games/hack/hack.worn.c

   1 /*      $NetBSD: hack.worn.c,v 1.5 2003/04/02 18:36:42 jsm 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.worn.c,v 1.5 2003/04/02 18:36:42 jsm Exp $");
  67 #endif                          /* not lint */
  68
  69 #include "hack.h"
  70 #include "extern.h"
  71
  72 struct worn {
  73         long            w_mask;
  74         struct obj    **w_obj;
  75 }               worn[] = {
  76         {
  77                 W_ARM, &uarm
  78         },
  79         {
  80                 W_ARM2, &uarm2
  81         },
  82         {
  83                 W_ARMH, &uarmh
  84         },
  85         {
  86                 W_ARMS, &uarms
  87         },
  88         {
  89                 W_ARMG, &uarmg
  90         },
  91         {
  92                 W_RINGL, &uleft
  93         },
  94         {
  95                 W_RINGR, &uright
  96         },
  97         {
  98                 W_WEP, &uwep
  99         },
 100         {
 101                 W_BALL, &uball
 102         },
 103         {
 104                 W_CHAIN, &uchain
 105         },
 106         {
 107                 0, 0
 108         }
 109 };
 110
 111 void
 112 setworn(struct obj *obj, long mask)
 113 {
 114         struct worn    *wp;
 115         struct obj     *oobj;
 116
 117         for (wp = worn; wp->w_mask; wp++)
 118                 if (wp->w_mask & mask) {
 119                         oobj = *(wp->w_obj);
 120                         if (oobj && !(oobj->owornmask & wp->w_mask))
 121                                 impossible("Setworn: mask = %ld.", wp->w_mask);
 122                         if (oobj)
 123                                 oobj->owornmask &= ~wp->w_mask;
 124                         if (obj && oobj && wp->w_mask == W_ARM) {
 125                                 if (uarm2) {
 126                                         impossible("Setworn: uarm2 set?");
 127                                 } else
 128                                         setworn(uarm, W_ARM2);
 129                         }
 130                         *(wp->w_obj) = obj;
 131                         if (obj)
 132                                 obj->owornmask |= wp->w_mask;
 133                 }
 134         if (uarm2 && !uarm) {
 135                 uarm = uarm2;
 136                 uarm2 = 0;
 137                 uarm->owornmask ^= (W_ARM | W_ARM2);
 138         }
 139 }
 140
 141 /* called e.g. when obj is destroyed */
 142 void
 143 setnotworn(struct obj *obj)
 144 {
 145         struct worn    *wp;
 146
 147         for (wp = worn; wp->w_mask; wp++)
 148                 if (obj == *(wp->w_obj)) {
 149                         *(wp->w_obj) = 0;
 150                         obj->owornmask &= ~wp->w_mask;
 151                 }
 152         if (uarm2 && !uarm) {
 153                 uarm = uarm2;
 154                 uarm2 = 0;
 155                 uarm->owornmask ^= (W_ARM | W_ARM2);
 156         }
 157 }