hack/hack.engrave.c

   1 /*      $NetBSD: hack.engrave.c,v 1.8 2009/06/07 20:30:49 dholland Exp $        */
   2
   3 /*
   4  * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
   5  * Amsterdam
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met:
  11  *
  12  * - Redistributions of source code must retain the above copyright notice,
  13  * this list of conditions and the following disclaimer.
  14  *
  15  * - Redistributions in binary form must reproduce the above copyright
  16  * notice, this list of conditions and the following disclaimer in the
  17  * documentation and/or other materials provided with the distribution.
  18  *
  19  * - Neither the name of the Stichting Centrum voor Wiskunde en
  20  * Informatica, nor the names of its contributors may be used to endorse or
  21  * promote products derived from this software without specific prior
  22  * written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  25  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  27  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  28  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  30  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  31  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  33  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  34  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
  39  * All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. The name of the author may not be used to endorse or promote products
  50  *    derived from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  53  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  54  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
  55  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  56  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  57  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  58  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  59  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  60  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  61  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  */
  63
  64 #include <sys/cdefs.h>
  65 #ifndef lint
  66 __RCSID("$NetBSD: hack.engrave.c,v 1.8 2009/06/07 20:30:49 dholland Exp $");
  67 #endif                          /* not lint */
  68
  69 #include <stdlib.h>
  70 #include "hack.h"
  71 #include "extern.h"
  72
  73 struct engr {
  74         struct engr    *nxt_engr;
  75         char           *engr_txt;
  76         xchar           engr_x, engr_y;
  77         unsigned        engr_lth;       /* for save & restore; not length of
  78                                          * text */
  79         long            engr_time;      /* moment engraving was (will be)
  80                                          * finished */
  81         xchar           engr_type;
  82 #define DUST    1
  83 #define ENGRAVE 2
  84 #define BURN    3
  85 }              *head_engr;
  86
  87 struct engr    *
  88 engr_at(xchar x, xchar y)
  89 {
  90         struct engr    *ep = head_engr;
  91         while (ep) {
  92                 if (x == ep->engr_x && y == ep->engr_y)
  93                         return (ep);
  94                 ep = ep->nxt_engr;
  95         }
  96         return ((struct engr *) 0);
  97 }
  98
  99 int
 100 sengr_at(const char *s, xchar x, xchar y)
 101 {
 102         struct engr    *ep = engr_at(x, y);
 103         char           *t;
 104         int             n;
 105         if (ep && ep->engr_time <= moves) {
 106                 t = ep->engr_txt;
 107                 /*
 108                                 if(!strcmp(s,t)) return(1);
 109                 */
 110                 n = strlen(s);
 111                 while (*t) {
 112                         if (!strncmp(s, t, n))
 113                                 return (1);
 114                         t++;
 115                 }
 116         }
 117         return (0);
 118 }
 119
 120 void
 121 u_wipe_engr(int cnt)
 122 {
 123         if (!u.uswallow && !Levitation)
 124                 wipe_engr_at(u.ux, u.uy, cnt);
 125 }
 126
 127 void
 128 wipe_engr_at(xchar x, xchar y, xchar cnt)
 129 {
 130         struct engr    *ep = engr_at(x, y);
 131         int             lth, pos;
 132         char            ch;
 133         if (ep) {
 134                 if ((ep->engr_type != DUST) || Levitation) {
 135                         cnt = rn2(1 + 50 / (cnt + 1)) ? 0 : 1;
 136                 }
 137                 lth = strlen(ep->engr_txt);
 138                 if (lth && cnt > 0) {
 139                         while (cnt--) {
 140                                 pos = rn2(lth);
 141                                 if ((ch = ep->engr_txt[pos]) == ' ')
 142                                         continue;
 143                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
 144                         }
 145                 }
 146                 while (lth && ep->engr_txt[lth - 1] == ' ')
 147                         ep->engr_txt[--lth] = 0;
 148                 while (ep->engr_txt[0] == ' ')
 149                         ep->engr_txt++;
 150                 if (!ep->engr_txt[0])
 151                         del_engr(ep);
 152         }
 153 }
 154
 155 void
 156 read_engr_at(int x, int y)
 157 {
 158         struct engr    *ep = engr_at(x, y);
 159         if (ep && ep->engr_txt[0]) {
 160                 switch (ep->engr_type) {
 161                 case DUST:
 162                         pline("Something is written here in the dust.");
 163                         break;
 164                 case ENGRAVE:
 165                         pline("Something is engraved here on the floor.");
 166                         break;
 167                 case BURN:
 168                         pline("Some text has been burned here in the floor.");
 169                         break;
 170                 default:
 171                         impossible("Something is written in a very strange way.");
 172                 }
 173                 pline("You read: \"%s\".", ep->engr_txt);
 174         }
 175 }
 176
 177 void
 178 make_engr_at(int x, int y, const char *s)
 179 {
 180         struct engr    *ep;
 181
 182         if ((ep = engr_at(x, y)) != NULL)
 183                 del_engr(ep);
 184         ep = (struct engr *)
 185                 alloc((unsigned) (sizeof(struct engr) + strlen(s) + 1));
 186         ep->nxt_engr = head_engr;
 187         head_engr = ep;
 188         ep->engr_x = x;
 189         ep->engr_y = y;
 190         ep->engr_txt = (char *) (ep + 1);
 191         (void) strcpy(ep->engr_txt, s);
 192         ep->engr_time = 0;
 193         ep->engr_type = DUST;
 194         ep->engr_lth = strlen(s) + 1;
 195 }
 196
 197 int
 198 doengrave(void)
 199 {
 200         int             len;
 201         char           *sp;
 202         struct engr    *ep, *oep = engr_at(u.ux, u.uy);
 203         char            buf[BUFSZ];
 204         xchar           type;
 205         int             spct;   /* number of leading spaces */
 206         struct obj     *otmp;
 207         multi = 0;
 208
 209         if (u.uswallow) {
 210                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 211                 return (0);
 212         }
 213         /* one may write with finger, weapon or wand */
 214         otmp = getobj("#-)/", "write with");
 215         if (!otmp)
 216                 return (0);
 217
 218         if (otmp == &zeroobj)
 219                 otmp = 0;
 220         if (otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 221                 type = BURN;
 222                 otmp->spe--;
 223         } else {
 224                 /* first wield otmp */
 225                 if (otmp != uwep) {
 226                         if (uwep && uwep->cursed) {
 227                                 /* Andreas Bormann */
 228                                 pline("Since your weapon is welded to your hand,");
 229                                 pline("you use the %s.", aobjnam(uwep, (char *) 0));
 230                                 otmp = uwep;
 231                         } else {
 232                                 if (!otmp)
 233                                         pline("You are now empty-handed.");
 234                                 else if (otmp->cursed)
 235                                         pline("The %s %s to your hand!",
 236                                               aobjnam(otmp, "weld"),
 237                                               (otmp->quan == 1) ? "itself" : "themselves");
 238                                 else
 239                                         pline("You now wield %s.", doname(otmp));
 240                                 setuwep(otmp);
 241                         }
 242                 }
 243                 if (!otmp)
 244                         type = DUST;
 245                 else if (otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 246                          otmp->otyp == CRYSKNIFE ||
 247                          otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 248                         type = ENGRAVE;
 249                         if ((int) otmp->spe <= -3) {
 250                                 type = DUST;
 251                                 pline("Your %s too dull for engraving.",
 252                                       aobjnam(otmp, "are"));
 253                                 if (oep && oep->engr_type != DUST)
 254                                         return (1);
 255                         }
 256                 } else
 257                         type = DUST;
 258         }
 259         if (Levitation && type != BURN) {       /* riv05!a3 */
 260                 pline("You can't reach the floor!");
 261                 return (1);
 262         }
 263         if (oep && oep->engr_type == DUST) {
 264                 pline("You wipe out the message that was written here.");
 265                 del_engr(oep);
 266                 oep = 0;
 267         }
 268         if (type == DUST && oep) {
 269                 pline("You cannot wipe out the message that is %s in the rock.",
 270                       (oep->engr_type == BURN) ? "burned" : "engraved");
 271                 return (1);
 272         }
 273         pline("What do you want to %s on the floor here? ",
 274          (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 275         getlin(buf);
 276         clrlin();
 277         spct = 0;
 278         sp = buf;
 279         while (*sp == ' ')
 280                 spct++, sp++;
 281         len = strlen(sp);
 282         if (!len || *buf == '\033') {
 283                 if (type == BURN)
 284                         otmp->spe++;
 285                 return (0);
 286         }
 287         switch (type) {
 288         case DUST:
 289         case BURN:
 290                 if (len > 15) {
 291                         multi = -(len / 10);
 292                         nomovemsg = "You finished writing.";
 293                 }
 294                 break;
 295         case ENGRAVE:           /* here otmp != 0 */
 296                 {
 297                         int             len2 = (otmp->spe + 3) * 2 + 1;
 298
 299                         pline("Your %s dull.", aobjnam(otmp, "get"));
 300                         if (len2 < len) {
 301                                 len = len2;
 302                                 sp[len] = 0;
 303                                 otmp->spe = -3;
 304                                 nomovemsg = "You cannot engrave more.";
 305                         } else {
 306                                 otmp->spe -= len / 2;
 307                                 nomovemsg = "You finished engraving.";
 308                         }
 309                         multi = -len;
 310                 }
 311                 break;
 312         }
 313         if (oep)
 314                 len += strlen(oep->engr_txt) + spct;
 315         ep = (struct engr *) alloc((unsigned) (sizeof(struct engr) + len + 1));
 316         ep->nxt_engr = head_engr;
 317         head_engr = ep;
 318         ep->engr_x = u.ux;
 319         ep->engr_y = u.uy;
 320         sp = (char *) (ep + 1); /* (char *)ep + sizeof(struct engr) */
 321         ep->engr_txt = sp;
 322         if (oep) {
 323                 (void) strcpy(sp, oep->engr_txt);
 324                 (void) strcat(sp, buf);
 325                 del_engr(oep);
 326         } else
 327                 (void) strcpy(sp, buf);
 328         ep->engr_lth = len + 1;
 329         ep->engr_type = type;
 330         ep->engr_time = moves - multi;
 331
 332         /* kludge to protect pline against excessively long texts */
 333         if (len > BUFSZ - 20)
 334                 sp[BUFSZ - 20] = 0;
 335
 336         return (1);
 337 }
 338
 339 void
 340 save_engravings(int fd)
 341 {
 342         struct engr    *ep = head_engr;
 343         while (ep) {
 344                 if (!ep->engr_lth || !ep->engr_txt[0]) {
 345                         ep = ep->nxt_engr;
 346                         continue;
 347                 }
 348                 bwrite(fd, &(ep->engr_lth), sizeof(ep->engr_lth));
 349                 bwrite(fd, ep, sizeof(struct engr) + ep->engr_lth);
 350                 ep = ep->nxt_engr;
 351         }
 352         bwrite(fd, nul, sizeof(unsigned));
 353         head_engr = 0;
 354 }
 355
 356 void
 357 rest_engravings(int fd)
 358 {
 359         struct engr    *ep;
 360         unsigned        lth;
 361         head_engr = 0;
 362         while (1) {
 363                 mread(fd, (char *) &lth, sizeof(unsigned));
 364                 if (lth == 0)
 365                         return;
 366                 ep = (struct engr *) alloc(sizeof(struct engr) + lth);
 367                 mread(fd, (char *) ep, sizeof(struct engr) + lth);
 368                 ep->nxt_engr = head_engr;
 369                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 370                 head_engr = ep;
 371         }
 372 }
 373
 374 void
 375 del_engr(struct engr *ep)
 376 {
 377         struct engr    *ept;
 378         if (ep == head_engr)
 379                 head_engr = ep->nxt_engr;
 380         else {
 381                 for (ept = head_engr; ept; ept = ept->nxt_engr) {
 382                         if (ept->nxt_engr == ep) {
 383                                 ept->nxt_engr = ep->nxt_engr;
 384                                 goto fnd;
 385                         }
 386                 }
 387                 impossible("Error in del_engr?");
 388                 return;
 389 fnd:            ;
 390         }
 391         free((char *) ep);
 392 }