1 files changed, 32 insertions, 56 deletions

diff --git a/OpenSim/Region/CoreModules/World/Wind/WindModule.cs b/OpenSim/Region/CoreModules/World/Wind/WindModule.cs
index 35014f5..a1fff62 100644
--- a/OpenSim/Region/CoreModules/World/Wind/WindModule.cs
+++ b/OpenSim/Region/CoreModules/World/Wind/WindModule.cs
@@ -46,11 +46,13 @@ namespace OpenSim.Region.CoreModules
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         private uint m_frame = 0;
-        private uint m_frameLastUpdateClientArray = 0;
+        private int m_dataVersion = 0;
+        private int m_regionID = 0;
         private int m_frameUpdateRate = 150;
         //private Random m_rndnums = new Random(Environment.TickCount);
         private Scene m_scene = null;
         private bool m_ready = false;
+        private bool m_inUpdate = false;
 
         private bool m_enabled = false;
         private IConfig m_windConfig;
@@ -96,7 +98,6 @@ namespace OpenSim.Region.CoreModules
 
             m_scene = scene;
             m_frame = 0;
-
             // Register all the Wind Model Plug-ins
             foreach (IWindModelPlugin windPlugin in AddinManager.GetExtensionObjects("/OpenSim/WindModule", false))
             {
@@ -118,7 +119,6 @@ namespace OpenSim.Region.CoreModules
                 }
             }
 
-
             // if the plug-in wasn't found, default to no wind.
             if (m_activeWindPlugin == null)
             {
@@ -154,14 +154,14 @@ namespace OpenSim.Region.CoreModules
 
             // Register event handlers for when Avatars enter the region, and frame ticks
             m_scene.EventManager.OnFrame += WindUpdate;
-            m_scene.EventManager.OnMakeRootAgent += OnAgentEnteredRegion;
 
-            // Register the wind module 
+            // Register the wind module
             m_scene.RegisterModuleInterface<IWindModule>(this);
 
             // Generate initial wind values
-            GenWindPos();
-
+            GenWind();
+            // hopefully this will not be the same for all regions on same instance
+            m_dataVersion = (int)m_scene.AllocateLocalId();
             // Mark Module Ready for duty
             m_ready = true;
         }
@@ -184,7 +184,7 @@ namespace OpenSim.Region.CoreModules
 
             //  Remove our hooks
             m_scene.EventManager.OnFrame -= WindUpdate;
-            m_scene.EventManager.OnMakeRootAgent -= OnAgentEnteredRegion;
+//            m_scene.EventManager.OnMakeRootAgent -= OnAgentEnteredRegion;
 
         }
 
@@ -351,7 +351,7 @@ namespace OpenSim.Region.CoreModules
         #region IWindModule Methods
 
         /// <summary>
-        /// Retrieve the wind speed at the given region coordinate.  This 
+        /// Retrieve the wind speed at the given region coordinate.  This
         /// implimentation ignores Z.
         /// </summary>
         /// <param name="x">0...255</param>
@@ -396,7 +396,7 @@ namespace OpenSim.Region.CoreModules
 
         public string WindActiveModelPluginName
         {
-            get 
+            get
             {
                 if (m_activeWindPlugin != null)
                 {
@@ -416,67 +416,43 @@ namespace OpenSim.Region.CoreModules
         /// </summary>
         public void WindUpdate()
         {
-            if (((m_frame++ % m_frameUpdateRate) != 0) || !m_ready)
-            {
+            if ((!m_ready || m_inUpdate || (m_frame++ % m_frameUpdateRate) != 0))
                 return;
-            }
-
-            GenWindPos();
-
-            SendWindAllClients();
-        }
 
-        public void OnAgentEnteredRegion(ScenePresence avatar)
-        {
-            if (m_ready)
+            m_inUpdate = true;
+            Util.FireAndForget(delegate
             {
-                if (m_activeWindPlugin != null)
+                try
                 {
-                    // Ask wind plugin to generate a LL wind array to be cached locally
-                    // Try not to update this too often, as it may involve array copies
-                    if (m_frame >= (m_frameLastUpdateClientArray + m_frameUpdateRate))
+                    GenWind();
+                    m_scene.ForEachClient(delegate(IClientAPI client)
                     {
-                        windSpeeds = m_activeWindPlugin.WindLLClientArray();
-                        m_frameLastUpdateClientArray = m_frame;
-                    }
-                }
-
-                avatar.ControllingClient.SendWindData(windSpeeds);
-            }
-        }
+                        client.SendWindData(m_dataVersion, windSpeeds);
+                    });
 
-        private void SendWindAllClients()
-        {
-            if (m_ready)
-            {
-                if (m_scene.GetRootAgentCount() > 0)
+                }
+                finally
                 {
-                    // Ask wind plugin to generate a LL wind array to be cached locally
-                    // Try not to update this too often, as it may involve array copies
-                    if (m_frame >= (m_frameLastUpdateClientArray + m_frameUpdateRate))
-                    {
-                        windSpeeds = m_activeWindPlugin.WindLLClientArray();
-                        m_frameLastUpdateClientArray = m_frame;
-                    }
-
-                    m_scene.ForEachRootClient(delegate(IClientAPI client)
-                    {
-                        client.SendWindData(windSpeeds);
-                    });
+                    m_inUpdate = false;
                 }
-            }
+            },
+            null, "WindModuleUpdate");
         }
+
         /// <summary>
-        /// Calculate the sun's orbital position and its velocity.
+        /// Calculate new wind
+        /// returns false if no change
         /// </summary>
 
-        private void GenWindPos()
+        private bool GenWind()
         {
-            if (m_activeWindPlugin != null)
+            if (m_activeWindPlugin != null && m_activeWindPlugin.WindUpdate(m_frame))
             {
-                // Tell Wind Plugin to update it's wind data
-                m_activeWindPlugin.WindUpdate(m_frame);
+                windSpeeds = m_activeWindPlugin.WindLLClientArray();
+                m_dataVersion++;
+                return true;
             }
+            return false;
         }
     }
 }