Split out index-only response

osu.Game.Tests/Visual/Multiplayer/TestSceneTimeshiftResultsScreen.cs

@@ -111,7 +111,7 @@ private void bindHandler(double delay = 0)
 
                         void success()
                         {
-                            r.TriggerSuccess(new MultiplayerScores { Scores = roomScores });
+                            r.TriggerSuccess(new IndexedMultiplayerScores { Scores = roomScores });
                             roomsReceived = true;
                         }
 

osu.Game/Online/Multiplayer/IndexPlaylistScoresRequest.cs

@@ -12,7 +12,7 @@ namespace osu.Game.Online.Multiplayer
     /// <summary>
     /// Returns a list of scores for the specified playlist item.
     /// </summary>
-    public class IndexPlaylistScoresRequest : APIRequest<MultiplayerScores>
+    public class IndexPlaylistScoresRequest : APIRequest<IndexedMultiplayerScores>
     {
         private readonly int roomId;
         private readonly int playlistItemId;

osu.Game/Online/Multiplayer/IndexedMultiplayerScores.cs

@@ -0,0 +1,27 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using JetBrains.Annotations;
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.Multiplayer
+{
+    /// <summary>
+    /// A <see cref="MultiplayerScores"/> object returned via a <see cref="IndexPlaylistScoresRequest"/>.
+    /// </summary>
+    public class IndexedMultiplayerScores : MultiplayerScores
+    {
+        /// <summary>
+        /// The total scores in the playlist item.
+        /// </summary>
+        [JsonProperty("total")]
+        public int? TotalScores { get; set; }
+
+        /// <summary>
+        /// The user's score, if any.
+        /// </summary>
+        [JsonProperty("user_score")]
+        [CanBeNull]
+        public MultiplayerScore UserScore { get; set; }
+    }
+}

osu.Game/Online/Multiplayer/MultiplayerScores.cs

@@ -18,18 +18,6 @@ public class MultiplayerScores : ResponseWithCursor
         [JsonProperty("scores")]
         public List<MultiplayerScore> Scores { get; set; }
 
-        /// <summary>
-        /// The total scores in the playlist item. Only provided via <see cref="IndexPlaylistScoresRequest"/>.
-        /// </summary>
-        [JsonProperty("total")]
-        public int? TotalScores { get; set; }
-
-        /// <summary>
-        /// The user's score, if any. Only provided via <see cref="IndexPlaylistScoresRequest"/>.
-        /// </summary>
-        [JsonProperty("user_score")]
-        public MultiplayerScore UserScore { get; set; }
-
         /// <summary>
         /// The parameters to be used to fetch the next page.
         /// </summary>