games/hack/hack.engrave.c

   1 /*      $NetBSD: hack.engrave.c,v 1.14 2011/08/07 06:03:45 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 <stdlib.h>
  65 #include "hack.h"
  66 #include "extern.h"
  67
  68 struct engr {
  69         struct engr    *nxt_engr;
  70         char           *engr_txt;
  71         xchar           engr_x, engr_y;
  72         unsigned        engr_lth;       /* for save & restore; not length of
  73                                          * text */
  74         long            engr_time;      /* moment engraving was (will be)
  75                                          * finished */
  76         xchar           engr_type;
  77 #define DUST    1
  78 #define ENGRAVE 2
  79 #define BURN    3
  80 };
  81
  82 static struct engr *head_engr;
  83
  84 static void del_engr(struct engr *);
  85
  86 static struct engr *
  87 engr_at(xchar x, xchar y)
  88 {
  89         struct engr    *ep = head_engr;
  90         while (ep) {
  91                 if (x == ep->engr_x && y == ep->engr_y)
  92                         return (ep);
  93                 ep = ep->nxt_engr;
  94         }
  95         return ((struct engr *) 0);
  96 }
  97
  98 int
  99 sengr_at(const char *s, xchar x, xchar y)
 100 {
 101         struct engr    *ep = engr_at(x, y);
 102         char           *t;
 103         size_t n;
 104
 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             pos;
 132         char            ch;
 133         size_t lth;
 134
 135         if (ep) {
 136                 if ((ep->engr_type != DUST) || Levitation) {
 137                         cnt = rn2(1 + 50 / (cnt + 1)) ? 0 : 1;
 138                 }
 139                 lth = strlen(ep->engr_txt);
 140                 if (lth && cnt > 0) {
 141                         while (cnt--) {
 142                                 pos = rn2(lth);
 143                                 if ((ch = ep->engr_txt[pos]) == ' ')
 144                                         continue;
 145                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
 146                         }
 147                 }
 148                 while (lth && ep->engr_txt[lth - 1] == ' ')
 149                         ep->engr_txt[--lth] = 0;
 150                 while (ep->engr_txt[0] == ' ')
 151                         ep->engr_txt++;
 152                 if (!ep->engr_txt[0])
 153                         del_engr(ep);
 154         }
 155 }
 156
 157 void
 158 read_engr_at(int x, int y)
 159 {
 160         struct engr    *ep = engr_at(x, y);
 161         if (ep && ep->engr_txt[0]) {
 162                 switch (ep->engr_type) {
 163                 case DUST:
 164                         pline("Something is written here in the dust.");
 165                         break;
 166                 case ENGRAVE:
 167                         pline("Something is engraved here on the floor.");
 168                         break;
 169                 case BURN:
 170                         pline("Some text has been burned here in the floor.");
 171                         break;
 172                 default:
 173                         impossible("Something is written in a very strange way.");
 174                 }
 175                 pline("You read: \"%s\".", ep->engr_txt);
 176         }
 177 }
 178
 179 void
 180 make_engr_at(int x, int y, const char *s)
 181 {
 182         struct engr    *ep;
 183
 184         if ((ep = engr_at(x, y)) != NULL)
 185                 del_engr(ep);
 186         ep = alloc(sizeof(*ep) + strlen(s) + 1);
 187
 188         ep->nxt_engr = head_engr;
 189         head_engr = ep;
 190         ep->engr_x = x;
 191         ep->engr_y = y;
 192         ep->engr_txt = (char *) (ep + 1);
 193         (void) strcpy(ep->engr_txt, s);
 194         ep->engr_time = 0;
 195         ep->engr_type = DUST;
 196         ep->engr_lth = strlen(s) + 1;
 197 }
 198
 199 int
 200 doengrave(void)
 201 {
 202         int             len;
 203         char           *sp;
 204         struct engr    *ep, *oep = engr_at(u.ux, u.uy);
 205         char            buf[BUFSZ];
 206         xchar           type;
 207         int             spct;   /* number of leading spaces */
 208         struct obj     *otmp;
 209         multi = 0;
 210
 211         if (u.uswallow) {
 212                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 213                 return (0);
 214         }
 215         /* one may write with finger, weapon or wand */
 216         otmp = getobj("#-)/", "write with");
 217         if (!otmp)
 218                 return (0);
 219
 220         if (otmp == &zeroobj)
 221                 otmp = 0;
 222         if (otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 223                 type = BURN;
 224                 otmp->spe--;
 225         } else {
 226                 /* first wield otmp */
 227                 if (otmp != uwep) {
 228                         if (uwep && uwep->cursed) {
 229                                 /* Andreas Bormann */
 230                                 pline("Since your weapon is welded to your hand,");
 231                                 pline("you use the %s.", aobjnam(uwep, NULL));
 232                                 otmp = uwep;
 233                         } else {
 234                                 if (!otmp)
 235                                         pline("You are now empty-handed.");
 236                                 else if (otmp->cursed)
 237                                         pline("The %s %s to your hand!",
 238                                               aobjnam(otmp, "weld"),
 239                                               (otmp->quan == 1) ? "itself" : "themselves");
 240                                 else
 241                                         pline("You now wield %s.", doname(otmp));
 242                                 setuwep(otmp);
 243                         }
 244                 }
 245                 if (!otmp)
 246                         type = DUST;
 247                 else if (otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 248                          otmp->otyp == CRYSKNIFE ||
 249                          otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 250                         type = ENGRAVE;
 251                         if ((int) otmp->spe <= -3) {
 252                                 type = DUST;
 253                                 pline("Your %s too dull for engraving.",
 254                                       aobjnam(otmp, "are"));
 255                                 if (oep && oep->engr_type != DUST)
 256                                         return (1);
 257                         }
 258                 } else
 259                         type = DUST;
 260         }
 261         if (Levitation && type != BURN) {       /* riv05!a3 */
 262                 pline("You can't reach the floor!");
 263                 return (1);
 264         }
 265         if (oep && oep->engr_type == DUST) {
 266                 pline("You wipe out the message that was written here.");
 267                 del_engr(oep);
 268                 oep = 0;
 269         }
 270         if (type == DUST && oep) {
 271                 pline("You cannot wipe out the message that is %s in the rock.",
 272                       (oep->engr_type == BURN) ? "burned" : "engraved");
 273                 return (1);
 274         }
 275         pline("What do you want to %s on the floor here? ",
 276          (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 277         getlin(buf);
 278         clrlin();
 279         spct = 0;
 280         sp = buf;
 281         while (*sp == ' ')
 282                 spct++, sp++;
 283         len = strlen(sp);
 284         if (!len || *buf == '\033') {
 285                 if (type == BURN)
 286                         otmp->spe++;
 287                 return (0);
 288         }
 289         switch (type) {
 290         case DUST:
 291         case BURN:
 292                 if (len > 15) {
 293                         multi = -(len / 10);
 294                         nomovemsg = "You finished writing.";
 295                 }
 296                 break;
 297         case ENGRAVE:           /* here otmp != 0 */
 298                 {
 299                         int             len2 = (otmp->spe + 3) * 2 + 1;
 300
 301                         pline("Your %s dull.", aobjnam(otmp, "get"));
 302                         if (len2 < len) {
 303                                 len = len2;
 304                                 sp[len] = 0;
 305                                 otmp->spe = -3;
 306                                 nomovemsg = "You cannot engrave more.";
 307                         } else {
 308                                 otmp->spe -= len / 2;
 309                                 nomovemsg = "You finished engraving.";
 310                         }
 311                         multi = -len;
 312                 }
 313                 break;
 314         }
 315         if (oep)
 316                 len += strlen(oep->engr_txt) + spct;
 317         ep = alloc(sizeof(*ep) + len + 1);
 318         ep->nxt_engr = head_engr;
 319         head_engr = ep;
 320         ep->engr_x = u.ux;
 321         ep->engr_y = u.uy;
 322         sp = (char *) (ep + 1); /* (char *)ep + sizeof(struct engr) */
 323         ep->engr_txt = sp;
 324         if (oep) {
 325                 (void) strcpy(sp, oep->engr_txt);
 326                 (void) strcat(sp, buf);
 327                 del_engr(oep);
 328         } else
 329                 (void) strcpy(sp, buf);
 330         ep->engr_lth = len + 1;
 331         ep->engr_type = type;
 332         ep->engr_time = moves - multi;
 333
 334         /* kludge to protect pline against excessively long texts */
 335         if (len > BUFSZ - 20)
 336                 sp[BUFSZ - 20] = 0;
 337
 338         return (1);
 339 }
 340
 341 void
 342 save_engravings(int fd)
 343 {
 344         struct engr    *ep = head_engr;
 345         while (ep) {
 346                 if (!ep->engr_lth || !ep->engr_txt[0]) {
 347                         ep = ep->nxt_engr;
 348                         continue;
 349                 }
 350                 bwrite(fd, &(ep->engr_lth), sizeof(ep->engr_lth));
 351                 bwrite(fd, ep, sizeof(struct engr) + ep->engr_lth);
 352                 ep = ep->nxt_engr;
 353         }
 354         bwrite(fd, nul, sizeof(unsigned));
 355         head_engr = 0;
 356 }
 357
 358 void
 359 rest_engravings(int fd)
 360 {
 361         struct engr    *ep;
 362         unsigned        lth;
 363         head_engr = 0;
 364         while (1) {
 365                 mread(fd, &lth, sizeof(unsigned));
 366                 if (lth == 0)
 367                         return;
 368                 ep = alloc(sizeof(*ep) + lth);
 369                 mread(fd, ep, sizeof(*ep) + lth);
 370                 ep->nxt_engr = head_engr;
 371                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 372                 head_engr = ep;
 373         }
 374 }
 375
 376 static void
 377 del_engr(struct engr *ep)
 378 {
 379         struct engr    *ept;
 380         if (ep == head_engr)
 381                 head_engr = ep->nxt_engr;
 382         else {
 383                 for (ept = head_engr; ept; ept = ept->nxt_engr) {
 384                         if (ept->nxt_engr == ep) {
 385                                 ept->nxt_engr = ep->nxt_engr;
 386                                 goto fnd;
 387                         }
 388                 }
 389                 impossible("Error in del_engr?");
 390                 return;
 391 fnd:            ;
 392         }
 393         free(ep);
 394 }