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 }