NetBSD/games/hack/hack.worn.c

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/* $NetBSD: hack.worn.c,v 1.7 2009/08/12 07:28:41 dholland Exp $ */
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/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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#include <sys/cdefs.h>
#ifndef lint
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__RCSID("$NetBSD: hack.worn.c,v 1.7 2009/08/12 07:28:41 dholland Exp $");
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#endif /* not lint */
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#include "hack.h"
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#include "extern.h"
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static struct worn {
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long w_mask;
struct obj **w_obj;
} worn[] = {
{
W_ARM, &uarm
},
{
W_ARM2, &uarm2
},
{
W_ARMH, &uarmh
},
{
W_ARMS, &uarms
},
{
W_ARMG, &uarmg
},
{
W_RINGL, &uleft
},
{
W_RINGR, &uright
},
{
W_WEP, &uwep
},
{
W_BALL, &uball
},
{
W_CHAIN, &uchain
},
{
0, 0
}
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};
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void
setworn(struct obj *obj, long mask)
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{
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struct worn *wp;
struct obj *oobj;
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for (wp = worn; wp->w_mask; wp++)
if (wp->w_mask & mask) {
oobj = *(wp->w_obj);
if (oobj && !(oobj->owornmask & wp->w_mask))
impossible("Setworn: mask = %ld.", wp->w_mask);
if (oobj)
oobj->owornmask &= ~wp->w_mask;
if (obj && oobj && wp->w_mask == W_ARM) {
if (uarm2) {
impossible("Setworn: uarm2 set?");
} else
setworn(uarm, W_ARM2);
}
*(wp->w_obj) = obj;
if (obj)
obj->owornmask |= wp->w_mask;
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}
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if (uarm2 && !uarm) {
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uarm = uarm2;
uarm2 = 0;
uarm->owornmask ^= (W_ARM | W_ARM2);
}
}
/* called e.g. when obj is destroyed */
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void
setnotworn(struct obj *obj)
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{
struct worn *wp;
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for (wp = worn; wp->w_mask; wp++)
if (obj == *(wp->w_obj)) {
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*(wp->w_obj) = 0;
obj->owornmask &= ~wp->w_mask;
}
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if (uarm2 && !uarm) {
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uarm = uarm2;
uarm2 = 0;
uarm->owornmask ^= (W_ARM | W_ARM2);
}
}