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  */
  37
  38 /* Re-coding of advent in C: privileged operations */
  39
  40 #include <sys/types.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <time.h>
  45 #include "hdr.h"
  46
  47 static int wizard(void);
  48
  49 void
  50 datime(int *d, int *t)
  51 {
  52         struct tm *tptr;
  53         time_t tvec;
  54
  55         time(&tvec);
  56         tptr = localtime(&tvec);
  57         /* day since 1977 */
  58         *d = (tptr->tm_yday + 365 * (tptr->tm_year - 77)
  59             + (tptr->tm_year - 77) / 4 - (tptr->tm_year - 1) / 100
  60             + (tptr->tm_year + 299) / 400);
  61         /* bug: this will overflow in the year 2066 AD (with 16 bit int) */
  62         /* it will be attributed to Wm the C's millenial celebration */
  63         /* and minutes since midnite */
  64         *t = tptr->tm_hour * 60 + tptr->tm_min;
  65 }
  66
  67 char magic[6];
  68
  69 void
  70 poof(void)
  71 {
  72         strcpy(magic, DECR(d, w, a, r, f));
  73         latncy = 45;
  74 }
  75
  76 int
  77 Start(void)
  78 {
  79         int d, t, delay;
  80
  81         datime(&d, &t);
  82         delay = (d - saved) * 1440 + (t - savet); /* good for about a month */
  83
  84         if (delay >= latncy) {
  85                 saved = -1;
  86                 return (FALSE);
  87         }
  88         printf("This adventure was suspended a mere %d minute%s ago.",
  89             delay, delay == 1 ? "" : "s");
  90         if (delay <= latncy / 3) {
  91                 mspeak(2);
  92                 exit(0);
  93         }
  94         mspeak(8);
  95         if (!wizard()) {
  96                 mspeak(9);
  97                 exit(0);
  98         }
  99         saved = -1;
 100         return (FALSE);
 101 }
 102
 103 /* not as complex as advent/10 (for now) */
 104 static int
 105 wizard(void)
 106 {
 107         char *word, *x;
 108
 109         if (!yesm(16, 0, 7))
 110                 return (FALSE);
 111         mspeak(17);
 112         getin(&word, &x);
 113         if (strncmp(word, magic, 5)) {
 114                 mspeak(20);
 115                 return (FALSE);
 116         }
 117         mspeak(19);
 118         return (TRUE);
 119 }
 120
 121 void
 122 ciao(void)
 123 {
 124         char *c;
 125         char fname[80];
 126
 127         printf("What would you like to call the saved version?\n");
 128         /* XXX - should use fgetln to avoid arbitrary limit */
 129         for (c = fname; c < fname + sizeof fname - 1; c++) {
 130                 int ch;
 131                 ch = getchar();
 132                 if (ch == '\n' || ch == EOF)
 133                         break;
 134                 *c = ch;
 135         }
 136         *c = 0;
 137         if (save(fname) != 0)                   /* Save failed */
 138                 return;
 139         printf("To resume, say \"adventure %s\".\n", fname);
 140         printf("\"With these rooms I might now have been familiarly acquainted.\"\n");
 141         exit(0);
 142 }
 143
 144 int
 145 ran(int range)
 146 {
 147         int i;
 148
 149         i = random() % range;
 150         return (i);
 151 }