/*      $NetBSD: hack.wield.c,v 1.8 2011/07/02 02:09:08 mrg Exp $       */

/*
* 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 <[email protected]>
* 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.
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.wield.c,v 1.8 2011/07/02 02:09:08 mrg Exp $");
#endif                          /* not lint */

#include "hack.h"
#include "extern.h"

void
setuwep(struct obj *obj)
{
       setworn(obj, W_WEP);
}

int
dowield(void)
{
       struct obj     *wep;
       int             res = 0;

       multi = 0;
       if (!(wep = getobj("#-)", "wield")))    /* nothing */
               ;
       else if (uwep == wep)
               pline("You are already wielding that!");
       else if (uwep && uwep->cursed)
               pline("The %s welded to your hand!",
                     aobjnam(uwep, "are"));
       else if (wep == &zeroobj) {
               if (uwep == 0) {
                       pline("You are already empty handed.");
               } else {
                       setuwep((struct obj *) 0);
                       res++;
                       pline("You are empty handed.");
               }
       } else if (uarms && wep->otyp == TWO_HANDED_SWORD)
               pline("You cannot wield a two-handed sword and wear a shield.");
       else if (wep->owornmask & (W_ARMOR | W_RING))
               pline("You cannot wield that!");
       else {
               setuwep(wep);
               res++;
               if (uwep->cursed)
                       pline("The %s %s to your hand!",
                             aobjnam(uwep, "weld"),
                             (uwep->quan == 1) ? "itself" : "themselves");     /* a3 */
               else
                       prinv(uwep);
       }
       return (res);
}

void
corrode_weapon(void)
{
       if (!uwep || uwep->olet != WEAPON_SYM)
               return;         /* %% */
       if (uwep->rustfree)
               pline("Your %s not affected.", aobjnam(uwep, "are"));
       else {
               pline("Your %s!", aobjnam(uwep, "corrode"));
               uwep->spe--;
       }
}

int
chwepon(struct obj *otmp, int amount)
{
       const char *color = (amount < 0) ? "black" : "green";
       const char *stime;
       if (!uwep || uwep->olet != WEAPON_SYM) {
               strange_feeling(otmp,
                               (amount > 0) ? "Your hands twitch."
                               : "Your hands itch.");
               return (0);
       }
       if (uwep->otyp == WORM_TOOTH && amount > 0) {
               uwep->otyp = CRYSKNIFE;
               pline("Your weapon seems sharper now.");
               uwep->cursed = 0;
               return (1);
       }
       if (uwep->otyp == CRYSKNIFE && amount < 0) {
               uwep->otyp = WORM_TOOTH;
               pline("Your weapon looks duller now.");
               return (1);
       }
       /* there is a (soft) upper limit to uwep->spe */
       if (amount > 0 && uwep->spe > 5 && rn2(3)) {
               pline("Your %s violently green for a while and then evaporate%s.",
                     aobjnam(uwep, "glow"), plur(uwep->quan));
               while (uwep)    /* let all of them disappear */
                       /* note: uwep->quan = 1 is nogood if unpaid */
                       useup(uwep);
               return (1);
       }
       if (!rn2(6))
               amount *= 2;
       stime = (amount * amount == 1) ? "moment" : "while";
       pline("Your %s %s for a %s.",
             aobjnam(uwep, "glow"), color, stime);
       uwep->spe += amount;
       if (amount > 0)
               uwep->cursed = 0;
       return (1);
}