Split off the upgrade rules of the previous release cycle.

OpenRA.Mods.Common/UpdateRules/Rules/20180307/DefineSquadExcludeHarvester.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2018 The OpenRA Developers (see AUTHORS)
+ * 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.Linq;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class DefineSquadExcludeHarvester : UpdateRule
+	{
+		public override string Name { get { return "Add harvesters to ExcludeFromSquads"; } }
+		public override string Description
+		{
+			get
+			{
+				return "HackyAI no longer automatically excludes actors with Harvester trait from attack squads.\n" +
+					"They need to be explicitly added to ExcludeFromSquads. HackyAI instances are listed for inspection.";
+			}
+		}
+
+		readonly List<string> locations = new List<string>();
+
+		public override IEnumerable<string> AfterUpdate(ModData modData)
+		{
+			if (locations.Any())
+				yield return "The automatic exclusion of harvesters from AI squads has been removed.\n" +
+					"You may wish to add your harvester-type actors to `ExcludeFromSquads` under `UnitCommonNames`\n" +
+					"on the following definitions:\n" +
+					UpdateUtils.FormatMessageList(locations);
+
+			locations.Clear();
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			foreach (var hackyAINode in actorNode.ChildrenMatching("HackyAI"))
+				locations.Add("{0} ({1})".F(hackyAINode.Key, hackyAINode.Location.Filename));
+
+			yield break;
+		}
+	}
+}