/*
 * 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;
using System.Collections.Generic;
using System.Runtime.Remoting.Lifetime;
using System.Text;
using System.Threading;
using Nini.Config;
using Axiom.Math;
using libsecondlife;
using libsecondlife.Packets;
using OpenSim;
using OpenSim.Framework;
using OpenSim.Framework.Communications.Cache;
using OpenSim.Region.Environment;
using OpenSim.Region.Interfaces;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Modules.Avatar.Currency.SampleMoney;
using OpenSim.Region.Environment.Modules.World.Land;
using OpenSim.Region.Environment.Scenes;
using OpenSim.Region.Physics.Manager;
using OpenSim.Region.ScriptEngine.Shared;
using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
using OpenSim.Region.ScriptEngine.Interfaces;
using OpenSim.Region.ScriptEngine.Shared.Api.Interfaces;

namespace OpenSim.Region.ScriptEngine.Shared.Api
{
    /// <summary>
    /// Contains all LSL ll-functions. This class will be in Default AppDomain.
    /// </summary>
    public class LSL_Api : MarshalByRefObject, ILSL_Api, IScriptApi
    {
        // private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        internal IScriptEngine m_ScriptEngine;
        internal SceneObjectPart m_host;
        internal uint m_localID;
        internal LLUUID m_itemID;
        internal bool throwErrorOnNotImplemented = true;
        internal AsyncCommandManager AsyncCommands = null;

        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, uint localID, LLUUID itemID)
        {
            m_ScriptEngine = ScriptEngine;
            m_host = host;
            m_localID = localID;
            m_itemID = itemID;

            AsyncCommands = (AsyncCommandManager)ScriptEngine.AsyncCommands;
        }

        private DateTime m_timer = DateTime.Now;
        private bool m_waitingForScriptAnswer=false;


        // Object never expires
        public override Object InitializeLifetimeService()
        {
            ILease lease = (ILease)base.InitializeLifetimeService();

            if (lease.CurrentState == LeaseState.Initial)
            {
                lease.InitialLeaseTime = TimeSpan.Zero;
            }
            return lease;
        }

        public Scene World
        {
            get { return m_ScriptEngine.World; }
        }

        public void state(string newState)
        {
            m_ScriptEngine.SetState(m_itemID, newState);
            throw new EventAbortException();
        }

        public void llSay(int channelID, string text)
        {
            m_host.AddScriptLPS(1);

            if (text.Length > 1023)
                text = text.Substring(0, 1023);

            World.SimChat(Helpers.StringToField(text),
                          ChatTypeEnum.Say, channelID, m_host.AbsolutePosition, m_host.Name, m_host.UUID, false);

            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.DeliverMessage(ChatTypeEnum.Say, channelID, m_host.Name, m_host.UUID, text);
        }

        // Extension commands use this:
        public ICommander GetCommander(string name)
        {
            return World.GetCommander(name);
        }

        private LLUUID InventorySelf()
        {
            LLUUID invItemID = new LLUUID();

            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Type == 10 && inv.Value.ItemID == m_itemID)
                {
                    invItemID = inv.Key;
                    break;
                }
            }

            return invItemID;
        }

        private LLUUID InventoryKey(string name, int type)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == name)
                {
                    if (inv.Value.Type != type)
                        return LLUUID.Zero;

                    return inv.Value.AssetID.ToString();
                }
            }
            return LLUUID.Zero;
        }

        private LLUUID InventoryKey(string name)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == name)
                {
                    return inv.Value.AssetID.ToString();
                }
            }
            return LLUUID.Zero;
        }


        /// <summary>
        /// accepts a valid LLUUID, -or- a name of an inventory item.
        /// Returns a valid LLUUID or LLUUID.Zero if key invalid and item not found
        /// in prim inventory.
        /// </summary>
        /// <param name="k"></param>
        /// <returns></returns>
        private LLUUID KeyOrName(string k)
        {
            LLUUID key = LLUUID.Zero;

            // if we can parse the string as a key, use it.
            if (LLUUID.TryParse(k, out key))
            {
                return key;
            }
            // else try to locate the name in inventory of object. found returns key,
            // not found returns LLUUID.Zero which will translate to the default particle texture
            else
            {
                return InventoryKey(k);
            }
        }

        public void osSetRegionWaterHeight(double height)
        {
            m_host.AddScriptLPS(1);
            //Check to make sure that the script's owner is the estate manager/master
            //World.Permissions.GenericEstatePermission(
            if (World.ExternalChecks.ExternalChecksCanBeGodLike(m_host.OwnerID))
            {
                World.EventManager.TriggerRequestChangeWaterHeight((float)height);
            }
        }

        //These are the implementations of the various ll-functions used by the LSL scripts.
        //starting out, we use the System.Math library for trig functions. - ckrinke 8-14-07
        public double llSin(double f)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Sin(f);
        }

        public double llCos(double f)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Cos(f);
        }

        public double llTan(double f)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Tan(f);
        }

        public double llAtan2(double x, double y)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Atan2(y, x);
        }

        public double llSqrt(double f)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Sqrt(f);
        }

        public double llPow(double fbase, double fexponent)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Pow(fbase, fexponent);
        }

        public LSL_Types.LSLInteger llAbs(int i)
        {
            m_host.AddScriptLPS(1);
            return (int)Math.Abs(i);
        }

        public double llFabs(double f)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Abs(f);
        }

        public double llFrand(double mag)
        {
            m_host.AddScriptLPS(1);
            lock (Util.RandomClass)
            {
                return Util.RandomClass.NextDouble() * mag;
            }
        }

        public LSL_Types.LSLInteger llFloor(double f)
        {
            m_host.AddScriptLPS(1);
            return (int)Math.Floor(f);
        }

        public LSL_Types.LSLInteger llCeil(double f)
        {
            m_host.AddScriptLPS(1);
            return (int)Math.Ceiling(f);
        }

        // Xantor 01/May/2008 fixed midpointrounding (2.5 becomes 3.0 instead of 2.0, default = ToEven)
        public LSL_Types.LSLInteger llRound(double f)
        {
            m_host.AddScriptLPS(1);
            return (int)Math.Round(f, MidpointRounding.AwayFromZero);
        }

        //This next group are vector operations involving squaring and square root. ckrinke
        public double llVecMag(LSL_Types.Vector3 v)
        {
            m_host.AddScriptLPS(1);
            return LSL_Types.Vector3.Mag(v);
        }

        public LSL_Types.Vector3 llVecNorm(LSL_Types.Vector3 v)
        {
            m_host.AddScriptLPS(1);
            double mag = LSL_Types.Vector3.Mag(v);
            LSL_Types.Vector3 nor = new LSL_Types.Vector3();
            nor.x = v.x / mag;
            nor.y = v.y / mag;
            nor.z = v.z / mag;
            return nor;
        }

        public double llVecDist(LSL_Types.Vector3 a, LSL_Types.Vector3 b)
        {
            m_host.AddScriptLPS(1);
            double dx = a.x - b.x;
            double dy = a.y - b.y;
            double dz = a.z - b.z;
            return Math.Sqrt(dx * dx + dy * dy + dz * dz);
        }

        //Now we start getting into quaternions which means sin/cos, matrices and vectors. ckrinke

        // Utility function for llRot2Euler

        // normalize an angle between 0 - 2*PI (0 and 360 degrees)
        private double NormalizeAngle(double angle)
        {
            angle = angle % (Math.PI * 2);
            if (angle < 0) angle = angle + Math.PI * 2;
            return angle;
        }

        // Old implementation of llRot2Euler, now normalized

        public LSL_Types.Vector3 llRot2Euler(LSL_Types.Quaternion r)
        {
            m_host.AddScriptLPS(1);
            //This implementation is from http://lslwiki.net/lslwiki/wakka.php?wakka=LibraryRotationFunctions. ckrinke
            LSL_Types.Quaternion t = new LSL_Types.Quaternion(r.x * r.x, r.y * r.y, r.z * r.z, r.s * r.s);
            double m = (t.x + t.y + t.z + t.s);
            if (m == 0) return new LSL_Types.Vector3();
            double n = 2 * (r.y * r.s + r.x * r.z);
            double p = m * m - n * n;
            if (p > 0)
                return new LSL_Types.Vector3(NormalizeAngle(Math.Atan2(2.0 * (r.x * r.s - r.y * r.z), (-t.x - t.y + t.z + t.s))),
                                             NormalizeAngle(Math.Atan2(n, Math.Sqrt(p))),
                                             NormalizeAngle(Math.Atan2(2.0 * (r.z * r.s - r.x * r.y), (t.x - t.y - t.z + t.s))));
            else if (n > 0)
                return new LSL_Types.Vector3(0.0, Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
            else
                return new LSL_Types.Vector3(0.0, -Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
        }

        /* From wiki:
        The Euler angle vector (in radians) is converted to a rotation by doing the rotations around the 3 axes
        in Z, Y, X order. So llEuler2Rot(<1.0, 2.0, 3.0> * DEG_TO_RAD) generates a rotation by taking the zero rotation,
        a vector pointing along the X axis, first rotating it 3 degrees around the global Z axis, then rotating the resulting
        vector 2 degrees around the global Y axis, and finally rotating that 1 degree around the global X axis.
        */

        /* How we arrived at this llEuler2Rot
         *
         * Experiment in SL to determine conventions:
         *   llEuler2Rot(<PI,0,0>)=<1,0,0,0>
         *   llEuler2Rot(<0,PI,0>)=<0,1,0,0>
         *   llEuler2Rot(<0,0,PI>)=<0,0,1,0>
         *
         * Important facts about Quaternions
         *  - multiplication is non-commutative (a*b != b*a)
         *  - http://en.wikipedia.org/wiki/Quaternion#Basis_multiplication
         *
         * Above SL experiment gives (c1,c2,c3,s1,s2,s3 as defined in our llEuler2Rot):
         *   Qx = c1+i*s1
         *   Qy = c2+j*s2;
         *   Qz = c3+k*s3;
         *
         * Rotations applied in order (from above) Z, Y, X
         * Q = (Qz * Qy) * Qx
         * ((c1+i*s1)*(c2+j*s2))*(c3+k*s3)
         * (c1*c2+i*s1*c2+j*c1*s2+ij*s1*s2)*(c3+k*s3)
         * (c1*c2+i*s1*c2+j*c1*s2+k*s1*s2)*(c3+k*s3)
         * c1*c2*c3+i*s1*c2*c3+j*c1*s2*c3+k*s1*s2*c3+k*c1*c2*s3+ik*s1*c2*s3+jk*c1*s2*s3+kk*s1*s2*s3
         * c1*c2*c3+i*s1*c2*c3+j*c1*s2*c3+k*s1*s2*c3+k*c1*c2*s3 -j*s1*c2*s3 +i*c1*s2*s3   -s1*s2*s3
         * regroup: x=i*(s1*c2*c3+c1*s2*s3)
         *          y=j*(c1*s2*c3-s1*c2*s3)
         *          z=k*(s1*s2*c3+c1*c2*s3)
         *          s=   c1*c2*c3-s1*s2*s3
         *
         * This implementation agrees with the functions found here:
         * http://lslwiki.net/lslwiki/wakka.php?wakka=LibraryRotationFunctions
         * And with the results in SL.
         *
         * It's also possible to calculate llEuler2Rot by direct multiplication of
         * the Qz, Qy, and Qx vectors (as above - and done in the "accurate" function
         * from the wiki).
         * Apparently in some cases this is better from a numerical precision perspective?
         */

        public LSL_Types.Quaternion llEuler2Rot(LSL_Types.Vector3 v)
        {
            m_host.AddScriptLPS(1);

            double x,y,z,s;

            double c1 = Math.Cos(v.x/2.0);
            double c2 = Math.Cos(v.y/2.0);
            double c3 = Math.Cos(v.z/2.0);
            double s1 = Math.Sin(v.x/2.0);
            double s2 = Math.Sin(v.y/2.0);
            double s3 = Math.Sin(v.z/2.0);

            x = s1*c2*c3+c1*s2*s3;
            y = c1*s2*c3-s1*c2*s3;
            z = s1*s2*c3+c1*c2*s3;
            s = c1*c2*c3-s1*s2*s3;

            return new LSL_Types.Quaternion(x, y, z, s);
        }

        public LSL_Types.Quaternion llAxes2Rot(LSL_Types.Vector3 fwd, LSL_Types.Vector3 left, LSL_Types.Vector3 up)
        {
            m_host.AddScriptLPS(1);
            double x, y, z, s;
            int f = 0;
            // Important Note: q1=<x,y,z,s> is equal to q2=<-x,-y,-z,-s>
            // Computing quaternion x,y,z,s values
            x = ((fwd.x - left.y - up.z + 1) / 4);
            x *= x;
            x = Math.Sqrt(Math.Sqrt(x));
            y = ((1 - up.z) / 2 - x * x);
            y *= y;
            y = Math.Sqrt(Math.Sqrt(y));
            z = ((1 - left.y) / 2 - x * x);
            z *= z;
            z = Math.Sqrt(Math.Sqrt(z));
            s = (1 - x * x - y * y - z * z);
            s *= s;
            s = Math.Sqrt(Math.Sqrt(s));

            // Set f for signs detection
            if (fwd.y + left.x >= 0) { f += 1; }
            if (fwd.z + up.x >= 0) { f += 2; }
            if (left.z - up.y >= 0) { f += 4; }
            // Set correct quaternion signs based on f value
            if (f == 0) { x = -x; }
            if (f == 1) { x = -x; y = -y; }
            if (f == 2) { x = -x; z = -z; }
            if (f == 3) { s = -s; }
            if (f == 4) { x = -x; s = -s; }
            if (f == 5) { z = -z; }
            if (f == 6) { y = -y; }

            LSL_Types.Quaternion result = new LSL_Types.Quaternion(x, y, z, s);

            // a hack to correct a few questionable angles :(
            if (llVecDist(llRot2Fwd(result), fwd) > 0.001 || llVecDist(llRot2Left(result), left) > 0.001)
                result.s = -s;

            return result;
        }

        public LSL_Types.Vector3 llRot2Fwd(LSL_Types.Quaternion r)
        {
            m_host.AddScriptLPS(1);

            double x, y, z, m;

            m = r.x * r.x + r.y * r.y + r.z * r.z + r.s * r.s;
            // m is always greater than zero
            // if m is not equal to 1 then Rotation needs to be normalized
            if (Math.Abs(1.0 - m) > 0.000001) // allow a little slop here for calculation precision
            {
                m = 1.0 / Math.Sqrt(m);
                r.x *= m;
                r.y *= m;
                r.z *= m;
                r.s *= m;
            }

            // Fast Algebric Calculations instead of Vectors & Quaternions Product
            x = r.x * r.x - r.y * r.y - r.z * r.z + r.s * r.s;
            y = 2 * (r.x * r.y + r.z * r.s);
            z = 2 * (r.x * r.z - r.y * r.s);
            return (new LSL_Types.Vector3(x, y, z));
        }

        public LSL_Types.Vector3 llRot2Left(LSL_Types.Quaternion r)
        {
            m_host.AddScriptLPS(1);

            double x, y, z, m;

            m = r.x * r.x + r.y * r.y + r.z * r.z + r.s * r.s;
            // m is always greater than zero
            // if m is not equal to 1 then Rotation needs to be normalized
            if (Math.Abs(1.0 - m) > 0.000001) // allow a little slop here for calculation precision
            {
                m = 1.0 / Math.Sqrt(m);
                r.x *= m;
                r.y *= m;
                r.z *= m;
                r.s *= m;
            }

            // Fast Algebric Calculations instead of Vectors & Quaternions Product
            x = 2 * (r.x * r.y - r.z * r.s);
            y = -r.x * r.x + r.y * r.y - r.z * r.z + r.s * r.s;
            z = 2 * (r.x * r.s + r.y * r.z);
            return (new LSL_Types.Vector3(x, y, z));
        }

        public LSL_Types.Vector3 llRot2Up(LSL_Types.Quaternion r)
        {
            m_host.AddScriptLPS(1);
            double x, y, z, m;

            m = r.x * r.x + r.y * r.y + r.z * r.z + r.s * r.s;
            // m is always greater than zero
            // if m is not equal to 1 then Rotation needs to be normalized
            if (Math.Abs(1.0 - m) > 0.000001) // allow a little slop here for calculation precision
            {
                m = 1.0 / Math.Sqrt(m);
                r.x *= m;
                r.y *= m;
                r.z *= m;
                r.s *= m;
            }

            // Fast Algebric Calculations instead of Vectors & Quaternions Product
            x = 2 * (r.x * r.z + r.y * r.s);
            y = 2 * (-r.x * r.s + r.y * r.z);
            z = -r.x * r.x - r.y * r.y + r.z * r.z + r.s * r.s;
            return (new LSL_Types.Vector3(x, y, z));
        }

        public LSL_Types.Quaternion llRotBetween(LSL_Types.Vector3 a, LSL_Types.Vector3 b)
        {
            //A and B should both be normalized
            m_host.AddScriptLPS(1);
            double dotProduct = LSL_Types.Vector3.Dot(a, b);
            LSL_Types.Vector3 crossProduct = LSL_Types.Vector3.Cross(a, b);
            double magProduct = LSL_Types.Vector3.Mag(a) * LSL_Types.Vector3.Mag(b);
            double angle = Math.Acos(dotProduct / magProduct);
            LSL_Types.Vector3 axis = LSL_Types.Vector3.Norm(crossProduct);
            double s = Math.Sin(angle / 2);

            return new LSL_Types.Quaternion(axis.x * s, axis.y * s, axis.z * s, (float)Math.Cos(angle / 2));
        }

        public void llWhisper(int channelID, string text)
        {
            m_host.AddScriptLPS(1);

            if (text.Length > 1023)
                text = text.Substring(0, 1023);

            World.SimChat(Helpers.StringToField(text),
                          ChatTypeEnum.Whisper, channelID, m_host.AbsolutePosition, m_host.Name, m_host.UUID, false);

            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.DeliverMessage(ChatTypeEnum.Whisper, channelID, m_host.Name, m_host.UUID, text);
        }

        public void llShout(int channelID, string text)
        {
            m_host.AddScriptLPS(1);

            if (text.Length > 1023)
                text = text.Substring(0, 1023);

            World.SimChat(Helpers.StringToField(text),
                          ChatTypeEnum.Shout, channelID, m_host.AbsolutePosition, m_host.Name, m_host.UUID, true);

            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.DeliverMessage(ChatTypeEnum.Shout, channelID, m_host.Name, m_host.UUID, text);
        }

        public void llRegionSay(int channelID, string text)
        {
            if (channelID == 0)
            {
                LSLError("Cannot use llRegionSay() on channel 0");
                return;
            }

            if (text.Length > 1023)
                text = text.Substring(0, 1023);

            m_host.AddScriptLPS(1);

            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.DeliverMessage(ChatTypeEnum.Region, channelID, m_host.Name, m_host.UUID, text);
        }

        public LSL_Types.LSLInteger llListen(int channelID, string name, string ID, string msg)
        {
            m_host.AddScriptLPS(1);
            LLUUID keyID;
            LLUUID.TryParse(ID, out keyID);
            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            return wComm.Listen(m_localID, m_itemID, m_host.UUID, channelID, name, keyID, msg);
        }

        public void llListenControl(int number, int active)
        {
            m_host.AddScriptLPS(1);
            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.ListenControl(m_itemID, number, active);
        }

        public void llListenRemove(int number)
        {
            m_host.AddScriptLPS(1);
            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
            wComm.ListenRemove(m_itemID, number);
        }

        public void llSensor(string name, string id, int type, double range, double arc)
        {
            m_host.AddScriptLPS(1);
            LLUUID keyID = LLUUID.Zero;
            LLUUID.TryParse(id, out keyID);

            AsyncCommands.SensorRepeatPlugin.SenseOnce(m_localID, m_itemID, name, keyID, type, range, arc, m_host);
       }

        public void llSensorRepeat(string name, string id, int type, double range, double arc, double rate)
        {
            m_host.AddScriptLPS(1);
            LLUUID keyID = LLUUID.Zero;
            LLUUID.TryParse(id, out keyID);

            AsyncCommands.SensorRepeatPlugin.SetSenseRepeatEvent(m_localID, m_itemID, name, keyID, type, range, arc, rate, m_host);
        }

        public void llSensorRemove()
        {
            m_host.AddScriptLPS(1);
            AsyncCommands.SensorRepeatPlugin.UnSetSenseRepeaterEvents(m_localID, m_itemID);
        }

        public string resolveName(LLUUID objecUUID)
        {
            // try avatar username surname
            CachedUserInfo profile = World.CommsManager.UserProfileCacheService.GetUserDetails(objecUUID);
            if (profile != null && profile.UserProfile != null)
            {
                string avatarname = profile.UserProfile.FirstName + " " + profile.UserProfile.SurName;
                return avatarname;
            }
            // try an scene object
            SceneObjectPart SOP = World.GetSceneObjectPart(objecUUID);
            if (SOP != null)
            {
                string objectname = SOP.Name;
                return objectname;
            }

            EntityBase SensedObject;
            lock (World.Entities)
            {
                World.Entities.TryGetValue(objecUUID, out SensedObject);
            }

            if (SensedObject == null)
                return String.Empty;
            return SensedObject.Name;
        }

        public string llDetectedName(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return String.Empty;
            return d.Name;
        }

        public string llDetectedKey(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return String.Empty;
            return d.Key.ToString();
        }

        public string llDetectedOwner(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return String.Empty;
            return d.Owner.ToString();
        }

        public LSL_Types.LSLInteger llDetectedType(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return 0;
            return new LSL_Types.LSLInteger(d.Type);
        }

        public LSL_Types.Vector3 llDetectedPos(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return new LSL_Types.Vector3();
            return d.Position;
        }

        public LSL_Types.Vector3 llDetectedVel(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return new LSL_Types.Vector3();
            return d.Velocity;
        }

        public LSL_Types.Vector3 llDetectedGrab(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams parms = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (parms == null)
                return new LSL_Types.Vector3(0, 0, 0);

            return parms.OffsetPos;
        }

        public LSL_Types.Quaternion llDetectedRot(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return new LSL_Types.Quaternion();
            return d.Rotation;
        }

        public LSL_Types.LSLInteger llDetectedGroup(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams d = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (d == null)
                return new LSL_Types.LSLInteger(0);
            if (m_host.GroupID == d.Group)
                return new LSL_Types.LSLInteger(1);
            return new LSL_Types.LSLInteger(0);
        }

        public LSL_Types.LSLInteger llDetectedLinkNumber(int number)
        {
            m_host.AddScriptLPS(1);
            DetectParams parms = m_ScriptEngine.GetDetectParams(m_itemID, number);
            if (parms == null)
                return new LSL_Types.LSLInteger(0);

            return new LSL_Types.LSLInteger(parms.LinkNum);
        }

        public void llDie()
        {
            m_host.AddScriptLPS(1);
            throw new SelfDeleteException();
        }

        public double llGround(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            int x = (int)(m_host.AbsolutePosition.X + offset.x);
            int y = (int)(m_host.AbsolutePosition.Y + offset.y);
            return World.GetLandHeight(x, y);
        }

        public double llCloud(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llCloud");
            return 0;
        }

        public LSL_Types.Vector3 llWind(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llWind");
            return new LSL_Types.Vector3();
        }

        public void llSetStatus(int status, int value)
        {
            m_host.AddScriptLPS(1);

            int statusrotationaxis = 0;

            if ((status & ScriptBaseClass.STATUS_PHYSICS) == ScriptBaseClass.STATUS_PHYSICS)
            {
                if (value == 1)
                {
                    SceneObjectGroup group = m_host.ParentGroup;
                    if (group == null)
                        return;
                    bool allow = true;
                    foreach (SceneObjectPart part in group.Children.Values)
                    {
                        if (part.Scale.X > World.m_maxPhys || part.Scale.Y > World.m_maxPhys || part.Scale.Z > World.m_maxPhys)
                        {
                            allow = false;
                            break;
                        }
                    }

                    if (!allow)
                        return;
                    m_host.ScriptSetPhysicsStatus(true);
                }
                else
                    m_host.ScriptSetPhysicsStatus(false);
            }

            if ((status & ScriptBaseClass.STATUS_PHANTOM) == ScriptBaseClass.STATUS_PHANTOM)
            {
                if (value == 1)
                    m_host.ScriptSetPhantomStatus(true);
                else
                    m_host.ScriptSetPhantomStatus(false);
            }

            if ((status & ScriptBaseClass.STATUS_CAST_SHADOWS) == ScriptBaseClass.STATUS_CAST_SHADOWS)
            {
                m_host.AddFlag(LLObject.ObjectFlags.CastShadows);
            }

            if ((status & ScriptBaseClass.STATUS_ROTATE_X) == ScriptBaseClass.STATUS_ROTATE_X)
            {
                statusrotationaxis |= ScriptBaseClass.STATUS_ROTATE_X;
            }

            if ((status & ScriptBaseClass.STATUS_ROTATE_Y) == ScriptBaseClass.STATUS_ROTATE_Y)
            {
                statusrotationaxis |= ScriptBaseClass.STATUS_ROTATE_Y;
            }

            if ((status & ScriptBaseClass.STATUS_ROTATE_Z) == ScriptBaseClass.STATUS_ROTATE_Z)
            {
                statusrotationaxis |= ScriptBaseClass.STATUS_ROTATE_Z;
            }

            if ((status & ScriptBaseClass.STATUS_BLOCK_GRAB) == ScriptBaseClass.STATUS_BLOCK_GRAB)
            {
                NotImplemented("llSetStatus - STATUS_BLOCK_GRAB");
            }

            if ((status & ScriptBaseClass.STATUS_DIE_AT_EDGE) == ScriptBaseClass.STATUS_DIE_AT_EDGE)
            {
                if (value == 1)
                    m_host.SetDieAtEdge(true);
                else
                    m_host.SetDieAtEdge(false);
            }

            if ((status & ScriptBaseClass.STATUS_RETURN_AT_EDGE) == ScriptBaseClass.STATUS_RETURN_AT_EDGE)
            {
                NotImplemented("llSetStatus - STATUS_RETURN_AT_EDGE");
            }

            if ((status & ScriptBaseClass.STATUS_SANDBOX) == ScriptBaseClass.STATUS_SANDBOX)
            {
                NotImplemented("llSetStatus - STATUS_SANDBOX");
            }

            if (statusrotationaxis != 0)
            {
                m_host.SetAxisRotation(statusrotationaxis, value);
            }
        }

        public LSL_Types.LSLInteger llGetStatus(int status)
        {
            m_host.AddScriptLPS(1);
            // Console.WriteLine(m_host.UUID.ToString() + " status is " + m_host.GetEffectiveObjectFlags().ToString());
            switch (status)
            {
                case ScriptBaseClass.STATUS_PHYSICS:
                    if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.Physics) == (uint)LLObject.ObjectFlags.Physics)
                    {
                        return 1;
                    }
                    return 0;

                case ScriptBaseClass.STATUS_PHANTOM:
                    if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.Phantom) == (uint)LLObject.ObjectFlags.Phantom)
                    {
                        return 1;
                    }
                    return 0;

                case ScriptBaseClass.STATUS_CAST_SHADOWS:
                    if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.CastShadows) == (uint)LLObject.ObjectFlags.CastShadows)
                    {
                        return 1;
                    }
                    return 0;

                case ScriptBaseClass.STATUS_BLOCK_GRAB:
                    NotImplemented("llGetStatus - STATUS_BLOCK_GRAB");
                    return 0;

                case ScriptBaseClass.STATUS_DIE_AT_EDGE:
                    if (m_host.GetDieAtEdge())
                        return 1;
                    else
                        return 0;

                case ScriptBaseClass.STATUS_RETURN_AT_EDGE:
                    NotImplemented("llGetStatus - STATUS_RETURN_AT_EDGE");
                    return 0;

                case ScriptBaseClass.STATUS_ROTATE_X:
                    NotImplemented("llGetStatus - STATUS_ROTATE_X");
                    return 0;

                case ScriptBaseClass.STATUS_ROTATE_Y:
                    NotImplemented("llGetStatus - STATUS_ROTATE_Y");
                    return 0;

                case ScriptBaseClass.STATUS_ROTATE_Z:
                    NotImplemented("llGetStatus - STATUS_ROTATE_Z");
                    return 0;

                case ScriptBaseClass.STATUS_SANDBOX:
                    NotImplemented("llGetStatus - STATUS_SANDBOX");
                    return 0;
            }
            return 0;
        }

        public void llSetScale(LSL_Types.Vector3 scale)
        {
            m_host.AddScriptLPS(1);
            SetScale(m_host, scale);
        }

        private void SetScale(SceneObjectPart part, LSL_Types.Vector3 scale)
        {
            // TODO: this needs to trigger a persistance save as well

            if (part == null || part.ParentGroup == null || part.ParentGroup.RootPart == null)
                return;

            if (part.ParentGroup.RootPart.PhysActor != null && part.ParentGroup.RootPart.PhysActor.IsPhysical)
            {
                if (scale.x > World.m_maxPhys)
                    scale.x = World.m_maxPhys;
                if (scale.y > World.m_maxPhys)
                    scale.y = World.m_maxPhys;
                if (scale.z > World.m_maxPhys)
                    scale.z = World.m_maxPhys;
            }
            if (scale.x > World.m_maxNonphys)
                scale.x = World.m_maxNonphys;
            if (scale.y > World.m_maxNonphys)
                scale.y = World.m_maxNonphys;
            if (scale.z > World.m_maxNonphys)
                scale.z = World.m_maxNonphys;
            LLVector3 tmp = part.Scale;
            tmp.X = (float)scale.x;
            tmp.Y = (float)scale.y;
            tmp.Z = (float)scale.z;
            part.Scale = tmp;
            part.SendFullUpdateToAllClients();
        }

        public LSL_Types.Vector3 llGetScale()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.Scale.X, m_host.Scale.Y, m_host.Scale.Z);
        }

        public void llSetColor(LSL_Types.Vector3 color, int face)
        {
            m_host.AddScriptLPS(1);

            SetColor(m_host, color, face);
        }

        private void SetColor(SceneObjectPart part, LSL_Types.Vector3 color, int face)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            LLColor texcolor;
            if (face > -1)
            {
                texcolor = tex.CreateFace((uint)face).RGBA;
                texcolor.R = (float)Math.Abs(color.x - 1);
                texcolor.G = (float)Math.Abs(color.y - 1);
                texcolor.B = (float)Math.Abs(color.z - 1);
                tex.FaceTextures[face].RGBA = texcolor;
                part.UpdateTexture(tex);
                return;
            }
            else if (face == -1)
            {
                for (uint i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        texcolor = tex.FaceTextures[i].RGBA;
                        texcolor.R = (float)Math.Abs(color.x - 1);
                        texcolor.G = (float)Math.Abs(color.y - 1);
                        texcolor.B = (float)Math.Abs(color.z - 1);
                        tex.FaceTextures[i].RGBA = texcolor;
                    }
                    texcolor = tex.DefaultTexture.RGBA;
                    texcolor.R = (float)Math.Abs(color.x - 1);
                    texcolor.G = (float)Math.Abs(color.y - 1);
                    texcolor.B = (float)Math.Abs(color.z - 1);
                    tex.DefaultTexture.RGBA = texcolor;
                }
                part.UpdateTexture(tex);
                return;
            }
        }

        public void SetGlow(SceneObjectPart part, int face, float glow)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            if (face > -1)
            {
                tex.CreateFace((uint) face);
                tex.FaceTextures[face].Glow = glow;
                part.UpdateTexture(tex);
                return;
            }
            else if (face == -1)
            {
                for (uint i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].Glow = glow;
                    }
                    tex.DefaultTexture.Glow = glow;
                }
                part.UpdateTexture(tex);
                return;
            }
        }

        public void SetShiny(SceneObjectPart part, int face, int shiny, Bumpiness bump)
        {

            Shininess sval = new Shininess();

            switch (shiny)
            {
            case 0:
                sval = Shininess.None;
                break;
            case 1:
                sval = Shininess.Low;
                break;
            case 2:
                sval = Shininess.Medium;
                break;
            case 3:
                sval = Shininess.High;
                break;
            default:
                sval = Shininess.None;
                break;
            }

            LLObject.TextureEntry tex = part.Shape.Textures;
            if (face > -1)
            {
                tex.CreateFace((uint) face);
                tex.FaceTextures[face].Shiny = sval;
                tex.FaceTextures[face].Bump = bump;
                part.UpdateTexture(tex);
                return;
            }
            else if (face == -1)
            {
                for (uint i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].Shiny = sval;
                        tex.FaceTextures[i].Bump = bump;;
                    }
                    tex.DefaultTexture.Shiny = sval;
                    tex.DefaultTexture.Bump = bump;
                }
                part.UpdateTexture(tex);
                return;
            }
        }

        public void SetFullBright(SceneObjectPart part, int face, bool bright)
        {
             LLObject.TextureEntry tex = part.Shape.Textures;
             if (face > -1)
             {
                 tex.CreateFace((uint) face);
                 tex.FaceTextures[face].Fullbright = bright;
                 part.UpdateTexture(tex);
                 return;
             }
             else if (face == -1)
             {
                 for (uint i = 0; i < 32; i++)
                 {
                     if (tex.FaceTextures[i] != null)
                     {
                         tex.FaceTextures[i].Fullbright = bright;
                     }
                 }
                 tex.DefaultTexture.Fullbright = bright;
                 part.UpdateTexture(tex);
                 return;
             }
         }

        public double llGetAlpha(int face)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            if (face == -1) // TMP: Until we can determine number of sides, ALL_SIDES (-1) will return default color
            {
                return (double)((tex.DefaultTexture.RGBA.A * 255) / 255);
            }
            if (face > -1)
            {
                return (double)((tex.GetFace((uint)face).RGBA.A * 255) / 255);
            }
            return 0;
        }

        public void llSetAlpha(double alpha, int face)
        {
            m_host.AddScriptLPS(1);

            SetAlpha(m_host, alpha, face);
        }

        private void SetAlpha(SceneObjectPart part, double alpha, int face)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            LLColor texcolor;
            if (face > -1)
            {
                texcolor = tex.CreateFace((uint)face).RGBA;
                texcolor.A = (float)Math.Abs(alpha - 1);
                tex.FaceTextures[face].RGBA = texcolor;
                part.UpdateTexture(tex);
                return;
            }
            else if (face == -1)
            {
                for (int i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        texcolor = tex.FaceTextures[i].RGBA;
                        texcolor.A = (float)Math.Abs(alpha - 1);
                        tex.FaceTextures[i].RGBA = texcolor;
                    }
                }
                texcolor = tex.DefaultTexture.RGBA;
                texcolor.A = (float)Math.Abs(alpha - 1);
                tex.DefaultTexture.RGBA = texcolor;
                part.UpdateTexture(tex);
                return;
            }
        }

        /// <summary>
        /// Set flexi parameters of a part.
        ///
        /// FIXME: Much of this code should probably be within the part itself.
        /// </summary>
        /// <param name="part"></param>
        /// <param name="flexi"></param>
        /// <param name="softness"></param>
        /// <param name="gravity"></param>
        /// <param name="friction"></param>
        /// <param name="wind"></param>
        /// <param name="tension"></param>
        /// <param name="Force"></param>
        private void SetFlexi(SceneObjectPart part, bool flexi, int softness, float gravity, float friction,
            float wind, float tension, LSL_Types.Vector3 Force)
        {
            if (part == null)
                return;

            bool needs_fakedelete = false;
            if (flexi)
            {
                if (!part.Shape.FlexiEntry)
                {
                    needs_fakedelete = true;
                }
                part.Shape.FlexiEntry = true;   // this setting flexi true isn't working, but the below parameters do
                                                // work once the prim is already flexi
                part.Shape.FlexiSoftness = softness;
                part.Shape.FlexiGravity = gravity;
                part.Shape.FlexiDrag = friction;
                part.Shape.FlexiWind = wind;
                part.Shape.FlexiTension = tension;
                part.Shape.FlexiForceX = (float)Force.x;
                part.Shape.FlexiForceY = (float)Force.y;
                part.Shape.FlexiForceZ = (float)Force.z;
                part.Shape.PathCurve = 0x80;

            }
            else
            {
                if (part.Shape.FlexiEntry)
                {
                    needs_fakedelete = true;
                }
                part.Shape.FlexiEntry = false;
            }

            needs_fakedelete = false;
            if (needs_fakedelete)
            {
                if (part.ParentGroup != null)
                {
                    part.ParentGroup.FakeDeleteGroup();
                }
            }

            part.ParentGroup.HasGroupChanged = true;
            part.ScheduleFullUpdate();
        }

        /// <summary>
        /// Set a light point on a part
        ///
        /// FIXME: Much of this code should probably be in SceneObjectGroup
        /// </summary>
        /// <param name="part"></param>
        /// <param name="light"></param>
        /// <param name="color"></param>
        /// <param name="intensity"></param>
        /// <param name="radius"></param>
        /// <param name="falloff"></param>
        private void SetPointLight(SceneObjectPart part, bool light, LSL_Types.Vector3 color, float intensity, float radius, float falloff)
        {
            if (part == null)
                return;

            if (light)
            {
                part.Shape.LightEntry = true;
                part.Shape.LightColorR = (float)color.x;
                part.Shape.LightColorG = (float)color.y;
                part.Shape.LightColorB = (float)color.z;
                part.Shape.LightIntensity = intensity;
                part.Shape.LightRadius = radius;
                part.Shape.LightFalloff = falloff;
            }
            else
            {
                part.Shape.LightEntry = false;
            }

            part.ParentGroup.HasGroupChanged = true;
            part.ScheduleFullUpdate();
        }

        public LSL_Types.Vector3 llGetColor(int face)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            LLColor texcolor;
            LSL_Types.Vector3 rgb;
            if (face == -1) // TMP: Until we can determine number of sides, ALL_SIDES (-1) will return default color
            {
                texcolor = tex.DefaultTexture.RGBA;
                rgb.x = (255 - (texcolor.R * 255)) / 255;
                rgb.y = (255 - (texcolor.G * 255)) / 255;
                rgb.z = (255 - (texcolor.B * 255)) / 255;
                return rgb;
            }
            if (face > -1)
            {
                texcolor = tex.GetFace((uint)face).RGBA;
                rgb.x = (255 - (texcolor.R * 255)) / 255;
                rgb.y = (255 - (texcolor.G * 255)) / 255;
                rgb.z = (255 - (texcolor.B * 255)) / 255;
                return rgb;
            }
            else
            {
                return new LSL_Types.Vector3();
            }
        }

        public void llSetTexture(string texture, int face)
        {
            m_host.AddScriptLPS(1);
            SetTexture(m_host, texture, face);
        }

        private void SetTexture(SceneObjectPart part, string texture, int face)
        {
            LLUUID textureID=new LLUUID();

            if (!LLUUID.TryParse(texture, out textureID))
            {
                textureID=InventoryKey(texture, (int)AssetType.Texture);
            }

            if (textureID == LLUUID.Zero)
                return;

            LLObject.TextureEntry tex = part.Shape.Textures;

            if (face > -1)
            {
                LLObject.TextureEntryFace texface = tex.CreateFace((uint)face);
                texface.TextureID = textureID;
                tex.FaceTextures[face] = texface;
                part.UpdateTexture(tex);
                return;
            }
            else if (face == -1)
            {
                for (uint i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].TextureID = textureID;
                    }
                }
                tex.DefaultTexture.TextureID = textureID;
                part.UpdateTexture(tex);
                return;
            }
        }

        public void llScaleTexture(double u, double v, int face)
        {
            m_host.AddScriptLPS(1);

            ScaleTexture(m_host, u, v, face);
        }

        private void ScaleTexture(SceneObjectPart part, double u, double v, int face)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            if (face > -1)
            {
                LLObject.TextureEntryFace texface = tex.CreateFace((uint)face);
                texface.RepeatU = (float)u;
                texface.RepeatV = (float)v;
                tex.FaceTextures[face] = texface;
                part.UpdateTexture(tex);
                return;
            }
            if (face == -1)
            {
                for (int i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].RepeatU = (float)u;
                        tex.FaceTextures[i].RepeatV = (float)v;
                    }
                }
                tex.DefaultTexture.RepeatU = (float)u;
                tex.DefaultTexture.RepeatV = (float)v;
                part.UpdateTexture(tex);
                return;
            }
        }

        public void llOffsetTexture(double u, double v, int face)
        {
            m_host.AddScriptLPS(1);
            OffsetTexture(m_host, u, v, face);
        }

        private void OffsetTexture(SceneObjectPart part, double u, double v, int face)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            if (face > -1)
            {
                LLObject.TextureEntryFace texface = tex.CreateFace((uint)face);
                texface.OffsetU = (float)u;
                texface.OffsetV = (float)v;
                tex.FaceTextures[face] = texface;
                part.UpdateTexture(tex);
                return;
            }
            if (face == -1)
            {
                for (int i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].OffsetU = (float)u;
                        tex.FaceTextures[i].OffsetV = (float)v;
                    }
                }
                tex.DefaultTexture.OffsetU = (float)u;
                tex.DefaultTexture.OffsetV = (float)v;
                part.UpdateTexture(tex);
                return;
            }
        }

        public void llRotateTexture(double rotation, int face)
        {
            m_host.AddScriptLPS(1);
            RotateTexture(m_host, rotation, face);
        }

        private void RotateTexture(SceneObjectPart part, double rotation, int face)
        {
            LLObject.TextureEntry tex = part.Shape.Textures;
            if (face > -1)
            {
                LLObject.TextureEntryFace texface = tex.CreateFace((uint)face);
                texface.Rotation = (float)rotation;
                tex.FaceTextures[face] = texface;
                part.UpdateTexture(tex);
                return;
            }
            if (face == -1)
            {
                for (int i = 0; i < 32; i++)
                {
                    if (tex.FaceTextures[i] != null)
                    {
                        tex.FaceTextures[i].Rotation = (float)rotation;
                    }
                }
                tex.DefaultTexture.Rotation = (float)rotation;
                part.UpdateTexture(tex);
                return;
            }
        }

        public string llGetTexture(int face)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            if (face == -1)
            {
                face = 0;
            }
            if (face > -1)
            {
                LLObject.TextureEntryFace texface;
                texface = tex.GetFace((uint)face);
                return texface.TextureID.ToString();
            }
            else
            {
                return String.Empty;
            }
        }

        public void llSetPos(LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);

            SetPos(m_host, pos);
        }

        private void SetPos(SceneObjectPart part, LSL_Types.Vector3 pos)
        {
            if (part.ParentID != 0)
            {
                part.UpdateOffSet(new LLVector3((float)pos.x, (float)pos.y, (float)pos.z));
            }
            else
            {
                part.UpdateGroupPosition(new LLVector3((float)pos.x, (float)pos.y, (float)pos.z));
            }
        }

        public LSL_Types.Vector3 llGetPos()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.AbsolutePosition.X,
                                         m_host.AbsolutePosition.Y,
                                         m_host.AbsolutePosition.Z);
        }

        public LSL_Types.Vector3 llGetLocalPos()
        {
            m_host.AddScriptLPS(1);
            if (m_host.ParentID != 0)
            {
                return new LSL_Types.Vector3(m_host.OffsetPosition.X,
                                             m_host.OffsetPosition.Y,
                                             m_host.OffsetPosition.Z);
            }
            else
            {
                return new LSL_Types.Vector3(m_host.AbsolutePosition.X,
                                             m_host.AbsolutePosition.Y,
                                             m_host.AbsolutePosition.Z);
            }
        }

        public void llSetRot(LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);

            SetRot(m_host, rot);
        }

        private void SetRot(SceneObjectPart part, LSL_Types.Quaternion rot)
        {
            part.UpdateRotation(new LLQuaternion((float)rot.x, (float)rot.y, (float)rot.z, (float)rot.s));
            // Update rotation does not move the object in the physics scene if it's a linkset.
            part.ParentGroup.AbsolutePosition = part.ParentGroup.AbsolutePosition;
        }

        public LSL_Types.Quaternion llGetRot()
        {
            m_host.AddScriptLPS(1);
            LLQuaternion q = m_host.RotationOffset;
            return new LSL_Types.Quaternion(q.X, q.Y, q.Z, q.W);
        }

        public LSL_Types.Quaternion llGetLocalRot()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Quaternion(m_host.RotationOffset.X, m_host.RotationOffset.Y, m_host.RotationOffset.Z, m_host.RotationOffset.W);
        }

        public void llSetForce(LSL_Types.Vector3 force, int local)
        {
            m_host.AddScriptLPS(1);
            //NotImplemented("llSetForce");

            if (m_host.ParentGroup != null)
            {
                if (m_host.ParentGroup.RootPart != null)
                {
                    if (local != 0)
                        force *= llGetRot();

                    m_host.ParentGroup.RootPart.SetForce(new PhysicsVector((float)force.x, (float)force.y, (float)force.z));
                }
            }
        }

        public LSL_Types.Vector3 llGetForce()
        {
            LSL_Types.Vector3 force = new LSL_Types.Vector3(0.0, 0.0, 0.0);

            m_host.AddScriptLPS(1);
            //NotImplemented("llGetForce");
            //return new LSL_Types.Vector3();

            if (m_host.ParentGroup != null)
            {
                if (m_host.ParentGroup.RootPart != null)
                {
                    PhysicsVector tmpForce = m_host.ParentGroup.RootPart.GetForce();
                    force.x = tmpForce.X;
                    force.y = tmpForce.Y;
                    force.z = tmpForce.Z;
                }
            }

            return force;
        }

        public LSL_Types.LSLInteger llTarget(LSL_Types.Vector3 position, double range)
        {
            m_host.AddScriptLPS(1);
            return m_host.registerTargetWaypoint(new LLVector3((float)position.x, (float)position.y, (float)position.z), (float)range);

        }

        public void llTargetRemove(int number)
        {
            m_host.AddScriptLPS(1);
            m_host.unregisterTargetWaypoint(number);
        }

        public LSL_Types.LSLInteger llRotTarget(LSL_Types.Quaternion rot, double error)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRotTarget");
            return 0;
        }

        public void llRotTargetRemove(int number)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRotTargetRemove");
        }

        public void llMoveToTarget(LSL_Types.Vector3 target, double tau)
        {
            m_host.AddScriptLPS(1);
            m_host.MoveToTarget(new LLVector3((float)target.x, (float)target.y, (float)target.z), (float)tau);
        }

        public void llStopMoveToTarget()
        {
            m_host.AddScriptLPS(1);
            m_host.StopMoveToTarget();
        }

        public void llApplyImpulse(LSL_Types.Vector3 force, int local)
        {
            m_host.AddScriptLPS(1);
            //No energy force yet

            if (force.x > 20000)
                    force.x = 20000;
            if (force.y > 20000)
                    force.y = 20000;
            if (force.z > 20000)
                    force.z = 20000;

            m_host.ApplyImpulse(new LLVector3((float)force.x, (float)force.y, (float)force.z), local != 0);
        }

        public void llApplyRotationalImpulse(LSL_Types.Vector3 force, int local)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llApplyRotationalImpulse");
        }

        public void llSetTorque(LSL_Types.Vector3 torque, int local)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetTorque");
        }

        public LSL_Types.Vector3 llGetTorque()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetTorque");
            return new LSL_Types.Vector3();
        }

        public void llSetForceAndTorque(LSL_Types.Vector3 force, LSL_Types.Vector3 torque, int local)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetForceAndTorque");
        }

        public LSL_Types.Vector3 llGetVel()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.Velocity.X, m_host.Velocity.Y, m_host.Velocity.Z);
        }

        public LSL_Types.Vector3 llGetAccel()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.Acceleration.X, m_host.Acceleration.Y, m_host.Acceleration.Z);
        }

        public LSL_Types.Vector3 llGetOmega()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.RotationalVelocity.X, m_host.RotationalVelocity.Y, m_host.RotationalVelocity.Z);
        }

        public double llGetTimeOfDay()
        {
            m_host.AddScriptLPS(1);
            return (double) (((DateTime.Now.TimeOfDay.TotalMilliseconds / 1000) % (3600*4))*World.TimeDilation);
        }

        public double llGetWallclock()
        {
            m_host.AddScriptLPS(1);
            return DateTime.Now.TimeOfDay.TotalSeconds;
        }

        public double llGetTime()
        {
            m_host.AddScriptLPS(1);
            TimeSpan ScriptTime = DateTime.Now - m_timer;
            return (double)((ScriptTime.TotalMilliseconds / 1000)*World.TimeDilation);
        }

        public void llResetTime()
        {
            m_host.AddScriptLPS(1);
            m_timer = DateTime.Now;
        }

        public double llGetAndResetTime()
        {
            m_host.AddScriptLPS(1);
            TimeSpan ScriptTime = DateTime.Now - m_timer;
            m_timer = DateTime.Now;
            return (double)((ScriptTime.TotalMilliseconds / 1000)*World.TimeDilation);
        }

        public void llSound()
        {
            m_host.AddScriptLPS(1);
            // This function has been deprecated
            // see http://www.lslwiki.net/lslwiki/wakka.php?wakka=llSound
            Deprecated("llSound");
        }

        // Xantor 20080528 PlaySound updated so it accepts an objectinventory name -or- a key to a sound
        // 20080530 Updated to remove code duplication
        public void llPlaySound(string sound, double volume)
        {
            m_host.AddScriptLPS(1);

            // send the sound, once, to all clients in range
            m_host.SendSound(KeyOrName(sound).ToString(), volume, false, 0);
        }

        // Xantor 20080528 we should do this differently.
        // 1) apply the sound to the object
        // 2) schedule full update
        // just sending the sound out once doesn't work so well when other avatars come in view later on
        // or when the prim gets moved, changed, sat on, whatever
        // see large number of mantises (mantes?)
        // 20080530 Updated to remove code duplication
        // 20080530 Stop sound if there is one, otherwise volume only changes don't work
        public void llLoopSound(string sound, double volume)
        {
            m_host.AddScriptLPS(1);

            if (m_host.Sound != LLUUID.Zero)
                llStopSound();

            m_host.Sound = KeyOrName(sound);
            m_host.SoundGain = volume;
            m_host.SoundFlags = 1;      // looping
            m_host.SoundRadius = 20;    // Magic number, 20 seems reasonable. Make configurable?

            m_host.ScheduleFullUpdate();
            m_host.SendFullUpdateToAllClients();
        }

        public void llLoopSoundMaster(string sound, double volume)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llLoopSoundMaster");
        }

        public void llLoopSoundSlave(string sound, double volume)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llLoopSoundSlave");
        }

        public void llPlaySoundSlave(string sound, double volume)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llPlaySoundSlave");
        }

        public void llTriggerSound(string sound, double volume)
        {
            m_host.AddScriptLPS(1);
            // send the sound, once, to all clients in range
            m_host.SendSound(KeyOrName(sound).ToString(), volume, false, 0);
        }

        // Xantor 20080528: Clear prim data of sound instead
        public void llStopSound()
        {
            m_host.AddScriptLPS(1);

            m_host.Sound = LLUUID.Zero;
            m_host.SoundGain = 0;
            m_host.SoundFlags = 0;
            m_host.SoundRadius = 0;

            m_host.ScheduleFullUpdate();
            m_host.SendFullUpdateToAllClients();

            // m_host.SendSound(LLUUID.Zero.ToString(), 1.0, false, 2);
        }

        public void llPreloadSound(string sound)
        {
            m_host.AddScriptLPS(1);
            m_host.PreloadSound(sound);
        }

        /// <summary>
        /// Return a portion of the designated string bounded by
        /// inclusive indices (start and end). As usual, the negative
        /// indices, and the tolerance for out-of-bound values, makes
        /// this more complicated than it might otherwise seem.
        /// </summary>

        public string llGetSubString(string src, int start, int end)
        {

            m_host.AddScriptLPS(1);

            // Normalize indices (if negative).
            // After normlaization they may still be
            // negative, but that is now relative to
            // the start, rather than the end, of the
            // sequence.

            if (start < 0)
            {
                start = src.Length+start;
            }
            if (end < 0)
            {
                end = src.Length+end;
            }

            // Conventional substring
            if (start <= end)
            {
                // Implies both bounds are out-of-range.
                if (end < 0 || start >= src.Length)
                {
                    return String.Empty;
                }
                // If end is positive, then it directly
                // corresponds to the lengt of the substring
                // needed (plus one of course). BUT, it
                // must be within bounds.
                if (end >= src.Length)
                {
                    end = src.Length-1;
                }

                if (start < 0)
                {
                    return src.Substring(0,end+1);
                }
                // Both indices are positive
                return src.Substring(start, (end+1) - start);
            }

            // Inverted substring (end < start)
            else
            {
                // Implies both indices are below the
                // lower bound. In the inverted case, that
                // means the entire string will be returned
                // unchanged.
                if (start < 0)
                {
                    return src;
                }
                // If both indices are greater than the upper
                // bound the result may seem initially counter
                // intuitive.
                if (end >= src.Length)
                {
                    return src;
                }

                if (end < 0)
                {
                    if (start < src.Length)
                    {
                        return src.Substring(start);
                    }
                    else
                    {
                        return String.Empty;
                    }
                }
                else
                {
                    if (start < src.Length)
                    {
                        return src.Substring(0,end+1) + src.Substring(start);
                    }
                    else
                    {
                        return src.Substring(0,end+1);
                    }
                }
            }
         }

        /// <summary>
        /// Delete substring removes the specified substring bounded
        /// by the inclusive indices start and end. Indices may be
        /// negative (indicating end-relative) and may be inverted,
        /// i.e. end < start.
        /// </summary>

        public string llDeleteSubString(string src, int start, int end)
        {

            m_host.AddScriptLPS(1);

            // Normalize indices (if negative).
            // After normlaization they may still be
            // negative, but that is now relative to
            // the start, rather than the end, of the
            // sequence.
            if (start < 0)
            {
                start = src.Length+start;
            }
            if (end < 0)
            {
                end = src.Length+end;
            }
            // Conventionally delimited substring
            if (start <= end)
            {
                // If both bounds are outside of the existing
                // string, then return unchanges.
                if (end < 0 || start >= src.Length)
                {
                    return src;
                }
                // At least one bound is in-range, so we
                // need to clip the out-of-bound argument.
                if (start < 0)
                {
                    start = 0;
                }

                if (end >= src.Length)
                {
                    end = src.Length-1;
                }

                return src.Remove(start,end-start+1);
            }
            // Inverted substring
            else
            {
                // In this case, out of bounds means that
                // the existing string is part of the cut.
                if (start < 0 || end >= src.Length)
                {
                    return String.Empty;
                }

                if (end > 0)
                {
                    if (start < src.Length)
                    {
                        return src.Remove(start).Remove(0,end+1);
                    }
                    else
                    {
                        return src.Remove(0,end+1);
                    }
                }
                else
                {
                    if (start < src.Length)
                    {
                        return src.Remove(start);
                    }
                    else
                    {
                        return src;
                    }
                }
            }
        }

        /// <summary>
        /// Insert string inserts the specified string identified by src
        /// at the index indicated by index. Index may be negative, in
        /// which case it is end-relative. The index may exceed either
        /// string bound, with the result being a concatenation.
        /// </summary>

        public string llInsertString(string dest, int index, string src)
        {

            m_host.AddScriptLPS(1);

            // Normalize indices (if negative).
            // After normlaization they may still be
            // negative, but that is now relative to
            // the start, rather than the end, of the
            // sequence.
            if (index < 0)
            {
                index = dest.Length+index;

                // Negative now means it is less than the lower
                // bound of the string.

                if (index < 0)
                {
                    return src+dest;
                }

            }

            if (index >= dest.Length)
            {
                return dest+src;
            }

            // The index is in bounds.
            // In this case the index refers to the index that will
            // be assigned to the first character of the inserted string.
            // So unlike the other string operations, we do not add one
            // to get the correct string length.
            return dest.Substring(0,index)+src+dest.Substring(index);

        }

        public string llToUpper(string src)
        {
            m_host.AddScriptLPS(1);
            return src.ToUpper();
        }

        public string llToLower(string src)
        {
            m_host.AddScriptLPS(1);
            return src.ToLower();
        }

        public LSL_Types.LSLInteger llGiveMoney(string destination, int amount)
        {
            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero)
                return 0;

            m_host.AddScriptLPS(1);

            if (m_host.TaskInventory[invItemID].PermsGranter == LLUUID.Zero)
                return 0;

            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_DEBIT) == 0)
            {
                LSLError("No permissions to give money");
                return 0;
            }

            LLUUID toID=new LLUUID();

            if (!LLUUID.TryParse(destination, out toID))
            {
                LSLError("Bad key in llGiveMoney");
                return 0;
            }

            IMoneyModule money=World.RequestModuleInterface<IMoneyModule>();

            if (money == null)
            {
                NotImplemented("llGiveMoney");
                return 0;
            }

            bool result=money.ObjectGiveMoney(m_host.ParentGroup.RootPart.UUID, m_host.ParentGroup.RootPart.OwnerID, toID, amount);

            if (result)
                return 1;

            return 0;
        }

        public void llMakeExplosion()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMakeExplosion");
        }

        public void llMakeFountain()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMakeFountain");
        }

        public void llMakeSmoke()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMakeSmoke");
        }

        public void llMakeFire()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMakeFire");
        }

        public void llRezAtRoot(string inventory, LSL_Types.Vector3 pos, LSL_Types.Vector3 vel, LSL_Types.Quaternion rot, int param)
        {
            m_host.AddScriptLPS(1);
            //NotImplemented("llRezObject");
            bool found = false;

            // Instead of using return;, I'm using continue; because in our TaskInventory implementation
            // it's possible to have two items with the same task inventory name.
            // this is an easter egg of sorts.

            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == inventory)
                {
                    // make sure we're an object.
                    if (inv.Value.InvType != (int)InventoryType.Object)
                    {
                        llSay(0, "Unable to create requested object. Object is missing from database.");
                        continue;
                    }

                    LLVector3 llpos = new LLVector3((float)pos.x, (float)pos.y, (float)pos.z);

                    // test if we're further away then 10m
                    if (Util.GetDistanceTo(llpos, m_host.AbsolutePosition) > 10)
                        return; // wiki says, if it's further away then 10m, silently fail.

                    LLVector3 llvel = new LLVector3((float)vel.x, (float)vel.y, (float)vel.z);

                    // need the magnitude later
                    float velmag = (float)Util.GetMagnitude(llvel);

                    SceneObjectGroup new_group = World.RezObject(m_host, inv.Value, llpos, new LLQuaternion((float)rot.x, (float)rot.y, (float)rot.z, (float)rot.s), llvel, param);

                    // If either of these are null, then there was an unknown error.
                    if (new_group == null)
                        continue;
                    if (new_group.RootPart == null)
                        continue;

                    // objects rezzed with this method are die_at_edge by default.
                    new_group.RootPart.SetDieAtEdge(true);

                    m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                            "object_rez", new Object[] {
                            new LSL_Types.LSLString(
                            new_group.RootPart.UUID.ToString()) },
                            new DetectParams[0]));

                    float groupmass = new_group.GetMass();

                    //Recoil.
                    llApplyImpulse(new LSL_Types.Vector3(llvel.X * groupmass, llvel.Y * groupmass, llvel.Z * groupmass), 0);
                    found = true;
                    //script delay
                    System.Threading.Thread.Sleep((int)((groupmass * velmag) / 10));
                    break;
                }
            }
            if (!found)
                llSay(0, "Could not find object " + inventory);
        }

        public void llRezObject(string inventory, LSL_Types.Vector3 pos, LSL_Types.Vector3 vel, LSL_Types.Quaternion rot, int param)
        {
            llRezAtRoot(inventory, pos, vel, rot, param);
        }

        public void llLookAt(LSL_Types.Vector3 target, double strength, double damping)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llLookAt");
        }

        public void llStopLookAt()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llStopLookAt");
        }

        public void llSetTimerEvent(double sec)
        {
            m_host.AddScriptLPS(1);
            // Setting timer repeat
            AsyncCommands.TimerPlugin.SetTimerEvent(m_localID, m_itemID, sec);
        }

        public void llSleep(double sec)
        {
            m_host.AddScriptLPS(1);
            Thread.Sleep((int)(sec * 1000));
        }

        public double llGetMass()
        {
            m_host.AddScriptLPS(1);
            return m_host.GetMass();
        }

        public void llCollisionFilter(string name, string id, int accept)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llCollisionFilter");
        }

        public void llTakeControls(int controls, int accept, int pass_on)
        {
            if (!m_host.TaskInventory.ContainsKey(InventorySelf()))
            {
                return;
            }

            if (m_host.TaskInventory[InventorySelf()].PermsGranter != LLUUID.Zero)
            {
                ScenePresence presence = World.GetScenePresence(m_host.TaskInventory[InventorySelf()].PermsGranter);

                if (presence != null)
                {
                    if ((m_host.TaskInventory[InventorySelf()].PermsMask & ScriptBaseClass.PERMISSION_TAKE_CONTROLS) != 0)
                    {
                        presence.RegisterControlEventsToScript(controls, accept, pass_on, m_localID, m_itemID);

                    }
                }
            }

            m_host.AddScriptLPS(1);
            //NotImplemented("llTakeControls");
        }

        public void llReleaseControls()
        {
            m_host.AddScriptLPS(1);

            if (!m_host.TaskInventory.ContainsKey(InventorySelf()))
            {
                return;
            }

            if (m_host.TaskInventory[InventorySelf()].PermsGranter != LLUUID.Zero)
            {
                ScenePresence presence = World.GetScenePresence(m_host.TaskInventory[InventorySelf()].PermsGranter);

                if (presence != null)
                {
                    if ((m_host.TaskInventory[InventorySelf()].PermsMask & ScriptBaseClass.PERMISSION_TAKE_CONTROLS) != 0)
                    {
                        // Unregister controls from Presence
                        presence.UnRegisterControlEventsToScript(m_localID, m_itemID);
                        // Remove Take Control permission.
                        m_host.TaskInventory[InventorySelf()].PermsMask &= ~ScriptBaseClass.PERMISSION_TAKE_CONTROLS;
                    }
                }
            }
        }

        public void llAttachToAvatar(int attachment)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llAttachToAvatar");
        }

        public void llDetachFromAvatar()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llDetachFromAvatar");
        }

        public void llTakeCamera(string avatar)
        {
            m_host.AddScriptLPS(1);
            Deprecated("llTakeCamera");
        }

        public void llReleaseCamera(string avatar)
        {
            m_host.AddScriptLPS(1);
            Deprecated("llReleaseCamera");
        }

        public string llGetOwner()
        {
            m_host.AddScriptLPS(1);

            return m_host.ObjectOwner.ToString();
        }

        public void llInstantMessage(string user, string message)
        {
            m_host.AddScriptLPS(1);

            // We may be able to use ClientView.SendInstantMessage here, but we need a client instance.
            // InstantMessageModule.OnInstantMessage searches through a list of scenes for a client matching the toAgent,
            // but I don't think we have a list of scenes available from here.
            // (We also don't want to duplicate the code in OnInstantMessage if we can avoid it.)

            // user is a UUID

            // TODO: figure out values for client, fromSession, and imSessionID
            // client.SendInstantMessage(m_host.UUID, fromSession, message, user, imSessionID, m_host.Name, AgentManager.InstantMessageDialog.MessageFromAgent, (uint)Util.UnixTimeSinceEpoch());
            LLUUID friendTransactionID = LLUUID.Random();

            //m_pendingFriendRequests.Add(friendTransactionID, fromAgentID);

            GridInstantMessage msg = new GridInstantMessage();
            msg.fromAgentID = new Guid(m_host.UUID.ToString()); // fromAgentID.UUID;
            msg.fromAgentSession = new Guid(friendTransactionID.ToString());// fromAgentSession.UUID;
            msg.toAgentID = new Guid(user); // toAgentID.UUID;
            msg.imSessionID = new Guid(friendTransactionID.ToString()); // This is the item we're mucking with here
//            Console.WriteLine("[Scripting IM]: From:" + msg.fromAgentID.ToString() + " To: " + msg.toAgentID.ToString() + " Session:" + msg.imSessionID.ToString() + " Message:" + message);
//            Console.WriteLine("[Scripting IM]: Filling Session: " + msg.imSessionID.ToString());
            msg.timestamp = (uint)Util.UnixTimeSinceEpoch();// timestamp;
            //if (client != null)
            //{
                msg.fromAgentName = m_host.Name;//client.FirstName + " " + client.LastName;// fromAgentName;
            //}
            //else
            //{
            //    msg.fromAgentName = "(hippos)";// Added for posterity.  This means that we can't figure out who sent it
            //}
            msg.message = message;
            msg.dialog = (byte)19; // messgage from script ??? // dialog;
            msg.fromGroup = false;// fromGroup;
            msg.offline = (byte)0; //offline;
            msg.ParentEstateID = 0; //ParentEstateID;
            msg.Position = new sLLVector3();// new sLLVector3(m_host.AbsolutePosition);
            msg.RegionID = World.RegionInfo.RegionID.UUID;//RegionID.UUID;
            msg.binaryBucket = new byte[0];// binaryBucket;
            World.TriggerGridInstantMessage(msg, InstantMessageReceiver.IMModule);
            //  NotImplemented("llInstantMessage");
      }

        public void llEmail(string address, string subject, string message)
        {
            m_host.AddScriptLPS(1);
            IEmailModule emailModule = m_ScriptEngine.World.RequestModuleInterface<IEmailModule>();
            if (emailModule == null)
                return;

            emailModule.SendEmail(m_host.UUID, address, subject, message);
        }

        public void llGetNextEmail(string address, string subject)
        {
            m_host.AddScriptLPS(1);
            IEmailModule emailModule = m_ScriptEngine.World.RequestModuleInterface<IEmailModule>();
            if (emailModule == null)
                return;
            Email email;

            email = emailModule.GetNextEmail(m_host.UUID, address, subject);

            if (email == null)
                return;

            m_ScriptEngine.PostObjectEvent(m_host.LocalId,
                    new EventParams("email",
                    new Object[] {
                        new LSL_Types.LSLString(email.time),
                        new LSL_Types.LSLString(email.sender),
                        new LSL_Types.LSLString(email.subject),
                        new LSL_Types.LSLString(email.message),
                        new LSL_Types.LSLInteger(email.numLeft)},
                    new DetectParams[0]));

        }

        public string llGetKey()
        {
            m_host.AddScriptLPS(1);
            return m_host.UUID.ToString();
        }

        public void llSetBuoyancy(double buoyancy)
        {
            m_host.AddScriptLPS(1);
            if (m_host.ParentGroup != null)
            {
                if (m_host.ParentGroup.RootPart != null)
                {
                    m_host.ParentGroup.RootPart.SetBuoyancy((float)buoyancy);
                }
            }
        }



        public void llSetHoverHeight(double height, int water, double tau)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetHoverHeight");
        }

        public void llStopHover()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llStopHover");
        }

        public void llMinEventDelay(double delay)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMinEventDelay");
        }

        public void llSoundPreload()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSoundPreload");
        }

        public void llRotLookAt(LSL_Types.Quaternion target, double strength, double damping)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRotLookAt");
        }

        public LSL_Types.LSLInteger llStringLength(string str)
        {
            m_host.AddScriptLPS(1);
            if (str.Length > 0)
            {
                return str.Length;
            }
            else
            {
                return 0;
            }
        }

        public void llStartAnimation(string anim)
        {
            m_host.AddScriptLPS(1);

            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero)
                return;

            if (m_host.TaskInventory[invItemID].PermsGranter == LLUUID.Zero)
                return;

            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_TRIGGER_ANIMATION) != 0)
            {
                ScenePresence presence = World.GetScenePresence(m_host.TaskInventory[invItemID].PermsGranter);

                if (presence != null)
                {
                    // Do NOT try to parse LLUUID, animations cannot be triggered by ID
                    LLUUID animID=InventoryKey(anim, (int)AssetType.Animation);
                    if (animID == LLUUID.Zero)
                        presence.AddAnimation(anim);
                    else
                        presence.AddAnimation(animID);
                }
            }
        }

        public void llStopAnimation(string anim)
        {
            m_host.AddScriptLPS(1);

            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero)
                return;

            if (m_host.TaskInventory[invItemID].PermsGranter == LLUUID.Zero)
                return;

            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_TRIGGER_ANIMATION) != 0)
            {
                LLUUID animID = new LLUUID();

                if (!LLUUID.TryParse(anim, out animID))
                {
                    animID=InventoryKey(anim);
                }

                if (animID == LLUUID.Zero)
                    return;

                ScenePresence presence = World.GetScenePresence(m_host.TaskInventory[invItemID].PermsGranter);

                if (presence != null)
                {
                    if (animID == LLUUID.Zero)
                        presence.RemoveAnimation(anim);
                    else
                        presence.RemoveAnimation(animID);
                }
            }
        }

        public void llPointAt()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llPointAt");
        }

        public void llStopPointAt()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llStopPointAt");
        }

        public void llTargetOmega(LSL_Types.Vector3 axis, double spinrate, double gain)
        {
            m_host.AddScriptLPS(1);
            m_host.RotationalVelocity = new LLVector3((float)(axis.x * spinrate), (float)(axis.y * spinrate), (float)(axis.z * spinrate));
            m_host.AngularVelocity = new LLVector3((float)(axis.x * spinrate), (float)(axis.y * spinrate), (float)(axis.z * spinrate));
            m_host.ScheduleTerseUpdate();
            m_host.SendTerseUpdateToAllClients();
        }

        public LSL_Types.LSLInteger llGetStartParameter()
        {
            m_host.AddScriptLPS(1);
            return m_ScriptEngine.GetStartParameter(m_itemID);
        }

        public void llGodLikeRezObject(string inventory, LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGodLikeRezObject");
        }

        public void llRequestPermissions(string agent, int perm)
        {
            LLUUID agentID=new LLUUID();

            if (!LLUUID.TryParse(agent, out agentID))
                return;

            LLUUID invItemID=InventorySelf();

            if (invItemID == LLUUID.Zero)
                return; // Not in a prim? How??

            if (agentID == LLUUID.Zero || perm == 0) // Releasing permissions
            {
                m_host.TaskInventory[invItemID].PermsGranter=LLUUID.Zero;
                m_host.TaskInventory[invItemID].PermsMask=0;

                m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                        "run_time_permissions", new Object[] {
                        new LSL_Types.LSLInteger(0) },
                        new DetectParams[0]));

                return;
            }

            m_host.AddScriptLPS(1);

            if (m_host.ParentGroup.RootPart.IsAttachment && agent == m_host.ParentGroup.RootPart.AttachedAvatar)
            {
                // When attached, certain permissions are implicit if requested from owner
                int implicitPerms = ScriptBaseClass.PERMISSION_TAKE_CONTROLS |
                        ScriptBaseClass.PERMISSION_TRIGGER_ANIMATION |
                        ScriptBaseClass.PERMISSION_CONTROL_CAMERA |
                        ScriptBaseClass.PERMISSION_ATTACH;

                if ((perm & (~implicitPerms)) == 0) // Requested only implicit perms
                {
                    m_host.TaskInventory[invItemID].PermsGranter=agentID;
                    m_host.TaskInventory[invItemID].PermsMask=perm;

                    m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                            "run_time_permissions", new Object[] {
                            new LSL_Types.LSLInteger(perm) },
                            new DetectParams[0]));

                    return;
                }
            }
            else if (m_host.SitTargetAvatar == agentID) // Sitting avatar
            {
                // When agent is sitting, certain permissions are implicit if requested from sitting agent
                int implicitPerms = ScriptBaseClass.PERMISSION_TRIGGER_ANIMATION |
                        ScriptBaseClass.PERMISSION_CONTROL_CAMERA |
                        ScriptBaseClass.PERMISSION_TRACK_CAMERA;

                if ((perm & (~implicitPerms)) == 0) // Requested only implicit perms
                {
                    m_host.TaskInventory[invItemID].PermsGranter=agentID;
                    m_host.TaskInventory[invItemID].PermsMask=perm;

                    m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                            "run_time_permissions", new Object[] {
                            new LSL_Types.LSLInteger(perm) },
                            new DetectParams[0]));

                    return;
                }
            }

            ScenePresence presence = World.GetScenePresence(agentID);

            if (presence != null)
            {
                string ownerName=resolveName(m_host.ParentGroup.RootPart.OwnerID);
                if (ownerName == String.Empty)
                    ownerName="(hippos)";

                if (!m_waitingForScriptAnswer)
                {
                    m_host.TaskInventory[invItemID].PermsGranter=agentID;
                    m_host.TaskInventory[invItemID].PermsMask=0;
                    presence.ControllingClient.OnScriptAnswer+=handleScriptAnswer;
                    m_waitingForScriptAnswer=true;
                }

                presence.ControllingClient.SendScriptQuestion(m_host.UUID, m_host.ParentGroup.RootPart.Name, ownerName, invItemID, perm);
                return;
            }

            // Requested agent is not in range, refuse perms
            m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                    "run_time_permissions", new Object[] {
                    new LSL_Types.LSLInteger(0) },
                    new DetectParams[0]));
        }

        void handleScriptAnswer(IClientAPI client, LLUUID taskID, LLUUID itemID, int answer)
        {
            if (taskID != m_host.UUID)
                return;

            LLUUID invItemID=InventorySelf();

            if (invItemID == LLUUID.Zero)
                return;

            client.OnScriptAnswer-=handleScriptAnswer;
            m_waitingForScriptAnswer=false;

            m_host.TaskInventory[invItemID].PermsMask=answer;
            m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                    "run_time_permissions", new Object[] {
                    new LSL_Types.LSLInteger(answer) },
                    new DetectParams[0]));
        }

        public string llGetPermissionsKey()
        {
            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 10 && item.ItemID == m_itemID)
                {
                    return item.PermsGranter.ToString();
                }
            }

            return LLUUID.Zero.ToString();
        }

        public LSL_Types.LSLInteger llGetPermissions()
        {
            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 10 && item.ItemID == m_itemID)
                {
                    return item.PermsMask;
                }
            }

            return 0;
        }

        public LSL_Types.LSLInteger llGetLinkNumber()
        {
            m_host.AddScriptLPS(1);

            if (m_host.ParentGroup.Children.Count > 1)
            {
                return m_host.LinkNum;
            }
            else
            {
                return 0;
            }
        }

        public void llSetLinkColor(int linknumber, LSL_Types.Vector3 color, int face)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknumber);
            if (linknumber > -1)
            {
                LLObject.TextureEntry tex = part.Shape.Textures;
                LLColor texcolor;
                if (face > -1)
                {
                    texcolor = tex.CreateFace((uint)face).RGBA;
                    texcolor.R = (float)Math.Abs(color.x - 1);
                    texcolor.G = (float)Math.Abs(color.y - 1);
                    texcolor.B = (float)Math.Abs(color.z - 1);
                    tex.FaceTextures[face].RGBA = texcolor;
                    part.UpdateTexture(tex);
                    return;
                }
                else if (face == -1)
                {
                    texcolor = tex.DefaultTexture.RGBA;
                    texcolor.R = (float)Math.Abs(color.x - 1);
                    texcolor.G = (float)Math.Abs(color.y - 1);
                    texcolor.B = (float)Math.Abs(color.z - 1);
                    tex.DefaultTexture.RGBA = texcolor;
                    for (uint i = 0; i < 32; i++)
                    {
                        if (tex.FaceTextures[i] != null)
                        {
                            texcolor = tex.FaceTextures[i].RGBA;
                            texcolor.R = (float)Math.Abs(color.x - 1);
                            texcolor.G = (float)Math.Abs(color.y - 1);
                            texcolor.B = (float)Math.Abs(color.z - 1);
                            tex.FaceTextures[i].RGBA = texcolor;
                        }
                    }
                    texcolor = tex.DefaultTexture.RGBA;
                    texcolor.R = (float)Math.Abs(color.x - 1);
                    texcolor.G = (float)Math.Abs(color.y - 1);
                    texcolor.B = (float)Math.Abs(color.z - 1);
                    tex.DefaultTexture.RGBA = texcolor;
                    part.UpdateTexture(tex);
                    return;
                }
                return;
            }
            else if (linknumber == -1)
            {
                int num = m_host.ParentGroup.PrimCount;
                for (int w = 0; w < num; w++)
                {
                    linknumber = w;
                    part = m_host.ParentGroup.GetLinkNumPart(linknumber);
                    LLObject.TextureEntry tex = part.Shape.Textures;
                    LLColor texcolor;
                    if (face > -1)
                    {
                        texcolor = tex.CreateFace((uint)face).RGBA;
                        texcolor.R = (float)Math.Abs(color.x - 1);
                        texcolor.G = (float)Math.Abs(color.y - 1);
                        texcolor.B = (float)Math.Abs(color.z - 1);
                        tex.FaceTextures[face].RGBA = texcolor;
                        part.UpdateTexture(tex);
                    }
                    else if (face == -1)
                    {
                        texcolor = tex.DefaultTexture.RGBA;
                        texcolor.R = (float)Math.Abs(color.x - 1);
                        texcolor.G = (float)Math.Abs(color.y - 1);
                        texcolor.B = (float)Math.Abs(color.z - 1);
                        tex.DefaultTexture.RGBA = texcolor;
                        for (uint i = 0; i < 32; i++)
                        {
                            if (tex.FaceTextures[i] != null)
                            {
                                texcolor = tex.FaceTextures[i].RGBA;
                                texcolor.R = (float)Math.Abs(color.x - 1);
                                texcolor.G = (float)Math.Abs(color.y - 1);
                                texcolor.B = (float)Math.Abs(color.z - 1);
                                tex.FaceTextures[i].RGBA = texcolor;
                            }
                        }
                        texcolor = tex.DefaultTexture.RGBA;
                        texcolor.R = (float)Math.Abs(color.x - 1);
                        texcolor.G = (float)Math.Abs(color.y - 1);
                        texcolor.B = (float)Math.Abs(color.z - 1);
                        tex.DefaultTexture.RGBA = texcolor;
                        part.UpdateTexture(tex);
                    }
                }
                return;
            }
        }

        public void llCreateLink(string target, int parent)
        {
            m_host.AddScriptLPS(1);
            LLUUID invItemID = InventorySelf();
            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_CHANGE_LINKS) == 0) {
              ShoutError("Script trying to link but PERMISSION_CHANGE_LINKS permission not set!");
              return;
            }
            IClientAPI client = World.GetScenePresence(m_host.TaskInventory[invItemID].PermsGranter).ControllingClient;
            SceneObjectPart targetPart = World.GetSceneObjectPart(target);
            SceneObjectGroup parentPrim = null, childPrim = null;
            if (targetPart != null)
            {
                if (parent != 0) {
                    parentPrim = m_host.ParentGroup;
                    childPrim = targetPart.ParentGroup;
                }
                else
                {
                    parentPrim = targetPart.ParentGroup;
                    childPrim = m_host.ParentGroup;
                }
                byte uf = childPrim.RootPart.UpdateFlag;
                childPrim.RootPart.UpdateFlag = 0;
                parentPrim.LinkToGroup(childPrim);
                childPrim.RootPart.UpdateFlag = uf;
            }
            parentPrim.TriggerScriptChangedEvent(Changed.LINK);
            parentPrim.RootPart.AddFlag(LLObject.ObjectFlags.CreateSelected);
            parentPrim.GetProperties(client);

            // sleep for 1 second
            System.Threading.Thread.Sleep(1000);

        }

        public void llBreakLink(int linknum)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llBreakLink");
        }

        public void llBreakAllLinks()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llBreakAllLinks");
        }

        public string llGetLinkKey(int linknum)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknum);
            if (part != null)
            {
                return part.UUID.ToString();
            }
            else
            {
                return LLUUID.Zero.ToString();
            }
        }

        public string llGetLinkName(int linknum)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknum);
            if (part != null)
            {
                return part.Name;
            }
            else
            {
                return "";
            }
        }

        public LSL_Types.LSLInteger llGetInventoryNumber(int type)
        {
            m_host.AddScriptLPS(1);
            int count = 0;
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Type == type || type == -1)
                {
                    count = count + 1;
                }
            }
            return count;
        }

        public string llGetInventoryName(int type, int number)
        {
            m_host.AddScriptLPS(1);
            ArrayList keys = new ArrayList();
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Type == type || type == -1)
                {
                    keys.Add(inv.Value.Name);
                }
            }
            if (keys.Count == 0)
            {
                return String.Empty;
            }
            keys.Sort();
            if (keys.Count > number)
            {
                return (string)keys[number];
            }
            return String.Empty;
        }

        public void llSetScriptState(string name, int run)
        {
            LLUUID item;

            m_host.AddScriptLPS(1);

            // These functions are supposed to be robust,
            // so get the state one step at a time.

            if ((item = ScriptByName(name)) != LLUUID.Zero)
            {
                m_ScriptEngine.SetScriptState(item, run == 0 ? false : true);
            }
            else
            {
                ShoutError("llSetScriptState: script "+name+" not found");
            }
        }

        public double llGetEnergy()
        {
            m_host.AddScriptLPS(1);
            // TODO: figure out real energy value
            return 1.0f;
        }

        public void llGiveInventory(string destination, string inventory)
        {
            m_host.AddScriptLPS(1);
            bool found = false;
            LLUUID destId = LLUUID.Zero;
            LLUUID objId = LLUUID.Zero;

            if (!LLUUID.TryParse(destination, out destId))
            {
                llSay(0, "Could not parse key " + destination);
                return;
            }

            // move the first object found with this inventory name
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == inventory)
                {
                    found = true;
                    objId = inv.Key;
                    break;
                }
            }

            if (!found)
            {
                llSay(0, String.Format("Could not find object '{0}'", inventory));
                throw new Exception(String.Format("The inventory object '{0}' could not be found", inventory));
            }

            // check if destination is an avatar
            if (World.GetScenePresence(destId) != null)
            {
                // destination is an avatar
                World.MoveTaskInventoryItem(destId, null, m_host, objId);
            }
            else
            {
                // destination is an object
                World.MoveTaskInventoryItem(destId, m_host, objId);
            }
        }

        public void llRemoveInventory(string item)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRemoveInventory");
        }

        public void llSetText(string text, LSL_Types.Vector3 color, double alpha)
        {
            m_host.AddScriptLPS(1);
            Vector3 av3 = new Vector3((float)color.x, (float)color.y, (float)color.z);
            m_host.SetText(text, av3, alpha);
        }

        public double llWater(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            return World.RegionInfo.RegionSettings.WaterHeight;
        }

        public void llPassTouches(int pass)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llPassTouches");
        }

        public string llRequestAgentData(string id, int data)
        {
            m_host.AddScriptLPS(1);

            UserProfileData userProfile =
                    World.CommsManager.UserService.GetUserProfile(id);

            UserAgentData userAgent =
                    World.CommsManager.UserService.GetAgentByUUID(id);

            if (userProfile == null || userAgent == null)
                return LLUUID.Zero.ToString();

            string reply = String.Empty;

            switch (data)
            {
            case 1: // DATA_ONLINE (0|1)
                // TODO: implement fetching of this information
                if (userProfile.CurrentAgent.AgentOnline)
                    reply = "1";
                else
                    reply = "0";
                break;
            case 2: // DATA_NAME (First Last)
                reply = userProfile.FirstName + " " + userProfile.SurName;
                break;
            case 3: // DATA_BORN (YYYY-MM-DD)
                DateTime born = new DateTime(1970, 1, 1, 0, 0, 0, 0);
                born = born.AddSeconds(userProfile.Created);
                reply = born.ToString("yyyy-MM-dd");
                break;
            case 4: // DATA_RATING (0,0,0,0,0,0)
                reply = "0,0,0,0,0,0";
                break;
            case 8: // DATA_PAYINFO (0|1|2|3)
                reply = "0";
                break;
            default:
                return LLUUID.Zero.ToString(); // Raise no event
            }

            LLUUID rq = LLUUID.Random();

            LLUUID tid = AsyncCommands.
                DataserverPlugin.RegisterRequest(m_localID,
                                             m_itemID, rq.ToString());

            AsyncCommands.
            DataserverPlugin.DataserverReply(rq.ToString(), reply);

            return tid.ToString();
        }

        public string llRequestInventoryData(string name)
        {
            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 3 && item.Name == name)
                {
                    LLUUID tid = AsyncCommands.
                        DataserverPlugin.RegisterRequest(m_localID,
                                                     m_itemID, item.AssetID.ToString());

                    LLVector3 region = new LLVector3(
                        World.RegionInfo.RegionLocX * Constants.RegionSize,
                        World.RegionInfo.RegionLocY * Constants.RegionSize,
                        0);

                    World.AssetCache.GetAsset(item.AssetID,
                        delegate(LLUUID i, AssetBase a)
                        {
                            AssetLandmark lm = new AssetLandmark(a);

                            float rx = (uint)(lm.RegionHandle >> 32);
                            float ry = (uint)lm.RegionHandle;
                            region = lm.Position + new LLVector3(rx, ry, 0) - region;

                            string reply = region.ToString();
                            AsyncCommands.
                                DataserverPlugin.DataserverReply(i.ToString(),
                                                             reply);
                        }, false);

                    return tid.ToString();
                }
            }

            return String.Empty;
        }

        public void llSetDamage(double damage)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetDamage");
        }

        public void llTeleportAgentHome(string agent)
        {
            m_host.AddScriptLPS(1);
            LLUUID agentId = new LLUUID();
            if (LLUUID.TryParse(agent, out agentId))
            {
                ScenePresence presence = World.GetScenePresence(agentId);
                if (presence != null)
                {
                    // agent must be over the owners land
                    if (m_host.OwnerID == World.GetLandOwner(presence.AbsolutePosition.X, presence.AbsolutePosition.Y))
                        World.TeleportClientHome(agentId, presence.ControllingClient);
                }
            }
        }

        public void llModifyLand(int action, int brush)
        {
            m_host.AddScriptLPS(1);
            World.ExternalChecks.ExternalChecksCanTerraformLand(m_host.OwnerID, new LLVector3(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y, 0));
        }

        public void llCollisionSound(string impact_sound, double impact_volume)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llCollisionSound");
        }

        public void llCollisionSprite(string impact_sprite)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llCollisionSprite");
        }

        public string llGetAnimation(string id)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetAnimation");
            return String.Empty;
        }

        public void llResetScript()
        {
            m_host.AddScriptLPS(1);
            m_ScriptEngine.ApiResetScript(m_itemID);
            throw new EventAbortException();
        }

        public void llMessageLinked(int linknum, int num, string msg, string id)
        {

            m_host.AddScriptLPS(1);

            // uint partLocalID;
            LLUUID partItemID;

            switch ((int)linknum)
            {

                case (int)ScriptBaseClass.LINK_ROOT:

                    SceneObjectPart part = m_host.ParentGroup.RootPart;

                    foreach (TaskInventoryItem item in part.TaskInventory.Values)
                    {
                        if (item.Type == 10)
                        {
                            // partLocalID = part.LocalId;
                            partItemID = item.ItemID;

                            object[] resobj = new object[]
                            {
                                new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                            };

                            m_ScriptEngine.PostScriptEvent(partItemID,
                                    new EventParams("link_message",
                                    resobj, new DetectParams[0]));
                        }
                    }

                    break;

                case (int)ScriptBaseClass.LINK_SET:

                    foreach (SceneObjectPart partInst in m_host.ParentGroup.GetParts())
                    {

                        foreach (TaskInventoryItem item in partInst.TaskInventory.Values)
                        {
                            if (item.Type == 10)
                            {
                                // partLocalID = partInst.LocalId;
                                partItemID = item.ItemID;
                                Object[] resobj = new object[]
                                {
                                    new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                                };

                                m_ScriptEngine.PostScriptEvent(partItemID,
                                        new EventParams("link_message",
                                        resobj, new DetectParams[0]));
                            }
                        }
                    }

                    break;

                case (int)ScriptBaseClass.LINK_ALL_OTHERS:

                    foreach (SceneObjectPart partInst in m_host.ParentGroup.GetParts())
                    {

                        if (partInst.LocalId != m_host.LocalId)
                        {

                            foreach (TaskInventoryItem item in partInst.TaskInventory.Values)
                            {
                                if (item.Type == 10)
                                {
                                    // partLocalID = partInst.LocalId;
                                    partItemID = item.ItemID;
                                    Object[] resobj = new object[]
                                    {
                                        new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                                    };

                                    m_ScriptEngine.PostScriptEvent(partItemID,
                                            new EventParams("link_message",
                                            resobj, new DetectParams[0]));
                                }
                            }

                        }
                    }

                    break;

                case (int)ScriptBaseClass.LINK_ALL_CHILDREN:

                    foreach (SceneObjectPart partInst in m_host.ParentGroup.GetParts())
                    {

                        if (partInst.LocalId != m_host.ParentGroup.RootPart.LocalId)
                        {

                            foreach (TaskInventoryItem item in partInst.TaskInventory.Values)
                            {
                                if (item.Type == 10)
                                {
                                    // partLocalID = partInst.LocalId;
                                    partItemID = item.ItemID;
                                    Object[] resobj = new object[]
                                    {
                                        new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                                    };

                                    m_ScriptEngine.PostScriptEvent(partItemID,
                                            new EventParams("link_message",
                                            resobj, new DetectParams[0]));
                                }
                            }

                        }
                    }

                    break;

                case (int)ScriptBaseClass.LINK_THIS:

                    foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
                    {
                        if (item.Type == 10)
                        {
                            partItemID = item.ItemID;

                            object[] resobj = new object[]
                            {
                                new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                            };

                            m_ScriptEngine.PostScriptEvent(partItemID,
                                    new EventParams("link_message",
                                    resobj, new DetectParams[0]));
                        }
                    }

                    break;

                default:

                    foreach (SceneObjectPart partInst in m_host.ParentGroup.GetParts())
                    {

                        if ((partInst.LinkNum) == linknum)
                        {

                            foreach (TaskInventoryItem item in partInst.TaskInventory.Values)
                            {
                                if (item.Type == 10)
                                {
                                    // partLocalID = partInst.LocalId;
                                    partItemID = item.ItemID;
                                    Object[] resObjDef = new object[]
                                    {
                                        new LSL_Types.LSLInteger(m_host.LinkNum), new LSL_Types.LSLInteger(num), new LSL_Types.LSLString(msg), new LSL_Types.LSLString(id)
                                    };

                                    m_ScriptEngine.PostScriptEvent(partItemID,
                                            new EventParams("link_message",
                                            resObjDef, new DetectParams[0]));
                                }
                            }

                        }
                    }

                    break;

            }

        }

        public void llPushObject(string target, LSL_Types.Vector3 impulse, LSL_Types.Vector3 ang_impulse, int local)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart targ = World.GetSceneObjectPart(target);
            if (targ == null)
                return;
            targ.ApplyImpulse(new LLVector3((float)impulse.x, (float)impulse.y, (float)impulse.z), local != 0);
        }

        public void llPassCollisions(int pass)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llPassCollisions");
        }

        public string llGetScriptName()
        {

            string result = String.Empty;

            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 10 && item.ItemID == m_itemID)
                {
                    result =  item.Name!=null?item.Name:String.Empty;
                    break;
                }
            }

            return result;

        }

        public LSL_Types.LSLInteger llGetNumberOfSides()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetNumberOfSides");
            return 0;
        }


        /* The new / changed functions were tested with the following LSL script:

        default
        {
            state_entry()
            {
                rotation rot = llEuler2Rot(<0,70,0> * DEG_TO_RAD);

                llOwnerSay("to get here, we rotate over: "+ (string) llRot2Axis(rot));
                llOwnerSay("and we rotate for: "+ (llRot2Angle(rot) * RAD_TO_DEG));

                // convert back and forth between quaternion <-> vector and angle

                rotation newrot = llAxisAngle2Rot(llRot2Axis(rot),llRot2Angle(rot));

                llOwnerSay("Old rotation was: "+(string) rot);
                llOwnerSay("re-converted rotation is: "+(string) newrot);

                llSetRot(rot);  // to check the parameters in the prim
            }
        }
        */



        // Xantor 29/apr/2008
        // Returns rotation described by rotating angle radians about axis.
        // q = cos(a/2) + i (x * sin(a/2)) + j (y * sin(a/2)) + k (z * sin(a/2))
        public LSL_Types.Quaternion llAxisAngle2Rot(LSL_Types.Vector3 axis, double angle)
        {
            m_host.AddScriptLPS(1);

            double x, y, z, s, t;

            s = Math.Cos(angle / 2);
            t = Math.Sin(angle / 2); // temp value to avoid 2 more sin() calcs
            x = axis.x * t;
            y = axis.y * t;
            z = axis.z * t;

            return new LSL_Types.Quaternion(x,y,z,s);
        }


        // Xantor 29/apr/2008
        // converts a Quaternion to X,Y,Z axis rotations
        public LSL_Types.Vector3 llRot2Axis(LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);
            double x,y,z;

            if (rot.s > 1) // normalization needed
            {
                double length = Math.Sqrt(rot.x * rot.x + rot.y * rot.y +
                        rot.z * rot.z + rot.s * rot.s);

                rot.x /= length;
                rot.y /= length;
                rot.z /= length;
                rot.s /= length;

            }

            // double angle = 2 * Math.Acos(rot.s);
            double s = Math.Sqrt(1 - rot.s * rot.s);
            if (s < 0.001)
            {
                x = 1;
                y = z = 0;
            }
            else
            {
                x = rot.x / s; // normalise axis
                y = rot.y / s;
                z = rot.z / s;
            }


            return new LSL_Types.Vector3(x,y,z);


//            NotImplemented("llRot2Axis");
        }


        // Returns the angle of a quaternion (see llRot2Axis for the axis)
        public double llRot2Angle(LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);

            if (rot.s > 1) // normalization needed
            {
                double length = Math.Sqrt(rot.x * rot.x + rot.y * rot.y +
                        rot.z * rot.z + rot.s * rot.s);

                rot.x /= length;
                rot.y /= length;
                rot.z /= length;
                rot.s /= length;

            }

            double angle = 2 * Math.Acos(rot.s);

            return angle;

//            NotImplemented("llRot2Angle");
        }

        public double llAcos(double val)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Acos(val);
        }

        public double llAsin(double val)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Asin(val);
        }

        // Xantor 30/apr/2008
        public double llAngleBetween(LSL_Types.Quaternion a, LSL_Types.Quaternion b)
        {
            m_host.AddScriptLPS(1);

           return (double) Math.Acos(a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s) * 2;
        }

        public string llGetInventoryKey(string name)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == name)
                {
                    if ((inv.Value.CurrentPermissions & (uint)(PermissionMask.Copy | PermissionMask.Transfer | PermissionMask.Modify)) == (uint)(PermissionMask.Copy | PermissionMask.Transfer | PermissionMask.Modify))
                    {
                        return inv.Value.AssetID.ToString();
                    }
                    else
                    {
                        return LLUUID.Zero.ToString();
                    }
                }
            }
            return LLUUID.Zero.ToString();
        }

        public void llAllowInventoryDrop(int add)
        {
            m_host.AddScriptLPS(1);

            if (add != 0)
                m_host.ParentGroup.RootPart.AllowedDrop = true;
            else
                m_host.ParentGroup.RootPart.AllowedDrop = false;
        }

        public LSL_Types.Vector3 llGetSunDirection()
        {
            m_host.AddScriptLPS(1);

            LSL_Types.Vector3 SunDoubleVector3;
            LLVector3 SunFloatVector3;

            // sunPosition estate setting is set in OpenSim.Region.Environment.Modules.SunModule
            // have to convert from LLVector3 (float) to LSL_Types.Vector3 (double)
            SunFloatVector3 = World.RegionInfo.RegionSettings.SunVector;
            SunDoubleVector3.x = (double)SunFloatVector3.X;
            SunDoubleVector3.y = (double)SunFloatVector3.Y;
            SunDoubleVector3.z = (double)SunFloatVector3.Z;

            return SunDoubleVector3;
        }

        public LSL_Types.Vector3 llGetTextureOffset(int face)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            LSL_Types.Vector3 offset;
            if (face == -1)
            {
                face = 0;
            }
            offset.x = tex.GetFace((uint)face).OffsetU;
            offset.y = tex.GetFace((uint)face).OffsetV;
            offset.z = 0.0;
            return offset;
        }

        public LSL_Types.Vector3 llGetTextureScale(int side)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            LSL_Types.Vector3 scale;
            if (side == -1)
            {
                side = 0;
            }
            scale.x = tex.GetFace((uint)side).RepeatU;
            scale.y = tex.GetFace((uint)side).RepeatV;
            scale.z = 0.0;
            return scale;
        }

        public double llGetTextureRot(int face)
        {
            m_host.AddScriptLPS(1);
            LLObject.TextureEntry tex = m_host.Shape.Textures;
            if (face == -1)
            {
                face = 0;
            }
            return tex.GetFace((uint)face).Rotation;
        }

        public LSL_Types.LSLInteger llSubStringIndex(string source, string pattern)
        {
            m_host.AddScriptLPS(1);
            return source.IndexOf(pattern);
        }

        public string llGetOwnerKey(string id)
        {
            m_host.AddScriptLPS(1);
            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id, out key))
            {
                return World.GetSceneObjectPart(World.Entities[key].LocalId).OwnerID.ToString();
            }
            else
            {
                return LLUUID.Zero.ToString();
            }
        }

        public LSL_Types.Vector3 llGetCenterOfMass()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetCenterOfMass");
            return new LSL_Types.Vector3();
        }

        public LSL_Types.list llListSort(LSL_Types.list src, int stride, int ascending)
        {
            m_host.AddScriptLPS(1);

            if (stride <= 0)
            {
                stride = 1;
            }
            return src.Sort(stride, ascending);
        }

        public LSL_Types.LSLInteger llGetListLength(LSL_Types.list src)
        {
            m_host.AddScriptLPS(1);

            if (src == null)
            {
                return 0;
            }
            else
            {
                return src.Length;
            }
        }

        public LSL_Types.LSLInteger llList2Integer(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return 0;
            }
            try
            {
                if (src.Data[index] is LSL_Types.LSLInteger)
                    return Convert.ToInt32(((LSL_Types.LSLInteger) src.Data[index]).value);
                else if (src.Data[index] is LSL_Types.LSLFloat)
                    return Convert.ToInt32(((LSL_Types.LSLFloat) src.Data[index]).value);
                else if (src.Data[index] is LSL_Types.LSLString)
                    return Convert.ToInt32(((LSL_Types.LSLString) src.Data[index]).m_string);
                return Convert.ToInt32(src.Data[index]);
            }
            catch (FormatException)
            {
                return 0;
            }
        }

        public double osList2Double(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return 0.0;
            }
            if (src.Data[index] is LSL_Types.LSLInteger)
                return Convert.ToDouble(((LSL_Types.LSLInteger) src.Data[index]).value);
            else if (src.Data[index] is LSL_Types.LSLFloat)
                return Convert.ToDouble(((LSL_Types.LSLFloat) src.Data[index]).value);
            else if (src.Data[index] is LSL_Types.LSLString)
                return Convert.ToDouble(((LSL_Types.LSLString) src.Data[index]).m_string);
            return Convert.ToDouble(src.Data[index]);
        }

        public double llList2Float(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return 0.0;
            }
            try
            {
                if (src.Data[index] is LSL_Types.LSLInteger)
                    return Convert.ToDouble(((LSL_Types.LSLInteger) src.Data[index]).value);
                else if (src.Data[index] is LSL_Types.LSLFloat)
                    return Convert.ToDouble(((LSL_Types.LSLFloat) src.Data[index]).value);
                else if (src.Data[index] is LSL_Types.LSLString)
                    return Convert.ToDouble(((LSL_Types.LSLString) src.Data[index]).m_string);
                return Convert.ToDouble(src.Data[index]);
            }
            catch (FormatException)
            {
                return 0.0;
            }
        }

        public string llList2String(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return String.Empty;
            }
            return src.Data[index].ToString();
        }

        public string llList2Key(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return "";
            }
            return src.Data[index].ToString();
        }

        public LSL_Types.Vector3 llList2Vector(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return new LSL_Types.Vector3(0, 0, 0);
            }
            if (src.Data[index].GetType() == typeof(LSL_Types.Vector3))
            {
                return (LSL_Types.Vector3)src.Data[index];
            }
            else
            {
                return new LSL_Types.Vector3(src.Data[index].ToString());
            }
        }

        public LSL_Types.Quaternion llList2Rot(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return new LSL_Types.Quaternion(0, 0, 0, 1);
            }
            if (src.Data[index].GetType() == typeof(LSL_Types.Quaternion))
            {
                return (LSL_Types.Quaternion)src.Data[index];
            }
            else
            {
                return new LSL_Types.Quaternion(src.Data[index].ToString());
            }
        }

        public LSL_Types.list llList2List(LSL_Types.list src, int start, int end)
        {
            m_host.AddScriptLPS(1);
            return src.GetSublist(start, end);
        }

        public LSL_Types.list llDeleteSubList(LSL_Types.list src, int start, int end)
        {
            return src.DeleteSublist(end, start);
        }

        public LSL_Types.LSLInteger llGetListEntryType(LSL_Types.list src, int index)
        {
            m_host.AddScriptLPS(1);
            if (index < 0)
            {
                index = src.Length + index;
            }
            if (index >= src.Length)
            {
                return 0;
            }

            if (src.Data[index] is Int32)
                return 1;
            if (src.Data[index] is Double)
                return 2;
            if (src.Data[index] is String)
            {
                LLUUID tuuid;
                if (LLUUID.TryParse(src.Data[index].ToString(), out tuuid))
                {
                    return 3;
                }
                else
                {
                    return 4;
                }
            }
            if (src.Data[index] is LSL_Types.Vector3)
                return 5;
            if (src.Data[index] is LSL_Types.Quaternion)
                return 6;
            if (src.Data[index] is LSL_Types.list)
                return 7;
            return 0;

        }

        /// <summary>
        /// Process the supplied list and return the
        /// content of the list formatted as a comma
        /// separated list. There is a space after
        /// each comma.
        /// </summary>

        public string llList2CSV(LSL_Types.list src)
        {

            string ret = String.Empty;
            int    x   = 0;

            m_host.AddScriptLPS(1);

            if (src.Data.Length > 0)
            {
                ret = src.Data[x++].ToString();
                for (; x < src.Data.Length; x++)
                {
                    ret += ", "+src.Data[x].ToString();
                }
            }

            return ret;
        }

        /// <summary>
        /// The supplied string is scanned for commas
        /// and converted into a list. Commas are only
        /// effective if they are encountered outside
        /// of '<' '>' delimiters. Any whitespace
        /// before or after an element is trimmed.
        /// </summary>

        public LSL_Types.list llCSV2List(string src)
        {

            LSL_Types.list result = new LSL_Types.list();
            int parens = 0;
            int start  = 0;
            int length = 0;

            m_host.AddScriptLPS(1);

            for (int i = 0; i < src.Length; i++)
            {
                switch (src[i])
                {
                    case '<':
                        parens++;
                        length++;
                        break;
                    case '>':
                        if (parens > 0)
                            parens--;
                        length++;
                        break;
                    case ',':
                        if (parens == 0)
                        {
                            result.Add(src.Substring(start,length).Trim());
                            start += length+1;
                            length = 0;
                        }
                        else
                        {
                            length++;
                        }
                        break;
                    default:
                        length++;
                        break;
                }
            }

            result.Add(src.Substring(start,length).Trim());

            return result;
        }

        ///  <summary>
        ///  Randomizes the list, be arbitrarily reordering
        ///  sublists of stride elements. As the stride approaches
        ///  the size of the list, the options become very
        ///  limited.
        ///  </summary>
        ///  <remarks>
        ///  This could take a while for very large list
        ///  sizes.
        ///  </remarks>

        public LSL_Types.list llListRandomize(LSL_Types.list src, int stride)
        {
            LSL_Types.list result;
            Random rand           = new Random();

            int   chunkk;
            int[] chunks;

            m_host.AddScriptLPS(1);

            if (stride <= 0)
            {
                stride = 1;
            }

            // Stride MUST be a factor of the list length
            // If not, then return the src list. This also
            // traps those cases where stride > length.

            if (src.Length != stride && src.Length%stride == 0)
            {
                chunkk = src.Length/stride;

                chunks = new int[chunkk];

                for (int i = 0; i < chunkk; i++)
                    chunks[i] = i;

                // Knuth shuffle the chunkk index
                for (int i = chunkk-1; i >= 1; i--)
                {
                    // Elect an unrandomized chunk to swap
                    int index = rand.Next(i+1);
                    int tmp;

                    // and swap position with first unrandomized chunk
                    tmp = chunks[i];
                    chunks[i] = chunks[index];
                    chunks[index] = tmp;
                }

                // Construct the randomized list

                result = new LSL_Types.list();

                for (int i = 0; i < chunkk; i++)
                {
                    for (int j = 0; j < stride; j++)
                    {
                        result.Add(src.Data[chunks[i]*stride+j]);
                    }
                }
            }
            else {
                object[] array = new object[src.Length];
                Array.Copy(src.Data, 0, array, 0, src.Length);
                result = new LSL_Types.list(array);
            }

            return result;
        }

        /// <summary>
        /// Elements in the source list starting with 0 and then
        /// every i+stride. If the stride is negative then the scan
        /// is backwards producing an inverted result.
        /// Only those elements that are also in the specified
        /// range are included in the result.
        /// </summary>

        public LSL_Types.list llList2ListStrided(LSL_Types.list src, int start, int end, int stride)
        {

            LSL_Types.list result = new LSL_Types.list();
            int[] si = new int[2];
            int[] ei = new int[2];
            bool twopass = false;

            m_host.AddScriptLPS(1);

            //  First step is always to deal with negative indices

            if (start < 0)
                start = src.Length+start;
            if (end   < 0)
                end   = src.Length+end;

            //  Out of bounds indices are OK, just trim them
            //  accordingly

            if (start > src.Length)
                start = src.Length;

            if (end > src.Length)
                end = src.Length;

            //  There may be one or two ranges to be considered

            if (start != end)
            {

                if (start <= end)
                {
                   si[0] = start;
                   ei[0] = end;
                }
                else
                {
                   si[1] = start;
                   ei[1] = src.Length;
                   si[0] = 0;
                   ei[0] = end;
                   twopass = true;
                }

                //  The scan always starts from the beginning of the
                //  source list, but members are only selected if they
                //  fall within the specified sub-range. The specified
                //  range values are inclusive.
                //  A negative stride reverses the direction of the
                //  scan producing an inverted list as a result.

                if (stride == 0)
                    stride = 1;

                if (stride > 0)
                {
                    for (int i = 0; i < src.Length; i += stride)
                    {
                        if (i<=ei[0] && i>=si[0])
                            result.Add(src.Data[i]);
                        if (twopass && i>=si[1] && i<=ei[1])
                            result.Add(src.Data[i]);
                    }
                }
                else if (stride < 0)
                {
                    for (int i = src.Length - 1; i >= 0; i += stride)
                    {
                        if (i <= ei[0] && i >= si[0])
                            result.Add(src.Data[i]);
                        if (twopass && i >= si[1] && i <= ei[1])
                            result.Add(src.Data[i]);
                    }
                }
            }

            return result;
        }

        public LSL_Types.Vector3 llGetRegionCorner()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(World.RegionInfo.RegionLocX * Constants.RegionSize, World.RegionInfo.RegionLocY * Constants.RegionSize, 0);
        }

        /// <summary>
        /// Insert the list identified by <src> into the
        /// list designated by <dest> such that the first
        /// new element has the index specified by <index>
        /// </summary>

        public LSL_Types.list llListInsertList(LSL_Types.list dest, LSL_Types.list src, int index)
        {

            LSL_Types.list pref = null;
            LSL_Types.list suff = null;

            m_host.AddScriptLPS(1);

            if (index < 0)
            {
                index = index+dest.Length;
                if (index < 0)
                {
                    index = 0;
                }
            }

            if (index != 0)
            {
                pref = dest.GetSublist(0,index-1);
                if (index < dest.Length)
                {
                    suff = dest.GetSublist(index,-1);
                    return pref + src + suff;
                }
                else
                {
                    return pref + src;
                }
            }
            else
            {
                if (index < dest.Length)
                {
                    suff = dest.GetSublist(index,-1);
                    return src + suff;
                }
                else
                {
                    return src;
                }
            }

        }

        /// <summary>
        /// Returns the index of the first occurrence of test
        /// in src.
        /// </summary>

        public LSL_Types.LSLInteger llListFindList(LSL_Types.list src, LSL_Types.list test)
        {

            int index  = -1;
            int length = src.Length - test.Length + 1;

            m_host.AddScriptLPS(1);

            // If either list is empty, do not match

            if (src.Length != 0 && test.Length != 0)
            {
                for (int i = 0; i < length; i++)
                {
                   if (src.Data[i].Equals(test.Data[0]))
                   {
                       int j;
                       for (j = 1; j < test.Length; j++)
                           if (!src.Data[i+j].Equals(test.Data[j]))
                               break;
                       if (j == test.Length)
                       {
                           index = i;
                           break;
                       }
                   }
                }
            }

            return index;

        }

        public string llGetObjectName()
        {
            m_host.AddScriptLPS(1);
            return m_host.Name!=null?m_host.Name:String.Empty;
        }

        public void llSetObjectName(string name)
        {
            m_host.AddScriptLPS(1);
            m_host.Name = name!=null?name:String.Empty;
        }

        public string llGetDate()
        {
            m_host.AddScriptLPS(1);
            DateTime date = DateTime.Now.ToUniversalTime();
            string result = date.ToString("yyyy-MM-dd");
            return result;
        }

        public LSL_Types.LSLInteger llEdgeOfWorld(LSL_Types.Vector3 pos, LSL_Types.Vector3 dir)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llEdgeOfWorld");
            return 0;
        }

        public LSL_Types.LSLInteger llGetAgentInfo(string id)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetAgentInfo");
            return 0;
        }

        public void llAdjustSoundVolume(double volume)
        {
            m_host.AddScriptLPS(1);
            m_host.AdjustSoundGain(volume);
        }

        public void llSetSoundQueueing(int queue)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetSoundQueueing");
        }

        public void llSetSoundRadius(double radius)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetSoundRadius");
        }

        public string llKey2Name(string id)
        {
            m_host.AddScriptLPS(1);
            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id,out key))
            {
                ScenePresence presence = World.GetScenePresence(key);

                if (presence != null)
                {
                    return presence.ControllingClient.Name;
                    //return presence.Name;
                }

                if (World.GetSceneObjectPart(key) != null)
                {
                    return World.GetSceneObjectPart(key).Name;
                }
            }
            return String.Empty;
        }



        public void llSetTextureAnim(int mode, int face, int sizex, int sizey, double start, double length, double rate)
        {
            m_host.AddScriptLPS(1);
            Primitive.TextureAnimation pTexAnim = new Primitive.TextureAnimation();
            pTexAnim.Flags =(uint) mode;

            //ALL_SIDES
            if (face == -1)
                    face = 255;

            pTexAnim.Face = (uint)face;
            pTexAnim.Length = (float)length;
            pTexAnim.Rate = (float)rate;
            pTexAnim.SizeX = (uint)sizex;
            pTexAnim.SizeY = (uint)sizey;
            pTexAnim.Start = (float)start;

            m_host.AddTextureAnimation(pTexAnim);
            m_host.SendFullUpdateToAllClients();
        }

        public void llTriggerSoundLimited(string sound, double volume, LSL_Types.Vector3 top_north_east,
                                          LSL_Types.Vector3 bottom_south_west)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llTriggerSoundLimited");
        }

        public void llEjectFromLand(string pest)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llEjectFromLand");
        }

        public LSL_Types.list llParseString2List(string str, LSL_Types.list separators, LSL_Types.list spacers)
        {
            m_host.AddScriptLPS(1);
            LSL_Types.list ret = new LSL_Types.list();
            object[] delimiters = new object[separators.Length + spacers.Length];
            separators.Data.CopyTo(delimiters, 0);
            spacers.Data.CopyTo(delimiters, separators.Length);
            bool dfound = false;
            do
            {
                dfound = false;
                int cindex = -1;
                string cdeli = "";
                for (int i = 0; i < delimiters.Length; i++)
                {
                    int index = str.IndexOf(delimiters[i].ToString());
                    bool found = index != -1;
                    if (found)
                    {
                        if ((cindex > index) || (cindex == -1))
                        {
                            cindex = index;
                            cdeli = (string)delimiters[i];
                        }
                        dfound = dfound || found;
                    }
                }
                if (cindex != -1)
                {
                    if (cindex > 0)
                    {
                        ret.Add(str.Substring(0, cindex));
                        if (spacers.Contains(cdeli))
                        {
                            ret.Add(cdeli);
                        }
                    }
                    if (cindex == 0 && spacers.Contains(cdeli))
                    {
                        ret.Add(cdeli);
                    }
                    str = str.Substring(cindex + cdeli.Length);
                }
            } while (dfound);
            if (str != "")
            {
                ret.Add(str);
            }
            return ret;
        }

        public LSL_Types.LSLInteger llOverMyLand(string id)
        {
            m_host.AddScriptLPS(1);
            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id,out key))
            {
                ScenePresence presence = World.GetScenePresence(key);
                if (presence != null) // object is an avatar
                {
                    if (m_host.OwnerID == World.GetLandOwner(presence.AbsolutePosition.X, presence.AbsolutePosition.Y))
                        return 1;
                }
                else // object is not an avatar
                {
                    SceneObjectPart obj = World.GetSceneObjectPart(key);
                    if (obj != null)
                        if (m_host.OwnerID == World.GetLandOwner(obj.AbsolutePosition.X, obj.AbsolutePosition.Y))
                            return 1;
                }
            }
            return 0;
        }

        public string llGetLandOwnerAt(LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);
            return World.GetLandOwner((float)pos.x, (float)pos.y).ToString();
        }

        public LSL_Types.Vector3 llGetAgentSize(string id)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetAgentSize");
            return new LSL_Types.Vector3();
        }

        public LSL_Types.LSLInteger llSameGroup(string agent)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSameGroup");
            return 0;
        }

        public void llUnSit(string id)
        {
            m_host.AddScriptLPS(1);

            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id, out key))
            {
                ScenePresence av = World.GetScenePresence(key);

                if (av != null)
                {
                    if (llAvatarOnSitTarget() == id)
                    {
                        // if the avatar is sitting on this object, then
                        // we can unsit them.  We don't want random scripts unsitting random people
                        // Lets avoid the popcorn avatar scenario.
                        av.StandUp();
                    }
                    else
                    {
                        // If the object owner also owns the parcel
                        // or
                        // if the land is group owned and the object is group owned by the same group
                        // or
                        // if the object is owned by a person with estate access.

                        ILandObject parcel = World.LandChannel.GetLandObject(av.AbsolutePosition.X, av.AbsolutePosition.Y);
                        if (parcel != null)
                        {
                            if (m_host.ObjectOwner == parcel.landData.OwnerID ||
                                (m_host.OwnerID == m_host.GroupID && m_host.GroupID == parcel.landData.GroupID
                                && parcel.landData.IsGroupOwned) || World.ExternalChecks.ExternalChecksCanBeGodLike(m_host.OwnerID))
                            {
                                av.StandUp();
                            }
                        }
                    }
                }

            }

        }

        public LSL_Types.Vector3 llGroundSlope(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGroundSlope");
            return new LSL_Types.Vector3();
        }

        public LSL_Types.Vector3 llGroundNormal(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGroundNormal");
            return new LSL_Types.Vector3();
        }

        public LSL_Types.Vector3 llGroundContour(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGroundContour");
            return new LSL_Types.Vector3();
        }

        public LSL_Types.LSLInteger llGetAttached()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetAttached");
            return 0;
        }

        public LSL_Types.LSLInteger llGetFreeMemory()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetFreeMemory");
            return 0;
        }

        public string llGetRegionName()
        {
            m_host.AddScriptLPS(1);
            return World.RegionInfo.RegionName;
        }

        public double llGetRegionTimeDilation()
        {
            m_host.AddScriptLPS(1);
            return (double)World.TimeDilation;
        }

        public double llGetRegionFPS()
        {
            m_host.AddScriptLPS(1);
            //TODO: return actual FPS
            return 10.0f;
        }

        /* particle system rules should be coming into this routine as doubles, that is
        rule[0] should be an integer from this list and rule[1] should be the arg
        for the same integer. wiki.secondlife.com has most of this mapping, but some
        came from http://www.caligari-designs.com/p4u2

        We iterate through the list for 'Count' elements, incrementing by two for each
        iteration and set the members of Primitive.ParticleSystem, one at a time.
        */

        public enum PrimitiveRule : int
        {
            PSYS_PART_FLAGS = 0,
            PSYS_PART_START_COLOR = 1,
            PSYS_PART_START_ALPHA = 2,
            PSYS_PART_END_COLOR = 3,
            PSYS_PART_END_ALPHA = 4,
            PSYS_PART_START_SCALE = 5,
            PSYS_PART_END_SCALE = 6,
            PSYS_PART_MAX_AGE = 7,
            PSYS_SRC_ACCEL = 8,
            PSYS_SRC_PATTERN = 9,
            PSYS_SRC_TEXTURE = 12,
            PSYS_SRC_BURST_RATE = 13,
            PSYS_SRC_BURST_PART_COUNT = 15,
            PSYS_SRC_BURST_RADIUS = 16,
            PSYS_SRC_BURST_SPEED_MIN = 17,
            PSYS_SRC_BURST_SPEED_MAX = 18,
            PSYS_SRC_MAX_AGE = 19,
            PSYS_SRC_TARGET_KEY = 20,
            PSYS_SRC_OMEGA = 21,
            PSYS_SRC_ANGLE_BEGIN = 22,
            PSYS_SRC_ANGLE_END = 23
        }

        internal Primitive.ParticleSystem.ParticleDataFlags ConvertUINTtoFlags(uint flags)
        {
            Primitive.ParticleSystem.ParticleDataFlags returnval = Primitive.ParticleSystem.ParticleDataFlags.None;

            return returnval;
        }

        private Primitive.ParticleSystem getNewParticleSystemWithSLDefaultValues()
        {
            Primitive.ParticleSystem ps = new Primitive.ParticleSystem();

            // TODO find out about the other defaults and add them here
            ps.PartStartColor = new LLColor(1.0f, 1.0f, 1.0f, 1.0f);
            ps.PartEndColor = new LLColor(1.0f, 1.0f, 1.0f, 1.0f);
            ps.PartStartScaleX = 1.0f;
            ps.PartStartScaleY = 1.0f;
            ps.PartEndScaleX = 1.0f;
            ps.PartEndScaleY = 1.0f;
            ps.BurstSpeedMin = 1.0f;
            ps.BurstSpeedMax = 1.0f;
            ps.BurstRate = 0.1f;
            ps.PartMaxAge = 10.0f;
            return ps;
        }

        public void llParticleSystem(LSL_Types.list rules)
        {
            m_host.AddScriptLPS(1);
            if (rules.Length == 0)
            {
                m_host.RemoveParticleSystem();
            }
            else
            {
                Primitive.ParticleSystem prules = getNewParticleSystemWithSLDefaultValues();
                LSL_Types.Vector3 tempv = new LSL_Types.Vector3();

                float tempf = 0;

                for (int i = 0; i < rules.Length; i += 2)
                {
                    switch ((int)rules.Data[i])
                    {
                        case (int)ScriptBaseClass.PSYS_PART_FLAGS:
                            prules.PartDataFlags = (Primitive.ParticleSystem.ParticleDataFlags)((uint)Convert.ToInt32(rules.Data[i + 1].ToString()));
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_START_COLOR:
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            prules.PartStartColor.R = (float)tempv.x;
                            prules.PartStartColor.G = (float)tempv.y;
                            prules.PartStartColor.B = (float)tempv.z;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_START_ALPHA:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.PartStartColor.A = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_END_COLOR:
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            //prules.PartEndColor = new LLColor(tempv.x,tempv.y,tempv.z,1);

                            prules.PartEndColor.R = (float)tempv.x;
                            prules.PartEndColor.G = (float)tempv.y;
                            prules.PartEndColor.B = (float)tempv.z;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_END_ALPHA:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.PartEndColor.A = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_START_SCALE:
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            prules.PartStartScaleX = (float)tempv.x;
                            prules.PartStartScaleY = (float)tempv.y;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_END_SCALE:
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            prules.PartEndScaleX = (float)tempv.x;
                            prules.PartEndScaleY = (float)tempv.y;
                            break;

                        case (int)ScriptBaseClass.PSYS_PART_MAX_AGE:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.PartMaxAge = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_ACCEL:
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            prules.PartAcceleration.X = (float)tempv.x;
                            prules.PartAcceleration.Y = (float)tempv.y;
                            prules.PartAcceleration.Z = (float)tempv.z;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_PATTERN:
                            int tmpi = int.Parse(rules.Data[i + 1].ToString());
                            prules.Pattern = (Primitive.ParticleSystem.SourcePattern)tmpi;
                            break;

                        // Xantor 20080503
                        // Wiki:    PSYS_SRC_TEXTURE      string      inventory item name or key of the particle texture
                        //          "" = default texture.
                        // 20080530 Updated to remove code duplication
                        case (int)ScriptBaseClass.PSYS_SRC_TEXTURE:
                            prules.Texture = KeyOrName(rules.Data[i + 1].ToString());
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_BURST_RATE:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.BurstRate = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_BURST_PART_COUNT:
                            prules.BurstPartCount = (byte)Convert.ToByte(rules.Data[i + 1].ToString());
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_BURST_RADIUS:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.BurstRadius = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_BURST_SPEED_MIN:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.BurstSpeedMin = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_BURST_SPEED_MAX:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.BurstSpeedMax = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_MAX_AGE:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.MaxAge = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_TARGET_KEY:
                            LLUUID key = LLUUID.Zero;
                            if (LLUUID.TryParse(rules.Data[i + 1].ToString(), out key))
                            {
                                prules.Target = key;
                            }
                            else
                            {
                                prules.Target = m_host.UUID;
                            }
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_OMEGA:
                            // AL: This is an assumption, since it is the only thing that would match.
                            tempv = (LSL_Types.Vector3)rules.Data[i + 1];
                            prules.AngularVelocity.X = (float)tempv.x;
                            prules.AngularVelocity.Y = (float)tempv.y;
                            prules.AngularVelocity.Z = (float)tempv.z;
                            //cast??                    prules.MaxAge = (float)rules[i + 1];
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_ANGLE_BEGIN:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.InnerAngle = (float)tempf;
                            break;

                        case (int)ScriptBaseClass.PSYS_SRC_ANGLE_END:
                            tempf = Convert.ToSingle(rules.Data[i + 1].ToString());
                            prules.OuterAngle = (float)tempf;
                            break;
                    }

                }
                prules.CRC = 1;

                m_host.AddNewParticleSystem(prules);
            }
            m_host.SendFullUpdateToAllClients();
        }

        public void llGroundRepel(double height, int water, double tau)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGroundRepel");
        }

        private LLUUID GetTaskInventoryItem(string name)
        {
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == name)
                    return inv.Key;
            }
            return LLUUID.Zero;
        }

        public void llGiveInventoryList(string destination, string category, LSL_Types.list inventory)
        {
            m_host.AddScriptLPS(1);

            LLUUID destID;
            if (!LLUUID.TryParse(destination, out destID))
                return;

            List<LLUUID> itemList = new List<LLUUID>();

            foreach (Object item in inventory.Data)
            {
                LLUUID itemID;
                if (LLUUID.TryParse(item.ToString(), out itemID))
                {
                    itemList.Add(itemID);
                }
                else
                {
                    itemID = GetTaskInventoryItem(item.ToString());
                    if (itemID != LLUUID.Zero)
                        itemList.Add(itemID);
                }
            }

            if (itemList.Count == 0)
                return;

            m_ScriptEngine.World.MoveTaskInventoryItems(destID, category, m_host, itemList);
        }

        public void llSetVehicleType(int type)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicleType");
        }

        public void llSetVehicledoubleParam(int param, double value)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicledoubleParam");
        }

        public void llSetVehicleFloatParam(int param, float value)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicleFloatParam");
        }

        public void llSetVehicleVectorParam(int param, LSL_Types.Vector3 vec)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicleVectorParam");
        }

        public void llSetVehicleRotationParam(int param, LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicleRotationParam");
        }

        public void llSetVehicleFlags(int flags)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetVehicleFlags");
        }

        public void llRemoveVehicleFlags(int flags)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRemoveVehicleFlags");
        }

        public void llSitTarget(LSL_Types.Vector3 offset, LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);
            // LSL quaternions can normalize to 0, normal Quaternions can't.
            if (rot.s == 0 && rot.x == 0 && rot.y == 0 && rot.z == 0)
                rot.z = 1; // ZERO_ROTATION = 0,0,0,1

            m_host.SitTargetPosition = new Vector3((float)offset.x, (float)offset.y, (float)offset.z);
            m_host.SitTargetOrientation = new Quaternion((float)rot.s, (float)rot.x, (float)rot.y, (float)rot.z);
        }

        public string llAvatarOnSitTarget()
        {
            m_host.AddScriptLPS(1);
            return m_host.GetAvatarOnSitTarget().ToString();
        }

        public void llAddToLandPassList(string avatar, double hours)
        {
            m_host.AddScriptLPS(1);
            LLUUID key;
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                ParcelManager.ParcelAccessEntry entry = new ParcelManager.ParcelAccessEntry();
                if (LLUUID.TryParse(avatar, out key))
                {
                    entry.AgentID = key;
                    entry.Flags = ParcelManager.AccessList.Access;
                    entry.Time = DateTime.Now.AddHours(hours);
                    land.ParcelAccessList.Add(entry);
                }
            }
        }

        public void llSetTouchText(string text)
        {
            m_host.AddScriptLPS(1);
            m_host.TouchName = text;
        }

        public void llSetSitText(string text)
        {
            m_host.AddScriptLPS(1);
            m_host.SitName = text;
        }

        public void llSetCameraEyeOffset(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            m_host.SetCameraEyeOffset(new LLVector3((float)offset.x, (float)offset.y, (float)offset.z));
        }

        public void llSetCameraAtOffset(LSL_Types.Vector3 offset)
        {
            m_host.AddScriptLPS(1);
            m_host.SetCameraAtOffset(new LLVector3((float)offset.x, (float)offset.y, (float)offset.z));
        }

        public string llDumpList2String(LSL_Types.list src, string seperator)
        {
            m_host.AddScriptLPS(1);
            if (src.Length == 0)
            {
                return String.Empty;
            }
            string ret = String.Empty;
            foreach (object o in src.Data)
            {
                ret = ret + o.ToString() + seperator;
            }
            ret = ret.Substring(0, ret.Length - seperator.Length);
            return ret;
        }

        public LSL_Types.LSLInteger llScriptDanger(LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);
            bool result = World.scriptDanger(m_host.LocalId, new LLVector3((float)pos.x, (float)pos.y, (float)pos.z));
            if (result)
            {
                return 1;
            }
            else
            {
                return 0;
            }

        }

        public void llDialog(string avatar, string message, LSL_Types.list buttons, int chat_channel)
        {
            m_host.AddScriptLPS(1);
            LLUUID av = new LLUUID();
            if (!LLUUID.TryParse(avatar,out av))
            {
                LSLError("First parameter to llDialog needs to be a key");
                return;
            }
            if (buttons.Length > 12)
            {
                LSLError("No more than 12 buttons can be shown");
                return;
            }
            string[] buts = new string[buttons.Length];
            for (int i = 0; i < buttons.Length; i++)
            {
                if (buttons.Data[i].ToString() == String.Empty)
                {
                    LSLError("button label cannot be blank");
                    return;
                }
                if (buttons.Data[i].ToString().Length > 24)
                {
                    LSLError("button label cannot be longer than 24 characters");
                    return;
                }
                buts[i] = buttons.Data[i].ToString();
            }
            World.SendDialogToUser(av, m_host.Name, m_host.UUID, m_host.OwnerID, message, new LLUUID("00000000-0000-2222-3333-100000001000"), chat_channel, buts);
        }

        public void llVolumeDetect(int detect)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llVolumeDetect");
        }

        /// <summary>
        /// Reset the named script. The script must be present
        /// in the same prim.
        /// </summary>

        public void llResetOtherScript(string name)
        {
            LLUUID item;

            m_host.AddScriptLPS(1);

            if ((item = ScriptByName(name)) != LLUUID.Zero)
                m_ScriptEngine.ResetScript(item);
            else
                ShoutError("llResetOtherScript: script "+name+" not found");
        }

        public LSL_Types.LSLInteger llGetScriptState(string name)
        {
            LLUUID item;

            m_host.AddScriptLPS(1);

            if ((item = ScriptByName(name)) != LLUUID.Zero)
            {
                return m_ScriptEngine.GetScriptState(item) ?1:0;
            }

            ShoutError("llGetScriptState: script "+name+" not found");

            // If we didn't find it, then it's safe to
            // assume it is not running.

            return 0;
        }

        public void llRemoteLoadScript()
        {
            m_host.AddScriptLPS(1);
            Deprecated("llRemoteLoadScript");
        }

        public void llSetRemoteScriptAccessPin(int pin)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetRemoteScriptAccessPin");
        }

        public void llRemoteLoadScriptPin(string target, string name, int pin, int running, int start_param)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRemoteLoadScriptPin");
        }

        //  remote_data(integer type, key channel, key message_id, string sender, integer ival, string sval)
        // Not sure where these constants should live:
        // REMOTE_DATA_CHANNEL = 1
        // REMOTE_DATA_REQUEST = 2
        // REMOTE_DATA_REPLY = 3
        public void llOpenRemoteDataChannel()
        {
            m_host.AddScriptLPS(1);
            IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
            if (xmlrpcMod.IsEnabled())
            {
                LLUUID channelID = xmlrpcMod.OpenXMLRPCChannel(m_localID, m_itemID, LLUUID.Zero);
                object[] resobj = new object[] { new LSL_Types.LSLInteger(1), new LSL_Types.LSLString(channelID.ToString()), new LSL_Types.LSLString(LLUUID.Zero.ToString()), new LSL_Types.LSLString(String.Empty), new LSL_Types.LSLInteger(0), new LSL_Types.LSLString(String.Empty) };
                m_ScriptEngine.PostScriptEvent(m_itemID, new EventParams(
                        "remote_data", resobj,
                        new DetectParams[0]));
            }
        }

        public string llSendRemoteData(string channel, string dest, int idata, string sdata)
        {
            m_host.AddScriptLPS(1);
            IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
            return (xmlrpcMod.SendRemoteData(m_localID, m_itemID, channel, dest, idata, sdata)).ToString();
        }

        public void llRemoteDataReply(string channel, string message_id, string sdata, int idata)
        {
            m_host.AddScriptLPS(1);
            IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
            xmlrpcMod.RemoteDataReply(channel, message_id, sdata, idata);
        }

        public void llCloseRemoteDataChannel(string channel)
        {
            m_host.AddScriptLPS(1);
            IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
            xmlrpcMod.CloseXMLRPCChannel(channel);
        }

        public string llMD5String(string src, int nonce)
        {
            m_host.AddScriptLPS(1);
            return Util.Md5Hash(src + ":" + nonce.ToString());
        }

        private ObjectShapePacket.ObjectDataBlock SetPrimitiveShapeParams(int holeshape, LSL_Types.Vector3 cut, float hollow, LSL_Types.Vector3 twist)
        {
            ObjectShapePacket.ObjectDataBlock shapeBlock = new ObjectShapePacket.ObjectDataBlock();

            if (holeshape != (int)ScriptBaseClass.PRIM_HOLE_DEFAULT &&
                holeshape != (int)ScriptBaseClass.PRIM_HOLE_CIRCLE &&
                holeshape != (int)ScriptBaseClass.PRIM_HOLE_SQUARE &&
                holeshape != (int)ScriptBaseClass.PRIM_HOLE_TRIANGLE)
            {
                holeshape = (int)ScriptBaseClass.PRIM_HOLE_DEFAULT;
            }
            shapeBlock.ProfileCurve = (byte)holeshape;
            if (cut.x < 0f)
            {
                cut.x = 0f;
            }
            if (cut.x > 1f)
            {
                cut.x = 1f;
            }
            if (cut.y < 0f)
            {
                cut.y = 0f;
            }
            if (cut.y > 1f)
            {
                cut.y = 1f;
            }
            if (cut.y - cut.x < 0.05f)
            {
                cut.x = cut.y - 0.05f;
            }
            shapeBlock.ProfileBegin = (ushort)(50000 * cut.x);
            shapeBlock.ProfileEnd = (ushort)(50000 * (1 - cut.y));
            if (hollow < 0f)
            {
                hollow = 0f;
            }
            if (hollow > 0.95)
            {
                hollow = 0.95f;
            }
            shapeBlock.ProfileHollow = (ushort)(50000 * hollow);
            if (twist.x < -0.5f)
            {
                twist.x = -0.5f;
            }
            if (twist.x > 0.5f)
            {
                twist.x = 0.5f;
            }
            if (twist.y < -0.5f)
            {
                twist.y = -0.5f;
            }
            if (twist.y > 0.5f)
            {
                twist.y = 0.5f;
            }
            shapeBlock.PathTwistBegin = (sbyte)(200 * twist.x);
            shapeBlock.PathTwist = (sbyte)(200 * twist.y);

            shapeBlock.ObjectLocalID = m_host.LocalId;

            // retain pathcurve
            shapeBlock.PathCurve = m_host.Shape.PathCurve;

            return shapeBlock;
        }

        private void SetPrimitiveShapeParams(int holeshape, LSL_Types.Vector3 cut, float hollow, LSL_Types.Vector3 twist, LSL_Types.Vector3 taper_b, LSL_Types.Vector3 topshear, byte fudge)
        {
            ObjectShapePacket.ObjectDataBlock shapeBlock;

            shapeBlock = SetPrimitiveShapeParams(holeshape, cut, hollow, twist);

            shapeBlock.ProfileCurve += fudge;

            if (taper_b.x < 0f)
            {
                taper_b.x = 0f;
            }
            if (taper_b.x > 2f)
            {
                taper_b.x = 2f;
            }
            if (taper_b.y < 0f)
            {
                taper_b.y = 0f;
            }
            if (taper_b.y > 2f)
            {
                taper_b.y = 2f;
            }
            shapeBlock.PathScaleX = (byte)(100 * taper_b.x);
            shapeBlock.PathScaleY = (byte)(100 * taper_b.y);
            if (topshear.x < -0.5f)
            {
                topshear.x = -0.5f;
            }
            if (topshear.x > 0.5f)
            {
                topshear.x = 0.5f;
            }
            if (topshear.y < -0.5f)
            {
                topshear.y = -0.5f;
            }
            if (topshear.y > 0.5f)
            {
                topshear.y = 0.5f;
            }
            shapeBlock.PathShearX = (byte)(100 * topshear.x);
            shapeBlock.PathShearY = (byte)(100 * topshear.y);

            m_host.UpdateShape(shapeBlock);
        }

        private void SetPrimitiveShapeParams(int holeshape, LSL_Types.Vector3 cut, float hollow, LSL_Types.Vector3 twist, LSL_Types.Vector3 dimple, byte fudge)
        {
            ObjectShapePacket.ObjectDataBlock shapeBlock;

            shapeBlock = SetPrimitiveShapeParams(holeshape, cut, hollow, twist);

            // profile/path swapped for a sphere
            shapeBlock.PathBegin = shapeBlock.ProfileBegin;
            shapeBlock.PathEnd = shapeBlock.ProfileEnd;

            shapeBlock.ProfileCurve += fudge;

            shapeBlock.PathScaleX = 100;
            shapeBlock.PathScaleY = 100;

            if (dimple.x < 0f)
            {
                dimple.x = 0f;
            }
            if (dimple.x > 1f)
            {
                dimple.x = 1f;
            }
            if (dimple.y < 0f)
            {
                dimple.y = 0f;
            }
            if (dimple.y > 1f)
            {
                dimple.y = 1f;
            }
            if (dimple.y - cut.x < 0.05f)
            {
                dimple.x = cut.y - 0.05f;
            }
            shapeBlock.ProfileBegin = (ushort)(50000 * dimple.x);
            shapeBlock.ProfileEnd   = (ushort)(50000 * (1 - dimple.y));

            m_host.UpdateShape(shapeBlock);
        }

        private void SetPrimitiveShapeParams(int holeshape, LSL_Types.Vector3 cut, float hollow, LSL_Types.Vector3 twist, LSL_Types.Vector3 holesize, LSL_Types.Vector3 topshear, LSL_Types.Vector3 profilecut, LSL_Types.Vector3 taper_a, float revolutions, float radiusoffset, float skew, byte fudge)
        {
            ObjectShapePacket.ObjectDataBlock shapeBlock;

            shapeBlock = SetPrimitiveShapeParams(holeshape, cut, hollow, twist);

            shapeBlock.ProfileCurve += fudge;

            // profile/path swapped for a torrus, tube, ring
            shapeBlock.PathBegin = shapeBlock.ProfileBegin;
            shapeBlock.PathEnd = shapeBlock.ProfileEnd;

            if (holesize.x < 0.05f)
            {
                holesize.x = 0.05f;
            }
            if (holesize.x > 1f)
            {
                holesize.x = 1f;
            }
            if (holesize.y < 0.05f)
            {
                holesize.y = 0.05f;
            }
            if (holesize.y > 0.5f)
            {
                holesize.y = 0.5f;
            }
            shapeBlock.PathScaleX = (byte)(100 * (2 - holesize.x));
            shapeBlock.PathScaleY = (byte)(100 * (2 - holesize.y));
            if (topshear.x < -0.5f)
            {
                topshear.x = -0.5f;
            }
            if (topshear.x > 0.5f)
            {
                topshear.x = 0.5f;
            }
            if (topshear.y < -0.5f)
            {
                topshear.y = -0.5f;
            }
            if (topshear.y > 0.5f)
            {
                topshear.y = 0.5f;
            }
            shapeBlock.PathShearX = (byte)(100 * topshear.x);
            shapeBlock.PathShearY = (byte)(100 * topshear.y);
            if (profilecut.x < 0f)
            {
                profilecut.x = 0f;
            }
            if (profilecut.x > 1f)
            {
                profilecut.x = 1f;
            }
            if (profilecut.y < 0f)
            {
                profilecut.y = 0f;
            }
            if (profilecut.y > 1f)
            {
                profilecut.y = 1f;
            }
            if (profilecut.y - cut.x < 0.05f)
            {
                profilecut.x = cut.y - 0.05f;
            }
            shapeBlock.ProfileBegin = (ushort)(50000 * profilecut.x);
            shapeBlock.ProfileEnd = (ushort)(50000 * (1 - profilecut.y));
            if (taper_a.x < -1f)
            {
                taper_a.x = -1f;
            }
            if (taper_a.x > 1f)
            {
                taper_a.x = 1f;
            }
            if (taper_a.y < -1f)
            {
                taper_a.y = -1f;
            }
            if (taper_a.y > 1f)
            {
                taper_a.y = 1f;
            }
            shapeBlock.PathTaperX = (sbyte)(100 * taper_a.x);
            shapeBlock.PathTaperY = (sbyte)(100 * taper_a.y);
            if (revolutions < 1f)
            {
                revolutions = 1f;
            }
            if (revolutions > 4f)
            {
                revolutions = 4f;
            }
            shapeBlock.PathRevolutions = (byte)(100 * revolutions);
            // limits on radiusoffset depend on revolutions and hole size (how?) seems like the maximum range is 0 to 1
            if (radiusoffset < 0f)
            {
                radiusoffset = 0f;
            }
            if (radiusoffset > 1f)
            {
                radiusoffset = 1f;
            }
            shapeBlock.PathRadiusOffset = (sbyte)(100 * radiusoffset);
            if (skew < -0.95f)
            {
                skew = -0.95f;
            }
            if (skew > 0.95f)
            {
                skew = 0.95f;
            }
            shapeBlock.PathSkew = (sbyte)(100 * skew);

            m_host.UpdateShape(shapeBlock);
        }

        private void SetPrimitiveShapeParams(string map, int type)
        {
            ObjectShapePacket.ObjectDataBlock shapeBlock = new ObjectShapePacket.ObjectDataBlock();
            LLUUID sculptId;

            if (!LLUUID.TryParse(map, out sculptId))
            {
                llSay(0, "Could not parse key " + map);
                return;
            }

            shapeBlock.ObjectLocalID = m_host.LocalId;
            shapeBlock.PathScaleX = 100;
            shapeBlock.PathScaleY = 150;

            if (type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_CYLINDER &&
                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_PLANE &&
                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_SPHERE &&
                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_TORUS)
            {
                // default
                type = (int)ScriptBaseClass.PRIM_SCULPT_TYPE_SPHERE;
            }

            // retain pathcurve
            shapeBlock.PathCurve = m_host.Shape.PathCurve;

            m_host.Shape.SetSculptData((byte)type, sculptId);
            m_host.Shape.SculptEntry = true;
            m_host.UpdateShape(shapeBlock);
        }

        public void llSetPrimitiveParams(LSL_Types.list rules)
        {
            llSetLinkPrimitiveParams(m_host.LinkNum, rules);
        }

        public void llSetLinkPrimitiveParams(int linknumber, LSL_Types.list rules)
        {
            m_host.AddScriptLPS(1);

            if (m_host.ParentGroup == null)
                return;

            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknumber);

            if (part == null)
                return;

            int idx = 0;

            while (idx < rules.Length)
            {
                int code = Convert.ToInt32(rules.Data[idx++]);

                int remain = rules.Length - idx;

                int face;
                LSL_Types.Vector3 v;

                switch (code)
                {
                    case (int)ScriptBaseClass.PRIM_POSITION:
                        if (remain < 1)
                            return;

                        v=new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        SetPos(part, v);

                        break;
                    case (int)ScriptBaseClass.PRIM_SIZE:
                        if (remain < 1)
                            return;

                        v=new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        SetScale(part, v);

                        break;
                    case (int)ScriptBaseClass.PRIM_ROTATION:
                        if (remain < 1)
                            return;

                        LSL_Types.Quaternion q = new LSL_Types.Quaternion(rules.Data[idx++].ToString());
                        SetRot(part, q);

                        break;

                    case (int)ScriptBaseClass.PRIM_TYPE:
                        if (remain < 3)
                            return;

                        code = Convert.ToInt32(rules.Data[idx++]);

                        remain = rules.Length - idx;
                        float hollow;
                        LSL_Types.Vector3 twist;
                        LSL_Types.Vector3 taper_b;
                        LSL_Types.Vector3 topshear;
                        float revolutions;
                        float radiusoffset;
                        float skew;
                        LSL_Types.Vector3 holesize;
                        LSL_Types.Vector3 profilecut;

                        switch (code)
                        {
                            case (int)ScriptBaseClass.PRIM_TYPE_BOX:
                                if (remain < 6)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                m_host.Shape.PathCurve = (byte) Extrusion.Straight;
                                SetPrimitiveShapeParams(face, v, hollow, twist, taper_b, topshear, 1);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_CYLINDER:
                                if (remain < 6)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                m_host.Shape.ProfileShape = ProfileShape.Circle;
                                m_host.Shape.PathCurve = (byte) Extrusion.Straight;
                                SetPrimitiveShapeParams(face, v, hollow, twist, taper_b, topshear, 0);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_PRISM:
                                if (remain < 6)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); //cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                m_host.Shape.PathCurve = (byte) Extrusion.Straight;
                                SetPrimitiveShapeParams(face, v, hollow, twist, taper_b, topshear, 3);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_SPHERE:
                                if (remain < 5)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // dimple
                                m_host.Shape.PathCurve = (byte) Extrusion.Curve1;
                                SetPrimitiveShapeParams(face, v, hollow, twist, taper_b, 5);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_TORUS:
                                if (remain < 11)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); //cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                holesize = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                profilecut = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // taper_a
                                revolutions = (float)Convert.ToDouble(rules.Data[idx++]);
                                radiusoffset = (float)Convert.ToDouble(rules.Data[idx++]);
                                skew = (float)Convert.ToDouble(rules.Data[idx++]);
                                m_host.Shape.PathCurve = (byte) Extrusion.Curve1;
                                SetPrimitiveShapeParams(face, v, hollow, twist, holesize, topshear, profilecut, taper_b, revolutions, radiusoffset, skew, 0);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_TUBE:
                                if (remain < 11)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); //cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                holesize = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                profilecut = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // taper_a
                                revolutions = (float)Convert.ToDouble(rules.Data[idx++]);
                                radiusoffset = (float)Convert.ToDouble(rules.Data[idx++]);
                                skew = (float)Convert.ToDouble(rules.Data[idx++]);
                                m_host.Shape.PathCurve = (byte) Extrusion.Curve1;
                                SetPrimitiveShapeParams(face, v, hollow, twist, holesize, topshear, profilecut, taper_b, revolutions, radiusoffset, skew, 1);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_RING:
                                if (remain < 11)
                                    return;

                                face = Convert.ToInt32(rules.Data[idx++]); // holeshape
                                v = new LSL_Types.Vector3(rules.Data[idx++].ToString()); //cut
                                hollow = (float)Convert.ToDouble(rules.Data[idx++]);
                                twist = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                holesize = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                topshear = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                profilecut = new LSL_Types.Vector3(rules.Data[idx++].ToString());
                                taper_b = new LSL_Types.Vector3(rules.Data[idx++].ToString()); // taper_a
                                revolutions = (float)Convert.ToDouble(rules.Data[idx++]);
                                radiusoffset = (float)Convert.ToDouble(rules.Data[idx++]);
                                skew = (float)Convert.ToDouble(rules.Data[idx++]);
                                m_host.Shape.PathCurve = (byte) Extrusion.Curve1;
                                SetPrimitiveShapeParams(face, v, hollow, twist, holesize, topshear, profilecut, taper_b, revolutions, radiusoffset, skew, 3);
                                break;

                            case (int)ScriptBaseClass.PRIM_TYPE_SCULPT:
                                if (remain < 2)
                                    return;

                                string map = rules.Data[idx++].ToString();
                                face = Convert.ToInt32(rules.Data[idx++]); // type
                                m_host.Shape.PathCurve = (byte) Extrusion.Curve1;
                                SetPrimitiveShapeParams(map, face);
                                break;
                        }

                        break;

                    case (int)ScriptBaseClass.PRIM_TEXTURE:
                        if (remain < 5)
                            return;

                        face=Convert.ToInt32(rules.Data[idx++]);
                        string tex=rules.Data[idx++].ToString();
                        LSL_Types.Vector3 repeats=new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        LSL_Types.Vector3 offsets=new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        double rotation=Convert.ToDouble(rules.Data[idx++]);

                        SetTexture(part, tex, face);
                        ScaleTexture(part, repeats.x, repeats.y, face);
                        OffsetTexture(part, offsets.x, offsets.y, face);
                        RotateTexture(part, rotation, face);

                        break;

                    case (int)ScriptBaseClass.PRIM_COLOR:
                        if (remain < 3)
                            return;

                        face=Convert.ToInt32(rules.Data[idx++]);
                        LSL_Types.Vector3 color=new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        double alpha=Convert.ToDouble(rules.Data[idx++]);

                        SetColor(part, color, face);
                        SetAlpha(part, alpha, face);

                        break;
                    case (int)ScriptBaseClass.PRIM_FLEXIBLE:
                        if (remain < 7)
                            return;

                        int flexi = Convert.ToInt32(rules.Data[idx++]);
                        int softness = Convert.ToInt32(rules.Data[idx++]);
                        float gravity = (float)Convert.ToDouble(rules.Data[idx++]);
                        float friction = (float)Convert.ToDouble(rules.Data[idx++]);
                        float wind = (float)Convert.ToDouble(rules.Data[idx++]);
                        float tension = (float)Convert.ToDouble(rules.Data[idx++]);
                        LSL_Types.Vector3 force =new LSL_Types.Vector3(rules.Data[idx++].ToString());

                        SetFlexi(part, (flexi == 1), softness, gravity, friction, wind, tension, force);

                        break;
                    case (int)ScriptBaseClass.PRIM_POINT_LIGHT:
                        if (remain < 5)
                            return;
                        int light = Convert.ToInt32(rules.Data[idx++]);
                        LSL_Types.Vector3 lightcolor =new LSL_Types.Vector3(rules.Data[idx++].ToString());
                        float intensity = (float)Convert.ToDouble(rules.Data[idx++]);
                        float radius = (float)Convert.ToDouble(rules.Data[idx++]);
                        float falloff = (float)Convert.ToDouble(rules.Data[idx++]);

                        SetPointLight(part, (light == 1), lightcolor, intensity, radius, falloff);

                        break;
                    case (int)ScriptBaseClass.PRIM_GLOW:
                        if (remain < 2)
                            return;
                        face = Convert.ToInt32(rules.Data[idx++]);
                        float glow = (float)Convert.ToDouble(rules.Data[idx++]);

                        SetGlow(part, face, glow);

                        break;
                    case (int)ScriptBaseClass.PRIM_BUMP_SHINY:
                        if (remain < 3)
                            return;
                        face = Convert.ToInt32(rules.Data[idx++]);
                        int shiny = Convert.ToInt32(rules.Data[idx++]);
                        Bumpiness bump = (Bumpiness)Convert.ToByte(rules.Data[idx++]);

                        SetShiny(part, face, shiny, bump);

                        break;
                     case (int)ScriptBaseClass.PRIM_FULLBRIGHT:
                         if (remain < 2)
                             return;
                         face = Convert.ToInt32(rules.Data[idx++]);
                         string bv = rules.Data[idx++].ToString();
                         bool st;
                         if (bv.Equals("1"))
                             st = true;
                         else
                             st = false;

                         SetFullBright(part, face , st);
                         break;
                     case (int)ScriptBaseClass.PRIM_MATERIAL:
                         if (remain < 1)
                             return;
                        if (part != null)
                        {
                            /* Unhandled at this time - sends "Unhandled" message
                               will enable when available
                            byte material = (byte)Convert.ToByte( rules.Data[idx++]);
                            part.Material =  material;
                            */
                            return;
                        }
                        break;
                     case (int)ScriptBaseClass.PRIM_PHANTOM:
                        if (remain < 1)
                             return;

                         string ph = rules.Data[idx++].ToString();
                         bool phantom;

                         if (ph.Equals("1"))
                             phantom = true;
                         else
                             phantom = false;

                         part.ScriptSetPhantomStatus(phantom);
                        part.ScheduleFullUpdate();
                        break;
                     case (int)ScriptBaseClass.PRIM_PHYSICS:
                        if (remain < 1)
                             return;
                         string phy = rules.Data[idx++].ToString();
                         bool physics;

                         if (phy.Equals("1"))
                             physics = true;
                         else
                             physics = false;

                         m_host.ScriptSetPhysicsStatus(physics);
                        part.ScheduleFullUpdate();
                        break;
                }
            }
        }

        public string llStringToBase64(string str)
        {
            m_host.AddScriptLPS(1);
            try
            {
                byte[] encData_byte = new byte[str.Length];
                encData_byte = Encoding.UTF8.GetBytes(str);
                string encodedData = Convert.ToBase64String(encData_byte);
                return encodedData;
            }
            catch (Exception e)
            {
                throw new Exception("Error in base64Encode" + e.Message);
            }
        }

        public string llBase64ToString(string str)
        {
            m_host.AddScriptLPS(1);
            UTF8Encoding encoder = new UTF8Encoding();
            Decoder utf8Decode = encoder.GetDecoder();
            try
            {
                byte[] todecode_byte = Convert.FromBase64String(str);
                int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);
                char[] decoded_char = new char[charCount];
                utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);
                string result = new String(decoded_char);
                return result;
            }
            catch (Exception e)
            {
                throw new Exception("Error in base64Decode" + e.Message);
            }
        }

        public void llXorBase64Strings()
        {
            m_host.AddScriptLPS(1);
            Deprecated("llXorBase64Strings");
        }

        public void llRemoteDataSetRegion()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRemoteDataSetRegion");
        }

        public double llLog10(double val)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Log10(val);
        }

        public double llLog(double val)
        {
            m_host.AddScriptLPS(1);
            return (double)Math.Log(val);
        }

        public LSL_Types.list llGetAnimationList( string id )
        {
            m_host.AddScriptLPS(1);

            LSL_Types.list l = new LSL_Types.list();
            ScenePresence av = World.GetScenePresence(id);
            if (av == null)
                return l;
            LLUUID[] anims;
            anims = av.GetAnimationArray();
            foreach (LLUUID foo in anims)
                l.Add(foo.ToString());
            return l;
        }

        public void llSetParcelMusicURL(string url)
        {
            m_host.AddScriptLPS(1);
            LLUUID landowner = World.GetLandOwner(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y);
            if (landowner == LLUUID.Zero)
            {
                return;
            }
            if (landowner != m_host.ObjectOwner)
            {
                return;
            }
            World.SetLandMusicURL(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y, url);
        }

        public void osSetParcelMediaURL(string url)
        {
            m_host.AddScriptLPS(1);
            LLUUID landowner = World.GetLandOwner(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y);

            if (landowner == LLUUID.Zero)
            {
                return;
            }

            if (landowner != m_host.ObjectOwner)
            {
                return;
            }

            World.SetLandMediaURL(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y, url);
        }

        public LSL_Types.Vector3 llGetRootPosition()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Vector3(m_host.ParentGroup.AbsolutePosition.X, m_host.ParentGroup.AbsolutePosition.Y, m_host.ParentGroup.AbsolutePosition.Z);
        }

        public LSL_Types.Quaternion llGetRootRotation()
        {
            m_host.AddScriptLPS(1);
            return new LSL_Types.Quaternion(m_host.ParentGroup.GroupRotation.X, m_host.ParentGroup.GroupRotation.Y, m_host.ParentGroup.GroupRotation.Z, m_host.ParentGroup.GroupRotation.W);
        }

        public string llGetObjectDesc()
        {
            return m_host.Description!=null?m_host.Description:String.Empty;
        }

        public void llSetObjectDesc(string desc)
        {
            m_host.AddScriptLPS(1);
            m_host.Description = desc!=null?desc:String.Empty;
        }

        public string llGetCreator()
        {
            m_host.AddScriptLPS(1);
            return m_host.ObjectCreator.ToString();
        }

        public string llGetTimestamp()
        {
            m_host.AddScriptLPS(1);
            return DateTime.Now.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffffffZ");
        }

        public void llSetLinkAlpha(int linknumber, double alpha, int face)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknumber);
            if (linknumber > -1)
            {
                LLObject.TextureEntry tex = part.Shape.Textures;
                LLColor texcolor;
                if (face > -1)
                {
                    texcolor = tex.CreateFace((uint)face).RGBA;
                    texcolor.A = (float)Math.Abs(alpha - 1);
                    tex.FaceTextures[face].RGBA = texcolor;
                    part.UpdateTexture(tex);
                    return;
                }
                else if (face == -1)
                {
                    texcolor = tex.DefaultTexture.RGBA;
                    texcolor.A = (float)Math.Abs(alpha - 1);
                    tex.DefaultTexture.RGBA = texcolor;
                    for (uint i = 0; i < 32; i++)
                    {
                        if (tex.FaceTextures[i] != null)
                        {
                            texcolor = tex.FaceTextures[i].RGBA;
                            texcolor.A = (float)Math.Abs(alpha - 1);
                            tex.FaceTextures[i].RGBA = texcolor;
                        }
                    }
                    texcolor = tex.DefaultTexture.RGBA;
                    texcolor.A = (float)Math.Abs(alpha - 1);
                    tex.DefaultTexture.RGBA = texcolor;
                    part.UpdateTexture(tex);
                    return;
                }
                return;
            }
            else if (linknumber == -1)
            {
                int num = m_host.ParentGroup.PrimCount;
                for (int w = 0; w < num; w++)
                {
                    linknumber = w;
                    part = m_host.ParentGroup.GetLinkNumPart(linknumber);
                    LLObject.TextureEntry tex = part.Shape.Textures;
                    LLColor texcolor;
                    if (face > -1)
                    {
                        texcolor = tex.CreateFace((uint)face).RGBA;
                        texcolor.A = (float)Math.Abs(alpha - 1);
                        tex.FaceTextures[face].RGBA = texcolor;
                        part.UpdateTexture(tex);
                    }
                    else if (face == -1)
                    {
                        texcolor = tex.DefaultTexture.RGBA;
                        texcolor.A = (float)Math.Abs(alpha - 1);
                        tex.DefaultTexture.RGBA = texcolor;
                        for (uint i = 0; i < 32; i++)
                        {
                            if (tex.FaceTextures[i] != null)
                            {
                                texcolor = tex.FaceTextures[i].RGBA;
                                texcolor.A = (float)Math.Abs(alpha - 1);
                                tex.FaceTextures[i].RGBA = texcolor;
                            }
                        }
                        texcolor = tex.DefaultTexture.RGBA;
                        texcolor.A = (float)Math.Abs(alpha - 1);
                        tex.DefaultTexture.RGBA = texcolor;
                        part.UpdateTexture(tex);
                    }
                }
                return;
            }
        }

        public LSL_Types.LSLInteger llGetNumberOfPrims()
        {
            m_host.AddScriptLPS(1);
            return m_host.ParentGroup.PrimCount;
        }

        public LSL_Types.list llGetBoundingBox(string obj)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetBoundingBox");
            return new LSL_Types.list();
        }

        public LSL_Types.Vector3 llGetGeometricCenter()
        {
            return new LSL_Types.Vector3(m_host.GetGeometricCenter().X, m_host.GetGeometricCenter().Y, m_host.GetGeometricCenter().Z);
        }

        public LSL_Types.list llGetPrimitiveParams(LSL_Types.list rules)
        {
            m_host.AddScriptLPS(1);

            LSL_Types.list res = new LSL_Types.list();
            int idx=0;
            while (idx < rules.Length)
            {
                int code=Convert.ToInt32(rules.Data[idx++]);
                int remain=rules.Length-idx;

                switch (code)
                {
                    case (int)ScriptBaseClass.PRIM_MATERIAL:
                        res.Add(new LSL_Types.LSLInteger(m_host.Material));
                        break;

                    case (int)ScriptBaseClass.PRIM_PHYSICS:
                        if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.Physics) != 0)
                            res.Add(new LSL_Types.LSLInteger(1));
                        else
                            res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_TEMP_ON_REZ:
                        if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.TemporaryOnRez) != 0)
                            res.Add(new LSL_Types.LSLInteger(1));
                        else
                            res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_PHANTOM:
                        if ((m_host.GetEffectiveObjectFlags() & (uint)LLObject.ObjectFlags.Phantom) != 0)
                            res.Add(new LSL_Types.LSLInteger(1));
                        else
                            res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_POSITION:
                        res.Add(new LSL_Types.Vector3(m_host.AbsolutePosition.X,
                                                      m_host.AbsolutePosition.Y,
                                                      m_host.AbsolutePosition.Z));
                        break;

                    case (int)ScriptBaseClass.PRIM_SIZE:
                        res.Add(new LSL_Types.Vector3(m_host.Scale.X,
                                                      m_host.Scale.Y,
                                                      m_host.Scale.Z));
                        break;

                    case (int)ScriptBaseClass.PRIM_ROTATION:
                        res.Add(new LSL_Types.Quaternion(m_host.RotationOffset.X,
                                                         m_host.RotationOffset.Y,
                                                         m_host.RotationOffset.Z,
                                                         m_host.RotationOffset.W));
                        break;

                    case (int)ScriptBaseClass.PRIM_TYPE:
                        // TODO--------------
                        res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_TEXTURE:
                        if (remain < 1)
                            return res;

                        int face=Convert.ToInt32(rules.Data[idx++]);
                        if (face == -1)
                            face = 0;

                        LLObject.TextureEntry tex = m_host.Shape.Textures;
                        LLObject.TextureEntryFace texface = tex.GetFace((uint)face);

                        res.Add(new LSL_Types.LSLString(texface.TextureID.ToString()));
                        res.Add(new LSL_Types.Vector3(texface.RepeatU,
                                                      texface.RepeatV,
                                                      0));
                        res.Add(new LSL_Types.Vector3(texface.OffsetU,
                                                      texface.OffsetV,
                                                      0));
                        res.Add(new LSL_Types.LSLFloat(texface.Rotation));
                        break;

                    case (int)ScriptBaseClass.PRIM_COLOR:
                        if (remain < 1)
                            return res;

                        face=Convert.ToInt32(rules.Data[idx++]);

                        tex = m_host.Shape.Textures;
                        LLColor texcolor;
                        if (face == -1) // TMP: Until we can determine number of sides, ALL_SIDES (-1) will return default color
                            texcolor = tex.DefaultTexture.RGBA;
                        else
                            texcolor = tex.GetFace((uint)face).RGBA;
                        res.Add(new LSL_Types.Vector3((255 - (texcolor.R * 255)) / 255,
                                                      (255 - (texcolor.G * 255)) / 255,
                                                      (255 - (texcolor.B * 255)) / 255));
                        res.Add(new LSL_Types.LSLFloat((texcolor.A * 255) / 255));
                        break;

                    case (int)ScriptBaseClass.PRIM_BUMP_SHINY:
                        // TODO--------------
                        if (remain < 1)
                            return res;

                        face=Convert.ToInt32(rules.Data[idx++]);

                        res.Add(new LSL_Types.LSLInteger(0));
                        res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_FULLBRIGHT:
                        // TODO--------------
                        if (remain < 1)
                            return res;

                        face=Convert.ToInt32(rules.Data[idx++]);

                        res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_FLEXIBLE:
                        PrimitiveBaseShape shape = m_host.Shape;

                        if (shape.FlexiEntry)
                            res.Add(new LSL_Types.LSLInteger(1));              // active
                        else
                            res.Add(new LSL_Types.LSLInteger(0));
                        res.Add(new LSL_Types.LSLInteger(shape.FlexiSoftness));// softness
                        res.Add(new LSL_Types.LSLFloat(shape.FlexiGravity));   // gravity
                        res.Add(new LSL_Types.LSLFloat(shape.FlexiDrag));      // friction
                        res.Add(new LSL_Types.LSLFloat(shape.FlexiWind));      // wind
                        res.Add(new LSL_Types.LSLFloat(shape.FlexiTension));   // tension
                        res.Add(new LSL_Types.Vector3(shape.FlexiForceX,       // force
                                                      shape.FlexiForceY,
                                                      shape.FlexiForceZ));
                        break;

                    case (int)ScriptBaseClass.PRIM_TEXGEN:
                        // TODO--------------
                        // (PRIM_TEXGEN_DEFAULT, PRIM_TEXGEN_PLANAR)
                        if (remain < 1)
                            return res;

                        face=Convert.ToInt32(rules.Data[idx++]);

                        res.Add(new LSL_Types.LSLInteger(0));
                        break;

                    case (int)ScriptBaseClass.PRIM_POINT_LIGHT:
                        shape = m_host.Shape;

                        if (shape.LightEntry)
                            res.Add(new LSL_Types.LSLInteger(1));              // active
                        else
                            res.Add(new LSL_Types.LSLInteger(0));
                        res.Add(new LSL_Types.Vector3(shape.LightColorR,       // color
                                                      shape.LightColorG,
                                                      shape.LightColorB));
                        res.Add(new LSL_Types.LSLFloat(shape.LightIntensity)); // intensity
                        res.Add(new LSL_Types.LSLFloat(shape.LightRadius));    // radius
                        res.Add(new LSL_Types.LSLFloat(shape.LightFalloff));   // falloff
                        break;

                    case (int)ScriptBaseClass.PRIM_GLOW:
                        // TODO--------------
                        if (remain < 1)
                            return res;

                        face=Convert.ToInt32(rules.Data[idx++]);

                        res.Add(new LSL_Types.LSLFloat(0));
                        break;
                }
            }
            return res;
        }

        //  <remarks>
        //  <para>
        //  The .NET definition of base 64 is:
        //  <list>
        //  <item>
        //  Significant: A-Z a-z 0-9 + -
        //  </item>
        //  <item>
        //  Whitespace: \t \n \r ' '
        //  </item>
        //  <item>
        //  Valueless: =
        //  </item>
        //  <item>
        //  End-of-string: \0 or '=='
        //  </item>
        //  </list>
        //  </para>
        //  <para>
        //  Each point in a base-64 string represents
        //  a 6 bit value. A 32-bit integer can be
        //  represented using 6 characters (with some
        //  redundancy).
        //  </para>
        //  <para>
        //  LSL requires a base64 string to be 8
        //  characters in length. LSL also uses '/'
        //  rather than '-' (MIME compliant).
        //  </para>
        //  <para>
        //  RFC 1341 used as a reference (as specified
        //  by the SecondLife Wiki).
        //  </para>
        //  <para>
        //  SL do not record any kind of exception for
        //  these functions, so the string to integer
        //  conversion returns '0' if an invalid
        //  character is encountered during conversion.
        //  </para>
        //  <para>
        //  References
        //  <list>
        //  <item>
        //  http://lslwiki.net/lslwiki/wakka.php?wakka=Base64
        //  </item>
        //  <item>
        //  </item>
        //  </list>
        //  </para>
        //  </remarks>

        //  <summary>
        //  Table for converting 6-bit integers into
        //  base-64 characters
        //  </summary>

        private static readonly char[] i2ctable =
        {
            'A','B','C','D','E','F','G','H',
            'I','J','K','L','M','N','O','P',
            'Q','R','S','T','U','V','W','X',
            'Y','Z',
            'a','b','c','d','e','f','g','h',
            'i','j','k','l','m','n','o','p',
            'q','r','s','t','u','v','w','x',
            'y','z',
            '0','1','2','3','4','5','6','7',
            '8','9',
            '+','/'
        };

        //  <summary>
        //  Table for converting base-64 characters
        //  into 6-bit integers.
        //  </summary>

        private static readonly int[] c2itable =
        {
            -1,-1,-1,-1,-1,-1,-1,-1,    // 0x
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // 1x
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // 2x
            -1,-1,-1,63,-1,-1,-1,64,
            53,54,55,56,57,58,59,60,    // 3x
            61,62,-1,-1,-1,0,-1,-1,
            -1,1,2,3,4,5,6,7,           // 4x
            8,9,10,11,12,13,14,15,
            16,17,18,19,20,21,22,23,    // 5x
            24,25,26,-1,-1,-1,-1,-1,
            -1,27,28,29,30,31,32,33,    // 6x
            34,35,36,37,38,39,40,41,
            42,43,44,45,46,47,48,49,    // 7x
            50,51,52,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // 8x
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // 9x
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Ax
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Bx
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Cx
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Dx
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Ex
            -1,-1,-1,-1,-1,-1,-1,-1,
            -1,-1,-1,-1,-1,-1,-1,-1,    // Fx
            -1,-1,-1,-1,-1,-1,-1,-1
        };

        //  <summary>
        //  Converts a 32-bit integer into a Base64
        //  character string. Base64 character strings
        //  are always 8 characters long. All iinteger
        //  values are acceptable.
        //  </summary>
        //  <param name="number">
        //  32-bit integer to be converted.
        //  </param>
        //  <returns>
        //  8 character string. The 1st six characters
        //  contain the encoded number, the last two
        //  characters are padded with "=".
        //  </returns>

        public string llIntegerToBase64(int number)
        {
            // uninitialized string

            char[] imdt = new char[8];

            m_host.AddScriptLPS(1);

            // Manually unroll the loop

            imdt[7] = '=';
            imdt[6] = '=';
            imdt[5] = i2ctable[number<<4  & 0x3F];
            imdt[4] = i2ctable[number>>2  & 0x3F];
            imdt[3] = i2ctable[number>>8  & 0x3F];
            imdt[2] = i2ctable[number>>14 & 0x3F];
            imdt[1] = i2ctable[number>>20 & 0x3F];
            imdt[0] = i2ctable[number>>26 & 0x3F];

            return new string(imdt);
        }

        //  <summary>
        //  Converts an eight character base-64 string
        //  into a 32-bit integer.
        //  </summary>
        //  <param name="str">
        //  8 characters string to be converted. Other
        //  length strings return zero.
        //  </param>
        //  <returns>
        //  Returns an integer representing the
        //  encoded value providedint he 1st 6
        //  characters of the string.
        //  </returns>
        //  <remarks>
        //  This is coded to behave like LSL's
        //  implementation (I think), based upon the
        //  information available at the Wiki.
        //  If more than 8 characters are supplied,
        //  zero is returned.
        //  If a NULL string is supplied, zero will
        //  be returned.
        //  If fewer than 6 characters are supplied, then
        //  the answer will reflect a partial
        //  accumulation.
        //  <para>
        //  The 6-bit segments are
        //  extracted left-to-right in big-endian mode,
        //  which means that segment 6 only contains the
        //  two low-order bits of the 32 bit integer as
        //  its high order 2 bits. A short string therefore
        //  means loss of low-order information. E.g.
        //
        //  |<---------------------- 32-bit integer ----------------------->|<-Pad->|
        //  |<--Byte 0----->|<--Byte 1----->|<--Byte 2----->|<--Byte 3----->|<-Pad->|
        //  |3|3|2|2|2|2|2|2|2|2|2|2|1|1|1|1|1|1|1|1|1|1| | | | | | | | | | |P|P|P|P|
        //  |1|0|9|8|7|6|5|4|3|2|1|0|9|8|7|6|5|4|3|2|1|0|9|8|7|6|5|4|3|2|1|0|P|P|P|P|
        //  |  str[0]   |  str[1]   |  str[2]   |  str[3]   |  str[4]   |  str[6]   |
        //
        //  </para>
        //  </remarks>

        public LSL_Types.LSLInteger llBase64ToInteger(string str)
        {
            int number = 0;
            int digit;

            m_host.AddScriptLPS(1);

            //    Require a well-fromed base64 string

            if (str.Length > 8)
                return 0;

            //    The loop is unrolled in the interests
            //    of performance and simple necessity.
            //
            //    MUST find 6 digits to be well formed
            //      -1 == invalid
            //       0 == padding

            if ((digit=c2itable[str[0]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit<<26;

            if ((digit=c2itable[str[1]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit<<20;

            if ((digit=c2itable[str[2]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit<<14;

            if ((digit=c2itable[str[3]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit<<8;

            if ((digit=c2itable[str[4]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit<<2;

            if ((digit=c2itable[str[5]])<=0)
            {
                return digit<0?(int)0:number;
            }
            number += --digit>>4;

            // ignore trailing padding

            return number;
        }

        public double llGetGMTclock()
        {
            m_host.AddScriptLPS(1);
            return DateTime.UtcNow.TimeOfDay.TotalSeconds;
        }

        public string llGetSimulatorHostname()
        {
            m_host.AddScriptLPS(1);
            return System.Environment.MachineName;
        }

        public void llSetLocalRot(LSL_Types.Quaternion rot)
        {
            m_host.AddScriptLPS(1);
            m_host.RotationOffset = new LLQuaternion((float)rot.x, (float)rot.y, (float)rot.z, (float)rot.s);
        }

        //  <summary>
        //  Scan the string supplied in 'src' and
        //  tokenize it based upon two sets of
        //  tokenizers provided in two lists,
        //  separators and spacers.
        //  </summary>
        //
        //  <remarks>
        //  Separators demarcate tokens and are
        //  elided as they are encountered. Spacers
        //  also demarcate tokens, but are themselves
        //  retained as tokens.
        //
        //  Both separators and spacers may be arbitrarily
        //  long strings. i.e. ":::".
        //
        //  The function returns an ordered list
        //  representing the tokens found in the supplied
        //  sources string. If two successive tokenizers
        //  are encountered, then a NULL entry is added
        //  to the list.
        //
        //  It is a precondition that the source and
        //  toekizer lisst are non-null. If they are null,
        //  then a null pointer exception will be thrown
        //  while their lengths are being determined.
        //
        //  A small amount of working memoryis required
        //  of approximately 8*#tokenizers.
        //
        //  There are many ways in which this function
        //  can be implemented, this implementation is
        //  fairly naive and assumes that when the
        //  function is invooked with a short source
        //  string and/or short lists of tokenizers, then
        //  performance will not be an issue.
        //
        //  In order to minimize the perofrmance
        //  effects of long strings, or large numbers
        //  of tokeizers, the function skips as far as
        //  possible whenever a toekenizer is found,
        //  and eliminates redundant tokenizers as soon
        //  as is possible.
        //
        //  The implementation tries to avoid any copying
        //  of arrays or other objects.
        //  </remarks>

        public LSL_Types.list llParseStringKeepNulls(string src, LSL_Types.list separators, LSL_Types.list spacers)
        {
            int         beginning = 0;
            int         srclen    = src.Length;
            int         seplen    = separators.Length;
            object[]    separray  = separators.Data;
            int         spclen    = spacers.Length;
            object[]    spcarray  = spacers.Data;
            int         mlen      = seplen+spclen;

            int[]       offset    = new int[mlen+1];
            bool[]      active    = new bool[mlen];

            int         best;
            int         j;

            //    Initial capacity reduces resize cost

            LSL_Types.list tokens = new LSL_Types.list();

            m_host.AddScriptLPS(1);

            //    All entries are initially valid

            for (int i = 0; i < mlen; i++)
                active[i] = true;

            offset[mlen] = srclen;

            while (beginning < srclen)
            {

                best = mlen;    // as bad as it gets

                //    Scan for separators

                for (j = 0; j < seplen; j++)
                {
                    if (active[j])
                    {
                        // scan all of the markers
                        if ((offset[j] = src.IndexOf((string)separray[j],beginning)) == -1)
                        {
                            // not present at all
                            active[j] = false;
                        }
                        else
                        {
                            // present and correct
                            if (offset[j] < offset[best])
                            {
                                // closest so far
                                best = j;
                                if (offset[best] == beginning)
                                    break;
                            }
                        }
                    }
                }

                //    Scan for spacers

                if (offset[best] != beginning)
                {
                    for (j = seplen; (j < mlen) && (offset[best] > beginning); j++)
                    {
                        if (active[j])
                        {
                            // scan all of the markers
                            if ((offset[j] = src.IndexOf((string)spcarray[j-seplen], beginning)) == -1)
                            {
                                // not present at all
                                active[j] = false;
                            }
                            else
                            {
                                // present and correct
                                if (offset[j] < offset[best])
                                {
                                    // closest so far
                                    best = j;
                                }
                            }
                        }
                    }
                }

                //    This is the normal exit from the scanning loop

                if (best == mlen)
                {
                    // no markers were found on this pass
                    // so we're pretty much done
                    tokens.Add(src.Substring(beginning, srclen - beginning));
                    break;
                }

                //    Otherwise we just add the newly delimited token
                //    and recalculate where the search should continue.

                tokens.Add(src.Substring(beginning,offset[best]-beginning));

                if (best < seplen)
                {
                    beginning = offset[best] + ((string)separray[best]).Length;
                }
                else
                {
                    beginning = offset[best] + ((string)spcarray[best - seplen]).Length;
                    tokens.Add(spcarray[best - seplen]);
                }
            }

            //    This an awkward an not very intuitive boundary case. If the
            //    last substring is a tokenizer, then there is an implied trailing
            //    null list entry. Hopefully the single comparison will not be too
            //    arduous. Alternatively the 'break' could be replced with a return
            //    but that's shabby programming.

            if (beginning == srclen)
            {
                if (srclen != 0)
                    tokens.Add("");
            }

            return tokens;
        }

        public LSL_Types.LSLInteger llGetObjectPermMask(int mask)
        {
            m_host.AddScriptLPS(1);

            int permmask = 0;

            if (mask == ScriptBaseClass.MASK_BASE)//0
            {
                permmask = (int)m_host.BaseMask;
            }

            else if (mask == ScriptBaseClass.MASK_OWNER)//1
            {
                permmask = (int)m_host.OwnerMask;
            }

            else if (mask == ScriptBaseClass.MASK_GROUP)//2
            {
                permmask = (int)m_host.GroupMask;
            }

            else if (mask == ScriptBaseClass.MASK_EVERYONE)//3
            {
                permmask = (int)m_host.EveryoneMask;
            }

            else if (mask == ScriptBaseClass.MASK_NEXT)//4
            {
                permmask = (int)m_host.NextOwnerMask;
            }

            return permmask;
        }

        public void llSetObjectPermMask(int mask, int value)
        {
            m_host.AddScriptLPS(1);
            IConfigSource config = new IniConfigSource(Application.iniFilePath);
            if (config.Configs["XEngine"] == null)
                config.AddConfig("XEngine");

            if (config.Configs["XEngine"].GetBoolean("AllowGodFunctions", false))
            {
                if (World.ExternalChecks.ExternalChecksCanRunConsoleCommand(m_host.OwnerID))
                {
                    if (mask == ScriptBaseClass.MASK_BASE)//0
                    {
                        m_host.BaseMask = (uint)value;
                    }

                    else if (mask == ScriptBaseClass.MASK_OWNER)//1
                    {
                        m_host.OwnerMask = (uint)value;
                    }

                    else if (mask == ScriptBaseClass.MASK_GROUP)//2
                    {
                        m_host.GroupMask = (uint)value;
                    }

                    else if (mask == ScriptBaseClass.MASK_EVERYONE)//3
                    {
                        m_host.EveryoneMask = (uint)value;
                    }

                    else if (mask == ScriptBaseClass.MASK_NEXT)//4
                    {
                        m_host.NextOwnerMask = (uint)value;
                    }
                }
            }
        }

        public LSL_Types.LSLInteger llGetInventoryPermMask(string item, int mask)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == item)
                {
                    switch (mask)
                    {
                        case 0:
                            return (int)inv.Value.BasePermissions;
                        case 1:
                            return (int)inv.Value.CurrentPermissions;
                        case 2:
                            return (int)inv.Value.GroupPermissions;
                        case 3:
                            return (int)inv.Value.EveryonePermissions;
                        case 4:
                            return (int)inv.Value.NextPermissions;
                    }
                }
            }
            return -1;
        }

        public void llSetInventoryPermMask(string item, int mask, int value)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetInventoryPermMask");
        }

        public string llGetInventoryCreator(string item)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == item)
                {
                    return inv.Value.CreatorID.ToString();
                }
            }
            llSay(0, "No item name '" + item + "'");
            return String.Empty;
        }

        public void llOwnerSay(string msg)
        {
            m_host.AddScriptLPS(1);

            World.SimChatBroadcast(Helpers.StringToField(msg), ChatTypeEnum.Owner, 0, m_host.AbsolutePosition, m_host.Name, m_host.UUID, false);
//            IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
//            wComm.DeliverMessage(ChatTypeEnum.Owner, 0, m_host.Name, m_host.UUID, msg);
        }

        public string llRequestSimulatorData(string simulator, int data)
        {
            try
            {
                m_host.AddScriptLPS(1);

                string reply = String.Empty;

                RegionInfo info = m_ScriptEngine.World.RequestClosestRegion(simulator);

                switch (data)
                {
                    case 5: // DATA_SIM_POS
                        if (info == null)
                            return LLUUID.Zero.ToString();
                        reply = new LSL_Types.Vector3(
                            info.RegionLocX * Constants.RegionSize,
                            info.RegionLocY * Constants.RegionSize,
                            0).ToString();
                        break;
                    case 6: // DATA_SIM_STATUS
                        if (info != null)
                            reply = "up"; // Duh!
                        else
                            reply = "unknown";
                        break;
                    case 7: // DATA_SIM_RATING
                        if (info == null)
                            return LLUUID.Zero.ToString();
                        int access = info.RegionSettings.Maturity;
                        if (access == 0)
                            reply = "PG";
                        else if (access == 1)
                            reply = "MATURE";
                        else
                            reply = "UNKNOWN";
                        break;
                    case 128: // SIM_RELEASE
                        reply = m_ScriptEngine.World.GetSimulatorVersion();
                        break;
                    default:
                        return LLUUID.Zero.ToString(); // Raise no event
                }
                LLUUID rq = LLUUID.Random();

                LLUUID tid = AsyncCommands.
                    DataserverPlugin.RegisterRequest(m_localID,
                                                 m_itemID, rq.ToString());

                AsyncCommands.
                    DataserverPlugin.DataserverReply(rq.ToString(), reply);

                return tid.ToString();
            }
            catch(Exception e)
            {
                Console.WriteLine(e.ToString());
                return LLUUID.Zero.ToString();
            }
        }

        public void llForceMouselook(int mouselook)
        {
            m_host.AddScriptLPS(1);
            m_host.SetForceMouselook(mouselook != 0);
        }

        public double llGetObjectMass(string id)
        {
            m_host.AddScriptLPS(1);
            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id,out key))
            {
                return (double) World.GetSceneObjectPart(World.Entities[key].LocalId).GetMass();
            }
            return 0;
        }

        /// <summary>
        /// illListReplaceList removes the sub-list defined by the inclusive indices
        /// start and end and inserts the src list in its place. The inclusive
        /// nature of the indices means that at least one element must be deleted
        /// if the indices are within the bounds of the existing list. I.e. 2,2
        /// will remove the element at index 2 and replace it with the source
        /// list. Both indices may be negative, with the usual interpretation. An
        /// interesting case is where end is lower than start. As these indices
        /// bound the list to be removed, then 0->end, and start->lim are removed
        /// and the source list is added as a suffix.
        /// </summary>

        public LSL_Types.list llListReplaceList(LSL_Types.list dest, LSL_Types.list src, int start, int end)
        {
            LSL_Types.list pref = null;

            m_host.AddScriptLPS(1);

            // Note that although we have normalized, both
            // indices could still be negative.
            if (start < 0)
            {
                start = start+dest.Length;
            }

            if (end < 0)
            {
                end = end+dest.Length;
            }
            // The comventional case, remove a sequence starting with
            // start and ending with end. And then insert the source
            // list.
            if (start <= end)
            {
                // If greater than zero, then there is going to be a
                // surviving prefix. Otherwise the inclusive nature
                // of the indices mean that we're going to add the
                // source list as a prefix.
                if (start > 0)
                {
                    pref = dest.GetSublist(0,start-1);
                    // Only add a suffix if there is something
                    // beyond the end index (it's inclusive too).
                    if (end + 1 < dest.Length)
                    {
                        return pref + src + dest.GetSublist(end + 1, -1);
                    }
                    else
                    {
                        return pref + src;
                    }
                }
                // If start is less than or equal to zero, then
                // the new list is simply a prefix. We still need to
                // figure out any necessary surgery to the destination
                // based upon end. Note that if end exceeds the upper
                // bound in this case, the entire destination list
                // is removed.
                else
                {
                    if (end + 1 < dest.Length)
                    {
                        return src + dest.GetSublist(end + 1, -1);
                    }
                    else
                    {
                        return src;
                    }
                }
            }
            // Finally, if start > end, we strip away a prefix and
            // a suffix, to leave the list that sits <between> ens
            // and start, and then tag on the src list. AT least
            // that's my interpretation. We can get sublist to do
            // this for us. Note that one, or both of the indices
            // might have been negative.
            else
            {
                return dest.GetSublist(end + 1, start - 1) + src;
            }
        }

        public void llLoadURL(string avatar_id, string message, string url)
        {
            m_host.AddScriptLPS(1);
            LLUUID avatarId = new LLUUID(avatar_id);
            m_ScriptEngine.World.SendUrlToUser(avatarId, m_host.Name, m_host.UUID, m_host.ObjectOwner, false, message,
                                               url);
        }

        public void llParcelMediaCommandList(LSL_Types.list commandList)
        {
            //TO DO: Implement the missing commands
            //PARCEL_MEDIA_COMMAND_STOP        Stop the media stream and go back to the first frame.
            //PARCEL_MEDIA_COMMAND_PAUSE       Pause the media stream (stop playing but stay on current frame).
            //PARCEL_MEDIA_COMMAND_PLAY        Start the media stream playing from the current frame and stop when the end is reached.
            //PARCEL_MEDIA_COMMAND_LOOP        Start the media stream playing from the current frame. When the end is reached, loop to the beginning and continue.
            //PARCEL_MEDIA_COMMAND_TEXTURE     key uuid        Use this to get or set the parcel's media texture.
            //PARCEL_MEDIA_COMMAND_URL         string url      Used to get or set the parcel's media url.
            //PARCEL_MEDIA_COMMAND_TIME        float time      Move a media stream to a specific time.
            //PARCEL_MEDIA_COMMAND_AGENT       key uuid        Applies the media command to the specified agent only.
            //PARCEL_MEDIA_COMMAND_UNLOAD      Completely unloads the movie and restores the original texture.
            //PARCEL_MEDIA_COMMAND_AUTO_ALIGN  integer boolean         Sets the parcel option 'Auto scale content'.
            //PARCEL_MEDIA_COMMAND_TYPE        string mime_type        Use this to get or set the parcel media MIME type (e.g. "text/html"). (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_SIZE        integer x, integer y    Use this to get or set the parcel media pixel resolution. (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_DESC        string desc     Use this to get or set the parcel media description. (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_LOOP_SET    float loop      Use this to get or set the parcel's media loop duration. (1.19.1 RC0 or later)
            m_host.AddScriptLPS(1);
            for (int i = 0; i < commandList.Data.Length; i++)
            {
                switch ((ParcelMediaCommandEnum)commandList.Data[i])
                {
                    case ParcelMediaCommandEnum.Play:
                        List<ScenePresence> scenePresencePlayList = World.GetScenePresences();
                        foreach (ScenePresence agent in scenePresencePlayList)
                        {
                            if (!agent.IsChildAgent)
                            {
                                agent.ControllingClient.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Play, 0);
                            }
                        }
                        break;
                    case ParcelMediaCommandEnum.Stop:
                        List<ScenePresence> scenePresenceStopList = World.GetScenePresences();
                        foreach (ScenePresence agent in scenePresenceStopList)
                        {
                            if (!agent.IsChildAgent)
                            {
                                agent.ControllingClient.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Stop, 0);
                            }
                        }
                        break;
                    case ParcelMediaCommandEnum.Pause:
                        List<ScenePresence> scenePresencePauseList = World.GetScenePresences();
                        foreach (ScenePresence agent in scenePresencePauseList)
                        {
                            if (!agent.IsChildAgent)
                            {
                                agent.ControllingClient.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Pause, 0);
                            }
                        }
                        break;

                    case ParcelMediaCommandEnum.Url:
                        if ((i + 1) < commandList.Length)
                        {
                            if (commandList.Data[i + 1] is string)
                            {
                                //Set the new media URL only if the user is the owner of the land
                                osSetParcelMediaURL(commandList.Data[i + 1].ToString());

                                List<ScenePresence> scenePresenceList = World.GetScenePresences();
                                LandData landData = World.GetLandData(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y);
                                //Send an update of the mediaURL to all the clients that are in the parcel
                                foreach (ScenePresence agent in scenePresenceList)
                                {
                                    if (!agent.IsChildAgent)
                                    {
                                        //Send parcel media update to the client
                                        agent.ControllingClient.SendParcelMediaUpdate(landData.MediaURL, landData.MediaID, landData.MediaAutoScale, "", landData.Description, 0, 0, 1);
                                    }
                                }

                            }
                            i++;
                        }
                        break;
                    default:
                        ParcelMediaCommandEnum mediaCommandEnum = ParcelMediaCommandEnum.Url;
                        NotImplemented("llParcelMediaCommandList parameter do not supported yet: " + Enum.Parse(mediaCommandEnum.GetType(), commandList.Data[i].ToString()).ToString());
                        break;
                }//end switch

            }


            //NotImplemented("llParcelMediaCommandList");
        }

        public LSL_Types.list llParcelMediaQuery(LSL_Types.list aList)
        {
            m_host.AddScriptLPS(1);
            LSL_Types.list list = new LSL_Types.list();
            //TO DO: make the implementation for the missing commands
            //PARCEL_MEDIA_COMMAND_TEXTURE     key uuid        Use this to get or set the parcel's media texture.
            //PARCEL_MEDIA_COMMAND_URL         string url      Used to get or set the parcel's media url.
            //PARCEL_MEDIA_COMMAND_TYPE        string mime_type        Use this to get or set the parcel media MIME type (e.g. "text/html"). (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_SIZE        integer x, integer y    Use this to get or set the parcel media pixel resolution. (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_DESC        string desc     Use this to get or set the parcel media description. (1.19.1 RC0 or later)
            //PARCEL_MEDIA_COMMAND_LOOP_SET    float loop      Use this to get or set the parcel's media loop duration. (1.19.1 RC0 or later)
            for (int i = 0; i < aList.Data.Length; i++)
            {

                if (aList.Data[i] != null)
                {
                    switch ((ParcelMediaCommandEnum) aList.Data[i])
                    {
                        case ParcelMediaCommandEnum.Url:
                            list.Add(World.GetLandData(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).MediaURL);
                            break;
                        case ParcelMediaCommandEnum.Desc:
                            list.Add(World.GetLandData(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).Description);
                            break;
                        case ParcelMediaCommandEnum.Texture:
                            list.Add(World.GetLandData(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).MediaID);
                            break;
                        default:
                            ParcelMediaCommandEnum mediaCommandEnum = ParcelMediaCommandEnum.Url;
                            NotImplemented("llParcelMediaQuery parameter do not supported yet: " + Enum.Parse(mediaCommandEnum.GetType() , aList.Data[i].ToString()).ToString());
                            break;
                    }

                }
            }
            return list;

        }

        public LSL_Types.LSLInteger llModPow(int a, int b, int c)
        {
            m_host.AddScriptLPS(1);
            Int64 tmp = 0;
            Math.DivRem(Convert.ToInt64(Math.Pow(a, b)), c, out tmp);
            return Convert.ToInt32(tmp);
        }

        public LSL_Types.LSLInteger llGetInventoryType(string name)
        {
            m_host.AddScriptLPS(1);
            foreach (KeyValuePair<LLUUID, TaskInventoryItem> inv in m_host.TaskInventory)
            {
                if (inv.Value.Name == name)
                {
                    return inv.Value.InvType;
                }
            }
            return -1;
        }

        public void llSetPayPrice(int price, LSL_Types.list quick_pay_buttons)
        {
            m_host.AddScriptLPS(1);

            if (quick_pay_buttons.Data.Length != 4)
            {
                LSLError("List must have 4 elements");
                return;
            }
            m_host.ParentGroup.RootPart.PayPrice[0]=price;
            m_host.ParentGroup.RootPart.PayPrice[1]=(int)quick_pay_buttons.Data[0];
            m_host.ParentGroup.RootPart.PayPrice[2]=(int)quick_pay_buttons.Data[1];
            m_host.ParentGroup.RootPart.PayPrice[3]=(int)quick_pay_buttons.Data[2];
            m_host.ParentGroup.RootPart.PayPrice[4]=(int)quick_pay_buttons.Data[3];
        }

        public LSL_Types.Vector3 llGetCameraPos()
        {
            m_host.AddScriptLPS(1);
            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero)
                return new LSL_Types.Vector3();
            if (m_host.TaskInventory[invItemID].PermsGranter == LLUUID.Zero)
               return new LSL_Types.Vector3();
            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_TRACK_CAMERA) == 0)
            {
                ShoutError("No permissions to track the camera");
                return new LSL_Types.Vector3();
            }
            ScenePresence presence = World.GetScenePresence(m_host.OwnerID);
            LSL_Types.Vector3 pos = new LSL_Types.Vector3(presence.CameraPosition.x,presence.CameraPosition.y,presence.CameraPosition.z);
            return pos;
        }

        public LSL_Types.Quaternion llGetCameraRot()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llGetCameraRot");
            return new LSL_Types.Quaternion();
        }

        public void llSetPrimURL()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llSetPrimURL");
        }

        public void llRefreshPrimURL()
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llRefreshPrimURL");
        }

        public string llEscapeURL(string url)
        {
            m_host.AddScriptLPS(1);
            try
            {
                return Uri.EscapeUriString(url);
            }
            catch (Exception ex)
            {
                return "llEscapeURL: " + ex.ToString();
            }
        }

        public string llUnescapeURL(string url)
        {
            m_host.AddScriptLPS(1);
            try
            {
                return Uri.UnescapeDataString(url);
            }
            catch (Exception ex)
            {
                return "llUnescapeURL: " + ex.ToString();
            }
        }

        public void llMapDestination(string simname, LSL_Types.Vector3 pos, LSL_Types.Vector3 look_at)
        {
            m_host.AddScriptLPS(1);
            NotImplemented("llMapDestination");
        }

        public void llAddToLandBanList(string avatar, double hours)
        {
            m_host.AddScriptLPS(1);
            LLUUID key;
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                ParcelManager.ParcelAccessEntry entry = new ParcelManager.ParcelAccessEntry();
                if (LLUUID.TryParse(avatar, out key))
                {
                    entry.AgentID = key;
                    entry.Flags = ParcelManager.AccessList.Ban;
                    entry.Time = DateTime.Now.AddHours(hours);
                    land.ParcelAccessList.Add(entry);
                }
            }
        }

        public void llRemoveFromLandPassList(string avatar)
        {
            m_host.AddScriptLPS(1);
            LLUUID key;
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                if (LLUUID.TryParse(avatar, out key))
                {
                    foreach (ParcelManager.ParcelAccessEntry entry in land.ParcelAccessList)
                    {
                        if (entry.AgentID == key && entry.Flags == ParcelManager.AccessList.Access)
                        {
                            land.ParcelAccessList.Remove(entry);
                            break;
                        }
                    }
                }
            }
        }

        public void llRemoveFromLandBanList(string avatar)
        {
            m_host.AddScriptLPS(1);
            LLUUID key;
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                if (LLUUID.TryParse(avatar, out key))
                {
                    foreach (ParcelManager.ParcelAccessEntry entry in land.ParcelAccessList)
                    {
                        if (entry.AgentID == key && entry.Flags == ParcelManager.AccessList.Ban)
                        {
                            land.ParcelAccessList.Remove(entry);
                            break;
                        }
                    }
                }
            }
        }

        public void llSetCameraParams(LSL_Types.list rules)
        {
            m_host.AddScriptLPS(1);

            // our key in the object we are in
            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero) return;

            // the object we are in
            LLUUID objectID = m_host.ParentUUID;
            if (objectID == LLUUID.Zero) return;

            // we need the permission first, to know which avatar we want to set the camera for
            LLUUID agentID = m_host.TaskInventory[invItemID].PermsGranter;
            if (agentID == LLUUID.Zero) return;
            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_CONTROL_CAMERA) == 0) return;

            ScenePresence presence = World.GetScenePresence(agentID);

            // we are not interested in child-agents
            if (presence.IsChildAgent) return;

            SortedDictionary<int, float> parameters = new SortedDictionary<int, float>();
            object[] data = rules.Data;
            for (int i = 0; i < data.Length; ++i) {
                int type = Convert.ToInt32(data[i++]);
                if (i >= data.Length) break; // odd number of entries => ignore the last

                // some special cases: Vector parameters are split into 3 float parameters (with type+1, type+2, type+3)
                switch (type) {
                case ScriptBaseClass.CAMERA_FOCUS:
                case ScriptBaseClass.CAMERA_FOCUS_OFFSET:
                case ScriptBaseClass.CAMERA_POSITION:
                    LSL_Types.Vector3 v = (LSL_Types.Vector3)data[i];
                    parameters.Add(type + 1, (float)v.x);
                    parameters.Add(type + 2, (float)v.y);
                    parameters.Add(type + 3, (float)v.z);
                    break;
                default:
                    // TODO: clean that up as soon as the implicit casts are in
                    if (data[i] is LSL_Types.LSLFloat)
                        parameters.Add(type, (float)((LSL_Types.LSLFloat)data[i]).value);
                    else if (data[i] is LSL_Types.LSLInteger)
                        parameters.Add(type, (float)((LSL_Types.LSLInteger)data[i]).value);
                    else parameters.Add(type, Convert.ToSingle(data[i]));
                    break;
                }
            }
            if (parameters.Count > 0) presence.ControllingClient.SendSetFollowCamProperties(objectID, parameters);
        }

        public void llClearCameraParams()
        {
            m_host.AddScriptLPS(1);

            // our key in the object we are in
            LLUUID invItemID=InventorySelf();
            if (invItemID == LLUUID.Zero) return;

            // the object we are in
            LLUUID objectID = m_host.ParentUUID;
            if (objectID == LLUUID.Zero) return;

            // we need the permission first, to know which avatar we want to clear the camera for
            LLUUID agentID = m_host.TaskInventory[invItemID].PermsGranter;
            if (agentID == LLUUID.Zero) return;
            if ((m_host.TaskInventory[invItemID].PermsMask & ScriptBaseClass.PERMISSION_CONTROL_CAMERA) == 0) return;

            ScenePresence presence = World.GetScenePresence(agentID);

            // we are not interested in child-agents
            if (presence.IsChildAgent) return;

            presence.ControllingClient.SendClearFollowCamProperties(objectID);
        }

        public double llListStatistics(int operation, LSL_Types.list src)
        {
            m_host.AddScriptLPS(1);
            LSL_Types.list nums = LSL_Types.list.ToDoubleList(src);
            switch (operation)
            {
                case ScriptBaseClass.LIST_STAT_RANGE:
                    return nums.Range();
                case ScriptBaseClass.LIST_STAT_MIN:
                    return nums.Min();
                case ScriptBaseClass.LIST_STAT_MAX:
                    return nums.Max();
                case ScriptBaseClass.LIST_STAT_MEAN:
                    return nums.Mean();
                case ScriptBaseClass.LIST_STAT_MEDIAN:
                    return nums.Median();
                case ScriptBaseClass.LIST_STAT_NUM_COUNT:
                    return nums.NumericLength();
                case ScriptBaseClass.LIST_STAT_STD_DEV:
                    return nums.StdDev();
                case ScriptBaseClass.LIST_STAT_SUM:
                    return nums.Sum();
                case ScriptBaseClass.LIST_STAT_SUM_SQUARES:
                    return nums.SumSqrs();
                case ScriptBaseClass.LIST_STAT_GEOMETRIC_MEAN:
                    return nums.GeometricMean();
                case ScriptBaseClass.LIST_STAT_HARMONIC_MEAN:
                    return nums.HarmonicMean();
                default:
                    return 0.0;
            }
        }

        public LSL_Types.LSLInteger llGetUnixTime()
        {
            m_host.AddScriptLPS(1);
            return Util.UnixTimeSinceEpoch();
        }

        public LSL_Types.LSLInteger llGetParcelFlags(LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);
            return (int)World.LandChannel.GetLandObject((float)pos.x, (float)pos.y).landData.Flags;
        }

        public LSL_Types.LSLInteger llGetRegionFlags()
        {
            m_host.AddScriptLPS(1);
            IEstateModule estate = World.RequestModuleInterface<IEstateModule>();
            if (estate == null)
                return 67108864;
            return (int)estate.GetRegionFlags();
        }

        public string llXorBase64StringsCorrect(string str1, string str2)
        {
            m_host.AddScriptLPS(1);
            string ret = String.Empty;
            string src1 = llBase64ToString(str1);
            string src2 = llBase64ToString(str2);
            int c = 0;
            for (int i = 0; i < src1.Length; i++)
            {
                ret += src1[i] ^ src2[c];

                c++;
                if (c >= src2.Length)
                    c = 0;
            }
            return llStringToBase64(ret);
        }

        public string llHTTPRequest(string url, LSL_Types.list parameters, string body)
        {
            // Partial implementation: support for parameter flags needed
            //   see http://wiki.secondlife.com/wiki/LlHTTPRequest
            // parameter flags support are implemented in ScriptsHttpRequests.cs
            //   in StartHttpRequest

            m_host.AddScriptLPS(1);
            IHttpRequests httpScriptMod =
                m_ScriptEngine.World.RequestModuleInterface<IHttpRequests>();
            List<string> param = new List<string>();
            foreach (object o in parameters.Data)
            {
                param.Add(o.ToString());
            }

            LLVector3 position = m_host.AbsolutePosition;
            LLVector3 velocity = m_host.Velocity;
            LLQuaternion rotation = m_host.RotationOffset;
            ScenePresence scenePresence = World.GetScenePresence(m_host.ObjectOwner);
            RegionInfo regionInfo = World.RegionInfo;

            Dictionary<string, string> httpHeaders = new Dictionary<string, string>();

            httpHeaders["X-SecondLife-Shard"] = "OpenSim";
            httpHeaders["X-SecondLife-Object-Name"] = m_host.Name;
            httpHeaders["X-SecondLife-Object-Key"] = m_itemID.ToString();
            httpHeaders["X-SecondLife-Region"] = string.Format("{0} ({1}, {2})", regionInfo.RegionName, regionInfo.RegionLocX, regionInfo.RegionLocY);
            httpHeaders["X-SecondLife-Local-Position"] = string.Format("({0:0.000000}, {1:0.000000}, {2:0.000000})", position.X, position.Y, position.Z);
            httpHeaders["X-SecondLife-Local-Velocity"] = string.Format("({0:0.000000}, {1:0.000000}, {2:0.000000})", velocity.X, velocity.Y, velocity.Z);
            httpHeaders["X-SecondLife-Local-Rotation"] = string.Format("({0:0.000000}, {1:0.000000}, {2:0.000000}, {3:0.000000})", rotation.X, rotation.Y, rotation.Z, rotation.W);
            httpHeaders["X-SecondLife-Owner-Name"] = scenePresence == null ? string.Empty : scenePresence.ControllingClient.Name;
            httpHeaders["X-SecondLife-Owner-Key"] = m_host.ObjectOwner.ToString();

            LLUUID reqID = httpScriptMod.
                StartHttpRequest(m_localID, m_itemID, url, param, httpHeaders, body);

            if (reqID != LLUUID.Zero)
                return reqID.ToString();
            else
                return null;
        }

        public void llResetLandBanList()
        {
            m_host.AddScriptLPS(1);
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                foreach (ParcelManager.ParcelAccessEntry entry in land.ParcelAccessList)
                {
                    if (entry.Flags == ParcelManager.AccessList.Ban)
                    {
                        land.ParcelAccessList.Remove(entry);
                    }
                }
            }
        }

        public void llResetLandPassList()
        {
            m_host.AddScriptLPS(1);
            LandData land = World.LandChannel.GetLandObject(m_host.AbsolutePosition.X, m_host.AbsolutePosition.Y).landData;
            if (land.OwnerID == m_host.OwnerID)
            {
                foreach (ParcelManager.ParcelAccessEntry entry in land.ParcelAccessList)
                {
                    if (entry.Flags == ParcelManager.AccessList.Access)
                    {
                        land.ParcelAccessList.Remove(entry);
                    }
                }
            }
        }

        public LSL_Types.LSLInteger llGetParcelPrimCount(LSL_Types.Vector3 pos, int category, int sim_wide)
        {
            m_host.AddScriptLPS(1);

            LandData land = World.GetLandData((float)pos.x, (float)pos.y);

            if (land == null)
            {
                return 0;
            }

            else
            {
                if (sim_wide == 1)
                {
                    if (category == 0)
                    {
                        return land.SimwidePrims;
                    }

                    else
                    {
                        //public int simwideArea = 0;
                        return 0;
                    }
                }

                else
                {
                    if (category == 0)//Total Prims
                    {
                        return 0;//land.
                    }

                    else if (category == 1)//Owner Prims
                    {
                        return land.OwnerPrims;
                    }

                    else if (category == 2)//Group Prims
                    {
                        return land.GroupPrims;
                    }

                    else if (category == 3)//Other Prims
                    {
                        return land.OtherPrims;
                    }

                    else if (category == 4)//Selected
                    {
                        return land.SelectedPrims;
                    }

                    else if (category == 5)//Temp
                    {
                        return 0;//land.
                    }
                }
            }
            return 0;
        }

        public LSL_Types.list llGetParcelPrimOwners(LSL_Types.Vector3 pos)
        {
            m_host.AddScriptLPS(1);
            LandObject land = (LandObject)World.LandChannel.GetLandObject((float)pos.x, (float)pos.y);
            LSL_Types.list ret = new LSL_Types.list();
            if (land != null)
            {
                foreach (KeyValuePair<LLUUID, int> d in land.getLandObjectOwners())
                {
                    ret.Add(d.Key.ToString());
                    ret.Add(d.Value);
                }
            }
            return ret;
        }

        public LSL_Types.LSLInteger llGetObjectPrimCount(string object_id)
        {
            m_host.AddScriptLPS(1);
            SceneObjectPart part = World.GetSceneObjectPart(new LLUUID(object_id));
            if (part == null)
            {
                return 0;
            }
            else
            {
                return part.ParentGroup.Children.Count;
            }
        }

        public LSL_Types.LSLInteger llGetParcelMaxPrims(LSL_Types.Vector3 pos, int sim_wide)
        {
            m_host.AddScriptLPS(1);
            // Alondria: This currently just is utilizing the normal grid's 0.22 prims/m2 calculation
            // Which probably will be irrelevent in OpenSim....
            LandData land = World.GetLandData((float)pos.x, (float)pos.y);

            float bonusfactor = (float)World.RegionInfo.RegionSettings.ObjectBonus;

            if (land == null)
            {
                return 0;
            }

            if (sim_wide == 1)
            {
                decimal v = land.SimwideArea * (decimal)(0.22) * (decimal)bonusfactor;

                return (int)v;
            }

            else
            {
                decimal v = land.Area * (decimal)(0.22) * (decimal)bonusfactor;

                return (int)v;
            }

        }

        public LSL_Types.list llGetParcelDetails(LSL_Types.Vector3 pos, LSL_Types.list param)
        {
            m_host.AddScriptLPS(1);
            LandData land = World.GetLandData((float)pos.x, (float)pos.y);
            if (land == null)
            {
                return new LSL_Types.list(0);
            }
            LSL_Types.list ret = new LSL_Types.list();
            foreach (object o in param.Data)
            {
                switch (o.ToString())
                {
                    case "0":
                        ret = ret + new LSL_Types.list(land.Name);
                        break;
                    case "1":
                        ret = ret + new LSL_Types.list(land.Description);
                        break;
                    case "2":
                        ret = ret + new LSL_Types.list(land.OwnerID.ToString());
                        break;
                    case "3":
                        ret = ret + new LSL_Types.list(land.GroupID.ToString());
                        break;
                    case "4":
                        ret = ret + new LSL_Types.list(land.Area);
                        break;
                    default:
                        ret = ret + new LSL_Types.list(0);
                        break;
                }
            }
            return ret;
        }

        public void llSetLinkTexture(int linknumber, string texture, int face)
        {
            m_host.AddScriptLPS(1);

            if (m_host.ParentGroup == null)
                return;

            SceneObjectPart part = m_host.ParentGroup.GetLinkNumPart(linknumber);

            if (part == null)
                return;

            SetTexture(part, texture, face);
        }

        public string llStringTrim(string src, int type)
        {
            m_host.AddScriptLPS(1);
            if (type == (int)ScriptBaseClass.STRING_TRIM_HEAD) { return src.TrimStart(); }
            if (type == (int)ScriptBaseClass.STRING_TRIM_TAIL) { return src.TrimEnd(); }
            if (type == (int)ScriptBaseClass.STRING_TRIM) { return src.Trim(); }
            return src;
        }

        public LSL_Types.list llGetObjectDetails(string id, LSL_Types.list args)
        {
            m_host.AddScriptLPS(1);
            LSL_Types.list ret = new LSL_Types.list();
            LLUUID key = new LLUUID();
            if (LLUUID.TryParse(id, out key))
            {
                ScenePresence av = World.GetScenePresence(key);

                if (av != null)
                {
                    foreach (object o in args.Data)
                    {
                        switch (o.ToString())
                        {
                            case "1":
                                ret.Add(av.Firstname + " " + av.Lastname);
                                break;
                            case "2":
                                ret.Add("");
                                break;
                            case "3":
                                ret.Add(new LSL_Types.Vector3((double)av.AbsolutePosition.X, (double)av.AbsolutePosition.Y, (double)av.AbsolutePosition.Z));
                                break;
                            case "4":
                                ret.Add(new LSL_Types.Quaternion((double)av.Rotation.x, (double)av.Rotation.y, (double)av.Rotation.z, (double)av.Rotation.w));
                                break;
                            case "5":
                                ret.Add(new LSL_Types.Vector3(av.Velocity.X,av.Velocity.Y,av.Velocity.Z));
                                break;
                            case "6":
                                ret.Add(id);
                                break;
                            case "7":
                                ret.Add(LLUUID.Zero.ToString());
                                break;
                            case "8":
                                ret.Add(LLUUID.Zero.ToString());
                                break;
                        }
                    }
                    return ret;
                }
                SceneObjectPart obj = World.GetSceneObjectPart(key);
                if (obj != null)
                {
                    foreach (object o in args.Data)
                    {
                        switch (o.ToString())
                        {
                            case "1":
                                ret.Add(obj.Name);
                                break;
                            case "2":
                                ret.Add(obj.Description);
                                break;
                            case "3":
                                ret.Add(new LSL_Types.Vector3(obj.AbsolutePosition.X,obj.AbsolutePosition.Y,obj.AbsolutePosition.Z));
                                break;
                            case "4":
                                ret.Add(new LSL_Types.Quaternion(obj.RotationOffset.X, obj.RotationOffset.Y, obj.RotationOffset.Z, obj.RotationOffset.W));
                                break;
                            case "5":
                                ret.Add(new LSL_Types.Vector3(obj.Velocity.X, obj.Velocity.Y, obj.Velocity.Z));
                                break;
                            case "6":
                                ret.Add(obj.OwnerID.ToString());
                                break;
                            case "7":
                                ret.Add(obj.GroupID.ToString());
                                break;
                            case "8":
                                ret.Add(obj.CreatorID.ToString());
                                break;
                        }
                    }
                    return ret;
                }
            }
            return new LSL_Types.list();
        }


        internal LLUUID ScriptByName(string name)
        {
            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 10 && item.Name == name)
                    return item.ItemID;
            }
            return LLUUID.Zero;
        }

        internal void ShoutError(string msg)
        {
            llShout(ScriptBaseClass.DEBUG_CHANNEL, msg);
        }



        internal void NotImplemented(string command)
        {
            if (throwErrorOnNotImplemented)
                throw new NotImplementedException("Command not implemented: " + command);
        }

        internal void Deprecated(string command)
        {
            throw new Exception("Command deprecated: " + command);
        }

        internal void LSLError(string msg)
        {
            throw new Exception("LSL Runtime Error: " + msg);
        }

        public delegate void AssetRequestCallback(LLUUID assetID, AssetBase asset);
        private void WithNotecard(LLUUID assetID, AssetRequestCallback cb)
        {
            World.AssetCache.GetAsset(assetID, delegate(LLUUID i, AssetBase a) { cb(i, a); }, false);
        }

        public string llGetNumberOfNotecardLines(string name)
        {
            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 7 && item.Name == name)
                {
                    LLUUID tid = AsyncCommands.
                            DataserverPlugin.RegisterRequest(m_localID,
                            m_itemID, item.AssetID.ToString());
                    if (NotecardCache.IsCached(item.AssetID))
                    {
                        AsyncCommands.
                        DataserverPlugin.DataserverReply(item.AssetID.ToString(),
                                NotecardCache.GetLines(item.AssetID).ToString());
                        return tid.ToString();
                    }
                    WithNotecard(item.AssetID, delegate (LLUUID id, AssetBase a)
                    {
                        System.Text.ASCIIEncoding enc =
                            new System.Text.ASCIIEncoding();
                        string data = enc.GetString(a.Data);
                        //Console.WriteLine(data);
                        NotecardCache.Cache(id, data);
                        AsyncCommands.
                                DataserverPlugin.DataserverReply(id.ToString(),
                                NotecardCache.GetLines(id).ToString());
                    });

                    return tid.ToString();
                }
            }
            return LLUUID.Zero.ToString();
        }

        public string llGetNotecardLine(string name, int line)
        {
            m_host.AddScriptLPS(1);

            foreach (TaskInventoryItem item in m_host.TaskInventory.Values)
            {
                if (item.Type == 7 && item.Name == name)
                {
                    LLUUID tid = AsyncCommands.
                            DataserverPlugin.RegisterRequest(m_localID,
                            m_itemID, item.AssetID.ToString());
                    if (NotecardCache.IsCached(item.AssetID))
                    {
                        AsyncCommands.
                        DataserverPlugin.DataserverReply(item.AssetID.ToString(),
                                NotecardCache.GetLine(item.AssetID, line));
                        return tid.ToString();
                    }
                    WithNotecard(item.AssetID, delegate (LLUUID id, AssetBase a)
                    {
                        System.Text.ASCIIEncoding enc =
                            new System.Text.ASCIIEncoding();
                        string data = enc.GetString(a.Data);
                        //Console.WriteLine(data);
                        NotecardCache.Cache(id, data);
                        AsyncCommands.
                                DataserverPlugin.DataserverReply(id.ToString(),
                                NotecardCache.GetLine(id, line));
                    });

                    return tid.ToString();
                }
            }

            return String.Empty;
        }

    }

    public class NotecardCache
    {
        private class Notecard
        {
            public string[] text;
            public DateTime lastRef;
        }

        private static Dictionary<LLUUID, Notecard> m_Notecards =
                new Dictionary<LLUUID, Notecard>();

        public static void Cache(LLUUID assetID, string text)
        {
            CacheCheck();

            lock (m_Notecards)
            {
                if (m_Notecards.ContainsKey(assetID))
                    return;

                Notecard nc = new Notecard();
                nc.lastRef = DateTime.Now;
                nc.text = ParseText(text.Replace("\r", "").Split('\n'));
                m_Notecards[assetID] = nc;
            }
        }

        private static string[] ParseText(string[] input)
        {
            int idx = 0;
            int level = 0;
            List<string> output = new List<string>();
            string[] words;

            while (idx < input.Length)
            {
                if (input[idx] == "{")
                {
                    level++;
                    idx++;
                    continue;
                }

                if (input[idx]== "}")
                {
                    level--;
                    idx++;
                    continue;
                }

                switch (level)
                {
                case 0:
                    words = input[idx].Split(' '); // Linden text ver
                    int version = int.Parse(words[3]);
                    if (version != 2)
                        return new String[0];
                    break;
                case 1:
                    words = input[idx].Split(' ');
                    if (words[0] == "LLEmbeddedItems")
                        break;
                    if (words[0] == "Text")
                    {
                        int len = int.Parse(words[2]);
                        idx++;

                        int count = -1;

                        while (count < len)
                        {
                            // int l = input[idx].Length;
                            string ln = input[idx];

                            int need = len-count-1;
                            if (ln.Length > need)
                                ln = ln.Substring(0, need);

                            output.Add(ln);
                            count += ln.Length + 1;
                            idx++;
                        }

                        return output.ToArray();
                    }
                    break;
                case 2:
                    words = input[idx].Split(' '); // count
                    if (words[0] == "count")
                    {
                        int c = int.Parse(words[1]);
                        if (c > 0)
                            return new String[0];
                        break;
                    }
                    break;
                }
                idx++;
            }
            return output.ToArray();
        }

        public static bool IsCached(LLUUID assetID)
        {
            lock (m_Notecards)
            {
                return m_Notecards.ContainsKey(assetID);
            }
        }

        public static int GetLines(LLUUID assetID)
        {
            if (!IsCached(assetID))
                return -1;

            lock (m_Notecards)
            {
                m_Notecards[assetID].lastRef = DateTime.Now;
                return m_Notecards[assetID].text.Length;
            }
        }

        public static string GetLine(LLUUID assetID, int line)
        {
            if (line < 0)
                return "";

            string data;

            if (!IsCached(assetID))
                return "";

            lock (m_Notecards)
            {
                m_Notecards[assetID].lastRef = DateTime.Now;

                if (line >= m_Notecards[assetID].text.Length)
                    return "\n\n\n";

                data = m_Notecards[assetID].text[line];
                if (data.Length > 255)
                    data = data.Substring(0, 255);

                return data;
            }
        }

        public static void CacheCheck()
        {
            foreach (LLUUID key in new List<LLUUID>(m_Notecards.Keys))
            {
                Notecard nc = m_Notecards[key];
                if (nc.lastRef.AddSeconds(30) < DateTime.Now)
                    m_Notecards.Remove(key);
            }
        }
    }
}