this is step 2 of 2 of the OpenSim.Region.Environment refactor.

NOTHING has been deleted or moved off to forge at this point.  what
has happened is that OpenSim.Region.Environment.Modules has been split
in two:

- OpenSim.Region.CoreModules: all those modules that are either
  directly or indirectly referenced from  other  OpenSim packages, or
  that provide functionality that the OpenSim developer community
  considers core functionality:

      CoreModules/Agent/AssetTransaction
      CoreModules/Agent/Capabilities
      CoreModules/Agent/TextureDownload
      CoreModules/Agent/TextureSender
      CoreModules/Agent/TextureSender/Tests
      CoreModules/Agent/Xfer
      CoreModules/Avatar/AvatarFactory
      CoreModules/Avatar/Chat/ChatModule
      CoreModules/Avatar/Combat
      CoreModules/Avatar/Currency/SampleMoney
      CoreModules/Avatar/Dialog
      CoreModules/Avatar/Friends
      CoreModules/Avatar/Gestures
      CoreModules/Avatar/Groups
      CoreModules/Avatar/InstantMessage
      CoreModules/Avatar/Inventory
      CoreModules/Avatar/Inventory/Archiver
      CoreModules/Avatar/Inventory/Transfer
      CoreModules/Avatar/Lure
      CoreModules/Avatar/ObjectCaps
      CoreModules/Avatar/Profiles
      CoreModules/Communications/Local
      CoreModules/Communications/REST
      CoreModules/Framework/EventQueue
      CoreModules/Framework/InterfaceCommander
      CoreModules/Hypergrid
      CoreModules/InterGrid
      CoreModules/Scripting/DynamicTexture
      CoreModules/Scripting/EMailModules
      CoreModules/Scripting/HttpRequest
      CoreModules/Scripting/LoadImageURL
      CoreModules/Scripting/VectorRender
      CoreModules/Scripting/WorldComm
      CoreModules/Scripting/XMLRPC
      CoreModules/World/Archiver
      CoreModules/World/Archiver/Tests
      CoreModules/World/Estate
      CoreModules/World/Land
      CoreModules/World/Permissions
      CoreModules/World/Serialiser
      CoreModules/World/Sound
      CoreModules/World/Sun
      CoreModules/World/Terrain
      CoreModules/World/Terrain/DefaultEffects
      CoreModules/World/Terrain/DefaultEffects/bin
      CoreModules/World/Terrain/DefaultEffects/bin/Debug
      CoreModules/World/Terrain/Effects
      CoreModules/World/Terrain/FileLoaders
      CoreModules/World/Terrain/FloodBrushes
      CoreModules/World/Terrain/PaintBrushes
      CoreModules/World/Terrain/Tests
      CoreModules/World/Vegetation
      CoreModules/World/Wind
      CoreModules/World/WorldMap

- OpenSim.Region.OptionalModules: all those modules that are not core
  modules:

      OptionalModules/Avatar/Chat/IRC-stuff
      OptionalModules/Avatar/Concierge
      OptionalModules/Avatar/Voice/AsterixVoice
      OptionalModules/Avatar/Voice/SIPVoice
      OptionalModules/ContentManagementSystem
      OptionalModules/Grid/Interregion
      OptionalModules/Python
      OptionalModules/SvnSerialiser
      OptionalModules/World/NPC
      OptionalModules/World/TreePopulator

3 files changed, 693 insertions, 0 deletions

diff --git a/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneAssetService.cs b/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneAssetService.cs
new file mode 100644
index 0000000..13efe6b
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneAssetService.cs
@@ -0,0 +1,201 @@
+/**
+ * Copyright (c) 2008, Contributors. All rights reserved.
+ * 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 Organizations nor the names of Individual
+ *       Contributors may be used to endorse or promote products derived from
+ *       this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR 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.Net;
+using System.Reflection;
+
+using log4net;
+using Nini.Config;
+
+using OpenMetaverse;
+
+using OpenSim.Framework;
+using OpenSim.Framework.Communications;
+using OpenSim.Framework.Communications.Cache;
+using OpenSim.Framework.Servers;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Grid.AssetServer;
+using OpenSim.Data;
+
+namespace OpenSim.Region.CoreModules.Hypergrid
+{
+    public class HGStandaloneAssetService : IRegionModule
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static bool initialized = false;
+        private static bool enabled = false;
+
+        Scene m_scene;
+        //AssetService m_assetService;
+
+        #region IRegionModule interface
+
+        public void Initialise(Scene scene, IConfigSource config)
+        {
+            if (!initialized)
+            {
+                initialized = true;
+                m_scene = scene;
+
+                // This module is only on for standalones in hypergrid mode
+                enabled = !config.Configs["Startup"].GetBoolean("gridmode", true) && config.Configs["Startup"].GetBoolean("hypergrid", false);
+            }
+        }
+
+        public void PostInitialise()
+        {
+            if (enabled)
+            {
+                m_log.Info("[HGStandaloneAssetService]: Starting...");
+
+                //m_assetService = new AssetService(m_scene);
+                new AssetService(m_scene);
+            }
+        }
+
+        public void Close()
+        {
+        }
+
+        public string Name
+        {
+            get { return "HGStandaloneAssetService"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return true; }
+        }
+
+        #endregion
+
+    }
+
+    public class AssetService
+    {
+        private IUserService m_userService;
+        private bool m_doLookup = false;
+
+        public bool DoLookup
+        {
+            get { return m_doLookup; }
+            set { m_doLookup = value; }
+        }
+        private static readonly ILog m_log
+            = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        public AssetService(Scene m_scene)
+        {
+            AddHttpHandlers(m_scene);
+            m_userService = m_scene.CommsManager.UserService;
+        }
+
+        protected void AddHttpHandlers(Scene m_scene)
+        {
+            IAssetDataPlugin m_assetProvider = ((AssetServerBase)m_scene.AssetCache.AssetServer).AssetProviderPlugin;
+
+            BaseHttpServer httpServer = m_scene.CommsManager.HttpServer;
+            httpServer.AddStreamHandler(new GetAssetStreamHandler(m_assetProvider));
+            httpServer.AddStreamHandler(new PostAssetStreamHandler(m_assetProvider));
+
+        }
+
+        ///// <summary>
+        ///// Check that the source of an inventory request is one that we trust.
+        ///// </summary>
+        ///// <param name="peer"></param>
+        ///// <returns></returns>
+        //public bool CheckTrustSource(IPEndPoint peer)
+        //{
+        //    if (m_doLookup)
+        //    {
+        //        m_log.InfoFormat("[GRID AGENT INVENTORY]: Checking trusted source {0}", peer);
+        //        UriBuilder ub = new UriBuilder(m_userserver_url);
+        //        IPAddress[] uaddrs = Dns.GetHostAddresses(ub.Host);
+        //        foreach (IPAddress uaddr in uaddrs)
+        //        {
+        //            if (uaddr.Equals(peer.Address))
+        //            {
+        //                return true;
+        //            }
+        //        }
+
+        //        m_log.WarnFormat(
+        //            "[GRID AGENT INVENTORY]: Rejecting request since source {0} was not in the list of trusted sources",
+        //            peer);
+
+        //        return false;
+        //    }
+        //    else
+        //    {
+        //        return true;
+        //    }
+        //}
+
+        /// <summary>
+        /// Check that the source of an inventory request for a particular agent is a current session belonging to
+        /// that agent.
+        /// </summary>
+        /// <param name="session_id"></param>
+        /// <param name="avatar_id"></param>
+        /// <returns></returns>
+        public bool CheckAuthSession(string session_id, string avatar_id)
+        {
+            if (m_doLookup)
+            {
+                m_log.InfoFormat("[HGStandaloneInvService]: checking authed session {0} {1}", session_id, avatar_id);
+                UUID userID = UUID.Zero;
+                UUID sessionID = UUID.Zero;
+                UUID.TryParse(avatar_id, out userID);
+                UUID.TryParse(session_id, out sessionID);
+                if (userID.Equals(UUID.Zero) || sessionID.Equals(UUID.Zero))
+                {
+                    m_log.Info("[HGStandaloneInvService]: Invalid user or session id " + avatar_id + "; " + session_id);
+                    return false;
+                }
+                UserProfileData userProfile = m_userService.GetUserProfile(userID);
+                if (userProfile != null && userProfile.CurrentAgent != null &&
+                    userProfile.CurrentAgent.SessionID == sessionID)
+                {
+                    m_log.Info("[HGStandaloneInvService]: user is logged in and session is valid. Authorizing access.");
+                    return true;
+                }
+
+                m_log.Warn("[HGStandaloneInvService]: unknown user or session_id, request rejected");
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+        }
+    }
+}
diff --git a/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneInventoryService.cs b/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneInventoryService.cs
new file mode 100644
index 0000000..dfc859e
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Hypergrid/HGStandaloneInventoryService.cs
@@ -0,0 +1,314 @@
+/**
+ * Copyright (c) 2008, Contributors. All rights reserved.
+ * 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 Organizations nor the names of Individual
+ *       Contributors may be used to endorse or promote products derived from 
+ *       this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR 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.Net;
+using System.Reflection;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Communications;
+using OpenSim.Framework.Communications.Cache;
+using OpenSim.Framework.Servers;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.CoreModules.Hypergrid
+{
+    public class HGStandaloneInventoryService : IRegionModule
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static bool initialized = false;
+        private static bool enabled = false;
+        
+        Scene m_scene;
+        //InventoryService m_inventoryService;
+        
+        #region IRegionModule interface
+
+        public void Initialise(Scene scene, IConfigSource config)
+        {
+            if (!initialized)
+            {
+                initialized = true;
+                m_scene = scene;
+
+                // This module is only on for standalones
+                enabled = !config.Configs["Startup"].GetBoolean("gridmode", true) && config.Configs["Startup"].GetBoolean("hypergrid", false);
+            }
+        }
+
+        public void PostInitialise()
+        {
+            if (enabled)
+            {
+                m_log.Info("[HGStandaloneInvService]: Starting...");
+                //m_inventoryService = new InventoryService(m_scene);
+                new InventoryService(m_scene);
+            }
+        }
+
+        public void Close()
+        {
+        }
+
+        public string Name
+        {
+            get { return "HGStandaloneInventoryService"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return true; }
+        }
+
+        #endregion
+    }
+
+    public class InventoryService 
+    {
+        private static readonly ILog m_log
+            = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
+        private InventoryServiceBase m_inventoryService;
+        private IUserService m_userService;
+        private bool m_doLookup = false;
+
+        public bool DoLookup
+        {
+            get { return m_doLookup; }
+            set { m_doLookup = value; }
+        }
+
+        public InventoryService(Scene m_scene)
+        {
+            m_inventoryService = (InventoryServiceBase)m_scene.CommsManager.SecureInventoryService;
+            m_userService = m_scene.CommsManager.UserService;
+            AddHttpHandlers(m_scene);
+        }
+
+        protected void AddHttpHandlers(Scene m_scene)
+        {
+            BaseHttpServer httpServer = m_scene.CommsManager.HttpServer;
+            
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<Guid, InventoryCollection>(
+                    "POST", "/GetInventory/", GetUserInventory, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryFolderBase, bool>(
+                    "POST", "/NewFolder/", m_inventoryService.AddFolder, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryFolderBase, bool>(
+                    "POST", "/UpdateFolder/", m_inventoryService.UpdateFolder, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryFolderBase, bool>(
+                    "POST", "/MoveFolder/", m_inventoryService.MoveFolder, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryFolderBase, bool>(
+                    "POST", "/PurgeFolder/", m_inventoryService.PurgeFolder, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryItemBase, bool>(
+                    "POST", "/NewItem/", m_inventoryService.AddItem, CheckAuthSession));
+
+            httpServer.AddStreamHandler(
+                new RestDeserialiseSecureHandler<InventoryItemBase, bool>(
+                    "POST", "/DeleteItem/", m_inventoryService.DeleteItem, CheckAuthSession));
+
+            //// WARNING: Root folders no longer just delivers the root and immediate child folders (e.g
+            //// system folders such as Objects, Textures), but it now returns the entire inventory skeleton.
+            //// It would have been better to rename this request, but complexities in the BaseHttpServer
+            //// (e.g. any http request not found is automatically treated as an xmlrpc request) make it easier
+            //// to do this for now.
+            //m_scene.AddStreamHandler(
+            //    new RestDeserialiseTrustedHandler<Guid, List<InventoryFolderBase>>
+            //        ("POST", "/RootFolders/", GetInventorySkeleton, CheckTrustSource));
+
+            //// for persistent active gestures
+            //m_scene.AddStreamHandler(
+            //    new RestDeserialiseTrustedHandler<Guid, List<InventoryItemBase>>
+            //        ("POST", "/ActiveGestures/", GetActiveGestures, CheckTrustSource));
+        }
+
+
+        ///// <summary>
+        ///// Check that the source of an inventory request is one that we trust.
+        ///// </summary>
+        ///// <param name="peer"></param>
+        ///// <returns></returns>
+        //public bool CheckTrustSource(IPEndPoint peer)
+        //{
+        //    if (m_doLookup)
+        //    {
+        //        m_log.InfoFormat("[GRID AGENT INVENTORY]: Checking trusted source {0}", peer);
+        //        UriBuilder ub = new UriBuilder(m_userserver_url);
+        //        IPAddress[] uaddrs = Dns.GetHostAddresses(ub.Host);
+        //        foreach (IPAddress uaddr in uaddrs)
+        //        {
+        //            if (uaddr.Equals(peer.Address))
+        //            {
+        //                return true;
+        //            }
+        //        }
+
+        //        m_log.WarnFormat(
+        //            "[GRID AGENT INVENTORY]: Rejecting request since source {0} was not in the list of trusted sources",
+        //            peer);
+
+        //        return false;
+        //    }
+        //    else
+        //    {
+        //        return true;
+        //    }
+        //}
+
+        /// <summary>
+        /// Check that the source of an inventory request for a particular agent is a current session belonging to
+        /// that agent.
+        /// </summary>
+        /// <param name="session_id"></param>
+        /// <param name="avatar_id"></param>
+        /// <returns></returns>
+        public bool CheckAuthSession(string session_id, string avatar_id)
+        {
+            if (m_doLookup)
+            {
+                m_log.InfoFormat("[HGStandaloneInvService]: checking authed session {0} {1}", session_id, avatar_id);
+                UUID userID = UUID.Zero;
+                UUID sessionID = UUID.Zero;
+                UUID.TryParse(avatar_id, out userID);
+                UUID.TryParse(session_id, out sessionID);
+                if (userID.Equals(UUID.Zero) || sessionID.Equals(UUID.Zero))
+                {
+                    m_log.Info("[HGStandaloneInvService]: Invalid user or session id " + avatar_id + "; " + session_id);
+                    return false;
+                }
+                UserProfileData userProfile = m_userService.GetUserProfile(userID);
+                if (userProfile != null && userProfile.CurrentAgent != null &&
+                    userProfile.CurrentAgent.SessionID == sessionID)
+                {
+                    m_log.Info("[HGStandaloneInvService]: user is logged in and session is valid. Authorizing access.");
+                    return true;
+                }
+
+                m_log.Warn("[HGStandaloneInvService]: unknown user or session_id, request rejected");
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+        }
+
+
+        /// <summary>
+        /// Return a user's entire inventory
+        /// </summary>
+        /// <param name="rawUserID"></param>
+        /// <returns>The user's inventory.  If an inventory cannot be found then an empty collection is returned.</returns>
+        public InventoryCollection GetUserInventory(Guid rawUserID)
+        {
+            UUID userID = new UUID(rawUserID);
+
+            m_log.Info("[HGStandaloneInvService]: Processing request for inventory of " + userID);
+
+            // Uncomment me to simulate a slow responding inventory server
+            //Thread.Sleep(16000);
+
+            InventoryCollection invCollection = new InventoryCollection();
+
+            List<InventoryFolderBase> allFolders = ((InventoryServiceBase)m_inventoryService).GetInventorySkeleton(userID);
+
+            if (null == allFolders)
+            {
+                m_log.WarnFormat("[HGStandaloneInvService]: No inventory found for user {0}", rawUserID);
+
+                return invCollection;
+            }
+
+            List<InventoryItemBase> allItems = new List<InventoryItemBase>();
+
+            foreach (InventoryFolderBase folder in allFolders)
+            {
+                List<InventoryItemBase> items = ((InventoryServiceBase)m_inventoryService).RequestFolderItems(folder.ID);
+
+                if (items != null)
+                {
+                    allItems.InsertRange(0, items);
+                }
+            }
+
+            invCollection.UserID = userID;
+            invCollection.Folders = allFolders;
+            invCollection.Items = allItems;
+
+            //            foreach (InventoryFolderBase folder in invCollection.Folders)
+            //            {
+            //                m_log.DebugFormat("[GRID AGENT INVENTORY]: Sending back folder {0} {1}", folder.Name, folder.ID);
+            //            }
+            //
+            //            foreach (InventoryItemBase item in invCollection.Items)
+            //            {
+            //                m_log.DebugFormat("[GRID AGENT INVENTORY]: Sending back item {0} {1}, folder {2}", item.Name, item.ID, item.Folder);
+            //            }
+
+            m_log.InfoFormat(
+                "[HGStandaloneInvService]: Sending back inventory response to user {0} containing {1} folders and {2} items",
+                invCollection.UserID, invCollection.Folders.Count, invCollection.Items.Count);
+
+            return invCollection;
+        }
+
+        /// <summary>
+        /// Guid to UUID wrapper for same name IInventoryServices method
+        /// </summary>
+        /// <param name="rawUserID"></param>
+        /// <returns></returns>
+        public List<InventoryFolderBase> GetInventorySkeleton(Guid rawUserID)
+        {
+            UUID userID = new UUID(rawUserID);
+            return ((InventoryServiceBase)m_inventoryService).GetInventorySkeleton(userID);
+        }
+
+        public List<InventoryItemBase> GetActiveGestures(Guid rawUserID)
+        {
+            UUID userID = new UUID(rawUserID);
+
+            m_log.InfoFormat("[HGStandaloneInvService]: fetching active gestures for user {0}", userID);
+
+            return ((InventoryServiceBase)m_inventoryService).GetActiveGestures(userID);
+        }
+    }
+}
diff --git a/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs b/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs
new file mode 100644
index 0000000..5540cc3
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs
@@ -0,0 +1,178 @@
+/**
+ * Copyright (c) 2008, Contributors. All rights reserved.
+ * 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 Organizations nor the names of Individual
+ *       Contributors may be used to endorse or promote products derived from 
+ *       this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR 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;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Net;
+using System.Reflection;
+using System.Threading;
+using OpenMetaverse;
+using OpenMetaverse.Imaging;
+using OpenMetaverse.StructuredData;
+using log4net;
+using Nini.Config;
+using Nwc.XmlRpc;
+
+using OpenSim.Framework;
+using OpenSim.Framework.Communications.Cache;
+using OpenSim.Framework.Communications.Capabilities;
+using OpenSim.Framework.Servers;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Scenes.Types;
+using OpenSim.Region.CoreModules.World.WorldMap;
+using Caps = OpenSim.Framework.Communications.Capabilities.Caps;
+
+using OSD = OpenMetaverse.StructuredData.OSD;
+using OSDMap = OpenMetaverse.StructuredData.OSDMap;
+using OSDArray = OpenMetaverse.StructuredData.OSDArray;
+
+namespace OpenSim.Region.CoreModules.Hypergrid
+{
+    public class HGWorldMapModule : WorldMapModule, IRegionModule
+    {
+        private static readonly ILog m_log =
+            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        #region IRegionModule Members
+
+        public override void Initialise(Scene scene, IConfigSource config)
+        {
+            IConfig startupConfig = config.Configs["Startup"];
+            if (startupConfig.GetString("WorldMapModule", "WorldMap") == "HGWorldMap") 
+                m_Enabled = true;
+
+            if (!m_Enabled)
+                return;
+            m_log.Info("[HGMap] Initializing...");
+            m_scene = scene;
+        }
+
+
+        public override string Name
+        {
+            get { return "HGWorldMap"; }
+        }
+
+
+        #endregion
+
+        /// <summary>
+        /// Requests map blocks in area of minX, maxX, minY, MaxY in world cordinates
+        /// </summary>
+        /// <param name="minX"></param>
+        /// <param name="minY"></param>
+        /// <param name="maxX"></param>
+        /// <param name="maxY"></param>
+        public override void RequestMapBlocks(IClientAPI remoteClient, int minX, int minY, int maxX, int maxY, uint flag)
+        {
+            //
+            // WARNING!!! COPY & PASTE FROM SUPERCLASS
+            // The only difference is at the very end
+            //
+
+            m_log.Info("[HGMap]: Request map blocks " + minX + "-" + maxX + " " + minY + "-" + maxY);
+
+            //m_scene.ForEachScenePresence(delegate (ScenePresence sp) {
+            //    if (!sp.IsChildAgent && sp.UUID == remoteClient.AgentId)
+            //    {
+            //        Console.WriteLine("XXX Root agent");
+            //        DoRequestMapBlocks(remoteClient, minX, minY, maxX, maxY, flag);
+            //    }
+            //};
+
+            List<MapBlockData> mapBlocks;
+            if ((flag & 0x10000) != 0)  // user clicked on the map a tile that isn't visible
+            {
+                List<MapBlockData> response = new List<MapBlockData>();
+
+                // this should return one mapblock at most. But make sure: Look whether the one we requested is in there
+                mapBlocks = m_scene.SceneGridService.RequestNeighbourMapBlocks(minX, minY, maxX, maxY);
+                if (mapBlocks != null)
+                {
+                    foreach (MapBlockData block in mapBlocks)
+                    {
+                        if (block.X == minX && block.Y == minY)
+                        {
+                            // found it => add it to response
+                            response.Add(block);
+                            break;
+                        }
+                    }
+                }
+                response = mapBlocks;
+                if (response.Count == 0)
+                {
+                    // response still empty => couldn't find the map-tile the user clicked on => tell the client
+                    MapBlockData block = new MapBlockData();
+                    block.X = (ushort)minX;
+                    block.Y = (ushort)minY;
+                    block.Access = 254; // == not there
+                    response.Add(block);
+                }
+                remoteClient.SendMapBlock(response, 0);
+            }
+            else
+            {
+                // normal mapblock request. Use the provided values
+                mapBlocks = m_scene.SceneGridService.RequestNeighbourMapBlocks(minX - 4, minY - 4, maxX + 4, maxY + 4);
+
+                // Different from super
+                FillInMap(mapBlocks, minX, minY, maxX, maxY);
+                //
+
+                remoteClient.SendMapBlock(mapBlocks, flag);
+            }
+        }
+
+
+        private void FillInMap(List<MapBlockData> mapBlocks, int minX, int minY, int maxX, int maxY)
+        {
+            for (int x = minX; x <= maxX; x++)
+                for (int y = minY; y <= maxY; y++)
+                {
+                    MapBlockData mblock = mapBlocks.Find(delegate(MapBlockData mb) { return ((mb.X == x) && (mb.Y == y)); });
+                    if (mblock == null)
+                    {
+                        mblock = new MapBlockData();
+                        mblock.X = (ushort)x;
+                        mblock.Y = (ushort)y;
+                        mblock.Name = "";
+                        mblock.Access = 254; // not here???
+                        mblock.MapImageId = UUID.Zero;
+                        mapBlocks.Add(mblock);
+                    }
+                }
+        }
+    }    
+}