weapon_overlay.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 <http://www.gnu.org/licenses/>.
 *
 */

#ifndef WORLD_ACTORS_WEAPONOVERLAY_H
#define WORLD_ACTORS_WEAPONOVERLAY_H

#include "ultima/shared/std/containers.h"

namespace Ultima {
namespace Ultima8 {

struct WeaponOverlayFrame {
    int32 _xOff;
    int32 _yOff;
    uint32 _frame;
};

struct WeaponOverlay {
    unsigned int _dirCount;
    Std::vector<WeaponOverlayFrame> *_frames; // 8 or 16 directions

    WeaponOverlay() : _frames(nullptr), _dirCount(0) {
    }
    ~WeaponOverlay() {
        delete[] _frames;
    }
};

struct AnimWeaponOverlay {
    const WeaponOverlayFrame *getFrame(unsigned int type,
                                       Direction direction,
                                       unsigned int frame) const {
        if (type >= _overlay.size())
            return nullptr;

        assert(direction != dir_invalid);

        uint32 diroff;
        if (_overlay[type]._dirCount == 8)
            diroff = static_cast<uint32>(direction) / 2;
        else
            diroff = static_cast<uint32>(direction);

        if (diroff >= _overlay[type]._dirCount)
            return nullptr;
        if (frame >= _overlay[type]._frames[diroff].size())
            return nullptr;
        return &(_overlay[type]._frames[diroff][frame]);
    }

    Std::vector<WeaponOverlay> _overlay;
};

} // End of namespace Ultima8
} // End of namespace Ultima

#endif