Merge from vendor branch BIND:
[games.git] / games / hack / hack.worn.c
1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
2 /* hack.worn.c - version 1.0.2 */
3 /* $FreeBSD: src/games/hack/hack.worn.c,v 1.3 1999/11/16 02:57:14 billf Exp $ */
4 /* $DragonFly: src/games/hack/hack.worn.c,v 1.2 2003/06/17 04:25:24 dillon Exp $ */
5
6 #include "hack.h"
7
8 struct worn {
9         long w_mask;
10         struct obj **w_obj;
11 } worn[] = {
12         { W_ARM, &uarm },
13         { W_ARM2, &uarm2 },
14         { W_ARMH, &uarmh },
15         { W_ARMS, &uarms },
16         { W_ARMG, &uarmg },
17         { W_RINGL, &uleft },
18         { W_RINGR, &uright },
19         { W_WEP, &uwep },
20         { W_BALL, &uball },
21         { W_CHAIN, &uchain },
22         { 0, 0 }
23 };
24
25 setworn(obj, mask)
26 struct obj *obj;
27 long mask;
28 {
29         struct worn *wp;
30         struct obj *oobj;
31
32         for(wp = worn; wp->w_mask; wp++) if(wp->w_mask & mask) {
33                 oobj = *(wp->w_obj);
34                 if(oobj && !(oobj->owornmask & wp->w_mask))
35                         impossible("Setworn: mask = %ld.", wp->w_mask);
36                 if(oobj) oobj->owornmask &= ~wp->w_mask;
37                 if(obj && oobj && wp->w_mask == W_ARM){
38                         if(uarm2) {
39                                 impossible("Setworn: uarm2 set?");
40                         } else
41                                 setworn(uarm, W_ARM2);
42                 }
43                 *(wp->w_obj) = obj;
44                 if(obj) obj->owornmask |= wp->w_mask;
45         }
46         if(uarm2 && !uarm) {
47                 uarm = uarm2;
48                 uarm2 = 0;
49                 uarm->owornmask ^= (W_ARM | W_ARM2);
50         }
51 }
52
53 /* called e.g. when obj is destroyed */
54 setnotworn(obj) struct obj *obj; {
55         struct worn *wp;
56
57         for(wp = worn; wp->w_mask; wp++)
58                 if(obj == *(wp->w_obj)) {
59                         *(wp->w_obj) = 0;
60                         obj->owornmask &= ~wp->w_mask;
61                 }
62         if(uarm2 && !uarm) {
63                 uarm = uarm2;
64                 uarm2 = 0;
65                 uarm->owornmask ^= (W_ARM | W_ARM2);
66         }
67 }