infantry squads; a bit tight at the moment.

OpenRa.Game/Traits/Util.cs

@@ -2,6 +2,8 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using IjwFramework.Types;
+using OpenRa.Game.Graphics;
 
 namespace OpenRa.Game.Traits
 {
@@ -88,5 +90,11 @@ namespace OpenRa.Game.Traits
 			return (RotateVectorByFacing(new float2(offset[0], offset[1]), quantizedFacing, .7f) + GetRecoil(self, recoil));
 		}
 
+		public static Pair<Sprite, float2> Centered(Sprite s, float2 location)
+		{
+			var loc = location - 0.5f * s.size;
+			return Pair.New(s, loc.Round());
+		}
+
 	}
 }