Merge branch 'master' into lazer-speedkeys

osu.Android.props

@@ -10,7 +10,7 @@
     <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.329.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2024.523.0" />
   </ItemGroup>
   <PropertyGroup>
     <!-- Fody does not handle Android build well, and warns when unchanged.

osu.Android/AndroidJoystickSettings.cs

@@ -1,76 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Framework.Allocation;
-using osu.Framework.Android.Input;
-using osu.Framework.Bindables;
-using osu.Framework.Graphics;
-using osu.Framework.Localisation;
-using osu.Game.Localisation;
-using osu.Game.Overlays.Settings;
-
-namespace osu.Android
-{
-    public partial class AndroidJoystickSettings : SettingsSubsection
-    {
-        protected override LocalisableString Header => JoystickSettingsStrings.JoystickGamepad;
-
-        private readonly AndroidJoystickHandler joystickHandler;
-
-        private readonly Bindable<bool> enabled = new BindableBool(true);
-
-        private SettingsSlider<float> deadzoneSlider = null!;
-
-        private Bindable<float> handlerDeadzone = null!;
-
-        private Bindable<float> localDeadzone = null!;
-
-        public AndroidJoystickSettings(AndroidJoystickHandler joystickHandler)
-        {
-            this.joystickHandler = joystickHandler;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load()
-        {
-            // use local bindable to avoid changing enabled state of game host's bindable.
-            handlerDeadzone = joystickHandler.DeadzoneThreshold.GetBoundCopy();
-            localDeadzone = handlerDeadzone.GetUnboundCopy();
-
-            Children = new Drawable[]
-            {
-                new SettingsCheckbox
-                {
-                    LabelText = CommonStrings.Enabled,
-                    Current = enabled
-                },
-                deadzoneSlider = new SettingsSlider<float>
-                {
-                    LabelText = JoystickSettingsStrings.DeadzoneThreshold,
-                    KeyboardStep = 0.01f,
-                    DisplayAsPercentage = true,
-                    Current = localDeadzone,
-                },
-            };
-        }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            enabled.BindTo(joystickHandler.Enabled);
-            enabled.BindValueChanged(e => deadzoneSlider.Current.Disabled = !e.NewValue, true);
-
-            handlerDeadzone.BindValueChanged(val =>
-            {
-                bool disabled = localDeadzone.Disabled;
-
-                localDeadzone.Disabled = false;
-                localDeadzone.Value = val.NewValue;
-                localDeadzone.Disabled = disabled;
-            }, true);
-
-            localDeadzone.BindValueChanged(val => handlerDeadzone.Value = val.NewValue);
-        }
-    }
-}

osu.Android/AndroidMouseSettings.cs

@@ -1,97 +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 Android.OS;
-using osu.Framework.Allocation;
-using osu.Framework.Android.Input;
-using osu.Framework.Bindables;
-using osu.Framework.Graphics;
-using osu.Framework.Localisation;
-using osu.Game.Configuration;
-using osu.Game.Localisation;
-using osu.Game.Overlays.Settings;
-using osu.Game.Overlays.Settings.Sections.Input;
-
-namespace osu.Android
-{
-    public partial class AndroidMouseSettings : SettingsSubsection
-    {
-        private readonly AndroidMouseHandler mouseHandler;
-
-        protected override LocalisableString Header => MouseSettingsStrings.Mouse;
-
-        private Bindable<double> handlerSensitivity = null!;
-
-        private Bindable<double> localSensitivity = null!;
-
-        private Bindable<bool> relativeMode = null!;
-
-        public AndroidMouseSettings(AndroidMouseHandler mouseHandler)
-        {
-            this.mouseHandler = mouseHandler;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuConfigManager osuConfig)
-        {
-            // use local bindable to avoid changing enabled state of game host's bindable.
-            handlerSensitivity = mouseHandler.Sensitivity.GetBoundCopy();
-            localSensitivity = handlerSensitivity.GetUnboundCopy();
-
-            relativeMode = mouseHandler.UseRelativeMode.GetBoundCopy();
-
-            // High precision/pointer capture is only available on Android 8.0 and up
-            if (Build.VERSION.SdkInt >= BuildVersionCodes.O)
-            {
-                AddRange(new Drawable[]
-                {
-                    new SettingsCheckbox
-                    {
-                        LabelText = MouseSettingsStrings.HighPrecisionMouse,
-                        TooltipText = MouseSettingsStrings.HighPrecisionMouseTooltip,
-                        Current = relativeMode,
-                        Keywords = new[] { @"raw", @"input", @"relative", @"cursor", @"captured", @"pointer" },
-                    },
-                    new MouseSettings.SensitivitySetting
-                    {
-                        LabelText = MouseSettingsStrings.CursorSensitivity,
-                        Current = localSensitivity,
-                    },
-                });
-            }
-
-            AddRange(new Drawable[]
-            {
-                new SettingsCheckbox
-                {
-                    LabelText = MouseSettingsStrings.DisableMouseWheelVolumeAdjust,
-                    TooltipText = MouseSettingsStrings.DisableMouseWheelVolumeAdjustTooltip,
-                    Current = osuConfig.GetBindable<bool>(OsuSetting.MouseDisableWheel),
-                },
-                new SettingsCheckbox
-                {
-                    LabelText = MouseSettingsStrings.DisableClicksDuringGameplay,
-                    Current = osuConfig.GetBindable<bool>(OsuSetting.MouseDisableButtons),
-                },
-            });
-        }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            relativeMode.BindValueChanged(relative => localSensitivity.Disabled = !relative.NewValue, true);
-
-            handlerSensitivity.BindValueChanged(val =>
-            {
-                bool disabled = localSensitivity.Disabled;
-
-                localSensitivity.Disabled = false;
-                localSensitivity.Value = val.NewValue;
-                localSensitivity.Disabled = disabled;
-            }, true);
-
-            localSensitivity.BindValueChanged(val => handlerSensitivity.Value = val.NewValue);
-        }
-    }
-}

osu.Android/OsuGameAndroid.cs

@@ -5,13 +5,9 @@ using System;
 using Android.App;
 using Microsoft.Maui.Devices;
 using osu.Framework.Allocation;
-using osu.Framework.Android.Input;
 using osu.Framework.Extensions.ObjectExtensions;
-using osu.Framework.Input.Handlers;
 using osu.Framework.Platform;
 using osu.Game;
-using osu.Game.Overlays.Settings;
-using osu.Game.Overlays.Settings.Sections.Input;
 using osu.Game.Updater;
 using osu.Game.Utils;
 
@@ -88,24 +84,6 @@ namespace osu.Android
 
         protected override BatteryInfo CreateBatteryInfo() => new AndroidBatteryInfo();
 
-        public override SettingsSubsection CreateSettingsSubsectionFor(InputHandler handler)
-        {
-            switch (handler)
-            {
-                case AndroidMouseHandler mh:
-                    return new AndroidMouseSettings(mh);
-
-                case AndroidJoystickHandler jh:
-                    return new AndroidJoystickSettings(jh);
-
-                case AndroidTouchHandler th:
-                    return new TouchSettings(th);
-
-                default:
-                    return base.CreateSettingsSubsectionFor(handler);
-            }
-        }
-
         private class AndroidBatteryInfo : BatteryInfo
         {
             public override double? ChargeLevel => Battery.ChargeLevel;

osu.Desktop/OsuGameDesktop.cs

@@ -22,7 +22,6 @@ using osu.Game.IPC;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Performance;
 using osu.Game.Utils;
-using SDL2;
 
 namespace osu.Desktop
 {
@@ -161,7 +160,7 @@ namespace osu.Desktop
             host.Window.Title = Name;
         }
 
-        protected override BatteryInfo CreateBatteryInfo() => new SDL2BatteryInfo();
+        protected override BatteryInfo CreateBatteryInfo() => FrameworkEnvironment.UseSDL3 ? new SDL3BatteryInfo() : new SDL2BatteryInfo();
 
         protected override void Dispose(bool isDisposing)
         {
@@ -169,23 +168,5 @@ namespace osu.Desktop
             osuSchemeLinkIPCChannel?.Dispose();
             archiveImportIPCChannel?.Dispose();
         }
-
-        private class SDL2BatteryInfo : BatteryInfo
-        {
-            public override double? ChargeLevel
-            {
-                get
-                {
-                    SDL.SDL_GetPowerInfo(out _, out int percentage);
-
-                    if (percentage == -1)
-                        return null;
-
-                    return percentage / 100.0;
-                }
-            }
-
-            public override bool OnBattery => SDL.SDL_GetPowerInfo(out _, out _) == SDL.SDL_PowerState.SDL_POWERSTATE_ON_BATTERY;
-        }
     }
 }

osu.Desktop/Program.cs

@@ -13,7 +13,7 @@ using osu.Framework.Platform;
 using osu.Game;
 using osu.Game.IPC;
 using osu.Game.Tournament;
-using SDL2;
+using SDL;
 using Squirrel;
 
 namespace osu.Desktop
@@ -52,16 +52,19 @@ namespace osu.Desktop
                 // See https://www.mongodb.com/docs/realm/sdk/dotnet/compatibility/
                 if (windowsVersion.Major < 6 || (windowsVersion.Major == 6 && windowsVersion.Minor <= 2))
                 {
-                    // If users running in compatibility mode becomes more of a common thing, we may want to provide better guidance or even consider
+                    unsafe
-                    // disabling it ourselves.
+                    {
-                    // We could also better detect compatibility mode if required:
+                        // If users running in compatibility mode becomes more of a common thing, we may want to provide better guidance or even consider
-                    // https://stackoverflow.com/questions/10744651/how-i-can-detect-if-my-application-is-running-under-compatibility-mode#comment58183249_10744730
+                        // disabling it ourselves.
-                    SDL.SDL_ShowSimpleMessageBox(SDL.SDL_MessageBoxFlags.SDL_MESSAGEBOX_ERROR,
+                        // We could also better detect compatibility mode if required:
-                        "Your operating system is too old to run osu!",
+                        // https://stackoverflow.com/questions/10744651/how-i-can-detect-if-my-application-is-running-under-compatibility-mode#comment58183249_10744730
-                        "This version of osu! requires at least Windows 8.1 to run.\n"
+                        SDL3.SDL_ShowSimpleMessageBox(SDL_MessageBoxFlags.SDL_MESSAGEBOX_ERROR,
-                        + "Please upgrade your operating system or consider using an older version of osu!.\n\n"
+                            "Your operating system is too old to run osu!"u8,
-                        + "If you are running a newer version of windows, please check you don't have \"Compatibility mode\" turned on for osu!", IntPtr.Zero);
+                            "This version of osu! requires at least Windows 8.1 to run.\n"u8
-                    return;
+                            + "Please upgrade your operating system or consider using an older version of osu!.\n\n"u8
+                            + "If you are running a newer version of windows, please check you don't have \"Compatibility mode\" turned on for osu!"u8, null);
+                        return;
+                    }
                 }
 
                 setupSquirrel();
@@ -104,7 +107,13 @@ namespace osu.Desktop
                 }
             }
 
-            using (DesktopGameHost host = Host.GetSuitableDesktopHost(gameName, new HostOptions { IPCPort = !tournamentClient ? OsuGame.IPC_PORT : null }))
+            var hostOptions = new HostOptions
+            {
+                IPCPort = !tournamentClient ? OsuGame.IPC_PORT : null,
+                FriendlyGameName = OsuGameBase.GAME_NAME,
+            };
+
+            using (DesktopGameHost host = Host.GetSuitableDesktopHost(gameName, hostOptions))
             {
                 if (!host.IsPrimaryInstance)
                 {

osu.Desktop/SDL2BatteryInfo.cs

@@ -0,0 +1,25 @@
+// 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.Utils;
+
+namespace osu.Desktop
+{
+    internal class SDL2BatteryInfo : BatteryInfo
+    {
+        public override double? ChargeLevel
+        {
+            get
+            {
+                SDL2.SDL.SDL_GetPowerInfo(out _, out int percentage);
+
+                if (percentage == -1)
+                    return null;
+
+                return percentage / 100.0;
+            }
+        }
+
+        public override bool OnBattery => SDL2.SDL.SDL_GetPowerInfo(out _, out _) == SDL2.SDL.SDL_PowerState.SDL_POWERSTATE_ON_BATTERY;
+    }
+}

osu.Desktop/SDL3BatteryInfo.cs

@@ -0,0 +1,27 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Utils;
+using SDL;
+
+namespace osu.Desktop
+{
+    internal unsafe class SDL3BatteryInfo : BatteryInfo
+    {
+        public override double? ChargeLevel
+        {
+            get
+            {
+                int percentage;
+                SDL3.SDL_GetPowerInfo(null, &percentage);
+
+                if (percentage == -1)
+                    return null;
+
+                return percentage / 100.0;
+            }
+        }
+
+        public override bool OnBattery => SDL3.SDL_GetPowerInfo(null, null) == SDL_PowerState.SDL_POWERSTATE_ON_BATTERY;
+    }
+}

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

@@ -78,7 +78,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         }
 
         // Generally all the control points are within the visible area all the time.
-        public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => true;
+        public override bool UpdateSubTreeMasking() => true;
 
         /// <summary>
         /// Handles correction of invalid path types.
@@ -435,10 +435,14 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
             var item = new TernaryStateRadioMenuItem(type?.Description ?? "Inherit", MenuItemType.Standard, _ =>
             {
+                changeHandler?.BeginChange();
+
                 foreach (var p in Pieces.Where(p => p.IsSelected.Value))
                     updatePathType(p, type);
 
                 EnsureValidPathTypes();
+
+                changeHandler?.EndChange();
             });
 
             if (countOfState == totalCount)

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

@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using osu.Framework.Allocation;
+using osu.Framework.Graphics;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Skinning.Default;
@@ -27,14 +28,16 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
         public SliderBodyPiece()
         {
-            InternalChild = body = new ManualSliderBody
+            AutoSizeAxes = Axes.Both;
-            {
-                AccentColour = Color4.Transparent
-            };
 
             // SliderSelectionBlueprint relies on calling ReceivePositionalInputAt on this drawable to determine whether selection should occur.
             // Without AlwaysPresent, a movement in a parent container (ie. the editor composer area resizing) could cause incorrect input handling.
             AlwaysPresent = true;
+
+            InternalChild = body = new ManualSliderBody
+            {
+                AccentColour = Color4.Transparent
+            };
         }
 
         [BackgroundDependencyLoader]
@@ -61,7 +64,6 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                 body.SetVertices(vertices);
             }
 
-            Size = body.Size;
             OriginPosition = body.PathOffset;
         }
 

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

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.UserInterface;
@@ -25,33 +24,17 @@ namespace osu.Game.Rulesets.Osu.Edit
 {
     public partial class OsuSelectionHandler : EditorSelectionHandler
     {
-        [Resolved(CanBeNull = true)]
-        private IDistanceSnapProvider? snapProvider { get; set; }
-
-        /// <summary>
-        /// During a transform, the initial path types of a single selected slider are stored so they
-        /// can be maintained throughout the operation.
-        /// </summary>
-        private List<PathType?>? referencePathTypes;
-
         protected override void OnSelectionChanged()
         {
             base.OnSelectionChanged();
 
             Quad quad = selectedMovableObjects.Length > 0 ? GeometryUtils.GetSurroundingQuad(selectedMovableObjects) : new Quad();
 
-            SelectionBox.CanFlipX = SelectionBox.CanScaleX = quad.Width > 0;
+            SelectionBox.CanFlipX = quad.Width > 0;
-            SelectionBox.CanFlipY = SelectionBox.CanScaleY = quad.Height > 0;
+            SelectionBox.CanFlipY = quad.Height > 0;
-            SelectionBox.CanScaleDiagonally = SelectionBox.CanScaleX && SelectionBox.CanScaleY;
             SelectionBox.CanReverse = EditorBeatmap.SelectedHitObjects.Count > 1 || EditorBeatmap.SelectedHitObjects.Any(s => s is Slider);
         }
 
-        protected override void OnOperationEnded()
-        {
-            base.OnOperationEnded();
-            referencePathTypes = null;
-        }
-
         protected override bool OnKeyDown(KeyDownEvent e)
         {
             if (e.Key == Key.M && e.ControlPressed && e.ShiftPressed)
@@ -149,96 +132,9 @@ namespace osu.Game.Rulesets.Osu.Edit
             return didFlip;
         }
 
-        public override bool HandleScale(Vector2 scale, Anchor reference)
-        {
-            adjustScaleFromAnchor(ref scale, reference);
-
-            var hitObjects = selectedMovableObjects;
-
-            // for the time being, allow resizing of slider paths only if the slider is
-            // the only hit object selected. with a group selection, it's likely the user
-            // is not looking to change the duration of the slider but expand the whole pattern.
-            if (hitObjects.Length == 1 && hitObjects.First() is Slider slider)
-                scaleSlider(slider, scale);
-            else
-                scaleHitObjects(hitObjects, reference, scale);
-
-            moveSelectionInBounds();
-            return true;
-        }
-
-        private static void adjustScaleFromAnchor(ref Vector2 scale, Anchor reference)
-        {
-            // cancel out scale in axes we don't care about (based on which drag handle was used).
-            if ((reference & Anchor.x1) > 0) scale.X = 0;
-            if ((reference & Anchor.y1) > 0) scale.Y = 0;
-
-            // reverse the scale direction if dragging from top or left.
-            if ((reference & Anchor.x0) > 0) scale.X = -scale.X;
-            if ((reference & Anchor.y0) > 0) scale.Y = -scale.Y;
-        }
-
         public override SelectionRotationHandler CreateRotationHandler() => new OsuSelectionRotationHandler();
 
-        private void scaleSlider(Slider slider, Vector2 scale)
+        public override SelectionScaleHandler CreateScaleHandler() => new OsuSelectionScaleHandler();
-        {
-            referencePathTypes ??= slider.Path.ControlPoints.Select(p => p.Type).ToList();
-
-            Quad sliderQuad = GeometryUtils.GetSurroundingQuad(slider.Path.ControlPoints.Select(p => p.Position));
-
-            // Limit minimum distance between control points after scaling to almost 0. Less than 0 causes the slider to flip, exactly 0 causes a crash through division by 0.
-            scale = Vector2.ComponentMax(new Vector2(Precision.FLOAT_EPSILON), sliderQuad.Size + scale) - sliderQuad.Size;
-
-            Vector2 pathRelativeDeltaScale = new Vector2(
-                sliderQuad.Width == 0 ? 0 : 1 + scale.X / sliderQuad.Width,
-                sliderQuad.Height == 0 ? 0 : 1 + scale.Y / sliderQuad.Height);
-
-            Queue<Vector2> oldControlPoints = new Queue<Vector2>();
-
-            foreach (var point in slider.Path.ControlPoints)
-            {
-                oldControlPoints.Enqueue(point.Position);
-                point.Position *= pathRelativeDeltaScale;
-            }
-
-            // Maintain the path types in case they were defaulted to bezier at some point during scaling
-            for (int i = 0; i < slider.Path.ControlPoints.Count; ++i)
-                slider.Path.ControlPoints[i].Type = referencePathTypes[i];
-
-            // Snap the slider's length to the current beat divisor
-            // to calculate the final resulting duration / bounding box before the final checks.
-            slider.SnapTo(snapProvider);
-
-            //if sliderhead or sliderend end up outside playfield, revert scaling.
-            Quad scaledQuad = GeometryUtils.GetSurroundingQuad(new OsuHitObject[] { slider });
-            (bool xInBounds, bool yInBounds) = isQuadInBounds(scaledQuad);
-
-            if (xInBounds && yInBounds && slider.Path.HasValidLength)
-                return;
-
-            foreach (var point in slider.Path.ControlPoints)
-                point.Position = oldControlPoints.Dequeue();
-
-            // Snap the slider's length again to undo the potentially-invalid length applied by the previous snap.
-            slider.SnapTo(snapProvider);
-        }
-
-        private void scaleHitObjects(OsuHitObject[] hitObjects, Anchor reference, Vector2 scale)
-        {
-            scale = getClampedScale(hitObjects, reference, scale);
-            Quad selectionQuad = GeometryUtils.GetSurroundingQuad(hitObjects);
-
-            foreach (var h in hitObjects)
-                h.Position = GeometryUtils.GetScaledPosition(reference, scale, selectionQuad, h.Position);
-        }
-
-        private (bool X, bool Y) isQuadInBounds(Quad quad)
-        {
-            bool xInBounds = (quad.TopLeft.X >= 0) && (quad.BottomRight.X <= DrawWidth);
-            bool yInBounds = (quad.TopLeft.Y >= 0) && (quad.BottomRight.Y <= DrawHeight);
-
-            return (xInBounds, yInBounds);
-        }
 
         private void moveSelectionInBounds()
         {
@@ -262,43 +158,6 @@ namespace osu.Game.Rulesets.Osu.Edit
                 h.Position += delta;
         }
 
-        /// <summary>
-        /// Clamp scale for multi-object-scaling where selection does not exceed playfield bounds or flip.
-        /// </summary>
-        /// <param name="hitObjects">The hitobjects to be scaled</param>
-        /// <param name="reference">The anchor from which the scale operation is performed</param>
-        /// <param name="scale">The scale to be clamped</param>
-        /// <returns>The clamped scale vector</returns>
-        private Vector2 getClampedScale(OsuHitObject[] hitObjects, Anchor reference, Vector2 scale)
-        {
-            float xOffset = ((reference & Anchor.x0) > 0) ? -scale.X : 0;
-            float yOffset = ((reference & Anchor.y0) > 0) ? -scale.Y : 0;
-
-            Quad selectionQuad = GeometryUtils.GetSurroundingQuad(hitObjects);
-
-            //todo: this is not always correct for selections involving sliders. This approximation assumes each point is scaled independently, but sliderends move with the sliderhead.
-            Quad scaledQuad = new Quad(selectionQuad.TopLeft.X + xOffset, selectionQuad.TopLeft.Y + yOffset, selectionQuad.Width + scale.X, selectionQuad.Height + scale.Y);
-
-            //max Size -> playfield bounds
-            if (scaledQuad.TopLeft.X < 0)
-                scale.X += scaledQuad.TopLeft.X;
-            if (scaledQuad.TopLeft.Y < 0)
-                scale.Y += scaledQuad.TopLeft.Y;
-
-            if (scaledQuad.BottomRight.X > DrawWidth)
-                scale.X -= scaledQuad.BottomRight.X - DrawWidth;
-            if (scaledQuad.BottomRight.Y > DrawHeight)
-                scale.Y -= scaledQuad.BottomRight.Y - DrawHeight;
-
-            //min Size -> almost 0. Less than 0 causes the quad to flip, exactly 0 causes scaling to get stuck at minimum scale.
-            Vector2 scaledSize = selectionQuad.Size + scale;
-            Vector2 minSize = new Vector2(Precision.FLOAT_EPSILON);
-
-            scale = Vector2.ComponentMax(minSize, scaledSize) - selectionQuad.Size;
-
-            return scale;
-        }
-
         /// <summary>
         /// All osu! hitobjects which can be moved/rotated/scaled.
         /// </summary>

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

@@ -0,0 +1,220 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Screens.Edit;
+using osu.Game.Screens.Edit.Compose.Components;
+using osu.Game.Utils;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Edit
+{
+    public partial class OsuSelectionScaleHandler : SelectionScaleHandler
+    {
+        [Resolved]
+        private IEditorChangeHandler? changeHandler { get; set; }
+
+        [Resolved(CanBeNull = true)]
+        private IDistanceSnapProvider? snapProvider { get; set; }
+
+        private BindableList<HitObject> selectedItems { get; } = new BindableList<HitObject>();
+
+        [BackgroundDependencyLoader]
+        private void load(EditorBeatmap editorBeatmap)
+        {
+            selectedItems.BindTo(editorBeatmap.SelectedHitObjects);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            selectedItems.CollectionChanged += (_, __) => updateState();
+            updateState();
+        }
+
+        private void updateState()
+        {
+            var quad = GeometryUtils.GetSurroundingQuad(selectedMovableObjects);
+
+            CanScaleX.Value = quad.Width > 0;
+            CanScaleY.Value = quad.Height > 0;
+            CanScaleDiagonally.Value = CanScaleX.Value && CanScaleY.Value;
+        }
+
+        private Dictionary<OsuHitObject, OriginalHitObjectState>? objectsInScale;
+        private Vector2? defaultOrigin;
+
+        public override void Begin()
+        {
+            if (objectsInScale != null)
+                throw new InvalidOperationException($"Cannot {nameof(Begin)} a scale operation while another is in progress!");
+
+            changeHandler?.BeginChange();
+
+            objectsInScale = selectedMovableObjects.ToDictionary(ho => ho, ho => new OriginalHitObjectState(ho));
+            OriginalSurroundingQuad = objectsInScale.Count == 1 && objectsInScale.First().Key is Slider slider
+                ? GeometryUtils.GetSurroundingQuad(slider.Path.ControlPoints.Select(p => p.Position))
+                : GeometryUtils.GetSurroundingQuad(objectsInScale.Keys);
+            defaultOrigin = OriginalSurroundingQuad.Value.Centre;
+        }
+
+        public override void Update(Vector2 scale, Vector2? origin = null, Axes adjustAxis = Axes.Both)
+        {
+            if (objectsInScale == null)
+                throw new InvalidOperationException($"Cannot {nameof(Update)} a scale operation without calling {nameof(Begin)} first!");
+
+            Debug.Assert(defaultOrigin != null && OriginalSurroundingQuad != null);
+
+            Vector2 actualOrigin = origin ?? defaultOrigin.Value;
+
+            // for the time being, allow resizing of slider paths only if the slider is
+            // the only hit object selected. with a group selection, it's likely the user
+            // is not looking to change the duration of the slider but expand the whole pattern.
+            if (objectsInScale.Count == 1 && objectsInScale.First().Key is Slider slider)
+            {
+                var originalInfo = objectsInScale[slider];
+                Debug.Assert(originalInfo.PathControlPointPositions != null && originalInfo.PathControlPointTypes != null);
+                scaleSlider(slider, scale, originalInfo.PathControlPointPositions, originalInfo.PathControlPointTypes);
+            }
+            else
+            {
+                scale = getClampedScale(OriginalSurroundingQuad.Value, actualOrigin, scale);
+
+                foreach (var (ho, originalState) in objectsInScale)
+                {
+                    ho.Position = GeometryUtils.GetScaledPosition(scale, actualOrigin, originalState.Position);
+                }
+            }
+
+            moveSelectionInBounds();
+        }
+
+        public override void Commit()
+        {
+            if (objectsInScale == null)
+                throw new InvalidOperationException($"Cannot {nameof(Commit)} a rotate operation without calling {nameof(Begin)} first!");
+
+            changeHandler?.EndChange();
+
+            objectsInScale = null;
+            OriginalSurroundingQuad = null;
+            defaultOrigin = null;
+        }
+
+        private IEnumerable<OsuHitObject> selectedMovableObjects => selectedItems.Cast<OsuHitObject>()
+                                                                                 .Where(h => h is not Spinner);
+
+        private void scaleSlider(Slider slider, Vector2 scale, Vector2[] originalPathPositions, PathType?[] originalPathTypes)
+        {
+            scale = Vector2.ComponentMax(scale, new Vector2(Precision.FLOAT_EPSILON));
+
+            // Maintain the path types in case they were defaulted to bezier at some point during scaling
+            for (int i = 0; i < slider.Path.ControlPoints.Count; i++)
+            {
+                slider.Path.ControlPoints[i].Position = originalPathPositions[i] * scale;
+                slider.Path.ControlPoints[i].Type = originalPathTypes[i];
+            }
+
+            // Snap the slider's length to the current beat divisor
+            // to calculate the final resulting duration / bounding box before the final checks.
+            slider.SnapTo(snapProvider);
+
+            //if sliderhead or sliderend end up outside playfield, revert scaling.
+            Quad scaledQuad = GeometryUtils.GetSurroundingQuad(new OsuHitObject[] { slider });
+            (bool xInBounds, bool yInBounds) = isQuadInBounds(scaledQuad);
+
+            if (xInBounds && yInBounds && slider.Path.HasValidLength)
+                return;
+
+            for (int i = 0; i < slider.Path.ControlPoints.Count; i++)
+                slider.Path.ControlPoints[i].Position = originalPathPositions[i];
+
+            // Snap the slider's length again to undo the potentially-invalid length applied by the previous snap.
+            slider.SnapTo(snapProvider);
+        }
+
+        private (bool X, bool Y) isQuadInBounds(Quad quad)
+        {
+            bool xInBounds = (quad.TopLeft.X >= 0) && (quad.BottomRight.X <= OsuPlayfield.BASE_SIZE.X);
+            bool yInBounds = (quad.TopLeft.Y >= 0) && (quad.BottomRight.Y <= OsuPlayfield.BASE_SIZE.Y);
+
+            return (xInBounds, yInBounds);
+        }
+
+        /// <summary>
+        /// Clamp scale for multi-object-scaling where selection does not exceed playfield bounds or flip.
+        /// </summary>
+        /// <param name="selectionQuad">The quad surrounding the hitobjects</param>
+        /// <param name="origin">The origin from which the scale operation is performed</param>
+        /// <param name="scale">The scale to be clamped</param>
+        /// <returns>The clamped scale vector</returns>
+        private Vector2 getClampedScale(Quad selectionQuad, Vector2 origin, Vector2 scale)
+        {
+            //todo: this is not always correct for selections involving sliders. This approximation assumes each point is scaled independently, but sliderends move with the sliderhead.
+
+            var tl1 = Vector2.Divide(-origin, selectionQuad.TopLeft - origin);
+            var tl2 = Vector2.Divide(OsuPlayfield.BASE_SIZE - origin, selectionQuad.TopLeft - origin);
+            var br1 = Vector2.Divide(-origin, selectionQuad.BottomRight - origin);
+            var br2 = Vector2.Divide(OsuPlayfield.BASE_SIZE - origin, selectionQuad.BottomRight - origin);
+
+            if (!Precision.AlmostEquals(selectionQuad.TopLeft.X - origin.X, 0))
+                scale.X = selectionQuad.TopLeft.X - origin.X < 0 ? MathHelper.Clamp(scale.X, tl2.X, tl1.X) : MathHelper.Clamp(scale.X, tl1.X, tl2.X);
+            if (!Precision.AlmostEquals(selectionQuad.TopLeft.Y - origin.Y, 0))
+                scale.Y = selectionQuad.TopLeft.Y - origin.Y < 0 ? MathHelper.Clamp(scale.Y, tl2.Y, tl1.Y) : MathHelper.Clamp(scale.Y, tl1.Y, tl2.Y);
+            if (!Precision.AlmostEquals(selectionQuad.BottomRight.X - origin.X, 0))
+                scale.X = selectionQuad.BottomRight.X - origin.X < 0 ? MathHelper.Clamp(scale.X, br2.X, br1.X) : MathHelper.Clamp(scale.X, br1.X, br2.X);
+            if (!Precision.AlmostEquals(selectionQuad.BottomRight.Y - origin.Y, 0))
+                scale.Y = selectionQuad.BottomRight.Y - origin.Y < 0 ? MathHelper.Clamp(scale.Y, br2.Y, br1.Y) : MathHelper.Clamp(scale.Y, br1.Y, br2.Y);
+
+            return Vector2.ComponentMax(scale, new Vector2(Precision.FLOAT_EPSILON));
+        }
+
+        private void moveSelectionInBounds()
+        {
+            Quad quad = GeometryUtils.GetSurroundingQuad(objectsInScale!.Keys);
+
+            Vector2 delta = Vector2.Zero;
+
+            if (quad.TopLeft.X < 0)
+                delta.X -= quad.TopLeft.X;
+            if (quad.TopLeft.Y < 0)
+                delta.Y -= quad.TopLeft.Y;
+
+            if (quad.BottomRight.X > OsuPlayfield.BASE_SIZE.X)
+                delta.X -= quad.BottomRight.X - OsuPlayfield.BASE_SIZE.X;
+            if (quad.BottomRight.Y > OsuPlayfield.BASE_SIZE.Y)
+                delta.Y -= quad.BottomRight.Y - OsuPlayfield.BASE_SIZE.Y;
+
+            foreach (var (h, _) in objectsInScale!)
+                h.Position += delta;
+        }
+
+        private struct OriginalHitObjectState
+        {
+            public Vector2 Position { get; }
+            public Vector2[]? PathControlPointPositions { get; }
+            public PathType?[]? PathControlPointTypes { get; }
+
+            public OriginalHitObjectState(OsuHitObject hitObject)
+            {
+                Position = hitObject.Position;
+                PathControlPointPositions = (hitObject as IHasPath)?.Path.ControlPoints.Select(p => p.Position).ToArray();
+                PathControlPointTypes = (hitObject as IHasPath)?.Path.ControlPoints.Select(p => p.Type).ToArray();
+            }
+        }
+    }
+}

osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs

@@ -19,6 +19,7 @@ namespace osu.Game.Rulesets.Osu.Mods
         public override ModType Type => ModType.Fun;
         public override LocalisableString Description => "Put your faith in the approach circles...";
         public override double ScoreMultiplier => 1;
+        public override bool Ranked => true;
 
         public override Type[] IncompatibleMods => new[] { typeof(IHidesApproachCircles), typeof(OsuModDepth) };
 

osu.Game.Rulesets.Osu/Skinning/Default/ManualSliderBody.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using osu.Framework.Graphics;
 using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
@@ -11,10 +12,11 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
     /// </summary>
     public partial class ManualSliderBody : SliderBody
     {
-        public new void SetVertices(IReadOnlyList<Vector2> vertices)
+        public ManualSliderBody()
         {
-            base.SetVertices(vertices);
+            AutoSizeAxes = Axes.Both;
-            Size = Path.Size;
         }
+
+        public new void SetVertices(IReadOnlyList<Vector2> vertices) => base.SetVertices(vertices);
     }
 }

osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs

@@ -8,7 +8,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Primitives;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
@@ -37,7 +36,7 @@ namespace osu.Game.Rulesets.Osu.UI
 
         // For osu! gameplay, everything is always on screen.
         // Skipping masking calculations improves performance in intense beatmaps (ie. https://osu.ppy.sh/beatmapsets/150945#osu/372245)
-        public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => false;
+        public override bool UpdateSubTreeMasking() => false;
 
         public SmokeContainer Smoke { get; }
         public FollowPointRenderer FollowPoints { get; }

osu.Game.Rulesets.Taiko/Edit/DrawableTaikoEditorRuleset.cs

@@ -26,12 +26,5 @@ namespace osu.Game.Rulesets.Taiko.Edit
 
             ShowSpeedChanges.BindValueChanged(showChanges => VisualisationMethod = showChanges.NewValue ? ScrollVisualisationMethod.Overlapping : ScrollVisualisationMethod.Constant, true);
         }
-
-        protected override double ComputeTimeRange()
-        {
-            // Adjust when we're using constant algorithm to not be sluggish.
-            double multiplier = ShowSpeedChanges.Value ? 1 : 4;
-            return base.ComputeTimeRange() / multiplier;
-        }
     }
 }

osu.Game.Rulesets.Taiko/Mods/TaikoModConstantSpeed.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.Sprites;
+using osu.Framework.Localisation;
+using osu.Game.Configuration;
+using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Rulesets.Taiko.UI;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Taiko.Mods
+{
+    public class TaikoModConstantSpeed : Mod, IApplicableToDrawableRuleset<TaikoHitObject>
+    {
+        public override string Name => "Constant Speed";
+        public override string Acronym => "CS";
+        public override double ScoreMultiplier => 0.9;
+        public override LocalisableString Description => "No more tricky speed changes!";
+        public override IconUsage? Icon => FontAwesome.Solid.Equals;
+        public override ModType Type => ModType.Conversion;
+
+        public void ApplyToDrawableRuleset(DrawableRuleset<TaikoHitObject> drawableRuleset)
+        {
+            var taikoRuleset = (DrawableTaikoRuleset)drawableRuleset;
+            taikoRuleset.VisualisationMethod = ScrollVisualisationMethod.Constant;
+        }
+    }
+}

osu.Game.Rulesets.Taiko/TaikoRuleset.cs

@@ -150,6 +150,7 @@ namespace osu.Game.Rulesets.Taiko
                         new TaikoModClassic(),
                         new TaikoModSwap(),
                         new TaikoModSingleTap(),
+                        new TaikoModConstantSpeed(),
                     };
 
                 case ModType.Automation:

osu.Game.Rulesets.Taiko/UI/DrawableTaikoRuleset.cs

@@ -82,7 +82,12 @@ namespace osu.Game.Rulesets.Taiko.UI
             TimeRange.Value = ComputeTimeRange();
         }
 
-        protected virtual double ComputeTimeRange() => PlayfieldAdjustmentContainer.ComputeTimeRange();
+        protected virtual double ComputeTimeRange()
+        {
+            // Adjust when we're using constant algorithm to not be sluggish.
+            double multiplier = VisualisationMethod == ScrollVisualisationMethod.Constant ? 4 * Beatmap.Difficulty.SliderMultiplier : 1;
+            return PlayfieldAdjustmentContainer.ComputeTimeRange() / multiplier;
+        }
 
         protected override void UpdateAfterChildren()
         {

osu.Game.Rulesets.Taiko/UI/TaikoPlayfield.cs

@@ -7,7 +7,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Primitives;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Judgements;
@@ -345,7 +344,7 @@ namespace osu.Game.Rulesets.Taiko.UI
         {
             public void Add(Drawable proxy) => AddInternal(proxy);
 
-            public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds)
+            public override bool UpdateSubTreeMasking()
             {
                 // DrawableHitObject disables masking.
                 // Hitobject content is proxied and unproxied based on hit status and the IsMaskedAway value could get stuck because of this.

osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs

@@ -1188,5 +1188,36 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.That(beatmap.HitObjects[0].GetEndTime(), Is.EqualTo(3153));
             }
         }
+
+        [Test]
+        public void TestBeatmapDifficultyIsClamped()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("out-of-range-difficulties.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var decoded = decoder.Decode(stream).Difficulty;
+                Assert.That(decoded.DrainRate, Is.EqualTo(10));
+                Assert.That(decoded.CircleSize, Is.EqualTo(10));
+                Assert.That(decoded.OverallDifficulty, Is.EqualTo(10));
+                Assert.That(decoded.ApproachRate, Is.EqualTo(10));
+                Assert.That(decoded.SliderMultiplier, Is.EqualTo(3.6));
+                Assert.That(decoded.SliderTickRate, Is.EqualTo(8));
+            }
+        }
+
+        [Test]
+        public void TestManiaBeatmapDifficultyCircleSizeClamp()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("out-of-range-difficulties-mania.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var decoded = decoder.Decode(stream).Difficulty;
+                Assert.That(decoded.CircleSize, Is.EqualTo(14));
+            }
+        }
     }
 }

osu.Game.Tests/Resources/out-of-range-difficulties-mania.osu

@@ -0,0 +1,5 @@
+[General]
+Mode: 3
+
+[Difficulty]
+CircleSize:14

osu.Game.Tests/Resources/out-of-range-difficulties.osu

@@ -0,0 +1,10 @@
+[General]
+Mode: 0
+
+[Difficulty]
+HPDrainRate:25
+CircleSize:25
+OverallDifficulty:25
+ApproachRate:30
+SliderMultiplier:30
+SliderTickRate:30

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

@@ -10,9 +10,11 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
 using osu.Framework.Testing;
 using osu.Framework.Threading;
 using osu.Game.Screens.Edit.Compose.Components;
+using osu.Game.Utils;
 using osuTK;
 using osuTK.Input;
 
@@ -26,9 +28,13 @@ namespace osu.Game.Tests.Visual.Editing
         [Cached(typeof(SelectionRotationHandler))]
         private TestSelectionRotationHandler rotationHandler;
 
+        [Cached(typeof(SelectionScaleHandler))]
+        private TestSelectionScaleHandler scaleHandler;
+
         public TestSceneComposeSelectBox()
         {
             rotationHandler = new TestSelectionRotationHandler(() => selectionArea);
+            scaleHandler = new TestSelectionScaleHandler(() => selectionArea);
         }
 
         [SetUp]
@@ -45,13 +51,8 @@ namespace osu.Game.Tests.Visual.Editing
                     {
                         RelativeSizeAxes = Axes.Both,
 
-                        CanScaleX = true,
-                        CanScaleY = true,
-                        CanScaleDiagonally = true,
                         CanFlipX = true,
                         CanFlipY = true,
-
-                        OnScale = handleScale
                     }
                 }
             };
@@ -60,27 +61,6 @@ namespace osu.Game.Tests.Visual.Editing
             InputManager.ReleaseButton(MouseButton.Left);
         });
 
-        private bool handleScale(Vector2 amount, Anchor reference)
-        {
-            if ((reference & Anchor.y1) == 0)
-            {
-                int directionY = (reference & Anchor.y0) > 0 ? -1 : 1;
-                if (directionY < 0)
-                    selectionArea.Y += amount.Y;
-                selectionArea.Height += directionY * amount.Y;
-            }
-
-            if ((reference & Anchor.x1) == 0)
-            {
-                int directionX = (reference & Anchor.x0) > 0 ? -1 : 1;
-                if (directionX < 0)
-                    selectionArea.X += amount.X;
-                selectionArea.Width += directionX * amount.X;
-            }
-
-            return true;
-        }
-
         private partial class TestSelectionRotationHandler : SelectionRotationHandler
         {
             private readonly Func<Container> getTargetContainer;
@@ -125,6 +105,51 @@ namespace osu.Game.Tests.Visual.Editing
             }
         }
 
+        private partial class TestSelectionScaleHandler : SelectionScaleHandler
+        {
+            private readonly Func<Container> getTargetContainer;
+
+            public TestSelectionScaleHandler(Func<Container> getTargetContainer)
+            {
+                this.getTargetContainer = getTargetContainer;
+
+                CanScaleX.Value = true;
+                CanScaleY.Value = true;
+                CanScaleDiagonally.Value = true;
+            }
+
+            [CanBeNull]
+            private Container targetContainer;
+
+            public override void Begin()
+            {
+                if (targetContainer != null)
+                    throw new InvalidOperationException($"Cannot {nameof(Begin)} a scale operation while another is in progress!");
+
+                targetContainer = getTargetContainer();
+                OriginalSurroundingQuad = new Quad(targetContainer!.X, targetContainer.Y, targetContainer.Width, targetContainer.Height);
+            }
+
+            public override void Update(Vector2 scale, Vector2? origin = null, Axes adjustAxis = Axes.Both)
+            {
+                if (targetContainer == null)
+                    throw new InvalidOperationException($"Cannot {nameof(Update)} a scale operation without calling {nameof(Begin)} first!");
+
+                Vector2 actualOrigin = origin ?? Vector2.Zero;
+
+                targetContainer.Position = GeometryUtils.GetScaledPosition(scale, actualOrigin, OriginalSurroundingQuad!.Value.TopLeft);
+                targetContainer.Size = OriginalSurroundingQuad!.Value.Size * scale;
+            }
+
+            public override void Commit()
+            {
+                if (targetContainer == null)
+                    throw new InvalidOperationException($"Cannot {nameof(Commit)} a scale operation without calling {nameof(Begin)} first!");
+
+                targetContainer = null;
+            }
+        }
+
         [Test]
         public void TestRotationHandleShownOnHover()
         {

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

@@ -5,6 +5,7 @@ using System.Linq;
 using System.Collections.Generic;
 using Humanizer;
 using NUnit.Framework;
+using osu.Framework.Input;
 using osu.Framework.Testing;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -396,7 +397,7 @@ namespace osu.Game.Tests.Visual.Editing
             textBox.Current.Value = bank;
             // force a commit via keyboard.
             // this is needed when testing attempting to set empty bank - which should revert to the previous value, but only on commit.
-            InputManager.ChangeFocus(textBox);
+            ((IFocusManager)InputManager).ChangeFocus(textBox);
             InputManager.Key(Key.Enter);
         });
 

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

@@ -6,6 +6,7 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
+using osu.Framework.Input;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.Timing;
 using osu.Game.Graphics.UserInterface;
@@ -62,12 +63,12 @@ namespace osu.Game.Tests.Visual.Editing
             createLabelledTimeSignature(TimeSignature.SimpleQuadruple);
             AddAssert("current is 4/4", () => timeSignature.Current.Value.Equals(TimeSignature.SimpleQuadruple));
 
-            AddStep("focus text box", () => InputManager.ChangeFocus(numeratorTextBox));
+            AddStep("focus text box", () => ((IFocusManager)InputManager).ChangeFocus(numeratorTextBox));
 
             AddStep("set numerator to 7", () => numeratorTextBox.Current.Value = "7");
             AddAssert("current is 4/4", () => timeSignature.Current.Value.Equals(TimeSignature.SimpleQuadruple));
 
-            AddStep("drop focus", () => InputManager.ChangeFocus(null));
+            AddStep("drop focus", () => ((IFocusManager)InputManager).ChangeFocus(null));
             AddAssert("current is 7/4", () => timeSignature.Current.Value.Equals(new TimeSignature(7)));
         }
 
@@ -77,12 +78,12 @@ namespace osu.Game.Tests.Visual.Editing
             createLabelledTimeSignature(TimeSignature.SimpleQuadruple);
             AddAssert("current is 4/4", () => timeSignature.Current.Value.Equals(TimeSignature.SimpleQuadruple));
 
-            AddStep("focus text box", () => InputManager.ChangeFocus(numeratorTextBox));
+            AddStep("focus text box", () => ((IFocusManager)InputManager).ChangeFocus(numeratorTextBox));
 
             AddStep("set numerator to 0", () => numeratorTextBox.Current.Value = "0");
             AddAssert("current is 4/4", () => timeSignature.Current.Value.Equals(TimeSignature.SimpleQuadruple));
 
-            AddStep("drop focus", () => InputManager.ChangeFocus(null));
+            AddStep("drop focus", () => ((IFocusManager)InputManager).ChangeFocus(null));
             AddAssert("current is 4/4", () => timeSignature.Current.Value.Equals(TimeSignature.SimpleQuadruple));
             AddAssert("numerator is 4", () => numeratorTextBox.Current.Value == "4");
         }

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

@@ -0,0 +1,83 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Graphics;
+using osu.Game.Localisation;
+using osu.Game.Online.API;
+using osu.Game.Online.Metadata;
+using osu.Game.Online.Rooms;
+using osu.Game.Screens.Menu;
+using osuTK.Input;
+using Color4 = osuTK.Graphics.Color4;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    [TestFixture]
+    public partial class TestSceneMainMenuButton : OsuTestScene
+    {
+        [Resolved]
+        private MetadataClient metadataClient { get; set; } = null!;
+
+        private DummyAPIAccess dummyAPI => (DummyAPIAccess)API;
+
+        [Test]
+        public void TestStandardButton()
+        {
+            AddStep("add button", () => Child = new MainMenuButton(
+                ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Color4(102, 68, 204, 255), _ => { }, 0, Key.P)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                ButtonSystemState = ButtonSystemState.TopLevel,
+            });
+        }
+
+        [Test]
+        public void TestDailyChallengeButton()
+        {
+            AddStep("beatmap of the day not active", () => metadataClient.DailyChallengeUpdated(null));
+
+            AddStep("set up API", () => dummyAPI.HandleRequest = req =>
+            {
+                switch (req)
+                {
+                    case GetRoomRequest getRoomRequest:
+                        if (getRoomRequest.RoomId != 1234)
+                            return false;
+
+                        var beatmap = CreateAPIBeatmap();
+                        beatmap.OnlineID = 1001;
+                        getRoomRequest.TriggerSuccess(new Room
+                        {
+                            RoomID = { Value = 1234 },
+                            Playlist =
+                            {
+                                new PlaylistItem(beatmap)
+                            },
+                            EndDate = { Value = DateTimeOffset.Now.AddSeconds(30) }
+                        });
+                        return true;
+
+                    default:
+                        return false;
+                }
+            });
+
+            AddStep("add button", () => Child = new DailyChallengeButton(@"button-default-select", new Color4(102, 68, 204, 255), _ => { }, 0, Key.D)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                ButtonSystemState = ButtonSystemState.TopLevel,
+            });
+
+            AddStep("beatmap of the day active", () => metadataClient.DailyChallengeUpdated(new DailyChallengeInfo
+            {
+                RoomID = 1234,
+            }));
+        }
+    }
+}

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

@@ -10,6 +10,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Input;
 using osu.Framework.Localisation;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -623,7 +624,7 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddStep("press tab", () => InputManager.Key(Key.Tab));
             AddAssert("search text box focused", () => modSelectOverlay.SearchTextBox.HasFocus);
 
-            AddStep("unfocus search text box externally", () => InputManager.ChangeFocus(null));
+            AddStep("unfocus search text box externally", () => ((IFocusManager)InputManager).ChangeFocus(null));
 
             AddStep("press tab", () => InputManager.Key(Key.Tab));
             AddAssert("search text box focused", () => modSelectOverlay.SearchTextBox.HasFocus);

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

@@ -5,6 +5,7 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Framework.Input;
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
@@ -42,7 +43,7 @@ namespace osu.Game.Tests.Visual.UserInterface
         {
             AddStep("set instantaneous to false", () => sliderWithTextBoxInput.Instantaneous = false);
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("change text", () => textBox.Text = "3");
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.Zero);
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.Zero);
@@ -61,7 +62,7 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("textbox changed", () => textBox.Current.Value, () => Is.EqualTo("-5"));
             AddAssert("current changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("set text to invalid", () => textBox.Text = "garbage");
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
@@ -71,12 +72,12 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("set text to invalid", () => textBox.Text = "garbage");
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("lose focus", () => InputManager.ChangeFocus(null));
+            AddStep("lose focus", () => ((IFocusManager)InputManager).ChangeFocus(null));
             AddAssert("text restored", () => textBox.Text, () => Is.EqualTo("-5"));
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
@@ -87,7 +88,7 @@ namespace osu.Game.Tests.Visual.UserInterface
         {
             AddStep("set instantaneous to true", () => sliderWithTextBoxInput.Instantaneous = true);
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("change text", () => textBox.Text = "3");
             AddAssert("slider moved", () => slider.Current.Value, () => Is.EqualTo(3));
             AddAssert("current changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(3));
@@ -106,7 +107,7 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("textbox not changed", () => textBox.Current.Value, () => Is.EqualTo("-5"));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("set text to invalid", () => textBox.Text = "garbage");
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
@@ -116,12 +117,12 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("focus textbox", () => InputManager.ChangeFocus(textBox));
+            AddStep("focus textbox", () => ((IFocusManager)InputManager).ChangeFocus(textBox));
             AddStep("set text to invalid", () => textBox.Text = "garbage");
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));
 
-            AddStep("lose focus", () => InputManager.ChangeFocus(null));
+            AddStep("lose focus", () => ((IFocusManager)InputManager).ChangeFocus(null));
             AddAssert("text restored", () => textBox.Text, () => Is.EqualTo("-5"));
             AddAssert("slider not moved", () => slider.Current.Value, () => Is.EqualTo(-5));
             AddAssert("current not changed", () => sliderWithTextBoxInput.Current.Value, () => Is.EqualTo(-5));

osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs

@@ -58,7 +58,7 @@ namespace osu.Game.Tournament.Screens.Ladder.Components
             editorInfo.Selected.ValueChanged += selection =>
             {
                 // ensure any ongoing edits are committed out to the *current* selection before changing to a new one.
-                GetContainingInputManager().TriggerFocusContention(null);
+                GetContainingFocusManager().TriggerFocusContention(null);
 
                 // Required to avoid cyclic failure in BindableWithCurrent (TriggerChange called during the Current_Set process).
                 // Arguable a framework issue but since we haven't hit it anywhere else a local workaround seems best.

osu.Game.Tournament/Screens/Ladder/LadderDragContainer.cs

@@ -22,7 +22,7 @@ namespace osu.Game.Tournament.Screens.Ladder
 
         protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
 
-        public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => false;
+        public override bool UpdateSubTreeMasking() => false;
 
         protected override void OnDrag(DragEvent e)
         {

osu.Game/Beatmaps/Drawables/UpdateableOnlineBeatmapSetCover.cs

@@ -27,8 +27,17 @@ namespace osu.Game.Beatmaps.Drawables
             set => base.Masking = value;
         }
 
-        public UpdateableOnlineBeatmapSetCover(BeatmapSetCoverType coverType = BeatmapSetCoverType.Cover)
+        protected override double LoadDelay { get; }
+
+        private readonly double timeBeforeUnload;
+
+        protected override double TransformDuration => 400;
+
+        public UpdateableOnlineBeatmapSetCover(BeatmapSetCoverType coverType = BeatmapSetCoverType.Cover, double timeBeforeLoad = 500, double timeBeforeUnload = 1000)
         {
+            LoadDelay = timeBeforeLoad;
+            this.timeBeforeUnload = timeBeforeUnload;
+
             this.coverType = coverType;
 
             InternalChild = new Box
@@ -38,12 +47,12 @@ namespace osu.Game.Beatmaps.Drawables
             };
         }
 
-        protected override double LoadDelay => 500;
-
-        protected override double TransformDuration => 400;
-
         protected override DelayedLoadWrapper CreateDelayedLoadWrapper(Func<Drawable> createContentFunc, double timeBeforeLoad)
-            => new DelayedLoadUnloadWrapper(createContentFunc, timeBeforeLoad);
+            => new DelayedLoadUnloadWrapper(createContentFunc, timeBeforeLoad, timeBeforeUnload)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+            };
 
         protected override Drawable CreateDrawable(IBeatmapSetOnlineInfo model)
         {

osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs

@@ -85,6 +85,8 @@ namespace osu.Game.Beatmaps.Formats
 
             base.ParseStreamInto(stream, beatmap);
 
+            applyDifficultyRestrictions(beatmap.Difficulty, beatmap);
+
             flushPendingPoints();
 
             // Objects may be out of order *only* if a user has manually edited an .osu file.
@@ -102,10 +104,30 @@ namespace osu.Game.Beatmaps.Formats
             }
         }
 
+        /// <summary>
+        /// Ensures that all <see cref="BeatmapDifficulty"/> settings are within the allowed ranges.
+        /// See also: https://github.com/peppy/osu-stable-reference/blob/0e425c0d525ef21353c8293c235cc0621d28338b/osu!/GameplayElements/Beatmaps/Beatmap.cs#L567-L614
+        /// </summary>
+        private static void applyDifficultyRestrictions(BeatmapDifficulty difficulty, Beatmap beatmap)
+        {
+            difficulty.DrainRate = Math.Clamp(difficulty.DrainRate, 0, 10);
+
+            // mania uses "circle size" for key count, thus different allowable range
+            difficulty.CircleSize = beatmap.BeatmapInfo.Ruleset.OnlineID != 3
+                ? Math.Clamp(difficulty.CircleSize, 0, 10)
+                : Math.Clamp(difficulty.CircleSize, 1, 18);
+
+            difficulty.OverallDifficulty = Math.Clamp(difficulty.OverallDifficulty, 0, 10);
+            difficulty.ApproachRate = Math.Clamp(difficulty.ApproachRate, 0, 10);
+
+            difficulty.SliderMultiplier = Math.Clamp(difficulty.SliderMultiplier, 0.4, 3.6);
+            difficulty.SliderTickRate = Math.Clamp(difficulty.SliderTickRate, 0.5, 8);
+        }
+
         /// <summary>
         /// Processes the beatmap such that a new combo is started the first hitobject following each break.
         /// </summary>
-        private void postProcessBreaks(Beatmap beatmap)
+        private static void postProcessBreaks(Beatmap beatmap)
         {
             int currentBreak = 0;
             bool forceNewCombo = false;
@@ -161,7 +183,7 @@ namespace osu.Game.Beatmaps.Formats
         /// This method's intention is to restore those legacy defaults.
         /// See also: https://osu.ppy.sh/wiki/en/Client/File_formats/Osu_%28file_format%29
         /// </summary>
-        private void applyLegacyDefaults(BeatmapInfo beatmapInfo)
+        private static void applyLegacyDefaults(BeatmapInfo beatmapInfo)
         {
             beatmapInfo.WidescreenStoryboard = false;
             beatmapInfo.SamplesMatchPlaybackRate = false;
@@ -402,11 +424,11 @@ namespace osu.Game.Beatmaps.Formats
                     break;
 
                 case @"SliderMultiplier":
-                    difficulty.SliderMultiplier = Math.Clamp(Parsing.ParseDouble(pair.Value), 0.4, 3.6);
+                    difficulty.SliderMultiplier = Parsing.ParseDouble(pair.Value);
                     break;
 
                 case @"SliderTickRate":
-                    difficulty.SliderTickRate = Math.Clamp(Parsing.ParseDouble(pair.Value), 0.5, 8);
+                    difficulty.SliderTickRate = Parsing.ParseDouble(pair.Value);
                     break;
             }
         }

osu.Game/Collections/CollectionDropdown.cs

@@ -202,7 +202,7 @@ namespace osu.Game.Collections
             [BackgroundDependencyLoader]
             private void load()
             {
-                AddInternal(addOrRemoveButton = new IconButton
+                AddInternal(addOrRemoveButton = new NoFocusChangeIconButton
                 {
                     Anchor = Anchor.CentreRight,
                     Origin = Anchor.CentreRight,
@@ -271,6 +271,11 @@ namespace osu.Game.Collections
             }
 
             protected override Drawable CreateContent() => (Content)base.CreateContent();
+
+            private partial class NoFocusChangeIconButton : IconButton
+            {
+                public override bool ChangeFocusOnClick => false;
+            }
         }
     }
 }

osu.Game/Collections/ManageCollectionsDialog.cs

@@ -137,7 +137,7 @@ namespace osu.Game.Collections
             this.ScaleTo(0.9f, exit_duration);
 
             // Ensure that textboxes commit
-            GetContainingInputManager()?.TriggerFocusContention(this);
+            GetContainingFocusManager()?.TriggerFocusContention(this);
         }
     }
 }

osu.Game/Database/EmptyRealmSet.cs

@@ -6,6 +6,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Collections.Specialized;
 using System.ComponentModel;
+using JetBrains.Annotations;
 using Realms;
 using Realms.Schema;
 
@@ -15,8 +16,12 @@ namespace osu.Game.Database
     {
         private IList<T> emptySet => Array.Empty<T>();
 
+        [MustDisposeResource]
         public IEnumerator<T> GetEnumerator() => emptySet.GetEnumerator();
+
+        [MustDisposeResource]
         IEnumerator IEnumerable.GetEnumerator() => emptySet.GetEnumerator();
+
         public int Count => emptySet.Count;
         public T this[int index] => emptySet[index];
         public int IndexOf(object? item) => item == null ? -1 : emptySet.IndexOf((T)item);

osu.Game/Graphics/OsuIcon.cs

@@ -120,6 +120,7 @@ namespace osu.Game.Graphics
         public static IconUsage Cross => get(OsuIconMapping.Cross);
         public static IconUsage CrossCircle => get(OsuIconMapping.CrossCircle);
         public static IconUsage Crown => get(OsuIconMapping.Crown);
+        public static IconUsage DailyChallenge => get(OsuIconMapping.DailyChallenge);
         public static IconUsage Debug => get(OsuIconMapping.Debug);
         public static IconUsage Delete => get(OsuIconMapping.Delete);
         public static IconUsage Details => get(OsuIconMapping.Details);
@@ -218,6 +219,9 @@ namespace osu.Game.Graphics
             [Description(@"crown")]
             Crown,
 
+            [Description(@"daily-challenge")]
+            DailyChallenge,
+
             [Description(@"debug")]
             Debug,
 

osu.Game/Graphics/UserInterface/ExpandableSlider.cs

@@ -1,7 +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.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -10,7 +10,7 @@ using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -18,7 +18,7 @@ namespace osu.Game.Graphics.UserInterface
     /// An <see cref="IExpandable"/> implementation for the UI slider bar control.
     /// </summary>
     public partial class ExpandableSlider<T, TSlider> : CompositeDrawable, IExpandable, IHasCurrentValue<T>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
         where TSlider : RoundedSliderBar<T>, new()
     {
         private readonly OsuSpriteText label;
@@ -129,7 +129,7 @@ namespace osu.Game.Graphics.UserInterface
     /// An <see cref="IExpandable"/> implementation for the UI slider bar control.
     /// </summary>
     public partial class ExpandableSlider<T> : ExpandableSlider<T, RoundedSliderBar<T>>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
     }
 }

osu.Game/Graphics/UserInterface/FocusedTextBox.cs

@@ -31,7 +31,7 @@ namespace osu.Game.Graphics.UserInterface
             if (!allowImmediateFocus)
                 return;
 
-            Scheduler.Add(() => GetContainingInputManager().ChangeFocus(this));
+            Scheduler.Add(() => GetContainingFocusManager().ChangeFocus(this));
         }
 
         public new void KillFocus() => base.KillFocus();

osu.Game/Graphics/UserInterface/OsuSliderBar.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using System.Globalization;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -15,7 +16,7 @@ using osu.Game.Utils;
 namespace osu.Game.Graphics.UserInterface
 {
     public abstract partial class OsuSliderBar<T> : SliderBar<T>, IHasTooltip
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
         public bool PlaySamplesOnAdjust { get; set; } = true;
 
@@ -85,11 +86,11 @@ namespace osu.Game.Graphics.UserInterface
         private LocalisableString getTooltipText(T value)
         {
             if (CurrentNumber.IsInteger)
-                return value.ToInt32(NumberFormatInfo.InvariantInfo).ToString("N0");
+                return int.CreateTruncating(value).ToString("N0");
 
-            double floatValue = value.ToDouble(NumberFormatInfo.InvariantInfo);
+            double floatValue = double.CreateTruncating(value);
 
-            decimal decimalPrecision = normalise(CurrentNumber.Precision.ToDecimal(NumberFormatInfo.InvariantInfo), max_decimal_digits);
+            decimal decimalPrecision = normalise(decimal.CreateTruncating(CurrentNumber.Precision), max_decimal_digits);
 
             // Find the number of significant digits (we could have less than 5 after normalize())
             int significantDigits = FormatUtils.FindPrecision(decimalPrecision);

osu.Game/Graphics/UserInterface/OsuTabControl.cs

@@ -8,6 +8,8 @@ using System.Linq;
 using osuTK;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
 using osu.Framework.Extensions.Color4Extensions;
@@ -143,13 +145,6 @@ namespace osu.Game.Graphics.UserInterface
                     FadeUnhovered();
             }
 
-            [BackgroundDependencyLoader]
-            private void load(OsuColour colours)
-            {
-                if (accentColour == default)
-                    AccentColour = colours.Blue;
-            }
-
             public OsuTabItem(T value)
                 : base(value)
             {
@@ -196,10 +191,21 @@ namespace osu.Game.Graphics.UserInterface
                         Origin = Anchor.BottomLeft,
                         Anchor = Anchor.BottomLeft,
                     },
-                    new HoverClickSounds(HoverSampleSet.TabSelect)
+                    new HoverSounds(HoverSampleSet.TabSelect)
                 };
             }
 
+            private Sample selectSample;
+
+            [BackgroundDependencyLoader]
+            private void load(OsuColour colours, AudioManager audio)
+            {
+                if (accentColour == default)
+                    AccentColour = colours.Blue;
+
+                selectSample = audio.Samples.Get(@"UI/tabselect-select");
+            }
+
             protected override void OnActivated()
             {
                 Text.Font = Text.Font.With(weight: FontWeight.Bold);
@@ -211,6 +217,8 @@ namespace osu.Game.Graphics.UserInterface
                 Text.Font = Text.Font.With(weight: FontWeight.Medium);
                 FadeUnhovered();
             }
+
+            protected override void OnActivatedByUser() => selectSample.Play();
         }
     }
 }

osu.Game/Graphics/UserInterface/PageTabControl.cs

@@ -7,6 +7,8 @@ using System;
 using osuTK;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
@@ -53,6 +55,8 @@ namespace osu.Game.Graphics.UserInterface
                 }
             }
 
+            private Sample selectSample = null!;
+
             public PageTabItem(T value)
                 : base(value)
             {
@@ -78,12 +82,18 @@ namespace osu.Game.Graphics.UserInterface
                         Origin = Anchor.BottomLeft,
                         Anchor = Anchor.BottomLeft,
                     },
-                    new HoverClickSounds(HoverSampleSet.TabSelect)
+                    new HoverSounds(HoverSampleSet.TabSelect)
                 };
 
                 Active.BindValueChanged(active => Text.Font = Text.Font.With(Typeface.Torus, weight: active.NewValue ? FontWeight.Bold : FontWeight.Medium), true);
             }
 
+            [BackgroundDependencyLoader]
+            private void load(AudioManager audio)
+            {
+                selectSample = audio.Samples.Get(@"UI/tabselect-select");
+            }
+
             protected virtual LocalisableString CreateText() => (Value as Enum)?.GetLocalisableDescription() ?? Value.ToString();
 
             protected override bool OnHover(HoverEvent e)
@@ -112,6 +122,8 @@ namespace osu.Game.Graphics.UserInterface
             protected override void OnActivated() => slideActive();
 
             protected override void OnDeactivated() => slideInactive();
+
+            protected override void OnActivatedByUser() => selectSample.Play();
         }
     }
 }

osu.Game/Graphics/UserInterface/RoundedSliderBar.cs

@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osuTK;
+using System.Numerics;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
@@ -11,11 +11,12 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
+using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public partial class RoundedSliderBar<T> : OsuSliderBar<T>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
         protected readonly Nub Nub;
         protected readonly Box LeftBox;

osu.Game/Graphics/UserInterface/ShearedSliderBar.cs

@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osuTK;
+using System.Numerics;
 using osuTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
@@ -12,11 +12,12 @@ using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
 using static osu.Game.Graphics.UserInterface.ShearedNub;
+using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public partial class ShearedSliderBar<T> : OsuSliderBar<T>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
         protected readonly ShearedNub Nub;
         protected readonly Box LeftBox;

osu.Game/Graphics/UserInterfaceV2/LabelledSliderBar.cs

@@ -1,14 +1,14 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Overlays.Settings;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
     public partial class LabelledSliderBar<TNumber> : LabelledComponent<SettingsSlider<TNumber>, TNumber>
-        where TNumber : struct, IEquatable<TNumber>, IComparable<TNumber>, IConvertible
+        where TNumber : struct, INumber<TNumber>, IMinMaxValue<TNumber>
     {
         public LabelledSliderBar()
             : base(true)

osu.Game/Graphics/UserInterfaceV2/LabelledTextBox.cs

@@ -57,7 +57,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
         protected override void OnFocus(FocusEvent e)
         {
             base.OnFocus(e);
-            GetContainingInputManager().ChangeFocus(Component);
+            GetContainingFocusManager().ChangeFocus(Component);
         }
 
         protected override OsuTextBox CreateComponent() => CreateTextBox().With(t =>

osu.Game/Graphics/UserInterfaceV2/SliderWithTextBoxInput.cs

@@ -1,7 +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.Numerics;
 using System.Globalization;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -10,12 +10,12 @@ using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Localisation;
 using osu.Game.Overlays.Settings;
 using osu.Game.Utils;
-using osuTK;
+using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
     public partial class SliderWithTextBoxInput<T> : CompositeDrawable, IHasCurrentValue<T>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
         /// <summary>
         /// A custom step value for each key press which actuates a change on this control.
@@ -85,7 +85,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
             Current.BindValueChanged(updateTextBoxFromSlider, true);
         }
 
-        public bool TakeFocus() => GetContainingInputManager().ChangeFocus(textBox);
+        public bool TakeFocus() => GetContainingFocusManager().ChangeFocus(textBox);
 
         private bool updatingFromTextBox;
 
@@ -138,7 +138,7 @@ namespace osu.Game.Graphics.UserInterfaceV2
         {
             if (updatingFromTextBox) return;
 
-            decimal decimalValue = slider.Current.Value.ToDecimal(NumberFormatInfo.InvariantInfo);
+            decimal decimalValue = decimal.CreateTruncating(slider.Current.Value);
             textBox.Text = decimalValue.ToString($@"N{FormatUtils.FindPrecision(decimalValue)}");
         }
     }

osu.Game/Localisation/ButtonSystemStrings.cs

@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Localisation;
@@ -54,6 +54,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString Exit => new TranslatableString(getKey(@"exit"), @"exit");
 
+        /// <summary>
+        /// "daily challenge"
+        /// </summary>
+        public static LocalisableString DailyChallenge => new TranslatableString(getKey(@"daily_challenge"), @"daily challenge");
+
         private static string getKey(string key) => $@"{prefix}:{key}";
     }
 }

osu.Game/Online/Metadata/DailyChallengeInfo.cs

@@ -0,0 +1,16 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using MessagePack;
+
+namespace osu.Game.Online.Metadata
+{
+    [MessagePackObject]
+    [Serializable]
+    public struct DailyChallengeInfo
+    {
+        [Key(0)]
+        public long RoomID { get; set; }
+    }
+}

osu.Game/Online/Metadata/IMetadataClient.cs

@@ -20,5 +20,11 @@ namespace osu.Game.Online.Metadata
         /// Delivers an update of the <see cref="UserPresence"/> of the user with the supplied <paramref name="userId"/>.
         /// </summary>
         Task UserPresenceUpdated(int userId, UserPresence? status);
+
+        /// <summary>
+        /// Delivers an update of the current "daily challenge" status.
+        /// Null value means there is no "daily challenge" currently active.
+        /// </summary>
+        Task DailyChallengeUpdated(DailyChallengeInfo? info);
     }
 }

osu.Game/Online/Metadata/IMetadataServer.cs

@@ -7,7 +7,12 @@ using osu.Game.Users;
 namespace osu.Game.Online.Metadata
 {
     /// <summary>
-    /// Metadata server is responsible for keeping the osu! client up-to-date with any changes.
+    /// Metadata server is responsible for keeping the osu! client up-to-date with various real-time happenings, such as:
+    /// <list type="bullet">
+    /// <item>beatmap updates via BSS,</item>
+    /// <item>online user activity/status updates,</item>
+    /// <item>other real-time happenings, such as current "daily challenge" status.</item>
+    /// </list>
     /// </summary>
     public interface IMetadataServer
     {

osu.Game/Online/Metadata/MetadataClient.cs

@@ -59,6 +59,15 @@ namespace osu.Game.Online.Metadata
 
         #endregion
 
+        #region Daily Challenge
+
+        public abstract IBindable<DailyChallengeInfo?> DailyChallengeInfo { get; }
+
+        /// <inheritdoc/>
+        public abstract Task DailyChallengeUpdated(DailyChallengeInfo? info);
+
+        #endregion
+
         #region Disconnection handling
 
         public event Action? Disconnecting;

osu.Game/Online/Metadata/OnlineMetadataClient.cs

@@ -26,6 +26,9 @@ namespace osu.Game.Online.Metadata
         public override IBindableDictionary<int, UserPresence> UserStates => userStates;
         private readonly BindableDictionary<int, UserPresence> userStates = new BindableDictionary<int, UserPresence>();
 
+        public override IBindable<DailyChallengeInfo?> DailyChallengeInfo => dailyChallengeInfo;
+        private readonly Bindable<DailyChallengeInfo?> dailyChallengeInfo = new Bindable<DailyChallengeInfo?>();
+
         private readonly string endpoint;
 
         private IHubClientConnector? connector;
@@ -58,6 +61,7 @@ namespace osu.Game.Online.Metadata
                     // https://github.com/dotnet/aspnetcore/issues/15198
                     connection.On<BeatmapUpdates>(nameof(IMetadataClient.BeatmapSetsUpdated), ((IMetadataClient)this).BeatmapSetsUpdated);
                     connection.On<int, UserPresence?>(nameof(IMetadataClient.UserPresenceUpdated), ((IMetadataClient)this).UserPresenceUpdated);
+                    connection.On<DailyChallengeInfo?>(nameof(IMetadataClient.DailyChallengeUpdated), ((IMetadataClient)this).DailyChallengeUpdated);
                     connection.On(nameof(IStatefulUserHubClient.DisconnectRequested), ((IMetadataClient)this).DisconnectRequested);
                 };
 
@@ -101,6 +105,7 @@ namespace osu.Game.Online.Metadata
                 {
                     isWatchingUserPresence.Value = false;
                     userStates.Clear();
+                    dailyChallengeInfo.Value = null;
                 });
                 return;
             }
@@ -229,6 +234,12 @@ namespace osu.Game.Online.Metadata
             }
         }
 
+        public override Task DailyChallengeUpdated(DailyChallengeInfo? info)
+        {
+            Schedule(() => dailyChallengeInfo.Value = info);
+            return Task.CompletedTask;
+        }
+
         public override async Task DisconnectRequested()
         {
             await base.DisconnectRequested().ConfigureAwait(false);

osu.Game/Online/Rooms/RoomCategory.cs

@@ -13,5 +13,8 @@ namespace osu.Game.Online.Rooms
 
         [Description("Featured Artist")]
         FeaturedArtist,
+
+        [Description("Daily Challenge")]
+        DailyChallenge,
     }
 }

osu.Game/OsuGameBase.cs

@@ -75,6 +75,12 @@ namespace osu.Game
     {
         public static readonly string[] VIDEO_EXTENSIONS = { ".mp4", ".mov", ".avi", ".flv", ".mpg", ".wmv", ".m4v" };
 
+#if DEBUG
+        public const string GAME_NAME = "osu! (development)";
+#else
+        public const string GAME_NAME = "osu!";
+#endif
+
         public const string OSU_PROTOCOL = "osu://";
 
         public const string CLIENT_STREAM_NAME = @"lazer";
@@ -241,11 +247,7 @@ namespace osu.Game
 
         public OsuGameBase()
         {
-            Name = @"osu!";
+            Name = GAME_NAME;
-
-#if DEBUG
-            Name += " (development)";
-#endif
 
             allowableExceptions = UnhandledExceptionsBeforeCrash;
         }

osu.Game/Overlays/AccountCreation/ScreenEntry.cs

@@ -243,7 +243,7 @@ namespace osu.Game.Overlays.AccountCreation
 
             if (nextTextBox != null)
             {
-                Schedule(() => GetContainingInputManager().ChangeFocus(nextTextBox));
+                Schedule(() => GetContainingFocusManager().ChangeFocus(nextTextBox));
                 return true;
             }
 

osu.Game/Overlays/BeatmapListing/BeatmapListingCardSizeTabControl.cs

@@ -5,6 +5,8 @@
 
 using System;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -47,13 +49,15 @@ namespace osu.Game.Overlays.BeatmapListing
             [Resolved]
             private OverlayColourProvider colourProvider { get; set; }
 
+            private Sample selectSample = null!;
+
             public TabItem(BeatmapCardSize value)
                 : base(value)
             {
             }
 
             [BackgroundDependencyLoader]
-            private void load()
+            private void load(AudioManager audio)
             {
                 AutoSizeAxes = Axes.Both;
                 Masking = true;
@@ -79,8 +83,10 @@ namespace osu.Game.Overlays.BeatmapListing
                             Icon = getIconForCardSize(Value)
                         }
                     },
-                    new HoverClickSounds(HoverSampleSet.TabSelect)
+                    new HoverSounds(HoverSampleSet.TabSelect)
                 };
+
+                selectSample = audio.Samples.Get(@"UI/tabselect-select");
             }
 
             private static IconUsage getIconForCardSize(BeatmapCardSize cardSize)
@@ -111,6 +117,8 @@ namespace osu.Game.Overlays.BeatmapListing
                     updateState();
             }
 
+            protected override void OnActivatedByUser() => selectSample.Play();
+
             protected override void OnDeactivated()
             {
                 if (IsLoaded)

osu.Game/Overlays/BeatmapListing/BeatmapSearchMultipleSelectionFilterRow.cs

@@ -128,7 +128,11 @@ namespace osu.Game.Overlays.BeatmapListing
             protected override bool OnClick(ClickEvent e)
             {
                 base.OnClick(e);
+
+                // this tab item implementation is not managed by a TabControl,
+                // therefore we have to manually update Active state and play select sound when this tab item is clicked.
                 Active.Toggle();
+                SelectSample.Play();
                 return true;
             }
         }

osu.Game/Overlays/BeatmapListing/FilterTabItem.cs

@@ -5,6 +5,8 @@
 
 using System;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
@@ -24,13 +26,15 @@ namespace osu.Game.Overlays.BeatmapListing
 
         private OsuSpriteText text;
 
+        protected Sample SelectSample { get; private set; } = null!;
+
         public FilterTabItem(T value)
             : base(value)
         {
         }
 
         [BackgroundDependencyLoader]
-        private void load()
+        private void load(AudioManager audio)
         {
             AutoSizeAxes = Axes.Both;
             AddRangeInternal(new Drawable[]
@@ -40,10 +44,12 @@ namespace osu.Game.Overlays.BeatmapListing
                     Font = OsuFont.GetFont(size: 13, weight: FontWeight.Regular),
                     Text = LabelFor(Value)
                 },
-                new HoverClickSounds(HoverSampleSet.TabSelect)
+                new HoverSounds(HoverSampleSet.TabSelect)
             });
 
             Enabled.Value = true;
+
+            SelectSample = audio.Samples.Get(@"UI/tabselect-select");
         }
 
         protected override void LoadComplete()
@@ -71,6 +77,8 @@ namespace osu.Game.Overlays.BeatmapListing
 
         protected override void OnDeactivated() => UpdateState();
 
+        protected override void OnActivatedByUser() => SelectSample.Play();
+
         /// <summary>
         /// Returns the label text to be used for the supplied <paramref name="value"/>.
         /// </summary>

osu.Game/Overlays/BeatmapSet/BeatmapRulesetSelector.cs

@@ -21,7 +21,7 @@ namespace osu.Game.Overlays.BeatmapSet
                 // propagate value to tab items first to enable only available rulesets.
                 beatmapSet.Value = value;
 
-                SelectTab(TabContainer.TabItems.FirstOrDefault(t => t.Enabled.Value));
+                Current.Value = TabContainer.TabItems.FirstOrDefault(t => t.Enabled.Value)?.Value;
             }
         }
 

osu.Game/Overlays/Comments/ReplyCommentEditor.cs

@@ -39,7 +39,7 @@ namespace osu.Game.Overlays.Comments
             base.LoadComplete();
 
             if (!TextBox.ReadOnly)
-                GetContainingInputManager().ChangeFocus(TextBox);
+                GetContainingFocusManager().ChangeFocus(TextBox);
         }
 
         protected override void OnCommit(string text)

osu.Game/Overlays/Login/LoginForm.cs

@@ -150,7 +150,7 @@ namespace osu.Game.Overlays.Login
 
         protected override void OnFocus(FocusEvent e)
         {
-            Schedule(() => { GetContainingInputManager().ChangeFocus(string.IsNullOrEmpty(username.Text) ? username : password); });
+            Schedule(() => { GetContainingFocusManager().ChangeFocus(string.IsNullOrEmpty(username.Text) ? username : password); });
         }
     }
 }

osu.Game/Overlays/Login/LoginPanel.cs

@@ -186,7 +186,7 @@ namespace osu.Game.Overlays.Login
             }
 
             if (form != null)
-                ScheduleAfterChildren(() => GetContainingInputManager()?.ChangeFocus(form));
+                ScheduleAfterChildren(() => GetContainingFocusManager()?.ChangeFocus(form));
         });
 
         private void updateDropdownCurrent(UserStatus? status)
@@ -216,7 +216,7 @@ namespace osu.Game.Overlays.Login
 
         protected override void OnFocus(FocusEvent e)
         {
-            if (form != null) GetContainingInputManager().ChangeFocus(form);
+            if (form != null) GetContainingFocusManager().ChangeFocus(form);
             base.OnFocus(e);
         }
     }

osu.Game/Overlays/Login/SecondFactorAuthForm.cs

@@ -141,7 +141,7 @@ namespace osu.Game.Overlays.Login
 
         protected override void OnFocus(FocusEvent e)
         {
-            Schedule(() => { GetContainingInputManager().ChangeFocus(codeTextBox); });
+            Schedule(() => { GetContainingFocusManager().ChangeFocus(codeTextBox); });
         }
     }
 }

osu.Game/Overlays/LoginOverlay.cs

@@ -78,7 +78,7 @@ namespace osu.Game.Overlays
             this.FadeIn(transition_time, Easing.OutQuint);
             FadeEdgeEffectTo(WaveContainer.SHADOW_OPACITY, WaveContainer.APPEAR_DURATION, Easing.Out);
 
-            ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(panel));
+            ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(panel));
         }
 
         protected override void PopOut()

osu.Game/Overlays/Mods/AddPresetPopover.cs

@@ -89,7 +89,7 @@ namespace osu.Game.Overlays.Mods
         {
             base.LoadComplete();
 
-            ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(nameTextBox));
+            ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(nameTextBox));
 
             nameTextBox.Current.BindValueChanged(s =>
             {

osu.Game/Overlays/Mods/EditPresetPopover.cs

@@ -136,7 +136,7 @@ namespace osu.Game.Overlays.Mods
         {
             base.LoadComplete();
 
-            ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(nameTextBox));
+            ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(nameTextBox));
         }
 
         public override bool OnPressed(KeyBindingPressEvent<GlobalAction> e)

osu.Game/Overlays/Mods/ModSelectOverlay.cs

@@ -949,7 +949,7 @@ namespace osu.Game.Overlays.Mods
                     RequestScroll?.Invoke(this);
 
                 // Killing focus is done here because it's the only feasible place on ModSelectOverlay you can click on without triggering any action.
-                Scheduler.Add(() => GetContainingInputManager().ChangeFocus(null));
+                Scheduler.Add(() => GetContainingFocusManager().ChangeFocus(null));
 
                 return true;
             }

osu.Game/Overlays/OverlayPanelDisplayStyleControl.cs

@@ -11,6 +11,8 @@ using osuTK;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.UserInterface;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osuTK.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Localisation;
@@ -65,6 +67,8 @@ namespace osu.Game.Overlays
 
             private readonly SpriteIcon icon;
 
+            private Sample selectSample = null!;
+
             public PanelDisplayTabItem(OverlayPanelDisplayStyle value)
                 : base(value)
             {
@@ -78,14 +82,22 @@ namespace osu.Game.Overlays
                         RelativeSizeAxes = Axes.Both,
                         FillMode = FillMode.Fit
                     },
-                    new HoverClickSounds()
+                    new HoverSounds(HoverSampleSet.TabSelect)
                 });
             }
 
+            [BackgroundDependencyLoader]
+            private void load(AudioManager audio)
+            {
+                selectSample = audio.Samples.Get(@"UI/tabselect-select");
+            }
+
             protected override void OnActivated() => updateState();
 
             protected override void OnDeactivated() => updateState();
 
+            protected override void OnActivatedByUser() => selectSample.Play();
+
             protected override bool OnHover(HoverEvent e)
             {
                 updateState();

osu.Game/Overlays/OverlayRulesetTabItem.cs

@@ -10,6 +10,8 @@ using osu.Game.Rulesets;
 using osuTK.Graphics;
 using osuTK;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
@@ -39,6 +41,8 @@ namespace osu.Game.Overlays
 
         public LocalisableString TooltipText => Value.Name;
 
+        private Sample selectSample = null!;
+
         public OverlayRulesetTabItem(RulesetInfo value)
             : base(value)
         {
@@ -59,12 +63,18 @@ namespace osu.Game.Overlays
                         Icon = value.CreateInstance().CreateIcon(),
                     },
                 },
-                new HoverClickSounds()
+                new HoverSounds(HoverSampleSet.TabSelect)
             });
 
             Enabled.Value = true;
         }
 
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            selectSample = audio.Samples.Get(@"UI/tabselect-select");
+        }
+
         protected override void LoadComplete()
         {
             base.LoadComplete();
@@ -90,6 +100,8 @@ namespace osu.Game.Overlays
 
         protected override void OnDeactivated() => updateState();
 
+        protected override void OnActivatedByUser() => selectSample.Play();
+
         private void updateState()
         {
             AccentColour = Enabled.Value ? getActiveColour() : colourProvider.Foreground1;

osu.Game/Overlays/OverlayStreamItem.cs

@@ -11,6 +11,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics;
 using osuTK.Graphics;
@@ -49,8 +51,10 @@ namespace osu.Game.Overlays
             Margin = new MarginPadding(PADDING);
         }
 
+        private Sample selectSample;
+
         [BackgroundDependencyLoader]
-        private void load(OverlayColourProvider colourProvider, OsuColour colours)
+        private void load(OverlayColourProvider colourProvider, OsuColour colours, AudioManager audio)
         {
             AddRange(new Drawable[]
             {
@@ -87,9 +91,11 @@ namespace osu.Game.Overlays
                     CollapsedSize = 2,
                     Expanded = true
                 },
-                new HoverClickSounds()
+                new HoverSounds(HoverSampleSet.TabSelect)
             });
 
+            selectSample = audio.Samples.Get(@"UI/tabselect-select");
+
             SelectedItem.BindValueChanged(_ => updateState(), true);
         }
 
@@ -105,6 +111,8 @@ namespace osu.Game.Overlays
 
         protected override void OnDeactivated() => updateState();
 
+        protected override void OnActivatedByUser() => selectSample.Play();
+
         protected override bool OnHover(HoverEvent e)
         {
             updateState();

osu.Game/Overlays/OverlayTabControl.cs

@@ -4,6 +4,8 @@
 #nullable disable
 
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
@@ -80,6 +82,8 @@ namespace osu.Game.Overlays
                 }
             }
 
+            private Sample selectSample = null!;
+
             public OverlayTabItem(T value)
                 : base(value)
             {
@@ -101,10 +105,16 @@ namespace osu.Game.Overlays
                         ExpandedSize = 5f,
                         CollapsedSize = 0
                     },
-                    new HoverClickSounds(HoverSampleSet.TabSelect)
+                    new HoverSounds(HoverSampleSet.TabSelect)
                 };
             }
 
+            [BackgroundDependencyLoader]
+            private void load(AudioManager audio)
+            {
+                selectSample = audio.Samples.Get(@"UI/tabselect-select");
+            }
+
             protected override bool OnHover(HoverEvent e)
             {
                 base.OnHover(e);
@@ -136,6 +146,8 @@ namespace osu.Game.Overlays
                 Text.Font = Text.Font.With(weight: FontWeight.Medium);
             }
 
+            protected override void OnActivatedByUser() => selectSample.Play();
+
             private void updateState()
             {
                 if (Active.Value)

osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs

@@ -465,7 +465,7 @@ namespace osu.Game.Overlays.Settings.Sections.Input
             }
 
             if (HasFocus)
-                GetContainingInputManager().ChangeFocus(null);
+                GetContainingFocusManager().ChangeFocus(null);
 
             cancelAndClearButtons.FadeOut(300, Easing.OutQuint);
             cancelAndClearButtons.BypassAutoSizeAxes |= Axes.Y;

osu.Game/Overlays/Settings/Sections/Input/KeyBindingsSubsection.cs

@@ -106,7 +106,7 @@ namespace osu.Game.Overlays.Settings.Sections.Input
             {
                 var next = Children.SkipWhile(c => c != sender).Skip(1).FirstOrDefault();
                 if (next != null)
-                    GetContainingInputManager().ChangeFocus(next);
+                    GetContainingFocusManager().ChangeFocus(next);
             }
         }
     }

osu.Game/Overlays/Settings/Sections/SizeSlider.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using System.Globalization;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
@@ -12,7 +13,7 @@ namespace osu.Game.Overlays.Settings.Sections
     /// A slider intended to show a "size" multiplier number, where 1x is 1.0.
     /// </summary>
     public partial class SizeSlider<T> : RoundedSliderBar<T>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible, IFormattable
+        where T : struct, INumber<T>, IMinMaxValue<T>, IFormattable
     {
         public override LocalisableString TooltipText => Current.Value.ToString(@"0.##x", NumberFormatInfo.CurrentInfo);
     }

osu.Game/Overlays/Settings/SettingsPercentageSlider.cs

@@ -1,7 +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.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
@@ -13,7 +13,7 @@ namespace osu.Game.Overlays.Settings
     /// Mostly provided for convenience of use with <see cref="SettingSourceAttribute"/>.
     /// </summary>
     public partial class SettingsPercentageSlider<TValue> : SettingsSlider<TValue>
-        where TValue : struct, IEquatable<TValue>, IComparable<TValue>, IConvertible
+        where TValue : struct, INumber<TValue>, IMinMaxValue<TValue>
     {
         protected override Drawable CreateControl() => ((RoundedSliderBar<TValue>)base.CreateControl()).With(sliderBar => sliderBar.DisplayAsPercentage = true);
     }

osu.Game/Overlays/Settings/SettingsSlider.cs

@@ -1,7 +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.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
@@ -9,12 +9,12 @@ using osu.Game.Graphics.UserInterface;
 namespace osu.Game.Overlays.Settings
 {
     public partial class SettingsSlider<T> : SettingsSlider<T, RoundedSliderBar<T>>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
     }
 
     public partial class SettingsSlider<TValue, TSlider> : SettingsItem<TValue>
-        where TValue : struct, IEquatable<TValue>, IComparable<TValue>, IConvertible
+        where TValue : struct, INumber<TValue>, IMinMaxValue<TValue>
         where TSlider : RoundedSliderBar<TValue>, new()
     {
         protected override Drawable CreateControl() => new TSlider

osu.Game/Overlays/SettingsPanel.cs

@@ -201,7 +201,7 @@ namespace osu.Game.Overlays
 
             searchTextBox.HoldFocus = false;
             if (searchTextBox.HasFocus)
-                GetContainingInputManager().ChangeFocus(null);
+                GetContainingFocusManager().ChangeFocus(null);
         }
 
         public override bool AcceptsFocus => true;

osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs

@@ -8,10 +8,8 @@ using osu.Framework.Allocation;
 using osu.Framework.Extensions;
 using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.UserInterface;
-using osu.Framework.Utils;
 using osu.Game.Extensions;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Edit;
@@ -34,148 +32,16 @@ namespace osu.Game.Overlays.SkinEditor
             UpdatePosition = updateDrawablePosition
         };
 
-        private bool allSelectedSupportManualSizing(Axes axis) => SelectedItems.All(b => (b as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(axis) == false);
+        public override SelectionScaleHandler CreateScaleHandler()
-
-        public override bool HandleScale(Vector2 scale, Anchor anchor)
         {
-            Axes adjustAxis;
+            var scaleHandler = new SkinSelectionScaleHandler
-
-            switch (anchor)
             {
-                // for corners, adjust scale.
+                UpdatePosition = updateDrawablePosition
-                case Anchor.TopLeft:
+            };
-                case Anchor.TopRight:
-                case Anchor.BottomLeft:
-                case Anchor.BottomRight:
-                    adjustAxis = Axes.Both;
-                    break;
 
-                // for edges, adjust size.
+            scaleHandler.PerformFlipFromScaleHandles += a => SelectionBox.PerformFlipFromScaleHandles(a);
-                // autosize elements can't be easily handled so just disable sizing for now.
-                case Anchor.TopCentre:
-                case Anchor.BottomCentre:
-                    if (!allSelectedSupportManualSizing(Axes.Y))
-                        return false;
 
-                    adjustAxis = Axes.Y;
+            return scaleHandler;
-                    break;
-
-                case Anchor.CentreLeft:
-                case Anchor.CentreRight:
-                    if (!allSelectedSupportManualSizing(Axes.X))
-                        return false;
-
-                    adjustAxis = Axes.X;
-                    break;
-
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(anchor), anchor, null);
-            }
-
-            // convert scale to screen space
-            scale = ToScreenSpace(scale) - ToScreenSpace(Vector2.Zero);
-
-            adjustScaleFromAnchor(ref scale, anchor);
-
-            // the selection quad is always upright, so use an AABB rect to make mutating the values easier.
-            var selectionRect = getSelectionQuad().AABBFloat;
-
-            // If the selection has no area we cannot scale it
-            if (selectionRect.Area == 0)
-                return false;
-
-            // copy to mutate, as we will need to compare to the original later on.
-            var adjustedRect = selectionRect;
-            bool isRotated = false;
-
-            // for now aspect lock scale adjustments that occur at corners..
-            if (!anchor.HasFlagFast(Anchor.x1) && !anchor.HasFlagFast(Anchor.y1))
-            {
-                // project scale vector along diagonal
-                Vector2 diag = (selectionRect.TopLeft - selectionRect.BottomRight).Normalized();
-                scale = Vector2.Dot(scale, diag) * diag;
-            }
-            // ..or if any of the selection have been rotated.
-            // this is to avoid requiring skew logic (which would likely not be the user's expected transform anyway).
-            else if (SelectedBlueprints.Any(b => !Precision.AlmostEquals(((Drawable)b.Item).Rotation % 90, 0)))
-            {
-                isRotated = true;
-                if (anchor.HasFlagFast(Anchor.x1))
-                    // if dragging from the horizontal centre, only a vertical component is available.
-                    scale.X = scale.Y / selectionRect.Height * selectionRect.Width;
-                else
-                    // in all other cases (arbitrarily) use the horizontal component for aspect lock.
-                    scale.Y = scale.X / selectionRect.Width * selectionRect.Height;
-            }
-
-            if (anchor.HasFlagFast(Anchor.x0)) adjustedRect.X -= scale.X;
-            if (anchor.HasFlagFast(Anchor.y0)) adjustedRect.Y -= scale.Y;
-
-            // Maintain the selection's centre position if dragging from the centre anchors and selection is rotated.
-            if (isRotated && anchor.HasFlagFast(Anchor.x1)) adjustedRect.X -= scale.X / 2;
-            if (isRotated && anchor.HasFlagFast(Anchor.y1)) adjustedRect.Y -= scale.Y / 2;
-
-            adjustedRect.Width += scale.X;
-            adjustedRect.Height += scale.Y;
-
-            if (adjustedRect.Width <= 0 || adjustedRect.Height <= 0)
-            {
-                Axes toFlip = Axes.None;
-
-                if (adjustedRect.Width <= 0) toFlip |= Axes.X;
-                if (adjustedRect.Height <= 0) toFlip |= Axes.Y;
-
-                SelectionBox.PerformFlipFromScaleHandles(toFlip);
-                return true;
-            }
-
-            // scale adjust applied to each individual item should match that of the quad itself.
-            var scaledDelta = new Vector2(
-                adjustedRect.Width / selectionRect.Width,
-                adjustedRect.Height / selectionRect.Height
-            );
-
-            foreach (var b in SelectedBlueprints)
-            {
-                var drawableItem = (Drawable)b.Item;
-
-                // each drawable's relative position should be maintained in the scaled quad.
-                var screenPosition = drawableItem.ToScreenSpace(drawableItem.OriginPosition);
-
-                var relativePositionInOriginal =
-                    new Vector2(
-                        (screenPosition.X - selectionRect.TopLeft.X) / selectionRect.Width,
-                        (screenPosition.Y - selectionRect.TopLeft.Y) / selectionRect.Height
-                    );
-
-                var newPositionInAdjusted = new Vector2(
-                    adjustedRect.TopLeft.X + adjustedRect.Width * relativePositionInOriginal.X,
-                    adjustedRect.TopLeft.Y + adjustedRect.Height * relativePositionInOriginal.Y
-                );
-
-                updateDrawablePosition(drawableItem, newPositionInAdjusted);
-
-                var currentScaledDelta = scaledDelta;
-                if (Precision.AlmostEquals(MathF.Abs(drawableItem.Rotation) % 180, 90))
-                    currentScaledDelta = new Vector2(scaledDelta.Y, scaledDelta.X);
-
-                switch (adjustAxis)
-                {
-                    case Axes.X:
-                        drawableItem.Width *= currentScaledDelta.X;
-                        break;
-
-                    case Axes.Y:
-                        drawableItem.Height *= currentScaledDelta.Y;
-                        break;
-
-                    case Axes.Both:
-                        drawableItem.Scale *= currentScaledDelta;
-                        break;
-                }
-            }
-
-            return true;
         }
 
         public override bool HandleFlip(Direction direction, bool flipOverOrigin)
@@ -226,9 +92,6 @@ namespace osu.Game.Overlays.SkinEditor
         {
             base.OnSelectionChanged();
 
-            SelectionBox.CanScaleX = allSelectedSupportManualSizing(Axes.X);
-            SelectionBox.CanScaleY = allSelectedSupportManualSizing(Axes.Y);
-            SelectionBox.CanScaleDiagonally = true;
             SelectionBox.CanFlipX = true;
             SelectionBox.CanFlipY = true;
             SelectionBox.CanReverse = false;
@@ -460,16 +323,5 @@ namespace osu.Game.Overlays.SkinEditor
             drawable.Origin = localOrigin;
             drawable.Position += offset;
         }
-
-        private static void adjustScaleFromAnchor(ref Vector2 scale, Anchor reference)
-        {
-            // cancel out scale in axes we don't care about (based on which drag handle was used).
-            if ((reference & Anchor.x1) > 0) scale.X = 0;
-            if ((reference & Anchor.y1) > 0) scale.Y = 0;
-
-            // reverse the scale direction if dragging from top or left.
-            if ((reference & Anchor.x0) > 0) scale.X = -scale.X;
-            if ((reference & Anchor.y0) > 0) scale.Y = -scale.Y;
-        }
     }
 }

osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs

@@ -0,0 +1,178 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions.EnumExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Utils;
+using osu.Game.Screens.Edit;
+using osu.Game.Screens.Edit.Compose.Components;
+using osu.Game.Skinning;
+using osu.Game.Utils;
+using osuTK;
+
+namespace osu.Game.Overlays.SkinEditor
+{
+    public partial class SkinSelectionScaleHandler : SelectionScaleHandler
+    {
+        public Action<Drawable, Vector2> UpdatePosition { get; init; } = null!;
+
+        public event Action<Axes>? PerformFlipFromScaleHandles;
+
+        [Resolved]
+        private IEditorChangeHandler? changeHandler { get; set; }
+
+        private BindableList<ISerialisableDrawable> selectedItems { get; } = new BindableList<ISerialisableDrawable>();
+
+        [BackgroundDependencyLoader]
+        private void load(SkinEditor skinEditor)
+        {
+            selectedItems.BindTo(skinEditor.SelectedComponents);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            selectedItems.CollectionChanged += (_, __) => updateState();
+            updateState();
+        }
+
+        private void updateState()
+        {
+            CanScaleX.Value = allSelectedSupportManualSizing(Axes.X);
+            CanScaleY.Value = allSelectedSupportManualSizing(Axes.Y);
+            CanScaleDiagonally.Value = true;
+        }
+
+        private bool allSelectedSupportManualSizing(Axes axis) => selectedItems.All(b => (b as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(axis) == false);
+
+        private Dictionary<Drawable, OriginalDrawableState>? objectsInScale;
+        private Vector2? defaultOrigin;
+
+        private bool isFlippedX;
+        private bool isFlippedY;
+
+        public override void Begin()
+        {
+            if (objectsInScale != null)
+                throw new InvalidOperationException($"Cannot {nameof(Begin)} a scale operation while another is in progress!");
+
+            changeHandler?.BeginChange();
+
+            objectsInScale = selectedItems.Cast<Drawable>().ToDictionary(d => d, d => new OriginalDrawableState(d));
+            OriginalSurroundingQuad = ToLocalSpace(GeometryUtils.GetSurroundingQuad(objectsInScale.SelectMany(d => d.Key.ScreenSpaceDrawQuad.GetVertices().ToArray())));
+            defaultOrigin = OriginalSurroundingQuad.Value.Centre;
+
+            isFlippedX = false;
+            isFlippedY = false;
+        }
+
+        public override void Update(Vector2 scale, Vector2? origin = null, Axes adjustAxis = Axes.Both)
+        {
+            if (objectsInScale == null)
+                throw new InvalidOperationException($"Cannot {nameof(Update)} a scale operation without calling {nameof(Begin)} first!");
+
+            Debug.Assert(defaultOrigin != null && OriginalSurroundingQuad != null);
+
+            var actualOrigin = ToScreenSpace(origin ?? defaultOrigin.Value);
+
+            if ((adjustAxis == Axes.Y && !allSelectedSupportManualSizing(Axes.Y)) ||
+                (adjustAxis == Axes.X && !allSelectedSupportManualSizing(Axes.X)))
+                return;
+
+            // If the selection has no area we cannot scale it
+            if (OriginalSurroundingQuad.Value.Width == 0 || OriginalSurroundingQuad.Value.Height == 0)
+                return;
+
+            // for now aspect lock scale adjustments that occur at corners.
+            if (adjustAxis == Axes.Both)
+            {
+                // project scale vector along diagonal
+                scale = new Vector2((scale.X + scale.Y) * 0.5f);
+            }
+            // If any of the selection have been rotated and the adjust axis is not both,
+            // we would require skew logic to achieve a correct image editor-like scale.
+            // For now we just ignore, because it would likely not be the user's expected transform anyway.
+
+            bool flippedX = scale.X < 0;
+            bool flippedY = scale.Y < 0;
+            Axes toFlip = Axes.None;
+
+            if (flippedX != isFlippedX)
+            {
+                isFlippedX = flippedX;
+                toFlip |= Axes.X;
+            }
+
+            if (flippedY != isFlippedY)
+            {
+                isFlippedY = flippedY;
+                toFlip |= Axes.Y;
+            }
+
+            if (toFlip != Axes.None)
+            {
+                PerformFlipFromScaleHandles?.Invoke(toFlip);
+                return;
+            }
+
+            foreach (var (b, originalState) in objectsInScale)
+            {
+                UpdatePosition(b, GeometryUtils.GetScaledPosition(scale, actualOrigin, originalState.ScreenSpaceOriginPosition));
+
+                var currentScale = scale;
+                if (Precision.AlmostEquals(MathF.Abs(b.Rotation) % 180, 90))
+                    currentScale = new Vector2(scale.Y, scale.X);
+
+                switch (adjustAxis)
+                {
+                    case Axes.X:
+                        b.Width = MathF.Abs(originalState.Width * currentScale.X);
+                        break;
+
+                    case Axes.Y:
+                        b.Height = MathF.Abs(originalState.Height * currentScale.Y);
+                        break;
+
+                    case Axes.Both:
+                        b.Scale = originalState.Scale * currentScale;
+                        break;
+                }
+            }
+        }
+
+        public override void Commit()
+        {
+            if (objectsInScale == null)
+                throw new InvalidOperationException($"Cannot {nameof(Commit)} a scale operation without calling {nameof(Begin)} first!");
+
+            changeHandler?.EndChange();
+
+            objectsInScale = null;
+            defaultOrigin = null;
+        }
+
+        private struct OriginalDrawableState
+        {
+            public float Width { get; }
+            public float Height { get; }
+            public Vector2 Scale { get; }
+            public Vector2 ScreenSpaceOriginPosition { get; }
+
+            public OriginalDrawableState(Drawable drawable)
+            {
+                Width = drawable.Width;
+                Height = drawable.Height;
+                Scale = drawable.Scale;
+                ScreenSpaceOriginPosition = drawable.ToScreenSpace(drawable.OriginPosition);
+            }
+        }
+    }
+}

osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs

@@ -3,11 +3,8 @@
 
 #nullable disable
 
-using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Audio;
-using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -24,8 +21,6 @@ namespace osu.Game.Overlays.Toolbar
     {
         protected Drawable ModeButtonLine { get; private set; }
 
-        private readonly Dictionary<string, Sample> selectionSamples = new Dictionary<string, Sample>();
-
         public ToolbarRulesetSelector()
         {
             RelativeSizeAxes = Axes.Y;
@@ -33,7 +28,7 @@ namespace osu.Game.Overlays.Toolbar
         }
 
         [BackgroundDependencyLoader]
-        private void load(AudioManager audio)
+        private void load()
         {
             AddRangeInternal(new[]
             {
@@ -59,9 +54,6 @@ namespace osu.Game.Overlays.Toolbar
                     }
                 },
             });
-
-            foreach (var ruleset in Rulesets.AvailableRulesets)
-                selectionSamples[ruleset.ShortName] = audio.Samples.Get($"UI/ruleset-select-{ruleset.ShortName}");
         }
 
         protected override void LoadComplete()
@@ -88,10 +80,6 @@ namespace osu.Game.Overlays.Toolbar
             if (SelectedTab != null)
             {
                 ModeButtonLine.MoveToX(SelectedTab.DrawPosition.X, !hasInitialPosition ? 0 : 500, Easing.OutElasticQuarter);
-
-                if (hasInitialPosition)
-                    selectionSamples[SelectedTab.Value.ShortName]?.Play();
-
                 hasInitialPosition = true;
             }
         }
@@ -121,7 +109,7 @@ namespace osu.Game.Overlays.Toolbar
 
                 RulesetInfo found = Rulesets.AvailableRulesets.ElementAtOrDefault(requested);
                 if (found != null)
-                    Current.Value = found;
+                    SelectItem(found);
                 return true;
             }
 

osu.Game/Overlays/Toolbar/ToolbarRulesetTabButton.cs

@@ -2,6 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
@@ -17,6 +19,8 @@ namespace osu.Game.Overlays.Toolbar
     {
         private readonly RulesetButton ruleset;
 
+        private Sample? selectSample;
+
         public ToolbarRulesetTabButton(RulesetInfo value)
             : base(value)
         {
@@ -34,10 +38,18 @@ namespace osu.Game.Overlays.Toolbar
             ruleset.SetIcon(rInstance.CreateIcon());
         }
 
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            selectSample = audio.Samples.Get($@"UI/ruleset-select-{Value.ShortName}");
+        }
+
         protected override void OnActivated() => ruleset.Active = true;
 
         protected override void OnDeactivated() => ruleset.Active = false;
 
+        protected override void OnActivatedByUser() => selectSample?.Play();
+
         private partial class RulesetButton : ToolbarButton
         {
             protected override HoverSounds CreateHoverSounds(HoverSampleSet sampleSet) => new HoverSounds();

osu.Game/Rulesets/Mods/DifficultyBindable.cs

@@ -48,7 +48,7 @@ namespace osu.Game.Rulesets.Mods
             }
         }
 
-        private float maxValue;
+        private float maxValue = 10; // matches default max value of `CurrentNumber`
 
         public float MaxValue
         {

osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs

@@ -15,7 +15,6 @@ using osu.Framework.Extensions.ListExtensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Extensions.TypeExtensions;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Primitives;
 using osu.Framework.Lists;
 using osu.Framework.Threading;
 using osu.Framework.Utils;
@@ -632,7 +631,7 @@ namespace osu.Game.Rulesets.Objects.Drawables
 
         #endregion
 
-        public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => false;
+        public override bool UpdateSubTreeMasking() => false;
 
         protected override void UpdateAfterChildren()
         {

osu.Game/Rulesets/Scoring/LegacyDrainingHealthProcessor.cs

@@ -129,6 +129,13 @@ namespace osu.Game.Rulesets.Scoring
                     OnIterationFail?.Invoke($"FAILED drop {testDrop}: recovery too low ({recovery} < {hpRecoveryAvailable})");
                 }
 
+                if (!fail && double.IsInfinity(HpMultiplierNormal))
+                {
+                    OnIterationSuccess?.Invoke("Drain computation algorithm diverged to infinity. PASSING with zero drop, resetting HP multiplier to 1.");
+                    HpMultiplierNormal = 1;
+                    return 0;
+                }
+
                 if (!fail)
                 {
                     OnIterationSuccess?.Invoke($"PASSED drop {testDrop}");

osu.Game/Rulesets/UI/FrameStabilityContainer.cs

@@ -119,7 +119,7 @@ namespace osu.Game.Rulesets.UI
                     break;
 
                 base.UpdateSubTree();
-                UpdateSubTreeMasking(this, ScreenSpaceDrawQuad.AABBFloat);
+                UpdateSubTreeMasking();
             } while (state == PlaybackState.RequiresCatchUp && stopwatch.ElapsedMilliseconds < max_catchup_milliseconds);
 
             return true;

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

@@ -580,7 +580,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
             {
                 base.LoadComplete();
 
-                GetContainingInputManager().ChangeFocus(this);
+                GetContainingFocusManager().ChangeFocus(this);
                 SelectAll();
             }
         }

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

@@ -27,7 +27,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
         [Resolved]
         private SelectionRotationHandler? rotationHandler { get; set; }
 
-        public Func<Vector2, Anchor, bool>? OnScale;
+        [Resolved]
+        private SelectionScaleHandler? scaleHandler { get; set; }
+
         public Func<Direction, bool, bool>? OnFlip;
         public Func<bool>? OnReverse;
 
@@ -57,60 +59,11 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         private readonly IBindable<bool> canRotate = new BindableBool();
 
-        private bool canScaleX;
+        private readonly IBindable<bool> canScaleX = new BindableBool();
 
-        /// <summary>
+        private readonly IBindable<bool> canScaleY = new BindableBool();
-        /// Whether horizontal scaling (from the left or right edge) support should be enabled.
-        /// </summary>
-        public bool CanScaleX
-        {
-            get => canScaleX;
-            set
-            {
-                if (canScaleX == value) return;
 
-                canScaleX = value;
+        private readonly IBindable<bool> canScaleDiagonally = new BindableBool();
-                recreate();
-            }
-        }
-
-        private bool canScaleY;
-
-        /// <summary>
-        /// Whether vertical scaling (from the top or bottom edge) support should be enabled.
-        /// </summary>
-        public bool CanScaleY
-        {
-            get => canScaleY;
-            set
-            {
-                if (canScaleY == value) return;
-
-                canScaleY = value;
-                recreate();
-            }
-        }
-
-        private bool canScaleDiagonally;
-
-        /// <summary>
-        /// Whether diagonal scaling (from a corner) support should be enabled.
-        /// </summary>
-        /// <remarks>
-        /// There are some cases where we only want to allow proportional resizing, and not allow
-        /// one or both explicit directions of scale.
-        /// </remarks>
-        public bool CanScaleDiagonally
-        {
-            get => canScaleDiagonally;
-            set
-            {
-                if (canScaleDiagonally == value) return;
-
-                canScaleDiagonally = value;
-                recreate();
-            }
-        }
 
         private bool canFlipX;
 
@@ -176,7 +129,17 @@ namespace osu.Game.Screens.Edit.Compose.Components
             if (rotationHandler != null)
                 canRotate.BindTo(rotationHandler.CanRotateSelectionOrigin);
 
-            canRotate.BindValueChanged(_ => recreate(), true);
+            if (scaleHandler != null)
+            {
+                canScaleX.BindTo(scaleHandler.CanScaleX);
+                canScaleY.BindTo(scaleHandler.CanScaleY);
+                canScaleDiagonally.BindTo(scaleHandler.CanScaleDiagonally);
+            }
+
+            canRotate.BindValueChanged(_ => recreate());
+            canScaleX.BindValueChanged(_ => recreate());
+            canScaleY.BindValueChanged(_ => recreate());
+            canScaleDiagonally.BindValueChanged(_ => recreate(), true);
         }
 
         protected override bool OnKeyDown(KeyDownEvent e)
@@ -265,9 +228,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
                 }
             };
 
-            if (CanScaleX) addXScaleComponents();
+            if (canScaleX.Value) addXScaleComponents();
-            if (CanScaleDiagonally) addFullScaleComponents();
+            if (canScaleDiagonally.Value) addFullScaleComponents();
-            if (CanScaleY) addYScaleComponents();
+            if (canScaleY.Value) addYScaleComponents();
             if (CanFlipX) addXFlipComponents();
             if (CanFlipY) addYFlipComponents();
             if (canRotate.Value) addRotationComponents();
@@ -353,7 +316,6 @@ namespace osu.Game.Screens.Edit.Compose.Components
             var handle = new SelectionBoxScaleHandle
             {
                 Anchor = anchor,
-                HandleScale = (delta, a) => OnScale?.Invoke(delta, a)
             };
 
             handle.OperationStarted += operationStarted;

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

@@ -1,19 +1,21 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
-using System;
 using osu.Framework.Allocation;
+using osu.Framework.Extensions;
+using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
+using osu.Framework.Utils;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
     public partial class SelectionBoxScaleHandle : SelectionBoxDragHandle
     {
-        public Action<Vector2, Anchor> HandleScale { get; set; }
+        [Resolved]
+        private SelectionScaleHandler? scaleHandler { get; set; }
 
         [BackgroundDependencyLoader]
         private void load()
@@ -21,10 +23,108 @@ namespace osu.Game.Screens.Edit.Compose.Components
             Size = new Vector2(10);
         }
 
+        private Anchor originalAnchor;
+
+        protected override bool OnDragStart(DragStartEvent e)
+        {
+            if (e.Button != MouseButton.Left)
+                return false;
+
+            if (scaleHandler == null) return false;
+
+            originalAnchor = Anchor;
+
+            scaleHandler.Begin();
+            return true;
+        }
+
+        private Vector2 rawScale;
+
         protected override void OnDrag(DragEvent e)
         {
-            HandleScale?.Invoke(e.Delta, Anchor);
             base.OnDrag(e);
+
+            if (scaleHandler == null) return;
+
+            rawScale = convertDragEventToScaleMultiplier(e);
+
+            applyScale(shouldLockAspectRatio: isCornerAnchor(originalAnchor) && e.ShiftPressed);
         }
+
+        protected override bool OnKeyDown(KeyDownEvent e)
+        {
+            if (IsDragged)
+            {
+                applyScale(shouldLockAspectRatio: isCornerAnchor(originalAnchor) && e.ShiftPressed);
+                return true;
+            }
+
+            return base.OnKeyDown(e);
+        }
+
+        protected override void OnKeyUp(KeyUpEvent e)
+        {
+            base.OnKeyUp(e);
+
+            if (IsDragged)
+                applyScale(shouldLockAspectRatio: isCornerAnchor(originalAnchor) && e.ShiftPressed);
+        }
+
+        protected override void OnDragEnd(DragEndEvent e)
+        {
+            scaleHandler?.Commit();
+        }
+
+        private Vector2 convertDragEventToScaleMultiplier(DragEvent e)
+        {
+            Vector2 scale = e.MousePosition - e.MouseDownPosition;
+            adjustScaleFromAnchor(ref scale);
+
+            var surroundingQuad = scaleHandler!.OriginalSurroundingQuad!.Value;
+            scale.X = Precision.AlmostEquals(surroundingQuad.Width, 0) ? 0 : scale.X / surroundingQuad.Width;
+            scale.Y = Precision.AlmostEquals(surroundingQuad.Height, 0) ? 0 : scale.Y / surroundingQuad.Height;
+
+            return scale + Vector2.One;
+        }
+
+        private void adjustScaleFromAnchor(ref Vector2 scale)
+        {
+            // cancel out scale in axes we don't care about (based on which drag handle was used).
+            if ((originalAnchor & Anchor.x1) > 0) scale.X = 0;
+            if ((originalAnchor & Anchor.y1) > 0) scale.Y = 0;
+
+            // reverse the scale direction if dragging from top or left.
+            if ((originalAnchor & Anchor.x0) > 0) scale.X = -scale.X;
+            if ((originalAnchor & Anchor.y0) > 0) scale.Y = -scale.Y;
+        }
+
+        private void applyScale(bool shouldLockAspectRatio)
+        {
+            var newScale = shouldLockAspectRatio
+                ? new Vector2((rawScale.X + rawScale.Y) * 0.5f)
+                : rawScale;
+
+            var scaleOrigin = originalAnchor.Opposite().PositionOnQuad(scaleHandler!.OriginalSurroundingQuad!.Value);
+            scaleHandler!.Update(newScale, scaleOrigin, getAdjustAxis());
+        }
+
+        private Axes getAdjustAxis()
+        {
+            switch (originalAnchor)
+            {
+                case Anchor.TopCentre:
+                case Anchor.BottomCentre:
+                    return Axes.Y;
+
+                case Anchor.CentreLeft:
+                case Anchor.CentreRight:
+                    return Axes.X;
+
+                default:
+                    return Axes.Both;
+            }
+        }
+
+        private bool isCornerAnchor(Anchor anchor) => !anchor.HasFlagFast(Anchor.x1) && !anchor.HasFlagFast(Anchor.y1);
     }
 }

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

@@ -57,6 +57,8 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         public SelectionRotationHandler RotationHandler { get; private set; }
 
+        public SelectionScaleHandler ScaleHandler { get; private set; }
+
         protected SelectionHandler()
         {
             selectedBlueprints = new List<SelectionBlueprint<T>>();
@@ -69,6 +71,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
         {
             var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs(RotationHandler = CreateRotationHandler());
+            dependencies.CacheAs(ScaleHandler = CreateScaleHandler());
             return dependencies;
         }
 
@@ -78,6 +81,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
             AddRangeInternal(new Drawable[]
             {
                 RotationHandler,
+                ScaleHandler,
                 SelectionBox = CreateSelectionBox(),
             });
 
@@ -93,7 +97,6 @@ namespace osu.Game.Screens.Edit.Compose.Components
                 OperationStarted = OnOperationBegan,
                 OperationEnded = OnOperationEnded,
 
-                OnScale = HandleScale,
                 OnFlip = HandleFlip,
                 OnReverse = HandleReverse,
             };
@@ -157,6 +160,11 @@ namespace osu.Game.Screens.Edit.Compose.Components
         /// <returns>Whether any items could be scaled.</returns>
         public virtual bool HandleScale(Vector2 scale, Anchor anchor) => false;
 
+        /// <summary>
+        /// Creates the handler to use for scale operations.
+        /// </summary>
+        public virtual SelectionScaleHandler CreateScaleHandler() => new SelectionScaleHandler();
+
         /// <summary>
         /// Handles the selected items being flipped.
         /// </summary>

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

@@ -0,0 +1,104 @@
+// 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.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Primitives;
+using osuTK;
+
+namespace osu.Game.Screens.Edit.Compose.Components
+{
+    /// <summary>
+    /// Base handler for editor scale operations.
+    /// </summary>
+    public partial class SelectionScaleHandler : Component
+    {
+        /// <summary>
+        /// Whether horizontal scaling (from the left or right edge) support should be enabled.
+        /// </summary>
+        public Bindable<bool> CanScaleX { get; private set; } = new BindableBool();
+
+        /// <summary>
+        /// Whether vertical scaling (from the top or bottom edge) support should be enabled.
+        /// </summary>
+        public Bindable<bool> CanScaleY { get; private set; } = new BindableBool();
+
+        /// <summary>
+        /// Whether diagonal scaling (from a corner) support should be enabled.
+        /// </summary>
+        /// <remarks>
+        /// There are some cases where we only want to allow proportional resizing, and not allow
+        /// one or both explicit directions of scale.
+        /// </remarks>
+        public Bindable<bool> CanScaleDiagonally { get; private set; } = new BindableBool();
+
+        public Quad? OriginalSurroundingQuad { get; protected set; }
+
+        /// <summary>
+        /// Performs a single, instant, atomic scale operation.
+        /// </summary>
+        /// <remarks>
+        /// This method is intended to be used in atomic contexts (such as when pressing a single button).
+        /// For continuous operations, see the <see cref="Begin"/>-<see cref="Update"/>-<see cref="Commit"/> flow.
+        /// </remarks>
+        /// <param name="scale">The scale to apply, as multiplier.</param>
+        /// <param name="origin">
+        /// The origin point to scale from.
+        /// If the default <see langword="null"/> value is supplied, a sane implementation-defined default will be used.
+        /// </param>
+        /// <param name="adjustAxis">The axes to adjust the scale in.</param>
+        public void ScaleSelection(Vector2 scale, Vector2? origin = null, Axes adjustAxis = Axes.Both)
+        {
+            Begin();
+            Update(scale, origin, adjustAxis);
+            Commit();
+        }
+
+        /// <summary>
+        /// Begins a continuous scale operation.
+        /// </summary>
+        /// <remarks>
+        /// This flow is intended to be used when a scale operation is made incrementally (such as when dragging a scale handle or slider).
+        /// For instantaneous, atomic operations, use the convenience <see cref="ScaleSelection"/> method.
+        /// </remarks>
+        public virtual void Begin()
+        {
+        }
+
+        /// <summary>
+        /// Updates a continuous scale operation.
+        /// Must be preceded by a <see cref="Begin"/> call.
+        /// </summary>
+        /// <remarks>
+        /// <para>
+        /// This flow is intended to be used when a scale operation is made incrementally (such as when dragging a scale handle or slider).
+        /// As such, the values of <paramref name="scale"/> and <paramref name="origin"/> supplied should be relative to the state of the objects being scaled
+        /// when <see cref="Begin"/> was called, rather than instantaneous deltas.
+        /// </para>
+        /// <para>
+        /// For instantaneous, atomic operations, use the convenience <see cref="ScaleSelection"/> method.
+        /// </para>
+        /// </remarks>
+        /// <param name="scale">The Scale to apply, as multiplier.</param>
+        /// <param name="origin">
+        /// The origin point to scale from.
+        /// If the default <see langword="null"/> value is supplied, a sane implementation-defined default will be used.
+        /// </param>
+        /// <param name="adjustAxis">The axes to adjust the scale in.</param>
+        public virtual void Update(Vector2 scale, Vector2? origin = null, Axes adjustAxis = Axes.Both)
+        {
+        }
+
+        /// <summary>
+        /// Ends a continuous scale operation.
+        /// Must be preceded by a <see cref="Begin"/> call.
+        /// </summary>
+        /// <remarks>
+        /// This flow is intended to be used when a scale operation is made incrementally (such as when dragging a scale handle or slider).
+        /// For instantaneous, atomic operations, use the convenience <see cref="ScaleSelection"/> method.
+        /// </remarks>
+        public virtual void Commit()
+        {
+        }
+    }
+}

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

@@ -138,7 +138,7 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
             protected override void LoadComplete()
             {
                 base.LoadComplete();
-                ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(sliderVelocitySlider));
+                ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(sliderVelocitySlider));
             }
         }
     }

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

@@ -142,7 +142,7 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
             protected override void LoadComplete()
             {
                 base.LoadComplete();
-                ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(volume));
+                ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(volume));
             }
 
             private static string? getCommonBank(IList<HitSampleInfo>[] relevantSamples) => relevantSamples.Select(GetBankValue).Distinct().Count() == 1 ? GetBankValue(relevantSamples.First()) : null;

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

@@ -7,7 +7,6 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Primitives;
 using osu.Framework.Logging;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
@@ -20,7 +19,7 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
     public partial class TimelineTickDisplay : TimelinePart<PointVisualisation>
     {
         // With current implementation every tick in the sub-tree should be visible, no need to check whether they are masked away.
-        public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => false;
+        public override bool UpdateSubTreeMasking() => false;
 
         [Resolved]
         private EditorBeatmap beatmap { get; set; } = null!;

osu.Game/Screens/Edit/Editor.cs

@@ -372,7 +372,7 @@ namespace osu.Game.Screens.Edit
                                     }
                                 }
                             },
-                            new EditorScreenSwitcherControl
+                            screenSwitcher = new EditorScreenSwitcherControl
                             {
                                 Anchor = Anchor.BottomRight,
                                 Origin = Anchor.BottomRight,
@@ -662,23 +662,23 @@ namespace osu.Game.Screens.Edit
                     return true;
 
                 case GlobalAction.EditorComposeMode:
-                    Mode.Value = EditorScreenMode.Compose;
+                    screenSwitcher.SelectItem(EditorScreenMode.Compose);
                     return true;
 
                 case GlobalAction.EditorDesignMode:
-                    Mode.Value = EditorScreenMode.Design;
+                    screenSwitcher.SelectItem(EditorScreenMode.Design);
                     return true;
 
                 case GlobalAction.EditorTimingMode:
-                    Mode.Value = EditorScreenMode.Timing;
+                    screenSwitcher.SelectItem(EditorScreenMode.Timing);
                     return true;
 
                 case GlobalAction.EditorSetupMode:
-                    Mode.Value = EditorScreenMode.SongSetup;
+                    screenSwitcher.SelectItem(EditorScreenMode.SongSetup);
                     return true;
 
                 case GlobalAction.EditorVerifyMode:
-                    Mode.Value = EditorScreenMode.Verify;
+                    screenSwitcher.SelectItem(EditorScreenMode.Verify);
                     return true;
 
                 case GlobalAction.EditorTestGameplay:
@@ -959,6 +959,8 @@ namespace osu.Game.Screens.Edit
         [CanBeNull]
         private ScheduledDelegate playbackDisabledDebounce;
 
+        private EditorScreenSwitcherControl screenSwitcher;
+
         private void updateSampleDisabledState()
         {
             bool shouldDisableSamples = clock.SeekingOrStopped.Value

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

@@ -45,7 +45,7 @@ namespace osu.Game.Screens.Edit.Setup
                 OnFocused?.Invoke();
                 base.OnFocus(e);
 
-                GetContainingInputManager().TriggerFocusContention(this);
+                GetContainingFocusManager().TriggerFocusContention(this);
             }
         }
     }

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

@@ -73,7 +73,7 @@ namespace osu.Game.Screens.Edit.Setup
             base.LoadComplete();
 
             if (string.IsNullOrEmpty(ArtistTextBox.Current.Value))
-                ScheduleAfterChildren(() => GetContainingInputManager().ChangeFocus(ArtistTextBox));
+                ScheduleAfterChildren(() => GetContainingFocusManager().ChangeFocus(ArtistTextBox));
 
             ArtistTextBox.Current.BindValueChanged(artist => transferIfRomanised(artist.NewValue, RomanisedArtistTextBox));
             TitleTextBox.Current.BindValueChanged(title => transferIfRomanised(title.NewValue, RomanisedTitleTextBox));

osu.Game/Screens/Edit/Timing/IndeterminateSliderWithTextBoxInput.cs

@@ -1,7 +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.Numerics;
 using System.Globalization;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -12,7 +12,7 @@ using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays.Settings;
 using osu.Game.Utils;
-using osuTK;
+using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -22,7 +22,7 @@ namespace osu.Game.Screens.Edit.Timing
     /// by providing an "indeterminate state".
     /// </summary>
     public partial class IndeterminateSliderWithTextBoxInput<T> : CompositeDrawable, IHasCurrentValue<T?>
-        where T : struct, IEquatable<T>, IComparable<T>, IConvertible
+        where T : struct, INumber<T>, IMinMaxValue<T>
     {
         /// <summary>
         /// A custom step value for each key press which actuates a change on this control.
@@ -126,7 +126,7 @@ namespace osu.Game.Screens.Edit.Timing
         protected override void OnFocus(FocusEvent e)
         {
             base.OnFocus(e);
-            GetContainingInputManager().ChangeFocus(textBox);
+            GetContainingFocusManager().ChangeFocus(textBox);
         }
 
         private void updateState()
@@ -136,7 +136,7 @@ namespace osu.Game.Screens.Edit.Timing
                 slider.Current.Value = nonNullValue;
 
                 // use the value from the slider to ensure that any precision/min/max set on it via the initial indeterminate value have been applied correctly.
-                decimal decimalValue = slider.Current.Value.ToDecimal(NumberFormatInfo.InvariantInfo);
+                decimal decimalValue = decimal.CreateTruncating(slider.Current.Value);
                 textBox.Text = decimalValue.ToString($@"N{FormatUtils.FindPrecision(decimalValue)}");
                 textBox.PlaceholderText = string.Empty;
             }

osu.Game/Screens/Menu/ButtonSystem.cs

@@ -24,6 +24,7 @@ using osu.Game.Input;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
 using osu.Game.Online.API;
+using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osuTK;
 using osuTK.Graphics;
@@ -46,6 +47,7 @@ namespace osu.Game.Screens.Menu
         public Action? OnSettings;
         public Action? OnMultiplayer;
         public Action? OnPlaylists;
+        public Action<Room>? OnDailyChallenge;
 
         private readonly IBindable<bool> isIdle = new BindableBool();
 
@@ -102,10 +104,13 @@ namespace osu.Game.Screens.Menu
 
             buttonArea.AddRange(new Drawable[]
             {
-                new MainMenuButton(ButtonSystemStrings.Settings, string.Empty, OsuIcon.Settings, new Color4(85, 85, 85, 255), () => OnSettings?.Invoke(), -WEDGE_WIDTH, Key.O, Key.S),
+                new MainMenuButton(ButtonSystemStrings.Settings, string.Empty, OsuIcon.Settings, new Color4(85, 85, 85, 255), _ => OnSettings?.Invoke(), Key.O, Key.S)
-                backButton = new MainMenuButton(ButtonSystemStrings.Back, @"back-to-top", OsuIcon.PrevCircle, new Color4(51, 58, 94, 255), () => State = ButtonSystemState.TopLevel,
-                    -WEDGE_WIDTH)
                 {
+                    Padding = new MarginPadding { Right = WEDGE_WIDTH },
+                },
+                backButton = new MainMenuButton(ButtonSystemStrings.Back, @"back-to-top", OsuIcon.PrevCircle, new Color4(51, 58, 94, 255), _ => State = ButtonSystemState.TopLevel)
+                {
+                    Padding = new MarginPadding { Right = WEDGE_WIDTH },
                     VisibleStateMin = ButtonSystemState.Play,
                     VisibleStateMax = ButtonSystemState.Edit,
                 },
@@ -127,21 +132,31 @@ namespace osu.Game.Screens.Menu
         [BackgroundDependencyLoader]
         private void load(AudioManager audio, IdleTracker? idleTracker, GameHost host)
         {
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Color4(102, 68, 204, 255), () => OnSolo?.Invoke(), WEDGE_WIDTH, Key.P));
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Color4(102, 68, 204, 255), _ => OnSolo?.Invoke(), Key.P)
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Multi, @"button-default-select", OsuIcon.Online, new Color4(94, 63, 186, 255), onMultiplayer, 0, Key.M));
+            {
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Playlists, @"button-default-select", OsuIcon.Tournament, new Color4(94, 63, 186, 255), onPlaylists, 0, Key.L));
+                Padding = new MarginPadding { Left = WEDGE_WIDTH },
+            });
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Multi, @"button-default-select", OsuIcon.Online, new Color4(94, 63, 186, 255), onMultiplayer, Key.M));
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Playlists, @"button-default-select", OsuIcon.Tournament, new Color4(94, 63, 186, 255), onPlaylists, Key.L));
+            buttonsPlay.Add(new DailyChallengeButton(@"button-default-select", new Color4(94, 63, 186, 255), onDailyChallenge, Key.D));
             buttonsPlay.ForEach(b => b.VisibleState = ButtonSystemState.Play);
 
-            buttonsEdit.Add(new MainMenuButton(EditorStrings.BeatmapEditor.ToLower(), @"button-default-select", OsuIcon.Beatmap, new Color4(238, 170, 0, 255), () => OnEditBeatmap?.Invoke(), WEDGE_WIDTH, Key.B, Key.E));
+            buttonsEdit.Add(new MainMenuButton(EditorStrings.BeatmapEditor.ToLower(), @"button-default-select", OsuIcon.Beatmap, new Color4(238, 170, 0, 255), _ => OnEditBeatmap?.Invoke(), Key.B, Key.E)
-            buttonsEdit.Add(new MainMenuButton(SkinEditorStrings.SkinEditor.ToLower(), @"button-default-select", OsuIcon.SkinB, new Color4(220, 160, 0, 255), () => OnEditSkin?.Invoke(), 0, Key.S));
+            {
+                Padding = new MarginPadding { Left = WEDGE_WIDTH },
+            });
+            buttonsEdit.Add(new MainMenuButton(SkinEditorStrings.SkinEditor.ToLower(), @"button-default-select", OsuIcon.SkinB, new Color4(220, 160, 0, 255), _ => OnEditSkin?.Invoke(), Key.S));
             buttonsEdit.ForEach(b => b.VisibleState = ButtonSystemState.Edit);
 
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Play, @"button-play-select", OsuIcon.Logo, new Color4(102, 68, 204, 255), () => State = ButtonSystemState.Play, WEDGE_WIDTH, Key.P, Key.M, Key.L));
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Play, @"button-play-select", OsuIcon.Logo, new Color4(102, 68, 204, 255), _ => State = ButtonSystemState.Play, Key.P, Key.M, Key.L)
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Edit, @"button-play-select", OsuIcon.EditCircle, new Color4(238, 170, 0, 255), () => State = ButtonSystemState.Edit, 0, Key.E));
+            {
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Browse, @"button-default-select", OsuIcon.Beatmap, new Color4(165, 204, 0, 255), () => OnBeatmapListing?.Invoke(), 0, Key.B, Key.D));
+                Padding = new MarginPadding { Left = WEDGE_WIDTH },
+            });
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Edit, @"button-play-select", OsuIcon.EditCircle, new Color4(238, 170, 0, 255), _ => State = ButtonSystemState.Edit, Key.E));
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Browse, @"button-default-select", OsuIcon.Beatmap, new Color4(165, 204, 0, 255), _ => OnBeatmapListing?.Invoke(), Key.B, Key.D));
 
             if (host.CanExit)
-                buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Exit, string.Empty, OsuIcon.CrossCircle, new Color4(238, 51, 153, 255), () => OnExit?.Invoke(), 0, Key.Q));
+                buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Exit, string.Empty, OsuIcon.CrossCircle, new Color4(238, 51, 153, 255), _ => OnExit?.Invoke(), Key.Q));
 
             buttonArea.AddRange(buttonsPlay);
             buttonArea.AddRange(buttonsEdit);
@@ -164,7 +179,7 @@ namespace osu.Game.Screens.Menu
             sampleLogoSwoosh = audio.Samples.Get(@"Menu/osu-logo-swoosh");
         }
 
-        private void onMultiplayer()
+        private void onMultiplayer(MainMenuButton _)
         {
             if (api.State.Value != APIState.Online)
             {
@@ -175,7 +190,7 @@ namespace osu.Game.Screens.Menu
             OnMultiplayer?.Invoke();
         }
 
-        private void onPlaylists()
+        private void onPlaylists(MainMenuButton _)
         {
             if (api.State.Value != APIState.Online)
             {
@@ -186,6 +201,20 @@ namespace osu.Game.Screens.Menu
             OnPlaylists?.Invoke();
         }
 
+        private void onDailyChallenge(MainMenuButton button)
+        {
+            if (api.State.Value != APIState.Online)
+            {
+                loginOverlay?.Show();
+                return;
+            }
+
+            var dailyChallengeButton = (DailyChallengeButton)button;
+
+            if (dailyChallengeButton.Room != null)
+                OnDailyChallenge?.Invoke(dailyChallengeButton.Room);
+        }
+
         private void updateIdleState(bool isIdle)
         {
             if (!ReturnToTopOnIdle)

osu.Game/Screens/Menu/DailyChallengeButton.cs

@@ -0,0 +1,221 @@
+// 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;
+using osu.Framework.Extensions.ObjectExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Threading;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps.Drawables;
+using osu.Game.Beatmaps.Drawables.Cards;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Localisation;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Online.Metadata;
+using osu.Game.Online.Rooms;
+using osu.Game.Overlays;
+using osuTK;
+using osuTK.Graphics;
+using osuTK.Input;
+
+namespace osu.Game.Screens.Menu
+{
+    public partial class DailyChallengeButton : MainMenuButton, IHasCustomTooltip<APIBeatmapSet?>
+    {
+        public Room? Room { get; private set; }
+
+        private readonly OsuSpriteText countdown;
+        private ScheduledDelegate? scheduledCountdownUpdate;
+
+        private UpdateableOnlineBeatmapSetCover cover = null!;
+        private IBindable<DailyChallengeInfo?> info = null!;
+
+        private Box gradientLayer = null!;
+
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
+        public DailyChallengeButton(string sampleName, Color4 colour, Action<MainMenuButton>? clickAction = null, params Key[] triggerKeys)
+            : base(ButtonSystemStrings.DailyChallenge, sampleName, OsuIcon.DailyChallenge, colour, clickAction, triggerKeys)
+        {
+            BaseSize = new Vector2(ButtonSystem.BUTTON_WIDTH * 1.3f, ButtonArea.BUTTON_AREA_HEIGHT);
+
+            Content.Add(countdown = new OsuSpriteText
+            {
+                Shadow = true,
+                AllowMultiline = false,
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+                Margin = new MarginPadding
+                {
+                    Left = -3,
+                    Bottom = 22,
+                },
+                Font = OsuFont.Default.With(size: 12),
+                Alpha = 0,
+            });
+        }
+
+        protected override Drawable CreateBackground(Colour4 accentColour) => new BufferedContainer
+        {
+            Children = new Drawable[]
+            {
+                cover = new UpdateableOnlineBeatmapSetCover(timeBeforeLoad: 0, timeBeforeUnload: 600_000)
+                {
+                    RelativeSizeAxes = Axes.Y,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    RelativePositionAxes = Axes.Both,
+                },
+                gradientLayer = new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = ColourInfo.GradientVertical(accentColour.Opacity(0.2f), accentColour),
+                    Blending = BlendingParameters.Additive,
+                },
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = accentColour.Opacity(0.7f)
+                },
+            },
+        };
+
+        [BackgroundDependencyLoader]
+        private void load(MetadataClient metadataClient)
+        {
+            info = metadataClient.DailyChallengeInfo.GetBoundCopy();
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            info.BindValueChanged(updateDisplay, true);
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (cover.LatestTransformEndTime == Time.Current)
+            {
+                const double duration = 3000;
+
+                float scale = 1 + RNG.NextSingle();
+
+                cover.ScaleTo(scale, duration, Easing.InOutSine)
+                     .RotateTo(RNG.NextSingle(-4, 4) * (scale - 1), duration, Easing.InOutSine)
+                     .MoveTo(new Vector2(
+                         RNG.NextSingle(-0.5f, 0.5f) * (scale - 1),
+                         RNG.NextSingle(-0.5f, 0.5f) * (scale - 1)
+                     ), duration, Easing.InOutSine);
+
+                gradientLayer.FadeIn(duration / 2)
+                             .Then()
+                             .FadeOut(duration / 2);
+            }
+        }
+
+        private void updateDisplay(ValueChangedEvent<DailyChallengeInfo?> info)
+        {
+            UpdateState();
+
+            scheduledCountdownUpdate?.Cancel();
+            scheduledCountdownUpdate = null;
+
+            if (info.NewValue == null)
+            {
+                Room = null;
+                cover.OnlineInfo = TooltipContent = null;
+            }
+            else
+            {
+                var roomRequest = new GetRoomRequest(info.NewValue.Value.RoomID);
+
+                roomRequest.Success += room =>
+                {
+                    Room = room;
+                    cover.OnlineInfo = TooltipContent = room.Playlist.FirstOrDefault()?.Beatmap.BeatmapSet as APIBeatmapSet;
+
+                    updateCountdown();
+                    Scheduler.AddDelayed(updateCountdown, 1000, true);
+                };
+                api.Queue(roomRequest);
+            }
+        }
+
+        private void updateCountdown()
+        {
+            if (Room == null)
+                return;
+
+            var remaining = (Room.EndDate.Value - DateTimeOffset.Now) ?? TimeSpan.Zero;
+
+            if (remaining <= TimeSpan.Zero)
+            {
+                countdown.FadeOut(250, Easing.OutQuint);
+            }
+            else
+            {
+                if (countdown.Alpha == 0)
+                    countdown.FadeIn(250, Easing.OutQuint);
+
+                countdown.Text = remaining.ToString(@"hh\:mm\:ss");
+            }
+        }
+
+        protected override void UpdateState()
+        {
+            if (info.IsNotNull() && info.Value == null)
+            {
+                ContractStyle = 0;
+                State = ButtonState.Contracted;
+                return;
+            }
+
+            base.UpdateState();
+        }
+
+        public ITooltip<APIBeatmapSet?> GetCustomTooltip() => new DailyChallengeTooltip();
+
+        public APIBeatmapSet? TooltipContent { get; private set; }
+
+        internal partial class DailyChallengeTooltip : CompositeDrawable, ITooltip<APIBeatmapSet?>
+        {
+            [Cached]
+            private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Purple);
+
+            private APIBeatmapSet? lastContent;
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                AutoSizeAxes = Axes.Both;
+            }
+
+            public void Move(Vector2 pos) => Position = pos;
+
+            public void SetContent(APIBeatmapSet? content)
+            {
+                if (content == lastContent)
+                    return;
+
+                lastContent = content;
+
+                ClearInternal();
+                if (content != null)
+                    AddInternal(new BeatmapCardNano(content));
+            }
+        }
+    }
+}