获取游戏路径
FString gameDir = FPaths::GameDir();
写入文件
FString path;
FString string;
FFileHelper::SaveStringToFile(string, *path);
读取文件
FString path;
FString string;
FFileHelper::LoadFileToString(string, *path);
bool FFileHelper::SaveStringToFile( const FString& String, const TCHAR* Filename, EEncodingOptions EncodingOptions, IFileManager* FileManager /*= &IFileManager::Get()*/, uint32 WriteFlags )
EncodingOptions 默认为unicode 用utf-8中文不乱码