games/adventure/wizard.c

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * The game adventure was originally written in Fortran by Will Crowther
   6  * and Don Woods.  It was later translated to C and enhanced by Jim
   7  * Gillogly.  This code is derived from software contributed to Berkeley
   8  * by Jim Gillogly at The Rand Corporation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * @(#)wizard.c 8.1 (Berkeley) 6/2/93
  35  * $FreeBSD: src/games/adventure/wizard.c,v 1.10.2.1 2001/03/05 11:43:11 kris Exp $
  36  * $DragonFly: src/games/adventure/wizard.c,v 1.3 2007/04/18 18:32:12 swildner Exp $
  37  */
  38
  39 /* Re-coding of advent in C: privileged operations */
  40
  41 #include <sys/types.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <time.h>
  46 #include <sys/cdefs.h>
  47 #include "hdr.h"
  48
  49 static int wizard(void);
  50
  51 void
  52 datime(int *d, int *t)
  53 {
  54         struct tm *tptr;
  55         time_t tvec;
  56
  57         time(&tvec);
  58         tptr = localtime(&tvec);
  59         /* day since 1977 */
  60         *d = (tptr->tm_yday + 365 * (tptr->tm_year - 77)
  61             + (tptr->tm_year - 77) / 4 - (tptr->tm_year - 1) / 100
  62             + (tptr->tm_year + 299) / 400);
  63         /* bug: this will overflow in the year 2066 AD (with 16 bit int) */
  64         /* it will be attributed to Wm the C's millenial celebration */
  65         /* and minutes since midnite */
  66         *t = tptr->tm_hour * 60 + tptr->tm_min;
  67 }
  68
  69 char magic[6];
  70
  71 void
  72 poof(void)
  73 {
  74         strcpy(magic, DECR(d, w, a, r, f));
  75         latncy = 45;
  76 }
  77
  78 int
  79 Start(void)
  80 {
  81         int d, t, delay;
  82
  83         datime(&d, &t);
  84         delay = (d - saved) * 1440 + (t - savet); /* good for about a month */
  85
  86         if (delay >= latncy) {
  87                 saved = -1;
  88                 return (FALSE);
  89         }
  90         printf("This adventure was suspended a mere %d minute%s ago.",
  91             delay, delay == 1 ? "" : "s");
  92         if (delay <= latncy / 3) {
  93                 mspeak(2);
  94                 exit(0);
  95         }
  96         mspeak(8);
  97         if (!wizard()) {
  98                 mspeak(9);
  99                 exit(0);
 100         }
 101         saved = -1;
 102         return (FALSE);
 103 }
 104
 105 /* not as complex as advent/10 (for now) */
 106 static int
 107 wizard(void)
 108 {
 109         char *word, *x;
 110
 111         if (!yesm(16, 0, 7))
 112                 return (FALSE);
 113         mspeak(17);
 114         getin(&word, &x);
 115         if (strncmp(word, magic, 5)) {
 116                 mspeak(20);
 117                 return (FALSE);
 118         }
 119         mspeak(19);
 120         return (TRUE);
 121 }
 122
 123 void
 124 ciao(void)
 125 {
 126         char *c;
 127         char fname[80];
 128
 129         printf("What would you like to call the saved version?\n");
 130         /* XXX - should use fgetln to avoid arbitrary limit */
 131         for (c = fname; c < fname + sizeof fname - 1; c++) {
 132                 int ch;
 133                 ch = getchar();
 134                 if (ch == '\n' || ch == EOF)
 135                         break;
 136                 *c = ch;
 137         }
 138         *c = 0;
 139         if (save(fname) != 0)                   /* Save failed */
 140                 return;
 141         printf("To resume, say \"adventure %s\".\n", fname);
 142         printf("\"With these rooms I might now have been familiarly acquainted.\"\n");
 143         exit(0);
 144 }
 145
 146 int
 147 ran(int range)
 148 {
 149         int i;
 150
 151         i = random() % range;
 152         return (i);
 153 }