/*      $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 <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.
 */

#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);
}