Generalize RallyPointInfo.Offset to support arbitrary length paths.

OpenRA.Mods.Common/UpdateRules/Rules/20191117/RenameRallyPointPath.cs

@@ -0,0 +1,35 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2020 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
+{
+	class RenameRallyPointPath : UpdateRule
+	{
+		public override string Name { get { return "Renamed RallyPoint Offset to Path"; } }
+		public override string Description
+		{
+			get
+			{
+				return "The RallyPoint Offset property has been renamed to Path and now accepts multiple (or no) values.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			foreach (var rp in actorNode.ChildrenMatching("RallyPoint"))
+				rp.RenameChildrenMatching("Offset", "Path");
+
+			yield break;
+		}
+	}
+}

OpenRA.Mods.Common/UpdateRules/UpdatePath.cs

@@ -98,6 +98,7 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new ReformatChromeProvider(),
 				new RenameSpins(),
 				new CreateScreenShakeWarhead(),
+				new RenameRallyPointPath(),
 			})
 		};