Reimplement demolition lock using conditions.

OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedDemolishLocking.cs

@@ -0,0 +1,71 @@
+#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;
+using System.Linq;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class RemovedDemolishLocking : UpdateRule
+	{
+		public override string Name { get { return "Traits are no longer automatically disabled during the Demolition countdown"; } }
+		public override string Description
+		{
+			get
+			{
+				return "Traits are no longer force-disabled during the Demolishing trait destruction countdown.\n" +
+					"This affects the Production*, Transforms, Sellable, EjectOnDeath and ToggleConditionOnOrder traits.\n" +
+					"Affected actors are listed so that conditions may be manually defined.";
+			}
+		}
+
+		static readonly string[] Traits =
+		{
+			"Production",
+			"ProductionAirdrop",
+			"ProductionFromMapEdge",
+			"ProductionParadrop",
+			"Transforms",
+			"Sellable",
+			"ToggleConditionOnOrder",
+			"EjectOnDeath"
+		};
+
+		readonly Dictionary<string, List<string>> locations = new Dictionary<string, List<string>>();
+
+		public override IEnumerable<string> AfterUpdate(ModData modData)
+		{
+			if (locations.Any())
+				yield return "Review the following definitions and, if the actor is Demolishable,\n" +
+				    "define Demolishable.Condition and use this condition to disable them:\n" +
+					UpdateUtils.FormatMessageList(locations.Select(
+						kv => kv.Key + ":\n" + UpdateUtils.FormatMessageList(kv.Value)));
+
+			locations.Clear();
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			var used = new List<string>();
+			foreach (var t in Traits)
+				if (actorNode.LastChildMatching(t, includeRemovals: false) != null)
+					used.Add(t);
+
+			if (used.Any())
+			{
+				var location = "{0} ({1})".F(actorNode.Key, actorNode.Location.Filename);
+				locations[location] = used;
+			}
+
+			yield break;
+		}
+	}
+}