1 files changed, 10 insertions, 1 deletions

diff --git a/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs b/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs
index ddfdea4..11638d7 100644
--- a/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs
+++ b/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs
@@ -1064,7 +1064,7 @@ namespace OpenSim.Region.Physics.OdePlugin
             obj2LocalID = 0;
             bool p1events = p1.SubscribedEvents();
             bool p2events = p2.SubscribedEvents();
-
+           
             if (p1.IsVolumeDtc)
                 p2events = false;
             if (p2.IsVolumeDtc)
@@ -1073,6 +1073,15 @@ namespace OpenSim.Region.Physics.OdePlugin
             if (!(p2events || p1events))
                 return;
 
+            Vector3 vel = Vector3.Zero;
+            if (p2 != null && p2.IsPhysical)
+                vel = p2.Velocity;
+
+            if (p1 != null && p1.IsPhysical)
+                vel -= p1.Velocity;
+
+            contact.RelativeSpeed = Vector3.Dot(vel, contact.SurfaceNormal);
+             
             switch ((ActorTypes)p1.PhysicsActorType)
                 {
                 case ActorTypes.Agent: