Specify interaction bounds relative to the mod tile size.

OpenRA.Mods.Common/UpdateRules/Rules/20201213/ConvertBoundsToWDist.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2021 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 ConvertBoundsToWDist : UpdateRule
+	{
+		public override string Name => "Convert Interactable and Selection bounds from pixels to WDist.";
+
+		public override string Description =>
+			"The Bounds and DecorationBounds fields on Interactable and Selectable have been converted from pixels to WDist.\n" +
+			"All bounds must be scaled by 1024 (Rectangular map grid) or 1448 (Isometric map grid) divided by your mod tile size.";
+
+		readonly string[] traits = { "Interactable", "Selectable", "IsometricSelectable" };
+		readonly string[] fields = { "Bounds", "DecorationBounds" };
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			var grid = modData.Manifest.Get<MapGrid>();
+			var tileSize = grid.TileSize;
+			var tileScale = grid.Type == MapGridType.RectangularIsometric ? 1448 : 1024;
+
+			foreach (var trait in traits)
+			{
+				foreach (var traitNode in actorNode.ChildrenMatching(trait))
+				{
+					foreach (var field in fields)
+					{
+						foreach (var fieldNode in traitNode.ChildrenMatching(field))
+						{
+							var value = fieldNode.NodeValue<int[]>();
+							for (var i = 0; i < value.Length; i++)
+								value[i] = value[i] * tileScale / (i % 2 == 1 ? tileSize.Height : tileSize.Width);
+
+							fieldNode.ReplaceValue(FieldSaver.FormatValue(value));
+						}
+					}
+				}
+			}
+
+			yield break;
+		}
+	}
+}