Beginnings of building power tracking

OpenRa.Game/Traits/Building.cs

@@ -2,10 +2,11 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using OpenRa.Game.GameRules;
 
 namespace OpenRa.Game.Traits
 {
-	class Building : ITick
+	class Building : ITick, INotifyBuildComplete
 	{
 		public Building(Actor self)
 		{
@@ -19,5 +20,13 @@ namespace OpenRa.Game.Traits
 
 			first = false;
 		}
+
+		public void BuildingComplete(Actor self)
+		{
+			UnitInfo.BuildingInfo bi = self.unitInfo as UnitInfo.BuildingInfo;
+			if (bi == null) return;
+
+			self.Owner.Power += bi.Power;
+		}
 	}
 }