Remove RepairBuildings from Aircraft

Require them to use Repairable trait instead.

OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveRepairBuildingsFromAircraft.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;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class RemoveRepairBuildingsFromAircraft : UpdateRule
+	{
+		public override string Name { get { return "Removed RepairBuildings from Aircraft"; } }
+		public override string Description
+		{
+			get
+			{
+				return "Removed RepairBuildings from Aircraft in favor of using Repairable instead.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			// Aircraft isn't conditional or otherwise supports multiple traits, so LastChildMatching is fine.
+			var aircraftNode = actorNode.LastChildMatching("Aircraft");
+			if (aircraftNode != null)
+			{
+				var repairBuildings = aircraftNode.LastChildMatching("RepairBuildings");
+				if (repairBuildings != null)
+				{
+					var repariableNode = new MiniYamlNode("Repairable", "");
+					repairBuildings.MoveAndRenameNode(aircraftNode, repariableNode, "RepairBuildings");
+
+					var voice = aircraftNode.LastChildMatching("Voice");
+					if (voice != null)
+						repariableNode.AddNode(voice);
+
+					actorNode.AddNode(repariableNode);
+				}
+			}
+
+			yield break;
+		}
+	}
+}