/*
    misc.c - routines dealing specifically with miscellaneous magic
    
    XRogue: Expeditions into the Dungeons of Doom
    Copyright (C) 1991 Robert Pietkivitch
    All rights reserved.
    
    Based on "Advanced Rogue"
    Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
    All rights reserved.

    See the file LICENSE.TXT for full copyright and licensing information.
*/

#include <stdlib.h>
#include <curses.h>
#include <ctype.h>
#include <string.h>
#include "rogue.h"

/*
 * changeclass:
 *      Change the player's class to the specified one.
 */

changeclass(newclass)
long *newclass;
{
    if (*newclass == player.t_ctype) {
        msg("You feel more skillful.");
        raise_level();
    }
    else {
        /*
         * reset his class and then use check_level to reset hit
         * points and the right level for his exp pts
         * drop exp pts by 10%
         */
        long save;

        msg("You are transformed into a %s! ", char_class[*newclass].name);

        /*
         * if he becomes a thief or an assassin give him studded leather armor
         */
        if ((*newclass == C_THIEF || *newclass == C_ASSASSIN) &&
            cur_armor != NULL && cur_armor->o_which != STUDDED_LEATHER)
                cur_armor->o_which = STUDDED_LEATHER;
        /*
         * if he becomes a monk he can't wear any armor
     * so give him a cloak of protection
         */
        if (*newclass == C_MONK && cur_armor != NULL) {
                cur_armor->o_ac = armors[cur_armor->o_which].a_class - 
                                  cur_armor->o_ac;
                cur_armor->o_type = MM;
                cur_armor->o_which = MM_PROTECT;
                cur_armor->o_flags &= ~(ISPROT | ISKNOW);
                cur_misc[WEAR_CLOAK] = cur_armor;
                cur_armor = NULL;
        }
    /*
     * otherwise give him plate armor
     */
        if ((*newclass != C_THIEF ||
         *newclass != C_ASSASSIN || *newclass != C_MONK) &&
         cur_armor != NULL && cur_armor->o_which != PLATE_ARMOR) 
                cur_armor->o_which = PLATE_ARMOR;

        /*
         * if he used to be a spell caster of some sort, kill the fuse
         */
        if (player.t_ctype == C_MAGICIAN || player.t_ctype == C_RANGER)
                extinguish(spell_recovery);
        if (player.t_ctype == C_DRUID || player.t_ctype == C_MONK)
                extinguish(chant_recovery);
        if ((player.t_ctype == C_CLERIC || player.t_ctype == C_PALADIN) &&
             !cur_relic[HEIL_ANKH])
                extinguish(prayer_recovery);

        /*
         * if he becomes a spell caster of some kind, give him a fuse
         */
        if (*newclass == C_MAGICIAN || *newclass == C_RANGER)
                fuse(spell_recovery, (VOID *)NULL, SPELLTIME, AFTER);
        if (*newclass == C_DRUID || *newclass == C_MONK)
                fuse(chant_recovery, (VOID *)NULL, SPELLTIME, AFTER);
        if ((*newclass==C_CLERIC || *newclass==C_PALADIN) && !cur_misc[HEIL_ANKH])
                fuse(prayer_recovery, (VOID *)NULL, SPELLTIME, AFTER);
        /*
         * if he's changing from a fighter, ranger, or paladin then we
     * may have to change his sword since only these types can wield
     * the two-handed sword.
         */
        if ((player.t_ctype == C_FIGHTER ||
        player.t_ctype == C_RANGER   ||
            player.t_ctype == C_PALADIN) &&
        cur_weapon != NULL && cur_weapon->o_type == WEAPON &&
            (cur_weapon->o_which == BASWORD  ||
        cur_weapon->o_which == TWOSWORD) &&
            !(*newclass == C_FIGHTER || *newclass == C_RANGER ||
            *newclass == C_PALADIN)  &&
        cur_weapon->o_which == TWOSWORD)
                cur_weapon->o_which = SWORD;

        /*
         * if he's changing from a thief, assassin, fighter, or monk
     * then we may have to change his sword again since only these
     * types can wield the bastard sword.
         */
        if ((player.t_ctype == C_THIEF  || player.t_ctype == C_ASSASSIN ||
            player.t_ctype == C_FIGHTER || player.t_ctype == C_MONK)    &&
        cur_weapon != NULL && cur_weapon->o_type == WEAPON &&
            (cur_weapon->o_which == BASWORD  ||
            cur_weapon->o_which == TWOSWORD) &&
            !(*newclass == C_THIEF || *newclass == C_ASSASSIN ||
            *newclass == C_MONK)   &&
        cur_weapon->o_which == BASWORD)
                cur_weapon->o_which = SWORD;

        /*
         * if he was a thief, assassin, or monk then take out
     * the trap_look() daemon
         */
        if (player.t_ctype == C_THIEF || player.t_ctype == C_MONK ||
            player.t_ctype == C_ASSASSIN)
                kill_daemon(trap_look);

        /*
         * if he becomes a thief, assassin, or monk then add 
     * the trap_look() daemon
         */
        if (*newclass == C_THIEF || *newclass == C_ASSASSIN ||
        *newclass == C_MONK)
                start_daemon(trap_look, (VOID *)NULL, AFTER);

    /* adjust stats */
        char_type = player.t_ctype = *newclass;
        save = pstats.s_hpt;
        max_stats.s_hpt = pstats.s_hpt = 0;
        max_stats.s_lvl = pstats.s_lvl = 0; 
        max_stats.s_lvladj = pstats.s_lvladj = 0; 
        max_stats.s_exp = pstats.s_exp + rnd(4);
        check_level();
        if (pstats.s_hpt > save) /* don't add to current hits */
            pstats.s_hpt = save;
    }
    dsrpt_player(); /* this should disrupt whatever we were doing */
}

/*
 * Use the relic that our monster is wielding.
 */

m_use_relic(monster)
register struct thing *monster;
{
    register struct object *obj;

    /* Make sure we really have it */
    if (monster->t_using) obj = OBJPTR(monster->t_using);
    else {
        debug("Relic not set!");
        monster->t_action = A_NIL;
        return;
    }

    /* Now let's see what we're using */
    if (obj->o_type == RELIC) switch (obj->o_which) {
        case MING_STAFF: {
            static struct object missile = {
              MISSILE, {0,0}, 0, "", "0d4 " , NULL, 0, WS_MISSILE, 100, 1
            };

            debug("Firing Ming's staff");
            sprintf(missile.o_hurldmg, "%dd4", monster->t_stats.s_lvl);
            do_motion(&missile,
                       monster->t_newpos.y, monster->t_newpos.x, monster);
            hit_monster(unc(missile.o_pos), &missile, monster);
            monster->t_artifact = monster->t_artifact * 4 / 5;
        }
        when EMORI_CLOAK:
            debug("stunning with Emori's cloak");
            do_zap(monster, obj, &monster->t_newpos, WS_PARALYZE, NULL);
            obj->o_charges = 0;

        when ASMO_ROD: {
            char *name;

            switch (rnd(3)) { /* Select a function */
                case 0:    name = "lightning bolt";
                when 1:    name = "flame";
                otherwise: name = "ice";
            }
            shoot_bolt( monster, 
                        monster->t_pos, 
                        monster->t_newpos, 
                        FALSE, 
                        monster->t_index, 
                        name, 
                        roll(monster->t_stats.s_lvl,6));
            monster->t_artifact /= 2;
        }
        when BRIAN_MANDOLIN:
            /* Make sure the defendant is still around */
            if (DISTANCE(monster->t_pos.y, monster->t_pos.x,
                         hero.y, hero.x) < 25) {
                if (!save(VS_MAGIC, &player, -4) &&
                    !ISWEARING(R_ALERT)) {
                    msg("Some beautiful music enthralls you.");
                    player.t_no_move += movement(&player) * FREEZETIME;
                    player.t_action = A_FREEZE;
                    monster->t_artifact = monster->t_artifact * 2 / 3;
                }
                else {
                    msg("You wince at a sour note.");
                    monster->t_artifact /= 3;
                }
            }
        when GERYON_HORN:
            /* Make sure the defendant is still around */
            if (DISTANCE(monster->t_pos.y, monster->t_pos.x,
                         hero.y, hero.x) < 25) {
                if (!ISWEARING(R_HEROISM) &&
                    !save(VS_MAGIC, &player, -4)) {
                        turn_on(player, ISFLEE);
                        player.t_dest = &monster->t_pos;
                        msg("A shrill blast terrifies you.");
                        monster->t_artifact = monster->t_artifact * 3 / 4;
                }
                else  {
                    msg("A shrill blast sends chills up your spine! ");
                    monster->t_artifact /= 3;
                }
            }

        otherwise:
            /* Unknown RELIC! */
            debug("Unknown wielded relic %d", obj->o_which);
    }
    else debug("Declared relic is %d", obj->o_type);

    turn_off(*monster, CANSURPRISE);
    /* Reset the monsters actions */
    monster->t_action = A_NIL;
    monster->t_using = NULL;
}
 
/*
 * add something to the contents of something else
 */

put_contents(bag, item)
register struct object *bag;            /* the holder of the items */
register struct linked_list *item;      /* the item to put inside  */
{
    register struct linked_list *titem;
    register struct object *tobj;

    bag->o_ac++;
    tobj = OBJPTR(item);
    for (titem = bag->contents; titem != NULL; titem = next(titem)) {
        if ((OBJPTR(titem))->o_which == tobj->o_which)
            break;
    }
    if (titem == NULL) {        /* if not a duplicate put at beginning */
        attach(bag->contents, item);
    }
    else {
        item->l_prev = titem;
        item->l_next = titem->l_next;
        if (next(titem) != NULL) 
            (titem->l_next)->l_prev = item;
        titem->l_next = item;
    }
}

/*
 * remove something from something else
 */

take_contents(bag, item)
register struct object *bag;            /* the holder of the items */
register struct linked_list *item;
{

    if (bag->o_ac <= 0) {
        msg("Nothing to take out");
        return;
    }
    bag->o_ac--;
    detach(bag->contents, item);
    if (!add_pack(item, FALSE))
        put_contents(bag, item);
}


do_bag(item)
register struct linked_list *item;
{

    register struct linked_list *titem = NULL;
    register struct object *obj, *tobj;
    bool doit = TRUE;

    obj = OBJPTR(item);
    while (doit) {
        msg("What do you want to do? (* for a list): ");
        mpos = 0;
        switch (wgetch(cw)) {
            case EOF:
            case ESC:
                msg ("");
                doit = FALSE;
            when '1':
                inventory(obj->contents, ALL);

            when '2':
                if (obj->o_ac >= MAXCONTENTS) {
                    msg("the %s is full", m_magic[obj->o_which].mi_name);
                    break;
                }
                switch (obj->o_which) {
                case MM_BEAKER:
                    titem = get_item(pack, "put in", POTION, FALSE, FALSE);
                when MM_BOOK:
                    titem = get_item(pack, "put in", SCROLL, FALSE, FALSE);
                }
                if (titem == NULL)
                    break;
                detach(pack, titem);
                inpack--;
                put_contents(obj, titem);
            
            when '3':
                titem = get_item(obj->contents,"take out",ALL,FALSE,FALSE);
                if (titem == NULL)
                    break;
                take_contents(obj, titem);
                
            when '4': 
                switch (obj->o_which) {
                case MM_BEAKER:
                    titem = get_item(obj->contents,"quaff",ALL,FALSE,FALSE);
                    if (titem == NULL)
                        break;
                    tobj = OBJPTR(titem);
                    obj->o_ac--;
                    detach(obj->contents, titem);
                    quaff(tobj->o_which, 
                          tobj->o_kind,
                          tobj->o_flags,
                          TRUE);
                    if (p_know[tobj->o_which] && p_guess[tobj->o_which])
                    {
                        free(p_guess[tobj->o_which]);
                        p_guess[tobj->o_which] = NULL;
                    }