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 1.3 2006/08/21 19:45:32 pavalos 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 void
  26 setworn(struct obj *obj, long mask)
  27 {
  28         struct worn *wp;
  29         struct obj *oobj;
  30
  31         for (wp = worn; wp->w_mask; wp++)
  32                 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)
  37                                 oobj->owornmask &= ~wp->w_mask;
  38                         if (obj && oobj && wp->w_mask == W_ARM) {
  39                                 if (uarm2)
  40                                         impossible("Setworn: uarm2 set?");
  41                                 else
  42                                         setworn(uarm, W_ARM2);
  43                         }
  44                         *(wp->w_obj) = obj;
  45                         if (obj)
  46                                 obj->owornmask |= wp->w_mask;
  47                 }
  48         if (uarm2 && !uarm) {
  49                 uarm = uarm2;
  50                 uarm2 = 0;
  51                 uarm->owornmask ^= (W_ARM | W_ARM2);
  52         }
  53 }
  54
  55 /* called e.g. when obj is destroyed */
  56 void
  57 setnotworn(struct obj *obj)
  58 {
  59         struct worn *wp;
  60
  61         for (wp = worn; wp->w_mask; wp++)
  62                 if (obj == *(wp->w_obj)) {
  63                         *(wp->w_obj) = 0;
  64                         obj->owornmask &= ~wp->w_mask;
  65                 }
  66         if (uarm2 && !uarm) {
  67                 uarm = uarm2;
  68                 uarm2 = 0;
  69                 uarm->owornmask ^= (W_ARM | W_ARM2);
  70         }
  71 }