/*
   Kitsune's Curse
   Copyright (C) 2020-2023 Juan J. Martinez <jjm@usebox.net>

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "splib.h"
#include "main.h"

#include "maps.h"

// generated
#include "vampire.h"

#include "entities.h"
#include "et_vampire.h"
#include "et_player.h"

void draw_vampire()
{
    put_sprite4(vampire[player_frames[*it_frame]], *it_x, *it_y, 2, 0);
    erase_sprite(*it_ox, *it_oy, 2);
}

void update_vampire()
{
    // waiting
    if (*it_frame == 4)
    {
        if (!magic && py > *it_y && abs_sub(*it_x, px) < 16 && abs_sub(*it_y, py) < 48)
            *it_frame = 0;
        else
            return;
    }

    if ((*it_delay)++)
    {
        *it_delay = 0;
        if (++(*it_frame) > WALK_CYCLE)
            *it_frame = 0;
    }

    // don't chase the player if dead
    if (!life)
        return;

    if (*it_x > px && !is_map_blocked(*it_x - 1, *it_y + 8))
        *it_x -= 1;
    if (*it_x < px && !is_map_blocked(*it_x + 8, *it_y + 8))
        *it_x += 1;

    if (*it_extra)
    {
        --(*it_extra);
        if (*it_y && !is_map_blocked(*it_x + 4, *it_y - 1))
            *it_y -= 1;
    }
    else
        if (abs_sub(*it_x, px) < 64)
        {
            if (*it_y > py && !is_map_blocked(*it_x + 4, *it_y - 1))
                *it_y -= 2;
            if (*it_y < py && !is_map_blocked(*it_x + 4, *it_y + 16))
                *it_y += 2;
        }

    if (check_for_player(16))
    {
        player_hit(1);
        *it_extra = WAS_HIT << 1;
    }
}