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 1.2 2003/06/17 04:25:24 dillon Exp $ */
   5
   6 #include        "hack.h"
   7
   8 extern char *nomovemsg;
   9 extern char nul[];
  10 extern struct obj zeroobj;
  11 struct engr {
  12         struct engr *nxt_engr;
  13         char *engr_txt;
  14         xchar engr_x, engr_y;
  15         unsigned engr_lth;      /* for save & restore; not length of text */
  16         long engr_time; /* moment engraving was (will be) finished */
  17         xchar engr_type;
  18 #define DUST    1
  19 #define ENGRAVE 2
  20 #define BURN    3
  21 } *head_engr;
  22
  23 struct engr *
  24 engr_at(x,y) xchar x,y; {
  25 struct engr *ep = head_engr;
  26         while(ep) {
  27                 if(x == ep->engr_x && y == ep->engr_y)
  28                         return(ep);
  29                 ep = ep->nxt_engr;
  30         }
  31         return((struct engr *) 0);
  32 }
  33
  34 sengr_at(s,x,y) char *s; xchar x,y; {
  35 struct engr *ep = engr_at(x,y);
  36 char *t;
  37 int n;
  38         if(ep && ep->engr_time <= moves) {
  39                 t = ep->engr_txt;
  40 /*
  41                 if(!strcmp(s,t)) return(1);
  42 */
  43                 n = strlen(s);
  44                 while(*t) {
  45                         if(!strncmp(s,t,n)) return(1);
  46                         t++;
  47                 }
  48         }
  49         return(0);
  50 }
  51
  52 u_wipe_engr(cnt)
  53 int cnt;
  54 {
  55         if(!u.uswallow && !Levitation)
  56                 wipe_engr_at(u.ux, u.uy, cnt);
  57 }
  58
  59 wipe_engr_at(x,y,cnt) xchar x,y,cnt; {
  60 struct engr *ep = engr_at(x,y);
  61 int lth,pos;
  62 char ch;
  63         if(ep){
  64                 if((ep->engr_type != DUST) || Levitation) {
  65                         cnt = rn2(1 + 50/(cnt+1)) ? 0 : 1;
  66                 }
  67                 lth = strlen(ep->engr_txt);
  68                 if(lth && cnt > 0 ) {
  69                         while(cnt--) {
  70                                 pos = rn2(lth);
  71                                 if((ch = ep->engr_txt[pos]) == ' ')
  72                                         continue;
  73                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
  74                         }
  75                 }
  76                 while(lth && ep->engr_txt[lth-1] == ' ')
  77                         ep->engr_txt[--lth] = 0;
  78                 while(ep->engr_txt[0] == ' ')
  79                         ep->engr_txt++;
  80                 if(!ep->engr_txt[0]) del_engr(ep);
  81         }
  82 }
  83
  84 read_engr_at(x,y) int x,y; {
  85 struct engr *ep = engr_at(x,y);
  86         if(ep && ep->engr_txt[0]) {
  87             switch(ep->engr_type) {
  88             case DUST:
  89                 pline("Something is written here in the dust.");
  90                 break;
  91             case ENGRAVE:
  92                 pline("Something is engraved here on the floor.");
  93                 break;
  94             case BURN:
  95                 pline("Some text has been burned here in the floor.");
  96                 break;
  97             default:
  98                 impossible("Something is written in a very strange way.");
  99             }
 100             pline("You read: \"%s\".", ep->engr_txt);
 101         }
 102 }
 103
 104 make_engr_at(x,y,s)
 105 int x,y;
 106 char *s;
 107 {
 108         struct engr *ep;
 109
 110         if(ep = engr_at(x,y))
 111             del_engr(ep);
 112         ep = (struct engr *)
 113             alloc((unsigned)(sizeof(struct engr) + strlen(s) + 1));
 114         ep->nxt_engr = head_engr;
 115         head_engr = ep;
 116         ep->engr_x = x;
 117         ep->engr_y = y;
 118         ep->engr_txt = (char *)(ep + 1);
 119         (void) strcpy(ep->engr_txt, s);
 120         ep->engr_time = 0;
 121         ep->engr_type = DUST;
 122         ep->engr_lth = strlen(s) + 1;
 123 }
 124
 125 doengrave(){
 126 int len;
 127 char *sp;
 128 struct engr *ep, *oep = engr_at(u.ux,u.uy);
 129 char buf[BUFSZ];
 130 xchar type;
 131 int spct;               /* number of leading spaces */
 132 struct obj *otmp;
 133         multi = 0;
 134
 135         if(u.uswallow) {
 136                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 137                 return(0);
 138         }
 139
 140         /* one may write with finger, weapon or wand */
 141         otmp = getobj("#-)/", "write with");
 142         if(!otmp) return(0);
 143
 144         if(otmp == &zeroobj)
 145                 otmp = 0;
 146         if(otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 147                 type = BURN;
 148                 otmp->spe--;
 149         } else {
 150                 /* first wield otmp */
 151                 if(otmp != uwep) {
 152                         if(uwep && uwep->cursed) {
 153                             /* Andreas Bormann */
 154                             pline("Since your weapon is welded to your hand,");
 155                             pline("you use the %s.", aobjnam(uwep, (char *) 0));
 156                             otmp = uwep;
 157                         } else {
 158                             if(!otmp)
 159                                 pline("You are now empty-handed.");
 160                             else if(otmp->cursed)
 161                                 pline("The %s %s to your hand!",
 162                                     aobjnam(otmp, "weld"),
 163                                     (otmp->quan == 1) ? "itself" : "themselves");
 164                             else
 165                                 pline("You now wield %s.", doname(otmp));
 166                             setuwep(otmp);
 167                         }
 168                 }
 169
 170                 if(!otmp)
 171                         type = DUST;
 172                 else
 173                 if(otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 174                 otmp->otyp == CRYSKNIFE ||
 175                 otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 176                         type = ENGRAVE;
 177                         if((int)otmp->spe <= -3) {
 178                                 type = DUST;
 179                                 pline("Your %s too dull for engraving.",
 180                                         aobjnam(otmp, "are"));
 181                                 if(oep && oep->engr_type != DUST) return(1);
 182                         }
 183                 } else  type = DUST;
 184         }
 185         if(Levitation && type != BURN){         /* riv05!a3 */
 186                 pline("You can't reach the floor!");
 187                 return(1);
 188         }
 189         if(oep && oep->engr_type == DUST){
 190                   pline("You wipe out the message that was written here.");
 191                   del_engr(oep);
 192                   oep = 0;
 193         }
 194         if(type == DUST && oep){
 195         pline("You cannot wipe out the message that is %s in the rock.",
 196                     (oep->engr_type == BURN) ? "burned" : "engraved");
 197                   return(1);
 198         }
 199
 200         pline("What do you want to %s on the floor here? ",
 201           (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 202         getlin(buf);
 203         clrlin();
 204         spct = 0;
 205         sp = buf;
 206         while(*sp == ' ') spct++, sp++;
 207         len = strlen(sp);
 208         if(!len || *buf == '\033') {
 209                 if(type == BURN) otmp->spe++;
 210                 return(0);
 211         }
 212
 213         switch(type) {
 214         case DUST:
 215         case BURN:
 216                 if(len > 15) {
 217                         multi = -(len/10);
 218                         nomovemsg = "You finished writing.";
 219                 }
 220                 break;
 221         case ENGRAVE:           /* here otmp != 0 */
 222                 {       int len2 = (otmp->spe + 3) * 2 + 1;
 223
 224                         pline("Your %s dull.", aobjnam(otmp, "get"));
 225                         if(len2 < len) {
 226                                 len = len2;
 227                                 sp[len] = 0;
 228                                 otmp->spe = -3;
 229                                 nomovemsg = "You cannot engrave more.";
 230                         } else {
 231                                 otmp->spe -= len/2;
 232                                 nomovemsg = "You finished engraving.";
 233                         }
 234                         multi = -len;
 235                 }
 236                 break;
 237         }
 238         if(oep) len += strlen(oep->engr_txt) + spct;
 239         ep = (struct engr *) alloc((unsigned)(sizeof(struct engr) + len + 1));
 240         ep->nxt_engr = head_engr;
 241         head_engr = ep;
 242         ep->engr_x = u.ux;
 243         ep->engr_y = u.uy;
 244         sp = (char *)(ep + 1);  /* (char *)ep + sizeof(struct engr) */
 245         ep->engr_txt = sp;
 246         if(oep) {
 247                 (void) strcpy(sp, oep->engr_txt);
 248                 (void) strcat(sp, buf);
 249                 del_engr(oep);
 250         } else
 251                 (void) strcpy(sp, buf);
 252         ep->engr_lth = len+1;
 253         ep->engr_type = type;
 254         ep->engr_time = moves-multi;
 255
 256         /* kludge to protect pline against excessively long texts */
 257         if(len > BUFSZ-20) sp[BUFSZ-20] = 0;
 258
 259         return(1);
 260 }
 261
 262 save_engravings(fd) int fd; {
 263 struct engr *ep = head_engr;
 264         while(ep) {
 265                 if(!ep->engr_lth || !ep->engr_txt[0]){
 266                         ep = ep->nxt_engr;
 267                         continue;
 268                 }
 269                 bwrite(fd, (char *) & (ep->engr_lth), sizeof(ep->engr_lth));
 270                 bwrite(fd, (char *) ep, sizeof(struct engr) + ep->engr_lth);
 271                 ep = ep->nxt_engr;
 272         }
 273         bwrite(fd, (char *) nul, sizeof(unsigned));
 274         head_engr = 0;
 275 }
 276
 277 rest_engravings(fd) int fd; {
 278 struct engr *ep;
 279 unsigned lth;
 280         head_engr = 0;
 281         while(1) {
 282                 mread(fd, (char *) &lth, sizeof(unsigned));
 283                 if(lth == 0) return;
 284                 ep = (struct engr *) alloc(sizeof(struct engr) + lth);
 285                 mread(fd, (char *) ep, sizeof(struct engr) + lth);
 286                 ep->nxt_engr = head_engr;
 287                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 288                 head_engr = ep;
 289         }
 290 }
 291
 292 del_engr(ep) struct engr *ep; {
 293 struct engr *ept;
 294         if(ep == head_engr)
 295                 head_engr = ep->nxt_engr;
 296         else {
 297                 for(ept = head_engr; ept; ept = ept->nxt_engr) {
 298                         if(ept->nxt_engr == ep) {
 299                                 ept->nxt_engr = ep->nxt_engr;
 300                                 goto fnd;
 301                         }
 302                 }
 303                 impossible("Error in del_engr?");
 304                 return;
 305         fnd:    ;
 306         }
 307         free((char *) ep);
 308 }