9 files changed, 391 insertions, 126 deletions

diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 484159c..5de3f25 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -248,15 +248,16 @@ namespace OpenSim
                 {
                     string capitalizedTopic = char.ToUpper(topic[0]) + topic.Substring(1);
 
+                    // This is a hack to allow the user to enter the help command in upper or lowercase.  This will go
+                    // away at some point.
+                    m_console.Commands.AddCommand(capitalizedTopic, false, "help " + topic,
+                                                  "help " + capitalizedTopic,
+                                                  "Get help on plugin command '" + topic + "'",
+                                                  HandleCommanderHelp);
                     m_console.Commands.AddCommand(capitalizedTopic, false, "help " + capitalizedTopic,
                                                   "help " + capitalizedTopic,
                                                   "Get help on plugin command '" + topic + "'",
                                                   HandleCommanderHelp);
-//
-//                    m_console.Commands.AddCommand("General", false, topic,
-//                                                  topic,
-//                                                  "Execute subcommand for plugin '" + topic + "'",
-//                                                  null);
 
                     ICommander commander = null;
 
diff --git a/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/GenericSystemDrawing.cs b/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/GenericSystemDrawing.cs
index 21a9999..58925fd 100644
--- a/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/GenericSystemDrawing.cs
+++ b/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/GenericSystemDrawing.cs
@@ -132,13 +132,13 @@ namespace OpenSim.Region.CoreModules.World.Terrain.FileLoaders
         {
             // We need to do this because:
             // "Saving the image to the same file it was constructed from is not allowed and throws an exception."
-            string tempName = offsetX + "_ " + offsetY + "_" + filename;
+            string tempName = Path.GetTempFileName();
 
             Bitmap entireBitmap = null;
             Bitmap thisBitmap = null;
             if (File.Exists(filename))
             {
-                File.Copy(filename, tempName);
+                File.Copy(filename, tempName, true);
                 entireBitmap = new Bitmap(tempName);
                 if (entireBitmap.Width != fileWidth * regionSizeX || entireBitmap.Height != fileHeight * regionSizeY)
                 {
@@ -152,7 +152,7 @@ namespace OpenSim.Region.CoreModules.World.Terrain.FileLoaders
             }
 
             thisBitmap = CreateGrayscaleBitmapFromMap(m_channel);
-            Console.WriteLine("offsetX=" + offsetX + " offsetY=" + offsetY);
+//            Console.WriteLine("offsetX=" + offsetX + " offsetY=" + offsetY);
             for (int x = 0; x < regionSizeX; x++)
                 for (int y = 0; y < regionSizeY; y++)
                     entireBitmap.SetPixel(x + offsetX * regionSizeX, y + (fileHeight - 1 - offsetY) * regionSizeY, thisBitmap.GetPixel(x, y));
diff --git a/OpenSim/Region/CoreModules/World/Terrain/ITerrainLoader.cs b/OpenSim/Region/CoreModules/World/Terrain/ITerrainLoader.cs
index 7237f90..d407617 100644
--- a/OpenSim/Region/CoreModules/World/Terrain/ITerrainLoader.cs
+++ b/OpenSim/Region/CoreModules/World/Terrain/ITerrainLoader.cs
@@ -38,6 +38,21 @@ namespace OpenSim.Region.CoreModules.World.Terrain
         ITerrainChannel LoadStream(Stream stream);
         void SaveFile(string filename, ITerrainChannel map);
         void SaveStream(Stream stream, ITerrainChannel map);
+
+        /// <summary>
+        /// Save a number of map tiles to a single big image file.
+        /// </summary>
+        /// <remarks>
+        /// If the image file already exists then the tiles saved will replace those already in the file - other tiles
+        /// will be untouched.
+        /// </remarks>
+        /// <param name="filename">The terrain file to save</param>
+        /// <param name="offsetX">The map x co-ordinate at which to begin the save.</param>
+        /// <param name="offsetY">The may y co-ordinate at which to begin the save.</param>
+        /// <param name="fileWidth">The number of tiles to save along the X axis.</param>
+        /// <param name="fileHeight">The number of tiles to save along the Y axis.</param>
+        /// <param name="regionSizeX">The width of a map tile.</param>
+        /// <param name="regionSizeY">The height of a map tile.</param>
         void SaveFile(ITerrainChannel map, string filename, int offsetX, int offsetY, int fileWidth, int fileHeight, int regionSizeX, int regionSizeY);
     }
 }
\ No newline at end of file
diff --git a/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs b/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
index 9cd8f2b..17e9737 100644
--- a/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
+++ b/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
@@ -561,49 +561,56 @@ namespace OpenSim.Region.CoreModules.World.Terrain
         }
 
         /// <summary>
-        /// Saves the terrain to a larger terrain file.
+        /// Save a number of map tiles to a single big image file.
         /// </summary>
+        /// <remarks>
+        /// If the image file already exists then the tiles saved will replace those already in the file - other tiles
+        /// will be untouched.
+        /// </remarks>
         /// <param name="filename">The terrain file to save</param>
-        /// <param name="fileWidth">The width of the file in units</param>
-        /// <param name="fileHeight">The height of the file in units</param>
-        /// <param name="fileStartX">Where to begin our slice</param>
-        /// <param name="fileStartY">Where to begin our slice</param>
+        /// <param name="fileWidth">The number of tiles to save along the X axis.</param>
+        /// <param name="fileHeight">The number of tiles to save along the Y axis.</param>
+        /// <param name="fileStartX">The map x co-ordinate at which to begin the save.</param>
+        /// <param name="fileStartY">The may y co-ordinate at which to begin the save.</param>
         public void SaveToFile(string filename, int fileWidth, int fileHeight, int fileStartX, int fileStartY)
         {
             int offsetX = (int)m_scene.RegionInfo.RegionLocX - fileStartX;
             int offsetY = (int)m_scene.RegionInfo.RegionLocY - fileStartY;
 
-            if (offsetX >= 0 && offsetX < fileWidth && offsetY >= 0 && offsetY < fileHeight)
+            if (offsetX < 0 || offsetX >= fileWidth || offsetY < 0 || offsetY >= fileHeight)
             {
-                // this region is included in the tile request
-                foreach (KeyValuePair<string, ITerrainLoader> loader in m_loaders)
+                MainConsole.Instance.OutputFormat(
+                    "ERROR: file width + minimum X tile and file height + minimum Y tile must incorporate the current region at ({0},{1}).  File width {2} from {3} and file height {4} from {5} does not.",
+                    m_scene.RegionInfo.RegionLocX, m_scene.RegionInfo.RegionLocY, fileWidth, fileStartX, fileHeight, fileStartY);
+
+                return;
+            }
+
+            // this region is included in the tile request
+            foreach (KeyValuePair<string, ITerrainLoader> loader in m_loaders)
+            {
+                if (filename.EndsWith(loader.Key))
                 {
-                    if (filename.EndsWith(loader.Key))
+                    lock (m_scene)
                     {
-                        lock (m_scene)
-                        {
-                            loader.Value.SaveFile(m_channel, filename, offsetX, offsetY,
-                                                  fileWidth, fileHeight,
-                                                  (int)Constants.RegionSize,
-                                                  (int)Constants.RegionSize);
-
-                            m_log.InfoFormat("[TERRAIN]: Saved terrain from {0} to {1}", m_scene.RegionInfo.RegionName, filename);
-                        }
-                        
-                        return;
+                        loader.Value.SaveFile(m_channel, filename, offsetX, offsetY,
+                                              fileWidth, fileHeight,
+                                              (int)Constants.RegionSize,
+                                              (int)Constants.RegionSize);
+
+                        MainConsole.Instance.OutputFormat(
+                            "Saved terrain from ({0},{1}) to ({2},{3}) from {4} to {5}",
+                            fileStartX, fileStartY, fileStartX + fileWidth - 1, fileStartY + fileHeight - 1,
+                            m_scene.RegionInfo.RegionName, filename);
                     }
+                    
+                    return;
                 }
-
-                m_log.ErrorFormat(
-                    "[TERRAIN]: Could not save terrain from {0} to {1}.  Valid file extensions are {2}",
-                    m_scene.RegionInfo.RegionName, filename, m_supportedFileExtensions);
             }
-//            else
-//            {
-//                m_log.ErrorFormat(
-//                    "[TERRAIN]: Could not save terrain from {0} to {1}.  {2} {3} {4} {5} {6} {7}",
-//                    m_scene.RegionInfo.RegionName, filename, fileWidth, fileHeight, fileStartX, fileStartY, offsetX, offsetY);
-//            }
+
+            MainConsole.Instance.OutputFormat(
+                "ERROR: Could not save terrain from {0} to {1}.  Valid file extensions are {2}",
+                m_scene.RegionInfo.RegionName, filename, m_supportedFileExtensions);
         }
 
         /// <summary>
@@ -1192,6 +1199,12 @@ namespace OpenSim.Region.CoreModules.World.Terrain
                                             "Integer");
             saveToTileCommand.AddArgument("minimum Y tile", "The Y region coordinate of the first section on the file",
                                             "Integer");
+            saveToTileCommand.AddArgument("minimum Y tile", "The Y region coordinate of the first tile on the file\n"
+                                          + "= Example =\n"
+                                          + "To save a PNG file for a set of map tiles 2 regions wide and 3 regions high from map co-ordinate (9910,10234)\n"
+                                          + "        # terrain save-tile ST06.png 2 3 9910 10234\n",
+                                          "Integer");
+
             // Terrain adjustments
             Command fillRegionCommand =
                 new Command("fill", CommandIntentions.COMMAND_HAZARDOUS, InterfaceFillTerrain, "Fills the current heightmap with a specified value.");
diff --git a/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs b/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
index bb4c788..34a4bfc 100644
--- a/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
+++ b/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
@@ -26,12 +26,12 @@
  */
 
 using System;
+using System.Reflection;
 using OpenMetaverse;
 
 namespace OpenSim.Region.Framework.Interfaces
 {
     public delegate void ScriptCommand(UUID script, string id, string module, string command, string k);
-    public delegate object ScriptInvocation(UUID script, object[] parms);
 
     /// <summary>
     /// Interface for communication between OpenSim modules and in-world scripts
@@ -46,14 +46,15 @@ namespace OpenSim.Region.Framework.Interfaces
         /// </summary>
         event ScriptCommand OnScriptCommand;
 
-        void RegisterScriptInvocation(string name, ScriptInvocation fn, Type[] csig, Type rsig);
+        void RegisterScriptInvocation(object target, string method);
+        Delegate[] GetScriptInvocationList();
 
-        ScriptInvocation LookupScriptInvocation(string fname);
+        Delegate LookupScriptInvocation(string fname);
         string LookupModInvocation(string fname);
         Type[] LookupTypeSignature(string fname);
         Type LookupReturnType(string fname);
 
-        object InvokeOperation(UUID scriptId, string fname, params object[] parms);
+        object InvokeOperation(UUID hostId, UUID scriptId, string fname, params object[] parms);
 
         /// <summary>
         /// Send a link_message event to an in-world script
diff --git a/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs b/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
index a90362e..0605590 100644
--- a/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
@@ -35,6 +35,8 @@ using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 using Mono.Addins;
 using OpenMetaverse;
+using System.Linq;
+using System.Linq.Expressions;
 
 namespace OpenSim.Region.CoreModules.Scripting.ScriptModuleComms
 {
@@ -47,15 +49,15 @@ namespace OpenSim.Region.CoreModules.Scripting.ScriptModuleComms
 #region ScriptInvocation
         protected class ScriptInvocationData
         {
-            public ScriptInvocation ScriptInvocationFn { get; private set; }
+            public Delegate ScriptInvocationDelegate { get; private set; }
             public string FunctionName { get; private set; }
             public Type[] TypeSignature { get; private set; }
             public Type ReturnType { get; private set; }
 
-            public ScriptInvocationData(string fname, ScriptInvocation fn, Type[] callsig, Type returnsig)
+            public ScriptInvocationData(string fname, Delegate fn, Type[] callsig, Type returnsig)
             {
                 FunctionName = fname;
-                ScriptInvocationFn = fn;
+                ScriptInvocationDelegate = fn;
                 TypeSignature = callsig;
                 ReturnType = returnsig;
             }
@@ -126,14 +128,62 @@ namespace OpenSim.Region.CoreModules.Scripting.ScriptModuleComms
             m_scriptModule.PostScriptEvent(script, "link_message", args);
         }
 
-        public void RegisterScriptInvocation(string fname, ScriptInvocation fcall, Type[] csig, Type rsig)
+        public void RegisterScriptInvocation(object target, string meth)
         {
+            m_log.DebugFormat("[MODULE COMMANDS] Register method {0} from type {1}",meth,target.GetType().Name);
+            
+
+            MethodInfo mi = target.GetType().GetMethod(meth,
+                    BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
+            if (mi == null)
+            {
+                m_log.WarnFormat("[MODULE COMMANDS] Failed to register method {0}",meth);
+                return;
+            }
+            
+            Type delegateType;
+            var typeArgs = mi.GetParameters()
+                    .Select(p => p.ParameterType)
+                    .ToList();
+
+            if (mi.ReturnType == typeof(void))
+            {
+                    delegateType = Expression.GetActionType(typeArgs.ToArray());
+            }
+            else
+            {
+                    typeArgs.Add(mi.ReturnType);
+                    delegateType = Expression.GetFuncType(typeArgs.ToArray());
+            }
+
+            Delegate fcall = Delegate.CreateDelegate(delegateType, target, mi);
+
             lock (m_scriptInvocation)
             {
-                m_scriptInvocation[fname] = new ScriptInvocationData(fname,fcall,csig,rsig);
+                ParameterInfo[] parameters = fcall.Method.GetParameters ();
+                if (parameters.Length < 2) // Must have two UUID params
+                    return;
+
+                // Hide the first two parameters
+                Type[] parmTypes = new Type[parameters.Length - 2];
+                for (int i = 2 ; i < parameters.Length ; i++)
+                    parmTypes[i - 2] = parameters[i].ParameterType;
+                m_scriptInvocation[fcall.Method.Name] = new ScriptInvocationData(fcall.Method.Name, fcall, parmTypes, fcall.Method.ReturnType);
             }
         }
         
+        public Delegate[] GetScriptInvocationList()
+        {
+            List<Delegate> ret = new List<Delegate>();
+
+            lock (m_scriptInvocation)
+            {
+                foreach (ScriptInvocationData d in m_scriptInvocation.Values)
+                    ret.Add(d.ScriptInvocationDelegate);
+            }
+            return ret.ToArray();
+        }
+
         public string LookupModInvocation(string fname)
         {
             lock (m_scriptInvocation)
@@ -147,19 +197,29 @@ namespace OpenSim.Region.CoreModules.Scripting.ScriptModuleComms
                         return "modInvokeI";
                     else if (sid.ReturnType == typeof(float))
                         return "modInvokeF";
+                    else if (sid.ReturnType == typeof(UUID))
+                        return "modInvokeK";
+                    else if (sid.ReturnType == typeof(OpenMetaverse.Vector3))
+                        return "modInvokeV";
+                    else if (sid.ReturnType == typeof(OpenMetaverse.Quaternion))
+                        return "modInvokeR";
+                    else if (sid.ReturnType == typeof(object[]))
+                        return "modInvokeL";
+
+                    m_log.WarnFormat("[MODULE COMMANDS] failed to find match for {0} with return type {1}",fname,sid.ReturnType.Name);
                 }
             }
 
             return null;
         }
 
-        public ScriptInvocation LookupScriptInvocation(string fname)
+        public Delegate LookupScriptInvocation(string fname)
         {
             lock (m_scriptInvocation)
             {
                 ScriptInvocationData sid;
                 if (m_scriptInvocation.TryGetValue(fname,out sid))
-                    return sid.ScriptInvocationFn;
+                    return sid.ScriptInvocationDelegate;
             }
 
             return null;
@@ -189,10 +249,15 @@ namespace OpenSim.Region.CoreModules.Scripting.ScriptModuleComms
             return null;
         }
 
-        public object InvokeOperation(UUID scriptid, string fname, params object[] parms)
+        public object InvokeOperation(UUID hostid, UUID scriptid, string fname, params object[] parms)
         {
-            ScriptInvocation fn = LookupScriptInvocation(fname);
-            return fn(scriptid,parms);
+            List<object> olist = new List<object>();
+            olist.Add(hostid);
+            olist.Add(scriptid);
+            foreach (object o in parms)
+                olist.Add(o);
+            Delegate fn = LookupScriptInvocation(fname);
+            return fn.DynamicInvoke(olist.ToArray());
         }
 #endregion
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
index 2942104..7c07e15 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
@@ -120,33 +120,110 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         /// 
         /// </summary>
         /// <param name="fname">The name of the function to invoke</param>
-        /// <param name="fname">List of parameters</param>
+        /// <param name="parms">List of parameters</param>
         /// <returns>string result of the invocation</returns>
-        public string modInvokeS(string fname, params object[] parms)
+        public void modInvokeN(string fname, params object[] parms)
         {
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(string))
                 MODError(String.Format("return type mismatch for {0}",fname));
 
-            return (string)modInvoke(fname,parms);
+            modInvoke(fname,parms);
         }
 
-        public int modInvokeI(string fname, params object[] parms)
+        public LSL_String modInvokeS(string fname, params object[] parms)
+        {
+            Type returntype = m_comms.LookupReturnType(fname);
+            if (returntype != typeof(string))
+                MODError(String.Format("return type mismatch for {0}",fname));
+
+            string result = (string)modInvoke(fname,parms);
+            return new LSL_String(result);
+        }
+
+        public LSL_Integer modInvokeI(string fname, params object[] parms)
         {
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(int))
                 MODError(String.Format("return type mismatch for {0}",fname));
 
-            return (int)modInvoke(fname,parms);
+            int result = (int)modInvoke(fname,parms);
+            return new LSL_Integer(result);
         }
         
-        public float modInvokeF(string fname, params object[] parms)
+        public LSL_Float modInvokeF(string fname, params object[] parms)
         {
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(float))
                 MODError(String.Format("return type mismatch for {0}",fname));
 
-            return (float)modInvoke(fname,parms);
+            float result = (float)modInvoke(fname,parms);
+            return new LSL_Float(result);
+        }
+
+        public LSL_Key modInvokeK(string fname, params object[] parms)
+        {
+            Type returntype = m_comms.LookupReturnType(fname);
+            if (returntype != typeof(UUID))
+                MODError(String.Format("return type mismatch for {0}",fname));
+
+            UUID result = (UUID)modInvoke(fname,parms);
+            return new LSL_Key(result.ToString());
+        }
+
+        public LSL_Vector modInvokeV(string fname, params object[] parms)
+        {
+            Type returntype = m_comms.LookupReturnType(fname);
+            if (returntype != typeof(OpenMetaverse.Vector3))
+                MODError(String.Format("return type mismatch for {0}",fname));
+
+            OpenMetaverse.Vector3 result = (OpenMetaverse.Vector3)modInvoke(fname,parms);
+            return new LSL_Vector(result.X,result.Y,result.Z);
+        }
+
+        public LSL_Rotation modInvokeR(string fname, params object[] parms)
+        {
+            Type returntype = m_comms.LookupReturnType(fname);
+            if (returntype != typeof(OpenMetaverse.Quaternion))
+                MODError(String.Format("return type mismatch for {0}",fname));
+
+            OpenMetaverse.Quaternion result = (OpenMetaverse.Quaternion)modInvoke(fname,parms);
+            return new LSL_Rotation(result.X,result.Y,result.Z,result.W);
+        }
+
+        public LSL_List modInvokeL(string fname, params object[] parms)
+        {
+            Type returntype = m_comms.LookupReturnType(fname);
+            if (returntype != typeof(object[]))
+                MODError(String.Format("return type mismatch for {0}",fname));
+
+            object[] result = (object[])modInvoke(fname,parms);
+            object[] llist = new object[result.Length];
+            for (int i = 0; i < result.Length; i++)
+            {
+                if (result[i] is string)
+                    llist[i] = new LSL_String((string)result[i]);
+                else if (result[i] is int)
+                    llist[i] = new LSL_Integer((int)result[i]);
+                else if (result[i] is float)
+                    llist[i] = new LSL_Float((float)result[i]);
+                else if (result[i] is OpenMetaverse.Vector3)
+                {
+                    OpenMetaverse.Vector3 vresult = (OpenMetaverse.Vector3)result[i];
+                    llist[i] = new LSL_Vector(vresult.X,vresult.Y,vresult.Z);
+                }
+                else if (result[i] is OpenMetaverse.Quaternion)
+                {
+                    OpenMetaverse.Quaternion qresult = (OpenMetaverse.Quaternion)result[i];
+                    llist[i] = new LSL_Rotation(qresult.X,qresult.Y,qresult.Z,qresult.W);
+                }
+                else
+                {
+                    MODError(String.Format("unknown list element returned by {0}",fname));
+                }
+            }
+
+            return new LSL_List(llist);
         }
 
         /// <summary>
@@ -168,63 +245,30 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 MODError(String.Format("wrong number of parameters to function {0}",fname));
             
             object[] convertedParms = new object[parms.Length];
-
             for (int i = 0; i < parms.Length; i++)
-            {
-                if (parms[i] is LSL_String)
-                {
-                    if (signature[i] != typeof(string))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
+                convertedParms[i] = ConvertFromLSL(parms[i],signature[i]);
 
-                    convertedParms[i] = (string)(LSL_String)parms[i];
-                }
-                else if (parms[i] is LSL_Integer)
-                {
-                    if (signature[i] != typeof(int))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
-
-                    convertedParms[i] = (int)(LSL_Integer)parms[i];
-                }
-                else if (parms[i] is LSL_Float)
-                {
-                    if (signature[i] != typeof(float))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
-
-                    convertedParms[i] = (float)(LSL_Float)parms[i];
-                }
-                else if (parms[i] is LSL_Key)
-                {
-                    if (signature[i] != typeof(string))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
-
-                    convertedParms[i] =  (string)(LSL_Key)parms[i];
-                }
-                else if (parms[i] is LSL_Rotation)
-                {
-                    if (signature[i] != typeof(string))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
-
-                    convertedParms[i] =  (string)(LSL_Rotation)parms[i];
-                }
-                else if (parms[i] is LSL_Vector)
-                {
-                    if (signature[i] != typeof(string))
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
-
-                    convertedParms[i] =  (string)(LSL_Vector)parms[i];
-                }
-                else
-                {
-                    if (signature[i] != parms[i].GetType())
-                        MODError(String.Format("parameter type mismatch in {0}; expecting {1}",fname,signature[i].Name));
+            // now call the function, the contract with the function is that it will always return
+            // non-null but don't trust it completely
+            try 
+            {
+                object result = m_comms.InvokeOperation(m_host.UUID, m_itemID, fname, convertedParms);
+                if (result != null)
+                    return result;
 
-                    convertedParms[i] = parms[i];
-                }
+                MODError(String.Format("Invocation of {0} failed; null return value",fname));
+            }
+            catch (Exception e)
+            {
+                MODError(String.Format("Invocation of {0} failed; {1}",fname,e.Message));
             }
 
-            return m_comms.InvokeOperation(m_itemID,fname,convertedParms);
+            return null;
         }
         
+        /// <summary>
+        /// Send a command to functions registered on an event
+        /// </summary>
         public string modSendCommand(string module, string command, string k)
         {
             if (!m_MODFunctionsEnabled)
@@ -239,5 +283,101 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
             return req.ToString();
         }
+
+        /// <summary>
+        /// </summary>
+        protected object ConvertFromLSL(object lslparm, Type type)
+        {
+            // ---------- String ----------
+            if (lslparm is LSL_String)
+            {
+                if (type == typeof(string))
+                    return (string)(LSL_String)lslparm;
+
+                // Need to check for UUID since keys are often treated as strings
+                if (type == typeof(UUID))
+                    return new UUID((string)(LSL_String)lslparm);
+            }
+
+            // ---------- Integer ----------
+            else if (lslparm is LSL_Integer)
+            {
+                if (type == typeof(int))
+                    return (int)(LSL_Integer)lslparm;
+            }
+
+            // ---------- Float ----------
+            else if (lslparm is LSL_Float)
+            {
+                if (type == typeof(float))
+                    return (float)(LSL_Float)lslparm;
+            }
+
+            // ---------- Key ----------
+            else if (lslparm is LSL_Key)
+            {
+                if (type == typeof(UUID))
+                    return new UUID((LSL_Key)lslparm);
+            }
+
+            // ---------- Rotation ----------
+            else if (lslparm is LSL_Rotation)
+            {
+                if (type == typeof(OpenMetaverse.Quaternion))
+                {
+                    LSL_Rotation rot = (LSL_Rotation)lslparm;
+                    return new OpenMetaverse.Quaternion((float)rot.x,(float)rot.y,(float)rot.z,(float)rot.s);
+                }
+            }
+
+            // ---------- Vector ----------
+            else if (lslparm is LSL_Vector)
+            {
+                if (type == typeof(OpenMetaverse.Vector3))
+                {
+                    LSL_Vector vect = (LSL_Vector)lslparm;
+                    return new OpenMetaverse.Vector3((float)vect.x,(float)vect.y,(float)vect.z);
+                }
+            }
+
+            // ---------- List ----------
+            else if (lslparm is LSL_List)
+            {
+                if (type == typeof(object[]))
+                {
+                    object[] plist = (lslparm as LSL_List).Data;
+                    object[] result = new object[plist.Length];
+                    for (int i = 0; i < plist.Length; i++)
+                    {
+                        if (plist[i] is LSL_String)
+                            result[i] = (string)(LSL_String)plist[i];                            
+                        else if (plist[i] is LSL_Integer)
+                            result[i] = (int)(LSL_Integer)plist[i];
+                        else if (plist[i] is LSL_Float)
+                            result[i] = (float)(LSL_Float)plist[i];
+                        else if (plist[i] is LSL_Key)
+                            result[i] = new UUID((LSL_Key)plist[i]);
+                        else if (plist[i] is LSL_Rotation)
+                        {
+                            LSL_Rotation rot = (LSL_Rotation)plist[i];
+                            result[i] = new OpenMetaverse.Quaternion((float)rot.x,(float)rot.y,(float)rot.z,(float)rot.s);
+                        }
+                        else if (plist[i] is LSL_Vector)
+                        {
+                            LSL_Vector vect = (LSL_Vector)plist[i];
+                            result[i] = new OpenMetaverse.Vector3((float)vect.x,(float)vect.y,(float)vect.z);
+                        }
+                        else
+                            MODError("unknown LSL list element type");
+                    }
+
+                    return result;
+                }
+            }
+            
+            MODError(String.Format("parameter type mismatch; expecting {0}",type.Name));
+            return null;
+        }
+
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IMOD_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IMOD_Api.cs
index 756a59f..aa78aaa 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IMOD_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IMOD_Api.cs
@@ -28,26 +28,27 @@
 using System.Collections;
 using OpenSim.Region.ScriptEngine.Interfaces;
 
-using key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
-using rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
-using vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
+using LSL_Float = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLFloat;
+using LSL_Integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
+using LSL_Key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
 using LSL_List = OpenSim.Region.ScriptEngine.Shared.LSL_Types.list;
+using LSL_Rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
 using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
-using LSL_Integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
-using LSL_Float = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLFloat;
+using LSL_Vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
 
 namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
 {
     public interface IMOD_Api
     {
         // Invocation functions
-        string modInvokeS(string fname, params object[] parms);
-        int modInvokeI(string fname, params object[] parms);
-        float modInvokeF(string fname, params object[] parms);
-        // vector modInvokeV(string fname, params object[] parms);
-        // rotation modInvokeV(string fname, params object[] parms);
-        // key modInvokeK(string fname, params object[] parms);
-        // list modInvokeL(string fname, params object[] parms);
+        void modInvokeN(string fname, params object[] parms);
+        LSL_String modInvokeS(string fname, params object[] parms);
+        LSL_Integer modInvokeI(string fname, params object[] parms);
+        LSL_Float modInvokeF(string fname, params object[] parms);
+        LSL_Key modInvokeK(string fname, params object[] parms);
+        LSL_Vector modInvokeV(string fname, params object[] parms);
+        LSL_Rotation modInvokeR(string fname, params object[] parms);
+        LSL_List modInvokeL(string fname, params object[] parms);
         
         //Module functions
         string modSendCommand(string modules, string command, string k);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/MOD_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/MOD_Stub.cs
index 04b7f14..1c47138 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/MOD_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/MOD_Stub.cs
@@ -39,10 +39,14 @@ using integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
 using vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
 using rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
 using key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
-using LSL_List = OpenSim.Region.ScriptEngine.Shared.LSL_Types.list;
-using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
+
 using LSL_Float = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLFloat;
 using LSL_Integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
+using LSL_Key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
+using LSL_List = OpenSim.Region.ScriptEngine.Shared.LSL_Types.list;
+using LSL_Rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
+using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
+using LSL_Vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
 
 namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
 {
@@ -58,21 +62,46 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
             m_MOD_Functions = (IMOD_Api)api;
         }
 
-        public string modInvokeS(string fname, params object[] parms)
+        public void modInvokeN(string fname, params object[] parms)
+        {
+            m_MOD_Functions.modInvokeN(fname, parms);
+        }
+
+        public LSL_String modInvokeS(string fname, params object[] parms)
         {
             return m_MOD_Functions.modInvokeS(fname, parms);
         }
 
-        public int modInvokeI(string fname, params object[] parms)
+        public LSL_Integer modInvokeI(string fname, params object[] parms)
         {
             return m_MOD_Functions.modInvokeI(fname, parms);
         }
 
-        public float modInvokeF(string fname, params object[] parms)
+        public LSL_Float modInvokeF(string fname, params object[] parms)
         {
             return m_MOD_Functions.modInvokeF(fname, parms);
         }
 
+        public LSL_Key modInvokeK(string fname, params object[] parms)
+        {
+            return m_MOD_Functions.modInvokeK(fname, parms);
+        }
+
+        public LSL_Vector modInvokeV(string fname, params object[] parms)
+        {
+            return m_MOD_Functions.modInvokeV(fname, parms);
+        }
+
+        public LSL_Rotation modInvokeR(string fname, params object[] parms)
+        {
+            return m_MOD_Functions.modInvokeR(fname, parms);
+        }
+
+        public LSL_List modInvokeL(string fname, params object[] parms)
+        {
+            return m_MOD_Functions.modInvokeL(fname, parms);
+        }
+
         public string modSendCommand(string module, string command, string k)
         {
             return m_MOD_Functions.modSendCommand(module, command, k);