Split off the upgrade rules of the previous release cycle.

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

@@ -0,0 +1,44 @@
+#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 RenameWormSpawner : UpdateRule
+	{
+		public override string Name { get { return "WormSpawner renamed and generalized to ActorSpawner"; } }
+		public override string Description
+		{
+			get
+			{
+				return "The D2k-specific WormSpawner trait was renamed to ActorSpawner, generalized,\n" +
+					"and moved into the common mod code. Uses of the old traits are updated to account for this.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			foreach (var spawner in actorNode.ChildrenMatching("WormSpawner"))
+				spawner.RenameKey("ActorSpawner");
+
+			foreach (var manager in actorNode.ChildrenMatching("WormManager"))
+			{
+				manager.RenameKey("ActorSpawnManager");
+				var signature = manager.LastChildMatching("WormSignature");
+				if (signature != null)
+					signature.RenameKey("Actors");
+			}
+
+			yield break;
+		}
+	}
+}