From a7ece8c688a44c0d0b05162dbb1e98a1ea4e95ff Mon Sep 17 00:00:00 2001
From: UbitUmarov <ajlduarte@sapo.pt>
Date: Sat, 19 May 2012 00:17:37 +0100
Subject: [PATCH] add colliders relative velocity projected in collision
 direction to collisions report information.

---
 OpenSim/Region/Physics/Manager/PhysicsActor.cs       |  2 ++
 OpenSim/Region/Physics/UbitOdePlugin/ODECharacter.cs |  1 +
 OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs     | 11 ++++++++++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/OpenSim/Region/Physics/Manager/PhysicsActor.cs b/OpenSim/Region/Physics/Manager/PhysicsActor.cs
index b66d7f1152..fb90887f6d 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsActor.cs
+++ b/OpenSim/Region/Physics/Manager/PhysicsActor.cs
@@ -59,12 +59,14 @@ namespace OpenSim.Region.Physics.Manager
         public Vector3 Position;
         public Vector3 SurfaceNormal;
         public float PenetrationDepth;
+        public float RelativeSpeed;
 
         public ContactPoint(Vector3 position, Vector3 surfaceNormal, float penetrationDepth)
         {
             Position = position;
             SurfaceNormal = surfaceNormal;
             PenetrationDepth = penetrationDepth;
+            RelativeSpeed = 0f; // for now let this one be set explicity
         }
     }
 
diff --git a/OpenSim/Region/Physics/UbitOdePlugin/ODECharacter.cs b/OpenSim/Region/Physics/UbitOdePlugin/ODECharacter.cs
index b0711d786d..bfff3d40af 100644
--- a/OpenSim/Region/Physics/UbitOdePlugin/ODECharacter.cs
+++ b/OpenSim/Region/Physics/UbitOdePlugin/ODECharacter.cs
@@ -903,6 +903,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                         contact.SurfaceNormal.X = 0f;
                         contact.SurfaceNormal.Y = 0f;
                         contact.SurfaceNormal.Z = -1f;
+                        contact.RelativeSpeed = -vel.Z;
                         AddCollisionEvent(0, contact);
 
                         vec.Z *= 0.5f;
diff --git a/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs b/OpenSim/Region/Physics/UbitOdePlugin/OdeScene.cs
index ddfdea4f6c..11638d7ac6 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: