Extend WithSpriteBody funtionality

Move building placement range circle to PlaceBuilding, add
PauseAnimationWhenDisabled.

OpenRA.Mods.Common/Traits/Player/PlaceBuilding.cs

@@ -8,15 +8,17 @@
  */
 #endregion
 
+using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Effects;
+using OpenRA.Graphics;
 using OpenRA.Primitives;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Allows the player to execute build orders.", " Attach this to the player actor.")]
-	public class PlaceBuildingInfo : ITraitInfo
+	public class PlaceBuildingInfo : ITraitInfo, IPlaceBuildingDecoration
 	{
 		[Desc("Palette to use for rendering the placement sprite.")]
 		[PaletteReference] public readonly string Palette = "terrain";
@@ -28,6 +30,16 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string NewOptionsNotification = "NewOptions";
 
 		public object Create(ActorInitializer init) { return new PlaceBuilding(this); }
+
+		public IEnumerable<IRenderable> Render(WorldRenderer wr, World w, ActorInfo ai, WPos centerPosition)
+		{
+			if (!ai.Traits.Get<BuildingInfo>().RequiresBaseProvider)
+				yield break;
+
+			foreach (var a in w.ActorsWithTrait<BaseProvider>())
+				foreach (var r in a.Trait.RenderAfterWorld(wr))
+					yield return r;
+		}
 	}
 
 	public class PlaceBuilding : IResolveOrder