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path: root/OpenSim/Region/Environment/Scenes/SceneManager.cs
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/*
 * 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 System.Net;
using System.Reflection;
using libsecondlife;
using log4net;
using OpenSim.Framework;

namespace OpenSim.Region.Environment.Scenes
{
    public delegate void RestartSim(RegionInfo thisregion);

    public class SceneManager
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public event RestartSim OnRestartSim;

        private readonly List<Scene> m_localScenes;
        private Scene m_currentScene = null;

        public List<Scene> Scenes
        {
            get { return m_localScenes; }
        }

        public Scene CurrentScene
        {
            get { return m_currentScene; }
        }

        public Scene CurrentOrFirstScene
        {
            get
            {
                if (m_currentScene == null)
                {
                    return m_localScenes[0];
                }
                else
                {
                    return m_currentScene;
                }
            }
        }

        public SceneManager()
        {
            m_localScenes = new List<Scene>();
        }

        public void Close()
        {
            for (int i = 0; i < m_localScenes.Count; i++)
            {
                m_localScenes[i].Close();
            }
        }

        public void Close(Scene cscene)
        {
            if (m_localScenes.Contains(cscene))
            {
                for (int i = 0; i < m_localScenes.Count; i++)
                {
                    if (m_localScenes[i].Equals(cscene))
                    {
                        m_localScenes[i].Close();
                    }
                }
            }
        }

        public void Add(Scene scene)
        {
            scene.OnRestart += HandleRestart;
            m_localScenes.Add(scene);
        }

        public void HandleRestart(RegionInfo rdata)
        {
            m_log.Error("[SCENEMANAGER]: Got Restart message for region:" + rdata.RegionName + " Sending up to main");
            int RegionSceneElement = -1;
            for (int i = 0; i < m_localScenes.Count; i++)
            {
                if (rdata.RegionName == m_localScenes[i].RegionInfo.RegionName)
                {
                    RegionSceneElement = i;
                }
            }

            // Now we make sure the region is no longer known about by the SceneManager
            // Prevents duplicates.

            if (RegionSceneElement >= 0)
            {
                m_localScenes.RemoveAt(RegionSceneElement);
            }

            // Send signal to main that we're restarting this sim.
            OnRestartSim(rdata);
        }

        public void SendSimOnlineNotification(ulong regionHandle)
        {
            RegionInfo Result = null;

            for (int i = 0; i < m_localScenes.Count; i++)
            {
                if (m_localScenes[i].RegionInfo.RegionHandle == regionHandle)
                {
                    // Inform other regions to tell their avatar about me
                    Result = m_localScenes[i].RegionInfo;
                }
            }
            if (Result != null)
            {
                for (int i = 0; i < m_localScenes.Count; i++)
                {
                    if (m_localScenes[i].RegionInfo.RegionHandle != regionHandle)
                    {
                        // Inform other regions to tell their avatar about me
                        //m_localScenes[i].OtherRegionUp(Result);
                    }
                }
            }
            else
            {
                m_log.Error("[REGION]: Unable to notify Other regions of this Region coming up");
            }
        }

        /// <summary>
        /// Save the prims in the current scene to an xml file in OpenSimulator's original 'xml' format
        /// </summary>
        /// <param name="filename"></param>
        public void SaveCurrentSceneToXml(string filename)
        {
            CurrentOrFirstScene.SavePrimsToXml(filename);
        }

        /// <summary>
        /// Load an xml file of prims in OpenSimulator's original 'xml' file format to the current scene
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="generateNewIDs"></param>
        /// <param name="loadOffset"></param>
        public void LoadCurrentSceneFromXml(string filename, bool generateNewIDs, LLVector3 loadOffset)
        {
            CurrentOrFirstScene.LoadPrimsFromXml(filename, generateNewIDs, loadOffset);
        }

        /// <summary>
        /// Save the prims in the current scene to an xml file in OpenSimulator's current 'xml2' format
        /// </summary>
        /// <param name="filename"></param>
        public void SaveCurrentSceneToXml2(string filename)
        {
            CurrentOrFirstScene.SavePrimsToXml2(filename);
        }

        /// <summary>
        /// Load an xml file of prims in OpenSimulator's current 'xml2' file format to the current scene
        /// </summary>
        public void LoadCurrentSceneFromXml2(string filename)
        {
            CurrentOrFirstScene.LoadPrimsFromXml2(filename);
        }

        /// <summary>
        /// Save the current scene to an OpenSimulator archive.  This archive will eventually include the prim's assets
        /// as well as the details of the prims themselves.
        /// </summary>
        /// <param name="filename"></param>
        public void SaveCurrentSceneToArchive(string filename)
        {
            CurrentOrFirstScene.SavePrimsToArchive(filename);
        }

        /// <summary>
        /// Load an OpenSim archive into the current scene.  This will load both the shapes of the prims and upload
        /// their assets to the asset service.
        /// </summary>
        /// <param name="filename"></param>
        public void LoadArchiveToCurrentScene(string filename)
        {
            CurrentOrFirstScene.LoadPrimsFromArchive(filename);
        }

        [Obsolete("TODO: Remove this warning by 0.7")]
        public bool RunTerrainCmdOnCurrentScene(string[] cmdparams, ref string result)
        {
            m_log.Warn("DEPRECATED: The terrain engine has been replaced with a new terrain plugin module. Please type 'plugin terrain help' for new commands.");
            return false;
        }

        public void SendCommandToPluginModules(string[] cmdparams)
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.SendCommandToPlugins(cmdparams); });
        }

        public void SetBypassPermissionsOnCurrentScene(bool bypassPermissions)
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.ExternalChecks.ExternalChecksSetBypassPermissions(bypassPermissions); });
        }

        private void ForEachCurrentScene(Action<Scene> func)
        {
            if (m_currentScene == null)
            {
                m_localScenes.ForEach(func);
            }
            else
            {
                func(m_currentScene);
            }
        }

        public void RestartCurrentScene()
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.RestartNow(); });
        }

        public void BackupCurrentScene()
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.Backup(); });
        }

        public void HandleAlertCommandOnCurrentScene(string[] cmdparams)
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.HandleAlertCommand(cmdparams); });
        }

        public void SendGeneralMessage(string msg)
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.SendGeneralAlert(msg); });
        }

        public bool TrySetCurrentScene(string regionName)
        {
            if ((String.Compare(regionName, "root") == 0) || (String.Compare(regionName, "..") == 0))
            {
                m_currentScene = null;
                return true;
            }
            else
            {
                Console.WriteLine("Searching for Region: '" + regionName + "'");

                foreach (Scene scene in m_localScenes)
                {
                    if (String.Compare(scene.RegionInfo.RegionName, regionName, true) == 0)
                    {
                        m_currentScene = scene;
                        return true;
                    }
                }

                return false;
            }
        }

        public bool TrySetCurrentScene(LLUUID regionID)
        {
            Console.WriteLine("Searching for Region: '{0}'", regionID.ToString());

            foreach (Scene scene in m_localScenes)
            {
                if (scene.RegionInfo.RegionID == regionID)
                {
                    m_currentScene = scene;
                    return true;
                }
            }

            return false;
        }

        public bool TryGetScene(string regionName, out Scene scene)
        {
            foreach (Scene mscene in m_localScenes)
            {
                if (String.Compare(mscene.RegionInfo.RegionName, regionName, true) == 0)
                {
                    scene = mscene;
                    return true;
                }
            }
            scene = null;
            return false;
        }

        public bool TryGetScene(LLUUID regionID, out Scene scene)
        {
            foreach (Scene mscene in m_localScenes)
            {
                if (mscene.RegionInfo.RegionID == regionID)
                {
                    scene = mscene;
                    return true;
                }
            }
            scene = null;
            return false;
        }

        public bool TryGetScene(uint locX, uint locY, out Scene scene)
        {
            foreach (Scene mscene in m_localScenes)
            {
                if (mscene.RegionInfo.RegionLocX == locX &&
                    mscene.RegionInfo.RegionLocY == locY)
                {
                    scene = mscene;
                    return true;
                }
            }
            scene = null;
            return false;
        }

        public bool TryGetScene(IPEndPoint ipEndPoint, out Scene scene)
        {
            foreach (Scene mscene in m_localScenes)
            {
                if ((mscene.RegionInfo.InternalEndPoint.Equals(ipEndPoint.Address)) &&
                    (mscene.RegionInfo.InternalEndPoint.Port == ipEndPoint.Port))
                {
                    scene = mscene;
                    return true;
                }
            }
            scene = null;
            return false;
        }

        public void SetDebugPacketOnCurrentScene(int newDebug)
        {
            ForEachCurrentScene(delegate(Scene scene)
                                {
                                    List<ScenePresence> scenePresences = scene.GetScenePresences();

                                    foreach (ScenePresence scenePresence in scenePresences)
                                    {
                                        if (!scenePresence.IsChildAgent)
                                        {
                                            m_log.ErrorFormat("Packet debug for {0} {1} set to {2}",
                                                              scenePresence.Firstname,
                                                              scenePresence.Lastname,
                                                              newDebug);

                                            scenePresence.ControllingClient.SetDebug(newDebug);
                                        }
                                    }
                                });
        }

        public List<ScenePresence> GetCurrentSceneAvatars()
        {
            List<ScenePresence> avatars = new List<ScenePresence>();

            ForEachCurrentScene(delegate(Scene scene)
            {
                List<ScenePresence> scenePresences = scene.GetScenePresences();

                foreach (ScenePresence scenePresence in scenePresences)
                {
                    if (!scenePresence.IsChildAgent)
                    {
                        avatars.Add(scenePresence);
                    }
                }
            });

            return avatars;
        }

        public RegionInfo GetRegionInfo(ulong regionHandle)
        {
            foreach (Scene scene in m_localScenes)
            {
                if (scene.RegionInfo.RegionHandle == regionHandle)
                {
                    return scene.RegionInfo;
                }
            }

            return null;
        }

        public void SetCurrentSceneTimePhase(int timePhase)
        {
            ForEachCurrentScene(delegate(Scene scene)
                                {
                                    scene.SetTimePhase(
                                        timePhase)
                                        ;
                                });
        }

        public void ForceCurrentSceneClientUpdate()
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.ForceClientUpdate(); });
        }

        public void HandleEditCommandOnCurrentScene(string[] cmdparams)
        {
            ForEachCurrentScene(delegate(Scene scene) { scene.HandleEditCommand(cmdparams); });
        }

        public bool TryGetAvatar(LLUUID avatarId, out ScenePresence avatar)
        {
            foreach (Scene scene in m_localScenes)
            {
                if (scene.TryGetAvatar(avatarId, out avatar))
                {
                    return true;
                }
            }

            avatar = null;
            return false;
        }

        public bool TryGetAvatarsScene(LLUUID avatarId, out Scene scene)
        {
            ScenePresence avatar = null;
            foreach (Scene mScene in m_localScenes)
            {
                if (mScene.TryGetAvatar(avatarId, out avatar))
                {
                    scene = mScene;
                    return true;
                }
            }

            scene = null;
            return false;
        }

        public void CloseScene(Scene scene)
        {
            m_localScenes.Remove(scene);
            scene.Close();
        }

        public bool TryGetAvatarByName(string avatarName, out ScenePresence avatar)
        {
            foreach (Scene scene in m_localScenes)
            {
                if (scene.TryGetAvatarByName(avatarName, out avatar))
                {
                    return true;
                }
            }

            avatar = null;
            return false;
        }

        public void ForEachScene(Action<Scene> action)
        {
            m_localScenes.ForEach(action);
        }
    }
}