Minecraft Launch

gistfile1.cs

private static void AutoLaunchApplication(IEnumerable<string> commandLineOptions)
        {
            const string java6Location = @"C:\Program Files\Java\jre6\bin\javaw.exe";
            const string java7Location = @"C:\Program Files\Java\jre7\bin\javaw.exe";

            var javaLocation = File.Exists(java7Location) ? java7Location : java6Location;

            // check for java - eww
            if (!File.Exists(javaLocation)) // default java location for both 32/64 bit
            {
                MessageBox.Show(@"Java not found, exiting", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            // get latest version
            if (!File.Exists("./minecraft.jar"))
                new WebClient().DownloadFile("https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft.jar", "./minecraft.jar");

            var memory = 1024;

            if (commandLineOptions.Any(x => x.StartsWith("-memory:")))
            {
                var memoryCommandLineOption = commandLineOptions.FirstOrDefault(x => x.StartsWith("-memory:"));
                if (!String.IsNullOrWhiteSpace(memoryCommandLineOption))
                {
                    // TODO: Validate this to 512/1024/2048/4096?
                    var memoryValue = memoryCommandLineOption.Split(':').Last();
                    int.TryParse(memoryValue, out memory);
                }
            }

            // So I can do javaw Xms# Xmx# -cp -jar launcher/launcher.jar username xxx pass xxx fullscreen w h
            // javaw -cp Minecraft.jar net.minecraft.LauncherFrame <username> <password> <server ip:port> -- doesn't seem to work :/
            var processStartInfo = new ProcessStartInfo { Arguments = "-Xmx" + memory + "M -Xms" + memory + "M -jar \"" + Path.GetFullPath("./minecraft.jar") + "\"", FileName = javaLocation, WorkingDirectory = Environment.CurrentDirectory, UseShellExecute = false };

            // set to local environment for this
            if (commandLineOptions.Contains("-local"))
                processStartInfo.EnvironmentVariables["APPDATA"] = Environment.CurrentDirectory;

            // set the custom environment for this
            else if (commandLineOptions.Contains("-custom"))
                processStartInfo.EnvironmentVariables["APPDATA"] = commandLineOptions.Last();

            var process = Process.Start(processStartInfo);

            while (process.MainWindowHandle == IntPtr.Zero)
            {
                process.WaitForExit(10);
                if (process.HasExited)
                    return;
            }

            NativeMethods.SetWindowFullScreenWindowed(process.MainWindowHandle);
        }