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2a1cfdf5 WJ |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)room.c 5.3 (Berkeley) 6/1/90"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include "externs.h" | |
39 | ||
40 | writedes() | |
41 | { | |
42 | int compass; | |
43 | register char *p; | |
44 | register c; | |
45 | ||
46 | printf("\n\t%s\n", location[position].name); | |
47 | if (beenthere[position] < 3) { | |
48 | compass = NORTH; | |
49 | for (p = location[position].desc; c = *p++;) | |
50 | if (c != '-' && c != '*' && c != '+') | |
51 | putchar(c); | |
52 | else { | |
53 | if (c != '*') | |
54 | printf(truedirec(compass, c)); | |
55 | compass++; | |
56 | } | |
57 | } | |
58 | } | |
59 | ||
60 | printobjs() | |
61 | { | |
62 | register unsigned int *p = location[position].objects; | |
63 | register n; | |
64 | ||
65 | printf("\n"); | |
66 | for (n = 0; n < NUMOFOBJECTS; n++) | |
67 | if (testbit(p, n) && objdes[n]) | |
68 | puts(objdes[n]); | |
69 | } | |
70 | ||
71 | whichway(here) | |
72 | struct room here; | |
73 | { | |
74 | switch(direction) { | |
75 | ||
76 | case NORTH: | |
77 | left = here.west; | |
78 | right = here.east; | |
79 | ahead = here.north; | |
80 | back = here.south; | |
81 | break; | |
82 | ||
83 | case SOUTH: | |
84 | left = here.east; | |
85 | right = here.west; | |
86 | ahead = here.south; | |
87 | back = here.north; | |
88 | break; | |
89 | ||
90 | case EAST: | |
91 | left = here.north; | |
92 | right = here.south; | |
93 | ahead = here.east; | |
94 | back = here.west; | |
95 | break; | |
96 | ||
97 | case WEST: | |
98 | left = here.south; | |
99 | right = here.north; | |
100 | ahead = here.west; | |
101 | back = here.east; | |
102 | break; | |
103 | ||
104 | } | |
105 | } | |
106 | ||
107 | char * | |
108 | truedirec(way, option) | |
109 | int way; | |
110 | char option; | |
111 | { | |
112 | switch(way) { | |
113 | ||
114 | case NORTH: | |
115 | switch(direction) { | |
116 | case NORTH: | |
117 | return("ahead"); | |
118 | case SOUTH: | |
119 | return(option == '+' ? "behind you" : "back"); | |
120 | case EAST: | |
121 | return("left"); | |
122 | case WEST: | |
123 | return("right"); | |
124 | } | |
125 | ||
126 | case SOUTH: | |
127 | switch(direction) { | |
128 | case NORTH: | |
129 | return(option == '+' ? "behind you" : "back"); | |
130 | case SOUTH: | |
131 | return("ahead"); | |
132 | case EAST: | |
133 | return("right"); | |
134 | case WEST: | |
135 | return("left"); | |
136 | } | |
137 | ||
138 | case EAST: | |
139 | switch(direction) { | |
140 | case NORTH: | |
141 | return("right"); | |
142 | case SOUTH: | |
143 | return("left"); | |
144 | case EAST: | |
145 | return("ahead"); | |
146 | case WEST: | |
147 | return(option == '+' ? "behind you" : "back"); | |
148 | } | |
149 | ||
150 | case WEST: | |
151 | switch(direction) { | |
152 | case NORTH: | |
153 | return("left"); | |
154 | case SOUTH: | |
155 | return("right"); | |
156 | case EAST: | |
157 | return(option == '+' ? "behind you" : "back"); | |
158 | case WEST: | |
159 | return("ahead"); | |
160 | } | |
161 | ||
162 | default: | |
163 | printf("Error: room %d. More than four directions wanted.", position); | |
164 | return("!!"); | |
165 | } | |
166 | } | |
167 | ||
168 | newway(thisway) | |
169 | int thisway; | |
170 | { | |
171 | switch(direction){ | |
172 | ||
173 | case NORTH: | |
174 | switch(thisway){ | |
175 | case LEFT: | |
176 | direction = WEST; | |
177 | break; | |
178 | case RIGHT: | |
179 | direction = EAST; | |
180 | break; | |
181 | case BACK: | |
182 | direction = SOUTH; | |
183 | break; | |
184 | } | |
185 | break; | |
186 | case SOUTH: | |
187 | switch(thisway){ | |
188 | case LEFT: | |
189 | direction = EAST; | |
190 | break; | |
191 | case RIGHT: | |
192 | direction = WEST; | |
193 | break; | |
194 | case BACK: | |
195 | direction = NORTH; | |
196 | break; | |
197 | } | |
198 | break; | |
199 | case EAST: | |
200 | switch(thisway){ | |
201 | case LEFT: | |
202 | direction = NORTH; | |
203 | break; | |
204 | case RIGHT: | |
205 | direction = SOUTH; | |
206 | break; | |
207 | case BACK: | |
208 | direction = WEST; | |
209 | break; | |
210 | } | |
211 | break; | |
212 | case WEST: | |
213 | switch(thisway){ | |
214 | case LEFT: | |
215 | direction = SOUTH; | |
216 | break; | |
217 | case RIGHT: | |
218 | direction = NORTH; | |
219 | break; | |
220 | case BACK: | |
221 | direction = EAST; | |
222 | break; | |
223 | } | |
224 | break; | |
225 | } | |
226 | } |