diff --git a/OpenSim/Region/Physics/Manager/PhysicsActor.cs b/OpenSim/Region/Physics/Manager/PhysicsActor.cs
index 0587054c23..e1a68be346 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsActor.cs
+++ b/OpenSim/Region/Physics/Manager/PhysicsActor.cs
@@ -68,6 +68,17 @@ namespace OpenSim.Region.Physics.Manager
         }
     }
 
+    public struct ContactData
+    {
+        public float mu;
+        public float bounce;
+
+        public ContactData(float _mu, float _bounce)
+        {
+            mu = _mu;
+            bounce = _bounce;
+        }
+    }
     /// <summary>
     /// Used to pass collision information to OnCollisionUpdate listeners.
     /// </summary>
@@ -143,6 +154,14 @@ namespace OpenSim.Region.Physics.Manager
             get { return new NullPhysicsActor(); }
         }
 
+
+        public virtual bool Building { get; set; }
+
+        public virtual ContactData ContactData
+        {
+            get { return new ContactData(0, 0); }
+        }
+
         public abstract bool Stopped { get; }
 
         public abstract Vector3 Size { get; set; }
diff --git a/OpenSim/Region/Physics/Manager/PhysicsScene.cs b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
index 514d9ad3e2..3db71e579b 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsScene.cs
+++ b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
@@ -225,7 +225,7 @@ namespace OpenSim.Region.Physics.Manager
         }
 
         public virtual void Combine(PhysicsScene pScene, Vector3 offset, Vector3 extents) {}
-
+        public virtual void CombineTerrain(float[] heightMap, Vector3 pOffset) {}
         public virtual void UnCombine(PhysicsScene pScene) {}
 
         /// <summary>
@@ -263,5 +263,13 @@ namespace OpenSim.Region.Physics.Manager
         {
             return new List<ContactResult>();
         }
+
+        public virtual void RaycastActor(PhysicsActor actor, Vector3 position, Vector3 direction, float length, RaycastCallback retMethod){}
+        public virtual void RaycastActor(PhysicsActor actor, Vector3 position, Vector3 direction, float length, int Count, RayCallback retMethod) { }
+        public virtual List<ContactResult> RaycastActor(PhysicsActor actor, Vector3 position, Vector3 direction, float length, int Count)
+        {
+            return new List<ContactResult>();
+        }
+
     }
 }