public void WriteData(string filename) { using (FileStream file = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite)) { file.Write(new byte[] { 0x47, 0x54, 0x44, 0x54, 0x6C, 0x00, 0x3E, 0x00 }, 0, 8); // The 0x3E is the number of indices file.Position = (0x3E * 8) + 7; file.WriteByte(0x00); // Data starts at 0x1F8 so position EOF uint i = 1; BrakeParts.Write(file, 8 * i++); BrakeControllerParts.Write(file, 8 * i++); SteerParts.Write(file, 8 * i++); ChassisParts.Write(file, 8 * i++); LightweightParts.Write(file, 8 * i++); RacingModifyParts.Write(file, 8 * i++); EngineParts.Write(file, 8 * i++); PortPolishParts.Write(file, 8 * i++); EngineBalanceParts.Write(file, 8 * i++); DisplacementParts.Write(file, 8 * i++); ComputerParts.Write(file, 8 * i++); NATuneParts.Write(file, 8 * i++); TurbineKitParts.Write(file, 8 * i++); DrivetrainParts.Write(file, 8 * i++); FlywheelParts.Write(file, 8 * i++); ClutchParts.Write(file, 8 * i++); PropellerShaftParts.Write(file, 8 * i++); GearParts.Write(file, 8 * i++); SuspensionParts.Write(file, 8 * i++); IntercoolerParts.Write(file, 8 * i++); MufflerParts.Write(file, 8 * i++); LSDParts.Write(file, 8 * i++); TiresFrontParts.Write(file, 8 * i++); TiresRearParts.Write(file, 8 * i++); TireSizes.Write(file, 8 * i++); TireCompounds.Write(file, 8 * i++); TireForceVols.Write(file, 8 * i++); ActiveStabilityControlParts.Write(file, 8 * i++); TractionControlSystemParts.Write(file, 8 * i++); Unknown.Write(file, 8 * i++); Cars.Write(file, 8 * i++); file.Position = 0; using (FileStream zipFile = new FileStream(filename + ".gz", FileMode.Create, FileAccess.Write)) { using (GZipStream zip = new GZipStream(zipFile, CompressionMode.Compress)) { file.CopyTo(zip); } } } }