10 files changed, 122 insertions, 59 deletions

diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 7361f50..7497d88 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -138,6 +138,10 @@ namespace OpenSim
         /// <param name="configSource"></param>
         public OpenSimBase(IConfigSource configSource) : base()
         {
+            // FIXME: This should be done down in ServerBase but we need to sort out and refactor the log4net
+            // XmlConfigurator calls first accross servers.
+            m_log.InfoFormat("[SERVER BASE]: Starting in {0}", m_startupDirectory);
+
             LoadConfigSettings(configSource);
         }
 
diff --git a/OpenSim/Region/CoreModules/World/Permissions/PermissionsModule.cs b/OpenSim/Region/CoreModules/World/Permissions/PermissionsModule.cs
index ddaa227..121fb2a 100644
--- a/OpenSim/Region/CoreModules/World/Permissions/PermissionsModule.cs
+++ b/OpenSim/Region/CoreModules/World/Permissions/PermissionsModule.cs
@@ -156,9 +156,8 @@ namespace OpenSim.Region.CoreModules.World.Permissions
 
         public void Initialise(IConfigSource config)
         {
-            IConfig myConfig = config.Configs["Startup"];
-
-            string permissionModules = myConfig.GetString("permissionmodules", "DefaultPermissionsModule");
+            string permissionModules = Util.GetConfigVarFromSections<string>(config, "permissionmodules",
+                new string[] { "Startup", "Permissions" }, "DefaultPermissionsModule");
 
             List<string> modules = new List<string>(permissionModules.Split(','));
 
@@ -167,26 +166,34 @@ namespace OpenSim.Region.CoreModules.World.Permissions
 
             m_Enabled = true;
 
-            m_allowGridGods = myConfig.GetBoolean("allow_grid_gods", false);
-            m_bypassPermissions = !myConfig.GetBoolean("serverside_object_permissions", true);
-            m_propagatePermissions = myConfig.GetBoolean("propagate_permissions", true);
-            m_RegionOwnerIsGod = myConfig.GetBoolean("region_owner_is_god", true);
-            m_RegionManagerIsGod = myConfig.GetBoolean("region_manager_is_god", false);
-            m_ParcelOwnerIsGod = myConfig.GetBoolean("parcel_owner_is_god", true);
-
-            m_SimpleBuildPermissions = myConfig.GetBoolean("simple_build_permissions", false);
+            m_allowGridGods = Util.GetConfigVarFromSections<bool>(config, "allow_grid_gods",
+                new string[] { "Startup", "Permissions" }, false); 
+            m_bypassPermissions = !Util.GetConfigVarFromSections<bool>(config, "serverside_object_permissions",
+                new string[] { "Startup", "Permissions" }, true); 
+            m_propagatePermissions = Util.GetConfigVarFromSections<bool>(config, "propagate_permissions",
+                new string[] { "Startup", "Permissions" }, true); 
+            m_RegionOwnerIsGod = Util.GetConfigVarFromSections<bool>(config, "region_owner_is_god",
+                new string[] { "Startup", "Permissions" }, true); 
+            m_RegionManagerIsGod = Util.GetConfigVarFromSections<bool>(config, "region_manager_is_god",
+                new string[] { "Startup", "Permissions" }, false); 
+            m_ParcelOwnerIsGod = Util.GetConfigVarFromSections<bool>(config, "parcel_owner_is_god",
+                new string[] { "Startup", "Permissions" }, true);
+
+            m_SimpleBuildPermissions = Util.GetConfigVarFromSections<bool>(config, "simple_build_permissions",
+                new string[] { "Startup", "Permissions" }, false); 
 
             m_allowedScriptCreators
-                = ParseUserSetConfigSetting(myConfig, "allowed_script_creators", m_allowedScriptCreators);
+                = ParseUserSetConfigSetting(config, "allowed_script_creators", m_allowedScriptCreators);
             m_allowedScriptEditors
-                = ParseUserSetConfigSetting(myConfig, "allowed_script_editors", m_allowedScriptEditors);
+                = ParseUserSetConfigSetting(config, "allowed_script_editors", m_allowedScriptEditors);
 
             if (m_bypassPermissions)
                 m_log.Info("[PERMISSIONS]: serverside_object_permissions = false in ini file so disabling all region service permission checks");
             else
                 m_log.Debug("[PERMISSIONS]: Enabling all region service permission checks");
 
-            string grant = myConfig.GetString("GrantLSL", "");
+            string grant = Util.GetConfigVarFromSections<string>(config, "GrantLSL",
+                new string[] { "Startup", "Permissions" }, string.Empty);
             if (grant.Length > 0)
             {
                 foreach (string uuidl in grant.Split(','))
@@ -196,7 +203,8 @@ namespace OpenSim.Region.CoreModules.World.Permissions
                 }
             }
 
-            grant = myConfig.GetString("GrantCS", "");
+            grant = Util.GetConfigVarFromSections<string>(config, "GrantCS",
+                new string[] { "Startup", "Permissions" }, string.Empty); 
             if (grant.Length > 0)
             {
                 foreach (string uuidl in grant.Split(','))
@@ -206,7 +214,8 @@ namespace OpenSim.Region.CoreModules.World.Permissions
                 }
             }
 
-            grant = myConfig.GetString("GrantVB", "");
+            grant = Util.GetConfigVarFromSections<string>(config, "GrantVB",
+                new string[] { "Startup", "Permissions" }, string.Empty);
             if (grant.Length > 0)
             {
                 foreach (string uuidl in grant.Split(','))
@@ -216,7 +225,8 @@ namespace OpenSim.Region.CoreModules.World.Permissions
                 }
             }
 
-            grant = myConfig.GetString("GrantJS", "");
+            grant = Util.GetConfigVarFromSections<string>(config, "GrantJS",
+                new string[] { "Startup", "Permissions" }, string.Empty);
             if (grant.Length > 0)
             {
                 foreach (string uuidl in grant.Split(','))
@@ -226,7 +236,8 @@ namespace OpenSim.Region.CoreModules.World.Permissions
                 }
             }
 
-            grant = myConfig.GetString("GrantYP", "");
+            grant = Util.GetConfigVarFromSections<string>(config, "GrantYP",
+                new string[] { "Startup", "Permissions" }, string.Empty);
             if (grant.Length > 0)
             {
                 foreach (string uuidl in grant.Split(','))
@@ -464,11 +475,12 @@ namespace OpenSim.Region.CoreModules.World.Permissions
         /// <param name="settingName"></param>
         /// <param name="defaultValue">The default value for this attribute</param>
         /// <returns>The parsed value</returns>
-        private static UserSet ParseUserSetConfigSetting(IConfig config, string settingName, UserSet defaultValue)
+        private static UserSet ParseUserSetConfigSetting(IConfigSource config, string settingName, UserSet defaultValue)
         {
             UserSet userSet = defaultValue;
-            
-            string rawSetting = config.GetString(settingName, defaultValue.ToString());
+
+            string rawSetting = Util.GetConfigVarFromSections<string>(config, settingName, 
+                new string[] {"Startup", "Permissions"}, defaultValue.ToString()); 
             
             // Temporary measure to allow 'gods' to be specified in config for consistency's sake.  In the long term
             // this should disappear.
diff --git a/OpenSim/Region/DataSnapshot/DataSnapshotManager.cs b/OpenSim/Region/DataSnapshot/DataSnapshotManager.cs
index 32017a8..dd48dd5 100644
--- a/OpenSim/Region/DataSnapshot/DataSnapshotManager.cs
+++ b/OpenSim/Region/DataSnapshot/DataSnapshotManager.cs
@@ -148,8 +148,6 @@ namespace OpenSim.Region.DataSnapshot
                         return;
                     }
 
-                    if (m_enabled)
-                        m_snapStore = new SnapshotStore(m_snapsDir, m_gridinfo, m_listener_port, m_hostname);
                 }
 
             }
@@ -163,8 +161,22 @@ namespace OpenSim.Region.DataSnapshot
 
             m_log.DebugFormat("[DATASNAPSHOT]: Module added to Scene {0}.", scene.RegionInfo.RegionName);
 
-            m_snapStore.AddScene(scene);
+            if (!m_servicesNotified)
+            {
+                m_hostname = scene.RegionInfo.ExternalHostName;
+                m_snapStore = new SnapshotStore(m_snapsDir, m_gridinfo, m_listener_port, m_hostname);
+
+                //Hand it the first scene, assuming that all scenes have the same BaseHTTPServer
+                new DataRequestHandler(scene, this);
+
+                if (m_dataServices != "" && m_dataServices != "noservices")
+                    NotifyDataServices(m_dataServices, "online");
+
+                m_servicesNotified = true;
+            }
+
             m_scenes.Add(scene);
+            m_snapStore.AddScene(scene);
 
             Assembly currentasm = Assembly.GetExecutingAssembly();
 
@@ -189,22 +201,6 @@ namespace OpenSim.Region.DataSnapshot
                 }
             }
 
-            // Must be done here because on shared modules, PostInitialise() will run
-            // BEFORE any scenes are registered. There is no "all scenes have been loaded"
-            // kind of callback because scenes may be created dynamically, so we cannot
-            // have that info, ever.
-            if (!m_servicesNotified)
-            {
-                //Hand it the first scene, assuming that all scenes have the same BaseHTTPServer
-                new DataRequestHandler(m_scenes[0], this);
-
-                m_hostname = m_scenes[0].RegionInfo.ExternalHostName;
-
-                if (m_dataServices != "" && m_dataServices != "noservices")
-                    NotifyDataServices(m_dataServices, "online");
-
-                m_servicesNotified = true;
-            }
         }
 
         public void RemoveRegion(Scene scene)
diff --git a/OpenSim/Region/OptionalModules/Example/BareBonesNonShared/BareBonesNonSharedModule.cs b/OpenSim/Region/OptionalModules/Example/BareBonesNonShared/BareBonesNonSharedModule.cs
index ad2fc7a..0615036 100644
--- a/OpenSim/Region/OptionalModules/Example/BareBonesNonShared/BareBonesNonSharedModule.cs
+++ b/OpenSim/Region/OptionalModules/Example/BareBonesNonShared/BareBonesNonSharedModule.cs
@@ -33,10 +33,11 @@ using Nini.Config;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 
-// You will need to uncomment this line if you are adding a region module to some other assembly which does not already
+// You will need to uncomment these lines if you are adding a region module to some other assembly which does not already
 // specify its assembly.  Otherwise, the region modules in the assembly will not be picked up when OpenSimulator scans
 // the available DLLs
 //[assembly: Addin("MyModule", "1.0")]
+//[assembly: AddinDependency("OpenSim", "0.5")]
 
 namespace OpenSim.Region.OptionalModules.Example.BareBonesNonShared
 {
diff --git a/OpenSim/Region/OptionalModules/Example/BareBonesShared/BareBonesSharedModule.cs b/OpenSim/Region/OptionalModules/Example/BareBonesShared/BareBonesSharedModule.cs
index bb9cbb7..811a263 100644
--- a/OpenSim/Region/OptionalModules/Example/BareBonesShared/BareBonesSharedModule.cs
+++ b/OpenSim/Region/OptionalModules/Example/BareBonesShared/BareBonesSharedModule.cs
@@ -33,10 +33,11 @@ using Nini.Config;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 
-// You will need to uncomment this line if you are adding a region module to some other assembly which does not already
+// You will need to uncomment these lines if you are adding a region module to some other assembly which does not already
 // specify its assembly.  Otherwise, the region modules in the assembly will not be picked up when OpenSimulator scans
 // the available DLLs
 //[assembly: Addin("MyModule", "1.0")]
+//[assembly: AddinDependency("OpenSim", "0.5")]
 
 namespace OpenSim.Region.OptionalModules.Example.BareBonesShared
 {
diff --git a/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs b/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs
index 39cabb5..a375da9 100644
--- a/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs
+++ b/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs
@@ -57,9 +57,10 @@ namespace OpenSim.Region.OptionalModules
         
         public void Initialise(IConfigSource config)
         {
-            IConfig myConfig = config.Configs["Startup"];
+            //IConfig myConfig = config.Configs["Startup"];
 
-            string permissionModules = myConfig.GetString("permissionmodules", "DefaultPermissionsModule");
+            string permissionModules = Util.GetConfigVarFromSections<string>(config, "permissionmodules",
+                new string[] { "Startup", "Permissions" }, "DefaultPermissionsModule"); 
 
             List<string> modules=new List<string>(permissionModules.Split(','));
 
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index e6933f9..235cefc 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -961,13 +961,13 @@ namespace OpenSim.Region.Physics.BulletSPlugin
             // ==================================================================
             // Clamp high or low velocities
             float newVelocityLengthSq = VehicleVelocity.LengthSquared();
-            if (newVelocityLengthSq > BSParam.VehicleMaxLinearVelocitySq)
+            if (newVelocityLengthSq > BSParam.VehicleMaxLinearVelocitySquared)
             {
                 Vector3 origVelW = VehicleVelocity;         // DEBUG DEBUG
                 VehicleVelocity /= VehicleVelocity.Length();
                 VehicleVelocity *= BSParam.VehicleMaxLinearVelocity;
                 VDetailLog("{0},  MoveLinear,clampMax,origVelW={1},lenSq={2},maxVelSq={3},,newVelW={4}", 
-                            Prim.LocalID, origVelW, newVelocityLengthSq, BSParam.VehicleMaxLinearVelocitySq, VehicleVelocity);
+                            Prim.LocalID, origVelW, newVelocityLengthSq, BSParam.VehicleMaxLinearVelocitySquared, VehicleVelocity);
             }
             else if (newVelocityLengthSq < 0.001f)
                 VehicleVelocity = Vector3.Zero;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index dc57b67..fa58109 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -47,12 +47,16 @@ public static class BSParam
     public static float SculptLOD { get; private set; }
 
     public static int CrossingFailuresBeforeOutOfBounds { get; private set; }
+    public static float UpdateVelocityChangeThreshold { get; private set; }
 
     public static float MinimumObjectMass { get; private set; }
     public static float MaximumObjectMass { get; private set; }
     public static float MaxLinearVelocity { get; private set; }
+    public static float MaxLinearVelocitySquared { get; private set; }
     public static float MaxAngularVelocity { get; private set; }
+    public static float MaxAngularVelocitySquared { get; private set; }
     public static float MaxAddForceMagnitude { get; private set; }
+    public static float MaxAddForceMagnitudeSquared { get; private set; }
     public static float DensityScaleFactor { get; private set; }
 
     public static float LinearDamping { get; private set; }
@@ -109,7 +113,7 @@ public static class BSParam
 
     // Vehicle parameters
     public static float VehicleMaxLinearVelocity { get; private set; }
-    public static float VehicleMaxLinearVelocitySq { get; private set; }
+    public static float VehicleMaxLinearVelocitySquared { get; private set; }
     public static float VehicleMaxAngularVelocity { get; private set; }
     public static float VehicleMaxAngularVelocitySq { get; private set; }
     public static float VehicleAngularDamping { get; private set; }
@@ -265,7 +269,7 @@ public static class BSParam
     // The single letter parameters for the delegates are:
     //    s = BSScene
     //    o = BSPhysObject
-    //    v = value (float)
+    //    v = value (appropriate type)
     private static ParameterDefnBase[] ParameterDefinitions =
     {
         new ParameterDefn<bool>("MeshSculptedPrim", "Whether to create meshes for sculpties",
@@ -289,6 +293,10 @@ public static class BSParam
             5,
             (s) => { return CrossingFailuresBeforeOutOfBounds; },
             (s,v) => { CrossingFailuresBeforeOutOfBounds = v; } ),
+        new ParameterDefn<float>("UpdateVelocityChangeThreshold", "Change in updated velocity required before reporting change to simulator",
+            0.1f,
+            (s) => { return UpdateVelocityChangeThreshold; },
+            (s,v) => { UpdateVelocityChangeThreshold = v; } ),
 
         new ParameterDefn<float>("MeshLevelOfDetail", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
             32f,
@@ -343,16 +351,16 @@ public static class BSParam
         new ParameterDefn<float>("MaxLinearVelocity", "Maximum velocity magnitude that can be assigned to an object",
             1000.0f,
             (s) => { return MaxLinearVelocity; },
-            (s,v) => { MaxLinearVelocity = v; } ),
+            (s,v) => { MaxLinearVelocity = v; MaxLinearVelocitySquared = v * v; } ),
         new ParameterDefn<float>("MaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to an object",
             1000.0f,
             (s) => { return MaxAngularVelocity; },
-            (s,v) => { MaxAngularVelocity = v; } ),
+            (s,v) => { MaxAngularVelocity = v;  MaxAngularVelocitySquared = v * v; } ),
         // LL documentation says thie number should be 20f for llApplyImpulse and 200f for llRezObject
         new ParameterDefn<float>("MaxAddForceMagnitude", "Maximum force that can be applied by llApplyImpulse (SL says 20f)",
             20000.0f,
             (s) => { return MaxAddForceMagnitude; },
-            (s,v) => { MaxAddForceMagnitude = v; } ),
+            (s,v) => { MaxAddForceMagnitude = v; MaxAddForceMagnitudeSquared = v * v; } ),
         // Density is passed around as 100kg/m3. This scales that to 1kg/m3.
         new ParameterDefn<float>("DensityScaleFactor", "Conversion for simulator/viewer density (100kg/m3) to physical density (1kg/m3)",
             0.01f,
@@ -505,7 +513,7 @@ public static class BSParam
         new ParameterDefn<float>("VehicleMaxLinearVelocity", "Maximum velocity magnitude that can be assigned to a vehicle",
             1000.0f,
             (s) => { return (float)VehicleMaxLinearVelocity; },
-            (s,v) => { VehicleMaxLinearVelocity = v; VehicleMaxLinearVelocitySq = v * v; } ),
+            (s,v) => { VehicleMaxLinearVelocity = v; VehicleMaxLinearVelocitySquared = v * v; } ),
         new ParameterDefn<float>("VehicleMaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to a vehicle",
             12.0f,
             (s) => { return (float)VehicleMaxAngularVelocity; },
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 8f660c4..a465613 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -108,6 +108,9 @@ public class BSPrim : BSPhysObject
         // do the actual object creation at taint time
         PhysicsScene.TaintedObject("BSPrim.create", delegate()
         {
+            // Make sure the object is being created with some sanity.
+            ExtremeSanityCheck(true /* inTaintTime */);
+
             CreateGeomAndObject(true);
 
             CurrentCollisionFlags = PhysicsScene.PE.GetCollisionFlags(PhysBody);
@@ -450,6 +453,38 @@ public class BSPrim : BSPhysObject
         return ret;
     }
 
+    // Occasionally things will fly off and really get lost.
+    // Find the wanderers and bring them back.
+    // Return 'true' if some parameter need some sanity.
+    private bool ExtremeSanityCheck(bool inTaintTime)
+    {
+        bool ret = false;
+
+        uint wayOutThere = Constants.RegionSize * Constants.RegionSize;
+        // There have been instances of objects getting thrown way out of bounds and crashing
+        //    the border crossing code.
+        if (   _position.X < -Constants.RegionSize || _position.X > wayOutThere
+            || _position.Y < -Constants.RegionSize || _position.Y > wayOutThere
+            || _position.Z < -Constants.RegionSize || _position.Z > wayOutThere)
+        {
+            _position = new OMV.Vector3(10, 10, 50);
+            ZeroMotion(inTaintTime);
+            ret = true;
+        }
+        if (_velocity.LengthSquared() > BSParam.MaxLinearVelocity)
+        {
+            _velocity = Util.ClampV(_velocity, BSParam.MaxLinearVelocity);
+            ret = true;
+        }
+        if (_rotationalVelocity.LengthSquared() > BSParam.MaxAngularVelocitySquared)
+        {
+            _rotationalVelocity = Util.ClampV(_rotationalVelocity, BSParam.MaxAngularVelocity);
+            ret = true;
+        }
+
+        return ret;
+    }
+
     // Return the effective mass of the object.
         // The definition of this call is to return the mass of the prim.
         // If the simulator cares about the mass of the linkset, it will sum it itself.
@@ -585,12 +620,12 @@ public class BSPrim : BSPhysObject
                 if (VehicleController.Type == Vehicle.TYPE_NONE)
                 {
                     UnRegisterPreStepAction("BSPrim.Vehicle", LocalID);
-                    PhysicsScene.AfterStep -= VehicleController.PostStep;
+                    UnRegisterPostStepAction("BSPrim.Vehicle", LocalID);
                 }
                 else
                 {
                     RegisterPreStepAction("BSPrim.Vehicle", LocalID, VehicleController.Step);
-                    PhysicsScene.AfterStep += VehicleController.PostStep;
+                    RegisterPostStepAction("BSPrim.Vehicle", LocalID, VehicleController.PostStep);
                 }
             });
         }
@@ -732,7 +767,7 @@ public class BSPrim : BSPhysObject
         set {
             PhysicsScene.AssertInTaintTime("BSPrim.ForceVelocity");
 
-            _velocity = value;
+            _velocity = Util.ClampV(value, BSParam.MaxLinearVelocity);
             if (PhysBody.HasPhysicalBody)
             {
                 DetailLog("{0},BSPrim.ForceVelocity,taint,vel={1}", LocalID, _velocity);
@@ -1098,7 +1133,7 @@ public class BSPrim : BSPhysObject
             return _rotationalVelocity;
         }
         set {
-            _rotationalVelocity = value;
+            _rotationalVelocity = Util.ClampV(value, BSParam.MaxAngularVelocity);
             if (PhysBody.HasPhysicalBody)
             {
                 DetailLog("{0},BSPrim.ForceRotationalVel,taint,rotvel={1}", LocalID, _rotationalVelocity);
@@ -1230,6 +1265,7 @@ public class BSPrim : BSPhysObject
 
                 RegisterPreStepAction("BSPrim.Hover", LocalID, delegate(float timeStep)
                 {
+                    // Don't do hovering while the object is selected.
                     if (!IsPhysicallyActive)
                         return;
 
@@ -1737,10 +1773,9 @@ public class BSPrim : BSPhysObject
         // Assign directly to the local variables so the normal set actions do not happen
         _position = entprop.Position;
         _orientation = entprop.Rotation;
-        // _velocity = entprop.Velocity;
         // DEBUG DEBUG DEBUG -- smooth velocity changes a bit. The simulator seems to be
         //    very sensitive to velocity changes.
-        if (entprop.Velocity == OMV.Vector3.Zero || !entprop.Velocity.ApproxEquals(_velocity, 0.1f))
+        if (entprop.Velocity == OMV.Vector3.Zero || !entprop.Velocity.ApproxEquals(_velocity, BSParam.UpdateVelocityChangeThreshold))
             _velocity = entprop.Velocity;
         _acceleration = entprop.Acceleration;
         _rotationalVelocity = entprop.RotationalVelocity;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
index 4dc16f4..8a15abe 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
@@ -9,6 +9,9 @@ Enable vehicle border crossings (at least as poorly as ODE)
 Lock axis
 Deleting a linkset while standing on the root will leave the physical shape of the root behind.
         Not sure if it is because standing on it. Done with large prim linksets.
+Linkset child rotations.
+        Nebadon spiral tube has middle sections which are rotated wrong.
+        Select linked spiral tube. Delink and note where the middle section ends up.
 Vehicle angular vertical attraction
 vehicle angular banking
 Center-of-gravity
@@ -68,6 +71,8 @@ Vehicle attributes are not restored when a vehicle is rezzed on region creation
 
 GENERAL TODO LIST:
 =================================================
+Explore btGImpactMeshShape as alternative to convex hulls for simplified physical objects.
+        Regular triangle meshes don't do physical collisions.
 Resitution of a prim works on another prim but not on terrain.
         The dropped prim doesn't bounce properly on the terrain.
 Add a sanity check for PIDTarget location.
@@ -338,4 +343,4 @@ Avatar standing on a moving object should start to move with the object. (DONE 2
 Angular motion around Z moves the vehicle in world Z and not vehicle Z in ODE.
         Verify that angular motion specified around Z moves in the vehicle coordinates.
         DONE 20130120: BulletSim properly applies force in vehicle relative coordinates.
-Nebadon vehicles turning funny in arena (DONE)
\ No newline at end of file
+Nebadon vehicles turning funny in arena (DONE)