Track logged in state and nearby avatars

Programs/examples/PlexView/api/UserMod.cs

@@ -51,9 +51,6 @@ namespace PlexView
 					msg.Add("sessionID", logout.sessionID);
 					return msg;
 				}
-
-
-
 			};
 		}
 	}

Programs/examples/PlexView/modules/NearbyAvatarTracker.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using OpenMetaverse;
+
+namespace PlexView
+{
+	public class NearbyAvatarTracker
+	{
+		private User user;
+		private Dictionary<uint, Avatar> nearbyAvatars = new Dictionary<uint, Avatar>();
+
+		public NearbyAvatarTracker(User user)
+		{
+			this.user = user;
+			this.user.Objects.AvatarUpdate += new EventHandler<AvatarUpdateEventArgs>(Objects_AvatarUpdate);
+			this.user.Objects.KillObject += new EventHandler<KillObjectEventArgs>(Objects_KillObject);
+			this.user.Self.TeleportProgress += new EventHandler<TeleportEventArgs>(Self_TeleportProgress);
+			this.user.Objects.ObjectUpdate += new EventHandler<PrimEventArgs>(Objects_ObjectUpdate);
+		}
+
+		public Dictionary<uint, Avatar> GetNearbyAvatars()
+		{
+			return nearbyAvatars;
+		}
+
+		#region eventHandlers
+
+		void Self_TeleportProgress(object sender, TeleportEventArgs e)
+		{
+			if (e.Status == TeleportStatus.Finished)
+			{
+				this.nearbyAvatars.Clear();
+			}
+		}
+
+		void Objects_AvatarUpdate(object sender, AvatarUpdateEventArgs e)
+		{
+			// Check if we already know about this avatar. If not, add it and announce the callback.
+			// Otherwise just update the cache with the new information (e.g. changed position)
+			if (!this.nearbyAvatars.ContainsKey(e.Avatar.LocalID))
+			{
+				lock(this.nearbyAvatars) this.nearbyAvatars.Add(e.Avatar.LocalID, e.Avatar);
+				//@todo trigger avatar added event
+			}
+			else
+			{
+				lock(this.nearbyAvatars) this.nearbyAvatars[e.Avatar.LocalID] = e.Avatar;
+			}
+		}
+
+		void Objects_ObjectUpdate(object sender, PrimEventArgs e)
+		{
+			// If we know of this avatar, update its position and rotation, and send an AvatarUpdated callback.
+			if (this.nearbyAvatars.ContainsKey(e.Prim.LocalID))
+			{
+				Avatar avatar;
+				lock (this.nearbyAvatars) avatar = this.nearbyAvatars[e.Prim.LocalID];
+				avatar.Position = e.Prim.Position;
+				avatar.Rotation = e.Prim.Rotation;
+			}
+		}
+		
+		void Objects_KillObject(object sender, KillObjectEventArgs e)
+		{
+			// If we know of this avatar, remove it and announce its loss.
+			lock (this.nearbyAvatars)
+			{
+				if (nearbyAvatars.ContainsKey(e.ObjectLocalID))
+				{
+					Avatar avatar = this.nearbyAvatars[e.ObjectLocalID];
+					this.nearbyAvatars.Remove(e.ObjectLocalID);
+					//@todo trigger avatar removed event
+				}
+			}
+		}
+
+		#endregion
+	}
+}
+

Programs/examples/PlexView/types/User.cs

@@ -40,6 +40,10 @@ namespace PlexView
 		public readonly Guid sessionID;
 		public readonly Creds creds;
 
+		private bool m_loggedIn = false;
+
+		private NearbyAvatarTracker tracker;
+
 		//@todo Instances of the client class should only be created by the ClientMgr
 		public User(Creds creds)
 		{
@@ -61,6 +65,7 @@ namespace PlexView
 			sessionID = Guid.NewGuid();
 			Settings.LOGIN_SERVER = creds.gridURL;
 			this.creds = creds;
+			tracker = new NearbyAvatarTracker(this);
 		}
 		public void BeginLogin()
 		{
@@ -71,6 +76,7 @@ namespace PlexView
                 {
                     //@todo login successfull
 					Console.WriteLine ("Login Success for user "+GetAvatarName());
+					this.m_loggedIn = true;
 					//send e.Message
 				}
 				else if (e.Status == LoginStatus.Failed)
@@ -78,6 +84,7 @@ namespace PlexView
                     //@todo login failure
 					Console.WriteLine ("Login Failure");
 					//send e.FailReason
+					this.m_loggedIn = false;
                 }
 			};
 
@@ -103,8 +110,9 @@ namespace PlexView
 			}
 		}
 		
-//		public bool IsLoggedIn()
-//		{
-//		}
+		public bool IsLoggedIn()
+		{
+			return m_loggedIn;
+		}
 	}
 }