Add an update rule adding ShakeOnDeath to bridges

OpenRA.Mods.Common/UpdateRules/Rules/AddShakeToBridge.cs

@@ -0,0 +1,47 @@
+#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 AddShakeToBridge : UpdateRule
+	{
+		public override string Name { get { return "Screen shaking was removed from dying bridges."; } }
+		public override string Description
+		{
+			get
+			{
+				return "'Bridges' (and 'GroundLevelBridges') no longer shake the screen on their own.\n" +
+					"The 'ShakeOnDeath' trait is to be used instead.";
+			}
+		}
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			if (actorNode.ChildrenMatching("Bridge").Any())
+				AddShakeNode(actorNode);
+			else if (actorNode.ChildrenMatching("GroundLevelBridge").Any())
+				AddShakeNode(actorNode);
+
+			yield break;
+		}
+
+		void AddShakeNode(MiniYamlNode actorNode)
+		{
+			var shake = new MiniYamlNode("ShakeOnDeath", "");
+			shake.AddNode("Duration", "15");
+			shake.AddNode("Intensity", "6");
+			actorNode.AddNode(shake);
+		}
+	}
+}