File: detection.cpp

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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 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 "common/savefile.h"
#include "common/serializer.h"
#include "common/str-array.h"
#include "engines/advancedDetector.h"

#include "composer/composer.h"

namespace Composer {

struct ComposerGameDescription {
	ADGameDescription desc;

	int gameType;
};

int ComposerEngine::getGameType() const {
	return _gameDescription->gameType;
}

const char *ComposerEngine::getGameId() const {
	return _gameDescription->desc.gameId;
}

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

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

Common::Platform ComposerEngine::getPlatform() const {
	return _gameDescription->desc.platform;
}

bool ComposerEngine::loadDetectedConfigFile(Common::INIFile &configFile) const {
	const ADGameFileDescription *res = _gameDescription->desc.filesDescriptions;
	while (res->fileName != NULL) {
		if (res->fileType == GAME_CONFIGFILE) {
			return configFile.loadFromFile(res->fileName);
		}
		res++;
	}
	// default config file name
	return configFile.loadFromFile("book.ini") || configFile.loadFromFile("book.mac");
}

}

static const PlainGameDescriptor composerGames[] = {
	{"babayaga", "Magic Tales: Baba Yaga and the Magic Geese"},
	{"darby", "Darby the Dragon"},
	{"gregory", "Gregory and the Hot Air Balloon"},
	{"imoking", "Magic Tales: Imo and the King"},
	{"liam", "Magic Tales: Liam Finds a Story"},
	{"littlesamurai", "Magic Tales: The Little Samurai"},
	{"magictales", "Magic Tales"},
	{"princess", "Magic Tales: The Princess and the Crab"},
	{"sleepingcub", "Magic Tales: Sleeping Cub's Test of Courage"},
	{0, 0}
};

#include "composer/detection_tables.h"

using namespace Composer;

// we match from data too, to stop detection from a non-top-level directory
static const char *directoryGlobs[] = {
	"data",
	"liam",
	"programs",
	"princess",
	"sleepcub",
	0
};

class ComposerMetaEngine : public AdvancedMetaEngine {
public:
	ComposerMetaEngine() : AdvancedMetaEngine(Composer::gameDescriptions, sizeof(Composer::ComposerGameDescription), composerGames) {
		_maxScanDepth = 2;
		_directoryGlobs = directoryGlobs;
	}

	const char *getEngineId() const override {
		return "composer";
	}

	const char *getName() const override {
		return "Magic Composer";
	}

	const char *getOriginalCopyright() const override {
		return "Copyright (C) 1995-1999 Animation Magic";
	}

	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const override;
	bool hasFeature(MetaEngineFeature f) const override;
	int getMaximumSaveSlot() const override;
	SaveStateList listSaves(const char* target) const override;
};

bool ComposerMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
	const Composer::ComposerGameDescription *gd = (const Composer::ComposerGameDescription *)desc;
	if (gd) {
		*engine = new Composer::ComposerEngine(syst, gd);
	}
	return gd != 0;
}

bool ComposerMetaEngine::hasFeature(MetaEngineFeature f) const {
	return ((f == kSupportsListSaves) || (f == kSupportsLoadingDuringStartup));
}

Common::String getSaveName(Common::InSaveFile *in) {
	Common::Serializer ser(in, NULL);
	Common::String name;
	uint32 tmp;
	ser.syncAsUint32LE(tmp);
	ser.syncAsUint32LE(tmp);
	ser.syncString(name);
	return name;
}
int ComposerMetaEngine::getMaximumSaveSlot() const {
	return 99;
}
SaveStateList ComposerMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String saveDesc;
	Common::String pattern = Common::String::format("%s.##", target);

	filenames = saveFileMan->listSavefiles(pattern);

	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() - 2);

		if (slotNum >= 0 && slotNum <= 99) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				saveDesc = getSaveName(in);
				saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
				delete in;
			}
		}
	}

	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
	return saveList;
}

bool Composer::ComposerEngine::hasFeature(EngineFeature f) const {
	return (f == kSupportsReturnToLauncher
		|| f == kSupportsSavingDuringRuntime
		|| f == kSupportsLoadingDuringRuntime);
}

#if PLUGIN_ENABLED_DYNAMIC(COMPOSER)
	REGISTER_PLUGIN_DYNAMIC(COMPOSER, PLUGIN_TYPE_ENGINE, ComposerMetaEngine);
#else
	REGISTER_PLUGIN_STATIC(COMPOSER, PLUGIN_TYPE_ENGINE, ComposerMetaEngine);
#endif