Thanks jonc, for a patch that adds rendering of classic clouds.

First part of Mantis #964, the necessary clouds image will follow separately.

1 files changed, 190 insertions, 0 deletions

diff --git a/OpenSim/Region/CoreModules/World/Cloud/CloudModule.cs b/OpenSim/Region/CoreModules/World/Cloud/CloudModule.cs
new file mode 100644
index 0000000..e164f08
--- /dev/null
+++ b/OpenSim/Region/CoreModules/World/Cloud/CloudModule.cs
@@ -0,0 +1,190 @@
+/*
+ * 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 Nini.Config;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.CoreModules
+{
+    public class CloudModule : ICloudModule
+    {
+        private static readonly log4net.ILog m_log 
+            = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Random m_rndnums = new Random(Environment.TickCount);
+        private Scene m_scene = null;
+        private bool m_ready = false;
+        private bool m_enabled = false;
+        private float m_cloudDensity = 1.0F;
+        private float[] cloudCover = new float[16 * 16];
+
+        private Dictionary<UUID, ulong> m_rootAgents = new Dictionary<UUID, ulong>();
+     
+        public void Initialise(Scene scene, IConfigSource config)
+        {
+            IConfig cloudConfig = config.Configs["Cloud"];
+
+            if (cloudConfig != null)
+            {
+                m_enabled = cloudConfig.GetBoolean("enabled", false);
+                m_cloudDensity = cloudConfig.GetFloat("density", 0.5F);
+            }
+
+            if (m_enabled)
+            {
+
+                m_scene = scene;
+
+                scene.EventManager.OnMakeChildAgent += MakeChildAgent;
+                scene.EventManager.OnAvatarEnteringNewParcel += AvatarEnteringParcel;
+                scene.EventManager.OnClientClosed += ClientLoggedOut;
+                scene.RegisterModuleInterface<ICloudModule>(this);
+
+                GenerateCloudCover();
+
+                m_ready = true;
+
+            }
+
+        }
+
+        public void PostInitialise()
+        {
+        }
+
+        public void Close()
+        {
+            if (m_enabled)
+            {
+                m_ready = false;
+                //  Remove our hooks
+                m_scene.EventManager.OnMakeChildAgent -= MakeChildAgent;
+                m_scene.EventManager.OnAvatarEnteringNewParcel -= AvatarEnteringParcel;
+                m_scene.EventManager.OnClientClosed -= ClientLoggedOut;
+            }
+        }
+
+        public string Name
+        {
+            get { return "CloudModule"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return false; }
+        }
+
+
+        public float CloudCover(int x, int y, int z)
+        {
+            float cover = 0f;
+            x /= 16;
+            y /= 16;
+            if (x < 0) x = 0;
+            if (x > 15) x = 15;
+            if (y < 0) y = 0;
+            if (y > 15) y = 15;
+
+            if (cloudCover != null)
+            {
+                cover = cloudCover[y * 16 + x];
+            }
+
+            return cover;
+        }
+
+        public void CloudsToClient(IClientAPI client)
+        {
+            if (m_ready)
+            {
+                client.SendCloudData(cloudCover);
+            }
+        }
+
+       
+        /// <summary>
+        /// Calculate the cloud cover over the region.
+        /// </summary>
+        private void GenerateCloudCover()
+        {
+            for (int y = 0; y < 16; y++)
+            {
+                for (int x = 0; x < 16; x++)
+                {
+                    cloudCover[y * 16 + x] = (float)(m_rndnums.NextDouble()); // 0 to 1
+                    cloudCover[y * 16 + x] *= m_cloudDensity;
+                }
+            }
+        }
+
+        private void ClientLoggedOut(UUID AgentId)
+        {
+            lock (m_rootAgents)
+            {
+                if (m_rootAgents.ContainsKey(AgentId))
+                {
+                    m_rootAgents.Remove(AgentId);
+                }
+            }
+        }
+
+        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);
+                    CloudsToClient(avatar.ControllingClient);
+                }
+            }
+        }
+
+        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);
+                    }
+                }
+            }
+        }
+    }
+}