yep

PathFinding/IPlanarCollection.cs

@@ -4,7 +4,7 @@ namespace PathFinding
 {
   public interface IPlanarCollection<T> : IEnumerable<T>
   {
-    T this[int x, int y] { get; set; }
+    T this[float x, float y] { get; set; }
     int GetLength(int dimension);
   }
 }