palette.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 TOLTECS_PALETTE_H
#define TOLTECS_PALETTE_H

#include "common/array.h"
#include "common/system.h"

#include "toltecs/toltecs.h"

namespace Toltecs {

//#define ROT(index) (((index << 4) & 0xF0) | ((index >> 4) & 0x0F))
//#define ROT(index) (index)

class Palette {
public:
    Palette(ToltecsEngine *vm);
    ~Palette();

    void setFullPalette(byte *palette);
    void getFullPalette(byte *palette);
    void setDeltaPalette(byte *palette, byte mask, int8 deltaValue, int16 count, int16 startIndex);

    void loadAddPalette(uint resIndex, byte startIndex);
    void loadAddPaletteFrom(byte *source, byte startIndex, byte count);

    void addFragment(uint resIndex, int16 id);
    uint16 findFragment(int16 id);
    void clearFragments();

    byte getMatchingColor(byte r, byte g, byte b);
    void buildColorTransTable(byte limit, int8 deltaValue, byte mask);
    byte getColorTransPixel(byte pixel) const { return _colorTransTable[pixel]; }

    byte *getMainPalette() { return _mainPalette; }
    byte *getAnimPalette() { return _animPalette; }

    void saveState(Common::WriteStream *out);
    void loadState(Common::ReadStream *in);

protected:

    struct PaletteFragment {
        int16 id;
        byte index, count;
    };

    typedef Common::Array<PaletteFragment> PaletteFragmentArray;

    ToltecsEngine *_vm;

    byte _mainPalette[768];
    byte _animPalette[768];
    byte _colorTransTable[256];

    PaletteFragmentArray _fragments;
    byte _fragmentIndex;

};

} // End of namespace Toltecs

#endif /* TOLTECS_PALETTE_H */