Merge branch 'master' into cursor-trail-middle

osu.Android.props

@@ -52,7 +52,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="ppy.osu.Game.Resources" Version="2021.813.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.813.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.818.0" />
   </ItemGroup>
   <ItemGroup Label="Transitive Dependencies">
     <!-- Realm needs to be directly referenced in all Xamarin projects, as it will not pull in its transitive dependencies otherwise. -->

osu.Desktop/Windows/GameplayWinKeyBlocker.cs

@@ -5,23 +5,23 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
-using osu.Game;
 using osu.Game.Configuration;
+using osu.Game.Screens.Play;
 
 namespace osu.Desktop.Windows
 {
     public class GameplayWinKeyBlocker : Component
     {
         private Bindable<bool> disableWinKey;
-        private Bindable<bool> localUserPlaying;
+        private IBindable<bool> localUserPlaying;
 
         [Resolved]
         private GameHost host { get; set; }
 
         [BackgroundDependencyLoader]
-        private void load(OsuGame game, OsuConfigManager config)
+        private void load(ILocalUserPlayInfo localUserInfo, OsuConfigManager config)
         {
-            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying = localUserInfo.IsPlaying.GetBoundCopy();
             localUserPlaying.BindValueChanged(_ => updateBlocking());
 
             disableWinKey = config.GetBindable<bool>(OsuSetting.GameplayDisableWinKey);

osu.Game.Benchmarks/BenchmarkMod.cs

@@ -0,0 +1,34 @@
+// 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 BenchmarkDotNet.Attributes;
+using osu.Game.Rulesets.Osu.Mods;
+
+namespace osu.Game.Benchmarks
+{
+    public class BenchmarkMod : BenchmarkTest
+    {
+        private OsuModDoubleTime mod;
+
+        [Params(1, 10, 100)]
+        public int Times { get; set; }
+
+        [GlobalSetup]
+        public void GlobalSetup()
+        {
+            mod = new OsuModDoubleTime();
+        }
+
+        [Benchmark]
+        public int ModHashCode()
+        {
+            var hashCode = new HashCode();
+
+            for (int i = 0; i < Times; i++)
+                hashCode.Add(mod);
+
+            return hashCode.ToHashCode();
+        }
+    }
+}

osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs

@@ -9,7 +9,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Catch.Difficulty.Skills
 {
-    public class Movement : StrainSkill
+    public class Movement : StrainDecaySkill
     {
         private const float absolute_player_positioning_error = 16f;
         private const float normalized_hitobject_radius = 41.0f;

osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs

@@ -10,7 +10,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Mania.Difficulty.Skills
 {
-    public class Strain : StrainSkill
+    public class Strain : StrainDecaySkill
     {
         private const double individual_decay_base = 0.125;
         private const double overall_decay_base = 0.30;
@@ -71,7 +71,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty.Skills
             return individualStrain + overallStrain - CurrentStrain;
         }
 
-        protected override double GetPeakStrain(double offset)
+        protected override double CalculateInitialStrain(double offset)
             => applyDecay(individualStrain, offset - Previous[0].StartTime, individual_decay_base)
                + applyDecay(overallStrain, offset - Previous[0].StartTime, overall_decay_base);
 

osu.Game.Rulesets.Osu/Difficulty/Skills/OsuStrainSkill.cs

@@ -10,7 +10,7 @@ using osu.Framework.Utils;
 
 namespace osu.Game.Rulesets.Osu.Difficulty.Skills
 {
-    public abstract class OsuStrainSkill : StrainSkill
+    public abstract class OsuStrainSkill : StrainDecaySkill
     {
         /// <summary>
         /// The number of sections with the highest strains, which the peak strain reductions will apply to.

osu.Game.Rulesets.Osu/Edit/DrawableOsuEditorRuleset.cs

@@ -63,6 +63,8 @@ namespace osu.Game.Rulesets.Osu.Edit
                     return;
 
                 if (hitObject is DrawableHitCircle circle)
+                {
+                    using (circle.BeginAbsoluteSequence(circle.HitStateUpdateTime))
                     {
                         circle.ApproachCircle
                               .FadeOutFromOne(EDITOR_HIT_OBJECT_FADE_OUT_EXTENSION * 4)
@@ -70,6 +72,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 
                         circle.ApproachCircle.ScaleTo(1.1f, 300, Easing.OutQuint);
                     }
+                }
 
                 if (hitObject is IHasMainCirclePiece mainPieceContainer)
                 {

osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs

@@ -14,7 +14,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills
     /// <summary>
     /// Calculates the colour coefficient of taiko difficulty.
     /// </summary>
-    public class Colour : StrainSkill
+    public class Colour : StrainDecaySkill
     {
         protected override double SkillMultiplier => 1;
         protected override double StrainDecayBase => 0.4;

osu.Game.Rulesets.Taiko/Difficulty/Skills/Rhythm.cs

@@ -14,7 +14,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills
     /// <summary>
     /// Calculates the rhythm coefficient of taiko difficulty.
     /// </summary>
-    public class Rhythm : StrainSkill
+    public class Rhythm : StrainDecaySkill
     {
         protected override double SkillMultiplier => 10;
         protected override double StrainDecayBase => 0;

osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs

@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills
     /// <remarks>
     /// The reference play style chosen uses two hands, with full alternating (the hand changes after every hit).
     /// </remarks>
-    public class Stamina : StrainSkill
+    public class Stamina : StrainDecaySkill
     {
         protected override double SkillMultiplier => 1;
         protected override double StrainDecayBase => 0.4;

osu.Game.Tests/Beatmaps/BeatmapDifficultyCacheTest.cs

@@ -1,56 +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 NUnit.Framework;
-using osu.Game.Beatmaps;
-using osu.Game.Rulesets;
-using osu.Game.Rulesets.Mods;
-using osu.Game.Rulesets.Osu.Mods;
-
-namespace osu.Game.Tests.Beatmaps
-{
-    [TestFixture]
-    public class BeatmapDifficultyCacheTest
-    {
-        [Test]
-        public void TestKeyEqualsWithDifferentModInstances()
-        {
-            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
-            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
-
-            Assert.That(key1, Is.EqualTo(key2));
-        }
-
-        [Test]
-        public void TestKeyEqualsWithDifferentModOrder()
-        {
-            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
-            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHidden(), new OsuModHardRock() });
-
-            Assert.That(key1, Is.EqualTo(key2));
-        }
-
-        [TestCase(1.3, DifficultyRating.Easy)]
-        [TestCase(1.993, DifficultyRating.Easy)]
-        [TestCase(1.998, DifficultyRating.Normal)]
-        [TestCase(2.4, DifficultyRating.Normal)]
-        [TestCase(2.693, DifficultyRating.Normal)]
-        [TestCase(2.698, DifficultyRating.Hard)]
-        [TestCase(3.5, DifficultyRating.Hard)]
-        [TestCase(3.993, DifficultyRating.Hard)]
-        [TestCase(3.997, DifficultyRating.Insane)]
-        [TestCase(5.0, DifficultyRating.Insane)]
-        [TestCase(5.292, DifficultyRating.Insane)]
-        [TestCase(5.297, DifficultyRating.Expert)]
-        [TestCase(6.2, DifficultyRating.Expert)]
-        [TestCase(6.493, DifficultyRating.Expert)]
-        [TestCase(6.498, DifficultyRating.ExpertPlus)]
-        [TestCase(8.3, DifficultyRating.ExpertPlus)]
-        public void TestDifficultyRatingMapping(double starRating, DifficultyRating expectedBracket)
-        {
-            var actualBracket = BeatmapDifficultyCache.GetDifficultyRating(starRating);
-
-            Assert.AreEqual(expectedBracket, actualBracket);
-        }
-    }
-}

osu.Game.Tests/Beatmaps/TestSceneBeatmapDifficultyCache.cs

@@ -0,0 +1,146 @@
+// 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.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Tests.Beatmaps.IO;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Tests.Beatmaps
+{
+    [HeadlessTest]
+    public class TestSceneBeatmapDifficultyCache : OsuTestScene
+    {
+        public const double BASE_STARS = 5.55;
+
+        private BeatmapSetInfo importedSet;
+
+        [Resolved]
+        private BeatmapManager beatmaps { get; set; }
+
+        private TestBeatmapDifficultyCache difficultyCache;
+
+        private IBindable<StarDifficulty?> starDifficultyBindable;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGameBase osu)
+        {
+            importedSet = ImportBeatmapTest.LoadQuickOszIntoOsu(osu).Result;
+        }
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("setup difficulty cache", () =>
+            {
+                SelectedMods.Value = Array.Empty<Mod>();
+
+                Child = difficultyCache = new TestBeatmapDifficultyCache();
+
+                starDifficultyBindable = difficultyCache.GetBindableDifficulty(importedSet.Beatmaps.First());
+            });
+
+            AddUntilStep($"star difficulty -> {BASE_STARS}", () => starDifficultyBindable.Value?.Stars == BASE_STARS);
+        }
+
+        [Test]
+        public void TestStarDifficultyChangesOnModSettings()
+        {
+            OsuModDoubleTime dt = null;
+
+            AddStep("change selected mod to DT", () => SelectedMods.Value = new[] { dt = new OsuModDoubleTime { SpeedChange = { Value = 1.5 } } });
+            AddUntilStep($"star difficulty -> {BASE_STARS + 1.5}", () => starDifficultyBindable.Value?.Stars == BASE_STARS + 1.5);
+
+            AddStep("change DT speed to 1.25", () => dt.SpeedChange.Value = 1.25);
+            AddUntilStep($"star difficulty -> {BASE_STARS + 1.25}", () => starDifficultyBindable.Value?.Stars == BASE_STARS + 1.25);
+
+            AddStep("change selected mod to NC", () => SelectedMods.Value = new[] { new OsuModNightcore { SpeedChange = { Value = 1.75 } } });
+            AddUntilStep($"star difficulty -> {BASE_STARS + 1.75}", () => starDifficultyBindable.Value?.Stars == BASE_STARS + 1.75);
+        }
+
+        [Test]
+        public void TestKeyEqualsWithDifferentModInstances()
+        {
+            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
+            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
+
+            Assert.That(key1, Is.EqualTo(key2));
+            Assert.That(key1.GetHashCode(), Is.EqualTo(key2.GetHashCode()));
+        }
+
+        [Test]
+        public void TestKeyEqualsWithDifferentModOrder()
+        {
+            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHardRock(), new OsuModHidden() });
+            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModHidden(), new OsuModHardRock() });
+
+            Assert.That(key1, Is.EqualTo(key2));
+            Assert.That(key1.GetHashCode(), Is.EqualTo(key2.GetHashCode()));
+        }
+
+        [Test]
+        public void TestKeyDoesntEqualWithDifferentModSettings()
+        {
+            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModDoubleTime { SpeedChange = { Value = 1.1 } } });
+            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModDoubleTime { SpeedChange = { Value = 1.9 } } });
+
+            Assert.That(key1, Is.Not.EqualTo(key2));
+            Assert.That(key1.GetHashCode(), Is.Not.EqualTo(key2.GetHashCode()));
+        }
+
+        [Test]
+        public void TestKeyEqualWithMatchingModSettings()
+        {
+            var key1 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModDoubleTime { SpeedChange = { Value = 1.25 } } });
+            var key2 = new BeatmapDifficultyCache.DifficultyCacheLookup(new BeatmapInfo { ID = 1234 }, new RulesetInfo { ID = 0 }, new Mod[] { new OsuModDoubleTime { SpeedChange = { Value = 1.25 } } });
+
+            Assert.That(key1, Is.EqualTo(key2));
+            Assert.That(key1.GetHashCode(), Is.EqualTo(key2.GetHashCode()));
+        }
+
+        [TestCase(1.3, DifficultyRating.Easy)]
+        [TestCase(1.993, DifficultyRating.Easy)]
+        [TestCase(1.998, DifficultyRating.Normal)]
+        [TestCase(2.4, DifficultyRating.Normal)]
+        [TestCase(2.693, DifficultyRating.Normal)]
+        [TestCase(2.698, DifficultyRating.Hard)]
+        [TestCase(3.5, DifficultyRating.Hard)]
+        [TestCase(3.993, DifficultyRating.Hard)]
+        [TestCase(3.997, DifficultyRating.Insane)]
+        [TestCase(5.0, DifficultyRating.Insane)]
+        [TestCase(5.292, DifficultyRating.Insane)]
+        [TestCase(5.297, DifficultyRating.Expert)]
+        [TestCase(6.2, DifficultyRating.Expert)]
+        [TestCase(6.493, DifficultyRating.Expert)]
+        [TestCase(6.498, DifficultyRating.ExpertPlus)]
+        [TestCase(8.3, DifficultyRating.ExpertPlus)]
+        public void TestDifficultyRatingMapping(double starRating, DifficultyRating expectedBracket)
+        {
+            var actualBracket = BeatmapDifficultyCache.GetDifficultyRating(starRating);
+
+            Assert.AreEqual(expectedBracket, actualBracket);
+        }
+
+        private class TestBeatmapDifficultyCache : BeatmapDifficultyCache
+        {
+            protected override Task<StarDifficulty> ComputeValueAsync(DifficultyCacheLookup lookup, CancellationToken token = default)
+            {
+                var rateAdjust = lookup.OrderedMods.OfType<ModRateAdjust>().SingleOrDefault();
+                if (rateAdjust != null)
+                    return Task.FromResult(new StarDifficulty(BASE_STARS + rateAdjust.SpeedChange.Value, 0));
+
+                return Task.FromResult(new StarDifficulty(BASE_STARS, 0));
+            }
+        }
+    }
+}

osu.Game.Tests/Skins/IO/ImportSkinTest.cs

@@ -50,10 +50,10 @@ namespace osu.Game.Tests.Skins.IO
                     var imported2 = await loadSkinIntoOsu(osu, new ZipArchiveReader(createOsk("test skin", "skinner"), "skin2.osk"));
 
                     Assert.That(imported2.ID, Is.Not.EqualTo(imported.ID));
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().Count, Is.EqualTo(1));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).Count, Is.EqualTo(1));
 
                     // the first should be overwritten by the second import.
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().First().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).First().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
                 }
                 finally
                 {
@@ -76,10 +76,10 @@ namespace osu.Game.Tests.Skins.IO
                     var imported2 = await loadSkinIntoOsu(osu, new ZipArchiveReader(createOsk(string.Empty, string.Empty), "download.osk"));
 
                     Assert.That(imported2.ID, Is.Not.EqualTo(imported.ID));
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().Count, Is.EqualTo(2));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).Count, Is.EqualTo(2));
 
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().First().Files.First().FileInfoID, Is.EqualTo(imported.Files.First().FileInfoID));
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().Last().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).First().Files.First().FileInfoID, Is.EqualTo(imported.Files.First().FileInfoID));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).Last().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
                 }
                 finally
                 {
@@ -101,10 +101,10 @@ namespace osu.Game.Tests.Skins.IO
                     var imported2 = await loadSkinIntoOsu(osu, new ZipArchiveReader(createOsk("test skin v2.1", "skinner"), "skin2.osk"));
 
                     Assert.That(imported2.ID, Is.Not.EqualTo(imported.ID));
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().Count, Is.EqualTo(2));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).Count, Is.EqualTo(2));
 
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().First().Files.First().FileInfoID, Is.EqualTo(imported.Files.First().FileInfoID));
-                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins().Last().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).First().Files.First().FileInfoID, Is.EqualTo(imported.Files.First().FileInfoID));
+                    Assert.That(osu.Dependencies.Get<SkinManager>().GetAllUserSkins(true).Last().Files.First().FileInfoID, Is.EqualTo(imported2.Files.First().FileInfoID));
                 }
                 finally
                 {

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

@@ -78,6 +78,24 @@ namespace osu.Game.Tests.Visual.Editing
             AddAssert("clock looped to start", () => Clock.IsRunning && Clock.CurrentTime < 500);
         }
 
+        [Test]
+        public void TestClampWhenSeekOutsideBeatmapBounds()
+        {
+            AddStep("stop clock", Clock.Stop);
+
+            AddStep("seek before start time", () => Clock.Seek(-1000));
+            AddAssert("time is clamped to 0", () => Clock.CurrentTime == 0);
+
+            AddStep("seek beyond track length", () => Clock.Seek(Clock.TrackLength + 1000));
+            AddAssert("time is clamped to track length", () => Clock.CurrentTime == Clock.TrackLength);
+
+            AddStep("seek smoothly before start time", () => Clock.SeekSmoothlyTo(-1000));
+            AddAssert("time is clamped to 0", () => Clock.CurrentTime == 0);
+
+            AddStep("seek smoothly beyond track length", () => Clock.SeekSmoothlyTo(Clock.TrackLength + 1000));
+            AddAssert("time is clamped to track length", () => Clock.CurrentTime == Clock.TrackLength);
+        }
+
         protected override void Dispose(bool isDisposing)
         {
             Beatmap.Disabled = false;

osu.Game.Tests/Visual/Gameplay/TestSceneHUDOverlay.cs

@@ -19,6 +19,8 @@ namespace osu.Game.Tests.Visual.Gameplay
 {
     public class TestSceneHUDOverlay : OsuManualInputManagerTestScene
     {
+        private OsuConfigManager localConfig;
+
         private HUDOverlay hudOverlay;
 
         [Cached]
@@ -31,8 +33,14 @@ namespace osu.Game.Tests.Visual.Gameplay
         private Drawable hideTarget => hudOverlay.KeyCounter;
         private FillFlowContainer<KeyCounter> keyCounterFlow => hudOverlay.KeyCounter.ChildrenOfType<FillFlowContainer<KeyCounter>>().First();
 
-        [Resolved]
-        private OsuConfigManager config { get; set; }
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Dependencies.Cache(localConfig = new OsuConfigManager(LocalStorage));
+        }
+
+        [SetUp]
+        public void SetUp() => Schedule(() => localConfig.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Always));
 
         [Test]
         public void TestComboCounterIncrementing()
@@ -85,11 +93,7 @@ namespace osu.Game.Tests.Visual.Gameplay
         {
             createNew();
 
-            HUDVisibilityMode originalConfigValue = HUDVisibilityMode.HideDuringGameplay;
-
-            AddStep("get original config value", () => originalConfigValue = config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
-
-            AddStep("set hud to never show", () => config.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Never));
+            AddStep("set hud to never show", () => localConfig.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Never));
 
             AddUntilStep("wait for fade", () => !hideTarget.IsPresent);
 
@@ -98,37 +102,28 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddStep("stop trigering", () => InputManager.ReleaseKey(Key.ControlLeft));
             AddUntilStep("wait for fade", () => !hideTarget.IsPresent);
-
-            AddStep("set original config value", () => config.SetValue(OsuSetting.HUDVisibilityMode, originalConfigValue));
         }
 
         [Test]
         public void TestExternalHideDoesntAffectConfig()
         {
-            HUDVisibilityMode originalConfigValue = HUDVisibilityMode.HideDuringGameplay;
-
             createNew();
 
-            AddStep("get original config value", () => originalConfigValue = config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
-
             AddStep("set showhud false", () => hudOverlay.ShowHud.Value = false);
-            AddAssert("config unchanged", () => originalConfigValue == config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
+            AddAssert("config unchanged", () => localConfig.GetBindable<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode).IsDefault);
 
             AddStep("set showhud true", () => hudOverlay.ShowHud.Value = true);
-            AddAssert("config unchanged", () => originalConfigValue == config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
+            AddAssert("config unchanged", () => localConfig.GetBindable<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode).IsDefault);
         }
 
         [Test]
         public void TestChangeHUDVisibilityOnHiddenKeyCounter()
         {
-            bool keyCounterVisibleValue = false;
-
             createNew();
-            AddStep("save keycounter visible value", () => keyCounterVisibleValue = config.Get<bool>(OsuSetting.KeyOverlay));
 
-            AddStep("set keycounter visible false", () =>
+            AddStep("hide key overlay", () =>
             {
-                config.SetValue(OsuSetting.KeyOverlay, false);
+                localConfig.SetValue(OsuSetting.KeyOverlay, false);
                 hudOverlay.KeyCounter.AlwaysVisible.Value = false;
             });
 
@@ -139,24 +134,16 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddStep("set showhud true", () => hudOverlay.ShowHud.Value = true);
             AddUntilStep("hidetarget is visible", () => hideTarget.IsPresent);
             AddAssert("key counters still hidden", () => !keyCounterFlow.IsPresent);
-
-            AddStep("return value", () => config.SetValue(OsuSetting.KeyOverlay, keyCounterVisibleValue));
         }
 
         [Test]
         public void TestHiddenHUDDoesntBlockSkinnableComponentsLoad()
         {
-            HUDVisibilityMode originalConfigValue = default;
-
-            AddStep("get original config value", () => originalConfigValue = config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
-
-            AddStep("set hud to never show", () => config.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Never));
+            AddStep("set hud to never show", () => localConfig.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Never));
 
             createNew();
             AddUntilStep("wait for hud load", () => hudOverlay.IsLoaded);
             AddUntilStep("skinnable components loaded", () => hudOverlay.ChildrenOfType<SkinnableTargetContainer>().Single().ComponentsLoaded);
-
-            AddStep("set original config value", () => config.SetValue(OsuSetting.HUDVisibilityMode, originalConfigValue));
         }
 
         private void createNew(Action<HUDOverlay> action = null)
@@ -175,5 +162,11 @@ namespace osu.Game.Tests.Visual.Gameplay
                 Child = hudOverlay;
             });
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            localConfig?.Dispose();
+            base.Dispose(isDisposing);
+        }
     }
 }

osu.Game.Tests/Visual/Gameplay/TestSceneOverlayActivation.cs

@@ -3,7 +3,6 @@
 
 using System.Linq;
 using NUnit.Framework;
-using osu.Framework.Bindables;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
 
@@ -66,7 +65,6 @@ namespace osu.Game.Tests.Visual.Gameplay
         protected class OverlayTestPlayer : TestPlayer
         {
             public new OverlayActivation OverlayActivationMode => base.OverlayActivationMode.Value;
-            public new Bindable<bool> LocalUserPlaying => base.LocalUserPlaying;
         }
     }
 }

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

@@ -10,11 +10,11 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
-using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Rooms;
 using osu.Game.Online.Rooms.RoomStatuses;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Users;
@@ -108,12 +108,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
                             EndDate = { Value = DateTimeOffset.Now },
                         }),
                         createDrawableRoom(new Room
-                        {
-                            Name = { Value = "Room 4 (realtime)" },
-                            Status = { Value = new RoomStatusOpen() },
-                            Category = { Value = RoomCategory.Realtime },
-                        }),
-                        createDrawableRoom(new Room
                         {
                             Name = { Value = "Room 4 (spotlight)" },
                             Status = { Value = new RoomStatusOpen() },
@@ -134,7 +128,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
             {
                 Name = { Value = "Room with password" },
                 Status = { Value = new RoomStatusOpen() },
-                Category = { Value = RoomCategory.Realtime },
+                Type = { Value = MatchType.HeadToHead },
             }));
 
             AddAssert("password icon hidden", () => Precision.AlmostEquals(0, drawableRoom.ChildrenOfType<DrawableRoom.PasswordProtectedIcon>().Single().Alpha));
@@ -159,10 +153,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 }));
             }
 
-            var drawableRoom = new DrawableRoom(room) { MatchingFilter = true };
-            drawableRoom.Action = () => drawableRoom.State = drawableRoom.State == SelectionState.Selected ? SelectionState.NotSelected : SelectionState.Selected;
-
-            return drawableRoom;
+            return new DrawableLoungeRoom(room) { MatchingFilter = true };
         }
     }
 }

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

@@ -0,0 +1,131 @@
+// 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.Linq;
+using Moq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Testing;
+using osu.Game.Screens.OnlinePlay.Multiplayer;
+using osu.Game.Screens.Play;
+using osuTK.Input;
+
+namespace osu.Game.Tests.Visual.Multiplayer
+{
+    public class TestSceneGameplayChatDisplay : MultiplayerTestScene
+    {
+        private GameplayChatDisplay chatDisplay;
+
+        [Cached(typeof(ILocalUserPlayInfo))]
+        private ILocalUserPlayInfo localUserInfo;
+
+        private readonly Bindable<bool> localUserPlaying = new Bindable<bool>();
+
+        private TextBox textBox => chatDisplay.ChildrenOfType<TextBox>().First();
+
+        public TestSceneGameplayChatDisplay()
+        {
+            var mockLocalUserInfo = new Mock<ILocalUserPlayInfo>();
+            mockLocalUserInfo.SetupGet(i => i.IsPlaying).Returns(localUserPlaying);
+
+            localUserInfo = mockLocalUserInfo.Object;
+        }
+
+        [SetUpSteps]
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            AddStep("load chat display", () => Child = chatDisplay = new GameplayChatDisplay
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Width = 0.5f,
+            });
+
+            AddStep("expand", () => chatDisplay.Expanded.Value = true);
+        }
+
+        [Test]
+        public void TestCantClickWhenPlaying()
+        {
+            setLocalUserPlaying(true);
+
+            AddStep("attempt focus chat", () =>
+            {
+                InputManager.MoveMouseTo(textBox);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            assertChatFocused(false);
+        }
+
+        [Test]
+        public void TestFocusDroppedWhenPlaying()
+        {
+            assertChatFocused(false);
+
+            AddStep("focus chat", () =>
+            {
+                InputManager.MoveMouseTo(textBox);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            setLocalUserPlaying(true);
+            assertChatFocused(false);
+
+            // should still stay non-focused even after entering a new break section.
+            setLocalUserPlaying(false);
+            assertChatFocused(false);
+        }
+
+        [Test]
+        public void TestFocusOnTabKeyWhenExpanded()
+        {
+            setLocalUserPlaying(true);
+
+            assertChatFocused(false);
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertChatFocused(true);
+        }
+
+        [Test]
+        public void TestFocusOnTabKeyWhenNotExpanded()
+        {
+            AddStep("set not expanded", () => chatDisplay.Expanded.Value = false);
+            AddUntilStep("is not visible", () => !chatDisplay.IsPresent);
+
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertChatFocused(true);
+            AddUntilStep("is visible", () => chatDisplay.IsPresent);
+
+            AddStep("press enter", () => InputManager.Key(Key.Enter));
+            assertChatFocused(false);
+            AddUntilStep("is not visible", () => !chatDisplay.IsPresent);
+        }
+
+        [Test]
+        public void TestFocusToggleViaAction()
+        {
+            AddStep("set not expanded", () => chatDisplay.Expanded.Value = false);
+            AddUntilStep("is not visible", () => !chatDisplay.IsPresent);
+
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertChatFocused(true);
+            AddUntilStep("is visible", () => chatDisplay.IsPresent);
+
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertChatFocused(false);
+            AddUntilStep("is not visible", () => !chatDisplay.IsPresent);
+        }
+
+        private void assertChatFocused(bool isFocused) =>
+            AddAssert($"chat {(isFocused ? "focused" : "not focused")}", () => textBox.HasFocus == isFocused);
+
+        private void setLocalUserPlaying(bool playing) =>
+            AddStep($"local user {(playing ? "playing" : "not playing")}", () => localUserPlaying.Value = playing);
+    }
+}

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

@@ -9,6 +9,7 @@ using osu.Framework.Testing;
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets.Catch;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Tests.Visual.OnlinePlay;
 using osuTK.Input;
@@ -17,7 +18,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
 {
     public class TestSceneLoungeRoomsContainer : OnlinePlayTestScene
     {
-        protected new BasicTestRoomManager RoomManager => (BasicTestRoomManager)base.RoomManager;
+        protected new TestRequestHandlingRoomManager RoomManager => (TestRequestHandlingRoomManager)base.RoomManager;
 
         private RoomsContainer container;
 
@@ -38,7 +39,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddStep("add rooms", () => RoomManager.AddRooms(3));
 
             AddAssert("has 3 rooms", () => container.Rooms.Count == 3);
-            AddStep("remove first room", () => RoomManager.Rooms.Remove(RoomManager.Rooms.FirstOrDefault()));
+            AddStep("remove first room", () => RoomManager.RemoveRoom(RoomManager.Rooms.FirstOrDefault()));
             AddAssert("has 2 rooms", () => container.Rooms.Count == 2);
             AddAssert("first room removed", () => container.Rooms.All(r => r.Room.RoomID.Value != 0));
 
@@ -74,7 +75,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 var room = RoomManager.Rooms[1];
 
                 RoomManager.RemoveRoom(room);
-                RoomManager.AddRoom(room);
+                RoomManager.AddOrUpdateRoom(room);
             });
 
             AddAssert("no selection", () => checkRoomSelected(null));
@@ -115,11 +116,11 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
             AddUntilStep("4 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 4);
 
-            AddStep("filter one room", () => container.Filter(new FilterCriteria { SearchString = "1" }));
+            AddStep("filter one room", () => container.Filter.Value = new FilterCriteria { SearchString = "1" });
 
             AddUntilStep("1 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 1);
 
-            AddStep("remove filter", () => container.Filter(null));
+            AddStep("remove filter", () => container.Filter.Value = null);
 
             AddUntilStep("4 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 4);
         }
@@ -131,13 +132,13 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddStep("add rooms", () => RoomManager.AddRooms(3, new CatchRuleset().RulesetInfo));
 
             // Todo: What even is this case...?
-            AddStep("set empty filter criteria", () => container.Filter(null));
+            AddStep("set empty filter criteria", () => container.Filter.Value = null);
             AddUntilStep("5 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 5);
 
-            AddStep("filter osu! rooms", () => container.Filter(new FilterCriteria { Ruleset = new OsuRuleset().RulesetInfo }));
+            AddStep("filter osu! rooms", () => container.Filter.Value = new FilterCriteria { Ruleset = new OsuRuleset().RulesetInfo });
             AddUntilStep("2 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 2);
 
-            AddStep("filter catch rooms", () => container.Filter(new FilterCriteria { Ruleset = new CatchRuleset().RulesetInfo }));
+            AddStep("filter catch rooms", () => container.Filter.Value = new FilterCriteria { Ruleset = new CatchRuleset().RulesetInfo });
             AddUntilStep("3 rooms visible", () => container.Rooms.Count(r => r.IsPresent) == 3);
         }
 
@@ -150,6 +151,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
         private bool checkRoomSelected(Room room) => SelectedRoom.Value == room;
 
         private Room getRoomInFlow(int index) =>
-            (container.ChildrenOfType<FillFlowContainer<DrawableRoom>>().First().FlowingChildren.ElementAt(index) as DrawableRoom)?.Room;
+            (container.ChildrenOfType<FillFlowContainer<DrawableLoungeRoom>>().First().FlowingChildren.ElementAt(index) as DrawableRoom)?.Room;
     }
 }

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

@@ -1,55 +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 NUnit.Framework;
-using osu.Game.Beatmaps;
-using osu.Game.Online.Rooms;
-using osu.Game.Rulesets.Osu;
-using osu.Game.Rulesets.Osu.Mods;
-using osu.Game.Screens.OnlinePlay.Match.Components;
-using osu.Game.Tests.Visual.OnlinePlay;
-using osu.Game.Users;
-
-namespace osu.Game.Tests.Visual.Multiplayer
-{
-    public class TestSceneMatchHeader : OnlinePlayTestScene
-    {
-        [SetUp]
-        public new void Setup() => Schedule(() =>
-        {
-            SelectedRoom.Value = new Room
-            {
-                Name = { Value = "A very awesome room" },
-                Host = { Value = new User { Id = 2, Username = "peppy" } },
-                Playlist =
-                {
-                    new PlaylistItem
-                    {
-                        Beatmap =
-                        {
-                            Value = new BeatmapInfo
-                            {
-                                Metadata = new BeatmapMetadata
-                                {
-                                    Title = "Title",
-                                    Artist = "Artist",
-                                    AuthorString = "Author",
-                                },
-                                Version = "Version",
-                                Ruleset = new OsuRuleset().RulesetInfo
-                            }
-                        },
-                        RequiredMods =
-                        {
-                            new OsuModDoubleTime(),
-                            new OsuModNoFail(),
-                            new OsuModRelax(),
-                        }
-                    }
-                }
-            };
-
-            Child = new Header();
-        });
-    }
-}

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

@@ -6,13 +6,17 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Configuration;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.MatchTypes.TeamVersus;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Spectate;
 using osu.Game.Screens.Play;
+using osu.Game.Screens.Play.HUD;
+using osu.Game.Screens.Play.PlayerSettings;
 using osu.Game.Tests.Beatmaps.IO;
 using osu.Game.Users;
 
@@ -23,6 +27,9 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Resolved]
         private OsuGameBase game { get; set; }
 
+        [Resolved]
+        private OsuConfigManager config { get; set; }
+
         [Resolved]
         private BeatmapManager beatmapManager { get; set; }
 
@@ -80,6 +87,32 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddWaitStep("wait a bit", 20);
         }
 
+        [Test]
+        public void TestSpectatorPlayerInteractiveElementsHidden()
+        {
+            HUDVisibilityMode originalConfigValue = default;
+
+            AddStep("get original config hud visibility", () => originalConfigValue = config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
+            AddStep("set config hud visibility to always", () => config.SetValue(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Always));
+
+            start(new[] { PLAYER_1_ID, PLAYER_2_ID });
+            loadSpectateScreen(false);
+
+            AddUntilStep("wait for player loaders", () => this.ChildrenOfType<PlayerLoader>().Count() == 2);
+            AddAssert("all player loader settings hidden", () => this.ChildrenOfType<PlayerLoader>().All(l => !l.ChildrenOfType<FillFlowContainer<PlayerSettingsGroup>>().Any()));
+
+            AddUntilStep("wait for players to load", () => spectatorScreen.AllPlayersLoaded);
+
+            // components wrapped in skinnable target containers load asynchronously, potentially taking more than one frame to load.
+            // therefore use until step rather than direct assert to account for that.
+            AddUntilStep("all interactive elements removed", () => this.ChildrenOfType<Player>().All(p =>
+                !p.ChildrenOfType<PlayerSettingsOverlay>().Any() &&
+                !p.ChildrenOfType<HoldForMenuButton>().Any() &&
+                p.ChildrenOfType<SongProgressBar>().SingleOrDefault()?.ShowHandle == false));
+
+            AddStep("restore config hud visibility", () => config.SetValue(OsuSetting.HUDVisibilityMode, originalConfigValue));
+        }
+
         [Test]
         public void TestTeamDisplay()
         {

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

@@ -44,6 +44,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
         private TestMultiplayer multiplayerScreen;
         private TestMultiplayerClient client;
 
+        private TestRequestHandlingMultiplayerRoomManager roomManager => multiplayerScreen.RoomManager;
+
         [Cached(typeof(UserLookupCache))]
         private UserLookupCache lookupCache = new TestUserLookupCache();
 
@@ -68,7 +70,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
             AddStep("load dependencies", () =>
             {
-                client = new TestMultiplayerClient(multiplayerScreen.RoomManager);
+                client = new TestMultiplayerClient(roomManager);
 
                 // The screen gets suspended so it stops receiving updates.
                 Child = client;
@@ -132,11 +134,9 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Test]
         public void TestExitMidJoin()
         {
-            Room room = null;
-
             AddStep("create room", () =>
             {
-                room = new Room
+                roomManager.AddServerSideRoom(new Room
                 {
                     Name = { Value = "Test Room" },
                     Playlist =
@@ -147,14 +147,16 @@ namespace osu.Game.Tests.Visual.Multiplayer
                             Ruleset = { Value = new OsuRuleset().RulesetInfo },
                         }
                     }
-                };
+                });
             });
 
-            AddStep("refresh rooms", () => multiplayerScreen.RoomManager.Filter.Value = new FilterCriteria());
+            AddStep("refresh rooms", () => this.ChildrenOfType<LoungeSubScreen>().Single().UpdateFilter());
+            AddUntilStep("wait for room", () => this.ChildrenOfType<DrawableRoom>().Any());
+
             AddStep("select room", () => InputManager.Key(Key.Down));
-            AddStep("join room and immediately exit", () =>
+            AddStep("join room and immediately exit select", () =>
             {
-                multiplayerScreen.ChildrenOfType<LoungeSubScreen>().Single().Open(room);
+                InputManager.Key(Key.Enter);
                 Schedule(() => Stack.CurrentScreen.Exit());
             });
         }
@@ -164,7 +166,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
         {
             AddStep("create room", () =>
             {
-                multiplayerScreen.RoomManager.AddRoom(new Room
+                roomManager.AddServerSideRoom(new Room
                 {
                     Name = { Value = "Test Room" },
                     Playlist =
@@ -178,7 +180,9 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 });
             });
 
-            AddStep("refresh rooms", () => multiplayerScreen.RoomManager.Filter.Value = new FilterCriteria());
+            AddStep("refresh rooms", () => this.ChildrenOfType<LoungeSubScreen>().Single().UpdateFilter());
+            AddUntilStep("wait for room", () => this.ChildrenOfType<DrawableRoom>().Any());
+
             AddStep("select room", () => InputManager.Key(Key.Down));
             AddStep("join room", () => InputManager.Key(Key.Enter));
 
@@ -211,7 +215,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
         {
             AddStep("create room", () =>
             {
-                multiplayerScreen.RoomManager.AddRoom(new Room
+                roomManager.AddServerSideRoom(new Room
                 {
                     Name = { Value = "Test Room" },
                     Password = { Value = "password" },
@@ -226,12 +230,14 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 });
             });
 
-            AddStep("refresh rooms", () => multiplayerScreen.RoomManager.Filter.Value = new FilterCriteria());
+            AddStep("refresh rooms", () => this.ChildrenOfType<LoungeSubScreen>().Single().UpdateFilter());
+            AddUntilStep("wait for room", () => this.ChildrenOfType<DrawableRoom>().Any());
+
             AddStep("select room", () => InputManager.Key(Key.Down));
             AddStep("join room", () => InputManager.Key(Key.Enter));
 
-            DrawableRoom.PasswordEntryPopover passwordEntryPopover = null;
-            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
+            DrawableLoungeRoom.PasswordEntryPopover passwordEntryPopover = null;
+            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
             AddStep("enter password in text box", () => passwordEntryPopover.ChildrenOfType<TextBox>().First().Text = "password");
             AddStep("press join room button", () => passwordEntryPopover.ChildrenOfType<OsuButton>().First().TriggerClick());
 

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

@@ -9,7 +9,6 @@ using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Lounge;
-using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Tests.Visual.OnlinePlay;
 using osuTK.Input;
@@ -18,7 +17,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
 {
     public class TestSceneMultiplayerLoungeSubScreen : OnlinePlayTestScene
     {
-        protected new BasicTestRoomManager RoomManager => (BasicTestRoomManager)base.RoomManager;
+        protected new TestRequestHandlingRoomManager RoomManager => (TestRequestHandlingRoomManager)base.RoomManager;
 
         private LoungeSubScreen loungeScreen;
 
@@ -59,20 +58,20 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddStep("select room", () => InputManager.Key(Key.Down));
             AddStep("attempt join room", () => InputManager.Key(Key.Enter));
 
-            AddUntilStep("password prompt appeared", () => InputManager.ChildrenOfType<DrawableRoom.PasswordEntryPopover>().Any());
+            AddUntilStep("password prompt appeared", () => InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().Any());
             AddStep("exit screen", () => Stack.Exit());
-            AddUntilStep("password prompt hidden", () => !InputManager.ChildrenOfType<DrawableRoom.PasswordEntryPopover>().Any());
+            AddUntilStep("password prompt hidden", () => !InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().Any());
         }
 
         [Test]
         public void TestJoinRoomWithPassword()
         {
-            DrawableRoom.PasswordEntryPopover passwordEntryPopover = null;
+            DrawableLoungeRoom.PasswordEntryPopover passwordEntryPopover = null;
 
             AddStep("add room", () => RoomManager.AddRooms(1, withPassword: true));
             AddStep("select room", () => InputManager.Key(Key.Down));
             AddStep("attempt join room", () => InputManager.Key(Key.Enter));
-            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
+            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
             AddStep("enter password in text box", () => passwordEntryPopover.ChildrenOfType<TextBox>().First().Text = "password");
             AddStep("press join room button", () => passwordEntryPopover.ChildrenOfType<OsuButton>().First().TriggerClick());
 
@@ -83,12 +82,12 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Test]
         public void TestJoinRoomWithPasswordViaKeyboardOnly()
         {
-            DrawableRoom.PasswordEntryPopover passwordEntryPopover = null;
+            DrawableLoungeRoom.PasswordEntryPopover passwordEntryPopover = null;
 
             AddStep("add room", () => RoomManager.AddRooms(1, withPassword: true));
             AddStep("select room", () => InputManager.Key(Key.Down));
             AddStep("attempt join room", () => InputManager.Key(Key.Enter));
-            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
+            AddUntilStep("password prompt appeared", () => (passwordEntryPopover = InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().FirstOrDefault()) != null);
             AddStep("enter password in text box", () => passwordEntryPopover.ChildrenOfType<TextBox>().First().Text = "password");
             AddStep("press enter", () => InputManager.Key(Key.Enter));
 

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

@@ -59,23 +59,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddUntilStep("wait for load", () => screen.IsCurrentScreen());
         }
 
-        [Test]
-        public void TestSettingValidity()
-        {
-            AddAssert("create button not enabled", () => !this.ChildrenOfType<MultiplayerMatchSettingsOverlay.CreateOrUpdateButton>().Single().Enabled.Value);
-
-            AddStep("set playlist", () =>
-            {
-                SelectedRoom.Value.Playlist.Add(new PlaylistItem
-                {
-                    Beatmap = { Value = new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo },
-                    Ruleset = { Value = new OsuRuleset().RulesetInfo },
-                });
-            });
-
-            AddAssert("create button enabled", () => this.ChildrenOfType<MultiplayerMatchSettingsOverlay.CreateOrUpdateButton>().Single().Enabled.Value);
-        }
-
         [Test]
         public void TestCreatedRoom()
         {
@@ -97,6 +80,23 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddUntilStep("wait for join", () => Client.Room != null);
         }
 
+        [Test]
+        public void TestSettingValidity()
+        {
+            AddAssert("create button not enabled", () => !this.ChildrenOfType<MultiplayerMatchSettingsOverlay.CreateOrUpdateButton>().Single().Enabled.Value);
+
+            AddStep("set playlist", () =>
+            {
+                SelectedRoom.Value.Playlist.Add(new PlaylistItem
+                {
+                    Beatmap = { Value = new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo },
+                    Ruleset = { Value = new OsuRuleset().RulesetInfo },
+                });
+            });
+
+            AddAssert("create button enabled", () => this.ChildrenOfType<MultiplayerMatchSettingsOverlay.CreateOrUpdateButton>().Single().Enabled.Value);
+        }
+
         [Test]
         public void TestStartMatchWhileSpectating()
         {

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

@@ -0,0 +1,38 @@
+// 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.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.OnlinePlay.Multiplayer;
+
+namespace osu.Game.Tests.Visual.Multiplayer
+{
+    public class TestSceneMultiplayerPlayer : MultiplayerTestScene
+    {
+        private MultiplayerPlayer player;
+
+        [SetUpSteps]
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            AddStep("set beatmap", () =>
+            {
+                Beatmap.Value = CreateWorkingBeatmap(new OsuRuleset().RulesetInfo);
+            });
+
+            AddStep("initialise gameplay", () =>
+            {
+                Stack.Push(player = new MultiplayerPlayer(Client.CurrentMatchPlayingItem.Value, Client.Room?.Users.ToArray()));
+            });
+        }
+
+        [Test]
+        public void TestGameplay()
+        {
+            AddUntilStep("wait for gameplay start", () => player.LocalUserPlaying.Value);
+        }
+    }
+}

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

@@ -1,157 +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 NUnit.Framework;
-using osu.Framework.Testing;
-using osu.Game.Online.Rooms;
-using osu.Game.Screens.OnlinePlay.Components;
-using osu.Game.Tests.Beatmaps;
-using osu.Game.Tests.Visual.OnlinePlay;
-
-namespace osu.Game.Tests.Visual.Multiplayer
-{
-    [HeadlessTest]
-    public class TestSceneMultiplayerRoomManager : MultiplayerTestScene
-    {
-        protected override OnlinePlayTestSceneDependencies CreateOnlinePlayDependencies() => new TestDependencies();
-
-        public TestSceneMultiplayerRoomManager()
-            : base(false)
-        {
-        }
-
-        [Test]
-        public void TestPollsInitially()
-        {
-            AddStep("create room manager with a few rooms", () =>
-            {
-                RoomManager.CreateRoom(createRoom(r => r.Name.Value = "1"));
-                RoomManager.PartRoom();
-                RoomManager.CreateRoom(createRoom(r => r.Name.Value = "2"));
-                RoomManager.PartRoom();
-                RoomManager.ClearRooms();
-            });
-
-            AddAssert("manager polled for rooms", () => ((RoomManager)RoomManager).Rooms.Count == 2);
-            AddAssert("initial rooms received", () => RoomManager.InitialRoomsReceived.Value);
-        }
-
-        [Test]
-        public void TestRoomsClearedOnDisconnection()
-        {
-            AddStep("create room manager with a few rooms", () =>
-            {
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.PartRoom();
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.PartRoom();
-            });
-
-            AddStep("disconnect", () => Client.Disconnect());
-
-            AddAssert("rooms cleared", () => ((RoomManager)RoomManager).Rooms.Count == 0);
-            AddAssert("initial rooms not received", () => !RoomManager.InitialRoomsReceived.Value);
-        }
-
-        [Test]
-        public void TestRoomsPolledOnReconnect()
-        {
-            AddStep("create room manager with a few rooms", () =>
-            {
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.PartRoom();
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.PartRoom();
-            });
-
-            AddStep("disconnect", () => Client.Disconnect());
-            AddStep("connect", () => Client.Connect());
-
-            AddAssert("manager polled for rooms", () => ((RoomManager)RoomManager).Rooms.Count == 2);
-            AddAssert("initial rooms received", () => RoomManager.InitialRoomsReceived.Value);
-        }
-
-        [Test]
-        public void TestRoomsNotPolledWhenJoined()
-        {
-            AddStep("create room manager with a room", () =>
-            {
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.ClearRooms();
-            });
-
-            AddAssert("manager not polled for rooms", () => ((RoomManager)RoomManager).Rooms.Count == 0);
-            AddAssert("initial rooms not received", () => !RoomManager.InitialRoomsReceived.Value);
-        }
-
-        [Test]
-        public void TestMultiplayerRoomJoinedWhenCreated()
-        {
-            AddStep("create room manager with a room", () =>
-            {
-                RoomManager.CreateRoom(createRoom());
-            });
-
-            AddUntilStep("multiplayer room joined", () => Client.Room != null);
-        }
-
-        [Test]
-        public void TestMultiplayerRoomPartedWhenAPIRoomParted()
-        {
-            AddStep("create room manager with a room", () =>
-            {
-                RoomManager.CreateRoom(createRoom());
-                RoomManager.PartRoom();
-            });
-
-            AddAssert("multiplayer room parted", () => Client.Room == null);
-        }
-
-        [Test]
-        public void TestMultiplayerRoomJoinedWhenAPIRoomJoined()
-        {
-            AddStep("create room manager with a room", () =>
-            {
-                var r = createRoom();
-                RoomManager.CreateRoom(r);
-                RoomManager.PartRoom();
-                RoomManager.JoinRoom(r);
-            });
-
-            AddUntilStep("multiplayer room joined", () => Client.Room != null);
-        }
-
-        private Room createRoom(Action<Room> initFunc = null)
-        {
-            var room = new Room
-            {
-                Name =
-                {
-                    Value = "test room"
-                },
-                Playlist =
-                {
-                    new PlaylistItem
-                    {
-                        Beatmap = { Value = new TestBeatmap(Ruleset.Value).BeatmapInfo },
-                        Ruleset = { Value = Ruleset.Value }
-                    }
-                }
-            };
-
-            initFunc?.Invoke(room);
-            return room;
-        }
-
-        private class TestDependencies : MultiplayerTestSceneDependencies
-        {
-            public TestDependencies()
-            {
-                // Need to set these values as early as possible.
-                RoomManager.TimeBetweenListingPolls.Value = 1;
-                RoomManager.TimeBetweenSelectionPolls.Value = 1;
-            }
-        }
-    }
-}

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

@@ -16,7 +16,7 @@ namespace osu.Game.Tests.Visual.Playlists
 {
     public class TestScenePlaylistsLoungeSubScreen : OnlinePlayTestScene
     {
-        protected new BasicTestRoomManager RoomManager => (BasicTestRoomManager)base.RoomManager;
+        protected new TestRequestHandlingRoomManager RoomManager => (TestRequestHandlingRoomManager)base.RoomManager;
 
         private LoungeSubScreen loungeScreen;
 
@@ -37,6 +37,7 @@ namespace osu.Game.Tests.Visual.Playlists
             AddStep("reset mouse", () => InputManager.ReleaseButton(MouseButton.Left));
 
             AddStep("add rooms", () => RoomManager.AddRooms(30));
+            AddUntilStep("wait for rooms", () => roomsContainer.Rooms.Count == 30);
 
             AddUntilStep("first room is not masked", () => checkRoomVisible(roomsContainer.Rooms[0]));
 
@@ -53,6 +54,7 @@ namespace osu.Game.Tests.Visual.Playlists
         public void TestScrollSelectedIntoView()
         {
             AddStep("add rooms", () => RoomManager.AddRooms(30));
+            AddUntilStep("wait for rooms", () => roomsContainer.Rooms.Count == 30);
 
             AddUntilStep("first room is not masked", () => checkRoomVisible(roomsContainer.Rooms[0]));
 

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

@@ -110,7 +110,7 @@ namespace osu.Game.Tests.Visual.Playlists
             AddUntilStep("error not displayed", () => !settings.ErrorText.IsPresent);
         }
 
-        private class TestRoomSettings : PlaylistsMatchSettingsOverlay
+        private class TestRoomSettings : PlaylistsRoomSettingsOverlay
         {
             public TriangleButton ApplyButton => ((MatchSettings)Settings).ApplyButton;
 
@@ -141,6 +141,12 @@ namespace osu.Game.Tests.Visual.Playlists
 
             public IBindableList<Room> Rooms => null;
 
+            public void AddOrUpdateRoom(Room room) => throw new NotImplementedException();
+
+            public void RemoveRoom(Room room) => throw new NotImplementedException();
+
+            public void ClearRooms() => throw new NotImplementedException();
+
             public void CreateRoom(Room room, Action<Room> onSuccess = null, Action<string> onError = null)
             {
                 if (CreateRequested == null)

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

@@ -11,7 +11,6 @@ using osu.Framework.Platform;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
-using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu;
@@ -19,7 +18,6 @@ using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osu.Game.Users;
 using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Playlists
@@ -36,18 +34,6 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             Dependencies.Cache(rulesets = new RulesetStore(ContextFactory));
             Dependencies.Cache(manager = new BeatmapManager(LocalStorage, ContextFactory, rulesets, null, audio, Resources, host, Beatmap.Default));
-
-            ((DummyAPIAccess)API).HandleRequest = req =>
-            {
-                switch (req)
-                {
-                    case CreateRoomScoreRequest createRoomScoreRequest:
-                        createRoomScoreRequest.TriggerSuccess(new APIScoreToken { ID = 1 });
-                        return true;
-                }
-
-                return false;
-            };
         }
 
         [SetUpSteps]
@@ -66,7 +52,7 @@ namespace osu.Game.Tests.Visual.Playlists
             {
                 SelectedRoom.Value.RoomID.Value = 1;
                 SelectedRoom.Value.Name.Value = "my awesome room";
-                SelectedRoom.Value.Host.Value = new User { Id = 2, Username = "peppy" };
+                SelectedRoom.Value.Host.Value = API.LocalUser.Value;
                 SelectedRoom.Value.RecentParticipants.Add(SelectedRoom.Value.Host.Value);
                 SelectedRoom.Value.EndDate.Value = DateTimeOffset.Now.AddMinutes(5);
                 SelectedRoom.Value.Playlist.Add(new PlaylistItem
@@ -86,7 +72,7 @@ namespace osu.Game.Tests.Visual.Playlists
             AddStep("set room properties", () =>
             {
                 SelectedRoom.Value.Name.Value = "my awesome room";
-                SelectedRoom.Value.Host.Value = new User { Id = 2, Username = "peppy" };
+                SelectedRoom.Value.Host.Value = API.LocalUser.Value;
                 SelectedRoom.Value.Playlist.Add(new PlaylistItem
                 {
                     Beatmap = { Value = new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo },
@@ -96,7 +82,7 @@ namespace osu.Game.Tests.Visual.Playlists
 
             AddStep("move mouse to create button", () =>
             {
-                InputManager.MoveMouseTo(this.ChildrenOfType<PlaylistsMatchSettingsOverlay.CreateRoomButton>().Single());
+                InputManager.MoveMouseTo(this.ChildrenOfType<PlaylistsRoomSettingsOverlay.CreateRoomButton>().Single());
             });
 
             AddStep("click", () => InputManager.Click(MouseButton.Left));
@@ -137,7 +123,7 @@ namespace osu.Game.Tests.Visual.Playlists
             AddStep("load room", () =>
             {
                 SelectedRoom.Value.Name.Value = "my awesome room";
-                SelectedRoom.Value.Host.Value = new User { Id = 2, Username = "peppy" };
+                SelectedRoom.Value.Host.Value = API.LocalUser.Value;
                 SelectedRoom.Value.Playlist.Add(new PlaylistItem
                 {
                     Beatmap = { Value = importedSet.Beatmaps[0] },
@@ -147,7 +133,7 @@ namespace osu.Game.Tests.Visual.Playlists
 
             AddStep("create room", () =>
             {
-                InputManager.MoveMouseTo(match.ChildrenOfType<PlaylistsMatchSettingsOverlay.CreateRoomButton>().Single());
+                InputManager.MoveMouseTo(match.ChildrenOfType<PlaylistsRoomSettingsOverlay.CreateRoomButton>().Single());
                 InputManager.Click(MouseButton.Left);
             });
 

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

@@ -1,65 +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.Linq;
-using NUnit.Framework;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Utils;
-using osu.Game.Beatmaps;
-using osu.Game.Screens.Ranking.Expanded;
-using osuTK;
-
-namespace osu.Game.Tests.Visual.Ranking
-{
-    public class TestSceneStarRatingDisplay : OsuTestScene
-    {
-        [Test]
-        public void TestDisplay()
-        {
-            AddStep("load displays", () => Child = new FillFlowContainer
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                ChildrenEnumerable = new[]
-                {
-                    1.23,
-                    2.34,
-                    3.45,
-                    4.56,
-                    5.67,
-                    6.78,
-                    10.11,
-                }.Select(starRating => new StarRatingDisplay(new StarDifficulty(starRating, 0))
-                {
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre
-                })
-            });
-        }
-
-        [Test]
-        public void TestChangingStarRatingDisplay()
-        {
-            StarRatingDisplay starRating = null;
-
-            AddStep("load display", () => Child = starRating = new StarRatingDisplay(new StarDifficulty(5.55, 1))
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                Scale = new Vector2(3f),
-            });
-
-            AddRepeatStep("set random value", () =>
-            {
-                starRating.Current.Value = new StarDifficulty(RNG.NextDouble(0.0, 11.0), 1);
-            }, 10);
-
-            AddSliderStep("set exact stars", 0.0, 11.0, 5.55, d =>
-            {
-                if (starRating != null)
-                    starRating.Current.Value = new StarDifficulty(d, 1);
-            });
-        }
-    }
-}

osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs

@@ -32,6 +32,7 @@ namespace osu.Game.Tests.Visual.Settings
         [SetUpSteps]
         public void SetUpSteps()
         {
+            AddUntilStep("wait for load", () => panel.ChildrenOfType<GlobalKeyBindingsSection>().Any());
             AddStep("Scroll to top", () => panel.ChildrenOfType<SettingsPanel.SettingsSectionsContainer>().First().ScrollToTop());
             AddWaitStep("wait for scroll", 5);
         }

osu.Game.Tests/Visual/Settings/TestSceneSettingsItem.cs

@@ -76,5 +76,23 @@ namespace osu.Game.Tests.Visual.Settings
             AddStep("restore default", () => sliderBar.Current.SetDefault());
             AddUntilStep("restore button hidden", () => restoreDefaultValueButton.Alpha == 0);
         }
+
+        [Test]
+        public void TestWarningTextVisibility()
+        {
+            SettingsNumberBox numberBox = null;
+
+            AddStep("create settings item", () => Child = numberBox = new SettingsNumberBox());
+            AddAssert("warning text not created", () => !numberBox.ChildrenOfType<SettingsNoticeText>().Any());
+
+            AddStep("set warning text", () => numberBox.WarningText = "this is a warning!");
+            AddAssert("warning text created", () => numberBox.ChildrenOfType<SettingsNoticeText>().Single().Alpha == 1);
+
+            AddStep("unset warning text", () => numberBox.WarningText = default);
+            AddAssert("warning text hidden", () => numberBox.ChildrenOfType<SettingsNoticeText>().Single().Alpha == 0);
+
+            AddStep("set warning text again", () => numberBox.WarningText = "another warning!");
+            AddAssert("warning text shown again", () => numberBox.ChildrenOfType<SettingsNoticeText>().Single().Alpha == 1);
+        }
     }
 }

osu.Game.Tests/Visual/Settings/TestSceneSettingsPanel.cs

@@ -4,6 +4,7 @@
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
 using osu.Game.Overlays;
 
 namespace osu.Game.Tests.Visual.Settings
@@ -11,27 +12,39 @@ namespace osu.Game.Tests.Visual.Settings
     [TestFixture]
     public class TestSceneSettingsPanel : OsuTestScene
     {
-        private readonly SettingsPanel settings;
-        private readonly DialogOverlay dialogOverlay;
+        private SettingsPanel settings;
+        private DialogOverlay dialogOverlay;
 
-        public TestSceneSettingsPanel()
+        [SetUpSteps]
+        public void SetUpSteps()
         {
-            settings = new SettingsOverlay
+            AddStep("create settings", () =>
+            {
+                settings?.Expire();
+
+                Add(settings = new SettingsOverlay
                 {
                     State = { Value = Visibility.Visible }
-            };
-            Add(dialogOverlay = new DialogOverlay
-            {
-                Depth = -1
                 });
+            });
+        }
+
+        [Test]
+        public void ToggleVisibility()
+        {
+            AddWaitStep("wait some", 5);
+            AddToggleStep("toggle editor visibility", visible => settings.ToggleVisibility());
         }
 
         [BackgroundDependencyLoader]
         private void load()
         {
-            Dependencies.Cache(dialogOverlay);
+            Add(dialogOverlay = new DialogOverlay
+            {
+                Depth = -1
+            });
 
-            Add(settings);
+            Dependencies.Cache(dialogOverlay);
         }
     }
 }

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

@@ -8,6 +8,7 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.Sprites;
@@ -65,6 +66,12 @@ namespace osu.Game.Tests.Visual.SongSelect
 
             AddStep("show", () => { infoWedge.Show(); });
 
+            AddSliderStep("change star difficulty", 0, 11.9, 5.55, v =>
+            {
+                foreach (var hasCurrentValue in infoWedge.Info.ChildrenOfType<IHasCurrentValue<StarDifficulty>>())
+                    hasCurrentValue.Current.Value = new StarDifficulty(v, 0);
+            });
+
             foreach (var rulesetInfo in rulesets.AvailableRulesets)
             {
                 var instance = rulesetInfo.CreateInstance();

osu.Game.Tests/Visual/UserInterface/TestSceneStarRatingDisplay.cs

@@ -0,0 +1,71 @@
+// 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.Linq;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Drawables;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    public class TestSceneStarRatingDisplay : OsuTestScene
+    {
+        [TestCase(StarRatingDisplaySize.Regular)]
+        [TestCase(StarRatingDisplaySize.Small)]
+        public void TestDisplay(StarRatingDisplaySize size)
+        {
+            AddStep("load displays", () =>
+            {
+                Child = new FillFlowContainer
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    AutoSizeAxes = Axes.Both,
+                    Spacing = new Vector2(2f),
+                    Direction = FillDirection.Horizontal,
+                    ChildrenEnumerable = Enumerable.Range(0, 15).Select(i => new FillFlowContainer
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,
+                        Spacing = new Vector2(2f),
+                        Direction = FillDirection.Vertical,
+                        ChildrenEnumerable = Enumerable.Range(0, 10).Select(j => new StarRatingDisplay(new StarDifficulty(i * (i >= 11 ? 25f : 1f) + j * 0.1f, 0), size)
+                        {
+                            Anchor = Anchor.Centre,
+                            Origin = Anchor.Centre,
+                        }),
+                    })
+                };
+            });
+        }
+
+        [Test]
+        public void TestSpectrum()
+        {
+            StarRatingDisplay starRating = null;
+
+            AddStep("load display", () => Child = starRating = new StarRatingDisplay(new StarDifficulty(5.55, 1), animated: true)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Scale = new Vector2(3f),
+            });
+
+            AddRepeatStep("set random value", () =>
+            {
+                starRating.Current.Value = new StarDifficulty(RNG.NextDouble(0.0, 11.0), 1);
+            }, 10);
+
+            AddSliderStep("set exact stars", 0.0, 11.0, 5.55, d =>
+            {
+                if (starRating != null)
+                    starRating.Current.Value = new StarDifficulty(d, 1);
+            });
+        }
+    }
+}

osu.Game/Beatmaps/BeatmapDifficultyCache.cs

@@ -14,6 +14,7 @@ using osu.Framework.Lists;
 using osu.Framework.Logging;
 using osu.Framework.Threading;
 using osu.Framework.Utils;
+using osu.Game.Configuration;
 using osu.Game.Database;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
@@ -56,12 +57,28 @@ namespace osu.Game.Beatmaps
         [Resolved]
         private Bindable<IReadOnlyList<Mod>> currentMods { get; set; }
 
+        private ModSettingChangeTracker modSettingChangeTracker;
+        private ScheduledDelegate debouncedModSettingsChange;
+
         protected override void LoadComplete()
         {
             base.LoadComplete();
 
             currentRuleset.BindValueChanged(_ => updateTrackedBindables());
-            currentMods.BindValueChanged(_ => updateTrackedBindables(), true);
+
+            currentMods.BindValueChanged(mods =>
+            {
+                modSettingChangeTracker?.Dispose();
+
+                updateTrackedBindables();
+
+                modSettingChangeTracker = new ModSettingChangeTracker(mods.NewValue);
+                modSettingChangeTracker.SettingChanged += _ =>
+                {
+                    debouncedModSettingsChange?.Cancel();
+                    debouncedModSettingsChange = Scheduler.AddDelayed(updateTrackedBindables, 100);
+                };
+            }, true);
         }
 
         /// <summary>
@@ -84,7 +101,7 @@ namespace osu.Game.Beatmaps
         /// Retrieves a bindable containing the star difficulty of a <see cref="BeatmapInfo"/> with a given <see cref="RulesetInfo"/> and <see cref="Mod"/> combination.
         /// </summary>
         /// <remarks>
-        /// The bindable will not update to follow the currently-selected ruleset and mods.
+        /// The bindable will not update to follow the currently-selected ruleset and mods or its settings.
         /// </remarks>
         /// <param name="beatmapInfo">The <see cref="BeatmapInfo"/> to get the difficulty of.</param>
         /// <param name="rulesetInfo">The <see cref="RulesetInfo"/> to get the difficulty with. If <c>null</c>, the <paramref name="beatmapInfo"/>'s ruleset is used.</param>
@@ -275,6 +292,8 @@ namespace osu.Game.Beatmaps
         {
             base.Dispose(isDisposing);
 
+            modSettingChangeTracker?.Dispose();
+
             cancelTrackedBindableUpdate();
             updateScheduler?.Dispose();
         }
@@ -297,7 +316,7 @@ namespace osu.Game.Beatmaps
             public bool Equals(DifficultyCacheLookup other)
                 => Beatmap.ID == other.Beatmap.ID
                    && Ruleset.ID == other.Ruleset.ID
-                   && OrderedMods.Select(m => m.Acronym).SequenceEqual(other.OrderedMods.Select(m => m.Acronym));
+                   && OrderedMods.SequenceEqual(other.OrderedMods);
 
             public override int GetHashCode()
             {
@@ -307,7 +326,7 @@ namespace osu.Game.Beatmaps
                 hashCode.Add(Ruleset.ID);
 
                 foreach (var mod in OrderedMods)
-                    hashCode.Add(mod.Acronym);
+                    hashCode.Add(mod);
 
                 return hashCode.ToHashCode();
             }

osu.Game/Beatmaps/Drawables/StarRatingDisplay.cs

@@ -0,0 +1,168 @@
+// 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.Bindables;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Localisation;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Overlays;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Beatmaps.Drawables
+{
+    /// <summary>
+    /// A pill that displays the star rating of a beatmap.
+    /// </summary>
+    public class StarRatingDisplay : CompositeDrawable, IHasCurrentValue<StarDifficulty>
+    {
+        private readonly bool animated;
+        private readonly Box background;
+        private readonly SpriteIcon starIcon;
+        private readonly OsuSpriteText starsText;
+
+        private readonly BindableWithCurrent<StarDifficulty> current = new BindableWithCurrent<StarDifficulty>();
+
+        public Bindable<StarDifficulty> Current
+        {
+            get => current.Current;
+            set => current.Current = value;
+        }
+
+        private readonly Bindable<double> displayedStars = new BindableDouble();
+
+        /// <summary>
+        /// The currently displayed stars of this display wrapped in a bindable.
+        /// This bindable gets transformed on change rather than instantaneous, if animation is enabled.
+        /// </summary>
+        public IBindable<double> DisplayedStars => displayedStars;
+
+        [Resolved]
+        private OsuColour colours { get; set; }
+
+        [Resolved(canBeNull: true)]
+        private OverlayColourProvider colourProvider { get; set; }
+
+        /// <summary>
+        /// Creates a new <see cref="StarRatingDisplay"/> using an already computed <see cref="StarDifficulty"/>.
+        /// </summary>
+        /// <param name="starDifficulty">The already computed <see cref="StarDifficulty"/> to display.</param>
+        /// <param name="size">The size of the star rating display.</param>
+        /// <param name="animated">Whether the star rating display will perform transforms on change rather than updating instantaneously.</param>
+        public StarRatingDisplay(StarDifficulty starDifficulty, StarRatingDisplaySize size = StarRatingDisplaySize.Regular, bool animated = false)
+        {
+            this.animated = animated;
+
+            Current.Value = starDifficulty;
+
+            AutoSizeAxes = Axes.Both;
+
+            MarginPadding margin = default;
+
+            switch (size)
+            {
+                case StarRatingDisplaySize.Small:
+                    margin = new MarginPadding { Horizontal = 7f };
+                    break;
+
+                case StarRatingDisplaySize.Range:
+                    margin = new MarginPadding { Horizontal = 8f };
+                    break;
+
+                case StarRatingDisplaySize.Regular:
+                    margin = new MarginPadding { Horizontal = 8f, Vertical = 2f };
+                    break;
+            }
+
+            InternalChild = new CircularContainer
+            {
+                Masking = true,
+                AutoSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    background = new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                    },
+                    new GridContainer
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,
+                        Margin = margin,
+                        ColumnDimensions = new[]
+                        {
+                            new Dimension(GridSizeMode.AutoSize),
+                            new Dimension(GridSizeMode.Absolute, 3f),
+                            new Dimension(GridSizeMode.AutoSize, minSize: 25f),
+                        },
+                        RowDimensions = new[] { new Dimension(GridSizeMode.AutoSize) },
+                        Content = new[]
+                        {
+                            new[]
+                            {
+                                starIcon = new SpriteIcon
+                                {
+                                    Anchor = Anchor.Centre,
+                                    Origin = Anchor.Centre,
+                                    Icon = FontAwesome.Solid.Star,
+                                    Size = new Vector2(8f),
+                                },
+                                Empty(),
+                                starsText = new OsuSpriteText
+                                {
+                                    Anchor = Anchor.Centre,
+                                    Origin = Anchor.Centre,
+                                    Margin = new MarginPadding { Bottom = 1.5f },
+                                    // todo: this should be size: 12f, but to match up with the design, it needs to be 14.4f
+                                    // see https://github.com/ppy/osu-framework/issues/3271.
+                                    Font = OsuFont.Torus.With(size: 14.4f, weight: FontWeight.Bold),
+                                    Shadow = false,
+                                },
+                            }
+                        }
+                    },
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            Current.BindValueChanged(c =>
+            {
+                if (animated)
+                    this.TransformBindableTo(displayedStars, c.NewValue.Stars, 750, Easing.OutQuint);
+                else
+                    displayedStars.Value = c.NewValue.Stars;
+            });
+
+            displayedStars.Value = Current.Value.Stars;
+
+            displayedStars.BindValueChanged(s =>
+            {
+                starsText.Text = s.NewValue.ToLocalisableString("0.00");
+
+                background.Colour = colours.ForStarDifficulty(s.NewValue);
+
+                starIcon.Colour = s.NewValue >= 6.5 ? colours.Orange1 : colourProvider?.Background5 ?? Color4Extensions.FromHex("303d47");
+                starsText.Colour = s.NewValue >= 6.5 ? colours.Orange1 : colourProvider?.Background5 ?? Color4.Black.Opacity(0.75f);
+            }, true);
+        }
+    }
+
+    public enum StarRatingDisplaySize
+    {
+        Small,
+        Range,
+        Regular,
+    }
+}

osu.Game/Database/MutableDatabaseBackedStore.cs

@@ -36,6 +36,11 @@ namespace osu.Game.Database
         /// </summary>
         public IQueryable<T> ConsumableItems => AddIncludesForConsumption(ContextFactory.Get().Set<T>());
 
+        /// <summary>
+        /// Access barebones items with no includes.
+        /// </summary>
+        public IQueryable<T> Items => ContextFactory.Get().Set<T>();
+
         /// <summary>
         /// Add a <typeparamref name="T"/> to the database.
         /// </summary>

osu.Game/Graphics/UserInterface/FocusedTextBox.cs

@@ -22,9 +22,14 @@ namespace osu.Game.Graphics.UserInterface
 
         public void TakeFocus()
         {
-            if (allowImmediateFocus) GetContainingInputManager().ChangeFocus(this);
+            if (!allowImmediateFocus)
+                return;
+
+            Scheduler.Add(() => GetContainingInputManager().ChangeFocus(this), false);
         }
 
+        public new void KillFocus() => base.KillFocus();
+
         public bool HoldFocus
         {
             get => allowImmediateFocus && focus;

osu.Game/Graphics/UserInterface/Nub.cs

@@ -6,6 +6,7 @@ using osuTK;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -57,18 +58,13 @@ namespace osu.Game.Graphics.UserInterface
 
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = GlowColour,
+                Colour = GlowColour.Opacity(0),
                 Type = EdgeEffectType.Glow,
                 Radius = 10,
                 Roundness = 8,
             };
         }
 
-        protected override void LoadComplete()
-        {
-            FadeEdgeEffectTo(0);
-        }
-
         private bool glowing;
 
         public bool Glowing

osu.Game/Graphics/UserInterface/OsuButton.cs

@@ -36,6 +36,7 @@ namespace osu.Game.Graphics.UserInterface
 
         public Color4 BackgroundColour
         {
+            get => backgroundColour ?? Color4.White;
             set
             {
                 backgroundColour = value;

osu.Game/Graphics/UserInterface/OsuDropdown.cs

@@ -69,6 +69,7 @@ namespace osu.Game.Graphics.UserInterface
                 BackgroundColour = Color4.Black.Opacity(0.5f);
 
                 MaskingContainer.CornerRadius = corner_radius;
+                Alpha = 0;
 
                 // todo: this uses the same styling as OsuMenu. hopefully we can just use OsuMenu in the future with some refactoring
                 ItemsContainer.Padding = new MarginPadding(5);
@@ -94,10 +95,12 @@ namespace osu.Game.Graphics.UserInterface
 
             protected override void AnimateClose()
             {
-                this.FadeOut(300, Easing.OutQuint);
                 if (wasOpened)
+                {
+                    this.FadeOut(300, Easing.OutQuint);
                     sampleClose?.Play();
                 }
+            }
 
             // todo: this uses the same styling as OsuMenu. hopefully we can just use OsuMenu in the future with some refactoring
             protected override void UpdateSize(Vector2 newSize)

osu.Game/Input/Bindings/GlobalActionContainer.cs

@@ -90,6 +90,7 @@ namespace osu.Game.Input.Bindings
             new KeyBinding(InputKey.Left, GlobalAction.SeekReplayBackward),
             new KeyBinding(InputKey.Right, GlobalAction.SeekReplayForward),
             new KeyBinding(InputKey.Control, GlobalAction.HoldForHUD),
+            new KeyBinding(InputKey.Tab, GlobalAction.ToggleChatFocus),
         };
 
         public IEnumerable<KeyBinding> SongSelectKeyBindings => new[]
@@ -280,5 +281,8 @@ namespace osu.Game.Input.Bindings
 
         [Description("Seek replay backward")]
         SeekReplayBackward,
+
+        [Description("Toggle chat focus")]
+        ToggleChatFocus
     }
 }

osu.Game/Input/ConfineMouseTracker.cs

@@ -7,6 +7,7 @@ using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Input;
 using osu.Game.Configuration;
+using osu.Game.Screens.Play;
 
 namespace osu.Game.Input
 {
@@ -24,14 +25,14 @@ namespace osu.Game.Input
         private IBindable<bool> localUserPlaying;
 
         [BackgroundDependencyLoader]
-        private void load(OsuGame game, FrameworkConfigManager frameworkConfigManager, OsuConfigManager osuConfigManager)
+        private void load(ILocalUserPlayInfo localUserInfo, FrameworkConfigManager frameworkConfigManager, OsuConfigManager osuConfigManager)
         {
             frameworkConfineMode = frameworkConfigManager.GetBindable<ConfineMouseMode>(FrameworkSetting.ConfineMouseMode);
             frameworkWindowMode = frameworkConfigManager.GetBindable<WindowMode>(FrameworkSetting.WindowMode);
             frameworkWindowMode.BindValueChanged(_ => updateConfineMode());
 
             osuConfineMode = osuConfigManager.GetBindable<OsuConfineMouseMode>(OsuSetting.ConfineMouseMode);
-            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying = localUserInfo.IsPlaying.GetBoundCopy();
 
             osuConfineMode.ValueChanged += _ => updateConfineMode();
             localUserPlaying.BindValueChanged(_ => updateConfineMode(), true);

osu.Game/Online/Chat/StandAloneChatDisplay.cs

@@ -8,6 +8,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Chat;
@@ -22,7 +23,7 @@ namespace osu.Game.Online.Chat
     {
         public readonly Bindable<Channel> Channel = new Bindable<Channel>();
 
-        private readonly FocusedTextBox textbox;
+        protected readonly ChatTextBox Textbox;
 
         protected ChannelManager ChannelManager;
 
@@ -30,6 +31,8 @@ namespace osu.Game.Online.Chat
 
         private readonly bool postingTextbox;
 
+        protected readonly Box Background;
+
         private const float textbox_height = 30;
 
         /// <summary>
@@ -44,7 +47,7 @@ namespace osu.Game.Online.Chat
 
             InternalChildren = new Drawable[]
             {
-                new Box
+                Background = new Box
                 {
                     Colour = Color4.Black,
                     Alpha = 0.8f,
@@ -54,7 +57,7 @@ namespace osu.Game.Online.Chat
 
             if (postingTextbox)
             {
-                AddInternal(textbox = new FocusedTextBox
+                AddInternal(Textbox = new ChatTextBox
                 {
                     RelativeSizeAxes = Axes.X,
                     Height = textbox_height,
@@ -65,7 +68,7 @@ namespace osu.Game.Online.Chat
                     Origin = Anchor.BottomLeft,
                 });
 
-                textbox.OnCommit += postMessage;
+                Textbox.OnCommit += postMessage;
             }
 
             Channel.BindValueChanged(channelChanged);
@@ -82,7 +85,7 @@ namespace osu.Game.Online.Chat
 
         private void postMessage(TextBox sender, bool newtext)
         {
-            var text = textbox.Text.Trim();
+            var text = Textbox.Text.Trim();
 
             if (string.IsNullOrWhiteSpace(text))
                 return;
@@ -92,7 +95,7 @@ namespace osu.Game.Online.Chat
             else
                 ChannelManager?.PostMessage(text, target: Channel.Value);
 
-            textbox.Text = string.Empty;
+            Textbox.Text = string.Empty;
         }
 
         protected virtual ChatLine CreateMessage(Message message) => new StandAloneMessage(message);
@@ -110,6 +113,25 @@ namespace osu.Game.Online.Chat
             AddInternal(drawableChannel);
         }
 
+        public class ChatTextBox : FocusedTextBox
+        {
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
+
+                BackgroundUnfocused = new Color4(10, 10, 10, 10);
+                BackgroundFocused = new Color4(10, 10, 10, 255);
+            }
+
+            protected override void OnFocusLost(FocusLostEvent e)
+            {
+                base.OnFocusLost(e);
+                FocusLost?.Invoke();
+            }
+
+            public Action FocusLost;
+        }
+
         public class StandAloneDrawableChannel : DrawableChannel
         {
             public Func<Message, ChatLine> CreateChatLineAction;

osu.Game/Online/PollingComponent.cs

@@ -47,39 +47,13 @@ namespace osu.Game.Online
             pollIfNecessary();
         }
 
-        private bool pollIfNecessary()
+        /// <summary>
+        /// Immediately performs a <see cref="Poll"/>.
+        /// </summary>
+        public void PollImmediately()
         {
-            // we must be loaded so we have access to clock.
-            if (!IsLoaded) return false;
-
-            // there's already a poll process running.
-            if (pollingActive) return false;
-
-            // don't try polling if the time between polls hasn't been set.
-            if (TimeBetweenPolls.Value == 0) return false;
-
-            if (!lastTimePolled.HasValue)
-            {
-                doPoll();
-                return true;
-            }
-
-            if (Time.Current - lastTimePolled.Value > TimeBetweenPolls.Value)
-            {
-                doPoll();
-                return true;
-            }
-
-            // not enough time has passed since the last poll. we do want to schedule a poll to happen, though.
+            lastTimePolled = Time.Current - TimeBetweenPolls.Value;
             scheduleNextPoll();
-            return false;
-        }
-
-        private void doPoll()
-        {
-            scheduledPoll = null;
-            pollingActive = true;
-            Poll().ContinueWith(_ => pollComplete());
         }
 
         /// <summary>
@@ -90,13 +64,11 @@ namespace osu.Game.Online
             return Task.CompletedTask;
         }
 
-        /// <summary>
-        /// Immediately performs a <see cref="Poll"/>.
-        /// </summary>
-        public void PollImmediately()
+        private void doPoll()
         {
-            lastTimePolled = Time.Current - TimeBetweenPolls.Value;
-            scheduleNextPoll();
+            scheduledPoll = null;
+            pollingActive = true;
+            Poll().ContinueWith(_ => pollComplete());
         }
 
         /// <summary>
@@ -111,6 +83,33 @@ namespace osu.Game.Online
                 pollIfNecessary();
         }
 
+        private void pollIfNecessary()
+        {
+            // we must be loaded so we have access to clock.
+            if (!IsLoaded) return;
+
+            // there's already a poll process running.
+            if (pollingActive) return;
+
+            // don't try polling if the time between polls hasn't been set.
+            if (TimeBetweenPolls.Value == 0) return;
+
+            if (!lastTimePolled.HasValue)
+            {
+                doPoll();
+                return;
+            }
+
+            if (Time.Current - lastTimePolled.Value > TimeBetweenPolls.Value)
+            {
+                doPoll();
+                return;
+            }
+
+            // not enough time has passed since the last poll. we do want to schedule a poll to happen, though.
+            scheduleNextPoll();
+        }
+
         private void scheduleNextPoll()
         {
             scheduledPoll?.Cancel();

osu.Game/Online/Rooms/Room.cs

@@ -134,7 +134,7 @@ namespace osu.Game.Online.Rooms
         /// The position of this <see cref="Room"/> in the list. This is not read from or written to the API.
         /// </summary>
         [JsonIgnore]
-        public readonly Bindable<int> Position = new Bindable<int>(-1);
+        public readonly Bindable<long> Position = new Bindable<long>(-1); // Todo: This does not need to exist.
 
         public Room()
         {

osu.Game/Online/Rooms/RoomCategory.cs

@@ -8,6 +8,5 @@ namespace osu.Game.Online.Rooms
         // used for osu-web deserialization so names shouldn't be changed.
         Normal,
         Spotlight,
-        Realtime,
     }
 }

osu.Game/OsuGame.cs

@@ -62,7 +62,7 @@ namespace osu.Game
     /// The full osu! experience. Builds on top of <see cref="OsuGameBase"/> to add menus and binding logic
     /// for initial components that are generally retrieved via DI.
     /// </summary>
-    public class OsuGame : OsuGameBase, IKeyBindingHandler<GlobalAction>
+    public class OsuGame : OsuGameBase, IKeyBindingHandler<GlobalAction>, ILocalUserPlayInfo
     {
         /// <summary>
         /// The amount of global offset to apply when a left/right anchored overlay is displayed (ie. settings or notifications).
@@ -1085,5 +1085,7 @@ namespace osu.Game
             if (newScreen == null)
                 Exit();
         }
+
+        IBindable<bool> ILocalUserPlayInfo.IsPlaying => LocalUserPlaying;
     }
 }

osu.Game/Overlays/RestoreDefaultValueButton.cs

@@ -6,6 +6,7 @@ using osu.Framework.Bindables;
 using osuTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.UserInterface;
@@ -38,12 +39,12 @@ namespace osu.Game.Overlays
                 current.ValueChanged += _ => UpdateState();
                 current.DefaultChanged += _ => UpdateState();
                 current.DisabledChanged += _ => UpdateState();
+
+                if (IsLoaded)
                     UpdateState();
             }
         }
 
-        private Color4 buttonColour;
-
         private bool hovering;
 
         public RestoreDefaultValueButton()
@@ -58,12 +59,11 @@ namespace osu.Game.Overlays
         private void load(OsuColour colour)
         {
             BackgroundColour = colour.Yellow;
-            buttonColour = colour.Yellow;
             Content.Width = 0.33f;
             Content.CornerRadius = 3;
             Content.EdgeEffect = new EdgeEffectParameters
             {
-                Colour = buttonColour.Opacity(0.1f),
+                Colour = BackgroundColour.Opacity(0.1f),
                 Type = EdgeEffectType.Glow,
                 Radius = 2,
             };
@@ -81,7 +81,10 @@ namespace osu.Game.Overlays
         protected override void LoadComplete()
         {
             base.LoadComplete();
-            UpdateState();
+
+            // avoid unnecessary transforms on first display.
+            Alpha = currentAlpha;
+            Background.Colour = currentColour;
         }
 
         public LocalisableString TooltipText => "revert to default";
@@ -101,14 +104,16 @@ namespace osu.Game.Overlays
 
         public void UpdateState() => Scheduler.AddOnce(updateState);
 
+        private float currentAlpha => current.IsDefault ? 0f : hovering && !current.Disabled ? 1f : 0.65f;
+        private ColourInfo currentColour => current.Disabled ? Color4.Gray : BackgroundColour;
+
         private void updateState()
         {
             if (current == null)
                 return;
 
-            this.FadeTo(current.IsDefault ? 0f :
-                hovering && !current.Disabled ? 1f : 0.65f, 200, Easing.OutQuint);
-            this.FadeColour(current.Disabled ? Color4.Gray : buttonColour, 200, Easing.OutQuint);
+            this.FadeTo(currentAlpha, 200, Easing.OutQuint);
+            Background.FadeColour(currentColour, 200, Easing.OutQuint);
         }
     }
 }

osu.Game/Overlays/Settings/Sections/Audio/AudioDevicesSettings.cs

@@ -21,17 +21,26 @@ namespace osu.Game.Overlays.Settings.Sections.Audio
 
         private SettingsDropdown<string> dropdown;
 
-        protected override void Dispose(bool isDisposing)
+        [BackgroundDependencyLoader]
+        private void load()
         {
-            base.Dispose(isDisposing);
+            Children = new Drawable[]
+            {
+                dropdown = new AudioDeviceSettingsDropdown
+                {
+                    Keywords = new[] { "speaker", "headphone", "output" }
+                }
+            };
 
-            if (audio != null)
-            {
-                audio.OnNewDevice -= onDeviceChanged;
-                audio.OnLostDevice -= onDeviceChanged;
-            }
+            updateItems();
+
+            audio.OnNewDevice += onDeviceChanged;
+            audio.OnLostDevice += onDeviceChanged;
+            dropdown.Current = audio.AudioDevice;
         }
 
+        private void onDeviceChanged(string name) => updateItems();
+
         private void updateItems()
         {
             var deviceItems = new List<string> { string.Empty };
@@ -50,26 +59,15 @@ namespace osu.Game.Overlays.Settings.Sections.Audio
             dropdown.Items = deviceItems.Distinct().ToList();
         }
 
-        private void onDeviceChanged(string name) => updateItems();
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
 
-        protected override void LoadComplete()
+            if (audio != null)
             {
-            base.LoadComplete();
-
-            Children = new Drawable[]
-            {
-                dropdown = new AudioDeviceSettingsDropdown
-                {
-                    Keywords = new[] { "speaker", "headphone", "output" }
+                audio.OnNewDevice -= onDeviceChanged;
+                audio.OnLostDevice -= onDeviceChanged;
             }
-            };
-
-            updateItems();
-
-            dropdown.Current = audio.AudioDevice;
-
-            audio.OnNewDevice += onDeviceChanged;
-            audio.OnLostDevice += onDeviceChanged;
         }
 
         private class AudioDeviceSettingsDropdown : SettingsDropdown<string>

osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs

@@ -98,8 +98,6 @@ namespace osu.Game.Overlays.Settings.Sections.Graphics
                     Direction = FillDirection.Vertical,
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
-                    AutoSizeDuration = transition_duration,
-                    AutoSizeEasing = Easing.OutQuint,
                     Masking = true,
                     Children = new[]
                     {
@@ -176,13 +174,14 @@ namespace osu.Game.Overlays.Settings.Sections.Graphics
             scalingMode.BindValueChanged(mode =>
             {
                 scalingSettings.ClearTransforms();
-                scalingSettings.AutoSizeAxes = mode.NewValue != ScalingMode.Off ? Axes.Y : Axes.None;
+                scalingSettings.AutoSizeDuration = transition_duration;
+                scalingSettings.AutoSizeEasing = Easing.OutQuint;
 
-                if (mode.NewValue == ScalingMode.Off)
-                    scalingSettings.ResizeHeightTo(0, transition_duration, Easing.OutQuint);
+                updateScalingModeVisibility();
+            });
 
-                scalingSettings.ForEach(s => s.TransferValueOnCommit = mode.NewValue == ScalingMode.Everything);
-            }, true);
+            // initial update bypasses transforms
+            updateScalingModeVisibility();
 
             void updateResolutionDropdown()
             {
@@ -191,6 +190,15 @@ namespace osu.Game.Overlays.Settings.Sections.Graphics
                 else
                     resolutionDropdown.Hide();
             }
+
+            void updateScalingModeVisibility()
+            {
+                if (scalingMode.Value == ScalingMode.Off)
+                    scalingSettings.ResizeHeightTo(0, transition_duration, Easing.OutQuint);
+
+                scalingSettings.AutoSizeAxes = scalingMode.Value != ScalingMode.Off ? Axes.Y : Axes.None;
+                scalingSettings.ForEach(s => s.TransferValueOnCommit = scalingMode.Value == ScalingMode.Everything);
+            }
         }
 
         private void bindPreviewEvent(Bindable<float> bindable)

osu.Game/Overlays/Settings/SettingsItem.cs

@@ -65,7 +65,7 @@ namespace osu.Game.Overlays.Settings
         {
             set
             {
-                bool hasValue = string.IsNullOrWhiteSpace(value.ToString());
+                bool hasValue = !string.IsNullOrWhiteSpace(value.ToString());
 
                 if (warningText == null)
                 {
@@ -76,7 +76,7 @@ namespace osu.Game.Overlays.Settings
                     FlowContent.Add(warningText = new SettingsNoticeText(colours) { Margin = new MarginPadding { Bottom = 5 } });
                 }
 
-                warningText.Alpha = hasValue ? 0 : 1;
+                warningText.Alpha = hasValue ? 1 : 0;
                 warningText.Text = value.ToString(); // TODO: Remove ToString() call after TextFlowContainer supports localisation (see https://github.com/ppy/osu-framework/issues/4636).
             }
         }
@@ -93,15 +93,13 @@ namespace osu.Game.Overlays.Settings
 
         public bool MatchingFilter
         {
-            set => this.FadeTo(value ? 1 : 0);
+            set => Alpha = value ? 1 : 0;
         }
 
         public bool FilteringActive { get; set; }
 
         public event Action SettingChanged;
 
-        private readonly RestoreDefaultValueButton<T> restoreDefaultButton;
-
         protected SettingsItem()
         {
             RelativeSizeAxes = Axes.X;
@@ -110,7 +108,6 @@ namespace osu.Game.Overlays.Settings
 
             InternalChildren = new Drawable[]
             {
-                restoreDefaultButton = new RestoreDefaultValueButton<T>(),
                 FlowContent = new FillFlowContainer
                 {
                     RelativeSizeAxes = Axes.X,
@@ -123,7 +120,7 @@ namespace osu.Game.Overlays.Settings
                 },
             };
 
-            // all bindable logic is in constructor intentionally to support "CreateSettingsControls" being used in a context it is
+            // IMPORTANT: all bindable logic is in constructor intentionally to support "CreateSettingsControls" being used in a context it is
             // never loaded, but requires bindable storage.
             if (controlWithCurrent == null)
                 throw new ArgumentException(@$"Control created via {nameof(CreateControl)} must implement {nameof(IHasCurrentValue<T>)}");
@@ -132,12 +129,17 @@ namespace osu.Game.Overlays.Settings
             controlWithCurrent.Current.DisabledChanged += _ => updateDisabled();
         }
 
-        protected override void LoadComplete()
+        [BackgroundDependencyLoader]
+        private void load()
         {
-            base.LoadComplete();
-
+            // intentionally done before LoadComplete to avoid overhead.
             if (ShowsDefaultIndicator)
-                restoreDefaultButton.Current = controlWithCurrent.Current;
+            {
+                AddInternal(new RestoreDefaultValueButton<T>
+                {
+                    Current = controlWithCurrent.Current,
+                });
+            }
         }
 
         private void updateDisabled()

osu.Game/Overlays/Settings/SidebarButton.cs

@@ -22,6 +22,9 @@ namespace osu.Game.Overlays.Settings
         private readonly Box selectionIndicator;
         private readonly Container text;
 
+        // always consider as part of flow, even when not visible (for the sake of the initial animation).
+        public override bool IsPresent => true;
+
         private SettingsSection section;
 
         public SettingsSection Section

osu.Game/Overlays/SettingsPanel.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using osuTK;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
@@ -58,6 +59,12 @@ namespace osu.Game.Overlays
 
         private readonly bool showSidebar;
 
+        private LoadingLayer loading;
+
+        private readonly List<SettingsSection> loadableSections = new List<SettingsSection>();
+
+        private Task sectionsLoadingTask;
+
         protected SettingsPanel(bool showSidebar)
         {
             this.showSidebar = showSidebar;
@@ -86,7 +93,14 @@ namespace osu.Game.Overlays
                         Colour = OsuColour.Gray(0.05f),
                         Alpha = 1,
                     },
-                    SectionsContainer = new SettingsSectionsContainer
+                    loading = new LoadingLayer
+                    {
+                        State = { Value = Visibility.Visible }
+                    }
+                }
+            };
+
+            Add(SectionsContainer = new SettingsSectionsContainer
             {
                 Masking = true,
                 RelativeSizeAxes = Axes.Both,
@@ -103,52 +117,24 @@ namespace osu.Game.Overlays
                         Bottom = 20
                     },
                 },
-                        Footer = CreateFooter()
-                    },
-                }
-            };
+                Footer = CreateFooter().With(f => f.Alpha = 0)
+            });
 
             if (showSidebar)
             {
                 AddInternal(Sidebar = new Sidebar { Width = sidebar_width });
-
-                SectionsContainer.SelectedSection.ValueChanged += section =>
-                {
-                    selectedSidebarButton.Selected = false;
-                    selectedSidebarButton = Sidebar.Children.Single(b => b.Section == section.NewValue);
-                    selectedSidebarButton.Selected = true;
-                };
             }
 
-            searchTextBox.Current.ValueChanged += term => SectionsContainer.SearchContainer.SearchTerm = term.NewValue;
-
             CreateSections()?.ForEach(AddSection);
         }
 
         protected void AddSection(SettingsSection section)
         {
-            SectionsContainer.Add(section);
+            if (IsLoaded)
+                // just to keep things simple. can be accommodated for if we ever need it.
+                throw new InvalidOperationException("All sections must be added before the panel is loaded.");
 
-            if (Sidebar != null)
-            {
-                var button = new SidebarButton
-                {
-                    Section = section,
-                    Action = () =>
-                    {
-                        SectionsContainer.ScrollTo(section);
-                        Sidebar.State = ExpandedState.Contracted;
-                    },
-                };
-
-                Sidebar.Add(button);
-
-                if (selectedSidebarButton == null)
-                {
-                    selectedSidebarButton = Sidebar.Children.First();
-                    selectedSidebarButton.Selected = true;
-                }
-            }
+            loadableSections.Add(section);
         }
 
         protected virtual Drawable CreateHeader() => new Container();
@@ -161,6 +147,12 @@ namespace osu.Game.Overlays
 
             ContentContainer.MoveToX(ExpandedPosition, TRANSITION_LENGTH, Easing.OutQuint);
 
+            // delay load enough to ensure it doesn't overlap with the initial animation.
+            // this is done as there is still a brief stutter during load completion which is more visible if the transition is in progress.
+            // the eventual goal would be to remove the need for this by splitting up load into smaller work pieces, or fixing the remaining
+            // load complete overheads.
+            Scheduler.AddDelayed(loadSections, TRANSITION_LENGTH / 3);
+
             Sidebar?.MoveToX(0, TRANSITION_LENGTH, Easing.OutQuint);
             this.FadeTo(1, TRANSITION_LENGTH, Easing.OutQuint);
 
@@ -199,6 +191,78 @@ namespace osu.Game.Overlays
             Padding = new MarginPadding { Top = GetToolbarHeight?.Invoke() ?? 0 };
         }
 
+        private const double fade_in_duration = 1000;
+
+        private void loadSections()
+        {
+            if (sectionsLoadingTask != null)
+                return;
+
+            sectionsLoadingTask = LoadComponentsAsync(loadableSections, sections =>
+            {
+                SectionsContainer.AddRange(sections);
+                SectionsContainer.Footer.FadeInFromZero(fade_in_duration, Easing.OutQuint);
+                SectionsContainer.SearchContainer.FadeInFromZero(fade_in_duration, Easing.OutQuint);
+
+                loading.Hide();
+
+                searchTextBox.Current.BindValueChanged(term => SectionsContainer.SearchContainer.SearchTerm = term.NewValue, true);
+                searchTextBox.TakeFocus();
+
+                loadSidebarButtons();
+            });
+        }
+
+        private void loadSidebarButtons()
+        {
+            if (Sidebar == null)
+                return;
+
+            LoadComponentsAsync(createSidebarButtons(), buttons =>
+            {
+                float delay = 0;
+
+                foreach (var button in buttons)
+                {
+                    Sidebar.Add(button);
+
+                    button.FadeOut()
+                          .Delay(delay)
+                          .FadeInFromZero(fade_in_duration, Easing.OutQuint);
+
+                    delay += 40;
+                }
+
+                SectionsContainer.SelectedSection.BindValueChanged(section =>
+                {
+                    if (selectedSidebarButton != null)
+                        selectedSidebarButton.Selected = false;
+
+                    selectedSidebarButton = Sidebar.Children.Single(b => b.Section == section.NewValue);
+                    selectedSidebarButton.Selected = true;
+                }, true);
+            });
+        }
+
+        private IEnumerable<SidebarButton> createSidebarButtons()
+        {
+            foreach (var section in SectionsContainer)
+            {
+                yield return new SidebarButton
+                {
+                    Section = section,
+                    Action = () =>
+                    {
+                        if (!SectionsContainer.IsLoaded)
+                            return;
+
+                        SectionsContainer.ScrollTo(section);
+                        Sidebar.State = ExpandedState.Contracted;
+                    },
+                };
+            }
+        }
+
         private class NonMaskedContent : Container<Drawable>
         {
             // masking breaks the pan-out transform with nested sub-settings panels.

osu.Game/Performance/HighPerformanceSession.cs

@@ -4,6 +4,7 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Game.Screens.Play;
 
 namespace osu.Game.Performance
 {
@@ -12,9 +13,9 @@ namespace osu.Game.Performance
         private readonly IBindable<bool> localUserPlaying = new Bindable<bool>();
 
         [BackgroundDependencyLoader]
-        private void load(OsuGame game)
+        private void load(ILocalUserPlayInfo localUserInfo)
         {
-            localUserPlaying.BindTo(game.LocalUserPlaying);
+            localUserPlaying.BindTo(localUserInfo.IsPlaying);
         }
 
         protected override void LoadComplete()

osu.Game/Rulesets/Difficulty/Skills/StrainDecaySkill.cs

@@ -0,0 +1,54 @@
+// 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.Rulesets.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Mods;
+
+namespace osu.Game.Rulesets.Difficulty.Skills
+{
+    /// <summary>
+    /// Used to processes strain values of <see cref="DifficultyHitObject"/>s, keep track of strain levels caused by the processed objects
+    /// and to calculate a final difficulty value representing the difficulty of hitting all the processed objects.
+    /// </summary>
+    public abstract class StrainDecaySkill : StrainSkill
+    {
+        /// <summary>
+        /// Strain values are multiplied by this number for the given skill. Used to balance the value of different skills between each other.
+        /// </summary>
+        protected abstract double SkillMultiplier { get; }
+
+        /// <summary>
+        /// Determines how quickly strain decays for the given skill.
+        /// For example a value of 0.15 indicates that strain decays to 15% of its original value in one second.
+        /// </summary>
+        protected abstract double StrainDecayBase { get; }
+
+        /// <summary>
+        /// The current strain level.
+        /// </summary>
+        protected double CurrentStrain { get; private set; } = 1;
+
+        protected StrainDecaySkill(Mod[] mods)
+            : base(mods)
+        {
+        }
+
+        protected override double CalculateInitialStrain(double time) => CurrentStrain * strainDecay(time - Previous[0].StartTime);
+
+        protected override double StrainValueAt(DifficultyHitObject current)
+        {
+            CurrentStrain *= strainDecay(current.DeltaTime);
+            CurrentStrain += StrainValueOf(current) * SkillMultiplier;
+
+            return CurrentStrain;
+        }
+
+        /// <summary>
+        /// Calculates the strain value of a <see cref="DifficultyHitObject"/>. This value is affected by previously processed objects.
+        /// </summary>
+        protected abstract double StrainValueOf(DifficultyHitObject current);
+
+        private double strainDecay(double ms) => Math.Pow(StrainDecayBase, ms / 1000);
+    }
+}

osu.Game/Rulesets/Difficulty/Skills/StrainSkill.cs

@@ -15,27 +15,11 @@ namespace osu.Game.Rulesets.Difficulty.Skills
     /// </summary>
     public abstract class StrainSkill : Skill
     {
-        /// <summary>
-        /// Strain values are multiplied by this number for the given skill. Used to balance the value of different skills between each other.
-        /// </summary>
-        protected abstract double SkillMultiplier { get; }
-
-        /// <summary>
-        /// Determines how quickly strain decays for the given skill.
-        /// For example a value of 0.15 indicates that strain decays to 15% of its original value in one second.
-        /// </summary>
-        protected abstract double StrainDecayBase { get; }
-
         /// <summary>
         /// The weight by which each strain value decays.
         /// </summary>
         protected virtual double DecayWeight => 0.9;
 
-        /// <summary>
-        /// The current strain level.
-        /// </summary>
-        protected double CurrentStrain { get; private set; } = 1;
-
         /// <summary>
         /// The length of each strain section.
         /// </summary>
@@ -52,6 +36,11 @@ namespace osu.Game.Rulesets.Difficulty.Skills
         {
         }
 
+        /// <summary>
+        /// Returns the strain value at <see cref="DifficultyHitObject"/>. This value is calculated with or without respect to previous objects.
+        /// </summary>
+        protected abstract double StrainValueAt(DifficultyHitObject current);
+
         /// <summary>
         /// Process a <see cref="DifficultyHitObject"/> and update current strain values accordingly.
         /// </summary>
@@ -68,10 +57,7 @@ namespace osu.Game.Rulesets.Difficulty.Skills
                 currentSectionEnd += SectionLength;
             }
 
-            CurrentStrain *= strainDecay(current.DeltaTime);
-            CurrentStrain += StrainValueOf(current) * SkillMultiplier;
-
-            currentSectionPeak = Math.Max(CurrentStrain, currentSectionPeak);
+            currentSectionPeak = Math.Max(StrainValueAt(current), currentSectionPeak);
         }
 
         /// <summary>
@@ -88,9 +74,9 @@ namespace osu.Game.Rulesets.Difficulty.Skills
         /// <param name="time">The beginning of the new section in milliseconds.</param>
         private void startNewSectionFrom(double time)
         {
-            // The maximum strain of the new section is not zero by default, strain decays as usual regardless of section boundaries.
+            // The maximum strain of the new section is not zero by default
             // This means we need to capture the strain level at the beginning of the new section, and use that as the initial peak level.
-            currentSectionPeak = GetPeakStrain(time);
+            currentSectionPeak = CalculateInitialStrain(time);
         }
 
         /// <summary>
@@ -98,7 +84,7 @@ namespace osu.Game.Rulesets.Difficulty.Skills
         /// </summary>
         /// <param name="time">The time to retrieve the peak strain at.</param>
         /// <returns>The peak strain.</returns>
-        protected virtual double GetPeakStrain(double time) => CurrentStrain * strainDecay(time - Previous[0].StartTime);
+        protected abstract double CalculateInitialStrain(double time);
 
         /// <summary>
         /// Returns a live enumerable of the peak strains for each <see cref="SectionLength"/> section of the beatmap,
@@ -124,12 +110,5 @@ namespace osu.Game.Rulesets.Difficulty.Skills
 
             return difficulty;
         }
-
-        /// <summary>
-        /// Calculates the strain value of a <see cref="DifficultyHitObject"/>. This value is affected by previously processed objects.
-        /// </summary>
-        protected abstract double StrainValueOf(DifficultyHitObject current);
-
-        private double strainDecay(double ms) => Math.Pow(StrainDecayBase, ms / 1000);
     }
 }

osu.Game/Rulesets/Mods/DifficultyAdjustSettingsControl.cs

@@ -41,7 +41,7 @@ namespace osu.Game.Rulesets.Mods
             {
                 // Intercept and extract the internal number bindable from DifficultyBindable.
                 // This will provide bounds and precision specifications for the slider bar.
-                difficultyBindable = ((DifficultyBindable)value).GetBoundCopy();
+                difficultyBindable = (DifficultyBindable)value.GetBoundCopy();
                 sliderDisplayCurrent.BindTo(difficultyBindable.CurrentNumber);
 
                 base.Current = difficultyBindable;

osu.Game/Rulesets/Mods/DifficultyBindable.cs

@@ -128,6 +128,6 @@ namespace osu.Game.Rulesets.Mods
             ExtendedLimits.UnbindFrom(otherDifficultyBindable.ExtendedLimits);
         }
 
-        public new DifficultyBindable GetBoundCopy() => new DifficultyBindable { BindTarget = this };
+        protected override Bindable<float?> CreateInstance() => new DifficultyBindable();
     }
 }

osu.Game/Rulesets/Mods/Mod.cs

@@ -129,6 +129,17 @@ namespace osu.Game.Rulesets.Mods
         [JsonIgnore]
         public virtual Type[] IncompatibleMods => Array.Empty<Type>();
 
+        private IReadOnlyList<IBindable> settingsBacking;
+
+        /// <summary>
+        /// A list of the all <see cref="IBindable"/> settings within this mod.
+        /// </summary>
+        internal IReadOnlyList<IBindable> Settings =>
+            settingsBacking ??= this.GetSettingsSourceProperties()
+                                    .Select(p => p.Item2.GetValue(this))
+                                    .Cast<IBindable>()
+                                    .ToList();
+
         /// <summary>
         /// Creates a copy of this <see cref="Mod"/> initialised to a default state.
         /// </summary>
@@ -191,15 +202,39 @@ namespace osu.Game.Rulesets.Mods
             if (ReferenceEquals(this, other)) return true;
 
             return GetType() == other.GetType() &&
-                   this.GetSettingsSourceProperties().All(pair =>
-                       EqualityComparer<object>.Default.Equals(
-                           ModUtils.GetSettingUnderlyingValue(pair.Item2.GetValue(this)),
-                           ModUtils.GetSettingUnderlyingValue(pair.Item2.GetValue(other))));
+                   Settings.SequenceEqual(other.Settings, ModSettingsEqualityComparer.Default);
+        }
+
+        public override int GetHashCode()
+        {
+            var hashCode = new HashCode();
+
+            hashCode.Add(GetType());
+
+            foreach (var setting in Settings)
+                hashCode.Add(ModUtils.GetSettingUnderlyingValue(setting));
+
+            return hashCode.ToHashCode();
         }
 
         /// <summary>
         /// Reset all custom settings for this mod back to their defaults.
         /// </summary>
         public virtual void ResetSettingsToDefaults() => CopyFrom((Mod)Activator.CreateInstance(GetType()));
+
+        private class ModSettingsEqualityComparer : IEqualityComparer<IBindable>
+        {
+            public static ModSettingsEqualityComparer Default { get; } = new ModSettingsEqualityComparer();
+
+            public bool Equals(IBindable x, IBindable y)
+            {
+                object xValue = x == null ? null : ModUtils.GetSettingUnderlyingValue(x);
+                object yValue = y == null ? null : ModUtils.GetSettingUnderlyingValue(y);
+
+                return EqualityComparer<object>.Default.Equals(xValue, yValue);
+            }
+
+            public int GetHashCode(IBindable obj) => ModUtils.GetSettingUnderlyingValue(obj).GetHashCode();
+        }
     }
 }

osu.Game/Screens/Edit/BindableBeatDivisor.cs

@@ -41,6 +41,8 @@ namespace osu.Game.Screens.Edit
         protected override int DefaultMaxValue => VALID_DIVISORS.Last();
         protected override int DefaultPrecision => 1;
 
+        protected override Bindable<int> CreateInstance() => new BindableBeatDivisor();
+
         /// <summary>
         /// Retrieves the appropriate colour for a beat divisor.
         /// </summary>

osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs

@@ -166,14 +166,9 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
             }
 
             if (IsSelected)
-            {
                 border.Show();
-                colour = colour.Lighten(0.3f);
-            }
             else
-            {
                 border.Hide();
-            }
 
             if (Item is IHasDuration duration && duration.Duration > 0)
                 circle.Colour = ColourInfo.GradientHorizontal(colour, colour.Lighten(0.4f));
@@ -212,14 +207,9 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 
             for (int i = 0; i < repeats.RepeatCount; i++)
             {
-                repeatsContainer.Add(new Circle
+                repeatsContainer.Add(new Tick
                 {
-                    Size = new Vector2(circle_size / 3),
-                    Alpha = 0.2f,
-                    Anchor = Anchor.CentreLeft,
-                    Origin = Anchor.Centre,
-                    RelativePositionAxes = Axes.X,
-                    X = (float)(i + 1) / (repeats.RepeatCount + 1),
+                    X = (float)(i + 1) / (repeats.RepeatCount + 1)
                 });
             }
         }
@@ -233,6 +223,17 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 
         public override Vector2 ScreenSpaceSelectionPoint => ScreenSpaceDrawQuad.TopLeft;
 
+        private class Tick : Circle
+        {
+            public Tick()
+            {
+                Size = new Vector2(circle_size / 4);
+                Anchor = Anchor.CentreLeft;
+                Origin = Anchor.Centre;
+                RelativePositionAxes = Axes.X;
+            }
+        }
+
         public class DragArea : Circle
         {
             private readonly HitObject hitObject;
@@ -304,20 +305,15 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 
             private void updateState()
             {
-                if (hasMouseDown)
-                {
-                    this.ScaleTo(0.7f, 200, Easing.OutQuint);
-                }
-                else if (IsHovered)
-                {
-                    this.ScaleTo(0.8f, 200, Easing.OutQuint);
-                }
-                else
-                {
-                    this.ScaleTo(0.6f, 200, Easing.OutQuint);
-                }
+                float scale = 0.5f;
 
-                this.FadeTo(IsHovered || hasMouseDown ? 0.8f : 0.2f, 200, Easing.OutQuint);
+                if (hasMouseDown)
+                    scale = 0.6f;
+                else if (IsHovered)
+                    scale = 0.7f;
+
+                this.ScaleTo(scale, 200, Easing.OutQuint);
+                this.FadeTo(IsHovered || hasMouseDown ? 1f : 0.9f, 200, Easing.OutQuint);
             }
 
             [Resolved]

osu.Game/Screens/Edit/EditorClock.cs

@@ -150,8 +150,6 @@ namespace osu.Game.Screens.Edit
             if (seekTime < timingPoint.Time && timingPoint != ControlPointInfo.TimingPoints.First())
                 seekTime = timingPoint.Time;
 
-            // Ensure the sought point is within the boundaries
-            seekTime = Math.Clamp(seekTime, 0, TrackLength);
             SeekSmoothlyTo(seekTime);
         }
 
@@ -190,6 +188,9 @@ namespace osu.Game.Screens.Edit
             seekingOrStopped.Value = IsSeeking = true;
 
             ClearTransforms();
+
+            // Ensure the sought point is within the boundaries
+            position = Math.Clamp(position, 0, TrackLength);
             return underlyingClock.Seek(position);
         }
 
@@ -288,7 +289,7 @@ namespace osu.Game.Screens.Edit
         }
 
         private void transformSeekTo(double seek, double duration = 0, Easing easing = Easing.None)
-            => this.TransformTo(this.PopulateTransform(new TransformSeek(), seek, duration, easing));
+            => this.TransformTo(this.PopulateTransform(new TransformSeek(), Math.Clamp(seek, 0, TrackLength), duration, easing));
 
         private double currentTime
         {

osu.Game/Screens/OnlinePlay/Components/ListingPollingComponent.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.Linq;
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -14,8 +15,10 @@ namespace osu.Game.Screens.OnlinePlay.Components
     /// </summary>
     public class ListingPollingComponent : RoomPollingComponent
     {
-        [Resolved]
-        private Bindable<FilterCriteria> currentFilter { get; set; }
+        public IBindable<bool> InitialRoomsReceived => initialRoomsReceived;
+        private readonly Bindable<bool> initialRoomsReceived = new Bindable<bool>();
+
+        public readonly Bindable<FilterCriteria> Filter = new Bindable<FilterCriteria>();
 
         [Resolved]
         private Bindable<Room> selectedRoom { get; set; }
@@ -23,9 +26,11 @@ namespace osu.Game.Screens.OnlinePlay.Components
         [BackgroundDependencyLoader]
         private void load()
         {
-            currentFilter.BindValueChanged(_ =>
+            Filter.BindValueChanged(_ =>
             {
-                NotifyRoomsReceived(null);
+                RoomManager.ClearRooms();
+                initialRoomsReceived.Value = false;
+
                 if (IsLoaded)
                     PollImmediately();
             });
@@ -38,24 +43,26 @@ namespace osu.Game.Screens.OnlinePlay.Components
             if (!API.IsLoggedIn)
                 return base.Poll();
 
+            if (Filter.Value == null)
+                return base.Poll();
+
             var tcs = new TaskCompletionSource<bool>();
 
             pollReq?.Cancel();
-            pollReq = new GetRoomsRequest(currentFilter.Value.Status, currentFilter.Value.Category);
+            pollReq = new GetRoomsRequest(Filter.Value.Status, Filter.Value.Category);
 
             pollReq.Success += result =>
             {
-                for (int i = 0; i < result.Count; i++)
+                foreach (var existing in RoomManager.Rooms.ToArray())
                 {
-                    if (result[i].RoomID.Value == selectedRoom.Value?.RoomID.Value)
-                    {
-                        // The listing request always has less information than the opened room, so don't include it.
-                        result[i] = selectedRoom.Value;
-                        break;
-                    }
+                    if (result.All(r => r.RoomID.Value != existing.RoomID.Value))
+                        RoomManager.RemoveRoom(existing);
                 }
 
-                NotifyRoomsReceived(result);
+                foreach (var incoming in result)
+                    RoomManager.AddOrUpdateRoom(incoming);
+
+                initialRoomsReceived.Value = true;
                 tcs.SetResult(true);
             };
 

osu.Game/Screens/OnlinePlay/Components/RoomManager.cs

@@ -8,7 +8,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.Logging;
 using osu.Game.Beatmaps;
 using osu.Game.Online.API;
@@ -17,15 +16,12 @@ using osu.Game.Rulesets;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
-    public abstract class RoomManager : CompositeDrawable, IRoomManager
+    public class RoomManager : Component, IRoomManager
     {
         public event Action RoomsUpdated;
 
         private readonly BindableList<Room> rooms = new BindableList<Room>();
 
-        public IBindable<bool> InitialRoomsReceived => initialRoomsReceived;
-        private readonly Bindable<bool> initialRoomsReceived = new Bindable<bool>();
-
         public IBindableList<Room> Rooms => rooms;
 
         protected IBindable<Room> JoinedRoom => joinedRoom;
@@ -40,15 +36,9 @@ namespace osu.Game.Screens.OnlinePlay.Components
         [Resolved]
         private IAPIProvider api { get; set; }
 
-        protected RoomManager()
+        public RoomManager()
         {
             RelativeSizeAxes = Axes.Both;
-
-            InternalChildren = CreatePollingComponents().Select(p =>
-            {
-                p.RoomsReceived = onRoomsReceived;
-                return p;
-            }).ToList();
         }
 
         protected override void Dispose(bool isDisposing)
@@ -67,10 +57,10 @@ namespace osu.Game.Screens.OnlinePlay.Components
             {
                 joinedRoom.Value = room;
 
-                update(room, result);
-                addRoom(room);
+                AddOrUpdateRoom(result);
+                room.CopyFrom(result); // Also copy back to the source model, since this is likely to have been stored elsewhere.
 
-                RoomsUpdated?.Invoke();
+                // The server may not contain all properties (such as password), so invoke success with the given room.
                 onSuccess?.Invoke(room);
             };
 
@@ -118,36 +108,25 @@ namespace osu.Game.Screens.OnlinePlay.Components
 
         private readonly HashSet<long> ignoredRooms = new HashSet<long>();
 
-        private void onRoomsReceived(List<Room> received)
+        public void AddOrUpdateRoom(Room room)
         {
-            if (received == null)
-            {
-                ClearRooms();
-                return;
-            }
-
-            // Remove past matches
-            foreach (var r in rooms.ToList())
-            {
-                if (received.All(e => e.RoomID.Value != r.RoomID.Value))
-                    rooms.Remove(r);
-            }
-
-            for (int i = 0; i < received.Count; i++)
-            {
-                var room = received[i];
-
             Debug.Assert(room.RoomID.Value != null);
 
             if (ignoredRooms.Contains(room.RoomID.Value.Value))
-                    continue;
+                return;
 
-                room.Position.Value = i;
+            room.Position.Value = -room.RoomID.Value.Value;
 
             try
             {
-                    update(room, room);
-                    addRoom(room);
+                foreach (var pi in room.Playlist)
+                    pi.MapObjects(beatmaps, rulesets);
+
+                var existing = rooms.FirstOrDefault(e => e.RoomID.Value == room.RoomID.Value);
+                if (existing == null)
+                    rooms.Add(room);
+                else
+                    existing.CopyFrom(room);
             }
             catch (Exception ex)
             {
@@ -156,46 +135,22 @@ namespace osu.Game.Screens.OnlinePlay.Components
                 ignoredRooms.Add(room.RoomID.Value.Value);
                 rooms.Remove(room);
             }
+
+            notifyRoomsUpdated();
         }
 
-            RoomsUpdated?.Invoke();
-            initialRoomsReceived.Value = true;
+        public void RemoveRoom(Room room)
+        {
+            rooms.Remove(room);
+            notifyRoomsUpdated();
         }
 
-        protected void RemoveRoom(Room room) => rooms.Remove(room);
-
-        protected void ClearRooms()
+        public void ClearRooms()
         {
             rooms.Clear();
-            initialRoomsReceived.Value = false;
+            notifyRoomsUpdated();
         }
 
-        /// <summary>
-        /// Updates a local <see cref="Room"/> with a remote copy.
-        /// </summary>
-        /// <param name="local">The local <see cref="Room"/> to update.</param>
-        /// <param name="remote">The remote <see cref="Room"/> to update with.</param>
-        private void update(Room local, Room remote)
-        {
-            foreach (var pi in remote.Playlist)
-                pi.MapObjects(beatmaps, rulesets);
-
-            local.CopyFrom(remote);
-        }
-
-        /// <summary>
-        /// Adds a <see cref="Room"/> to the list of available rooms.
-        /// </summary>
-        /// <param name="room">The <see cref="Room"/> to add.</param>
-        private void addRoom(Room room)
-        {
-            var existing = rooms.FirstOrDefault(e => e.RoomID.Value == room.RoomID.Value);
-            if (existing == null)
-                rooms.Add(room);
-            else
-                existing.CopyFrom(room);
-        }
-
-        protected abstract IEnumerable<RoomPollingComponent> CreatePollingComponents();
+        private void notifyRoomsUpdated() => Scheduler.AddOnce(() => RoomsUpdated?.Invoke());
     }
 }

osu.Game/Screens/OnlinePlay/Components/RoomPollingComponent.cs

@@ -1,29 +1,18 @@
 // 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 osu.Framework.Allocation;
 using osu.Game.Online;
 using osu.Game.Online.API;
-using osu.Game.Online.Rooms;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
     public abstract class RoomPollingComponent : PollingComponent
     {
-        /// <summary>
-        /// Invoked when any <see cref="Room"/>s have been received from the API.
-        /// <para>
-        /// Any <see cref="Room"/>s present locally but not returned by this event are to be removed from display.
-        /// If null, the display of local rooms is reset to an initial state.
-        /// </para>
-        /// </summary>
-        public Action<List<Room>> RoomsReceived;
-
         [Resolved]
         protected IAPIProvider API { get; private set; }
 
-        protected void NotifyRoomsReceived(List<Room> rooms) => RoomsReceived?.Invoke(rooms);
+        [Resolved]
+        protected IRoomManager RoomManager { get; private set; }
     }
 }

osu.Game/Screens/OnlinePlay/Components/SelectionPollingComponent.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.
 
-using System.Collections.Generic;
-using System.Linq;
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -48,17 +46,7 @@ namespace osu.Game.Screens.OnlinePlay.Components
 
             pollReq.Success += result =>
             {
-                // existing rooms need to be ordered by their position because the received of NotifyRoomsReceives expects to be able to sort them based on this order.
-                var rooms = new List<Room>(roomManager.Rooms.OrderBy(r => r.Position.Value));
-
-                int index = rooms.FindIndex(r => r.RoomID.Value == result.RoomID.Value);
-
-                if (index < 0)
-                    return;
-
-                rooms[index] = result;
-
-                NotifyRoomsReceived(rooms);
+                RoomManager.AddOrUpdateRoom(result);
                 tcs.SetResult(true);
             };
 

osu.Game/Screens/OnlinePlay/Components/StarRatingRangeDisplay.cs

@@ -10,8 +10,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics;
-using osu.Game.Screens.Ranking.Expanded;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Components
@@ -64,8 +64,8 @@ namespace osu.Game.Screens.OnlinePlay.Components
                     AutoSizeAxes = Axes.Both,
                     Children = new Drawable[]
                     {
-                        minDisplay = new StarRatingDisplay(default),
-                        maxDisplay = new StarRatingDisplay(default)
+                        minDisplay = new StarRatingDisplay(default, StarRatingDisplaySize.Range),
+                        maxDisplay = new StarRatingDisplay(default, StarRatingDisplaySize.Range)
                     }
                 }
             };

osu.Game/Screens/OnlinePlay/IRoomManager.cs

@@ -18,16 +18,29 @@ namespace osu.Game.Screens.OnlinePlay
         /// </summary>
         event Action RoomsUpdated;
 
-        /// <summary>
-        /// Whether an initial listing of rooms has been received.
-        /// </summary>
-        IBindable<bool> InitialRoomsReceived { get; }
-
         /// <summary>
         /// All the active <see cref="Room"/>s.
         /// </summary>
         IBindableList<Room> Rooms { get; }
 
+        /// <summary>
+        /// Adds a <see cref="Room"/> to this <see cref="IRoomManager"/>.
+        /// If already existing, the local room will be updated with the given one.
+        /// </summary>
+        /// <param name="room">The incoming <see cref="Room"/>.</param>
+        void AddOrUpdateRoom(Room room);
+
+        /// <summary>
+        /// Removes a <see cref="Room"/> from this <see cref="IRoomManager"/>.
+        /// </summary>
+        /// <param name="room">The <see cref="Room"/> to remove.</param>
+        void RemoveRoom(Room room);
+
+        /// <summary>
+        /// Removes all <see cref="Room"/>s from this <see cref="IRoomManager"/>.
+        /// </summary>
+        void ClearRooms();
+
         /// <summary>
         /// Creates a new <see cref="Room"/>.
         /// </summary>

osu.Game/Screens/OnlinePlay/Lounge/Components/DrawableRoom.cs

@@ -1,32 +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 System.Collections.Generic;
-using osu.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Audio;
-using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
-using osu.Framework.Graphics.UserInterface;
-using osu.Framework.Input.Bindings;
-using osu.Framework.Input.Events;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osu.Game.Graphics.UserInterface;
-using osu.Game.Graphics.UserInterfaceV2;
-using osu.Game.Input.Bindings;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Components;
@@ -35,105 +22,26 @@ using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
-    public class DrawableRoom : OsuClickableContainer, IStateful<SelectionState>, IFilterable, IHasContextMenu, IHasPopover, IKeyBindingHandler<GlobalAction>
+    public class DrawableRoom : CompositeDrawable
     {
-        public const float SELECTION_BORDER_WIDTH = 4;
-        private const float corner_radius = 10;
-        private const float transition_duration = 60;
+        protected const float CORNER_RADIUS = 10;
         private const float height = 100;
 
-        public event Action<SelectionState> StateChanged;
-
-        protected override HoverSounds CreateHoverSounds(HoverSampleSet sampleSet) => new HoverSounds();
-
-        private Drawable selectionBox;
-
-        [Resolved(canBeNull: true)]
-        private LoungeSubScreen loungeScreen { get; set; }
+        public readonly Room Room;
 
         [Resolved]
         private BeatmapManager beatmaps { get; set; }
 
-        [Resolved(canBeNull: true)]
-        private Bindable<Room> selectedRoom { get; set; }
-
-        [Resolved(canBeNull: true)]
-        private LoungeSubScreen lounge { get; set; }
-
-        public readonly Room Room;
-
-        private SelectionState state;
-
-        private Sample sampleSelect;
-        private Sample sampleJoin;
-
-        public SelectionState State
-        {
-            get => state;
-            set
-            {
-                if (value == state)
-                    return;
-
-                state = value;
-
-                if (selectionBox != null)
-                {
-                    if (state == SelectionState.Selected)
-                        selectionBox.FadeIn(transition_duration);
-                    else
-                        selectionBox.FadeOut(transition_duration);
-                }
-
-                StateChanged?.Invoke(State);
-            }
-        }
-
-        public IEnumerable<string> FilterTerms => new[] { Room.Name.Value };
-
-        private bool matchingFilter;
-
-        public bool MatchingFilter
-        {
-            get => matchingFilter;
-            set
-            {
-                matchingFilter = value;
-
-                if (!IsLoaded)
-                    return;
-
-                if (matchingFilter)
-                    this.FadeIn(200);
-                else
-                    Hide();
-            }
-        }
-
-        private int numberOfAvatars = 7;
-
-        public int NumberOfAvatars
-        {
-            get => numberOfAvatars;
-            set
-            {
-                numberOfAvatars = value;
-
-                if (recentParticipantsList != null)
-                    recentParticipantsList.NumberOfCircles = value;
-            }
-        }
+        protected Container ButtonsContainer { get; private set; }
 
+        private readonly Bindable<MatchType> roomType = new Bindable<MatchType>();
         private readonly Bindable<RoomCategory> roomCategory = new Bindable<RoomCategory>();
+        private readonly Bindable<bool> hasPassword = new Bindable<bool>();
 
         private RecentParticipantsList recentParticipantsList;
         private RoomSpecialCategoryPill specialCategoryPill;
-
-        public bool FilteringActive { get; set; }
-
         private PasswordProtectedIcon passwordIcon;
-
-        private readonly Bindable<bool> hasPassword = new Bindable<bool>();
+        private EndDateInfo endDateInfo;
 
         public DrawableRoom(Room room)
         {
@@ -143,7 +51,7 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
             Height = height;
 
             Masking = true;
-            CornerRadius = corner_radius + SELECTION_BORDER_WIDTH / 2;
+            CornerRadius = CORNER_RADIUS;
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
@@ -153,9 +61,9 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
         }
 
         [BackgroundDependencyLoader]
-        private void load(OverlayColourProvider colours, AudioManager audio)
+        private void load(OverlayColourProvider colours)
         {
-            Children = new Drawable[]
+            InternalChildren = new[]
             {
                 // This resolves internal 1px gaps due to applying the (parenting) corner radius and masking across multiple filling background sprites.
                 new Box
@@ -163,10 +71,10 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                     RelativeSizeAxes = Axes.Both,
                     Colour = colours.Background5,
                 },
-                new OnlinePlayBackgroundSprite
+                CreateBackground().With(d =>
                 {
-                    RelativeSizeAxes = Axes.Both
-                },
+                    d.RelativeSizeAxes = Axes.Both;
+                }),
                 new Container
                 {
                     Name = @"Room content",
@@ -177,7 +85,7 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                     {
                         RelativeSizeAxes = Axes.Both,
                         Masking = true,
-                        CornerRadius = corner_radius,
+                        CornerRadius = CORNER_RADIUS,
                         Children = new Drawable[]
                         {
                             new GridContainer
@@ -238,10 +146,10 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                                                         Anchor = Anchor.CentreLeft,
                                                         Origin = Anchor.CentreLeft
                                                     },
-                                                    new EndDateInfo
+                                                    endDateInfo = new EndDateInfo
                                                     {
                                                         Anchor = Anchor.CentreLeft,
-                                                        Origin = Anchor.CentreLeft
+                                                        Origin = Anchor.CentreLeft,
                                                     },
                                                 }
                                             },
@@ -289,13 +197,21 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                                 Origin = Anchor.CentreRight,
                                 AutoSizeAxes = Axes.X,
                                 RelativeSizeAxes = Axes.Y,
+                                Spacing = new Vector2(5),
                                 Padding = new MarginPadding
                                 {
                                     Right = 10,
-                                    Vertical = 5
+                                    Vertical = 20,
                                 },
                                 Children = new Drawable[]
                                 {
+                                    ButtonsContainer = new Container
+                                    {
+                                        Anchor = Anchor.CentreRight,
+                                        Origin = Anchor.CentreRight,
+                                        RelativeSizeAxes = Axes.Y,
+                                        AutoSizeAxes = Axes.X
+                                    },
                                     recentParticipantsList = new RecentParticipantsList
                                     {
                                         Anchor = Anchor.CentreRight,
@@ -308,36 +224,6 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                         },
                     },
                 },
-                new StatusColouredContainer(transition_duration)
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Child = selectionBox = new Container
-                    {
-                        RelativeSizeAxes = Axes.Both,
-                        Alpha = state == SelectionState.Selected ? 1 : 0,
-                        Masking = true,
-                        CornerRadius = corner_radius,
-                        BorderThickness = SELECTION_BORDER_WIDTH,
-                        BorderColour = Color4.White,
-                        Child = new Box
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Alpha = 0,
-                            AlwaysPresent = true
-                        }
-                    }
-                },
-            };
-
-            sampleSelect = audio.Samples.Get($@"UI/{HoverSampleSet.Default.GetDescription()}-select");
-            sampleJoin = audio.Samples.Get($@"UI/{HoverSampleSet.Submit.GetDescription()}-select");
-        }
-
-        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
-        {
-            return new CachedModelDependencyContainer<Room>(base.CreateChildDependencies(parent))
-            {
-                Model = { Value = Room }
             };
         }
 
@@ -345,11 +231,6 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
         {
             base.LoadComplete();
 
-            if (matchingFilter)
-                this.FadeInFromZero(transition_duration);
-            else
-                Alpha = 0;
-
             roomCategory.BindTo(Room.Category);
             roomCategory.BindValueChanged(c =>
             {
@@ -359,62 +240,39 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                     specialCategoryPill.Hide();
             }, true);
 
+            roomType.BindTo(Room.Type);
+            roomType.BindValueChanged(t =>
+            {
+                endDateInfo.Alpha = t.NewValue == MatchType.Playlists ? 1 : 0;
+            }, true);
+
             hasPassword.BindTo(Room.HasPassword);
             hasPassword.BindValueChanged(v => passwordIcon.Alpha = v.NewValue ? 1 : 0, true);
         }
 
-        public Popover GetPopover() => new PasswordEntryPopover(Room) { JoinRequested = lounge.Join };
-
-        public MenuItem[] ContextMenuItems => new MenuItem[]
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            new OsuMenuItem("Create copy", MenuItemType.Standard, () =>
+            return new CachedModelDependencyContainer<Room>(base.CreateChildDependencies(parent))
             {
-                lounge?.Open(Room.DeepClone());
-            })
+                Model = { Value = Room }
             };
-
-        public bool OnPressed(GlobalAction action)
-        {
-            if (selectedRoom.Value != Room)
-                return false;
-
-            switch (action)
-            {
-                case GlobalAction.Select:
-                    TriggerClick();
-                    return true;
         }
 
-            return false;
-        }
+        private int numberOfAvatars = 7;
 
-        public void OnReleased(GlobalAction action)
+        public int NumberOfAvatars
         {
-        }
-
-        protected override bool ShouldBeConsideredForInput(Drawable child) => state == SelectionState.Selected || child is HoverSounds;
-
-        protected override bool OnClick(ClickEvent e)
+            get => numberOfAvatars;
+            set
             {
-            if (Room != selectedRoom.Value)
-            {
-                sampleSelect?.Play();
-                selectedRoom.Value = Room;
-                return true;
+                numberOfAvatars = value;
+
+                if (recentParticipantsList != null)
+                    recentParticipantsList.NumberOfCircles = value;
+            }
         }
 
-            if (Room.HasPassword.Value)
-            {
-                sampleJoin?.Play();
-                this.ShowPopover();
-                return true;
-            }
-
-            sampleJoin?.Play();
-            lounge?.Join(Room, null);
-
-            return base.OnClick(e);
-        }
+        protected virtual Drawable CreateBackground() => new OnlinePlayBackgroundSprite();
 
         private class RoomNameText : OsuSpriteText
         {
@@ -500,52 +358,5 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
                 };
             }
         }
-
-        public class PasswordEntryPopover : OsuPopover
-        {
-            private readonly Room room;
-
-            public Action<Room, string> JoinRequested;
-
-            public PasswordEntryPopover(Room room)
-            {
-                this.room = room;
-            }
-
-            private OsuPasswordTextBox passwordTextbox;
-
-            [BackgroundDependencyLoader]
-            private void load()
-            {
-                Child = new FillFlowContainer
-                {
-                    Margin = new MarginPadding(10),
-                    Spacing = new Vector2(5),
-                    AutoSizeAxes = Axes.Both,
-                    Direction = FillDirection.Horizontal,
-                    Children = new Drawable[]
-                    {
-                        passwordTextbox = new OsuPasswordTextBox
-                        {
-                            Width = 200,
-                        },
-                        new TriangleButton
-                        {
-                            Width = 80,
-                            Text = "Join Room",
-                            Action = () => JoinRequested?.Invoke(room, passwordTextbox.Text)
-                        }
-                    }
-                };
-            }
-
-            protected override void LoadComplete()
-            {
-                base.LoadComplete();
-
-                Schedule(() => GetContainingInputManager().ChangeFocus(passwordTextbox));
-                passwordTextbox.OnCommit += (_, __) => JoinRequested?.Invoke(room, passwordTextbox.Text);
-            }
-        }
     }
 }

osu.Game/Screens/OnlinePlay/Lounge/Components/RoomsContainer.cs

@@ -15,7 +15,6 @@ using osu.Framework.Input.Events;
 using osu.Framework.Threading;
 using osu.Game.Extensions;
 using osu.Game.Graphics.Cursor;
-using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Online.Rooms;
 using osuTK;
@@ -26,12 +25,11 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
     {
         private readonly IBindableList<Room> rooms = new BindableList<Room>();
 
-        private readonly FillFlowContainer<DrawableRoom> roomFlow;
+        private readonly FillFlowContainer<DrawableLoungeRoom> roomFlow;
 
         public IReadOnlyList<DrawableRoom> Rooms => roomFlow.FlowingChildren.Cast<DrawableRoom>().ToArray();
 
-        [Resolved(CanBeNull = true)]
-        private Bindable<FilterCriteria> filter { get; set; }
+        public readonly Bindable<FilterCriteria> Filter = new Bindable<FilterCriteria>();
 
         [Resolved]
         private Bindable<Room> selectedRoom { get; set; }
@@ -57,7 +55,7 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
             {
                 RelativeSizeAxes = Axes.X,
                 AutoSizeAxes = Axes.Y,
-                Child = roomFlow = new FillFlowContainer<DrawableRoom>
+                Child = roomFlow = new FillFlowContainer<DrawableLoungeRoom>
                 {
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
@@ -74,18 +72,10 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 
             rooms.BindTo(roomManager.Rooms);
 
-            filter?.BindValueChanged(criteria => Filter(criteria.NewValue));
-
-            selectedRoom.BindValueChanged(selection =>
-            {
-                updateSelection();
-            }, true);
+            Filter?.BindValueChanged(criteria => applyFilterCriteria(criteria.NewValue), true);
         }
 
-        private void updateSelection() =>
-            roomFlow.Children.ForEach(r => r.State = r.Room == selectedRoom.Value ? SelectionState.Selected : SelectionState.NotSelected);
-
-        public void Filter(FilterCriteria criteria)
+        private void applyFilterCriteria(FilterCriteria criteria)
         {
             roomFlow.Children.ForEach(r =>
             {
@@ -123,22 +113,17 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
         {
             foreach (var room in rooms)
             {
-                roomFlow.Add(new DrawableRoom(room));
+                roomFlow.Add(new DrawableLoungeRoom(room));
             }
 
-            Filter(filter?.Value);
-
-            updateSelection();
+            applyFilterCriteria(Filter?.Value);
         }
 
         private void removeRooms(IEnumerable<Room> rooms)
         {
             foreach (var r in rooms)
             {
-                var toRemove = roomFlow.Single(d => d.Room == r);
-                toRemove.Action = null;
-
-                roomFlow.Remove(toRemove);
+                roomFlow.RemoveAll(d => d.Room == r);
 
                 // selection may have a lease due to being in a sub screen.
                 if (!selectedRoom.Disabled)

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

@@ -0,0 +1,226 @@
+// 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 osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Bindings;
+using osu.Framework.Input.Events;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Input.Bindings;
+using osu.Game.Online.Rooms;
+using osu.Game.Screens.OnlinePlay.Components;
+using osu.Game.Screens.OnlinePlay.Lounge.Components;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Screens.OnlinePlay.Lounge
+{
+    /// <summary>
+    /// A <see cref="DrawableRoom"/> with lounge-specific interactions such as selection and hover sounds.
+    /// </summary>
+    public class DrawableLoungeRoom : DrawableRoom, IFilterable, IHasContextMenu, IHasPopover, IKeyBindingHandler<GlobalAction>
+    {
+        private const float transition_duration = 60;
+        private const float selection_border_width = 4;
+
+        [Resolved(canBeNull: true)]
+        private LoungeSubScreen lounge { get; set; }
+
+        [Resolved(canBeNull: true)]
+        private Bindable<Room> selectedRoom { get; set; }
+
+        private Sample sampleSelect;
+        private Sample sampleJoin;
+        private Drawable selectionBox;
+
+        public DrawableLoungeRoom(Room room)
+            : base(room)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            sampleSelect = audio.Samples.Get($@"UI/{HoverSampleSet.Default.GetDescription()}-select");
+            sampleJoin = audio.Samples.Get($@"UI/{HoverSampleSet.Submit.GetDescription()}-select");
+
+            AddRangeInternal(new Drawable[]
+            {
+                new StatusColouredContainer(transition_duration)
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Child = selectionBox = new Container
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Alpha = 0,
+                        Masking = true,
+                        CornerRadius = CORNER_RADIUS,
+                        BorderThickness = selection_border_width,
+                        BorderColour = Color4.White,
+                        Child = new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0,
+                            AlwaysPresent = true
+                        }
+                    }
+                },
+                new HoverSounds()
+            });
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            if (matchingFilter)
+                this.FadeInFromZero(transition_duration);
+            else
+                Alpha = 0;
+
+            selectedRoom.BindValueChanged(updateSelectedRoom, true);
+        }
+
+        private void updateSelectedRoom(ValueChangedEvent<Room> selected)
+        {
+            if (selected.NewValue == Room)
+                selectionBox.FadeIn(transition_duration);
+            else
+                selectionBox.FadeOut(transition_duration);
+        }
+
+        public bool FilteringActive { get; set; }
+
+        public IEnumerable<string> FilterTerms => new[] { Room.Name.Value };
+
+        private bool matchingFilter;
+
+        public bool MatchingFilter
+        {
+            get => matchingFilter;
+            set
+            {
+                matchingFilter = value;
+
+                if (!IsLoaded)
+                    return;
+
+                if (matchingFilter)
+                    this.FadeIn(200);
+                else
+                    Hide();
+            }
+        }
+
+        public Popover GetPopover() => new PasswordEntryPopover(Room) { JoinRequested = lounge.Join };
+
+        public MenuItem[] ContextMenuItems => new MenuItem[]
+        {
+            new OsuMenuItem("Create copy", MenuItemType.Standard, () =>
+            {
+                lounge?.Open(Room.DeepClone());
+            })
+        };
+
+        public bool OnPressed(GlobalAction action)
+        {
+            if (selectedRoom.Value != Room)
+                return false;
+
+            switch (action)
+            {
+                case GlobalAction.Select:
+                    TriggerClick();
+                    return true;
+            }
+
+            return false;
+        }
+
+        public void OnReleased(GlobalAction action)
+        {
+        }
+
+        protected override bool ShouldBeConsideredForInput(Drawable child) => selectedRoom.Value == Room || child is HoverSounds;
+
+        protected override bool OnClick(ClickEvent e)
+        {
+            if (Room != selectedRoom.Value)
+            {
+                sampleSelect?.Play();
+                selectedRoom.Value = Room;
+                return true;
+            }
+
+            if (Room.HasPassword.Value)
+            {
+                sampleJoin?.Play();
+                this.ShowPopover();
+                return true;
+            }
+
+            sampleJoin?.Play();
+            lounge?.Join(Room, null);
+
+            return base.OnClick(e);
+        }
+
+        public class PasswordEntryPopover : OsuPopover
+        {
+            private readonly Room room;
+
+            public Action<Room, string> JoinRequested;
+
+            public PasswordEntryPopover(Room room)
+            {
+                this.room = room;
+            }
+
+            private OsuPasswordTextBox passwordTextbox;
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                Child = new FillFlowContainer
+                {
+                    Margin = new MarginPadding(10),
+                    Spacing = new Vector2(5),
+                    AutoSizeAxes = Axes.Both,
+                    Direction = FillDirection.Horizontal,
+                    Children = new Drawable[]
+                    {
+                        passwordTextbox = new OsuPasswordTextBox
+                        {
+                            Width = 200,
+                        },
+                        new TriangleButton
+                        {
+                            Width = 80,
+                            Text = "Join Room",
+                            Action = () => JoinRequested?.Invoke(room, passwordTextbox.Text)
+                        }
+                    }
+                };
+            }
+
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
+
+                Schedule(() => GetContainingInputManager().ChangeFocus(passwordTextbox));
+                passwordTextbox.OnCommit += (_, __) => JoinRequested?.Invoke(room, passwordTextbox.Text);
+            }
+        }
+    }
+}

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

@@ -13,14 +13,17 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
+using osu.Framework.Logging;
 using osu.Framework.Screens;
 using osu.Framework.Threading;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Input;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
+using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Match;
 using osu.Game.Users;
@@ -42,10 +45,7 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
             AutoSizeAxes = Axes.Both
         };
 
-        private readonly IBindable<bool> initialRoomsReceived = new Bindable<bool>();
-        private readonly IBindable<bool> operationInProgress = new Bindable<bool>();
-
-        private LoadingLayer loadingLayer;
+        protected ListingPollingComponent ListingPollingComponent { get; private set; }
 
         [Resolved]
         private Bindable<Room> selectedRoom { get; set; }
@@ -56,54 +56,70 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
         [Resolved(CanBeNull = true)]
         private OngoingOperationTracker ongoingOperationTracker { get; set; }
 
-        [Resolved(CanBeNull = true)]
-        private Bindable<FilterCriteria> filter { get; set; }
-
         [Resolved]
         private IBindable<RulesetInfo> ruleset { get; set; }
 
         [CanBeNull]
         private IDisposable joiningRoomOperation { get; set; }
 
+        [CanBeNull]
+        private LeasedBindable<Room> selectionLease;
+
+        private readonly Bindable<FilterCriteria> filter = new Bindable<FilterCriteria>(new FilterCriteria());
+        private readonly IBindable<bool> operationInProgress = new Bindable<bool>();
+        private readonly IBindable<bool> isIdle = new BindableBool();
+        private LoadingLayer loadingLayer;
         private RoomsContainer roomsContainer;
         private SearchTextBox searchTextBox;
         private Dropdown<RoomStatusFilter> statusDropdown;
 
-        [CanBeNull]
-        private LeasedBindable<Room> selectionLease;
-
-        [BackgroundDependencyLoader]
-        private void load()
+        [BackgroundDependencyLoader(true)]
+        private void load([CanBeNull] IdleTracker idleTracker)
         {
-            filter ??= new Bindable<FilterCriteria>(new FilterCriteria());
+            const float controls_area_height = 25f;
+
+            if (idleTracker != null)
+                isIdle.BindTo(idleTracker.IsIdle);
 
             OsuScrollContainer scrollContainer;
 
-            InternalChildren = new[]
+            InternalChildren = new Drawable[]
             {
-                loadingLayer = new LoadingLayer(true),
+                ListingPollingComponent = CreatePollingComponent().With(c => c.Filter.BindTarget = filter),
                 new Container
                 {
+                    Name = @"Rooms area",
                     RelativeSizeAxes = Axes.Both,
                     Padding = new MarginPadding
                     {
-                        Left = WaveOverlayContainer.WIDTH_PADDING,
-                        Right = WaveOverlayContainer.WIDTH_PADDING,
+                        Horizontal = WaveOverlayContainer.WIDTH_PADDING,
+                        Top = Header.HEIGHT + controls_area_height + 20,
                     },
-                    Child = new GridContainer
+                    Child = scrollContainer = new OsuScrollContainer
                     {
                         RelativeSizeAxes = Axes.Both,
-                        RowDimensions = new[]
+                        ScrollbarOverlapsContent = false,
+                        Child = roomsContainer = new RoomsContainer
                         {
-                            new Dimension(GridSizeMode.Absolute, Header.HEIGHT),
-                            new Dimension(GridSizeMode.Absolute, 25),
-                            new Dimension(GridSizeMode.Absolute, 20)
+                            Filter = { BindTarget = filter }
+                        }
                     },
-                        Content = new[]
+                },
+                loadingLayer = new LoadingLayer(true),
+                new FillFlowContainer
                 {
-                            new Drawable[]
+                    Name = @"Header area flow",
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding { Horizontal = WaveOverlayContainer.WIDTH_PADDING },
+                    Direction = FillDirection.Vertical,
+                    Children = new Drawable[]
                     {
-                                searchTextBox = new LoungeSearchTextBox
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            Height = Header.HEIGHT,
+                            Child = searchTextBox = new LoungeSearchTextBox
                             {
                                 Anchor = Anchor.CentreRight,
                                 Origin = Anchor.CentreRight,
@@ -111,12 +127,10 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
                                 Width = 0.6f,
                             },
                         },
-                            new Drawable[]
-                            {
                         new Container
                         {
-                                    RelativeSizeAxes = Axes.Both,
-                                    Depth = float.MinValue, // Contained filters should appear over the top of rooms.
+                            RelativeSizeAxes = Axes.X,
+                            Height = controls_area_height,
                             Children = new Drawable[]
                             {
                                 Buttons.WithChild(CreateNewRoomButton().With(d =>
@@ -142,25 +156,6 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
                             }
                         }
                     },
-                            null,
-                            new Drawable[]
-                            {
-                                new Container
-                                {
-                                    RelativeSizeAxes = Axes.Both,
-                                    Children = new Drawable[]
-                                    {
-                                        scrollContainer = new OsuScrollContainer
-                                        {
-                                            RelativeSizeAxes = Axes.Both,
-                                            ScrollbarOverlapsContent = false,
-                                            Child = roomsContainer = new RoomsContainer()
-                                        },
-                                    }
-                                },
-                            }
-                        }
-                    },
                 },
             };
 
@@ -180,21 +175,22 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
             searchTextBox.Current.BindValueChanged(_ => updateFilterDebounced());
             ruleset.BindValueChanged(_ => UpdateFilter());
 
-            initialRoomsReceived.BindTo(RoomManager.InitialRoomsReceived);
-            initialRoomsReceived.BindValueChanged(_ => updateLoadingLayer());
+            isIdle.BindValueChanged(_ => updatePollingRate(this.IsCurrentScreen()), true);
 
             if (ongoingOperationTracker != null)
             {
                 operationInProgress.BindTo(ongoingOperationTracker.InProgress);
-                operationInProgress.BindValueChanged(_ => updateLoadingLayer(), true);
+                operationInProgress.BindValueChanged(_ => updateLoadingLayer());
             }
 
+            ListingPollingComponent.InitialRoomsReceived.BindValueChanged(_ => updateLoadingLayer(), true);
+
             updateFilter();
         }
 
         #region Filtering
 
-        protected void UpdateFilter() => Scheduler.AddOnce(updateFilter);
+        public void UpdateFilter() => Scheduler.AddOnce(updateFilter);
 
         private ScheduledDelegate scheduledFilterUpdate;
 
@@ -235,7 +231,6 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
         public override void OnEntering(IScreen last)
         {
             base.OnEntering(last);
-
             onReturning();
         }
 
@@ -275,11 +270,13 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
 
         private void onReturning()
         {
+            updatePollingRate(true);
             searchTextBox.HoldFocus = true;
         }
 
         private void onLeaving()
         {
+            updatePollingRate(false);
             searchTextBox.HoldFocus = false;
 
             // ensure any password prompt is dismissed.
@@ -327,6 +324,24 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
             this.Push(CreateRoomSubScreen(room));
         }
 
+        private void updateLoadingLayer()
+        {
+            if (operationInProgress.Value || !ListingPollingComponent.InitialRoomsReceived.Value)
+                loadingLayer.Show();
+            else
+                loadingLayer.Hide();
+        }
+
+        private void updatePollingRate(bool isCurrentScreen)
+        {
+            if (!isCurrentScreen)
+                ListingPollingComponent.TimeBetweenPolls.Value = 0;
+            else
+                ListingPollingComponent.TimeBetweenPolls.Value = isIdle.Value ? 120000 : 15000;
+
+            Logger.Log($"Polling adjusted (listing: {ListingPollingComponent.TimeBetweenPolls.Value})");
+        }
+
         protected abstract OsuButton CreateNewRoomButton();
 
         /// <summary>
@@ -337,13 +352,7 @@ namespace osu.Game.Screens.OnlinePlay.Lounge
 
         protected abstract RoomSubScreen CreateRoomSubScreen(Room room);
 
-        private void updateLoadingLayer()
-        {
-            if (operationInProgress.Value || !initialRoomsReceived.Value)
-                loadingLayer.Show();
-            else
-                loadingLayer.Hide();
-        }
+        protected abstract ListingPollingComponent CreatePollingComponent();
 
         private class LoungeSearchTextBox : SearchTextBox
         {

osu.Game/Screens/OnlinePlay/Match/Components/Footer.cs

@@ -1,48 +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 osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
-using osu.Game.Graphics;
-using osu.Game.Screens.OnlinePlay.Playlists;
-using osuTK;
-
-namespace osu.Game.Screens.OnlinePlay.Match.Components
-{
-    public class Footer : CompositeDrawable
-    {
-        public const float HEIGHT = 50;
-
-        public Action OnStart;
-
-        private readonly Drawable background;
-
-        public Footer()
-        {
-            RelativeSizeAxes = Axes.X;
-            Height = HEIGHT;
-
-            InternalChildren = new[]
-            {
-                background = new Box { RelativeSizeAxes = Axes.Both },
-                new PlaylistsReadyButton
-                {
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Size = new Vector2(600, 50),
-                    Action = () => OnStart?.Invoke()
-                }
-            };
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            background.Colour = Color4Extensions.FromHex(@"28242d");
-        }
-    }
-}

osu.Game/Screens/OnlinePlay/Match/Components/Header.cs

@@ -1,79 +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.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Game.Graphics;
-using osu.Game.Graphics.Containers;
-using osu.Game.Graphics.Sprites;
-using osu.Game.Users.Drawables;
-using osuTK;
-
-namespace osu.Game.Screens.OnlinePlay.Match.Components
-{
-    public class Header : OnlinePlayComposite
-    {
-        public const float HEIGHT = 50;
-
-        private UpdateableAvatar avatar;
-        private LinkFlowContainer hostText;
-
-        public Header()
-        {
-            RelativeSizeAxes = Axes.X;
-            Height = HEIGHT;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            InternalChild = new FillFlowContainer
-            {
-                AutoSizeAxes = Axes.Both,
-                Direction = FillDirection.Horizontal,
-                Spacing = new Vector2(10, 0),
-                Children = new Drawable[]
-                {
-                    avatar = new UpdateableAvatar
-                    {
-                        Size = new Vector2(50),
-                        Masking = true,
-                        CornerRadius = 10,
-                    },
-                    new FillFlowContainer
-                    {
-                        AutoSizeAxes = Axes.Both,
-                        Direction = FillDirection.Vertical,
-                        Children = new Drawable[]
-                        {
-                            new OsuSpriteText
-                            {
-                                Font = OsuFont.GetFont(size: 30),
-                                Current = { BindTarget = RoomName }
-                            },
-                            hostText = new LinkFlowContainer(s => s.Font = OsuFont.GetFont(size: 20))
-                            {
-                                AutoSizeAxes = Axes.Both,
-                                Direction = FillDirection.Horizontal,
-                            }
-                        }
-                    }
-                }
-            };
-
-            Host.BindValueChanged(host =>
-            {
-                avatar.User = host.NewValue;
-
-                hostText.Clear();
-
-                if (host.NewValue != null)
-                {
-                    hostText.AddText("hosted by ");
-                    hostText.AddUserLink(host.NewValue, s => s.Font = s.Font.With(weight: FontWeight.SemiBold));
-                }
-            }, true);
-        }
-    }
-}

osu.Game/Screens/OnlinePlay/Match/Components/MatchChatDisplay.cs

@@ -19,9 +19,12 @@ namespace osu.Game.Screens.OnlinePlay.Match.Components
         [Resolved(CanBeNull = true)]
         private ChannelManager channelManager { get; set; }
 
-        public MatchChatDisplay()
+        private readonly bool leaveChannelOnDispose;
+
+        public MatchChatDisplay(bool leaveChannelOnDispose = true)
             : base(true)
         {
+            this.leaveChannelOnDispose = leaveChannelOnDispose;
         }
 
         protected override void LoadComplete()
@@ -42,6 +45,8 @@ namespace osu.Game.Screens.OnlinePlay.Match.Components
         protected override void Dispose(bool isDisposing)
         {
             base.Dispose(isDisposing);
+
+            if (leaveChannelOnDispose)
                 channelManager?.LeaveChannel(Channel.Value);
         }
     }

osu.Game/Screens/OnlinePlay/Match/Components/RoomSettingsOverlay.cs

@@ -14,10 +14,10 @@ using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Match.Components
 {
-    public abstract class MatchSettingsOverlay : FocusedOverlayContainer, IKeyBindingHandler<GlobalAction>
+    public abstract class RoomSettingsOverlay : FocusedOverlayContainer, IKeyBindingHandler<GlobalAction>
     {
         protected const float TRANSITION_DURATION = 350;
-        protected const float FIELD_PADDING = 45;
+        protected const float FIELD_PADDING = 25;
 
         protected OnlinePlayComposite Settings { get; set; }
 
@@ -27,11 +27,16 @@ namespace osu.Game.Screens.OnlinePlay.Match.Components
 
         protected abstract bool IsLoading { get; }
 
+        protected RoomSettingsOverlay()
+        {
+            RelativeSizeAxes = Axes.Both;
+            Masking = true;
+            CornerRadius = 10;
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {
-            Masking = true;
-
             Add(Settings = CreateSettings());
         }
 
@@ -41,12 +46,16 @@ namespace osu.Game.Screens.OnlinePlay.Match.Components
 
         protected override void PopIn()
         {
+            base.PopIn();
             Settings.MoveToY(0, TRANSITION_DURATION, Easing.OutQuint);
+            Settings.FadeIn(TRANSITION_DURATION / 2);
         }
 
         protected override void PopOut()
         {
+            base.PopOut();
             Settings.MoveToY(-1, TRANSITION_DURATION, Easing.InSine);
+            Settings.Delay(TRANSITION_DURATION / 2).FadeOut(TRANSITION_DURATION / 2);
         }
 
         public bool OnPressed(GlobalAction action)

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

@@ -0,0 +1,64 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Game.Online.API;
+using osu.Game.Online.Rooms;
+using osu.Game.Screens.OnlinePlay.Lounge.Components;
+using osu.Game.Screens.OnlinePlay.Match.Components;
+using osu.Game.Users;
+using osuTK;
+
+namespace osu.Game.Screens.OnlinePlay.Match
+{
+    public class DrawableMatchRoom : DrawableRoom
+    {
+        public Action OnEdit;
+
+        [Resolved]
+        private IAPIProvider api { get; set; }
+
+        private readonly IBindable<User> host = new Bindable<User>();
+        private readonly bool allowEdit;
+
+        [CanBeNull]
+        private Drawable editButton;
+
+        public DrawableMatchRoom(Room room, bool allowEdit = true)
+            : base(room)
+        {
+            this.allowEdit = allowEdit;
+
+            host.BindTo(room.Host);
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            if (allowEdit)
+            {
+                ButtonsContainer.Add(editButton = new PurpleTriangleButton
+                {
+                    RelativeSizeAxes = Axes.Y,
+                    Size = new Vector2(100, 1),
+                    Text = "Edit",
+                    Action = () => OnEdit?.Invoke()
+                });
+            }
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            if (editButton != null)
+                host.BindValueChanged(h => editButton.Alpha = h.NewValue?.Equals(api.LocalUser.Value) == true ? 1 : 0, true);
+        }
+
+        protected override Drawable CreateBackground() => new RoomBackgroundSprite();
+    }
+}

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

@@ -0,0 +1,33 @@
+// 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.Game.Beatmaps.Drawables;
+
+namespace osu.Game.Screens.OnlinePlay.Match
+{
+    public class RoomBackgroundSprite : RoomSubScreenComposite
+    {
+        protected readonly BeatmapSetCoverType BeatmapSetCoverType;
+        private UpdateableBeatmapBackgroundSprite sprite;
+
+        public RoomBackgroundSprite(BeatmapSetCoverType beatmapSetCoverType = BeatmapSetCoverType.Cover)
+        {
+            BeatmapSetCoverType = beatmapSetCoverType;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            InternalChild = sprite = new UpdateableBeatmapBackgroundSprite(BeatmapSetCoverType) { RelativeSizeAxes = Axes.Both };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            SelectedItem.BindValueChanged(item => sprite.Beatmap.Value = item.NewValue?.Beatmap.Value, true);
+        }
+    }
+}

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

@@ -31,8 +31,6 @@ namespace osu.Game.Screens.OnlinePlay.Match
 
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
-        private readonly ModSelectOverlay userModsSelectOverlay;
-
         /// <summary>
         /// A container that provides controls for selection of user mods.
         /// This will be shown/hidden automatically when applicable.
@@ -46,6 +44,8 @@ namespace osu.Game.Screens.OnlinePlay.Match
         /// </summary>
         protected readonly Bindable<IReadOnlyList<Mod>> UserMods = new Bindable<IReadOnlyList<Mod>>(Array.Empty<Mod>());
 
+        protected readonly IBindable<long?> RoomId = new Bindable<long?>();
+
         [Resolved]
         private MusicController music { get; set; }
 
@@ -58,55 +58,184 @@ namespace osu.Game.Screens.OnlinePlay.Match
         private IBindable<WeakReference<BeatmapSetInfo>> managerUpdated;
 
         [Cached]
-        protected OnlinePlayBeatmapAvailabilityTracker BeatmapAvailabilityTracker { get; }
+        protected OnlinePlayBeatmapAvailabilityTracker BeatmapAvailabilityTracker { get; private set; }
 
         protected IBindable<BeatmapAvailability> BeatmapAvailability => BeatmapAvailabilityTracker.Availability;
 
-        protected RoomSubScreen()
+        public readonly Room Room;
+        private readonly bool allowEdit;
+
+        private ModSelectOverlay userModsSelectOverlay;
+        private RoomSettingsOverlay settingsOverlay;
+        private Drawable mainContent;
+
+        /// <summary>
+        /// Creates a new <see cref="RoomSubScreen"/>.
+        /// </summary>
+        /// <param name="room">The <see cref="Room"/>.</param>
+        /// <param name="allowEdit">Whether to allow editing room settings post-creation.</param>
+        protected RoomSubScreen(Room room, bool allowEdit = true)
         {
+            Room = room;
+            this.allowEdit = allowEdit;
+
             Padding = new MarginPadding { Top = Header.HEIGHT };
 
-            AddRangeInternal(new Drawable[]
-            {
-                new Box
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Colour = Color4Extensions.FromHex(@"3e3a44") // This is super temporary.
-                },
             BeatmapAvailabilityTracker = new OnlinePlayBeatmapAvailabilityTracker
             {
                 SelectedItem = { BindTarget = SelectedItem }
+            };
+
+            RoomId.BindTo(room.RoomID);
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            sampleStart = audio.Samples.Get(@"SongSelect/confirm-selection");
+
+            InternalChildren = new Drawable[]
+            {
+                BeatmapAvailabilityTracker,
+                new GridContainer
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    RowDimensions = new[]
+                    {
+                        new Dimension(),
+                        new Dimension(GridSizeMode.Absolute, 50)
+                    },
+                    Content = new[]
+                    {
+                        // Padded main content (drawable room + main content)
+                        new Drawable[]
+                        {
+                            new Container
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Padding = new MarginPadding
+                                {
+                                    Horizontal = WaveOverlayContainer.WIDTH_PADDING,
+                                    Bottom = 30
+                                },
+                                Children = new[]
+                                {
+                                    mainContent = new GridContainer
+                                    {
+                                        RelativeSizeAxes = Axes.Both,
+                                        RowDimensions = new[]
+                                        {
+                                            new Dimension(GridSizeMode.AutoSize),
+                                            new Dimension(GridSizeMode.Absolute, 10)
+                                        },
+                                        Content = new[]
+                                        {
+                                            new Drawable[]
+                                            {
+                                                new DrawableMatchRoom(Room, allowEdit)
+                                                {
+                                                    OnEdit = () => settingsOverlay.Show()
+                                                }
+                                            },
+                                            null,
+                                            new Drawable[]
+                                            {
+                                                new Container
+                                                {
+                                                    RelativeSizeAxes = Axes.Both,
+                                                    Children = new[]
+                                                    {
+                                                        new Container
+                                                        {
+                                                            RelativeSizeAxes = Axes.Both,
+                                                            Masking = true,
+                                                            CornerRadius = 10,
+                                                            Child = new Box
+                                                            {
+                                                                RelativeSizeAxes = Axes.Both,
+                                                                Colour = Color4Extensions.FromHex(@"3e3a44") // Temporary.
+                                                            },
+                                                        },
+                                                        new Container
+                                                        {
+                                                            RelativeSizeAxes = Axes.Both,
+                                                            Padding = new MarginPadding(20),
+                                                            Child = CreateMainContent(),
                                                         },
                                                         new Container
                                                         {
                                                             Anchor = Anchor.BottomLeft,
                                                             Origin = Anchor.BottomLeft,
-                    Depth = float.MinValue,
                                                             RelativeSizeAxes = Axes.X,
                                                             AutoSizeAxes = Axes.Y,
-                    Padding = new MarginPadding { Horizontal = HORIZONTAL_OVERFLOW_PADDING },
                                                             Child = userModsSelectOverlay = new UserModSelectOverlay
                                                             {
                                                                 SelectedMods = { BindTarget = UserMods },
                                                                 IsValidMod = _ => false
                                                             }
                                                         },
-            });
                                                     }
-
-        protected override void ClearInternal(bool disposeChildren = true) =>
-            throw new InvalidOperationException($"{nameof(RoomSubScreen)}'s children should not be cleared as it will remove required components");
-
-        [BackgroundDependencyLoader]
-        private void load(AudioManager audio)
+                                                }
+                                            }
+                                        }
+                                    },
+                                    new Container
                                     {
-            sampleStart = audio.Samples.Get(@"SongSelect/confirm-selection");
+                                        RelativeSizeAxes = Axes.Both,
+                                        // Resolves 1px masking errors between the settings overlay and the room panel.
+                                        Padding = new MarginPadding(-1),
+                                        Child = settingsOverlay = CreateRoomSettingsOverlay()
+                                    }
+                                },
+                            },
+                        },
+                        // Footer
+                        new Drawable[]
+                        {
+                            new Container
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Children = new Drawable[]
+                                {
+                                    new Box
+                                    {
+                                        RelativeSizeAxes = Axes.Both,
+                                        Colour = Color4Extensions.FromHex(@"28242d") // Temporary.
+                                    },
+                                    new Container
+                                    {
+                                        RelativeSizeAxes = Axes.Both,
+                                        Padding = new MarginPadding(5),
+                                        Child = CreateFooter()
+                                    },
+                                }
+                            }
+                        }
+                    }
+                }
+            };
         }
 
         protected override void LoadComplete()
         {
             base.LoadComplete();
 
+            RoomId.BindValueChanged(id =>
+            {
+                if (id.NewValue == null)
+                {
+                    // A new room is being created.
+                    // The main content should be hidden until the settings overlay is hidden, signaling the room is ready to be displayed.
+                    mainContent.Hide();
+                    settingsOverlay.Show();
+                }
+                else
+                {
+                    mainContent.Show();
+                    settingsOverlay.Hide();
+                }
+            }, true);
+
             SelectedItem.BindValueChanged(_ => Scheduler.AddOnce(selectedItemChanged));
 
             managerUpdated = beatmapManager.ItemUpdated.GetBoundCopy();
@@ -117,12 +246,25 @@ namespace osu.Game.Screens.OnlinePlay.Match
 
         public override bool OnBackButton()
         {
+            if (Room.RoomID.Value == null)
+            {
+                // room has not been created yet; exit immediately.
+                settingsOverlay.Hide();
+                return base.OnBackButton();
+            }
+
             if (userModsSelectOverlay.State.Value == Visibility.Visible)
             {
                 userModsSelectOverlay.Hide();
                 return true;
             }
 
+            if (settingsOverlay.State.Value == Visibility.Visible)
+            {
+                settingsOverlay.Hide();
+                return true;
+            }
+
             return base.OnBackButton();
         }
 
@@ -257,6 +399,21 @@ namespace osu.Game.Screens.OnlinePlay.Match
                 track.Looping = false;
         }
 
+        /// <summary>
+        /// Creates the main centred content.
+        /// </summary>
+        protected abstract Drawable CreateMainContent();
+
+        /// <summary>
+        /// Creates the footer content.
+        /// </summary>
+        protected abstract Drawable CreateFooter();
+
+        /// <summary>
+        /// Creates the room settings overlay.
+        /// </summary>
+        protected abstract RoomSettingsOverlay CreateRoomSettingsOverlay();
+
         private class UserModSelectOverlay : LocalPlayerModSelectOverlay
         {
         }

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

@@ -0,0 +1,111 @@
+// 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.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Input.Bindings;
+using osu.Game.Input.Bindings;
+using osu.Game.Screens.OnlinePlay.Match.Components;
+using osu.Game.Screens.Play;
+
+namespace osu.Game.Screens.OnlinePlay.Multiplayer
+{
+    public class GameplayChatDisplay : MatchChatDisplay, IKeyBindingHandler<GlobalAction>
+    {
+        [Resolved]
+        private ILocalUserPlayInfo localUserInfo { get; set; }
+
+        private IBindable<bool> localUserPlaying = new Bindable<bool>();
+
+        public override bool PropagatePositionalInputSubTree => !localUserPlaying.Value;
+
+        public Bindable<bool> Expanded = new Bindable<bool>();
+
+        private readonly Bindable<bool> expandedFromTextboxFocus = new Bindable<bool>();
+
+        private const float height = 100;
+
+        public override bool PropagateNonPositionalInputSubTree => true;
+
+        public GameplayChatDisplay()
+            : base(leaveChannelOnDispose: false)
+        {
+            RelativeSizeAxes = Axes.X;
+
+            Background.Alpha = 0.2f;
+
+            Textbox.FocusLost = () => expandedFromTextboxFocus.Value = false;
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            localUserPlaying = localUserInfo.IsPlaying.GetBoundCopy();
+            localUserPlaying.BindValueChanged(playing =>
+            {
+                // for now let's never hold focus. this avoid misdirected gameplay keys entering chat.
+                // note that this is done within this callback as it triggers an un-focus as well.
+                Textbox.HoldFocus = false;
+
+                // only hold focus (after sending a message) during breaks
+                Textbox.ReleaseFocusOnCommit = playing.NewValue;
+            }, true);
+
+            Expanded.BindValueChanged(_ => updateExpandedState(), true);
+            expandedFromTextboxFocus.BindValueChanged(focus =>
+            {
+                if (focus.NewValue)
+                    updateExpandedState();
+                else
+                {
+                    // on finishing typing a message there should be a brief delay before hiding.
+                    using (BeginDelayedSequence(600))
+                        updateExpandedState();
+                }
+            }, true);
+        }
+
+        public bool OnPressed(GlobalAction action)
+        {
+            switch (action)
+            {
+                case GlobalAction.ToggleChatFocus:
+                    if (Textbox.HasFocus)
+                    {
+                        Schedule(() => Textbox.KillFocus());
+                    }
+                    else
+                    {
+                        expandedFromTextboxFocus.Value = true;
+
+                        // schedule required to ensure the textbox has become present from above bindable update.
+                        Schedule(() => Textbox.TakeFocus());
+                    }
+
+                    return true;
+            }
+
+            return false;
+        }
+
+        public void OnReleased(GlobalAction action)
+        {
+        }
+
+        private void updateExpandedState()
+        {
+            if (Expanded.Value || expandedFromTextboxFocus.Value)
+            {
+                this.FadeIn(300, Easing.OutQuint);
+                this.ResizeHeightTo(height, 500, Easing.OutQuint);
+            }
+            else
+            {
+                this.FadeOut(300, Easing.OutQuint);
+                this.ResizeHeightTo(0, 500, Easing.OutQuint);
+            }
+        }
+    }
+}

osu.Game/Screens/OnlinePlay/Multiplayer/Match/BeatmapSelectionControl.cs

@@ -8,6 +8,7 @@ using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Screens;
 using osu.Game.Online.API;
 using osu.Game.Screens.OnlinePlay.Match.Components;
+using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
@@ -35,6 +36,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                 RelativeSizeAxes = Axes.X,
                 AutoSizeAxes = Axes.Y,
                 Direction = FillDirection.Vertical,
+                Spacing = new Vector2(5),
                 Children = new Drawable[]
                 {
                     beatmapPanelContainer = new Container

osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchFooter.cs

@@ -2,18 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
-using osu.Game.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
     public class MultiplayerMatchFooter : CompositeDrawable
     {
-        public const float HEIGHT = 50;
         private const float ready_button_width = 600;
         private const float spectate_button_width = 200;
 
@@ -27,19 +22,14 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
             set => spectateButton.OnSpectateClick = value;
         }
 
-        private readonly Drawable background;
         private readonly MultiplayerReadyButton readyButton;
         private readonly MultiplayerSpectateButton spectateButton;
 
         public MultiplayerMatchFooter()
         {
-            RelativeSizeAxes = Axes.X;
-            Height = HEIGHT;
+            RelativeSizeAxes = Axes.Both;
 
-            InternalChildren = new[]
-            {
-                background = new Box { RelativeSizeAxes = Axes.Both },
-                new GridContainer
+            InternalChild = new GridContainer
             {
                 RelativeSizeAxes = Axes.Both,
                 Content = new[]
@@ -63,18 +53,11 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                 {
                     new Dimension(),
                     new Dimension(maxSize: spectate_button_width),
-                        new Dimension(GridSizeMode.Absolute, 10),
+                    new Dimension(GridSizeMode.Absolute, 5),
                     new Dimension(maxSize: ready_button_width),
                     new Dimension()
                 }
-                }
             };
         }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            background.Colour = Color4Extensions.FromHex(@"28242d");
-        }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchHeader.cs

@@ -1,106 +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 osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.UserInterface;
-using osu.Game.Graphics;
-using osu.Game.Graphics.Containers;
-using osu.Game.Graphics.Sprites;
-using osu.Game.Online.API;
-using osu.Game.Screens.OnlinePlay.Match.Components;
-using osu.Game.Users.Drawables;
-using osuTK;
-using FontWeight = osu.Game.Graphics.FontWeight;
-using OsuColour = osu.Game.Graphics.OsuColour;
-using OsuFont = osu.Game.Graphics.OsuFont;
-
-namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
-{
-    public class MultiplayerMatchHeader : OnlinePlayComposite
-    {
-        public const float HEIGHT = 50;
-
-        public Action OpenSettings;
-
-        private UpdateableAvatar avatar;
-        private LinkFlowContainer hostText;
-        private Button openSettingsButton;
-
-        [Resolved]
-        private IAPIProvider api { get; set; }
-
-        public MultiplayerMatchHeader()
-        {
-            RelativeSizeAxes = Axes.X;
-            Height = HEIGHT;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            InternalChildren = new Drawable[]
-            {
-                new FillFlowContainer
-                {
-                    AutoSizeAxes = Axes.Both,
-                    Direction = FillDirection.Horizontal,
-                    Spacing = new Vector2(10, 0),
-                    Children = new Drawable[]
-                    {
-                        avatar = new UpdateableAvatar
-                        {
-                            Size = new Vector2(50),
-                            Masking = true,
-                            CornerRadius = 10,
-                        },
-                        new FillFlowContainer
-                        {
-                            AutoSizeAxes = Axes.Both,
-                            Direction = FillDirection.Vertical,
-                            Children = new Drawable[]
-                            {
-                                new OsuSpriteText
-                                {
-                                    Font = OsuFont.GetFont(size: 30),
-                                    Current = { BindTarget = RoomName }
-                                },
-                                hostText = new LinkFlowContainer(s => s.Font = OsuFont.GetFont(size: 20))
-                                {
-                                    AutoSizeAxes = Axes.Both,
-                                    Direction = FillDirection.Horizontal,
-                                }
-                            }
-                        }
-                    }
-                },
-                openSettingsButton = new PurpleTriangleButton
-                {
-                    Anchor = Anchor.CentreRight,
-                    Origin = Anchor.CentreRight,
-                    Size = new Vector2(150, HEIGHT),
-                    Text = "Open settings",
-                    Action = () => OpenSettings?.Invoke(),
-                    Alpha = 0
-                }
-            };
-
-            Host.BindValueChanged(host =>
-            {
-                avatar.User = host.NewValue;
-
-                hostText.Clear();
-
-                if (host.NewValue != null)
-                {
-                    hostText.AddText("hosted by ");
-                    hostText.AddUserLink(host.NewValue, s => s.Font = s.Font.With(weight: FontWeight.SemiBold));
-                }
-
-                openSettingsButton.Alpha = host.NewValue?.Equals(api.LocalUser.Value) == true ? 1 : 0;
-            }, true);
-        }
-    }
-}

osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchSettingsOverlay.cs

@@ -26,7 +26,7 @@ using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
-    public class MultiplayerMatchSettingsOverlay : MatchSettingsOverlay
+    public class MultiplayerMatchSettingsOverlay : RoomSettingsOverlay
     {
         private MatchSettings settings;
 
@@ -150,6 +150,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                                                                     {
                                                                         RelativeSizeAxes = Axes.X,
                                                                         TabbableContentContainer = this,
+                                                                        LengthLimit = 100,
                                                                     },
                                                                 },
                                                                 new Section("Room visibility")
@@ -207,6 +208,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                                                                     {
                                                                         RelativeSizeAxes = Axes.X,
                                                                         TabbableContentContainer = this,
+                                                                        LengthLimit = 255,
                                                                     },
                                                                 },
                                                             }

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

@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Logging;
 using osu.Framework.Screens;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Screens.OnlinePlay.Components;
@@ -23,35 +22,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                 client.ChangeState(MultiplayerUserState.Idle);
         }
 
-        protected override void UpdatePollingRate(bool isIdle)
-        {
-            var multiplayerRoomManager = (MultiplayerRoomManager)RoomManager;
-
-            if (!this.IsCurrentScreen())
-            {
-                multiplayerRoomManager.TimeBetweenListingPolls.Value = 0;
-                multiplayerRoomManager.TimeBetweenSelectionPolls.Value = 0;
-            }
-            else
-            {
-                switch (CurrentSubScreen)
-                {
-                    case LoungeSubScreen _:
-                        multiplayerRoomManager.TimeBetweenListingPolls.Value = isIdle ? 120000 : 15000;
-                        multiplayerRoomManager.TimeBetweenSelectionPolls.Value = isIdle ? 120000 : 15000;
-                        break;
-
-                    // Don't poll inside the match or anywhere else.
-                    default:
-                        multiplayerRoomManager.TimeBetweenListingPolls.Value = 0;
-                        multiplayerRoomManager.TimeBetweenSelectionPolls.Value = 0;
-                        break;
-                }
-            }
-
-            Logger.Log($"Polling adjusted (listing: {multiplayerRoomManager.TimeBetweenListingPolls.Value}, selection: {multiplayerRoomManager.TimeBetweenSelectionPolls.Value})");
-        }
-
         protected override string ScreenTitle => "Multiplayer";
 
         protected override RoomManager CreateRoomManager() => new MultiplayerRoomManager();

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

@@ -1,12 +1,16 @@
 // 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.Threading.Tasks;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Logging;
+using osu.Framework.Screens;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
+using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Match;
@@ -21,6 +25,19 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
         [Resolved]
         private MultiplayerClient client { get; set; }
 
+        public override void OnResuming(IScreen last)
+        {
+            base.OnResuming(last);
+
+            // Upon having left a room, we don't know whether we were the only participant, and whether the room is now closed as a result of leaving it.
+            // To work around this, temporarily remove the room and trigger an immediate listing poll.
+            if (last is MultiplayerMatchSubScreen match)
+            {
+                RoomManager.RemoveRoom(match.Room);
+                ListingPollingComponent.PollImmediately();
+            }
+        }
+
         protected override FilterCriteria CreateFilterCriteria()
         {
             var criteria = base.CreateFilterCriteria();
@@ -33,12 +50,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
         protected override Room CreateNewRoom() => new Room
         {
             Name = { Value = $"{api.LocalUser}'s awesome room" },
-            Category = { Value = RoomCategory.Realtime },
             Type = { Value = MatchType.HeadToHead },
         };
 
         protected override RoomSubScreen CreateRoomSubScreen(Room room) => new MultiplayerMatchSubScreen(room);
 
+        protected override ListingPollingComponent CreatePollingComponent() => new MultiplayerListingPollingComponent();
+
         protected override void OpenNewRoom(Room room)
         {
             if (client?.IsConnected.Value != true)
@@ -49,5 +67,32 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
 
             base.OpenNewRoom(room);
         }
+
+        private class MultiplayerListingPollingComponent : ListingPollingComponent
+        {
+            [Resolved]
+            private MultiplayerClient client { get; set; }
+
+            private readonly IBindable<bool> isConnected = new Bindable<bool>();
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                isConnected.BindTo(client.IsConnected);
+                isConnected.BindValueChanged(c => Scheduler.AddOnce(() =>
+                {
+                    if (isConnected.Value && IsLoaded)
+                        PollImmediately();
+                }), true);
+            }
+
+            protected override Task Poll()
+            {
+                if (!isConnected.Value)
+                    return Task.CompletedTask;
+
+                return base.Poll();
+            }
+        }
     }
 }

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

@@ -49,60 +49,56 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
         private OngoingOperationTracker ongoingOperationTracker { get; set; }
 
         [Resolved]
-        private Bindable<Room> currentRoom { get; set; }
-
-        private MultiplayerMatchSettingsOverlay settingsOverlay;
+        private Bindable<Room> currentRoom { get; set; } // Todo: This should not exist.
 
         private readonly IBindable<bool> isConnected = new Bindable<bool>();
 
         [CanBeNull]
         private IDisposable readyClickOperation;
 
-        private GridContainer mainContent;
-
         public MultiplayerMatchSubScreen(Room room)
+            : base(room)
         {
             Title = room.RoomID.Value == null ? "New room" : room.Name.Value;
             Activity.Value = new UserActivity.InLobby(room);
         }
 
-        [BackgroundDependencyLoader]
-        private void load()
+        protected override void LoadComplete()
         {
-            AddRangeInternal(new Drawable[]
+            base.LoadComplete();
+
+            SelectedItem.BindTo(client.CurrentMatchPlayingItem);
+
+            BeatmapAvailability.BindValueChanged(updateBeatmapAvailability, true);
+            UserMods.BindValueChanged(onUserModsChanged);
+
+            client.LoadRequested += onLoadRequested;
+            client.RoomUpdated += onRoomUpdated;
+
+            isConnected.BindTo(client.IsConnected);
+            isConnected.BindValueChanged(connected =>
             {
-                mainContent = new GridContainer
+                if (!connected.NewValue)
+                    handleRoomLost();
+            }, true);
+
+            currentRoom.BindValueChanged(room =>
             {
-                    RelativeSizeAxes = Axes.Both,
-                    Content = new[]
+                if (room.NewValue == null)
                 {
-                        new Drawable[]
-                        {
-                            new Container
-                            {
-                                RelativeSizeAxes = Axes.Both,
-                                Padding = new MarginPadding
-                                {
-                                    Horizontal = HORIZONTAL_OVERFLOW_PADDING + 55,
-                                    Vertical = 20
-                                },
-                                Child = new GridContainer
-                                {
-                                    RelativeSizeAxes = Axes.Both,
-                                    RowDimensions = new[]
-                                    {
-                                        new Dimension(GridSizeMode.AutoSize),
-                                        new Dimension(),
-                                    },
-                                    Content = new[]
-                                    {
-                                        new Drawable[]
-                                        {
-                                            new MultiplayerMatchHeader
-                                            {
-                                                OpenSettings = () => settingsOverlay.Show()
+                    // the room has gone away.
+                    // this could mean something happened during the join process, or an external connection issue occurred.
+                    // one specific scenario is where the underlying room is created, but the signalr server returns an error during the join process. this triggers a PartRoom operation (see https://github.com/ppy/osu/blob/7654df94f6f37b8382be7dfcb4f674e03bd35427/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomManager.cs#L97)
+                    handleRoomLost();
                 }
-                                        },
+            }, true);
+        }
+
+        protected override Drawable CreateMainContent() => new GridContainer
+        {
+            RelativeSizeAxes = Axes.Both,
+            Content = new[]
+            {
                 new Drawable[]
                 {
                     new Container
@@ -145,27 +141,21 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                                     // Spacer
                                     null,
                                     // Main right column
-                                                            new FillFlowContainer
+                                    new GridContainer
                                     {
-                                                                RelativeSizeAxes = Axes.X,
-                                                                AutoSizeAxes = Axes.Y,
-                                                                Children = new[]
+                                        RelativeSizeAxes = Axes.Both,
+                                        Content = new[]
                                         {
-                                                                    new FillFlowContainer
+                                            new Drawable[] { new OverlinedHeader("Beatmap") },
+                                            new Drawable[] { new BeatmapSelectionControl { RelativeSizeAxes = Axes.X } },
+                                            new[]
                                             {
-                                                                        RelativeSizeAxes = Axes.X,
-                                                                        AutoSizeAxes = Axes.Y,
-                                                                        Children = new Drawable[]
-                                                                        {
-                                                                            new OverlinedHeader("Beatmap"),
-                                                                            new BeatmapSelectionControl { RelativeSizeAxes = Axes.X }
-                                                                        }
-                                                                    },
                                                 UserModsSection = new FillFlowContainer
                                                 {
                                                     RelativeSizeAxes = Axes.X,
                                                     AutoSizeAxes = Axes.Y,
                                                     Margin = new MarginPadding { Top = 10 },
+                                                    Alpha = 0,
                                                     Children = new Drawable[]
                                                     {
                                                         new OverlinedHeader("Extra mods"),
@@ -192,102 +182,37 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                                                                     Scale = new Vector2(0.8f),
                                                                 },
                                                             }
-                                                                            }
-                                                                        }
-                                                                    }
-                                                                }
-                                                            }
-                                                        }
-                                                    }
-                                                }
+                                                        },
                                                     }
                                                 },
-                                        new Drawable[]
-                                        {
-                                            new GridContainer
-                                            {
-                                                RelativeSizeAxes = Axes.Both,
+                                            },
+                                            new Drawable[] { new OverlinedHeader("Chat") { Margin = new MarginPadding { Vertical = 5 }, }, },
+                                            new Drawable[] { new MatchChatDisplay { RelativeSizeAxes = Axes.Both } }
+                                        },
                                         RowDimensions = new[]
                                         {
-                                                    new Dimension(GridSizeMode.AutoSize)
-                                                },
-                                                Content = new[]
-                                                {
-                                                    new Drawable[] { new OverlinedHeader("Chat") },
-                                                    new Drawable[] { new MatchChatDisplay { RelativeSizeAxes = Axes.Both } }
-                                                }
-                                            }
+                                            new Dimension(GridSizeMode.AutoSize),
+                                            new Dimension(GridSizeMode.AutoSize),
+                                            new Dimension(GridSizeMode.AutoSize),
+                                            new Dimension(GridSizeMode.AutoSize),
+                                            new Dimension(),
                                         }
                                     },
                                 }
                             }
+                        }
+                    }
                 },
-                        new Drawable[]
-                        {
-                            new MultiplayerMatchFooter
+            },
+        };
+
+        protected override Drawable CreateFooter() => new MultiplayerMatchFooter
         {
             OnReadyClick = onReadyClick,
             OnSpectateClick = onSpectateClick
-                            }
-                        }
-                    },
-                    RowDimensions = new[]
-                    {
-                        new Dimension(),
-                        new Dimension(GridSizeMode.AutoSize),
-                    }
-                },
-                settingsOverlay = new MultiplayerMatchSettingsOverlay
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    State = { Value = client.Room == null ? Visibility.Visible : Visibility.Hidden }
-                }
-            });
+        };
 
-            if (client.Room == null)
-            {
-                // A new room is being created.
-                // The main content should be hidden until the settings overlay is hidden, signaling the room is ready to be displayed.
-                mainContent.Hide();
-
-                settingsOverlay.State.BindValueChanged(visibility =>
-                {
-                    if (visibility.NewValue == Visibility.Hidden)
-                        mainContent.Show();
-                }, true);
-            }
-        }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            SelectedItem.BindTo(client.CurrentMatchPlayingItem);
-
-            BeatmapAvailability.BindValueChanged(updateBeatmapAvailability, true);
-            UserMods.BindValueChanged(onUserModsChanged);
-
-            client.LoadRequested += onLoadRequested;
-            client.RoomUpdated += onRoomUpdated;
-
-            isConnected.BindTo(client.IsConnected);
-            isConnected.BindValueChanged(connected =>
-            {
-                if (!connected.NewValue)
-                    handleRoomLost();
-            }, true);
-
-            currentRoom.BindValueChanged(room =>
-            {
-                if (room.NewValue == null)
-                {
-                    // the room has gone away.
-                    // this could mean something happened during the join process, or an external connection issue occurred.
-                    // one specific scenario is where the underlying room is created, but the signalr server returns an error during the join process. this triggers a PartRoom operation (see https://github.com/ppy/osu/blob/7654df94f6f37b8382be7dfcb4f674e03bd35427/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomManager.cs#L97)
-                    handleRoomLost();
-                }
-            }, true);
-        }
+        protected override RoomSettingsOverlay CreateRoomSettingsOverlay() => new MultiplayerMatchSettingsOverlay();
 
         protected override void UpdateMods()
         {
@@ -305,23 +230,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
 
         private bool exitConfirmed;
 
-        public override bool OnBackButton()
-        {
-            if (client.Room == null)
-            {
-                // room has not been created yet; exit immediately.
-                return base.OnBackButton();
-            }
-
-            if (settingsOverlay.State.Value == Visibility.Visible)
-            {
-                settingsOverlay.Hide();
-                return true;
-            }
-
-            return base.OnBackButton();
-        }
-
         public override bool OnExiting(IScreen next)
         {
             // the room may not be left immediately after a disconnection due to async flow,
@@ -505,19 +413,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
             }
         }
 
-        protected override void Dispose(bool isDisposing)
-        {
-            base.Dispose(isDisposing);
-
-            if (client != null)
-            {
-                client.RoomUpdated -= onRoomUpdated;
-                client.LoadRequested -= onLoadRequested;
-            }
-
-            modSettingChangeTracker?.Dispose();
-        }
-
         public void PresentBeatmap(WorkingBeatmap beatmap, RulesetInfo ruleset)
         {
             if (!this.IsCurrentScreen())
@@ -533,5 +428,18 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
 
             this.Push(new MultiplayerMatchSongSelect(beatmap, ruleset));
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client != null)
+            {
+                client.RoomUpdated -= onRoomUpdated;
+                client.LoadRequested -= onLoadRequested;
+            }
+
+            modSettingChangeTracker?.Dispose();
+        }
     }
 }

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

@@ -68,6 +68,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
             {
                 AutoSizeAxes = Axes.Both,
                 Direction = FillDirection.Vertical,
+                Spacing = new Vector2(5)
             });
 
             // todo: this should be implemented via a custom HUD implementation, and correctly masked to the main content area.
@@ -78,7 +79,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
 
                 ((IBindable<bool>)leaderboard.Expanded).BindTo(HUDOverlay.ShowHud);
 
-                leaderboardFlow.Add(l);
+                leaderboardFlow.Insert(0, l);
 
                 if (leaderboard.TeamScores.Count >= 2)
                 {
@@ -87,10 +88,15 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                         Team1Score = { BindTarget = leaderboard.TeamScores.First().Value },
                         Team2Score = { BindTarget = leaderboard.TeamScores.Last().Value },
                         Expanded = { BindTarget = HUDOverlay.ShowHud },
-                    }, leaderboardFlow.Add);
+                    }, scoreDisplay => leaderboardFlow.Insert(1, scoreDisplay));
                 }
             });
 
+            LoadComponentAsync(new GameplayChatDisplay
+            {
+                Expanded = { BindTarget = HUDOverlay.ShowHud },
+            }, chat => leaderboardFlow.Insert(2, chat));
+
             HUDOverlay.Add(loadingDisplay = new LoadingLayer(true) { Depth = float.MaxValue });
         }
 

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

@@ -2,11 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.Threading.Tasks;
 using osu.Framework.Allocation;
-using osu.Framework.Bindables;
 using osu.Framework.Extensions.ExceptionExtensions;
 using osu.Framework.Logging;
 using osu.Game.Online.Multiplayer;
@@ -21,22 +18,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
         [Resolved]
         private MultiplayerClient multiplayerClient { get; set; }
 
-        public readonly Bindable<double> TimeBetweenListingPolls = new Bindable<double>();
-        public readonly Bindable<double> TimeBetweenSelectionPolls = new Bindable<double>();
-        private readonly IBindable<bool> isConnected = new Bindable<bool>();
-        private readonly Bindable<bool> allowPolling = new Bindable<bool>();
-
-        private ListingPollingComponent listingPollingComponent;
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            isConnected.BindTo(multiplayerClient.IsConnected);
-            isConnected.BindValueChanged(_ => Scheduler.AddOnce(updatePolling));
-            JoinedRoom.BindValueChanged(_ => Scheduler.AddOnce(updatePolling), true);
-        }
-
         public override void CreateRoom(Room room, Action<Room> onSuccess = null, Action<string> onError = null)
             => base.CreateRoom(room, r => joinMultiplayerRoom(r, r.Password.Value, onSuccess, onError), onError);
 
@@ -64,19 +45,8 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
             if (JoinedRoom.Value == null)
                 return;
 
-            var joinedRoom = JoinedRoom.Value;
-
             base.PartRoom();
-
             multiplayerClient.LeaveRoom();
-
-            // Todo: This is not the way to do this. Basically when we're the only participant and the room closes, there's no way to know if this is actually the case.
-            // This is delayed one frame because upon exiting the match subscreen, multiplayer updates the polling rate and messes with polling.
-            Schedule(() =>
-            {
-                RemoveRoom(joinedRoom);
-                listingPollingComponent.PollImmediately();
-            });
         }
 
         private void joinMultiplayerRoom(Room room, string password, Action<Room> onSuccess = null, Action<string> onError = null)
@@ -99,70 +69,5 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                 }
             });
         }
-
-        private void updatePolling()
-        {
-            if (!isConnected.Value)
-                ClearRooms();
-
-            // Don't poll when not connected or when a room has been joined.
-            allowPolling.Value = isConnected.Value && JoinedRoom.Value == null;
-        }
-
-        protected override IEnumerable<RoomPollingComponent> CreatePollingComponents() => new RoomPollingComponent[]
-        {
-            listingPollingComponent = new MultiplayerListingPollingComponent
-            {
-                TimeBetweenPolls = { BindTarget = TimeBetweenListingPolls },
-                AllowPolling = { BindTarget = allowPolling }
-            },
-            new MultiplayerSelectionPollingComponent
-            {
-                TimeBetweenPolls = { BindTarget = TimeBetweenSelectionPolls },
-                AllowPolling = { BindTarget = allowPolling }
-            }
-        };
-
-        private class MultiplayerListingPollingComponent : ListingPollingComponent
-        {
-            public readonly IBindable<bool> AllowPolling = new Bindable<bool>();
-
-            protected override void LoadComplete()
-            {
-                base.LoadComplete();
-
-                AllowPolling.BindValueChanged(allowPolling =>
-                {
-                    if (!allowPolling.NewValue)
-                        return;
-
-                    if (IsLoaded)
-                        PollImmediately();
-                });
-            }
-
-            protected override Task Poll() => !AllowPolling.Value ? Task.CompletedTask : base.Poll();
-        }
-
-        private class MultiplayerSelectionPollingComponent : SelectionPollingComponent
-        {
-            public readonly IBindable<bool> AllowPolling = new Bindable<bool>();
-
-            protected override void LoadComplete()
-            {
-                base.LoadComplete();
-
-                AllowPolling.BindValueChanged(allowPolling =>
-                {
-                    if (!allowPolling.NewValue)
-                        return;
-
-                    if (IsLoaded)
-                        PollImmediately();
-                });
-            }
-
-            protected override Task Poll() => !AllowPolling.Value ? Task.CompletedTask : base.Poll();
-        }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorPlayer.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
         /// <param name="score">The score containing the player's replay.</param>
         /// <param name="spectatorPlayerClock">The clock controlling the gameplay running state.</param>
         public MultiSpectatorPlayer([NotNull] Score score, [NotNull] ISpectatorPlayerClock spectatorPlayerClock)
-            : base(score)
+            : base(score, new PlayerConfiguration { AllowUserInteraction = false })
         {
             this.spectatorPlayerClock = spectatorPlayerClock;
         }
@@ -34,6 +34,9 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
         private void load()
         {
             spectatorPlayerClock.WaitingOnFrames.BindTo(waitingOnFrames);
+
+            HUDOverlay.PlayerSettingsOverlay.Expire();
+            HUDOverlay.HoldToQuit.Expire();
         }
 
         protected override void UpdateAfterChildren()

osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorPlayerLoader.cs

@@ -3,6 +3,7 @@
 
 using System;
 using JetBrains.Annotations;
+using osu.Framework.Allocation;
 using osu.Game.Scoring;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play;
@@ -19,6 +20,12 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
         {
         }
 
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            PlayerSettings.Expire();
+        }
+
         protected override void LogoArriving(OsuLogo logo, bool resuming)
         {
         }

osu.Game/Screens/OnlinePlay/OnlinePlayScreen.cs

@@ -14,14 +14,12 @@ using osu.Framework.Screens;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics.Containers;
-using osu.Game.Input;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge;
-using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Users;
 using osuTK;
 using osuTK.Graphics;
@@ -44,17 +42,12 @@ namespace osu.Game.Screens.OnlinePlay
         private LoungeSubScreen loungeSubScreen;
         private ScreenStack screenStack;
 
-        private readonly IBindable<bool> isIdle = new BindableBool();
-
         [Cached(Type = typeof(IRoomManager))]
         protected RoomManager RoomManager { get; private set; }
 
         [Cached]
         private readonly Bindable<Room> selectedRoom = new Bindable<Room>();
 
-        [Cached]
-        private readonly Bindable<FilterCriteria> currentFilter = new Bindable<FilterCriteria>(new FilterCriteria());
-
         [Cached]
         private readonly OngoingOperationTracker ongoingOperationTracker = new OngoingOperationTracker();
 
@@ -67,9 +60,6 @@ namespace osu.Game.Screens.OnlinePlay
         [Resolved]
         protected IAPIProvider API { get; private set; }
 
-        [Resolved(CanBeNull = true)]
-        private IdleTracker idleTracker { get; set; }
-
         [Resolved(CanBeNull = true)]
         private OsuLogo logo { get; set; }
 
@@ -147,12 +137,6 @@ namespace osu.Game.Screens.OnlinePlay
 
             apiState.BindTo(API.State);
             apiState.BindValueChanged(onlineStateChanged, true);
-
-            if (idleTracker != null)
-            {
-                isIdle.BindTo(idleTracker.IsIdle);
-                isIdle.BindValueChanged(idle => UpdatePollingRate(idle.NewValue), true);
-            }
         }
 
         protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
@@ -162,8 +146,6 @@ namespace osu.Game.Screens.OnlinePlay
             return dependencies;
         }
 
-        protected abstract void UpdatePollingRate(bool isIdle);
-
         private void forcefullyExit()
         {
             // This is temporary since we don't currently have a way to force screens to be exited
@@ -199,8 +181,6 @@ namespace osu.Game.Screens.OnlinePlay
             screenStack.CurrentScreen.OnResuming(last);
 
             base.OnResuming(last);
-
-            UpdatePollingRate(isIdle.Value);
         }
 
         public override void OnSuspending(IScreen next)
@@ -210,8 +190,6 @@ namespace osu.Game.Screens.OnlinePlay
 
             Debug.Assert(screenStack.CurrentScreen != null);
             screenStack.CurrentScreen.OnSuspending(next);
-
-            UpdatePollingRate(isIdle.Value);
         }
 
         public override bool OnExiting(IScreen next)
@@ -275,15 +253,13 @@ namespace osu.Game.Screens.OnlinePlay
 
             if (newScreen is IOsuScreen newOsuScreen)
                 ((IBindable<UserActivity>)Activity).BindTo(newOsuScreen.Activity);
-
-            UpdatePollingRate(isIdle.Value);
         }
 
         protected IScreen CurrentSubScreen => screenStack.CurrentScreen;
 
         protected abstract string ScreenTitle { get; }
 
-        protected abstract RoomManager CreateRoomManager();
+        protected virtual RoomManager CreateRoomManager() => new RoomManager();
 
         protected abstract LoungeSubScreen CreateLounge();
 

osu.Game/Screens/OnlinePlay/OnlinePlaySubScreen.cs

@@ -23,12 +23,6 @@ namespace osu.Game.Screens.OnlinePlay
             RelativeSizeAxes = Axes.Both;
         }
 
-        public const float X_SHIFT = 200;
-
-        public const double X_MOVE_DURATION = 800;
-
-        public const double RESUME_TRANSITION_DELAY = DISAPPEAR_DURATION / 2;
-
         public const double APPEAR_DURATION = 800;
 
         public const double DISAPPEAR_DURATION = 500;
@@ -36,28 +30,23 @@ namespace osu.Game.Screens.OnlinePlay
         public override void OnEntering(IScreen last)
         {
             this.FadeInFromZero(APPEAR_DURATION, Easing.OutQuint);
-            this.FadeInFromZero(APPEAR_DURATION, Easing.OutQuint);
-            this.MoveToX(X_SHIFT).MoveToX(0, X_MOVE_DURATION, Easing.OutQuint);
         }
 
         public override bool OnExiting(IScreen next)
         {
             this.FadeOut(DISAPPEAR_DURATION, Easing.OutQuint);
-            this.MoveToX(X_SHIFT, X_MOVE_DURATION, Easing.OutQuint);
 
             return false;
         }
 
         public override void OnResuming(IScreen last)
         {
-            this.Delay(RESUME_TRANSITION_DELAY).FadeIn(APPEAR_DURATION, Easing.OutQuint);
-            this.MoveToX(0, X_MOVE_DURATION, Easing.OutQuint);
+            this.FadeIn(APPEAR_DURATION, Easing.OutQuint);
         }
 
         public override void OnSuspending(IScreen next)
         {
             this.FadeOut(DISAPPEAR_DURATION, Easing.OutQuint);
-            this.MoveToX(-X_SHIFT, X_MOVE_DURATION, Easing.OutQuint);
         }
 
         public override string ToString() => Title;

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

@@ -1,53 +1,14 @@
 // 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.Logging;
-using osu.Framework.Screens;
-using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge;
-using osu.Game.Screens.OnlinePlay.Match;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
 {
     public class Playlists : OnlinePlayScreen
     {
-        protected override void UpdatePollingRate(bool isIdle)
-        {
-            var playlistsManager = (PlaylistsRoomManager)RoomManager;
-
-            if (!this.IsCurrentScreen())
-            {
-                playlistsManager.TimeBetweenListingPolls.Value = 0;
-                playlistsManager.TimeBetweenSelectionPolls.Value = 0;
-            }
-            else
-            {
-                switch (CurrentSubScreen)
-                {
-                    case LoungeSubScreen _:
-                        playlistsManager.TimeBetweenListingPolls.Value = isIdle ? 120000 : 15000;
-                        playlistsManager.TimeBetweenSelectionPolls.Value = isIdle ? 120000 : 15000;
-                        break;
-
-                    case RoomSubScreen _:
-                        playlistsManager.TimeBetweenListingPolls.Value = 0;
-                        playlistsManager.TimeBetweenSelectionPolls.Value = isIdle ? 30000 : 5000;
-                        break;
-
-                    default:
-                        playlistsManager.TimeBetweenListingPolls.Value = 0;
-                        playlistsManager.TimeBetweenSelectionPolls.Value = 0;
-                        break;
-                }
-            }
-
-            Logger.Log($"Polling adjusted (listing: {playlistsManager.TimeBetweenListingPolls.Value}, selection: {playlistsManager.TimeBetweenSelectionPolls.Value})");
-        }
-
         protected override string ScreenTitle => "Playlists";
 
-        protected override RoomManager CreateRoomManager() => new PlaylistsRoomManager();
-
         protected override LoungeSubScreen CreateLounge() => new PlaylistsLoungeSubScreen();
     }
 }

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

@@ -9,6 +9,7 @@ using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
+using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Match;
@@ -66,6 +67,8 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
 
         protected override RoomSubScreen CreateRoomSubScreen(Room room) => new PlaylistsRoomSubScreen(room);
 
+        protected override ListingPollingComponent CreatePollingComponent() => new ListingPollingComponent();
+
         private enum PlaylistsCategory
         {
             Any,

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

@@ -0,0 +1,32 @@
+// 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.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osuTK;
+
+namespace osu.Game.Screens.OnlinePlay.Playlists
+{
+    public class PlaylistsRoomFooter : CompositeDrawable
+    {
+        public Action OnStart;
+
+        public PlaylistsRoomFooter()
+        {
+            RelativeSizeAxes = Axes.Both;
+
+            InternalChildren = new[]
+            {
+                new PlaylistsReadyButton
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    RelativeSizeAxes = Axes.Y,
+                    Size = new Vector2(600, 1),
+                    Action = () => OnStart?.Invoke()
+                }
+            };
+        }
+    }
+}

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

@@ -1,21 +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.Collections.Generic;
-using osu.Framework.Bindables;
-using osu.Game.Screens.OnlinePlay.Components;
-
-namespace osu.Game.Screens.OnlinePlay.Playlists
-{
-    public class PlaylistsRoomManager : RoomManager
-    {
-        public readonly Bindable<double> TimeBetweenListingPolls = new Bindable<double>();
-        public readonly Bindable<double> TimeBetweenSelectionPolls = new Bindable<double>();
-
-        protected override IEnumerable<RoomPollingComponent> CreatePollingComponents() => new RoomPollingComponent[]
-        {
-            new ListingPollingComponent { TimeBetweenPolls = { BindTarget = TimeBetweenListingPolls } },
-            new SelectionPollingComponent { TimeBetweenPolls = { BindTarget = TimeBetweenSelectionPolls } }
-        };
-    }
-}

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

@@ -22,7 +22,7 @@ using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
 {
-    public class PlaylistsMatchSettingsOverlay : MatchSettingsOverlay
+    public class PlaylistsRoomSettingsOverlay : RoomSettingsOverlay
     {
         public Action EditPlaylist;
 
@@ -193,7 +193,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
                                                             Child = new GridContainer
                                                             {
                                                                 RelativeSizeAxes = Axes.X,
-                                                                Height = 500,
+                                                                Height = 448,
                                                                 Content = new[]
                                                                 {
                                                                     new Drawable[]