Fixed avatar downloading

Facepunch.Steamworks.Test/Client/FriendsTest.cs

@@ -50,16 +50,23 @@ public void Avatar()
             {
                 Assert.IsTrue( client.IsValid );
 
-                var friend = client.Friends.All.First();
+                ulong id = (ulong)( 76561197960279927 + (new Random().Next() % 10000));
                 bool passed = false;
 
-                client.Friends.GetAvatar( Steamworks.Friends.AvatarSize.Medium, friend.Id, (avatar) =>
+                client.Friends.GetAvatar( Steamworks.Friends.AvatarSize.Medium, id, ( avatar) =>
+                {
+                    if ( avatar == null )
+                    {
+                        Console.WriteLine( "No Avatar" );
+                    }
+                    else
                     {
                         Assert.AreEqual( avatar.Width, 64 );
                         Assert.AreEqual( avatar.Height, 64 );
                         Assert.AreEqual( avatar.Data.Length, avatar.Width * avatar.Height * 4 );
 
                         DrawImage( avatar );
+                    }
                     passed = true;
                 });
 
@@ -105,6 +112,7 @@ public static void DrawImage( Image img )
 
                     var brightness = 1 - ((float)(p.r + p.g + p.b) / (255.0f * 3.0f));
                     var c = (int) ((grad.Length) * brightness);
+                    if ( c > 3 ) c = 3;
                     str += grad[c];
     
                 }

Facepunch.Steamworks/Client.cs

@@ -145,6 +145,7 @@ public override void Update()
 
             RunCallbacks();
             Voice.Update();
+            Friends.Cycle();
 
             base.Update();            
         }

Facepunch.Steamworks/Client/Friends.cs

@@ -292,21 +292,24 @@ public Image GetCachedAvatar( AvatarSize size, ulong steamid )
                     break;
             }
 
+            if ( imageid == 0 || imageid == 2 )
+                return null;
+
             var img = new Image()
             {
                 Id = imageid
             };
 
-            if (imageid != 0 && img.TryLoad(client.native.utils))
+            if ( !img.TryLoad( client.native.utils ) )
-                return img;
-
                 return null;
+
+            return img;
         }
 
 
         /// <summary>
         /// Callback will be called when the avatar is ready. If we fail to get an
-        /// avatar, it'll be called with a null Image.
+        /// avatar, might be called with a null Image.
         /// </summary>
         public void GetAvatar( AvatarSize size, ulong steamid, Action<Image> callback )
         {
@@ -329,17 +332,18 @@ public void GetAvatar( AvatarSize size, ulong steamid, Action<Image> callback )
             PersonaCallbacks.Add( new PersonaCallback
             {
                 SteamId = steamid,
-                Callback = () =>
+                Size = size,
-                {
+                Callback = callback,
-                    callback( GetCachedAvatar(size, steamid) );
+                Time = DateTime.Now
-                }
             });
         }
 
         private class PersonaCallback
         {
             public ulong SteamId;
-            public Action Callback;
+            public AvatarSize Size;
+            public Action<Image> Callback;
+            public DateTime Time;
         }
 
         List<PersonaCallback> PersonaCallbacks = new List<PersonaCallback>();
@@ -357,9 +361,49 @@ public SteamFriend Get( ulong steamid )
             return f;
         }
 
+        internal void Cycle()
+        {
+            if ( PersonaCallbacks.Count == 0 ) return;
+
+            var timeOut = DateTime.Now.AddSeconds( -10 );
+
+            for ( int i = 0; i < PersonaCallbacks.Count; i++ )
+            {
+                var cb = PersonaCallbacks[i];
+
+                // Timeout
+                if ( cb.Time < timeOut )
+                {
+                    if ( cb.Callback != null )
+                    {
+                        cb.Callback( null );
+                    }
+
+                    PersonaCallbacks.Remove( cb );
+                    continue;
+                }
+            }
+        }
+
         private void OnPersonaStateChange( PersonaStateChange_t data )
         {
-            // HUH
+            if ( (data.ChangeFlags & 0x0040) != 0x0040 ) return; // wait for k_EPersonaChangeAvatar	
+
+            for ( int i=0; i< PersonaCallbacks.Count; i++ )
+            {
+                var cb = PersonaCallbacks[i];
+                if ( cb.SteamId != data.SteamID ) continue;
+
+                var image = GetCachedAvatar( cb.Size, cb.SteamId );
+                if ( image == null ) continue;
+
+                PersonaCallbacks.Remove( cb );
+
+                if ( cb.Callback != null )
+                {
+                    cb.Callback( image );
+                }
+            }
         }
 
     }