games/hack/hack.steal.c

   1 /*      $NetBSD: hack.steal.c,v 1.6 2009/06/07 18:30:39 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.steal.c,v 1.6 2009/06/07 18:30:39 dholland Exp $");
  67 #endif                          /* not lint */
  68
  69 #include <stdlib.h>
  70 #include "hack.h"
  71 #include "extern.h"
  72
  73 static int stealarm(void);
  74
  75 /*
  76  * actually returns something that fits in an int
  77  */
  78 long
  79 somegold(void)
  80 {
  81         return ((u.ugold < 100) ? u.ugold :
  82                 (u.ugold > 10000) ? rnd(10000) : rnd((int) u.ugold));
  83 }
  84
  85 void
  86 stealgold(struct monst *mtmp)
  87 {
  88         struct gold    *gold = g_at(u.ux, u.uy);
  89         long            tmp;
  90         if (gold && (!u.ugold || gold->amount > u.ugold || !rn2(5))) {
  91                 mtmp->mgold += gold->amount;
  92                 freegold(gold);
  93                 if (Invisible)
  94                         newsym(u.ux, u.uy);
  95                 pline("%s quickly snatches some gold from between your feet!",
  96                       Monnam(mtmp));
  97                 if (!u.ugold || !rn2(5)) {
  98                         rloc(mtmp);
  99                         mtmp->mflee = 1;
 100                 }
 101         } else if (u.ugold) {
 102                 u.ugold -= (tmp = somegold());
 103                 pline("Your purse feels lighter.");
 104                 mtmp->mgold += tmp;
 105                 rloc(mtmp);
 106                 mtmp->mflee = 1;
 107                 flags.botl = 1;
 108         }
 109 }
 110
 111 /* steal armor after he finishes taking it off */
 112 static unsigned stealoid;       /* object to be stolen */
 113 static unsigned stealmid;       /* monster doing the stealing */
 114 static int
 115 stealarm(void)
 116 {
 117         struct monst   *mtmp;
 118         struct obj     *otmp;
 119
 120         for (otmp = invent; otmp; otmp = otmp->nobj)
 121                 if (otmp->o_id == stealoid) {
 122                         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
 123                                 if (mtmp->m_id == stealmid) {
 124                                         if (dist(mtmp->mx, mtmp->my) < 3) {
 125                                                 freeinv(otmp);
 126                                                 pline("%s steals %s!", Monnam(mtmp), doname(otmp));
 127                                                 mpickobj(mtmp, otmp);
 128                                                 mtmp->mflee = 1;
 129                                                 rloc(mtmp);
 130                                         }
 131                                         break;
 132                                 }
 133                         break;
 134                 }
 135         stealoid = 0;
 136         return 0;
 137 }
 138
 139 /* returns 1 when something was stolen */
 140 /* (or at least, when N should flee now) */
 141 /* avoid stealing the object stealoid */
 142 int
 143 steal(struct monst *mtmp)
 144 {
 145         struct obj     *otmp;
 146         int             tmp;
 147         int             named = 0;
 148
 149         if (!invent) {
 150                 if (Blind)
 151                         pline("Somebody tries to rob you, but finds nothing to steal.");
 152                 else
 153                         pline("%s tries to rob you, but she finds nothing to steal!",
 154                               Monnam(mtmp));
 155                 return (1);     /* let her flee */
 156         }
 157         tmp = 0;
 158         for (otmp = invent; otmp; otmp = otmp->nobj)
 159                 if (otmp != uarm2)
 160                         tmp += ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1);
 161         tmp = rn2(tmp);
 162         for (otmp = invent; otmp; otmp = otmp->nobj)
 163                 if (otmp != uarm2)
 164                         if ((tmp -= ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1))
 165                             < 0)
 166                                 break;
 167         if (!otmp) {
 168                 impossible("Steal fails!");
 169                 return (0);
 170         }
 171         if (otmp->o_id == stealoid)
 172                 return (0);
 173         if ((otmp->owornmask & (W_ARMOR | W_RING))) {
 174                 switch (otmp->olet) {
 175                 case RING_SYM:
 176                         ringoff(otmp);
 177                         break;
 178                 case ARMOR_SYM:
 179                         if (multi < 0 || otmp == uarms) {
 180                                 setworn((struct obj *) 0, otmp->owornmask & W_ARMOR);
 181                                 break;
 182                         } {
 183                                 int             curssv = otmp->cursed;
 184                                 otmp->cursed = 0;
 185                                 stop_occupation();
 186                                 pline("%s seduces you and %s off your %s.",
 187                                       Amonnam(mtmp, Blind ? "gentle" : "beautiful"),
 188                                       otmp->cursed ? "helps you to take"
 189                                       : "you start taking",
 190                                       (otmp == uarmg) ? "gloves" :
 191                                       (otmp == uarmh) ? "helmet" : "armor");
 192                                 named++;
 193                                 (void) armoroff(otmp);
 194                                 otmp->cursed = curssv;
 195                                 if (multi < 0) {
 196                                         /*
 197                                         multi = 0;
 198                                         nomovemsg = 0;
 199                                         afternmv = 0;
 200                                         */
 201                                         stealoid = otmp->o_id;
 202                                         stealmid = mtmp->m_id;
 203                                         afternmv = stealarm;
 204                                         return (0);
 205                                 }
 206                                 break;
 207                         }
 208                 default:
 209                         impossible("Tried to steal a strange worn thing.");
 210                 }
 211         } else if (otmp == uwep)
 212                 setuwep((struct obj *) 0);
 213         if (otmp->olet == CHAIN_SYM) {
 214                 impossible("How come you are carrying that chain?");
 215         }
 216         if (Punished && otmp == uball) {
 217                 Punished = 0;
 218                 freeobj(uchain);
 219                 free((char *) uchain);
 220                 uchain = (struct obj *) 0;
 221                 uball->spe = 0;
 222                 uball = (struct obj *) 0;       /* superfluous */
 223         }
 224         freeinv(otmp);
 225         pline("%s stole %s.", named ? "She" : Monnam(mtmp), doname(otmp));
 226         mpickobj(mtmp, otmp);
 227         return ((multi < 0) ? 0 : 1);
 228 }
 229
 230 void
 231 mpickobj(struct monst *mtmp, struct obj *otmp)
 232 {
 233         otmp->nobj = mtmp->minvent;
 234         mtmp->minvent = otmp;
 235 }
 236
 237 int
 238 stealamulet(struct monst *mtmp)
 239 {
 240         struct obj     *otmp;
 241
 242         for (otmp = invent; otmp; otmp = otmp->nobj) {
 243                 if (otmp->olet == AMULET_SYM) {
 244                         /* might be an imitation one */
 245                         if (otmp == uwep)
 246                                 setuwep((struct obj *) 0);
 247                         freeinv(otmp);
 248                         mpickobj(mtmp, otmp);
 249                         pline("%s stole %s!", Monnam(mtmp), doname(otmp));
 250                         return (1);
 251                 }
 252         }
 253         return (0);
 254 }
 255
 256 /* release the objects the killed animal has stolen */
 257 void
 258 relobj(struct monst *mtmp, int show)
 259 {
 260         struct obj     *otmp, *otmp2;
 261
 262         for (otmp = mtmp->minvent; otmp; otmp = otmp2) {
 263                 otmp->ox = mtmp->mx;
 264                 otmp->oy = mtmp->my;
 265                 otmp2 = otmp->nobj;
 266                 otmp->nobj = fobj;
 267                 fobj = otmp;
 268                 stackobj(fobj);
 269                 if (show & cansee(mtmp->mx, mtmp->my))
 270                         atl(otmp->ox, otmp->oy, otmp->olet);
 271         }
 272         mtmp->minvent = (struct obj *) 0;
 273         if (mtmp->mgold || mtmp->data->mlet == 'L') {
 274                 long            tmp;
 275
 276                 tmp = (mtmp->mgold > 10000) ? 10000 : mtmp->mgold;
 277                 mkgold((long) (tmp + d(dlevel, 30)), mtmp->mx, mtmp->my);
 278                 if (show & cansee(mtmp->mx, mtmp->my))
 279                         atl(mtmp->mx, mtmp->my, '$');
 280         }
 281 }