OpenSim.Region.Framework.Scenes.ScenePresence.PhysicsCollisionUpdate C# (CSharp) Method

        private void PhysicsCollisionUpdate(EventArgs e)
        {
            if (e == null)
                return;

            //if ((Math.Abs(Velocity.X) > 0.1e-9f) || (Math.Abs(Velocity.Y) > 0.1e-9f))
            // The Physics Scene will send updates every 500 ms grep: m_physicsActor.SubscribeEvents(
            // as of this comment the interval is set in AddToPhysicalScene
            if (Animator!=null)
                Animator.UpdateMovementAnimations();

            CollisionEventUpdate collisionData = (CollisionEventUpdate)e;
            Dictionary<uint, ContactPoint> coldata = collisionData.m_objCollisionList;

            CollisionPlane = Vector4.UnitW;

            if (coldata.Count != 0 && Animator != null)
            {
                switch (Animator.CurrentMovementAnimation)
                {
                    case "STAND":
                    case "WALK":
                    case "RUN":
                    case "CROUCH":
                    case "CROUCHWALK":
                        {
                            ContactPoint lowest;
                            lowest.SurfaceNormal = Vector3.Zero;
                            lowest.Position = Vector3.Zero;
                            lowest.Position.Z = Single.NaN;

                            foreach (ContactPoint contact in coldata.Values)
                            {
                                if (Single.IsNaN(lowest.Position.Z) || contact.Position.Z < lowest.Position.Z)
                                {
                                    lowest = contact;
                                }
                            }

                            CollisionPlane = new Vector4(-lowest.SurfaceNormal, -Vector3.Dot(lowest.Position, lowest.SurfaceNormal));
                        }
                        break;
                }
            }

            if (m_invulnerable)
                return;
            
            float starthealth = Health;
            uint killerObj = 0;
            foreach (uint localid in coldata.Keys)
            {
                SceneObjectPart part = Scene.GetSceneObjectPart(localid);

                if (part != null && part.ParentGroup.Damage != -1.0f)
                    Health -= part.ParentGroup.Damage;
                else
                {
                    if (coldata[localid].PenetrationDepth >= 0.10f)
                        Health -= coldata[localid].PenetrationDepth * 5.0f;
                }

                if (Health <= 0.0f)
                {
                    if (localid != 0)
                        killerObj = localid;
                }
                //m_log.Debug("[AVATAR]: Collision with localid: " + localid.ToString() + " at depth: " + coldata[localid].ToString());
            }
            //Health = 100;
            if (!m_invulnerable)
            {
                if (starthealth != Health)
                {
                    ControllingClient.SendHealth(Health);
                }
                if (m_health <= 0)
                    m_scene.EventManager.TriggerAvatarKill(killerObj, this);
            }
        }