UFlareSaveGame* UFlareSaveGameSystem::LoadGame(const FString SaveName)
{
FLOGV("UFlareSaveGameSystem::LoadGame SaveName=%s", *SaveName);
UFlareSaveGame *SaveGame = NULL;
// Read the saveto a string
FString SaveString;
if(FFileHelper::LoadFileToString(SaveString, *GetSaveGamePath(SaveName)))
{
// Deserialize a JSON object from the string
TSharedPtr< FJsonObject > Object;
TSharedRef< TJsonReader<> > Reader = TJsonReaderFactory<>::Create(SaveString);
if(FJsonSerializer::Deserialize(Reader, Object) && Object.IsValid())
{
UFlareSaveReaderV1* SaveReader = NewObject<UFlareSaveReaderV1>(this, UFlareSaveReaderV1::StaticClass());
SaveGame = SaveReader->LoadGame(Object);
}
else
{
FLOGV("Fail to deserialize save '%s'", *GetSaveGamePath(SaveName));
}
}
else
{
FLOGV("Fail to read save '%s'", *GetSaveGamePath(SaveName));
}
return SaveGame;
}
bool UFlareSaveGameSystem::SaveGame(const FString SaveName, UFlareSaveGame* SaveData)
{
bool ret = false;
SaveLock.Lock();
FLOGV("UFlareSaveGameSystem::SaveGame SaveName=%s", *SaveName);
UFlareSaveWriter* SaveWriter = NewObject<UFlareSaveWriter>(this, UFlareSaveWriter::StaticClass());
TSharedRef<FJsonObject> JsonObject = SaveWriter->SaveGame(SaveData);
// Save the json object
FString FileContents;
//TSharedRef< TJsonWriter<TCHAR, TCondensedJsonPrintPolicy<TCHAR>> > JsonWriter = TJsonWriterFactory<TCHAR, TCondensedJsonPrintPolicy<TCHAR>>::Create(&FileContents);
TSharedRef< TJsonWriter<> > JsonWriter = TJsonWriterFactory<>::Create(&FileContents);
if (FJsonSerializer::Serialize(JsonObject, JsonWriter))
{
JsonWriter->Close();
ret = FFileHelper::SaveStringToFile(FileContents, *GetSaveGamePath(SaveName));
FLOG("UFlareSaveGameSystem::SaveGame : Save done");
}
else
{
FLOGV("Fail to serialize save %s", *SaveName);
ret = false;
}
SaveLock.Unlock();
return ret;
}
bool UFlareSaveGameSystem::SaveGame(const FString SaveName, UFlareSaveGame* SaveData)
{
bool ret = false;
SaveLock.Lock();
FLOGV("UFlareSaveGameSystem::SaveGame SaveName=%s", *SaveName);
UFlareSaveWriter* SaveWriter = NewObject<UFlareSaveWriter>(this, UFlareSaveWriter::StaticClass());
TSharedRef<FJsonObject> JsonObject = SaveWriter->SaveGame(SaveData);
// Save the json object
FString FileContents;
//TSharedRef< TJsonWriter<TCHAR, TCondensedJsonPrintPolicy<TCHAR>> > JsonWriter = TJsonWriterFactory<TCHAR, TCondensedJsonPrintPolicy<TCHAR>>::Create(&FileContents);
TSharedRef< TJsonWriter<> > JsonWriter = TJsonWriterFactory<>::Create(&FileContents);
if (FJsonSerializer::Serialize(JsonObject, JsonWriter))
{
JsonWriter->Close();
bool Compress = true;
if(Compress)
{
uint32 StrLength = FCStringAnsi::Strlen(TCHAR_TO_UTF8(*FileContents));
uint8* CompressedDataRaw = new uint8[StrLength];
int32 CompressedSize = StrLength;
const bool bResult = FCompression::CompressMemory((ECompressionFlags)(COMPRESS_GZIP), CompressedDataRaw, CompressedSize, TCHAR_TO_UTF8(*FileContents), StrLength);
if (bResult)
{
ret = FFileHelper::SaveArrayToFile(TArrayView<const uint8>(CompressedDataRaw, CompressedSize), *GetSaveGamePath(SaveName, true));
}
delete[] CompressedDataRaw;
}
else
{
ret = FFileHelper::SaveStringToFile(FileContents, *GetSaveGamePath(SaveName, false));
}
FLOG("UFlareSaveGameSystem::SaveGame : Save done");
}
else
{
FLOGV("Fail to serialize save %s", *SaveName);
ret = false;
}
SaveLock.Unlock();
SaveListLock.Lock();
SaveList.Remove(SaveData);
SaveListLock.Unlock();
return ret;
}
bool UFlareSaveGameSystem::DeleteGame(const FString SaveName)
{
return IFileManager::Get().Delete(*GetSaveGamePath(SaveName), true);
}
bool UFlareSaveGameSystem::DoesSaveGameExist(const FString SaveName)
{
return IFileManager::Get().FileSize(*GetSaveGamePath(SaveName)) >= 0;
}
UFlareSaveGame* UFlareSaveGameSystem::LoadGame(const FString SaveName)
{
FLOGV("UFlareSaveGameSystem::LoadGame SaveName=%s", *SaveName);
UFlareSaveGame *SaveGame = NULL;
// Read the saveto a string
FString SaveString;
bool SaveStringLoaded = false;
TArray<uint8> Data;
auto LoadCompressedFileToString = [&](FString& Result, const TCHAR* Filename)
{
TArray<uint8> DataCompressed;
if(!FFileHelper::LoadFileToArray(DataCompressed, Filename))
{
FLOGV("Fail to read save '%s'", Filename);
return false;
}
int b4 = DataCompressed[DataCompressed.Num()- 4];
int b3 = DataCompressed[DataCompressed.Num()- 3];
int b2 = DataCompressed[DataCompressed.Num()- 2];
int b1 = DataCompressed[DataCompressed.Num()- 1];
int UncompressedSize = (b1 << 24) | (b2 << 16) + (b3 << 8) + b4;
Data.SetNum(UncompressedSize + 1);
if(!FCompression::UncompressMemory((ECompressionFlags)(COMPRESS_ZLIB), Data.GetData(), UncompressedSize, DataCompressed.GetData(), DataCompressed.Num(), false, 31))
{
FLOGV("Fail to uncompress save '%s' with compressed size %d and uncompressed size %d", Filename, DataCompressed.Num(), UncompressedSize);
return false;
}
Data[UncompressedSize] = 0; // end string
Result = UTF8_TO_TCHAR(Data.GetData());
return true;
};
if(LoadCompressedFileToString(SaveString, *GetSaveGamePath(SaveName, true)))
{
FLOGV("Save '%s' read", *GetSaveGamePath(SaveName, true));
SaveStringLoaded = true;
}
else if(FFileHelper::LoadFileToString(SaveString, *GetSaveGamePath(SaveName, false)))
{
FLOGV("Save '%s' read", *GetSaveGamePath(SaveName, false));
SaveStringLoaded = true;
}
if(SaveStringLoaded)
{
// Deserialize a JSON object from the string
TSharedPtr< FJsonObject > Object;
TSharedRef< TJsonReader<> > Reader = TJsonReaderFactory<>::Create(SaveString);
if(FJsonSerializer::Deserialize(Reader, Object) && Object.IsValid())
{
UFlareSaveReaderV1* SaveReader = NewObject<UFlareSaveReaderV1>(this, UFlareSaveReaderV1::StaticClass());
SaveGame = SaveReader->LoadGame(Object);
}
else
{
FLOGV("Fail to deserialize save '%s' (len: %d)", *GetSaveGamePath(SaveName, false), SaveString.Len());
}
}
else
{
FLOGV("Fail to read save '%s' or '%s'", *GetSaveGamePath(SaveName, true), *GetSaveGamePath(SaveName, false));
}
return SaveGame;
}
bool UFlareSaveGameSystem::DeleteGame(const FString SaveName)
{
bool Result = IFileManager::Get().Delete(*GetSaveGamePath(SaveName, false), true) | IFileManager::Get().Delete(*GetSaveGamePath(SaveName, true), true);
return Result;
}