scummvm/engines/zvision/detection.cpp

/* 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *
 */

#include "base/plugins.h"

#include "engines/advancedDetector.h"

#include "common/translation.h"
#include "common/savefile.h"
#include "common/str-array.h"
#include "common/system.h"

#include "zvision/zvision.h"


namespace ZVision {

struct ZVisionGameDescription {
	ADGameDescription desc;
};

uint32 ZVision::getFeatures() const {
	return _gameDescription->desc.flags;
}

Common::Language ZVision::getLanguage() const {
	return _gameDescription->desc.language;
}

}

static const PlainGameDescriptor zVisionGames[] = {
	{"zvision",  "ZVision Game"},
	{"znemesis", "Zork Nemesis: The Forbidden Lands"},
	{"zgi",      "Zork: Grand Inquisitor"},
	{0, 0}
};


namespace ZVision {

static const ZVisionGameDescription gameDescriptions[] = {

	{
		// Zork Nemesis English version
		{
			"znemesis",
			0,
			AD_ENTRY1s("CSCR.ZFS", "88226e51a205d2e50c67a5237f3bd5f2", 2397741),
			Common::EN_ANY,
			Common::kPlatformDOS,
			ADGF_NO_FLAGS,
			GUIO1(GUIO_NONE)
		},
	},

	{ AD_TABLE_END_MARKER }
};

} // End of namespace ZVision

static const char *directoryGlobs[] = {
	"znemscr",
	0
};

static const ExtraGuiOption ZVisionExtraGuiOption = {
	_s("Use original save/load screens"),
	_s("Use the original save/load screens, instead of the ScummVM ones"),
	"originalsaveload",
	false
};

class ZVisionMetaEngine : public AdvancedMetaEngine {
public:
	ZVisionMetaEngine() : AdvancedMetaEngine(ZVision::gameDescriptions, sizeof(ZVision::ZVisionGameDescription), zVisionGames) {
		_maxScanDepth = 2;
		_directoryGlobs = directoryGlobs;
		_singleid = "zvision";
	}

	virtual const char *getName() const {
		return "ZVision";
	}

	virtual const char *getOriginalCopyright() const {
		return "ZVision Activision (C) 1996";
	}

	virtual bool hasFeature(MetaEngineFeature f) const;
	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
	virtual const ExtraGuiOptions getExtraGuiOptions(const Common::String &target) const;
	SaveStateList listSaves(const char *target) const;
	virtual int getMaximumSaveSlot() const;
	void removeSaveState(const char *target, int slot) const;
	SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
};

bool ZVisionMetaEngine::hasFeature(MetaEngineFeature f) const {
	return false;
		/*
		(f == kSupportsListSaves) ||
		(f == kSupportsLoadingDuringStartup) ||
		(f == kSupportsDeleteSave) ||
		(f == kSavesSupportMetaInfo) ||
		(f == kSavesSupportThumbnail) ||
		(f == kSavesSupportCreationDate) ||
		(f == kSavesSupportPlayTime);
		*/
}

/*bool ZVision::ZVision::hasFeature(EngineFeature f) const {
	return
		(f == kSupportsRTL) ||
		(f == kSupportsLoadingDuringRuntime) ||
		(f == kSupportsSavingDuringRuntime);
}*/

bool ZVisionMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
	const ZVision::ZVisionGameDescription *gd = (const ZVision::ZVisionGameDescription *)desc;
	if (gd) {
		*engine = new ZVision::ZVision(syst, gd);
	}
	return gd != 0;
}

const ExtraGuiOptions ZVisionMetaEngine::getExtraGuiOptions(const Common::String &target) const {
	ExtraGuiOptions options;
	options.push_back(ZVisionExtraGuiOption);
	return options;
}

SaveStateList ZVisionMetaEngine::listSaves(const char *target) const {
	//Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	/*ZVision::ZVision::SaveHeader header;
	Common::String pattern = target;
	pattern += ".???";

	Common::StringArray filenames;
	filenames = saveFileMan->listSavefiles(pattern.c_str());
	Common::sort(filenames.begin(), filenames.end());	// Sort (hopefully ensuring we are sorted numerically..)*/

	SaveStateList saveList;
/*	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); file++) {
		// Obtain the last 3 digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + file->size() - 3);

		if (slotNum >= 0 && slotNum <= 999) {
			Common::InSaveFile *in = saveFileMan->openForLoading(file->c_str());
			if (in) {
				if (ZVision::ZVision::readSaveHeader(in, false, header) == ZVision::ZVision::kRSHENoError) {
					saveList.push_back(SaveStateDescriptor(slotNum, header.description));
				}
				delete in;
			}
		}
	}*/

	return saveList;
}

int ZVisionMetaEngine::getMaximumSaveSlot() const {
	return 999;
}

void ZVisionMetaEngine::removeSaveState(const char *target, int slot) const {
	/*
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::String filename = ZVision::ZVision::getSavegameFilename(target, slot);

	saveFileMan->removeSavefile(filename.c_str());

	Common::StringArray filenames;
	Common::String pattern = target;
	pattern += ".???";
	filenames = saveFileMan->listSavefiles(pattern.c_str());
	Common::sort(filenames.begin(), filenames.end());	// Sort (hopefully ensuring we are sorted numerically..)

	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 3 digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + file->size() - 3);

		// Rename every slot greater than the deleted slot,
		if (slotNum > slot) {
			saveFileMan->renameSavefile(file->c_str(), filename.c_str());
			filename = ZVision::ZVision::getSavegameFilename(target, ++slot);
		}
	}
	*/
}

SaveStateDescriptor ZVisionMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
	/*
	Common::String filename = ZVision::ZVision::getSavegameFilename(target, slot);
	Common::InSaveFile *in = g_system->getSavefileManager()->openForLoading(filename.c_str());

	if (in) {
		ZVision::ZVision::SaveHeader header;
		ZVision::ZVision::kReadSaveHeaderError error;

		error = ZVision::ZVision::readSaveHeader(in, true, header);
		delete in;

		if (error == ZVision::ZVision::kRSHENoError) {
			SaveStateDescriptor desc(slot, header.description);

			desc.setThumbnail(header.thumbnail);

			if (header.version > 0) {
				int day = (header.saveDate >> 24) & 0xFF;
				int month = (header.saveDate >> 16) & 0xFF;
				int year = header.saveDate & 0xFFFF;

				desc.setSaveDate(year, month, day);

				int hour = (header.saveTime >> 16) & 0xFF;
				int minutes = (header.saveTime >> 8) & 0xFF;

				desc.setSaveTime(hour, minutes);

				desc.setPlayTime(header.playTime * 1000);
			}

			return desc;
		}
	}
	*/

	return SaveStateDescriptor();
}

#if PLUGIN_ENABLED_DYNAMIC(ZVISION)
	REGISTER_PLUGIN_DYNAMIC(ZVISION, PLUGIN_TYPE_ENGINE, ZVisionMetaEngine);
#else
	REGISTER_PLUGIN_STATIC(ZVISION, PLUGIN_TYPE_ENGINE, ZVisionMetaEngine);
#endif