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, 319 insertions, 0 deletions

diff --git a/OpenSim/Region/OptionalModules/Grid/Interregion/IInterregionModule.cs b/OpenSim/Region/OptionalModules/Grid/Interregion/IInterregionModule.cs
new file mode 100644
index 0000000..a2c98a4
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/Grid/Interregion/IInterregionModule.cs
@@ -0,0 +1,43 @@
+/*
+ * 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 OpenSim 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 OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.CoreModules.Grid.Interregion
+{
+    public interface IInterregionModule
+    {
+        void RegisterMethod<T>(T e);
+        bool HasInterface<T>(Location loc);
+        T RequestInterface<T>(Location loc);
+        T[] RequestInterface<T>();
+        Location GetLocationByDirection(Scene scene, InterregionModule.Direction dir);
+        void internal_CreateRemotingObjects();
+        void RegisterRemoteRegion(string uri);
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/OptionalModules/Grid/Interregion/InterregionModule.cs b/OpenSim/Region/OptionalModules/Grid/Interregion/InterregionModule.cs
new file mode 100644
index 0000000..21df83c
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/Grid/Interregion/InterregionModule.cs
@@ -0,0 +1,199 @@
+/*
+ * 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 OpenSim 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.Runtime.Remoting;
+using System.Runtime.Remoting.Channels;
+using System.Runtime.Remoting.Channels.Tcp;
+using Nini.Config;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.CoreModules.Grid.Interregion
+{
+    public class InterregionModule : IInterregionModule, IRegionModule
+    {
+        #region Direction enum
+
+        public enum Direction
+        {
+            North,
+            NorthEast,
+            East,
+            SouthEast,
+            South,
+            SouthWest,
+            West,
+            NorthWest
+        }
+
+        #endregion
+
+        private readonly Dictionary<Type, Object> m_interfaces = new Dictionary<Type, object>();
+        private readonly Object m_lockObject = new object();
+        private readonly List<Location> m_myLocations = new List<Location>();
+
+        private readonly Dictionary<Location, string[]> m_neighbourInterfaces = new Dictionary<Location, string[]>();
+        private readonly Dictionary<Location, RemotingObject> m_neighbourRemote = new Dictionary<Location, RemotingObject>();
+        // private IConfigSource m_config;
+        private const bool m_enabled = false;
+
+        private RemotingObject m_myRemote;
+        private TcpChannel m_tcpChannel;
+        private int m_tcpPort = 10101;
+
+        #region IInterregionModule Members
+
+        public void internal_CreateRemotingObjects()
+        {
+            lock (m_lockObject)
+            {
+                if (m_tcpChannel == null)
+                {
+                    m_myRemote = new RemotingObject(m_interfaces, m_myLocations.ToArray());
+                    m_tcpChannel = new TcpChannel(m_tcpPort);
+
+                    ChannelServices.RegisterChannel(m_tcpChannel, false);
+                    RemotingServices.Marshal(m_myRemote, "OpenSimRemote2", typeof (RemotingObject));
+                }
+            }
+        }
+
+        public void RegisterMethod<T>(T e)
+        {
+            m_interfaces[typeof (T)] = e;
+        }
+
+        public bool HasInterface<T>(Location loc)
+        {
+            foreach (string val in m_neighbourInterfaces[loc])
+            {
+                if (val == typeof (T).FullName)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        public T RequestInterface<T>(Location loc)
+        {
+            if (m_neighbourRemote.ContainsKey(loc))
+            {
+                return m_neighbourRemote[loc].RequestInterface<T>();
+            }
+            throw new IndexOutOfRangeException("No neighbour availible at that location");
+        }
+
+        public T[] RequestInterface<T>()
+        {
+            List<T> m_t = new List<T>();
+            foreach (RemotingObject remote in m_neighbourRemote.Values)
+            {
+                try
+                {
+                    m_t.Add(remote.RequestInterface<T>());
+                }
+                catch (NotSupportedException)
+                {
+                }
+            }
+            return m_t.ToArray();
+        }
+
+        public Location GetLocationByDirection(Scene scene, Direction dir)
+        {
+            return new Location(0, 0);
+        }
+
+        public void RegisterRemoteRegion(string uri)
+        {
+            RegisterRemotingInterface((RemotingObject) Activator.GetObject(typeof (RemotingObject), uri));
+        }
+
+        #endregion
+
+        #region IRegionModule Members
+
+        public void Initialise(Scene scene, IConfigSource source)
+        {
+            m_myLocations.Add(new Location((int) scene.RegionInfo.RegionLocX,
+                                           (int) scene.RegionInfo.RegionLocY));
+            // m_config = source;
+
+            scene.RegisterModuleInterface<IInterregionModule>(this);
+        }
+
+        public void PostInitialise()
+        {
+            // Commenting out to remove 'unreachable code' warning since m_enabled is never true
+//            if (m_enabled)
+//            {
+//                try
+//                {
+//                    m_tcpPort = m_config.Configs["Comms"].GetInt("remoting_port", m_tcpPort);
+//                }
+//                catch
+//                {
+//                }
+//
+//                internal_CreateRemotingObjects();
+//            }
+        }
+
+        public void Close()
+        {
+            if (null != m_tcpChannel)
+                ChannelServices.UnregisterChannel(m_tcpChannel);
+        }
+
+        public string Name
+        {
+            get { return "InterregionModule"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return true; }
+        }
+
+        #endregion
+
+        private void RegisterRemotingInterface(RemotingObject remote)
+        {
+            Location[] locs = remote.GetLocations();
+            string[] interfaces = remote.GetInterfaces();
+            foreach (Location loc in locs)
+            {
+                m_neighbourInterfaces[loc] = interfaces;
+                m_neighbourRemote[loc] = remote;
+            }
+        }
+    }
+}
diff --git a/OpenSim/Region/OptionalModules/Grid/Interregion/RemotingObject.cs b/OpenSim/Region/OptionalModules/Grid/Interregion/RemotingObject.cs
new file mode 100644
index 0000000..b09c848
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/Grid/Interregion/RemotingObject.cs
@@ -0,0 +1,77 @@
+/*
+ * 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 OpenSim 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 OpenSim.Framework;
+
+namespace OpenSim.Region.CoreModules.Grid.Interregion
+{
+    public class RemotingObject : MarshalByRefObject
+    {
+        private readonly Location[] m_coords;
+        private readonly Dictionary<Type, Object> m_interfaces = new Dictionary<Type, object>();
+
+        public RemotingObject(Dictionary<Type, Object> myInterfaces, Location[] coords)
+        {
+            m_interfaces = myInterfaces;
+            m_coords = coords;
+        }
+
+        public Location[] GetLocations()
+        {
+            return (Location[]) m_coords.Clone();
+        }
+
+        public string[] GetInterfaces()
+        {
+            string[] interfaces = new string[m_interfaces.Count];
+            int i = 0;
+
+            foreach (KeyValuePair<Type, object> pair in m_interfaces)
+            {
+                interfaces[i++] = pair.Key.FullName;
+            }
+
+            return interfaces;
+        }
+
+        /// <summary>
+        /// Returns a registered interface availible to neighbouring regions.
+        /// </summary>
+        /// <typeparam name="T">The type of interface you wish to request</typeparam>
+        /// <returns>A MarshalByRefObject inherited from this region inheriting the interface requested.</returns>
+        /// <remarks>All registered interfaces <b>MUST</b> inherit from MarshalByRefObject and use only serialisable types.</remarks>
+        public T RequestInterface<T>()
+        {
+            if (m_interfaces.ContainsKey(typeof (T)))
+                return (T) m_interfaces[typeof (T)];
+
+            throw new NotSupportedException("No such interface registered.");
+        }
+    }
+}