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 <sys/cdefs.h>
65 #ifndef lint
66 __RCSID("$NetBSD: hack.steal.c,v 1.8 2011/08/06 20:29:37 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
somegold(void)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
stealgold(struct monst * mtmp)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
stealarm(void)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
steal(struct monst * mtmp)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(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
mpickobj(struct monst * mtmp,struct obj * otmp)231 mpickobj(struct monst *mtmp, struct obj *otmp)
232 {
233 otmp->nobj = mtmp->minvent;
234 mtmp->minvent = otmp;
235 }
236
237 int
stealamulet(struct monst * mtmp)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
relobj(struct monst * mtmp,int show)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 }
282