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/Lint/CheckMapMetadata.cs

@@ -0,0 +1,45 @@
+#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.Collections.Immutable;
+using OpenRA.Server;
+
+namespace OpenRA.Mods.Common.Lint
+{
+	public class CheckMapMetadata : ILintMapPass, ILintServerMapPass
+	{
+		void ILintMapPass.Run(Action<string> emitError, Action<string> emitWarning, ModData modData, Map map)
+		{
+			Run(emitError, map.MapFormat, map.Author, map.Title, map.Categories);
+		}
+
+		void ILintServerMapPass.Run(Action<string> emitError, Action<string> emitWarning, ModData modData, MapPreview map, Ruleset mapRules)
+		{
+			Run(emitError, map.MapFormat, map.Author, map.Title, map.Categories);
+		}
+
+		static void Run(Action<string> emitError, int mapFormat, string author, string title, ImmutableArray<string> categories)
+		{
+			if (mapFormat < Map.SupportedMapFormat)
+				emitError($"Map format `{mapFormat}` does not match the supported version `{Map.CurrentMapFormat}`.");
+
+			if (author == null)
+				emitError("Map does not define a valid author.");
+
+			if (title == null)
+				emitError("Map does not define a valid title.");
+
+			if (categories.Length == 0)
+				emitError("Map does not define any categories.");
+		}
+	}
+}