battlestar/room.c

   1 /*      $NetBSD: room.c,v 1.4 1997/01/07 11:56:49 tls Exp $     */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)room.c      8.2 (Berkeley) 4/28/95";
  39 #else
  40 static char rcsid[] = "$NetBSD: room.c,v 1.4 1997/01/07 11:56:49 tls Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "extern.h"
  45
  46 writedes()
  47 {
  48         int compass;
  49         register char *p;
  50         register c;
  51
  52         printf("\n\t%s\n", location[position].name);
  53         if (beenthere[position] < 3) {
  54                 compass = NORTH;
  55                 for (p = location[position].desc; c = *p++;)
  56                         if (c != '-' && c != '*' && c != '+')
  57                                 putchar(c);
  58                         else {
  59                                 if (c != '*')
  60                                         printf(truedirec(compass, c));
  61                                 compass++;
  62                         }
  63         }
  64 }
  65
  66 printobjs()
  67 {
  68         register unsigned int *p = location[position].objects;
  69         register n;
  70
  71         printf("\n");
  72         for (n = 0; n < NUMOFOBJECTS; n++)
  73                 if (testbit(p, n) && objdes[n])
  74                         puts(objdes[n]);
  75 }
  76
  77 whichway(here)
  78 struct room here;
  79 {
  80         switch(direction) {
  81
  82                 case NORTH:
  83                         left = here.west;
  84                         right = here.east;
  85                         ahead = here.north;
  86                         back = here.south;
  87                         break;
  88
  89                 case SOUTH:
  90                         left = here.east;
  91                         right = here.west;
  92                         ahead = here.south;
  93                         back = here.north;
  94                         break;
  95
  96                 case EAST:
  97                         left = here.north;
  98                         right = here.south;
  99                         ahead = here.east;
 100                         back = here.west;
 101                         break;
 102
 103                 case WEST:
 104                         left = here.south;
 105                         right = here.north;
 106                         ahead = here.west;
 107                         back = here.east;
 108                         break;
 109
 110         }
 111 }
 112
 113 char *
 114 truedirec(way, option)
 115 int way;
 116 char option;
 117 {
 118         switch(way) {
 119
 120                 case NORTH:
 121                         switch(direction) {
 122                                 case NORTH:
 123                                         return("ahead");
 124                                 case SOUTH:
 125                                         return(option == '+' ? "behind you" : "back");
 126                                 case EAST:
 127                                         return("left");
 128                                 case WEST:
 129                                         return("right");
 130                         }
 131
 132                 case SOUTH:
 133                         switch(direction) {
 134                                 case NORTH:
 135                                         return(option == '+' ? "behind you" : "back");
 136                                 case SOUTH:
 137                                         return("ahead");
 138                                 case EAST:
 139                                         return("right");
 140                                 case WEST:
 141                                         return("left");
 142                         }
 143
 144                 case EAST:
 145                         switch(direction) {
 146                                 case NORTH:
 147                                         return("right");
 148                                 case SOUTH:
 149                                         return("left");
 150                                 case EAST:
 151                                         return("ahead");
 152                                 case WEST:
 153                                         return(option == '+' ? "behind you" : "back");
 154                         }
 155
 156                 case WEST:
 157                         switch(direction) {
 158                                 case NORTH:
 159                                         return("left");
 160                                 case SOUTH:
 161                                         return("right");
 162                                 case EAST:
 163                                         return(option == '+' ? "behind you" : "back");
 164                                 case WEST:
 165                                         return("ahead");
 166                         }
 167
 168                 default:
 169                         printf("Error: room %d.  More than four directions wanted.", position);
 170                         return("!!");
 171       }
 172 }
 173
 174 newway(thisway)
 175 int thisway;
 176 {
 177         switch(direction){
 178
 179                 case NORTH:
 180                         switch(thisway){
 181                                 case LEFT:
 182                                         direction = WEST;
 183                                         break;
 184                                 case RIGHT:
 185                                         direction = EAST;
 186                                         break;
 187                                 case BACK:
 188                                         direction = SOUTH;
 189                                         break;
 190                         }
 191                         break;
 192                 case SOUTH:
 193                         switch(thisway){
 194                                 case LEFT:
 195                                         direction = EAST;
 196                                         break;
 197                                 case RIGHT:
 198                                         direction = WEST;
 199                                         break;
 200                                 case BACK:
 201                                         direction = NORTH;
 202                                         break;
 203                         }
 204                         break;
 205                 case EAST:
 206                         switch(thisway){
 207                                 case LEFT:
 208                                         direction = NORTH;
 209                                         break;
 210                                 case RIGHT:
 211                                         direction = SOUTH;
 212                                         break;
 213                                 case BACK:
 214                                         direction = WEST;
 215                                         break;
 216                         }
 217                         break;
 218                 case WEST:
 219                         switch(thisway){
 220                                 case LEFT:
 221                                         direction = SOUTH;
 222                                         break;
 223                                 case RIGHT:
 224                                         direction = NORTH;
 225                                         break;
 226                                 case BACK:
 227                                         direction = EAST;
 228                                         break;
 229                         }
 230                         break;
 231       }
 232 }