1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
2 /* hack.engrave.c - version 1.0.3 */
3
4 #include "hack.h"
5
6 extern char *nomovemsg;
7 extern char nul[];
8 extern struct obj zeroobj;
9 struct engr {
10 struct engr *nxt_engr;
11 char *engr_txt;
12 xchar engr_x, engr_y;
13 unsigned engr_lth; /* for save & restore; not length of text */
14 long engr_time; /* moment engraving was (will be) finished */
15 xchar engr_type;
16 #define DUST 1
17 #define ENGRAVE 2
18 #define BURN 3
19 } *head_engr;
20
21 struct engr *
engr_at(x,y)22 engr_at(x,y) register xchar x,y; {
23 register struct engr *ep = head_engr;
24 while(ep) {
25 if(x == ep->engr_x && y == ep->engr_y)
26 return(ep);
27 ep = ep->nxt_engr;
28 }
29 return((struct engr *) 0);
30 }
31
sengr_at(s,x,y)32 sengr_at(s,x,y) register char *s; register xchar x,y; {
33 register struct engr *ep = engr_at(x,y);
34 register char *t;
35 register int n;
36 if(ep && ep->engr_time <= moves) {
37 t = ep->engr_txt;
38 /*
39 if(!strcmp(s,t)) return(1);
40 */
41 n = strlen(s);
42 while(*t) {
43 if(!strncmp(s,t,n)) return(1);
44 t++;
45 }
46 }
47 return(0);
48 }
49
u_wipe_engr(cnt)50 u_wipe_engr(cnt)
51 register int cnt;
52 {
53 if(!u.uswallow && !Levitation)
54 wipe_engr_at(u.ux, u.uy, cnt);
55 }
56
wipe_engr_at(x,y,cnt)57 wipe_engr_at(x,y,cnt) register xchar x,y,cnt; {
58 register struct engr *ep = engr_at(x,y);
59 register int lth,pos;
60 char ch;
61 if(ep){
62 if((ep->engr_type != DUST) || Levitation) {
63 cnt = rn2(1 + 50/(cnt+1)) ? 0 : 1;
64 }
65 lth = strlen(ep->engr_txt);
66 if(lth && cnt > 0 ) {
67 while(cnt--) {
68 pos = rn2(lth);
69 if((ch = ep->engr_txt[pos]) == ' ')
70 continue;
71 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
72 }
73 }
74 while(lth && ep->engr_txt[lth-1] == ' ')
75 ep->engr_txt[--lth] = 0;
76 while(ep->engr_txt[0] == ' ')
77 ep->engr_txt++;
78 if(!ep->engr_txt[0]) del_engr(ep);
79 }
80 }
81
read_engr_at(x,y)82 read_engr_at(x,y) register int x,y; {
83 register struct engr *ep = engr_at(x,y);
84 if(ep && ep->engr_txt[0]) {
85 switch(ep->engr_type) {
86 case DUST:
87 pline("Something is written here in the dust.");
88 break;
89 case ENGRAVE:
90 pline("Something is engraved here on the floor.");
91 break;
92 case BURN:
93 pline("Some text has been burned here in the floor.");
94 break;
95 default:
96 impossible("Something is written in a very strange way.");
97 }
98 pline("You read: \"%s\".", ep->engr_txt);
99 }
100 }
101
make_engr_at(x,y,s)102 make_engr_at(x,y,s)
103 register int x,y;
104 register char *s;
105 {
106 register struct engr *ep;
107
108 if(ep = engr_at(x,y))
109 del_engr(ep);
110 ep = (struct engr *)
111 alloc((unsigned)(sizeof(struct engr) + strlen(s) + 1));
112 ep->nxt_engr = head_engr;
113 head_engr = ep;
114 ep->engr_x = x;
115 ep->engr_y = y;
116 ep->engr_txt = (char *)(ep + 1);
117 (void) strcpy(ep->engr_txt, s);
118 ep->engr_time = 0;
119 ep->engr_type = DUST;
120 ep->engr_lth = strlen(s) + 1;
121 }
122
doengrave()123 doengrave(){
124 register int len;
125 register char *sp;
126 register struct engr *ep, *oep = engr_at(u.ux,u.uy);
127 char buf[BUFSZ];
128 xchar type;
129 int spct; /* number of leading spaces */
130 register struct obj *otmp;
131 multi = 0;
132
133 if(u.uswallow) {
134 pline("You're joking. Hahaha!"); /* riv05!a3 */
135 return(0);
136 }
137
138 /* one may write with finger, weapon or wand */
139 otmp = getobj("#-)/", "write with");
140 if(!otmp) return(0);
141
142 if(otmp == &zeroobj)
143 otmp = 0;
144 if(otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
145 type = BURN;
146 otmp->spe--;
147 } else {
148 /* first wield otmp */
149 if(otmp != uwep) {
150 if(uwep && uwep->cursed) {
151 /* Andreas Bormann */
152 pline("Since your weapon is welded to your hand,");
153 pline("you use the %s.", aobjnam(uwep, (char *) 0));
154 otmp = uwep;
155 } else {
156 if(!otmp)
157 pline("You are now empty-handed.");
158 else if(otmp->cursed)
159 pline("The %s %s to your hand!",
160 aobjnam(otmp, "weld"),
161 (otmp->quan == 1) ? "itself" : "themselves");
162 else
163 pline("You now wield %s.", doname(otmp));
164 setuwep(otmp);
165 }
166 }
167
168 if(!otmp)
169 type = DUST;
170 else
171 if(otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
172 otmp->otyp == CRYSKNIFE ||
173 otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
174 type = ENGRAVE;
175 if((int)otmp->spe <= -3) {
176 type = DUST;
177 pline("Your %s too dull for engraving.",
178 aobjnam(otmp, "are"));
179 if(oep && oep->engr_type != DUST) return(1);
180 }
181 } else type = DUST;
182 }
183 if(Levitation && type != BURN){ /* riv05!a3 */
184 pline("You can't reach the floor!");
185 return(1);
186 }
187 if(oep && oep->engr_type == DUST){
188 pline("You wipe out the message that was written here.");
189 del_engr(oep);
190 oep = 0;
191 }
192 if(type == DUST && oep){
193 pline("You cannot wipe out the message that is %s in the rock.",
194 (oep->engr_type == BURN) ? "burned" : "engraved");
195 return(1);
196 }
197
198 pline("What do you want to %s on the floor here? ",
199 (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
200 getlin(buf);
201 clrlin();
202 spct = 0;
203 sp = buf;
204 while(*sp == ' ') spct++, sp++;
205 len = strlen(sp);
206 if(!len || *buf == '\033') {
207 if(type == BURN) otmp->spe++;
208 return(0);
209 }
210
211 switch(type) {
212 case DUST:
213 case BURN:
214 if(len > 15) {
215 multi = -(len/10);
216 nomovemsg = "You finished writing.";
217 }
218 break;
219 case ENGRAVE: /* here otmp != 0 */
220 { int len2 = (otmp->spe + 3) * 2 + 1;
221
222 pline("Your %s dull.", aobjnam(otmp, "get"));
223 if(len2 < len) {
224 len = len2;
225 sp[len] = 0;
226 otmp->spe = -3;
227 nomovemsg = "You cannot engrave more.";
228 } else {
229 otmp->spe -= len/2;
230 nomovemsg = "You finished engraving.";
231 }
232 multi = -len;
233 }
234 break;
235 }
236 if(oep) len += strlen(oep->engr_txt) + spct;
237 ep = (struct engr *) alloc((unsigned)(sizeof(struct engr) + len + 1));
238 ep->nxt_engr = head_engr;
239 head_engr = ep;
240 ep->engr_x = u.ux;
241 ep->engr_y = u.uy;
242 sp = (char *)(ep + 1); /* (char *)ep + sizeof(struct engr) */
243 ep->engr_txt = sp;
244 if(oep) {
245 (void) strcpy(sp, oep->engr_txt);
246 (void) strcat(sp, buf);
247 del_engr(oep);
248 } else
249 (void) strcpy(sp, buf);
250 ep->engr_lth = len+1;
251 ep->engr_type = type;
252 ep->engr_time = moves-multi;
253
254 /* kludge to protect pline against excessively long texts */
255 if(len > BUFSZ-20) sp[BUFSZ-20] = 0;
256
257 return(1);
258 }
259
save_engravings(fd)260 save_engravings(fd) int fd; {
261 register struct engr *ep = head_engr;
262 while(ep) {
263 if(!ep->engr_lth || !ep->engr_txt[0]){
264 ep = ep->nxt_engr;
265 continue;
266 }
267 bwrite(fd, (char *) & (ep->engr_lth), sizeof(ep->engr_lth));
268 bwrite(fd, (char *) ep, sizeof(struct engr) + ep->engr_lth);
269 ep = ep->nxt_engr;
270 }
271 bwrite(fd, (char *) nul, sizeof(unsigned));
272 head_engr = 0;
273 }
274
rest_engravings(fd)275 rest_engravings(fd) int fd; {
276 register struct engr *ep;
277 unsigned lth;
278 head_engr = 0;
279 while(1) {
280 mread(fd, (char *) <h, sizeof(unsigned));
281 if(lth == 0) return;
282 ep = (struct engr *) alloc(sizeof(struct engr) + lth);
283 mread(fd, (char *) ep, sizeof(struct engr) + lth);
284 ep->nxt_engr = head_engr;
285 ep->engr_txt = (char *) (ep + 1); /* Andreas Bormann */
286 head_engr = ep;
287 }
288 }
289
del_engr(ep)290 del_engr(ep) register struct engr *ep; {
291 register struct engr *ept;
292 if(ep == head_engr)
293 head_engr = ep->nxt_engr;
294 else {
295 for(ept = head_engr; ept; ept = ept->nxt_engr) {
296 if(ept->nxt_engr == ep) {
297 ept->nxt_engr = ep->nxt_engr;
298 goto fnd;
299 }
300 }
301 impossible("Error in del_engr?");
302 return;
303 fnd: ;
304 }
305 free((char *) ep);
306 }
307