Remove the hardcoded cloak reference from activities

OpenRA.Mods.Cnc/Activities/Infiltrate.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System.Linq;
 using OpenRA.Activities;
 using OpenRA.Mods.Cnc.Traits;
 using OpenRA.Mods.Common.Activities;
@@ -21,14 +22,14 @@ namespace OpenRA.Mods.Cnc.Activities
 	{
 		readonly Actor target;
 		readonly Infiltrates infiltrates;
-		readonly Cloak cloak;
+		readonly INotifyInfiltration[] notifiers;
 
 		public Infiltrate(Actor self, Actor target, Infiltrates infiltrate)
 			: base(self, target, infiltrate.Info.EnterBehaviour)
 		{
 			this.target = target;
 			infiltrates  = infiltrate;
-			cloak = self.TraitOrDefault<Cloak>();
+			notifiers = self.TraitsImplementing<INotifyInfiltration>().ToArray();
 		}
 
 		protected override void OnInside(Actor self)
@@ -40,8 +41,8 @@ namespace OpenRA.Mods.Cnc.Activities
 			if (!infiltrates.Info.ValidStances.HasStance(stance))
 				return;
 
-			if (cloak != null && cloak.Info.UncloakOn.HasFlag(UncloakType.Infiltrate))
+			foreach (var ini in notifiers)
-				cloak.Uncloak();
+				ini.Infiltrating(self);
 
 			foreach (var t in target.TraitsImplementing<INotifyInfiltrated>())
 				t.Infiltrated(target, self);

OpenRA.Mods.Common/Activities/Demolish.cs

@@ -26,8 +26,7 @@ namespace OpenRA.Mods.Common.Activities
 		readonly int flashesDelay;
 		readonly int flashInterval;
 		readonly int flashDuration;
-
+		readonly INotifyDemolition[] notifiers;
-		readonly Cloak cloak;
 
 		public Demolish(Actor self, Actor target, EnterBehaviour enterBehaviour, int delay,
 			int flashes, int flashesDelay, int flashInterval, int flashDuration)
@@ -35,12 +34,12 @@ namespace OpenRA.Mods.Common.Activities
 		{
 			this.target = target;
 			demolishables = target.TraitsImplementing<IDemolishable>().ToArray();
+			notifiers = self.TraitsImplementing<INotifyDemolition>().ToArray();
 			this.delay = delay;
 			this.flashes = flashes;
 			this.flashesDelay = flashesDelay;
 			this.flashInterval = flashInterval;
 			this.flashDuration = flashDuration;
-			cloak = self.TraitOrDefault<Cloak>();
 		}
 
 		protected override bool CanReserve(Actor self)
@@ -55,12 +54,8 @@ namespace OpenRA.Mods.Common.Activities
 				if (target.IsDead)
 					return;
 
-				if (cloak != null && cloak.Info.UncloakOn.HasFlag(UncloakType.Demolish))
+				foreach (var ind in notifiers)
-					cloak.Uncloak();
+					ind.Demolishing(self);
-
-				var building = target.TraitOrDefault<Building>();
-				if (building != null)
-					building.Lock();
 
 				for (var f = 0; f < flashes; f++)
 					w.Add(new DelayedAction(flashesDelay + f * flashInterval, () =>

OpenRA.Mods.Common/Activities/UnloadCargo.cs

@@ -23,14 +23,14 @@ namespace OpenRA.Mods.Common.Activities
 	{
 		readonly Actor self;
 		readonly Cargo cargo;
-		readonly Cloak[] cloaks;
+		readonly INotifyUnload[] notifiers;
 		readonly bool unloadAll;
 
 		public UnloadCargo(Actor self, bool unloadAll)
 		{
 			this.self = self;
 			cargo = self.Trait<Cargo>();
-			cloaks = self.TraitsImplementing<Cloak>().ToArray();
+			notifiers = self.TraitsImplementing<INotifyUnload>().ToArray();
 			this.unloadAll = unloadAll;
 		}
 
@@ -60,9 +60,8 @@ namespace OpenRA.Mods.Common.Activities
 			if (IsCanceled || cargo.IsEmpty(self))
 				return NextActivity;
 
-			foreach (var cloak in cloaks)
+			foreach (var inu in notifiers)
-				if (cloak.Info.UncloakOn.HasFlag(UncloakType.Unload))
+				inu.Unloading(self);
-					cloak.Uncloak();
 
 			var actor = cargo.Peek(self);
 			var spawn = self.CenterPosition;

OpenRA.Mods.Common/Traits/Buildings/Building.cs

@@ -237,7 +237,7 @@ namespace OpenRA.Mods.Common.Traits
 	}
 
 	public class Building : IOccupySpace, ITargetableCells, INotifySold, INotifyTransform, ISync, INotifyCreated,
-		INotifyAddedToWorld, INotifyRemovedFromWorld
+		INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyDemolition
 	{
 		public readonly bool SkipMakeAnimation;
 		public readonly BuildingInfo Info;
@@ -331,6 +331,11 @@ namespace OpenRA.Mods.Common.Traits
 				notify.BuildingComplete(self);
 		}
 
+		void INotifyDemolition.Demolishing(Actor self)
+		{
+			Lock();
+		}
+
 		void INotifySold.Selling(Actor self)
 		{
 			if (Info.RemoveSmudgesOnSell)

OpenRA.Mods.Common/Traits/Cloak.cs

@@ -62,7 +62,7 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new Cloak(this); }
 	}
 
-	public class Cloak : ConditionalTrait<CloakInfo>, IRenderModifier, INotifyDamage,
+	public class Cloak : ConditionalTrait<CloakInfo>, IRenderModifier, INotifyDamage, INotifyUnload, INotifyDemolition, INotifyInfiltration,
 		INotifyAttack, ITick, IVisibilityModifier, IRadarColorModifier, INotifyCreated, INotifyHarvesterAction
 	{
 		[Sync] int remainingTime;
@@ -212,5 +212,23 @@ namespace OpenRA.Mods.Common.Traits
 		{
 			isDocking = false;
 		}
+
+		void INotifyUnload.Unloading(Actor self)
+		{
+			if (Info.UncloakOn.HasFlag(UncloakType.Unload))
+				Uncloak();
+		}
+
+		void INotifyDemolition.Demolishing(Actor self)
+		{
+			if (Info.UncloakOn.HasFlag(UncloakType.Demolish))
+				Uncloak();
+		}
+
+		void INotifyInfiltration.Infiltrating(Actor self)
+		{
+			if (Info.UncloakOn.HasFlag(UncloakType.Infiltrate))
+				Uncloak();
+		}
 	}
 }

OpenRA.Mods.Common/TraitsInterfaces.cs

@@ -148,6 +148,24 @@ namespace OpenRA.Mods.Common.Traits
 		void Undocked();
 	}
 
+	[RequireExplicitImplementation]
+	public interface INotifyUnload
+	{
+		void Unloading(Actor self);
+	}
+
+	[RequireExplicitImplementation]
+	public interface INotifyDemolition
+	{
+		void Demolishing(Actor self);
+	}
+
+	[RequireExplicitImplementation]
+	public interface INotifyInfiltration
+	{
+		void Infiltrating(Actor self);
+	}
+
 	public interface ITechTreePrerequisiteInfo : ITraitInfo { }
 	public interface ITechTreePrerequisite
 	{