save_manager.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 ZVISION_SAVE_MANAGER_H
#define ZVISION_SAVE_MANAGER_H

#include "common/savefile.h"
#include "common/memstream.h"

namespace Common {
class String;
}

namespace Graphics {
struct Surface;
}

namespace ZVision {

class ZVision;

struct SaveGameHeader {
    byte version;
    Common::String saveName;
    Graphics::Surface *thumbnail;
    int16 saveYear, saveMonth, saveDay;
    int16 saveHour, saveMinutes;
    uint32 playTime;
};

class SaveManager {
public:
    SaveManager(ZVision *engine) : _engine(engine), _tempSave(NULL), _tempThumbnail(NULL), _lastSaveTime(0) {}
    ~SaveManager() {
        flushSaveBuffer();
    }

    uint32 getLastSaveTime() const {
        return _lastSaveTime;
    }

private:
    ZVision *_engine;
    uint32 _lastSaveTime;
    static const uint32 SAVEGAME_ID;

    enum {
        SAVE_ORIGINAL = 0,
        SAVE_VERSION  = 2
    };

    Common::MemoryWriteStreamDynamic *_tempThumbnail;
    Common::MemoryWriteStreamDynamic *_tempSave;

public:
    void saveGame(uint slot, const Common::String &saveName, bool useSaveBuffer);
    Common::Error loadGame(int slot);

    Common::SeekableReadStream *getSlotFile(uint slot);
    bool readSaveGameHeader(Common::SeekableReadStream *in, SaveGameHeader &header, bool skipThumbnail = true);

    void prepareSaveBuffer();
    void flushSaveBuffer();
    bool scummVMSaveLoadDialog(bool isSave);
private:
    void writeSaveGameHeader(Common::OutSaveFile *file, const Common::String &saveName, bool useSaveBuffer);
};

} // End of namespace ZVision

#endif