1 /* $OpenBSD: hack.steal.c,v 1.7 2016/01/09 18:33:15 mestre 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
66 #include "hack.h"
67
68 extern void (*afternmv)(void);
69
70 /* actually returns something that fits in an int */
71 long
somegold(void)72 somegold(void)
73 {
74 return( (u.ugold < 100) ? u.ugold :
75 (u.ugold > 10000) ? rnd(10000) : rnd((int) u.ugold) );
76 }
77
78 void
stealgold(struct monst * mtmp)79 stealgold(struct monst *mtmp)
80 {
81 struct gold *gold = g_at(u.ux, u.uy);
82 long tmp;
83
84 if(gold && ( !u.ugold || gold->amount > u.ugold || !rn2(5))) {
85 mtmp->mgold += gold->amount;
86 freegold(gold);
87 if(Invisible) newsym(u.ux, u.uy);
88 pline("%s quickly snatches some gold from between your feet!",
89 Monnam(mtmp));
90 if(!u.ugold || !rn2(5)) {
91 rloc(mtmp);
92 mtmp->mflee = 1;
93 }
94 } else if(u.ugold) {
95 u.ugold -= (tmp = somegold());
96 pline("Your purse feels lighter.");
97 mtmp->mgold += tmp;
98 rloc(mtmp);
99 mtmp->mflee = 1;
100 flags.botl = 1;
101 }
102 }
103
104 /* steal armor after he finishes taking it off */
105 static unsigned stealoid; /* object to be stolen */
106 static unsigned stealmid; /* monster doing the stealing */
107
108 void
stealarm(void)109 stealarm(void)
110 {
111 struct monst *mtmp;
112 struct obj *otmp;
113
114 for(otmp = invent; otmp; otmp = otmp->nobj)
115 if(otmp->o_id == stealoid) {
116 for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
117 if(mtmp->m_id == stealmid) {
118 if(dist(mtmp->mx,mtmp->my) < 3) {
119 freeinv(otmp);
120 pline("%s steals %s!", Monnam(mtmp), doname(otmp));
121 mpickobj(mtmp,otmp);
122 mtmp->mflee = 1;
123 rloc(mtmp);
124 }
125 break;
126 }
127 break;
128 }
129 stealoid = 0;
130 }
131
132 /* returns 1 when something was stolen */
133 /* (or at least, when N should flee now) */
134 /* avoid stealing the object stealoid */
135 int
steal(struct monst * mtmp)136 steal(struct monst *mtmp)
137 {
138 struct obj *otmp;
139 int tmp;
140 int named = 0;
141
142 if(!invent){
143 if(Blind)
144 pline("Somebody tries to rob you, but finds nothing to steal.");
145 else
146 pline("%s tries to rob you, but she finds nothing to steal!",
147 Monnam(mtmp));
148 return(1); /* let her flee */
149 }
150 tmp = 0;
151 for(otmp = invent; otmp; otmp = otmp->nobj) if(otmp != uarm2)
152 tmp += ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1);
153 tmp = rn2(tmp);
154 for(otmp = invent; otmp; otmp = otmp->nobj) if(otmp != uarm2)
155 if((tmp -= ((otmp->owornmask & (W_ARMOR | W_RING)) ? 5 : 1))
156 < 0) break;
157 if(!otmp) {
158 impossible("Steal fails!");
159 return(0);
160 }
161 if(otmp->o_id == stealoid)
162 return(0);
163 if((otmp->owornmask & (W_ARMOR | W_RING))){
164 switch(otmp->olet) {
165 case RING_SYM:
166 ringoff(otmp);
167 break;
168 case ARMOR_SYM:
169 if(multi < 0 || otmp == uarms){
170 setworn((struct obj *) 0, otmp->owornmask & W_ARMOR);
171 break;
172 }
173 { int curssv = otmp->cursed;
174 otmp->cursed = 0;
175 stop_occupation();
176 pline("%s seduces you and %s off your %s.",
177 Amonnam(mtmp, Blind ? "gentle" : "beautiful"),
178 otmp->cursed ? "helps you to take"
179 : "you start taking",
180 (otmp == uarmg) ? "gloves" :
181 (otmp == uarmh) ? "helmet" : "armor");
182 named++;
183 (void) armoroff(otmp);
184 otmp->cursed = curssv;
185 if(multi < 0){
186 stealoid = otmp->o_id;
187 stealmid = mtmp->m_id;
188 afternmv = stealarm;
189 return(0);
190 }
191 break;
192 }
193 default:
194 impossible("Tried to steal a strange worn thing.");
195 }
196 }
197 else if(otmp == uwep)
198 setuwep((struct obj *) 0);
199 if(otmp->olet == CHAIN_SYM) {
200 impossible("How come you are carrying that chain?");
201 }
202 if(Punished && otmp == uball){
203 Punished = 0;
204 freeobj(uchain);
205 free(uchain);
206 uchain = (struct obj *) 0;
207 uball->spe = 0;
208 uball = (struct obj *) 0; /* superfluous */
209 }
210 freeinv(otmp);
211 pline("%s stole %s.", named ? "She" : Monnam(mtmp), doname(otmp));
212 mpickobj(mtmp,otmp);
213 return((multi < 0) ? 0 : 1);
214 }
215
216 void
mpickobj(struct monst * mtmp,struct obj * otmp)217 mpickobj(struct monst *mtmp, struct obj *otmp)
218 {
219 otmp->nobj = mtmp->minvent;
220 mtmp->minvent = otmp;
221 }
222
223 int
stealamulet(struct monst * mtmp)224 stealamulet(struct monst *mtmp)
225 {
226 struct obj *otmp;
227
228 for(otmp = invent; otmp; otmp = otmp->nobj) {
229 if(otmp->olet == AMULET_SYM) {
230 /* might be an imitation one */
231 if(otmp == uwep) setuwep((struct obj *) 0);
232 freeinv(otmp);
233 mpickobj(mtmp,otmp);
234 pline("%s stole %s!", Monnam(mtmp), doname(otmp));
235 return(1);
236 }
237 }
238 return(0);
239 }
240
241 /* release the objects the killed animal has stolen */
242 void
relobj(struct monst * mtmp,int show)243 relobj(struct monst *mtmp, int show)
244 {
245 struct obj *otmp, *otmp2;
246
247 for(otmp = mtmp->minvent; otmp; otmp = otmp2){
248 otmp->ox = mtmp->mx;
249 otmp->oy = mtmp->my;
250 otmp2 = otmp->nobj;
251 otmp->nobj = fobj;
252 fobj = otmp;
253 stackobj(fobj);
254 if(show & cansee(mtmp->mx,mtmp->my))
255 atl(otmp->ox,otmp->oy,otmp->olet);
256 }
257 mtmp->minvent = (struct obj *) 0;
258 if(mtmp->mgold || mtmp->data->mlet == 'L') {
259 long tmp;
260
261 tmp = (mtmp->mgold > 10000) ? 10000 : mtmp->mgold;
262 mkgold((long)(tmp + d(dlevel,30)), mtmp->mx, mtmp->my);
263 if(show & cansee(mtmp->mx,mtmp->my))
264 atl(mtmp->mx,mtmp->my,'$');
265 }
266 }
267