--- a/net/minecraft/util/math/RayTraceResult.java
+++ b/net/minecraft/util/math/RayTraceResult.java
@@ -5,7 +5,12 @@
 
 public abstract class RayTraceResult {
    protected final Vector3d field_72307_f;
+   /** Used to determine what sub-segment is hit */
+   public int subHit = -1;
 
+   /** Used to add extra hit info */
+   public Object hitInfo = null;
+
    protected RayTraceResult(Vector3d p_i51183_1_) {
       this.field_72307_f = p_i51183_1_;
    }
