* Adding EntityManager.cs

* Not referenced anywhere yet.
* Designed to replace Dictionary<UUID,EntityBase> within SceneGraph.Entities
* Allows indexed access and better handling of locks.
* Someone needs to implement IEnumerable on this before we can switch it over.

OpenSim/Region/Environment/Scenes/EntityManager.cs

@@ -0,0 +1,148 @@
+using System;
+using System.Collections.Generic;
+using OpenMetaverse;
+
+namespace OpenSim.Region.Environment.Scenes
+{
+    public class EntityManager
+    {
+        private readonly Dictionary<UUID,EntityBase> m_eb_uuid = new Dictionary<UUID, EntityBase>();
+        private readonly Dictionary<uint, EntityBase> m_eb_localID = new Dictionary<uint, EntityBase>();
+        private readonly Object m_lock = new Object();
+
+        [Obsolete("Use Add() instead.")]
+        public void Add(UUID id, EntityBase eb)
+        {
+            Add(eb);
+        }
+
+        public void Add(EntityBase entity)
+        {
+            lock(m_lock)
+            {
+                m_eb_uuid.Add(entity.UUID, entity);
+                m_eb_localID.Add(entity.LocalId, entity);
+            }
+        }
+
+        public void InsertOrReplace(EntityBase entity)
+        {
+            lock(m_lock)
+            {
+                m_eb_uuid[entity.UUID] = entity;
+                m_eb_localID[entity.LocalId] = entity;
+            }
+        }
+
+        public void Clear()
+        {
+            lock (m_lock)
+            {
+                m_eb_uuid.Clear();
+                m_eb_localID.Clear();
+            }
+        }
+
+        public int Count
+        {
+            get
+            {
+                lock (m_lock)
+                {
+                    return m_eb_uuid.Count;
+                }
+            }
+        }
+
+        public bool ContainsKey(UUID id)
+        {
+            lock(m_lock)
+            {
+                return m_eb_uuid.ContainsKey(id);
+            }
+        }
+
+        public bool ContainsKey(uint localID)
+        {
+            lock (m_lock)
+            {
+                return m_eb_localID.ContainsKey(localID);
+            }
+        }
+
+        public void Remove(uint localID)
+        {
+            lock(m_lock)
+            {
+                m_eb_uuid.Remove(m_eb_localID[localID].UUID);
+                m_eb_localID.Remove(localID);
+            }
+        }
+
+        public void Remove(UUID id)
+        {
+            lock(m_lock)
+            {
+                m_eb_localID.Remove(m_eb_uuid[id].LocalId);
+                m_eb_uuid.Remove(id);
+            }
+        }
+
+        public List<EntityBase> GetAllByType<T>()
+        {
+            List<EntityBase> tmp = new List<EntityBase>();
+
+            lock(m_lock)
+            {
+                foreach (KeyValuePair<UUID, EntityBase> pair in m_eb_uuid)
+                {
+                    if(pair.Value is T)
+                    {
+                        tmp.Add(pair.Value);
+                    }
+                }
+            }
+
+            return tmp;
+        }
+
+        [Obsolete("Please used indexed access to this instead. Indexes can be accessed via EntitiesManager[index]. LocalID and UUID are supported.")]
+        public List<EntityBase> GetEntities()
+        {
+            lock (m_lock)
+            {
+                return new List<EntityBase>(m_eb_uuid.Values);
+            }
+        }
+
+        public EntityBase this[UUID id]
+        {
+            get
+            {
+                lock (m_lock)
+                {
+                    return m_eb_uuid[id];
+                }
+            }
+            set
+            {
+                InsertOrReplace(value);
+            }
+        }
+
+        public EntityBase this[uint localID]
+        {
+            get
+            {
+                lock (m_lock)
+                {
+                    return m_eb_localID[localID];
+                }
+            }
+            set
+            {
+                InsertOrReplace(value);
+            }
+        }
+    }
+}