1 /* $NetBSD: room.c,v 1.7 1999/02/10 01:36:50 hubertf 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 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)room.c 8.2 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: room.c,v 1.7 1999/02/10 01:36:50 hubertf Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include "extern.h" 46 47 void 48 writedes() 49 { 50 int compass; 51 const char *p; 52 int c; 53 54 printf("\n\t%s\n", location[position].name); 55 if (beenthere[position] < 3) { 56 compass = NORTH; 57 for (p = location[position].desc; (c = *p++) != 0;) 58 if (c != '-' && c != '*' && c != '+') 59 putchar(c); 60 else { 61 if (c != '*') 62 printf(truedirec(compass, c)); 63 compass++; 64 } 65 } 66 } 67 68 void 69 printobjs() 70 { 71 unsigned int *p = location[position].objects; 72 int n; 73 74 printf("\n"); 75 for (n = 0; n < NUMOFOBJECTS; n++) 76 if (testbit(p, n) && objdes[n]) 77 puts(objdes[n]); 78 } 79 80 void 81 whichway(here) 82 struct room here; 83 { 84 switch (direction) { 85 86 case NORTH: 87 left = here.west; 88 right = here.east; 89 ahead = here.north; 90 back = here.south; 91 break; 92 93 case SOUTH: 94 left = here.east; 95 right = here.west; 96 ahead = here.south; 97 back = here.north; 98 break; 99 100 case EAST: 101 left = here.north; 102 right = here.south; 103 ahead = here.east; 104 back = here.west; 105 break; 106 107 case WEST: 108 left = here.south; 109 right = here.north; 110 ahead = here.west; 111 back = here.east; 112 break; 113 114 } 115 } 116 117 const char * 118 truedirec(way, option) 119 int way; 120 char option; 121 { 122 switch (way) { 123 124 case NORTH: 125 switch (direction) { 126 case NORTH: 127 return ("ahead"); 128 case SOUTH: 129 return (option == '+' ? "behind you" : 130 "back"); 131 case EAST: 132 return ("left"); 133 case WEST: 134 return ("right"); 135 } 136 137 case SOUTH: 138 switch (direction) { 139 case NORTH: 140 return (option == '+' ? "behind you" : 141 "back"); 142 case SOUTH: 143 return ("ahead"); 144 case EAST: 145 return ("right"); 146 case WEST: 147 return ("left"); 148 } 149 150 case EAST: 151 switch (direction) { 152 case NORTH: 153 return ("right"); 154 case SOUTH: 155 return ("left"); 156 case EAST: 157 return ("ahead"); 158 case WEST: 159 return (option == '+' ? "behind you" : 160 "back"); 161 } 162 163 case WEST: 164 switch (direction) { 165 case NORTH: 166 return ("left"); 167 case SOUTH: 168 return ("right"); 169 case EAST: 170 return (option == '+' ? "behind you" : 171 "back"); 172 case WEST: 173 return ("ahead"); 174 } 175 176 default: 177 printf("Error: room %d. More than four directions wanted.", position); 178 return ("!!"); 179 } 180 } 181 182 void 183 newway(thisway) 184 int thisway; 185 { 186 switch (direction) { 187 188 case NORTH: 189 switch (thisway) { 190 case LEFT: 191 direction = WEST; 192 break; 193 case RIGHT: 194 direction = EAST; 195 break; 196 case BACK: 197 direction = SOUTH; 198 break; 199 } 200 break; 201 case SOUTH: 202 switch (thisway) { 203 case LEFT: 204 direction = EAST; 205 break; 206 case RIGHT: 207 direction = WEST; 208 break; 209 case BACK: 210 direction = NORTH; 211 break; 212 } 213 break; 214 case EAST: 215 switch (thisway) { 216 case LEFT: 217 direction = NORTH; 218 break; 219 case RIGHT: 220 direction = SOUTH; 221 break; 222 case BACK: 223 direction = WEST; 224 break; 225 } 226 break; 227 case WEST: 228 switch (thisway) { 229 case LEFT: 230 direction = SOUTH; 231 break; 232 case RIGHT: 233 direction = NORTH; 234 break; 235 case BACK: 236 direction = EAST; 237 break; 238 } 239 break; 240 } 241 } 242