Merge branch 'master' into clamp-scale2

.github/workflows/ci.yml

@@ -133,10 +133,7 @@ jobs:
           dotnet-version: "8.0.x"
 
       - name: Install .NET Workloads
-        run: dotnet workload install maui-ios
-
-      - name: Select Xcode 16
-        run: sudo xcode-select -s /Applications/Xcode_16.app/Contents/Developer
+        run: dotnet workload install ios --from-rollback-file https://raw.githubusercontent.com/ppy/osu-framework/refs/heads/master/workloads.json
 
       - name: Build
         run: dotnet build -c Debug osu.iOS

.github/workflows/diffcalc.yml

@@ -104,6 +104,25 @@ env:
   EXECUTION_ID: execution-${{ github.run_id }}-${{ github.run_number }}-${{ github.run_attempt }}
 
 jobs:
+  master-environment:
+    name: Save master environment
+    runs-on: ubuntu-latest
+    outputs:
+      HEAD: ${{ steps.get-head.outputs.HEAD }}
+    steps:
+      - name: Checkout osu
+        uses: actions/checkout@v4
+        with:
+          ref: master
+          sparse-checkout: |
+            README.md
+
+      - name: Get HEAD ref
+        id: get-head
+        run: |
+          ref=$(git log -1 --format='%H')
+          echo "HEAD=https://github.com/${{ github.repository }}/commit/${ref}" >> "${GITHUB_OUTPUT}"
+
   check-permissions:
     name: Check permissions
     runs-on: ubuntu-latest
@@ -121,7 +140,7 @@ jobs:
 
   create-comment:
     name: Create PR comment
-    needs: check-permissions
+    needs: [ master-environment, check-permissions ]
     runs-on: ubuntu-latest
     if: ${{ github.event_name == 'issue_comment' && github.event.issue.pull_request }}
     steps:
@@ -158,7 +177,7 @@ jobs:
 
   environment:
     name: Setup environment
-    needs: directory
+    needs: [ master-environment, directory ]
     runs-on: self-hosted
     env:
       VARS_JSON: ${{ toJSON(vars) }}
@@ -182,6 +201,10 @@ jobs:
               fi
           done
 
+      - name: Add master environment
+        run: |
+          sed -i "s;^OSU_A=.*$;OSU_A=${{ needs.master-environment.outputs.HEAD }};" "${{ needs.directory.outputs.GENERATOR_ENV }}"
+
       - name: Add pull-request environment
         if: ${{ github.event_name == 'issue_comment' && github.event.issue.pull_request }}
         run: |
@@ -361,8 +384,7 @@ jobs:
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # v2.5.0
         with:
           comment_tag: ${{ env.EXECUTION_ID }}
-          mode: upsert
-          create_if_not_exists: false
+          mode: recreate
           message: |
             Target: ${{ needs.generator.outputs.TARGET }}
             Spreadsheet: ${{ needs.generator.outputs.SPREADSHEET_LINK }}
@@ -372,8 +394,7 @@ jobs:
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # v2.5.0
         with:
           comment_tag: ${{ env.EXECUTION_ID }}
-          mode: upsert
-          create_if_not_exists: false
+          mode: recreate
           message: |
             Difficulty calculation failed: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
 

osu.Android.props

@@ -10,7 +10,7 @@
     <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.927.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.1009.0" />
   </ItemGroup>
   <PropertyGroup>
     <!-- Fody does not handle Android build well, and warns when unchanged.

osu.Android/GameplayScreenRotationLocker.cs

@@ -6,28 +6,29 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game;
+using osu.Game.Screens.Play;
 
 namespace osu.Android
 {
     public partial class GameplayScreenRotationLocker : Component
     {
-        private Bindable<bool> localUserPlaying = null!;
+        private IBindable<LocalUserPlayingState> localUserPlaying = null!;
 
         [Resolved]
         private OsuGameActivity gameActivity { get; set; } = null!;
 
         [BackgroundDependencyLoader]
-        private void load(OsuGame game)
+        private void load(ILocalUserPlayInfo localUserPlayInfo)
         {
-            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying = localUserPlayInfo.PlayingState.GetBoundCopy();
             localUserPlaying.BindValueChanged(updateLock, true);
         }
 
-        private void updateLock(ValueChangedEvent<bool> userPlaying)
+        private void updateLock(ValueChangedEvent<LocalUserPlayingState> userPlaying)
         {
             gameActivity.RunOnUiThread(() =>
             {
-                gameActivity.RequestedOrientation = userPlaying.NewValue ? ScreenOrientation.Locked : gameActivity.DefaultOrientation;
+                gameActivity.RequestedOrientation = userPlaying.NewValue != LocalUserPlayingState.NotPlaying ? ScreenOrientation.Locked : gameActivity.DefaultOrientation;
             });
         }
     }

osu.Desktop/DiscordRichPresence.cs

@@ -279,10 +279,12 @@ namespace osu.Desktop
 
             // As above, discord decides that *non-empty* strings shorter than 2 characters cannot possibly be valid input, because... reasons?
             // And yes, that is two *characters*, or *codepoints*, not *bytes* as further down below (as determined by empirical testing).
-            // That seems very questionable, and isn't even documented anywhere. So to *make it* accept such valid input,
-            // just tack on enough of U+200B ZERO WIDTH SPACEs at the end.
-            if (str.Length < 2)
-                return str.PadRight(2, '\u200B');
+            // Also, spaces don't count. Because reasons, clearly.
+            // That all seems very questionable, and isn't even documented anywhere. So to *make it* accept such valid input,
+            // just tack on enough of U+200B ZERO WIDTH SPACEs at the end. After making sure to trim whitespace.
+            string trimmed = str.Trim();
+            if (trimmed.Length < 2)
+                return trimmed.PadRight(2, '\u200B');
 
             if (Encoding.UTF8.GetByteCount(str) <= 128)
                 return str;

osu.Desktop/Updater/VelopackUpdateManager.cs

@@ -25,6 +25,8 @@ namespace osu.Desktop.Updater
         [Resolved]
         private ILocalUserPlayInfo? localUserInfo { get; set; }
 
+        private bool isInGameplay => localUserInfo?.PlayingState.Value != LocalUserPlayingState.NotPlaying;
+
         private UpdateInfo? pendingUpdate;
 
         public VelopackUpdateManager()
@@ -43,7 +45,7 @@ namespace osu.Desktop.Updater
 
         protected override async Task<bool> PerformUpdateCheck() => await checkForUpdateAsync().ConfigureAwait(false);
 
-        private async Task<bool> checkForUpdateAsync(UpdateProgressNotification? notification = null)
+        private async Task<bool> checkForUpdateAsync()
         {
             // whether to check again in 30 minutes. generally only if there's an error or no update was found (yet).
             bool scheduleRecheck = false;
@@ -51,10 +53,10 @@ namespace osu.Desktop.Updater
             try
             {
                 // Avoid any kind of update checking while gameplay is running.
-                if (localUserInfo?.IsPlaying.Value == true)
+                if (isInGameplay)
                 {
                     scheduleRecheck = true;
-                    return false;
+                    return true;
                 }
 
                 // TODO: we should probably be checking if there's a more recent update, rather than shortcutting here.
@@ -84,27 +86,22 @@ namespace osu.Desktop.Updater
                 }
 
                 // An update is found, let's notify the user and start downloading it.
-                if (notification == null)
+                UpdateProgressNotification notification = new UpdateProgressNotification
                 {
-                    notification = new UpdateProgressNotification
+                    CompletionClickAction = () =>
                     {
-                        CompletionClickAction = () =>
-                        {
-                            Task.Run(restartToApplyUpdate);
-                            return true;
-                        },
-                    };
-
-                    Schedule(() => notificationOverlay.Post(notification));
-                }
+                        Task.Run(restartToApplyUpdate);
+                        return true;
+                    },
+                };
 
+                runOutsideOfGameplay(() => notificationOverlay.Post(notification));
                 notification.StartDownload();
 
                 try
                 {
                     await updateManager.DownloadUpdatesAsync(pendingUpdate, p => notification.Progress = p / 100f).ConfigureAwait(false);
-
-                    notification.State = ProgressNotificationState.Completed;
+                    runOutsideOfGameplay(() => notification.State = ProgressNotificationState.Completed);
                 }
                 catch (Exception e)
                 {
@@ -131,6 +128,17 @@ namespace osu.Desktop.Updater
             return true;
         }
 
+        private void runOutsideOfGameplay(Action action)
+        {
+            if (isInGameplay)
+            {
+                Scheduler.AddDelayed(() => runOutsideOfGameplay(action), 1000);
+                return;
+            }
+
+            action();
+        }
+
         private async Task restartToApplyUpdate()
         {
             await updateManager.WaitExitThenApplyUpdatesAsync(pendingUpdate?.TargetFullRelease).ConfigureAwait(false);

osu.Desktop/Windows/GameplayWinKeyBlocker.cs

@@ -13,7 +13,7 @@ namespace osu.Desktop.Windows
     public partial class GameplayWinKeyBlocker : Component
     {
         private Bindable<bool> disableWinKey = null!;
-        private IBindable<bool> localUserPlaying = null!;
+        private IBindable<LocalUserPlayingState> localUserPlaying = null!;
         private IBindable<bool> isActive = null!;
 
         [Resolved]
@@ -22,7 +22,7 @@ namespace osu.Desktop.Windows
         [BackgroundDependencyLoader]
         private void load(ILocalUserPlayInfo localUserInfo, OsuConfigManager config)
         {
-            localUserPlaying = localUserInfo.IsPlaying.GetBoundCopy();
+            localUserPlaying = localUserInfo.PlayingState.GetBoundCopy();
             localUserPlaying.BindValueChanged(_ => updateBlocking());
 
             isActive = host.IsActive.GetBoundCopy();
@@ -34,7 +34,7 @@ namespace osu.Desktop.Windows
 
         private void updateBlocking()
         {
-            bool shouldDisable = isActive.Value && disableWinKey.Value && localUserPlaying.Value;
+            bool shouldDisable = isActive.Value && disableWinKey.Value && localUserPlaying.Value == LocalUserPlayingState.Playing;
 
             if (shouldDisable)
                 host.InputThread.Scheduler.Add(WindowsKey.Disable);

osu.Desktop/osu.Desktop.csproj

@@ -24,7 +24,7 @@
     <ProjectReference Include="..\osu.Game.Rulesets.Taiko\osu.Game.Rulesets.Taiko.csproj" />
   </ItemGroup>
   <ItemGroup Label="Package References">
-    <PackageReference Include="System.IO.Packaging" Version="8.0.0" />
+    <PackageReference Include="System.IO.Packaging" Version="8.0.1" />
     <PackageReference Include="DiscordRichPresence" Version="1.2.1.24" />
     <PackageReference Include="Velopack" Version="0.0.630-g9c52e40" />
   </ItemGroup>

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Localisation;
@@ -31,6 +32,7 @@ using osu.Game.Scoring;
 using osu.Game.Screens.Edit.Setup;
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Catch
 {
@@ -223,10 +225,28 @@ namespace osu.Game.Rulesets.Catch
 
         public override HitObjectComposer CreateHitObjectComposer() => new CatchHitObjectComposer(this);
 
-        public override IEnumerable<SetupSection> CreateEditorSetupSections() =>
+        public override IEnumerable<Drawable> CreateEditorSetupSections() =>
         [
+            new MetadataSection(),
             new DifficultySection(),
-            new ColoursSection(),
+            new FillFlowContainer
+            {
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(SetupScreen.SPACING),
+                Children = new Drawable[]
+                {
+                    new ResourcesSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    },
+                    new ColoursSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    }
+                }
+            },
+            new DesignSection(),
         ];
 
         public override IBeatmapVerifier CreateBeatmapVerifier() => new CatchBeatmapVerifier();

osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaEditorSaving.cs

@@ -20,10 +20,10 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor
         [Test]
         public void TestKeyCountChange()
         {
-            LabelledSliderBar<float> keyCount = null!;
+            FormSliderBar<float> keyCount = null!;
 
             AddStep("go to setup screen", () => InputManager.Key(Key.F4));
-            AddUntilStep("retrieve key count slider", () => keyCount = Editor.ChildrenOfType<SetupScreen>().Single().ChildrenOfType<LabelledSliderBar<float>>().First(), () => Is.Not.Null);
+            AddUntilStep("retrieve key count slider", () => keyCount = Editor.ChildrenOfType<SetupScreen>().Single().ChildrenOfType<FormSliderBar<float>>().First(), () => Is.Not.Null);
             AddAssert("key count is 5", () => keyCount.Current.Value, () => Is.EqualTo(5));
             AddStep("change key count to 8", () =>
             {

osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs

@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         private readonly bool isForCurrentRuleset;
         private readonly double originalOverallDifficulty;
 
-        public override int Version => 20230817;
+        public override int Version => 20241007;
 
         public ManiaDifficultyCalculator(IRulesetInfo ruleset, IWorkingBeatmap beatmap)
             : base(ruleset, beatmap)

osu.Game.Rulesets.Mania/Edit/Setup/ManiaDifficultySection.cs

@@ -19,12 +19,12 @@ namespace osu.Game.Rulesets.Mania.Edit.Setup
     {
         public override LocalisableString Title => EditorSetupStrings.DifficultyHeader;
 
-        private LabelledSliderBar<float> keyCountSlider { get; set; } = null!;
-        private LabelledSwitchButton specialStyle { get; set; } = null!;
-        private LabelledSliderBar<float> healthDrainSlider { get; set; } = null!;
-        private LabelledSliderBar<float> overallDifficultySlider { get; set; } = null!;
-        private LabelledSliderBar<double> baseVelocitySlider { get; set; } = null!;
-        private LabelledSliderBar<double> tickRateSlider { get; set; } = null!;
+        private FormSliderBar<float> keyCountSlider { get; set; } = null!;
+        private FormCheckBox specialStyle { get; set; } = null!;
+        private FormSliderBar<float> healthDrainSlider { get; set; } = null!;
+        private FormSliderBar<float> overallDifficultySlider { get; set; } = null!;
+        private FormSliderBar<double> baseVelocitySlider { get; set; } = null!;
+        private FormSliderBar<double> tickRateSlider { get; set; } = null!;
 
         [Resolved]
         private Editor? editor { get; set; }
@@ -37,77 +37,81 @@ namespace osu.Game.Rulesets.Mania.Edit.Setup
         {
             Children = new Drawable[]
             {
-                keyCountSlider = new LabelledSliderBar<float>
+                keyCountSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsCsMania,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = "The number of columns in the beatmap",
+                    Caption = BeatmapsetsStrings.ShowStatsCsMania,
+                    HintText = "The number of columns in the beatmap",
                     Current = new BindableFloat(Beatmap.Difficulty.CircleSize)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 1,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                specialStyle = new LabelledSwitchButton
+                specialStyle = new FormCheckBox
                 {
-                    Label = "Use special (N+1) style",
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = "Changes one column to act as a classic \"scratch\" or \"special\" column, which can be moved around by the user's skin (to the left/right/centre). Generally used in 6K (5+1) or 8K (7+1) configurations.",
+                    Caption = "Use special (N+1) style",
+                    HintText = "Changes one column to act as a classic \"scratch\" or \"special\" column, which can be moved around by the user's skin (to the left/right/centre). Generally used in 6K (5+1) or 8K (7+1) configurations.",
                     Current = { Value = Beatmap.BeatmapInfo.SpecialStyle }
                 },
-                healthDrainSlider = new LabelledSliderBar<float>
+                healthDrainSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsDrain,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.DrainRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsDrain,
+                    HintText = EditorSetupStrings.DrainRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.DrainRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                overallDifficultySlider = new LabelledSliderBar<float>
+                overallDifficultySlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAccuracy,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.OverallDifficultyDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAccuracy,
+                    HintText = EditorSetupStrings.OverallDifficultyDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.OverallDifficulty)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                baseVelocitySlider = new LabelledSliderBar<double>
+                baseVelocitySlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.BaseVelocity,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.BaseVelocityDescription,
+                    Caption = EditorSetupStrings.BaseVelocity,
+                    HintText = EditorSetupStrings.BaseVelocityDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderMultiplier)
                     {
                         Default = 1.4,
                         MinValue = 0.4,
                         MaxValue = 3.6,
                         Precision = 0.01f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                tickRateSlider = new LabelledSliderBar<double>
+                tickRateSlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.TickRate,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.TickRateDescription,
+                    Caption = EditorSetupStrings.TickRate,
+                    HintText = EditorSetupStrings.TickRateDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderTickRate)
                     {
                         Default = 1,
                         MinValue = 1,
                         MaxValue = 4,
                         Precision = 1,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
             };
 

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -419,9 +419,12 @@ namespace osu.Game.Rulesets.Mania
             return new ManiaFilterCriteria();
         }
 
-        public override IEnumerable<SetupSection> CreateEditorSetupSections() =>
+        public override IEnumerable<Drawable> CreateEditorSetupSections() =>
         [
+            new MetadataSection(),
             new ManiaDifficultySection(),
+            new ResourcesSection(),
+            new DesignSection(),
         ];
 
         public int GetKeyCount(IBeatmapInfo beatmapInfo, IReadOnlyList<Mod>? mods = null)

osu.Game.Rulesets.Osu.Tests/OsuDifficultyCalculatorTest.cs

@@ -15,22 +15,22 @@ namespace osu.Game.Rulesets.Osu.Tests
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Osu.Tests";
 
-        [TestCase(6.710442985146793d, 239, "diffcalc-test")]
-        [TestCase(1.4386882251130073d, 54, "zero-length-sliders")]
-        [TestCase(0.42506480230838789d, 4, "very-fast-slider")]
-        [TestCase(0.14102693012101306d, 2, "nan-slider")]
+        [TestCase(6.7171144000821119d, 239, "diffcalc-test")]
+        [TestCase(1.4485749025771304d, 54, "zero-length-sliders")]
+        [TestCase(0.42630400627180914d, 4, "very-fast-slider")]
+        [TestCase(0.14143808967817237d, 2, "nan-slider")]
         public void Test(double expectedStarRating, int expectedMaxCombo, string name)
             => base.Test(expectedStarRating, expectedMaxCombo, name);
 
-        [TestCase(8.9742952703071666d, 239, "diffcalc-test")]
-        [TestCase(1.743180218215227d, 54, "zero-length-sliders")]
-        [TestCase(0.55071082800473514d, 4, "very-fast-slider")]
+        [TestCase(8.9825709931204205d, 239, "diffcalc-test")]
+        [TestCase(1.7550169162648608d, 54, "zero-length-sliders")]
+        [TestCase(0.55231632896800109d, 4, "very-fast-slider")]
         public void TestClockRateAdjusted(double expectedStarRating, int expectedMaxCombo, string name)
             => Test(expectedStarRating, expectedMaxCombo, name, new OsuModDoubleTime());
 
-        [TestCase(6.710442985146793d, 239, "diffcalc-test")]
-        [TestCase(1.4386882251130073d, 54, "zero-length-sliders")]
-        [TestCase(0.42506480230838789d, 4, "very-fast-slider")]
+        [TestCase(6.7171144000821119d, 239, "diffcalc-test")]
+        [TestCase(1.4485749025771304d, 54, "zero-length-sliders")]
+        [TestCase(0.42630400627180914d, 4, "very-fast-slider")]
         public void TestClassicMod(double expectedStarRating, int expectedMaxCombo, string name)
             => Test(expectedStarRating, expectedMaxCombo, name, new OsuModClassic());
 

osu.Game.Rulesets.Osu/Difficulty/Evaluators/RhythmEvaluator.cs

@@ -2,6 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using osu.Game.Rulesets.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Osu.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Osu.Objects;
@@ -10,8 +12,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
 {
     public static class RhythmEvaluator
     {
-        private const int history_time_max = 5000; // 5 seconds of calculatingRhythmBonus max.
-        private const double rhythm_multiplier = 0.75;
+        private const int history_time_max = 5 * 1000; // 5 seconds
+        private const int history_objects_max = 32;
+        private const double rhythm_overall_multiplier = 0.95;
+        private const double rhythm_ratio_multiplier = 12.0;
 
         /// <summary>
         /// Calculates a rhythm multiplier for the difficulty of the tap associated with historic data of the current <see cref="OsuDifficultyHitObject"/>.
@@ -21,15 +25,22 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
             if (current.BaseObject is Spinner)
                 return 0;
 
-            int previousIslandSize = 0;
-
             double rhythmComplexitySum = 0;
-            int islandSize = 1;
+
+            double deltaDifferenceEpsilon = ((OsuDifficultyHitObject)current).HitWindowGreat * 0.3;
+
+            var island = new Island(deltaDifferenceEpsilon);
+            var previousIsland = new Island(deltaDifferenceEpsilon);
+
+            // we can't use dictionary here because we need to compare island with a tolerance
+            // which is impossible to pass into the hash comparer
+            var islandCounts = new List<(Island Island, int Count)>();
+
             double startRatio = 0; // store the ratio of the current start of an island to buff for tighter rhythms
 
             bool firstDeltaSwitch = false;
 
-            int historicalNoteCount = Math.Min(current.Index, 32);
+            int historicalNoteCount = Math.Min(current.Index, history_objects_max);
 
             int rhythmStart = 0;
 
@@ -39,74 +50,177 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
             OsuDifficultyHitObject prevObj = (OsuDifficultyHitObject)current.Previous(rhythmStart);
             OsuDifficultyHitObject lastObj = (OsuDifficultyHitObject)current.Previous(rhythmStart + 1);
 
+            // we go from the furthest object back to the current one
             for (int i = rhythmStart; i > 0; i--)
             {
                 OsuDifficultyHitObject currObj = (OsuDifficultyHitObject)current.Previous(i - 1);
 
-                double currHistoricalDecay = (history_time_max - (current.StartTime - currObj.StartTime)) / history_time_max; // scales note 0 to 1 from history to now
+                // scales note 0 to 1 from history to now
+                double timeDecay = (history_time_max - (current.StartTime - currObj.StartTime)) / history_time_max;
+                double noteDecay = (double)(historicalNoteCount - i) / historicalNoteCount;
 
-                currHistoricalDecay = Math.Min((double)(historicalNoteCount - i) / historicalNoteCount, currHistoricalDecay); // either we're limited by time or limited by object count.
+                double currHistoricalDecay = Math.Min(noteDecay, timeDecay); // either we're limited by time or limited by object count.
 
                 double currDelta = currObj.StrainTime;
                 double prevDelta = prevObj.StrainTime;
                 double lastDelta = lastObj.StrainTime;
-                double currRatio = 1.0 + 6.0 * Math.Min(0.5, Math.Pow(Math.Sin(Math.PI / (Math.Min(prevDelta, currDelta) / Math.Max(prevDelta, currDelta))), 2)); // fancy function to calculate rhythmbonuses.
 
-                double windowPenalty = Math.Min(1, Math.Max(0, Math.Abs(prevDelta - currDelta) - currObj.HitWindowGreat * 0.3) / (currObj.HitWindowGreat * 0.3));
+                // calculate how much current delta difference deserves a rhythm bonus
+                // this function is meant to reduce rhythm bonus for deltas that are multiples of each other (i.e 100 and 200)
+                double deltaDifferenceRatio = Math.Min(prevDelta, currDelta) / Math.Max(prevDelta, currDelta);
+                double currRatio = 1.0 + rhythm_ratio_multiplier * Math.Min(0.5, Math.Pow(Math.Sin(Math.PI / deltaDifferenceRatio), 2));
 
-                windowPenalty = Math.Min(1, windowPenalty);
+                // reduce ratio bonus if delta difference is too big
+                double fraction = Math.Max(prevDelta / currDelta, currDelta / prevDelta);
+                double fractionMultiplier = Math.Clamp(2.0 - fraction / 8.0, 0.0, 1.0);
 
-                double effectiveRatio = windowPenalty * currRatio;
+                double windowPenalty = Math.Min(1, Math.Max(0, Math.Abs(prevDelta - currDelta) - deltaDifferenceEpsilon) / deltaDifferenceEpsilon);
+
+                double effectiveRatio = windowPenalty * currRatio * fractionMultiplier;
 
                 if (firstDeltaSwitch)
                 {
-                    if (!(prevDelta > 1.25 * currDelta || prevDelta * 1.25 < currDelta))
+                    if (Math.Abs(prevDelta - currDelta) < deltaDifferenceEpsilon)
                     {
-                        if (islandSize < 7)
-                            islandSize++; // island is still progressing, count size.
+                        // island is still progressing
+                        island.AddDelta((int)currDelta);
                     }
                     else
                     {
-                        if (currObj.BaseObject is Slider) // bpm change is into slider, this is easy acc window
+                        // bpm change is into slider, this is easy acc window
+                        if (currObj.BaseObject is Slider)
                             effectiveRatio *= 0.125;
 
-                        if (prevObj.BaseObject is Slider) // bpm change was from a slider, this is easier typically than circle -> circle
-                            effectiveRatio *= 0.25;
+                        // bpm change was from a slider, this is easier typically than circle -> circle
+                        // unintentional side effect is that bursts with kicksliders at the ends might have lower difficulty than bursts without sliders
+                        if (prevObj.BaseObject is Slider)
+                            effectiveRatio *= 0.3;
 
-                        if (previousIslandSize == islandSize) // repeated island size (ex: triplet -> triplet)
-                            effectiveRatio *= 0.25;
+                        // repeated island polarity (2 -> 4, 3 -> 5)
+                        if (island.IsSimilarPolarity(previousIsland))
+                            effectiveRatio *= 0.5;
 
-                        if (previousIslandSize % 2 == islandSize % 2) // repeated island polartiy (2 -> 4, 3 -> 5)
-                            effectiveRatio *= 0.50;
-
-                        if (lastDelta > prevDelta + 10 && prevDelta > currDelta + 10) // previous increase happened a note ago, 1/1->1/2-1/4, dont want to buff this.
+                        // previous increase happened a note ago, 1/1->1/2-1/4, dont want to buff this.
+                        if (lastDelta > prevDelta + deltaDifferenceEpsilon && prevDelta > currDelta + deltaDifferenceEpsilon)
                             effectiveRatio *= 0.125;
 
-                        rhythmComplexitySum += Math.Sqrt(effectiveRatio * startRatio) * currHistoricalDecay * Math.Sqrt(4 + islandSize) / 2 * Math.Sqrt(4 + previousIslandSize) / 2;
+                        // repeated island size (ex: triplet -> triplet)
+                        // TODO: remove this nerf since its staying here only for balancing purposes because of the flawed ratio calculation
+                        if (previousIsland.DeltaCount == island.DeltaCount)
+                            effectiveRatio *= 0.5;
+
+                        var islandCount = islandCounts.FirstOrDefault(x => x.Island.Equals(island));
+
+                        if (islandCount != default)
+                        {
+                            int countIndex = islandCounts.IndexOf(islandCount);
+
+                            // only add island to island counts if they're going one after another
+                            if (previousIsland.Equals(island))
+                                islandCount.Count++;
+
+                            // repeated island (ex: triplet -> triplet)
+                            double power = logistic(island.Delta, 2.75, 0.24, 14);
+                            effectiveRatio *= Math.Min(3.0 / islandCount.Count, Math.Pow(1.0 / islandCount.Count, power));
+
+                            islandCounts[countIndex] = (islandCount.Island, islandCount.Count);
+                        }
+                        else
+                        {
+                            islandCounts.Add((island, 1));
+                        }
+
+                        // scale down the difficulty if the object is doubletappable
+                        double doubletapness = prevObj.GetDoubletapness(currObj);
+                        effectiveRatio *= 1 - doubletapness * 0.75;
+
+                        rhythmComplexitySum += Math.Sqrt(effectiveRatio * startRatio) * currHistoricalDecay;
 
                         startRatio = effectiveRatio;
 
-                        previousIslandSize = islandSize; // log the last island size.
+                        previousIsland = island;
 
-                        if (prevDelta * 1.25 < currDelta) // we're slowing down, stop counting
-                            firstDeltaSwitch = false; // if we're speeding up, this stays true and  we keep counting island size.
+                        if (prevDelta + deltaDifferenceEpsilon < currDelta) // we're slowing down, stop counting
+                            firstDeltaSwitch = false; // if we're speeding up, this stays true and we keep counting island size.
 
-                        islandSize = 1;
+                        island = new Island((int)currDelta, deltaDifferenceEpsilon);
                     }
                 }
-                else if (prevDelta > 1.25 * currDelta) // we want to be speeding up.
+                else if (prevDelta > currDelta + deltaDifferenceEpsilon) // we're speeding up
                 {
                     // Begin counting island until we change speed again.
                     firstDeltaSwitch = true;
+
+                    // bpm change is into slider, this is easy acc window
+                    if (currObj.BaseObject is Slider)
+                        effectiveRatio *= 0.6;
+
+                    // bpm change was from a slider, this is easier typically than circle -> circle
+                    // unintentional side effect is that bursts with kicksliders at the ends might have lower difficulty than bursts without sliders
+                    if (prevObj.BaseObject is Slider)
+                        effectiveRatio *= 0.6;
+
                     startRatio = effectiveRatio;
-                    islandSize = 1;
+
+                    island = new Island((int)currDelta, deltaDifferenceEpsilon);
                 }
 
                 lastObj = prevObj;
                 prevObj = currObj;
             }
 
-            return Math.Sqrt(4 + rhythmComplexitySum * rhythm_multiplier) / 2; //produces multiplier that can be applied to strain. range [1, infinity) (not really though)
+            return Math.Sqrt(4 + rhythmComplexitySum * rhythm_overall_multiplier) / 2.0; // produces multiplier that can be applied to strain. range [1, infinity) (not really though)
+        }
+
+        private static double logistic(double x, double maxValue, double multiplier, double offset) => (maxValue / (1 + Math.Pow(Math.E, offset - (multiplier * x))));
+
+        private class Island : IEquatable<Island>
+        {
+            private readonly double deltaDifferenceEpsilon;
+
+            public Island(double epsilon)
+            {
+                deltaDifferenceEpsilon = epsilon;
+            }
+
+            public Island(int delta, double epsilon)
+            {
+                deltaDifferenceEpsilon = epsilon;
+                Delta = Math.Max(delta, OsuDifficultyHitObject.MIN_DELTA_TIME);
+                DeltaCount++;
+            }
+
+            public int Delta { get; private set; } = int.MaxValue;
+            public int DeltaCount { get; private set; }
+
+            public void AddDelta(int delta)
+            {
+                if (Delta == int.MaxValue)
+                    Delta = Math.Max(delta, OsuDifficultyHitObject.MIN_DELTA_TIME);
+
+                DeltaCount++;
+            }
+
+            public bool IsSimilarPolarity(Island other)
+            {
+                // TODO: consider islands to be of similar polarity only if they're having the same average delta (we don't want to consider 3 singletaps similar to a triple)
+                //       naively adding delta check here breaks _a lot_ of maps because of the flawed ratio calculation
+                return DeltaCount % 2 == other.DeltaCount % 2;
+            }
+
+            public bool Equals(Island? other)
+            {
+                if (other == null)
+                    return false;
+
+                return Math.Abs(Delta - other.Delta) < deltaDifferenceEpsilon &&
+                       DeltaCount == other.DeltaCount;
+            }
+
+            public override string ToString()
+            {
+                return $"{Delta}x{DeltaCount}";
+            }
         }
     }
 }

osu.Game.Rulesets.Osu/Difficulty/Evaluators/SpeedEvaluator.cs

@@ -13,6 +13,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
         private const double single_spacing_threshold = 125; // 1.25 circles distance between centers
         private const double min_speed_bonus = 75; // ~200BPM
         private const double speed_balancing_factor = 40;
+        private const double distance_multiplier = 0.94;
 
         /// <summary>
         /// Evaluates the difficulty of tapping the current object, based on:
@@ -30,32 +31,20 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
             // derive strainTime for calculation
             var osuCurrObj = (OsuDifficultyHitObject)current;
             var osuPrevObj = current.Index > 0 ? (OsuDifficultyHitObject)current.Previous(0) : null;
-            var osuNextObj = (OsuDifficultyHitObject?)current.Next(0);
 
             double strainTime = osuCurrObj.StrainTime;
-            double doubletapness = 1;
-
-            // Nerf doubletappable doubles.
-            if (osuNextObj != null)
-            {
-                double currDeltaTime = Math.Max(1, osuCurrObj.DeltaTime);
-                double nextDeltaTime = Math.Max(1, osuNextObj.DeltaTime);
-                double deltaDifference = Math.Abs(nextDeltaTime - currDeltaTime);
-                double speedRatio = currDeltaTime / Math.Max(currDeltaTime, deltaDifference);
-                double windowRatio = Math.Pow(Math.Min(1, currDeltaTime / osuCurrObj.HitWindowGreat), 2);
-                doubletapness = Math.Pow(speedRatio, 1 - windowRatio);
-            }
+            double doubletapness = 1.0 - osuCurrObj.GetDoubletapness((OsuDifficultyHitObject?)osuCurrObj.Next(0));
 
             // Cap deltatime to the OD 300 hitwindow.
             // 0.93 is derived from making sure 260bpm OD8 streams aren't nerfed harshly, whilst 0.92 limits the effect of the cap.
             strainTime /= Math.Clamp((strainTime / osuCurrObj.HitWindowGreat) / 0.93, 0.92, 1);
 
-            // speedBonus will be 1.0 for BPM < 200
-            double speedBonus = 1.0;
+            // speedBonus will be 0.0 for BPM < 200
+            double speedBonus = 0.0;
 
             // Add additional scaling bonus for streams/bursts higher than 200bpm
             if (strainTime < min_speed_bonus)
-                speedBonus = 1 + 0.75 * Math.Pow((min_speed_bonus - strainTime) / speed_balancing_factor, 2);
+                speedBonus = 0.75 * Math.Pow((min_speed_bonus - strainTime) / speed_balancing_factor, 2);
 
             double travelDistance = osuPrevObj?.TravelDistance ?? 0;
             double distance = travelDistance + osuCurrObj.MinimumJumpDistance;
@@ -63,11 +52,11 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
             // Cap distance at single_spacing_threshold
             distance = Math.Min(distance, single_spacing_threshold);
 
-            // Max distance bonus is 2 at single_spacing_threshold
-            double distanceBonus = 1 + Math.Pow(distance / single_spacing_threshold, 3.5);
+            // Max distance bonus is 1 * `distance_multiplier` at single_spacing_threshold
+            double distanceBonus = Math.Pow(distance / single_spacing_threshold, 3.95) * distance_multiplier;
 
             // Base difficulty with all bonuses
-            double difficulty = speedBonus * distanceBonus * 1000 / strainTime;
+            double difficulty = (1 + speedBonus + distanceBonus) * 1000 / strainTime;
 
             // Apply penalty if there's doubletappable doubles
             return difficulty * doubletapness;

osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyAttributes.cs

@@ -46,6 +46,12 @@ namespace osu.Game.Rulesets.Osu.Difficulty
         [JsonProperty("slider_factor")]
         public double SliderFactor { get; set; }
 
+        [JsonProperty("aim_difficult_strain_count")]
+        public double AimDifficultStrainCount { get; set; }
+
+        [JsonProperty("speed_difficult_strain_count")]
+        public double SpeedDifficultStrainCount { get; set; }
+
         /// <summary>
         /// The perceived approach rate inclusive of rate-adjusting mods (DT/HT/etc).
         /// </summary>
@@ -99,6 +105,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                 yield return (ATTRIB_ID_FLASHLIGHT, FlashlightDifficulty);
 
             yield return (ATTRIB_ID_SLIDER_FACTOR, SliderFactor);
+
+            yield return (ATTRIB_ID_AIM_DIFFICULT_STRAIN_COUNT, AimDifficultStrainCount);
+            yield return (ATTRIB_ID_SPEED_DIFFICULT_STRAIN_COUNT, SpeedDifficultStrainCount);
             yield return (ATTRIB_ID_SPEED_NOTE_COUNT, SpeedNoteCount);
         }
 
@@ -113,8 +122,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             StarRating = values[ATTRIB_ID_DIFFICULTY];
             FlashlightDifficulty = values.GetValueOrDefault(ATTRIB_ID_FLASHLIGHT);
             SliderFactor = values[ATTRIB_ID_SLIDER_FACTOR];
+            AimDifficultStrainCount = values[ATTRIB_ID_AIM_DIFFICULT_STRAIN_COUNT];
+            SpeedDifficultStrainCount = values[ATTRIB_ID_SPEED_DIFFICULT_STRAIN_COUNT];
             SpeedNoteCount = values[ATTRIB_ID_SPEED_NOTE_COUNT];
-
             DrainRate = onlineInfo.DrainRate;
             HitCircleCount = onlineInfo.CircleCount;
             SliderCount = onlineInfo.SliderCount;

osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs

@@ -24,7 +24,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
     {
         private const double difficulty_multiplier = 0.0675;
 
-        public override int Version => 20220902;
+        public override int Version => 20241007;
 
         public OsuDifficultyCalculator(IRulesetInfo ruleset, IWorkingBeatmap beatmap)
             : base(ruleset, beatmap)
@@ -48,6 +48,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty
 
             double sliderFactor = aimRating > 0 ? aimRatingNoSliders / aimRating : 1;
 
+            double aimDifficultyStrainCount = ((OsuStrainSkill)skills[0]).CountDifficultStrains();
+            double speedDifficultyStrainCount = ((OsuStrainSkill)skills[2]).CountDifficultStrains();
+
             if (mods.Any(m => m is OsuModTouchDevice))
             {
                 aimRating = Math.Pow(aimRating, 0.8);
@@ -100,6 +103,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                 SpeedNoteCount = speedNotes,
                 FlashlightDifficulty = flashlightRating,
                 SliderFactor = sliderFactor,
+                AimDifficultStrainCount = aimDifficultyStrainCount,
+                SpeedDifficultStrainCount = speedDifficultyStrainCount,
                 ApproachRate = preempt > 1200 ? (1800 - preempt) / 120 : (1200 - preempt) / 150 + 5,
                 OverallDifficulty = (80 - hitWindowGreat) / 6,
                 DrainRate = drainRate,

osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs

@@ -14,7 +14,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty
 {
     public class OsuPerformanceCalculator : PerformanceCalculator
     {
-        public const double PERFORMANCE_BASE_MULTIPLIER = 1.14; // This is being adjusted to keep the final pp value scaled around what it used to be when changing things.
+        public const double PERFORMANCE_BASE_MULTIPLIER = 1.15; // This is being adjusted to keep the final pp value scaled around what it used to be when changing things.
+
+        private bool usingClassicSliderAccuracy;
 
         private double accuracy;
         private int scoreMaxCombo;
@@ -34,6 +36,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
         {
             var osuAttributes = (OsuDifficultyAttributes)attributes;
 
+            usingClassicSliderAccuracy = score.Mods.OfType<OsuModClassic>().Any(m => m.NoSliderHeadAccuracy.Value);
+
             accuracy = score.Accuracy;
             scoreMaxCombo = score.MaxCombo;
             countGreat = score.Statistics.GetValueOrDefault(HitResult.Great);
@@ -93,11 +97,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                                  (totalHits > 2000 ? Math.Log10(totalHits / 2000.0) * 0.5 : 0.0);
             aimValue *= lengthBonus;
 
-            // Penalize misses by assessing # of misses relative to the total # of objects. Default a 3% reduction for any # of misses.
             if (effectiveMissCount > 0)
-                aimValue *= 0.97 * Math.Pow(1 - Math.Pow(effectiveMissCount / totalHits, 0.775), effectiveMissCount);
-
-            aimValue *= getComboScalingFactor(attributes);
+                aimValue *= calculateMissPenalty(effectiveMissCount, attributes.AimDifficultStrainCount);
 
             double approachRateFactor = 0.0;
             if (attributes.ApproachRate > 10.33)
@@ -146,11 +147,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                                  (totalHits > 2000 ? Math.Log10(totalHits / 2000.0) * 0.5 : 0.0);
             speedValue *= lengthBonus;
 
-            // Penalize misses by assessing # of misses relative to the total # of objects. Default a 3% reduction for any # of misses.
             if (effectiveMissCount > 0)
-                speedValue *= 0.97 * Math.Pow(1 - Math.Pow(effectiveMissCount / totalHits, 0.775), Math.Pow(effectiveMissCount, .875));
-
-            speedValue *= getComboScalingFactor(attributes);
+                speedValue *= calculateMissPenalty(effectiveMissCount, attributes.SpeedDifficultStrainCount);
 
             double approachRateFactor = 0.0;
             if (attributes.ApproachRate > 10.33)
@@ -177,7 +175,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             double relevantAccuracy = attributes.SpeedNoteCount == 0 ? 0 : (relevantCountGreat * 6.0 + relevantCountOk * 2.0 + relevantCountMeh) / (attributes.SpeedNoteCount * 6.0);
 
             // Scale the speed value with accuracy and OD.
-            speedValue *= (0.95 + Math.Pow(attributes.OverallDifficulty, 2) / 750) * Math.Pow((accuracy + relevantAccuracy) / 2.0, (14.5 - Math.Max(attributes.OverallDifficulty, 8)) / 2);
+            speedValue *= (0.95 + Math.Pow(attributes.OverallDifficulty, 2) / 750) * Math.Pow((accuracy + relevantAccuracy) / 2.0, (14.5 - attributes.OverallDifficulty) / 2);
 
             // Scale the speed value with # of 50s to punish doubletapping.
             speedValue *= Math.Pow(0.99, countMeh < totalHits / 500.0 ? 0 : countMeh - totalHits / 500.0);
@@ -193,6 +191,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             // This percentage only considers HitCircles of any value - in this part of the calculation we focus on hitting the timing hit window.
             double betterAccuracyPercentage;
             int amountHitObjectsWithAccuracy = attributes.HitCircleCount;
+            if (!usingClassicSliderAccuracy)
+                amountHitObjectsWithAccuracy += attributes.SliderCount;
 
             if (amountHitObjectsWithAccuracy > 0)
                 betterAccuracyPercentage = ((countGreat - (totalHits - amountHitObjectsWithAccuracy)) * 6 + countOk * 2 + countMeh) / (double)(amountHitObjectsWithAccuracy * 6);
@@ -265,6 +265,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             return Math.Max(countMiss, comboBasedMissCount);
         }
 
+        // Miss penalty assumes that a player will miss on the hardest parts of a map,
+        // so we use the amount of relatively difficult sections to adjust miss penalty
+        // to make it more punishing on maps with lower amount of hard sections.
+        private double calculateMissPenalty(double missCount, double difficultStrainCount) => 0.96 / ((missCount / (4 * Math.Pow(Math.Log(difficultStrainCount), 0.94))) + 1);
         private double getComboScalingFactor(OsuDifficultyAttributes attributes) => attributes.MaxCombo <= 0 ? 1.0 : Math.Min(Math.Pow(scoreMaxCombo, 0.8) / Math.Pow(attributes.MaxCombo, 0.8), 1.0);
         private int totalHits => countGreat + countOk + countMeh + countMiss;
     }

osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs

@@ -20,7 +20,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
         /// </summary>
         public const int NORMALISED_RADIUS = 50; // Change radius to 50 to make 100 the diameter. Easier for mental maths.
 
-        private const int min_delta_time = 25;
+        public const int MIN_DELTA_TIME = 25;
+
         private const float maximum_slider_radius = NORMALISED_RADIUS * 2.4f;
         private const float assumed_slider_radius = NORMALISED_RADIUS * 1.8f;
 
@@ -93,7 +94,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
             this.lastObject = (OsuHitObject)lastObject;
 
             // Capped to 25ms to prevent difficulty calculation breaking from simultaneous objects.
-            StrainTime = Math.Max(DeltaTime, min_delta_time);
+            StrainTime = Math.Max(DeltaTime, MIN_DELTA_TIME);
 
             if (BaseObject is Slider sliderObject)
             {
@@ -136,6 +137,24 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
             return Math.Clamp((time - fadeInStartTime) / fadeInDuration, 0.0, 1.0);
         }
 
+        /// <summary>
+        /// Returns how possible is it to doubletap this object together with the next one and get perfect judgement in range from 0 to 1
+        /// </summary>
+        public double GetDoubletapness(OsuDifficultyHitObject? osuNextObj)
+        {
+            if (osuNextObj != null)
+            {
+                double currDeltaTime = Math.Max(1, DeltaTime);
+                double nextDeltaTime = Math.Max(1, osuNextObj.DeltaTime);
+                double deltaDifference = Math.Abs(nextDeltaTime - currDeltaTime);
+                double speedRatio = currDeltaTime / Math.Max(currDeltaTime, deltaDifference);
+                double windowRatio = Math.Pow(Math.Min(1, currDeltaTime / HitWindowGreat), 2);
+                return 1.0 - Math.Pow(speedRatio, 1 - windowRatio);
+            }
+
+            return 0;
+        }
+
         private void setDistances(double clockRate)
         {
             if (BaseObject is Slider currentSlider)
@@ -143,7 +162,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
                 computeSliderCursorPosition(currentSlider);
                 // Bonus for repeat sliders until a better per nested object strain system can be achieved.
                 TravelDistance = currentSlider.LazyTravelDistance * (float)Math.Pow(1 + currentSlider.RepeatCount / 2.5, 1.0 / 2.5);
-                TravelTime = Math.Max(currentSlider.LazyTravelTime / clockRate, min_delta_time);
+                TravelTime = Math.Max(currentSlider.LazyTravelTime / clockRate, MIN_DELTA_TIME);
             }
 
             // We don't need to calculate either angle or distance when one of the last->curr objects is a spinner
@@ -167,8 +186,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
 
             if (lastObject is Slider lastSlider)
             {
-                double lastTravelTime = Math.Max(lastSlider.LazyTravelTime / clockRate, min_delta_time);
-                MinimumJumpTime = Math.Max(StrainTime - lastTravelTime, min_delta_time);
+                double lastTravelTime = Math.Max(lastSlider.LazyTravelTime / clockRate, MIN_DELTA_TIME);
+                MinimumJumpTime = Math.Max(StrainTime - lastTravelTime, MIN_DELTA_TIME);
 
                 //
                 // There are two types of slider-to-object patterns to consider in order to better approximate the real movement a player will take to jump between the hitobjects.

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

@@ -23,7 +23,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
 
         private double currentStrain;
 
-        private double skillMultiplier => 24.963;
+        private double skillMultiplier => 25.18;
         private double strainDecayBase => 0.15;
 
         private double strainDecay(double ms) => Math.Pow(strainDecayBase, ms / 1000);
@@ -34,6 +34,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
         {
             currentStrain *= strainDecay(current.DeltaTime);
             currentStrain += AimEvaluator.EvaluateDifficultyOf(current, withSliders) * skillMultiplier;
+            ObjectStrains.Add(currentStrain);
 
             return currentStrain;
         }

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

@@ -23,6 +23,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
         /// </summary>
         protected virtual double ReducedStrainBaseline => 0.75;
 
+        protected List<double> ObjectStrains = new List<double>();
+        protected double Difficulty;
+
         protected OsuStrainSkill(Mod[] mods)
             : base(mods)
         {
@@ -30,7 +33,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
 
         public override double DifficultyValue()
         {
-            double difficulty = 0;
+            Difficulty = 0;
             double weight = 1;
 
             // Sections with 0 strain are excluded to avoid worst-case time complexity of the following sort (e.g. /b/2351871).
@@ -50,11 +53,25 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
             // We're sorting from highest to lowest strain.
             foreach (double strain in strains.OrderDescending())
             {
-                difficulty += strain * weight;
+                Difficulty += strain * weight;
                 weight *= DecayWeight;
             }
 
-            return difficulty;
+            return Difficulty;
+        }
+
+        /// <summary>
+        /// Returns the number of strains weighted against the top strain.
+        /// The result is scaled by clock rate as it affects the total number of strains.
+        /// </summary>
+        public double CountDifficultStrains()
+        {
+            if (Difficulty == 0)
+                return 0.0;
+
+            double consistentTopStrain = Difficulty / 10; // What would the top strain be if all strain values were identical
+            // Use a weighted sum of all strains. Constants are arbitrary and give nice values
+            return ObjectStrains.Sum(s => 1.1 / (1 + Math.Exp(-10 * (s / consistentTopStrain - 0.88))));
         }
 
         public static double DifficultyToPerformance(double difficulty) => Math.Pow(5.0 * Math.Max(1.0, difficulty / 0.0675) - 4.0, 3.0) / 100000.0;

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

@@ -6,7 +6,6 @@ using osu.Game.Rulesets.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Difficulty.Evaluators;
 using osu.Game.Rulesets.Osu.Difficulty.Preprocessing;
-using System.Collections.Generic;
 using System.Linq;
 
 namespace osu.Game.Rulesets.Osu.Difficulty.Skills
@@ -24,8 +23,6 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
 
         protected override int ReducedSectionCount => 5;
 
-        private readonly List<double> objectStrains = new List<double>();
-
         public Speed(Mod[] mods)
             : base(mods)
         {
@@ -43,23 +40,21 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
             currentRhythm = RhythmEvaluator.EvaluateDifficultyOf(current);
 
             double totalStrain = currentStrain * currentRhythm;
-
-            objectStrains.Add(totalStrain);
+            ObjectStrains.Add(totalStrain);
 
             return totalStrain;
         }
 
         public double RelevantNoteCount()
         {
-            if (objectStrains.Count == 0)
+            if (ObjectStrains.Count == 0)
                 return 0;
 
-            double maxStrain = objectStrains.Max();
-
+            double maxStrain = ObjectStrains.Max();
             if (maxStrain == 0)
                 return 0;
 
-            return objectStrains.Sum(strain => 1.0 / (1.0 + Math.Exp(-(strain / maxStrain * 12.0 - 6.0))));
+            return ObjectStrains.Sum(strain => 1.0 / (1.0 + Math.Exp(-(strain / maxStrain * 12.0 - 6.0))));
         }
     }
 }

osu.Game.Rulesets.Osu/Edit/Blueprints/GridPlacementBlueprint.cs

@@ -0,0 +1,126 @@
+// 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.Input.Events;
+using osu.Game.Rulesets.Edit;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Osu.Edit.Blueprints
+{
+    public partial class GridPlacementBlueprint : PlacementBlueprint
+    {
+        [Resolved]
+        private HitObjectComposer? hitObjectComposer { get; set; }
+
+        private OsuGridToolboxGroup gridToolboxGroup = null!;
+        private Vector2 originalOrigin;
+        private float originalSpacing;
+        private float originalRotation;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGridToolboxGroup gridToolboxGroup)
+        {
+            this.gridToolboxGroup = gridToolboxGroup;
+            originalOrigin = gridToolboxGroup.StartPosition.Value;
+            originalSpacing = gridToolboxGroup.Spacing.Value;
+            originalRotation = gridToolboxGroup.GridLinesRotation.Value;
+        }
+
+        public override void EndPlacement(bool commit)
+        {
+            if (!commit && PlacementActive != PlacementState.Finished)
+            {
+                gridToolboxGroup.StartPosition.Value = originalOrigin;
+                gridToolboxGroup.Spacing.Value = originalSpacing;
+                if (!gridToolboxGroup.GridLinesRotation.Disabled)
+                    gridToolboxGroup.GridLinesRotation.Value = originalRotation;
+            }
+
+            base.EndPlacement(commit);
+
+            // You typically only place the grid once, so we switch back to the last tool after placement.
+            if (commit && hitObjectComposer is OsuHitObjectComposer osuHitObjectComposer)
+                osuHitObjectComposer.SetLastTool();
+        }
+
+        protected override bool OnClick(ClickEvent e)
+        {
+            if (e.Button == MouseButton.Left)
+            {
+                switch (PlacementActive)
+                {
+                    case PlacementState.Waiting:
+                        BeginPlacement(true);
+                        return true;
+
+                    case PlacementState.Active:
+                        EndPlacement(true);
+                        return true;
+                }
+            }
+
+            return base.OnClick(e);
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (e.Button == MouseButton.Right)
+            {
+                // Reset the grid to the default values.
+                gridToolboxGroup.StartPosition.Value = gridToolboxGroup.StartPosition.Default;
+                gridToolboxGroup.Spacing.Value = gridToolboxGroup.Spacing.Default;
+                if (!gridToolboxGroup.GridLinesRotation.Disabled)
+                    gridToolboxGroup.GridLinesRotation.Value = gridToolboxGroup.GridLinesRotation.Default;
+                EndPlacement(true);
+                return true;
+            }
+
+            return base.OnMouseDown(e);
+        }
+
+        protected override bool OnDragStart(DragStartEvent e)
+        {
+            if (e.Button == MouseButton.Left)
+            {
+                BeginPlacement(true);
+                return true;
+            }
+
+            return base.OnDragStart(e);
+        }
+
+        protected override void OnDragEnd(DragEndEvent e)
+        {
+            if (PlacementActive == PlacementState.Active)
+                EndPlacement(true);
+
+            base.OnDragEnd(e);
+        }
+
+        public override SnapType SnapType => ~SnapType.GlobalGrids;
+
+        public override void UpdateTimeAndPosition(SnapResult result)
+        {
+            var pos = ToLocalSpace(result.ScreenSpacePosition);
+
+            if (PlacementActive != PlacementState.Active)
+                gridToolboxGroup.StartPosition.Value = pos;
+            else
+            {
+                // Default to the original spacing and rotation if the distance is too small.
+                if (Vector2.Distance(gridToolboxGroup.StartPosition.Value, pos) < 2)
+                {
+                    gridToolboxGroup.Spacing.Value = originalSpacing;
+                    if (!gridToolboxGroup.GridLinesRotation.Disabled)
+                        gridToolboxGroup.GridLinesRotation.Value = originalRotation;
+                }
+                else
+                {
+                    gridToolboxGroup.SetGridFromPoints(gridToolboxGroup.StartPosition.Value, pos);
+                }
+            }
+        }
+    }
+}

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs

@@ -178,7 +178,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
         private bool isSplittable(PathControlPointPiece<T> p) =>
             // A hit object can only be split on control points which connect two different path segments.
-            p.ControlPoint.Type.HasValue && p != Pieces.FirstOrDefault() && p != Pieces.LastOrDefault();
+            p.ControlPoint.Type.HasValue && p.ControlPoint != controlPoints.FirstOrDefault() && p.ControlPoint != controlPoints.LastOrDefault();
 
         private void onControlPointsChanged(object sender, NotifyCollectionChangedEventArgs e)
         {

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

@@ -0,0 +1,29 @@
+// 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.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+using osu.Game.Rulesets.Osu.Edit.Blueprints;
+
+namespace osu.Game.Rulesets.Osu.Edit
+{
+    public partial class GridFromPointsTool : CompositionTool
+    {
+        public GridFromPointsTool()
+            : base("Grid")
+        {
+            TooltipText = """
+                          Left click to set the origin.
+                          Left click again to set the spacing and rotation.
+                          Right click to reset to default.
+                          Click and drag to set the origin, spacing and rotation.
+                          """;
+        }
+
+        public override Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.Solid.DraftingCompass };
+
+        public override PlacementBlueprint CreatePlacementBlueprint() => new GridPlacementBlueprint();
+    }
+}

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -14,7 +15,6 @@ using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Edit;
-using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.RadioButtons;
@@ -38,7 +38,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             MinValue = 0f,
             MaxValue = OsuPlayfield.BASE_SIZE.X,
-            Precision = 1f
         };
 
         /// <summary>
@@ -48,7 +47,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             MinValue = 0f,
             MaxValue = OsuPlayfield.BASE_SIZE.Y,
-            Precision = 1f
         };
 
         /// <summary>
@@ -58,7 +56,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             MinValue = 4f,
             MaxValue = 128f,
-            Precision = 1f
         };
 
         /// <summary>
@@ -68,14 +65,13 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             MinValue = -180f,
             MaxValue = 180f,
-            Precision = 1f
         };
 
         /// <summary>
         /// Read-only bindable representing the grid's origin.
         /// Equivalent to <code>new Vector2(StartPositionX, StartPositionY)</code>
         /// </summary>
-        public Bindable<Vector2> StartPosition { get; } = new Bindable<Vector2>();
+        public Bindable<Vector2> StartPosition { get; } = new Bindable<Vector2>(OsuPlayfield.BASE_SIZE / 2);
 
         /// <summary>
         /// Read-only bindable representing the grid's spacing in both the X and Y dimension.
@@ -91,8 +87,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         private ExpandableSlider<float> gridLinesRotationSlider = null!;
         private EditorRadioButtonCollection gridTypeButtons = null!;
 
-        private ExpandableButton useSelectedObjectPositionButton = null!;
-
         public OsuGridToolboxGroup()
             : base("grid")
         {
@@ -100,6 +94,26 @@ namespace osu.Game.Rulesets.Osu.Edit
 
         private const float max_automatic_spacing = 64;
 
+        public void SetGridFromPoints(Vector2 point1, Vector2 point2)
+        {
+            StartPositionX.Value = point1.X;
+            StartPositionY.Value = point1.Y;
+
+            // Get the angle between the two points and normalize to the valid range.
+            if (!GridLinesRotation.Disabled)
+            {
+                float period = GridLinesRotation.MaxValue - GridLinesRotation.MinValue;
+                GridLinesRotation.Value = normalizeRotation(MathHelper.RadiansToDegrees(MathF.Atan2(point2.Y - point1.Y, point2.X - point1.X)), period);
+            }
+
+            // Divide the distance so that there is a good density of grid lines.
+            // This matches the maximum grid size of the grid size cycling hotkey.
+            float dist = Vector2.Distance(point1, point2);
+            while (dist >= max_automatic_spacing)
+                dist /= 2;
+            Spacing.Value = dist;
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {
@@ -115,19 +129,6 @@ namespace osu.Game.Rulesets.Osu.Edit
                     Current = StartPositionY,
                     KeyboardStep = 1,
                 },
-                useSelectedObjectPositionButton = new ExpandableButton
-                {
-                    ExpandedLabelText = "Centre on selected object",
-                    Action = () =>
-                    {
-                        if (editorBeatmap.SelectedHitObjects.Count != 1)
-                            return;
-
-                        StartPosition.Value = ((IHasPosition)editorBeatmap.SelectedHitObjects.Single()).Position;
-                        updateEnabledStates();
-                    },
-                    RelativeSizeAxes = Axes.X,
-                },
                 spacingSlider = new ExpandableSlider<float>
                 {
                     Current = Spacing,
@@ -176,22 +177,28 @@ namespace osu.Game.Rulesets.Osu.Edit
 
             StartPositionX.BindValueChanged(x =>
             {
-                startPositionXSlider.ContractedLabelText = $"X: {x.NewValue:N0}";
-                startPositionXSlider.ExpandedLabelText = $"X Offset: {x.NewValue:N0}";
+                startPositionXSlider.ContractedLabelText = $"X: {x.NewValue:#,0.##}";
+                startPositionXSlider.ExpandedLabelText = $"X Offset: {x.NewValue:#,0.##}";
                 StartPosition.Value = new Vector2(x.NewValue, StartPosition.Value.Y);
             }, true);
 
             StartPositionY.BindValueChanged(y =>
             {
-                startPositionYSlider.ContractedLabelText = $"Y: {y.NewValue:N0}";
-                startPositionYSlider.ExpandedLabelText = $"Y Offset: {y.NewValue:N0}";
+                startPositionYSlider.ContractedLabelText = $"Y: {y.NewValue:#,0.##}";
+                startPositionYSlider.ExpandedLabelText = $"Y Offset: {y.NewValue:#,0.##}";
                 StartPosition.Value = new Vector2(StartPosition.Value.X, y.NewValue);
             }, true);
 
+            StartPosition.BindValueChanged(pos =>
+            {
+                StartPositionX.Value = pos.NewValue.X;
+                StartPositionY.Value = pos.NewValue.Y;
+            });
+
             Spacing.BindValueChanged(spacing =>
             {
-                spacingSlider.ContractedLabelText = $"S: {spacing.NewValue:N0}";
-                spacingSlider.ExpandedLabelText = $"Spacing: {spacing.NewValue:N0}";
+                spacingSlider.ContractedLabelText = $"S: {spacing.NewValue:#,0.##}";
+                spacingSlider.ExpandedLabelText = $"Spacing: {spacing.NewValue:#,0.##}";
                 SpacingVector.Value = new Vector2(spacing.NewValue);
                 editorBeatmap.BeatmapInfo.GridSize = (int)spacing.NewValue;
             }, true);
@@ -209,34 +216,29 @@ namespace osu.Game.Rulesets.Osu.Edit
                 switch (v.NewValue)
                 {
                     case PositionSnapGridType.Square:
-                        GridLinesRotation.Value = ((GridLinesRotation.Value + 405) % 90) - 45;
+                        GridLinesRotation.Value = normalizeRotation(GridLinesRotation.Value, 90);
                         GridLinesRotation.MinValue = -45;
                         GridLinesRotation.MaxValue = 45;
                         break;
 
                     case PositionSnapGridType.Triangle:
-                        GridLinesRotation.Value = ((GridLinesRotation.Value + 390) % 60) - 30;
+                        GridLinesRotation.Value = normalizeRotation(GridLinesRotation.Value, 60);
                         GridLinesRotation.MinValue = -30;
                         GridLinesRotation.MaxValue = 30;
                         break;
                 }
             }, true);
 
-            editorBeatmap.BeatmapReprocessed += updateEnabledStates;
-            editorBeatmap.SelectedHitObjects.BindCollectionChanged((_, _) => updateEnabledStates());
             expandingContainer?.Expanded.BindValueChanged(v =>
             {
                 gridTypeButtons.FadeTo(v.NewValue ? 1f : 0f, 500, Easing.OutQuint);
                 gridTypeButtons.BypassAutoSizeAxes = !v.NewValue ? Axes.Y : Axes.None;
-                updateEnabledStates();
             }, true);
         }
 
-        private void updateEnabledStates()
+        private float normalizeRotation(float rotation, float period)
         {
-            useSelectedObjectPositionButton.Enabled.Value = expandingContainer?.Expanded.Value == true
-                                                            && editorBeatmap.SelectedHitObjects.Count == 1
-                                                            && StartPosition.Value != ((IHasPosition)editorBeatmap.SelectedHitObjects.Single()).Position;
+            return ((rotation + 360 + period * 0.5f) % period) - period * 0.5f;
         }
 
         private void nextGridSize()

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

@@ -45,7 +45,8 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             new HitCircleCompositionTool(),
             new SliderCompositionTool(),
-            new SpinnerCompositionTool()
+            new SpinnerCompositionTool(),
+            new GridFromPointsTool()
         };
 
         private readonly Bindable<TernaryState> rectangularGridSnapToggle = new Bindable<TernaryState>();
@@ -79,13 +80,12 @@ namespace osu.Game.Rulesets.Osu.Edit
             // Give a bit of breathing room around the playfield content.
             PlayfieldContentContainer.Padding = new MarginPadding(10);
 
-            LayerBelowRuleset.AddRange(new Drawable[]
-            {
+            LayerBelowRuleset.Add(
                 distanceSnapGridContainer = new Container
                 {
                     RelativeSizeAxes = Axes.Both
                 }
-            });
+            );
 
             selectedHitObjects = EditorBeatmap.SelectedHitObjects.GetBoundCopy();
             selectedHitObjects.CollectionChanged += (_, _) => updateDistanceSnapGrid();

osu.Game.Rulesets.Osu/Edit/Setup/OsuDifficultySection.cs

@@ -16,13 +16,13 @@ namespace osu.Game.Rulesets.Osu.Edit.Setup
 {
     public partial class OsuDifficultySection : SetupSection
     {
-        private LabelledSliderBar<float> circleSizeSlider { get; set; } = null!;
-        private LabelledSliderBar<float> healthDrainSlider { get; set; } = null!;
-        private LabelledSliderBar<float> approachRateSlider { get; set; } = null!;
-        private LabelledSliderBar<float> overallDifficultySlider { get; set; } = null!;
-        private LabelledSliderBar<double> baseVelocitySlider { get; set; } = null!;
-        private LabelledSliderBar<double> tickRateSlider { get; set; } = null!;
-        private LabelledSliderBar<float> stackLeniency { get; set; } = null!;
+        private FormSliderBar<float> circleSizeSlider { get; set; } = null!;
+        private FormSliderBar<float> healthDrainSlider { get; set; } = null!;
+        private FormSliderBar<float> approachRateSlider { get; set; } = null!;
+        private FormSliderBar<float> overallDifficultySlider { get; set; } = null!;
+        private FormSliderBar<double> baseVelocitySlider { get; set; } = null!;
+        private FormSliderBar<double> tickRateSlider { get; set; } = null!;
+        private FormSliderBar<float> stackLeniency { get; set; } = null!;
 
         public override LocalisableString Title => EditorSetupStrings.DifficultyHeader;
 
@@ -31,103 +31,110 @@ namespace osu.Game.Rulesets.Osu.Edit.Setup
         {
             Children = new Drawable[]
             {
-                circleSizeSlider = new LabelledSliderBar<float>
+                circleSizeSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsCs,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.CircleSizeDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsCs,
+                    HintText = EditorSetupStrings.CircleSizeDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.CircleSize)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                healthDrainSlider = new LabelledSliderBar<float>
+                healthDrainSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsDrain,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.DrainRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsDrain,
+                    HintText = EditorSetupStrings.DrainRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.DrainRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                approachRateSlider = new LabelledSliderBar<float>
+                approachRateSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAr,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.ApproachRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAr,
+                    HintText = EditorSetupStrings.ApproachRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.ApproachRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                overallDifficultySlider = new LabelledSliderBar<float>
+                overallDifficultySlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAccuracy,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.OverallDifficultyDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAccuracy,
+                    HintText = EditorSetupStrings.OverallDifficultyDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.OverallDifficulty)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                baseVelocitySlider = new LabelledSliderBar<double>
+                baseVelocitySlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.BaseVelocity,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.BaseVelocityDescription,
+                    Caption = EditorSetupStrings.BaseVelocity,
+                    HintText = EditorSetupStrings.BaseVelocityDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderMultiplier)
                     {
                         Default = 1.4,
                         MinValue = 0.4,
                         MaxValue = 3.6,
                         Precision = 0.01f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                tickRateSlider = new LabelledSliderBar<double>
+                tickRateSlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.TickRate,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.TickRateDescription,
+                    Caption = EditorSetupStrings.TickRate,
+                    HintText = EditorSetupStrings.TickRateDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderTickRate)
                     {
                         Default = 1,
                         MinValue = 1,
                         MaxValue = 4,
                         Precision = 1,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                stackLeniency = new LabelledSliderBar<float>
+                stackLeniency = new FormSliderBar<float>
                 {
-                    Label = "Stack Leniency",
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = "In play mode, osu! automatically stacks notes which occur at the same location. Increasing this value means it is more likely to snap notes of further time-distance.",
+                    Caption = "Stack Leniency",
+                    HintText = "In play mode, osu! automatically stacks notes which occur at the same location. Increasing this value means it is more likely to snap notes of further time-distance.",
                     Current = new BindableFloat(Beatmap.BeatmapInfo.StackLeniency)
                     {
                         Default = 0.7f,
                         MinValue = 0,
                         MaxValue = 1,
                         Precision = 0.1f
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
             };
 
-            foreach (var item in Children.OfType<LabelledSliderBar<float>>())
+            foreach (var item in Children.OfType<FormSliderBar<float>>())
                 item.Current.ValueChanged += _ => updateValues();
 
-            foreach (var item in Children.OfType<LabelledSliderBar<double>>())
+            foreach (var item in Children.OfType<FormSliderBar<double>>())
                 item.Current.ValueChanged += _ => updateValues();
         }
 

osu.Game.Rulesets.Osu/Objects/Slider.cs

@@ -204,6 +204,7 @@ namespace osu.Game.Rulesets.Osu.Objects
                             SpanStartTime = e.SpanStartTime,
                             StartTime = e.Time,
                             Position = Position + Path.PositionAt(e.PathProgress),
+                            PathProgress = e.PathProgress,
                             StackHeight = StackHeight,
                         });
                         break;
@@ -236,6 +237,7 @@ namespace osu.Game.Rulesets.Osu.Objects
                             StartTime = StartTime + (e.SpanIndex + 1) * SpanDuration,
                             Position = Position + Path.PositionAt(e.PathProgress),
                             StackHeight = StackHeight,
+                            PathProgress = e.PathProgress,
                         });
                         break;
                 }
@@ -248,14 +250,27 @@ namespace osu.Game.Rulesets.Osu.Objects
         {
             endPositionCache.Invalidate();
 
-            if (HeadCircle != null)
-                HeadCircle.Position = Position;
+            foreach (var nested in NestedHitObjects)
+            {
+                switch (nested)
+                {
+                    case SliderHeadCircle headCircle:
+                        headCircle.Position = Position;
+                        break;
 
-            if (TailCircle != null)
-                TailCircle.Position = EndPosition;
+                    case SliderTailCircle tailCircle:
+                        tailCircle.Position = EndPosition;
+                        break;
 
-            if (LastRepeat != null)
-                LastRepeat.Position = RepeatCount % 2 == 0 ? Position : Position + Path.PositionAt(1);
+                    case SliderRepeat repeat:
+                        repeat.Position = Position + Path.PositionAt(repeat.PathProgress);
+                        break;
+
+                    case SliderTick tick:
+                        tick.Position = Position + Path.PositionAt(tick.PathProgress);
+                        break;
+                }
+            }
         }
 
         protected void UpdateNestedSamples()

osu.Game.Rulesets.Osu/Objects/SliderRepeat.cs

@@ -5,6 +5,8 @@ namespace osu.Game.Rulesets.Osu.Objects
 {
     public class SliderRepeat : SliderEndCircle
     {
+        public double PathProgress { get; set; }
+
         public SliderRepeat(Slider slider)
             : base(slider)
         {

osu.Game.Rulesets.Osu/Objects/SliderTick.cs

@@ -13,6 +13,7 @@ namespace osu.Game.Rulesets.Osu.Objects
     {
         public int SpanIndex { get; set; }
         public double SpanStartTime { get; set; }
+        public double PathProgress { get; set; }
 
         protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, IBeatmapDifficultyInfo difficulty)
         {

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Localisation;
@@ -39,6 +40,7 @@ using osu.Game.Scoring;
 using osu.Game.Screens.Edit.Setup;
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Osu
 {
@@ -336,10 +338,28 @@ namespace osu.Game.Rulesets.Osu
             };
         }
 
-        public override IEnumerable<SetupSection> CreateEditorSetupSections() =>
+        public override IEnumerable<Drawable> CreateEditorSetupSections() =>
         [
+            new MetadataSection(),
             new OsuDifficultySection(),
-            new ColoursSection(),
+            new FillFlowContainer
+            {
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(SetupScreen.SPACING),
+                Children = new Drawable[]
+                {
+                    new ResourcesSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    },
+                    new ColoursSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    }
+                }
+            },
+            new DesignSection(),
         ];
 
         /// <seealso cref="OsuHitObject.ApplyDefaultsToSelf"/>

osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils_Reposition.cs

@@ -232,8 +232,6 @@ namespace osu.Game.Rulesets.Osu.Utils
             slider.Position = workingObject.PositionModified = new Vector2(newX, newY);
             workingObject.EndPositionModified = slider.EndPosition;
 
-            shiftNestedObjects(slider, workingObject.PositionModified - workingObject.PositionOriginal);
-
             return workingObject.PositionModified - previousPosition;
         }
 
@@ -307,22 +305,6 @@ namespace osu.Game.Rulesets.Osu.Utils
             return new RectangleF(left, top, right - left, bottom - top);
         }
 
-        /// <summary>
-        /// Shifts all nested <see cref="SliderTick"/>s and <see cref="SliderRepeat"/>s by the specified shift.
-        /// </summary>
-        /// <param name="slider"><see cref="Slider"/> whose nested <see cref="SliderTick"/>s and <see cref="SliderRepeat"/>s should be shifted</param>
-        /// <param name="shift">The <see cref="Vector2"/> the <see cref="Slider"/>'s nested <see cref="SliderTick"/>s and <see cref="SliderRepeat"/>s should be shifted by</param>
-        private static void shiftNestedObjects(Slider slider, Vector2 shift)
-        {
-            foreach (var hitObject in slider.NestedHitObjects.Where(o => o is SliderTick || o is SliderRepeat))
-            {
-                if (!(hitObject is OsuHitObject osuHitObject))
-                    continue;
-
-                osuHitObject.Position += shift;
-            }
-        }
-
         /// <summary>
         /// Clamp a position to playfield, keeping a specified distance from the edges.
         /// </summary>
@@ -431,7 +413,6 @@ namespace osu.Game.Rulesets.Osu.Utils
         private class WorkingObject
         {
             public float RotationOriginal { get; }
-            public Vector2 PositionOriginal { get; }
             public Vector2 PositionModified { get; set; }
             public Vector2 EndPositionModified { get; set; }
 
@@ -442,7 +423,7 @@ namespace osu.Game.Rulesets.Osu.Utils
             {
                 PositionInfo = positionInfo;
                 RotationOriginal = HitObject is Slider slider ? getSliderRotation(slider) : 0;
-                PositionModified = PositionOriginal = HitObject.Position;
+                PositionModified = HitObject.Position;
                 EndPositionModified = HitObject.EndPosition;
             }
         }

osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs

@@ -43,6 +43,15 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         [JsonProperty("great_hit_window")]
         public double GreatHitWindow { get; set; }
 
+        /// <summary>
+        /// The perceived hit window for an OK hit inclusive of rate-adjusting mods (DT/HT/etc).
+        /// </summary>
+        /// <remarks>
+        /// Rate-adjusting mods don't directly affect the hit window, but have a perceived effect as a result of adjusting audio timing.
+        /// </remarks>
+        [JsonProperty("ok_hit_window")]
+        public double OkHitWindow { get; set; }
+
         public override IEnumerable<(int attributeId, object value)> ToDatabaseAttributes()
         {
             foreach (var v in base.ToDatabaseAttributes())
@@ -50,6 +59,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
 
             yield return (ATTRIB_ID_DIFFICULTY, StarRating);
             yield return (ATTRIB_ID_GREAT_HIT_WINDOW, GreatHitWindow);
+            yield return (ATTRIB_ID_OK_HIT_WINDOW, OkHitWindow);
         }
 
         public override void FromDatabaseAttributes(IReadOnlyDictionary<int, double> values, IBeatmapOnlineInfo onlineInfo)
@@ -58,6 +68,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
 
             StarRating = values[ATTRIB_ID_DIFFICULTY];
             GreatHitWindow = values[ATTRIB_ID_GREAT_HIT_WINDOW];
+            OkHitWindow = values[ATTRIB_ID_OK_HIT_WINDOW];
         }
     }
 }

osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         private const double colour_skill_multiplier = 0.375 * difficulty_multiplier;
         private const double stamina_skill_multiplier = 0.375 * difficulty_multiplier;
 
-        public override int Version => 20221107;
+        public override int Version => 20241007;
 
         public TaikoDifficultyCalculator(IRulesetInfo ruleset, IWorkingBeatmap beatmap)
             : base(ruleset, beatmap)
@@ -99,6 +99,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
                 ColourDifficulty = colourRating,
                 PeakDifficulty = combinedRating,
                 GreatHitWindow = hitWindows.WindowFor(HitResult.Great) / clockRate,
+                OkHitWindow = hitWindows.WindowFor(HitResult.Ok) / clockRate,
                 MaxCombo = beatmap.GetMaxCombo(),
             };
 

osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceAttributes.cs

@@ -18,6 +18,9 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         [JsonProperty("effective_miss_count")]
         public double EffectiveMissCount { get; set; }
 
+        [JsonProperty("estimated_unstable_rate")]
+        public double? EstimatedUnstableRate { get; set; }
+
         public override IEnumerable<PerformanceDisplayAttribute> GetAttributesForDisplay()
         {
             foreach (var attribute in base.GetAttributesForDisplay())

osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs

@@ -9,6 +9,7 @@ using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Scoring;
+using osu.Game.Utils;
 
 namespace osu.Game.Rulesets.Taiko.Difficulty
 {
@@ -18,7 +19,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         private int countOk;
         private int countMeh;
         private int countMiss;
-        private double accuracy;
+        private double? estimatedUnstableRate;
 
         private double effectiveMissCount;
 
@@ -35,7 +36,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             countOk = score.Statistics.GetValueOrDefault(HitResult.Ok);
             countMeh = score.Statistics.GetValueOrDefault(HitResult.Meh);
             countMiss = score.Statistics.GetValueOrDefault(HitResult.Miss);
-            accuracy = customAccuracy;
+            estimatedUnstableRate = computeDeviationUpperBound(taikoAttributes) * 10;
 
             // The effectiveMissCount is calculated by gaining a ratio for totalSuccessfulHits and increasing the miss penalty for shorter object counts lower than 1000.
             if (totalSuccessfulHits > 0)
@@ -65,6 +66,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
                 Difficulty = difficultyValue,
                 Accuracy = accuracyValue,
                 EffectiveMissCount = effectiveMissCount,
+                EstimatedUnstableRate = estimatedUnstableRate,
                 Total = totalValue
             };
         }
@@ -85,35 +87,94 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
                 difficultyValue *= 1.025;
 
             if (score.Mods.Any(m => m is ModHardRock))
-                difficultyValue *= 1.050;
+                difficultyValue *= 1.10;
 
             if (score.Mods.Any(m => m is ModFlashlight<TaikoHitObject>))
                 difficultyValue *= 1.050 * lengthBonus;
 
-            return difficultyValue * Math.Pow(accuracy, 2.0);
+            if (estimatedUnstableRate == null)
+                return 0;
+
+            return difficultyValue * Math.Pow(SpecialFunctions.Erf(400 / (Math.Sqrt(2) * estimatedUnstableRate.Value)), 2.0);
         }
 
         private double computeAccuracyValue(ScoreInfo score, TaikoDifficultyAttributes attributes, bool isConvert)
         {
-            if (attributes.GreatHitWindow <= 0)
+            if (attributes.GreatHitWindow <= 0 || estimatedUnstableRate == null)
                 return 0;
 
-            double accuracyValue = Math.Pow(60.0 / attributes.GreatHitWindow, 1.1) * Math.Pow(accuracy, 8.0) * Math.Pow(attributes.StarRating, 0.4) * 27.0;
+            double accuracyValue = Math.Pow(70 / estimatedUnstableRate.Value, 1.1) * Math.Pow(attributes.StarRating, 0.4) * 100.0;
 
             double lengthBonus = Math.Min(1.15, Math.Pow(totalHits / 1500.0, 0.3));
-            accuracyValue *= lengthBonus;
 
             // Slight HDFL Bonus for accuracy. A clamp is used to prevent against negative values.
             if (score.Mods.Any(m => m is ModFlashlight<TaikoHitObject>) && score.Mods.Any(m => m is ModHidden) && !isConvert)
-                accuracyValue *= Math.Max(1.0, 1.1 * lengthBonus);
+                accuracyValue *= Math.Max(1.0, 1.05 * lengthBonus);
 
             return accuracyValue;
         }
 
+        /// <summary>
+        /// Computes an upper bound on the player's tap deviation based on the OD, number of circles and sliders,
+        /// and the hit judgements, assuming the player's mean hit error is 0. The estimation is consistent in that
+        /// two SS scores on the same map with the same settings will always return the same deviation.
+        /// </summary>
+        private double? computeDeviationUpperBound(TaikoDifficultyAttributes attributes)
+        {
+            if (totalSuccessfulHits == 0 || attributes.GreatHitWindow <= 0)
+                return null;
+
+            double h300 = attributes.GreatHitWindow;
+            double h100 = attributes.OkHitWindow;
+
+            const double z = 2.32634787404; // 99% critical value for the normal distribution (one-tailed).
+
+            // The upper bound on deviation, calculated with the ratio of 300s to objects, and the great hit window.
+            double? calcDeviationGreatWindow()
+            {
+                if (countGreat == 0) return null;
+
+                double n = totalHits;
+
+                // Proportion of greats hit.
+                double p = countGreat / n;
+
+                // We can be 99% confident that p is at least this value.
+                double pLowerBound = (n * p + z * z / 2) / (n + z * z) - z / (n + z * z) * Math.Sqrt(n * p * (1 - p) + z * z / 4);
+
+                // We can be 99% confident that the deviation is not higher than:
+                return h300 / (Math.Sqrt(2) * SpecialFunctions.ErfInv(pLowerBound));
+            }
+
+            // The upper bound on deviation, calculated with the ratio of 300s + 100s to objects, and the good hit window.
+            // This will return a lower value than the first method when the number of 100s is high, but the miss count is low.
+            double? calcDeviationGoodWindow()
+            {
+                if (totalSuccessfulHits == 0) return null;
+
+                double n = totalHits;
+
+                // Proportion of greats + goods hit.
+                double p = totalSuccessfulHits / n;
+
+                // We can be 99% confident that p is at least this value.
+                double pLowerBound = (n * p + z * z / 2) / (n + z * z) - z / (n + z * z) * Math.Sqrt(n * p * (1 - p) + z * z / 4);
+
+                // We can be 99% confident that the deviation is not higher than:
+                return h100 / (Math.Sqrt(2) * SpecialFunctions.ErfInv(pLowerBound));
+            }
+
+            double? deviationGreatWindow = calcDeviationGreatWindow();
+            double? deviationGoodWindow = calcDeviationGoodWindow();
+
+            if (deviationGreatWindow is null)
+                return deviationGoodWindow;
+
+            return Math.Min(deviationGreatWindow.Value, deviationGoodWindow!.Value);
+        }
+
         private int totalHits => countGreat + countOk + countMeh + countMiss;
 
         private int totalSuccessfulHits => countGreat + countOk + countMeh;
-
-        private double customAccuracy => totalHits > 0 ? (countGreat * 300 + countOk * 150) / (totalHits * 300.0) : 0;
     }
 }

osu.Game.Rulesets.Taiko/Edit/Setup/TaikoDifficultySection.cs

@@ -16,10 +16,10 @@ namespace osu.Game.Rulesets.Taiko.Edit.Setup
 {
     public partial class TaikoDifficultySection : SetupSection
     {
-        private LabelledSliderBar<float> healthDrainSlider { get; set; } = null!;
-        private LabelledSliderBar<float> overallDifficultySlider { get; set; } = null!;
-        private LabelledSliderBar<double> baseVelocitySlider { get; set; } = null!;
-        private LabelledSliderBar<double> tickRateSlider { get; set; } = null!;
+        private FormSliderBar<float> healthDrainSlider { get; set; } = null!;
+        private FormSliderBar<float> overallDifficultySlider { get; set; } = null!;
+        private FormSliderBar<double> baseVelocitySlider { get; set; } = null!;
+        private FormSliderBar<double> tickRateSlider { get; set; } = null!;
 
         public override LocalisableString Title => EditorSetupStrings.DifficultyHeader;
 
@@ -28,64 +28,68 @@ namespace osu.Game.Rulesets.Taiko.Edit.Setup
         {
             Children = new Drawable[]
             {
-                healthDrainSlider = new LabelledSliderBar<float>
+                healthDrainSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsDrain,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.DrainRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsDrain,
+                    HintText = EditorSetupStrings.DrainRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.DrainRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                overallDifficultySlider = new LabelledSliderBar<float>
+                overallDifficultySlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAccuracy,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.OverallDifficultyDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAccuracy,
+                    HintText = EditorSetupStrings.OverallDifficultyDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.OverallDifficulty)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                baseVelocitySlider = new LabelledSliderBar<double>
+                baseVelocitySlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.BaseVelocity,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.BaseVelocityDescription,
+                    Caption = EditorSetupStrings.BaseVelocity,
+                    HintText = EditorSetupStrings.BaseVelocityDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderMultiplier)
                     {
                         Default = 1.4,
                         MinValue = 0.4,
                         MaxValue = 3.6,
                         Precision = 0.01f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                tickRateSlider = new LabelledSliderBar<double>
+                tickRateSlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.TickRate,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.TickRateDescription,
+                    Caption = EditorSetupStrings.TickRate,
+                    HintText = EditorSetupStrings.TickRateDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderTickRate)
                     {
                         Default = 1,
                         MinValue = 1,
                         MaxValue = 4,
                         Precision = 1,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
             };
 
-            foreach (var item in Children.OfType<LabelledSliderBar<float>>())
+            foreach (var item in Children.OfType<FormSliderBar<float>>())
                 item.Current.ValueChanged += _ => updateValues();
 
-            foreach (var item in Children.OfType<LabelledSliderBar<double>>())
+            foreach (var item in Children.OfType<FormSliderBar<double>>())
                 item.Current.ValueChanged += _ => updateValues();
         }
 

osu.Game.Rulesets.Taiko/TaikoRuleset.cs

@@ -190,9 +190,12 @@ namespace osu.Game.Rulesets.Taiko
 
         public override HitObjectComposer CreateHitObjectComposer() => new TaikoHitObjectComposer(this);
 
-        public override IEnumerable<SetupSection> CreateEditorSetupSections() =>
+        public override IEnumerable<Drawable> CreateEditorSetupSections() =>
         [
+            new MetadataSection(),
             new TaikoDifficultySection(),
+            new ResourcesSection(),
+            new DesignSection(),
         ];
 
         public override IBeatmapVerifier CreateBeatmapVerifier() => new TaikoBeatmapVerifier();

osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs

@@ -22,9 +22,9 @@ namespace osu.Game.Tests.Database
     [HeadlessTest]
     public partial class BackgroundDataStoreProcessorTests : OsuTestScene, ILocalUserPlayInfo
     {
-        public IBindable<bool> IsPlaying => isPlaying;
+        public IBindable<LocalUserPlayingState> PlayingState => isPlaying;
 
-        private readonly Bindable<bool> isPlaying = new Bindable<bool>();
+        private readonly Bindable<LocalUserPlayingState> isPlaying = new Bindable<LocalUserPlayingState>();
 
         private BeatmapSetInfo importedSet = null!;
 
@@ -37,7 +37,7 @@ namespace osu.Game.Tests.Database
         [SetUpSteps]
         public void SetUpSteps()
         {
-            AddStep("Set not playing", () => isPlaying.Value = false);
+            AddStep("Set not playing", () => isPlaying.Value = LocalUserPlayingState.NotPlaying);
         }
 
         [Test]
@@ -89,7 +89,7 @@ namespace osu.Game.Tests.Database
                 });
             });
 
-            AddStep("Set playing", () => isPlaying.Value = true);
+            AddStep("Set playing", () => isPlaying.Value = LocalUserPlayingState.Playing);
 
             AddStep("Reset difficulty", () =>
             {
@@ -117,7 +117,7 @@ namespace osu.Game.Tests.Database
                 });
             });
 
-            AddStep("Set not playing", () => isPlaying.Value = false);
+            AddStep("Set not playing", () => isPlaying.Value = LocalUserPlayingState.NotPlaying);
 
             AddUntilStep("wait for difficulties repopulated", () =>
             {

osu.Game.Tests/Input/ConfineMouseTrackerTest.cs

@@ -3,11 +3,13 @@
 
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Configuration;
 using osu.Framework.Input;
 using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Input;
+using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
 
 namespace osu.Game.Tests.Input
@@ -15,9 +17,20 @@ namespace osu.Game.Tests.Input
     [HeadlessTest]
     public partial class ConfineMouseTrackerTest : OsuGameTestScene
     {
+        private readonly Bindable<LocalUserPlayingState> playingState = new Bindable<LocalUserPlayingState>();
+
         [Resolved]
         private FrameworkConfigManager frameworkConfigManager { get; set; } = null!;
 
+        [SetUpSteps]
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            // a bit dodgy.
+            AddStep("bind playing state", () => ((IBindable<LocalUserPlayingState>)playingState).BindTo(((ILocalUserPlayInfo)Game).PlayingState));
+        }
+
         [TestCase(WindowMode.Windowed)]
         [TestCase(WindowMode.Borderless)]
         public void TestDisableConfining(WindowMode windowMode)
@@ -88,7 +101,7 @@ namespace osu.Game.Tests.Input
             => AddStep($"set {mode} game-side", () => Game.LocalConfig.SetValue(OsuSetting.ConfineMouseMode, mode));
 
         private void setLocalUserPlayingTo(bool playing)
-            => AddStep($"local user {(playing ? "playing" : "not playing")}", () => Game.LocalUserPlaying.Value = playing);
+            => AddStep($"local user {(playing ? "playing" : "not playing")}", () => playingState.Value = playing ? LocalUserPlayingState.Playing : LocalUserPlayingState.NotPlaying);
 
         private void gameSideModeIs(OsuConfineMouseMode mode)
             => AddAssert($"mode is {mode} game-side", () => Game.LocalConfig.Get<OsuConfineMouseMode>(OsuSetting.ConfineMouseMode) == mode);

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

@@ -0,0 +1,123 @@
+// 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 NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Overlays;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.Edit;
+using osu.Game.Screens.Edit.Setup;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Tests.Visual.Editing
+{
+    [HeadlessTest]
+    public partial class TestSceneColoursSection : OsuManualInputManagerTestScene
+    {
+        [Test]
+        public void TestNoBeatmapSkinColours()
+        {
+            LegacyBeatmapSkin skin = null!;
+            ColoursSection coloursSection = null!;
+
+            AddStep("create beatmap skin", () => skin = new LegacyBeatmapSkin(new BeatmapInfo(), null));
+            AddStep("create colours section", () => Child = new DependencyProvidingContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                CachedDependencies =
+                [
+                    (typeof(EditorBeatmap), new EditorBeatmap(new Beatmap
+                    {
+                        BeatmapInfo = { Ruleset = new OsuRuleset().RulesetInfo }
+                    }, skin)),
+                    (typeof(OverlayColourProvider), new OverlayColourProvider(OverlayColourScheme.Aquamarine))
+                ],
+                Child = coloursSection = new ColoursSection
+                {
+                    RelativeSizeAxes = Axes.X,
+                }
+            });
+            AddAssert("beatmap skin has no colours", () => skin.Configuration.CustomComboColours, () => Is.Empty);
+            AddAssert("section displays default combo colours",
+                () => coloursSection.ChildrenOfType<FormColourPalette>().Single().Colours,
+                () => Is.EquivalentTo(new Colour4[]
+                {
+                    SkinConfiguration.DefaultComboColours[1],
+                    SkinConfiguration.DefaultComboColours[2],
+                    SkinConfiguration.DefaultComboColours[3],
+                    SkinConfiguration.DefaultComboColours[0],
+                }));
+
+            AddStep("add a colour", () => coloursSection.ChildrenOfType<FormColourPalette>().Single().Colours.Add(Colour4.Aqua));
+            AddAssert("beatmap skin has colours",
+                () => skin.Configuration.CustomComboColours,
+                () => Is.EquivalentTo(new[]
+                {
+                    SkinConfiguration.DefaultComboColours[1],
+                    SkinConfiguration.DefaultComboColours[2],
+                    SkinConfiguration.DefaultComboColours[3],
+                    Color4.Aqua,
+                    SkinConfiguration.DefaultComboColours[0],
+                }));
+        }
+
+        [Test]
+        public void TestExistingColours()
+        {
+            LegacyBeatmapSkin skin = null!;
+            ColoursSection coloursSection = null!;
+
+            AddStep("create beatmap skin", () =>
+            {
+                skin = new LegacyBeatmapSkin(new BeatmapInfo(), null);
+                skin.Configuration.CustomComboColours = new List<Color4>
+                {
+                    Color4.Azure,
+                    Color4.Beige,
+                    Color4.Chartreuse
+                };
+            });
+            AddStep("create colours section", () => Child = new DependencyProvidingContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                CachedDependencies =
+                [
+                    (typeof(EditorBeatmap), new EditorBeatmap(new Beatmap
+                    {
+                        BeatmapInfo = { Ruleset = new OsuRuleset().RulesetInfo }
+                    }, skin)),
+                    (typeof(OverlayColourProvider), new OverlayColourProvider(OverlayColourScheme.Aquamarine))
+                ],
+                Child = coloursSection = new ColoursSection
+                {
+                    RelativeSizeAxes = Axes.X,
+                }
+            });
+            AddAssert("section displays combo colours",
+                () => coloursSection.ChildrenOfType<FormColourPalette>().Single().Colours,
+                () => Is.EquivalentTo(new[]
+                {
+                    Colour4.Beige,
+                    Colour4.Chartreuse,
+                    Colour4.Azure,
+                }));
+
+            AddStep("add a colour", () => coloursSection.ChildrenOfType<FormColourPalette>().Single().Colours.Add(Colour4.Aqua));
+            AddAssert("beatmap skin has colours",
+                () => skin.Configuration.CustomComboColours,
+                () => Is.EquivalentTo(new[]
+                {
+                    Color4.Azure,
+                    Color4.Beige,
+                    Color4.Aqua,
+                    Color4.Chartreuse
+                }));
+        }
+    }
+}

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

@@ -8,6 +8,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
+using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets;
@@ -82,7 +83,7 @@ namespace osu.Game.Tests.Visual.Editing
         }
 
         [Test]
-        public void TestNudgeSelection()
+        public void TestNudgeSelectionTime()
         {
             HitCircle[] addedObjects = null!;
 
@@ -103,6 +104,51 @@ namespace osu.Game.Tests.Visual.Editing
             AddAssert("objects reverted to original position", () => addedObjects[0].StartTime == 100);
         }
 
+        [Test]
+        public void TestNudgeSelectionPosition()
+        {
+            HitCircle addedObject = null!;
+
+            AddStep("add hitobjects", () => EditorBeatmap.AddRange(new[]
+            {
+                addedObject = new HitCircle { StartTime = 200, Position = new Vector2(100) },
+            }));
+
+            AddStep("select object", () => EditorBeatmap.SelectedHitObjects.Add(addedObject));
+
+            AddStep("nudge up", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Key(Key.Up);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+            AddAssert("object position moved up", () => addedObject.Position.Y, () => Is.EqualTo(99).Within(Precision.FLOAT_EPSILON));
+
+            AddStep("nudge down", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Key(Key.Down);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+            AddAssert("object position moved down", () => addedObject.Position.Y, () => Is.EqualTo(100).Within(Precision.FLOAT_EPSILON));
+
+            AddStep("nudge left", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Key(Key.Left);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+            AddAssert("object position moved left", () => addedObject.Position.X, () => Is.EqualTo(99).Within(Precision.FLOAT_EPSILON));
+
+            AddStep("nudge right", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Key(Key.Right);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+            AddAssert("object position moved right", () => addedObject.Position.X, () => Is.EqualTo(100).Within(Precision.FLOAT_EPSILON));
+        }
+
         [Test]
         public void TestRotateHotkeys()
         {

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

@@ -7,12 +7,14 @@ using System;
 using System.Globalization;
 using System.Linq;
 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.UserInterfaceV2;
+using osu.Game.Overlays;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
@@ -25,6 +27,9 @@ namespace osu.Game.Tests.Visual.Editing
         private TestDesignSection designSection;
         private EditorBeatmap editorBeatmap { get; set; }
 
+        [Cached]
+        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Aquamarine);
+
         [SetUpSteps]
         public void SetUp()
         {
@@ -42,7 +47,7 @@ namespace osu.Game.Tests.Visual.Editing
                 {
                     (typeof(EditorBeatmap), editorBeatmap)
                 },
-                Child = designSection = new TestDesignSection()
+                Child = designSection = new TestDesignSection { RelativeSizeAxes = Axes.X }
             });
         }
 
@@ -99,11 +104,11 @@ namespace osu.Game.Tests.Visual.Editing
 
         private partial class TestDesignSection : DesignSection
         {
-            public new LabelledSwitchButton EnableCountdown => base.EnableCountdown;
+            public new FormCheckBox EnableCountdown => base.EnableCountdown;
 
             public new FillFlowContainer CountdownSettings => base.CountdownSettings;
-            public new LabelledEnumDropdown<CountdownType> CountdownSpeed => base.CountdownSpeed;
-            public new LabelledNumberBox CountdownOffset => base.CountdownOffset;
+            public new FormEnumDropdown<CountdownType> CountdownSpeed => base.CountdownSpeed;
+            public new FormTextBox CountdownOffset => base.CountdownOffset;
         }
     }
 }

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

@@ -1,11 +1,13 @@
 // 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.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Osu.Objects;
 using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Editing
@@ -135,9 +137,42 @@ namespace osu.Game.Tests.Visual.Editing
             pressAndCheckTime(Key.Up, 0);
         }
 
-        private void pressAndCheckTime(Key key, double expectedTime)
+        [Test]
+        public void TestSeekBetweenObjects()
         {
-            AddStep($"press {key}", () => InputManager.Key(key));
+            AddStep("add objects", () =>
+            {
+                EditorBeatmap.Clear();
+                EditorBeatmap.AddRange(new[]
+                {
+                    new HitCircle { StartTime = 1000, },
+                    new HitCircle { StartTime = 2250, },
+                    new HitCircle { StartTime = 3600, },
+                });
+            });
+            AddStep("seek to 0", () => EditorClock.Seek(0));
+
+            pressAndCheckTime(Key.Right, 1000, Key.ControlLeft);
+            pressAndCheckTime(Key.Right, 2250, Key.ControlLeft);
+            pressAndCheckTime(Key.Right, 3600, Key.ControlLeft);
+            pressAndCheckTime(Key.Right, 3600, Key.ControlLeft);
+            pressAndCheckTime(Key.Left, 2250, Key.ControlLeft);
+            pressAndCheckTime(Key.Left, 1000, Key.ControlLeft);
+            pressAndCheckTime(Key.Left, 1000, Key.ControlLeft);
+        }
+
+        private void pressAndCheckTime(Key key, double expectedTime, params Key[] modifiers)
+        {
+            AddStep($"press {key} with {(modifiers.Any() ? string.Join(',', modifiers) : "no modifiers")}", () =>
+            {
+                foreach (var modifier in modifiers)
+                    InputManager.PressKey(modifier);
+
+                InputManager.Key(key);
+
+                foreach (var modifier in modifiers)
+                    InputManager.ReleaseKey(modifier);
+            });
             AddUntilStep($"time is {expectedTime}", () => EditorClock.CurrentTime, () => Is.EqualTo(expectedTime).Within(1));
         }
     }

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

@@ -6,11 +6,13 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Overlays;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
@@ -20,6 +22,9 @@ namespace osu.Game.Tests.Visual.Editing
 {
     public partial class TestSceneMetadataSection : OsuManualInputManagerTestScene
     {
+        [Cached]
+        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Aquamarine);
+
         [Cached]
         private EditorBeatmap editorBeatmap = new EditorBeatmap(new Beatmap
         {
@@ -201,7 +206,7 @@ namespace osu.Game.Tests.Visual.Editing
         }
 
         private void createSection()
-            => AddStep("create metadata section", () => Child = metadataSection = new TestMetadataSection());
+            => AddStep("create metadata section", () => Child = metadataSection = new TestMetadataSection { RelativeSizeAxes = Axes.X });
 
         private void assertArtistMetadata(string expected)
             => AddAssert($"artist metadata is {expected}", () => editorBeatmap.Metadata.Artist, () => Is.EqualTo(expected));
@@ -226,11 +231,11 @@ namespace osu.Game.Tests.Visual.Editing
 
         private partial class TestMetadataSection : MetadataSection
         {
-            public new LabelledTextBox ArtistTextBox => base.ArtistTextBox;
-            public new LabelledTextBox RomanisedArtistTextBox => base.RomanisedArtistTextBox;
+            public new FormTextBox ArtistTextBox => base.ArtistTextBox;
+            public new FormTextBox RomanisedArtistTextBox => base.RomanisedArtistTextBox;
 
-            public new LabelledTextBox TitleTextBox => base.TitleTextBox;
-            public new LabelledTextBox RomanisedTitleTextBox => base.RomanisedTitleTextBox;
+            public new FormTextBox TitleTextBox => base.TitleTextBox;
+            public new FormTextBox RomanisedTitleTextBox => base.RomanisedTitleTextBox;
         }
     }
 }

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

@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using NUnit.Framework;
 using osu.Game.Overlays;
@@ -12,7 +10,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 {
     public partial class TestSceneOverlayActivation : OsuPlayerTestScene
     {
-        protected new OverlayTestPlayer Player => base.Player as OverlayTestPlayer;
+        protected new OverlayTestPlayer Player => (OverlayTestPlayer)base.Player;
 
         public override void SetUpSteps()
         {

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

@@ -25,14 +25,14 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Cached(typeof(ILocalUserPlayInfo))]
         private ILocalUserPlayInfo localUserInfo;
 
-        private readonly Bindable<bool> localUserPlaying = new Bindable<bool>();
+        private readonly Bindable<LocalUserPlayingState> playingState = new Bindable<LocalUserPlayingState>();
 
         private TextBox textBox => chatDisplay.ChildrenOfType<TextBox>().First();
 
         public TestSceneGameplayChatDisplay()
         {
             var mockLocalUserInfo = new Mock<ILocalUserPlayInfo>();
-            mockLocalUserInfo.SetupGet(i => i.IsPlaying).Returns(localUserPlaying);
+            mockLocalUserInfo.SetupGet(i => i.PlayingState).Returns(playingState);
 
             localUserInfo = mockLocalUserInfo.Object;
         }
@@ -124,6 +124,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddAssert($"chat {(isFocused ? "focused" : "not focused")}", () => textBox.HasFocus == isFocused);
 
         private void setLocalUserPlaying(bool playing) =>
-            AddStep($"local user {(playing ? "playing" : "not playing")}", () => localUserPlaying.Value = playing);
+            AddStep($"local user {(playing ? "playing" : "not playing")}", () => playingState.Value = playing ? LocalUserPlayingState.Playing : LocalUserPlayingState.NotPlaying);
     }
 }

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

@@ -84,7 +84,7 @@ namespace osu.Game.Tests.Visual.SongSelect
             AddStep("select EZ mod", () =>
             {
                 var ruleset = advancedStats.BeatmapInfo.Ruleset.CreateInstance().AsNonNull();
-                SelectedMods.Value = new[] { ruleset.CreateMod<ModEasy>() };
+                advancedStats.Mods.Value = new[] { ruleset.CreateMod<ModEasy>() };
             });
 
             AddAssert("circle size bar is blue", () => barIsBlue(advancedStats.FirstValue));
@@ -101,7 +101,7 @@ namespace osu.Game.Tests.Visual.SongSelect
             AddStep("select HR mod", () =>
             {
                 var ruleset = advancedStats.BeatmapInfo.Ruleset.CreateInstance().AsNonNull();
-                SelectedMods.Value = new[] { ruleset.CreateMod<ModHardRock>() };
+                advancedStats.Mods.Value = new[] { ruleset.CreateMod<ModHardRock>() };
             });
 
             AddAssert("circle size bar is red", () => barIsRed(advancedStats.FirstValue));
@@ -120,7 +120,7 @@ namespace osu.Game.Tests.Visual.SongSelect
                 var ruleset = advancedStats.BeatmapInfo.Ruleset.CreateInstance().AsNonNull();
                 var difficultyAdjustMod = ruleset.CreateMod<ModDifficultyAdjust>().AsNonNull();
                 difficultyAdjustMod.ReadFromDifficulty(advancedStats.BeatmapInfo.Difficulty);
-                SelectedMods.Value = new[] { difficultyAdjustMod };
+                advancedStats.Mods.Value = new[] { difficultyAdjustMod };
             });
 
             AddAssert("circle size bar is white", () => barIsWhite(advancedStats.FirstValue));
@@ -143,7 +143,7 @@ namespace osu.Game.Tests.Visual.SongSelect
                 difficultyAdjustMod.ReadFromDifficulty(originalDifficulty);
                 difficultyAdjustMod.DrainRate.Value = originalDifficulty.DrainRate - 0.5f;
                 difficultyAdjustMod.ApproachRate.Value = originalDifficulty.ApproachRate + 2.2f;
-                SelectedMods.Value = new[] { difficultyAdjustMod };
+                advancedStats.Mods.Value = new[] { difficultyAdjustMod };
             });
 
             AddAssert("circle size bar is white", () => barIsWhite(advancedStats.FirstValue));

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

@@ -72,7 +72,7 @@ namespace osu.Game.Tests.Visual.UserInterface
                         },
                         new FormSliderBar<float>
                         {
-                            Caption = "Instantaneous slider",
+                            Caption = "Slider",
                             Current = new BindableFloat
                             {
                                 MinValue = 0,
@@ -82,19 +82,6 @@ namespace osu.Game.Tests.Visual.UserInterface
                             },
                             TabbableContentContainer = this,
                         },
-                        new FormSliderBar<float>
-                        {
-                            Caption = "Non-instantaneous slider",
-                            Current = new BindableFloat
-                            {
-                                MinValue = 0,
-                                MaxValue = 10,
-                                Value = 5,
-                                Precision = 0.1f,
-                            },
-                            Instantaneous = false,
-                            TabbableContentContainer = this,
-                        },
                         new FormEnumDropdown<CountdownType>
                         {
                             Caption = EditorSetupStrings.EnableCountdown,
@@ -105,6 +92,17 @@ namespace osu.Game.Tests.Visual.UserInterface
                             Caption = "Audio file",
                             PlaceholderText = "Select an audio file",
                         },
+                        new FormColourPalette
+                        {
+                            Caption = "Combo colours",
+                            Colours =
+                            {
+                                Colour4.Red,
+                                Colour4.Green,
+                                Colour4.Blue,
+                                Colour4.Yellow,
+                            }
+                        },
                     },
                 },
             }

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

@@ -0,0 +1,63 @@
+// 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.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions.ObjectExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Overlays;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    public partial class TestSceneFormSliderBar : OsuTestScene
+    {
+        [Cached]
+        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Aquamarine);
+
+        [Test]
+        public void TestTransferValueOnCommit()
+        {
+            OsuSpriteText text;
+            FormSliderBar<float> slider = null!;
+
+            AddStep("create content", () =>
+            {
+                Child = new FillFlowContainer
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Width = 0.5f,
+                    Direction = FillDirection.Vertical,
+                    Spacing = new Vector2(10),
+                    Children = new Drawable[]
+                    {
+                        text = new OsuSpriteText(),
+                        slider = new FormSliderBar<float>
+                        {
+                            Caption = "Slider",
+                            Current = new BindableFloat
+                            {
+                                MinValue = 0,
+                                MaxValue = 10,
+                                Precision = 0.1f,
+                                Default = 5f,
+                            }
+                        },
+                    }
+                };
+                slider.Current.BindValueChanged(_ => text.Text = $"Current value is: {slider.Current.Value}", true);
+            });
+            AddToggleStep("toggle transfer value on commit", b =>
+            {
+                if (slider.IsNotNull())
+                    slider.TransferValueOnCommit = b;
+            });
+        }
+    }
+}

osu.Game.Tournament/Screens/Editors/Components/DeleteRoundDialog.cs

@@ -2,18 +2,16 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Overlays.Dialog;
 using osu.Game.Tournament.Models;
 
 namespace osu.Game.Tournament.Screens.Editors.Components
 {
-    public partial class DeleteRoundDialog : DangerousActionDialog
+    public partial class DeleteRoundDialog : DeletionDialog
     {
         public DeleteRoundDialog(TournamentRound round, Action action)
         {
             HeaderText = round.Name.Value.Length > 0 ? $@"Delete round ""{round.Name.Value}""?" : @"Delete unnamed round?";
-            Icon = FontAwesome.Solid.Trash;
             DangerousAction = action;
         }
     }

osu.Game.Tournament/Screens/Editors/Components/DeleteTeamDialog.cs

@@ -2,20 +2,18 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Overlays.Dialog;
 using osu.Game.Tournament.Models;
 
 namespace osu.Game.Tournament.Screens.Editors.Components
 {
-    public partial class DeleteTeamDialog : DangerousActionDialog
+    public partial class DeleteTeamDialog : DeletionDialog
     {
         public DeleteTeamDialog(TournamentTeam team, Action action)
         {
             HeaderText = team.FullName.Value.Length > 0 ? $@"Delete team ""{team.FullName.Value}""?" :
                 team.Acronym.Value.Length > 0 ? $@"Delete team ""{team.Acronym.Value}""?" :
                 @"Delete unnamed team?";
-            Icon = FontAwesome.Solid.Trash;
             DangerousAction = action;
         }
     }

osu.Game/Collections/DeleteCollectionDialog.cs

@@ -8,7 +8,7 @@ using osu.Game.Overlays.Dialog;
 
 namespace osu.Game.Collections
 {
-    public partial class DeleteCollectionDialog : DangerousActionDialog
+    public partial class DeleteCollectionDialog : DeletionDialog
     {
         public DeleteCollectionDialog(Live<BeatmapCollection> collection, Action deleteAction)
         {

osu.Game/Database/BackgroundDataStoreProcessor.cs

@@ -606,7 +606,7 @@ namespace osu.Game.Database
         {
             // Importantly, also sleep if high performance session is active.
             // If we don't do this, memory usage can become runaway due to GC running in a more lenient mode.
-            while (localUserPlayInfo?.IsPlaying.Value == true || highPerformanceSessionManager?.IsSessionActive == true)
+            while (localUserPlayInfo?.PlayingState.Value != LocalUserPlayingState.NotPlaying || highPerformanceSessionManager?.IsSessionActive == true)
             {
                 Logger.Log("Background processing sleeping due to active gameplay...");
                 Thread.Sleep(TimeToSleepDuringGameplay);

osu.Game/Database/DetachedBeatmapStore.cs

@@ -44,7 +44,7 @@ namespace osu.Game.Database
         {
             if (changes == null)
             {
-                if (detachedBeatmapSets.Count > 0 && sender.Count == 0)
+                if (sender is RealmResetEmptySet<BeatmapSetInfo>)
                 {
                     // Usually we'd reset stuff here, but doing so triggers a silly flow which ends up deadlocking realm.
                     // Additionally, user should not be at song select when realm is blocking all operations in the first place.

osu.Game/Database/RealmAccess.cs

@@ -568,7 +568,7 @@ namespace osu.Game.Database
             lock (notificationsResetMap)
             {
                 // Store an action which is used when blocking to ensure consumers don't use results of a stale changeset firing.
-                notificationsResetMap.Add(action, () => callback(new EmptyRealmSet<T>(), null));
+                notificationsResetMap.Add(action, () => callback(new RealmResetEmptySet<T>(), null));
             }
 
             return RegisterCustomSubscription(action);

osu.Game/Database/RealmResetEmptySet.cs

@@ -12,7 +12,13 @@ using Realms.Schema;
 
 namespace osu.Game.Database
 {
-    public class EmptyRealmSet<T> : IRealmCollection<T>
+    /// <summary>
+    /// This can arrive in <see cref="RealmAccess.RegisterForNotifications{T}"/> callbacks to imply that realm access has been reset.
+    /// </summary>
+    /// <remarks>
+    /// Usually implies that the original database may return soon and the callback can usually be silently ignored.
+    ///</remarks>
+    public class RealmResetEmptySet<T> : IRealmCollection<T>
     {
         private IList<T> emptySet => Array.Empty<T>();
 

osu.Game/Graphics/UserInterface/DrawableOsuMenuItem.cs

@@ -6,6 +6,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -26,6 +27,8 @@ namespace osu.Game.Graphics.UserInterface
         public const int TEXT_SIZE = 17;
         public const int TRANSITION_LENGTH = 80;
 
+        public BindableBool ShowCheckbox { get; } = new BindableBool();
+
         private TextContainer text;
         private HotkeyDisplay hotkey;
         private HoverClickSounds hoverClickSounds;
@@ -72,6 +75,7 @@ namespace osu.Game.Graphics.UserInterface
         {
             base.LoadComplete();
 
+            ShowCheckbox.BindValueChanged(_ => updateState());
             Item.Action.BindDisabledChanged(_ => updateState(), true);
             FinishTransforms();
         }
@@ -138,6 +142,8 @@ namespace osu.Game.Graphics.UserInterface
                 text.BoldText.FadeOut(TRANSITION_LENGTH, Easing.OutQuint);
                 text.NormalText.FadeIn(TRANSITION_LENGTH, Easing.OutQuint);
             }
+
+            text.CheckboxContainer.Alpha = ShowCheckbox.Value ? 1 : 0;
         }
 
         protected sealed override Drawable CreateContent() => text = CreateTextContainer();

osu.Game/Graphics/UserInterface/OsuMenu.cs

@@ -42,6 +42,25 @@ namespace osu.Game.Graphics.UserInterface
             sampleClose = audio.Samples.Get(@"UI/dropdown-close");
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            bool showCheckboxes = false;
+
+            foreach (var drawableItem in ItemsContainer)
+            {
+                if (drawableItem.Item is StatefulMenuItem)
+                    showCheckboxes = true;
+            }
+
+            foreach (var drawableItem in ItemsContainer)
+            {
+                if (drawableItem is DrawableOsuMenuItem osuItem)
+                    osuItem.ShowCheckbox.Value = showCheckboxes;
+            }
+        }
+
         protected override void AnimateOpen()
         {
             if (!TopLevelMenu && !wasOpened)

osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs

@@ -0,0 +1,238 @@
+// 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.Specialized;
+using System.Linq;
+using osu.Framework.Allocation;
+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.Events;
+using osu.Framework.Localisation;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays;
+using osu.Game.Resources.Localisation.Web;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Graphics.UserInterfaceV2
+{
+    public partial class FormColourPalette : CompositeDrawable
+    {
+        public BindableList<Colour4> Colours { get; } = new BindableList<Colour4>();
+
+        public LocalisableString Caption { get; init; }
+        public LocalisableString HintText { get; init; }
+
+        private Box background = null!;
+        private FormFieldCaption caption = null!;
+        private FillFlowContainer flow = null!;
+
+        [Resolved]
+        private OverlayColourProvider colourProvider { get; set; } = null!;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            RelativeSizeAxes = Axes.X;
+            AutoSizeAxes = Axes.Y;
+
+            Masking = true;
+            CornerRadius = 5;
+
+            RoundedButton button;
+
+            InternalChildren = new Drawable[]
+            {
+                background = new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = colourProvider.Background5,
+                },
+                new FillFlowContainer
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding(9),
+                    Spacing = new Vector2(7),
+                    Direction = FillDirection.Vertical,
+                    Children = new Drawable[]
+                    {
+                        caption = new FormFieldCaption
+                        {
+                            Caption = Caption,
+                            TooltipText = HintText,
+                        },
+                        flow = new FillFlowContainer
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Direction = FillDirection.Full,
+                            Spacing = new Vector2(5),
+                            Child = button = new RoundedButton
+                            {
+                                Action = addNewColour,
+                                Size = new Vector2(70),
+                                Text = "+",
+                            }
+                        }
+                    },
+                },
+            };
+
+            flow.SetLayoutPosition(button, float.MaxValue);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            Colours.BindCollectionChanged((_, args) =>
+            {
+                if (args.Action != NotifyCollectionChangedAction.Replace)
+                    updateColours();
+            }, true);
+            updateState();
+        }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            updateState();
+            return true;
+        }
+
+        protected override void OnHoverLost(HoverLostEvent e)
+        {
+            base.OnHoverLost(e);
+            updateState();
+        }
+
+        private void addNewColour()
+        {
+            Color4 startingColour = Colours.Count > 0
+                ? Colours.Last()
+                : Colour4.White;
+
+            Colours.Add(startingColour);
+            flow.OfType<ColourButton>().Last().TriggerClick();
+        }
+
+        private void updateState()
+        {
+            background.Colour = colourProvider.Background5;
+            caption.Colour = colourProvider.Content2;
+
+            BorderThickness = IsHovered ? 2 : 0;
+
+            if (IsHovered)
+                BorderColour = colourProvider.Light4;
+        }
+
+        private void updateColours()
+        {
+            flow.RemoveAll(d => d is ColourButton, true);
+
+            for (int i = 0; i < Colours.Count; ++i)
+            {
+                // copy to avoid accesses to modified closure.
+                int colourIndex = i;
+                var colourButton = new ColourButton { Current = { Value = Colours[colourIndex] } };
+                colourButton.Current.BindValueChanged(colour => Colours[colourIndex] = colour.NewValue);
+                colourButton.DeleteRequested = () => Colours.RemoveAt(colourIndex);
+                flow.Add(colourButton);
+            }
+        }
+
+        private partial class ColourButton : OsuClickableContainer, IHasPopover, IHasContextMenu
+        {
+            public Bindable<Colour4> Current { get; } = new Bindable<Colour4>();
+            public Action? DeleteRequested { get; set; }
+
+            private Box background = null!;
+            private OsuSpriteText hexCode = null!;
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                Size = new Vector2(70);
+
+                Masking = true;
+                CornerRadius = 35;
+                Action = this.ShowPopover;
+
+                Children = new Drawable[]
+                {
+                    background = new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                    },
+                    hexCode = new OsuSpriteText
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                    },
+                };
+            }
+
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
+
+                Current.BindValueChanged(_ => updateState(), true);
+            }
+
+            public Popover GetPopover() => new ColourPickerPopover
+            {
+                Current = { BindTarget = Current }
+            };
+
+            public MenuItem[] ContextMenuItems => new MenuItem[]
+            {
+                new OsuMenuItem(CommonStrings.ButtonsDelete, MenuItemType.Destructive, () => DeleteRequested?.Invoke())
+            };
+
+            private void updateState()
+            {
+                background.Colour = Current.Value;
+                hexCode.Text = Current.Value.ToHex();
+                hexCode.Colour = OsuColour.ForegroundTextColourFor(Current.Value);
+            }
+        }
+
+        private partial class ColourPickerPopover : OsuPopover, IHasCurrentValue<Colour4>
+        {
+            public Bindable<Colour4> Current
+            {
+                get => current.Current;
+                set => current.Current = value;
+            }
+
+            private readonly BindableWithCurrent<Colour4> current = new BindableWithCurrent<Colour4>();
+
+            public ColourPickerPopover()
+                : base(false)
+            {
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OverlayColourProvider colourProvider)
+            {
+                Child = new OsuColourPicker
+                {
+                    Current = { BindTarget = Current }
+                };
+
+                Body.BorderThickness = 2;
+                Body.BorderColour = colourProvider.Highlight1;
+                Content.Padding = new MarginPadding(2);
+            }
+        }
+    }
+}

osu.Game/Graphics/UserInterfaceV2/FormFileSelector.cs

@@ -68,6 +68,8 @@ namespace osu.Game.Graphics.UserInterfaceV2
         /// </summary>
         public LocalisableString PlaceholderText { get; init; }
 
+        public Container PreviewContainer { get; private set; } = null!;
+
         private Box background = null!;
 
         private FormFieldCaption caption = null!;
@@ -89,7 +91,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
         private void load()
         {
             RelativeSizeAxes = Axes.X;
-            Height = 50;
+            AutoSizeAxes = Axes.Y;
 
             Masking = true;
             CornerRadius = 5;
@@ -101,9 +103,23 @@ namespace osu.Game.Graphics.UserInterfaceV2
                     RelativeSizeAxes = Axes.Both,
                     Colour = colourProvider.Background5,
                 },
+                PreviewContainer = new Container
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding
+                    {
+                        Horizontal = 1.5f,
+                        Top = 1.5f,
+                        Bottom = 50
+                    },
+                },
                 new Container
                 {
-                    RelativeSizeAxes = Axes.Both,
+                    RelativeSizeAxes = Axes.X,
+                    Height = 50,
+                    Anchor = Anchor.BottomLeft,
+                    Origin = Anchor.BottomLeft,
                     Padding = new MarginPadding(9),
                     Children = new Drawable[]
                     {
@@ -148,12 +164,13 @@ namespace osu.Game.Graphics.UserInterfaceV2
             base.LoadComplete();
 
             popoverState.BindValueChanged(_ => updateState());
+            current.BindDisabledChanged(_ => updateState());
             current.BindValueChanged(_ =>
             {
                 updateState();
                 onFileSelected();
-            });
-            current.BindDisabledChanged(_ => updateState(), true);
+            }, true);
+            FinishTransforms(true);
             game.RegisterImportHandler(this);
         }
 
@@ -189,7 +206,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
         private void updateState()
         {
             caption.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content2;
-            filenameText.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content1;
+            filenameText.Colour = Current.Disabled || Current.Value == null ? colourProvider.Foreground1 : colourProvider.Content1;
 
             if (!Current.Disabled)
             {

osu.Game/Graphics/UserInterfaceV2/FormNumberBox.cs

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Globalization;
+
 namespace osu.Game.Graphics.UserInterfaceV2
 {
     public partial class FormNumberBox : FormTextBox
@@ -10,6 +12,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
         internal override InnerTextBox CreateTextBox() => new InnerNumberBox
         {
             AllowDecimals = AllowDecimals,
+            SelectAllOnFocus = true,
         };
 
         internal partial class InnerNumberBox : InnerTextBox
@@ -17,7 +20,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
             public bool AllowDecimals { get; init; }
 
             protected override bool CanAddCharacter(char character)
-                => char.IsAsciiDigit(character) || (AllowDecimals && character == '.');
+                => char.IsAsciiDigit(character) || (AllowDecimals && CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator.Contains(character));
         }
     }
 }

osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs

@@ -17,6 +17,7 @@ using osu.Framework.Input;
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Localisation;
 using osu.Game.Overlays;
 
 namespace osu.Game.Graphics.UserInterfaceV2
@@ -27,27 +28,23 @@ namespace osu.Game.Graphics.UserInterfaceV2
         public Bindable<T> Current
         {
             get => current.Current;
-            set => current.Current = value;
-        }
-
-        private bool instantaneous = true;
-
-        /// <summary>
-        /// Whether changes to the slider should instantaneously transfer to the text box (and vice versa).
-        /// If <see langword="false"/>, the transfer will happen on text box commit (explicit, or implicit via focus loss), or on slider drag end.
-        /// </summary>
-        public bool Instantaneous
-        {
-            get => instantaneous;
             set
             {
-                instantaneous = value;
-
-                if (slider.IsNotNull())
-                    slider.TransferValueOnCommit = !instantaneous;
+                current.Current = value;
+                currentNumberInstantaneous.Default = current.Default;
             }
         }
 
+        private readonly BindableNumberWithCurrent<T> current = new BindableNumberWithCurrent<T>();
+
+        private readonly BindableNumber<T> currentNumberInstantaneous = new BindableNumber<T>();
+
+        /// <summary>
+        /// Whether changes to the value should instantaneously transfer to outside bindables.
+        /// If <see langword="false"/>, the transfer will happen on text box commit (explicit, or implicit via focus loss), or on slider commit.
+        /// </summary>
+        public bool TransferValueOnCommit { get; set; }
+
         private CompositeDrawable? tabbableContentContainer;
 
         public CompositeDrawable? TabbableContentContainer
@@ -61,8 +58,6 @@ namespace osu.Game.Graphics.UserInterfaceV2
             }
         }
 
-        private readonly BindableNumberWithCurrent<T> current = new BindableNumberWithCurrent<T>();
-
         /// <summary>
         /// Caption describing this slider bar, displayed on top of the controls.
         /// </summary>
@@ -83,8 +78,10 @@ namespace osu.Game.Graphics.UserInterfaceV2
         [Resolved]
         private OverlayColourProvider colourProvider { get; set; } = null!;
 
+        private readonly Bindable<Language> currentLanguage = new Bindable<Language>();
+
         [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
+        private void load(OsuColour colours, OsuGame? game)
         {
             RelativeSizeAxes = Axes.X;
             Height = 50;
@@ -107,7 +104,12 @@ namespace osu.Game.Graphics.UserInterfaceV2
                 new Container
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Padding = new MarginPadding(9),
+                    Padding = new MarginPadding
+                    {
+                        Vertical = 9,
+                        Left = 9,
+                        Right = 5,
+                    },
                     Children = new Drawable[]
                     {
                         caption = new FormFieldCaption
@@ -139,12 +141,15 @@ namespace osu.Game.Graphics.UserInterfaceV2
                             Origin = Anchor.CentreRight,
                             RelativeSizeAxes = Axes.X,
                             Width = 0.5f,
-                            Current = Current,
-                            TransferValueOnCommit = !instantaneous,
+                            Current = currentNumberInstantaneous,
+                            OnCommit = () => current.Value = currentNumberInstantaneous.Value,
                         }
                     },
                 },
             };
+
+            if (game != null)
+                currentLanguage.BindTo(game.CurrentLanguage);
         }
 
         protected override void LoadComplete()
@@ -159,10 +164,30 @@ namespace osu.Game.Graphics.UserInterfaceV2
 
             slider.IsDragging.BindValueChanged(_ => updateState());
 
-            current.BindValueChanged(_ =>
+            current.ValueChanged += e => currentNumberInstantaneous.Value = e.NewValue;
+            current.MinValueChanged += v => currentNumberInstantaneous.MinValue = v;
+            current.MaxValueChanged += v => currentNumberInstantaneous.MaxValue = v;
+            current.PrecisionChanged += v => currentNumberInstantaneous.Precision = v;
+            current.DisabledChanged += disabled =>
             {
+                if (disabled)
+                {
+                    // revert any changes before disabling to make sure we are in a consistent state.
+                    currentNumberInstantaneous.Value = current.Value;
+                }
+
+                currentNumberInstantaneous.Disabled = disabled;
+            };
+
+            current.CopyTo(currentNumberInstantaneous);
+            currentLanguage.BindValueChanged(_ => Schedule(updateValueDisplay));
+            currentNumberInstantaneous.BindValueChanged(e =>
+            {
+                if (!TransferValueOnCommit)
+                    current.Value = e.NewValue;
+
                 updateState();
-                updateTextBoxFromSlider();
+                updateValueDisplay();
             }, true);
         }
 
@@ -170,17 +195,15 @@ namespace osu.Game.Graphics.UserInterfaceV2
 
         private void textChanged(ValueChangedEvent<string> change)
         {
-            if (!instantaneous) return;
-
             tryUpdateSliderFromTextBox();
         }
 
         private void textCommitted(TextBox t, bool isNew)
         {
             tryUpdateSliderFromTextBox();
-
             // If the attempted update above failed, restore text box to match the slider.
-            Current.TriggerChange();
+            currentNumberInstantaneous.TriggerChange();
+            current.Value = currentNumberInstantaneous.Value;
 
             flashLayer.Colour = ColourInfo.GradientVertical(colourProvider.Dark2.Opacity(0), colourProvider.Dark2);
             flashLayer.FadeOutFromOne(800, Easing.OutQuint);
@@ -192,7 +215,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
 
             try
             {
-                switch (Current)
+                switch (currentNumberInstantaneous)
                 {
                     case Bindable<int> bindableInt:
                         bindableInt.Value = int.Parse(textBox.Current.Value);
@@ -203,7 +226,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
                         break;
 
                     default:
-                        Current.Parse(textBox.Current.Value, CultureInfo.CurrentCulture);
+                        currentNumberInstantaneous.Parse(textBox.Current.Value, CultureInfo.CurrentCulture);
                         break;
                 }
             }
@@ -238,9 +261,9 @@ namespace osu.Game.Graphics.UserInterfaceV2
         {
             textBox.Alpha = 1;
 
-            background.Colour = Current.Disabled ? colourProvider.Background4 : colourProvider.Background5;
-            caption.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content2;
-            textBox.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content1;
+            background.Colour = currentNumberInstantaneous.Disabled ? colourProvider.Background4 : colourProvider.Background5;
+            caption.Colour = currentNumberInstantaneous.Disabled ? colourProvider.Foreground1 : colourProvider.Content2;
+            textBox.Colour = currentNumberInstantaneous.Disabled ? colourProvider.Foreground1 : colourProvider.Content1;
 
             BorderThickness = IsHovered || textBox.Focused.Value || slider.IsDragging.Value ? 2 : 0;
             BorderColour = textBox.Focused.Value ? colourProvider.Highlight1 : colourProvider.Light4;
@@ -253,16 +276,17 @@ namespace osu.Game.Graphics.UserInterfaceV2
                 background.Colour = colourProvider.Background5;
         }
 
-        private void updateTextBoxFromSlider()
+        private void updateValueDisplay()
         {
             if (updatingFromTextBox) return;
 
-            textBox.Text = slider.GetDisplayableValue(Current.Value).ToString();
+            textBox.Text = slider.GetDisplayableValue(currentNumberInstantaneous.Value).ToString();
         }
 
         private partial class Slider : OsuSliderBar<T>
         {
             public BindableBool IsDragging { get; set; } = new BindableBool();
+            public Action? OnCommit { get; set; }
 
             private Box leftBox = null!;
             private Box rightBox = null!;
@@ -369,6 +393,16 @@ namespace osu.Game.Graphics.UserInterfaceV2
             {
                 nub.MoveToX(value, 200, Easing.OutPow10);
             }
+
+            protected override bool Commit()
+            {
+                bool result = base.Commit();
+
+                if (result)
+                    OnCommit?.Invoke();
+
+                return result;
+            }
         }
     }
 }

osu.Game/Graphics/UserInterfaceV2/FormTextBox.cs

@@ -202,6 +202,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
             }
             else
             {
+                BorderThickness = 0;
                 background.Colour = colourProvider.Background4;
             }
         }

osu.Game/Input/ConfineMouseTracker.cs

@@ -15,7 +15,7 @@ namespace osu.Game.Input
 {
     /// <summary>
     /// Connects <see cref="OsuSetting.ConfineMouseMode"/> with <see cref="FrameworkSetting.ConfineMouseMode"/>.
-    /// If <see cref="OsuGame.LocalUserPlaying"/> is true, we should also confine the mouse cursor if it has been
+    /// If <see cref="ILocalUserPlayInfo.PlayingState"/> is playing, we should also confine the mouse cursor if it has been
     /// requested with <see cref="OsuConfineMouseMode.DuringGameplay"/>.
     /// </summary>
     public partial class ConfineMouseTracker : Component
@@ -25,7 +25,7 @@ namespace osu.Game.Input
         private Bindable<bool> frameworkMinimiseOnFocusLossInFullscreen;
 
         private Bindable<OsuConfineMouseMode> osuConfineMode;
-        private IBindable<bool> localUserPlaying;
+        private IBindable<LocalUserPlayingState> localUserPlaying;
 
         [BackgroundDependencyLoader]
         private void load(ILocalUserPlayInfo localUserInfo, FrameworkConfigManager frameworkConfigManager, OsuConfigManager osuConfigManager)
@@ -37,7 +37,7 @@ namespace osu.Game.Input
             frameworkMinimiseOnFocusLossInFullscreen.BindValueChanged(_ => updateConfineMode());
 
             osuConfineMode = osuConfigManager.GetBindable<OsuConfineMouseMode>(OsuSetting.ConfineMouseMode);
-            localUserPlaying = localUserInfo.IsPlaying.GetBoundCopy();
+            localUserPlaying = localUserInfo.PlayingState.GetBoundCopy();
 
             osuConfineMode.ValueChanged += _ => updateConfineMode();
             localUserPlaying.BindValueChanged(_ => updateConfineMode(), true);
@@ -63,7 +63,7 @@ namespace osu.Game.Input
                     break;
 
                 case OsuConfineMouseMode.DuringGameplay:
-                    frameworkConfineMode.Value = localUserPlaying.Value ? ConfineMouseMode.Always : ConfineMouseMode.Never;
+                    frameworkConfineMode.Value = localUserPlaying.Value == LocalUserPlayingState.Playing ? ConfineMouseMode.Always : ConfineMouseMode.Never;
                     break;
 
                 case OsuConfineMouseMode.Always:

osu.Game/Input/OsuUserInputManager.cs

@@ -3,15 +3,16 @@
 
 using osu.Framework.Bindables;
 using osu.Framework.Input;
+using osu.Game.Screens.Play;
 using osuTK.Input;
 
 namespace osu.Game.Input
 {
     public partial class OsuUserInputManager : UserInputManager
     {
-        protected override bool AllowRightClickFromLongTouch => !LocalUserPlaying.Value;
+        protected override bool AllowRightClickFromLongTouch => PlayingState.Value != LocalUserPlayingState.Playing;
 
-        public readonly BindableBool LocalUserPlaying = new BindableBool();
+        public readonly IBindable<LocalUserPlayingState> PlayingState = new Bindable<LocalUserPlayingState>();
 
         internal OsuUserInputManager()
         {

osu.Game/Localisation/DialogStrings.cs

@@ -12,7 +12,12 @@ namespace osu.Game.Localisation
         /// <summary>
         /// "Caution"
         /// </summary>
-        public static LocalisableString Caution => new TranslatableString(getKey(@"header_text"), @"Caution");
+        public static LocalisableString CautionHeaderText => new TranslatableString(getKey(@"header_text"), @"Caution");
+
+        /// <summary>
+        /// "Are you sure you want to delete the following:"
+        /// </summary>
+        public static LocalisableString DeletionHeaderText => new TranslatableString(getKey(@"deletion_header_text"), @"Are you sure you want to delete the following:");
 
         /// <summary>
         /// "Yes. Go for it."

osu.Game/Online/Chat/ExternalLinkOpener.cs

@@ -46,7 +46,7 @@ namespace osu.Game.Online.Chat
         {
             public ExternalLinkDialog(string url, Action openExternalLinkAction, Action copyExternalLinkAction)
             {
-                HeaderText = DialogStrings.Caution;
+                HeaderText = DialogStrings.CautionHeaderText;
                 BodyText = $"Are you sure you want to open the following link in a web browser?\n\n{url}";
 
                 Icon = FontAwesome.Solid.ExclamationTriangle;

osu.Game/Online/Chat/StandAloneChatDisplay.cs

@@ -205,7 +205,6 @@ namespace osu.Game.Online.Chat
 
         protected partial class StandAloneMessage : ChatLine
         {
-            protected override float FontSize => 13;
             protected override float Spacing => 5;
             protected override float UsernameWidth => 90;
 

osu.Game/OsuGame.cs

@@ -175,14 +175,9 @@ namespace osu.Game
         /// </summary>
         public readonly IBindable<OverlayActivation> OverlayActivationMode = new Bindable<OverlayActivation>();
 
-        /// <summary>
-        /// Whether the local user is currently interacting with the game in a way that should not be interrupted.
-        /// </summary>
-        /// <remarks>
-        /// This is exclusively managed by <see cref="Player"/>. If other components are mutating this state, a more
-        /// resilient method should be used to ensure correct state.
-        /// </remarks>
-        public Bindable<bool> LocalUserPlaying = new BindableBool();
+        IBindable<LocalUserPlayingState> ILocalUserPlayInfo.PlayingState => playingState;
+
+        private readonly Bindable<LocalUserPlayingState> playingState = new Bindable<LocalUserPlayingState>();
 
         protected OsuScreenStack ScreenStack;
 
@@ -302,7 +297,7 @@ namespace osu.Game
         protected override UserInputManager CreateUserInputManager()
         {
             var userInputManager = base.CreateUserInputManager();
-            (userInputManager as OsuUserInputManager)?.LocalUserPlaying.BindTo(LocalUserPlaying);
+            (userInputManager as OsuUserInputManager)?.PlayingState.BindTo(playingState);
             return userInputManager;
         }
 
@@ -391,11 +386,11 @@ namespace osu.Game
             // Transfer any runtime changes back to configuration file.
             SkinManager.CurrentSkinInfo.ValueChanged += skin => configSkin.Value = skin.NewValue.ID.ToString();
 
-            LocalUserPlaying.BindValueChanged(p =>
+            playingState.BindValueChanged(p =>
             {
-                BeatmapManager.PauseImports = p.NewValue;
-                SkinManager.PauseImports = p.NewValue;
-                ScoreManager.PauseImports = p.NewValue;
+                BeatmapManager.PauseImports = p.NewValue != LocalUserPlayingState.NotPlaying;
+                SkinManager.PauseImports = p.NewValue != LocalUserPlayingState.NotPlaying;
+                ScoreManager.PauseImports = p.NewValue != LocalUserPlayingState.NotPlaying;
             }, true);
 
             IsActive.BindValueChanged(active => updateActiveState(active.NewValue), true);
@@ -1553,6 +1548,16 @@ namespace osu.Game
                 scope.SetTag(@"screen", newScreen?.GetType().ReadableName() ?? @"none");
             });
 
+            switch (current)
+            {
+                case Player player:
+                    player.PlayingState.UnbindFrom(playingState);
+
+                    // reset for sanity.
+                    playingState.Value = LocalUserPlayingState.NotPlaying;
+                    break;
+            }
+
             switch (newScreen)
             {
                 case IntroScreen intro:
@@ -1565,14 +1570,15 @@ namespace osu.Game
                     versionManager?.Show();
                     break;
 
+                case Player player:
+                    player.PlayingState.BindTo(playingState);
+                    break;
+
                 default:
                     versionManager?.Hide();
                     break;
             }
 
-            // reset on screen change for sanity.
-            LocalUserPlaying.Value = false;
-
             if (current is IOsuScreen currentOsuScreen)
             {
                 OverlayActivationMode.UnbindFrom(currentOsuScreen.OverlayActivationMode);
@@ -1621,7 +1627,5 @@ namespace osu.Game
             if (newScreen == null)
                 Exit();
         }
-
-        IBindable<bool> ILocalUserPlayInfo.IsPlaying => LocalUserPlaying;
     }
 }

osu.Game/OsuGameBase.cs

@@ -541,7 +541,10 @@ namespace osu.Game
                         realmBlocker = realm.BlockAllOperations("migration");
                         success = true;
                     }
-                    catch { }
+                    catch (Exception ex)
+                    {
+                        Logger.Log($"Attempting to block all operations failed: {ex}", LoggingTarget.Database);
+                    }
 
                     readyToRun.Set();
                 }, false);

osu.Game/Overlays/BeatmapListingOverlay.cs

@@ -98,7 +98,7 @@ namespace osu.Game.Overlays
             apiUser.BindValueChanged(_ => Schedule(() =>
             {
                 if (api.IsLoggedIn)
-                    replaceResultsAreaContent(Drawable.Empty());
+                    replaceResultsAreaContent(Empty());
             }));
         }
 

osu.Game/Overlays/BeatmapSetOverlay.cs

@@ -3,8 +3,6 @@
 
 #nullable disable
 
-using System;
-using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -16,8 +14,6 @@ using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Overlays.BeatmapSet.Scores;
 using osu.Game.Overlays.Comments;
-using osu.Game.Rulesets.Mods;
-using osu.Game.Screens.Select.Details;
 using osuTK;
 using osuTK.Graphics;
 
@@ -37,14 +33,6 @@ namespace osu.Game.Overlays
 
         private (BeatmapSetLookupType type, int id)? lastLookup;
 
-        /// <remarks>
-        /// Isolates the beatmap set overlay from the game-wide selected mods bindable
-        /// to avoid affecting the beatmap details section (i.e. <see cref="AdvancedStats.StatisticRow"/>).
-        /// </remarks>
-        [Cached]
-        [Cached(typeof(IBindable<IReadOnlyList<Mod>>))]
-        protected readonly Bindable<IReadOnlyList<Mod>> SelectedMods = new Bindable<IReadOnlyList<Mod>>(Array.Empty<Mod>());
-
         public BeatmapSetOverlay()
             : base(OverlayColourScheme.Blue)
         {

osu.Game/Overlays/Chat/ChatLine.cs

@@ -48,7 +48,7 @@ namespace osu.Game.Overlays.Chat
 
         public IReadOnlyCollection<Drawable> DrawableContentFlow => drawableContentFlow;
 
-        protected virtual float FontSize => 12;
+        private const float font_size = 13;
 
         protected virtual float Spacing => 15;
 
@@ -183,13 +183,13 @@ namespace osu.Game.Overlays.Chat
                                 Anchor = Anchor.TopLeft,
                                 Origin = Anchor.TopLeft,
                                 Spacing = new Vector2(-1, 0),
-                                Font = OsuFont.GetFont(size: FontSize, weight: FontWeight.SemiBold, fixedWidth: true),
+                                Font = OsuFont.GetFont(size: font_size, weight: FontWeight.SemiBold, fixedWidth: true),
                                 AlwaysPresent = true,
                             },
                             drawableUsername = new DrawableChatUsername(message.Sender)
                             {
                                 Width = UsernameWidth,
-                                FontSize = FontSize,
+                                FontSize = font_size,
                                 AutoSizeAxes = Axes.Y,
                                 Origin = Anchor.TopRight,
                                 Anchor = Anchor.TopRight,
@@ -258,7 +258,7 @@ namespace osu.Game.Overlays.Chat
         private void styleMessageContent(SpriteText text)
         {
             text.Shadow = false;
-            text.Font = text.Font.With(size: FontSize, italics: Message.IsAction, weight: isMention ? FontWeight.SemiBold : FontWeight.Medium);
+            text.Font = text.Font.With(size: font_size, italics: Message.IsAction, weight: isMention ? FontWeight.SemiBold : FontWeight.Medium);
 
             Color4 messageColour = colourProvider?.Content1 ?? Colour4.White;
 

osu.Game/Overlays/Chat/DaySeparator.cs

@@ -75,7 +75,7 @@ namespace osu.Game.Overlays.Chat
                                         Height = LineHeight,
                                         Colour = colourProvider?.Background5 ?? Colour4.White,
                                     },
-                                    Drawable.Empty(),
+                                    Empty(),
                                     new OsuSpriteText
                                     {
                                         Anchor = Anchor.CentreRight,
@@ -87,7 +87,7 @@ namespace osu.Game.Overlays.Chat
                                 }
                             },
                         },
-                        Drawable.Empty(),
+                        Empty(),
                         new Circle
                         {
                             Anchor = Anchor.Centre,

osu.Game/Overlays/Dialog/DangerousActionDialog.cs

@@ -30,9 +30,9 @@ namespace osu.Game.Overlays.Dialog
 
         protected DangerousActionDialog()
         {
-            HeaderText = DialogStrings.Caution;
+            HeaderText = DialogStrings.CautionHeaderText;
 
-            Icon = FontAwesome.Regular.TrashAlt;
+            Icon = FontAwesome.Solid.ExclamationTriangle;
 
             Buttons = new PopupDialogButton[]
             {

osu.Game/Overlays/Dialog/DeletionDialog.cs

@@ -0,0 +1,20 @@
+// 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.Graphics.Sprites;
+using osu.Game.Localisation;
+
+namespace osu.Game.Overlays.Dialog
+{
+    /// <summary>
+    /// A dialog which provides confirmation for deletion of something.
+    /// </summary>
+    public abstract partial class DeletionDialog : DangerousActionDialog
+    {
+        protected DeletionDialog()
+        {
+            HeaderText = DialogStrings.DeletionHeaderText;
+            Icon = FontAwesome.Solid.Trash;
+        }
+    }
+}

osu.Game/Overlays/Mods/DeleteModPresetDialog.cs

@@ -7,7 +7,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Overlays.Mods
 {
-    public partial class DeleteModPresetDialog : DangerousActionDialog
+    public partial class DeleteModPresetDialog : DeletionDialog
     {
         public DeleteModPresetDialog(Live<ModPreset> modPreset)
         {

osu.Game/Overlays/MusicController.cs

@@ -72,7 +72,7 @@ namespace osu.Game.Overlays
         private AudioFilter audioDuckFilter = null!;
 
         private readonly Bindable<RandomSelectAlgorithm> randomSelectAlgorithm = new Bindable<RandomSelectAlgorithm>();
-        private readonly List<BeatmapSetInfo> previousRandomSets = new List<BeatmapSetInfo>();
+        private readonly List<Live<BeatmapSetInfo>> previousRandomSets = new List<Live<BeatmapSetInfo>>();
         private int randomHistoryDirection;
 
         [BackgroundDependencyLoader]
@@ -249,19 +249,19 @@ namespace osu.Game.Overlays
 
             queuedDirection = TrackChangeDirection.Prev;
 
-            BeatmapSetInfo? playableSet;
+            Live<BeatmapSetInfo>? playableSet;
 
             if (Shuffle.Value)
                 playableSet = getNextRandom(-1, allowProtectedTracks);
             else
             {
-                playableSet = getBeatmapSets().AsEnumerable().TakeWhile(i => !i.Equals(current?.BeatmapSetInfo)).LastOrDefault(s => !s.Protected || allowProtectedTracks)
-                              ?? getBeatmapSets().AsEnumerable().LastOrDefault(s => !s.Protected || allowProtectedTracks);
+                playableSet = getBeatmapSets().TakeWhile(i => !i.Value.Equals(current?.BeatmapSetInfo)).LastOrDefault(s => !s.Value.Protected || allowProtectedTracks)
+                              ?? getBeatmapSets().LastOrDefault(s => !s.Value.Protected || allowProtectedTracks);
             }
 
             if (playableSet != null)
             {
-                changeBeatmap(beatmaps.GetWorkingBeatmap(playableSet.Beatmaps.First()));
+                changeBeatmap(beatmaps.GetWorkingBeatmap(playableSet.Value.Beatmaps.First()));
                 restartTrack();
                 return PreviousTrackResult.Previous;
             }
@@ -345,19 +345,19 @@ namespace osu.Game.Overlays
 
             queuedDirection = TrackChangeDirection.Next;
 
-            BeatmapSetInfo? playableSet;
+            Live<BeatmapSetInfo>? playableSet;
 
             if (Shuffle.Value)
                 playableSet = getNextRandom(1, allowProtectedTracks);
             else
             {
-                playableSet = getBeatmapSets().AsEnumerable().SkipWhile(i => !i.Equals(current?.BeatmapSetInfo))
-                                              .Where(i => !i.Protected || allowProtectedTracks)
+                playableSet = getBeatmapSets().SkipWhile(i => !i.Value.Equals(current?.BeatmapSetInfo))
+                                              .Where(i => !i.Value.Protected || allowProtectedTracks)
                                               .ElementAtOrDefault(1)
-                              ?? getBeatmapSets().AsEnumerable().FirstOrDefault(i => !i.Protected || allowProtectedTracks);
+                              ?? getBeatmapSets().FirstOrDefault(i => !i.Value.Protected || allowProtectedTracks);
             }
 
-            var playableBeatmap = playableSet?.Beatmaps.FirstOrDefault();
+            var playableBeatmap = playableSet?.Value.Beatmaps.FirstOrDefault();
 
             if (playableBeatmap != null)
             {
@@ -369,11 +369,11 @@ namespace osu.Game.Overlays
             return false;
         }
 
-        private BeatmapSetInfo? getNextRandom(int direction, bool allowProtectedTracks)
+        private Live<BeatmapSetInfo>? getNextRandom(int direction, bool allowProtectedTracks)
         {
-            BeatmapSetInfo result;
+            Live<BeatmapSetInfo> result;
 
-            var possibleSets = getBeatmapSets().AsEnumerable().Where(s => !s.Protected || allowProtectedTracks).ToArray();
+            var possibleSets = getBeatmapSets().Where(s => !s.Value.Protected || allowProtectedTracks).ToArray();
 
             if (possibleSets.Length == 0)
                 return null;
@@ -432,7 +432,9 @@ namespace osu.Game.Overlays
 
         private TrackChangeDirection? queuedDirection;
 
-        private IQueryable<BeatmapSetInfo> getBeatmapSets() => realm.Realm.All<BeatmapSetInfo>().Where(s => !s.DeletePending);
+        private IEnumerable<Live<BeatmapSetInfo>> getBeatmapSets() => realm.Realm.All<BeatmapSetInfo>().Where(s => !s.DeletePending)
+                                                                           .AsEnumerable()
+                                                                           .Select(s => new RealmLive<BeatmapSetInfo>(s, realm));
 
         private void changeBeatmap(WorkingBeatmap newWorking)
         {
@@ -459,8 +461,8 @@ namespace osu.Game.Overlays
                 else
                 {
                     // figure out the best direction based on order in playlist.
-                    int last = getBeatmapSets().AsEnumerable().TakeWhile(b => !b.Equals(current.BeatmapSetInfo)).Count();
-                    int next = getBeatmapSets().AsEnumerable().TakeWhile(b => !b.Equals(newWorking.BeatmapSetInfo)).Count();
+                    int last = getBeatmapSets().TakeWhile(b => !b.Value.Equals(current.BeatmapSetInfo)).Count();
+                    int next = getBeatmapSets().TakeWhile(b => !b.Value.Equals(newWorking.BeatmapSetInfo)).Count();
 
                     direction = last > next ? TrackChangeDirection.Prev : TrackChangeDirection.Next;
                 }

osu.Game/Overlays/Settings/Sections/Maintenance/MassDeleteConfirmationDialog.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
 using osu.Game.Overlays.Dialog;
 
@@ -12,6 +13,7 @@ namespace osu.Game.Overlays.Settings.Sections.Maintenance
         public MassDeleteConfirmationDialog(Action deleteAction, LocalisableString deleteContent)
         {
             BodyText = deleteContent;
+            Icon = FontAwesome.Solid.Trash;
             DangerousAction = deleteAction;
         }
     }

osu.Game/Overlays/Settings/SettingsButton.cs

@@ -20,13 +20,13 @@ namespace osu.Game.Overlays.Settings
             Padding = new MarginPadding { Left = SettingsPanel.CONTENT_MARGINS, Right = SettingsPanel.CONTENT_MARGINS };
         }
 
-        public LocalisableString TooltipText { get; set; }
-
         public IEnumerable<string> Keywords { get; set; } = Array.Empty<string>();
 
         public BindableBool CanBeShown { get; } = new BindableBool(true);
         IBindable<bool> IConditionalFilterable.CanBeShown => CanBeShown;
 
+        public LocalisableString TooltipText { get; set; }
+
         public override IEnumerable<LocalisableString> FilterTerms
         {
             get

osu.Game/Overlays/Settings/SettingsSidebar.cs

@@ -66,7 +66,7 @@ namespace osu.Game.Overlays.Settings
             [BackgroundDependencyLoader]
             private void load()
             {
-                Size = new Vector2(SettingsSidebar.EXPANDED_WIDTH);
+                Size = new Vector2(EXPANDED_WIDTH);
 
                 Padding = new MarginPadding(40);
 

osu.Game/Rulesets/Difficulty/DifficultyAttributes.cs

@@ -26,6 +26,9 @@ namespace osu.Game.Rulesets.Difficulty
         protected const int ATTRIB_ID_FLASHLIGHT = 17;
         protected const int ATTRIB_ID_SLIDER_FACTOR = 19;
         protected const int ATTRIB_ID_SPEED_NOTE_COUNT = 21;
+        protected const int ATTRIB_ID_SPEED_DIFFICULT_STRAIN_COUNT = 23;
+        protected const int ATTRIB_ID_AIM_DIFFICULT_STRAIN_COUNT = 25;
+        protected const int ATTRIB_ID_OK_HIT_WINDOW = 27;
 
         /// <summary>
         /// The mods which were applied to the beatmap.

osu.Game/Rulesets/Edit/HitObjectComposer.cs

@@ -90,6 +90,9 @@ namespace osu.Game.Rulesets.Edit
         private Bindable<bool> autoSeekOnPlacement;
         private readonly Bindable<bool> composerFocusMode = new Bindable<bool>();
 
+        [CanBeNull]
+        private RadioButton lastTool;
+
         protected DrawableRuleset<TObject> DrawableRuleset { get; private set; }
 
         protected HitObjectComposer(Ruleset ruleset)
@@ -213,8 +216,7 @@ namespace osu.Game.Rulesets.Edit
                 },
             };
 
-            toolboxCollection.Items = CompositionTools
-                                      .Prepend(new SelectTool())
+            toolboxCollection.Items = (CompositionTools.Prepend(new SelectTool()))
                                       .Select(t => new HitObjectCompositionToolButton(t, () => toolSelected(t)))
                                       .ToList();
 
@@ -231,7 +233,7 @@ namespace osu.Game.Rulesets.Edit
 
             sampleBankTogglesCollection.AddRange(BlueprintContainer.SampleBankTernaryStates.Select(b => new DrawableTernaryButton(b)));
 
-            setSelectTool();
+            SetSelectTool();
 
             EditorBeatmap.SelectedHitObjects.CollectionChanged += selectionChanged;
         }
@@ -256,7 +258,7 @@ namespace osu.Game.Rulesets.Edit
             {
                 // it's important this is performed before the similar code in EditorRadioButton disables the button.
                 if (!timing.NewValue)
-                    setSelectTool();
+                    SetSelectTool();
             });
 
             EditorBeatmap.HasTiming.BindValueChanged(hasTiming =>
@@ -460,14 +462,18 @@ namespace osu.Game.Rulesets.Edit
             if (EditorBeatmap.SelectedHitObjects.Any())
             {
                 // ensure in selection mode if a selection is made.
-                setSelectTool();
+                SetSelectTool();
             }
         }
 
-        private void setSelectTool() => toolboxCollection.Items.First().Select();
+        public void SetSelectTool() => toolboxCollection.Items.First().Select();
+
+        public void SetLastTool() => (lastTool ?? toolboxCollection.Items.First()).Select();
 
         private void toolSelected(CompositionTool tool)
         {
+            lastTool = toolboxCollection.Items.OfType<HitObjectCompositionToolButton>().FirstOrDefault(i => i.Tool == BlueprintContainer.CurrentTool);
+
             BlueprintContainer.CurrentTool = tool;
 
             if (!(tool is SelectTool))

osu.Game/Rulesets/Edit/PlacementBlueprint.cs

@@ -71,6 +71,11 @@ namespace osu.Game.Rulesets.Edit
             PlacementActive = PlacementState.Finished;
         }
 
+        /// <summary>
+        /// Determines which objects to snap to for the snap result in <see cref="UpdateTimeAndPosition"/>.
+        /// </summary>
+        public virtual SnapType SnapType => SnapType.All;
+
         /// <summary>
         /// Updates the time and position of this <see cref="PlacementBlueprint"/> based on the provided snap information.
         /// </summary>

osu.Game/Rulesets/Ruleset.cs

@@ -8,6 +8,7 @@ using System.Linq;
 using osu.Framework.Extensions;
 using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
 using osu.Framework.IO.Stores;
@@ -30,6 +31,7 @@ using osu.Game.Screens.Edit.Setup;
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
 using osu.Game.Users;
+using osuTK;
 
 namespace osu.Game.Rulesets
 {
@@ -396,10 +398,28 @@ namespace osu.Game.Rulesets
         /// <summary>
         /// Can be overridden to add ruleset-specific sections to the editor beatmap setup screen.
         /// </summary>
-        public virtual IEnumerable<SetupSection> CreateEditorSetupSections() =>
+        public virtual IEnumerable<Drawable> CreateEditorSetupSections() =>
         [
+            new MetadataSection(),
             new DifficultySection(),
-            new ColoursSection(),
+            new FillFlowContainer
+            {
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(25),
+                Children = new Drawable[]
+                {
+                    new ResourcesSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    },
+                    new ColoursSection
+                    {
+                        RelativeSizeAxes = Axes.X,
+                    }
+                }
+            },
+            new DesignSection(),
         ];
 
         /// <summary>

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

@@ -297,7 +297,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         private void updatePlacementPosition()
         {
-            var snapResult = Composer.FindSnappedPositionAndTime(InputManager.CurrentState.Mouse.Position);
+            var snapResult = Composer.FindSnappedPositionAndTime(InputManager.CurrentState.Mouse.Position, CurrentPlacement.SnapType);
 
             // if no time was found from positional snapping, we should still quantize to the beat.
             snapResult.Time ??= Beatmap.SnapTime(EditorClock.CurrentTime, null);

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

@@ -150,13 +150,25 @@ namespace osu.Game.Screens.Edit.Compose.Components
             switch (e.Key)
             {
                 case Key.G:
-                    return CanReverse && reverseButton?.TriggerClick() == true;
+                    if (!CanReverse || reverseButton == null)
+                        return false;
+
+                    reverseButton.TriggerAction();
+                    return true;
 
                 case Key.Comma:
-                    return canRotate.Value && rotateCounterClockwiseButton?.TriggerClick() == true;
+                    if (!canRotate.Value || rotateCounterClockwiseButton == null)
+                        return false;
+
+                    rotateCounterClockwiseButton.TriggerAction();
+                    return true;
 
                 case Key.Period:
-                    return canRotate.Value && rotateClockwiseButton?.TriggerClick() == true;
+                    if (!canRotate.Value || rotateClockwiseButton == null)
+                        return false;
+
+                    rotateClockwiseButton.TriggerAction();
+                    return true;
             }
 
             return base.OnKeyDown(e);
@@ -285,7 +297,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
                 Action = action
             };
 
-            button.OperationStarted += freezeButtonPosition;
+            button.Clicked += freezeButtonPosition;
             button.HoverLost += unfreezeButtonPosition;
 
             button.OperationStarted += operationStarted;

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

@@ -21,6 +21,8 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         public Action? Action;
 
+        public event Action? Clicked;
+
         public event Action? HoverLost;
 
         public SelectionBoxButton(IconUsage iconUsage, string tooltip)
@@ -49,11 +51,10 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         protected override bool OnClick(ClickEvent e)
         {
-            Circle.FlashColour(Colours.GrayF, 300);
+            Clicked?.Invoke();
+
+            TriggerAction();
 
-            TriggerOperationStarted();
-            Action?.Invoke();
-            TriggerOperationEnded();
             return true;
         }
 
@@ -71,5 +72,14 @@ namespace osu.Game.Screens.Edit.Compose.Components
         }
 
         public LocalisableString TooltipText { get; }
+
+        public void TriggerAction()
+        {
+            Circle.FlashColour(Colours.GrayF, 300);
+
+            TriggerOperationStarted();
+            Action?.Invoke();
+            TriggerOperationEnded();
+        }
     }
 }

osu.Game/Screens/Edit/DeleteDifficultyConfirmationDialog.cs

@@ -7,7 +7,7 @@ using osu.Game.Overlays.Dialog;
 
 namespace osu.Game.Screens.Edit
 {
-    public partial class DeleteDifficultyConfirmationDialog : DangerousActionDialog
+    public partial class DeleteDifficultyConfirmationDialog : DeletionDialog
     {
         public DeleteDifficultyConfirmationDialog(BeatmapInfo beatmapInfo, Action deleteAction)
         {

osu.Game/Screens/Edit/Editor.cs

@@ -721,10 +721,16 @@ namespace osu.Game.Screens.Edit
             switch (e.Action)
             {
                 case GlobalAction.EditorSeekToPreviousHitObject:
+                    if (editorBeatmap.SelectedHitObjects.Any())
+                        return false;
+
                     seekHitObject(-1);
                     return true;
 
                 case GlobalAction.EditorSeekToNextHitObject:
+                    if (editorBeatmap.SelectedHitObjects.Any())
+                        return false;
+
                     seekHitObject(1);
                     return true;
 

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

@@ -6,6 +6,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
+using osu.Game.Skinning;
 
 namespace osu.Game.Screens.Edit.Setup
 {
@@ -13,23 +14,62 @@ namespace osu.Game.Screens.Edit.Setup
     {
         public override LocalisableString Title => EditorSetupStrings.ColoursHeader;
 
-        private LabelledColourPalette comboColours = null!;
+        private FormColourPalette comboColours = null!;
 
         [BackgroundDependencyLoader]
         private void load()
         {
             Children = new Drawable[]
             {
-                comboColours = new LabelledColourPalette
+                comboColours = new FormColourPalette
                 {
-                    Label = EditorSetupStrings.HitCircleSliderCombos,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    ColourNamePrefix = EditorSetupStrings.ComboColourPrefix
+                    Caption = EditorSetupStrings.HitCircleSliderCombos,
                 }
             };
+        }
 
+        private bool syncingColours;
+
+        protected override void LoadComplete()
+        {
             if (Beatmap.BeatmapSkin != null)
-                comboColours.Colours.BindTo(Beatmap.BeatmapSkin.ComboColours);
+                comboColours.Colours.AddRange(Beatmap.BeatmapSkin.ComboColours);
+
+            if (comboColours.Colours.Count == 0)
+            {
+                // compare ctor of `EditorBeatmapSkin`
+                for (int i = 0; i < SkinConfiguration.DefaultComboColours.Count; ++i)
+                    comboColours.Colours.Add(SkinConfiguration.DefaultComboColours[(i + 1) % SkinConfiguration.DefaultComboColours.Count]);
+            }
+
+            comboColours.Colours.BindCollectionChanged((_, _) =>
+            {
+                if (Beatmap.BeatmapSkin != null)
+                {
+                    if (syncingColours)
+                        return;
+
+                    syncingColours = true;
+
+                    Beatmap.BeatmapSkin.ComboColours.Clear();
+                    Beatmap.BeatmapSkin.ComboColours.AddRange(comboColours.Colours);
+
+                    syncingColours = false;
+                }
+            });
+
+            Beatmap.BeatmapSkin?.ComboColours.BindCollectionChanged((_, _) =>
+            {
+                if (syncingColours)
+                    return;
+
+                syncingColours = true;
+
+                comboColours.Colours.Clear();
+                comboColours.Colours.AddRange(Beatmap.BeatmapSkin?.ComboColours);
+
+                syncingColours = false;
+            });
         }
     }
 }

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

@@ -15,77 +15,77 @@ using osu.Game.Localisation;
 
 namespace osu.Game.Screens.Edit.Setup
 {
-    internal partial class DesignSection : SetupSection
+    public partial class DesignSection : SetupSection
     {
-        protected LabelledSwitchButton EnableCountdown = null!;
+        protected FormCheckBox EnableCountdown = null!;
 
         protected FillFlowContainer CountdownSettings = null!;
-        protected LabelledEnumDropdown<CountdownType> CountdownSpeed = null!;
-        protected LabelledNumberBox CountdownOffset = null!;
+        protected FormEnumDropdown<CountdownType> CountdownSpeed = null!;
+        protected FormNumberBox CountdownOffset = null!;
 
-        private LabelledSwitchButton widescreenSupport = null!;
-        private LabelledSwitchButton epilepsyWarning = null!;
-        private LabelledSwitchButton letterboxDuringBreaks = null!;
-        private LabelledSwitchButton samplesMatchPlaybackRate = null!;
+        private FormCheckBox widescreenSupport = null!;
+        private FormCheckBox epilepsyWarning = null!;
+        private FormCheckBox letterboxDuringBreaks = null!;
+        private FormCheckBox samplesMatchPlaybackRate = null!;
 
         public override LocalisableString Title => EditorSetupStrings.DesignHeader;
 
         [BackgroundDependencyLoader]
         private void load()
         {
-            Children = new[]
+            Children = new Drawable[]
             {
-                EnableCountdown = new LabelledSwitchButton
+                EnableCountdown = new FormCheckBox
                 {
-                    Label = EditorSetupStrings.EnableCountdown,
+                    Caption = EditorSetupStrings.EnableCountdown,
+                    HintText = EditorSetupStrings.CountdownDescription,
                     Current = { Value = Beatmap.BeatmapInfo.Countdown != CountdownType.None },
-                    Description = EditorSetupStrings.CountdownDescription
                 },
                 CountdownSettings = new FillFlowContainer
                 {
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
-                    Spacing = new Vector2(10),
+                    Spacing = new Vector2(5),
                     Direction = FillDirection.Vertical,
                     Children = new Drawable[]
                     {
-                        CountdownSpeed = new LabelledEnumDropdown<CountdownType>
+                        CountdownSpeed = new FormEnumDropdown<CountdownType>
                         {
-                            Label = EditorSetupStrings.CountdownSpeed,
+                            Caption = EditorSetupStrings.CountdownSpeed,
                             Current = { Value = Beatmap.BeatmapInfo.Countdown != CountdownType.None ? Beatmap.BeatmapInfo.Countdown : CountdownType.Normal },
                             Items = Enum.GetValues<CountdownType>().Where(type => type != CountdownType.None)
                         },
-                        CountdownOffset = new LabelledNumberBox
+                        CountdownOffset = new FormNumberBox
                         {
-                            Label = EditorSetupStrings.CountdownOffset,
+                            Caption = EditorSetupStrings.CountdownOffset,
+                            HintText = EditorSetupStrings.CountdownOffsetDescription,
                             Current = { Value = Beatmap.BeatmapInfo.CountdownOffset.ToString() },
-                            Description = EditorSetupStrings.CountdownOffsetDescription,
+                            TabbableContentContainer = this,
                         }
                     }
                 },
-                Empty(),
-                widescreenSupport = new LabelledSwitchButton
+                widescreenSupport = new FormCheckBox
                 {
-                    Label = EditorSetupStrings.WidescreenSupport,
-                    Description = EditorSetupStrings.WidescreenSupportDescription,
+                    Caption = EditorSetupStrings.WidescreenSupport,
+                    HintText = EditorSetupStrings.WidescreenSupportDescription,
                     Current = { Value = Beatmap.BeatmapInfo.WidescreenStoryboard }
                 },
-                epilepsyWarning = new LabelledSwitchButton
+                epilepsyWarning = new FormCheckBox
                 {
-                    Label = EditorSetupStrings.EpilepsyWarning,
-                    Description = EditorSetupStrings.EpilepsyWarningDescription,
+                    Caption = EditorSetupStrings.EpilepsyWarning,
+                    HintText = EditorSetupStrings.EpilepsyWarningDescription,
                     Current = { Value = Beatmap.BeatmapInfo.EpilepsyWarning }
                 },
-                letterboxDuringBreaks = new LabelledSwitchButton
+                letterboxDuringBreaks = new FormCheckBox
                 {
-                    Label = EditorSetupStrings.LetterboxDuringBreaks,
-                    Description = EditorSetupStrings.LetterboxDuringBreaksDescription,
+                    Caption = EditorSetupStrings.LetterboxDuringBreaks,
+                    HintText = EditorSetupStrings.LetterboxDuringBreaksDescription,
                     Current = { Value = Beatmap.BeatmapInfo.LetterboxInBreaks }
                 },
-                samplesMatchPlaybackRate = new LabelledSwitchButton
+                samplesMatchPlaybackRate = new FormCheckBox
                 {
-                    Label = EditorSetupStrings.SamplesMatchPlaybackRate,
-                    Description = EditorSetupStrings.SamplesMatchPlaybackRateDescription,
+                    Caption = EditorSetupStrings.SamplesMatchPlaybackRate,
+                    HintText = EditorSetupStrings.SamplesMatchPlaybackRateDescription,
                     Current = { Value = Beatmap.BeatmapInfo.SamplesMatchPlaybackRate }
                 }
             };

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

@@ -15,12 +15,12 @@ namespace osu.Game.Screens.Edit.Setup
 {
     public partial class DifficultySection : SetupSection
     {
-        private LabelledSliderBar<float> circleSizeSlider { get; set; } = null!;
-        private LabelledSliderBar<float> healthDrainSlider { get; set; } = null!;
-        private LabelledSliderBar<float> approachRateSlider { get; set; } = null!;
-        private LabelledSliderBar<float> overallDifficultySlider { get; set; } = null!;
-        private LabelledSliderBar<double> baseVelocitySlider { get; set; } = null!;
-        private LabelledSliderBar<double> tickRateSlider { get; set; } = null!;
+        private FormSliderBar<float> circleSizeSlider { get; set; } = null!;
+        private FormSliderBar<float> healthDrainSlider { get; set; } = null!;
+        private FormSliderBar<float> approachRateSlider { get; set; } = null!;
+        private FormSliderBar<float> overallDifficultySlider { get; set; } = null!;
+        private FormSliderBar<double> baseVelocitySlider { get; set; } = null!;
+        private FormSliderBar<double> tickRateSlider { get; set; } = null!;
 
         public override LocalisableString Title => EditorSetupStrings.DifficultyHeader;
 
@@ -29,90 +29,96 @@ namespace osu.Game.Screens.Edit.Setup
         {
             Children = new Drawable[]
             {
-                circleSizeSlider = new LabelledSliderBar<float>
+                circleSizeSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsCs,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.CircleSizeDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsCs,
+                    HintText = EditorSetupStrings.CircleSizeDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.CircleSize)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                healthDrainSlider = new LabelledSliderBar<float>
+                healthDrainSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsDrain,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.DrainRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsDrain,
+                    HintText = EditorSetupStrings.DrainRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.DrainRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                approachRateSlider = new LabelledSliderBar<float>
+                approachRateSlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAr,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.ApproachRateDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAr,
+                    HintText = EditorSetupStrings.ApproachRateDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.ApproachRate)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                overallDifficultySlider = new LabelledSliderBar<float>
+                overallDifficultySlider = new FormSliderBar<float>
                 {
-                    Label = BeatmapsetsStrings.ShowStatsAccuracy,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.OverallDifficultyDescription,
+                    Caption = BeatmapsetsStrings.ShowStatsAccuracy,
+                    HintText = EditorSetupStrings.OverallDifficultyDescription,
                     Current = new BindableFloat(Beatmap.Difficulty.OverallDifficulty)
                     {
                         Default = BeatmapDifficulty.DEFAULT_DIFFICULTY,
                         MinValue = 0,
                         MaxValue = 10,
                         Precision = 0.1f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                baseVelocitySlider = new LabelledSliderBar<double>
+                baseVelocitySlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.BaseVelocity,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.BaseVelocityDescription,
+                    Caption = EditorSetupStrings.BaseVelocity,
+                    HintText = EditorSetupStrings.BaseVelocityDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderMultiplier)
                     {
                         Default = 1.4,
                         MinValue = 0.4,
                         MaxValue = 3.6,
                         Precision = 0.01f,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
-                tickRateSlider = new LabelledSliderBar<double>
+                tickRateSlider = new FormSliderBar<double>
                 {
-                    Label = EditorSetupStrings.TickRate,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    Description = EditorSetupStrings.TickRateDescription,
+                    Caption = EditorSetupStrings.TickRate,
+                    HintText = EditorSetupStrings.TickRateDescription,
                     Current = new BindableDouble(Beatmap.Difficulty.SliderTickRate)
                     {
                         Default = 1,
                         MinValue = 1,
                         MaxValue = 4,
                         Precision = 1,
-                    }
+                    },
+                    TransferValueOnCommit = true,
+                    TabbableContentContainer = this,
                 },
             };
 
-            foreach (var item in Children.OfType<LabelledSliderBar<float>>())
+            foreach (var item in Children.OfType<FormSliderBar<float>>())
                 item.Current.ValueChanged += _ => updateValues();
 
-            foreach (var item in Children.OfType<LabelledSliderBar<double>>())
+            foreach (var item in Children.OfType<FormSliderBar<double>>())
                 item.Current.ValueChanged += _ => updateValues();
         }
 

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

@@ -1,22 +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.Game.Beatmaps;
-using osu.Game.Graphics.UserInterface;
-using osu.Game.Graphics.UserInterfaceV2;
-
-namespace osu.Game.Screens.Edit.Setup
-{
-    internal partial class LabelledRomanisedTextBox : LabelledTextBox
-    {
-        protected override OsuTextBox CreateTextBox() => new RomanisedTextBox();
-
-        private partial class RomanisedTextBox : OsuTextBox
-        {
-            protected override bool AllowIme => false;
-
-            protected override bool CanAddCharacter(char character)
-                => MetadataUtils.IsRomanised(character);
-        }
-    }
-}

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

@@ -14,16 +14,16 @@ namespace osu.Game.Screens.Edit.Setup
 {
     public partial class MetadataSection : SetupSection
     {
-        protected LabelledTextBox ArtistTextBox = null!;
-        protected LabelledTextBox RomanisedArtistTextBox = null!;
+        protected FormTextBox ArtistTextBox = null!;
+        protected FormTextBox RomanisedArtistTextBox = null!;
 
-        protected LabelledTextBox TitleTextBox = null!;
-        protected LabelledTextBox RomanisedTitleTextBox = null!;
+        protected FormTextBox TitleTextBox = null!;
+        protected FormTextBox RomanisedTitleTextBox = null!;
 
-        private LabelledTextBox creatorTextBox = null!;
-        private LabelledTextBox difficultyTextBox = null!;
-        private LabelledTextBox sourceTextBox = null!;
-        private LabelledTextBox tagsTextBox = null!;
+        private FormTextBox creatorTextBox = null!;
+        private FormTextBox difficultyTextBox = null!;
+        private FormTextBox sourceTextBox = null!;
+        private FormTextBox tagsTextBox = null!;
 
         public override LocalisableString Title => EditorSetupStrings.MetadataHeader;
 
@@ -34,33 +34,26 @@ namespace osu.Game.Screens.Edit.Setup
 
             Children = new[]
             {
-                ArtistTextBox = createTextBox<LabelledTextBox>(EditorSetupStrings.Artist,
+                ArtistTextBox = createTextBox<FormTextBox>(EditorSetupStrings.Artist,
                     !string.IsNullOrEmpty(metadata.ArtistUnicode) ? metadata.ArtistUnicode : metadata.Artist),
-                RomanisedArtistTextBox = createTextBox<LabelledRomanisedTextBox>(EditorSetupStrings.RomanisedArtist,
+                RomanisedArtistTextBox = createTextBox<FormRomanisedTextBox>(EditorSetupStrings.RomanisedArtist,
                     !string.IsNullOrEmpty(metadata.Artist) ? metadata.Artist : MetadataUtils.StripNonRomanisedCharacters(metadata.ArtistUnicode)),
-
-                Empty(),
-
-                TitleTextBox = createTextBox<LabelledTextBox>(EditorSetupStrings.Title,
+                TitleTextBox = createTextBox<FormTextBox>(EditorSetupStrings.Title,
                     !string.IsNullOrEmpty(metadata.TitleUnicode) ? metadata.TitleUnicode : metadata.Title),
-                RomanisedTitleTextBox = createTextBox<LabelledRomanisedTextBox>(EditorSetupStrings.RomanisedTitle,
+                RomanisedTitleTextBox = createTextBox<FormRomanisedTextBox>(EditorSetupStrings.RomanisedTitle,
                     !string.IsNullOrEmpty(metadata.Title) ? metadata.Title : MetadataUtils.StripNonRomanisedCharacters(metadata.ArtistUnicode)),
-
-                Empty(),
-
-                creatorTextBox = createTextBox<LabelledTextBox>(EditorSetupStrings.Creator, metadata.Author.Username),
-                difficultyTextBox = createTextBox<LabelledTextBox>(EditorSetupStrings.DifficultyName, Beatmap.BeatmapInfo.DifficultyName),
-                sourceTextBox = createTextBox<LabelledTextBox>(BeatmapsetsStrings.ShowInfoSource, metadata.Source),
-                tagsTextBox = createTextBox<LabelledTextBox>(BeatmapsetsStrings.ShowInfoTags, metadata.Tags)
+                creatorTextBox = createTextBox<FormTextBox>(EditorSetupStrings.Creator, metadata.Author.Username),
+                difficultyTextBox = createTextBox<FormTextBox>(EditorSetupStrings.DifficultyName, Beatmap.BeatmapInfo.DifficultyName),
+                sourceTextBox = createTextBox<FormTextBox>(BeatmapsetsStrings.ShowInfoSource, metadata.Source),
+                tagsTextBox = createTextBox<FormTextBox>(BeatmapsetsStrings.ShowInfoTags, metadata.Tags)
             };
         }
 
         private TTextBox createTextBox<TTextBox>(LocalisableString label, string initialValue)
-            where TTextBox : LabelledTextBox, new()
+            where TTextBox : FormTextBox, new()
             => new TTextBox
             {
-                Label = label,
-                FixedLabelWidth = LABEL_WIDTH,
+                Caption = label,
                 Current = { Value = initialValue },
                 TabbableContentContainer = this
             };
@@ -75,13 +68,13 @@ namespace osu.Game.Screens.Edit.Setup
             ArtistTextBox.Current.BindValueChanged(artist => transferIfRomanised(artist.NewValue, RomanisedArtistTextBox));
             TitleTextBox.Current.BindValueChanged(title => transferIfRomanised(title.NewValue, RomanisedTitleTextBox));
 
-            foreach (var item in Children.OfType<LabelledTextBox>())
+            foreach (var item in Children.OfType<FormTextBox>())
                 item.OnCommit += onCommit;
 
             updateReadOnlyState();
         }
 
-        private void transferIfRomanised(string value, LabelledTextBox target)
+        private void transferIfRomanised(string value, FormTextBox target)
         {
             if (MetadataUtils.IsRomanised(value))
                 target.Current.Value = value;
@@ -119,5 +112,18 @@ namespace osu.Game.Screens.Edit.Setup
 
             Beatmap.SaveState();
         }
+
+        private partial class FormRomanisedTextBox : FormTextBox
+        {
+            internal override InnerTextBox CreateTextBox() => new RomanisedTextBox();
+
+            private partial class RomanisedTextBox : InnerTextBox
+            {
+                protected override bool AllowIme => false;
+
+                protected override bool CanAddCharacter(char character)
+                    => MetadataUtils.IsRomanised(character);
+            }
+        }
     }
 }

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

@@ -7,15 +7,16 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Localisation;
 using osu.Game.Beatmaps;
+using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
 using osu.Game.Localisation;
 
 namespace osu.Game.Screens.Edit.Setup
 {
-    internal partial class ResourcesSection : SetupSection
+    public partial class ResourcesSection : SetupSection
     {
-        private LabelledFileChooser audioTrackChooser = null!;
-        private LabelledFileChooser backgroundChooser = null!;
+        private FormFileSelector audioTrackChooser = null!;
+        private FormFileSelector backgroundChooser = null!;
 
         public override LocalisableString Title => EditorSetupStrings.ResourcesHeader;
 
@@ -34,28 +35,33 @@ namespace osu.Game.Screens.Edit.Setup
         [Resolved]
         private Editor? editor { get; set; }
 
-        [Resolved]
-        private SetupScreenHeader header { get; set; } = null!;
+        private SetupScreenHeaderBackground headerBackground = null!;
 
         [BackgroundDependencyLoader]
         private void load()
         {
+            headerBackground = new SetupScreenHeaderBackground
+            {
+                RelativeSizeAxes = Axes.X,
+                Height = 110,
+            };
+
             Children = new Drawable[]
             {
-                backgroundChooser = new LabelledFileChooser(".jpg", ".jpeg", ".png")
+                backgroundChooser = new FormFileSelector(".jpg", ".jpeg", ".png")
                 {
-                    Label = GameplaySettingsStrings.BackgroundHeader,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    TabbableContentContainer = this
+                    Caption = GameplaySettingsStrings.BackgroundHeader,
+                    PlaceholderText = EditorSetupStrings.ClickToSelectBackground,
                 },
-                audioTrackChooser = new LabelledFileChooser(".mp3", ".ogg")
+                audioTrackChooser = new FormFileSelector(".mp3", ".ogg")
                 {
-                    Label = EditorSetupStrings.AudioTrack,
-                    FixedLabelWidth = LABEL_WIDTH,
-                    TabbableContentContainer = this
+                    Caption = EditorSetupStrings.AudioTrack,
+                    PlaceholderText = EditorSetupStrings.ClickToSelectTrack,
                 },
             };
 
+            backgroundChooser.PreviewContainer.Add(headerBackground);
+
             if (!string.IsNullOrEmpty(working.Value.Metadata.BackgroundFile))
                 backgroundChooser.Current.Value = new FileInfo(working.Value.Metadata.BackgroundFile);
 
@@ -64,8 +70,6 @@ namespace osu.Game.Screens.Edit.Setup
 
             backgroundChooser.Current.BindValueChanged(backgroundChanged);
             audioTrackChooser.Current.BindValueChanged(audioTrackChanged);
-
-            updatePlaceholderText();
         }
 
         public bool ChangeBackgroundImage(FileInfo source)
@@ -92,7 +96,7 @@ namespace osu.Game.Screens.Edit.Setup
             editorBeatmap.SaveState();
 
             working.Value.Metadata.BackgroundFile = destination.Name;
-            header.Background.UpdateBackground();
+            headerBackground.UpdateBackground();
 
             editor?.ApplyToBackground(bg => bg.RefreshBackground());
 
@@ -132,22 +136,12 @@ namespace osu.Game.Screens.Edit.Setup
         {
             if (file.NewValue == null || !ChangeBackgroundImage(file.NewValue))
                 backgroundChooser.Current.Value = file.OldValue;
-
-            updatePlaceholderText();
         }
 
         private void audioTrackChanged(ValueChangedEvent<FileInfo?> file)
         {
             if (file.NewValue == null || !ChangeAudioTrack(file.NewValue))
                 audioTrackChooser.Current.Value = file.OldValue;
-
-            updatePlaceholderText();
-        }
-
-        private void updatePlaceholderText()
-        {
-            audioTrackChooser.Text = audioTrackChooser.Current.Value?.Name ?? EditorSetupStrings.ClickToSelectTrack;
-            backgroundChooser.Text = backgroundChooser.Current.Value?.Name ?? EditorSetupStrings.ClickToSelectBackground;
         }
     }
 }

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

@@ -1,55 +1,81 @@
 // 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 osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Screens;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
+using osuTK;
 
 namespace osu.Game.Screens.Edit.Setup
 {
     public partial class SetupScreen : EditorScreen
     {
-        [Cached]
-        private SectionsContainer<SetupSection> sections { get; } = new SetupScreenSectionsContainer();
-
-        [Cached]
-        private SetupScreenHeader header = new SetupScreenHeader();
+        public const float COLUMN_WIDTH = 450;
+        public const float SPACING = 28;
+        public const float MAX_WIDTH = 2 * COLUMN_WIDTH + SPACING;
 
         public SetupScreen()
             : base(EditorScreenMode.SongSetup)
         {
         }
 
+        private OsuScrollContainer scroll = null!;
+        private FillFlowContainer flow = null!;
+
         [BackgroundDependencyLoader]
         private void load(EditorBeatmap beatmap, OverlayColourProvider colourProvider)
         {
             var ruleset = beatmap.BeatmapInfo.Ruleset.CreateInstance();
 
-            List<SetupSection> sectionsEnumerable =
-            [
-                new ResourcesSection(),
-                new MetadataSection()
-            ];
-
-            sectionsEnumerable.AddRange(ruleset.CreateEditorSetupSections());
-            sectionsEnumerable.Add(new DesignSection());
-
-            Add(new Box
+            Children = new Drawable[]
             {
-                Colour = colourProvider.Background3,
-                RelativeSizeAxes = Axes.Both,
-            });
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = colourProvider.Background3,
+                },
+                scroll = new OsuScrollContainer
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Padding = new MarginPadding(15),
+                    Child = flow = new FillFlowContainer
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        AutoSizeAxes = Axes.Y,
+                        Direction = FillDirection.Full,
+                        Anchor = Anchor.TopCentre,
+                        Origin = Anchor.TopCentre,
+                        Spacing = new Vector2(25),
+                        ChildrenEnumerable = ruleset.CreateEditorSetupSections().Select(section => section.With(s =>
+                        {
+                            s.Width = 450;
+                            s.Anchor = Anchor.TopCentre;
+                            s.Origin = Anchor.TopCentre;
+                        })),
+                    }
+                }
+            };
+        }
 
-            Add(sections.With(s =>
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            if (scroll.DrawWidth > MAX_WIDTH)
             {
-                s.RelativeSizeAxes = Axes.Both;
-                s.ChildrenEnumerable = sectionsEnumerable;
-                s.FixedHeader = header;
-            }));
+                flow.RelativeSizeAxes = Axes.None;
+                flow.Width = MAX_WIDTH;
+            }
+            else
+            {
+                flow.RelativeSizeAxes = Axes.X;
+                flow.Width = 1;
+            }
         }
 
         public override void OnExiting(ScreenExitEvent e)
@@ -62,19 +88,5 @@ namespace osu.Game.Screens.Edit.Setup
             // (and potentially block the exit procedure for save).
             GetContainingFocusManager()?.TriggerFocusContention(this);
         }
-
-        private partial class SetupScreenSectionsContainer : SectionsContainer<SetupSection>
-        {
-            protected override UserTrackingScrollContainer CreateScrollContainer()
-            {
-                var scrollContainer = base.CreateScrollContainer();
-
-                // Workaround for masking issues (see https://github.com/ppy/osu-framework/issues/1675#issuecomment-910023157)
-                // Note that this actually causes the full scroll range to be reduced by 2px at the bottom, but it's not really noticeable.
-                scrollContainer.Margin = new MarginPadding { Top = 2 };
-
-                return scrollContainer;
-            }
-        }
     }
 }