games/hack/hack.steal.c

   1 /*      $NetBSD: hack.steal.c,v 1.8 2011/08/06 20:29:37 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 static int stealarm(void);
  69
  70 /*
  71  * actually returns something that fits in an int
  72  */
  73 long
  74 somegold(void)
  75 {
  76         return ((u.ugold < 100) ? u.ugold :
  77                 (u.ugold > 10000) ? rnd(10000) : rnd((int) u.ugold));
  78 }
  79
  80 void
  81 stealgold(struct monst *mtmp)
  82 {
  83         struct gold    *gold = g_at(u.ux, u.uy);
  84         long            tmp;
  85         if (gold && (!u.ugold || gold->amount > u.ugold || !rn2(5))) {
  86                 mtmp->mgold += gold->amount;
  87                 freegold(gold);
  88                 if (Invisible)
  89                         newsym(u.ux, u.uy);
  90                 pline("%s quickly snatches some gold from between your feet!",
  91                       Monnam(mtmp));
  92                 if (!u.ugold || !rn2(5)) {
  93                         rloc(mtmp);
  94                         mtmp->mflee = 1;
  95                 }
  96         } else if (u.ugold) {
  97                 u.ugold -= (tmp = somegold());
  98                 pline("Your purse feels lighter.");
  99                 mtmp->mgold += tmp;
 100                 rloc(mtmp);
 101                 mtmp->mflee = 1;
 102                 flags.botl = 1;
 103         }
 104 }
 105
 106 /* steal armor after he finishes taking it off */
 107 static unsigned stealoid;       /* object to be stolen */
 108 static unsigned stealmid;       /* monster doing the stealing */
 109 static int
 110 stealarm(void)
 111 {
 112         struct monst   *mtmp;
 113         struct obj     *otmp;
 114
 115         for (otmp = invent; otmp; otmp = otmp->nobj)
 116                 if (otmp->o_id == stealoid) {
 117                         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
 118                                 if (mtmp->m_id == stealmid) {
 119                                         if (dist(mtmp->mx, mtmp->my) < 3) {
 120                                                 freeinv(otmp);
 121                                                 pline("%s steals %s!", Monnam(mtmp), doname(otmp));
 122                                                 mpickobj(mtmp, otmp);
 123                                                 mtmp->mflee = 1;
 124                                                 rloc(mtmp);
 125                                         }
 126                                         break;
 127                                 }
 128                         break;
 129                 }
 130         stealoid = 0;
 131         return 0;
 132 }
 133
 134 /* returns 1 when something was stolen */
 135 /* (or at least, when N should flee now) */
 136 /* avoid stealing the object stealoid */
 137 int
 138 steal(struct monst *mtmp)
 139 {
 140         struct obj     *otmp;
 141         int             tmp;
 142         int             named = 0;
 143
 144         if (!invent) {
 145                 if (Blind)
 146                         pline("Somebody tries to rob you, but finds nothing to steal.");
 147                 else
 148                         pline("%s tries to rob you, but she finds nothing to steal!",
 149                               Monnam(mtmp));
 150                 return (1);     /* let her flee */
 151         }
 152         tmp = 0;
 153         for (otmp = invent; otmp; otmp = otmp->nobj)
 154                 if (otmp != uarm2)
 155                         tmp += ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1);
 156         tmp = rn2(tmp);
 157         for (otmp = invent; otmp; otmp = otmp->nobj)
 158                 if (otmp != uarm2)
 159                         if ((tmp -= ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1))
 160                             < 0)
 161                                 break;
 162         if (!otmp) {
 163                 impossible("Steal fails!");
 164                 return (0);
 165         }
 166         if (otmp->o_id == stealoid)
 167                 return (0);
 168         if ((otmp->owornmask & (W_ARMOR | W_RING))) {
 169                 switch (otmp->olet) {
 170                 case RING_SYM:
 171                         ringoff(otmp);
 172                         break;
 173                 case ARMOR_SYM:
 174                         if (multi < 0 || otmp == uarms) {
 175                                 setworn((struct obj *) 0, otmp->owornmask & W_ARMOR);
 176                                 break;
 177                         } {
 178                                 int             curssv = otmp->cursed;
 179                                 otmp->cursed = 0;
 180                                 stop_occupation();
 181                                 pline("%s seduces you and %s off your %s.",
 182                                       Amonnam(mtmp, Blind ? "gentle" : "beautiful"),
 183                                       otmp->cursed ? "helps you to take"
 184                                       : "you start taking",
 185                                       (otmp == uarmg) ? "gloves" :
 186                                       (otmp == uarmh) ? "helmet" : "armor");
 187                                 named++;
 188                                 (void) armoroff(otmp);
 189                                 otmp->cursed = curssv;
 190                                 if (multi < 0) {
 191                                         /*
 192                                         multi = 0;
 193                                         nomovemsg = 0;
 194                                         afternmv = 0;
 195                                         */
 196                                         stealoid = otmp->o_id;
 197                                         stealmid = mtmp->m_id;
 198                                         afternmv = stealarm;
 199                                         return (0);
 200                                 }
 201                                 break;
 202                         }
 203                 default:
 204                         impossible("Tried to steal a strange worn thing.");
 205                 }
 206         } else if (otmp == uwep)
 207                 setuwep((struct obj *) 0);
 208         if (otmp->olet == CHAIN_SYM) {
 209                 impossible("How come you are carrying that chain?");
 210         }
 211         if (Punished && otmp == uball) {
 212                 Punished = 0;
 213                 freeobj(uchain);
 214                 free(uchain);
 215                 uchain = (struct obj *) 0;
 216                 uball->spe = 0;
 217                 uball = (struct obj *) 0;       /* superfluous */
 218         }
 219         freeinv(otmp);
 220         pline("%s stole %s.", named ? "She" : Monnam(mtmp), doname(otmp));
 221         mpickobj(mtmp, otmp);
 222         return ((multi < 0) ? 0 : 1);
 223 }
 224
 225 void
 226 mpickobj(struct monst *mtmp, struct obj *otmp)
 227 {
 228         otmp->nobj = mtmp->minvent;
 229         mtmp->minvent = otmp;
 230 }
 231
 232 int
 233 stealamulet(struct monst *mtmp)
 234 {
 235         struct obj     *otmp;
 236
 237         for (otmp = invent; otmp; otmp = otmp->nobj) {
 238                 if (otmp->olet == AMULET_SYM) {
 239                         /* might be an imitation one */
 240                         if (otmp == uwep)
 241                                 setuwep((struct obj *) 0);
 242                         freeinv(otmp);
 243                         mpickobj(mtmp, otmp);
 244                         pline("%s stole %s!", Monnam(mtmp), doname(otmp));
 245                         return (1);
 246                 }
 247         }
 248         return (0);
 249 }
 250
 251 /* release the objects the killed animal has stolen */
 252 void
 253 relobj(struct monst *mtmp, int show)
 254 {
 255         struct obj     *otmp, *otmp2;
 256
 257         for (otmp = mtmp->minvent; otmp; otmp = otmp2) {
 258                 otmp->ox = mtmp->mx;
 259                 otmp->oy = mtmp->my;
 260                 otmp2 = otmp->nobj;
 261                 otmp->nobj = fobj;
 262                 fobj = otmp;
 263                 stackobj(fobj);
 264                 if (show & cansee(mtmp->mx, mtmp->my))
 265                         atl(otmp->ox, otmp->oy, otmp->olet);
 266         }
 267         mtmp->minvent = (struct obj *) 0;
 268         if (mtmp->mgold || mtmp->data->mlet == 'L') {
 269                 long            tmp;
 270
 271                 tmp = (mtmp->mgold > 10000) ? 10000 : mtmp->mgold;
 272                 mkgold((long) (tmp + d(dlevel, 30)), mtmp->mx, mtmp->my);
 273                 if (show & cansee(mtmp->mx, mtmp->my))
 274                         atl(mtmp->mx, mtmp->my, '$');
 275         }
 276 }