Split IPlaceBuildingPreviewGeneratorInfo from PBOG.

OpenRA.Mods.Common/UpdateRules/Rules/20190314/RemovePlaceBuildingPalettes.cs

@@ -0,0 +1,40 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 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 RemovePlaceBuildingPalettes : UpdateRule
+	{
+		public override string Name { get { return "Remove Palette and LineBuildSegmentPalette from PlaceBuilding"; } }
+		public override string Description
+		{
+			get
+			{
+				return "The Palette and LineBuildSegmentPalette fields have been moved from PlaceBuilding,\n" +
+					"to the *PlaceBuildingPreview traits.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			// Repairable isn't conditional or otherwise supports multiple traits, so LastChildMatching should be fine.
+			foreach (var placeBuilding in actorNode.ChildrenMatching("PlaceBuilding"))
+			{
+				placeBuilding.RemoveNodes("Palette");
+				placeBuilding.RemoveNodes("LineBuildSegmentPalette");
+			}
+
+			yield break;
+		}
+	}
+}

OpenRA.Mods.Common/UpdateRules/UpdatePath.cs

@@ -126,6 +126,7 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new RefactorHarvesterIdle(),
 				new SplitHarvesterSpriteBody(),
 				new RenameAttackMoveConditions(),
+				new RemovePlaceBuildingPalettes(),
 			})
 		};