1 files changed, 6102 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
new file mode 100755
index 0000000..fe99ae5
--- /dev/null
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -0,0 +1,6102 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Text;
+using System.Threading;
+using System.Timers;
+using System.Xml;
+using Nini.Config;
+using OpenMetaverse;
+using OpenMetaverse.Packets;
+using OpenMetaverse.Imaging;
+using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
+using OpenSim.Services.Interfaces;
+using OpenSim.Framework.Communications;
+using OpenSim.Framework.Console;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes.Scripting;
+using OpenSim.Region.Framework.Scenes.Serialization;
+using OpenSim.Region.Physics.Manager;
+using Timer = System.Timers.Timer;
+using TPFlags = OpenSim.Framework.Constants.TeleportFlags;
+using GridRegion = OpenSim.Services.Interfaces.GridRegion;
+using PermissionMask = OpenSim.Framework.PermissionMask;
+
+namespace OpenSim.Region.Framework.Scenes
+{
+    public delegate bool FilterAvatarList(ScenePresence avatar);
+
+    public partial class Scene : SceneBase
+    {
+        private const long DEFAULT_MIN_TIME_FOR_PERSISTENCE = 60L;
+        private const long DEFAULT_MAX_TIME_FOR_PERSISTENCE = 600L;
+        
+        public const int m_defaultNumberFramesStored = 10;
+
+        public delegate void SynchronizeSceneHandler(Scene scene);
+
+        #region Fields
+
+        public bool EmergencyMonitoring = false;
+
+        /// <summary>
+        /// Show debug information about animations.
+        /// </summary>
+        public bool DebugAnimations { get; set; }
+
+        /// <summary>
+        /// Show debug information about teleports.
+        /// </summary>
+        public bool DebugTeleporting { get; set; }
+
+        /// <summary>
+        /// Show debug information about the scene loop.
+        /// </summary>
+        public bool DebugUpdates { get; set; }
+
+        /// <summary>
+        /// If true then the scene is saved to persistent storage periodically, every m_update_backup frames and
+        /// if objects meet required conditions (m_dontPersistBefore and m_dontPersistAfter).
+        /// </summary>
+        /// <remarks>
+        /// Even if false, the scene will still be saved on clean shutdown.
+        /// FIXME: Currently, setting this to false will mean that objects are not periodically returned from parcels.  
+        /// This needs to be fixed.
+        /// </remarks>
+        public bool PeriodicBackup { get; set; }
+
+        /// <summary>
+        /// If false then the scene is never saved to persistence storage even if PeriodicBackup == true and even
+        /// if the scene is being shut down for the final time.
+        /// </summary>
+        public bool UseBackup { get; set; }
+
+        /// <summary>
+        /// If false then physical objects are disabled, though collisions will continue as normal.
+        /// </summary>
+        public bool PhysicsEnabled
+        {
+            get
+            {
+                return m_physicsEnabled;
+            }
+
+            set
+            {
+                m_physicsEnabled = value;
+
+                if (PhysicsScene != null)
+                {
+                    IPhysicsParameters physScene = PhysicsScene as IPhysicsParameters;
+
+                    if (physScene != null)
+                        physScene.SetPhysicsParameter(
+                            "Active", m_physicsEnabled.ToString(), PhysParameterEntry.APPLY_TO_NONE);
+                }
+            }
+        }
+
+        private bool m_physicsEnabled;
+
+        /// <summary>
+        /// If false then scripts are not enabled on the smiulator
+        /// </summary>
+        public bool ScriptsEnabled
+        {
+            get { return m_scripts_enabled; }
+            set
+            {
+                if (m_scripts_enabled != value)
+                {
+                    if (!value)
+                    {
+                        m_log.Info("Stopping all Scripts in Scene");
+
+                        EntityBase[] entities = Entities.GetEntities();
+                        foreach (EntityBase ent in entities)
+                        {
+                            if (ent is SceneObjectGroup)
+                                ((SceneObjectGroup)ent).RemoveScriptInstances(false);
+                        }
+                    }
+                    else
+                    {
+                        m_log.Info("Starting all Scripts in Scene");
+
+                        EntityBase[] entities = Entities.GetEntities();
+                        foreach (EntityBase ent in entities)
+                        {
+                            if (ent is SceneObjectGroup)
+                            {
+                                SceneObjectGroup sog = (SceneObjectGroup)ent;
+                                sog.CreateScriptInstances(0, false, DefaultScriptEngine, 0);
+                                sog.ResumeScripts();
+                            }
+                        }
+                    }
+
+                    m_scripts_enabled = value;
+                }
+            }
+        }
+        private bool m_scripts_enabled;
+
+        public SynchronizeSceneHandler SynchronizeScene;
+
+        /// <summary>
+        /// Used to prevent simultaneous calls to code that adds and removes agents.
+        /// </summary>
+        private object m_removeClientLock = new object();
+
+        /// <summary>
+        /// Statistical information for this scene.
+        /// </summary>
+        public SimStatsReporter StatsReporter { get; private set; }
+
+        /// <summary>
+        /// Controls whether physics can be applied to prims.  Even if false, prims still have entries in a
+        /// PhysicsScene in order to perform collision detection
+        /// </summary>
+        public bool PhysicalPrims { get; private set; }
+
+        /// <summary>
+        /// Controls whether prims can be collided with.
+        /// </summary>
+        /// <remarks>
+        /// If this is set to false then prims cannot be subject to physics either.
+        /// </summary>
+        public bool CollidablePrims { get; private set; }
+
+        /// <summary>
+        /// Minimum value of the size of a non-physical prim in each axis
+        /// </summary>
+        public float m_minNonphys = 0.001f;
+
+        /// <summary>
+        /// Maximum value of the size of a non-physical prim in each axis
+        /// </summary>
+        public float m_maxNonphys = 256;
+
+        /// <summary>
+        /// Minimum value of the size of a physical prim in each axis
+        /// </summary>
+        public float m_minPhys = 0.01f;
+
+        /// <summary>
+        /// Maximum value of the size of a physical prim in each axis
+        /// </summary>
+        public float m_maxPhys = 64;
+
+        /// <summary>
+        /// Max prims an object will hold
+        /// </summary>
+        public int m_linksetCapacity = 0;
+
+        public bool m_clampPrimSize;
+        public bool m_trustBinaries;
+        public bool m_allowScriptCrossings = true;
+
+        /// <summary>
+        /// Can avatars cross from and to this region?
+        /// </summary>
+        public bool AllowAvatarCrossing { get; set; }
+
+        public bool m_useFlySlow;
+        public bool m_useTrashOnDelete = true;
+
+        /// <summary>
+        /// Temporarily setting to trigger appearance resends at 60 second intervals.
+        /// </summary>
+        public bool SendPeriodicAppearanceUpdates { get; set; }
+
+        /// <summary>
+        /// How much a root agent has to change position before updates are sent to viewers.
+        /// </summary>
+        public float RootPositionUpdateTolerance { get; set; }
+
+        /// <summary>
+        /// How much a root agent has to rotate before updates are sent to viewers.
+        /// </summary>
+        public float RootRotationUpdateTolerance { get; set; }
+
+        /// <summary>
+        /// How much a root agent has to change velocity before updates are sent to viewers.
+        /// </summary>
+        public float RootVelocityUpdateTolerance { get; set; }
+
+        /// <summary>
+        /// If greater than 1, we only send terse updates to other root agents on every n updates.
+        /// </summary>
+        public int RootTerseUpdatePeriod { get; set; }
+
+        /// <summary>
+        /// If greater than 1, we only send terse updates to child agents on every n updates.
+        /// </summary>
+        public int ChildTerseUpdatePeriod { get; set; }
+
+        protected float m_defaultDrawDistance = 255.0f;
+        public float DefaultDrawDistance
+        {
+            // get { return m_defaultDrawDistance; }
+            get
+            {
+                if (RegionInfo != null)
+                {
+                    float largestDimension = Math.Max(RegionInfo.RegionSizeX, RegionInfo.RegionSizeY);
+                    m_defaultDrawDistance = Math.Max(m_defaultDrawDistance, largestDimension);
+
+                }
+                return m_defaultDrawDistance;
+            }
+        }
+
+        private List<string> m_AllowedViewers = new List<string>();
+        private List<string> m_BannedViewers = new List<string>();
+
+        // TODO: need to figure out how allow client agents but deny
+        // root agents when ACL denies access to root agent
+        public bool m_strictAccessControl = true;
+
+        public int MaxUndoCount { get; set; }
+
+        public bool SeeIntoRegion { get; set; }
+
+        // Using this for RegionReady module to prevent LoginsDisabled from changing under our feet;
+        public bool LoginLock = false;
+
+        public bool StartDisabled = false;
+        public bool LoadingPrims;
+        public IXfer XferManager;
+
+        // the minimum time that must elapse before a changed object will be considered for persisted
+        public long m_dontPersistBefore = DEFAULT_MIN_TIME_FOR_PERSISTENCE * 10000000L;
+        // the maximum time that must elapse before a changed object will be considered for persisted
+        public long m_persistAfter = DEFAULT_MAX_TIME_FOR_PERSISTENCE * 10000000L;
+
+        protected int m_splitRegionID;
+        protected Timer m_restartWaitTimer = new Timer();
+        protected List<RegionInfo> m_regionRestartNotifyList = new List<RegionInfo>();
+        protected List<RegionInfo> m_neighbours = new List<RegionInfo>();
+        protected string m_simulatorVersion = "OpenSimulator Server";
+        protected AgentCircuitManager m_authenticateHandler;
+        protected SceneCommunicationService m_sceneGridService;
+
+        protected ISimulationDataService m_SimulationDataService;
+        protected IEstateDataService m_EstateDataService;
+        protected IAssetService m_AssetService;
+        protected IAuthorizationService m_AuthorizationService;
+        protected IInventoryService m_InventoryService;
+        protected IGridService m_GridService;
+        protected ILibraryService m_LibraryService;
+        protected ISimulationService m_simulationService;
+        protected IAuthenticationService m_AuthenticationService;
+        protected IPresenceService m_PresenceService;
+        protected IUserAccountService m_UserAccountService;
+        protected IAvatarService m_AvatarService;
+        protected IGridUserService m_GridUserService;
+        protected IAgentPreferencesService m_AgentPreferencesService;
+
+        protected IXMLRPC m_xmlrpcModule;
+        protected IWorldComm m_worldCommModule;
+        protected IAvatarFactoryModule m_AvatarFactory;
+        protected IConfigSource m_config;
+        protected IRegionSerialiserModule m_serialiser;
+        protected IDialogModule m_dialogModule;
+        protected ICapabilitiesModule m_capsModule;
+        protected IGroupsModule m_groupsModule;
+
+        private Dictionary<string, string> m_extraSettings;
+
+        /// <summary>
+        /// If true then the next time the scene loop is activated, updates will be performed by firing of a timer
+        /// rather than on a single thread that sleeps.
+        /// </summary>
+        public bool UpdateOnTimer { get; set; }
+
+        /// <summary>
+        /// Only used if we are updating scene on a timer rather than sleeping a thread.
+        /// </summary>
+        private Timer m_sceneUpdateTimer;
+
+        /// <summary>
+        /// Current scene frame number
+        /// </summary>
+        public uint Frame
+        {
+            get;
+            protected set;
+        }
+
+        /// <summary>
+        /// Current maintenance run number
+        /// </summary>
+        public uint MaintenanceRun { get; private set; }
+
+        /// <summary>
+        /// The minimum length of time in milliseconds that will be taken for a scene frame.  If the frame takes less time then we
+        /// will sleep for the remaining period.
+        /// </summary>
+        /// <remarks>
+        /// One can tweak this number to experiment.  One current effect of reducing it is to make avatar animations
+        /// occur too quickly (viewer 1) or with even more slide (viewer 2).
+        /// </remarks>
+        public int MinFrameTicks
+        {
+            get { return m_minFrameTicks; }
+            private set
+            {
+                m_minFrameTicks = value;
+                MinFrameSeconds = (float)m_minFrameTicks / 1000;
+            }
+        }
+        private int m_minFrameTicks;
+
+        /// <summary>
+        /// The minimum length of time in seconds that will be taken for a scene frame.
+        /// </summary>
+        /// <remarks>
+        /// Always derived from MinFrameTicks.
+        /// </remarks>
+        public float MinFrameSeconds { get; private set; }
+
+        /// <summary>
+        /// The minimum length of time in milliseconds that will be taken for a scene frame.  If the frame takes less time then we
+        /// will sleep for the remaining period.
+        /// </summary>
+        /// <remarks>
+        /// One can tweak this number to experiment.  One current effect of reducing it is to make avatar animations
+        /// occur too quickly (viewer 1) or with even more slide (viewer 2).
+        /// </remarks>
+        public int MinMaintenanceTicks { get; set; }
+
+        private int m_update_physics = 1;
+        private int m_update_entitymovement = 1;
+        private int m_update_objects = 1;
+        private int m_update_presences = 1; // Update scene presence movements
+        private int m_update_events = 1;
+        private int m_update_backup = 200;
+        private int m_update_terrain = 50;
+        //        private int m_update_land = 1;
+        private int m_update_coarse_locations = 50;
+        private int m_update_temp_cleaning = 180;
+
+        private int agentMS;
+        private int frameMS;
+        private int physicsMS2;
+        private int physicsMS;
+        private int otherMS;
+        private int tempOnRezMS;
+        private int eventMS;
+        private int backupMS;
+        private int terrainMS;
+        private int landMS;
+        private int spareMS;
+
+        // A temporary configuration flag to enable using FireAndForget to process
+        //   collisions from the physics engine. There is a problem with collisions
+        //   stopping sometimes and MB's suspicion is some race condition passing
+        //   collisions from the physics engine callback to the script engine.
+        //   This causes the collision events to be passed with a FireAndForget
+        //   call which should eliminate that linkage. Testers can turn this on
+        //   and see if collisions stop. If they don't, the problem is somewhere else.
+        //   This feature defaults to 'off' so, by default, the simulator operation
+        //   is not changed.
+        public bool ShouldUseFireAndForgetForCollisions = false;
+
+        /// <summary>
+        /// Tick at which the last frame was processed.
+        /// </summary>
+        private int m_lastFrameTick;
+
+        /// <summary>
+        /// Tick at which the last maintenance run occurred.
+        /// </summary>
+        private int m_lastMaintenanceTick;
+
+        /// <summary>
+        /// Total script execution time (in Stopwatch Ticks) since the last frame
+        /// </summary>
+        private long m_scriptExecutionTime = 0;
+
+        /// <summary>
+        /// Signals whether temporary objects are currently being cleaned up.  Needed because this is launched
+        /// asynchronously from the update loop.
+        /// </summary>
+        private bool m_cleaningTemps = false;
+
+        /// <summary>
+        /// Used to control main scene thread looping time when not updating via timer.
+        /// </summary>
+        private ManualResetEvent m_updateWaitEvent = new ManualResetEvent(false);
+
+        /// <summary>
+        /// Used to control maintenance thread runs.
+        /// </summary>
+        private ManualResetEvent m_maintenanceWaitEvent = new ManualResetEvent(false);
+
+        // TODO: Possibly stop other classes being able to manipulate this directly.
+        private SceneGraph m_sceneGraph;
+        private readonly Timer m_restartTimer = new Timer(15000); // Wait before firing
+        private volatile bool m_backingup;
+        private Dictionary<UUID, ReturnInfo> m_returns = new Dictionary<UUID, ReturnInfo>();
+        private Dictionary<UUID, SceneObjectGroup> m_groupsWithTargets = new Dictionary<UUID, SceneObjectGroup>();
+
+        private string m_defaultScriptEngine;
+
+        private int m_unixStartTime;
+        public int UnixStartTime
+        {
+            get { return m_unixStartTime; }
+        }
+
+        /// <summary>
+        /// Tick at which the last login occurred.
+        /// </summary>
+        private int m_LastLogin;
+
+        /// <summary>
+        /// Thread that runs the scene loop.
+        /// </summary>
+        private Thread m_heartbeatThread;
+
+        /// <summary>
+        /// True if these scene is in the process of shutting down or is shutdown.
+        /// </summary>
+        public bool ShuttingDown
+        {
+            get { return m_shuttingDown; }
+        }
+        private volatile bool m_shuttingDown;
+
+        /// <summary>
+        /// Is the scene active?
+        /// </summary>
+        /// <remarks>
+        /// If false, maintenance and update loops are not being run, though after setting to false update may still
+        /// be active for a period (and IsRunning will still be true).  Updates can still be triggered manually if
+        /// the scene is not active.
+        /// </remarks>
+        public bool Active
+        {
+            get { return m_active; }
+            set
+            {
+                if (value)
+                {
+                    if (!m_active)
+                        Start(false);
+                }
+                else
+                {
+                    // This appears assymetric with Start() above but is not - setting m_active = false stops the loops
+                    // XXX: Possibly this should be in an explicit Stop() method for symmetry.
+                    m_active = false;
+                }
+            }
+        }
+        private volatile bool m_active;
+
+        /// <summary>
+        /// If true then updates are running.  This may be true for a short period after a scene is de-activated.
+        /// </summary>
+        public bool IsRunning { get { return m_isRunning; } }
+        private volatile bool m_isRunning;
+
+        private Timer m_mapGenerationTimer = new Timer();
+        private bool m_generateMaptiles;
+
+        #endregion Fields
+
+        #region Properties
+
+        /* Used by the loadbalancer plugin on GForge */
+        public int SplitRegionID
+        {
+            get { return m_splitRegionID; }
+            set { m_splitRegionID = value; }
+        }
+
+        public new float TimeDilation
+        {
+            get { return m_sceneGraph.PhysicsScene.TimeDilation; }
+        }
+
+        public void setThreadCount(int inUseThreads)
+        {
+            // Just pass the thread count information on its way as the Scene
+            // does not require the value for anything at this time
+            StatsReporter.SetThreadCount(inUseThreads);
+        }
+
+        public SceneCommunicationService SceneGridService
+        {
+            get { return m_sceneGridService; }
+        }
+
+        public ISimulationDataService SimulationDataService
+        {
+            get
+            {
+                if (m_SimulationDataService == null)
+                {
+                    m_SimulationDataService = RequestModuleInterface<ISimulationDataService>();
+
+                    if (m_SimulationDataService == null)
+                    {
+                        throw new Exception("No ISimulationDataService available.");
+                    }
+                }
+
+                return m_SimulationDataService;
+            }
+        }
+
+        public IEstateDataService EstateDataService
+        {
+            get
+            {
+                if (m_EstateDataService == null)
+                {
+                    m_EstateDataService = RequestModuleInterface<IEstateDataService>();
+
+                    if (m_EstateDataService == null)
+                    {
+                        throw new Exception("No IEstateDataService available.");
+                    }
+                }
+
+                return m_EstateDataService;
+            }
+        }
+
+        public IAssetService AssetService
+        {
+            get
+            {
+                if (m_AssetService == null)
+                {
+                    m_AssetService = RequestModuleInterface<IAssetService>();
+
+                    if (m_AssetService == null)
+                    {
+                        throw new Exception("No IAssetService available.");
+                    }
+                }
+
+                return m_AssetService;
+            }
+        }
+
+        public IAuthorizationService AuthorizationService
+        {
+            get
+            {
+                if (m_AuthorizationService == null)
+                {
+                    m_AuthorizationService = RequestModuleInterface<IAuthorizationService>();
+
+                    //if (m_AuthorizationService == null)
+                    //{
+                    //    // don't throw an exception if no authorization service is set for the time being
+                    //     m_log.InfoFormat("[SCENE]: No Authorization service is configured");
+                    //}
+                }
+
+                return m_AuthorizationService;
+            }
+        }
+
+        public IInventoryService InventoryService
+        {
+            get
+            {
+                if (m_InventoryService == null)
+                {
+                    m_InventoryService = RequestModuleInterface<IInventoryService>();
+
+                    if (m_InventoryService == null)
+                    {
+                        throw new Exception("No IInventoryService available. This could happen if the config_include folder doesn't exist or if the OpenSim.ini [Architecture] section isn't set.  Please also check that you have the correct version of your inventory service dll.  Sometimes old versions of this dll will still exist.  Do a clean checkout and re-create the opensim.ini from the opensim.ini.example.");
+                    }
+                }
+
+                return m_InventoryService;
+            }
+        }
+
+        public IGridService GridService
+        {
+            get
+            {
+                if (m_GridService == null)
+                {
+                    m_GridService = RequestModuleInterface<IGridService>();
+
+                    if (m_GridService == null)
+                    {
+                        throw new Exception("No IGridService available. This could happen if the config_include folder doesn't exist or if the OpenSim.ini [Architecture] section isn't set.  Please also check that you have the correct version of your inventory service dll.  Sometimes old versions of this dll will still exist.  Do a clean checkout and re-create the opensim.ini from the opensim.ini.example.");
+                    }
+                }
+
+                return m_GridService;
+            }
+        }
+
+        public ILibraryService LibraryService
+        {
+            get
+            {
+                if (m_LibraryService == null)
+                    m_LibraryService = RequestModuleInterface<ILibraryService>();
+
+                return m_LibraryService;
+            }
+        }
+
+        public ISimulationService SimulationService
+        {
+            get
+            {
+                if (m_simulationService == null)
+                    m_simulationService = RequestModuleInterface<ISimulationService>();
+
+                return m_simulationService;
+            }
+        }
+
+        public IAuthenticationService AuthenticationService
+        {
+            get
+            {
+                if (m_AuthenticationService == null)
+                    m_AuthenticationService = RequestModuleInterface<IAuthenticationService>();
+                return m_AuthenticationService;
+            }
+        }
+
+        public IPresenceService PresenceService
+        {
+            get
+            {
+                if (m_PresenceService == null)
+                    m_PresenceService = RequestModuleInterface<IPresenceService>();
+                return m_PresenceService;
+            }
+        }
+
+        public IUserAccountService UserAccountService
+        {
+            get
+            {
+                if (m_UserAccountService == null)
+                    m_UserAccountService = RequestModuleInterface<IUserAccountService>();
+                return m_UserAccountService;
+            }
+        }
+
+        public IAvatarService AvatarService
+        {
+            get
+            {
+                if (m_AvatarService == null)
+                    m_AvatarService = RequestModuleInterface<IAvatarService>();
+                return m_AvatarService;
+            }
+        }
+
+        public IGridUserService GridUserService
+        {
+            get
+            {
+                if (m_GridUserService == null)
+                    m_GridUserService = RequestModuleInterface<IGridUserService>();
+                return m_GridUserService;
+            }
+        }
+
+        public IAgentPreferencesService AgentPreferencesService
+        {
+            get
+            {
+                if (m_AgentPreferencesService == null)
+                    m_AgentPreferencesService = RequestModuleInterface<IAgentPreferencesService>();
+                return m_AgentPreferencesService;
+            }
+        }
+
+        public IAttachmentsModule AttachmentsModule { get; set; }
+        public IEntityTransferModule EntityTransferModule { get; private set; }
+        public IAgentAssetTransactions AgentTransactionsModule { get; private set; }
+        public IUserManagement UserManagementModule { get; private set; }
+
+        public IAvatarFactoryModule AvatarFactory
+        {
+            get { return m_AvatarFactory; }
+        }
+
+        public ICapabilitiesModule CapsModule
+        {
+            get { return m_capsModule; }
+        }
+
+        public int MonitorFrameTime { get { return frameMS; } }
+        public int MonitorPhysicsUpdateTime { get { return physicsMS; } }
+        public int MonitorPhysicsSyncTime { get { return physicsMS2; } }
+        public int MonitorOtherTime { get { return otherMS; } }
+        public int MonitorTempOnRezTime { get { return tempOnRezMS; } }
+        public int MonitorEventTime { get { return eventMS; } } // This may need to be divided into each event?
+        public int MonitorBackupTime { get { return backupMS; } }
+        public int MonitorTerrainTime { get { return terrainMS; } }
+        public int MonitorLandTime { get { return landMS; } }
+        public int MonitorLastFrameTick { get { return m_lastFrameTick; } }
+
+        public UpdatePrioritizationSchemes UpdatePrioritizationScheme { get; set; }
+        public bool IsReprioritizationEnabled { get; set; }
+        public double ReprioritizationInterval { get; set; }
+        public double RootReprioritizationDistance { get; set; }
+        public double ChildReprioritizationDistance { get; set; }
+
+        public AgentCircuitManager AuthenticateHandler
+        {
+            get { return m_authenticateHandler; }
+        }
+
+        // an instance to the physics plugin's Scene object.
+        public PhysicsScene PhysicsScene
+        {
+            get { return m_sceneGraph.PhysicsScene; }
+            set
+            {
+                // If we're not doing the initial set
+                // Then we've got to remove the previous
+                // event handler
+                if (PhysicsScene != null && PhysicsScene.SupportsNINJAJoints)
+                {
+                    PhysicsScene.OnJointMoved -= jointMoved;
+                    PhysicsScene.OnJointDeactivated -= jointDeactivated;
+                    PhysicsScene.OnJointErrorMessage -= jointErrorMessage;
+                }
+
+                m_sceneGraph.PhysicsScene = value;
+
+                if (PhysicsScene != null && m_sceneGraph.PhysicsScene.SupportsNINJAJoints)
+                {
+                    // register event handlers to respond to joint movement/deactivation
+                    PhysicsScene.OnJointMoved += jointMoved;
+                    PhysicsScene.OnJointDeactivated += jointDeactivated;
+                    PhysicsScene.OnJointErrorMessage += jointErrorMessage;
+                }
+            }
+        }
+
+        public string DefaultScriptEngine
+        {
+            get { return m_defaultScriptEngine; }
+        }
+
+        public EntityManager Entities
+        {
+            get { return m_sceneGraph.Entities; }
+        }
+
+
+        // used in sequence see: SpawnPoint()
+        private int m_SpawnPoint;
+        // can be closest/random/sequence
+        public string SpawnPointRouting
+        {
+            get;
+            private set;
+        }
+        // allow landmarks to pass
+        public bool TelehubAllowLandmarks
+        {
+            get;
+            private set;
+        }
+
+        #endregion Properties
+
+        #region Constructors
+
+        public Scene(RegionInfo regInfo, AgentCircuitManager authen, PhysicsScene physicsScene,
+                     SceneCommunicationService sceneGridService,
+                     ISimulationDataService simDataService, IEstateDataService estateDataService,
+                     IConfigSource config, string simulatorVersion)
+            : this(regInfo, physicsScene)
+        {
+            m_config = config;
+            MinFrameTicks = 89;
+            MinMaintenanceTicks = 1000;
+            SeeIntoRegion = true;
+
+            Random random = new Random();
+
+            m_lastAllocatedLocalId = (uint)(random.NextDouble() * (double)(uint.MaxValue / 2)) + (uint)(uint.MaxValue / 4);
+            m_authenticateHandler = authen;
+            m_sceneGridService = sceneGridService;
+            m_SimulationDataService = simDataService;
+            m_EstateDataService = estateDataService;
+
+            m_asyncSceneObjectDeleter = new AsyncSceneObjectGroupDeleter(this);
+            m_asyncSceneObjectDeleter.Enabled = true;
+
+            m_asyncInventorySender = new AsyncInventorySender(this);
+
+            #region Region Settings
+
+            // Load region settings
+            // LoadRegionSettings creates new region settings in persistence if they don't already exist for this region.
+            // However, in this case, the default textures are not set in memory properly, so we need to do it here and
+            // resave.
+            // FIXME: It shouldn't be up to the database plugins to create this data - we should do it when a new
+            // region is set up and avoid these gyrations.
+            RegionSettings rs = simDataService.LoadRegionSettings(RegionInfo.RegionID);
+            m_extraSettings = simDataService.GetExtra(RegionInfo.RegionID);
+
+            bool updatedTerrainTextures = false;
+            if (rs.TerrainTexture1 == UUID.Zero)
+            {
+                rs.TerrainTexture1 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_1;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture2 == UUID.Zero)
+            {
+                rs.TerrainTexture2 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_2;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture3 == UUID.Zero)
+            {
+                rs.TerrainTexture3 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_3;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture4 == UUID.Zero)
+            {
+                rs.TerrainTexture4 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_4;
+                updatedTerrainTextures = true;
+            }
+
+            if (updatedTerrainTextures)
+                rs.Save();
+
+            RegionInfo.RegionSettings = rs;
+
+            if (estateDataService != null)
+                RegionInfo.EstateSettings = estateDataService.LoadEstateSettings(RegionInfo.RegionID, false);
+
+            #endregion Region Settings
+
+            //Bind Storage Manager functions to some land manager functions for this scene
+            EventManager.OnLandObjectAdded +=
+                new EventManager.LandObjectAdded(simDataService.StoreLandObject);
+            EventManager.OnLandObjectRemoved +=
+                new EventManager.LandObjectRemoved(simDataService.RemoveLandObject);
+
+            RegisterDefaultSceneEvents();
+
+            // XXX: Don't set the public property since we don't want to activate here.  This needs to be handled 
+            // better in the future.
+            m_scripts_enabled = !RegionInfo.RegionSettings.DisableScripts;
+
+            PhysicsEnabled = !RegionInfo.RegionSettings.DisablePhysics;
+
+            m_simulatorVersion = simulatorVersion + " (" + Util.GetRuntimeInformation() + ")";
+
+            #region Region Config
+
+            // Region config overrides global config
+            //
+            if (m_config.Configs["Startup"] != null)
+            {
+                IConfig startupConfig = m_config.Configs["Startup"];
+
+                StartDisabled = startupConfig.GetBoolean("StartDisabled", false);
+
+                m_defaultDrawDistance = startupConfig.GetFloat("DefaultDrawDistance", m_defaultDrawDistance);
+                UseBackup = startupConfig.GetBoolean("UseSceneBackup", UseBackup);
+                if (!UseBackup)
+                    m_log.InfoFormat("[SCENE]: Backup has been disabled for {0}", RegionInfo.RegionName);
+
+                //Animation states
+                m_useFlySlow = startupConfig.GetBoolean("enableflyslow", false);
+
+                SeeIntoRegion = startupConfig.GetBoolean("see_into_region", SeeIntoRegion);
+
+                MaxUndoCount = startupConfig.GetInt("MaxPrimUndos", 20);
+
+                PhysicalPrims = startupConfig.GetBoolean("physical_prim", PhysicalPrims);
+                CollidablePrims = startupConfig.GetBoolean("collidable_prim", CollidablePrims);
+
+                m_minNonphys = startupConfig.GetFloat("NonPhysicalPrimMin", m_minNonphys);
+                if (RegionInfo.NonphysPrimMin > 0)
+                {
+                    m_minNonphys = RegionInfo.NonphysPrimMin;
+                }
+
+                m_maxNonphys = startupConfig.GetFloat("NonPhysicalPrimMax", m_maxNonphys);
+                if (RegionInfo.NonphysPrimMax > 0)
+                {
+                    m_maxNonphys = RegionInfo.NonphysPrimMax;
+                }
+
+                m_minPhys = startupConfig.GetFloat("PhysicalPrimMin", m_minPhys);
+                if (RegionInfo.PhysPrimMin > 0)
+                {
+                    m_minPhys = RegionInfo.PhysPrimMin;
+                }
+
+                m_maxPhys = startupConfig.GetFloat("PhysicalPrimMax", m_maxPhys);
+                if (RegionInfo.PhysPrimMax > 0)
+                {
+                    m_maxPhys = RegionInfo.PhysPrimMax;
+                }
+
+                // Here, if clamping is requested in either global or
+                // local config, it will be used
+                //
+                m_clampPrimSize = startupConfig.GetBoolean("ClampPrimSize", m_clampPrimSize);
+                if (RegionInfo.ClampPrimSize)
+                {
+                    m_clampPrimSize = true;
+                }
+
+                m_linksetCapacity = startupConfig.GetInt("LinksetPrims", m_linksetCapacity);
+                if (RegionInfo.LinksetCapacity > 0)
+                {
+                    m_linksetCapacity = RegionInfo.LinksetCapacity;
+                }
+
+                m_useTrashOnDelete = startupConfig.GetBoolean("UseTrashOnDelete", m_useTrashOnDelete);
+                m_trustBinaries = startupConfig.GetBoolean("TrustBinaries", m_trustBinaries);
+                m_allowScriptCrossings = startupConfig.GetBoolean("AllowScriptCrossing", m_allowScriptCrossings);
+                m_dontPersistBefore =
+                    startupConfig.GetLong("MinimumTimeBeforePersistenceConsidered", DEFAULT_MIN_TIME_FOR_PERSISTENCE);
+                m_dontPersistBefore *= 10000000;
+                m_persistAfter =
+                    startupConfig.GetLong("MaximumTimeBeforePersistenceConsidered", DEFAULT_MAX_TIME_FOR_PERSISTENCE);
+                m_persistAfter *= 10000000;
+
+                m_defaultScriptEngine = startupConfig.GetString("DefaultScriptEngine", "XEngine");
+
+                SpawnPointRouting = startupConfig.GetString("SpawnPointRouting", "closest");
+                TelehubAllowLandmarks = startupConfig.GetBoolean("TelehubAllowLandmark", false);
+
+                m_strictAccessControl = startupConfig.GetBoolean("StrictAccessControl", m_strictAccessControl);
+
+                string[] possibleMapConfigSections = new string[] { "Map", "Startup" };
+
+                m_generateMaptiles
+                    = Util.GetConfigVarFromSections<bool>(config, "GenerateMaptiles", possibleMapConfigSections, true);
+
+                if (m_generateMaptiles)
+                {
+                    int maptileRefresh = Util.GetConfigVarFromSections<int>(config, "MaptileRefresh", possibleMapConfigSections, 0);
+                    m_log.InfoFormat("[SCENE]: Region {0}, WORLD MAP refresh time set to {1} seconds", RegionInfo.RegionName, maptileRefresh);
+                    if (maptileRefresh != 0)
+                    {
+                        m_mapGenerationTimer.Interval = maptileRefresh * 1000;
+                        m_mapGenerationTimer.Elapsed += RegenerateMaptileAndReregister;
+                        m_mapGenerationTimer.AutoReset = true;
+                        m_mapGenerationTimer.Start();
+                    }
+                }
+                else
+                {
+                    string tile
+                        = Util.GetConfigVarFromSections<string>(
+                            config, "MaptileStaticUUID", possibleMapConfigSections, UUID.Zero.ToString());
+
+                    UUID tileID;
+
+                    if (tile != UUID.Zero.ToString() && UUID.TryParse(tile, out tileID))
+                    {
+                        RegionInfo.RegionSettings.TerrainImageID = tileID;
+                    }
+                    else
+                    {
+                        RegionInfo.RegionSettings.TerrainImageID = RegionInfo.MaptileStaticUUID;
+                        m_log.InfoFormat("[SCENE]: Region {0}, maptile set to {1}", RegionInfo.RegionName, RegionInfo.MaptileStaticUUID.ToString());
+                    }
+                }
+
+                string[] possibleAccessControlConfigSections = new string[] { "AccessControl", "Startup" };
+
+                string grant
+                    = Util.GetConfigVarFromSections<string>(
+                        config, "AllowedClients", possibleAccessControlConfigSections, "");
+
+                if (grant.Length > 0)
+                {
+                    foreach (string viewer in grant.Split('|'))
+                    {
+                        m_AllowedViewers.Add(viewer.Trim().ToLower());
+                    }
+                }
+
+                grant
+                    = Util.GetConfigVarFromSections<string>(
+                        config, "BannedClients", possibleAccessControlConfigSections, "");
+
+                if (grant.Length > 0)
+                {
+                    foreach (string viewer in grant.Split('|'))
+                    {
+                        m_BannedViewers.Add(viewer.Trim().ToLower());
+                    }
+                }
+
+                if (startupConfig.Contains("MinFrameTime"))
+                    MinFrameTicks = (int)(startupConfig.GetFloat("MinFrameTime") * 1000);
+
+                m_update_backup           = startupConfig.GetInt("UpdateStorageEveryNFrames",         m_update_backup);
+                m_update_coarse_locations = startupConfig.GetInt("UpdateCoarseLocationsEveryNFrames", m_update_coarse_locations);
+                m_update_entitymovement   = startupConfig.GetInt("UpdateEntityMovementEveryNFrames",  m_update_entitymovement);
+                m_update_events           = startupConfig.GetInt("UpdateEventsEveryNFrames",          m_update_events);
+                m_update_objects          = startupConfig.GetInt("UpdateObjectsEveryNFrames",         m_update_objects);
+                m_update_physics          = startupConfig.GetInt("UpdatePhysicsEveryNFrames",         m_update_physics);
+                m_update_presences        = startupConfig.GetInt("UpdateAgentsEveryNFrames",          m_update_presences);
+                m_update_terrain          = startupConfig.GetInt("UpdateTerrainEveryNFrames",         m_update_terrain);
+                m_update_temp_cleaning    = startupConfig.GetInt("UpdateTempCleaningEveryNSeconds",   m_update_temp_cleaning);
+
+                if (startupConfig.Contains("ShouldUseFireAndForgetForCollisions"))
+                {
+                    ShouldUseFireAndForgetForCollisions = startupConfig.GetBoolean("ShouldUseFireAndForgetForCollisions", false);
+                }
+            }
+
+
+            // FIXME: Ultimately this should be in a module.
+            SendPeriodicAppearanceUpdates = false;
+
+            IConfig appearanceConfig = m_config.Configs["Appearance"];
+            if (appearanceConfig != null)
+            {
+                SendPeriodicAppearanceUpdates
+                    = appearanceConfig.GetBoolean("ResendAppearanceUpdates", SendPeriodicAppearanceUpdates);
+            }
+
+            #endregion Region Config
+
+            IConfig entityTransferConfig = m_config.Configs["EntityTransfer"];
+            if (entityTransferConfig != null)
+            {
+                AllowAvatarCrossing = entityTransferConfig.GetBoolean("AllowAvatarCrossing", AllowAvatarCrossing);
+            }
+
+            #region Interest Management
+
+            IConfig interestConfig = m_config.Configs["InterestManagement"];
+            if (interestConfig != null)
+            {
+                string update_prioritization_scheme = interestConfig.GetString("UpdatePrioritizationScheme", "Time").Trim().ToLower();
+
+                try
+                {
+                    UpdatePrioritizationScheme = (UpdatePrioritizationSchemes)Enum.Parse(typeof(UpdatePrioritizationSchemes), update_prioritization_scheme, true);
+                }
+                catch (Exception)
+                {
+                    m_log.Warn("[PRIORITIZER]: UpdatePrioritizationScheme was not recognized, setting to default prioritizer Time");
+                    UpdatePrioritizationScheme = UpdatePrioritizationSchemes.Time;
+                }
+
+                IsReprioritizationEnabled
+                    = interestConfig.GetBoolean("ReprioritizationEnabled", IsReprioritizationEnabled);
+                ReprioritizationInterval
+                    = interestConfig.GetDouble("ReprioritizationInterval", ReprioritizationInterval);
+                RootReprioritizationDistance
+                    = interestConfig.GetDouble("RootReprioritizationDistance", RootReprioritizationDistance);
+                ChildReprioritizationDistance
+                    = interestConfig.GetDouble("ChildReprioritizationDistance", ChildReprioritizationDistance);
+
+                RootTerseUpdatePeriod = interestConfig.GetInt("RootTerseUpdatePeriod", RootTerseUpdatePeriod);
+                ChildTerseUpdatePeriod = interestConfig.GetInt("ChildTerseUpdatePeriod", ChildTerseUpdatePeriod);
+
+                RootPositionUpdateTolerance
+                    = interestConfig.GetFloat("RootPositionUpdateTolerance", RootPositionUpdateTolerance);
+                RootRotationUpdateTolerance
+                    = interestConfig.GetFloat("RootRotationUpdateTolerance", RootRotationUpdateTolerance);
+                RootVelocityUpdateTolerance
+                    = interestConfig.GetFloat("RootVelocityUpdateTolerance", RootVelocityUpdateTolerance);
+            }
+
+            m_log.DebugFormat("[SCENE]: Using the {0} prioritization scheme", UpdatePrioritizationScheme);
+
+            #endregion Interest Management
+
+            // The timer used by the Stopwatch class depends on the system hardware and operating system; inform
+            // if the timer is based on a high-resolution performance counter or based on the system timer;
+            // the performance counter will provide a more precise time than the system timer
+            if (Stopwatch.IsHighResolution)
+                m_log.InfoFormat("[SCENE]: Using high-resolution performance counter for statistics.");
+            else
+                m_log.InfoFormat("[SCENE]: Using system timer for statistics.");
+
+            // Acquire the statistics section of the OpenSim.ini file located
+            // in the bin directory
+            IConfig statisticsConfig = m_config.Configs["Statistics"];
+
+            // Confirm that the statistics section existed in the configuration
+            // file
+            if (statisticsConfig != null)
+            {
+                // Create the StatsReporter using the number of frames to store
+                // for the frame time statistics, or 10 frames if the config
+                // file doesn't contain a value
+                StatsReporter = new SimStatsReporter(this,
+                    statisticsConfig.GetInt("NumberOfFrames", 
+                    m_defaultNumberFramesStored));
+            }
+            else
+            {
+                // Create a StatsReporter with the current scene and a default
+                // 10 frames stored for the frame time statistics
+                StatsReporter = new SimStatsReporter(this);
+            }
+
+            StatsReporter.OnSendStatsResult += SendSimStatsPackets;
+            StatsReporter.OnStatsIncorrect += m_sceneGraph.RecalculateStats;
+
+        }
+
+        public Scene(RegionInfo regInfo, PhysicsScene physicsScene)
+            : base(regInfo)
+        {
+            m_sceneGraph = new SceneGraph(this);
+            m_sceneGraph.PhysicsScene = physicsScene;
+
+            // If the scene graph has an Unrecoverable error, restart this sim.
+            // Currently the only thing that causes it to happen is two kinds of specific
+            // Physics based crashes.
+            //
+            // Out of memory
+            // Operating system has killed the plugin
+            m_sceneGraph.UnRecoverableError
+                += () =>
+            {
+                m_log.ErrorFormat("[SCENE]: Restarting region {0} due to unrecoverable physics crash", Name);
+                RestartNow();
+            };
+
+            PhysicalPrims = true;
+            CollidablePrims = true;
+            PhysicsEnabled = true;
+
+            AllowAvatarCrossing = true;
+
+            PeriodicBackup = true;
+            UseBackup = true;
+
+            IsReprioritizationEnabled = true;
+            UpdatePrioritizationScheme = UpdatePrioritizationSchemes.Time;
+            ReprioritizationInterval = 5000;
+
+            RootRotationUpdateTolerance = 0.1f;
+            RootVelocityUpdateTolerance = 0.001f;
+            RootPositionUpdateTolerance = 0.05f;
+            RootReprioritizationDistance = 10.0;
+            ChildReprioritizationDistance = 20.0;
+
+            m_eventManager = new EventManager();
+
+            m_permissions = new ScenePermissions(this);
+        }
+
+        #endregion
+
+        #region Startup / Close Methods
+
+        /// <value>
+        /// The scene graph for this scene
+        /// </value>
+        /// TODO: Possibly stop other classes being able to manipulate this directly.
+        public SceneGraph SceneGraph
+        {
+            get { return m_sceneGraph; }
+        }
+
+        protected virtual void RegisterDefaultSceneEvents()
+        {
+            IDialogModule dm = RequestModuleInterface<IDialogModule>();
+
+            if (dm != null)
+                m_eventManager.OnPermissionError += dm.SendAlertToUser;
+
+            m_eventManager.OnSignificantClientMovement += HandleOnSignificantClientMovement;
+        }
+
+        public override string GetSimulatorVersion()
+        {
+            return m_simulatorVersion;
+        }
+
+        /// <summary>
+        /// Process the fact that a neighbouring region has come up.
+        /// </summary>
+        /// <remarks>
+        /// We only add it to the neighbor list if it's within 1 region from here.
+        /// Agents may have draw distance values that cross two regions though, so
+        /// we add it to the notify list regardless of distance. We'll check
+        /// the agent's draw distance before notifying them though.
+        /// </remarks>
+        /// <param name="otherRegion">RegionInfo handle for the new region.</param>
+        /// <returns>True after all operations complete, throws exceptions otherwise.</returns>
+        public override void OtherRegionUp(GridRegion otherRegion)
+        {
+            if (RegionInfo.RegionHandle != otherRegion.RegionHandle)
+            {
+                //// If these are cast to INT because long + negative values + abs returns invalid data
+                //int resultX = Math.Abs((int)xcell - (int)RegionInfo.RegionLocX);
+                //int resultY = Math.Abs((int)ycell - (int)RegionInfo.RegionLocY);
+                //if (resultX <= 1 && resultY <= 1)
+                float dist = (float)Math.Max(DefaultDrawDistance,
+                             (float)Math.Max(RegionInfo.RegionSizeX, RegionInfo.RegionSizeY));
+                uint newRegionX, newRegionY, thisRegionX, thisRegionY;
+                Util.RegionHandleToRegionLoc(otherRegion.RegionHandle, out newRegionX, out newRegionY);
+                Util.RegionHandleToRegionLoc(RegionInfo.RegionHandle, out thisRegionX, out thisRegionY);
+
+                //m_log.InfoFormat("[SCENE]: (on region {0}): Region {1} up in coords {2}-{3}",
+                //    RegionInfo.RegionName, otherRegion.RegionName, newRegionX, newRegionY);
+
+                if (!Util.IsOutsideView(dist, thisRegionX, newRegionX, thisRegionY, newRegionY))
+                {
+                    // Let the grid service module know, so this can be cached
+                    m_eventManager.TriggerOnRegionUp(otherRegion);
+
+                    try
+                    {
+                        ForEachRootScenePresence(delegate(ScenePresence agent)
+                        {
+                            //agent.ControllingClient.new
+                            //this.CommsManager.InterRegion.InformRegionOfChildAgent(otherRegion.RegionHandle, agent.ControllingClient.RequestClientInfo());
+
+                            List<ulong> old = new List<ulong>();
+                            old.Add(otherRegion.RegionHandle);
+                            agent.DropOldNeighbours(old);
+                            if (EntityTransferModule != null && agent.PresenceType != PresenceType.Npc)
+                                EntityTransferModule.EnableChildAgent(agent, otherRegion);
+                        });
+                    }
+                    catch (NullReferenceException)
+                    {
+                        // This means that we're not booted up completely yet.
+                        // This shouldn't happen too often anymore.
+                        m_log.Error("[SCENE]: Couldn't inform client of regionup because we got a null reference exception");
+                    }
+                }
+                else
+                {
+                    m_log.InfoFormat(
+                        "[SCENE]: Got notice about far away Region: {0} at ({1}, {2})",
+                        otherRegion.RegionName, otherRegion.RegionLocX, otherRegion.RegionLocY);
+                }
+            }
+        }
+
+        public void AddNeighborRegion(RegionInfo region)
+        {
+            lock (m_neighbours)
+            {
+                if (!CheckNeighborRegion(region))
+                {
+                    m_neighbours.Add(region);
+                }
+            }
+        }
+
+        public bool CheckNeighborRegion(RegionInfo region)
+        {
+            bool found = false;
+            lock (m_neighbours)
+            {
+                foreach (RegionInfo reg in m_neighbours)
+                {
+                    if (reg.RegionHandle == region.RegionHandle)
+                    {
+                        found = true;
+                        break;
+                    }
+                }
+            }
+            return found;
+        }
+
+        // Alias IncomingHelloNeighbour OtherRegionUp, for now
+        public GridRegion IncomingHelloNeighbour(RegionInfo neighbour)
+        {
+            OtherRegionUp(new GridRegion(neighbour));
+            return new GridRegion(RegionInfo);
+        }
+
+        // This causes the region to restart immediatley.
+        public void RestartNow()
+        {
+            IConfig startupConfig = m_config.Configs["Startup"];
+            if (startupConfig != null)
+            {
+                if (startupConfig.GetBoolean("InworldRestartShutsDown", false))
+                {
+                    MainConsole.Instance.RunCommand("shutdown");
+                    return;
+                }
+            }
+
+            m_log.InfoFormat("[REGION]: Restarting region {0}", Name);
+
+            Close();
+
+            base.Restart();
+        }
+
+        // This is a helper function that notifies root agents in this region that a new sim near them has come up
+        // This is in the form of a timer because when an instance of OpenSim.exe is started,
+        // Even though the sims initialize, they don't listen until 'all of the sims are initialized'
+        // If we tell an agent about a sim that's not listening yet, the agent will not be able to connect to it.
+        // subsequently the agent will never see the region come back online.
+        public void RestartNotifyWaitElapsed(object sender, ElapsedEventArgs e)
+        {
+            m_restartWaitTimer.Stop();
+            lock (m_regionRestartNotifyList)
+            {
+                foreach (RegionInfo region in m_regionRestartNotifyList)
+                {
+                    GridRegion r = new GridRegion(region);
+                    try
+                    {
+                        ForEachRootScenePresence(delegate(ScenePresence agent)
+                        {
+                            if (EntityTransferModule != null && agent.PresenceType != PresenceType.Npc)
+                                EntityTransferModule.EnableChildAgent(agent, r);
+                        });
+                    }
+                    catch (NullReferenceException)
+                    {
+                        // This means that we're not booted up completely yet.
+                        // This shouldn't happen too often anymore.
+                    }
+                }
+
+                // Reset list to nothing.
+                m_regionRestartNotifyList.Clear();
+            }
+        }
+
+        public int GetInaccurateNeighborCount()
+        {
+            return m_neighbours.Count;
+        }
+
+        // This is the method that shuts down the scene.
+        public override void Close()
+        {
+            if (m_shuttingDown)
+            {
+                m_log.WarnFormat("[SCENE]: Ignoring close request because already closing {0}", Name);
+                return;
+            }
+
+            m_log.InfoFormat("[SCENE]: Closing down the single simulator: {0}", RegionInfo.RegionName);
+
+            StatsReporter.Close();
+
+            m_restartTimer.Stop();
+            m_restartTimer.Close();
+
+            // Kick all ROOT agents with the message, 'The simulator is going down'
+            ForEachScenePresence(delegate(ScenePresence avatar)
+            {
+                avatar.RemoveNeighbourRegion(RegionInfo.RegionHandle);
+
+                if (!avatar.IsChildAgent)
+                    avatar.ControllingClient.Kick("The simulator is going down.");
+
+                avatar.ControllingClient.SendShutdownConnectionNotice();
+            });
+
+            // Stop updating the scene objects and agents.
+            m_shuttingDown = true;
+
+            // Wait here, or the kick messages won't actually get to the agents before the scene terminates.
+            // We also need to wait to avoid a race condition with the scene update loop which might not yet
+            // have checked ShuttingDown.
+            Thread.Sleep(500);
+
+            // Stop all client threads.
+            ForEachScenePresence(delegate(ScenePresence avatar) { CloseAgent(avatar.UUID, false); });
+
+            m_log.Debug("[SCENE]: Persisting changed objects");
+            EventManager.TriggerSceneShuttingDown(this);
+            Backup(false);
+            m_sceneGraph.Close();
+
+            if (!GridService.DeregisterRegion(RegionInfo.RegionID))
+                m_log.WarnFormat("[SCENE]: Deregister from grid failed for region {0}", Name);
+
+            base.Close();
+
+            // XEngine currently listens to the EventManager.OnShutdown event to trigger script stop and persistence.
+            // Therefore. we must dispose of the PhysicsScene after this to prevent a window where script code can
+            // attempt to reference a null or disposed physics scene.
+            if (PhysicsScene != null)
+            {
+                PhysicsScene phys = PhysicsScene;
+                // remove the physics engine from both Scene and SceneGraph
+                PhysicsScene = null;
+                phys.Dispose();
+                phys = null;
+            }
+        }
+
+        public override void Start()
+        {
+            Start(true);
+        }
+
+        /// <summary>
+        /// Start the scene
+        /// </summary>
+        /// <param name='startScripts'>
+        /// Start the scripts within the scene.
+        /// </param> 
+        public void Start(bool startScripts)
+        {
+            if (IsRunning)
+                return;
+
+            m_isRunning = true;
+            m_active = true;
+
+            m_unixStartTime = Util.UnixTimeSinceEpoch();
+//            m_log.DebugFormat("[SCENE]: Starting Heartbeat timer for {0}", RegionInfo.RegionName);
+            if (m_heartbeatThread != null)
+            {
+                m_heartbeatThread.Abort();
+                m_heartbeatThread = null;
+            }
+
+            m_heartbeatThread
+                = WorkManager.StartThread(
+                    Heartbeat, string.Format("Heartbeat-({0})", RegionInfo.RegionName.Replace(" ", "_")), ThreadPriority.Normal, false, false);
+
+            StartScripts();
+        }
+
+        /// <summary>
+        /// Sets up references to modules required by the scene
+        /// </summary>
+        public void SetModuleInterfaces()
+        {
+            m_xmlrpcModule = RequestModuleInterface<IXMLRPC>();
+            m_worldCommModule = RequestModuleInterface<IWorldComm>();
+            XferManager = RequestModuleInterface<IXfer>();
+            m_AvatarFactory = RequestModuleInterface<IAvatarFactoryModule>();
+            AttachmentsModule = RequestModuleInterface<IAttachmentsModule>();
+            m_serialiser = RequestModuleInterface<IRegionSerialiserModule>();
+            m_dialogModule = RequestModuleInterface<IDialogModule>();
+            m_capsModule = RequestModuleInterface<ICapabilitiesModule>();
+            EntityTransferModule = RequestModuleInterface<IEntityTransferModule>();
+            m_groupsModule = RequestModuleInterface<IGroupsModule>();
+            AgentTransactionsModule = RequestModuleInterface<IAgentAssetTransactions>();
+            UserManagementModule = RequestModuleInterface<IUserManagement>();
+        }
+
+        #endregion
+
+        #region Update Methods
+
+        /// <summary>
+        /// Activate the various loops necessary to continually update the scene.
+        /// </summary>
+        private void Heartbeat()
+        {
+            m_eventManager.TriggerOnRegionStarted(this);
+
+            // The first frame can take a very long time due to physics actors being added on startup.  Therefore,
+            // don't turn on the watchdog alarm for this thread until the second frame, in order to prevent false
+            // alarms for scenes with many objects.
+            Update(1);
+
+            WorkManager.StartThread(
+                Maintenance, string.Format("Maintenance ({0})", RegionInfo.RegionName), ThreadPriority.Normal, false, true);
+
+            Watchdog.GetCurrentThreadInfo().AlarmIfTimeout = true;
+            m_lastFrameTick = Util.EnvironmentTickCount();
+
+            if (UpdateOnTimer)
+            {
+                m_sceneUpdateTimer = new Timer(MinFrameTicks);
+                m_sceneUpdateTimer.AutoReset = true;
+                m_sceneUpdateTimer.Elapsed += Update;
+                m_sceneUpdateTimer.Start();
+            }
+            else
+            {
+                Thread.CurrentThread.Priority = ThreadPriority.Highest;
+                Update(-1);
+                Watchdog.RemoveThread();
+                m_isRunning = false;
+            }
+        }
+
+        private volatile bool m_isTimerUpdateRunning;
+
+        private void Update(object sender, ElapsedEventArgs e)
+        {
+            if (m_isTimerUpdateRunning)
+                return;
+
+            m_isTimerUpdateRunning = true;
+
+            // If the last frame did not complete on time, then immediately start the next update on the same thread
+            // and ignore further timed updates until we have a frame that had spare time.
+            while (!Update(1) && Active) { }
+
+            if (!Active || m_shuttingDown)
+            {
+                m_sceneUpdateTimer.Stop();
+                m_sceneUpdateTimer = null;
+                m_isRunning = false;
+            }
+
+            m_isTimerUpdateRunning = false;
+        }
+
+        private void Maintenance()
+        {
+            DoMaintenance(-1);
+
+            Watchdog.RemoveThread();
+        }
+
+        public void DoMaintenance(int runs)
+        {
+            long? endRun = null;
+            int runtc, tmpMS;
+            int previousMaintenanceTick;
+
+            if (runs >= 0)
+                endRun = MaintenanceRun + runs;
+
+            List<Vector3> coarseLocations;
+            List<UUID> avatarUUIDs;
+
+            while (!m_shuttingDown && ((endRun == null && Active) || MaintenanceRun < endRun))
+            {
+                runtc = Util.EnvironmentTickCount();
+                ++MaintenanceRun;
+
+                // m_log.DebugFormat("[SCENE]: Maintenance run {0} in {1}", MaintenanceRun, Name);
+
+                // Coarse locations relate to positions of green dots on the mini-map (on a SecondLife client)
+                if (MaintenanceRun % (m_update_coarse_locations / 10) == 0)
+                {
+                    SceneGraph.GetCoarseLocations(out coarseLocations, out avatarUUIDs, 60);
+                    // Send coarse locations to clients
+                    ForEachScenePresence(delegate(ScenePresence presence)
+                    {
+                        presence.SendCoarseLocations(coarseLocations, avatarUUIDs);
+                    });
+                }
+
+                if (SendPeriodicAppearanceUpdates && MaintenanceRun % 60 == 0)
+                {
+                    // m_log.DebugFormat("[SCENE]: Sending periodic appearance updates");
+
+                    if (AvatarFactory != null)
+                    {
+                        ForEachRootScenePresence(sp => AvatarFactory.SendAppearance(sp.UUID));
+                    }
+                }
+
+                // Delete temp-on-rez stuff
+                if (MaintenanceRun % m_update_temp_cleaning == 0 && !m_cleaningTemps)
+                {
+                    // m_log.DebugFormat("[SCENE]: Running temp-on-rez cleaning in {0}", Name);
+                    tmpMS = Util.EnvironmentTickCount();
+                    m_cleaningTemps = true;
+
+                    WorkManager.RunInThread(
+                        delegate { CleanTempObjects(); m_cleaningTemps = false; },
+                        null,
+                        string.Format("CleanTempObjects ({0})", Name));
+
+                    tempOnRezMS = Util.EnvironmentTickCountSubtract(tmpMS);
+                }
+
+                Watchdog.UpdateThread();
+
+                previousMaintenanceTick = m_lastMaintenanceTick;
+                m_lastMaintenanceTick = Util.EnvironmentTickCount();
+                runtc = Util.EnvironmentTickCountSubtract(m_lastMaintenanceTick, runtc);
+                runtc = MinMaintenanceTicks - runtc;
+
+                if (runtc > 0)
+                    m_maintenanceWaitEvent.WaitOne(runtc);
+
+                // Optionally warn if a frame takes double the amount of time that it should.
+                if (DebugUpdates
+                    && Util.EnvironmentTickCountSubtract(
+                        m_lastMaintenanceTick, previousMaintenanceTick) > MinMaintenanceTicks * 2)
+                    m_log.WarnFormat(
+                        "[SCENE]: Maintenance took {0} ms (desired max {1} ms) in {2}",
+                        Util.EnvironmentTickCountSubtract(m_lastMaintenanceTick, previousMaintenanceTick),
+                        MinMaintenanceTicks,
+                        RegionInfo.RegionName);
+            }
+        }
+
+        public override bool Update(int frames)
+        {
+            long? endFrame = null;
+
+            if (frames >= 0)
+                endFrame = Frame + frames;
+
+            float physicsFPS = 0f;
+            int previousFrameTick, tmpMS;
+
+            // These variables will be used to save the precise frame time using the
+            // Stopwatch class of Microsoft SDK; the times are recorded at the start
+            // and end of a particular section of code, and then used to calculate
+            // the frame times, which are the sums of the sections for each given name
+            double preciseTotalFrameTime = 0.0;
+            double preciseSimFrameTime = 0.0;
+            double precisePhysicsFrameTime = 0.0;
+            Stopwatch totalFrameStopwatch = new Stopwatch();
+            Stopwatch simFrameStopwatch = new Stopwatch();
+            Stopwatch physicsFrameStopwatch = new Stopwatch();
+
+            // Begin the stopwatch to keep track of the time that the frame
+            // started running to determine how long the frame took to complete
+            totalFrameStopwatch.Start();
+
+            while (!m_shuttingDown && ((endFrame == null && Active) || Frame < endFrame))
+            {
+                ++Frame;
+
+                // m_log.DebugFormat("[SCENE]: Processing frame {0} in {1}", Frame, RegionInfo.RegionName);
+
+                agentMS = eventMS = backupMS = terrainMS = landMS = spareMS = 0;
+
+                try
+                {
+                    EventManager.TriggerRegionHeartbeatStart(this);
+
+                    // Apply taints in terrain module to terrain in physics scene
+                    if (Frame % m_update_terrain == 0)
+                    {
+                        // At several points inside the code there was a need to
+                        // create a more precise measurement of time elapsed. 
+                        // This led to the addition of variables that have a 
+                        // similar function and thus remain tightly connected to 
+                        // their original counterparts. However, the original 
+                        // code is not receiving comments from our group because 
+                        // we don't feel right modifying the code to that degree 
+                        // at this point in time, the precise values all begin 
+                        // with the keyword precise
+                        tmpMS = Util.EnvironmentTickCount();
+                        simFrameStopwatch.Start();
+                        UpdateTerrain();
+
+                        // Get the simulation frame time that the avatar force 
+                        // input took
+                        simFrameStopwatch.Stop();
+                        preciseSimFrameTime =
+                            simFrameStopwatch.Elapsed.TotalMilliseconds;
+                        terrainMS = Util.EnvironmentTickCountSubtract(tmpMS);
+                    }
+
+                    // At several points inside the code there was a need to
+                    // create a more precise measurement of time elapsed. This
+                    // led to the addition of variables that have a similar
+                    // function and thus remain tightly connected to their
+                    // original counterparts. However, the original code is
+                    // not receiving comments from our group because we don't
+                    // feel right modifying the code to that degree at this
+                    // point in time, the precise values all begin with the
+                    // keyword precise
+
+                    tmpMS = Util.EnvironmentTickCount();
+
+                    // Begin the stopwatch to track the time to prepare physics
+                    physicsFrameStopwatch.Start();
+                    if (PhysicsEnabled && Frame % m_update_physics == 0)
+                        m_sceneGraph.UpdatePreparePhysics();
+
+                    // Get the time it took to prepare the physics, this
+                    // would report the most precise time that physics was
+                    // running on the machine and should the physics not be
+                    // enabled will report the time it took to check if physics
+                    // was enabled
+                    physicsFrameStopwatch.Stop();
+                    precisePhysicsFrameTime = physicsFrameStopwatch.Elapsed.TotalMilliseconds;
+                    physicsMS2 = Util.EnvironmentTickCountSubtract(tmpMS);
+
+                    // Apply any pending avatar force input to the avatar's velocity
+                    tmpMS = Util.EnvironmentTickCount();
+                    simFrameStopwatch.Restart();
+                    if (Frame % m_update_entitymovement == 0)
+                        m_sceneGraph.UpdateScenePresenceMovement();
+
+                    // Get the simulation frame time that the avatar force input 
+                    // took
+                    simFrameStopwatch.Stop();
+                    preciseSimFrameTime +=
+                        simFrameStopwatch.Elapsed.TotalMilliseconds;
+                    agentMS = Util.EnvironmentTickCountSubtract(tmpMS);
+
+                    // Perform the main physics update.  This will do the actual work of moving objects and avatars according to their
+                    // velocity
+                    tmpMS = Util.EnvironmentTickCount();
+                    physicsFrameStopwatch.Restart();
+                    if (Frame % m_update_physics == 0)
+                    {
+                        if (PhysicsEnabled)
+                            physicsFPS = m_sceneGraph.UpdatePhysics(MinFrameSeconds);
+
+                        if (SynchronizeScene != null)
+                            SynchronizeScene(this);
+                    }
+
+                    // Add the main physics update time to the prepare physics time
+                    physicsFrameStopwatch.Stop();
+                    precisePhysicsFrameTime += physicsFrameStopwatch.Elapsed.TotalMilliseconds;
+                    physicsMS = Util.EnvironmentTickCountSubtract(tmpMS);
+
+                    // Start the stopwatch for the remainder of the simulation
+                    simFrameStopwatch.Restart();
+                    tmpMS = Util.EnvironmentTickCount();
+
+                    // Check if any objects have reached their targets
+                    CheckAtTargets();
+
+                    // Update SceneObjectGroups that have scheduled themselves for updates
+                    // Objects queue their updates onto all scene presences
+                    if (Frame % m_update_objects == 0)
+                        m_sceneGraph.UpdateObjectGroups();
+
+                    // Run through all ScenePresences looking for updates
+                    // Presence updates and queued object updates for each presence are sent to clients
+                    if (Frame % m_update_presences == 0)
+                        m_sceneGraph.UpdatePresences();
+
+                    agentMS += Util.EnvironmentTickCountSubtract(tmpMS);
+
+                    if (Frame % m_update_events == 0)
+                    {
+                        tmpMS = Util.EnvironmentTickCount();
+                        UpdateEvents();
+                        eventMS = Util.EnvironmentTickCountSubtract(tmpMS);
+                    }
+
+                    if (PeriodicBackup && Frame % m_update_backup == 0)
+                    {
+                        tmpMS = Util.EnvironmentTickCount();
+                        UpdateStorageBackup();
+                        backupMS = Util.EnvironmentTickCountSubtract(tmpMS);
+                    }
+
+                    //if (Frame % m_update_land == 0)
+                    //{
+                    //    int ldMS = Util.EnvironmentTickCount();
+                    //    UpdateLand();
+                    //    landMS = Util.EnvironmentTickCountSubtract(ldMS);
+                    //}
+
+                    if (!LoginsEnabled && Frame == 20)
+                    {
+                        // m_log.DebugFormat("{0} {1} {2}", LoginsDisabled, m_sceneGraph.GetActiveScriptsCount(), LoginLock);
+
+                        // In 99.9% of cases it is a bad idea to manually force garbage collection. However,
+                        // this is a rare case where we know we have just went through a long cycle of heap
+                        // allocations, and there is no more work to be done until someone logs in
+                        GC.Collect();
+
+                        if (!LoginLock)
+                        {
+                            if (!StartDisabled)
+                            {
+                                m_log.InfoFormat("[REGION]: Enabling logins for {0}", RegionInfo.RegionName);
+                                LoginsEnabled = true;
+                            }
+
+                            m_sceneGridService.InformNeighborsThatRegionisUp(
+                            RequestModuleInterface<INeighbourService>(), RegionInfo);
+
+                            // Region ready should always be set
+                            Ready = true;
+                        }
+                        else
+                        {
+                            // This handles a case of a region having no scripts for the RegionReady module
+                            if (m_sceneGraph.GetActiveScriptsCount() == 0)
+                            {
+                                // In this case, we leave it to the IRegionReadyModule to enable logins
+
+                                // LoginLock can currently only be set by a region module implementation.
+                                // If somehow this hasn't been done then the quickest way to bugfix is to see the
+                                // NullReferenceException
+                                IRegionReadyModule rrm = RequestModuleInterface<IRegionReadyModule>();
+                                rrm.TriggerRegionReady(this);
+                            }
+                        }
+                    }
+                }
+                catch (Exception e)
+                {
+                    m_log.ErrorFormat(
+                        "[SCENE]: Failed on region {0} with exception {1}{2}",
+                        RegionInfo.RegionName, e.Message, e.StackTrace);
+                }
+
+                EventManager.TriggerRegionHeartbeatEnd(this);
+                otherMS = eventMS + backupMS + terrainMS + landMS;
+
+                // Get the elapsed time for the simulation frame
+                simFrameStopwatch.Stop();
+                preciseSimFrameTime +=
+                    simFrameStopwatch.Elapsed.TotalMilliseconds;
+
+                if (!UpdateOnTimer)
+                {
+                    Watchdog.UpdateThread();
+
+                    spareMS = MinFrameTicks - Util.EnvironmentTickCountSubtract(m_lastFrameTick);
+
+                    if (spareMS > 0)
+                        m_updateWaitEvent.WaitOne(spareMS);
+                    else
+                        spareMS = 0;
+                }
+                else
+                {
+                    spareMS = Math.Max(0, MinFrameTicks - physicsMS2 - agentMS - physicsMS - otherMS);
+                }
+
+                // Get the total frame time
+                totalFrameStopwatch.Stop();
+                preciseTotalFrameTime =
+                    totalFrameStopwatch.Elapsed.TotalMilliseconds;
+
+                // Restart the stopwatch for the total time of the next frame
+                totalFrameStopwatch.Restart();
+
+                previousFrameTick = m_lastFrameTick;
+                frameMS = Util.EnvironmentTickCountSubtract(m_lastFrameTick);
+                m_lastFrameTick = Util.EnvironmentTickCount();
+
+                // if (Frame%m_update_avatars == 0)
+                //   UpdateInWorldTime();
+                StatsReporter.AddPhysicsFPS(physicsFPS);
+                StatsReporter.AddTimeDilation(TimeDilation);
+                StatsReporter.AddFPS(1);
+
+                StatsReporter.addFrameMS(frameMS);
+                StatsReporter.addAgentMS(agentMS);
+                StatsReporter.addPhysicsMS(physicsMS + physicsMS2);
+                StatsReporter.addOtherMS(otherMS);
+                StatsReporter.AddSpareMS(spareMS);
+                StatsReporter.addScriptLines(m_sceneGraph.GetScriptLPS());
+                StatsReporter.AddScriptMS((int) GetAndResetScriptExecutionTime());
+
+                // Send the correct time values to the stats reporter for the
+                // frame times
+                StatsReporter.addFrameTimeMilliseconds(preciseTotalFrameTime,
+                    preciseSimFrameTime, precisePhysicsFrameTime, 0.0);
+
+                // Send the correct number of frames that the physics library
+                // has processed to the stats reporter
+                StatsReporter.addPhysicsFrame(1);
+
+                // Optionally warn if a frame takes double the amount of time that it should.
+                if (DebugUpdates
+                    && Util.EnvironmentTickCountSubtract(
+                        m_lastFrameTick, previousFrameTick) > MinFrameTicks * 2)
+                    m_log.WarnFormat(
+                        "[SCENE]: Frame took {0} ms (desired max {1} ms) in {2}",
+                        Util.EnvironmentTickCountSubtract(m_lastFrameTick, previousFrameTick),
+                        MinFrameTicks,
+                        RegionInfo.RegionName);
+            }
+
+            // Finished updating scene frame, so stop the total frame's Stopwatch
+            totalFrameStopwatch.Stop();
+
+            return spareMS >= 0;
+        }
+
+        /// <summary>
+        /// Adds the execution time of one script to the total scripts execution time for this region.
+        /// </summary>
+        /// <param name="ticks">Elapsed Stopwatch ticks</param>
+        public void AddScriptExecutionTime(long ticks)
+        {
+            Interlocked.Add(ref m_scriptExecutionTime, ticks);
+        }
+
+        /// <summary>
+        /// Returns the total execution time of all the scripts in the region since the last frame
+        /// (in milliseconds), and clears the value in preparation for the next frame.
+        /// </summary>
+        /// <returns>Time in milliseconds</returns>
+        private long GetAndResetScriptExecutionTime()
+        {
+            long ticks = Interlocked.Exchange(ref m_scriptExecutionTime, 0);
+            return (ticks * 1000) / Stopwatch.Frequency;
+        }
+
+        public void AddGroupTarget(SceneObjectGroup grp)
+        {
+            lock (m_groupsWithTargets)
+                m_groupsWithTargets[grp.UUID] = grp;
+        }
+
+        public void RemoveGroupTarget(SceneObjectGroup grp)
+        {
+            lock (m_groupsWithTargets)
+                m_groupsWithTargets.Remove(grp.UUID);
+        }
+
+        private void CheckAtTargets()
+        {
+            List<SceneObjectGroup> objs = null;
+
+            lock (m_groupsWithTargets)
+            {
+                if (m_groupsWithTargets.Count != 0)
+                    objs = new List<SceneObjectGroup>(m_groupsWithTargets.Values);
+            }
+
+            if (objs != null)
+            {
+                foreach (SceneObjectGroup entry in objs)
+                    entry.checkAtTargets();
+            }
+        }
+
+        /// <summary>
+        /// Send out simstats data to all clients
+        /// </summary>
+        /// <param name="stats">Stats on the Simulator's performance</param>
+        private void SendSimStatsPackets(SimStats stats)
+        {
+            ForEachRootClient(delegate(IClientAPI client)
+            {
+                client.SendSimStats(stats);
+            });
+        }
+
+        /// <summary>
+        /// Update the terrain if it needs to be updated.
+        /// </summary>
+        private void UpdateTerrain()
+        {
+            EventManager.TriggerTerrainTick();
+        }
+
+        /// <summary>
+        /// Back up queued up changes
+        /// </summary>
+        private void UpdateStorageBackup()
+        {
+            if (!m_backingup)
+            {
+                m_backingup = true;
+                WorkManager.RunInThread(o => Backup(false), null, string.Format("BackupWaitCallback ({0})", Name));
+            }
+        }
+
+        /// <summary>
+        /// Sends out the OnFrame event to the modules
+        /// </summary>
+        private void UpdateEvents()
+        {
+            m_eventManager.TriggerOnFrame();
+        }
+
+        /// <summary>
+        /// Backup the scene.
+        /// </summary>
+        /// <remarks>
+        /// This acts as the main method of the backup thread.  In a regression test whether the backup thread is not
+        /// running independently this can be invoked directly.
+        /// </remarks>
+        /// <param name="forced">
+        /// If true, then any changes that have not yet been persisted are persisted.  If false,
+        /// then the persistence decision is left to the backup code (in some situations, such as object persistence,
+        /// it's much more efficient to backup multiple changes at once rather than every single one).
+        /// <returns></returns>
+        public void Backup(bool forced)
+        {
+            lock (m_returns)
+            {
+                EventManager.TriggerOnBackup(SimulationDataService, forced);
+                m_backingup = false;
+
+                foreach (KeyValuePair<UUID, ReturnInfo> ret in m_returns)
+                {
+                    UUID transaction = UUID.Random();
+
+                    GridInstantMessage msg = new GridInstantMessage();
+                    msg.fromAgentID = new Guid(UUID.Zero.ToString()); // From server
+                    msg.toAgentID = new Guid(ret.Key.ToString());
+                    msg.imSessionID = new Guid(transaction.ToString());
+                    msg.timestamp = (uint)Util.UnixTimeSinceEpoch();
+                    msg.fromAgentName = "Server";
+                    msg.dialog = (byte)19; // Object msg
+                    msg.fromGroup = false;
+                    msg.offline = (byte)0;
+                    msg.ParentEstateID = RegionInfo.EstateSettings.ParentEstateID;
+                    msg.Position = Vector3.Zero;
+                    msg.RegionID = RegionInfo.RegionID.Guid;
+
+                    // We must fill in a null-terminated 'empty' string here since bytes[0] will crash viewer 3.
+                    msg.binaryBucket = Util.StringToBytes256("\0");
+                    if (ret.Value.count > 1)
+                        msg.message = string.Format("Your {0} objects were returned from {1} in region {2} due to {3}", ret.Value.count, ret.Value.location.ToString(), RegionInfo.RegionName, ret.Value.reason);
+                    else
+                        msg.message = string.Format("Your object {0} was returned from {1} in region {2} due to {3}", ret.Value.objectName, ret.Value.location.ToString(), RegionInfo.RegionName, ret.Value.reason);
+
+                    IMessageTransferModule tr = RequestModuleInterface<IMessageTransferModule>();
+                    if (tr != null)
+                        tr.SendInstantMessage(msg, delegate(bool success) { });
+                }
+                m_returns.Clear();
+            }
+        }
+
+        /// <summary>
+        /// Synchronous force backup.  For deletes and links/unlinks
+        /// </summary>
+        /// <param name="group">Object to be backed up</param>
+        public void ForceSceneObjectBackup(SceneObjectGroup group)
+        {
+            if (group != null)
+            {
+                group.HasGroupChanged = true;
+                group.ProcessBackup(SimulationDataService, true);
+            }
+        }
+
+        /// <summary>
+        /// Tell an agent that their object has been returned. 
+        /// </summary>
+        /// <remarks>
+        /// The actual return is handled by the caller.
+        /// </remarks>
+        /// <param name="agentID">Avatar Unique Id</param>
+        /// <param name="objectName">Name of object returned</param>
+        /// <param name="location">Location of object returned</param>
+        /// <param name="reason">Reasion for object return</param>
+        public void AddReturn(UUID agentID, string objectName, Vector3 location, string reason)
+        {
+            lock (m_returns)
+            {
+                if (m_returns.ContainsKey(agentID))
+                {
+                    ReturnInfo info = m_returns[agentID];
+                    info.count++;
+                    m_returns[agentID] = info;
+                }
+                else
+                {
+                    ReturnInfo info = new ReturnInfo();
+                    info.count = 1;
+                    info.objectName = objectName;
+                    info.location = location;
+                    info.reason = reason;
+                    m_returns[agentID] = info;
+                }
+            }
+        }
+
+        #endregion
+
+        #region Load Terrain
+
+        /// <summary>
+        /// Store the terrain in the persistant data store
+        /// </summary>
+        public void SaveTerrain()
+        {
+            SimulationDataService.StoreTerrain(Heightmap.GetDoubles(), RegionInfo.RegionID);
+        }
+
+        public void StoreWindlightProfile(RegionLightShareData wl)
+        {
+            RegionInfo.WindlightSettings = wl;
+            SimulationDataService.StoreRegionWindlightSettings(wl);
+            m_eventManager.TriggerOnSaveNewWindlightProfile();
+        }
+
+        public void LoadWindlightProfile()
+        {
+            RegionInfo.WindlightSettings = SimulationDataService.LoadRegionWindlightSettings(RegionInfo.RegionID);
+            m_eventManager.TriggerOnSaveNewWindlightProfile();
+        }
+
+        /// <summary>
+        /// Loads the World heightmap
+        /// </summary>
+        public override void LoadWorldMap()
+        {
+            try
+            {
+                TerrainData map = SimulationDataService.LoadTerrain(RegionInfo.RegionID, (int)RegionInfo.RegionSizeX, (int)RegionInfo.RegionSizeY, (int)RegionInfo.RegionSizeZ);
+                if (map == null)
+                {
+                    // This should be in the Terrain module, but it isn't because
+                    // the heightmap is needed _way_ before the modules are initialized...
+                    IConfig terrainConfig = m_config.Configs["Terrain"];
+                    String m_InitialTerrain = "pinhead-island";
+                    if (terrainConfig != null)
+                        m_InitialTerrain = terrainConfig.GetString("InitialTerrain", m_InitialTerrain);
+
+                    m_log.InfoFormat("[TERRAIN]: No default terrain. Generating a new terrain {0}.", m_InitialTerrain);
+                    Heightmap = new TerrainChannel(m_InitialTerrain, (int)RegionInfo.RegionSizeX, (int)RegionInfo.RegionSizeY, (int)RegionInfo.RegionSizeZ);
+
+                    SimulationDataService.StoreTerrain(Heightmap.GetDoubles(), RegionInfo.RegionID);
+                }
+                else
+                {
+                    Heightmap = new TerrainChannel(map);
+                }
+            }
+            catch (IOException e)
+            {
+                m_log.WarnFormat(
+                    "[TERRAIN]: Scene.cs: LoadWorldMap() - Regenerating as failed with exception {0}{1}",
+                    e.Message, e.StackTrace);
+
+                // Non standard region size.    If there's an old terrain in the database, it might read past the buffer
+#pragma warning disable 0162
+                if ((int)Constants.RegionSize != 256)
+                {
+                    Heightmap = new TerrainChannel();
+
+                    SimulationDataService.StoreTerrain(Heightmap.GetDoubles(), RegionInfo.RegionID);
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.WarnFormat(
+                    "[TERRAIN]: Scene.cs: LoadWorldMap() - Failed with exception {0}{1}", e.Message, e.StackTrace);
+            }
+        }
+
+        /// <summary>
+        /// Register this region with a grid service
+        /// </summary>
+        /// <exception cref="System.Exception">Thrown if registration of the region itself fails.</exception>
+        public void RegisterRegionWithGrid()
+        {
+            m_sceneGridService.SetScene(this);
+
+            //// Unfortunately this needs to be here and it can't be async.
+            //// The map tile image is stored in RegionSettings, but it also needs to be
+            //// stored in the GridService, because that's what the world map module uses
+            //// to send the map image UUIDs (of other regions) to the viewer...
+            if (m_generateMaptiles)
+            RegenerateMaptile();
+
+            GridRegion region = new GridRegion(RegionInfo);
+            string error = GridService.RegisterRegion(RegionInfo.ScopeID, region);
+            // m_log.DebugFormat("[SCENE]: RegisterRegionWithGrid. name={0},id={1},loc=<{2},{3}>,size=<{4},{5}>",
+            //                    m_regionName, 
+            //                    RegionInfo.RegionID,
+            //                    RegionInfo.RegionLocX, RegionInfo.RegionLocY,
+            //                    RegionInfo.RegionSizeX, RegionInfo.RegionSizeY);
+
+            if (error != String.Empty)
+                throw new Exception(error);
+        }
+
+        #endregion
+
+        #region Load Land
+
+        /// <summary>
+        /// Loads all Parcel data from the datastore for region identified by regionID
+        /// </summary>
+        /// <param name="regionID">Unique Identifier of the Region to load parcel data for</param>
+        public void loadAllLandObjectsFromStorage(UUID regionID)
+        {
+            m_log.Info("[SCENE]: Loading land objects from storage");
+            List<LandData> landData = SimulationDataService.LoadLandObjects(regionID);
+
+            if (LandChannel != null)
+            {
+                if (landData.Count == 0)
+                {
+                    EventManager.TriggerNoticeNoLandDataFromStorage();
+                }
+                else
+                {
+                    EventManager.TriggerIncomingLandDataFromStorage(landData);
+                }
+            }
+            else
+            {
+                m_log.Error("[SCENE]: Land Channel is not defined. Cannot load from storage!");
+            }
+        }
+
+        #endregion
+
+        #region Primitives Methods
+
+        /// <summary>
+        /// Loads the World's objects
+        /// </summary>
+        /// <param name="regionID"></param>
+        public virtual void LoadPrimsFromStorage(UUID regionID)
+        {
+            LoadingPrims = true;
+            m_log.Info("[SCENE]: Loading objects from datastore");
+
+            List<SceneObjectGroup> PrimsFromDB = SimulationDataService.LoadObjects(regionID);
+
+            m_log.InfoFormat("[SCENE]: Loaded {0} objects from the datastore", PrimsFromDB.Count);
+
+            foreach (SceneObjectGroup group in PrimsFromDB)
+            {
+                AddRestoredSceneObject(group, true, true);
+                EventManager.TriggerOnSceneObjectLoaded(group);
+                SceneObjectPart rootPart = group.GetPart(group.UUID);
+                rootPart.Flags &= ~PrimFlags.Scripted;
+                rootPart.TrimPermissions();
+
+                // Don't do this here - it will get done later on when sculpt data is loaded.
+                //                group.CheckSculptAndLoad();
+            }
+
+            LoadingPrims = false;
+            EventManager.TriggerPrimsLoaded(this);
+        }
+
+        public bool SupportsRayCastFiltered()
+        {
+            if (PhysicsScene == null)
+                return false;
+            return PhysicsScene.SupportsRaycastWorldFiltered();
+        }
+
+        public object RayCastFiltered(Vector3 position, Vector3 direction, float length, int Count, RayFilterFlags filter)
+        {
+            if (PhysicsScene == null)
+                return null;
+            return PhysicsScene.RaycastWorld(position, direction, length, Count, filter);
+        }
+
+        /// <summary>
+        /// Gets a new rez location based on the raycast and the size of the object that is being rezzed.
+        /// </summary>
+        /// <param name="RayStart"></param>
+        /// <param name="RayEnd"></param>
+        /// <param name="RayTargetID"></param>
+        /// <param name="rot"></param>
+        /// <param name="bypassRayCast"></param>
+        /// <param name="RayEndIsIntersection"></param>
+        /// <param name="frontFacesOnly"></param>
+        /// <param name="scale"></param>
+        /// <param name="FaceCenter"></param>
+        /// <returns></returns>
+        public Vector3 GetNewRezLocation(Vector3 RayStart, Vector3 RayEnd, UUID RayTargetID, Quaternion rot, byte bypassRayCast, byte RayEndIsIntersection, bool frontFacesOnly, Vector3 scale, bool FaceCenter)
+        {
+            Vector3 pos = Vector3.Zero;
+            if (RayEndIsIntersection == (byte)1)
+            {
+                pos = RayEnd;
+                return pos;
+            }
+
+            if (RayTargetID != UUID.Zero)
+            {
+                SceneObjectPart target = GetSceneObjectPart(RayTargetID);
+
+                Vector3 direction = Vector3.Normalize(RayEnd - RayStart);
+                Vector3 AXOrigin = RayStart;
+                Vector3 AXdirection = direction;
+
+                if (target != null)
+                {
+                    pos = target.AbsolutePosition;
+                    //m_log.Info("[OBJECT_REZ]: TargetPos: " + pos.ToString() + ", RayStart: " + RayStart.ToString() + ", RayEnd: " + RayEnd.ToString() + ", Volume: " + Util.GetDistanceTo(RayStart,RayEnd).ToString() + ", mag1: " + Util.GetMagnitude(RayStart).ToString() + ", mag2: " + Util.GetMagnitude(RayEnd).ToString());
+
+                    // TODO: Raytrace better here
+
+                    //EntityIntersection ei = m_sceneGraph.GetClosestIntersectingPrim(new Ray(AXOrigin, AXdirection));
+                    Ray NewRay = new Ray(AXOrigin, AXdirection);
+
+                    // Ray Trace against target here
+                    EntityIntersection ei = target.TestIntersectionOBB(NewRay, Quaternion.Identity, frontFacesOnly, FaceCenter);
+
+                    // Un-comment out the following line to Get Raytrace results printed to the console.
+                    // m_log.Info("[RAYTRACERESULTS]: Hit:" + ei.HitTF.ToString() + " Point: " + ei.ipoint.ToString() + " Normal: " + ei.normal.ToString());
+                    float ScaleOffset = 0.5f;
+
+                    // If we hit something
+                    if (ei.HitTF)
+                    {
+                        Vector3 scaleComponent = ei.AAfaceNormal;
+                        if (scaleComponent.X != 0) ScaleOffset = scale.X;
+                        if (scaleComponent.Y != 0) ScaleOffset = scale.Y;
+                        if (scaleComponent.Z != 0) ScaleOffset = scale.Z;
+                        ScaleOffset = Math.Abs(ScaleOffset);
+                        Vector3 intersectionpoint = ei.ipoint;
+                        Vector3 normal = ei.normal;
+                        // Set the position to the intersection point
+                        Vector3 offset = (normal * (ScaleOffset / 2f));
+                        pos = (intersectionpoint + offset);
+
+                        //Seems to make no sense to do this as this call is used for rezzing from inventory as well, and with inventory items their size is not always 0.5f
+                        //And in cases when we weren't rezzing from inventory we were re-adding the 0.25 straight after calling this method
+                        // Un-offset the prim (it gets offset later by the consumer method)
+                        //pos.Z -= 0.25F; 
+
+                    }
+
+                    return pos;
+                }
+                else
+                {
+                    // We don't have a target here, so we're going to raytrace all the objects in the scene.
+
+                    EntityIntersection ei = m_sceneGraph.GetClosestIntersectingPrim(new Ray(AXOrigin, AXdirection), true, false);
+
+                    // Un-comment the following line to print the raytrace results to the console.
+                    //m_log.Info("[RAYTRACERESULTS]: Hit:" + ei.HitTF.ToString() + " Point: " + ei.ipoint.ToString() + " Normal: " + ei.normal.ToString());
+
+                    if (ei.HitTF)
+                    {
+                        pos = ei.ipoint;
+                    }
+                    else
+                    {
+                        // fall back to our stupid functionality
+                        pos = RayEnd;
+                    }
+
+                    return pos;
+                }
+            }
+            else
+            {
+                // fall back to our stupid functionality
+                pos = RayEnd;
+
+                //increase height so its above the ground.
+                //should be getting the normal of the ground at the rez point and using that?
+                pos.Z += scale.Z / 2f;
+                return pos;
+            }
+        }
+
+
+        /// <summary>
+        /// Create a New SceneObjectGroup/Part by raycasting
+        /// </summary>
+        /// <param name="ownerID"></param>
+        /// <param name="groupID"></param>
+        /// <param name="RayEnd"></param>
+        /// <param name="rot"></param>
+        /// <param name="shape"></param>
+        /// <param name="bypassRaycast"></param>
+        /// <param name="RayStart"></param>
+        /// <param name="RayTargetID"></param>
+        /// <param name="RayEndIsIntersection"></param>
+        public virtual void AddNewPrim(UUID ownerID, UUID groupID, Vector3 RayEnd, Quaternion rot, PrimitiveBaseShape shape,
+                                       byte bypassRaycast, Vector3 RayStart, UUID RayTargetID,
+                                       byte RayEndIsIntersection)
+        {
+            Vector3 pos = GetNewRezLocation(RayStart, RayEnd, RayTargetID, rot, bypassRaycast, RayEndIsIntersection, true, new Vector3(0.5f, 0.5f, 0.5f), false);
+
+            if (Permissions.CanRezObject(1, ownerID, pos))
+            {
+                // rez ON the ground, not IN the ground
+                // pos.Z += 0.25F; The rez point should now be correct so that its not in the ground
+
+                AddNewPrim(ownerID, groupID, pos, rot, shape);
+            }
+            else
+            {
+                IClientAPI client = null;
+                if (TryGetClient(ownerID, out client))
+                    client.SendAlertMessage("You cannot create objects here.");
+            }
+        }
+
+        public virtual SceneObjectGroup AddNewPrim(
+            UUID ownerID, UUID groupID, Vector3 pos, Quaternion rot, PrimitiveBaseShape shape)
+        {
+            //m_log.DebugFormat(
+            //    "[SCENE]: Scene.AddNewPrim() pcode {0} called for {1} in {2}", shape.PCode, ownerID, RegionInfo.RegionName);
+
+            SceneObjectGroup sceneObject = null;
+
+            // If an entity creator has been registered for this prim type then use that
+            if (m_entityCreators.ContainsKey((PCode)shape.PCode))
+            {
+                sceneObject = m_entityCreators[(PCode)shape.PCode].CreateEntity(ownerID, groupID, pos, rot, shape);
+            }
+            else
+            {
+                // Otherwise, use this default creation code;
+                sceneObject = new SceneObjectGroup(ownerID, pos, rot, shape);
+                AddNewSceneObject(sceneObject, true);
+                sceneObject.SetGroup(groupID, null);
+            }
+
+            if (UserManagementModule != null)
+                sceneObject.RootPart.CreatorIdentification = UserManagementModule.GetUserUUI(ownerID);
+
+            sceneObject.ScheduleGroupForFullUpdate();
+
+            return sceneObject;
+        }
+
+        /// <summary>
+        /// Add an object into the scene that has come from storage
+        /// </summary>
+        ///
+        /// <param name="sceneObject"></param>
+        /// <param name="attachToBackup">
+        /// If true, changes to the object will be reflected in its persisted data
+        /// If false, the persisted data will not be changed even if the object in the scene is changed
+        /// </param>
+        /// <param name="alreadyPersisted">
+        /// If true, we won't persist this object until it changes
+        /// If false, we'll persist this object immediately
+        /// </param>
+        /// <param name="sendClientUpdates">
+        /// If true, we send updates to the client to tell it about this object
+        /// If false, we leave it up to the caller to do this
+        /// </param>
+        /// <returns>
+        /// true if the object was added, false if an object with the same uuid was already in the scene
+        /// </returns>
+        public bool AddRestoredSceneObject(
+            SceneObjectGroup sceneObject, bool attachToBackup, bool alreadyPersisted, bool sendClientUpdates)
+        {
+            if (m_sceneGraph.AddRestoredSceneObject(sceneObject, attachToBackup, alreadyPersisted, sendClientUpdates))
+            {
+                EventManager.TriggerObjectAddedToScene(sceneObject);
+                return true;
+            }
+
+            return false;
+
+        }
+
+        /// <summary>
+        /// Add an object into the scene that has come from storage
+        /// </summary>
+        ///
+        /// <param name="sceneObject"></param>
+        /// <param name="attachToBackup">
+        /// If true, changes to the object will be reflected in its persisted data
+        /// If false, the persisted data will not be changed even if the object in the scene is changed
+        /// </param>
+        /// <param name="alreadyPersisted">
+        /// If true, we won't persist this object until it changes
+        /// If false, we'll persist this object immediately
+        /// </param>
+        /// <returns>
+        /// true if the object was added, false if an object with the same uuid was already in the scene
+        /// </returns>
+        public bool AddRestoredSceneObject(
+            SceneObjectGroup sceneObject, bool attachToBackup, bool alreadyPersisted)
+        {
+            return AddRestoredSceneObject(sceneObject, attachToBackup, alreadyPersisted, true);
+        }
+
+        /// <summary>
+        /// Add a newly created object to the scene.  Updates are also sent to viewers.
+        /// </summary>
+        /// <param name="sceneObject"></param>
+        /// <param name="attachToBackup">
+        /// If true, the object is made persistent into the scene.
+        /// If false, the object will not persist over server restarts
+        /// </param>
+        /// <returns>true if the object was added.  false if not</returns>
+        public bool AddNewSceneObject(SceneObjectGroup sceneObject, bool attachToBackup)
+        {
+            return AddNewSceneObject(sceneObject, attachToBackup, true);
+        }
+
+        /// <summary>
+        /// Add a newly created object to the scene
+        /// </summary>
+        /// <param name="sceneObject"></param>
+        /// <param name="attachToBackup">
+        /// If true, the object is made persistent into the scene.
+        /// If false, the object will not persist over server restarts
+        /// </param>
+        /// <param name="sendClientUpdates">
+        /// If true, updates for the new scene object are sent to all viewers in range.
+        /// If false, it is left to the caller to schedule the update
+        /// </param>
+        /// <returns>true if the object was added.  false if not</returns>
+        public bool AddNewSceneObject(SceneObjectGroup sceneObject, bool attachToBackup, bool sendClientUpdates)
+        {
+            if (m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, sendClientUpdates))
+            {
+                EventManager.TriggerObjectAddedToScene(sceneObject);
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Add a newly created object to the scene.
+        /// </summary>
+        /// <remarks>
+        /// This method does not send updates to the client - callers need to handle this themselves.
+        /// </remarks>
+        /// <param name="sceneObject"></param>
+        /// <param name="attachToBackup"></param>
+        /// <param name="pos">Position of the object.  If null then the position stored in the object is used.</param>
+        /// <param name="rot">Rotation of the object.  If null then the rotation stored in the object is used.</param>
+        /// <param name="vel">Velocity of the object.  This parameter only has an effect if the object is physical</param>
+        /// <returns></returns>
+        public bool AddNewSceneObject(
+            SceneObjectGroup sceneObject, bool attachToBackup, Vector3? pos, Quaternion? rot, Vector3 vel)
+        {
+            if (m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, pos, rot, vel))
+            {
+                EventManager.TriggerObjectAddedToScene(sceneObject);
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Delete every object from the scene.  This does not include attachments worn by avatars.
+        /// </summary>
+        public void DeleteAllSceneObjects()
+        {
+            lock (Entities)
+            {
+                EntityBase[] entities = Entities.GetEntities();
+                foreach (EntityBase e in entities)
+                {
+                    if (e is SceneObjectGroup)
+                    {
+                        SceneObjectGroup sog = (SceneObjectGroup)e;
+                        if (!sog.IsAttachment)
+                            DeleteSceneObject((SceneObjectGroup)e, false);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Synchronously delete the given object from the scene.
+        /// </summary>
+        /// <remarks>
+        /// Scripts are also removed.
+        /// </remarks>
+        /// <param name="group">Object Id</param>
+        /// <param name="silent">Suppress broadcasting changes to other clients.</param>
+        public void DeleteSceneObject(SceneObjectGroup group, bool silent)
+        {
+            DeleteSceneObject(group, silent, true);
+        }
+
+        /// <summary>
+        /// Synchronously delete the given object from the scene.
+        /// </summary>
+        /// <param name="group">Object Id</param>
+        /// <param name="silent">Suppress broadcasting changes to other clients.</param>
+        /// <param name="removeScripts">If true, then scripts are removed.  If false, then they are only stopped.</para>
+        public void DeleteSceneObject(SceneObjectGroup group, bool silent, bool removeScripts)
+        {
+            // m_log.DebugFormat("[SCENE]: Deleting scene object {0} {1}", group.Name, group.UUID);
+
+            if (removeScripts)
+                group.RemoveScriptInstances(true);
+            else
+                group.StopScriptInstances();
+
+            SceneObjectPart[] partList = group.Parts;
+
+            foreach (SceneObjectPart part in partList)
+            {
+                if (part.KeyframeMotion != null)
+                {
+                    part.KeyframeMotion.Delete();
+                    part.KeyframeMotion = null;
+                }
+
+                if (part.IsJoint() && ((part.Flags & PrimFlags.Physics) != 0))
+                {
+                    PhysicsScene.RequestJointDeletion(part.Name); // FIXME: what if the name changed?
+                }
+                else if (part.PhysActor != null)
+                {
+                    part.RemoveFromPhysics();
+                }
+            }
+
+            if (UnlinkSceneObject(group, false))
+            {
+                EventManager.TriggerObjectBeingRemovedFromScene(group);
+                EventManager.TriggerParcelPrimCountTainted();
+            }
+
+            group.DeleteGroupFromScene(silent);
+
+            // m_log.DebugFormat("[SCENE]: Exit DeleteSceneObject() for {0} {1}", group.Name, group.UUID);            
+        }
+
+        /// <summary>
+        /// Unlink the given object from the scene.  Unlike delete, this just removes the record of the object - the
+        /// object itself is not destroyed.
+        /// </summary>
+        /// <param name="so">The scene object.</param>
+        /// <param name="softDelete">If true, only deletes from scene, but keeps the object in the database.</param>
+        /// <returns>true if the object was in the scene, false if it was not</returns>
+        public bool UnlinkSceneObject(SceneObjectGroup so, bool softDelete)
+        {
+            if (m_sceneGraph.DeleteSceneObject(so.UUID, softDelete))
+            {
+                if (!softDelete)
+                {
+                    // If the group contains prims whose SceneGroupID is incorrect then force a
+                    // database update, because RemoveObject() works by searching on the SceneGroupID.
+                    // This is an expensive thing to do so only do it if absolutely necessary.
+                    if (so.GroupContainsForeignPrims)
+                        ForceSceneObjectBackup(so);
+
+                    so.DetachFromBackup();
+                    SimulationDataService.RemoveObject(so.UUID, RegionInfo.RegionID);
+                }
+
+                // We need to keep track of this state in case this group is still queued for further backup.
+                so.IsDeleted = true;
+
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Move the given scene object into a new region depending on which region its absolute position has moved
+        /// into.
+        ///
+        /// </summary>
+        /// <param name="attemptedPosition">the attempted out of region position of the scene object</param>
+        /// <param name="grp">the scene object that we're crossing</param>
+        public void CrossPrimGroupIntoNewRegion(Vector3 attemptedPosition, SceneObjectGroup grp, bool silent)
+        {
+            if (grp == null)
+                return;
+            if (grp.IsDeleted)
+                return;
+
+            if (grp.RootPart.DIE_AT_EDGE)
+            {
+                // We remove the object here
+                try
+                {
+                    DeleteSceneObject(grp, false);
+                }
+                catch (Exception)
+                {
+                    m_log.Warn("[SCENE]: exception when trying to remove the prim that crossed the border.");
+                }
+                return;
+            }
+
+            if (grp.RootPart.RETURN_AT_EDGE)
+            {
+                // We remove the object here
+                try
+                {
+                    List<SceneObjectGroup> objects = new List<SceneObjectGroup>();
+                    objects.Add(grp);
+                    SceneObjectGroup[] objectsArray = objects.ToArray();
+                    returnObjects(objectsArray, UUID.Zero);
+                }
+                catch (Exception)
+                {
+                    m_log.Warn("[SCENE]: exception when trying to return the prim that crossed the border.");
+                }
+                return;
+            }
+
+            if (EntityTransferModule != null)
+                EntityTransferModule.Cross(grp, attemptedPosition, silent);
+        }
+
+        // Simple test to see if a position is in the current region.
+        // This test is mostly used to see if a region crossing is necessary.
+        // Assuming the position is relative to the region so anything outside its bounds.
+        // Return 'true' if position inside region.
+        public bool PositionIsInCurrentRegion(Vector3 pos)
+        {
+            bool ret = false;
+            int xx = (int)Math.Floor(pos.X);
+            int yy = (int)Math.Floor(pos.Y);
+            if (xx < 0 || yy < 0)
+                return false;
+
+            IRegionCombinerModule regionCombinerModule = RequestModuleInterface<IRegionCombinerModule>();
+            if (regionCombinerModule == null)
+            {
+                // Regular region. Just check for region size
+                if (xx < RegionInfo.RegionSizeX && yy < RegionInfo.RegionSizeY)
+                    ret = true;
+            }
+            else
+            {
+                // We're in a mega-region so see if we are still in that larger region
+                ret = regionCombinerModule.PositionIsInMegaregion(this.RegionInfo.RegionID, xx, yy);
+            }
+
+            return ret;
+
+        }
+
+        /// <summary>
+        /// Called when objects or attachments cross the border, or teleport, between regions.
+        /// </summary>
+        /// <param name="sog"></param>
+        /// <returns></returns>
+        public bool IncomingCreateObject(Vector3 newPosition, ISceneObject sog)
+        {
+            //m_log.DebugFormat(" >>> IncomingCreateObject(sog) <<< {0} deleted? {1} isAttach? {2}", ((SceneObjectGroup)sog).AbsolutePosition,
+            //    ((SceneObjectGroup)sog).IsDeleted, ((SceneObjectGroup)sog).RootPart.IsAttachment);
+
+            SceneObjectGroup newObject;
+            try
+            {
+                newObject = (SceneObjectGroup)sog;
+            }
+            catch (Exception e)
+            {
+                m_log.WarnFormat("[INTERREGION]: Problem casting object, exception {0}{1}", e.Message, e.StackTrace);
+                return false;
+            }
+
+            if (!EntityTransferModule.HandleIncomingSceneObject(newObject, newPosition))
+                return false;
+
+            // Do this as late as possible so that listeners have full access to the incoming object
+            EventManager.TriggerOnIncomingSceneObject(newObject);
+
+            return true;
+        }
+
+        /// <summary>
+        /// Adds a Scene Object group to the Scene.
+        /// Verifies that the creator of the object is not banned from the simulator.
+        /// Checks if the item is an Attachment
+        /// </summary>
+        /// <param name="sceneObject"></param>
+        /// <returns>True if the SceneObjectGroup was added, False if it was not</returns>
+        public bool AddSceneObject(SceneObjectGroup sceneObject)
+        {
+            // Force allocation of new LocalId
+            //
+            SceneObjectPart[] parts = sceneObject.Parts;
+            for (int i = 0; i < parts.Length; i++)
+                parts[i].LocalId = 0;
+
+            if (sceneObject.IsAttachmentCheckFull()) // Attachment
+            {
+                sceneObject.RootPart.AddFlag(PrimFlags.TemporaryOnRez);
+                sceneObject.RootPart.AddFlag(PrimFlags.Phantom);
+
+                // Don't sent a full update here because this will cause full updates to be sent twice for 
+                // attachments on region crossings, resulting in viewer glitches.
+                AddRestoredSceneObject(sceneObject, false, false, false);
+
+                // Handle attachment special case
+                SceneObjectPart RootPrim = sceneObject.RootPart;
+
+                // Fix up attachment Parent Local ID
+                ScenePresence sp = GetScenePresence(sceneObject.OwnerID);
+
+                if (sp != null)
+                {
+                    SceneObjectGroup grp = sceneObject;
+
+                    // m_log.DebugFormat(
+                    //     "[ATTACHMENT]: Received attachment {0}, inworld asset id {1}", grp.FromItemID, grp.UUID);
+                    // m_log.DebugFormat(
+                    //     "[ATTACHMENT]: Attach to avatar {0} at position {1}", sp.UUID, grp.AbsolutePosition);
+
+                    RootPrim.RemFlag(PrimFlags.TemporaryOnRez);
+
+                    // We must currently not resume scripts at this stage since AttachmentsModule does not have the 
+                    // information that this is due to a teleport/border cross rather than an ordinary attachment.
+                    // We currently do this in Scene.MakeRootAgent() instead.
+                    if (AttachmentsModule != null)
+                        AttachmentsModule.AttachObject(sp, grp, 0, false, false, true);
+                }
+                else
+                {
+                    RootPrim.RemFlag(PrimFlags.TemporaryOnRez);
+                    RootPrim.AddFlag(PrimFlags.TemporaryOnRez);
+                }
+            }
+            else
+            {
+                AddRestoredSceneObject(sceneObject, true, false);
+            }
+
+            return true;
+        }
+
+        #endregion
+
+        #region Add/Remove Avatar Methods
+
+        public override ISceneAgent AddNewAgent(IClientAPI client, PresenceType type)
+        {
+            ScenePresence sp;
+            bool vialogin;
+            bool reallyNew = true;
+
+            // Update the number of users attempting to login
+            StatsReporter.UpdateUsersLoggingIn(true);
+
+            // Validation occurs in LLUDPServer
+            //
+            // XXX: A race condition exists here where two simultaneous calls to AddNewAgent can interfere with
+            // each other.  In practice, this does not currently occur in the code.
+            AgentCircuitData aCircuit = m_authenticateHandler.GetAgentCircuitData(client.CircuitCode);
+
+            // We lock here on AgentCircuitData to prevent a race condition between the thread adding a new connection
+            // and a simultaneous one that removes it (as can happen if the client is closed at a particular point
+            // whilst connecting).
+            //
+            // It would be easier to lock across all NewUserConnection(), AddNewAgent() and
+            // RemoveClient() calls for all agents, but this would allow a slow call (e.g. because of slow service
+            // response in some module listening to AddNewAgent()) from holding up unrelated agent calls.
+            //
+            // In practice, the lock (this) in LLUDPServer.AddNewClient() currently lock across all
+            // AddNewClient() operations (though not other ops).
+            // In the future this can be relieved once locking per agent (not necessarily on AgentCircuitData) is improved.
+            lock (aCircuit)
+            {
+                vialogin
+                    = (aCircuit.teleportFlags & (uint)Constants.TeleportFlags.ViaHGLogin) != 0
+                        || (aCircuit.teleportFlags & (uint)Constants.TeleportFlags.ViaLogin) != 0;
+
+                // CheckHeartbeat();
+
+                sp = GetScenePresence(client.AgentId);
+
+                // XXX: Not sure how good it is to add a new client if a scene presence already exists.  Possibly this
+                // could occur if a viewer crashes and relogs before the old client is kicked out.  But this could cause
+                // other problems, and possibly the code calling AddNewAgent() should ensure that no client is already
+                // connected.
+                if (sp == null)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Adding new child scene presence {0} {1} to scene {2} at pos {3}",
+                        client.Name, client.AgentId, RegionInfo.RegionName, client.StartPos);
+
+                    sp = m_sceneGraph.CreateAndAddChildScenePresence(client, aCircuit.Appearance, type);
+
+                    // We must set this here so that TriggerOnNewClient and TriggerOnClientLogin can determine whether the
+                    // client is for a root or child agent.
+                    // We must also set this before adding the client to the client manager so that an exception later on
+                    // does not leave a client manager entry without the scene agent set, which will cause other code
+                    // to fail since any entry in the client manager should have a ScenePresence
+                    //
+                    // XXX: This may be better set for a new client before that client is added to the client manager.
+                    // But need to know what happens in the case where a ScenePresence is already present (and if this 
+                    // actually occurs).
+                    client.SceneAgent = sp;
+
+                    m_clientManager.Add(client);
+                    SubscribeToClientEvents(client);
+                    m_eventManager.TriggerOnNewPresence(sp);
+
+                    sp.TeleportFlags = (TPFlags)aCircuit.teleportFlags;
+                }
+                else
+                {
+                    // We must set this here so that TriggerOnNewClient and TriggerOnClientLogin can determine whether the
+                    // client is for a root or child agent.
+                    // XXX: This may be better set for a new client before that client is added to the client manager.
+                    // But need to know what happens in the case where a ScenePresence is already present (and if this 
+                    // actually occurs).
+                    client.SceneAgent = sp;
+
+                    m_log.WarnFormat(
+                        "[SCENE]: Already found {0} scene presence for {1} in {2} when asked to add new scene presence",
+                        sp.IsChildAgent ? "child" : "root", sp.Name, RegionInfo.RegionName);
+
+                    reallyNew = false;
+                }
+
+                // This is currently also being done earlier in NewUserConnection for real users to see if this 
+                // resolves problems where HG agents are occasionally seen by others as "Unknown user" in chat and other
+                // places.  However, we still need to do it here for NPCs.
+                CacheUserName(sp, aCircuit);
+
+                if (reallyNew)
+                    EventManager.TriggerOnNewClient(client);
+
+                if (vialogin)
+                    EventManager.TriggerOnClientLogin(client);
+            }
+
+            // User has logged into the scene so update the list of users logging
+            // in
+            StatsReporter.UpdateUsersLoggingIn(false);
+
+            m_LastLogin = Util.EnvironmentTickCount();
+
+            return sp;
+        }
+
+        /// <summary>
+        /// Returns the Home URI of the agent, or null if unknown.
+        /// </summary>
+        public string GetAgentHomeURI(UUID agentID)
+        {
+            AgentCircuitData circuit = AuthenticateHandler.GetAgentCircuitData(agentID);
+            if (circuit != null && circuit.ServiceURLs != null && circuit.ServiceURLs.ContainsKey("HomeURI"))
+                return circuit.ServiceURLs["HomeURI"].ToString();
+            else
+                return null;
+        }
+
+        /// <summary>
+        /// Cache the user name for later use.
+        /// </summary>
+        /// <param name="sp"></param>
+        /// <param name="aCircuit"></param>
+        private void CacheUserName(ScenePresence sp, AgentCircuitData aCircuit)
+        {
+            if (UserManagementModule != null)
+            {
+                string first = aCircuit.firstname, last = aCircuit.lastname;
+
+                if (sp != null && sp.PresenceType == PresenceType.Npc)
+                {
+                    UserManagementModule.AddUser(aCircuit.AgentID, first, last);
+                }
+                else
+                {
+                    string homeURL = string.Empty;
+
+                    if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
+                        homeURL = aCircuit.ServiceURLs["HomeURI"].ToString();
+
+                    if (aCircuit.lastname.StartsWith("@"))
+                    {
+                        string[] parts = aCircuit.firstname.Split('.');
+                        if (parts.Length >= 2)
+                        {
+                            first = parts[0];
+                            last = parts[1];
+                        }
+                    }
+
+                    UserManagementModule.AddUser(aCircuit.AgentID, first, last, homeURL);
+                }
+            }
+        }
+
+        private bool VerifyClient(AgentCircuitData aCircuit, System.Net.IPEndPoint ep, out bool vialogin)
+        {
+            vialogin = false;
+
+            // Do the verification here
+            if ((aCircuit.teleportFlags & (uint)Constants.TeleportFlags.ViaHGLogin) != 0)
+            {
+                m_log.DebugFormat("[SCENE]: Incoming client {0} {1} in region {2} via HG login", aCircuit.firstname, aCircuit.lastname, RegionInfo.RegionName);
+                vialogin = true;
+                IUserAgentVerificationModule userVerification = RequestModuleInterface<IUserAgentVerificationModule>();
+                if (userVerification != null && ep != null)
+                {
+                    if (!userVerification.VerifyClient(aCircuit, ep.Address.ToString()))
+                    {
+                        // uh-oh, this is fishy
+                        m_log.DebugFormat("[SCENE]: User Client Verification for {0} {1} in {2} returned false", aCircuit.firstname, aCircuit.lastname, RegionInfo.RegionName);
+                        return false;
+                    }
+                    else
+                        m_log.DebugFormat("[SCENE]: User Client Verification for {0} {1} in {2} returned true", aCircuit.firstname, aCircuit.lastname, RegionInfo.RegionName);
+
+                }
+            }
+
+            else if ((aCircuit.teleportFlags & (uint)Constants.TeleportFlags.ViaLogin) != 0)
+            {
+                m_log.DebugFormat("[SCENE]: Incoming client {0} {1} in region {2} via regular login. Client IP verification not performed.",
+                    aCircuit.firstname, aCircuit.lastname, RegionInfo.RegionName);
+                vialogin = true;
+            }
+
+            return true;
+        }
+
+        // Called by Caps, on the first HTTP contact from the client
+        public override bool CheckClient(UUID agentID, System.Net.IPEndPoint ep)
+        {
+            AgentCircuitData aCircuit = m_authenticateHandler.GetAgentCircuitData(agentID);
+            if (aCircuit != null)
+            {
+                bool vialogin = false;
+                if (!VerifyClient(aCircuit, ep, out vialogin))
+                {
+                    // if it doesn't pass, we remove the agentcircuitdata altogether
+                    // and the scene presence and the client, if they exist
+                    try
+                    {
+                        // We need to wait for the client to make UDP contact first.
+                        // It's the UDP contact that creates the scene presence
+                        ScenePresence sp = WaitGetScenePresence(agentID);
+                        if (sp != null)
+                        {
+                            PresenceService.LogoutAgent(sp.ControllingClient.SessionId);
+
+                            CloseAgent(sp.UUID, false);
+                        }
+                        else
+                        {
+                            m_log.WarnFormat("[SCENE]: Could not find scene presence for {0}", agentID);
+                        }
+                        // BANG! SLASH!
+                        m_authenticateHandler.RemoveCircuit(agentID);
+
+                        return false;
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.DebugFormat("[SCENE]: Exception while closing aborted client: {0}", e.StackTrace);
+                    }
+                }
+                else
+                    return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Register for events from the client
+        /// </summary>
+        /// <param name="client">The IClientAPI of the connected client</param>
+        public virtual void SubscribeToClientEvents(IClientAPI client)
+        {
+            SubscribeToClientTerrainEvents(client);
+            SubscribeToClientPrimEvents(client);
+            SubscribeToClientPrimRezEvents(client);
+            SubscribeToClientInventoryEvents(client);
+            SubscribeToClientTeleportEvents(client);
+            SubscribeToClientScriptEvents(client);
+            SubscribeToClientParcelEvents(client);
+            SubscribeToClientGridEvents(client);
+            SubscribeToClientNetworkEvents(client);
+        }
+
+        public virtual void SubscribeToClientTerrainEvents(IClientAPI client)
+        {
+            client.OnRegionHandShakeReply += SendLayerData;
+        }
+
+        public virtual void SubscribeToClientPrimEvents(IClientAPI client)
+        {
+            client.OnUpdatePrimGroupPosition += m_sceneGraph.UpdatePrimGroupPosition;
+            client.OnUpdatePrimSinglePosition += m_sceneGraph.UpdatePrimSinglePosition;
+
+            client.OnUpdatePrimGroupRotation += m_sceneGraph.UpdatePrimGroupRotation;
+            client.OnUpdatePrimGroupMouseRotation += m_sceneGraph.UpdatePrimGroupRotation;
+            client.OnUpdatePrimSingleRotation += m_sceneGraph.UpdatePrimSingleRotation;
+            client.OnUpdatePrimSingleRotationPosition += m_sceneGraph.UpdatePrimSingleRotationPosition;
+
+            client.OnUpdatePrimScale += m_sceneGraph.UpdatePrimScale;
+            client.OnUpdatePrimGroupScale += m_sceneGraph.UpdatePrimGroupScale;
+            client.OnUpdateExtraParams += m_sceneGraph.UpdateExtraParam;
+            client.OnUpdatePrimShape += m_sceneGraph.UpdatePrimShape;
+            client.OnUpdatePrimTexture += m_sceneGraph.UpdatePrimTexture;
+            client.OnObjectRequest += RequestPrim;
+            client.OnObjectSelect += SelectPrim;
+            client.OnObjectDeselect += DeselectPrim;
+            client.OnGrabUpdate += m_sceneGraph.MoveObject;
+            client.OnSpinStart += m_sceneGraph.SpinStart;
+            client.OnSpinUpdate += m_sceneGraph.SpinObject;
+            client.OnDeRezObject += DeRezObjects;
+
+            client.OnObjectName += m_sceneGraph.PrimName;
+            client.OnObjectClickAction += m_sceneGraph.PrimClickAction;
+            client.OnObjectMaterial += m_sceneGraph.PrimMaterial;
+            client.OnLinkObjects += LinkObjects;
+            client.OnDelinkObjects += DelinkObjects;
+            client.OnObjectDuplicate += DuplicateObject;
+            client.OnObjectDuplicateOnRay += doObjectDuplicateOnRay;
+            client.OnUpdatePrimFlags += m_sceneGraph.UpdatePrimFlags;
+            client.OnRequestObjectPropertiesFamily += m_sceneGraph.RequestObjectPropertiesFamily;
+            client.OnObjectPermissions += HandleObjectPermissionsUpdate;
+            client.OnGrabObject += ProcessObjectGrab;
+            client.OnGrabUpdate += ProcessObjectGrabUpdate;
+            client.OnDeGrabObject += ProcessObjectDeGrab;
+            client.OnUndo += m_sceneGraph.HandleUndo;
+            client.OnRedo += m_sceneGraph.HandleRedo;
+            client.OnObjectDescription += m_sceneGraph.PrimDescription;
+            client.OnObjectIncludeInSearch += m_sceneGraph.MakeObjectSearchable;
+            client.OnObjectOwner += ObjectOwner;
+            client.OnObjectGroupRequest += HandleObjectGroupUpdate;
+        }
+
+        public virtual void SubscribeToClientPrimRezEvents(IClientAPI client)
+        {
+            client.OnAddPrim += AddNewPrim;
+            client.OnRezObject += RezObject;
+        }
+
+        public virtual void SubscribeToClientInventoryEvents(IClientAPI client)
+        {
+            client.OnLinkInventoryItem += HandleLinkInventoryItem;
+            client.OnCreateNewInventoryFolder += HandleCreateInventoryFolder;
+            client.OnUpdateInventoryFolder += HandleUpdateInventoryFolder;
+            client.OnMoveInventoryFolder += HandleMoveInventoryFolder; // 2; //!!
+            client.OnFetchInventoryDescendents += HandleFetchInventoryDescendents;
+            client.OnPurgeInventoryDescendents += HandlePurgeInventoryDescendents; // 2; //!!
+            client.OnFetchInventory += m_asyncInventorySender.HandleFetchInventory;
+            client.OnUpdateInventoryItem += UpdateInventoryItemAsset;
+            client.OnCopyInventoryItem += CopyInventoryItem;
+            client.OnMoveInventoryItem += MoveInventoryItem;
+            client.OnRemoveInventoryItem += RemoveInventoryItem;
+            client.OnRemoveInventoryFolder += RemoveInventoryFolder;
+            client.OnRezScript += RezScript;
+            client.OnRequestTaskInventory += RequestTaskInventory;
+            client.OnRemoveTaskItem += RemoveTaskInventory;
+            client.OnUpdateTaskInventory += UpdateTaskInventory;
+            client.OnMoveTaskItem += ClientMoveTaskInventoryItem;
+        }
+
+        public virtual void SubscribeToClientTeleportEvents(IClientAPI client)
+        {
+            client.OnTeleportLocationRequest += RequestTeleportLocation;
+        }
+
+        public virtual void SubscribeToClientScriptEvents(IClientAPI client)
+        {
+            client.OnScriptReset += ProcessScriptReset;
+            client.OnGetScriptRunning += GetScriptRunning;
+            client.OnSetScriptRunning += SetScriptRunning;
+        }
+
+        public virtual void SubscribeToClientParcelEvents(IClientAPI client)
+        {
+            client.OnParcelReturnObjectsRequest += LandChannel.ReturnObjectsInParcel;
+            client.OnParcelSetOtherCleanTime += LandChannel.SetParcelOtherCleanTime;
+            client.OnParcelBuy += ProcessParcelBuy;
+        }
+
+        public virtual void SubscribeToClientGridEvents(IClientAPI client)
+        {
+            //client.OnNameFromUUIDRequest += HandleUUIDNameRequest;
+            client.OnMoneyTransferRequest += ProcessMoneyTransferRequest;
+        }
+
+        public virtual void SubscribeToClientNetworkEvents(IClientAPI client)
+        {
+            client.OnNetworkStatsUpdate += StatsReporter.AddPacketsStats;
+            client.OnViewerEffect += ProcessViewerEffect;
+        }
+
+        /// <summary>
+        /// Unsubscribe the client from events.
+        /// </summary>
+        /// FIXME: Not called anywhere!
+        /// <param name="client">The IClientAPI of the client</param>
+        public virtual void UnSubscribeToClientEvents(IClientAPI client)
+        {
+            UnSubscribeToClientTerrainEvents(client);
+            UnSubscribeToClientPrimEvents(client);
+            UnSubscribeToClientPrimRezEvents(client);
+            UnSubscribeToClientInventoryEvents(client);
+            UnSubscribeToClientTeleportEvents(client);
+            UnSubscribeToClientScriptEvents(client);
+            UnSubscribeToClientParcelEvents(client);
+            UnSubscribeToClientGridEvents(client);
+            UnSubscribeToClientNetworkEvents(client);
+        }
+
+        public virtual void UnSubscribeToClientTerrainEvents(IClientAPI client)
+        {
+            client.OnRegionHandShakeReply -= SendLayerData;
+        }
+
+        public virtual void UnSubscribeToClientPrimEvents(IClientAPI client)
+        {
+            client.OnUpdatePrimGroupPosition -= m_sceneGraph.UpdatePrimGroupPosition;
+            client.OnUpdatePrimSinglePosition -= m_sceneGraph.UpdatePrimSinglePosition;
+
+            client.OnUpdatePrimGroupRotation -= m_sceneGraph.UpdatePrimGroupRotation;
+            client.OnUpdatePrimGroupMouseRotation -= m_sceneGraph.UpdatePrimGroupRotation;
+            client.OnUpdatePrimSingleRotation -= m_sceneGraph.UpdatePrimSingleRotation;
+            client.OnUpdatePrimSingleRotationPosition -= m_sceneGraph.UpdatePrimSingleRotationPosition;
+
+            client.OnUpdatePrimScale -= m_sceneGraph.UpdatePrimScale;
+            client.OnUpdatePrimGroupScale -= m_sceneGraph.UpdatePrimGroupScale;
+            client.OnUpdateExtraParams -= m_sceneGraph.UpdateExtraParam;
+            client.OnUpdatePrimShape -= m_sceneGraph.UpdatePrimShape;
+            client.OnUpdatePrimTexture -= m_sceneGraph.UpdatePrimTexture;
+            client.OnObjectRequest -= RequestPrim;
+            client.OnObjectSelect -= SelectPrim;
+            client.OnObjectDeselect -= DeselectPrim;
+            client.OnGrabUpdate -= m_sceneGraph.MoveObject;
+            client.OnSpinStart -= m_sceneGraph.SpinStart;
+            client.OnSpinUpdate -= m_sceneGraph.SpinObject;
+            client.OnDeRezObject -= DeRezObjects;
+            client.OnObjectName -= m_sceneGraph.PrimName;
+            client.OnObjectClickAction -= m_sceneGraph.PrimClickAction;
+            client.OnObjectMaterial -= m_sceneGraph.PrimMaterial;
+            client.OnLinkObjects -= LinkObjects;
+            client.OnDelinkObjects -= DelinkObjects;
+            client.OnObjectDuplicate -= DuplicateObject;
+            client.OnObjectDuplicateOnRay -= doObjectDuplicateOnRay;
+            client.OnUpdatePrimFlags -= m_sceneGraph.UpdatePrimFlags;
+            client.OnRequestObjectPropertiesFamily -= m_sceneGraph.RequestObjectPropertiesFamily;
+            client.OnObjectPermissions -= HandleObjectPermissionsUpdate;
+            client.OnGrabObject -= ProcessObjectGrab;
+            client.OnDeGrabObject -= ProcessObjectDeGrab;
+            client.OnUndo -= m_sceneGraph.HandleUndo;
+            client.OnRedo -= m_sceneGraph.HandleRedo;
+            client.OnObjectDescription -= m_sceneGraph.PrimDescription;
+            client.OnObjectIncludeInSearch -= m_sceneGraph.MakeObjectSearchable;
+            client.OnObjectOwner -= ObjectOwner;
+        }
+
+        public virtual void UnSubscribeToClientPrimRezEvents(IClientAPI client)
+        {
+            client.OnAddPrim -= AddNewPrim;
+            client.OnRezObject -= RezObject;
+        }
+
+        public virtual void UnSubscribeToClientInventoryEvents(IClientAPI client)
+        {
+            client.OnCreateNewInventoryFolder -= HandleCreateInventoryFolder;
+            client.OnUpdateInventoryFolder -= HandleUpdateInventoryFolder;
+            client.OnMoveInventoryFolder -= HandleMoveInventoryFolder; // 2; //!!
+            client.OnFetchInventoryDescendents -= HandleFetchInventoryDescendents;
+            client.OnPurgeInventoryDescendents -= HandlePurgeInventoryDescendents; // 2; //!!
+            client.OnFetchInventory -= m_asyncInventorySender.HandleFetchInventory;
+            client.OnUpdateInventoryItem -= UpdateInventoryItemAsset;
+            client.OnCopyInventoryItem -= CopyInventoryItem;
+            client.OnMoveInventoryItem -= MoveInventoryItem;
+            client.OnRemoveInventoryItem -= RemoveInventoryItem;
+            client.OnRemoveInventoryFolder -= RemoveInventoryFolder;
+            client.OnRezScript -= RezScript;
+            client.OnRequestTaskInventory -= RequestTaskInventory;
+            client.OnRemoveTaskItem -= RemoveTaskInventory;
+            client.OnUpdateTaskInventory -= UpdateTaskInventory;
+            client.OnMoveTaskItem -= ClientMoveTaskInventoryItem;
+        }
+
+        public virtual void UnSubscribeToClientTeleportEvents(IClientAPI client)
+        {
+            client.OnTeleportLocationRequest -= RequestTeleportLocation;
+            //client.OnTeleportLandmarkRequest -= RequestTeleportLandmark;
+            //client.OnTeleportHomeRequest -= TeleportClientHome;
+        }
+
+        public virtual void UnSubscribeToClientScriptEvents(IClientAPI client)
+        {
+            client.OnScriptReset -= ProcessScriptReset;
+            client.OnGetScriptRunning -= GetScriptRunning;
+            client.OnSetScriptRunning -= SetScriptRunning;
+        }
+
+        public virtual void UnSubscribeToClientParcelEvents(IClientAPI client)
+        {
+            client.OnParcelReturnObjectsRequest -= LandChannel.ReturnObjectsInParcel;
+            client.OnParcelSetOtherCleanTime -= LandChannel.SetParcelOtherCleanTime;
+            client.OnParcelBuy -= ProcessParcelBuy;
+        }
+
+        public virtual void UnSubscribeToClientGridEvents(IClientAPI client)
+        {
+            //client.OnNameFromUUIDRequest -= HandleUUIDNameRequest;
+            client.OnMoneyTransferRequest -= ProcessMoneyTransferRequest;
+        }
+
+        public virtual void UnSubscribeToClientNetworkEvents(IClientAPI client)
+        {
+            client.OnNetworkStatsUpdate -= StatsReporter.AddPacketsStats;
+            client.OnViewerEffect -= ProcessViewerEffect;
+        }
+
+        /// <summary>
+        /// Teleport an avatar to their home region
+        /// </summary>
+        /// <param name="agentId">The avatar's Unique ID</param>
+        /// <param name="client">The IClientAPI for the client</param>
+        public virtual bool TeleportClientHome(UUID agentId, IClientAPI client)
+        {
+            if (EntityTransferModule != null)
+            {
+                return EntityTransferModule.TeleportHome(agentId, client);
+            }
+            else
+            {
+                m_log.DebugFormat("[SCENE]: Unable to teleport user home: no AgentTransferModule is active");
+                client.SendTeleportFailed("Unable to perform teleports on this simulator.");
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Duplicates object specified by localID. This is the event handler for IClientAPI.
+        /// </summary>
+        /// <param name="originalPrim">ID of object to duplicate</param>
+        /// <param name="offset"></param>
+        /// <param name="flags"></param>
+        /// <param name="AgentID">Agent doing the duplication</param>
+        /// <param name="GroupID">Group of new object</param>
+        public void DuplicateObject(uint originalPrim, Vector3 offset, uint flags, UUID AgentID, UUID GroupID)
+        {
+            SceneObjectGroup copy = SceneGraph.DuplicateObject(originalPrim, offset, flags, AgentID, GroupID, Quaternion.Identity);
+            if (copy != null)
+                EventManager.TriggerObjectAddedToScene(copy);
+        }
+
+        /// <summary>
+        /// Duplicates object specified by localID at position raycasted against RayTargetObject using 
+        /// RayEnd and RayStart to determine what the angle of the ray is
+        /// </summary>
+        /// <param name="localID">ID of object to duplicate</param>
+        /// <param name="dupeFlags"></param>
+        /// <param name="AgentID">Agent doing the duplication</param>
+        /// <param name="GroupID">Group of new object</param>
+        /// <param name="RayTargetObj">The target of the Ray</param>
+        /// <param name="RayEnd">The ending of the ray (farthest away point)</param>
+        /// <param name="RayStart">The Beginning of the ray (closest point)</param>
+        /// <param name="BypassRaycast">Bool to bypass raycasting</param>
+        /// <param name="RayEndIsIntersection">The End specified is the place to add the object</param>
+        /// <param name="CopyCenters">Position the object at the center of the face that it's colliding with</param>
+        /// <param name="CopyRotates">Rotate the object the same as the localID object</param>
+        public void doObjectDuplicateOnRay(uint localID, uint dupeFlags, UUID AgentID, UUID GroupID,
+                                           UUID RayTargetObj, Vector3 RayEnd, Vector3 RayStart,
+                                           bool BypassRaycast, bool RayEndIsIntersection, bool CopyCenters, bool CopyRotates)
+        {
+            Vector3 pos;
+            const bool frontFacesOnly = true;
+            //m_log.Info("HITTARGET: " + RayTargetObj.ToString() + ", COPYTARGET: " + localID.ToString());
+            SceneObjectPart target = GetSceneObjectPart(localID);
+            SceneObjectPart target2 = GetSceneObjectPart(RayTargetObj);
+
+            if (target != null && target2 != null)
+            {
+                Vector3 direction = Vector3.Normalize(RayEnd - RayStart);
+                Vector3 AXOrigin = RayStart;
+                Vector3 AXdirection = direction;
+
+                pos = target2.AbsolutePosition;
+                //m_log.Info("[OBJECT_REZ]: TargetPos: " + pos.ToString() + ", RayStart: " + RayStart.ToString() + ", RayEnd: " + RayEnd.ToString() + ", Volume: " + Util.GetDistanceTo(RayStart,RayEnd).ToString() + ", mag1: " + Util.GetMagnitude(RayStart).ToString() + ", mag2: " + Util.GetMagnitude(RayEnd).ToString());
+
+                // TODO: Raytrace better here
+
+                //EntityIntersection ei = m_sceneGraph.GetClosestIntersectingPrim(new Ray(AXOrigin, AXdirection));
+                Ray NewRay = new Ray(AXOrigin, AXdirection);
+
+                // Ray Trace against target here
+                EntityIntersection ei = target2.TestIntersectionOBB(NewRay, Quaternion.Identity, frontFacesOnly, CopyCenters);
+
+                // Un-comment out the following line to Get Raytrace results printed to the console.
+                //m_log.Info("[RAYTRACERESULTS]: Hit:" + ei.HitTF.ToString() + " Point: " + ei.ipoint.ToString() + " Normal: " + ei.normal.ToString());
+                float ScaleOffset = 0.5f;
+
+                // If we hit something
+                if (ei.HitTF)
+                {
+                    Vector3 scale = target.Scale;
+                    Vector3 scaleComponent = ei.AAfaceNormal;
+                    if (scaleComponent.X != 0) ScaleOffset = scale.X;
+                    if (scaleComponent.Y != 0) ScaleOffset = scale.Y;
+                    if (scaleComponent.Z != 0) ScaleOffset = scale.Z;
+                    ScaleOffset = Math.Abs(ScaleOffset);
+                    Vector3 intersectionpoint = ei.ipoint;
+                    Vector3 normal = ei.normal;
+                    Vector3 offset = normal * (ScaleOffset / 2f);
+                    pos = intersectionpoint + offset;
+
+                    // stick in offset format from the original prim
+                    pos = pos - target.ParentGroup.AbsolutePosition;
+                    SceneObjectGroup copy;
+                    if (CopyRotates)
+                    {
+                        Quaternion worldRot = target2.GetWorldRotation();
+
+                        // SceneObjectGroup obj = m_sceneGraph.DuplicateObject(localID, pos, target.GetEffectiveObjectFlags(), AgentID, GroupID, worldRot);
+                        copy = m_sceneGraph.DuplicateObject(localID, pos, target.GetEffectiveObjectFlags(), AgentID, GroupID, worldRot);
+                        //obj.Rotation = worldRot;
+                        //obj.UpdateGroupRotationR(worldRot);
+                    }
+                    else
+                    {
+                        copy = m_sceneGraph.DuplicateObject(localID, pos, target.GetEffectiveObjectFlags(), AgentID, GroupID, Quaternion.Identity);
+                    }
+
+                    if (copy != null)
+                        EventManager.TriggerObjectAddedToScene(copy);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Get the avatar appearance for the given client.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="appearance"></param>
+        public void GetAvatarAppearance(IClientAPI client, out AvatarAppearance appearance)
+        {
+            AgentCircuitData aCircuit = m_authenticateHandler.GetAgentCircuitData(client.CircuitCode);
+
+            if (aCircuit == null)
+            {
+                m_log.DebugFormat("[APPEARANCE] Client did not supply a circuit. Non-Linden? Creating default appearance.");
+                appearance = new AvatarAppearance();
+                return;
+            }
+
+            appearance = aCircuit.Appearance;
+            if (appearance == null)
+            {
+                m_log.DebugFormat("[APPEARANCE]: Appearance not found in {0}, returning default", RegionInfo.RegionName);
+                appearance = new AvatarAppearance();
+            }
+        }
+
+        /// <summary>
+        /// Remove the given client from the scene. 
+        /// </summary>
+        /// <remarks>
+        /// Only clientstack code should call this directly.  All other code should call IncomingCloseAgent() instead
+        /// to properly operate the state machine and avoid race conditions with other close requests (such as directly
+        /// from viewers).
+        /// </remarks>
+        /// <param name='agentID'>ID of agent to close</param>
+        /// <param name='closeChildAgents'>
+        /// Close the neighbour child agents associated with this client.
+        /// </param>
+        public void RemoveClient(UUID agentID, bool closeChildAgents)
+        {
+            AgentCircuitData acd = m_authenticateHandler.GetAgentCircuitData(agentID);
+
+            // Shouldn't be necessary since RemoveClient() is currently only called by IClientAPI.Close() which 
+            // in turn is only called by Scene.IncomingCloseAgent() which checks whether the presence exists or not
+            // However, will keep for now just in case.
+            if (acd == null)
+            {
+                m_log.ErrorFormat(
+                    "[SCENE]: No agent circuit found for {0} in {1}, aborting Scene.RemoveClient", agentID, Name);
+
+                return;
+            }
+
+            // TODO: Can we now remove this lock?
+            lock (acd)
+            {
+                bool isChildAgent = false;
+
+                ScenePresence avatar = GetScenePresence(agentID);
+
+                // Shouldn't be necessary since RemoveClient() is currently only called by IClientAPI.Close() which 
+                // in turn is only called by Scene.IncomingCloseAgent() which checks whether the presence exists or not
+                // However, will keep for now just in case.
+                if (avatar == null)
+                {
+                    m_log.ErrorFormat(
+                        "[SCENE]: Called RemoveClient() with agent ID {0} but no such presence is in the scene.", agentID);
+                    m_authenticateHandler.RemoveCircuit(agentID);
+
+                    return;
+                }
+
+                try
+                {
+                    isChildAgent = avatar.IsChildAgent;
+
+                    m_log.DebugFormat(
+                        "[SCENE]: Removing {0} agent {1} {2} from {3}",
+                        isChildAgent ? "child" : "root", avatar.Name, agentID, Name);
+
+                    // Don't do this to root agents, it's not nice for the viewer
+                    if (closeChildAgents && isChildAgent)
+                    {
+                        // Tell a single agent to disconnect from the region.
+                        // Let's do this via UDP
+                        avatar.ControllingClient.SendShutdownConnectionNotice();
+                    }
+
+                    // Only applies to root agents.
+                    if (avatar.ParentID != 0)
+                    {
+                        avatar.StandUp();
+                    }
+
+                    m_sceneGraph.removeUserCount(!isChildAgent);
+
+                    // TODO: We shouldn't use closeChildAgents here - it's being used by the NPC module to stop
+                    // unnecessary operations.  This should go away once NPCs have no accompanying IClientAPI
+                    if (closeChildAgents && CapsModule != null)
+                        CapsModule.RemoveCaps(agentID);
+
+                    if (closeChildAgents && !isChildAgent)
+                    {
+                        List<ulong> regions = avatar.KnownRegionHandles;
+                        regions.Remove(RegionInfo.RegionHandle);
+
+                        // This ends up being done asynchronously so that a logout isn't held up where there are many present but unresponsive neighbours.
+                        m_sceneGridService.SendCloseChildAgentConnections(agentID, acd.SessionID.ToString(), regions);
+                    }
+
+                    m_eventManager.TriggerClientClosed(agentID, this);
+                    m_eventManager.TriggerOnRemovePresence(agentID);
+
+                    if (!isChildAgent)
+                    {
+                        if (AttachmentsModule != null)
+                        {
+                            AttachmentsModule.DeRezAttachments(avatar);
+                        }
+
+                        ForEachClient(
+                            delegate(IClientAPI client)
+                            {
+                                //We can safely ignore null reference exceptions.  It means the avatar is dead and cleaned up anyway
+                                try { client.SendKillObject(new List<uint> { avatar.LocalId }); }
+                                catch (NullReferenceException) { }
+                            });
+                    }
+
+                    // It's possible for child agents to have transactions if changes are being made cross-border.
+                    if (AgentTransactionsModule != null)
+                        AgentTransactionsModule.RemoveAgentAssetTransactions(agentID);
+                }
+                catch (Exception e)
+                {
+                    m_log.Error(
+                        string.Format("[SCENE]: Exception removing {0} from {1}.  Cleaning up.  Exception ", avatar.Name, Name), e);
+                }
+                finally
+                {
+                    try
+                    {
+                        // Always clean these structures up so that any failure above doesn't cause them to remain in the
+                        // scene with possibly bad effects (e.g. continually timing out on unacked packets and triggering
+                        // the same cleanup exception continually.
+                        m_authenticateHandler.RemoveCircuit(agentID);
+                        m_sceneGraph.RemoveScenePresence(agentID);
+                        m_clientManager.Remove(agentID);
+
+                        avatar.Close();
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.Error(
+                            string.Format("[SCENE]: Exception in final clean up of {0} in {1}.  Exception ", avatar.Name, Name), e);
+                    }
+                }
+            }
+
+            //m_log.InfoFormat("[SCENE] Memory pre  GC {0}", System.GC.GetTotalMemory(false));
+            //m_log.InfoFormat("[SCENE] Memory post GC {0}", System.GC.GetTotalMemory(true));
+        }
+
+        /// <summary>
+        /// Removes region from an avatar's known region list.  This coincides with child agents.  For each child agent, there will be a known region entry.
+        /// 
+        /// </summary>
+        /// <param name="avatarID"></param>
+        /// <param name="regionslst"></param>
+        public void HandleRemoveKnownRegionsFromAvatar(UUID avatarID, List<ulong> regionslst)
+        {
+            ScenePresence av = GetScenePresence(avatarID);
+            if (av != null)
+            {
+                lock (av)
+                {
+                    for (int i = 0; i < regionslst.Count; i++)
+                    {
+                        av.RemoveNeighbourRegion(regionslst[i]);
+                    }
+                }
+            }
+        }
+
+        #endregion
+
+        #region Entities
+
+        public void SendKillObject(List<uint> localIDs)
+        {
+            List<uint> deleteIDs = new List<uint>();
+
+            foreach (uint localID in localIDs)
+            {
+                SceneObjectPart part = GetSceneObjectPart(localID);
+                if (part != null) // It is a prim
+                {
+                    if (part.ParentGroup != null && !part.ParentGroup.IsDeleted) // Valid
+                    {
+                        if (part.ParentGroup.RootPart != part) // Child part
+                            continue;
+                    }
+                }
+                deleteIDs.Add(localID);
+            }
+
+            ForEachClient(c => c.SendKillObject(deleteIDs));
+        }
+
+        #endregion
+
+        #region RegionComms
+
+        /// <summary>
+        /// Do the work necessary to initiate a new user connection for a particular scene.
+        /// </summary>
+        /// <param name="agent">CircuitData of the agent who is connecting</param>
+        /// <param name="teleportFlags"></param>
+        /// <param name="source">Source region (may be null)</param>
+        /// <param name="reason">Outputs the reason for the false response on this string</param>
+        /// <returns>True if the region accepts this agent.  False if it does not.  False will 
+        /// also return a reason.</returns>
+        public bool NewUserConnection(AgentCircuitData agent, uint teleportFlags, GridRegion source, out string reason)
+        {
+            return NewUserConnection(agent, teleportFlags, source, out reason, true);
+        }
+
+        /// <summary>
+        /// Do the work necessary to initiate a new user connection for a particular scene.
+        /// </summary>
+        /// <remarks>
+        /// The return bool should allow for connections to be refused, but as not all calling paths
+        /// take proper notice of it yet, we still allowed banned users in.
+        ///
+        /// At the moment this method consists of setting up the caps infrastructure
+        /// The return bool should allow for connections to be refused, but as not all calling paths
+        /// take proper notice of it let, we allowed banned users in still.
+        ///
+        /// This method is called by the login service (in the case of login) or another simulator (in the case of region
+        /// cross or teleport) to initiate the connection.  It is not triggered by the viewer itself - the connection
+        /// is activated later when the viewer sends the initial UseCircuitCodePacket UDP packet (in the case of
+        /// the LLUDP stack).
+        /// </remarks>
+        /// <param name="acd">CircuitData of the agent who is connecting</param>
+        /// <param name="source">Source region (may be null)</param>
+        /// <param name="reason">Outputs the reason for the false response on this string</param>
+        /// <param name="requirePresenceLookup">True for normal presence. False for NPC
+        /// or other applications where a full grid/Hypergrid presence may not be required.</param>
+        /// <returns>True if the region accepts this agent.  False if it does not.  False will 
+        /// also return a reason.</returns>
+        public bool NewUserConnection(AgentCircuitData acd, uint teleportFlags, GridRegion source, out string reason, bool requirePresenceLookup)
+        {
+            bool vialogin = ((teleportFlags & (uint)TPFlags.ViaLogin) != 0 ||
+                (teleportFlags & (uint)TPFlags.ViaHGLogin) != 0);
+            bool viahome = ((teleportFlags & (uint)TPFlags.ViaHome) != 0);
+            bool godlike = ((teleportFlags & (uint)TPFlags.Godlike) != 0);
+
+            reason = String.Empty;
+
+            //Teleport flags:
+            //
+            // TeleportFlags.ViaGodlikeLure - Border Crossing
+            // TeleportFlags.ViaLogin - Login
+            // TeleportFlags.TeleportFlags.ViaLure - Teleport request sent by another user
+            // TeleportFlags.ViaLandmark | TeleportFlags.ViaLocation | TeleportFlags.ViaLandmark | TeleportFlags.Default - Regular Teleport
+
+            // Don't disable this log message - it's too helpful
+            string curViewer = Util.GetViewerName(acd);
+            m_log.DebugFormat(
+                "[SCENE]: Region {0} told of incoming {1} agent {2} {3} {4} (circuit code {5}, IP {6}, viewer {7}, teleportflags ({8}), position {9}. {10}",
+                RegionInfo.RegionName,
+                (acd.child ? "child" : "root"),
+                acd.firstname,
+                acd.lastname,
+                acd.AgentID,
+                acd.circuitcode,
+                acd.IPAddress,
+                curViewer,
+                ((TPFlags)teleportFlags).ToString(),
+                acd.startpos,
+                (source == null) ? "" : string.Format("From region {0} ({1}){2}", source.RegionName, source.RegionID, (source.RawServerURI == null) ? "" : " @ " + source.ServerURI)
+            );
+
+            if (!LoginsEnabled)
+            {
+                reason = "Logins Disabled";
+                return false;
+            }
+
+            //Check if the viewer is banned or in the viewer access list
+            //We check if the substring is listed for higher flexebility
+            bool ViewerDenied = true;
+
+            //Check if the specific viewer is listed in the allowed viewer list
+            if (m_AllowedViewers.Count > 0)
+            {
+                foreach (string viewer in m_AllowedViewers)
+                {
+                    if (viewer == curViewer.Substring(0, Math.Min(viewer.Length, curViewer.Length)).Trim().ToLower())
+                    {
+                        ViewerDenied = false;
+                        break;
+                    }
+                }
+            }
+            else
+            {
+                ViewerDenied = false;
+            }
+
+            //Check if the viewer is in the banned list
+            if (m_BannedViewers.Count > 0)
+            {
+                foreach (string viewer in m_BannedViewers)
+                {
+                    if (viewer == curViewer.Substring(0, Math.Min(viewer.Length, curViewer.Length)).Trim().ToLower())
+                    {
+                        ViewerDenied = true;
+                        break;
+                    }
+                }
+            }
+
+            if (ViewerDenied)
+            {
+                m_log.DebugFormat(
+                    "[SCENE]: Access denied for {0} {1} using {2}",
+                    acd.firstname, acd.lastname, curViewer);
+                reason = "Access denied, your viewer is banned by the region owner";
+                return false;
+            }
+
+            ILandObject land;
+            ScenePresence sp;
+
+            lock (m_removeClientLock)
+            {
+                sp = GetScenePresence(acd.AgentID);
+
+                // We need to ensure that we are not already removing the scene presence before we ask it not to be 
+                // closed.
+                if (sp != null && sp.IsChildAgent
+                    && (sp.LifecycleState == ScenePresenceState.Running
+                        || sp.LifecycleState == ScenePresenceState.PreRemove))
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Reusing existing child scene presence for {0}, state {1} in {2}",
+                        sp.Name, sp.LifecycleState, Name);
+
+                    // In the case where, for example, an A B C D region layout, an avatar may
+                    // teleport from A -> D, but then -> C before A has asked B to close its old child agent.  When C
+                    // renews the lease on the child agent at B, we must make sure that the close from A does not succeed.
+                    //
+                    // XXX: In the end, this should not be necessary if child agents are closed without delay on 
+                    // teleport, since realistically, the close request should always be processed before any other
+                    // region tried to re-establish a child agent.  This is much simpler since the logic below is 
+                    // vulnerable to an issue when a viewer quits a region without sending a proper logout but then
+                    // re-establishes the connection on a relogin.  This could wrongly set the DoNotCloseAfterTeleport
+                    // flag when no teleport had taken place (and hence no close was going to come).
+//                    if (!acd.ChildrenCapSeeds.ContainsKey(RegionInfo.RegionHandle))
+//                    {
+//                        m_log.DebugFormat(
+//                            "[SCENE]: Setting DoNotCloseAfterTeleport for child scene presence {0} in {1} because source will attempt close.", 
+//                            sp.Name, Name);
+//
+//                        sp.DoNotCloseAfterTeleport = true;
+//                    }
+//                    else if (EntityTransferModule.IsInTransit(sp.UUID))
+
+                    sp.LifecycleState = ScenePresenceState.Running;
+
+                    if (EntityTransferModule.IsInTransit(sp.UUID))
+                    {
+                        sp.DoNotCloseAfterTeleport = true;
+
+                        m_log.DebugFormat(
+                            "[SCENE]: Set DoNotCloseAfterTeleport for child scene presence {0} in {1} because this region will attempt end-of-teleport close from a previous close.", 
+                            sp.Name, Name);
+                    }
+                }
+            }
+
+            // Need to poll here in case we are currently deleting an sp.  Letting threads run over each other will
+            // allow unpredictable things to happen.
+            if (sp != null)
+            {
+                const int polls = 10;
+                const int pollInterval = 1000;
+                int pollsLeft = polls;
+
+                while (sp.LifecycleState == ScenePresenceState.Removing && pollsLeft-- > 0)
+                    Thread.Sleep(pollInterval);
+
+                if (sp.LifecycleState == ScenePresenceState.Removing)
+                {
+                    m_log.WarnFormat(
+                        "[SCENE]: Agent {0} in {1} was still being removed after {2}s.  Aborting NewUserConnection.", 
+                        sp.Name, Name, polls * pollInterval / 1000);
+
+                    return false;
+                }
+                else if (polls != pollsLeft)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: NewUserConnection for agent {0} in {1} had to wait {2}s for in-progress removal to complete on an old presence.",
+                        sp.Name, Name, polls * pollInterval / 1000);
+                }
+            }
+
+            // TODO: can we remove this lock?
+            lock (acd)
+            {
+                if (sp != null && !sp.IsChildAgent)
+                {
+                    // We have a root agent. Is it in transit?
+                    if (!EntityTransferModule.IsInTransit(sp.UUID))
+                    {
+                        // We have a zombie from a crashed session. 
+                        // Or the same user is trying to be root twice here, won't work.
+                        // Kill it.
+                        m_log.WarnFormat(
+                            "[SCENE]: Existing root scene presence detected for {0} {1} in {2} when connecting.  Removing existing presence.",
+                            sp.Name, sp.UUID, RegionInfo.RegionName);
+
+                        if (sp.ControllingClient != null)
+                            CloseAgent(sp.UUID, true);
+
+                        sp = null;
+                    }
+                    //else
+                    //    m_log.WarnFormat("[SCENE]: Existing root scene presence for {0} {1} in {2}, but agent is in trasit", sp.Name, sp.UUID, RegionInfo.RegionName);
+                }
+
+                // Optimistic: add or update the circuit data with the new agent circuit data and teleport flags.
+                // We need the circuit data here for some of the subsequent checks. (groups, for example)
+                // If the checks fail, we remove the circuit.
+                acd.teleportFlags = teleportFlags;
+                m_authenticateHandler.AddNewCircuit(acd.circuitcode, acd);
+
+                land = LandChannel.GetLandObject(acd.startpos.X, acd.startpos.Y);
+
+                // On login test land permisions
+                if (vialogin)
+                {
+                    if (land != null && !TestLandRestrictions(acd.AgentID, out reason, ref acd.startpos.X, ref acd.startpos.Y))
+                    {
+                        m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                        return false;
+                    }
+                }
+
+                if (sp == null) // We don't have an [child] agent here already
+                {
+                    if (requirePresenceLookup)
+                    {
+                        try
+                        {
+                            if (!VerifyUserPresence(acd, out reason))
+                            {
+                                m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                                return false;
+                            }
+                        }
+                        catch (Exception e)
+                        {
+                            m_log.ErrorFormat(
+                                "[SCENE]: Exception verifying presence {0}{1}", e.Message, e.StackTrace);
+
+                            m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                            return false;
+                        }
+                    }
+
+                    try
+                    {
+                        if (!AuthorizeUser(acd, (vialogin ? false : SeeIntoRegion), out reason))
+                        {
+                            m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                            return false;
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat(
+                            "[SCENE]: Exception authorizing user {0}{1}", e.Message, e.StackTrace);
+
+                        m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                        return false;
+                    }
+
+                    m_log.InfoFormat(
+                        "[SCENE]: Region {0} authenticated and authorized incoming {1} agent {2} {3} {4} (circuit code {5})",
+                        Name, (acd.child ? "child" : "root"), acd.firstname, acd.lastname,
+                        acd.AgentID, acd.circuitcode);
+
+                    if (CapsModule != null)
+                    {
+                        CapsModule.SetAgentCapsSeeds(acd);
+                        CapsModule.CreateCaps(acd.AgentID);
+                    }
+                }
+                else
+                {
+                    // Let the SP know how we got here. This has a lot of interesting
+                    // uses down the line.
+                    sp.TeleportFlags = (TPFlags)teleportFlags;
+
+                    if (sp.IsChildAgent)
+                    {
+                        m_log.DebugFormat(
+                            "[SCENE]: Adjusting known seeds for existing agent {0} in {1}",
+                            acd.AgentID, RegionInfo.RegionName);
+
+                        sp.AdjustKnownSeeds();
+
+                        if (CapsModule != null)
+                        {
+                            CapsModule.SetAgentCapsSeeds(acd);
+                            CapsModule.CreateCaps(acd.AgentID);
+                        }
+                    }
+                }
+
+                // Try caching an incoming user name much earlier on to see if this helps with an issue
+                // where HG users are occasionally seen by others as "Unknown User" because their UUIDName
+                // request for the HG avatar appears to trigger before the user name is cached.
+                CacheUserName(null, acd);
+            }
+
+            if (vialogin)
+            {
+//                CleanDroppedAttachments();
+
+                // Make sure avatar position is in the region (why it wouldn't be is a mystery but do sanity checking)
+                if (acd.startpos.X < 0) acd.startpos.X = 1f;
+                if (acd.startpos.X >= RegionInfo.RegionSizeX) acd.startpos.X = RegionInfo.RegionSizeX - 1f;
+                if (acd.startpos.Y < 0) acd.startpos.Y = 1f;
+                if (acd.startpos.Y >= RegionInfo.RegionSizeY) acd.startpos.Y = RegionInfo.RegionSizeY - 1f;
+
+//                m_log.DebugFormat(
+//                    "[SCENE]: Found telehub object {0} for new user connection {1} to {2}", 
+//                    RegionInfo.RegionSettings.TelehubObject, acd.Name, Name);
+
+                // Honor Estate teleport routing via Telehubs excluding ViaHome and GodLike TeleportFlags
+                if (RegionInfo.RegionSettings.TelehubObject != UUID.Zero &&
+                    RegionInfo.EstateSettings.AllowDirectTeleport == false &&
+                    !viahome && !godlike)
+                {
+                    SceneObjectGroup telehub = GetSceneObjectGroup(RegionInfo.RegionSettings.TelehubObject);
+
+                    if (telehub != null)
+                    {
+                        // Can have multiple SpawnPoints
+                        List<SpawnPoint> spawnpoints = RegionInfo.RegionSettings.SpawnPoints();
+                        if (spawnpoints.Count > 1)
+                        {
+                            // We have multiple SpawnPoints, Route the agent to a random or sequential one
+                            if (SpawnPointRouting == "random")
+                                acd.startpos = spawnpoints[Util.RandomClass.Next(spawnpoints.Count) - 1].GetLocation(
+                                    telehub.AbsolutePosition,
+                                    telehub.GroupRotation
+                                );
+                            else
+                                acd.startpos = spawnpoints[SpawnPoint()].GetLocation(
+                                    telehub.AbsolutePosition,
+                                    telehub.GroupRotation
+                                );
+                        }
+                        else if (spawnpoints.Count == 1)
+                        {
+                            // We have a single SpawnPoint and will route the agent to it
+                            acd.startpos = spawnpoints[0].GetLocation(telehub.AbsolutePosition, telehub.GroupRotation);
+                        }
+                        else
+                        {
+                            m_log.DebugFormat(
+                                "[SCENE]: No spawnpoints defined for telehub {0} for {1} in {2}.  Continuing.",
+                                RegionInfo.RegionSettings.TelehubObject, acd.Name, Name);
+                        }
+                    }
+                    else
+                    {
+                        m_log.DebugFormat(
+                            "[SCENE]: No telehub {0} found to direct {1} in {2}.  Continuing.",
+                            RegionInfo.RegionSettings.TelehubObject, acd.Name, Name);
+                    }
+
+                    // Final permissions check; this time we don't allow changing the position
+                    if (!IsPositionAllowed(acd.AgentID, acd.startpos, ref reason))
+                    {
+                        m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                        return false;
+                    }
+
+                    return true;
+                }
+
+                // Honor parcel landing type and position.
+                if (land != null)
+                {
+                    if (land.LandData.LandingType == (byte)1 && land.LandData.UserLocation != Vector3.Zero)
+                    {
+                        acd.startpos = land.LandData.UserLocation;
+
+                        // Final permissions check; this time we don't allow changing the position
+                        if (!IsPositionAllowed(acd.AgentID, acd.startpos, ref reason))
+                        {
+                            m_authenticateHandler.RemoveCircuit(acd.circuitcode);
+                            return false;
+                        }
+                    }
+                }
+            }
+
+            return true;
+        }
+
+        private bool IsPositionAllowed(UUID agentID, Vector3 pos, ref string reason)
+        {
+            ILandObject land = LandChannel.GetLandObject(pos);
+            if (land == null)
+                return true;
+
+            if (land.IsBannedFromLand(agentID) || land.IsRestrictedFromLand(agentID))
+            {
+                reason = "You are banned from the region.";
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool TestLandRestrictions(UUID agentID, out string reason, ref float posX, ref float posY)
+        {
+            if (posX < 0)
+                posX = 0;
+            else if (posX >= (float)RegionInfo.RegionSizeX)
+                posX = (float)RegionInfo.RegionSizeX - 0.001f;
+            if (posY < 0)
+                posY = 0;
+            else if (posY >= (float)RegionInfo.RegionSizeY)
+                posY = (float)RegionInfo.RegionSizeY - 0.001f;
+
+            reason = String.Empty;
+            if (Permissions.IsGod(agentID))
+                return true;
+
+            ILandObject land = LandChannel.GetLandObject(posX, posY);
+            if (land == null)
+                return false;
+
+            bool banned = land.IsBannedFromLand(agentID);
+            bool restricted = land.IsRestrictedFromLand(agentID);
+
+            if (banned || restricted)
+            {
+                ILandObject nearestParcel = GetNearestAllowedParcel(agentID, posX, posY);
+                if (nearestParcel != null)
+                {
+                    //Move agent to nearest allowed
+                    Vector3 newPosition = GetParcelCenterAtGround(nearestParcel);
+                    posX = newPosition.X;
+                    posY = newPosition.Y;
+                }
+                else
+                {
+                    if (banned)
+                    {
+                        reason = "Cannot regioncross into banned parcel.";
+                    }
+                    else
+                    {
+                        reason = String.Format("Denied access to private region {0}: You are not on the access list for that region.",
+                            RegionInfo.RegionName);
+                    }
+                    return false;
+                }
+            }
+            reason = "";
+            return true;
+        }
+
+        /// <summary>
+        /// Verifies that the user has a presence on the Grid
+        /// </summary>
+        /// <param name="agent">Circuit Data of the Agent we're verifying</param>
+        /// <param name="reason">Outputs the reason for the false response on this string</param>
+        /// <returns>True if the user has a session on the grid.  False if it does not.  False will 
+        /// also return a reason.</returns>
+        public virtual bool VerifyUserPresence(AgentCircuitData agent, out string reason)
+        {
+            reason = String.Empty;
+
+            IPresenceService presence = RequestModuleInterface<IPresenceService>();
+            if (presence == null)
+            {
+                reason = String.Format("Failed to verify user presence in the grid for {0} {1} in region {2}. Presence service does not exist.", agent.firstname, agent.lastname, RegionInfo.RegionName);
+                return false;
+            }
+
+            OpenSim.Services.Interfaces.PresenceInfo pinfo = presence.GetAgent(agent.SessionID);
+
+            if (pinfo == null)
+            {
+                reason = String.Format("Failed to verify user presence in the grid for {0} {1}, access denied to region {2}.", agent.firstname, agent.lastname, RegionInfo.RegionName);
+                return false;
+            }
+
+            return true;
+        }
+
+        /// <summary>
+        /// Verify if the user can connect to this region.  Checks the banlist and ensures that the region is set for public access
+        /// </summary>
+        /// <param name="agent">The circuit data for the agent</param>
+        /// <param name="reason">outputs the reason to this string</param>
+        /// <returns>True if the region accepts this agent.  False if it does not.  False will 
+        /// also return a reason.</returns>
+        protected virtual bool AuthorizeUser(AgentCircuitData agent, bool bypassAccessControl, out string reason)
+        {
+            reason = String.Empty;
+
+            if (!m_strictAccessControl) return true;
+            if (Permissions.IsGod(agent.AgentID)) return true;
+
+            if (AuthorizationService != null)
+            {
+                if (!AuthorizationService.IsAuthorizedForRegion(
+                    agent.AgentID.ToString(), agent.firstname, agent.lastname, RegionInfo.RegionID.ToString(), out reason))
+                {
+                    m_log.WarnFormat("[CONNECTION BEGIN]: Denied access to: {0} ({1} {2}) at {3} because: {4}",
+                                     agent.AgentID, agent.firstname, agent.lastname, RegionInfo.RegionName, reason);
+
+                    return false;
+                }
+            }
+
+            // We only test the things below when we want to cut off
+            // child agents from being present in the scene for which their root
+            // agent isn't allowed. Otherwise, we allow child agents. The test for
+            // the root is done elsewhere (QueryAccess)
+            if (!bypassAccessControl)
+            {
+                if (RegionInfo.EstateSettings != null)
+                {
+                    if (RegionInfo.EstateSettings.IsBanned(agent.AgentID))
+                    {
+                        m_log.WarnFormat("[CONNECTION BEGIN]: Denied access to: {0} ({1} {2}) at {3} because the user is on the banlist",
+                                         agent.AgentID, agent.firstname, agent.lastname, RegionInfo.RegionName);
+                        reason = String.Format("Denied access to region {0}: You have been banned from that region.",
+                                               RegionInfo.RegionName);
+                        return false;
+                    }
+                }
+                else
+                {
+                    m_log.ErrorFormat("[CONNECTION BEGIN]: Estate Settings is null!");
+                }
+
+                List<UUID> agentGroups = new List<UUID>();
+
+                if (m_groupsModule != null)
+                {
+                    GroupMembershipData[] GroupMembership = m_groupsModule.GetMembershipData(agent.AgentID);
+
+                    if (GroupMembership != null)
+                    {
+                        for (int i = 0; i < GroupMembership.Length; i++)
+                            agentGroups.Add(GroupMembership[i].GroupID);
+                    }
+                    else
+                    {
+                        m_log.ErrorFormat("[CONNECTION BEGIN]: GroupMembership is null!");
+                    }
+                }
+
+                bool groupAccess = false;
+                UUID[] estateGroups = RegionInfo.EstateSettings.EstateGroups;
+
+                if (estateGroups != null)
+                {
+                    foreach (UUID group in estateGroups)
+                    {
+                        if (agentGroups.Contains(group))
+                        {
+                            groupAccess = true;
+                            break;
+                        }
+                    }
+                }
+                else
+                {
+                    m_log.ErrorFormat("[CONNECTION BEGIN]: EstateGroups is null!");
+                }
+
+                if (!RegionInfo.EstateSettings.PublicAccess &&
+                    !RegionInfo.EstateSettings.HasAccess(agent.AgentID) &&
+                    !groupAccess)
+                {
+                    m_log.WarnFormat("[CONNECTION BEGIN]: Denied access to: {0} ({1} {2}) at {3} because the user does not have access to the estate",
+                                     agent.AgentID, agent.firstname, agent.lastname, RegionInfo.RegionName);
+                    reason = String.Format("Denied access to private region {0}: You are not on the access list for that region.",
+                                           RegionInfo.RegionName);
+                    return false;
+                }
+            }
+
+            // TODO: estate/region settings are not properly hooked up
+            // to ILandObject.isRestrictedFromLand()
+            // if (null != LandChannel)
+            // {
+            //     // region seems to have local Id of 1
+            //     ILandObject land = LandChannel.GetLandObject(1);
+            //     if (null != land)
+            //     {
+            //         if (land.isBannedFromLand(agent.AgentID))
+            //         {
+            //             m_log.WarnFormat("[CONNECTION BEGIN]: Denied access to: {0} ({1} {2}) at {3} because the user has been banned from land",
+            //                              agent.AgentID, agent.firstname, agent.lastname, RegionInfo.RegionName);
+            //             reason = String.Format("Denied access to private region {0}: You are banned from that region.",
+            //                                    RegionInfo.RegionName);
+            //             return false;
+            //         }
+
+            //         if (land.isRestrictedFromLand(agent.AgentID))
+            //         {
+            //             m_log.WarnFormat("[CONNECTION BEGIN]: Denied access to: {0} ({1} {2}) at {3} because the user does not have access to the region",
+            //                              agent.AgentID, agent.firstname, agent.lastname, RegionInfo.RegionName);
+            //             reason = String.Format("Denied access to private region {0}: You are not on the access list for that region.",
+            //                                    RegionInfo.RegionName);
+            //             return false;
+            //         }
+            //     }
+            // }
+
+            return true;
+        }
+
+        /// <summary>
+        /// Update an AgentCircuitData object with new information
+        /// </summary>
+        /// <param name="data">Information to update the AgentCircuitData with</param>
+        public void UpdateCircuitData(AgentCircuitData data)
+        {
+            m_authenticateHandler.UpdateAgentData(data);
+        }
+
+        /// <summary>
+        /// Change the Circuit Code for the user's Circuit Data
+        /// </summary>
+        /// <param name="oldcc">The old Circuit Code.  Must match a previous circuit code</param>
+        /// <param name="newcc">The new Circuit Code.  Must not be an already existing circuit code</param>
+        /// <returns>True if we successfully changed it.  False if we did not</returns>
+        public bool ChangeCircuitCode(uint oldcc, uint newcc)
+        {
+            return m_authenticateHandler.TryChangeCiruitCode(oldcc, newcc);
+        }
+
+//        /// <summary>
+//        /// The Grid has requested that we log-off a user.  Log them off.
+//        /// </summary>
+//        /// <param name="AvatarID">Unique ID of the avatar to log-off</param>
+//        /// <param name="RegionSecret">SecureSessionID of the user, or the RegionSecret text when logging on to the grid</param>
+//        /// <param name="message">message to display to the user.  Reason for being logged off</param>
+//        public void HandleLogOffUserFromGrid(UUID AvatarID, UUID RegionSecret, string message)
+//        {
+//            ScenePresence loggingOffUser = GetScenePresence(AvatarID);
+//            if (loggingOffUser != null)
+//            {
+//                UUID localRegionSecret = UUID.Zero;
+//                bool parsedsecret = UUID.TryParse(RegionInfo.regionSecret, out localRegionSecret);
+//
+//                // Region Secret is used here in case a new sessionid overwrites an old one on the user server.
+//                // Will update the user server in a few revisions to use it.
+//
+//                if (RegionSecret == loggingOffUser.ControllingClient.SecureSessionId || (parsedsecret && RegionSecret == localRegionSecret))
+//                {
+//                    m_sceneGridService.SendCloseChildAgentConnections(loggingOffUser.UUID, loggingOffUser.KnownRegionHandles);
+//                    loggingOffUser.ControllingClient.Kick(message);
+//                    // Give them a second to receive the message!
+//                    Thread.Sleep(1000);
+//                    loggingOffUser.ControllingClient.Close();
+//                }
+//                else
+//                {
+//                    m_log.Info("[USERLOGOFF]: System sending the LogOff user message failed to sucessfully authenticate");
+//                }
+//            }
+//            else
+//            {
+//                m_log.InfoFormat("[USERLOGOFF]: Got a logoff request for {0} but the user isn't here.  The user might already have been logged out", AvatarID.ToString());
+//            }
+//        }
+
+//        /// <summary>
+//        /// Triggered when an agent crosses into this sim.  Also happens on initial login.
+//        /// </summary>
+//        /// <param name="agentID"></param>
+//        /// <param name="position"></param>
+//        /// <param name="isFlying"></param>
+//        public virtual void AgentCrossing(UUID agentID, Vector3 position, bool isFlying)
+//        {
+//            ScenePresence presence = GetScenePresence(agentID);
+//            if (presence != null)
+//            {
+//                try
+//                {
+//                    presence.MakeRootAgent(position, isFlying);
+//                }
+//                catch (Exception e)
+//                {
+//                    m_log.ErrorFormat("[SCENE]: Unable to do agent crossing, exception {0}{1}", e.Message, e.StackTrace);
+//                }
+//            }
+//            else
+//            {
+//                m_log.ErrorFormat(
+//                    "[SCENE]: Could not find presence for agent {0} crossing into scene {1}",
+//                    agentID, RegionInfo.RegionName);
+//            }
+//        }
+
+        /// <summary>
+        /// We've got an update about an agent that sees into this region, 
+        /// send it to ScenePresence for processing  It's the full data.
+        /// </summary>
+        /// <param name="cAgentData">Agent that contains all of the relevant things about an agent.
+        /// Appearance, animations, position, etc.</param>
+        /// <returns>true if we handled it.</returns>
+        public virtual bool IncomingUpdateChildAgent(AgentData cAgentData)
+        {
+            m_log.DebugFormat(
+                "[SCENE]: Incoming child agent update for {0} in {1}", cAgentData.AgentID, RegionInfo.RegionName);
+
+            // TODO: This check should probably be in QueryAccess().
+            ILandObject nearestParcel = GetNearestAllowedParcel(cAgentData.AgentID, RegionInfo.RegionSizeX / 2, RegionInfo.RegionSizeY / 2);
+            if (nearestParcel == null)
+            {
+                m_log.InfoFormat(
+                    "[SCENE]: Denying root agent entry to {0} in {1}: no allowed parcel",
+                    cAgentData.AgentID, RegionInfo.RegionName);
+
+                return false;
+            }
+
+            // We have to wait until the viewer contacts this region
+            // after receiving the EnableSimulator HTTP Event Queue message (for the v1 teleport protocol) 
+            // or TeleportFinish (for the v2 teleport protocol).  This triggers the viewer to send
+            // a UseCircuitCode packet which in turn calls AddNewAgent which finally creates the ScenePresence.
+            ScenePresence sp = WaitGetScenePresence(cAgentData.AgentID);
+
+            if (sp != null)
+            {
+                if (cAgentData.SessionID != sp.ControllingClient.SessionId)
+                {
+                    m_log.WarnFormat(
+                        "[SCENE]: Attempt to update agent {0} with invalid session id {1} (possibly from simulator in older version; tell them to update).", 
+                        sp.UUID, cAgentData.SessionID);
+
+                    Console.WriteLine(String.Format("[SCENE]: Attempt to update agent {0} ({1}) with invalid session id {2}", 
+                        sp.UUID, sp.ControllingClient.SessionId, cAgentData.SessionID));
+                }
+
+                sp.UpdateChildAgent(cAgentData);
+
+                int ntimes = 20;
+                if (cAgentData.SenderWantsToWaitForRoot)
+                {
+                    while (sp.IsChildAgent && ntimes-- > 0)
+                        Thread.Sleep(1000);
+
+                    if (sp.IsChildAgent)
+                        m_log.WarnFormat(
+                            "[SCENE]: Found presence {0} {1} unexpectedly still child in {2}",
+                            sp.Name, sp.UUID, Name);
+                    else
+                        m_log.InfoFormat(
+                            "[SCENE]: Found presence {0} {1} as root in {2} after {3} waits",
+                                sp.Name, sp.UUID, Name, 20 - ntimes);
+
+                    if (sp.IsChildAgent)
+                        return false;
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// We've got an update about an agent that sees into this region, 
+        /// send it to ScenePresence for processing  It's only positional data
+        /// </summary>
+        /// <param name="cAgentData">AgentPosition that contains agent positional data so we can know what to send</param>
+        /// <returns>true if we handled it.</returns>
+        public virtual bool IncomingUpdateChildAgent(AgentPosition cAgentData)
+        {
+//            m_log.DebugFormat(
+//                "[SCENE PRESENCE]: IncomingChildAgentDataUpdate POSITION for {0} in {1}, position {2}", 
+//                cAgentData.AgentID, Name, cAgentData.Position);
+
+            ScenePresence childAgentUpdate = GetScenePresence(cAgentData.AgentID);
+            if (childAgentUpdate != null)
+            {
+//                if (childAgentUpdate.ControllingClient.SessionId != cAgentData.SessionID)
+//                    // Only warn for now
+//                    m_log.WarnFormat("[SCENE]: Attempt at updating position of agent {0} with invalid session id {1}. Neighbor running older version?", 
+//                        childAgentUpdate.UUID, cAgentData.SessionID);
+
+                // I can't imagine *yet* why we would get an update if the agent is a root agent..
+                // however to avoid a race condition crossing borders..
+                if (childAgentUpdate.IsChildAgent)
+                {
+                    uint rRegionX = (uint)(cAgentData.RegionHandle >> 40);
+                    uint rRegionY = (((uint)(cAgentData.RegionHandle)) >> 8);
+                    uint tRegionX = RegionInfo.RegionLocX;
+                    uint tRegionY = RegionInfo.RegionLocY;
+                    //Send Data to ScenePresence
+                    childAgentUpdate.UpdateChildAgent(cAgentData, tRegionX, tRegionY, rRegionX, rRegionY);
+                    // Not Implemented:
+                    //TODO: Do we need to pass the message on to one of our neighbors?
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Poll until the requested ScenePresence appears or we timeout.
+        /// </summary>
+        /// <returns>The scene presence is found, else null.</returns>
+        /// <param name='agentID'></param>
+        protected virtual ScenePresence WaitGetScenePresence(UUID agentID)
+        {
+            int ntimes = 20;
+            ScenePresence sp = null;
+            while ((sp = GetScenePresence(agentID)) == null && (ntimes-- > 0))
+                Thread.Sleep(1000);
+
+            if (sp == null)
+                m_log.WarnFormat(
+                    "[SCENE PRESENCE]: Did not find presence with id {0} in {1} before timeout",
+                    agentID, RegionInfo.RegionName);
+
+            return sp;
+        }
+
+        /// <summary>
+        /// Authenticated close (via network)
+        /// </summary>
+        /// <param name="agentID"></param>
+        /// <param name="force"></param>
+        /// <param name="auth_token"></param>
+        /// <returns></returns>
+        public bool CloseAgent(UUID agentID, bool force, string auth_token)
+        {
+            //m_log.DebugFormat("[SCENE]: Processing incoming close agent {0} in region {1} with auth_token {2}", agentID, RegionInfo.RegionName, auth_token);
+
+            // Check that the auth_token is valid
+            AgentCircuitData acd = AuthenticateHandler.GetAgentCircuitData(agentID);
+
+            if (acd == null)
+            {
+                m_log.DebugFormat(
+                    "[SCENE]: Request to close agent {0} but no such agent in scene {1}.  May have been closed previously.", 
+                    agentID, Name);
+
+                return false;
+            }
+
+            if (acd.SessionID.ToString() == auth_token)
+            {
+                return CloseAgent(agentID, force);
+            }
+            else
+            {
+                m_log.WarnFormat(
+                    "[SCENE]: Request to close agent {0} with invalid authorization token {1} in {2}", 
+                    agentID, auth_token, Name);
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Tell a single client to prepare to close.
+        /// </summary>
+        /// <remarks>
+        /// This should only be called if we may close the client but there will be some delay in so doing.  Meant for
+        /// internal use - other callers should almost certainly called CloseClient().
+        /// </remarks>
+        /// <param name="sp"></param>
+        /// <returns>true if pre-close state notification was successful.  false if the agent
+        /// was not in a state where it could transition to pre-close.</returns>
+        public bool IncomingPreCloseClient(ScenePresence sp)
+        {
+            lock (m_removeClientLock)
+            {
+                // We need to avoid a race condition where in, for example, an A B C D region layout, an avatar may
+                // teleport from A -> D, but then -> C before A has asked B to close its old child agent.  We do not
+                // want to obey this close since C may have renewed the child agent lease on B.
+                if (sp.DoNotCloseAfterTeleport)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Not pre-closing {0} agent {1} in {2} since another simulator has re-established the child connection",
+                        sp.IsChildAgent ? "child" : "root", sp.Name, Name);
+
+                    // Need to reset the flag so that a subsequent close after another teleport can succeed.
+                    sp.DoNotCloseAfterTeleport = false;
+
+                    return false;
+                }
+
+                if (sp.LifecycleState != ScenePresenceState.Running)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Called IncomingPreCloseAgent() for {0} in {1} but presence is already in state {2}",
+                        sp.Name, Name, sp.LifecycleState);
+
+                    return false;
+                }
+
+                sp.LifecycleState = ScenePresenceState.PreRemove;
+
+                return true;
+            }
+        }
+
+        /// <summary>
+        /// Tell a single agent to disconnect from the region.
+        /// </summary>
+        /// <param name="agentID"></param>
+        /// <param name="force">
+        /// Force the agent to close even if it might be in the middle of some other operation.  You do not want to
+        /// force unless you are absolutely sure that the agent is dead and a normal close is not working.
+        /// </param>
+        public override bool CloseAgent(UUID agentID, bool force)
+        {
+            ScenePresence sp;
+
+            lock (m_removeClientLock)
+            {
+                sp = GetScenePresence(agentID);
+
+                if (sp == null)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Called CloseClient() with agent ID {0} but no such presence is in {1}", 
+                        agentID, Name);
+
+                    return false;
+                }
+
+                if (sp.LifecycleState != ScenePresenceState.Running && sp.LifecycleState != ScenePresenceState.PreRemove)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Called CloseClient() for {0} in {1} but presence is already in state {2}",
+                        sp.Name, Name, sp.LifecycleState);
+
+                    return false;
+                }
+
+                // We need to avoid a race condition where in, for example, an A B C D region layout, an avatar may
+                // teleport from A -> D, but then -> C before A has asked B to close its old child agent.  We do not
+                // want to obey this close since C may have renewed the child agent lease on B.
+                if (sp.DoNotCloseAfterTeleport)
+                {
+                    m_log.DebugFormat(
+                        "[SCENE]: Not closing {0} agent {1} in {2} since another simulator has re-established the child connection",
+                        sp.IsChildAgent ? "child" : "root", sp.Name, Name);
+
+                    // Need to reset the flag so that a subsequent close after another teleport can succeed.
+                    sp.DoNotCloseAfterTeleport = false;
+
+                    return false;
+                }
+
+                sp.LifecycleState = ScenePresenceState.Removing;
+            }
+
+            sp.ControllingClient.Close(force);
+
+            return true;
+        }
+
+        /// <summary>
+        /// Tries to teleport agent to another region.
+        /// </summary>
+        /// <remarks>
+        /// The region name must exactly match that given.
+        /// </remarks>
+        /// <param name="remoteClient"></param>
+        /// <param name="regionName"></param>
+        /// <param name="position"></param>
+        /// <param name="lookAt"></param>
+        /// <param name="teleportFlags"></param>
+        public void RequestTeleportLocation(IClientAPI remoteClient, string regionName, Vector3 position,
+                                            Vector3 lookat, uint teleportFlags)
+        {
+            GridRegion region = GridService.GetRegionByName(RegionInfo.ScopeID, regionName);
+
+            if (region == null)
+            {
+                // can't find the region: Tell viewer and abort
+                remoteClient.SendTeleportFailed("The region '" + regionName + "' could not be found.");
+                return;
+            }
+
+            RequestTeleportLocation(remoteClient, region.RegionHandle, position, lookat, teleportFlags);
+        }
+
+        /// <summary>
+        /// Tries to teleport agent to other region.
+        /// </summary>
+        /// <param name="remoteClient"></param>
+        /// <param name="regionHandle"></param>
+        /// <param name="position"></param>
+        /// <param name="lookAt"></param>
+        /// <param name="teleportFlags"></param>
+        public void RequestTeleportLocation(IClientAPI remoteClient, ulong regionHandle, Vector3 position,
+                                            Vector3 lookAt, uint teleportFlags)
+        {
+            ScenePresence sp = GetScenePresence(remoteClient.AgentId);
+            if (sp != null)
+            {
+                if (EntityTransferModule != null)
+                {
+                    EntityTransferModule.Teleport(sp, regionHandle, position, lookAt, teleportFlags);
+                }
+                else
+                {
+                    m_log.DebugFormat("[SCENE]: Unable to perform teleports: no AgentTransferModule is active");
+                    sp.ControllingClient.SendTeleportFailed("Unable to perform teleports on this simulator.");
+                }
+            }
+        }
+
+        public bool CrossAgentToNewRegion(ScenePresence agent, bool isFlying)
+        {
+            if (EntityTransferModule != null)
+            {
+                return EntityTransferModule.Cross(agent, isFlying);
+            }
+            else
+            {
+                m_log.DebugFormat("[SCENE]: Unable to cross agent to neighbouring region, because there is no AgentTransferModule");
+            }
+
+            return false;
+        }
+
+        public void SendOutChildAgentUpdates(AgentPosition cadu, ScenePresence presence)
+        {
+            m_sceneGridService.SendChildAgentDataUpdate(cadu, presence);
+        }
+
+        #endregion
+
+        #region Other Methods
+
+        protected override IConfigSource GetConfig()
+        {
+            return m_config;
+        }
+
+        #endregion
+
+        public void HandleObjectPermissionsUpdate(IClientAPI controller, UUID agentID, UUID sessionID, byte field, uint localId, uint mask, byte set)
+        {
+            // Check for spoofing..  since this is permissions we're talking about here!
+            if ((controller.SessionId == sessionID) && (controller.AgentId == agentID))
+            {
+                // Tell the object to do permission update
+                if (localId != 0)
+                {
+                    SceneObjectGroup chObjectGroup = GetGroupByPrim(localId);
+                    if (chObjectGroup != null)
+                    {
+                        chObjectGroup.UpdatePermissions(agentID, field, localId, mask, set);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Causes all clients to get a full object update on all of the objects in the scene.
+        /// </summary>
+        public void ForceClientUpdate()
+        {
+            EntityBase[] entityList = GetEntities();
+            foreach (EntityBase ent in entityList)
+            {
+                if (ent is SceneObjectGroup)
+                {
+                    ((SceneObjectGroup)ent).ScheduleGroupForFullUpdate();
+                }
+            }
+        }
+
+        /// <summary>
+        /// This is currently only used for scale (to scale to MegaPrim size)
+        /// There is a console command that calls this in OpenSimMain
+        /// </summary>
+        /// <param name="cmdparams"></param>
+        public void HandleEditCommand(string[] cmdparams)
+        {
+            m_log.DebugFormat("Searching for Primitive: '{0}'", cmdparams[2]);
+
+            EntityBase[] entityList = GetEntities();
+            foreach (EntityBase ent in entityList)
+            {
+                if (ent is SceneObjectGroup)
+                {
+                    SceneObjectPart part = ((SceneObjectGroup)ent).GetPart(((SceneObjectGroup)ent).UUID);
+                    if (part != null)
+                    {
+                        if (part.Name == cmdparams[2])
+                        {
+                            part.Resize(
+                                new Vector3(Convert.ToSingle(cmdparams[3]), Convert.ToSingle(cmdparams[4]),
+                                              Convert.ToSingle(cmdparams[5])));
+
+                            m_log.DebugFormat("Edited scale of Primitive: {0}", part.Name);
+                        }
+                    }
+                }
+            }
+        }
+
+        #region Script Handling Methods
+
+        /// <summary>
+        /// Console command handler to send script command to script engine.
+        /// </summary>
+        /// <param name="args"></param>
+        public void SendCommandToPlugins(string[] args)
+        {
+            m_eventManager.TriggerOnPluginConsole(args);
+        }
+
+        public LandData GetLandData(float x, float y)
+        {
+            return LandChannel.GetLandObject(x, y).LandData;
+        }
+
+        /// <summary>
+        /// Get LandData by position.
+        /// </summary>
+        /// <param name="pos"></param>
+        /// <returns></returns>
+        public LandData GetLandData(Vector3 pos)
+        {
+            return GetLandData(pos.X, pos.Y);
+        }
+
+        public LandData GetLandData(uint x, uint y)
+        {
+            m_log.DebugFormat("[SCENE]: returning land for {0},{1}", x, y);
+            return LandChannel.GetLandObject((int)x, (int)y).LandData;
+        }
+
+        #endregion
+
+        #region Script Engine
+
+        private bool ScriptDanger(SceneObjectPart part, Vector3 pos)
+        {
+            ILandObject parcel = LandChannel.GetLandObject(pos.X, pos.Y);
+            if (part != null)
+            {
+                if (parcel != null)
+                {
+                    if ((parcel.LandData.Flags & (uint)ParcelFlags.AllowOtherScripts) != 0)
+                    {
+                        return true;
+                    }
+                    else if ((part.OwnerID == parcel.LandData.OwnerID) || Permissions.IsGod(part.OwnerID))
+                    {
+                        return true;
+                    }
+                    else if (((parcel.LandData.Flags & (uint)ParcelFlags.AllowGroupScripts) != 0)
+                        && (parcel.LandData.GroupID != UUID.Zero) && (parcel.LandData.GroupID == part.GroupID))
+                    {
+                        return true;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+                else
+                {
+
+                    if (pos.X > 0f && pos.X < RegionInfo.RegionSizeX && pos.Y > 0f && pos.Y < RegionInfo.RegionSizeY)
+                    {
+                        // The only time parcel != null when an object is inside a region is when
+                        // there is nothing behind the landchannel.  IE, no land plugin loaded.
+                        return true;
+                    }
+                    else
+                    {
+                        // The object is outside of this region.  Stop piping events to it.
+                        return false;
+                    }
+                }
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public bool ScriptDanger(uint localID, Vector3 pos)
+        {
+            SceneObjectPart part = GetSceneObjectPart(localID);
+            if (part != null)
+            {
+                return ScriptDanger(part, pos);
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public bool PipeEventsForScript(uint localID)
+        {
+            SceneObjectPart part = GetSceneObjectPart(localID);
+
+            if (part != null)
+            {
+                SceneObjectPart parent = part.ParentGroup.RootPart;
+                return ScriptDanger(parent, parent.GetWorldPosition());
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        #endregion
+
+        #region SceneGraph wrapper methods
+
+        /// <summary>
+        ///
+        /// </summary>
+        /// <param name="localID"></param>
+        /// <returns></returns>
+        public UUID ConvertLocalIDToFullID(uint localID)
+        {
+            return m_sceneGraph.ConvertLocalIDToFullID(localID);
+        }
+
+        public void SwapRootAgentCount(bool rootChildChildRootTF)
+        {
+            m_sceneGraph.SwapRootChildAgent(rootChildChildRootTF);
+        }
+
+        public void AddPhysicalPrim(int num)
+        {
+            m_sceneGraph.AddPhysicalPrim(num);
+        }
+
+        public void RemovePhysicalPrim(int num)
+        {
+            m_sceneGraph.RemovePhysicalPrim(num);
+        }
+
+        public int GetRootAgentCount()
+        {
+            return m_sceneGraph.GetRootAgentCount();
+        }
+
+        public int GetChildAgentCount()
+        {
+            return m_sceneGraph.GetChildAgentCount();
+        }
+
+        /// <summary>
+        /// Request a scene presence by UUID. Fast, indexed lookup.
+        /// </summary>
+        /// <param name="agentID"></param>
+        /// <returns>null if the presence was not found</returns>
+        public ScenePresence GetScenePresence(UUID agentID)
+        {
+            return m_sceneGraph.GetScenePresence(agentID);
+        }
+
+        /// <summary>
+        /// Request the scene presence by name.
+        /// </summary>
+        /// <param name="firstName"></param>
+        /// <param name="lastName"></param>
+        /// <returns>null if the presence was not found</returns>
+        public ScenePresence GetScenePresence(string firstName, string lastName)
+        {
+            return m_sceneGraph.GetScenePresence(firstName, lastName);
+        }
+
+        /// <summary>
+        /// Request the scene presence by localID.
+        /// </summary>
+        /// <param name="localID"></param>
+        /// <returns>null if the presence was not found</returns>
+        public ScenePresence GetScenePresence(uint localID)
+        {
+            return m_sceneGraph.GetScenePresence(localID);
+        }
+
+        /// <summary>
+        /// Gets all the scene presences in this scene.
+        /// </summary>
+        /// <remarks>
+        /// This method will return both root and child scene presences.
+        ///
+        /// Consider using ForEachScenePresence() or ForEachRootScenePresence() if possible since these will not
+        /// involving creating a new List object.
+        /// </remarks>
+        /// <returns>
+        /// A list of the scene presences.  Adding or removing from the list will not affect the presences in the scene.
+        /// </returns>
+        public List<ScenePresence> GetScenePresences()
+        {
+            return new List<ScenePresence>(m_sceneGraph.GetScenePresences());
+        }
+
+        /// <summary>
+        /// Performs action on all avatars in the scene (root scene presences)
+        /// Avatars may be an NPC or a 'real' client.
+        /// </summary>
+        /// <param name="action"></param>
+        public void ForEachRootScenePresence(Action<ScenePresence> action)
+        {
+            m_sceneGraph.ForEachAvatar(action);
+        }
+
+        /// <summary>
+        /// Performs action on all scene presences (root and child)
+        /// </summary>
+        /// <param name="action"></param>
+        public void ForEachScenePresence(Action<ScenePresence> action)
+        {
+            m_sceneGraph.ForEachScenePresence(action);
+        }
+
+        /// <summary>
+        /// Get all the scene object groups.
+        /// </summary>
+        /// <returns>
+        /// The scene object groups.  If the scene is empty then an empty list is returned.
+        /// </returns>
+        public List<SceneObjectGroup> GetSceneObjectGroups()
+        {
+            return m_sceneGraph.GetSceneObjectGroups();
+        }
+
+        /// <summary>
+        /// Get a group via its UUID
+        /// </summary>
+        /// <param name="fullID"></param>
+        /// <returns>null if no group with that id exists</returns>
+        public SceneObjectGroup GetSceneObjectGroup(UUID fullID)
+        {
+            return m_sceneGraph.GetSceneObjectGroup(fullID);
+        }
+
+        /// <summary>
+        /// Get a group via its local ID
+        /// </summary>
+        /// <remarks>This will only return a group if the local ID matches a root part</remarks>
+        /// <param name="localID"></param>
+        /// <returns>null if no group with that id exists</returns>
+        public SceneObjectGroup GetSceneObjectGroup(uint localID)
+        {
+            return m_sceneGraph.GetSceneObjectGroup(localID);
+        }
+
+        /// <summary>
+        /// Get a group by name from the scene (will return the first
+        /// found, if there are more than one prim with the same name)
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns>null if no group with that name exists</returns>
+        public SceneObjectGroup GetSceneObjectGroup(string name)
+        {
+            return m_sceneGraph.GetSceneObjectGroup(name);
+        }
+
+        /// <summary>
+        /// Attempt to get the SOG via its UUID
+        /// </summary>
+        /// <param name="fullID"></param>
+        /// <param name="sog"></param>
+        /// <returns></returns>
+        public bool TryGetSceneObjectGroup(UUID fullID, out SceneObjectGroup sog)
+        {
+            sog = GetSceneObjectGroup(fullID);
+            return sog != null;
+        }
+
+        /// <summary>
+        /// Get a prim by name from the scene (will return the first
+        /// found, if there are more than one prim with the same name)
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        public SceneObjectPart GetSceneObjectPart(string name)
+        {
+            return m_sceneGraph.GetSceneObjectPart(name);
+        }
+
+        /// <summary>
+        /// Get a prim via its local id
+        /// </summary>
+        /// <param name="localID"></param>
+        /// <returns></returns>
+        public SceneObjectPart GetSceneObjectPart(uint localID)
+        {
+            return m_sceneGraph.GetSceneObjectPart(localID);
+        }
+
+        /// <summary>
+        /// Get a prim via its UUID
+        /// </summary>
+        /// <param name="fullID"></param>
+        /// <returns></returns>
+        public SceneObjectPart GetSceneObjectPart(UUID fullID)
+        {
+            return m_sceneGraph.GetSceneObjectPart(fullID);
+        }
+
+        /// <summary>
+        /// Attempt to get a prim via its UUID
+        /// </summary>
+        /// <param name="fullID"></param>
+        /// <param name="sop"></param>
+        /// <returns></returns>
+        public bool TryGetSceneObjectPart(UUID fullID, out SceneObjectPart sop)
+        {
+            sop = GetSceneObjectPart(fullID);
+            return sop != null;
+        }
+
+        /// <summary>
+        /// Get a scene object group that contains the prim with the given local id
+        /// </summary>
+        /// <param name="localID"></param>
+        /// <returns>null if no scene object group containing that prim is found</returns>        
+        public SceneObjectGroup GetGroupByPrim(uint localID)
+        {
+            return m_sceneGraph.GetGroupByPrim(localID);
+        }
+
+        /// <summary>
+        /// Get a scene object group that contains the prim with the given uuid
+        /// </summary>
+        /// <param name="fullID"></param>
+        /// <returns>null if no scene object group containing that prim is found</returns>     
+        public SceneObjectGroup GetGroupByPrim(UUID fullID)
+        {
+            return m_sceneGraph.GetGroupByPrim(fullID);
+        }
+
+        public override bool TryGetScenePresence(UUID agentID, out ScenePresence sp)
+        {
+            return m_sceneGraph.TryGetScenePresence(agentID, out sp);
+        }
+
+        public bool TryGetAvatarByName(string avatarName, out ScenePresence avatar)
+        {
+            return m_sceneGraph.TryGetAvatarByName(avatarName, out avatar);
+        }
+
+        /// <summary>
+        /// Perform an action on all clients with an avatar in this scene (root only)
+        /// </summary>
+        /// <param name="action"></param>
+        public void ForEachRootClient(Action<IClientAPI> action)
+        {
+            ForEachRootScenePresence(delegate(ScenePresence presence)
+            {
+                action(presence.ControllingClient);
+            });
+        }
+
+        /// <summary>
+        /// Perform an action on all clients connected to the region (root and child)
+        /// </summary>
+        /// <param name="action"></param>
+        public void ForEachClient(Action<IClientAPI> action)
+        {
+            m_clientManager.ForEachSync(action);
+        }
+
+        public bool TryGetClient(UUID avatarID, out IClientAPI client)
+        {
+            return m_clientManager.TryGetValue(avatarID, out client);
+        }
+
+        public bool TryGetClient(System.Net.IPEndPoint remoteEndPoint, out IClientAPI client)
+        {
+            return m_clientManager.TryGetValue(remoteEndPoint, out client);
+        }
+
+        public void ForEachSOG(Action<SceneObjectGroup> action)
+        {
+            m_sceneGraph.ForEachSOG(action);
+        }
+
+        /// <summary>
+        /// Returns a list of the entities in the scene.  This is a new list so operations perform on the list itself
+        /// will not affect the original list of objects in the scene.
+        /// </summary>
+        /// <returns></returns>
+        public EntityBase[] GetEntities()
+        {
+            return m_sceneGraph.GetEntities();
+        }
+
+        #endregion
+
+
+// Commented pending deletion since this method no longer appears to do anything at all
+//        public bool NeedSceneCacheClear(UUID agentID)
+//        {
+//            IInventoryTransferModule inv = RequestModuleInterface<IInventoryTransferModule>();
+//            if (inv == null)
+//                return true;
+//
+//            return inv.NeedSceneCacheClear(agentID, this);
+//        }
+
+        public void CleanTempObjects()
+        {
+            EntityBase[] entities = GetEntities();
+            foreach (EntityBase obj in entities)
+            {
+                if (obj is SceneObjectGroup)
+                {
+                    SceneObjectGroup grp = (SceneObjectGroup)obj;
+
+                    if (!grp.IsDeleted)
+                    {
+                        if ((grp.RootPart.Flags & PrimFlags.TemporaryOnRez) != 0)
+                        {
+                            if (grp.RootPart.Expires <= DateTime.Now)
+                                DeleteSceneObject(grp, false);
+                        }
+                    }
+                }
+            }
+
+        }
+
+        public void DeleteFromStorage(UUID uuid)
+        {
+            SimulationDataService.RemoveObject(uuid, RegionInfo.RegionID);
+        }
+
+        public int GetHealth()
+        {
+            // Returns:
+            // 1 = sim is up and accepting http requests. The heartbeat has
+            // stopped and the sim is probably locked up, but a remote
+            // admin restart may succeed
+            //
+            // 2 = Sim is up and the heartbeat is running. The sim is likely
+            // usable for people within and logins _may_ work
+            //
+            // 3 = We have seen a new user enter within the past 4 minutes
+            // which can be seen as positive confirmation of sim health
+            //
+            int health = 1; // Start at 1, means we're up
+
+            if ((Util.EnvironmentTickCountSubtract(m_lastFrameTick)) < 1000)
+                health += 1;
+            else
+                return health;
+
+            // A login in the last 4 mins? We can't be doing too badly
+            //
+            if ((Util.EnvironmentTickCountSubtract(m_LastLogin)) < 240000)
+                health++;
+            else
+                return health;
+
+//            CheckHeartbeat();
+
+            return health;
+        }
+
+        // This callback allows the PhysicsScene to call back to its caller (the SceneGraph) and
+        // update non-physical objects like the joint proxy objects that represent the position
+        // of the joints in the scene.
+
+        // This routine is normally called from within a lock (OdeLock) from within the OdePhysicsScene
+        // WARNING: be careful of deadlocks here if you manipulate the scene. Remember you are being called
+        // from within the OdePhysicsScene.
+
+        protected internal void jointMoved(PhysicsJoint joint)
+        {
+            // m_parentScene.PhysicsScene.DumpJointInfo(); // non-thread-locked version; we should already be in a lock (OdeLock) when this callback is invoked
+            SceneObjectPart jointProxyObject = GetSceneObjectPart(joint.ObjectNameInScene);
+            if (jointProxyObject == null)
+            {
+                jointErrorMessage(joint, "WARNING, joint proxy not found, name " + joint.ObjectNameInScene);
+                return;
+            }
+
+            // now update the joint proxy object in the scene to have the position of the joint as returned by the physics engine
+            SceneObjectPart trackedBody = GetSceneObjectPart(joint.TrackedBodyName); // FIXME: causes a sequential lookup
+            if (trackedBody == null) return; // the actor may have been deleted but the joint still lingers around a few frames waiting for deletion. during this time, trackedBody is NULL to prevent further motion of the joint proxy.
+            jointProxyObject.Velocity = trackedBody.Velocity;
+            jointProxyObject.AngularVelocity = trackedBody.AngularVelocity;
+            switch (joint.Type)
+            {
+                case PhysicsJointType.Ball:
+                    {
+                        Vector3 jointAnchor = PhysicsScene.GetJointAnchor(joint);
+                        Vector3 proxyPos = jointAnchor;
+                        jointProxyObject.ParentGroup.UpdateGroupPosition(proxyPos); // schedules the entire group for a terse update
+                    }
+                    break;
+
+                case PhysicsJointType.Hinge:
+                    {
+                        Vector3 jointAnchor = PhysicsScene.GetJointAnchor(joint);
+
+                        // Normally, we would just ask the physics scene to return the axis for the joint.
+                        // Unfortunately, ODE sometimes returns <0,0,0> for the joint axis, which should
+                        // never occur. Therefore we cannot rely on ODE to always return a correct joint axis.
+                        // Therefore the following call does not always work:
+                        //PhysicsVector phyJointAxis = _PhyScene.GetJointAxis(joint);
+
+                        // instead we compute the joint orientation by saving the original joint orientation
+                        // relative to one of the jointed bodies, and applying this transformation
+                        // to the current position of the jointed bodies (the tracked body) to compute the
+                        // current joint orientation.
+
+                        if (joint.TrackedBodyName == null)
+                        {
+                            jointErrorMessage(joint, "joint.TrackedBodyName is null, joint " + joint.ObjectNameInScene);
+                        }
+
+                        Vector3 proxyPos = jointAnchor;
+                        Quaternion q = trackedBody.RotationOffset * joint.LocalRotation;
+
+                        jointProxyObject.ParentGroup.UpdateGroupPosition(proxyPos); // schedules the entire group for a terse update
+                        jointProxyObject.ParentGroup.UpdateGroupRotationR(q); // schedules the entire group for a terse update
+                    }
+                    break;
+            }
+        }
+
+        // This callback allows the PhysicsScene to call back to its caller (the SceneGraph) and
+        // update non-physical objects like the joint proxy objects that represent the position
+        // of the joints in the scene.
+
+        // This routine is normally called from within a lock (OdeLock) from within the OdePhysicsScene
+        // WARNING: be careful of deadlocks here if you manipulate the scene. Remember you are being called
+        // from within the OdePhysicsScene.
+        protected internal void jointDeactivated(PhysicsJoint joint)
+        {
+            //m_log.Debug("[NINJA] SceneGraph.jointDeactivated, joint:" + joint.ObjectNameInScene);
+            SceneObjectPart jointProxyObject = GetSceneObjectPart(joint.ObjectNameInScene);
+            if (jointProxyObject == null)
+            {
+                jointErrorMessage(joint, "WARNING, trying to deactivate (stop interpolation of) joint proxy, but not found, name " + joint.ObjectNameInScene);
+                return;
+            }
+
+            // turn the proxy non-physical, which also stops its client-side interpolation
+            bool wasUsingPhysics = ((jointProxyObject.Flags & PrimFlags.Physics) != 0);
+            if (wasUsingPhysics)
+            {
+                jointProxyObject.UpdatePrimFlags(false, false, true, false); // FIXME: possible deadlock here; check to make sure all the scene alterations set into motion here won't deadlock
+            }
+        }
+
+        // This callback allows the PhysicsScene to call back to its caller (the SceneGraph) and
+        // alert the user of errors by using the debug channel in the same way that scripts alert
+        // the user of compile errors.
+
+        // This routine is normally called from within a lock (OdeLock) from within the OdePhysicsScene
+        // WARNING: be careful of deadlocks here if you manipulate the scene. Remember you are being called
+        // from within the OdePhysicsScene.
+        public void jointErrorMessage(PhysicsJoint joint, string message)
+        {
+            if (joint != null)
+            {
+                if (joint.ErrorMessageCount > PhysicsJoint.maxErrorMessages)
+                    return;
+
+                SceneObjectPart jointProxyObject = GetSceneObjectPart(joint.ObjectNameInScene);
+                if (jointProxyObject != null)
+                {
+                    SimChat(Utils.StringToBytes("[NINJA]: " + message),
+                        ChatTypeEnum.DebugChannel,
+                        2147483647,
+                        jointProxyObject.AbsolutePosition,
+                        jointProxyObject.Name,
+                        jointProxyObject.UUID,
+                        false);
+
+                    joint.ErrorMessageCount++;
+
+                    if (joint.ErrorMessageCount > PhysicsJoint.maxErrorMessages)
+                    {
+                        SimChat(Utils.StringToBytes("[NINJA]: Too many messages for this joint, suppressing further messages."),
+                            ChatTypeEnum.DebugChannel,
+                            2147483647,
+                            jointProxyObject.AbsolutePosition,
+                            jointProxyObject.Name,
+                            jointProxyObject.UUID,
+                            false);
+                    }
+                }
+                else
+                {
+                    // couldn't find the joint proxy object; the error message is silently suppressed
+                }
+            }
+        }
+
+        public Scene ConsoleScene()
+        {
+            if (MainConsole.Instance == null)
+                return null;
+            if (MainConsole.Instance.ConsoleScene is Scene)
+                return (Scene)MainConsole.Instance.ConsoleScene;
+            return null;
+        }
+
+        // Get terrain height at the specified <x,y> location.
+        // Presumes the underlying implementation is a heightmap which is a 1m grid.
+        // Finds heightmap grid points before and after the point and
+        //    does a linear approximation of the height at this intermediate point.
+        public float GetGroundHeight(float x, float y)
+        {
+            if (x < 0)
+                x = 0;
+            if (x >= Heightmap.Width)
+                x = Heightmap.Width - 1;
+            if (y < 0)
+                y = 0;
+            if (y >= Heightmap.Height)
+                y = Heightmap.Height - 1;
+
+            Vector3 p0 = new Vector3(x, y, (float)Heightmap[(int)x, (int)y]);
+            Vector3 p1 = p0;
+            Vector3 p2 = p0;
+
+            p1.X += 1.0f;
+            if (p1.X < Heightmap.Width)
+                p1.Z = (float)Heightmap[(int)p1.X, (int)p1.Y];
+
+            p2.Y += 1.0f;
+            if (p2.Y < Heightmap.Height)
+                p2.Z = (float)Heightmap[(int)p2.X, (int)p2.Y];
+
+            Vector3 v0 = new Vector3(p1.X - p0.X, p1.Y - p0.Y, p1.Z - p0.Z);
+            Vector3 v1 = new Vector3(p2.X - p0.X, p2.Y - p0.Y, p2.Z - p0.Z);
+
+            v0.Normalize();
+            v1.Normalize();
+
+            Vector3 vsn = new Vector3();
+            vsn.X = (v0.Y * v1.Z) - (v0.Z * v1.Y);
+            vsn.Y = (v0.Z * v1.X) - (v0.X * v1.Z);
+            vsn.Z = (v0.X * v1.Y) - (v0.Y * v1.X);
+            vsn.Normalize();
+
+            float xdiff = x - (float)((int)x);
+            float ydiff = y - (float)((int)y);
+
+            return (((vsn.X * xdiff) + (vsn.Y * ydiff)) / (-1 * vsn.Z)) + p0.Z;
+        }
+
+//        private void CheckHeartbeat()
+//        {
+//            if (m_firstHeartbeat)
+//                return;
+//
+//            if (Util.EnvironmentTickCountSubtract(m_lastFrameTick) > 2000)
+//                StartTimer();
+//        }
+
+        public override ISceneObject DeserializeObject(string representation)
+        {
+            return SceneObjectSerializer.FromXml2Format(representation);
+        }
+
+        public override bool AllowScriptCrossings
+        {
+            get { return m_allowScriptCrossings; }
+        }
+
+        public Vector3 GetNearestAllowedPosition(ScenePresence avatar)
+        {
+            return GetNearestAllowedPosition(avatar, null);
+        }
+
+        public Vector3 GetNearestAllowedPosition(ScenePresence avatar, ILandObject excludeParcel)
+        {
+            ILandObject nearestParcel = GetNearestAllowedParcel(avatar.UUID, avatar.AbsolutePosition.X, avatar.AbsolutePosition.Y, excludeParcel);
+
+            if (nearestParcel != null)
+            {
+                Vector3 dir = Vector3.Normalize(Vector3.Multiply(avatar.Velocity, -1));
+                //Try to get a location that feels like where they came from
+                Vector3? nearestPoint = GetNearestPointInParcelAlongDirectionFromPoint(avatar.AbsolutePosition, dir, nearestParcel);
+                if (nearestPoint != null)
+                {
+                    m_log.Debug("Found a sane previous position based on velocity, sending them to: " + nearestPoint.ToString());
+                    return nearestPoint.Value;
+                }
+
+                //Sometimes velocity might be zero (local teleport), so try finding point along path from avatar to center of nearest parcel
+                Vector3 directionToParcelCenter = Vector3.Subtract(GetParcelCenterAtGround(nearestParcel), avatar.AbsolutePosition);
+                dir = Vector3.Normalize(directionToParcelCenter);
+                nearestPoint = GetNearestPointInParcelAlongDirectionFromPoint(avatar.AbsolutePosition, dir, nearestParcel);
+                if (nearestPoint != null)
+                {
+                    m_log.Debug("They had a zero velocity, sending them to: " + nearestPoint.ToString());
+                    return nearestPoint.Value;
+                }
+
+                ILandObject dest = LandChannel.GetLandObject(avatar.lastKnownAllowedPosition.X, avatar.lastKnownAllowedPosition.Y);
+                if (dest != excludeParcel)
+                {
+                    // Ultimate backup if we have no idea where they are and
+                    // the last allowed position was in another parcel
+                    m_log.Debug("Have no idea where they are, sending them to: " + avatar.lastKnownAllowedPosition.ToString());
+                    return avatar.lastKnownAllowedPosition;
+                }
+
+                // else fall through to region edge
+            }
+
+            //Go to the edge, this happens in teleporting to a region with no available parcels
+            Vector3 nearestRegionEdgePoint = GetNearestRegionEdgePosition(avatar);
+
+            //m_log.Debug("They are really in a place they don't belong, sending them to: " + nearestRegionEdgePoint.ToString());
+
+            return nearestRegionEdgePoint;
+        }
+
+        private Vector3 GetParcelCenterAtGround(ILandObject parcel)
+        {
+            Vector2 center = GetParcelCenter(parcel);
+            return GetPositionAtGround(center.X, center.Y);
+        }
+
+        private Vector3? GetNearestPointInParcelAlongDirectionFromPoint(Vector3 pos, Vector3 direction, ILandObject parcel)
+        {
+            Vector3 unitDirection = Vector3.Normalize(direction);
+            //Making distance to search go through some sane limit of distance
+            for (float distance = 0; distance < Math.Max(RegionInfo.RegionSizeX, RegionInfo.RegionSizeY) * 2; distance += .5f)
+            {
+                Vector3 testPos = Vector3.Add(pos, Vector3.Multiply(unitDirection, distance));
+                if (parcel.ContainsPoint((int)testPos.X, (int)testPos.Y))
+                {
+                    return testPos;
+                }
+            }
+            return null;
+        }
+
+        public ILandObject GetNearestAllowedParcel(UUID avatarId, float x, float y)
+        {
+            return GetNearestAllowedParcel(avatarId, x, y, null);
+        }
+
+        public ILandObject GetNearestAllowedParcel(UUID avatarId, float x, float y, ILandObject excludeParcel)
+        {
+            List<ILandObject> all = AllParcels();
+            float minParcelDistance = float.MaxValue;
+            ILandObject nearestParcel = null;
+
+            foreach (var parcel in all)
+            {
+                if (!parcel.IsEitherBannedOrRestricted(avatarId) && parcel != excludeParcel)
+                {
+                    float parcelDistance = GetParcelDistancefromPoint(parcel, x, y);
+                    if (parcelDistance < minParcelDistance)
+                    {
+                        minParcelDistance = parcelDistance;
+                        nearestParcel = parcel;
+                    }
+                }
+            }
+
+            return nearestParcel;
+        }
+
+        private List<ILandObject> AllParcels()
+        {
+            return LandChannel.AllParcels();
+        }
+
+        private float GetParcelDistancefromPoint(ILandObject parcel, float x, float y)
+        {
+            return Vector2.Distance(new Vector2(x, y), GetParcelCenter(parcel));
+        }
+
+        //calculate the average center point of a parcel
+        private Vector2 GetParcelCenter(ILandObject parcel)
+        {
+            int count = 0;
+            int avgx = 0;
+            int avgy = 0;
+            for (int x = 0; x < RegionInfo.RegionSizeX; x++)
+            {
+                for (int y = 0; y < RegionInfo.RegionSizeY; y++)
+                {
+                    //Just keep a running average as we check if all the points are inside or not
+                    if (parcel.ContainsPoint(x, y))
+                    {
+                        if (count == 0)
+                        {
+                            avgx = x;
+                            avgy = y;
+                        }
+                        else
+                        {
+                            avgx = (avgx * count + x) / (count + 1);
+                            avgy = (avgy * count + y) / (count + 1);
+                        }
+                        count += 1;
+                    }
+                }
+            }
+            return new Vector2(avgx, avgy);
+        }
+
+        private Vector3 GetNearestRegionEdgePosition(ScenePresence avatar)
+        {
+            float xdistance = avatar.AbsolutePosition.X < RegionInfo.RegionSizeX / 2
+                                ? avatar.AbsolutePosition.X : RegionInfo.RegionSizeX - avatar.AbsolutePosition.X;
+            float ydistance = avatar.AbsolutePosition.Y < RegionInfo.RegionSizeY / 2
+                                ? avatar.AbsolutePosition.Y : RegionInfo.RegionSizeY - avatar.AbsolutePosition.Y;
+
+            //find out what vertical edge to go to
+            if (xdistance < ydistance)
+            {
+                if (avatar.AbsolutePosition.X < RegionInfo.RegionSizeX / 2)
+                {
+                    return GetPositionAtAvatarHeightOrGroundHeight(avatar, 0.0f, avatar.AbsolutePosition.Y);
+                }
+                else
+                {
+                    return GetPositionAtAvatarHeightOrGroundHeight(avatar, RegionInfo.RegionSizeY, avatar.AbsolutePosition.Y);
+                }
+            }
+            //find out what horizontal edge to go to
+            else
+            {
+                if (avatar.AbsolutePosition.Y < RegionInfo.RegionSizeY / 2)
+                {
+                    return GetPositionAtAvatarHeightOrGroundHeight(avatar, avatar.AbsolutePosition.X, 0.0f);
+                }
+                else
+                {
+                    return GetPositionAtAvatarHeightOrGroundHeight(avatar, avatar.AbsolutePosition.X, RegionInfo.RegionSizeY);
+                }
+            }
+        }
+
+        private Vector3 GetPositionAtAvatarHeightOrGroundHeight(ScenePresence avatar, float x, float y)
+        {
+            Vector3 ground = GetPositionAtGround(x, y);
+            if (avatar.AbsolutePosition.Z > ground.Z)
+            {
+                ground.Z = avatar.AbsolutePosition.Z;
+            }
+            return ground;
+        }
+
+        private Vector3 GetPositionAtGround(float x, float y)
+        {
+            return new Vector3(x, y, GetGroundHeight(x, y));
+        }
+
+        public List<UUID> GetEstateRegions(int estateID)
+        {
+            IEstateDataService estateDataService = EstateDataService;
+            if (estateDataService == null)
+                return new List<UUID>(0);
+
+            return estateDataService.GetRegions(estateID);
+        }
+
+        public void ReloadEstateData()
+        {
+            IEstateDataService estateDataService = EstateDataService;
+            if (estateDataService != null)
+            {
+                RegionInfo.EstateSettings = estateDataService.LoadEstateSettings(RegionInfo.RegionID, false);
+                TriggerEstateSunUpdate();
+            }
+        }
+
+        public void TriggerEstateSunUpdate()
+        {
+            EventManager.TriggerEstateToolsSunUpdate(RegionInfo.RegionHandle);
+        }
+
+        private void HandleReloadEstate(string module, string[] cmd)
+        {
+            if (MainConsole.Instance.ConsoleScene == null ||
+                (MainConsole.Instance.ConsoleScene is Scene &&
+                (Scene)MainConsole.Instance.ConsoleScene == this))
+            {
+                ReloadEstateData();
+            }
+        }
+
+        /// <summary>
+        /// Get the volume of space that will encompass all the given objects.
+        /// </summary>
+        /// <param name="objects"></param>
+        /// <param name="minX"></param>
+        /// <param name="maxX"></param>
+        /// <param name="minY"></param>
+        /// <param name="maxY"></param>
+        /// <param name="minZ"></param>
+        /// <param name="maxZ"></param>
+        /// <returns></returns>
+        public static Vector3[] GetCombinedBoundingBox(
+           List<SceneObjectGroup> objects,
+           out float minX, out float maxX, out float minY, out float maxY, out float minZ, out float maxZ)
+        {
+            minX = float.MaxValue;
+            maxX = float.MinValue;
+            minY = float.MaxValue;
+            maxY = float.MinValue;
+            minZ = float.MaxValue;
+            maxZ = float.MinValue;
+
+            List<Vector3> offsets = new List<Vector3>();
+
+            foreach (SceneObjectGroup g in objects)
+            {
+                float ominX, ominY, ominZ, omaxX, omaxY, omaxZ;
+
+                Vector3 vec = g.AbsolutePosition;
+
+                g.GetAxisAlignedBoundingBoxRaw(out ominX, out omaxX, out ominY, out omaxY, out ominZ, out omaxZ);
+
+//                m_log.DebugFormat(
+//                    "[SCENE]: For {0} found AxisAlignedBoundingBoxRaw {1}, {2}", 
+//                    g.Name, new Vector3(ominX, ominY, ominZ), new Vector3(omaxX, omaxY, omaxZ));
+
+                ominX += vec.X;
+                omaxX += vec.X;
+                ominY += vec.Y;
+                omaxY += vec.Y;
+                ominZ += vec.Z;
+                omaxZ += vec.Z;
+
+                if (minX > ominX)
+                    minX = ominX;
+                if (minY > ominY)
+                    minY = ominY;
+                if (minZ > ominZ)
+                    minZ = ominZ;
+                if (maxX < omaxX)
+                    maxX = omaxX;
+                if (maxY < omaxY)
+                    maxY = omaxY;
+                if (maxZ < omaxZ)
+                    maxZ = omaxZ;
+            }
+
+            foreach (SceneObjectGroup g in objects)
+            {
+                Vector3 vec = g.AbsolutePosition;
+                vec.X -= minX;
+                vec.Y -= minY;
+                vec.Z -= minZ;
+
+                offsets.Add(vec);
+            }
+
+            return offsets.ToArray();
+        }
+
+        /// <summary>
+        /// Regenerate the maptile for this scene.
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void RegenerateMaptile()
+        {
+            IWorldMapModule mapModule = RequestModuleInterface<IWorldMapModule>();
+            if (mapModule != null)
+                mapModule.GenerateMaptile();
+        }
+
+        private void RegenerateMaptileAndReregister(object sender, ElapsedEventArgs e)
+        {
+            RegenerateMaptile();
+
+            // We need to propagate the new image UUID to the grid service
+            // so that all simulators can retrieve it
+            string error = GridService.RegisterRegion(RegionInfo.ScopeID, new GridRegion(RegionInfo));
+            if (error != string.Empty)
+            throw new Exception(error);
+        }
+
+        /// <summary>
+        /// This method is called across the simulation connector to
+        /// determine if a given agent is allowed in this region
+        /// AS A ROOT AGENT
+        /// </summary>
+        /// <remarks>
+        /// Returning false here will prevent them
+        /// from logging into the region, teleporting into the region
+        /// or corssing the broder walking, but will NOT prevent
+        /// child agent creation, thereby emulating the SL behavior.
+        /// </remarks>
+        /// <param name='agentID'>The visitor's User ID</param>
+        /// <param name="agentHomeURI">The visitor's Home URI (may be null)</param>
+        /// <param name='position'></param>
+        /// <param name='reason'></param>
+        /// <returns></returns>
+        public bool QueryAccess(UUID agentID, string agentHomeURI, bool viaTeleport, Vector3 position, List<UUID> features, out string reason)
+        {
+            reason = string.Empty;
+
+            if (Permissions.IsGod(agentID))
+            {
+                reason = String.Empty;
+                return true;
+            }
+
+            if (!AllowAvatarCrossing && !viaTeleport)
+                return false;
+
+            // FIXME: Root agent count is currently known to be inaccurate.  This forces a recount before we check.
+            // However, the long term fix is to make sure root agent count is always accurate.
+            m_sceneGraph.RecalculateStats();
+
+            int num = m_sceneGraph.GetRootAgentCount();
+
+            if (num >= RegionInfo.RegionSettings.AgentLimit)
+            {
+                if (!Permissions.IsAdministrator(agentID))
+                {
+                    reason = "The region is full";
+
+                    m_log.DebugFormat(
+                        "[SCENE]: Denying presence with id {0} entry into {1} since region is at agent limit of {2}",
+                        agentID, RegionInfo.RegionName, RegionInfo.RegionSettings.AgentLimit);
+
+                    return false;
+                }
+            }
+
+            ScenePresence presence = GetScenePresence(agentID);
+            IClientAPI client = null;
+            AgentCircuitData aCircuit = null;
+
+            if (presence != null)
+            {
+                client = presence.ControllingClient;
+                if (client != null)
+                    aCircuit = client.RequestClientInfo();
+            }
+
+            // We may be called before there is a presence or a client.
+            // Fake AgentCircuitData to keep IAuthorizationModule smiling
+            if (client == null)
+            {
+                aCircuit = new AgentCircuitData();
+                aCircuit.AgentID = agentID;
+                aCircuit.firstname = String.Empty;
+                aCircuit.lastname = String.Empty;
+            }
+
+            try
+            {
+                if (!AuthorizeUser(aCircuit, false, out reason))
+                {
+                    //m_log.DebugFormat("[SCENE]: Denying access for {0}", agentID);
+                    return false;
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.DebugFormat("[SCENE]: Exception authorizing agent: {0} " + e.StackTrace, e.Message);
+                reason = "Error authorizing agent: " + e.Message;
+                return false;
+            }
+
+            if (viaTeleport)
+            {
+                if (!RegionInfo.EstateSettings.AllowDirectTeleport)
+                {
+                    SceneObjectGroup telehub;
+                    if (RegionInfo.RegionSettings.TelehubObject != UUID.Zero && (telehub = GetSceneObjectGroup(RegionInfo.RegionSettings.TelehubObject)) != null)
+                    {
+                        List<SpawnPoint> spawnPoints = RegionInfo.RegionSettings.SpawnPoints();
+                        bool banned = true;
+                        foreach (SpawnPoint sp in spawnPoints)
+                        {
+                            Vector3 spawnPoint = sp.GetLocation(telehub.AbsolutePosition, telehub.GroupRotation);
+                            ILandObject land = LandChannel.GetLandObject(spawnPoint.X, spawnPoint.Y);
+                            if (land == null)
+                                continue;
+                            if (land.IsEitherBannedOrRestricted(agentID))
+                                continue;
+                            banned = false;
+                            break;
+                        }
+
+                        if (banned)
+                        {
+                            if (Permissions.IsAdministrator(agentID) == false || Permissions.IsGridGod(agentID) == false)
+                            {
+                                reason = "No suitable landing point found";
+                                return false;
+                            }
+                            reason = "Administrative access only";
+                            return true;
+                        }
+                    }
+                }
+
+                float posX = 128.0f;
+                float posY = 128.0f;
+
+                if (!TestLandRestrictions(agentID, out reason, ref posX, ref posY))
+                {
+                    // m_log.DebugFormat("[SCENE]: Denying {0} because they are banned on all parcels", agentID);
+                    reason = "You are banned from the region on all parcels";
+                    return false;
+                }
+            }
+            else // Walking
+            {
+                ILandObject land = LandChannel.GetLandObject(position.X, position.Y);
+                if (land == null)
+                {
+                    reason = "No parcel found";
+                    return false;
+                }
+
+                bool banned = land.IsBannedFromLand(agentID);
+                bool restricted = land.IsRestrictedFromLand(agentID);
+
+                if (banned || restricted)
+                {
+                    if (banned)
+                        reason = "You are banned from the parcel";
+                    else
+                        reason = "The parcel is restricted";
+                    return false;
+                }
+            }
+
+            reason = String.Empty;
+            return true;
+        }
+
+        /// <summary>
+        /// This method deals with movement when an avatar is automatically moving (but this is distinct from the
+        /// autopilot that moves an avatar to a sit target!.
+        /// </summary>
+        /// <remarks>
+        /// This is not intended as a permament location for this method.
+        /// </remarks>
+        /// <param name="presence"></param>
+        private void HandleOnSignificantClientMovement(ScenePresence presence)
+        {
+            if (presence.MovingToTarget)
+            {
+                double distanceToTarget = Util.GetDistanceTo(presence.AbsolutePosition, presence.MoveToPositionTarget);
+//                            m_log.DebugFormat(
+//                                "[SCENE]: Abs pos of {0} is {1}, target {2}, distance {3}",
+//                                presence.Name, presence.AbsolutePosition, presence.MoveToPositionTarget, distanceToTarget);
+
+                // Check the error term of the current position in relation to the target position
+                if (distanceToTarget <= ScenePresence.SIGNIFICANT_MOVEMENT)
+                {
+                    // We are close enough to the target
+//                        m_log.DebugFormat("[SCENEE]: Stopping autopilot of  {0}", presence.Name);
+
+                    presence.Velocity = Vector3.Zero;
+                    presence.AbsolutePosition = presence.MoveToPositionTarget;
+                    presence.ResetMoveToTarget();
+
+                    if (presence.Flying)
+                    {
+                        // A horrible hack to stop the avatar dead in its tracks rather than having them overshoot
+                        // the target if flying.
+                        // We really need to be more subtle (slow the avatar as it approaches the target) or at
+                        // least be able to set collision status once, rather than 5 times to give it enough
+                        // weighting so that that PhysicsActor thinks it really is colliding.
+                        for (int i = 0; i < 5; i++)
+                            presence.IsColliding = true;
+
+                        if (presence.LandAtTarget)
+                            presence.Flying = false;
+
+//                            Vector3 targetPos = presence.MoveToPositionTarget;
+//                            float terrainHeight = (float)presence.Scene.Heightmap[(int)targetPos.X, (int)targetPos.Y];
+//                            if (targetPos.Z - terrainHeight < 0.2)
+//                            {
+//                                presence.Flying = false;
+//                            }
+                    }
+
+//                        m_log.DebugFormat(
+//                            "[SCENE]: AgentControlFlags {0}, MovementFlag {1} for {2}",
+//                            presence.AgentControlFlags, presence.MovementFlag, presence.Name);
+                }
+                else
+                {
+//                        m_log.DebugFormat(
+//                            "[SCENE]: Updating npc {0} at {1} for next movement to {2}",
+//                            presence.Name, presence.AbsolutePosition, presence.MoveToPositionTarget);
+
+                    Vector3 agent_control_v3 = new Vector3();
+                    presence.HandleMoveToTargetUpdate(1, ref agent_control_v3);
+                    presence.AddNewMovement(agent_control_v3);
+                }
+            }
+        }
+
+        // manage and select spawn points in sequence
+        public int SpawnPoint()
+        {
+            int spawnpoints = RegionInfo.RegionSettings.SpawnPoints().Count;
+
+            if (spawnpoints == 0)
+                return 0;
+
+            m_SpawnPoint++;
+            if (m_SpawnPoint > spawnpoints)
+                m_SpawnPoint = 1;
+            return m_SpawnPoint - 1;
+        }
+
+        /// <summary>
+        /// Wrappers to get physics modules retrieve assets. 
+        /// </summary>
+        /// <remarks>
+        /// Has to be done this way
+        /// because we can't assign the asset service to physics directly - at the
+        /// time physics are instantiated it's not registered but it will be by
+        /// the time the first prim exists.
+        /// </remarks>
+        /// <param name="assetID"></param>
+        /// <param name="callback"></param>
+        public void PhysicsRequestAsset(UUID assetID, AssetReceivedDelegate callback)
+        {
+            AssetService.Get(assetID.ToString(), callback, PhysicsAssetReceived);
+        }
+
+        private void PhysicsAssetReceived(string id, Object sender, AssetBase asset)
+        {
+            AssetReceivedDelegate callback = (AssetReceivedDelegate)sender;
+
+            callback(asset);
+        }
+
+        public string GetExtraSetting(string name)
+        {
+            if (m_extraSettings == null)
+                return String.Empty;
+
+            string val;
+
+            if (!m_extraSettings.TryGetValue(name, out val))
+                return String.Empty;
+
+            return val;
+        }
+
+        public void StoreExtraSetting(string name, string val)
+        {
+            if (m_extraSettings == null)
+                return;
+
+            string oldVal;
+
+            if (m_extraSettings.TryGetValue(name, out oldVal))
+            {
+                if (oldVal == val)
+                    return;
+            }
+
+            m_extraSettings[name] = val;
+
+            m_SimulationDataService.SaveExtra(RegionInfo.RegionID, name, val);
+
+            m_eventManager.TriggerExtraSettingChanged(this, name, val);
+        }
+
+        public void RemoveExtraSetting(string name)
+        {
+            if (m_extraSettings == null)
+                return;
+
+            if (!m_extraSettings.ContainsKey(name))
+                return;
+
+            m_extraSettings.Remove(name);
+
+            m_SimulationDataService.RemoveExtra(RegionInfo.RegionID, name);
+
+            m_eventManager.TriggerExtraSettingChanged(this, name, String.Empty);
+        }
+    }
+}