hack/hack.engrave.c

   1 /*      $NetBSD: hack.engrave.c,v 1.6 2003/04/02 18:36:36 jsm 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 1.6 2003/04/02 18:36:36 jsm 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(x, y)
  89         xchar           x, y;
  90 {
  91         struct engr    *ep = head_engr;
  92         while (ep) {
  93                 if (x == ep->engr_x && y == ep->engr_y)
  94                         return (ep);
  95                 ep = ep->nxt_engr;
  96         }
  97         return ((struct engr *) 0);
  98 }
  99
 100 int
 101 sengr_at(s, x, y)
 102         const char     *s;
 103         xchar           x, y;
 104 {
 105         struct engr    *ep = engr_at(x, y);
 106         char           *t;
 107         int             n;
 108         if (ep && ep->engr_time <= moves) {
 109                 t = ep->engr_txt;
 110                 /*
 111                                 if(!strcmp(s,t)) return(1);
 112                 */
 113                 n = strlen(s);
 114                 while (*t) {
 115                         if (!strncmp(s, t, n))
 116                                 return (1);
 117                         t++;
 118                 }
 119         }
 120         return (0);
 121 }
 122
 123 void
 124 u_wipe_engr(cnt)
 125         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(x, y, cnt)
 133         xchar           x, y, cnt;
 134 {
 135         struct engr    *ep = engr_at(x, y);
 136         int             lth, pos;
 137         char            ch;
 138         if (ep) {
 139                 if ((ep->engr_type != DUST) || Levitation) {
 140                         cnt = rn2(1 + 50 / (cnt + 1)) ? 0 : 1;
 141                 }
 142                 lth = strlen(ep->engr_txt);
 143                 if (lth && cnt > 0) {
 144                         while (cnt--) {
 145                                 pos = rn2(lth);
 146                                 if ((ch = ep->engr_txt[pos]) == ' ')
 147                                         continue;
 148                                 ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
 149                         }
 150                 }
 151                 while (lth && ep->engr_txt[lth - 1] == ' ')
 152                         ep->engr_txt[--lth] = 0;
 153                 while (ep->engr_txt[0] == ' ')
 154                         ep->engr_txt++;
 155                 if (!ep->engr_txt[0])
 156                         del_engr(ep);
 157         }
 158 }
 159
 160 void
 161 read_engr_at(x, y)
 162         int             x, y;
 163 {
 164         struct engr    *ep = engr_at(x, y);
 165         if (ep && ep->engr_txt[0]) {
 166                 switch (ep->engr_type) {
 167                 case DUST:
 168                         pline("Something is written here in the dust.");
 169                         break;
 170                 case ENGRAVE:
 171                         pline("Something is engraved here on the floor.");
 172                         break;
 173                 case BURN:
 174                         pline("Some text has been burned here in the floor.");
 175                         break;
 176                 default:
 177                         impossible("Something is written in a very strange way.");
 178                 }
 179                 pline("You read: \"%s\".", ep->engr_txt);
 180         }
 181 }
 182
 183 void
 184 make_engr_at(x, y, s)
 185         int             x, y;
 186         const char     *s;
 187 {
 188         struct engr    *ep;
 189
 190         if ((ep = engr_at(x, y)) != NULL)
 191                 del_engr(ep);
 192         ep = (struct engr *)
 193                 alloc((unsigned) (sizeof(struct engr) + strlen(s) + 1));
 194         ep->nxt_engr = head_engr;
 195         head_engr = ep;
 196         ep->engr_x = x;
 197         ep->engr_y = y;
 198         ep->engr_txt = (char *) (ep + 1);
 199         (void) strcpy(ep->engr_txt, s);
 200         ep->engr_time = 0;
 201         ep->engr_type = DUST;
 202         ep->engr_lth = strlen(s) + 1;
 203 }
 204
 205 int
 206 doengrave()
 207 {
 208         int             len;
 209         char           *sp;
 210         struct engr    *ep, *oep = engr_at(u.ux, u.uy);
 211         char            buf[BUFSZ];
 212         xchar           type;
 213         int             spct;   /* number of leading spaces */
 214         struct obj     *otmp;
 215         multi = 0;
 216
 217         if (u.uswallow) {
 218                 pline("You're joking. Hahaha!");        /* riv05!a3 */
 219                 return (0);
 220         }
 221         /* one may write with finger, weapon or wand */
 222         otmp = getobj("#-)/", "write with");
 223         if (!otmp)
 224                 return (0);
 225
 226         if (otmp == &zeroobj)
 227                 otmp = 0;
 228         if (otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
 229                 type = BURN;
 230                 otmp->spe--;
 231         } else {
 232                 /* first wield otmp */
 233                 if (otmp != uwep) {
 234                         if (uwep && uwep->cursed) {
 235                                 /* Andreas Bormann */
 236                                 pline("Since your weapon is welded to your hand,");
 237                                 pline("you use the %s.", aobjnam(uwep, (char *) 0));
 238                                 otmp = uwep;
 239                         } else {
 240                                 if (!otmp)
 241                                         pline("You are now empty-handed.");
 242                                 else if (otmp->cursed)
 243                                         pline("The %s %s to your hand!",
 244                                               aobjnam(otmp, "weld"),
 245                                               (otmp->quan == 1) ? "itself" : "themselves");
 246                                 else
 247                                         pline("You now wield %s.", doname(otmp));
 248                                 setuwep(otmp);
 249                         }
 250                 }
 251                 if (!otmp)
 252                         type = DUST;
 253                 else if (otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
 254                          otmp->otyp == CRYSKNIFE ||
 255                          otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
 256                         type = ENGRAVE;
 257                         if ((int) otmp->spe <= -3) {
 258                                 type = DUST;
 259                                 pline("Your %s too dull for engraving.",
 260                                       aobjnam(otmp, "are"));
 261                                 if (oep && oep->engr_type != DUST)
 262                                         return (1);
 263                         }
 264                 } else
 265                         type = DUST;
 266         }
 267         if (Levitation && type != BURN) {       /* riv05!a3 */
 268                 pline("You can't reach the floor!");
 269                 return (1);
 270         }
 271         if (oep && oep->engr_type == DUST) {
 272                 pline("You wipe out the message that was written here.");
 273                 del_engr(oep);
 274                 oep = 0;
 275         }
 276         if (type == DUST && oep) {
 277                 pline("You cannot wipe out the message that is %s in the rock.",
 278                       (oep->engr_type == BURN) ? "burned" : "engraved");
 279                 return (1);
 280         }
 281         pline("What do you want to %s on the floor here? ",
 282          (type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
 283         getlin(buf);
 284         clrlin();
 285         spct = 0;
 286         sp = buf;
 287         while (*sp == ' ')
 288                 spct++, sp++;
 289         len = strlen(sp);
 290         if (!len || *buf == '\033') {
 291                 if (type == BURN)
 292                         otmp->spe++;
 293                 return (0);
 294         }
 295         switch (type) {
 296         case DUST:
 297         case BURN:
 298                 if (len > 15) {
 299                         multi = -(len / 10);
 300                         nomovemsg = "You finished writing.";
 301                 }
 302                 break;
 303         case ENGRAVE:           /* here otmp != 0 */
 304                 {
 305                         int             len2 = (otmp->spe + 3) * 2 + 1;
 306
 307                         pline("Your %s dull.", aobjnam(otmp, "get"));
 308                         if (len2 < len) {
 309                                 len = len2;
 310                                 sp[len] = 0;
 311                                 otmp->spe = -3;
 312                                 nomovemsg = "You cannot engrave more.";
 313                         } else {
 314                                 otmp->spe -= len / 2;
 315                                 nomovemsg = "You finished engraving.";
 316                         }
 317                         multi = -len;
 318                 }
 319                 break;
 320         }
 321         if (oep)
 322                 len += strlen(oep->engr_txt) + spct;
 323         ep = (struct engr *) alloc((unsigned) (sizeof(struct engr) + len + 1));
 324         ep->nxt_engr = head_engr;
 325         head_engr = ep;
 326         ep->engr_x = u.ux;
 327         ep->engr_y = u.uy;
 328         sp = (char *) (ep + 1); /* (char *)ep + sizeof(struct engr) */
 329         ep->engr_txt = sp;
 330         if (oep) {
 331                 (void) strcpy(sp, oep->engr_txt);
 332                 (void) strcat(sp, buf);
 333                 del_engr(oep);
 334         } else
 335                 (void) strcpy(sp, buf);
 336         ep->engr_lth = len + 1;
 337         ep->engr_type = type;
 338         ep->engr_time = moves - multi;
 339
 340         /* kludge to protect pline against excessively long texts */
 341         if (len > BUFSZ - 20)
 342                 sp[BUFSZ - 20] = 0;
 343
 344         return (1);
 345 }
 346
 347 void
 348 save_engravings(fd)
 349         int             fd;
 350 {
 351         struct engr    *ep = head_engr;
 352         while (ep) {
 353                 if (!ep->engr_lth || !ep->engr_txt[0]) {
 354                         ep = ep->nxt_engr;
 355                         continue;
 356                 }
 357                 bwrite(fd, (char *) &(ep->engr_lth), sizeof(ep->engr_lth));
 358                 bwrite(fd, (char *) ep, sizeof(struct engr) + ep->engr_lth);
 359                 ep = ep->nxt_engr;
 360         }
 361         bwrite(fd, (char *) nul, sizeof(unsigned));
 362         head_engr = 0;
 363 }
 364
 365 void
 366 rest_engravings(fd)
 367         int             fd;
 368 {
 369         struct engr    *ep;
 370         unsigned        lth;
 371         head_engr = 0;
 372         while (1) {
 373                 mread(fd, (char *) &lth, sizeof(unsigned));
 374                 if (lth == 0)
 375                         return;
 376                 ep = (struct engr *) alloc(sizeof(struct engr) + lth);
 377                 mread(fd, (char *) ep, sizeof(struct engr) + lth);
 378                 ep->nxt_engr = head_engr;
 379                 ep->engr_txt = (char *) (ep + 1);       /* Andreas Bormann */
 380                 head_engr = ep;
 381         }
 382 }
 383
 384 void
 385 del_engr(ep)
 386         struct engr    *ep;
 387 {
 388         struct engr    *ept;
 389         if (ep == head_engr)
 390                 head_engr = ep->nxt_engr;
 391         else {
 392                 for (ept = head_engr; ept; ept = ept->nxt_engr) {
 393                         if (ept->nxt_engr == ep) {
 394                                 ept->nxt_engr = ep->nxt_engr;
 395                                 goto fnd;
 396                         }
 397                 }
 398                 impossible("Error in del_engr?");
 399                 return;
 400 fnd:            ;
 401         }
 402         free((char *) ep);
 403 }