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 <sys/cdefs.h>
  65 #ifndef lint
  66 __RCSID("$NetBSD: hack.engrave.c,v 1.14 2011/08/07 06:03:45 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 };
  86
  87 static struct engr *head_engr;
  88
  89 static void del_engr(struct engr *);
  90
  91 static struct engr *
  92 engr_at(xchar x, xchar y)
  93 {
  94         struct engr    *ep = head_engr;
  95         while (ep) {
  96                 if (x == ep->engr_x && y == ep->engr_y)
  97                         return (ep);
  98                 ep = ep->nxt_engr;
  99         }
 100         return ((struct engr *) 0);
 101 }
 102
 103 int
 104 sengr_at(const char *s, xchar x, xchar y)
 105 {
 106         struct engr    *ep = engr_at(x, y);
 107         char           *t;
 108         size_t n;
 109
 110         if (ep && ep->engr_time <= moves) {
 111                 t = ep->engr_txt;
 112                 /*
 113                                 if(!strcmp(s,t)) return(1);
 114                 */
 115                 n = strlen(s);
 116                 while (*t) {
 117                         if (!strncmp(s, t, n))
 118                                 return (1);
 119                         t++;
 120                 }
 121         }
 122         return (0);
 123 }
 124
 125 void
 126 u_wipe_engr(int cnt)
 127 {
 128         if (!u.uswallow && !Levitation)
 129                 wipe_engr_at(u.ux, u.uy, cnt);
 130 }
 131
 132 void
 133 wipe_engr_at(xchar x, xchar y, xchar cnt)
 134 {
 135         struct engr    *ep = engr_at(x, y);
 136         int             pos;
 137         char            ch;
 138         size_t lth;
 139
 140         if (ep) {
 141                 if ((ep->engr_type != DUST) || Levitation) {
 142                         cnt = rn2(1 + 50 / (cnt + 1)) ? 0 : 1;
 143                 }
 144                 lth = strlen(ep->engr_txt);
 145                 if (lth && cnt > 0) {
 146                         while (cnt--) {
 147                                 pos = rn2(lth);
 148                                 if ((ch = ep->engr_txt[pos]) == ' ')
 149                                         continue;
 150                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
 151                         }
 152                 }
 153                 while (lth && ep->engr_txt[lth - 1] == ' ')
 154                         ep->engr_txt[--lth] = 0;
 155                 while (ep->engr_txt[0] == ' ')
 156                         ep->engr_txt++;
 157                 if (!ep->engr_txt[0])
 158                         del_engr(ep);
 159         }
 160 }
 161
 162 void
 163 read_engr_at(int x, int y)
 164 {
 165         struct engr    *ep = engr_at(x, y);
 166         if (ep && ep->engr_txt[0]) {
 167                 switch (ep->engr_type) {
 168                 case DUST:
 169                         pline("Something is written here in the dust.");
 170                         break;
 171                 case ENGRAVE:
 172                         pline("Something is engraved here on the floor.");
 173                         break;
 174                 case BURN:
 175                         pline("Some text has been burned here in the floor.");
 176                         break;
 177                 default:
 178                         impossible("Something is written in a very strange way.");
 179                 }
 180                 pline("You read: \"%s\".", ep->engr_txt);
 181         }
 182 }
 183
 184 void
 185 make_engr_at(int x, int y, const char *s)
 186 {
 187         struct engr    *ep;
 188
 189         if ((ep = engr_at(x, y)) != NULL)
 190                 del_engr(ep);
 191         ep = alloc(sizeof(*ep) + strlen(s) + 1);
 192
 193         ep->nxt_engr = head_engr;
 194         head_engr = ep;
 195         ep->engr_x = x;
 196         ep->engr_y = y;
 197         ep->engr_txt = (char *) (ep + 1);
 198         (void) strcpy(ep->engr_txt, s);
 199         ep->engr_time = 0;
 200         ep->engr_type = DUST;
 201         ep->engr_lth = strlen(s) + 1;
 202 }
 203
 204 int
 205 doengrave(void)
 206 {
 207         int             len;
 208         char           *sp;
 209         struct engr    *ep, *oep = engr_at(u.ux, u.uy);
 210         char            buf[BUFSZ];
 211         xchar           type;
 212         int             spct;   /* number of leading spaces */
 213         struct obj     *otmp;
 214         multi = 0;
 215
 216         if (u.uswallow) {
 217                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 218                 return (0);
 219         }
 220         /* one may write with finger, weapon or wand */
 221         otmp = getobj("#-)/", "write with");
 222         if (!otmp)
 223                 return (0);
 224
 225         if (otmp == &zeroobj)
 226                 otmp = 0;
 227         if (otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 228                 type = BURN;
 229                 otmp->spe--;
 230         } else {
 231                 /* first wield otmp */
 232                 if (otmp != uwep) {
 233                         if (uwep && uwep->cursed) {
 234                                 /* Andreas Bormann */
 235                                 pline("Since your weapon is welded to your hand,");
 236                                 pline("you use the %s.", aobjnam(uwep, NULL));
 237                                 otmp = uwep;
 238                         } else {
 239                                 if (!otmp)
 240                                         pline("You are now empty-handed.");
 241                                 else if (otmp->cursed)
 242                                         pline("The %s %s to your hand!",
 243                                               aobjnam(otmp, "weld"),
 244                                               (otmp->quan == 1) ? "itself" : "themselves");
 245                                 else
 246                                         pline("You now wield %s.", doname(otmp));
 247                                 setuwep(otmp);
 248                         }
 249                 }
 250                 if (!otmp)
 251                         type = DUST;
 252                 else if (otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 253                          otmp->otyp == CRYSKNIFE ||
 254                          otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 255                         type = ENGRAVE;
 256                         if ((int) otmp->spe <= -3) {
 257                                 type = DUST;
 258                                 pline("Your %s too dull for engraving.",
 259                                       aobjnam(otmp, "are"));
 260                                 if (oep && oep->engr_type != DUST)
 261                                         return (1);
 262                         }
 263                 } else
 264                         type = DUST;
 265         }
 266         if (Levitation && type != BURN) {       /* riv05!a3 */
 267                 pline("You can't reach the floor!");
 268                 return (1);
 269         }
 270         if (oep && oep->engr_type == DUST) {
 271                 pline("You wipe out the message that was written here.");
 272                 del_engr(oep);
 273                 oep = 0;
 274         }
 275         if (type == DUST && oep) {
 276                 pline("You cannot wipe out the message that is %s in the rock.",
 277                       (oep->engr_type == BURN) ? "burned" : "engraved");
 278                 return (1);
 279         }
 280         pline("What do you want to %s on the floor here? ",
 281          (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 282         getlin(buf);
 283         clrlin();
 284         spct = 0;
 285         sp = buf;
 286         while (*sp == ' ')
 287                 spct++, sp++;
 288         len = strlen(sp);
 289         if (!len || *buf == '\033') {
 290                 if (type == BURN)
 291                         otmp->spe++;
 292                 return (0);
 293         }
 294         switch (type) {
 295         case DUST:
 296         case BURN:
 297                 if (len > 15) {
 298                         multi = -(len / 10);
 299                         nomovemsg = "You finished writing.";
 300                 }
 301                 break;
 302         case ENGRAVE:           /* here otmp != 0 */
 303                 {
 304                         int             len2 = (otmp->spe + 3) * 2 + 1;
 305
 306                         pline("Your %s dull.", aobjnam(otmp, "get"));
 307                         if (len2 < len) {
 308                                 len = len2;
 309                                 sp[len] = 0;
 310                                 otmp->spe = -3;
 311                                 nomovemsg = "You cannot engrave more.";
 312                         } else {
 313                                 otmp->spe -= len / 2;
 314                                 nomovemsg = "You finished engraving.";
 315                         }
 316                         multi = -len;
 317                 }
 318                 break;
 319         }
 320         if (oep)
 321                 len += strlen(oep->engr_txt) + spct;
 322         ep = alloc(sizeof(*ep) + len + 1);
 323         ep->nxt_engr = head_engr;
 324         head_engr = ep;
 325         ep->engr_x = u.ux;
 326         ep->engr_y = u.uy;
 327         sp = (char *) (ep + 1); /* (char *)ep + sizeof(struct engr) */
 328         ep->engr_txt = sp;
 329         if (oep) {
 330                 (void) strcpy(sp, oep->engr_txt);
 331                 (void) strcat(sp, buf);
 332                 del_engr(oep);
 333         } else
 334                 (void) strcpy(sp, buf);
 335         ep->engr_lth = len + 1;
 336         ep->engr_type = type;
 337         ep->engr_time = moves - multi;
 338
 339         /* kludge to protect pline against excessively long texts */
 340         if (len > BUFSZ - 20)
 341                 sp[BUFSZ - 20] = 0;
 342
 343         return (1);
 344 }
 345
 346 void
 347 save_engravings(int fd)
 348 {
 349         struct engr    *ep = head_engr;
 350         while (ep) {
 351                 if (!ep->engr_lth || !ep->engr_txt[0]) {
 352                         ep = ep->nxt_engr;
 353                         continue;
 354                 }
 355                 bwrite(fd, &(ep->engr_lth), sizeof(ep->engr_lth));
 356                 bwrite(fd, ep, sizeof(struct engr) + ep->engr_lth);
 357                 ep = ep->nxt_engr;
 358         }
 359         bwrite(fd, nul, sizeof(unsigned));
 360         head_engr = 0;
 361 }
 362
 363 void
 364 rest_engravings(int fd)
 365 {
 366         struct engr    *ep;
 367         unsigned        lth;
 368         head_engr = 0;
 369         while (1) {
 370                 mread(fd, &lth, sizeof(unsigned));
 371                 if (lth == 0)
 372                         return;
 373                 ep = alloc(sizeof(*ep) + lth);
 374                 mread(fd, ep, sizeof(*ep) + lth);
 375                 ep->nxt_engr = head_engr;
 376                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 377                 head_engr = ep;
 378         }
 379 }
 380
 381 static void
 382 del_engr(struct engr *ep)
 383 {
 384         struct engr    *ept;
 385         if (ep == head_engr)
 386                 head_engr = ep->nxt_engr;
 387         else {
 388                 for (ept = head_engr; ept; ept = ept->nxt_engr) {
 389                         if (ept->nxt_engr == ep) {
 390                                 ept->nxt_engr = ep->nxt_engr;
 391                                 goto fnd;
 392                         }
 393                 }
 394                 impossible("Error in del_engr?");
 395                 return;
 396 fnd:            ;
 397         }
 398         free(ep);
 399 }