1/* $NetBSD: room.c,v 1.15 2021/05/02 12:50:43 rillig 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34#if 0 35static char sccsid[] = "@(#)room.c 8.2 (Berkeley) 4/28/95"; 36#else 37__RCSID("$NetBSD: room.c,v 1.15 2021/05/02 12:50:43 rillig Exp $"); 38#endif 39#endif /* not lint */ 40 41#include "extern.h" 42 43void 44writedes(void) 45{ 46 int compass; 47 const char *p; 48 int c; 49 50 printf("\n\t%s\n", location[position].name); 51 if (beenthere[position] < ROOMDESC || verbose) { 52 compass = NORTH; 53 for (p = location[position].desc; (c = *p++) != 0;) 54 if (c != '-' && c != '*' && c != '+') { 55 if (c == '=') 56 putchar('-'); 57 else 58 putchar(c); 59 } else { 60 if (c != '*') 61 printf("%s", truedirec(compass, c)); 62 compass++; 63 } 64 } 65} 66 67void 68printobjs(void) 69{ 70 unsigned int *p = location[position].objects; 71 int n; 72 73 printf("\n"); 74 for (n = 0; n < NUMOFOBJECTS; n++) 75 if (testbit(p, n) && objdes[n]) 76 puts(objdes[n]); 77} 78 79void 80whichway(struct room here) 81{ 82 switch (direction) { 83 84 case NORTH: 85 left = here.west; 86 right = here.east; 87 ahead = here.north; 88 back = here.south; 89 break; 90 91 case SOUTH: 92 left = here.east; 93 right = here.west; 94 ahead = here.south; 95 back = here.north; 96 break; 97 98 case EAST: 99 left = here.north; 100 right = here.south; 101 ahead = here.east; 102 back = here.west; 103 break; 104 105 case WEST: 106 left = here.south; 107 right = here.north; 108 ahead = here.west; 109 back = here.east; 110 break; 111 112 } 113} 114 115const char * 116truedirec(int way, int 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" : 126 "back"); 127 case EAST: 128 return ("left"); 129 case WEST: 130 return ("right"); 131 } 132 break; 133 134 case SOUTH: 135 switch (direction) { 136 case NORTH: 137 return (option == '+' ? "behind you" : 138 "back"); 139 case SOUTH: 140 return ("ahead"); 141 case EAST: 142 return ("right"); 143 case WEST: 144 return ("left"); 145 } 146 break; 147 148 case EAST: 149 switch (direction) { 150 case NORTH: 151 return ("right"); 152 case SOUTH: 153 return ("left"); 154 case EAST: 155 return ("ahead"); 156 case WEST: 157 return (option == '+' ? "behind you" : 158 "back"); 159 } 160 break; 161 162 case WEST: 163 switch (direction) { 164 case NORTH: 165 return ("left"); 166 case SOUTH: 167 return ("right"); 168 case EAST: 169 return (option == '+' ? "behind you" : 170 "back"); 171 case WEST: 172 return ("ahead"); 173 } 174 break; 175 } 176 177 printf("Error: room %d. More than four directions wanted.", 178 position); 179 return ("!!"); 180} 181 182void 183newway(int thisway) 184{ 185 switch (direction) { 186 187 case NORTH: 188 switch (thisway) { 189 case LEFT: 190 direction = WEST; 191 break; 192 case RIGHT: 193 direction = EAST; 194 break; 195 case BACK: 196 direction = SOUTH; 197 break; 198 } 199 break; 200 case SOUTH: 201 switch (thisway) { 202 case LEFT: 203 direction = EAST; 204 break; 205 case RIGHT: 206 direction = WEST; 207 break; 208 case BACK: 209 direction = NORTH; 210 break; 211 } 212 break; 213 case EAST: 214 switch (thisway) { 215 case LEFT: 216 direction = NORTH; 217 break; 218 case RIGHT: 219 direction = SOUTH; 220 break; 221 case BACK: 222 direction = WEST; 223 break; 224 } 225 break; 226 case WEST: 227 switch (thisway) { 228 case LEFT: 229 direction = SOUTH; 230 break; 231 case RIGHT: 232 direction = NORTH; 233 break; 234 case BACK: 235 direction = EAST; 236 break; 237 } 238 break; 239 } 240} 241