exclusive force fire on husks and bridges

OpenRA.Mods.RA/Attack/AttackBase.cs

@@ -199,6 +199,9 @@ namespace OpenRA.Mods.RA
 				if (modifiers.HasModifier(TargetModifiers.ForceMove))
 					return false;
 
+				if (target.RequiresForceFire)
+					return false;
+
 				var targetableRelationship = negativeDamage ? Stance.Ally : Stance.Enemy;
 
 				var owner = target.Type == TargetType.FrozenActor ? target.FrozenActor.Owner : target.Actor.Owner;

OpenRA.Mods.RA/TargetableBuilding.cs

@@ -18,8 +18,10 @@ namespace OpenRA.Mods.RA
 	public class TargetableBuildingInfo : ITraitInfo, ITargetableInfo, Requires<BuildingInfo>
 	{
 		public readonly string[] TargetTypes = { };
-
 		public string[] GetTargetTypes() { return TargetTypes; }
+
+		public bool RequiresForceFire = false;
+
 		public object Create(ActorInitializer init) { return new TargetableBuilding(init.self, this); }
 	}
 
@@ -41,5 +43,7 @@ namespace OpenRA.Mods.RA
 		{
 			return building.OccupiedCells().Select(c => c.First.CenterPosition);
 		}
+
+		public bool RequiresForceFire { get { return info.RequiresForceFire; } }
 	}
 }

OpenRA.Mods.RA/TargetableUnit.cs

@@ -16,8 +16,10 @@ namespace OpenRA.Mods.RA
 	public class TargetableUnitInfo : ITraitInfo, ITargetableInfo
 	{
 		public readonly string[] TargetTypes = { };
-
 		public string[] GetTargetTypes() { return TargetTypes; }
+
+		public bool RequiresForceFire = false;
+
 		public virtual object Create(ActorInitializer init) { return new TargetableUnit(init.self, this); }
 	}
 
@@ -46,5 +48,7 @@ namespace OpenRA.Mods.RA
 		{
 			yield return self.CenterPosition;
 		}
+
+		public bool RequiresForceFire { get { return info.RequiresForceFire; } }
 	}
 }