animseq.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 LURE_ANIMSEQ_H
#define LURE_ANIMSEQ_H

#include "lure/screen.h"

namespace Lure {

enum AnimAbortType {ABORT_NONE, ABORT_END_INTRO, ABORT_NEXT_SCENE};

struct AnimSoundSequence {
    uint16 numFrames;
    uint8 adlibSoundId;
    uint8 rolandSoundId;
    uint8 channelNum;
    bool music;
};

class AnimationSequence {
private:
    bool _isEGA;
    uint16 _screenId;
    Palette &_palette;
    MemoryBlock *_decodedData;
    MemoryBlock *_lineRefs;
    byte *_pPixels, *_pLines;
    byte *_pPixelsStart, *_pLinesStart;
    byte *_pPixelsEnd, *_pLinesEnd;
    const AnimSoundSequence *_soundList;
    int _frameDelay;
    uint8 _loops;

    AnimAbortType delay(uint32 milliseconds);
    void egaDecodeFrame(byte *&pPixels);
    void vgaDecodeFrame(byte *&pPixels, byte *&pLines);
public:
    AnimationSequence(uint16 screenId, Palette &palette,  bool fadeIn, int frameDelay = 7,
        const AnimSoundSequence *soundList = NULL, uint8 loops = 1);
    ~AnimationSequence();

    AnimAbortType show();
    bool step();
    byte *showInitialScreen(byte *pSrc = 0);
};

} // End of namespace Lure

#endif