Merge branch 'ppy:master' into strain-reduction-removal

.github/workflows/ci.yml

@@ -114,7 +114,10 @@ jobs:
           dotnet-version: "8.0.x"
 
       - name: Install .NET workloads
-        run: dotnet workload install android
+        # since windows image 20241113.3.0, not specifying a version here
+        # installs the .NET 7 version of android workload for very unknown reasons.
+        # revisit once we upgrade to .NET 9, it's probably fixed there.
+        run: dotnet workload install android --version (dotnet --version)
 
       - name: Compile
         run: dotnet build -c Debug osu.Android.slnf

osu.Android.props

@@ -10,7 +10,7 @@
     <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.1118.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.1128.0" />
   </ItemGroup>
   <PropertyGroup>
     <!-- Fody does not handle Android build well, and warns when unchanged.

osu.Desktop/DiscordRichPresence.cs

@@ -15,6 +15,7 @@ using osu.Framework.Threading;
 using osu.Game;
 using osu.Game.Configuration;
 using osu.Game.Extensions;
+using osu.Game.Online;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Multiplayer;
@@ -47,6 +48,9 @@ namespace osu.Desktop
         [Resolved]
         private MultiplayerClient multiplayerClient { get; set; } = null!;
 
+        [Resolved]
+        private LocalUserStatisticsProvider statisticsProvider { get; set; } = null!;
+
         [Resolved]
         private OsuConfigManager config { get; set; } = null!;
 
@@ -117,7 +121,9 @@ namespace osu.Desktop
             status.BindValueChanged(_ => schedulePresenceUpdate());
             activity.BindValueChanged(_ => schedulePresenceUpdate());
             privacyMode.BindValueChanged(_ => schedulePresenceUpdate());
+
             multiplayerClient.RoomUpdated += onRoomUpdated;
+            statisticsProvider.StatisticsUpdated += onStatisticsUpdated;
         }
 
         private void onReady(object _, ReadyMessage __)
@@ -133,6 +139,8 @@ namespace osu.Desktop
 
         private void onRoomUpdated() => schedulePresenceUpdate();
 
+        private void onStatisticsUpdated(UserStatisticsUpdate _) => schedulePresenceUpdate();
+
         private ScheduledDelegate? presenceUpdateDelegate;
 
         private void schedulePresenceUpdate()
@@ -167,7 +175,7 @@ namespace osu.Desktop
                 presence.State = clampLength(activity.Value.GetStatus(hideIdentifiableInformation));
                 presence.Details = clampLength(activity.Value.GetDetails(hideIdentifiableInformation) ?? string.Empty);
 
-                if (getBeatmapID(activity.Value) is int beatmapId && beatmapId > 0)
+                if (activity.Value.GetBeatmapID(hideIdentifiableInformation) is int beatmapId && beatmapId > 0)
                 {
                     presence.Buttons = new[]
                     {
@@ -229,10 +237,8 @@ namespace osu.Desktop
                 presence.Assets.LargeImageText = string.Empty;
             else
             {
-                if (user.Value.RulesetsStatistics != null && user.Value.RulesetsStatistics.TryGetValue(ruleset.Value.ShortName, out UserStatistics? statistics))
+                var statistics = statisticsProvider.GetStatisticsFor(ruleset.Value);
-                    presence.Assets.LargeImageText = $"{user.Value.Username}" + (statistics.GlobalRank > 0 ? $" (rank #{statistics.GlobalRank:N0})" : string.Empty);
+                presence.Assets.LargeImageText = $"{user.Value.Username}" + (statistics?.GlobalRank > 0 ? $" (rank #{statistics.GlobalRank:N0})" : string.Empty);
-                else
-                    presence.Assets.LargeImageText = $"{user.Value.Username}" + (user.Value.Statistics?.GlobalRank > 0 ? $" (rank #{user.Value.Statistics.GlobalRank:N0})" : string.Empty);
             }
 
             // small image
@@ -327,25 +333,14 @@ namespace osu.Desktop
             return true;
         }
 
-        private static int? getBeatmapID(UserActivity activity)
-        {
-            switch (activity)
-            {
-                case UserActivity.InGame game:
-                    return game.BeatmapID;
-
-                case UserActivity.EditingBeatmap edit:
-                    return edit.BeatmapID;
-            }
-
-            return null;
-        }
-
         protected override void Dispose(bool isDisposing)
         {
             if (multiplayerClient.IsNotNull())
                 multiplayerClient.RoomUpdated -= onRoomUpdated;
 
+            if (statisticsProvider.IsNotNull())
+                statisticsProvider.StatisticsUpdated -= onStatisticsUpdated;
+
             client.Dispose();
             base.Dispose(isDisposing);
         }

osu.Game.Benchmarks/BenchmarkUnstableRate.cs

@@ -4,28 +4,54 @@
 using System.Collections.Generic;
 using BenchmarkDotNet.Attributes;
 using osu.Framework.Utils;
-using osu.Game.Rulesets.Objects;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Benchmarks
 {
     public class BenchmarkUnstableRate : BenchmarkTest
     {
-        private List<HitEvent> events = null!;
+        private readonly List<List<HitEvent>> incrementalEventLists = new List<List<HitEvent>>();
 
         public override void SetUp()
         {
             base.SetUp();
-            events = new List<HitEvent>();
 
-            for (int i = 0; i < 1000; i++)
+            var events = new List<HitEvent>();
-                events.Add(new HitEvent(RNG.NextDouble(-200.0, 200.0), RNG.NextDouble(1.0, 2.0), HitResult.Great, new HitObject(), null, null));
+
+            for (int i = 0; i < 2048; i++)
+            {
+                // Ensure the object has hit windows populated.
+                var hitObject = new HitCircle();
+                hitObject.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+                events.Add(new HitEvent(RNG.NextDouble(-200.0, 200.0), RNG.NextDouble(1.0, 2.0), HitResult.Great, hitObject, null, null));
+
+                incrementalEventLists.Add(new List<HitEvent>(events));
+            }
         }
 
         [Benchmark]
         public void CalculateUnstableRate()
         {
-            _ = events.CalculateUnstableRate();
+            for (int i = 0; i < 2048; i++)
+            {
+                var events = incrementalEventLists[i];
+                _ = events.CalculateUnstableRate();
+            }
+        }
+
+        [Benchmark]
+        public void CalculateUnstableRateUsingIncrementalCalculation()
+        {
+            HitEventExtensions.UnstableRateCalculationResult? last = null;
+
+            for (int i = 0; i < 2048; i++)
+            {
+                var events = incrementalEventLists[i];
+                last = events.CalculateUnstableRate(last);
+            }
         }
     }
 }

osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaLegacySkinTransformer.cs

@@ -164,10 +164,10 @@ namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 
         private Drawable getResult(HitResult result)
         {
-            if (!hit_result_mapping.ContainsKey(result))
+            if (!hit_result_mapping.TryGetValue(result, out var value))
                 return null;
 
-            string filename = this.GetManiaSkinConfig<string>(hit_result_mapping[result])?.Value
+            string filename = this.GetManiaSkinConfig<string>(value)?.Value
                               ?? default_hit_result_skin_filenames[result];
 
             var animation = this.GetAnimation(filename, true, true, frameLength: 1000 / 20d);

osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyNewStyleSpinner.cs

@@ -63,18 +63,18 @@ namespace osu.Game.Rulesets.Osu.Skinning.Legacy
                         Origin = Anchor.Centre,
                         Texture = source.GetTexture("spinner-top"),
                     },
-                    fixedMiddle = new Sprite
-                    {
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
-                        Texture = source.GetTexture("spinner-middle"),
-                    },
                     spinningMiddle = new Sprite
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         Texture = source.GetTexture("spinner-middle2"),
                     },
+                    fixedMiddle = new Sprite
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Texture = source.GetTexture("spinner-middle"),
+                    },
                 }
             });
 

osu.Game.Tests/ImportTest.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using NUnit.Framework;
@@ -64,6 +65,10 @@ namespace osu.Game.Tests
                 // Beatmap must be imported before the collection manager is loaded.
                 if (withBeatmap)
                     BeatmapManager.Import(TestResources.GetTestBeatmapForImport()).WaitSafely();
+
+                // the logic for setting the initial ruleset exists in OsuGame rather than OsuGameBase.
+                // the ruleset bindable is not meant to be nullable, so assign any ruleset in here.
+                Ruleset.Value = RulesetStore.AvailableRulesets.First();
             }
         }
     }

osu.Game.Tests/NonVisual/Ranking/UnstableRateTest.cs

@@ -20,12 +20,53 @@ namespace osu.Game.Tests.NonVisual.Ranking
         public void TestDistributedHits()
         {
             var events = Enumerable.Range(-5, 11)
-                                   .Select(t => new HitEvent(t - 5, 1.0, HitResult.Great, new HitObject(), null, null));
+                                   .Select(t => new HitEvent(t - 5, 1.0, HitResult.Great, new HitObject(), null, null))
+                                   .ToList();
 
             var unstableRate = new UnstableRate(events);
 
             Assert.IsNotNull(unstableRate.Value);
-            Assert.IsTrue(Precision.AlmostEquals(unstableRate.Value.Value, 10 * Math.Sqrt(10)));
+            Assert.AreEqual(unstableRate.Value.Value, 10 * Math.Sqrt(10), Precision.DOUBLE_EPSILON);
+        }
+
+        [Test]
+        public void TestDistributedHitsIncrementalRewind()
+        {
+            var events = Enumerable.Range(-5, 11)
+                                   .Select(t => new HitEvent(t - 5, 1.0, HitResult.Great, new HitObject(), null, null))
+                                   .ToList();
+
+            HitEventExtensions.UnstableRateCalculationResult result = null;
+
+            for (int i = 0; i < events.Count; i++)
+            {
+                result = events.GetRange(0, i + 1)
+                               .CalculateUnstableRate(result);
+            }
+
+            result = events.GetRange(0, 2).CalculateUnstableRate(result);
+
+            Assert.IsNotNull(result!.Result);
+            Assert.AreEqual(5, result.Result, Precision.DOUBLE_EPSILON);
+        }
+
+        [Test]
+        public void TestDistributedHitsIncremental()
+        {
+            var events = Enumerable.Range(-5, 11)
+                                   .Select(t => new HitEvent(t - 5, 1.0, HitResult.Great, new HitObject(), null, null))
+                                   .ToList();
+
+            HitEventExtensions.UnstableRateCalculationResult result = null;
+
+            for (int i = 0; i < events.Count; i++)
+            {
+                result = events.GetRange(0, i + 1)
+                               .CalculateUnstableRate(result);
+            }
+
+            Assert.IsNotNull(result!.Result);
+            Assert.AreEqual(10 * Math.Sqrt(10), result.Result, Precision.DOUBLE_EPSILON);
         }
 
         [Test]

osu.Game.Tests/Visual/Editing/TestSceneHitObjectSampleAdjustments.cs

@@ -527,8 +527,11 @@ namespace osu.Game.Tests.Visual.Editing
             checkPlacementSampleBank(HitSampleInfo.BANK_NORMAL);
             checkPlacementSampleAdditionBank(HitSampleInfo.BANK_NORMAL);
 
-            void checkPlacementSampleBank(string expected) => AddAssert($"Placement sample is {expected}", () => EditorBeatmap.PlacementObject.Value.Samples.First(s => s.Name == HitSampleInfo.HIT_NORMAL).Bank, () => Is.EqualTo(expected));
+            void checkPlacementSampleBank(string expected) => AddAssert($"Placement sample is {expected}",
-            void checkPlacementSampleAdditionBank(string expected) => AddAssert($"Placement sample addition is {expected}", () => EditorBeatmap.PlacementObject.Value.Samples.First(s => s.Name != HitSampleInfo.HIT_NORMAL).Bank, () => Is.EqualTo(expected));
+                () => EditorBeatmap.PlacementObject.Value.Samples.First(s => s.Name == HitSampleInfo.HIT_NORMAL).Bank, () => Is.EqualTo(expected));
+
+            void checkPlacementSampleAdditionBank(string expected) => AddAssert($"Placement sample addition is {expected}",
+                () => EditorBeatmap.PlacementObject.Value.Samples.First(s => s.Name != HitSampleInfo.HIT_NORMAL).Bank, () => Is.EqualTo(expected));
         }
 
         [Test]
@@ -781,15 +784,39 @@ namespace osu.Game.Tests.Visual.Editing
             setAdditionBankViaPopover(HitSampleInfo.BANK_SOFT);
             dismissPopover();
 
-            hitObjectHasSamples(0, HitSampleInfo.HIT_NORMAL, HitSampleInfo.HIT_FINISH);
+            assertNoChanges();
-            hitObjectHasSampleNormalBank(0, HitSampleInfo.BANK_NORMAL);
-            hitObjectHasSampleAdditionBank(0, HitSampleInfo.BANK_SOFT);
 
-            AddStep("select first object", () => EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[0]));
+            AddStep("select first object", () =>
+            {
+                EditorBeatmap.SelectedHitObjects.Clear();
+                EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[0]);
+            });
+            assertNoChanges();
 
-            hitObjectHasSamples(0, HitSampleInfo.HIT_NORMAL, HitSampleInfo.HIT_FINISH);
+            AddStep("select second object", () =>
-            hitObjectHasSampleNormalBank(0, HitSampleInfo.BANK_NORMAL);
+            {
-            hitObjectHasSampleAdditionBank(0, HitSampleInfo.BANK_SOFT);
+                EditorBeatmap.SelectedHitObjects.Clear();
+                EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[1]);
+            });
+            assertNoChanges();
+
+            AddStep("select first object", () =>
+            {
+                EditorBeatmap.SelectedHitObjects.Clear();
+                EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[0]);
+            });
+            assertNoChanges();
+
+            void assertNoChanges()
+            {
+                hitObjectHasSamples(0, HitSampleInfo.HIT_NORMAL, HitSampleInfo.HIT_FINISH);
+                hitObjectHasSampleNormalBank(0, HitSampleInfo.BANK_NORMAL);
+                hitObjectHasSampleAdditionBank(0, HitSampleInfo.BANK_SOFT);
+
+                hitObjectHasSamples(1, HitSampleInfo.HIT_NORMAL);
+                hitObjectHasSampleNormalBank(1, HitSampleInfo.BANK_SOFT);
+                hitObjectHasSampleAdditionBank(1, HitSampleInfo.BANK_SOFT);
+            }
         }
 
         private void clickSamplePiece(int objectIndex) => AddStep($"click {objectIndex.ToOrdinalWords()} sample piece", () =>
@@ -883,11 +910,12 @@ namespace osu.Game.Tests.Visual.Editing
             return h.Samples.All(o => o.Volume == volume);
         });
 
-        private void hitObjectNodeHasSampleVolume(int objectIndex, int nodeIndex, int volume) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has volume {volume}", () =>
+        private void hitObjectNodeHasSampleVolume(int objectIndex, int nodeIndex, int volume) => AddAssert(
-        {
+            $"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has volume {volume}", () =>
-            var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
+            {
-            return h is not null && h.NodeSamples[nodeIndex].All(o => o.Volume == volume);
+                var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
-        });
+                return h is not null && h.NodeSamples[nodeIndex].All(o => o.Volume == volume);
+            });
 
         private void setBankViaPopover(string bank) => AddStep($"set bank {bank} via popover", () =>
         {
@@ -944,29 +972,33 @@ namespace osu.Game.Tests.Visual.Editing
             return h.Samples.Where(o => o.Name != HitSampleInfo.HIT_NORMAL).All(o => o.Bank == bank);
         });
 
-        private void hitObjectNodeHasSamples(int objectIndex, int nodeIndex, params string[] samples) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has samples {string.Join(',', samples)}", () =>
+        private void hitObjectNodeHasSamples(int objectIndex, int nodeIndex, params string[] samples) => AddAssert(
-        {
+            $"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has samples {string.Join(',', samples)}", () =>
-            var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
+            {
-            return h is not null && h.NodeSamples[nodeIndex].Select(s => s.Name).SequenceEqual(samples);
+                var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
-        });
+                return h is not null && h.NodeSamples[nodeIndex].Select(s => s.Name).SequenceEqual(samples);
+            });
 
-        private void hitObjectNodeHasSampleBank(int objectIndex, int nodeIndex, string bank) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has bank {bank}", () =>
+        private void hitObjectNodeHasSampleBank(int objectIndex, int nodeIndex, string bank) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has bank {bank}",
-        {
+            () =>
-            var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
+            {
-            return h is not null && h.NodeSamples[nodeIndex].All(o => o.Bank == bank);
+                var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
-        });
+                return h is not null && h.NodeSamples[nodeIndex].All(o => o.Bank == bank);
+            });
 
-        private void hitObjectNodeHasSampleNormalBank(int objectIndex, int nodeIndex, string bank) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has normal bank {bank}", () =>
+        private void hitObjectNodeHasSampleNormalBank(int objectIndex, int nodeIndex, string bank) => AddAssert(
-        {
+            $"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has normal bank {bank}", () =>
-            var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
+            {
-            return h is not null && h.NodeSamples[nodeIndex].Where(o => o.Name == HitSampleInfo.HIT_NORMAL).All(o => o.Bank == bank);
+                var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
-        });
+                return h is not null && h.NodeSamples[nodeIndex].Where(o => o.Name == HitSampleInfo.HIT_NORMAL).All(o => o.Bank == bank);
+            });
 
-        private void hitObjectNodeHasSampleAdditionBank(int objectIndex, int nodeIndex, string bank) => AddAssert($"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has addition bank {bank}", () =>
+        private void hitObjectNodeHasSampleAdditionBank(int objectIndex, int nodeIndex, string bank) => AddAssert(
-        {
+            $"{objectIndex.ToOrdinalWords()} object {nodeIndex.ToOrdinalWords()} node has addition bank {bank}", () =>
-            var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
+            {
-            return h is not null && h.NodeSamples[nodeIndex].Where(o => o.Name != HitSampleInfo.HIT_NORMAL).All(o => o.Bank == bank);
+                var h = EditorBeatmap.HitObjects.ElementAt(objectIndex) as IHasRepeats;
-        });
+                return h is not null && h.NodeSamples[nodeIndex].Where(o => o.Name != HitSampleInfo.HIT_NORMAL).All(o => o.Bank == bank);
+            });
 
         private void editorTimeIs(double time) => AddAssert($"editor time is {time}", () => Precision.AlmostEquals(EditorClock.CurrentTimeAccurate, time, 1));
     }

osu.Game.Tests/Visual/Menus/TestSceneLoginOverlay.cs

@@ -10,11 +10,13 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Online;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Login;
 using osu.Game.Overlays.Settings;
+using osu.Game.Tests.Visual.Online;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
 using osuTK.Input;
@@ -31,6 +33,9 @@ namespace osu.Game.Tests.Visual.Menus
         [Resolved]
         private OsuConfigManager configManager { get; set; } = null!;
 
+        [Cached(typeof(LocalUserStatisticsProvider))]
+        private readonly TestSceneUserPanel.TestUserStatisticsProvider statisticsProvider = new TestSceneUserPanel.TestUserStatisticsProvider();
+
         [BackgroundDependencyLoader]
         private void load()
         {
@@ -170,6 +175,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("enter code", () => loginOverlay.ChildrenOfType<OsuTextBox>().First().Text = "88800088");
             assertAPIState(APIState.Online);
 
+            AddStep("feed statistics", () => statisticsProvider.UpdateStatistics(new UserStatistics(), Ruleset.Value));
             AddStep("click on flag", () =>
             {
                 InputManager.MoveMouseTo(loginOverlay.ChildrenOfType<UpdateableFlag>().First());

osu.Game.Tests/Visual/Menus/TestSceneStarFountain.cs

@@ -3,8 +3,10 @@
 
 using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
+using osu.Game.Configuration;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play;
 
@@ -73,5 +75,57 @@ namespace osu.Game.Tests.Visual.Menus
                 ((StarFountain)Children[1]).Shoot(-1);
             });
         }
+
+        [Test]
+        public void TestGameplayStarFountainsSetting()
+        {
+            Bindable<bool> starFountainsEnabled = null!;
+
+            AddStep("load configuration", () =>
+            {
+                var config = new OsuConfigManager(LocalStorage);
+                starFountainsEnabled = config.GetBindable<bool>(OsuSetting.StarFountains);
+            });
+
+            AddStep("make fountains", () =>
+            {
+                Children = new Drawable[]
+                {
+                    new KiaiGameplayFountains.GameplayStarFountain
+                    {
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        X = 75,
+                    },
+                    new KiaiGameplayFountains.GameplayStarFountain
+                    {
+                        Anchor = Anchor.BottomRight,
+                        Origin = Anchor.BottomRight,
+                        X = -75,
+                    },
+                };
+            });
+
+            AddStep("enable KiaiStarEffects", () => starFountainsEnabled.Value = true);
+            AddRepeatStep("activate fountains (enabled)", () =>
+            {
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[0]).Shoot(1);
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[1]).Shoot(-1);
+            }, 100);
+
+            AddStep("disable KiaiStarEffects", () => starFountainsEnabled.Value = false);
+            AddRepeatStep("attempt to activate fountains (disabled)", () =>
+            {
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[0]).Shoot(1);
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[1]).Shoot(-1);
+            }, 100);
+
+            AddStep("re-enable KiaiStarEffects", () => starFountainsEnabled.Value = true);
+            AddRepeatStep("activate fountains (re-enabled)", () =>
+            {
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[0]).Shoot(1);
+                ((KiaiGameplayFountains.GameplayStarFountain)Children[1]).Shoot(-1);
+            }, 100);
+        }
     }
 }

osu.Game.Tests/Visual/Menus/TestSceneToolbarUserButton.cs

@@ -101,7 +101,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("Gain", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {
@@ -118,7 +118,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("Loss", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {
@@ -136,7 +136,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("Tiny increase in PP", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {
@@ -153,7 +153,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("No change 1", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {
@@ -170,7 +170,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("Was null", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {
@@ -187,7 +187,7 @@ namespace osu.Game.Tests.Visual.Menus
             AddStep("Became null", () =>
             {
                 var transientUpdateDisplay = this.ChildrenOfType<TransientUserStatisticsUpdateDisplay>().Single();
-                transientUpdateDisplay.LatestUpdate.Value = new UserStatisticsUpdate(
+                transientUpdateDisplay.LatestUpdate.Value = new ScoreBasedUserStatisticsUpdate(
                     new ScoreInfo(),
                     new UserStatistics
                     {

osu.Game.Tests/Visual/Navigation/TestSceneScreenNavigation.cs

@@ -354,6 +354,23 @@ namespace osu.Game.Tests.Visual.Navigation
             AddAssert("retry count is 1", () => player.RestartCount == 1);
         }
 
+        [Test]
+        public void TestLastScoreNullAfterExitingPlayer()
+        {
+            AddUntilStep("wait for last play null", getLastPlay, () => Is.Null);
+
+            var getOriginalPlayer = playToCompletion();
+
+            AddStep("attempt to retry", () => getOriginalPlayer().ChildrenOfType<HotkeyRetryOverlay>().First().Action());
+            AddUntilStep("wait for last play matches player", getLastPlay, () => Is.EqualTo(getOriginalPlayer().Score.ScoreInfo));
+
+            AddUntilStep("wait for player", () => Game.ScreenStack.CurrentScreen != getOriginalPlayer() && Game.ScreenStack.CurrentScreen is Player);
+            AddStep("exit player", () => (Game.ScreenStack.CurrentScreen as Player)?.Exit());
+            AddUntilStep("wait for last play null", getLastPlay, () => Is.Null);
+
+            ScoreInfo getLastPlay() => Game.Dependencies.Get<SessionStatics>().Get<ScoreInfo>(Static.LastLocalUserScore);
+        }
+
         [Test]
         public void TestRetryImmediatelyAfterCompletion()
         {

osu.Game.Tests/Visual/Online/TestSceneChatOverlay.cs

@@ -457,6 +457,61 @@ namespace osu.Game.Tests.Visual.Online
             waitForChannel1Visible();
         }
 
+        [Test]
+        public void TestPublicChannelsSortedByName()
+        {
+            // Intentionally join back to front.
+            AddStep("Show overlay with channel 2", () =>
+            {
+                channelManager.CurrentChannel.Value = channelManager.JoinChannel(testChannel2);
+                chatOverlay.Show();
+            });
+            AddUntilStep("second channel is at top of list", () => getFirstVisiblePublicChannel().Channel == testChannel2);
+
+            AddStep("Join channel 1", () => channelManager.JoinChannel(testChannel1));
+            AddUntilStep("first channel is at top of list", () => getFirstVisiblePublicChannel().Channel == testChannel1);
+
+            AddStep("message in channel 2", () =>
+            {
+                testChannel2.AddNewMessages(new Message(1) { Content = "hi!", Sender = new APIUser { Username = "person" } });
+            });
+            AddUntilStep("first channel still at top of list", () => getFirstVisiblePublicChannel().Channel == testChannel1);
+
+            ChannelListItem getFirstVisiblePublicChannel() =>
+                chatOverlay.ChildrenOfType<ChannelList>().Single().PublicChannelGroup.ItemFlow.FlowingChildren.OfType<ChannelListItem>().First(item => item.Channel.Type == ChannelType.Public);
+        }
+
+        [Test]
+        public void TestPrivateChannelsSortedByRecent()
+        {
+            Channel pmChannel1 = createPrivateChannel();
+            Channel pmChannel2 = createPrivateChannel();
+
+            joinChannel(pmChannel1);
+            joinChannel(pmChannel2);
+
+            AddStep("Show overlay", () => chatOverlay.Show());
+
+            AddUntilStep("first channel is at top of list", () => getFirstVisiblePMChannel().Channel == pmChannel1);
+
+            AddStep("message in channel 2", () =>
+            {
+                pmChannel2.AddNewMessages(new Message(1) { Content = "hi!", Sender = new APIUser { Username = "person" } });
+            });
+
+            AddUntilStep("wait for first channel raised to top of list", () => getFirstVisiblePMChannel().Channel == pmChannel2);
+
+            AddStep("message in channel 1", () =>
+            {
+                pmChannel1.AddNewMessages(new Message(1) { Content = "hi!", Sender = new APIUser { Username = "person" } });
+            });
+
+            AddUntilStep("wait for first channel raised to top of list", () => getFirstVisiblePMChannel().Channel == pmChannel1);
+
+            ChannelListItem getFirstVisiblePMChannel() =>
+                chatOverlay.ChildrenOfType<ChannelList>().Single().PrivateChannelGroup.ItemFlow.FlowingChildren.OfType<ChannelListItem>().First(item => item.Channel.Type == ChannelType.PM);
+        }
+
         [Test]
         public void TestKeyboardNewChannel()
         {

osu.Game.Tests/Visual/Online/TestSceneLocalUserStatisticsProvider.cs

@@ -0,0 +1,179 @@
+// 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 NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Graphics.Containers;
+using osu.Game.Online;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Catch;
+using osu.Game.Rulesets.Mania;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Taiko;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    public partial class TestSceneLocalUserStatisticsProvider : OsuTestScene
+    {
+        private LocalUserStatisticsProvider statisticsProvider = null!;
+
+        private readonly Dictionary<(int userId, string rulesetName), UserStatistics> serverSideStatistics = new Dictionary<(int userId, string rulesetName), UserStatistics>();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("clear statistics", () => serverSideStatistics.Clear());
+
+            setUser(1000);
+
+            AddStep("setup provider", () =>
+            {
+                OsuTextFlowContainer text;
+
+                ((DummyAPIAccess)API).HandleRequest = r =>
+                {
+                    switch (r)
+                    {
+                        case GetUserRequest userRequest:
+                            int userId = int.Parse(userRequest.Lookup);
+                            string rulesetName = userRequest.Ruleset!.ShortName;
+                            var response = new APIUser
+                            {
+                                Id = userId,
+                                Statistics = tryGetStatistics(userId, rulesetName)
+                            };
+
+                            userRequest.TriggerSuccess(response);
+                            return true;
+
+                        default:
+                            return false;
+                    }
+                };
+
+                Clear();
+                Add(statisticsProvider = new LocalUserStatisticsProvider());
+                Add(text = new OsuTextFlowContainer
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                });
+
+                statisticsProvider.StatisticsUpdated += update =>
+                {
+                    text.Clear();
+
+                    foreach (var ruleset in Dependencies.Get<RulesetStore>().AvailableRulesets)
+                    {
+                        text.AddText(statisticsProvider.GetStatisticsFor(ruleset) is UserStatistics statistics
+                            ? $"{ruleset.Name} statistics: (total score: {statistics.TotalScore})"
+                            : $"{ruleset.Name} statistics: (null)");
+                        text.NewLine();
+                    }
+
+                    text.AddText($"latest update: {update.Ruleset}"
+                                 + $" ({(update.OldStatistics?.TotalScore.ToString() ?? "null")} -> {update.NewStatistics.TotalScore})");
+                };
+
+                Ruleset.Value = new OsuRuleset().RulesetInfo;
+            });
+        }
+
+        [Test]
+        public void TestInitialStatistics()
+        {
+            AddAssert("osu statistics populated", () => statisticsProvider.GetStatisticsFor(new OsuRuleset().RulesetInfo)!.TotalScore, () => Is.EqualTo(4_000_000));
+            AddAssert("taiko statistics populated", () => statisticsProvider.GetStatisticsFor(new TaikoRuleset().RulesetInfo)!.TotalScore, () => Is.EqualTo(3_000_000));
+            AddAssert("catch statistics populated", () => statisticsProvider.GetStatisticsFor(new CatchRuleset().RulesetInfo)!.TotalScore, () => Is.EqualTo(2_000_000));
+            AddAssert("mania statistics populated", () => statisticsProvider.GetStatisticsFor(new ManiaRuleset().RulesetInfo)!.TotalScore, () => Is.EqualTo(1_000_000));
+        }
+
+        [Test]
+        public void TestUserChanges()
+        {
+            setUser(1001);
+
+            AddStep("update statistics for user 1000", () =>
+            {
+                serverSideStatistics[(1000, "osu")] = new UserStatistics { TotalScore = 5_000_000 };
+                serverSideStatistics[(1000, "taiko")] = new UserStatistics { TotalScore = 6_000_000 };
+            });
+
+            AddAssert("statistics matches user 1001 in osu",
+                () => statisticsProvider.GetStatisticsFor(new OsuRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(4_000_000));
+
+            AddAssert("statistics matches user 1001 in taiko",
+                () => statisticsProvider.GetStatisticsFor(new TaikoRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(3_000_000));
+
+            setUser(1000, false);
+
+            AddAssert("statistics matches user 1000 in osu",
+                () => statisticsProvider.GetStatisticsFor(new OsuRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(5_000_000));
+
+            AddAssert("statistics matches user 1000 in taiko",
+                () => statisticsProvider.GetStatisticsFor(new TaikoRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(6_000_000));
+        }
+
+        [Test]
+        public void TestRefetchStatistics()
+        {
+            UserStatisticsUpdate? update = null;
+
+            setUser(1001);
+
+            AddStep("update statistics server side",
+                () => serverSideStatistics[(1001, "osu")] = new UserStatistics { TotalScore = 9_000_000 });
+
+            AddAssert("statistics match old score",
+                () => statisticsProvider.GetStatisticsFor(new OsuRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(4_000_000));
+
+            AddStep("setup event", () =>
+            {
+                update = null;
+                statisticsProvider.StatisticsUpdated -= onStatisticsUpdated;
+                statisticsProvider.StatisticsUpdated += onStatisticsUpdated;
+            });
+
+            AddStep("request refetch", () => statisticsProvider.RefetchStatistics(new OsuRuleset().RulesetInfo));
+            AddUntilStep("statistics update raised",
+                () => update?.NewStatistics.TotalScore,
+                () => Is.EqualTo(9_000_000));
+            AddAssert("statistics match new score",
+                () => statisticsProvider.GetStatisticsFor(new OsuRuleset().RulesetInfo)!.TotalScore,
+                () => Is.EqualTo(9_000_000));
+
+            void onStatisticsUpdated(UserStatisticsUpdate u) => update = u;
+        }
+
+        private UserStatistics tryGetStatistics(int userId, string rulesetName)
+            => serverSideStatistics.TryGetValue((userId, rulesetName), out var stats) ? stats : new UserStatistics();
+
+        private void setUser(int userId, bool generateStatistics = true)
+        {
+            AddStep($"set local user to {userId}", () =>
+            {
+                if (generateStatistics)
+                {
+                    serverSideStatistics[(userId, "osu")] = new UserStatistics { TotalScore = 4_000_000 };
+                    serverSideStatistics[(userId, "taiko")] = new UserStatistics { TotalScore = 3_000_000 };
+                    serverSideStatistics[(userId, "fruits")] = new UserStatistics { TotalScore = 2_000_000 };
+                    serverSideStatistics[(userId, "mania")] = new UserStatistics { TotalScore = 1_000_000 };
+                }
+
+                ((DummyAPIAccess)API).LocalUser.Value = new APIUser { Id = userId };
+            });
+        }
+    }
+}

osu.Game.Tests/Visual/Online/TestSceneUserPanel.cs

@@ -1,8 +1,6 @@
 // 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.
 
-#nullable disable
-
 using System;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -11,6 +9,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
+using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
@@ -24,17 +23,20 @@ namespace osu.Game.Tests.Visual.Online
     [TestFixture]
     public partial class TestSceneUserPanel : OsuTestScene
     {
-        private readonly Bindable<UserActivity> activity = new Bindable<UserActivity>();
+        private readonly Bindable<UserActivity?> activity = new Bindable<UserActivity?>();
         private readonly Bindable<UserStatus?> status = new Bindable<UserStatus?>();
 
-        private UserGridPanel boundPanel1;
+        private UserGridPanel boundPanel1 = null!;
-        private TestUserListPanel boundPanel2;
+        private TestUserListPanel boundPanel2 = null!;
 
         [Cached]
-        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Purple);
+        private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Purple);
+
+        [Cached(typeof(LocalUserStatisticsProvider))]
+        private readonly TestUserStatisticsProvider statisticsProvider = new TestUserStatisticsProvider();
 
         [Resolved]
-        private IRulesetStore rulesetStore { get; set; }
+        private IRulesetStore rulesetStore { get; set; } = null!;
 
         [SetUp]
         public void SetUp() => Schedule(() =>
@@ -42,7 +44,11 @@ namespace osu.Game.Tests.Visual.Online
             activity.Value = null;
             status.Value = null;
 
-            Child = new FillFlowContainer
+            Remove(statisticsProvider, false);
+            Clear();
+            Add(statisticsProvider);
+
+            Add(new FillFlowContainer
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
@@ -108,7 +114,7 @@ namespace osu.Game.Tests.Visual.Online
                         Statistics = new UserStatistics { GlobalRank = null, CountryRank = null }
                     }) { Width = 300 }
                 }
-            };
+            });
 
             boundPanel1.Status.BindTo(status);
             boundPanel1.Activity.BindTo(activity);
@@ -162,24 +168,21 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("update statistics", () =>
             {
-                API.UpdateStatistics(new UserStatistics
+                statisticsProvider.UpdateStatistics(new UserStatistics
                 {
                     GlobalRank = RNG.Next(100000),
                     CountryRank = RNG.Next(100000)
-                });
+                }, Ruleset.Value);
             });
             AddStep("set statistics to something big", () =>
             {
-                API.UpdateStatistics(new UserStatistics
+                statisticsProvider.UpdateStatistics(new UserStatistics
                 {
                     GlobalRank = RNG.Next(1_000_000, 100_000_000),
                     CountryRank = RNG.Next(1_000_000, 100_000_000)
-                });
+                }, Ruleset.Value);
-            });
-            AddStep("set statistics to empty", () =>
-            {
-                API.UpdateStatistics(new UserStatistics());
             });
+            AddStep("set statistics to empty", () => statisticsProvider.UpdateStatistics(new UserStatistics(), Ruleset.Value));
         }
 
         private UserActivity soloGameStatusForRuleset(int rulesetId) => new UserActivity.InSoloGame(new BeatmapInfo(), rulesetStore.GetRuleset(rulesetId)!);
@@ -201,5 +204,11 @@ namespace osu.Game.Tests.Visual.Online
 
             public new TextFlowContainer LastVisitMessage => base.LastVisitMessage;
         }
+
+        public partial class TestUserStatisticsProvider : LocalUserStatisticsProvider
+        {
+            public new void UpdateStatistics(UserStatistics newStatistics, RulesetInfo ruleset, Action<UserStatisticsUpdate>? callback = null)
+                => base.UpdateStatistics(newStatistics, ruleset, callback);
+        }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneUserProfileDailyChallenge.cs

@@ -37,7 +37,7 @@ namespace osu.Game.Tests.Visual.Online
             AddSliderStep("weekly best", 0, 250, 1, v => update(s => s.WeeklyStreakBest = v));
             AddSliderStep("top 10%", 0, 999, 0, v => update(s => s.Top10PercentPlacements = v));
             AddSliderStep("top 50%", 0, 999, 0, v => update(s => s.Top50PercentPlacements = v));
-            AddSliderStep("playcount", 0, 999, 0, v => update(s => s.PlayCount = v));
+            AddSliderStep("playcount", 0, 1500, 1, v => update(s => s.PlayCount = v));
             AddStep("create", () =>
             {
                 Clear();
@@ -66,8 +66,8 @@ namespace osu.Game.Tests.Visual.Online
         [Test]
         public void TestPlayCountRankingTier()
         {
-            AddAssert("1 before silver", () => DailyChallengeStatsTooltip.TierForPlayCount(30) == RankingTier.Bronze);
+            AddAssert("1 before silver", () => DailyChallengeStatsTooltip.TierForPlayCount(29) == RankingTier.Bronze);
-            AddAssert("first silver", () => DailyChallengeStatsTooltip.TierForPlayCount(31) == RankingTier.Silver);
+            AddAssert("first silver", () => DailyChallengeStatsTooltip.TierForPlayCount(30) == RankingTier.Silver);
         }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneUserStatisticsWatcher.cs

@@ -25,6 +25,7 @@ namespace osu.Game.Tests.Visual.Online
     {
         protected override bool UseOnlineAPI => false;
 
+        private LocalUserStatisticsProvider statisticsProvider = null!;
         private UserStatisticsWatcher watcher = null!;
 
         [Resolved]
@@ -107,7 +108,9 @@ namespace osu.Game.Tests.Visual.Online
 
             AddStep("create watcher", () =>
             {
-                Child = watcher = new UserStatisticsWatcher();
+                Clear();
+                Add(statisticsProvider = new LocalUserStatisticsProvider());
+                Add(watcher = new UserStatisticsWatcher(statisticsProvider));
             });
         }
 
@@ -123,7 +126,7 @@ namespace osu.Game.Tests.Visual.Online
 
             var ruleset = new OsuRuleset().RulesetInfo;
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             feignScoreProcessing(userId, ruleset, 5_000_000);
@@ -146,7 +149,7 @@ namespace osu.Game.Tests.Visual.Online
             // note ordering - in this test processing completes *before* the registration is added.
             feignScoreProcessing(userId, ruleset, 5_000_000);
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             AddStep("signal score processed", () => ((ISpectatorClient)spectatorClient).UserScoreProcessed(userId, scoreId));
@@ -164,7 +167,7 @@ namespace osu.Game.Tests.Visual.Online
             long scoreId = getScoreId();
             var ruleset = new OsuRuleset().RulesetInfo;
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             feignScoreProcessing(userId, ruleset, 5_000_000);
@@ -191,7 +194,7 @@ namespace osu.Game.Tests.Visual.Online
             long scoreId = getScoreId();
             var ruleset = new OsuRuleset().RulesetInfo;
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             feignScoreProcessing(userId, ruleset, 5_000_000);
@@ -212,7 +215,7 @@ namespace osu.Game.Tests.Visual.Online
             long scoreId = getScoreId();
             var ruleset = new OsuRuleset().RulesetInfo;
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             feignScoreProcessing(userId, ruleset, 5_000_000);
@@ -241,7 +244,7 @@ namespace osu.Game.Tests.Visual.Online
 
             feignScoreProcessing(userId, ruleset, 6_000_000);
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(secondScoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             AddStep("signal score processed", () => ((ISpectatorClient)spectatorClient).UserScoreProcessed(userId, secondScoreId));
@@ -259,15 +262,14 @@ namespace osu.Game.Tests.Visual.Online
 
             var ruleset = new OsuRuleset().RulesetInfo;
 
-            UserStatisticsUpdate? update = null;
+            ScoreBasedUserStatisticsUpdate? update = null;
             registerForUpdates(scoreId, ruleset, receivedUpdate => update = receivedUpdate);
 
             feignScoreProcessing(userId, ruleset, 5_000_000);
 
             AddStep("signal score processed", () => ((ISpectatorClient)spectatorClient).UserScoreProcessed(userId, scoreId));
             AddUntilStep("update received", () => update != null);
-            AddAssert("local user values are correct", () => dummyAPI.LocalUser.Value.Statistics.TotalScore, () => Is.EqualTo(5_000_000));
+            AddAssert("statistics values are correct", () => statisticsProvider.GetStatisticsFor(ruleset)!.TotalScore, () => Is.EqualTo(5_000_000));
-            AddAssert("statistics values are correct", () => dummyAPI.Statistics.Value!.TotalScore, () => Is.EqualTo(5_000_000));
         }
 
         private int nextUserId = 2000;
@@ -289,7 +291,7 @@ namespace osu.Game.Tests.Visual.Online
             });
         }
 
-        private void registerForUpdates(long scoreId, RulesetInfo rulesetInfo, Action<UserStatisticsUpdate> onUpdateReady) =>
+        private void registerForUpdates(long scoreId, RulesetInfo rulesetInfo, Action<ScoreBasedUserStatisticsUpdate> onUpdateReady) =>
             AddStep("register for updates", () =>
             {
                 watcher.RegisterForStatisticsUpdateAfter(

osu.Game.Tests/Visual/Playlists/TestScenePlaylistsResultsScreen.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using System.Net;
 using Newtonsoft.Json.Linq;
 using NUnit.Framework;
+using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Graphics.Containers;
@@ -31,7 +32,7 @@ namespace osu.Game.Tests.Visual.Playlists
         private const int scores_per_result = 10;
         private const int real_user_position = 200;
 
-        private TestResultsScreen resultsScreen = null!;
+        private ResultsScreen resultsScreen = null!;
 
         private int lowestScoreId; // Score ID of the lowest score in the list.
         private int highestScoreId; // Score ID of the highest score in the list.
@@ -68,11 +69,11 @@ namespace osu.Game.Tests.Visual.Playlists
         }
 
         [Test]
-        public void TestShowWithUserScore()
+        public void TestShowUserScore()
         {
             AddStep("bind user score info handler", () => bindHandler(userScore: userScore));
 
-            createResults(() => userScore);
+            createResultsWithScore(() => userScore);
             waitForDisplay();
 
             AddAssert("user score selected", () => this.ChildrenOfType<ScorePanel>().Single(p => p.Score.OnlineID == userScore.OnlineID).State == PanelState.Expanded);
@@ -81,11 +82,24 @@ namespace osu.Game.Tests.Visual.Playlists
         }
 
         [Test]
-        public void TestShowNullUserScore()
+        public void TestShowUserBest()
+        {
+            AddStep("bind user score info handler", () => bindHandler(userScore: userScore));
+
+            createUserBestResults();
+            waitForDisplay();
+
+            AddAssert("user score selected", () => this.ChildrenOfType<ScorePanel>().Single(p => p.Score.UserID == userScore.UserID).State == PanelState.Expanded);
+            AddAssert($"score panel position is {real_user_position}",
+                () => this.ChildrenOfType<ScorePanel>().Single(p => p.Score.UserID == userScore.UserID).ScorePosition.Value == real_user_position);
+        }
+
+        [Test]
+        public void TestShowNonUserScores()
         {
             AddStep("bind user score info handler", () => bindHandler());
 
-            createResults();
+            createUserBestResults();
             waitForDisplay();
 
             AddAssert("top score selected", () => this.ChildrenOfType<ScorePanel>().OrderByDescending(p => p.Score.TotalScore).First().State == PanelState.Expanded);
@@ -96,7 +110,7 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             AddStep("bind user score info handler", () => bindHandler(true, userScore));
 
-            createResults(() => userScore);
+            createResultsWithScore(() => userScore);
             waitForDisplay();
 
             AddAssert("more than 1 panel displayed", () => this.ChildrenOfType<ScorePanel>().Count() > 1);
@@ -104,11 +118,11 @@ namespace osu.Game.Tests.Visual.Playlists
         }
 
         [Test]
-        public void TestShowNullUserScoreWithDelay()
+        public void TestShowNonUserScoresWithDelay()
         {
             AddStep("bind delayed handler", () => bindHandler(true));
 
-            createResults();
+            createUserBestResults();
             waitForDisplay();
 
             AddAssert("top score selected", () => this.ChildrenOfType<ScorePanel>().OrderByDescending(p => p.Score.TotalScore).First().State == PanelState.Expanded);
@@ -119,7 +133,7 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             AddStep("bind delayed handler", () => bindHandler(true));
 
-            createResults();
+            createUserBestResults();
             waitForDisplay();
 
             for (int i = 0; i < 2; i++)
@@ -127,13 +141,16 @@ namespace osu.Game.Tests.Visual.Playlists
                 int beforePanelCount = 0;
 
                 AddStep("get panel count", () => beforePanelCount = this.ChildrenOfType<ScorePanel>().Count());
-                AddStep("scroll to right", () => resultsScreen.ScorePanelList.ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+                AddStep("scroll to right", () => resultsScreen.ChildrenOfType<ScorePanelList>().Single().ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+
+                AddAssert("right loading spinner shown", () =>
+                    resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Visible);
 
-                AddAssert("right loading spinner shown", () => resultsScreen.RightSpinner.State.Value == Visibility.Visible);
                 waitForDisplay();
 
                 AddAssert($"count increased by {scores_per_result}", () => this.ChildrenOfType<ScorePanel>().Count() == beforePanelCount + scores_per_result);
-                AddAssert("right loading spinner hidden", () => resultsScreen.RightSpinner.State.Value == Visibility.Hidden);
+                AddAssert("right loading spinner hidden", () =>
+                    resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Hidden);
             }
         }
 
@@ -142,29 +159,36 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             AddStep("bind delayed handler with scores", () => bindHandler(delayed: true));
 
-            createResults();
+            createUserBestResults();
             waitForDisplay();
 
             int beforePanelCount = 0;
 
             AddStep("get panel count", () => beforePanelCount = this.ChildrenOfType<ScorePanel>().Count());
-            AddStep("scroll to right", () => resultsScreen.ScorePanelList.ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+            AddStep("scroll to right", () => resultsScreen.ChildrenOfType<ScorePanelList>().Single().ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+
+            AddAssert("right loading spinner shown", () =>
+                resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Visible);
 
-            AddAssert("right loading spinner shown", () => resultsScreen.RightSpinner.State.Value == Visibility.Visible);
             waitForDisplay();
 
             AddAssert($"count increased by {scores_per_result}", () => this.ChildrenOfType<ScorePanel>().Count() == beforePanelCount + scores_per_result);
-            AddAssert("right loading spinner hidden", () => resultsScreen.RightSpinner.State.Value == Visibility.Hidden);
+            AddAssert("right loading spinner hidden", () =>
+                resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Hidden);
 
             AddStep("get panel count", () => beforePanelCount = this.ChildrenOfType<ScorePanel>().Count());
             AddStep("bind delayed handler with no scores", () => bindHandler(delayed: true, noScores: true));
-            AddStep("scroll to right", () => resultsScreen.ScorePanelList.ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+            AddStep("scroll to right", () => resultsScreen.ChildrenOfType<ScorePanelList>().Single().ChildrenOfType<OsuScrollContainer>().Single().ScrollToEnd(false));
+
+            AddAssert("right loading spinner shown", () =>
+                resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Visible);
 
-            AddAssert("right loading spinner shown", () => resultsScreen.RightSpinner.State.Value == Visibility.Visible);
             waitForDisplay();
 
             AddAssert("count not increased", () => this.ChildrenOfType<ScorePanel>().Count() == beforePanelCount);
-            AddAssert("right loading spinner hidden", () => resultsScreen.RightSpinner.State.Value == Visibility.Hidden);
+            AddAssert("right loading spinner hidden", () =>
+                resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreRight).State.Value == Visibility.Hidden);
+
             AddAssert("no placeholders shown", () => this.ChildrenOfType<MessagePlaceholder>().Count(), () => Is.Zero);
         }
 
@@ -173,7 +197,7 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             AddStep("bind user score info handler", () => bindHandler(userScore: userScore));
 
-            createResults(() => userScore);
+            createResultsWithScore(() => userScore);
             waitForDisplay();
 
             AddStep("bind delayed handler", () => bindHandler(true));
@@ -183,30 +207,36 @@ namespace osu.Game.Tests.Visual.Playlists
                 int beforePanelCount = 0;
 
                 AddStep("get panel count", () => beforePanelCount = this.ChildrenOfType<ScorePanel>().Count());
-                AddStep("scroll to left", () => resultsScreen.ScorePanelList.ChildrenOfType<OsuScrollContainer>().Single().ScrollToStart(false));
+                AddStep("scroll to left", () => resultsScreen.ChildrenOfType<ScorePanelList>().Single().ChildrenOfType<OsuScrollContainer>().Single().ScrollToStart(false));
+
+                AddAssert("left loading spinner shown", () =>
+                    resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreLeft).State.Value == Visibility.Visible);
 
-                AddAssert("left loading spinner shown", () => resultsScreen.LeftSpinner.State.Value == Visibility.Visible);
                 waitForDisplay();
 
                 AddAssert($"count increased by {scores_per_result}", () => this.ChildrenOfType<ScorePanel>().Count() == beforePanelCount + scores_per_result);
-                AddAssert("left loading spinner hidden", () => resultsScreen.LeftSpinner.State.Value == Visibility.Hidden);
+                AddAssert("left loading spinner hidden", () =>
+                    resultsScreen.ChildrenOfType<LoadingSpinner>().Single(l => l.Anchor == Anchor.CentreLeft).State.Value == Visibility.Hidden);
             }
         }
 
+        /// <summary>
+        /// Shows the <see cref="TestUserBestResultsScreen"/> with no scores provided by the API.
+        /// </summary>
         [Test]
-        public void TestShowWithNoScores()
+        public void TestShowUserBestWithNoScoresPresent()
         {
             AddStep("bind user score info handler", () => bindHandler(noScores: true));
-            createResults();
+            createUserBestResults();
-            AddAssert("no scores visible", () => !resultsScreen.ScorePanelList.GetScorePanels().Any());
+            AddAssert("no scores visible", () => !resultsScreen.ChildrenOfType<ScorePanelList>().Single().GetScorePanels().Any());
             AddAssert("placeholder shown", () => this.ChildrenOfType<MessagePlaceholder>().Count(), () => Is.EqualTo(1));
         }
 
-        private void createResults(Func<ScoreInfo>? getScore = null)
+        private void createResultsWithScore(Func<ScoreInfo> getScore)
         {
             AddStep("load results", () =>
             {
-                LoadScreen(resultsScreen = new TestResultsScreen(getScore?.Invoke(), 1, new PlaylistItem(new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo)
+                LoadScreen(resultsScreen = new TestScoreResultsScreen(getScore(), 1, new PlaylistItem(new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo)
                 {
                     RulesetID = new OsuRuleset().RulesetInfo.OnlineID
                 }));
@@ -215,14 +245,27 @@ namespace osu.Game.Tests.Visual.Playlists
             AddUntilStep("wait for screen to load", () => resultsScreen.IsLoaded);
         }
 
+        private void createUserBestResults()
+        {
+            AddStep("load results", () =>
+            {
+                LoadScreen(resultsScreen = new TestUserBestResultsScreen(1, new PlaylistItem(new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo)
+                {
+                    RulesetID = new OsuRuleset().RulesetInfo.OnlineID
+                }, 2));
+            });
+
+            AddUntilStep("wait for screen to load", () => resultsScreen.IsLoaded);
+        }
+
         private void waitForDisplay()
         {
             AddUntilStep("wait for scores loaded", () =>
                 requestComplete
                 // request handler may need to fire more than once to get scores.
                 && totalCount > 0
-                && resultsScreen.ScorePanelList.GetScorePanels().Count() == totalCount
+                && resultsScreen.ChildrenOfType<ScorePanelList>().Single().GetScorePanels().Count() == totalCount
-                && resultsScreen.ScorePanelList.AllPanelsVisible);
+                && resultsScreen.ChildrenOfType<ScorePanelList>().Single().AllPanelsVisible);
             AddWaitStep("wait for display", 5);
         }
 
@@ -231,6 +274,7 @@ namespace osu.Game.Tests.Visual.Playlists
             // pre-check for requests we should be handling (as they are scheduled below).
             switch (request)
             {
+                case ShowPlaylistScoreRequest:
                 case ShowPlaylistUserScoreRequest:
                 case IndexPlaylistScoresRequest:
                     break;
@@ -253,7 +297,7 @@ namespace osu.Game.Tests.Visual.Playlists
 
                 switch (request)
                 {
-                    case ShowPlaylistUserScoreRequest s:
+                    case ShowPlaylistScoreRequest s:
                         if (userScore == null)
                             triggerFail(s);
                         else
@@ -261,6 +305,14 @@ namespace osu.Game.Tests.Visual.Playlists
 
                         break;
 
+                    case ShowPlaylistUserScoreRequest u:
+                        if (userScore == null)
+                            triggerFail(u);
+                        else
+                            triggerSuccess(u, createUserResponse(userScore));
+
+                        break;
+
                     case IndexPlaylistScoresRequest i:
                         triggerSuccess(i, createIndexResponse(i, noScores));
                         break;
@@ -314,7 +366,7 @@ namespace osu.Game.Tests.Visual.Playlists
                     MaxCombo = userScore.MaxCombo,
                     User = new APIUser
                     {
-                        Id = 2,
+                        Id = 2 + i,
                         Username = $"peppy{i}",
                         CoverUrl = "https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
                     },
@@ -329,7 +381,7 @@ namespace osu.Game.Tests.Visual.Playlists
                     MaxCombo = userScore.MaxCombo,
                     User = new APIUser
                     {
-                        Id = 2,
+                        Id = 2 + i,
                         Username = $"peppy{i}",
                         CoverUrl = "https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
                     },
@@ -363,7 +415,7 @@ namespace osu.Game.Tests.Visual.Playlists
                     MaxCombo = 1000,
                     User = new APIUser
                     {
-                        Id = 2,
+                        Id = 2 + i,
                         Username = $"peppy{i}",
                         CoverUrl = "https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
                     },
@@ -410,18 +462,22 @@ namespace osu.Game.Tests.Visual.Playlists
             };
         }
 
-        private partial class TestResultsScreen : PlaylistItemUserResultsScreen
+        private partial class TestScoreResultsScreen : PlaylistItemScoreResultsScreen
         {
-            public new LoadingSpinner LeftSpinner => base.LeftSpinner;
+            public TestScoreResultsScreen(ScoreInfo score, int roomId, PlaylistItem playlistItem)
-            public new LoadingSpinner CentreSpinner => base.CentreSpinner;
-            public new LoadingSpinner RightSpinner => base.RightSpinner;
-            public new ScorePanelList ScorePanelList => base.ScorePanelList;
-
-            public TestResultsScreen(ScoreInfo? score, int roomId, PlaylistItem playlistItem)
                 : base(score, roomId, playlistItem)
             {
                 AllowRetry = true;
             }
         }
+
+        private partial class TestUserBestResultsScreen : PlaylistItemUserBestResultsScreen
+        {
+            public TestUserBestResultsScreen(int roomId, PlaylistItem playlistItem, int userId)
+                : base(roomId, playlistItem, userId)
+            {
+                AllowRetry = true;
+            }
+        }
     }
 }

osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomSubScreen.cs

@@ -2,8 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Allocation;
 using osu.Framework.Screens;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
 using osu.Game.Online.Rooms.RoomStatuses;
@@ -14,6 +19,9 @@ namespace osu.Game.Tests.Visual.Playlists
 {
     public partial class TestScenePlaylistsRoomSubScreen : OnlinePlayTestScene
     {
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
         protected new TestRoomManager RoomManager => (TestRoomManager)base.RoomManager;
 
         [Test]
@@ -37,5 +45,29 @@ namespace osu.Game.Tests.Visual.Playlists
             AddUntilStep("wait for screen load", () => roomScreen.IsCurrentScreen());
             AddAssert("status is still ended", () => roomScreen.Room.Status, Is.TypeOf<RoomStatusEnded>);
         }
+
+        [Test]
+        public void TestCloseButtonGoesAwayAfterGracePeriod()
+        {
+            Room room = null!;
+            PlaylistsRoomSubScreen roomScreen = null!;
+
+            AddStep("create room", () =>
+            {
+                RoomManager.AddRoom(room = new Room
+                {
+                    Name = @"Test Room",
+                    Host = api.LocalUser.Value,
+                    Category = RoomCategory.Normal,
+                    StartDate = DateTimeOffset.Now.AddMinutes(-5).AddSeconds(3),
+                    EndDate = DateTimeOffset.Now.AddMinutes(30)
+                });
+            });
+
+            AddStep("push screen", () => LoadScreen(roomScreen = new PlaylistsRoomSubScreen(room)));
+            AddUntilStep("wait for screen load", () => roomScreen.IsCurrentScreen());
+            AddAssert("close button present", () => roomScreen.ChildrenOfType<DangerousRoundedButton>().Any());
+            AddUntilStep("wait for close button to disappear", () => !roomScreen.ChildrenOfType<DangerousRoundedButton>().Any());
+        }
     }
 }

osu.Game.Tests/Visual/Ranking/TestSceneOverallRanking.cs

@@ -112,6 +112,6 @@ namespace osu.Game.Tests.Visual.Ranking
         });
 
         private void displayUpdate(UserStatistics before, UserStatistics after) =>
-            AddStep("display update", () => overallRanking.StatisticsUpdate.Value = new UserStatisticsUpdate(new ScoreInfo(), before, after));
+            AddStep("display update", () => overallRanking.StatisticsUpdate.Value = new ScoreBasedUserStatisticsUpdate(new ScoreInfo(), before, after));
     }
 }

osu.Game.Tests/Visual/Ranking/TestSceneStatisticsPanel.cs

@@ -91,12 +91,12 @@ namespace osu.Game.Tests.Visual.Ranking
             UserStatisticsWatcher userStatisticsWatcher = null!;
             ScoreInfo score = null!;
 
-            AddStep("create user statistics watcher", () => Add(userStatisticsWatcher = new UserStatisticsWatcher()));
+            AddStep("create user statistics watcher", () => Add(userStatisticsWatcher = new UserStatisticsWatcher(new LocalUserStatisticsProvider())));
             AddStep("set user statistics update", () =>
             {
                 score = TestResources.CreateTestScoreInfo();
                 score.OnlineID = 1234;
-                ((Bindable<UserStatisticsUpdate>)userStatisticsWatcher.LatestUpdate).Value = new UserStatisticsUpdate(score,
+                ((Bindable<ScoreBasedUserStatisticsUpdate>)userStatisticsWatcher.LatestUpdate).Value = new ScoreBasedUserStatisticsUpdate(score,
                     new UserStatistics
                     {
                         Level = new UserStatistics.LevelInfo
@@ -157,7 +157,7 @@ namespace osu.Game.Tests.Visual.Ranking
                 Score = { Value = score },
                 DisplayedUserStatisticsUpdate =
                 {
-                    Value = new UserStatisticsUpdate(score, new UserStatistics
+                    Value = new ScoreBasedUserStatisticsUpdate(score, new UserStatistics
                     {
                         Level = new UserStatistics.LevelInfo
                         {

osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs

@@ -8,14 +8,14 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using NUnit.Framework;
-using osu.Framework.Allocation;
-using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Platform;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Database;
 using osu.Game.Extensions;
 using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Catch;
 using osu.Game.Rulesets.Mania;
@@ -28,25 +28,31 @@ namespace osu.Game.Tests.Visual.SongSelect
 {
     public partial class TestSceneBeatmapRecommendations : OsuGameTestScene
     {
-        [Resolved]
-        private IRulesetStore rulesetStore { get; set; }
-
         [SetUpSteps]
         public override void SetUpSteps()
         {
             AddStep("populate ruleset statistics", () =>
             {
-                Dictionary<string, UserStatistics> rulesetStatistics = new Dictionary<string, UserStatistics>();
+                ((DummyAPIAccess)API).HandleRequest = r =>
-
-                rulesetStore.AvailableRulesets.Where(ruleset => ruleset.IsLegacyRuleset()).ForEach(rulesetInfo =>
                 {
-                    rulesetStatistics[rulesetInfo.ShortName] = new UserStatistics
+                    switch (r)
                     {
-                        PP = getNecessaryPP(rulesetInfo.OnlineID)
+                        case GetUserRequest userRequest:
-                    };
+                            userRequest.TriggerSuccess(new APIUser
-                });
+                            {
+                                Id = 99,
+                                Statistics = new UserStatistics
+                                {
+                                    PP = getNecessaryPP(userRequest.Ruleset?.OnlineID ?? 0)
+                                }
+                            });
 
-                API.LocalUser.Value.RulesetsStatistics = rulesetStatistics;
+                            return true;
+
+                        default:
+                            return false;
+                    }
+                };
             });
 
             decimal getNecessaryPP(int? rulesetID)

osu.Game/Beatmaps/BeatmapManager.cs

@@ -408,7 +408,7 @@ namespace osu.Game.Beatmaps
                     // user requested abort
                     return;
 
-                var video = b.Files.FirstOrDefault(f => OsuGameBase.VIDEO_EXTENSIONS.Any(ex => f.Filename.EndsWith(ex, StringComparison.OrdinalIgnoreCase)));
+                var video = b.Files.FirstOrDefault(f => SupportedExtensions.VIDEO_EXTENSIONS.Any(ex => f.Filename.EndsWith(ex, StringComparison.OrdinalIgnoreCase)));
 
                 if (video != null)
                 {
@@ -559,7 +559,11 @@ namespace osu.Game.Beatmaps
                 // If we seem to be missing files, now is a good time to re-fetch.
                 bool missingFiles = beatmapInfo.BeatmapSet?.Files.Count == 0;
 
-                if (refetch || beatmapInfo.IsManaged || missingFiles)
+                if (beatmapInfo.IsManaged)
+                {
+                    beatmapInfo = beatmapInfo.Detach();
+                }
+                else if (refetch || missingFiles)
                 {
                     Guid id = beatmapInfo.ID;
                     beatmapInfo = Realm.Run(r => r.Find<BeatmapInfo>(id)?.Detach()) ?? beatmapInfo;

osu.Game/Beatmaps/DifficultyRecommender.cs

@@ -9,9 +9,11 @@ using System.Linq;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
-using osu.Game.Online.API;
+using osu.Game.Online;
 using osu.Game.Rulesets;
+using osu.Game.Users;
 
 namespace osu.Game.Beatmaps
 {
@@ -21,18 +23,63 @@ namespace osu.Game.Beatmaps
     /// </summary>
     public partial class DifficultyRecommender : Component
     {
-        [Resolved]
+        private readonly LocalUserStatisticsProvider statisticsProvider;
-        private IAPIProvider api { get; set; }
 
         [Resolved]
-        private Bindable<RulesetInfo> ruleset { get; set; }
+        private Bindable<RulesetInfo> gameRuleset { get; set; }
+
+        [Resolved]
+        private RulesetStore rulesets { get; set; } = null!;
 
         private readonly Dictionary<string, double> recommendedDifficultyMapping = new Dictionary<string, double>();
 
+        /// <returns>
+        /// Rulesets ordered descending by their respective recommended difficulties.
+        /// The currently selected ruleset will always be first.
+        /// </returns>
+        private IEnumerable<string> orderedRulesets
+        {
+            get
+            {
+                if (LoadState < LoadState.Ready || gameRuleset.Value == null)
+                    return Enumerable.Empty<string>();
+
+                return recommendedDifficultyMapping
+                       .OrderByDescending(pair => pair.Value)
+                       .Select(pair => pair.Key)
+                       .Where(r => !r.Equals(gameRuleset.Value.ShortName, StringComparison.Ordinal))
+                       .Prepend(gameRuleset.Value.ShortName);
+            }
+        }
+
+        public DifficultyRecommender(LocalUserStatisticsProvider statisticsProvider)
+        {
+            this.statisticsProvider = statisticsProvider;
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {
-            api.LocalUser.BindValueChanged(_ => populateValues(), true);
+            foreach (var ruleset in rulesets.AvailableRulesets)
+            {
+                if (statisticsProvider.GetStatisticsFor(ruleset) is UserStatistics statistics)
+                    updateMapping(ruleset, statistics);
+            }
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            statisticsProvider.StatisticsUpdated += onStatisticsUpdated;
+        }
+
+        private void onStatisticsUpdated(UserStatisticsUpdate update) => updateMapping(update.Ruleset, update.NewStatistics);
+
+        private void updateMapping(RulesetInfo ruleset, UserStatistics statistics)
+        {
+            // algorithm taken from https://github.com/ppy/osu-web/blob/e6e2825516449e3d0f3f5e1852c6bdd3428c3437/app/Models/User.php#L1505
+            recommendedDifficultyMapping[ruleset.ShortName] = Math.Pow((double)(statistics.PP ?? 0), 0.4) * 0.195;
         }
 
         /// <summary>
@@ -64,35 +111,12 @@ namespace osu.Game.Beatmaps
             return null;
         }
 
-        private void populateValues()
+        protected override void Dispose(bool isDisposing)
         {
-            if (api.LocalUser.Value.RulesetsStatistics == null)
+            if (statisticsProvider.IsNotNull())
-                return;
+                statisticsProvider.StatisticsUpdated -= onStatisticsUpdated;
 
-            foreach (var kvp in api.LocalUser.Value.RulesetsStatistics)
+            base.Dispose(isDisposing);
-            {
-                // algorithm taken from https://github.com/ppy/osu-web/blob/e6e2825516449e3d0f3f5e1852c6bdd3428c3437/app/Models/User.php#L1505
-                recommendedDifficultyMapping[kvp.Key] = Math.Pow((double)(kvp.Value.PP ?? 0), 0.4) * 0.195;
-            }
-        }
-
-        /// <returns>
-        /// Rulesets ordered descending by their respective recommended difficulties.
-        /// The currently selected ruleset will always be first.
-        /// </returns>
-        private IEnumerable<string> orderedRulesets
-        {
-            get
-            {
-                if (LoadState < LoadState.Ready || ruleset.Value == null)
-                    return Enumerable.Empty<string>();
-
-                return recommendedDifficultyMapping
-                       .OrderByDescending(pair => pair.Value)
-                       .Select(pair => pair.Key)
-                       .Where(r => !r.Equals(ruleset.Value.ShortName, StringComparison.Ordinal))
-                       .Prepend(ruleset.Value.ShortName);
-            }
         }
     }
 }

osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs

@@ -17,6 +17,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit;
+using osu.Game.Utils;
 
 namespace osu.Game.Beatmaps.Formats
 {
@@ -446,7 +447,7 @@ namespace osu.Game.Beatmaps.Formats
                         // Some very old beatmaps had incorrect type specifications for their backgrounds (ie. using 1 for VIDEO
                         // instead of 0 for BACKGROUND). To handle this gracefully, check the file extension against known supported
                         // video extensions and handle similar to a background if it doesn't match.
-                        if (!OsuGameBase.VIDEO_EXTENSIONS.Contains(Path.GetExtension(filename).ToLowerInvariant()))
+                        if (!SupportedExtensions.VIDEO_EXTENSIONS.Contains(Path.GetExtension(filename).ToLowerInvariant()))
                         {
                             beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
                             lineSupportedByEncoder = true;

osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs

@@ -10,6 +10,7 @@ using osu.Game.Beatmaps.Legacy;
 using osu.Game.IO;
 using osu.Game.Storyboards;
 using osu.Game.Storyboards.Commands;
+using osu.Game.Utils;
 using osuTK;
 using osuTK.Graphics;
 
@@ -112,7 +113,7 @@ namespace osu.Game.Beatmaps.Formats
                         //
                         // This avoids potential weird crashes when ffmpeg attempts to parse an image file as a video
                         // (see https://github.com/ppy/osu/issues/22829#issuecomment-1465552451).
-                        if (!OsuGameBase.VIDEO_EXTENSIONS.Contains(Path.GetExtension(path).ToLowerInvariant()))
+                        if (!SupportedExtensions.VIDEO_EXTENSIONS.Contains(Path.GetExtension(path).ToLowerInvariant()))
                             break;
 
                         storyboard.GetLayer("Video").Add(storyboardSprite = new StoryboardVideo(path, offset));

osu.Game/Configuration/OsuConfigManager.cs

@@ -138,6 +138,7 @@ namespace osu.Game.Configuration
             SetDefault(OsuSetting.LightenDuringBreaks, true);
 
             SetDefault(OsuSetting.HitLighting, true);
+            SetDefault(OsuSetting.StarFountains, true);
 
             SetDefault(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Always);
             SetDefault(OsuSetting.ShowHealthDisplayWhenCantFail, true);
@@ -414,6 +415,7 @@ namespace osu.Game.Configuration
         NotifyOnPrivateMessage,
         UIHoldActivationDelay,
         HitLighting,
+        StarFountains,
         MenuBackgroundSource,
         GameplayDisableWinKey,
         SeasonalBackgroundMode,

osu.Game/Configuration/SessionStatics.cs

@@ -10,6 +10,7 @@ using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Scoring;
+using osu.Game.Screens.Play;
 
 namespace osu.Game.Configuration
 {
@@ -77,7 +78,8 @@ namespace osu.Game.Configuration
         TouchInputActive,
 
         /// <summary>
-        /// Stores the local user's last score (can be completed or aborted).
+        /// Contains the local user's last score (can be completed or aborted) after exiting <see cref="Player"/>.
+        /// Will be cleared to <c>null</c> when leaving <see cref="PlayerLoader"/>.
         /// </summary>
         LastLocalUserScore,
 

osu.Game/Database/StandardisedScoreMigrationTools.cs

@@ -245,8 +245,8 @@ namespace osu.Game.Database
             var scoreProcessor = ruleset.CreateScoreProcessor();
 
             // warning: ordering is important here - both total score and ranks are dependent on accuracy!
-            score.Accuracy = computeAccuracy(score, scoreProcessor);
+            score.Accuracy = ComputeAccuracy(score, scoreProcessor);
-            score.Rank = computeRank(score, scoreProcessor);
+            score.Rank = ComputeRank(score, scoreProcessor);
             (score.TotalScoreWithoutMods, score.TotalScore) = convertFromLegacyTotalScore(score, ruleset, beatmap);
         }
 
@@ -269,8 +269,8 @@ namespace osu.Game.Database
             var scoreProcessor = ruleset.CreateScoreProcessor();
 
             // warning: ordering is important here - both total score and ranks are dependent on accuracy!
-            score.Accuracy = computeAccuracy(score, scoreProcessor);
+            score.Accuracy = ComputeAccuracy(score, scoreProcessor);
-            score.Rank = computeRank(score, scoreProcessor);
+            score.Rank = ComputeRank(score, scoreProcessor);
             (score.TotalScoreWithoutMods, score.TotalScore) = convertFromLegacyTotalScore(score, ruleset, difficulty, attributes);
         }
 
@@ -313,7 +313,8 @@ namespace osu.Game.Database
         /// <param name="difficulty">The beatmap difficulty.</param>
         /// <param name="attributes">The legacy scoring attributes for the beatmap which the score was set on.</param>
         /// <returns>The standardised total score.</returns>
-        private static (long withoutMods, long withMods) convertFromLegacyTotalScore(ScoreInfo score, Ruleset ruleset, LegacyBeatmapConversionDifficultyInfo difficulty, LegacyScoreAttributes attributes)
+        private static (long withoutMods, long withMods) convertFromLegacyTotalScore(ScoreInfo score, Ruleset ruleset, LegacyBeatmapConversionDifficultyInfo difficulty,
+                                                                                     LegacyScoreAttributes attributes)
         {
             if (!score.IsLegacyScore)
                 return (score.TotalScoreWithoutMods, score.TotalScore);
@@ -620,24 +621,31 @@ namespace osu.Game.Database
             }
         }
 
-        private static double computeAccuracy(ScoreInfo scoreInfo, ScoreProcessor scoreProcessor)
+        public static double ComputeAccuracy(ScoreInfo scoreInfo, ScoreProcessor scoreProcessor)
+            => ComputeAccuracy(scoreInfo.Statistics, scoreInfo.MaximumStatistics, scoreProcessor);
+
+        public static double ComputeAccuracy(IReadOnlyDictionary<HitResult, int> statistics, IReadOnlyDictionary<HitResult, int> maximumStatistics, ScoreProcessor scoreProcessor)
         {
-            int baseScore = scoreInfo.Statistics.Where(kvp => kvp.Key.AffectsAccuracy())
+            int baseScore = statistics.Where(kvp => kvp.Key.AffectsAccuracy())
-                                     .Sum(kvp => kvp.Value * scoreProcessor.GetBaseScoreForResult(kvp.Key));
+                                      .Sum(kvp => kvp.Value * scoreProcessor.GetBaseScoreForResult(kvp.Key));
-            int maxBaseScore = scoreInfo.MaximumStatistics.Where(kvp => kvp.Key.AffectsAccuracy())
+            int maxBaseScore = maximumStatistics.Where(kvp => kvp.Key.AffectsAccuracy())
-                                        .Sum(kvp => kvp.Value * scoreProcessor.GetBaseScoreForResult(kvp.Key));
+                                                .Sum(kvp => kvp.Value * scoreProcessor.GetBaseScoreForResult(kvp.Key));
 
             return maxBaseScore == 0 ? 1 : baseScore / (double)maxBaseScore;
         }
 
-        public static ScoreRank ComputeRank(ScoreInfo scoreInfo) => computeRank(scoreInfo, scoreInfo.Ruleset.CreateInstance().CreateScoreProcessor());
+        public static ScoreRank ComputeRank(ScoreInfo scoreInfo) =>
+            ComputeRank(scoreInfo.Accuracy, scoreInfo.Statistics, scoreInfo.Mods, scoreInfo.Ruleset.CreateInstance().CreateScoreProcessor());
 
-        private static ScoreRank computeRank(ScoreInfo scoreInfo, ScoreProcessor scoreProcessor)
+        public static ScoreRank ComputeRank(ScoreInfo scoreInfo, ScoreProcessor processor) =>
+            ComputeRank(scoreInfo.Accuracy, scoreInfo.Statistics, scoreInfo.Mods, processor);
+
+        public static ScoreRank ComputeRank(double accuracy, IReadOnlyDictionary<HitResult, int> statistics, IList<Mod> mods, ScoreProcessor scoreProcessor)
         {
-            var rank = scoreProcessor.RankFromScore(scoreInfo.Accuracy, scoreInfo.Statistics);
+            var rank = scoreProcessor.RankFromScore(accuracy, statistics);
 
-            foreach (var mod in scoreInfo.Mods.OfType<IApplicableToScoreProcessor>())
+            foreach (var mod in mods.OfType<IApplicableToScoreProcessor>())
-                rank = mod.AdjustRank(rank, scoreInfo.Accuracy);
+                rank = mod.AdjustRank(rank, accuracy);
 
             return rank;
         }

osu.Game/Graphics/UserInterfaceV2/OsuFileSelector.cs

@@ -13,6 +13,7 @@ using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2.FileSelection;
 using osu.Game.Overlays;
+using osu.Game.Utils;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -96,24 +97,18 @@ namespace osu.Game.Graphics.UserInterfaceV2
             {
                 get
                 {
-                    if (OsuGameBase.VIDEO_EXTENSIONS.Contains(File.Extension.ToLowerInvariant()))
+                    string extension = File.Extension.ToLowerInvariant();
+
+                    if (SupportedExtensions.VIDEO_EXTENSIONS.Contains(extension))
                         return FontAwesome.Regular.FileVideo;
 
-                    switch (File.Extension)
+                    if (SupportedExtensions.AUDIO_EXTENSIONS.Contains(extension))
-                    {
+                        return FontAwesome.Regular.FileAudio;
-                        case @".ogg":
-                        case @".mp3":
-                        case @".wav":
-                            return FontAwesome.Regular.FileAudio;
 
-                        case @".jpg":
+                    if (SupportedExtensions.IMAGE_EXTENSIONS.Contains(extension))
-                        case @".jpeg":
+                        return FontAwesome.Regular.FileImage;
-                        case @".png":
-                            return FontAwesome.Regular.FileImage;
 
-                        default:
+                    return FontAwesome.Regular.File;
-                            return FontAwesome.Regular.File;
-                    }
                 }
             }
 

osu.Game/Localisation/GameplaySettingsStrings.cs

@@ -74,6 +74,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString FadePlayfieldWhenHealthLow => new TranslatableString(getKey(@"fade_playfield_when_health_low"), @"Fade playfield to red when health is low");
 
+        /// <summary>
+        /// "Star fountains"
+        /// </summary>
+        public static LocalisableString StarFountains => new TranslatableString(getKey(@"star_fountains"), @"Star fountains");
+
         /// <summary>
         /// "Always show key overlay"
         /// </summary>

osu.Game/Localisation/MenuTipStrings.cs

@@ -0,0 +1,154 @@
+// 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 osu.Framework.Localisation;
+
+namespace osu.Game.Localisation
+{
+    public static class MenuTipStrings
+    {
+        private const string prefix = @"osu.Game.Resources.Localisation.MenuTip";
+
+        /// <summary>
+        /// "Press Ctrl-T anywhere in the game to toggle the toolbar!"
+        /// </summary>
+        public static LocalisableString ToggleToolbarShortcut => new TranslatableString(getKey(@"toggle_toolbar_shortcut"), @"Press Ctrl-T anywhere in the game to toggle the toolbar!");
+
+        /// <summary>
+        /// "Press Ctrl-O anywhere in the game to access settings!"
+        /// </summary>
+        public static LocalisableString GameSettingsShortcut => new TranslatableString(getKey(@"game_settings_shortcut"), @"Press Ctrl-O anywhere in the game to access settings!");
+
+        /// <summary>
+        /// "All settings are dynamic and take effect in real-time. Try changing the skin while watching autoplay!"
+        /// </summary>
+        public static LocalisableString DynamicSettings => new TranslatableString(getKey(@"dynamic_settings"), @"All settings are dynamic and take effect in real-time. Try changing the skin while watching autoplay!");
+
+        /// <summary>
+        /// "New features are coming online every update. Make sure to stay up-to-date!"
+        /// </summary>
+        public static LocalisableString NewFeaturesAreComingOnline => new TranslatableString(getKey(@"new_features_are_coming_online"), @"New features are coming online every update. Make sure to stay up-to-date!");
+
+        /// <summary>
+        /// "If you find the UI too large or small, try adjusting UI scale in settings!"
+        /// </summary>
+        public static LocalisableString UIScalingSettings => new TranslatableString(getKey(@"ui_scaling_settings"), @"If you find the UI too large or small, try adjusting UI scale in settings!");
+
+        /// <summary>
+        /// "Try adjusting the &quot;Screen Scaling&quot; mode to change your gameplay or UI area, even in fullscreen!"
+        /// </summary>
+        public static LocalisableString ScreenScalingSettings => new TranslatableString(getKey(@"screen_scaling_settings"), @"Try adjusting the ""Screen Scaling"" mode to change your gameplay or UI area, even in fullscreen!");
+
+        /// <summary>
+        /// "What used to be &quot;osu!direct&quot; is available to all users just like on the website. You can access it anywhere using Ctrl-B!"
+        /// </summary>
+        public static LocalisableString FreeOsuDirect => new TranslatableString(getKey(@"free_osu_direct"), @"What used to be ""osu!direct"" is available to all users just like on the website. You can access it anywhere using Ctrl-B!");
+
+        /// <summary>
+        /// "Seeking in replays is available by dragging on the progress bar at the bottom of the screen or by using the left and right arrow keys!"
+        /// </summary>
+        public static LocalisableString ReplaySeeking => new TranslatableString(getKey(@"replay_seeking"), @"Seeking in replays is available by dragging on the progress bar at the bottom of the screen or by using the left and right arrow keys!");
+
+        /// <summary>
+        /// "Try scrolling right in mod select to find a bunch of new fun mods!"
+        /// </summary>
+        public static LocalisableString TryNewMods => new TranslatableString(getKey(@"try_new_mods"), @"Try scrolling right in mod select to find a bunch of new fun mods!");
+
+        /// <summary>
+        /// "Most of the web content (profiles, rankings, etc.) are available natively in-game from the icons on the toolbar!"
+        /// </summary>
+        public static LocalisableString EmbeddedWebContent => new TranslatableString(getKey(@"embedded_web_content"), @"Most of the web content (profiles, rankings, etc.) are available natively in-game from the icons on the toolbar!");
+
+        /// <summary>
+        /// "Get more details, hide or delete a beatmap by right-clicking on its panel at song select!"
+        /// </summary>
+        public static LocalisableString BeatmapRightClick => new TranslatableString(getKey(@"beatmap_right_click"), @"Get more details, hide or delete a beatmap by right-clicking on its panel at song select!");
+
+        /// <summary>
+        /// "Check out the &quot;playlists&quot; system, which lets users create their own custom and permanent leaderboards!"
+        /// </summary>
+        public static LocalisableString DiscoverPlaylists => new TranslatableString(getKey(@"discover_playlists"), @"Check out the ""playlists"" system, which lets users create their own custom and permanent leaderboards!");
+
+        /// <summary>
+        /// "Toggle advanced frame / thread statistics with Ctrl-F11!"
+        /// </summary>
+        public static LocalisableString ToggleAdvancedFPSCounter => new TranslatableString(getKey(@"toggle_advanced_fps_counter"), @"Toggle advanced frame / thread statistics with Ctrl-F11!");
+
+        /// <summary>
+        /// "You can pause during a replay by pressing Space!"
+        /// </summary>
+        public static LocalisableString ReplayPausing => new TranslatableString(getKey(@"replay_pausing"), @"You can pause during a replay by pressing Space!");
+
+        /// <summary>
+        /// "Most of the hotkeys in the game are configurable and can be changed to anything you want. Check the bindings panel under input settings!"
+        /// </summary>
+        public static LocalisableString ConfigurableHotkeys => new TranslatableString(getKey(@"configurable_hotkeys"), @"Most of the hotkeys in the game are configurable and can be changed to anything you want. Check the bindings panel under input settings!");
+
+        /// <summary>
+        /// "Your gameplay HUD can be customised by using the skin layout editor. Open it at any time via Ctrl-Shift-S!"
+        /// </summary>
+        public static LocalisableString SkinEditor => new TranslatableString(getKey(@"skin_editor"), @"Your gameplay HUD can be customised by using the skin layout editor. Open it at any time via Ctrl-Shift-S!");
+
+        /// <summary>
+        /// "You can create mod presets to make toggling your favourite mod combinations easier!"
+        /// </summary>
+        public static LocalisableString ModPresets => new TranslatableString(getKey(@"mod_presets"), @"You can create mod presets to make toggling your favourite mod combinations easier!");
+
+        /// <summary>
+        /// "Many mods have customisation settings that drastically change how they function. Click the Customise button in mod select to view settings!"
+        /// </summary>
+        public static LocalisableString ModCustomisationSettings => new TranslatableString(getKey(@"mod_customisation_settings"), @"Many mods have customisation settings that drastically change how they function. Click the Customise button in mod select to view settings!");
+
+        /// <summary>
+        /// "Press Ctrl-Shift-R to switch to a random skin!"
+        /// </summary>
+        public static LocalisableString RandomSkinShortcut => new TranslatableString(getKey(@"random_skin_shortcut"), @"Press Ctrl-Shift-R to switch to a random skin!");
+
+        /// <summary>
+        /// "While watching a replay, press Ctrl-H to toggle replay settings!"
+        /// </summary>
+        public static LocalisableString ToggleReplaySettingsShortcut => new TranslatableString(getKey(@"toggle_replay_settings_shortcut"), @"While watching a replay, press Ctrl-H to toggle replay settings!");
+
+        /// <summary>
+        /// "You can easily copy the mods from scores on a leaderboard by right-clicking on them!"
+        /// </summary>
+        public static LocalisableString CopyModsFromScore => new TranslatableString(getKey(@"copy_mods_from_score"), @"You can easily copy the mods from scores on a leaderboard by right-clicking on them!");
+
+        /// <summary>
+        /// "Ctrl-Enter at song select will start a beatmap in autoplay mode!"
+        /// </summary>
+        public static LocalisableString AutoplayBeatmapShortcut => new TranslatableString(getKey(@"autoplay_beatmap_shortcut"), @"Ctrl-Enter at song select will start a beatmap in autoplay mode!");
+
+        /// <summary>
+        /// "Multithreading support means that even with low &quot;FPS&quot; your input and judgements will be accurate!"
+        /// </summary>
+        public static LocalisableString MultithreadingSupport => new TranslatableString(getKey(@"multithreading_support"), @"Multithreading support means that even with low ""FPS"" your input and judgements will be accurate!");
+
+        /// <summary>
+        /// "All delete operations are temporary until exiting. Restore accidentally deleted content from the maintenance settings!"
+        /// </summary>
+        public static LocalisableString TemporaryDeleteOperations => new TranslatableString(getKey(@"temporary_delete_operations"), @"All delete operations are temporary until exiting. Restore accidentally deleted content from the maintenance settings!");
+
+        /// <summary>
+        /// "Take a look under the hood at performance counters and enable verbose performance logging with Ctrl-F2!"
+        /// </summary>
+        public static LocalisableString GlobalStatisticsShortcut => new TranslatableString(getKey(@"global_statistics_shortcut"), @"Take a look under the hood at performance counters and enable verbose performance logging with Ctrl-F2!");
+
+        /// <summary>
+        /// "When your gameplay HUD is hidden, you can press and hold Ctrl to view it temporarily!"
+        /// </summary>
+        public static LocalisableString PeekHUDWhenHidden => new TranslatableString(getKey(@"peek_hud_when_hidden"), @"When your gameplay HUD is hidden, you can press and hold Ctrl to view it temporarily!");
+
+        /// <summary>
+        /// "Drag and drop any image into the skin editor to load it in quickly!"
+        /// </summary>
+        public static LocalisableString DragAndDropImageInSkinEditor => new TranslatableString(getKey(@"drag_and_drop_image_in_skin_editor"), @"Drag and drop any image into the skin editor to load it in quickly!");
+
+        /// <summary>
+        /// "a tip for you:"
+        /// </summary>
+        public static LocalisableString MenuTipTitle => new TranslatableString(getKey(@"menu_tip_title"), @"a tip for you:");
+
+        private static string getKey(string key) => $@"{prefix}:{key}";
+    }
+}

osu.Game/Online/API/APIAccess.cs

@@ -59,7 +59,6 @@ namespace osu.Game.Online.API
         public IBindable<APIUser> LocalUser => localUser;
         public IBindableList<APIRelation> Friends => friends;
         public IBindable<UserActivity> Activity => activity;
-        public IBindable<UserStatistics> Statistics => statistics;
 
         public INotificationsClient NotificationsClient { get; }
 
@@ -74,8 +73,6 @@ namespace osu.Game.Online.API
         private Bindable<UserStatus?> configStatus { get; } = new Bindable<UserStatus?>();
         private Bindable<UserStatus?> localUserStatus { get; } = new Bindable<UserStatus?>();
 
-        private Bindable<UserStatistics> statistics { get; } = new Bindable<UserStatistics>();
-
         protected bool HasLogin => authentication.Token.Value != null || (!string.IsNullOrEmpty(ProvidedUsername) && !string.IsNullOrEmpty(password));
 
         private readonly CancellationTokenSource cancellationToken = new CancellationTokenSource();
@@ -604,14 +601,6 @@ namespace osu.Game.Online.API
             flushQueue();
         }
 
-        public void UpdateStatistics(UserStatistics newStatistics)
-        {
-            statistics.Value = newStatistics;
-
-            if (IsLoggedIn)
-                localUser.Value.Statistics = newStatistics;
-        }
-
         public void UpdateLocalFriends()
         {
             if (!IsLoggedIn)
@@ -630,11 +619,7 @@ namespace osu.Game.Online.API
 
         private static APIUser createGuestUser() => new GuestUser();
 
-        private void setLocalUser(APIUser user) => Scheduler.Add(() =>
+        private void setLocalUser(APIUser user) => Scheduler.Add(() => localUser.Value = user, false);
-        {
-            localUser.Value = user;
-            statistics.Value = user.Statistics;
-        }, false);
 
         protected override void Dispose(bool isDisposing)
         {

osu.Game/Online/API/DummyAPIAccess.cs

@@ -30,8 +30,6 @@ namespace osu.Game.Online.API
 
         public Bindable<UserActivity> Activity { get; } = new Bindable<UserActivity>();
 
-        public Bindable<UserStatistics?> Statistics { get; } = new Bindable<UserStatistics?>();
-
         public DummyNotificationsClient NotificationsClient { get; } = new DummyNotificationsClient();
         INotificationsClient IAPIProvider.NotificationsClient => NotificationsClient;
 
@@ -178,11 +176,6 @@ namespace osu.Game.Online.API
         private void onSuccessfulLogin()
         {
             state.Value = APIState.Online;
-            Statistics.Value = new UserStatistics
-            {
-                GlobalRank = 1,
-                CountryRank = 1
-            };
         }
 
         public void Logout()
@@ -193,14 +186,6 @@ namespace osu.Game.Online.API
             LocalUser.Value = new GuestUser();
         }
 
-        public void UpdateStatistics(UserStatistics newStatistics)
-        {
-            Statistics.Value = newStatistics;
-
-            if (IsLoggedIn)
-                LocalUser.Value.Statistics = newStatistics;
-        }
-
         public void UpdateLocalFriends()
         {
         }
@@ -220,7 +205,6 @@ namespace osu.Game.Online.API
         IBindable<APIUser> IAPIProvider.LocalUser => LocalUser;
         IBindableList<APIRelation> IAPIProvider.Friends => Friends;
         IBindable<UserActivity> IAPIProvider.Activity => Activity;
-        IBindable<UserStatistics?> IAPIProvider.Statistics => Statistics;
 
         /// <summary>
         /// Skip 2FA requirement for next login.

osu.Game/Online/API/IAPIProvider.cs

@@ -29,11 +29,6 @@ namespace osu.Game.Online.API
         /// </summary>
         IBindable<UserActivity> Activity { get; }
 
-        /// <summary>
-        /// The current user's online statistics.
-        /// </summary>
-        IBindable<UserStatistics?> Statistics { get; }
-
         /// <summary>
         /// The language supplied by this provider to API requests.
         /// </summary>
@@ -129,11 +124,6 @@ namespace osu.Game.Online.API
         /// </summary>
         void Logout();
 
-        /// <summary>
-        /// Sets Statistics bindable.
-        /// </summary>
-        void UpdateStatistics(UserStatistics newStatistics);
-
         /// <summary>
         /// Update the friends status of the current user.
         /// </summary>

osu.Game/Online/API/Requests/ClosePlaylistRequest.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 System.Net.Http;
+using osu.Framework.IO.Network;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class ClosePlaylistRequest : APIRequest
+    {
+        private readonly long roomId;
+
+        public ClosePlaylistRequest(long roomId)
+        {
+            this.roomId = roomId;
+        }
+
+        protected override WebRequest CreateWebRequest()
+        {
+            var request = base.CreateWebRequest();
+            request.Method = HttpMethod.Delete;
+            return request;
+        }
+
+        protected override string Target => $@"rooms/{roomId}";
+    }
+}

osu.Game/Online/API/Requests/Responses/APIUser.cs

@@ -223,8 +223,10 @@ namespace osu.Game.Online.API.Requests.Responses
 
         /// <summary>
         /// User statistics for the requested ruleset (in the case of a <see cref="GetUserRequest"/> or <see cref="GetFriendsRequest"/> response).
-        /// Otherwise empty.
         /// </summary>
+        /// <remarks>
+        /// This returns null when accessed from <see cref="IAPIProvider.LocalUser"/>. Use <see cref="LocalUserStatisticsProvider"/> instead.
+        /// </remarks>
         [JsonProperty(@"statistics")]
         public UserStatistics Statistics
         {

osu.Game/Online/Chat/Channel.cs

@@ -161,7 +161,7 @@ namespace osu.Game.Online.Chat
             Messages.AddRange(messages);
 
             long? maxMessageId = messages.Max(m => m.Id);
-            if (maxMessageId > LastMessageId)
+            if (LastMessageId == null || maxMessageId > LastMessageId)
                 LastMessageId = maxMessageId;
 
             purgeOldMessages();

osu.Game/Online/LocalUserStatisticsProvider.cs

@@ -0,0 +1,92 @@
+// 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;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Extensions;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Rulesets;
+using osu.Game.Users;
+
+namespace osu.Game.Online
+{
+    /// <summary>
+    /// A component that keeps track of the latest statistics for the local user.
+    /// </summary>
+    public partial class LocalUserStatisticsProvider : Component
+    {
+        /// <summary>
+        /// Invoked whenever a change occured to the statistics of any ruleset,
+        /// either due to change in local user (log out and log in) or as a result of score submission.
+        /// </summary>
+        /// <remarks>
+        /// This does not guarantee the presence of the old statistics,
+        /// specifically in the case of initial population or change in local user.
+        /// </remarks>
+        public event Action<UserStatisticsUpdate>? StatisticsUpdated;
+
+        [Resolved]
+        private RulesetStore rulesets { get; set; } = null!;
+
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
+        private readonly Dictionary<string, UserStatistics> statisticsCache = new Dictionary<string, UserStatistics>();
+
+        /// <summary>
+        /// Returns the <see cref="UserStatistics"/> currently available for the given ruleset.
+        /// This may return null if the requested statistics has not been fetched before yet.
+        /// </summary>
+        /// <param name="ruleset">The ruleset to return the corresponding <see cref="UserStatistics"/> for.</param>
+        public UserStatistics? GetStatisticsFor(RulesetInfo ruleset) => statisticsCache.GetValueOrDefault(ruleset.ShortName);
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            api.LocalUser.BindValueChanged(_ =>
+            {
+                // queuing up requests directly on user change is unsafe, as the API status may have not been updated yet.
+                // schedule a frame to allow the API to be in its correct state sending requests.
+                Schedule(initialiseStatistics);
+            }, true);
+        }
+
+        private void initialiseStatistics()
+        {
+            statisticsCache.Clear();
+
+            if (api.LocalUser.Value == null || api.LocalUser.Value.Id <= 1)
+                return;
+
+            foreach (var ruleset in rulesets.AvailableRulesets.Where(r => r.IsLegacyRuleset()))
+                RefetchStatistics(ruleset);
+        }
+
+        public void RefetchStatistics(RulesetInfo ruleset, Action<UserStatisticsUpdate>? callback = null)
+        {
+            if (!ruleset.IsLegacyRuleset())
+                throw new InvalidOperationException($@"Retrieving statistics is not supported for ruleset {ruleset.ShortName}");
+
+            var request = new GetUserRequest(api.LocalUser.Value.Id, ruleset);
+            request.Success += u => UpdateStatistics(u.Statistics, ruleset, callback);
+            api.Queue(request);
+        }
+
+        protected void UpdateStatistics(UserStatistics newStatistics, RulesetInfo ruleset, Action<UserStatisticsUpdate>? callback = null)
+        {
+            var oldStatistics = statisticsCache.GetValueOrDefault(ruleset.ShortName);
+            statisticsCache[ruleset.ShortName] = newStatistics;
+
+            var update = new UserStatisticsUpdate(ruleset, oldStatistics, newStatistics);
+            callback?.Invoke(update);
+            StatisticsUpdated?.Invoke(update);
+        }
+    }
+
+    public record UserStatisticsUpdate(RulesetInfo Ruleset, UserStatistics? OldStatistics, UserStatistics NewStatistics);
+}

osu.Game/Online/Rooms/Room.cs

@@ -375,6 +375,7 @@ namespace osu.Game.Online.Rooms
             Type = other.Type;
             MaxParticipants = other.MaxParticipants;
             ParticipantCount = other.ParticipantCount;
+            StartDate = other.StartDate;
             EndDate = other.EndDate;
             UserScore = other.UserScore;
             QueueMode = other.QueueMode;

osu.Game/Online/ScoreBasedUserStatisticsUpdate.cs

@@ -9,7 +9,7 @@ namespace osu.Game.Online
     /// <summary>
     /// Contains data about the change in a user's profile statistics after completing a score.
     /// </summary>
-    public class UserStatisticsUpdate
+    public class ScoreBasedUserStatisticsUpdate
     {
         /// <summary>
         /// The score set by the user that triggered the update.
@@ -27,12 +27,12 @@ namespace osu.Game.Online
         public UserStatistics After { get; }
 
         /// <summary>
-        /// Creates a new <see cref="UserStatisticsUpdate"/>.
+        /// Creates a new <see cref="ScoreBasedUserStatisticsUpdate"/>.
         /// </summary>
         /// <param name="score">The score set by the user that triggered the update.</param>
         /// <param name="before">The user's profile statistics prior to the score being set.</param>
         /// <param name="after">The user's profile statistics after the score was set.</param>
-        public UserStatisticsUpdate(ScoreInfo score, UserStatistics before, UserStatistics after)
+        public ScoreBasedUserStatisticsUpdate(ScoreInfo score, UserStatistics before, UserStatistics after)
         {
             Score = score;
             Before = before;

osu.Game/Online/UserStatisticsWatcher.cs

@@ -2,18 +2,14 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
-using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Game.Extensions;
 using osu.Game.Online.API;
-using osu.Game.Online.API.Requests;
-using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Spectator;
 using osu.Game.Scoring;
-using osu.Game.Users;
 
 namespace osu.Game.Online
 {
@@ -22,8 +18,10 @@ namespace osu.Game.Online
     /// </summary>
     public partial class UserStatisticsWatcher : Component
     {
-        public IBindable<UserStatisticsUpdate?> LatestUpdate => latestUpdate;
+        private readonly LocalUserStatisticsProvider statisticsProvider;
-        private readonly Bindable<UserStatisticsUpdate?> latestUpdate = new Bindable<UserStatisticsUpdate?>();
+
+        public IBindable<ScoreBasedUserStatisticsUpdate?> LatestUpdate => latestUpdate;
+        private readonly Bindable<ScoreBasedUserStatisticsUpdate?> latestUpdate = new Bindable<ScoreBasedUserStatisticsUpdate?>();
 
         [Resolved]
         private SpectatorClient spectatorClient { get; set; } = null!;
@@ -33,13 +31,15 @@ namespace osu.Game.Online
 
         private readonly Dictionary<long, ScoreInfo> watchedScores = new Dictionary<long, ScoreInfo>();
 
-        private Dictionary<string, UserStatistics>? latestStatistics;
+        public UserStatisticsWatcher(LocalUserStatisticsProvider statisticsProvider)
+        {
+            this.statisticsProvider = statisticsProvider;
+        }
 
         protected override void LoadComplete()
         {
             base.LoadComplete();
 
-            api.LocalUser.BindValueChanged(user => onUserChanged(user.NewValue), true);
             spectatorClient.OnUserScoreProcessed += userScoreProcessed;
         }
 
@@ -61,35 +61,6 @@ namespace osu.Game.Online
             });
         }
 
-        private void onUserChanged(APIUser? localUser) => Schedule(() =>
-        {
-            latestStatistics = null;
-
-            if (localUser == null || localUser.OnlineID <= 1)
-                return;
-
-            var userRequest = new GetUsersRequest(new[] { localUser.OnlineID });
-            userRequest.Success += initialiseUserStatistics;
-            api.Queue(userRequest);
-        });
-
-        private void initialiseUserStatistics(GetUsersResponse response) => Schedule(() =>
-        {
-            var user = response.Users.SingleOrDefault();
-
-            // possible if the user is restricted or similar.
-            if (user == null)
-                return;
-
-            latestStatistics = new Dictionary<string, UserStatistics>();
-
-            if (user.RulesetsStatistics != null)
-            {
-                foreach (var rulesetStats in user.RulesetsStatistics)
-                    latestStatistics.Add(rulesetStats.Key, rulesetStats.Value);
-            }
-        });
-
         private void userScoreProcessed(int userId, long scoreId)
         {
             if (userId != api.LocalUser.Value?.OnlineID)
@@ -98,30 +69,11 @@ namespace osu.Game.Online
             if (!watchedScores.Remove(scoreId, out var scoreInfo))
                 return;
 
-            requestStatisticsUpdate(userId, scoreInfo);
+            statisticsProvider.RefetchStatistics(scoreInfo.Ruleset, u => Schedule(() =>
-        }
+            {
-
+                if (u.OldStatistics != null)
-        private void requestStatisticsUpdate(int userId, ScoreInfo scoreInfo)
+                    latestUpdate.Value = new ScoreBasedUserStatisticsUpdate(scoreInfo, u.OldStatistics, u.NewStatistics);
-        {
+            }));
-            var request = new GetUserRequest(userId, scoreInfo.Ruleset);
-            request.Success += user => Schedule(() => dispatchStatisticsUpdate(scoreInfo, user.Statistics));
-            api.Queue(request);
-        }
-
-        private void dispatchStatisticsUpdate(ScoreInfo scoreInfo, UserStatistics updatedStatistics)
-        {
-            string rulesetName = scoreInfo.Ruleset.ShortName;
-
-            api.UpdateStatistics(updatedStatistics);
-
-            if (latestStatistics == null)
-                return;
-
-            latestStatistics.TryGetValue(rulesetName, out UserStatistics? latestRulesetStatistics);
-            latestRulesetStatistics ??= new UserStatistics();
-
-            latestUpdate.Value = new UserStatisticsUpdate(scoreInfo, latestRulesetStatistics, updatedStatistics);
-            latestStatistics[rulesetName] = updatedStatistics;
         }
 
         protected override void Dispose(bool isDisposing)

osu.Game/OsuGame.cs

@@ -148,8 +148,7 @@ namespace osu.Game
         [Resolved]
         private FrameworkConfigManager frameworkConfig { get; set; }
 
-        [Cached]
+        private DifficultyRecommender difficultyRecommender;
-        private readonly DifficultyRecommender difficultyRecommender = new DifficultyRecommender();
 
         [Cached]
         private readonly LegacyImportManager legacyImportManager = new LegacyImportManager();
@@ -196,7 +195,8 @@ namespace osu.Game
 
         private MainMenu menuScreen;
 
-        private VersionManager versionManager;
+        [CanBeNull]
+        private DevBuildBanner devBuildBanner;
 
         [CanBeNull]
         private IntroScreen introScreen;
@@ -1056,10 +1056,7 @@ namespace osu.Game
             }, topMostOverlayContent.Add);
 
             if (!IsDeployedBuild)
-            {
+                loadComponentSingleFile(devBuildBanner = new DevBuildBanner(), ScreenContainer.Add);
-                dependencies.Cache(versionManager = new VersionManager());
-                loadComponentSingleFile(versionManager, ScreenContainer.Add);
-            }
 
             loadComponentSingleFile(osuLogo, _ =>
             {
@@ -1069,7 +1066,11 @@ namespace osu.Game
                 ScreenStack.Push(CreateLoader().With(l => l.RelativeSizeAxes = Axes.Both));
             });
 
-            loadComponentSingleFile(new UserStatisticsWatcher(), Add, true);
+            LocalUserStatisticsProvider statisticsProvider;
+
+            loadComponentSingleFile(statisticsProvider = new LocalUserStatisticsProvider(), Add, true);
+            loadComponentSingleFile(difficultyRecommender = new DifficultyRecommender(statisticsProvider), Add, true);
+            loadComponentSingleFile(new UserStatisticsWatcher(statisticsProvider), Add, true);
             loadComponentSingleFile(Toolbar = new Toolbar
             {
                 OnHome = delegate
@@ -1139,7 +1140,6 @@ namespace osu.Game
             loadComponentSingleFile(new BackgroundDataStoreProcessor(), Add);
             loadComponentSingleFile(new DetachedBeatmapStore(), Add, true);
 
-            Add(difficultyRecommender);
             Add(externalLinkOpener = new ExternalLinkOpener());
             Add(new MusicKeyBindingHandler());
             Add(new OnlineStatusNotifier(() => ScreenStack.CurrentScreen));
@@ -1562,12 +1562,12 @@ namespace osu.Game
             {
                 case IntroScreen intro:
                     introScreen = intro;
-                    versionManager?.Show();
+                    devBuildBanner?.Show();
                     break;
 
                 case MainMenu menu:
                     menuScreen = menu;
-                    versionManager?.Show();
+                    devBuildBanner?.Show();
                     break;
 
                 case Player player:
@@ -1575,7 +1575,7 @@ namespace osu.Game
                     break;
 
                 default:
-                    versionManager?.Hide();
+                    devBuildBanner?.Hide();
                     break;
             }
 

osu.Game/OsuGameBase.cs

@@ -73,8 +73,6 @@ namespace osu.Game
     [Cached(typeof(OsuGameBase))]
     public partial class OsuGameBase : Framework.Game, ICanAcceptFiles, IBeatSyncProvider
     {
-        public static readonly string[] VIDEO_EXTENSIONS = { ".mp4", ".mov", ".avi", ".flv", ".mpg", ".wmv", ".m4v" };
-
 #if DEBUG
         public const string GAME_NAME = "osu! (development)";
 #else

osu.Game/Overlays/Chat/ChannelList/ChannelList.cs

@@ -37,11 +37,13 @@ namespace osu.Game.Overlays.Chat.ChannelList
 
         private readonly Dictionary<Channel, ChannelListItem> channelMap = new Dictionary<Channel, ChannelListItem>();
 
+        public ChannelGroup AnnounceChannelGroup { get; private set; } = null!;
+        public ChannelGroup PublicChannelGroup { get; private set; } = null!;
+        public ChannelGroup PrivateChannelGroup { get; private set; } = null!;
+
         private OsuScrollContainer scroll = null!;
         private SearchContainer groupFlow = null!;
-        private ChannelGroup announceChannelGroup = null!;
+
-        private ChannelGroup publicChannelGroup = null!;
-        private ChannelGroup privateChannelGroup = null!;
         private ChannelListItem selector = null!;
         private TextBox searchTextBox = null!;
 
@@ -77,10 +79,10 @@ namespace osu.Game.Overlays.Chat.ChannelList
                                     RelativeSizeAxes = Axes.X,
                                 }
                             },
-                            announceChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitleANNOUNCE.ToUpper()),
+                            AnnounceChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitleANNOUNCE.ToUpper(), false),
-                            publicChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitlePUBLIC.ToUpper()),
+                            PublicChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitlePUBLIC.ToUpper(), false),
                             selector = new ChannelListItem(ChannelListingChannel),
-                            privateChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitlePM.ToUpper()),
+                            PrivateChannelGroup = new ChannelGroup(ChatStrings.ChannelsListTitlePM.ToUpper(), true),
                         },
                     },
                 },
@@ -111,69 +113,70 @@ namespace osu.Game.Overlays.Chat.ChannelList
             item.OnRequestSelect += chan => OnRequestSelect?.Invoke(chan);
             item.OnRequestLeave += chan => OnRequestLeave?.Invoke(chan);
 
-            FillFlowContainer<ChannelListItem> flow = getFlowForChannel(channel);
+            ChannelGroup group = getGroupFromChannel(channel);
             channelMap.Add(channel, item);
-            flow.Add(item);
+            group.AddChannel(item);
 
             updateVisibility();
         }
 
         public void RemoveChannel(Channel channel)
         {
-            if (!channelMap.ContainsKey(channel))
+            if (!channelMap.TryGetValue(channel, out var item))
                 return;
 
-            ChannelListItem item = channelMap[channel];
+            ChannelGroup group = getGroupFromChannel(channel);
-            FillFlowContainer<ChannelListItem> flow = getFlowForChannel(channel);
 
             channelMap.Remove(channel);
-            flow.Remove(item, true);
+            group.RemoveChannel(item);
 
             updateVisibility();
         }
 
         public ChannelListItem GetItem(Channel channel)
         {
-            if (!channelMap.ContainsKey(channel))
+            if (!channelMap.TryGetValue(channel, out var item))
                 throw new ArgumentOutOfRangeException();
 
-            return channelMap[channel];
+            return item;
         }
 
         public void ScrollChannelIntoView(Channel channel) => scroll.ScrollIntoView(GetItem(channel));
 
-        private FillFlowContainer<ChannelListItem> getFlowForChannel(Channel channel)
+        private ChannelGroup getGroupFromChannel(Channel channel)
         {
             switch (channel.Type)
             {
                 case ChannelType.Public:
-                    return publicChannelGroup.ItemFlow;
+                    return PublicChannelGroup;
 
                 case ChannelType.PM:
-                    return privateChannelGroup.ItemFlow;
+                    return PrivateChannelGroup;
 
                 case ChannelType.Announce:
-                    return announceChannelGroup.ItemFlow;
+                    return AnnounceChannelGroup;
 
                 default:
-                    return publicChannelGroup.ItemFlow;
+                    return PublicChannelGroup;
             }
         }
 
         private void updateVisibility()
         {
-            if (announceChannelGroup.ItemFlow.Children.Count == 0)
+            if (AnnounceChannelGroup.ItemFlow.Children.Count == 0)
-                announceChannelGroup.Hide();
+                AnnounceChannelGroup.Hide();
             else
-                announceChannelGroup.Show();
+                AnnounceChannelGroup.Show();
         }
 
-        private partial class ChannelGroup : FillFlowContainer
+        public partial class ChannelGroup : FillFlowContainer
         {
-            public readonly FillFlowContainer<ChannelListItem> ItemFlow;
+            private readonly bool sortByRecent;
+            public readonly ChannelListItemFlow ItemFlow;
 
-            public ChannelGroup(LocalisableString label)
+            public ChannelGroup(LocalisableString label, bool sortByRecent)
             {
+                this.sortByRecent = sortByRecent;
                 Direction = FillDirection.Vertical;
                 RelativeSizeAxes = Axes.X;
                 AutoSizeAxes = Axes.Y;
@@ -187,7 +190,7 @@ namespace osu.Game.Overlays.Chat.ChannelList
                         Margin = new MarginPadding { Left = 18, Bottom = 5 },
                         Font = OsuFont.Torus.With(size: 12, weight: FontWeight.SemiBold),
                     },
-                    ItemFlow = new FillFlowContainer<ChannelListItem>
+                    ItemFlow = new ChannelListItemFlow(sortByRecent)
                     {
                         Direction = FillDirection.Vertical,
                         RelativeSizeAxes = Axes.X,
@@ -195,6 +198,60 @@ namespace osu.Game.Overlays.Chat.ChannelList
                     },
                 };
             }
+
+            public partial class ChannelListItemFlow : FillFlowContainer<ChannelListItem>
+            {
+                private readonly bool sortByRecent;
+
+                public ChannelListItemFlow(bool sortByRecent)
+                {
+                    this.sortByRecent = sortByRecent;
+                }
+
+                public void Reflow() => InvalidateLayout();
+
+                public override IEnumerable<Drawable> FlowingChildren => sortByRecent
+                    ? base.FlowingChildren.OfType<ChannelListItem>().OrderByDescending(i => i.Channel.LastMessageId ?? long.MinValue)
+                    : base.FlowingChildren.OfType<ChannelListItem>().OrderBy(i => i.Channel.Name);
+            }
+
+            public void AddChannel(ChannelListItem item)
+            {
+                ItemFlow.Add(item);
+
+                if (sortByRecent)
+                {
+                    item.Channel.NewMessagesArrived += newMessagesArrived;
+                    item.Channel.PendingMessageResolved += pendingMessageResolved;
+                }
+
+                ItemFlow.Reflow();
+            }
+
+            public void RemoveChannel(ChannelListItem item)
+            {
+                if (sortByRecent)
+                {
+                    item.Channel.NewMessagesArrived -= newMessagesArrived;
+                    item.Channel.PendingMessageResolved -= pendingMessageResolved;
+                }
+
+                ItemFlow.Remove(item, true);
+            }
+
+            private void pendingMessageResolved(LocalEchoMessage _, Message __) => ItemFlow.Reflow();
+            private void newMessagesArrived(IEnumerable<Message> _) => ItemFlow.Reflow();
+
+            protected override void Dispose(bool isDisposing)
+            {
+                base.Dispose(isDisposing);
+
+                foreach (var item in ItemFlow)
+                {
+                    item.Channel.NewMessagesArrived -= newMessagesArrived;
+                    item.Channel.PendingMessageResolved -= pendingMessageResolved;
+                }
+            }
         }
 
         private partial class ChannelSearchTextBox : BasicSearchTextBox

osu.Game/Overlays/DevBuildBanner.cs

@@ -0,0 +1,58 @@
+// 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 osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osuTK;
+
+namespace osu.Game.Overlays
+{
+    public partial class DevBuildBanner : VisibilityContainer
+    {
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours, TextureStore textures, OsuGameBase game)
+        {
+            AutoSizeAxes = Axes.Both;
+
+            Anchor = Anchor.BottomCentre;
+            Origin = Anchor.BottomCentre;
+
+            Alpha = 0;
+
+            AddRange(new Drawable[]
+            {
+                new OsuSpriteText
+                {
+                    Anchor = Anchor.BottomCentre,
+                    Origin = Anchor.BottomCentre,
+                    Font = OsuFont.Numeric.With(weight: FontWeight.Bold, size: 12),
+                    Colour = colours.YellowDark,
+                    Text = @"DEVELOPER BUILD",
+                },
+                new Sprite
+                {
+                    Anchor = Anchor.BottomCentre,
+                    Origin = Anchor.BottomCentre,
+                    Texture = textures.Get(@"Menu/dev-build-footer"),
+                    Scale = new Vector2(0.4f, 1),
+                    Y = 2,
+                },
+            });
+        }
+
+        protected override void PopIn()
+        {
+            this.FadeIn(1400, Easing.OutQuint);
+        }
+
+        protected override void PopOut()
+        {
+            this.FadeOut(500, Easing.OutQuint);
+        }
+    }
+}

osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsTooltip.cs

@@ -138,34 +138,31 @@ namespace osu.Game.Overlays.Profile.Header.Components
             topFifty.ValueColour = colourProvider.Content2;
         }
 
-        // reference: https://github.com/ppy/osu-web/blob/adf1e94754ba9625b85eba795f4a310caf169eec/resources/js/profile-page/daily-challenge.tsx#L13-L47
+        // reference: https://github.com/ppy/osu-web/blob/a97f156014e00ea1aa315140da60542e798a9f06/resources/js/profile-page/daily-challenge.tsx#L13-L47
 
-        // Rounding up is needed here to ensure the overlay shows the same colour as osu-web for the play count.
+        public static RankingTier TierForPlayCount(int playCount) => TierForDaily((int)Math.Floor(playCount / 3.0d));
-        // This is because, for example, 31 / 3 > 10 in JavaScript because floats are used, while here it would
-        // get truncated to 10 with an integer division and show a lower tier.
-        public static RankingTier TierForPlayCount(int playCount) => TierForDaily((int)Math.Ceiling(playCount / 3.0d));
 
         public static RankingTier TierForDaily(int daily)
         {
-            if (daily > 360)
+            if (daily >= 360)
                 return RankingTier.Lustrous;
 
-            if (daily > 240)
+            if (daily >= 240)
                 return RankingTier.Radiant;
 
-            if (daily > 120)
+            if (daily >= 120)
                 return RankingTier.Rhodium;
 
-            if (daily > 60)
+            if (daily >= 60)
                 return RankingTier.Platinum;
 
-            if (daily > 30)
+            if (daily >= 30)
                 return RankingTier.Gold;
 
-            if (daily > 10)
+            if (daily >= 10)
                 return RankingTier.Silver;
 
-            if (daily > 5)
+            if (daily >= 5)
                 return RankingTier.Bronze;
 
             return RankingTier.Iron;

osu.Game/Overlays/Settings/Sections/Gameplay/GeneralSettings.cs

@@ -31,6 +31,11 @@ namespace osu.Game.Overlays.Settings.Sections.Gameplay
                     LabelText = GraphicsSettingsStrings.HitLighting,
                     Current = config.GetBindable<bool>(OsuSetting.HitLighting)
                 },
+                new SettingsCheckbox
+                {
+                    LabelText = GameplaySettingsStrings.StarFountains,
+                    Current = config.GetBindable<bool>(OsuSetting.StarFountains)
+                },
             };
         }
     }

osu.Game/Overlays/SkinEditor/SkinEditor.cs

@@ -35,6 +35,7 @@ using osu.Game.Screens.Edit.Components.Menus;
 using osu.Game.Skinning;
 using osu.Framework.Graphics.Cursor;
 using osu.Game.Input.Bindings;
+using osu.Game.Utils;
 
 namespace osu.Game.Overlays.SkinEditor
 {
@@ -709,7 +710,7 @@ namespace osu.Game.Overlays.SkinEditor
 
         Task ICanAcceptFiles.Import(ImportTask[] tasks, ImportParameters parameters) => throw new NotImplementedException();
 
-        public IEnumerable<string> HandledExtensions => new[] { ".jpg", ".jpeg", ".png" };
+        public IEnumerable<string> HandledExtensions => SupportedExtensions.IMAGE_EXTENSIONS;
 
         #endregion
 

osu.Game/Overlays/Toolbar/TransientUserStatisticsUpdateDisplay.cs

@@ -21,7 +21,7 @@ namespace osu.Game.Overlays.Toolbar
 {
     public partial class TransientUserStatisticsUpdateDisplay : CompositeDrawable
     {
-        public Bindable<UserStatisticsUpdate?> LatestUpdate { get; } = new Bindable<UserStatisticsUpdate?>();
+        public Bindable<ScoreBasedUserStatisticsUpdate?> LatestUpdate { get; } = new Bindable<ScoreBasedUserStatisticsUpdate?>();
 
         private Statistic<int> globalRank = null!;
         private Statistic<int> pp = null!;
@@ -48,7 +48,7 @@ namespace osu.Game.Overlays.Toolbar
             };
 
             if (userStatisticsWatcher != null)
-                ((IBindable<UserStatisticsUpdate?>)LatestUpdate).BindTo(userStatisticsWatcher.LatestUpdate);
+                ((IBindable<ScoreBasedUserStatisticsUpdate?>)LatestUpdate).BindTo(userStatisticsWatcher.LatestUpdate);
         }
 
         protected override void LoadComplete()

osu.Game/Overlays/VersionManager.cs

@@ -1,95 +0,0 @@
-// 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 osu.Framework.Allocation;
-using osu.Framework.Development;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Sprites;
-using osu.Framework.Graphics.Textures;
-using osu.Game.Graphics;
-using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
-
-namespace osu.Game.Overlays
-{
-    public partial class VersionManager : VisibilityContainer
-    {
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours, TextureStore textures, OsuGameBase game)
-        {
-            AutoSizeAxes = Axes.Both;
-            Anchor = Anchor.BottomCentre;
-            Origin = Anchor.BottomCentre;
-
-            Alpha = 0;
-
-            FillFlowContainer mainFill;
-
-            Children = new Drawable[]
-            {
-                mainFill = new FillFlowContainer
-                {
-                    AutoSizeAxes = Axes.Both,
-                    Direction = FillDirection.Vertical,
-                    Children = new Drawable[]
-                    {
-                        new FillFlowContainer
-                        {
-                            AutoSizeAxes = Axes.Both,
-                            Direction = FillDirection.Horizontal,
-                            Spacing = new Vector2(5),
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            Children = new Drawable[]
-                            {
-                                new OsuSpriteText
-                                {
-                                    Font = OsuFont.GetFont(weight: FontWeight.Bold),
-                                    Text = game.Name
-                                },
-                                new OsuSpriteText
-                                {
-                                    Colour = DebugUtils.IsDebugBuild ? colours.Red : Color4.White,
-                                    Text = game.Version
-                                },
-                            }
-                        },
-                    }
-                }
-            };
-
-            if (!game.IsDeployedBuild)
-            {
-                mainFill.AddRange(new Drawable[]
-                {
-                    new OsuSpriteText
-                    {
-                        Anchor = Anchor.TopCentre,
-                        Origin = Anchor.TopCentre,
-                        Font = OsuFont.Numeric.With(size: 12),
-                        Colour = colours.Yellow,
-                        Text = @"Development Build"
-                    },
-                    new Sprite
-                    {
-                        Anchor = Anchor.TopCentre,
-                        Origin = Anchor.TopCentre,
-                        Texture = textures.Get(@"Menu/dev-build-footer"),
-                    },
-                });
-            }
-        }
-
-        protected override void PopIn()
-        {
-            this.FadeIn(1400, Easing.OutQuint);
-        }
-
-        protected override void PopOut()
-        {
-            this.FadeOut(500, Easing.OutQuint);
-        }
-    }
-}

osu.Game/Rulesets/Edit/Checks/Components/AudioCheckUtils.cs

@@ -3,13 +3,12 @@
 
 using System.IO;
 using System.Linq;
+using osu.Game.Utils;
 
 namespace osu.Game.Rulesets.Edit.Checks.Components
 {
     public static class AudioCheckUtils
     {
-        public static readonly string[] AUDIO_EXTENSIONS = { "mp3", "ogg", "wav" };
+        public static bool HasAudioExtension(string filename) => SupportedExtensions.AUDIO_EXTENSIONS.Contains(Path.GetExtension(filename).ToLowerInvariant());
-
-        public static bool HasAudioExtension(string filename) => AUDIO_EXTENSIONS.Any(Path.GetExtension(filename).ToLowerInvariant().EndsWith);
     }
 }

osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs

@@ -205,7 +205,7 @@ namespace osu.Game.Rulesets.Mods
         {
             foreach (var hitObject in hitObjects)
             {
-                if (!(hitObject.HitWindows is HitWindows.EmptyHitWindows))
+                if (hitObject.HitWindows != HitWindows.Empty)
                     yield return hitObject;
 
                 foreach (HitObject nested in getAllApplicableHitObjects(hitObject.NestedHitObjects))

osu.Game/Rulesets/Scoring/HitEventExtensions.cs

@@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using osu.Game.Rulesets.Objects;
 
 namespace osu.Game.Rulesets.Scoring
 {
@@ -20,32 +21,36 @@ namespace osu.Game.Rulesets.Scoring
         /// A non-null <see langword="double"/> value if unstable rate could be calculated,
         /// and <see langword="null"/> if unstable rate cannot be calculated due to <paramref name="hitEvents"/> being empty.
         /// </returns>
-        public static double? CalculateUnstableRate(this IEnumerable<HitEvent> hitEvents)
+        public static UnstableRateCalculationResult? CalculateUnstableRate(this IReadOnlyList<HitEvent> hitEvents, UnstableRateCalculationResult? result = null)
         {
             Debug.Assert(hitEvents.All(ev => ev.GameplayRate != null));
 
-            int count = 0;
+            result ??= new UnstableRateCalculationResult();
-            double mean = 0;
-            double sumOfSquares = 0;
 
-            foreach (var e in hitEvents)
+            // Handle rewinding in the simplest way possible.
+            if (hitEvents.Count < result.EventCount + 1)
+                result = new UnstableRateCalculationResult();
+
+            for (int i = result.EventCount; i < hitEvents.Count; i++)
             {
+                HitEvent e = hitEvents[i];
+
                 if (!AffectsUnstableRate(e))
                     continue;
 
-                count++;
+                result.EventCount++;
 
                 // Division by gameplay rate is to account for TimeOffset scaling with gameplay rate.
                 double currentValue = e.TimeOffset / e.GameplayRate!.Value;
-                double nextMean = mean + (currentValue - mean) / count;
+                double nextMean = result.Mean + (currentValue - result.Mean) / result.EventCount;
-                sumOfSquares += (currentValue - mean) * (currentValue - nextMean);
+                result.SumOfSquares += (currentValue - result.Mean) * (currentValue - nextMean);
-                mean = nextMean;
+                result.Mean = nextMean;
             }
 
-            if (count == 0)
+            if (result.EventCount == 0)
                 return null;
 
-            return 10.0 * Math.Sqrt(sumOfSquares / count);
+            return result;
         }
 
         /// <summary>
@@ -65,6 +70,39 @@ namespace osu.Game.Rulesets.Scoring
             return timeOffsets.Average();
         }
 
-        public static bool AffectsUnstableRate(HitEvent e) => !(e.HitObject.HitWindows is HitWindows.EmptyHitWindows) && e.Result.IsHit();
+        public static bool AffectsUnstableRate(HitEvent e) => AffectsUnstableRate(e.HitObject, e.Result);
+        public static bool AffectsUnstableRate(HitObject hitObject, HitResult result) => hitObject.HitWindows != HitWindows.Empty && result.IsHit();
+
+        /// <summary>
+        /// Data type returned by <see cref="HitEventExtensions.CalculateUnstableRate"/> which allows efficient incremental processing.
+        /// </summary>
+        /// <remarks>
+        /// This should be passed back into future <see cref="HitEventExtensions.CalculateUnstableRate"/> calls as a parameter.
+        ///
+        /// The optimisations used here rely on hit events being a consecutive sequence from a single gameplay session.
+        /// When a new gameplay session is started, any existing results should be disposed.
+        /// </remarks>
+        public class UnstableRateCalculationResult
+        {
+            /// <summary>
+            /// Total events processed. For internal incremental calculation use.
+            /// </summary>
+            public int EventCount;
+
+            /// <summary>
+            /// Last sum-of-squares value. For internal incremental calculation use.
+            /// </summary>
+            public double SumOfSquares;
+
+            /// <summary>
+            /// Last mean value. For internal incremental calculation use.
+            /// </summary>
+            public double Mean;
+
+            /// <summary>
+            /// The unstable rate.
+            /// </summary>
+            public double Result => EventCount == 0 ? 0 : 10.0 * Math.Sqrt(SumOfSquares / EventCount);
+        }
     }
 }

osu.Game/Rulesets/Scoring/HitWindows.cs

@@ -36,7 +36,7 @@ namespace osu.Game.Rulesets.Scoring
         /// An empty <see cref="HitWindows"/> with only <see cref="HitResult.Miss"/> and <see cref="HitResult.Perfect"/>.
         /// No time values are provided (meaning instantaneous hit or miss).
         /// </summary>
-        public static HitWindows Empty => new EmptyHitWindows();
+        public static HitWindows Empty { get; } = new EmptyHitWindows();
 
         public HitWindows()
         {
@@ -182,7 +182,7 @@ namespace osu.Game.Rulesets.Scoring
         /// </summary>
         protected virtual DifficultyRange[] GetRanges() => base_ranges;
 
-        public class EmptyHitWindows : HitWindows
+        private class EmptyHitWindows : HitWindows
         {
             private static readonly DifficultyRange[] ranges =
             {

osu.Game/Scoring/ScoreManager.cs

@@ -78,7 +78,7 @@ namespace osu.Game.Scoring
         /// Perform a lookup query on available <see cref="ScoreInfo"/>s.
         /// </summary>
         /// <param name="query">The query.</param>
-        /// <returns>The first result for the provided query, or null if no results were found.</returns>
+        /// <returns>The first result for the provided query in its detached form, or null if no results were found.</returns>
         public ScoreInfo? Query(Expression<Func<ScoreInfo, bool>> query)
         {
             return Realm.Run(r => r.All<ScoreInfo>().FirstOrDefault(query)?.Detach());
@@ -88,8 +88,14 @@ namespace osu.Game.Scoring
         {
             ScoreInfo? databasedScoreInfo = null;
 
-            if (originalScoreInfo is ScoreInfo scoreInfo && !string.IsNullOrEmpty(scoreInfo.Hash))
+            if (originalScoreInfo is ScoreInfo scoreInfo)
-                databasedScoreInfo = Query(s => s.Hash == scoreInfo.Hash);
+            {
+                if (scoreInfo.IsManaged)
+                    return scoreInfo.Detach();
+
+                if (!string.IsNullOrEmpty(scoreInfo.Hash))
+                    databasedScoreInfo = Query(s => s.Hash == scoreInfo.Hash);
+            }
 
             if (originalScoreInfo.OnlineID > 0)
                 databasedScoreInfo ??= Query(s => s.OnlineID == originalScoreInfo.OnlineID);

osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs

@@ -258,6 +258,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         private void resetTernaryStates()
         {
+            if (SelectedItems.Count > 0)
+                return;
+
             SelectionNewComboState.Value = TernaryState.False;
             AutoSelectionBankEnabled.Value = true;
             SelectionAdditionBanksEnabled.Value = true;

osu.Game/Screens/Edit/Setup/ResourcesSection.cs

@@ -10,6 +10,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
 using osu.Game.Localisation;
+using osu.Game.Utils;
 
 namespace osu.Game.Screens.Edit.Setup
 {
@@ -48,12 +49,12 @@ namespace osu.Game.Screens.Edit.Setup
 
             Children = new Drawable[]
             {
-                backgroundChooser = new FormFileSelector(".jpg", ".jpeg", ".png")
+                backgroundChooser = new FormFileSelector(SupportedExtensions.IMAGE_EXTENSIONS)
                 {
                     Caption = GameplaySettingsStrings.BackgroundHeader,
                     PlaceholderText = EditorSetupStrings.ClickToSelectBackground,
                 },
-                audioTrackChooser = new FormFileSelector(".mp3", ".ogg")
+                audioTrackChooser = new FormFileSelector(SupportedExtensions.AUDIO_EXTENSIONS)
                 {
                     Caption = EditorSetupStrings.AudioTrack,
                     PlaceholderText = EditorSetupStrings.ClickToSelectTrack,

osu.Game/Screens/Menu/MainMenu.cs

@@ -79,9 +79,6 @@ namespace osu.Game.Screens.Menu
         [Resolved(canBeNull: true)]
         private IDialogOverlay dialogOverlay { get; set; }
 
-        [Resolved(canBeNull: true)]
-        private VersionManager versionManager { get; set; }
-
         protected override BackgroundScreen CreateBackground() => new BackgroundScreenDefault();
 
         protected override bool PlayExitSound => false;
@@ -294,16 +291,6 @@ namespace osu.Game.Screens.Menu
             }
         }
 
-        protected override void Update()
-        {
-            base.Update();
-
-            bottomElementsFlow.Margin = new MarginPadding
-            {
-                Bottom = (versionManager?.DrawHeight + 5) ?? 0
-            };
-        }
-
         protected override void LogoSuspending(OsuLogo logo)
         {
             var seq = logo.FadeOut(300, Easing.InSine)

osu.Game/Screens/Menu/MenuTip.cs

@@ -7,12 +7,14 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Localisation;
 using osu.Framework.Utils;
 using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osuTK;
 using osuTK.Graphics;
+using osu.Game.Localisation;
 
 namespace osu.Game.Screens.Menu
 {
@@ -78,49 +80,49 @@ namespace osu.Game.Screens.Menu
             static void formatRegular(SpriteText t) => t.Font = OsuFont.GetFont(size: 16, weight: FontWeight.Regular);
             static void formatSemiBold(SpriteText t) => t.Font = OsuFont.GetFont(size: 16, weight: FontWeight.SemiBold);
 
-            string tip = getRandomTip();
+            var tip = getRandomTip();
 
             textFlow.Clear();
-            textFlow.AddParagraph("a tip for you:", formatSemiBold);
+            textFlow.AddParagraph(MenuTipStrings.MenuTipTitle, formatSemiBold);
             textFlow.AddParagraph(tip, formatRegular);
 
             this.FadeInFromZero(200, Easing.OutQuint)
-                .Delay(1000 + 80 * tip.Length)
+                .Delay(1000 + 80 * tip.ToString().Length)
                 .Then()
                 .FadeOutFromOne(2000, Easing.OutQuint);
         }
 
-        private string getRandomTip()
+        private LocalisableString getRandomTip()
         {
-            string[] tips =
+            LocalisableString[] tips =
             {
-                "Press Ctrl-T anywhere in the game to toggle the toolbar!",
+                MenuTipStrings.ToggleToolbarShortcut,
-                "Press Ctrl-O anywhere in the game to access options!",
+                MenuTipStrings.GameSettingsShortcut,
-                "All settings are dynamic and take effect in real-time. Try changing the skin while watching autoplay!",
+                MenuTipStrings.DynamicSettings,
-                "New features are coming online every update. Make sure to stay up-to-date!",
+                MenuTipStrings.NewFeaturesAreComingOnline,
-                "If you find the UI too large or small, try adjusting UI scale in settings!",
+                MenuTipStrings.UIScalingSettings,
-                "Try adjusting the \"Screen Scaling\" mode to change your gameplay or UI area, even in fullscreen!",
+                MenuTipStrings.ScreenScalingSettings,
-                "What used to be \"osu!direct\" is available to all users just like on the website. You can access it anywhere using Ctrl-B!",
+                MenuTipStrings.FreeOsuDirect,
-                "Seeking in replays is available by dragging on the progress bar at the bottom of the screen or by using the left and right arrow keys!",
+                MenuTipStrings.ReplaySeeking,
-                "Multithreading support means that even with low \"FPS\" your input and judgements will be accurate!",
+                MenuTipStrings.MultithreadingSupport,
-                "Try scrolling right in mod select to find a bunch of new fun mods!",
+                MenuTipStrings.TryNewMods,
-                "Most of the web content (profiles, rankings, etc.) are available natively in-game from the icons on the toolbar!",
+                MenuTipStrings.EmbeddedWebContent,
-                "Get more details, hide or delete a beatmap by right-clicking on its panel at song select!",
+                MenuTipStrings.BeatmapRightClick,
-                "All delete operations are temporary until exiting. Restore accidentally deleted content from the maintenance settings!",
+                MenuTipStrings.TemporaryDeleteOperations,
-                "Check out the \"playlists\" system, which lets users create their own custom and permanent leaderboards!",
+                MenuTipStrings.DiscoverPlaylists,
-                "Toggle advanced frame / thread statistics with Ctrl-F11!",
+                MenuTipStrings.ToggleAdvancedFPSCounter,
-                "Take a look under the hood at performance counters and enable verbose performance logging with Ctrl-F2!",
+                MenuTipStrings.GlobalStatisticsShortcut,
-                "You can pause during a replay by pressing Space!",
+                MenuTipStrings.ReplayPausing,
-                "Most of the hotkeys in the game are configurable and can be changed to anything you want. Check the bindings panel under input settings!",
+                MenuTipStrings.ConfigurableHotkeys,
-                "When your gameplay HUD is hidden, you can press and hold Ctrl to view it temporarily!",
+                MenuTipStrings.PeekHUDWhenHidden,
-                "Your gameplay HUD can be customized by using the skin layout editor. Open it at any time via Ctrl-Shift-S!",
+                MenuTipStrings.SkinEditor,
-                "Drag and drop any image into the skin editor to load it in quickly!",
+                MenuTipStrings.DragAndDropImageInSkinEditor,
-                "You can create mod presets to make toggling your favorite mod combinations easier!",
+                MenuTipStrings.ModPresets,
-                "Many mods have customisation settings that drastically change how they function. Click the Mod Customisation button in mod select to view settings!",
+                MenuTipStrings.ModCustomisationSettings,
-                "Press Ctrl-Shift-R to switch to a random skin!",
+                MenuTipStrings.RandomSkinShortcut,
-                "While watching a replay, press Ctrl-H to toggle replay settings!",
+                MenuTipStrings.ToggleReplaySettingsShortcut,
-                "You can easily copy the mods from scores on a leaderboard by right-clicking on them!",
+                MenuTipStrings.CopyModsFromScore,
-                "Ctrl-Enter at song select will start a beatmap in autoplay mode!"
+                MenuTipStrings.AutoplayBeatmapShortcut
             };
 
             return tips[RNG.Next(0, tips.Length)];

osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallenge.cs

@@ -345,7 +345,7 @@ namespace osu.Game.Screens.OnlinePlay.DailyChallenge
         private void presentScore(long id)
         {
             if (this.IsCurrentScreen())
-                this.Push(new PlaylistItemScoreResultsScreen(room.RoomID!.Value, playlistItem, id));
+                this.Push(new PlaylistItemScoreResultsScreen(id, room.RoomID!.Value, playlistItem));
         }
 
         private void onRoomScoreSet(MultiplayerRoomScoreSetEvent e)

osu.Game/Screens/OnlinePlay/Lounge/DrawableLoungeRoom.cs

@@ -1,6 +1,7 @@
 // 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;
 using System.Collections.Generic;
 using System.ComponentModel;
 using osu.Framework.Allocation;
@@ -22,9 +23,14 @@ using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
 using osu.Game.Online.Rooms;
+using osu.Game.Online.Rooms.RoomStatuses;
+using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
+using osu.Game.Screens.OnlinePlay.Playlists;
 using osuTK;
 using osuTK.Graphics;
 using Container = osu.Framework.Graphics.Containers.Container;
@@ -48,6 +54,12 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
         [Resolved(canBeNull: true)]
         private LoungeSubScreen? lounge { get; set; }
 
+        [Resolved]
+        private IDialogOverlay? dialogOverlay { get; set; }
+
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
         private readonly BindableWithCurrent<Room?> selectedRoom = new BindableWithCurrent<Room?>();
         private Sample? sampleSelect;
         private Sample? sampleJoin;
@@ -144,13 +156,34 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
 
         public Popover GetPopover() => new PasswordEntryPopover(Room);
 
-        public MenuItem[] ContextMenuItems => new MenuItem[]
+        public MenuItem[] ContextMenuItems
         {
-            new OsuMenuItem("Create copy", MenuItemType.Standard, () =>
+            get
             {
-                lounge?.OpenCopy(Room);
+                var items = new List<MenuItem>
-            })
+                {
-        };
+                    new OsuMenuItem("Create copy", MenuItemType.Standard, () =>
+                    {
+                        lounge?.OpenCopy(Room);
+                    })
+                };
+
+                if (Room.Type == MatchType.Playlists && Room.Host?.Id == api.LocalUser.Value.Id && Room.StartDate?.AddMinutes(5) >= DateTimeOffset.Now && Room.Status is not RoomStatusEnded)
+                {
+                    items.Add(new OsuMenuItem("Close playlist", MenuItemType.Destructive, () =>
+                    {
+                        dialogOverlay?.Push(new ClosePlaylistDialog(Room, () =>
+                        {
+                            var request = new ClosePlaylistRequest(Room.RoomID!.Value);
+                            request.Success += () => lounge?.RefreshRooms();
+                            api.Queue(request);
+                        }));
+                    }));
+                }
+
+                return items.ToArray();
+            }
+        }
 
         public bool OnPressed(KeyBindingPressEvent<GlobalAction> e)
         {

osu.Game/Screens/OnlinePlay/Lounge/LoungeSubScreen.cs

@@ -379,6 +379,8 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
             this.Push(CreateRoomSubScreen(room));
         }
 
+        public void RefreshRooms() => ListingPollingComponent.PollImmediately();
+
         private void updateLoadingLayer()
         {
             if (operationInProgress.Value || !ListingPollingComponent.InitialRoomsReceived.Value)

osu.Game/Screens/OnlinePlay/Match/RoomSubScreen.cs

@@ -71,7 +71,7 @@ namespace osu.Game.Screens.OnlinePlay.Match
         protected RulesetStore Rulesets { get; private set; } = null!;
 
         [Resolved]
-        private IAPIProvider api { get; set; } = null!;
+        protected IAPIProvider API { get; private set; } = null!;
 
         [Resolved(canBeNull: true)]
         protected OnlinePlayScreen? ParentScreen { get; private set; }
@@ -80,7 +80,7 @@ namespace osu.Game.Screens.OnlinePlay.Match
         private PreviewTrackManager previewTrackManager { get; set; } = null!;
 
         [Resolved(canBeNull: true)]
-        private IDialogOverlay? dialogOverlay { get; set; }
+        protected IDialogOverlay? DialogOverlay { get; private set; }
 
         [Cached]
         private readonly OnlinePlayBeatmapAvailabilityTracker beatmapAvailabilityTracker = new OnlinePlayBeatmapAvailabilityTracker();
@@ -282,7 +282,7 @@ namespace osu.Game.Screens.OnlinePlay.Match
             }
         }
 
-        protected virtual bool IsConnected => api.State.Value == APIState.Online;
+        protected virtual bool IsConnected => API.State.Value == APIState.Online;
 
         public override bool OnBackButton()
         {
@@ -361,17 +361,17 @@ namespace osu.Game.Screens.OnlinePlay.Match
 
             bool hasUnsavedChanges = Room.RoomID == null && Room.Playlist.Count > 0;
 
-            if (dialogOverlay == null || !hasUnsavedChanges)
+            if (DialogOverlay == null || !hasUnsavedChanges)
                 return true;
 
             // if the dialog is already displayed, block exiting until the user explicitly makes a decision.
-            if (dialogOverlay.CurrentDialog is ConfirmDiscardChangesDialog discardChangesDialog)
+            if (DialogOverlay.CurrentDialog is ConfirmDiscardChangesDialog discardChangesDialog)
             {
                 discardChangesDialog.Flash();
                 return false;
             }
 
-            dialogOverlay.Push(new ConfirmDiscardChangesDialog(() =>
+            DialogOverlay.Push(new ConfirmDiscardChangesDialog(() =>
             {
                 ExitConfirmed = true;
                 settingsOverlay.Hide();

osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerResultsScreen.cs

@@ -7,7 +7,7 @@ using osu.Game.Screens.OnlinePlay.Playlists;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
-    public partial class MultiplayerResultsScreen : PlaylistItemUserResultsScreen
+    public partial class MultiplayerResultsScreen : PlaylistItemScoreResultsScreen
     {
         public MultiplayerResultsScreen(ScoreInfo score, long roomId, PlaylistItem playlistItem)
             : base(score, roomId, playlistItem)

osu.Game/Screens/OnlinePlay/Playlists/ClosePlaylistDialog.cs

@@ -0,0 +1,19 @@
+// 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;
+using osu.Game.Online.Rooms;
+using osu.Game.Overlays.Dialog;
+
+namespace osu.Game.Screens.OnlinePlay.Playlists
+{
+    public partial class ClosePlaylistDialog : DeletionDialog
+    {
+        public ClosePlaylistDialog(Room room, Action closeAction)
+        {
+            HeaderText = "Are you sure you want to close the following playlist:";
+            BodyText = room.Name;
+            DangerousAction = closeAction;
+        }
+    }
+}

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemResultsScreen.cs

@@ -191,8 +191,8 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
         {
             var scoreInfos = scores.Select(s => s.CreateScoreInfo(ScoreManager, Rulesets, PlaylistItem, Beatmap.Value.BeatmapInfo)).OrderByTotalScore().ToArray();
 
-            // Invoke callback to add the scores.
+            // Invoke callback to add the scores. Exclude the score provided to this screen since it's added already.
-            callback.Invoke(scoreInfos);
+            callback.Invoke(scoreInfos.Where(s => s.OnlineID != Score?.OnlineID));
 
             return scoreInfos;
         }

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemScoreResultsScreen.cs

@@ -11,13 +11,19 @@ using osu.Game.Scoring;
 namespace osu.Game.Screens.OnlinePlay.Playlists
 {
     /// <summary>
-    /// Shows a selected arbitrary score for a playlist item, with scores around included.
+    /// Shows a given score in a playlist item, with scores around included.
     /// </summary>
     public partial class PlaylistItemScoreResultsScreen : PlaylistItemResultsScreen
     {
         private readonly long scoreId;
 
-        public PlaylistItemScoreResultsScreen(long roomId, PlaylistItem playlistItem, long scoreId)
+        public PlaylistItemScoreResultsScreen(ScoreInfo score, long roomId, PlaylistItem playlistItem)
+            : base(score, roomId, playlistItem)
+        {
+            scoreId = score.OnlineID;
+        }
+
+        public PlaylistItemScoreResultsScreen(long scoreId, long roomId, PlaylistItem playlistItem)
             : base(null, roomId, playlistItem)
         {
             this.scoreId = scoreId;
@@ -28,9 +34,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
         protected override ScoreInfo[] PerformSuccessCallback(Action<IEnumerable<ScoreInfo>> callback, List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
         {
             var scoreInfos = base.PerformSuccessCallback(callback, scores, pivot);
-
+            Schedule(() => SelectedScore.Value ??= scoreInfos.SingleOrDefault(s => s.OnlineID == scoreId));
-            Schedule(() => SelectedScore.Value ??= scoreInfos.SingleOrDefault(score => score.OnlineID == scoreId));
-
             return scoreInfos;
         }
     }

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemUserBestResultsScreen.cs

@@ -0,0 +1,41 @@
+// 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;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Game.Online.API;
+using osu.Game.Online.Rooms;
+using osu.Game.Scoring;
+
+namespace osu.Game.Screens.OnlinePlay.Playlists
+{
+    /// <summary>
+    /// Shows a user's best score in a playlist item, with scores around included.
+    /// </summary>
+    public partial class PlaylistItemUserBestResultsScreen : PlaylistItemResultsScreen
+    {
+        private readonly int userId;
+
+        public PlaylistItemUserBestResultsScreen(long roomId, PlaylistItem playlistItem, int userId)
+            : base(null, roomId, playlistItem)
+        {
+            this.userId = userId;
+        }
+
+        protected override APIRequest<MultiplayerScore> CreateScoreRequest() => new ShowPlaylistUserScoreRequest(RoomId, PlaylistItem.ID, userId);
+
+        protected override ScoreInfo[] PerformSuccessCallback(Action<IEnumerable<ScoreInfo>> callback, List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
+        {
+            var scoreInfos = base.PerformSuccessCallback(callback, scores, pivot);
+
+            Schedule(() =>
+            {
+                // Prefer selecting the local user's score, or otherwise default to the first visible score.
+                SelectedScore.Value ??= scoreInfos.FirstOrDefault(s => s.UserID == userId) ?? scoreInfos.FirstOrDefault();
+            });
+
+            return scoreInfos;
+        }
+    }
+}

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemUserResultsScreen.cs

@@ -1,46 +0,0 @@
-// 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;
-using System.Collections.Generic;
-using System.Linq;
-using osu.Game.Online.API;
-using osu.Game.Online.Rooms;
-using osu.Game.Scoring;
-
-namespace osu.Game.Screens.OnlinePlay.Playlists
-{
-    /// <summary>
-    /// Shows the user's best score for a given playlist item, with scores around included.
-    /// </summary>
-    public partial class PlaylistItemUserResultsScreen : PlaylistItemResultsScreen
-    {
-        public PlaylistItemUserResultsScreen(ScoreInfo? score, long roomId, PlaylistItem playlistItem)
-            : base(score, roomId, playlistItem)
-        {
-        }
-
-        protected override APIRequest<MultiplayerScore> CreateScoreRequest() => new ShowPlaylistUserScoreRequest(RoomId, PlaylistItem.ID, API.LocalUser.Value.Id);
-
-        protected override ScoreInfo[] PerformSuccessCallback(Action<IEnumerable<ScoreInfo>> callback, List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
-        {
-            var scoreInfos = scores.Select(s => s.CreateScoreInfo(ScoreManager, Rulesets, PlaylistItem, Beatmap.Value.BeatmapInfo)).OrderByTotalScore().ToArray();
-
-            // Select a score if we don't already have one selected.
-            // Note: This is done before the callback so that the panel list centres on the selected score before panels are added (eliminating initial scroll).
-            if (SelectedScore.Value == null)
-            {
-                Schedule(() =>
-                {
-                    // Prefer selecting the local user's score, or otherwise default to the first visible score.
-                    SelectedScore.Value = scoreInfos.FirstOrDefault(s => s.User.OnlineID == API.LocalUser.Value.Id) ?? scoreInfos.FirstOrDefault();
-                });
-            }
-
-            // Invoke callback to add the scores. Exclude the user's current score which was added previously.
-            callback.Invoke(scoreInfos.Where(s => s.OnlineID != Score?.OnlineID));
-
-            return scoreInfos;
-        }
-    }
-}

osu.Game/Screens/OnlinePlay/Playlists/PlaylistsPlayer.cs

@@ -56,7 +56,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
         protected override ResultsScreen CreateResults(ScoreInfo score)
         {
             Debug.Assert(Room.RoomID != null);
-            return new PlaylistItemUserResultsScreen(score, Room.RoomID.Value, PlaylistItem)
+            return new PlaylistItemScoreResultsScreen(score, Room.RoomID.Value, PlaylistItem)
             {
                 AllowRetry = true,
                 ShowUserStatistics = true,

osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomFooter.cs

@@ -2,9 +2,14 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.ComponentModel;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
+using osu.Game.Online.Rooms.RoomStatuses;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
@@ -12,22 +17,104 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
     public partial class PlaylistsRoomFooter : CompositeDrawable
     {
         public Action? OnStart;
+        public Action? OnClose;
+
+        private readonly Room room;
+        private DangerousRoundedButton closeButton = null!;
+
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
 
         public PlaylistsRoomFooter(Room room)
+        {
+            this.room = room;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
         {
             RelativeSizeAxes = Axes.Both;
 
-            InternalChildren = new[]
+            InternalChild = new FillFlowContainer
             {
-                new PlaylistsReadyButton(room)
+                AutoSizeAxes = Axes.X,
+                RelativeSizeAxes = Axes.Y,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Direction = FillDirection.Horizontal,
+                Spacing = new Vector2(10),
+                Children = new Drawable[]
                 {
-                    Anchor = Anchor.Centre,
+                    new PlaylistsReadyButton(room)
-                    Origin = Anchor.Centre,
+                    {
-                    RelativeSizeAxes = Axes.Y,
+                        Anchor = Anchor.Centre,
-                    Size = new Vector2(600, 1),
+                        Origin = Anchor.Centre,
-                    Action = () => OnStart?.Invoke()
+                        RelativeSizeAxes = Axes.Y,
+                        Size = new Vector2(600, 1),
+                        Action = () => OnStart?.Invoke()
+                    },
+                    closeButton = new DangerousRoundedButton
+                    {
+                        Text = "Close",
+                        Action = () => OnClose?.Invoke(),
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Size = new Vector2(120, 1),
+                        Alpha = 0,
+                        RelativeSizeAxes = Axes.Y,
+                    }
                 }
             };
         }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            room.PropertyChanged += onRoomChanged;
+            updateState();
+        }
+
+        private void hideCloseButton()
+        {
+            closeButton.ResizeWidthTo(0, 100, Easing.OutQuint)
+                       .Then().FadeOut().Expire();
+        }
+
+        private void onRoomChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            switch (e.PropertyName)
+            {
+                case nameof(Room.Status):
+                case nameof(Room.Host):
+                case nameof(Room.StartDate):
+                    updateState();
+                    break;
+            }
+        }
+
+        private void updateState()
+        {
+            TimeSpan? deletionGracePeriodRemaining = room.StartDate?.AddMinutes(5) - DateTimeOffset.Now;
+
+            if (room.Host?.Id == api.LocalUser.Value.Id)
+            {
+                if (deletionGracePeriodRemaining > TimeSpan.Zero && room.Status is not RoomStatusEnded)
+                {
+                    closeButton.FadeIn();
+                    using (BeginDelayedSequence(deletionGracePeriodRemaining.Value.TotalMilliseconds))
+                        hideCloseButton();
+                }
+                else if (closeButton.Alpha > 0)
+                    hideCloseButton();
+            }
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            room.PropertyChanged -= onRoomChanged;
+        }
     }
 }

osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSubScreen.cs

@@ -1,6 +1,7 @@
 // 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;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Linq;
@@ -12,7 +13,10 @@ using osu.Framework.Logging;
 using osu.Framework.Screens;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Input;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
 using osu.Game.Online.Rooms;
+using osu.Game.Online.Rooms.RoomStatuses;
 using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Match;
 using osu.Game.Screens.OnlinePlay.Match.Components;
@@ -32,6 +36,9 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
 
         private readonly IBindable<bool> isIdle = new BindableBool();
 
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
         [Resolved(CanBeNull = true)]
         private IdleTracker? idleTracker { get; set; }
 
@@ -143,7 +150,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
                                             RequestResults = item =>
                                             {
                                                 Debug.Assert(Room.RoomID != null);
-                                                ParentScreen?.Push(new PlaylistItemUserResultsScreen(null, Room.RoomID.Value, item));
+                                                ParentScreen?.Push(new PlaylistItemUserBestResultsScreen(Room.RoomID.Value, item, api.LocalUser.Value.Id));
                                             }
                                         }
                                     },
@@ -255,7 +262,8 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
 
         protected override Drawable CreateFooter() => new PlaylistsRoomFooter(Room)
         {
-            OnStart = StartPlay
+            OnStart = StartPlay,
+            OnClose = closePlaylist,
         };
 
         protected override RoomSettingsOverlay CreateRoomSettingsOverlay(Room room) => new PlaylistsRoomSettingsOverlay(room)
@@ -273,6 +281,20 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
             Logger.Log($"Polling adjusted (selection: {selectionPollingComponent.TimeBetweenPolls.Value})");
         }
 
+        private void closePlaylist()
+        {
+            DialogOverlay?.Push(new ClosePlaylistDialog(Room, () =>
+            {
+                var request = new ClosePlaylistRequest(Room.RoomID!.Value);
+                request.Success += () =>
+                {
+                    Room.Status = new RoomStatusEnded();
+                    Room.EndDate = DateTimeOffset.UtcNow;
+                };
+                API.Queue(request);
+            }));
+        }
+
         protected override Screen CreateGameplayScreen(PlaylistItem selectedItem)
         {
             return new PlayerLoader(() => new PlaylistsPlayer(Room, selectedItem)

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

@@ -28,6 +28,8 @@ namespace osu.Game.Screens.Play.HUD
         private const float alpha_when_invalid = 0.3f;
         private readonly Bindable<bool> valid = new Bindable<bool>();
 
+        private HitEventExtensions.UnstableRateCalculationResult? unstableRateResult;
+
         [Resolved]
         private ScoreProcessor scoreProcessor { get; set; } = null!;
 
@@ -44,9 +46,6 @@ namespace osu.Game.Screens.Play.HUD
                 DrawableCount.FadeTo(e.NewValue ? 1 : alpha_when_invalid, 1000, Easing.OutQuint));
         }
 
-        private bool changesUnstableRate(JudgementResult judgement)
-            => !(judgement.HitObject.HitWindows is HitWindows.EmptyHitWindows) && judgement.IsHit;
-
         protected override void LoadComplete()
         {
             base.LoadComplete();
@@ -56,13 +55,20 @@ namespace osu.Game.Screens.Play.HUD
             updateDisplay();
         }
 
-        private void updateDisplay(JudgementResult _) => Scheduler.AddOnce(updateDisplay);
+        private void updateDisplay(JudgementResult result)
+        {
+            if (HitEventExtensions.AffectsUnstableRate(result.HitObject, result.Type))
+                Scheduler.AddOnce(updateDisplay);
+        }
 
         private void updateDisplay()
         {
-            double? unstableRate = scoreProcessor.HitEvents.CalculateUnstableRate();
+            unstableRateResult = scoreProcessor.HitEvents.CalculateUnstableRate(unstableRateResult);
+
+            double? unstableRate = unstableRateResult?.Result;
 
             valid.Value = unstableRate != null;
+
             if (unstableRate != null)
                 Current.Value = (int)Math.Round(unstableRate.Value);
         }

osu.Game/Screens/Play/KiaiGameplayFountains.cs

@@ -5,8 +5,10 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
+using osu.Game.Configuration;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Screens.Menu;
@@ -18,9 +20,13 @@ namespace osu.Game.Screens.Play
         private StarFountain leftFountain = null!;
         private StarFountain rightFountain = null!;
 
+        private Bindable<bool> kiaiStarFountains = null!;
+
         [BackgroundDependencyLoader]
-        private void load()
+        private void load(OsuConfigManager config)
         {
+            kiaiStarFountains = config.GetBindable<bool>(OsuSetting.StarFountains);
+
             RelativeSizeAxes = Axes.Both;
 
             Children = new[]
@@ -48,6 +54,9 @@ namespace osu.Game.Screens.Play
         {
             base.OnNewBeat(beatIndex, timingPoint, effectPoint, amplitudes);
 
+            if (!kiaiStarFountains.Value)
+                return;
+
             if (effectPoint.KiaiMode && !isTriggered)
             {
                 bool isNearEffectPoint = Math.Abs(BeatSyncSource.Clock.CurrentTime - effectPoint.Time) < 500;

osu.Game/Screens/Play/PlayerLoader.cs

@@ -28,6 +28,7 @@ using osu.Game.Localisation;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Performance;
+using osu.Game.Scoring;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play.PlayerSettings;
 using osu.Game.Skinning;
@@ -78,6 +79,8 @@ namespace osu.Game.Screens.Play
         private FillFlowContainer disclaimers = null!;
         private OsuScrollContainer settingsScroll = null!;
 
+        private Bindable<ScoreInfo?> lastScore = null!;
+
         private Bindable<bool> showStoryboards = null!;
 
         private bool backgroundBrightnessReduction;
@@ -179,6 +182,8 @@ namespace osu.Game.Screens.Play
         {
             muteWarningShownOnce = sessionStatics.GetBindable<bool>(Static.MutedAudioNotificationShownOnce);
             batteryWarningShownOnce = sessionStatics.GetBindable<bool>(Static.LowBatteryNotificationShownOnce);
+            lastScore = sessionStatics.GetBindable<ScoreInfo?>(Static.LastLocalUserScore);
+
             showStoryboards = config.GetBindable<bool>(OsuSetting.ShowStoryboard);
 
             const float padding = 25;
@@ -347,6 +352,8 @@ namespace osu.Game.Screens.Play
             highPerformanceSession?.Dispose();
             highPerformanceSession = null;
 
+            lastScore.Value = null;
+
             return base.OnExiting(e);
         }
 

osu.Game/Screens/Play/SaveFailedScoreButton.cs

@@ -32,7 +32,7 @@ namespace osu.Game.Screens.Play
 
         private readonly Func<Task<ScoreInfo>>? importFailedScore;
 
-        private ScoreInfo? importedScore;
+        private Live<ScoreInfo>? importedScore;
 
         private DownloadButton button = null!;
 
@@ -55,7 +55,7 @@ namespace osu.Game.Screens.Play
                     switch (state.Value)
                     {
                         case DownloadState.LocallyAvailable:
-                            game?.PresentScore(importedScore, ScorePresentType.Gameplay);
+                            game?.PresentScore(importedScore?.Value, ScorePresentType.Gameplay);
                             break;
 
                         case DownloadState.NotDownloaded:
@@ -65,7 +65,7 @@ namespace osu.Game.Screens.Play
                             {
                                 Task.Run(importFailedScore).ContinueWith(t =>
                                 {
-                                    importedScore = realm.Run(r => r.Find<ScoreInfo>(t.GetResultSafely().ID)?.Detach());
+                                    importedScore = realm.Run<Live<ScoreInfo>?>(r => r.Find<ScoreInfo>(t.GetResultSafely().ID)?.ToLive(realm));
                                     Schedule(() => state.Value = importedScore != null ? DownloadState.LocallyAvailable : DownloadState.NotDownloaded);
                                 }).FireAndForget();
                             }
@@ -77,7 +77,7 @@ namespace osu.Game.Screens.Play
 
             if (player != null)
             {
-                importedScore = realm.Run(r => r.Find<ScoreInfo>(player.Score.ScoreInfo.ID)?.Detach());
+                importedScore = realm.Run(r => r.Find<ScoreInfo>(player.Score.ScoreInfo.ID)?.ToLive(realm));
                 state.Value = importedScore != null ? DownloadState.LocallyAvailable : DownloadState.NotDownloaded;
             }
 
@@ -137,7 +137,7 @@ namespace osu.Game.Screens.Play
         {
             if (state.NewValue != DownloadState.LocallyAvailable) return;
 
-            if (importedScore != null) scoreManager.Export(importedScore);
+            if (importedScore != null) scoreManager.Export(importedScore.Value);
 
             this.state.ValueChanged -= exportWhenReady;
         }

osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs

@@ -58,7 +58,7 @@ namespace osu.Game.Screens.Ranking.Statistics
         /// <param name="hitEvents">The <see cref="HitEvent"/>s to display the timing distribution of.</param>
         public HitEventTimingDistributionGraph(IReadOnlyList<HitEvent> hitEvents)
         {
-            this.hitEvents = hitEvents.Where(e => !(e.HitObject.HitWindows is HitWindows.EmptyHitWindows) && e.Result.IsBasic() && e.Result.IsHit()).ToList();
+            this.hitEvents = hitEvents.Where(e => e.HitObject.HitWindows != HitWindows.Empty && e.Result.IsBasic() && e.Result.IsHit()).ToList();
             bins = Enumerable.Range(0, total_timing_distribution_bins).Select(_ => new Dictionary<HitResult, int>()).ToArray<IDictionary<HitResult, int>>();
         }
 

osu.Game/Screens/Ranking/Statistics/UnstableRate.cs

@@ -15,10 +15,10 @@ namespace osu.Game.Screens.Ranking.Statistics
         /// Creates and computes an <see cref="UnstableRate"/> statistic.
         /// </summary>
         /// <param name="hitEvents">Sequence of <see cref="HitEvent"/>s to calculate the unstable rate based on.</param>
-        public UnstableRate(IEnumerable<HitEvent> hitEvents)
+        public UnstableRate(IReadOnlyList<HitEvent> hitEvents)
             : base("Unstable Rate")
         {
-            Value = hitEvents.CalculateUnstableRate();
+            Value = hitEvents.CalculateUnstableRate()?.Result;
         }
 
         protected override string DisplayValue(double? value) => value == null ? "(not available)" : value.Value.ToString(@"N2");

osu.Game/Screens/Ranking/Statistics/User/OverallRanking.cs

@@ -14,7 +14,7 @@ namespace osu.Game.Screens.Ranking.Statistics.User
     {
         private const float transition_duration = 300;
 
-        public Bindable<UserStatisticsUpdate?> StatisticsUpdate { get; } = new Bindable<UserStatisticsUpdate?>();
+        public Bindable<ScoreBasedUserStatisticsUpdate?> StatisticsUpdate { get; } = new Bindable<ScoreBasedUserStatisticsUpdate?>();
 
         private LoadingLayer loadingLayer = null!;
         private GridContainer content = null!;
@@ -86,7 +86,7 @@ namespace osu.Game.Screens.Ranking.Statistics.User
             FinishTransforms(true);
         }
 
-        private void onUpdateReceived(ValueChangedEvent<UserStatisticsUpdate?> update)
+        private void onUpdateReceived(ValueChangedEvent<ScoreBasedUserStatisticsUpdate?> update)
         {
             if (update.NewValue == null)
             {

osu.Game/Screens/Ranking/Statistics/User/RankingChangeRow.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Screens.Ranking.Statistics.User
 {
     public abstract partial class RankingChangeRow<T> : CompositeDrawable
     {
-        public Bindable<UserStatisticsUpdate?> StatisticsUpdate { get; } = new Bindable<UserStatisticsUpdate?>();
+        public Bindable<ScoreBasedUserStatisticsUpdate?> StatisticsUpdate { get; } = new Bindable<ScoreBasedUserStatisticsUpdate?>();
 
         private readonly Func<UserStatistics, T> accessor;
 
@@ -113,7 +113,7 @@ namespace osu.Game.Screens.Ranking.Statistics.User
             StatisticsUpdate.BindValueChanged(onStatisticsUpdate, true);
         }
 
-        private void onStatisticsUpdate(ValueChangedEvent<UserStatisticsUpdate?> statisticsUpdate)
+        private void onStatisticsUpdate(ValueChangedEvent<ScoreBasedUserStatisticsUpdate?> statisticsUpdate)
         {
             var update = statisticsUpdate.NewValue;
 

osu.Game/Screens/Ranking/Statistics/UserStatisticsPanel.cs

@@ -18,9 +18,9 @@ namespace osu.Game.Screens.Ranking.Statistics
     {
         private readonly ScoreInfo achievedScore;
 
-        internal readonly Bindable<UserStatisticsUpdate?> DisplayedUserStatisticsUpdate = new Bindable<UserStatisticsUpdate?>();
+        internal readonly Bindable<ScoreBasedUserStatisticsUpdate?> DisplayedUserStatisticsUpdate = new Bindable<ScoreBasedUserStatisticsUpdate?>();
 
-        private IBindable<UserStatisticsUpdate?> latestGlobalStatisticsUpdate = null!;
+        private IBindable<ScoreBasedUserStatisticsUpdate?> latestGlobalStatisticsUpdate = null!;
 
         public UserStatisticsPanel(ScoreInfo achievedScore)
         {

osu.Game/Screens/Select/BeatmapCarousel.cs

@@ -29,7 +29,6 @@ using osu.Game.Input.Bindings;
 using osu.Game.Screens.Select.Carousel;
 using osuTK;
 using osuTK.Input;
-using Realms;
 
 namespace osu.Game.Screens.Select
 {
@@ -207,8 +206,6 @@ namespace osu.Game.Screens.Select
 
         private CarouselRoot root;
 
-        private IDisposable? subscriptionBeatmaps;
-
         private readonly DrawablePool<DrawableCarouselBeatmapSet> setPool = new DrawablePool<DrawableCarouselBeatmapSet>(100);
 
         private Sample? spinSample;
@@ -258,13 +255,6 @@ namespace osu.Game.Screens.Select
             }
         }
 
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            subscriptionBeatmaps = realm.RegisterForNotifications(r => r.All<BeatmapInfo>().Where(b => !b.Hidden), beatmapsChanged);
-        }
-
         private readonly HashSet<BeatmapSetInfo> setsRequiringUpdate = new HashSet<BeatmapSetInfo>();
         private readonly HashSet<BeatmapSetInfo> setsRequiringRemoval = new HashSet<BeatmapSetInfo>();
 
@@ -366,35 +356,6 @@ namespace osu.Game.Screens.Select
             BeatmapSetInfo? fetchFromID(Guid id) => realm.Realm.Find<BeatmapSetInfo>(id);
         }
 
-        private void beatmapsChanged(IRealmCollection<BeatmapInfo> sender, ChangeSet? changes)
-        {
-            // we only care about actual changes in hidden status.
-            if (changes == null)
-                return;
-
-            bool changed = false;
-
-            foreach (int i in changes.InsertedIndices)
-            {
-                var beatmapInfo = sender[i];
-                var beatmapSet = beatmapInfo.BeatmapSet;
-
-                Debug.Assert(beatmapSet != null);
-
-                // Only require to action here if the beatmap is missing.
-                // This avoids processing these events unnecessarily when new beatmaps are imported, for example.
-                if (root.BeatmapSetsByID.TryGetValue(beatmapSet.ID, out var existingSets)
-                    && existingSets.SelectMany(s => s.Beatmaps).All(b => b.BeatmapInfo.ID != beatmapInfo.ID))
-                {
-                    updateBeatmapSet(beatmapSet.Detach());
-                    changed = true;
-                }
-            }
-
-            if (changed)
-                invalidateAfterChange();
-        }
-
         public void RemoveBeatmapSet(BeatmapSetInfo beatmapSet) => Schedule(() =>
         {
             removeBeatmapSet(beatmapSet.ID);
@@ -1292,12 +1253,5 @@ namespace osu.Game.Screens.Select
                 return ScrollableExtent * ((scrollbarPosition - top_padding) / (ScrollbarMovementExtent - (top_padding + bottom_padding)));
             }
         }
-
-        protected override void Dispose(bool isDisposing)
-        {
-            base.Dispose(isDisposing);
-
-            subscriptionBeatmaps?.Dispose();
-        }
     }
 }

osu.Game/Skinning/SkinnableSprite.cs

@@ -1,8 +1,8 @@
 // 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;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -14,6 +14,7 @@ using osu.Game.Configuration;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Overlays.Settings;
+using osu.Game.Utils;
 using osuTK;
 
 namespace osu.Game.Skinning
@@ -93,10 +94,10 @@ namespace osu.Game.Skinning
                 // but that requires further thought.
                 var highestPrioritySkin = getHighestPriorityUserSkin(((SkinnableSprite)SettingSourceObject).source.AllSources) as Skin;
 
-                string[]? availableFiles = highestPrioritySkin?.SkinInfo.PerformRead(s => s.Files
+                string[]? availableFiles = highestPrioritySkin?.SkinInfo.PerformRead(
-                                                                                           .Where(f => f.Filename.EndsWith(".png", StringComparison.Ordinal)
+                    s => s.Files
-                                                                                                       || f.Filename.EndsWith(".jpg", StringComparison.Ordinal))
+                          .Where(f => SupportedExtensions.IMAGE_EXTENSIONS.Contains(Path.GetExtension(f.Filename).ToLowerInvariant()))
-                                                                                           .Select(f => f.Filename).Distinct()).ToArray();
+                          .Select(f => f.Filename).Distinct()).ToArray();
 
                 if (availableFiles?.Length > 0)
                     Items = availableFiles;

osu.Game/Storyboards/Storyboard.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Storyboards.Drawables;
+using osu.Game.Utils;
 
 namespace osu.Game.Storyboards
 {
@@ -96,8 +97,6 @@ namespace osu.Game.Storyboards
         public virtual DrawableStoryboard CreateDrawable(IReadOnlyList<Mod>? mods = null) =>
             new DrawableStoryboard(this, mods);
 
-        private static readonly string[] image_extensions = { @".png", @".jpg" };
-
         public virtual string? GetStoragePathFromStoryboardPath(string path)
         {
             string? resolvedPath = null;
@@ -109,7 +108,7 @@ namespace osu.Game.Storyboards
             else
             {
                 // Some old storyboards don't include a file extension, so let's best guess at one.
-                foreach (string ext in image_extensions)
+                foreach (string ext in SupportedExtensions.IMAGE_EXTENSIONS)
                 {
                     if ((resolvedPath = BeatmapInfo.BeatmapSet?.GetPathForFile($"{path}{ext}")) != null)
                         break;

osu.Game/Tests/Visual/Spectator/TestSpectatorClient.cs

@@ -78,12 +78,12 @@ namespace osu.Game.Tests.Visual.Spectator
         /// <param name="state">The spectator state to end play with.</param>
         public void SendEndPlay(int userId, SpectatedUserState state = SpectatedUserState.Quit)
         {
-            if (!userBeatmapDictionary.ContainsKey(userId))
+            if (!userBeatmapDictionary.TryGetValue(userId, out int value))
                 return;
 
             ((ISpectatorClient)this).UserFinishedPlaying(userId, new SpectatorState
             {
-                BeatmapID = userBeatmapDictionary[userId],
+                BeatmapID = value,
                 RulesetID = 0,
                 Mods = userModsDictionary[userId],
                 State = state

osu.Game/Users/UserActivity.cs

@@ -41,6 +41,12 @@ namespace osu.Game.Users
 
         public virtual Color4 GetAppropriateColour(OsuColour colours) => colours.GreenDarker;
 
+        /// <summary>
+        /// Returns the ID of the beatmap involved in this activity, if applicable and/or available.
+        /// </summary>
+        /// <param name="hideIdentifiableInformation"></param>
+        public virtual int? GetBeatmapID(bool hideIdentifiableInformation = false) => null;
+
         [MessagePackObject]
         public class ChoosingBeatmap : UserActivity
         {
@@ -76,6 +82,7 @@ namespace osu.Game.Users
 
             public override string GetStatus(bool hideIdentifiableInformation = false) => RulesetPlayingVerb;
             public override string GetDetails(bool hideIdentifiableInformation = false) => BeatmapDisplayTitle;
+            public override int? GetBeatmapID(bool hideIdentifiableInformation = false) => BeatmapID;
         }
 
         [MessagePackObject]
@@ -156,6 +163,11 @@ namespace osu.Game.Users
                 // For now let's assume that showing the beatmap a user is editing could reveal unwanted information.
                 ? string.Empty
                 : BeatmapDisplayTitle;
+
+            public override int? GetBeatmapID(bool hideIdentifiableInformation = false) => hideIdentifiableInformation
+                // For now let's assume that showing the beatmap a user is editing could reveal unwanted information.
+                ? null
+                : BeatmapID;
         }
 
         [MessagePackObject]

osu.Game/Users/UserRankPanel.cs

@@ -4,13 +4,16 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.LocalisationExtensions;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
-using osu.Game.Online.API;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Resources.Localisation.Web;
+using osu.Game.Rulesets;
 using osuTK;
 
 namespace osu.Game.Users
@@ -24,13 +27,9 @@ namespace osu.Game.Users
         private const int padding = 10;
         private const int main_content_height = 80;
 
-        [Resolved]
-        private IAPIProvider api { get; set; } = null!;
-
         private ProfileValueDisplay globalRankDisplay = null!;
         private ProfileValueDisplay countryRankDisplay = null!;
-
+        private LoadingLayer loadingLayer = null!;
-        private readonly IBindable<UserStatistics?> statistics = new Bindable<UserStatistics?>();
 
         public UserRankPanel(APIUser user)
             : base(user)
@@ -43,13 +42,37 @@ namespace osu.Game.Users
         private void load()
         {
             BorderColour = ColourProvider?.Light1 ?? Colours.GreyVioletLighter;
+        }
 
-            statistics.BindTo(api.Statistics);
+        [Resolved]
-            statistics.BindValueChanged(stats =>
+        private LocalUserStatisticsProvider? statisticsProvider { get; set; }
-            {
+
-                globalRankDisplay.Content = stats.NewValue?.GlobalRank?.ToLocalisableString("\\##,##0") ?? "-";
+        [Resolved]
-                countryRankDisplay.Content = stats.NewValue?.CountryRank?.ToLocalisableString("\\##,##0") ?? "-";
+        private IBindable<RulesetInfo> ruleset { get; set; } = null!;
-            }, true);
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            if (statisticsProvider != null)
+                statisticsProvider.StatisticsUpdated += onStatisticsUpdated;
+
+            ruleset.BindValueChanged(_ => updateDisplay(), true);
+        }
+
+        private void onStatisticsUpdated(UserStatisticsUpdate update)
+        {
+            if (update.Ruleset.Equals(ruleset.Value))
+                updateDisplay();
+        }
+
+        private void updateDisplay()
+        {
+            var statistics = statisticsProvider?.GetStatisticsFor(ruleset.Value);
+
+            loadingLayer.State.Value = statistics == null ? Visibility.Visible : Visibility.Hidden;
+            globalRankDisplay.Content = statistics?.GlobalRank?.ToLocalisableString("\\##,##0") ?? "-";
+            countryRankDisplay.Content = statistics?.CountryRank?.ToLocalisableString("\\##,##0") ?? "-";
         }
 
         protected override Drawable CreateLayout()
@@ -176,7 +199,8 @@ namespace osu.Game.Users
                                 }
                             }
                         }
-                    }
+                    },
+                    loadingLayer = new LoadingLayer(true),
                 }
             };
 
@@ -205,5 +229,13 @@ namespace osu.Game.Users
         }
 
         protected override Drawable? CreateBackground() => null;
+
+        protected override void Dispose(bool isDisposing)
+        {
+            if (statisticsProvider.IsNotNull())
+                statisticsProvider.StatisticsUpdated -= onStatisticsUpdated;
+
+            base.Dispose(isDisposing);
+        }
     }
 }

osu.Game/Utils/SupportedExtensions.cs

@@ -0,0 +1,19 @@
+// 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.
+
+namespace osu.Game.Utils
+{
+    public static class SupportedExtensions
+    {
+        public static readonly string[] VIDEO_EXTENSIONS = [@".mp4", @".mov", @".avi", @".flv", @".mpg", @".wmv", @".m4v"];
+        public static readonly string[] AUDIO_EXTENSIONS = [@".mp3", @".ogg", @".wav"];
+        public static readonly string[] IMAGE_EXTENSIONS = [@".jpg", @".jpeg", @".png"];
+
+        public static readonly string[] ALL_EXTENSIONS =
+        [
+            ..VIDEO_EXTENSIONS,
+            ..AUDIO_EXTENSIONS,
+            ..IMAGE_EXTENSIONS
+        ];
+    }
+}

osu.Game/osu.Game.csproj

@@ -35,7 +35,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Realm" Version="11.5.0" />
-    <PackageReference Include="ppy.osu.Framework" Version="2024.1118.0" />
+    <PackageReference Include="ppy.osu.Framework" Version="2024.1128.0" />
     <PackageReference Include="ppy.osu.Game.Resources" Version="2024.1106.0" />
     <PackageReference Include="Sentry" Version="4.13.0" />
     <!-- Held back due to 0.34.0 failing AOT compilation on ZstdSharp.dll dependency. -->

osu.iOS.props

@@ -17,6 +17,6 @@
     <MtouchInterpreter>-all</MtouchInterpreter>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.iOS" Version="2024.1118.0" />
+    <PackageReference Include="ppy.osu.Framework.iOS" Version="2024.1128.0" />
   </ItemGroup>
 </Project>