From 6ac9c9c97277e510cbe7eb908f3cf7883a01c1c3 Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Thu, 3 Apr 2014 01:14:39 +0100
Subject: refactor: Use m_sittingAvatars to maintain the list of sitting
 avatars instead of two independent structures that do exactly the same thing

m_sittingAvatars code also already properly handles locking to avoid races.
---
 .../Region/Framework/Scenes/SceneObjectGroup.cs    | 54 +++-------------------
 1 file changed, 6 insertions(+), 48 deletions(-)

(limited to 'OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs')

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 7ede725..529bc9f 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -121,7 +121,6 @@ namespace OpenSim.Region.Framework.Scenes
         private bool m_hasGroupChanged = false;
         private long timeFirstChanged;
         private long timeLastChanged;
-        private List<ScenePresence> m_linkedAvatars = new List<ScenePresence>();
 
         /// <summary>
         /// This indicates whether the object has changed such that it needs to be repersisted to permenant storage
@@ -484,7 +483,7 @@ namespace OpenSim.Region.Framework.Scenes
                             m_rootPart.KeyframeMotion.StartCrossingCheck();
 
                         bool canCross = true;
-                        foreach (ScenePresence av in m_linkedAvatars)
+                        foreach (ScenePresence av in GetSittingAvatars())
                         {
                             // We need to cross these agents. First, let's find
                             // out if any of them can't cross for some reason.
@@ -511,7 +510,7 @@ namespace OpenSim.Region.Framework.Scenes
 
                             List<avtocrossInfo> avsToCross = new List<avtocrossInfo>();
 
-                            foreach (ScenePresence av in m_linkedAvatars)
+                            foreach (ScenePresence av in GetSittingAvatars())
                             {
                                 avtocrossInfo avinfo = new avtocrossInfo();
                                 SceneObjectPart parentPart = m_scene.GetSceneObjectPart(av.ParentID);
@@ -838,7 +837,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// No avatar should appear more than once in this list.
         /// Do not manipulate this list directly - use the Add/Remove sitting avatar methods on SceneObjectPart.
         /// </remarks>
-        protected internal List<UUID> m_sittingAvatars = new List<UUID>();
+        protected internal List<ScenePresence> m_sittingAvatars = new List<ScenePresence>();
 
         #endregion
 
@@ -1281,46 +1280,6 @@ namespace OpenSim.Region.Framework.Scenes
             part.ParentID = m_rootPart.LocalId;
             part.ClearUndoState();
         }
-        /// <summary>
-        /// Add the avatar to this linkset (avatar is sat).
-        /// </summary>
-        /// <param name="agentID"></param>
-        public void AddAvatar(UUID agentID)
-        {
-            ScenePresence presence;
-            if (m_scene.TryGetScenePresence(agentID, out presence))
-            {
-                if (!m_linkedAvatars.Contains(presence))
-                {
-                    m_linkedAvatars.Add(presence);
-                }
-            }
-        }
-
-        /// <summary>
-        /// Delete the avatar from this linkset (avatar is unsat).
-        /// </summary>
-        /// <param name="agentID"></param>
-        public void DeleteAvatar(UUID agentID)
-        {
-            ScenePresence presence;
-            if (m_scene.TryGetScenePresence(agentID, out presence))
-            {
-                if (m_linkedAvatars.Contains(presence))
-                {
-                    m_linkedAvatars.Remove(presence);
-                }
-            }
-        }
-
-        /// <summary>
-        /// Returns the list of linked presences (avatars sat on this group)
-        /// </summary>
-        /// <param name="agentID"></param>
-        public List<ScenePresence> GetLinkedAvatars()
-        {
-            return m_linkedAvatars;
-        }
 
         public ushort GetTimeDilation()
         {
@@ -1714,8 +1673,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             dupe.Backup = false;
             dupe.m_parts = new MapAndArray<OpenMetaverse.UUID, SceneObjectPart>();
-            dupe.m_sittingAvatars = new List<UUID>();
-            dupe.m_linkedAvatars = new List<ScenePresence>();
+            dupe.m_sittingAvatars = new List<ScenePresence>();
             dupe.CopyRootPart(m_rootPart, OwnerID, GroupID, userExposed);
             dupe.m_rootPart.LinkNum = m_rootPart.LinkNum;
 
@@ -3833,10 +3791,10 @@ namespace OpenSim.Region.Framework.Scenes
         /// down after it move one place down the list.
         /// </remarks>
         /// <returns>A list of the sitting avatars.  Returns an empty list if there are no sitting avatars.</returns>
-        public List<UUID> GetSittingAvatars()
+        public List<ScenePresence> GetSittingAvatars()
         {
             lock (m_sittingAvatars)
-                return new List<UUID>(m_sittingAvatars);
+                return new List<ScenePresence>(m_sittingAvatars);
         }
 
         /// <summary>
-- 
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