Use MakeAnimation for selling; Support selling non-buildings

OpenRA.Mods.RA/Sellable.cs

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+#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;
+using System.Collections.Generic;
+using OpenRA.Orders;
+using OpenRA.Traits;
+using OpenRA.Mods.RA.Render;
+using OpenRA.Mods.RA.Activities;
+
+namespace OpenRA.Mods.RA
+{
+	class SellableInfo : TraitInfo<Sellable> 
+	{
+		public readonly int RefundPercent = 50;
+	}
+	
+	class Sellable : IResolveOrder
+	{
+		public void ResolveOrder(Actor self, Order order)
+		{
+			if (order.OrderString == "Sell")
+			{
+				self.CancelActivity();
+				if (self.HasTrait<RenderBuilding>() && self.Info.Traits.Get<RenderBuildingInfo>().HasMakeAnimation)
+					self.QueueActivity(new MakeAnimation(self, true));
+				
+				foreach( var ns in self.TraitsImplementing<INotifySold>() )
+					ns.Selling( self );
+				
+				self.QueueActivity(new Sell());
+			}
+		}
+	}
+}