Editor marker tiles layer

OpenRA.Mods.Common/UpdateRules/Rules/20231010/AddMarkerLayerOverlay.cs

@@ -0,0 +1,33 @@
+#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;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class AddMarkerLayerOverlay : UpdateRule
+	{
+		public override string Name => "Add MarkerLayerOverlay.";
+
+		public override string Description =>
+			"Add MarkerLayerOverlay to editor.";
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNodeBuilder actorNode)
+		{
+			var editorWorldNode = actorNode.LastChildMatching("EditorWorld");
+			if (editorWorldNode == null)
+				yield break;
+
+			var markerLayerOverlayNode = new MiniYamlNodeBuilder("MarkerLayerOverlay", new MiniYamlBuilder(""));
+			editorWorldNode.AddNode(markerLayerOverlayNode);
+		}
+	}
+}