1 /* $NetBSD: room.c,v 1.13 2011/05/23 22:44:18 joerg 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 35 static char sccsid[] = "@(#)room.c 8.2 (Berkeley) 4/28/95"; 36 #else 37 __RCSID("$NetBSD: room.c,v 1.13 2011/05/23 22:44:18 joerg Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include "extern.h" 42 43 void 44 writedes(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 67 void 68 printobjs(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 79 void 80 whichway(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 } 114 115 const char * 116 truedirec(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 } 132 133 case SOUTH: 134 switch (direction) { 135 case NORTH: 136 return (option == '+' ? "behind you" : 137 "back"); 138 case SOUTH: 139 return ("ahead"); 140 case EAST: 141 return ("right"); 142 case WEST: 143 return ("left"); 144 } 145 146 case EAST: 147 switch (direction) { 148 case NORTH: 149 return ("right"); 150 case SOUTH: 151 return ("left"); 152 case EAST: 153 return ("ahead"); 154 case WEST: 155 return (option == '+' ? "behind you" : 156 "back"); 157 } 158 159 case WEST: 160 switch (direction) { 161 case NORTH: 162 return ("left"); 163 case SOUTH: 164 return ("right"); 165 case EAST: 166 return (option == '+' ? "behind you" : 167 "back"); 168 case WEST: 169 return ("ahead"); 170 } 171 172 default: 173 printf("Error: room %d. More than four directions wanted.", 174 position); 175 return ("!!"); 176 } 177 } 178 179 void 180 newway(int thisway) 181 { 182 switch (direction) { 183 184 case NORTH: 185 switch (thisway) { 186 case LEFT: 187 direction = WEST; 188 break; 189 case RIGHT: 190 direction = EAST; 191 break; 192 case BACK: 193 direction = SOUTH; 194 break; 195 } 196 break; 197 case SOUTH: 198 switch (thisway) { 199 case LEFT: 200 direction = EAST; 201 break; 202 case RIGHT: 203 direction = WEST; 204 break; 205 case BACK: 206 direction = NORTH; 207 break; 208 } 209 break; 210 case EAST: 211 switch (thisway) { 212 case LEFT: 213 direction = NORTH; 214 break; 215 case RIGHT: 216 direction = SOUTH; 217 break; 218 case BACK: 219 direction = WEST; 220 break; 221 } 222 break; 223 case WEST: 224 switch (thisway) { 225 case LEFT: 226 direction = SOUTH; 227 break; 228 case RIGHT: 229 direction = NORTH; 230 break; 231 case BACK: 232 direction = EAST; 233 break; 234 } 235 break; 236 } 237 } 238