games/hack/hack.engrave.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.engrave.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.engrave.c,v 1.4 1999/11/16 02:57:04 billf Exp $ */
   4 /* $DragonFly: src/games/hack/hack.engrave.c,v 1.3 2005/05/22 03:37:05 y0netan1 Exp $ */
   5
   6 #include        "hack.h"
   7
   8 extern char nul[];
   9 extern struct obj zeroobj;
  10 struct engr {
  11         struct engr *nxt_engr;
  12         char *engr_txt;
  13         xchar engr_x, engr_y;
  14         unsigned engr_lth;      /* for save & restore; not length of text */
  15         long engr_time; /* moment engraving was (will be) finished */
  16         xchar engr_type;
  17 #define DUST    1
  18 #define ENGRAVE 2
  19 #define BURN    3
  20 } *head_engr;
  21
  22 struct engr *
  23 engr_at(x,y) xchar x,y; {
  24 struct engr *ep = head_engr;
  25         while(ep) {
  26                 if(x == ep->engr_x && y == ep->engr_y)
  27                         return(ep);
  28                 ep = ep->nxt_engr;
  29         }
  30         return((struct engr *) 0);
  31 }
  32
  33 sengr_at(s,x,y) char *s; xchar x,y; {
  34 struct engr *ep = engr_at(x,y);
  35 char *t;
  36 int n;
  37         if(ep && ep->engr_time <= moves) {
  38                 t = ep->engr_txt;
  39 /*
  40                 if(!strcmp(s,t)) return(1);
  41 */
  42                 n = strlen(s);
  43                 while(*t) {
  44                         if(!strncmp(s,t,n)) return(1);
  45                         t++;
  46                 }
  47         }
  48         return(0);
  49 }
  50
  51 u_wipe_engr(cnt)
  52 int cnt;
  53 {
  54         if(!u.uswallow && !Levitation)
  55                 wipe_engr_at(u.ux, u.uy, cnt);
  56 }
  57
  58 wipe_engr_at(x,y,cnt) xchar x,y,cnt; {
  59 struct engr *ep = engr_at(x,y);
  60 int lth,pos;
  61 char ch;
  62         if(ep){
  63                 if((ep->engr_type != DUST) || Levitation) {
  64                         cnt = rn2(1 + 50/(cnt+1)) ? 0 : 1;
  65                 }
  66                 lth = strlen(ep->engr_txt);
  67                 if(lth && cnt > 0 ) {
  68                         while(cnt--) {
  69                                 pos = rn2(lth);
  70                                 if((ch = ep->engr_txt[pos]) == ' ')
  71                                         continue;
  72                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
  73                         }
  74                 }
  75                 while(lth && ep->engr_txt[lth-1] == ' ')
  76                         ep->engr_txt[--lth] = 0;
  77                 while(ep->engr_txt[0] == ' ')
  78                         ep->engr_txt++;
  79                 if(!ep->engr_txt[0]) del_engr(ep);
  80         }
  81 }
  82
  83 read_engr_at(x,y) int x,y; {
  84 struct engr *ep = engr_at(x,y);
  85         if(ep && ep->engr_txt[0]) {
  86             switch(ep->engr_type) {
  87             case DUST:
  88                 pline("Something is written here in the dust.");
  89                 break;
  90             case ENGRAVE:
  91                 pline("Something is engraved here on the floor.");
  92                 break;
  93             case BURN:
  94                 pline("Some text has been burned here in the floor.");
  95                 break;
  96             default:
  97                 impossible("Something is written in a very strange way.");
  98             }
  99             pline("You read: \"%s\".", ep->engr_txt);
 100         }
 101 }
 102
 103 make_engr_at(x,y,s)
 104 int x,y;
 105 char *s;
 106 {
 107         struct engr *ep;
 108
 109         if(ep = engr_at(x,y))
 110             del_engr(ep);
 111         ep = (struct engr *)
 112             alloc((unsigned)(sizeof(struct engr) + strlen(s) + 1));
 113         ep->nxt_engr = head_engr;
 114         head_engr = ep;
 115         ep->engr_x = x;
 116         ep->engr_y = y;
 117         ep->engr_txt = (char *)(ep + 1);
 118         (void) strcpy(ep->engr_txt, s);
 119         ep->engr_time = 0;
 120         ep->engr_type = DUST;
 121         ep->engr_lth = strlen(s) + 1;
 122 }
 123
 124 doengrave(){
 125 int len;
 126 char *sp;
 127 struct engr *ep, *oep = engr_at(u.ux,u.uy);
 128 char buf[BUFSZ];
 129 xchar type;
 130 int spct;               /* number of leading spaces */
 131 struct obj *otmp;
 132         multi = 0;
 133
 134         if(u.uswallow) {
 135                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 136                 return(0);
 137         }
 138
 139         /* one may write with finger, weapon or wand */
 140         otmp = getobj("#-)/", "write with");
 141         if(!otmp) return(0);
 142
 143         if(otmp == &zeroobj)
 144                 otmp = 0;
 145         if(otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 146                 type = BURN;
 147                 otmp->spe--;
 148         } else {
 149                 /* first wield otmp */
 150                 if(otmp != uwep) {
 151                         if(uwep && uwep->cursed) {
 152                             /* Andreas Bormann */
 153                             pline("Since your weapon is welded to your hand,");
 154                             pline("you use the %s.", aobjnam(uwep, (char *) 0));
 155                             otmp = uwep;
 156                         } else {
 157                             if(!otmp)
 158                                 pline("You are now empty-handed.");
 159                             else if(otmp->cursed)
 160                                 pline("The %s %s to your hand!",
 161                                     aobjnam(otmp, "weld"),
 162                                     (otmp->quan == 1) ? "itself" : "themselves");
 163                             else
 164                                 pline("You now wield %s.", doname(otmp));
 165                             setuwep(otmp);
 166                         }
 167                 }
 168
 169                 if(!otmp)
 170                         type = DUST;
 171                 else
 172                 if(otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 173                 otmp->otyp == CRYSKNIFE ||
 174                 otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 175                         type = ENGRAVE;
 176                         if((int)otmp->spe <= -3) {
 177                                 type = DUST;
 178                                 pline("Your %s too dull for engraving.",
 179                                         aobjnam(otmp, "are"));
 180                                 if(oep && oep->engr_type != DUST) return(1);
 181                         }
 182                 } else  type = DUST;
 183         }
 184         if(Levitation && type != BURN){         /* riv05!a3 */
 185                 pline("You can't reach the floor!");
 186                 return(1);
 187         }
 188         if(oep && oep->engr_type == DUST){
 189                   pline("You wipe out the message that was written here.");
 190                   del_engr(oep);
 191                   oep = 0;
 192         }
 193         if(type == DUST && oep){
 194         pline("You cannot wipe out the message that is %s in the rock.",
 195                     (oep->engr_type == BURN) ? "burned" : "engraved");
 196                   return(1);
 197         }
 198
 199         pline("What do you want to %s on the floor here? ",
 200           (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 201         getlin(buf);
 202         clrlin();
 203         spct = 0;
 204         sp = buf;
 205         while(*sp == ' ') spct++, sp++;
 206         len = strlen(sp);
 207         if(!len || *buf == '\033') {
 208                 if(type == BURN) otmp->spe++;
 209                 return(0);
 210         }
 211
 212         switch(type) {
 213         case DUST:
 214         case BURN:
 215                 if(len > 15) {
 216                         multi = -(len/10);
 217                         nomovemsg = "You finished writing.";
 218                 }
 219                 break;
 220         case ENGRAVE:           /* here otmp != 0 */
 221                 {       int len2 = (otmp->spe + 3) * 2 + 1;
 222
 223                         pline("Your %s dull.", aobjnam(otmp, "get"));
 224                         if(len2 < len) {
 225                                 len = len2;
 226                                 sp[len] = 0;
 227                                 otmp->spe = -3;
 228                                 nomovemsg = "You cannot engrave more.";
 229                         } else {
 230                                 otmp->spe -= len/2;
 231                                 nomovemsg = "You finished engraving.";
 232                         }
 233                         multi = -len;
 234                 }
 235                 break;
 236         }
 237         if(oep) len += strlen(oep->engr_txt) + spct;
 238         ep = (struct engr *) alloc((unsigned)(sizeof(struct engr) + len + 1));
 239         ep->nxt_engr = head_engr;
 240         head_engr = ep;
 241         ep->engr_x = u.ux;
 242         ep->engr_y = u.uy;
 243         sp = (char *)(ep + 1);  /* (char *)ep + sizeof(struct engr) */
 244         ep->engr_txt = sp;
 245         if(oep) {
 246                 (void) strcpy(sp, oep->engr_txt);
 247                 (void) strcat(sp, buf);
 248                 del_engr(oep);
 249         } else
 250                 (void) strcpy(sp, buf);
 251         ep->engr_lth = len+1;
 252         ep->engr_type = type;
 253         ep->engr_time = moves-multi;
 254
 255         /* kludge to protect pline against excessively long texts */
 256         if(len > BUFSZ-20) sp[BUFSZ-20] = 0;
 257
 258         return(1);
 259 }
 260
 261 save_engravings(fd) int fd; {
 262 struct engr *ep = head_engr;
 263         while(ep) {
 264                 if(!ep->engr_lth || !ep->engr_txt[0]){
 265                         ep = ep->nxt_engr;
 266                         continue;
 267                 }
 268                 bwrite(fd, (char *) & (ep->engr_lth), sizeof(ep->engr_lth));
 269                 bwrite(fd, (char *) ep, sizeof(struct engr) + ep->engr_lth);
 270                 ep = ep->nxt_engr;
 271         }
 272         bwrite(fd, (char *) nul, sizeof(unsigned));
 273         head_engr = 0;
 274 }
 275
 276 rest_engravings(fd) int fd; {
 277 struct engr *ep;
 278 unsigned lth;
 279         head_engr = 0;
 280         while(1) {
 281                 mread(fd, (char *) &lth, sizeof(unsigned));
 282                 if(lth == 0) return;
 283                 ep = (struct engr *) alloc(sizeof(struct engr) + lth);
 284                 mread(fd, (char *) ep, sizeof(struct engr) + lth);
 285                 ep->nxt_engr = head_engr;
 286                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 287                 head_engr = ep;
 288         }
 289 }
 290
 291 del_engr(ep) struct engr *ep; {
 292 struct engr *ept;
 293         if(ep == head_engr)
 294                 head_engr = ep->nxt_engr;
 295         else {
 296                 for(ept = head_engr; ept; ept = ept->nxt_engr) {
 297                         if(ept->nxt_engr == ep) {
 298                                 ept->nxt_engr = ep->nxt_engr;
 299                                 goto fnd;
 300                         }
 301                 }
 302                 impossible("Error in del_engr?");
 303                 return;
 304         fnd:    ;
 305         }
 306         free((char *) ep);
 307 }