1 /* $OpenBSD: hack.steal.c,v 1.5 2009/10/27 23:59:25 deraadt 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 67 extern void (*afternmv)(void); 68 69 /* actually returns something that fits in an int */ 70 long 71 somegold() 72 { 73 return( (u.ugold < 100) ? u.ugold : 74 (u.ugold > 10000) ? rnd(10000) : rnd((int) u.ugold) ); 75 } 76 77 void 78 stealgold(struct monst *mtmp) 79 { 80 struct gold *gold = g_at(u.ux, u.uy); 81 long tmp; 82 83 if(gold && ( !u.ugold || gold->amount > u.ugold || !rn2(5))) { 84 mtmp->mgold += gold->amount; 85 freegold(gold); 86 if(Invisible) newsym(u.ux, u.uy); 87 pline("%s quickly snatches some gold from between your feet!", 88 Monnam(mtmp)); 89 if(!u.ugold || !rn2(5)) { 90 rloc(mtmp); 91 mtmp->mflee = 1; 92 } 93 } else if(u.ugold) { 94 u.ugold -= (tmp = somegold()); 95 pline("Your purse feels lighter."); 96 mtmp->mgold += tmp; 97 rloc(mtmp); 98 mtmp->mflee = 1; 99 flags.botl = 1; 100 } 101 } 102 103 /* steal armor after he finishes taking it off */ 104 static unsigned stealoid; /* object to be stolen */ 105 static unsigned stealmid; /* monster doing the stealing */ 106 107 void 108 stealarm() 109 { 110 struct monst *mtmp; 111 struct obj *otmp; 112 113 for(otmp = invent; otmp; otmp = otmp->nobj) 114 if(otmp->o_id == stealoid) { 115 for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) 116 if(mtmp->m_id == stealmid) { 117 if(dist(mtmp->mx,mtmp->my) < 3) { 118 freeinv(otmp); 119 pline("%s steals %s!", Monnam(mtmp), doname(otmp)); 120 mpickobj(mtmp,otmp); 121 mtmp->mflee = 1; 122 rloc(mtmp); 123 } 124 break; 125 } 126 break; 127 } 128 stealoid = 0; 129 } 130 131 /* returns 1 when something was stolen */ 132 /* (or at least, when N should flee now) */ 133 /* avoid stealing the object stealoid */ 134 int 135 steal(struct monst *mtmp) 136 { 137 struct obj *otmp; 138 int tmp; 139 int named = 0; 140 141 if(!invent){ 142 if(Blind) 143 pline("Somebody tries to rob you, but finds nothing to steal."); 144 else 145 pline("%s tries to rob you, but she finds nothing to steal!", 146 Monnam(mtmp)); 147 return(1); /* let her flee */ 148 } 149 tmp = 0; 150 for(otmp = invent; otmp; otmp = otmp->nobj) if(otmp != uarm2) 151 tmp += ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1); 152 tmp = rn2(tmp); 153 for(otmp = invent; otmp; otmp = otmp->nobj) if(otmp != uarm2) 154 if((tmp -= ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1)) 155 < 0) break; 156 if(!otmp) { 157 impossible("Steal fails!"); 158 return(0); 159 } 160 if(otmp->o_id == stealoid) 161 return(0); 162 if((otmp->owornmask & (W_ARMOR | W_RING))){ 163 switch(otmp->olet) { 164 case RING_SYM: 165 ringoff(otmp); 166 break; 167 case ARMOR_SYM: 168 if(multi < 0 || otmp == uarms){ 169 setworn((struct obj *) 0, otmp->owornmask & W_ARMOR); 170 break; 171 } 172 { int curssv = otmp->cursed; 173 otmp->cursed = 0; 174 stop_occupation(); 175 pline("%s seduces you and %s off your %s.", 176 Amonnam(mtmp, Blind ? "gentle" : "beautiful"), 177 otmp->cursed ? "helps you to take" 178 : "you start taking", 179 (otmp == uarmg) ? "gloves" : 180 (otmp == uarmh) ? "helmet" : "armor"); 181 named++; 182 (void) armoroff(otmp); 183 otmp->cursed = curssv; 184 if(multi < 0){ 185 stealoid = otmp->o_id; 186 stealmid = mtmp->m_id; 187 afternmv = stealarm; 188 return(0); 189 } 190 break; 191 } 192 default: 193 impossible("Tried to steal a strange worn thing."); 194 } 195 } 196 else if(otmp == uwep) 197 setuwep((struct obj *) 0); 198 if(otmp->olet == CHAIN_SYM) { 199 impossible("How come you are carrying that chain?"); 200 } 201 if(Punished && otmp == uball){ 202 Punished = 0; 203 freeobj(uchain); 204 free((char *) uchain); 205 uchain = (struct obj *) 0; 206 uball->spe = 0; 207 uball = (struct obj *) 0; /* superfluous */ 208 } 209 freeinv(otmp); 210 pline("%s stole %s.", named ? "She" : Monnam(mtmp), doname(otmp)); 211 mpickobj(mtmp,otmp); 212 return((multi < 0) ? 0 : 1); 213 } 214 215 void 216 mpickobj(struct monst *mtmp, struct obj *otmp) 217 { 218 otmp->nobj = mtmp->minvent; 219 mtmp->minvent = otmp; 220 } 221 222 int 223 stealamulet(struct monst *mtmp) 224 { 225 struct obj *otmp; 226 227 for(otmp = invent; otmp; otmp = otmp->nobj) { 228 if(otmp->olet == AMULET_SYM) { 229 /* might be an imitation one */ 230 if(otmp == uwep) setuwep((struct obj *) 0); 231 freeinv(otmp); 232 mpickobj(mtmp,otmp); 233 pline("%s stole %s!", Monnam(mtmp), doname(otmp)); 234 return(1); 235 } 236 } 237 return(0); 238 } 239 240 /* release the objects the killed animal has stolen */ 241 void 242 relobj(struct monst *mtmp, int show) 243 { 244 struct obj *otmp, *otmp2; 245 246 for(otmp = mtmp->minvent; otmp; otmp = otmp2){ 247 otmp->ox = mtmp->mx; 248 otmp->oy = mtmp->my; 249 otmp2 = otmp->nobj; 250 otmp->nobj = fobj; 251 fobj = otmp; 252 stackobj(fobj); 253 if(show & cansee(mtmp->mx,mtmp->my)) 254 atl(otmp->ox,otmp->oy,otmp->olet); 255 } 256 mtmp->minvent = (struct obj *) 0; 257 if(mtmp->mgold || mtmp->data->mlet == 'L') { 258 long tmp; 259 260 tmp = (mtmp->mgold > 10000) ? 10000 : mtmp->mgold; 261 mkgold((long)(tmp + d(dlevel,30)), mtmp->mx, mtmp->my); 262 if(show & cansee(mtmp->mx,mtmp->my)) 263 atl(mtmp->mx,mtmp->my,'$'); 264 } 265 } 266