5 files changed, 358 insertions, 1 deletions

diff --git a/OpenSim/Framework/IClientAPI.cs b/OpenSim/Framework/IClientAPI.cs
index 1678185..244a2f3 100644
--- a/OpenSim/Framework/IClientAPI.cs
+++ b/OpenSim/Framework/IClientAPI.cs
@@ -558,6 +558,9 @@ namespace OpenSim.Framework
         void SendLayerData(float[] map);
         void SendLayerData(int px, int py, float[] map);
 
+        void SendWindData(float[] map);
+        void SendWindData(int px, int py, float[] map);
+
         void MoveAgentIntoRegion(RegionInfo regInfo, Vector3 pos, Vector3 look);
         void InformClientOfNeighbour(ulong neighbourHandle, IPEndPoint neighbourExternalEndPoint);
         AgentCircuitData RequestClientInfo();
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index 983e1a9..3a90cff 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -1219,8 +1219,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                 LayerDataPacket layerpack = TerrainCompressor.CreateLandPacket(map, patches);
                 layerpack.Header.Zerocoded = true;
-
+               
                 OutPacket(layerpack, ThrottleOutPacketType.Land);
+
             }
             catch (Exception e)
             {
@@ -1229,6 +1230,96 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         }
 
         /// <summary>
+        ///  Send the region heightmap to the client
+        /// </summary>
+        /// <param name="map">heightmap</param>
+        public virtual void SendWindData(float[] map)
+        {
+            ThreadPool.QueueUserWorkItem(new WaitCallback(DoSendWindData), (object)map);
+        }
+
+        /// <summary>
+        /// Send terrain layer information to the client.
+        /// </summary>
+        /// <param name="o"></param>
+        private void DoSendWindData(object o)
+        {
+            float[] map = (float[])o;
+
+            try
+            {
+                for (int y = 0; y < 16; y++)
+                {
+                    // For some terrains, sending more than one terrain patch at once results in a libsecondlife exception
+                    // see http://opensimulator.org/mantis/view.php?id=1662
+                    //for (int x = 0; x < 16; x += 4)
+                    //{
+                    //    SendLayerPacket(map, y, x);
+                    //    Thread.Sleep(150);
+                    //}
+                    for (int x = 0; x < 16; x++)
+                    {
+                        SendWindData(x, y, map);
+                        Thread.Sleep(35);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Warn("[CLIENT]: ClientView.API.cs: SendLayerData() - Failed with exception " + e.ToString());
+            }
+        }
+
+        /// <summary>
+        /// Sends a set of four patches (x, x+1, ..., x+3) to the client
+        /// </summary>
+        /// <param name="map">heightmap</param>
+        /// <param name="px">X coordinate for patches 0..12</param>
+        /// <param name="py">Y coordinate for patches 0..15</param>
+        // private void SendLayerPacket(float[] map, int y, int x)
+        // {
+        //     int[] patches = new int[4];
+        //     patches[0] = x + 0 + y * 16;
+        //     patches[1] = x + 1 + y * 16;
+        //     patches[2] = x + 2 + y * 16;
+        //     patches[3] = x + 3 + y * 16;
+
+        //     Packet layerpack = LLClientView.TerrainManager.CreateLandPacket(map, patches);
+        //     OutPacket(layerpack, ThrottleOutPacketType.Land);
+        // }
+
+        /// <summary>
+        /// Sends a specified patch to a client
+        /// </summary>
+        /// <param name="px">Patch coordinate (x) 0..15</param>
+        /// <param name="py">Patch coordinate (y) 0..15</param>
+        /// <param name="map">heightmap</param>
+        public void SendWindData(int px, int py, float[] map)
+        {
+            try
+            {
+                int[] patches = new int[1];
+                int patchx, patchy;
+                patchx = px;
+                patchy = py;
+
+                patches[0] = patchx + 0 + patchy * 16;
+
+                LayerDataPacket layerpack = TerrainCompressor.CreateWindPacket(map, patches);
+                layerpack.Header.Zerocoded = true;
+
+                OutPacket(layerpack, ThrottleOutPacketType.Wind);
+
+            }
+            catch (Exception e)
+            {
+                m_log.Warn("[client]: ClientView.API.cs: SendLayerData() - Failed with exception " + e.ToString());
+            }
+        }
+
+
+
+        /// <summary>
         /// Tell the client that the given neighbour region is ready to receive a child agent.
         /// </summary>
         /// <param name="neighbourHandle"></param>
diff --git a/OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs b/OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs
index a1d72be..653932c 100644
--- a/OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs
+++ b/OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs
@@ -482,6 +482,9 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
         {
         }
 
+        public virtual void SendWindData(float[] map) { }
+        public virtual void SendWindData(int px, int py, float[] map) { }
+
         public virtual void MoveAgentIntoRegion(RegionInfo regInfo, Vector3 pos, Vector3 look)
         {
         }
diff --git a/OpenSim/Region/Environment/Modules/World/Wind/WindModule.cs b/OpenSim/Region/Environment/Modules/World/Wind/WindModule.cs
new file mode 100644
index 0000000..190cc0b
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/World/Wind/WindModule.cs
@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using OpenMetaverse;
+using Nini.Config;
+using OpenSim.Framework;
+using OpenSim.Region.Environment.Interfaces;
+using OpenSim.Region.Environment.Scenes;
+
+namespace OpenSim.Region.Environment.Modules
+{
+    public class WindModule : IRegionModule
+    {
+
+        private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+
+        private int m_frame = 0;
+        private int m_frame_mod = 150;
+        private Random rndnums = new Random(System.Environment.TickCount);
+        private Scene m_scene = null;
+        private bool ready = false;
+        private float[] windarr = new float[256*256];
+
+        private Dictionary<UUID, ulong> m_rootAgents = new Dictionary<UUID, ulong>();
+
+        // Current time in elpased seconds since Jan 1st 1970
+  
+      
+        public void Initialise(Scene scene, IConfigSource config)
+        {
+
+            m_log.Debug("[WIND] Initializing");
+
+            m_scene = scene;
+
+            m_frame = 0;
+
+
+
+            // Align ticks with Second Life
+
+
+
+            // Just in case they don't have the stanzas
+            try
+            {
+                
+            }
+            catch (Exception e)
+            {
+                m_log.Debug("[WIND] Configuration access failed, using defaults. Reason: " + e.Message);
+                
+            }
+
+            
+            scene.EventManager.OnFrame += WindUpdate;
+            
+            scene.EventManager.OnMakeChildAgent += MakeChildAgent;
+            scene.EventManager.OnAvatarEnteringNewParcel += AvatarEnteringParcel;
+            scene.EventManager.OnClientClosed += ClientLoggedOut;
+
+            GenWindPos();
+
+            ready = true;
+
+
+            
+        }
+
+        public void PostInitialise()
+        {
+        }
+
+        public void Close()
+        {
+            ready = false;
+            //  Remove our hooks
+            m_scene.EventManager.OnFrame -= WindUpdate;
+            // m_scene.EventManager.OnNewClient -= SunToClient;
+            m_scene.EventManager.OnMakeChildAgent -= MakeChildAgent;
+            m_scene.EventManager.OnAvatarEnteringNewParcel -= AvatarEnteringParcel;
+            m_scene.EventManager.OnClientClosed -= ClientLoggedOut;
+        }
+
+        public string Name
+        {
+            get { return "WindModule"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return false; }
+        }
+
+        public void WindToClient(IClientAPI client)
+        {
+            
+                if (ready)
+                {
+                    //if (!sunFixed)
+                        //GenWindPos();    // Generate shared values once
+                    client.SendWindData(windarr);
+                    m_log.Debug("[WIND] Initial update for new client");
+                }
+            
+        }
+
+        public void WindUpdate()
+        {
+            if (((m_frame++ % m_frame_mod) != 0) || !ready)
+            {
+                return;
+            }
+            //m_log.Debug("[WIND]:Regenerating...");
+            GenWindPos();        // Generate shared values once
+
+            int spotxp = 0;
+            int spotyp = 0;
+            int spotxm = 0;
+            int spotym = 0;
+            List<ScenePresence> avatars = m_scene.GetAvatars();
+            foreach (ScenePresence avatar in avatars)
+            {
+                if (!avatar.IsChildAgent)
+                {
+                    spotxp = (int)avatar.CameraPosition.X + 3;
+                    spotxm = (int)avatar.CameraPosition.X - 3;
+                    spotyp = (int)avatar.CameraPosition.Y + 3;
+                    spotym = (int)avatar.CameraPosition.Y - 3;
+                    if (spotxm < 0)
+                        spotxm = 0;
+                    if (spotym < 0)
+                        spotym = 0;
+                    if (spotxp > 255)
+                        spotxp = 255;
+                    if (spotyp > 255)
+                        spotyp = 255;
+                    for (int x = spotxm; x<spotxp; x++)
+                    {
+                        for (int y = spotym; y<spotyp; y++)
+                        {
+                            avatar.ControllingClient.SendWindData(
+                                            x / Constants.TerrainPatchSize, 
+                                            y / Constants.TerrainPatchSize, 
+                                            windarr);
+                        }
+                    }
+                }
+            }
+
+            // set estate settings for region access to sun position
+            //m_scene.RegionInfo.RegionSettings.SunVector = Position;
+            //m_scene.RegionInfo.EstateSettings.sunHour = GetLindenEstateHourFromCurrentTime();
+        }
+        public void ForceWindUpdateToAllClients()
+        {
+            GenWindPos();        // Generate shared values once
+
+            List<ScenePresence> avatars = m_scene.GetAvatars();
+            foreach (ScenePresence avatar in avatars)
+            {
+                if (!avatar.IsChildAgent)
+                    avatar.ControllingClient.SendWindData(windarr);
+            }
+
+            // set estate settings for region access to sun position
+            //m_scene.RegionInfo.RegionSettings.SunVector = Position;
+            //m_scene.RegionInfo.RegionSettings.SunPosition = GetLindenEstateHourFromCurrentTime();
+        }
+        /// <summary>
+        /// Calculate the sun's orbital position and its velocity.
+        /// </summary>
+
+        private void GenWindPos()
+        {
+            windarr = new float[256*256];
+            for (int x = 0; x < 256; x++)
+            {
+                for (int y = 0; y < 256; y++)
+                {
+                    windarr[y*256 + x]= (float)(rndnums.NextDouble()* 2d - 1d);
+                }
+            }
+
+            // m_log.Debug("[SUN] Velocity("+Velocity.X+","+Velocity.Y+","+Velocity.Z+")");
+        }
+
+        private void ClientLoggedOut(UUID AgentId)
+        {
+            lock (m_rootAgents)
+            {
+                if (m_rootAgents.ContainsKey(AgentId))
+                {
+                    m_rootAgents.Remove(AgentId);
+                    m_log.Info("[WIND]: Removing " + AgentId + ". Agent logged out.");
+                }
+            }
+        }
+
+        private void AvatarEnteringParcel(ScenePresence avatar, int localLandID, UUID regionID)
+        {
+            lock (m_rootAgents)
+            {
+                if (m_rootAgents.ContainsKey(avatar.UUID))
+                {
+                    m_rootAgents[avatar.UUID] = avatar.RegionHandle;
+                }
+                else
+                {
+                    m_rootAgents.Add(avatar.UUID, avatar.RegionHandle);
+                    WindToClient(avatar.ControllingClient);
+                }
+            }
+            //m_log.Info("[FRIEND]: " + avatar.Name + " status:" + (!avatar.IsChildAgent).ToString());
+        }
+
+        private void MakeChildAgent(ScenePresence avatar)
+        {
+            lock (m_rootAgents)
+            {
+                if (m_rootAgents.ContainsKey(avatar.UUID))
+                {
+                    if (m_rootAgents[avatar.UUID] == avatar.RegionHandle)
+                    {
+                        m_rootAgents.Remove(avatar.UUID);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
index 623325e..279abdf 100644
--- a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
+++ b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
@@ -396,6 +396,9 @@ namespace OpenSim.Region.Examples.SimpleModule
         {
         }
 
+        public virtual void SendWindData(float[] map) { }
+        public virtual void SendWindData(int px, int py, float[] map) { }
+
         public virtual void MoveAgentIntoRegion(RegionInfo regInfo, Vector3 pos, Vector3 look)
         {
         }