Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/UtilityCommands/ExtractFilesCommand.cs

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+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.IO;
+using System.Linq;
+
+namespace OpenRA.Mods.Common.UtilityCommands
+{
+	sealed class ExtractFilesCommand : IUtilityCommand
+	{
+		string IUtilityCommand.Name => "--extract";
+
+		bool IUtilityCommand.ValidateArguments(string[] args)
+		{
+			return args.Length >= 2;
+		}
+
+		[Desc("FILENAME", "[FILENAME...]", "Extract files from mod packages to the current directory")]
+		void IUtilityCommand.Run(Utility utility, string[] args)
+		{
+			var files = args.Skip(1);
+
+			foreach (var f in files)
+			{
+				var src = utility.ModData.DefaultFileSystem.Open(f);
+				if (src == null)
+					throw new InvalidOperationException($"File not found: {f}");
+				var data = src.ReadAllBytes();
+				File.WriteAllBytes(f, data);
+				Console.WriteLine(f + " saved.");
+			}
+		}
+	}
+}