/*      $NetBSD: ring.c,v 1.9 2008/01/14 03:50:02 dholland Exp $        */

/*
 * Copyright (c) 1988, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Timothy C. Stoehr.
 *
 * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)ring.c      8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: ring.c,v 1.9 2008/01/14 03:50:02 dholland Exp $");
#endif
#endif /* not lint */

/*
 * ring.c
 *
 * This source herein may be modified and/or distributed by anybody who
 * so desires, with the following restrictions:
 *    1.)  No portion of this notice shall be removed.
 *    2.)  Credit shall not be taken for the creation of this source.
 *    3.)  This code is not to be traded, sold, or used for personal
 *         gain or profit.
 *
 */

#include "rogue.h"

static const char left_or_right[] = "left or right hand?";
static const char no_ring[] = "there's no ring on that hand";

short stealthy;
short r_rings;
short add_strength;
short e_rings;
short regeneration;
short ring_exp;
short auto_search;
boolean r_teleport;
boolean r_see_invisible;
boolean sustain_strength;
boolean maintain_armor;

void
put_on_ring(void)
{
        short ch;
        char desc[DCOLS];
        object *ring;

        if (r_rings == 2) {
                messagef(0, "wearing two rings already");
                return;
        }
        if ((ch = pack_letter("put on what?", RING)) == CANCEL) {
                return;
        }
        if (!(ring = get_letter_object(ch))) {
                messagef(0, "no such item.");
                return;
        }
        if (!(ring->what_is & RING)) {
                messagef(0, "that's not a ring");
                return;
        }
        if (ring->in_use_flags & (ON_LEFT_HAND | ON_RIGHT_HAND)) {
                messagef(0, "that ring is already being worn");
                return;
        }
        if (r_rings == 1) {
                ch = (rogue.left_ring ? 'r' : 'l');
        } else {
                messagef(0, "%s", left_or_right);
                do {
                        ch = rgetchar();
                } while ((ch != CANCEL) && (ch != 'l') && (ch != 'r') && (ch != '\n') &&
                                (ch != '\r'));
        }
        if ((ch != 'l') && (ch != 'r')) {
                check_message();
                return;
        }
        if (((ch == 'l') && rogue.left_ring)||((ch == 'r') && rogue.right_ring)) {
                check_message();
                messagef(0, "there's already a ring on that hand");
                return;
        }
        if (ch == 'l') {
                do_put_on(ring, 1);
        } else {
                do_put_on(ring, 0);
        }
        ring_stats(1);
        check_message();
        get_desc(ring, desc, sizeof(desc));
        messagef(0, "%s", desc);
        (void)reg_move();
}

/*
 * Do not call ring_stats() from within do_put_on().  It will cause
 * serious problems when do_put_on() is called from read_pack() in restore().
 */

void
do_put_on(object *ring, boolean on_left)
{
        if (on_left) {
                ring->in_use_flags |= ON_LEFT_HAND;
                rogue.left_ring = ring;
        } else {
                ring->in_use_flags |= ON_RIGHT_HAND;
                rogue.right_ring = ring;
        }
}

void
remove_ring(void)
{
        boolean left = 0, right = 0;
        short ch;
        char buf[DCOLS];
        object *ring;

        ring = NULL;
        if (r_rings == 0) {
                inv_rings();
        } else if (rogue.left_ring && !rogue.right_ring) {
                left = 1;
        } else if (!rogue.left_ring && rogue.right_ring) {
                right = 1;
        } else {
                messagef(0, "%s", left_or_right);
                do {
                        ch = rgetchar();
                } while ((ch != CANCEL) && (ch != 'l') && (ch != 'r') &&
                        (ch != '\n') && (ch != '\r'));
                left = (ch == 'l');
                right = (ch == 'r');
                check_message();
        }
        if (left || right) {
                if (left) {
                        if (rogue.left_ring) {
                                ring = rogue.left_ring;
                        } else {
                                messagef(0, "%s", no_ring);
                        }
                } else {
                        if (rogue.right_ring) {
                                ring = rogue.right_ring;
                        } else {
                                messagef(0, "%s", no_ring);
                        }
                }
                if (ring->is_cursed) {
                        messagef(0, "%s", curse_message);
                } else {
                        un_put_on(ring);
                        get_desc(ring, buf, sizeof(buf));
                        messagef(0, "removed %s", buf);
                        (void)reg_move();
                }
        }
}

void
un_put_on(object *ring)
{
        if (ring && (ring->in_use_flags & ON_LEFT_HAND)) {
                ring->in_use_flags &= (~ON_LEFT_HAND);
                rogue.left_ring = NULL;
        } else if (ring && (ring->in_use_flags & ON_RIGHT_HAND)) {
                ring->in_use_flags &= (~ON_RIGHT_HAND);
                rogue.right_ring = NULL;
        }
        ring_stats(1);
}

void
gr_ring(object *ring, boolean assign_wk)
{
        ring->what_is = RING;
        if (assign_wk) {
                ring->which_kind = get_rand(0, (RINGS - 1));
        }
        ring->class = 0;

        switch(ring->which_kind) {
        /*
        case STEALTH:
                break;
        case SLOW_DIGEST:
                break;
        case REGENERATION:
                break;
        case R_SEE_INVISIBLE:
                break;
        case SUSTAIN_STRENGTH:
                break;
        case R_MAINTAIN_ARMOR:
                break;
        case SEARCHING:
                break;
        */
        case R_TELEPORT:
                ring->is_cursed = 1;
                break;
        case ADD_STRENGTH:
        case DEXTERITY:
                while ((ring->class = (get_rand(0, 4) - 2)) == 0)
                        ;
                ring->is_cursed = (ring->class < 0);
                break;
        case ADORNMENT:
                ring->is_cursed = coin_toss();
                break;
        }
}

void
inv_rings(void)
{
        char buf[DCOLS];

        if (r_rings == 0) {
                messagef(0, "not wearing any rings");
        } else {
                if (rogue.left_ring) {
                        get_desc(rogue.left_ring, buf, sizeof(buf));
                        messagef(0, "%s", buf);
                }
                if (rogue.right_ring) {
                        get_desc(rogue.right_ring, buf, sizeof(buf));
                        messagef(0, "%s", buf);
                }
        }
        if (wizard) {
                messagef(0, "ste %d, r_r %d, e_r %d, r_t %d, s_s %d, a_s %d, reg %d, r_e %d, s_i %d, m_a %d, aus %d",
                        stealthy, r_rings, e_rings, r_teleport, sustain_strength,
                        add_strength, regeneration, ring_exp, r_see_invisible,
                        maintain_armor, auto_search);
        }
}

void
ring_stats(boolean pr)
{
        short i;
        object *ring;

        stealthy = 0;
        r_rings = 0;
        e_rings = 0;
        r_teleport = 0;
        sustain_strength = 0;
        add_strength = 0;
        regeneration = 0;
        ring_exp = 0;
        r_see_invisible = 0;
        maintain_armor = 0;
        auto_search = 0;

        for (i = 0; i < 2; i++) {
                if (!(ring = ((i == 0) ? rogue.left_ring : rogue.right_ring))) {
                        continue;
                }
                r_rings++;
                e_rings++;
                switch(ring->which_kind) {
                case STEALTH:
                        stealthy++;
                        break;
                case R_TELEPORT:
                        r_teleport = 1;
                        break;
                case REGENERATION:
                        regeneration++;
                        break;
                case SLOW_DIGEST:
                        e_rings -= 2;
                        break;
                case ADD_STRENGTH:
                        add_strength += ring->class;
                        break;
                case SUSTAIN_STRENGTH:
                        sustain_strength = 1;
                        break;
                case DEXTERITY:
                        ring_exp += ring->class;
                        break;
                case ADORNMENT:
                        break;
                case R_SEE_INVISIBLE:
                        r_see_invisible = 1;
                        break;
                case MAINTAIN_ARMOR:
                        maintain_armor = 1;
                        break;
                case SEARCHING:
                        auto_search += 2;
                        break;
                }
        }
        if (pr) {
                print_stats(STAT_STRENGTH);
                relight();
        }
}