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