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1.1 root 1: /*
2: * Copyright (c) 1983 Regents of the University of California,
3: * All rights reserved. Redistribution permitted subject to
4: * the terms of the Berkeley Software License Agreement.
5: */
6:
7: #ifndef lint
8: static char sccsid[] = "@(#)room.c 1.3 4/24/85";
9: #endif
10:
11: #include "externs.h"
12:
13: writedes()
14: {
15: int compass;
16: register char *p;
17: register c;
18:
19: printf("\n\t%s\n", location[position].name);
20: if (beenthere[position] < 3) {
21: compass = NORTH;
22: for (p = location[position].desc; c = *p++;)
23: if (c != '-' && c != '*' && c != '+')
24: putchar(c);
25: else {
26: if (c != '*')
27: printf(truedirec(compass, c));
28: compass++;
29: }
30: }
31: }
32:
33: printobjs()
34: {
35: register unsigned int *p = location[position].objects;
36: register n;
37:
38: printf("\n");
39: for (n = 0; n < NUMOFOBJECTS; n++)
40: if (testbit(p, n) && objdes[n])
41: puts(objdes[n]);
42: }
43:
44: whichway(here)
45: struct room here;
46: {
47: switch(direction) {
48:
49: case NORTH:
50: left = here.west;
51: right = here.east;
52: ahead = here.north;
53: back = here.south;
54: break;
55:
56: case SOUTH:
57: left = here.east;
58: right = here.west;
59: ahead = here.south;
60: back = here.north;
61: break;
62:
63: case EAST:
64: left = here.north;
65: right = here.south;
66: ahead = here.east;
67: back = here.west;
68: break;
69:
70: case WEST:
71: left = here.south;
72: right = here.north;
73: ahead = here.west;
74: back = here.east;
75: break;
76:
77: }
78: }
79:
80: char *
81: truedirec(way, option)
82: int way;
83: char option;
84: {
85: switch(way) {
86:
87: case NORTH:
88: switch(direction) {
89: case NORTH:
90: return("ahead");
91: case SOUTH:
92: return(option == '+' ? "behind you" : "back");
93: case EAST:
94: return("left");
95: case WEST:
96: return("right");
97: }
98:
99: case SOUTH:
100: switch(direction) {
101: case NORTH:
102: return(option == '+' ? "behind you" : "back");
103: case SOUTH:
104: return("ahead");
105: case EAST:
106: return("right");
107: case WEST:
108: return("left");
109: }
110:
111: case EAST:
112: switch(direction) {
113: case NORTH:
114: return("right");
115: case SOUTH:
116: return("left");
117: case EAST:
118: return("ahead");
119: case WEST:
120: return(option == '+' ? "behind you" : "back");
121: }
122:
123: case WEST:
124: switch(direction) {
125: case NORTH:
126: return("left");
127: case SOUTH:
128: return("right");
129: case EAST:
130: return(option == '+' ? "behind you" : "back");
131: case WEST:
132: return("ahead");
133: }
134:
135: default:
136: printf("Error: room %d. More than four directions wanted.", position);
137: return("!!");
138: }
139: }
140:
141: newway(thisway)
142: int thisway;
143: {
144: switch(direction){
145:
146: case NORTH:
147: switch(thisway){
148: case LEFT:
149: direction = WEST;
150: break;
151: case RIGHT:
152: direction = EAST;
153: break;
154: case BACK:
155: direction = SOUTH;
156: break;
157: }
158: break;
159: case SOUTH:
160: switch(thisway){
161: case LEFT:
162: direction = EAST;
163: break;
164: case RIGHT:
165: direction = WEST;
166: break;
167: case BACK:
168: direction = NORTH;
169: break;
170: }
171: break;
172: case EAST:
173: switch(thisway){
174: case LEFT:
175: direction = NORTH;
176: break;
177: case RIGHT:
178: direction = SOUTH;
179: break;
180: case BACK:
181: direction = WEST;
182: break;
183: }
184: break;
185: case WEST:
186: switch(thisway){
187: case LEFT:
188: direction = SOUTH;
189: break;
190: case RIGHT:
191: direction = NORTH;
192: break;
193: case BACK:
194: direction = EAST;
195: break;
196: }
197: break;
198: }
199: }
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