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1.1 root 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 *
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:
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:
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:
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:
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:
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:
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:
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:
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:
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: }
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