Add support for multiple (un)deploy sounds on GrantConditionOnDeploy

OpenRA.Mods.Common/UpdateRules/Rules/20181215/MultipleDeploySounds.cs

@@ -0,0 +1,46 @@
+#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;
+using System.Collections.Generic;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class MultipleDeploySounds : UpdateRule
+	{
+		public override string Name { get { return "'GrantConditionOnDeploy' now supports multiple (un)deploy sounds"; } }
+		public override string Description
+		{
+			get
+			{
+				return "Renamed 'DeploySound' to 'DeploySounds' and 'UndeploySound' to 'UndeploySounds'\n" +
+					"on 'GrantConditionOnDeploy'.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			var grants = actorNode.ChildrenMatching("GrantConditionOnDeploy");
+			foreach (var g in grants)
+			{
+				var deploy = g.LastChildMatching("DeploySound");
+				if (deploy != null)
+					deploy.RenameKey("DeploySounds");
+
+				var undeploy = g.LastChildMatching("UndeploySound");
+				if (undeploy != null)
+					undeploy.RenameKey("UndeploySounds");
+			}
+
+			yield break;
+		}
+	}
+}