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engines/zvision/file/save_manager.h

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+/* 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/memstream.h"
+#include "common/savefile.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:
+	/**
+	 * Copies the data from the last auto-save into a new save file. We
+	 * can't use the current state data because the save menu *IS* a room.
+	 * The file is named using ZVision::generateSaveFileName(slot)
+	 *
+	 * @param slot        The save slot this save pertains to. Must be [1, 20]
+	 * @param saveName    The internal name for this save. This is NOT the name of the actual save file.
+	 */
+	void saveGame(uint slot, const Common::String &saveName, bool useSaveBuffer);
+	/**
+	 * Loads the state data from the save file that slot references. Uses
+	 * ZVision::generateSaveFileName(slot) to get the save file name.
+	 *
+	 * @param slot    The save slot to load. Must be [1, 20]
+	 */
+	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