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;
}
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;
}
