InfoMagic Source Code 1993 July/THE_SOURCE_CODE_CD_ROM.iso/bsd_srcs/games/hack/hack.options.c

C/C++ Source or Header | 1990-05-02 | 4.5 KB | 204 lines

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.options.c - version 1.0.3 */

#include "config.h"
#include "hack.h"
extern char *eos();

initoptions()
{
    register char *opts;
    extern char *getenv();

    flags.time = flags.nonews = flags.notombstone = flags.end_own =
    flags.standout = flags.nonull = FALSE;
    flags.no_rest_on_space = TRUE;
    flags.invlet_constant = TRUE;
    flags.end_top = 5;
    flags.end_around = 4;
    flags.female = FALSE;            /* players are usually male */

    if(opts = getenv("HACKOPTIONS"))
        parseoptions(opts,TRUE);
}

parseoptions(opts, from_env)
register char *opts;
boolean from_env;
{
    register char *op,*op2;
    unsigned num;
    boolean negated;

    if(op = index(opts, ',')) {
        *op++ = 0;
        parseoptions(op, from_env);
    }
    if(op = index(opts, ' ')) {
        op2 = op;
        while(*op++)
            if(*op != ' ') *op2++ = *op;
    }
    if(!*opts) return;
    negated = FALSE;
    while((*opts == '!') || !strncmp(opts, "no", 2)) {
        if(*opts == '!') opts++; else opts += 2;
        negated = !negated;
    }

    if(!strncmp(opts,"standout",8)) {
        flags.standout = !negated;
        return;
    }

    if(!strncmp(opts,"null",3)) {
        flags.nonull = negated;
        return;
    }

    if(!strncmp(opts,"tombstone",4)) {
        flags.notombstone = negated;
        return;
    }

    if(!strncmp(opts,"news",4)) {
        flags.nonews = negated;
        return;
    }

    if(!strncmp(opts,"time",4)) {
        flags.time = !negated;
        flags.botl = 1;
        return;
    }

    if(!strncmp(opts,"restonspace",4)) {
        flags.no_rest_on_space = negated;
        return;
    }

    if(!strncmp(opts,"fixinv",4)) {
        if(from_env)
            flags.invlet_constant = !negated;
        else
            pline("The fixinvlet option must be in HACKOPTIONS.");
        return;
    }

    if(!strncmp(opts,"male",4)) {
        flags.female = negated;
        return;
    }
    if(!strncmp(opts,"female",6)) {
        flags.female = !negated;
        return;
    }

    /* name:string */
    if(!strncmp(opts,"name",4)) {
        extern char plname[PL_NSIZ];
        if(!from_env) {
          pline("The playername can be set only from HACKOPTIONS.");
          return;
        }
        op = index(opts,':');
        if(!op) goto bad;
        (void) strncpy(plname, op+1, sizeof(plname)-1);
        return;
    }

    /* endgame:5t[op] 5a[round] o[wn] */
    if(!strncmp(opts,"endgame",3)) {
        op = index(opts,':');
        if(!op) goto bad;
        op++;
        while(*op) {
            num = 1;
            if(digit(*op)) {
                num = atoi(op);
                while(digit(*op)) op++;
            } else
            if(*op == '!') {
                negated = !negated;
                op++;
            }
            switch(*op) {
            case 't':
                flags.end_top = num;
                break;
            case 'a':
                flags.end_around = num;
                break;
            case 'o':
                flags.end_own = !negated;
                break;
            default:
                goto bad;
            }
            while(letter(*++op)) ;
            if(*op == '/') op++;
        }
        return;
    }
bad:
    if(!from_env) {
        if(!strncmp(opts, "help", 4)) {
            pline("%s%s%s",
"To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
"give the command 'o' followed by the line `<options>' while playing. ",
"Here <options> is a list of <option>s separated by commas." );
            pline("%s%s%s",
"Simple (boolean) options are rest_on_space, news, time, ",
"null, tombstone, (fe)male. ",
"These can be negated by prefixing them with '!' or \"no\"." );
            pline("%s",
"A string option is name, as in HACKOPTIONS=\"name:Merlin-W\"." );
            pline("%s%s%s",
"A compound option is endgame; it is followed by a description of what ",
"parts of the scorelist you want to see. You might for example say: ",
"`endgame:own scores/5 top scores/4 around my score'." );
            return;
        }
        pline("Bad option: %s.", opts);
        pline("Type `o help<cr>' for help.");
        return;
    }
    puts("Bad syntax in HACKOPTIONS.");
    puts("Use for example:");
    puts(
"HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\""
    );
    getret();
}

doset()
{
    char buf[BUFSZ];

    pline("What options do you want to set? ");
    getlin(buf);
    if(!buf[0] || buf[0] == '\033') {
        (void) strcpy(buf,"HACKOPTIONS=");
        (void) strcat(buf, flags.female ? "female," : "male,");
        if(flags.standout) (void) strcat(buf,"standout,");
        if(flags.nonull) (void) strcat(buf,"nonull,");
        if(flags.nonews) (void) strcat(buf,"nonews,");
        if(flags.time) (void) strcat(buf,"time,");
        if(flags.notombstone) (void) strcat(buf,"notombstone,");
        if(flags.no_rest_on_space)
        (void) strcat(buf,"!rest_on_space,");
        if(flags.end_top != 5 || flags.end_around != 4 || flags.end_own){
        (void) sprintf(eos(buf), "endgame: %u topscores/%u around me",
            flags.end_top, flags.end_around);
        if(flags.end_own) (void) strcat(buf, "/own scores");
        } else {
        register char *eop = eos(buf);
        if(*--eop == ',') *eop = 0;
        }
        pline(buf);
    } else
        parseoptions(buf, FALSE);

    return(0);
}