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.Game/Support/Arguments.cs

@@ -0,0 +1,40 @@
+#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.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace OpenRA
+{
+	public class Arguments
+	{
+		readonly Dictionary<string, string> args = [];
+
+		public static Arguments Empty => new();
+
+		public Arguments(params string[] src)
+		{
+			var regex = new Regex("([^=]+)=(.*)");
+			foreach (var s in src)
+			{
+				var m = regex.Match(s);
+				if (!m.Success)
+					continue;
+
+				args[m.Groups[1].Value] = m.Groups[2].Value;
+			}
+		}
+
+		public bool Contains(string key) { return args.ContainsKey(key); }
+		public string GetValue(string key, string defaultValue) { return Contains(key) ? args[key] : defaultValue; }
+		public void ReplaceValue(string key, string value) { args[key] = value; }
+	}
+}