hacked in selling to F3

OpenRa.Game/Traits/Activities/Sell.cs

@@ -18,7 +18,11 @@ namespace OpenRa.Game.Traits.Activities
 
 			self.Owner.GiveCash((int)refund);
 			self.Health = 0;
+			foreach (var ns in self.traits.WithInterface<INotifySold>())
+				ns.Sold(self);
 			Game.world.Remove(self);
+
+			// todo: give dudes
 		}
 
 		public IActivity Tick(Actor self)

OpenRa.Game/Traits/RenderBuilding.cs

@@ -5,7 +5,7 @@ using OpenRa.Game.Effects;
 
 namespace OpenRa.Game.Traits
 {
-	class RenderBuilding : RenderSimple, INotifyDamage
+	class RenderBuilding : RenderSimple, INotifyDamage, INotifySold
 	{
 		const int SmallBibStart = 1;
 		const int LargeBibStart = 5;
@@ -88,5 +88,7 @@ namespace OpenRa.Game.Traits
 					break;
 			}
 		}
+
+		public void Sold(Actor self) { DoBib(self, true); }
 	}
 }

OpenRa.Game/Traits/TraitsInterfaces.cs

@@ -13,6 +13,7 @@ namespace OpenRa.Game.Traits
 	
 	interface ITick { void Tick(Actor self); }
 	interface IRender { IEnumerable<Renderable> Render(Actor self); }
+	interface INotifySold { void Sold(Actor self); }
 	interface INotifyDamage { void Damaged(Actor self, AttackInfo e); }
 	interface INotifyBuildComplete { void BuildingComplete (Actor self); }
 	interface INotifyProduction { void UnitProduced(Actor self, Actor other); }