Move class to final location

osu.Game/Screens/Play/HUD/MultiplayerGameplayLeaderboard.cs

@@ -0,0 +1,98 @@
+// 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 System.Collections.Generic;
+using System.Linq;
+using JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Game.Configuration;
+using osu.Game.Database;
+using osu.Game.Online.API;
+using osu.Game.Online.Spectator;
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Screens.Play.HUD
+{
+    public class MultiplayerGameplayLeaderboard : GameplayLeaderboard
+    {
+        private readonly ScoreProcessor scoreProcessor;
+
+        /// <summary>
+        /// Construct a new leaderboard.
+        /// </summary>
+        /// <param name="scoreProcessor">A score processor instance to handle score calculation for scores of users in the match.</param>
+        public MultiplayerGameplayLeaderboard(ScoreProcessor scoreProcessor)
+        {
+            this.scoreProcessor = scoreProcessor;
+
+            AddPlayer(new BindableDouble(), new GuestUser());
+        }
+
+        [Resolved]
+        private SpectatorStreamingClient streamingClient { get; set; }
+
+        [Resolved]
+        private UserLookupCache userLookupCache { get; set; }
+
+        private readonly Dictionary<int, TrackedUserData> userScores = new Dictionary<int, TrackedUserData>();
+
+        private Bindable<ScoringMode> scoringMode;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuConfigManager config)
+        {
+            streamingClient.OnNewFrames += handleIncomingFrames;
+
+            foreach (var user in streamingClient.PlayingUsers)
+            {
+                streamingClient.WatchUser(user);
+                var resolvedUser = userLookupCache.GetUserAsync(user).Result;
+
+                var trackedUser = new TrackedUserData();
+
+                userScores[user] = trackedUser;
+                AddPlayer(trackedUser.Score, resolvedUser);
+            }
+
+            scoringMode = config.GetBindable<ScoringMode>(OsuSetting.ScoreDisplayMode);
+            scoringMode.BindValueChanged(updateAllScores, true);
+        }
+
+        private void updateAllScores(ValueChangedEvent<ScoringMode> mode)
+        {
+            foreach (var trackedData in userScores.Values)
+                trackedData.UpdateScore(scoreProcessor, mode.NewValue);
+        }
+
+        private void handleIncomingFrames(int userId, FrameDataBundle bundle)
+        {
+            if (userScores.TryGetValue(userId, out var trackedData))
+            {
+                trackedData.LastHeader = bundle.Header;
+                trackedData.UpdateScore(scoreProcessor, scoringMode.Value);
+            }
+        }
+
+        private class TrackedUserData
+        {
+            public readonly BindableDouble Score = new BindableDouble();
+
+            public readonly BindableDouble Accuracy = new BindableDouble();
+
+            public readonly BindableInt CurrentCombo = new BindableInt();
+
+            [CanBeNull]
+            public FrameHeader LastHeader;
+
+            public void UpdateScore(ScoreProcessor processor, ScoringMode mode)
+            {
+                if (LastHeader == null)
+                    return;
+
+                (Score.Value, Accuracy.Value) = processor.GetScoreAndAccuracy(mode, LastHeader.MaxCombo, LastHeader.Statistics.ToDictionary(s => s.Result, s => s.Count));
+                CurrentCombo.Value = LastHeader.Combo;
+            }
+        }
+    }
+}