # #   #   #           #    #   #  #      #  #
        !            27: **      ###     #    #####  ####            #    ####   ###    ###
        !            28: **         #    #    #   #  #  #            #    #  #   #      #  #
        !            29: **     ####     #    #   #  #   #           #    #   #  #####  #   #
        !            30: **
        !            31: **     C version by Eric P. Allman 5/76 (U.C. Berkeley) with help
        !            32: **             from Jeff Poskanzer and Pete Rubinstein.
        !            33: **
        !            34: **     I also want to thank everyone here at Berkeley who
        !            35: **     where crazy enough to play the undebugged game.  I want to
        !            36: **     particularly thank Nick Whyte, who made considerable
        !            37: **     suggestions regarding the content of the game.  Why, I'll
        !            38: **     never forget the time he suggested the name for the
        !            39: **     "capture" command.
        !            40: **
        !            41: **     Please send comments, questions, and suggestions about this
        !            42: **             game to:
        !            43: **                     Eric P. Allman
        !            44: **                     Project INGRES
        !            45: **                     Electronics Research Laboratory
        !            46: **                     Cory Hall
        !            47: **                     University of California
        !            48: **                     Berkeley, California  94720
        !            49: **
        !            50: **     If you make ANY changes in the game, I sure would like to
        !            51: **     know about them.  It is sort of an ongoing project for me,
        !            52: **     and I very much want to put in any bug fixes and improvements
        !            53: **     that you might come up with.
        !            54: **
        !            55: **     FORTRASH version by Kay R. Fisher (DEC) "and countless others".
        !            56: **     That was adapted from the "original BASIC program" (ha!) by
        !            57: **             Mike Mayfield (Centerline Engineering).
        !            58: **
        !            59: **     Additional inspiration taken from FORTRAN version by
        !            60: **             David Matuszek and Paul Reynolds which runs on the CDC
        !            61: **             7600 at Lawrence Berkeley Lab, maintained there by
        !            62: **             Andy Davidson.  This version is also available at LLL
        !            63: **             and at LMSC.  In all fairness, this version was the
        !            64: **             major inspiration for this version of the game (trans-
        !            65: **             lation:  I ripped off a whole lot of code).
        !            66: **
        !            67: **     Minor other input from the "Battelle Version 7A" by Joe Miller
        !            68: **             (Graphics Systems Group, Battelle-Columbus Labs) and
        !            69: **             Ross Pavlac (Systems Programmer, Battelle Memorial
        !            70: **             Institute).  That version was written in December '74
        !            71: **             and extensively modified June '75.  It was adapted
        !            72: **             from the FTN version by Ron Williams of CDC Sunnyvale,
        !            73: **             which was adapted from the Basic version distributed
        !            74: **             by DEC.  It also had "neat stuff swiped" from T. T.
        !            75: **             Terry and Jim Korp (University of Texas), Hicks (Penn
        !            76: **             U.), and Rick Maus (Georgia Tech).  Unfortunately, it
        !            77: **             was not as readable as it could have been and so the
        !            78: **             translation effort was severely hampered.  None the
        !            79: **             less, I got the idea of inhabited starsystems from this
        !            80: **             version.
        !            81: **
        !            82: **     Permission is given for use, copying, and modification of
        !            83: **             all or part of this program and related documentation,
        !            84: **             provided that all reference to the authors are maintained.
        !            85: **
        !            86: **
        !            87: **********************************************************************
        !            88: **
        !            89: **  NOTES TO THE MAINTAINER:
        !            90: **
        !            91: **     There is a compilation option xTRACE which must be set for any
        !            92: **     trace information to be generated.  It is probably defined in
        !            93: **     the version that you get.  It can be removed, however, if you
        !            94: **     have trouble finding room in core.
        !            95: **
        !            96: **     Many things in trek are not as clear as they might be, but are
        !            97: **     done to reduce space.  I compile with the -f and -O flags.  I
        !            98: **     am constrained to running with non-seperated I/D space, since
        !            99: **     we don't have doubleing point hardware here; even if we did, I
        !           100: **     would like trek to be available to the large number of people
        !           101: **     who either have an 11/40 or do not have FP hardware.  I also
        !           102: **     found it desirable to make the code run reentrant, so this
        !           103: **     added even more space constraints.
        !           104: **
        !           105: **     I use the portable C library to do my I/O.  This is done be-
        !           106: **     cause I wanted the game easily transportable to other C
        !           107: **     implementations, and because I was too lazy to do the doubleing
        !           108: **     point input myself.  Little did I know.  The portable C library
        !           109: **     released by Bell Labs has more bugs than you would believe, so
        !           110: **     I ended up rewriting the whole blessed thing.  Trek excercises
        !           111: **     many of the bugs in it, as well as bugs in some of the section
        !           112: **     III UNIX routines.  We have fixed them here.  One main problem
        !           113: **     was a bug in alloc() that caused it to always ask for a large
        !           114: **     hunk of memory, which worked fine unless you were almost out,
        !           115: **     which I inevitably was.  If you want the code for all of this
        !           116: **     stuff, it is also available through me.
        !           117: **
        !           118: ***********************************************************************
        !           119: */
        !           120: 
        !           121: main(argc, argv)
        !           122: int    argc;
        !           123: char   **argv;
        !           124: {
        !           125:        long                    vect;
        !           126:        /* extern FILE          *f_log; */
        !           127:        register char           opencode;
        !           128:        int                     prio;
        !           129:        register int            ac;
        !           130:        register char           **av;
        !           131:        struct  sgttyb          argp;
        !           132:        int                     been_here = 0;
        !           133: 
        !           134:        av = argv;
        !           135:        ac = argc;
        !           136:        av++;
        !           137:        time(&vect);
        !           138:        srand(vect);
        !           139:        opencode = 'w';
        !           140:        prio = PRIO;
        !           141:        if (gtty(1, &argp) == 0)
        !           142:        {
        !           143:                if ((argp.sg_ispeed ) < B1200)
        !           144:                        Etc.fast++;
        !           145:        }
        !           146:        while (ac > 1 && av[0][0] == '-')
        !           147:        {
        !           148:                switch (av[0][1])
        !           149:                {
        !           150:                  case 'a':     /* append to log file */
        !           151:                        opencode = 'a';
        !           152:                        break;
        !           153: 
        !           154:                  case 'f':     /* set fast mode */
        !           155:                        Etc.fast++;
        !           156:                        break;
        !           157: 
        !           158:                  case 's':     /* set slow mode */
        !           159:                        Etc.fast = 0;
        !           160:                        break;
        !           161: 
        !           162: #              ifdef xTRACE
        !           163:                  case 't':     /* trace */
        !           164:                        if (getuid() != Mother)
        !           165:                                goto badflag;
        !           166:                        Trace++;
        !           167:                        break;
        !           168: #              endif
        !           169: 
        !           170:                  case 'p':     /* set priority */
        !           171:                        if (getuid() != Mother)
        !           172:                                goto badflag;
        !           173:                        if (scanf(-1, &av[0][2], "%d", &prio) > 0)
        !           174:                                break;
        !           175: 
        !           176:                  default:
        !           177:                  badflag:
        !           178:                        printf("Invalid option: %s\n", av[0]);
        !           179: 
        !           180:                }
        !           181:                ac--;
        !           182:                av++;
        !           183:        }
        !           184:        if (ac > 2)
        !           185:                syserr(0, "arg count");
        !           186:                /*
        !           187:        if (ac > 1)
        !           188:                f_log = fopen(av[0], opencode);
        !           189:                */
        !           190: 
        !           191:        printf("\n   * * *   S T A R   T R E K   * * *\n\n");
        !           192: 
        !           193:        play_with(stdin);
        !           194:        ungetc('\n',stdin);
        !           195:        setexit();
        !           196:        if ( been_here == 1 )
        !           197:        {
        !           198:                if ( !getynpar("Another game") )
        !           199:                        exit(0);
        !           200:        }
        !           201:        been_here = 1;
        !           202:        do
        !           203:        {
        !           204:                setup();
        !           205:                play();
        !           206:        } while (getynpar("Another game"));
        !           207: 
        !           208:        fflush(stdout);
        !           209: }
        !           210: 
        !           211: play_with(iop)
        !           212: register       FILE    *iop;
        !           213: {
        !           214:        extern  char    _sibuf[];
        !           215: 
        !           216:        iop->_cnt = 0;
        !           217:        iop->_base = _sibuf;
        !           218:        iop->_ptr = iop->_base;
        !           219:        iop->_bufsiz = BUFSIZ;
        !           220: }

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