Extract auto-selection-size into its own interface.

OpenRA.Game/Actor.cs

@@ -82,10 +82,7 @@ namespace OpenRA
 				if (si != null && si.Bounds != null)
 					return new int2(si.Bounds[0], si.Bounds[1]);
 
-				// auto size from render
-				var firstSprite = TraitsImplementing<IRender>().SelectMany(ApplyIRender).FirstOrDefault();
-				if (firstSprite.Sprite == null) return int2.Zero;
-				return (firstSprite.Sprite.size * firstSprite.Scale).ToInt2();
+				return TraitsImplementing<IAutoSelectionSize>().Select(x => x.SelectionSize(this)).FirstOrDefault();
 			});
 
 			if (this.HasTrait<RevealsShroud>())
@@ -95,7 +92,6 @@ namespace OpenRA
 					range = this.Trait<RevealsShroud>().RevealRange,
 					vis = Shroud.GetVisOrigins(this).ToArray()
 				};
-					
 			}
 			
 			ApplyIRender = x => x.Render(this);

OpenRA.Game/Traits/Render/RenderSimple.cs

@@ -10,6 +10,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using OpenRA.Graphics;
 
 namespace OpenRA.Traits
@@ -32,7 +33,7 @@ namespace OpenRA.Traits
 		}
 	}
 
-	public class RenderSimple : IRender, ITick
+	public class RenderSimple : IRender, IAutoSelectionSize, ITick
 	{
 		public Dictionary<string, AnimationWithOffset> anims = new Dictionary<string, AnimationWithOffset>();
 
@@ -94,6 +95,14 @@ namespace OpenRA.Traits
 				}
 		}
 
+		public int2 SelectionSize(Actor self)
+		{
+			return anims.Values.Where(b => (b.DisableFunc == null || !b.DisableFunc())
+			                                && b.Animation.CurrentSequence != null)
+				.Select(a => (a.Animation.Image.size*Info.Scale).ToInt2())
+				.FirstOrDefault();
+		}
+
 		public virtual void Tick(Actor self)
 		{
 			foreach (var a in anims.Values)

OpenRA.Game/Traits/TraitsInterfaces.cs

@@ -35,6 +35,7 @@ namespace OpenRA.Traits
 
 	public interface ITick { void Tick(Actor self); }
 	public interface IRender { IEnumerable<Renderable> Render(Actor self); }
+	public interface IAutoSelectionSize { int2 SelectionSize(Actor self); }
 
 	public interface IIssueOrder
 	{