3 files changed, 46 insertions, 15 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index 40ebed1..bb76717 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -11631,8 +11631,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                                     udata.scale = new Vector3(block.Data, 0);
 
-                                    //                                    udata.change = ObjectChangeType.groupS;
-                                    udata.change = ObjectChangeType.primS; // to conform to current SL
+                                    udata.change = ObjectChangeType.groupS;
                                     updatehandler(localId, udata, this);
 
                                     break;
@@ -11643,8 +11642,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                                     udata.position = new Vector3(block.Data, 0);
                                     udata.scale = new Vector3(block.Data, 12);
 
-                                    //                                    udata.change = ObjectChangeType.groupPS;
-                                    udata.change = ObjectChangeType.primPS; // to conform to current SL
+                                    udata.change = ObjectChangeType.groupPS;
                                     updatehandler(localId, udata, this);
                                     break;
 
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index 982913a..debb164 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -1276,9 +1276,36 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     if (m_parentScene.Permissions.CanEditObject(grp.UUID, remoteClient.AgentId))
                     {
+                        // These two are exceptions SL makes in the interpretation
+                        // of the change flags. Must check them here because otherwise
+                        // the group flag (see below) would be lost
+                        if (data.change == ObjectChangeType.groupS)
+                            data.change = ObjectChangeType.primS;
+                        if (data.change == ObjectChangeType.groupPS)
+                            data.change = ObjectChangeType.primPS;
                         part.StoreUndoState(data.change); // lets test only saving what we changed
                         grp.doChangeObject(part, (ObjectChangeData)data);
                     }
+                    else
+                    {
+                        // Is this any kind of group operation?
+                        if ((data.change & ObjectChangeType.Group) != 0)
+                        {
+                            // Is a move and/or rotation requested?
+                            if ((data.change & (ObjectChangeType.Position | ObjectChangeType.Rotation)) != 0)
+                            {
+                                // Are we allowed to move it?
+                                if (m_parentScene.Permissions.CanMoveObject(grp.UUID, remoteClient.AgentId))
+                                {
+                                    // Strip all but move and rotation from request
+                                    data.change &= (ObjectChangeType.Group | ObjectChangeType.Position | ObjectChangeType.Rotation);
+
+                                    part.StoreUndoState(data.change);
+                                    grp.doChangeObject(part, (ObjectChangeData)data);
+                                }
+                            }
+                        }
+                    }
                 }
             }
         }
diff --git a/OpenSim/Region/Physics/UbitOdePlugin/ODEDynamics.cs b/OpenSim/Region/Physics/UbitOdePlugin/ODEDynamics.cs
index 9fefc4e..8f2feba 100644
--- a/OpenSim/Region/Physics/UbitOdePlugin/ODEDynamics.cs
+++ b/OpenSim/Region/Physics/UbitOdePlugin/ODEDynamics.cs
@@ -118,6 +118,7 @@ namespace OpenSim.Region.Physics.OdePlugin
 
         // auxiliar
         private float m_lmEfect = 0;                                            // current linear motor eficiency
+        private float m_lmDecay = 1.0f;
         private float m_amEfect = 0;                                            // current angular motor eficiency
         private float m_ffactor = 1.0f;
 
@@ -155,6 +156,7 @@ namespace OpenSim.Region.Physics.OdePlugin
 
             m_linearMotorDecayTimescale = vd.m_linearMotorDecayTimescale;
             if (m_linearMotorDecayTimescale < m_timestep) m_linearMotorDecayTimescale = m_timestep;
+            m_linearMotorDecayTimescale += 0.2f;
             m_linearMotorDecayTimescale *= m_invtimestep;
 
             m_linearMotorTimescale = vd.m_linearMotorTimescale;
@@ -208,6 +210,7 @@ namespace OpenSim.Region.Physics.OdePlugin
             m_referenceFrame = vd.m_referenceFrame;
 
             m_lmEfect = 0;
+            m_lmDecay = (1.0f - 1.0f / m_linearMotorDecayTimescale);
             m_amEfect = 0;
             m_ffactor = 1.0f;
         }
@@ -279,7 +282,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                 case Vehicle.LINEAR_MOTOR_DECAY_TIMESCALE:
                     if (pValue < m_timestep) pValue = m_timestep;
                     else if (pValue > 120) pValue = 120;
-                    m_linearMotorDecayTimescale = pValue * m_invtimestep;
+                    m_linearMotorDecayTimescale = (0.2f +pValue) * m_invtimestep;
                     break;
                 case Vehicle.LINEAR_MOTOR_TIMESCALE:
                     if (pValue < m_timestep) pValue = m_timestep;
@@ -318,9 +321,10 @@ namespace OpenSim.Region.Physics.OdePlugin
                 case Vehicle.LINEAR_MOTOR_DIRECTION:
                     m_linearMotorDirection = new Vector3(pValue, pValue, pValue);
                     len = m_linearMotorDirection.Length();
-                    if (len > 30.0f)
-                        m_linearMotorDirection *= (30.0f / len);
-                    m_lmEfect = 1.0f; // turn it on
+                    if (len > 100.0f)
+                        m_linearMotorDirection *= (100.0f / len);
+                    m_lmDecay = 1.0f - 1.0f / m_linearMotorDecayTimescale;
+                    m_lmEfect = 1.0f / m_linearMotorTimescale; // turn it on
                     m_ffactor = 0.01f;
                     if (rootPrim.Body != IntPtr.Zero && !d.BodyIsEnabled(rootPrim.Body)
                             && !rootPrim.m_isSelected && !rootPrim.m_disabled)
@@ -368,9 +372,10 @@ namespace OpenSim.Region.Physics.OdePlugin
                 case Vehicle.LINEAR_MOTOR_DIRECTION:
                     m_linearMotorDirection = new Vector3(pValue.X, pValue.Y, pValue.Z);
                     len = m_linearMotorDirection.Length();
-                    if (len > 30.0f)
-                        m_linearMotorDirection *= (30.0f / len);
-                    m_lmEfect = 1.0f; // turn it on
+                    if (len > 100.0f)
+                        m_linearMotorDirection *= (100.0f / len);
+                    m_lmDecay = 1.0f - 1.0f / m_linearMotorDecayTimescale;
+                    m_lmEfect = 1.0f / m_linearMotorTimescale; // turn it on
                     m_ffactor = 0.01f;
                     if (rootPrim.Body != IntPtr.Zero && !d.BodyIsEnabled(rootPrim.Body)
                             && !rootPrim.m_isSelected && !rootPrim.m_disabled)
@@ -603,12 +608,13 @@ namespace OpenSim.Region.Physics.OdePlugin
 //                        VehicleFlag.HOVER_GLOBAL_HEIGHT);
                     break;
             }
-
+            m_lmDecay = (1.0f - 1.0f / m_linearMotorDecayTimescale);
         }//end SetDefaultsForType
 
         internal void Stop()
         {
             m_lmEfect = 0;
+            m_lmDecay = 1.0f;
             m_amEfect = 0;
             m_ffactor = 1f;
         }
@@ -739,10 +745,10 @@ namespace OpenSim.Region.Physics.OdePlugin
             Vector3 curLocalAngVel = curAngVel * irotq; // current angular velocity in  local
 
             // linear motor
-            if (m_lmEfect > 0.01 && m_linearMotorTimescale < 1000)
+            if (m_lmEfect > 0.001 && m_linearMotorTimescale < 1000)
             {
                 tmpV = m_linearMotorDirection - curLocalVel; // velocity error
-                tmpV *= m_lmEfect / m_linearMotorTimescale; // error to correct in this timestep
+                tmpV *= m_lmEfect; // error to correct in this timestep
                 tmpV *= rotq; // to world
 
                 if ((m_flags & VehicleFlag.LIMIT_MOTOR_UP) != 0)
@@ -760,7 +766,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                     force.Y += tmpV.Y;
                     force.Z += tmpV.Z;
                 }
-                m_lmEfect *= (1.0f - 1.0f / m_linearMotorDecayTimescale);
+                m_lmEfect *= m_lmDecay;
 
                 m_ffactor = 0.01f + 1e-4f * curVel.LengthSquared();
             }