Add TargetableOffsets to HitShape

And remove ITargetablePositions from Building.
Also, added UseFootprintOffsets to replicate the old Building behavior for easier setup of TargetablePositions for buildings.

OpenRA.Game/Traits/Target.cs

@@ -145,12 +145,11 @@ namespace OpenRA.Traits
 						if (!actor.Targetables.Any(Exts.IsTraitEnabled))
 							return new[] { actor.CenterPosition };
 
-						var targetablePositions = actor.TraitOrDefault<ITargetablePositions>();
-						if (targetablePositions != null)
+						var targetablePositions = actor.TraitsImplementing<ITargetablePositions>().Where(Exts.IsTraitEnabled);
+						if (targetablePositions.Any())
 						{
-							var positions = targetablePositions.TargetablePositions(actor);
-							if (positions.Any())
-								return positions;
+							var target = this;
+							return targetablePositions.SelectMany(tp => tp.TargetablePositions(target.actor));
 						}
 
 						return new[] { actor.CenterPosition };

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

@@ -135,7 +135,7 @@ namespace OpenRA.Mods.Common.Traits
 		}
 	}
 
-	public class Building : IOccupySpace, INotifySold, INotifyTransform, ISync, INotifyCreated, INotifyAddedToWorld, INotifyRemovedFromWorld, ITargetablePositions
+	public class Building : IOccupySpace, INotifySold, INotifyTransform, ISync, INotifyCreated, INotifyAddedToWorld, INotifyRemovedFromWorld
 	{
 		public readonly BuildingInfo Info;
 		public bool BuildComplete { get; private set; }
@@ -143,6 +143,8 @@ namespace OpenRA.Mods.Common.Traits
 		readonly Actor self;
 		public readonly bool SkipMakeAnimation;
 
+		Pair<CPos, SubCell>[] occupiedCells;
+
 		// Shared activity lock: undeploy, sell, capture, etc.
 		[Sync] public bool Locked = true;
 
@@ -173,14 +175,8 @@ namespace OpenRA.Mods.Common.Traits
 			SkipMakeAnimation = init.Contains<SkipMakeAnimsInit>();
 		}
 
-		Pair<CPos, SubCell>[] occupiedCells;
 		public IEnumerable<Pair<CPos, SubCell>> OccupiedCells() { return occupiedCells; }
 
-		public IEnumerable<WPos> TargetablePositions(Actor self)
-		{
-			return OccupiedCells().Select(c => self.World.Map.CenterOfCell(c.First));
-		}
-
 		void INotifyCreated.Created(Actor self)
 		{
 			if (SkipMakeAnimation || !self.Info.HasTraitInfo<WithMakeAnimationInfo>())

OpenRA.Mods.Common/Traits/CombatDebugOverlay.cs

@@ -36,7 +36,6 @@ namespace OpenRA.Mods.Common.Traits
 
 		HitShape[] shapes;
 		IBlocksProjectiles[] allBlockers;
-		ITargetablePositions[] targetablePositions;
 
 		public CombatDebugOverlay(Actor self)
 		{
@@ -51,7 +50,6 @@ namespace OpenRA.Mods.Common.Traits
 		{
 			shapes = self.TraitsImplementing<HitShape>().ToArray();
 			allBlockers = self.TraitsImplementing<IBlocksProjectiles>().ToArray();
-			targetablePositions = self.TraitsImplementing<ITargetablePositions>().ToArray();
 		}
 
 		void IRenderAboveWorld.RenderAboveWorld(Actor self, WorldRenderer wr)
@@ -79,8 +77,7 @@ namespace OpenRA.Mods.Common.Traits
 				s.Info.Type.DrawCombatOverlay(wr, wcr, self);
 
 			var tc = Color.Lime;
-			var enabledPositions = targetablePositions.Where(Exts.IsTraitEnabled);
-			var positions = enabledPositions.SelectMany(tp => tp.TargetablePositions(self));
+			var positions = activeShapes.SelectMany(tp => tp.TargetablePositions(self));
 			foreach (var p in positions)
 			{
 				var center = wr.Screen3DPosition(p);

OpenRA.Mods.Common/Traits/HitShape.cs

@@ -16,9 +16,15 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Traits
 {
-	[Desc("Shape of actor for damage calculations.")]
-	public class HitShapeInfo : ConditionalTraitInfo
+	[Desc("Shape of actor for targeting and damage calculations.")]
+	public class HitShapeInfo : ConditionalTraitInfo, Requires<BodyOrientationInfo>
 	{
+		[Desc("Create a targetable position for each offset listed here (relative to CenterPosition).")]
+		public readonly WVec[] TargetableOffsets = { WVec.Zero };
+
+		[Desc("Create a targetable position at the center of each occupied cell. Stacks with TargetableOffsets.")]
+		public readonly bool UseOccupiedCellsOffsets = false;
+
 		[FieldLoader.LoadUsing("LoadShape")]
 		public readonly IHitShape Type;
 
@@ -51,9 +57,36 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new HitShape(init.Self, this); }
 	}
 
-	public class HitShape : ConditionalTrait<HitShapeInfo>
+	public class HitShape : ConditionalTrait<HitShapeInfo>, ITargetablePositions
 	{
+		BodyOrientation orientation;
+		IOccupySpace occupy;
+
 		public HitShape(Actor self, HitShapeInfo info)
 			: base(info) { }
+
+		protected override void Created(Actor self)
+		{
+			orientation = self.Trait<BodyOrientation>();
+			occupy = self.TraitOrDefault<IOccupySpace>();
+
+			base.Created(self);
+		}
+
+		public IEnumerable<WPos> TargetablePositions(Actor self)
+		{
+			if (IsTraitDisabled)
+				yield break;
+
+			if (Info.UseOccupiedCellsOffsets && occupy != null)
+				foreach (var c in occupy.OccupiedCells())
+					yield return self.World.Map.CenterOfCell(c.First);
+
+			foreach (var o in Info.TargetableOffsets)
+			{
+				var offset = orientation.LocalToWorld(o.Rotate(orientation.QuantizeOrientation(self, self.Orientation)));
+				yield return self.CenterPosition + offset;
+			}
+		}
 	}
 }

OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs

@@ -699,6 +699,15 @@ namespace OpenRA.Mods.Common.UtilityCommands
 						else
 							node.Value.Nodes.Add(hitShapeNode);
 					}
+
+					// Moved ITargetablePositions from Building to HitShape
+					var building = node.Value.Nodes.FirstOrDefault(n => n.Key == "Building");
+					var hitShape = node.Value.Nodes.FirstOrDefault(n => n.Key == "HitShape");
+					if (building != null && hitShape == null)
+					{
+						hitShapeNode.Value.Nodes.Add(new MiniYamlNode("UseOccupiedCellsOffsets", "true"));
+						node.Value.Nodes.Add(hitShapeNode);
+					}
 				}
 
 				UpgradeActorRules(modData, engineVersion, ref node.Value.Nodes, node, depth + 1);

mods/cnc/rules/defaults.yaml

@@ -565,6 +565,8 @@
 		Priority: 3
 	Targetable:
 		TargetTypes: Ground, C4, Structure
+	HitShape:
+		UseOccupiedCellsOffsets: true
 	Armor:
 		Type: Wood
 	Building:
@@ -878,6 +880,7 @@
 		DamagedSounds: xplos.aud
 		DestroyedSounds: xplobig4.aud
 	ScriptTriggers:
+	BodyOrientation:
 	HitShape:
 
 ^Crate:

mods/d2k/rules/defaults.yaml

@@ -336,6 +336,8 @@
 		VisibilityType: CenterPosition
 	Targetable:
 		TargetTypes: Ground, C4, Structure
+	HitShape:
+		UseOccupiedCellsOffsets: true
 	Building:
 		Dimensions: 1,1
 		Footprint: x

mods/ra/rules/defaults.yaml

@@ -497,6 +497,8 @@
 		Priority: 3
 	Targetable:
 		TargetTypes: Ground, C4, DetonateAttack, Structure
+	HitShape:
+		UseOccupiedCellsOffsets: true
 	Building:
 		Dimensions: 1,1
 		Footprint: x
@@ -853,6 +855,7 @@
 		Type: Concrete
 	AutoTargetIgnore:
 	ScriptTriggers:
+	BodyOrientation:
 	HitShape:
 
 ^Rock:

mods/ts/rules/defaults.yaml

@@ -135,6 +135,8 @@
 		Priority: 3
 	Targetable:
 		TargetTypes: Ground, Building, C4
+	HitShape:
+		UseOccupiedCellsOffsets: true
 	Building:
 		Dimensions: 1,1
 		Footprint: x