Add BridgeHut and repair activities.

OpenRA.Mods.RA/Activities/RepairBridge.cs

@@ -0,0 +1,37 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Activities
+{
+	class RepairBridge : Activity
+	{
+		Target target;
+
+		public RepairBridge(Actor target) { this.target = Target.FromActor(target); }
+
+		public override Activity Tick(Actor self)
+		{
+			if (IsCanceled || !target.IsValid)
+				return NextActivity;
+
+			var hut = target.Actor.Trait<BridgeHut>();
+			if (hut.BridgeDamageState == DamageState.Undamaged)
+				return NextActivity;
+
+			hut.Repair(self);
+			self.Destroy();
+
+			return this;
+		}
+	}
+}