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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/>.
*
*/
#include "gnap/gnap.h"
#include "common/config-manager.h"
#include "engines/advancedDetector.h"
#include "common/savefile.h"
#include "common/system.h"
#include "base/plugins.h"
#include "graphics/thumbnail.h"
class GnapMetaEngine : public AdvancedMetaEngine<ADGameDescription> {
public:
const char *getName() const override {
return "gnap";
}
bool hasFeature(MetaEngineFeature f) const override;
Common::Error createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const override;
int getMaximumSaveSlot() const override;
SaveStateList listSaves(const char *target) const override;
SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const override;
bool removeSaveState(const char *target, int slot) const override;
};
bool GnapMetaEngine::hasFeature(MetaEngineFeature f) const {
return
(f == kSupportsListSaves) ||
(f == kSupportsLoadingDuringStartup) ||
(f == kSupportsDeleteSave) ||
(f == kSavesSupportMetaInfo) ||
(f == kSavesSupportThumbnail) ||
(f == kSavesSupportCreationDate) ||
(f == kSimpleSavesNames);
}
bool Gnap::GnapEngine::hasFeature(EngineFeature f) const {
return
(f == kSupportsReturnToLauncher) ||
(f == kSupportsLoadingDuringRuntime) ||
(f == kSupportsSavingDuringRuntime);
}
bool GnapMetaEngine::removeSaveState(const char *target, int slot) const {
Common::String fileName = Common::String::format("%s.%03d", target, slot);
return g_system->getSavefileManager()->removeSavefile(fileName);
}
int GnapMetaEngine::getMaximumSaveSlot() const { return 99; }
SaveStateList GnapMetaEngine::listSaves(const char *target) const {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::StringArray filenames;
Common::String saveDesc;
Common::String pattern = Common::String::format("%s.0##", target);
Gnap::GnapSavegameHeader header;
filenames = saveFileMan->listSavefiles(pattern);
SaveStateList saveList;
for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
const char *ext = strrchr(file->c_str(), '.');
int slot = ext ? atoi(ext + 1) : -1;
if (slot >= 0 && slot < getMaximumSaveSlot()) {
Common::InSaveFile *in = g_system->getSavefileManager()->openForLoading(*file);
if (in) {
if (Gnap::GnapEngine::readSavegameHeader(in, header))
saveList.push_back(SaveStateDescriptor(this, slot, header._saveName));
delete in;
}
}
}
// Sort saves based on slot number.
Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
return saveList;
}
SaveStateDescriptor GnapMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
Common::String fileName = Common::String::format("%s.%03d", target, slot);
Common::InSaveFile *file = g_system->getSavefileManager()->openForLoading(fileName);
if (file) {
char saveIdentBuffer[5];
file->read(saveIdentBuffer, 5);
int32 version = file->readByte();
if (version > GNAP_SAVEGAME_VERSION) {
delete file;
return SaveStateDescriptor();
}
Common::String saveName;
char ch;
while ((ch = (char)file->readByte()) != '\0')
saveName += ch;
SaveStateDescriptor desc(this, slot, saveName);
if (version != 1) {
Graphics::Surface *thumbnail;
if (!Graphics::loadThumbnail(*file, thumbnail)) {
delete file;
return SaveStateDescriptor();
}
desc.setThumbnail(thumbnail);
}
int year = file->readSint16LE();
int month = file->readSint16LE();
int day = file->readSint16LE();
int hour = file->readSint16LE();
int minutes = file->readSint16LE();
desc.setSaveDate(year, month, day);
desc.setSaveTime(hour, minutes);
delete file;
return desc;
}
return SaveStateDescriptor();
}
Common::Error GnapMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
*engine = new Gnap::GnapEngine(syst, desc);
return Common::kNoError;
}
#if PLUGIN_ENABLED_DYNAMIC(GNAP)
REGISTER_PLUGIN_DYNAMIC(GNAP, PLUGIN_TYPE_ENGINE, GnapMetaEngine);
#else
REGISTER_PLUGIN_STATIC(GNAP, PLUGIN_TYPE_ENGINE, GnapMetaEngine);
#endif
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