move Building et al into Mods/

OpenRA.Mods.RA/Buildings/RequiresPower.cs

@@ -0,0 +1,33 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 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 LICENSE.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Buildings
+{
+	class RequiresPowerInfo : ITraitInfo
+	{
+		public object Create(ActorInitializer init) { return new RequiresPower(init.self); }
+	}
+
+	class RequiresPower : IDisable
+	{
+		readonly PowerManager power;
+		public RequiresPower( Actor self )
+		{
+			power = self.Owner.PlayerActor.Trait<PowerManager>();
+		}
+
+		public bool Disabled
+		{
+			get { return power.PowerProvided < power.PowerDrained; }
+		}
+	}
+}