Home | History | Annotate | Line # | Download | only in hack 
      1 /*	$NetBSD: hack.worn.c,v 1.7 2009/08/12 07:28:41 dholland 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 (at) 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 1.7 2009/08/12 07:28:41 dholland Exp $");
     67 #endif				/* not lint */
     68 
     69 #include "hack.h"
     70 #include "extern.h"
     71 
     72 static 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 }
    158