Merge branch 'master' into leaderboard-toggle

osu.Android.props

@@ -10,7 +10,7 @@
     <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2023.724.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2023.801.0" />
   </ItemGroup>
   <PropertyGroup>
     <!-- Fody does not handle Android build well, and warns when unchanged.

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

@@ -0,0 +1,147 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Extensions.TypeExtensions;
+using osu.Framework.Screens;
+using osu.Game.Beatmaps;
+using osu.Game.Replays;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Replays;
+using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Rulesets.Replays;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+using osu.Game.Screens.Play;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public partial class TestSceneSpinnerJudgement : RateAdjustedBeatmapTestScene
+    {
+        private const double time_spinner_start = 2000;
+        private const double time_spinner_end = 4000;
+
+        private List<JudgementResult> judgementResults = new List<JudgementResult>();
+        private ScoreAccessibleReplayPlayer currentPlayer = null!;
+
+        [Test]
+        public void TestHitNothing()
+        {
+            performTest(new List<ReplayFrame>());
+
+            AddAssert("all min judgements", () => judgementResults.All(result => result.Type == result.Judgement.MinResult));
+        }
+
+        [TestCase(1)]
+        [TestCase(2)]
+        [TestCase(5)]
+        public void TestNumberOfSpins(int spins)
+        {
+            performTest(generateReplay(spins));
+
+            for (int i = 0; i < spins; ++i)
+                assertResult<SpinnerTick>(i, HitResult.SmallBonus);
+
+            assertResult<SpinnerTick>(spins, HitResult.IgnoreMiss);
+        }
+
+        [Test]
+        public void TestHitEverything()
+        {
+            performTest(generateReplay(20));
+
+            AddAssert("all max judgements", () => judgementResults.All(result => result.Type == result.Judgement.MaxResult));
+        }
+
+        private static List<ReplayFrame> generateReplay(int spins)
+        {
+            var replayFrames = new List<ReplayFrame>();
+
+            const int frames_per_spin = 30;
+
+            for (int i = 0; i < spins * frames_per_spin; ++i)
+            {
+                float totalProgress = i / (float)(spins * frames_per_spin);
+                float spinProgress = (i % frames_per_spin) / (float)frames_per_spin;
+                double time = time_spinner_start + (time_spinner_end - time_spinner_start) * totalProgress;
+                float posX = MathF.Cos(2 * MathF.PI * spinProgress);
+                float posY = MathF.Sin(2 * MathF.PI * spinProgress);
+                Vector2 finalPos = OsuPlayfield.BASE_SIZE / 2 + new Vector2(posX, posY) * 50;
+
+                replayFrames.Add(new OsuReplayFrame(time, finalPos, OsuAction.LeftButton));
+            }
+
+            return replayFrames;
+        }
+
+        private void performTest(List<ReplayFrame> frames)
+        {
+            AddStep("load player", () =>
+            {
+                Beatmap.Value = CreateWorkingBeatmap(new Beatmap<OsuHitObject>
+                {
+                    HitObjects =
+                    {
+                        new Spinner
+                        {
+                            StartTime = time_spinner_start,
+                            EndTime = time_spinner_end,
+                            Position = OsuPlayfield.BASE_SIZE / 2
+                        }
+                    },
+                    BeatmapInfo =
+                    {
+                        Difficulty = new BeatmapDifficulty(),
+                        Ruleset = new OsuRuleset().RulesetInfo
+                    },
+                });
+
+                var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
+
+                p.OnLoadComplete += _ =>
+                {
+                    p.ScoreProcessor.NewJudgement += result =>
+                    {
+                        if (currentPlayer == p) judgementResults.Add(result);
+                    };
+                };
+
+                LoadScreen(currentPlayer = p);
+                judgementResults = new List<JudgementResult>();
+            });
+
+            AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
+            AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
+        }
+
+        private void assertResult<T>(int index, HitResult expectedResult)
+        {
+            AddAssert($"{typeof(T).ReadableName()} ({index}) judged as {expectedResult}",
+                () => judgementResults.Where(j => j.HitObject is T).OrderBy(j => j.HitObject.StartTime).ElementAt(index).Type,
+                () => Is.EqualTo(expectedResult));
+        }
+
+        private partial class ScoreAccessibleReplayPlayer : ReplayPlayer
+        {
+            public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
+
+            protected override bool PauseOnFocusLost => false;
+
+            public ScoreAccessibleReplayPlayer(Score score)
+                : base(score, new PlayerConfiguration
+                {
+                    AllowPause = false,
+                    ShowResults = false,
+                })
+            {
+            }
+        }
+    }
+}

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

@@ -17,6 +17,7 @@ using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Compose.Components;
+using osu.Game.Utils;
 using osuTK;
 using osuTK.Input;
 
@@ -27,11 +28,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         [Resolved(CanBeNull = true)]
         private IDistanceSnapProvider? snapProvider { get; set; }
 
-        /// <summary>
-        /// During a transform, the initial origin is stored so it can be used throughout the operation.
-        /// </summary>
-        private Vector2? referenceOrigin;
-
         /// <summary>
         /// During a transform, the initial path types of a single selected slider are stored so they
         /// can be maintained throughout the operation.
@@ -42,9 +38,8 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             base.OnSelectionChanged();
 
-            Quad quad = selectedMovableObjects.Length > 0 ? getSurroundingQuad(selectedMovableObjects) : new Quad();
+            Quad quad = selectedMovableObjects.Length > 0 ? GeometryUtils.GetSurroundingQuad(selectedMovableObjects) : new Quad();
 
-            SelectionBox.CanRotate = quad.Width > 0 || quad.Height > 0;
             SelectionBox.CanFlipX = SelectionBox.CanScaleX = quad.Width > 0;
             SelectionBox.CanFlipY = SelectionBox.CanScaleY = quad.Height > 0;
             SelectionBox.CanReverse = EditorBeatmap.SelectedHitObjects.Count > 1 || EditorBeatmap.SelectedHitObjects.Any(s => s is Slider);
@@ -53,7 +48,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         protected override void OnOperationEnded()
         {
             base.OnOperationEnded();
-            referenceOrigin = null;
             referencePathTypes = null;
         }
 
@@ -109,13 +103,13 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             var hitObjects = selectedMovableObjects;
 
-            var flipQuad = flipOverOrigin ? new Quad(0, 0, OsuPlayfield.BASE_SIZE.X, OsuPlayfield.BASE_SIZE.Y) : getSurroundingQuad(hitObjects);
+            var flipQuad = flipOverOrigin ? new Quad(0, 0, OsuPlayfield.BASE_SIZE.X, OsuPlayfield.BASE_SIZE.Y) : GeometryUtils.GetSurroundingQuad(hitObjects);
 
             bool didFlip = false;
 
             foreach (var h in hitObjects)
             {
-                var flippedPosition = GetFlippedPosition(direction, flipQuad, h.Position);
+                var flippedPosition = GeometryUtils.GetFlippedPosition(direction, flipQuad, h.Position);
 
                 if (!Precision.AlmostEquals(flippedPosition, h.Position))
                 {
@@ -169,34 +163,13 @@ namespace osu.Game.Rulesets.Osu.Edit
             if ((reference & Anchor.y0) > 0) scale.Y = -scale.Y;
         }
 
-        public override bool HandleRotation(float delta)
-        {
-            var hitObjects = selectedMovableObjects;
-
-            Quad quad = getSurroundingQuad(hitObjects);
-
-            referenceOrigin ??= quad.Centre;
-
-            foreach (var h in hitObjects)
-            {
-                h.Position = RotatePointAroundOrigin(h.Position, referenceOrigin.Value, delta);
-
-                if (h is IHasPath path)
-                {
-                    foreach (PathControlPoint cp in path.Path.ControlPoints)
-                        cp.Position = RotatePointAroundOrigin(cp.Position, Vector2.Zero, delta);
-                }
-            }
-
-            // this isn't always the case but let's be lenient for now.
-            return true;
-        }
+        public override SelectionRotationHandler CreateRotationHandler() => new OsuSelectionRotationHandler();
 
         private void scaleSlider(Slider slider, Vector2 scale)
         {
             referencePathTypes ??= slider.Path.ControlPoints.Select(p => p.Type).ToList();
 
-            Quad sliderQuad = GetSurroundingQuad(slider.Path.ControlPoints.Select(p => p.Position));
+            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;
@@ -222,7 +195,7 @@ namespace osu.Game.Rulesets.Osu.Edit
             slider.SnapTo(snapProvider);
 
             //if sliderhead or sliderend end up outside playfield, revert scaling.
-            Quad scaledQuad = getSurroundingQuad(new OsuHitObject[] { slider });
+            Quad scaledQuad = GeometryUtils.GetSurroundingQuad(new OsuHitObject[] { slider });
             (bool xInBounds, bool yInBounds) = isQuadInBounds(scaledQuad);
 
             if (xInBounds && yInBounds && slider.Path.HasValidLength)
@@ -238,10 +211,10 @@ namespace osu.Game.Rulesets.Osu.Edit
         private void scaleHitObjects(OsuHitObject[] hitObjects, Anchor reference, Vector2 scale)
         {
             scale = getClampedScale(hitObjects, reference, scale);
-            Quad selectionQuad = getSurroundingQuad(hitObjects);
+            Quad selectionQuad = GeometryUtils.GetSurroundingQuad(hitObjects);
 
             foreach (var h in hitObjects)
-                h.Position = GetScaledPosition(reference, scale, selectionQuad, h.Position);
+                h.Position = GeometryUtils.GetScaledPosition(reference, scale, selectionQuad, h.Position);
         }
 
         private (bool X, bool Y) isQuadInBounds(Quad quad)
@@ -256,7 +229,7 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             var hitObjects = selectedMovableObjects;
 
-            Quad quad = getSurroundingQuad(hitObjects);
+            Quad quad = GeometryUtils.GetSurroundingQuad(hitObjects);
 
             Vector2 delta = Vector2.Zero;
 
@@ -286,7 +259,7 @@ namespace osu.Game.Rulesets.Osu.Edit
             float xOffset = ((reference & Anchor.x0) > 0) ? -scale.X : 0;
             float yOffset = ((reference & Anchor.y0) > 0) ? -scale.Y : 0;
 
-            Quad selectionQuad = getSurroundingQuad(hitObjects);
+            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);
@@ -311,26 +284,6 @@ namespace osu.Game.Rulesets.Osu.Edit
             return scale;
         }
 
-        /// <summary>
-        /// Returns a gamefield-space quad surrounding the provided hit objects.
-        /// </summary>
-        /// <param name="hitObjects">The hit objects to calculate a quad for.</param>
-        private Quad getSurroundingQuad(OsuHitObject[] hitObjects) =>
-            GetSurroundingQuad(hitObjects.SelectMany(h =>
-            {
-                if (h is IHasPath path)
-                {
-                    return new[]
-                    {
-                        h.Position,
-                        // can't use EndPosition for reverse slider cases.
-                        h.Position + path.Path.PositionAt(1)
-                    };
-                }
-
-                return new[] { h.Position };
-            }));
-
         /// <summary>
         /// All osu! hitobjects which can be moved/rotated/scaled.
         /// </summary>

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

@@ -0,0 +1,107 @@
+// 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.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Objects;
+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 OsuSelectionRotationHandler : SelectionRotationHandler
+    {
+        [Resolved]
+        private IEditorChangeHandler? changeHandler { 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);
+            CanRotate.Value = quad.Width > 0 || quad.Height > 0;
+        }
+
+        private OsuHitObject[]? objectsInRotation;
+
+        private Vector2? defaultOrigin;
+        private Dictionary<OsuHitObject, Vector2>? originalPositions;
+        private Dictionary<IHasPath, Vector2[]>? originalPathControlPointPositions;
+
+        public override void Begin()
+        {
+            if (objectsInRotation != null)
+                throw new InvalidOperationException($"Cannot {nameof(Begin)} a rotate operation while another is in progress!");
+
+            changeHandler?.BeginChange();
+
+            objectsInRotation = selectedMovableObjects.ToArray();
+            defaultOrigin = GeometryUtils.GetSurroundingQuad(objectsInRotation).Centre;
+            originalPositions = objectsInRotation.ToDictionary(obj => obj, obj => obj.Position);
+            originalPathControlPointPositions = objectsInRotation.OfType<IHasPath>().ToDictionary(
+                obj => obj,
+                obj => obj.Path.ControlPoints.Select(point => point.Position).ToArray());
+        }
+
+        public override void Update(float rotation, Vector2? origin = null)
+        {
+            if (objectsInRotation == null)
+                throw new InvalidOperationException($"Cannot {nameof(Update)} a rotate operation without calling {nameof(Begin)} first!");
+
+            Debug.Assert(originalPositions != null && originalPathControlPointPositions != null && defaultOrigin != null);
+
+            Vector2 actualOrigin = origin ?? defaultOrigin.Value;
+
+            foreach (var ho in objectsInRotation)
+            {
+                ho.Position = GeometryUtils.RotatePointAroundOrigin(originalPositions[ho], actualOrigin, rotation);
+
+                if (ho is IHasPath withPath)
+                {
+                    var originalPath = originalPathControlPointPositions[withPath];
+
+                    for (int i = 0; i < withPath.Path.ControlPoints.Count; ++i)
+                        withPath.Path.ControlPoints[i].Position = GeometryUtils.RotatePointAroundOrigin(originalPath[i], Vector2.Zero, rotation);
+                }
+            }
+        }
+
+        public override void Commit()
+        {
+            if (objectsInRotation == null)
+                throw new InvalidOperationException($"Cannot {nameof(Commit)} a rotate operation without calling {nameof(Begin)} first!");
+
+            changeHandler?.EndChange();
+
+            objectsInRotation = null;
+            originalPositions = null;
+            originalPathControlPointPositions = null;
+            defaultOrigin = null;
+        }
+
+        private IEnumerable<OsuHitObject> selectedMovableObjects => selectedItems.Cast<OsuHitObject>()
+                                                                                 .Where(h => h is not Spinner);
+    }
+}

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

@@ -72,9 +72,9 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
 
             lastAngle = thisAngle;
 
-            IsSpinning.Value = isSpinnableTime && Math.Abs(currentRotation / 2 - Rotation) > 5f;
+            IsSpinning.Value = isSpinnableTime && Math.Abs(currentRotation - Rotation) > 10f;
 
-            Rotation = (float)Interpolation.Damp(Rotation, currentRotation / 2, 0.99, Math.Abs(Time.Elapsed));
+            Rotation = (float)Interpolation.Damp(Rotation, currentRotation, 0.99, Math.Abs(Time.Elapsed));
         }
 
         /// <summary>

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

@@ -11,6 +11,8 @@ namespace osu.Game.Rulesets.Taiko.Edit
 {
     public partial class TaikoHitObjectComposer : HitObjectComposer<TaikoHitObject>
     {
+        protected override bool ApplyHorizontalCentering => false;
+
         public TaikoHitObjectComposer(TaikoRuleset ruleset)
             : base(ruleset)
         {

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

@@ -3,8 +3,11 @@
 
 #nullable disable
 
+using System;
 using System.Linq;
+using JetBrains.Annotations;
 using NUnit.Framework;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
@@ -20,6 +23,14 @@ namespace osu.Game.Tests.Visual.Editing
         private Container selectionArea;
         private SelectionBox selectionBox;
 
+        [Cached(typeof(SelectionRotationHandler))]
+        private TestSelectionRotationHandler rotationHandler;
+
+        public TestSceneComposeSelectBox()
+        {
+            rotationHandler = new TestSelectionRotationHandler(() => selectionArea);
+        }
+
         [SetUp]
         public void SetUp() => Schedule(() =>
         {
@@ -34,13 +45,11 @@ namespace osu.Game.Tests.Visual.Editing
                     {
                         RelativeSizeAxes = Axes.Both,
 
-                        CanRotate = true,
                         CanScaleX = true,
                         CanScaleY = true,
                         CanFlipX = true,
                         CanFlipY = true,
 
-                        OnRotation = handleRotation,
                         OnScale = handleScale
                     }
                 }
@@ -71,11 +80,48 @@ namespace osu.Game.Tests.Visual.Editing
             return true;
         }
 
-        private bool handleRotation(float angle)
+        private partial class TestSelectionRotationHandler : SelectionRotationHandler
         {
-            // kinda silly and wrong, but just showing that the drag handles work.
-            selectionArea.Rotation += angle;
-            return true;
+            private readonly Func<Container> getTargetContainer;
+
+            public TestSelectionRotationHandler(Func<Container> getTargetContainer)
+            {
+                this.getTargetContainer = getTargetContainer;
+
+                CanRotate.Value = true;
+            }
+
+            [CanBeNull]
+            private Container targetContainer;
+
+            private float? initialRotation;
+
+            public override void Begin()
+            {
+                if (targetContainer != null)
+                    throw new InvalidOperationException($"Cannot {nameof(Begin)} a rotate operation while another is in progress!");
+
+                targetContainer = getTargetContainer();
+                initialRotation = targetContainer!.Rotation;
+            }
+
+            public override void Update(float rotation, Vector2? origin = null)
+            {
+                if (targetContainer == null)
+                    throw new InvalidOperationException($"Cannot {nameof(Update)} a rotate operation without calling {nameof(Begin)} first!");
+
+                // kinda silly and wrong, but just showing that the drag handles work.
+                targetContainer.Rotation = initialRotation!.Value + rotation;
+            }
+
+            public override void Commit()
+            {
+                if (targetContainer == null)
+                    throw new InvalidOperationException($"Cannot {nameof(Commit)} a rotate operation without calling {nameof(Begin)} first!");
+
+                targetContainer = null;
+                initialRotation = null;
+            }
         }
 
         [Test]

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

@@ -65,6 +65,19 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddStep("clear playing users", () => playingUsers.Clear());
         }
 
+        [TestCase(1)]
+        [TestCase(4)]
+        public void TestGeneral(int count)
+        {
+            int[] userIds = getPlayerIds(count);
+
+            start(userIds);
+            loadSpectateScreen();
+
+            sendFrames(userIds, 1000);
+            AddWaitStep("wait a bit", 20);
+        }
+
         [Test]
         public void TestDelayedStart()
         {
@@ -88,18 +101,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddUntilStep("two players added", () => spectatorScreen.ChildrenOfType<Player>().Count() == 2);
         }
 
-        [Test]
-        public void TestGeneral()
-        {
-            int[] userIds = getPlayerIds(4);
-
-            start(userIds);
-            loadSpectateScreen();
-
-            sendFrames(userIds, 1000);
-            AddWaitStep("wait a bit", 20);
-        }
-
         [Test]
         public void TestSpectatorPlayerInteractiveElementsHidden()
         {

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

@@ -170,6 +170,39 @@ namespace osu.Game.Tests.Visual.Navigation
             AddUntilStep("time is correct", () => getEditor().ChildrenOfType<EditorClock>().First().CurrentTime, () => Is.EqualTo(1234));
         }
 
+        [Test]
+        public void TestAttemptGlobalMusicOperationFromEditor()
+        {
+            BeatmapSetInfo beatmapSet = null!;
+
+            AddStep("import test beatmap", () => Game.BeatmapManager.Import(TestResources.GetTestBeatmapForImport()).WaitSafely());
+            AddStep("retrieve beatmap", () => beatmapSet = Game.BeatmapManager.QueryBeatmapSet(set => !set.Protected).AsNonNull().Value.Detach());
+
+            AddStep("present beatmap", () => Game.PresentBeatmap(beatmapSet));
+            AddUntilStep("wait for song select",
+                () => Game.Beatmap.Value.BeatmapSetInfo.Equals(beatmapSet)
+                      && Game.ScreenStack.CurrentScreen is PlaySongSelect songSelect
+                      && songSelect.IsLoaded);
+
+            AddUntilStep("wait for music playing", () => Game.MusicController.IsPlaying);
+            AddStep("user request stop", () => Game.MusicController.Stop(requestedByUser: true));
+            AddUntilStep("wait for music stopped", () => !Game.MusicController.IsPlaying);
+
+            AddStep("open editor", () => ((PlaySongSelect)Game.ScreenStack.CurrentScreen).Edit(beatmapSet.Beatmaps.First(beatmap => beatmap.Ruleset.OnlineID == 0)));
+            AddUntilStep("wait for editor open", () => Game.ScreenStack.CurrentScreen is Editor editor && editor.ReadyForUse);
+
+            AddUntilStep("music still stopped", () => !Game.MusicController.IsPlaying);
+            AddStep("user request play", () => Game.MusicController.Play(requestedByUser: true));
+            AddUntilStep("music still stopped", () => !Game.MusicController.IsPlaying);
+
+            AddStep("exit to song select", () => Game.PerformFromScreen(_ => { }, typeof(PlaySongSelect).Yield()));
+            AddUntilStep("wait for song select", () => Game.ScreenStack.CurrentScreen is PlaySongSelect);
+
+            AddUntilStep("wait for music playing", () => Game.MusicController.IsPlaying);
+            AddStep("user request stop", () => Game.MusicController.Stop(requestedByUser: true));
+            AddUntilStep("wait for music stopped", () => !Game.MusicController.IsPlaying);
+        }
+
         private EditorBeatmap getEditorBeatmap() => getEditor().ChildrenOfType<EditorBeatmap>().Single();
 
         private Editor getEditor() => (Editor)Game.ScreenStack.CurrentScreen;

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

@@ -13,6 +13,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
 using osu.Game.Overlays;
+using osu.Game.Rulesets.Mods;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play;
@@ -86,6 +87,29 @@ namespace osu.Game.Tests.Visual.Navigation
             AddAssert("did perform", () => actionPerformed);
         }
 
+        [Test]
+        public void TestPerformAtMenuFromPlayerLoaderWithAutoplayShortcut()
+        {
+            importAndWaitForSongSelect();
+
+            AddStep("press ctrl+enter", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Key(Key.Enter);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+
+            AddUntilStep("Wait for new screen", () => Game.ScreenStack.CurrentScreen is PlayerLoader);
+
+            AddAssert("Mods include autoplay", () => Game.SelectedMods.Value.Any(m => m is ModAutoplay));
+
+            AddStep("try to perform", () => Game.PerformFromScreen(_ => actionPerformed = true));
+            AddUntilStep("returned to main menu", () => Game.ScreenStack.CurrentScreen is MainMenu);
+            AddAssert("did perform", () => actionPerformed);
+
+            AddAssert("Mods don't include autoplay", () => !Game.SelectedMods.Value.Any(m => m is ModAutoplay));
+        }
+
         [Test]
         public void TestPerformEnsuresScreenIsLoaded()
         {

osu.Game.Tests/Visual/TestSceneOsuScreenStack.cs

@@ -56,38 +56,38 @@ namespace osu.Game.Tests.Visual
         public void AllowTrackAdjustmentsTest()
         {
             AddStep("push allowing screen", () => stack.Push(loadNewScreen<AllowScreen>()));
-            AddAssert("allows adjustments 1", () => musicController.AllowTrackAdjustments);
+            AddAssert("allows adjustments 1", () => musicController.ApplyModTrackAdjustments);
 
             AddStep("push inheriting screen", () => stack.Push(loadNewScreen<InheritScreen>()));
-            AddAssert("allows adjustments 2", () => musicController.AllowTrackAdjustments);
+            AddAssert("allows adjustments 2", () => musicController.ApplyModTrackAdjustments);
 
             AddStep("push disallowing screen", () => stack.Push(loadNewScreen<DisallowScreen>()));
-            AddAssert("disallows adjustments 3", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 3", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("push inheriting screen", () => stack.Push(loadNewScreen<InheritScreen>()));
-            AddAssert("disallows adjustments 4", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 4", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("push inheriting screen", () => stack.Push(loadNewScreen<InheritScreen>()));
-            AddAssert("disallows adjustments 5", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 5", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("push allowing screen", () => stack.Push(loadNewScreen<AllowScreen>()));
-            AddAssert("allows adjustments 6", () => musicController.AllowTrackAdjustments);
+            AddAssert("allows adjustments 6", () => musicController.ApplyModTrackAdjustments);
 
             // Now start exiting from screens
             AddStep("exit screen", () => stack.Exit());
-            AddAssert("disallows adjustments 7", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 7", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("exit screen", () => stack.Exit());
-            AddAssert("disallows adjustments 8", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 8", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("exit screen", () => stack.Exit());
-            AddAssert("disallows adjustments 9", () => !musicController.AllowTrackAdjustments);
+            AddAssert("disallows adjustments 9", () => !musicController.ApplyModTrackAdjustments);
 
             AddStep("exit screen", () => stack.Exit());
-            AddAssert("allows adjustments 10", () => musicController.AllowTrackAdjustments);
+            AddAssert("allows adjustments 10", () => musicController.ApplyModTrackAdjustments);
 
             AddStep("exit screen", () => stack.Exit());
-            AddAssert("allows adjustments 11", () => musicController.AllowTrackAdjustments);
+            AddAssert("allows adjustments 11", () => musicController.ApplyModTrackAdjustments);
         }
 
         public partial class TestScreen : ScreenWithBeatmapBackground
@@ -129,12 +129,12 @@ namespace osu.Game.Tests.Visual
 
         private partial class AllowScreen : OsuScreen
         {
-            public override bool? AllowTrackAdjustments => true;
+            public override bool? ApplyModTrackAdjustments => true;
         }
 
         public partial class DisallowScreen : OsuScreen
         {
-            public override bool? AllowTrackAdjustments => false;
+            public override bool? ApplyModTrackAdjustments => false;
         }
 
         private partial class InheritScreen : OsuScreen

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

@@ -99,16 +99,18 @@ namespace osu.Game.Tests.Visual.UserInterface
         {
             TestUpdateableOnlineBeatmapSetCover updateableCover = null;
 
-            AddStep("setup cover", () => Child = updateableCover = new TestUpdateableOnlineBeatmapSetCover
+            AddStep("setup cover", () => Child = updateableCover = new TestUpdateableOnlineBeatmapSetCover(400)
             {
                 OnlineInfo = CreateAPIBeatmapSet(),
                 RelativeSizeAxes = Axes.Both,
                 Masking = true,
             });
 
-            AddStep("change model", () => updateableCover.OnlineInfo = null);
-            AddWaitStep("wait some", 5);
-            AddAssert("no cover added", () => !updateableCover.ChildrenOfType<DelayedLoadUnloadWrapper>().Any());
+            AddStep("change model to null", () => updateableCover.OnlineInfo = null);
+
+            AddUntilStep("wait for load", () => updateableCover.DelayedLoadFinished);
+
+            AddAssert("no cover added", () => !updateableCover.ChildrenOfType<TestOnlineBeatmapSetCover>().Any());
         }
 
         [Test]
@@ -143,11 +145,19 @@ namespace osu.Game.Tests.Visual.UserInterface
         {
             private readonly int loadDelay;
 
+            public bool DelayedLoadFinished;
+
             public TestUpdateableOnlineBeatmapSetCover(int loadDelay = 10000)
             {
                 this.loadDelay = loadDelay;
             }
 
+            protected override void OnLoadFinished()
+            {
+                base.OnLoadFinished();
+                DelayedLoadFinished = true;
+            }
+
             protected override Drawable CreateDrawable(IBeatmapSetOnlineInfo model)
             {
                 if (model == null)

osu.Game.Tournament/Components/TournamentBeatmapPanel.cs

@@ -136,11 +136,11 @@ namespace osu.Game.Tournament.Components
             if (match.NewValue != null)
                 match.NewValue.PicksBans.CollectionChanged += picksBansOnCollectionChanged;
 
-            updateState();
+            Scheduler.AddOnce(updateState);
         }
 
         private void picksBansOnCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
-            => updateState();
+            => Scheduler.AddOnce(updateState);
 
         private BeatmapChoice? choice;
 

osu.Game.Tournament/Screens/Editors/LadderEditorScreen.cs

@@ -37,6 +37,8 @@ namespace osu.Game.Tournament.Screens.Editors
 
         private WarningBox rightClickMessage;
 
+        private RectangularPositionSnapGrid grid;
+
         [Resolved(canBeNull: true)]
         [CanBeNull]
         private IDialogOverlay dialogOverlay { get; set; }
@@ -53,10 +55,12 @@ namespace osu.Game.Tournament.Screens.Editors
 
             AddInternal(rightClickMessage = new WarningBox("Right click to place and link matches"));
 
-            ScrollContent.Add(new RectangularPositionSnapGrid(Vector2.Zero)
+            ScrollContent.Add(grid = new RectangularPositionSnapGrid(Vector2.Zero)
             {
                 Spacing = new Vector2(GRID_SPACING),
-                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                BypassAutoSizeAxes = Axes.Both,
                 Depth = float.MaxValue
             });
 
@@ -64,6 +68,22 @@ namespace osu.Game.Tournament.Screens.Editors
             updateMessage();
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            // Expand grid with the content to allow going beyond the bounds of the screen.
+            grid.Size = ScrollContent.Size + new Vector2(GRID_SPACING * 2);
+        }
+
+        private Vector2 lastMatchesContainerMouseDownPosition;
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            lastMatchesContainerMouseDownPosition = MatchesContainer.ToLocalSpace(e.ScreenSpaceMouseDownPosition);
+            return base.OnMouseDown(e);
+        }
+
         private void updateMessage()
         {
             rightClickMessage.Alpha = LadderInfo.Matches.Count > 0 ? 0 : 1;
@@ -85,7 +105,8 @@ namespace osu.Game.Tournament.Screens.Editors
                 {
                     new OsuMenuItem("Create new match", MenuItemType.Highlighted, () =>
                     {
-                        Vector2 pos = MatchesContainer.ToLocalSpace(GetContainingInputManager().CurrentState.Mouse.Position);
+                        Vector2 pos = MatchesContainer.Count == 0 ? Vector2.Zero : lastMatchesContainerMouseDownPosition;
+
                         TournamentMatch newMatch = new TournamentMatch { Position = { Value = new Point((int)pos.X, (int)pos.Y) } };
 
                         LadderInfo.Matches.Add(newMatch);

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

@@ -57,12 +57,15 @@ namespace osu.Game.Tournament.Screens.Ladder
                     },
                     ScrollContent = new LadderDragContainer
                     {
-                        RelativeSizeAxes = Axes.Both,
+                        AutoSizeAxes = Axes.Both,
                         Children = new Drawable[]
                         {
                             paths = new Container<Path> { RelativeSizeAxes = Axes.Both },
                             headings = new Container { RelativeSizeAxes = Axes.Both },
-                            MatchesContainer = new Container<DrawableTournamentMatch> { RelativeSizeAxes = Axes.Both },
+                            MatchesContainer = new Container<DrawableTournamentMatch>
+                            {
+                                AutoSizeAxes = Axes.Both
+                            },
                         }
                     },
                 }

osu.Game/Overlays/FirstRunSetup/ScreenUIScale.cs

@@ -104,7 +104,7 @@ namespace osu.Game.Overlays.FirstRunSetup
         {
             protected override bool ControlGlobalMusic => false;
 
-            public override bool? AllowTrackAdjustments => false;
+            public override bool? ApplyModTrackAdjustments => false;
         }
 
         private partial class UIScaleSlider : RoundedSliderBar<float>

osu.Game/Overlays/Music/MusicKeyBindingHandler.cs

@@ -30,20 +30,14 @@ namespace osu.Game.Overlays.Music
         [Resolved]
         private OnScreenDisplay? onScreenDisplay { get; set; }
 
-        [Resolved]
-        private OsuGame game { get; set; } = null!;
-
         public bool OnPressed(KeyBindingPressEvent<GlobalAction> e)
         {
-            if (e.Repeat)
+            if (e.Repeat || !musicController.AllowTrackControl.Value)
                 return false;
 
             switch (e.Action)
             {
                 case GlobalAction.MusicPlay:
-                    if (game.LocalUserPlaying.Value)
-                        return false;
-
                     // use previous state as TogglePause may not update the track's state immediately (state update is run on the audio thread see https://github.com/ppy/osu/issues/9880#issuecomment-674668842)
                     bool wasPlaying = musicController.IsPlaying;
 

osu.Game/Overlays/MusicController.cs

@@ -40,6 +40,11 @@ namespace osu.Game.Overlays
         /// </summary>
         public bool UserPauseRequested { get; private set; }
 
+        /// <summary>
+        /// Whether user control of the global track should be allowed.
+        /// </summary>
+        public readonly BindableBool AllowTrackControl = new BindableBool(true);
+
         /// <summary>
         /// Fired when the global <see cref="WorkingBeatmap"/> has changed.
         /// Includes direction information for display purposes.
@@ -92,8 +97,10 @@ namespace osu.Game.Overlays
             seekDelegate?.Cancel();
             seekDelegate = Schedule(() =>
             {
-                if (!beatmap.Disabled)
-                    CurrentTrack.Seek(position);
+                if (beatmap.Disabled || !AllowTrackControl.Value)
+                    return;
+
+                CurrentTrack.Seek(position);
             });
         }
 
@@ -107,7 +114,7 @@ namespace osu.Game.Overlays
 
             if (CurrentTrack.IsDummyDevice || beatmap.Value.BeatmapSetInfo.DeletePending)
             {
-                if (beatmap.Disabled)
+                if (beatmap.Disabled || !AllowTrackControl.Value)
                     return;
 
                 Logger.Log($"{nameof(MusicController)} skipping next track to {nameof(EnsurePlayingSomething)}");
@@ -132,6 +139,9 @@ namespace osu.Game.Overlays
         /// <returns>Whether the operation was successful.</returns>
         public bool Play(bool restart = false, bool requestedByUser = false)
         {
+            if (requestedByUser && !AllowTrackControl.Value)
+                return false;
+
             if (requestedByUser)
                 UserPauseRequested = false;
 
@@ -153,6 +163,9 @@ namespace osu.Game.Overlays
         /// </param>
         public void Stop(bool requestedByUser = false)
         {
+            if (requestedByUser && !AllowTrackControl.Value)
+                return;
+
             UserPauseRequested |= requestedByUser;
             if (CurrentTrack.IsRunning)
                 CurrentTrack.StopAsync();
@@ -164,6 +177,9 @@ namespace osu.Game.Overlays
         /// <returns>Whether the operation was successful.</returns>
         public bool TogglePause()
         {
+            if (!AllowTrackControl.Value)
+                return false;
+
             if (CurrentTrack.IsRunning)
                 Stop(true);
             else
@@ -189,7 +205,7 @@ namespace osu.Game.Overlays
         /// <returns>The <see cref="PreviousTrackResult"/> that indicate the decided action.</returns>
         private PreviousTrackResult prev()
         {
-            if (beatmap.Disabled)
+            if (beatmap.Disabled || !AllowTrackControl.Value)
                 return PreviousTrackResult.None;
 
             double currentTrackPosition = CurrentTrack.CurrentTime;
@@ -229,7 +245,7 @@ namespace osu.Game.Overlays
 
         private bool next()
         {
-            if (beatmap.Disabled)
+            if (beatmap.Disabled || !AllowTrackControl.Value)
                 return false;
 
             queuedDirection = TrackChangeDirection.Next;
@@ -352,24 +368,24 @@ namespace osu.Game.Overlays
 
         private void onTrackCompleted()
         {
-            if (!CurrentTrack.Looping && !beatmap.Disabled)
+            if (!CurrentTrack.Looping && !beatmap.Disabled && AllowTrackControl.Value)
                 NextTrack();
         }
 
-        private bool allowTrackAdjustments;
+        private bool applyModTrackAdjustments;
 
         /// <summary>
         /// Whether mod track adjustments are allowed to be applied.
         /// </summary>
-        public bool AllowTrackAdjustments
+        public bool ApplyModTrackAdjustments
         {
-            get => allowTrackAdjustments;
+            get => applyModTrackAdjustments;
             set
             {
-                if (allowTrackAdjustments == value)
+                if (applyModTrackAdjustments == value)
                     return;
 
-                allowTrackAdjustments = value;
+                applyModTrackAdjustments = value;
                 ResetTrackAdjustments();
             }
         }
@@ -377,7 +393,7 @@ namespace osu.Game.Overlays
         private AudioAdjustments modTrackAdjustments;
 
         /// <summary>
-        /// Resets the adjustments currently applied on <see cref="CurrentTrack"/> and applies the mod adjustments if <see cref="AllowTrackAdjustments"/> is <c>true</c>.
+        /// Resets the adjustments currently applied on <see cref="CurrentTrack"/> and applies the mod adjustments if <see cref="ApplyModTrackAdjustments"/> is <c>true</c>.
         /// </summary>
         /// <remarks>
         /// Does not reset any adjustments applied directly to the beatmap track.
@@ -390,7 +406,7 @@ namespace osu.Game.Overlays
             CurrentTrack.RemoveAllAdjustments(AdjustableProperty.Tempo);
             CurrentTrack.RemoveAllAdjustments(AdjustableProperty.Volume);
 
-            if (allowTrackAdjustments)
+            if (applyModTrackAdjustments)
             {
                 CurrentTrack.BindAdjustments(modTrackAdjustments = new AudioAdjustments());
 

osu.Game/Overlays/NowPlayingOverlay.cs

@@ -1,13 +1,12 @@
 // 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 System.Threading.Tasks;
+using System.Threading;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -40,33 +39,35 @@ namespace osu.Game.Overlays
         private const float bottom_black_area_height = 55;
         private const float margin = 10;
 
-        private Drawable background;
-        private ProgressBar progressBar;
+        private Drawable background = null!;
+        private ProgressBar progressBar = null!;
 
-        private IconButton prevButton;
-        private IconButton playButton;
-        private IconButton nextButton;
-        private IconButton playlistButton;
+        private IconButton prevButton = null!;
+        private IconButton playButton = null!;
+        private IconButton nextButton = null!;
+        private IconButton playlistButton = null!;
 
-        private SpriteText title, artist;
+        private SpriteText title = null!, artist = null!;
 
-        private PlaylistOverlay playlist;
+        private PlaylistOverlay? playlist;
 
-        private Container dragContainer;
-        private Container playerContainer;
-        private Container playlistContainer;
+        private Container dragContainer = null!;
+        private Container playerContainer = null!;
+        private Container playlistContainer = null!;
 
         protected override string PopInSampleName => "UI/now-playing-pop-in";
         protected override string PopOutSampleName => "UI/now-playing-pop-out";
 
         [Resolved]
-        private MusicController musicController { get; set; }
+        private MusicController musicController { get; set; } = null!;
 
         [Resolved]
-        private Bindable<WorkingBeatmap> beatmap { get; set; }
+        private Bindable<WorkingBeatmap> beatmap { get; set; } = null!;
 
         [Resolved]
-        private OsuColour colours { get; set; }
+        private OsuColour colours { get; set; } = null!;
+
+        private Bindable<bool> allowTrackControl = null!;
 
         public NowPlayingOverlay()
         {
@@ -220,8 +221,10 @@ namespace osu.Game.Overlays
         {
             base.LoadComplete();
 
-            beatmap.BindDisabledChanged(_ => Scheduler.AddOnce(beatmapDisabledChanged));
-            beatmapDisabledChanged();
+            beatmap.BindDisabledChanged(_ => Scheduler.AddOnce(updateEnabledStates));
+
+            allowTrackControl = musicController.AllowTrackControl.GetBoundCopy();
+            allowTrackControl.BindValueChanged(_ => Scheduler.AddOnce(updateEnabledStates), true);
 
             musicController.TrackChanged += trackChanged;
             trackChanged(beatmap.Value);
@@ -286,31 +289,34 @@ namespace osu.Game.Overlays
             }
         }
 
-        private Action pendingBeatmapSwitch;
+        private Action? pendingBeatmapSwitch;
+
+        private CancellationTokenSource? backgroundLoadCancellation;
+
+        private WorkingBeatmap? currentBeatmap;
 
         private void trackChanged(WorkingBeatmap beatmap, TrackChangeDirection direction = TrackChangeDirection.None)
         {
+            currentBeatmap = beatmap;
+
             // avoid using scheduler as our scheduler may not be run for a long time, holding references to beatmaps.
             pendingBeatmapSwitch = delegate
             {
-                // todo: this can likely be replaced with WorkingBeatmap.GetBeatmapAsync()
-                Task.Run(() =>
-                {
-                    if (beatmap?.Beatmap == null) // this is not needed if a placeholder exists
-                    {
-                        title.Text = @"Nothing to play";
-                        artist.Text = @"Nothing to play";
-                    }
-                    else
-                    {
-                        BeatmapMetadata metadata = beatmap.Metadata;
-                        title.Text = new RomanisableString(metadata.TitleUnicode, metadata.Title);
-                        artist.Text = new RomanisableString(metadata.ArtistUnicode, metadata.Artist);
-                    }
-                });
+                BeatmapMetadata metadata = beatmap.Metadata;
+
+                title.Text = new RomanisableString(metadata.TitleUnicode, metadata.Title);
+                artist.Text = new RomanisableString(metadata.ArtistUnicode, metadata.Artist);
+
+                backgroundLoadCancellation?.Cancel();
 
                 LoadComponentAsync(new Background(beatmap) { Depth = float.MaxValue }, newBackground =>
                 {
+                    if (beatmap != currentBeatmap)
+                    {
+                        newBackground.Dispose();
+                        return;
+                    }
+
                     switch (direction)
                     {
                         case TrackChangeDirection.Next:
@@ -330,27 +336,29 @@ namespace osu.Game.Overlays
                     background = newBackground;
 
                     playerContainer.Add(newBackground);
-                });
+                }, (backgroundLoadCancellation = new CancellationTokenSource()).Token);
             };
         }
 
-        private void beatmapDisabledChanged()
+        private void updateEnabledStates()
         {
-            bool disabled = beatmap.Disabled;
+            bool beatmapDisabled = beatmap.Disabled;
+            bool trackControlDisabled = !musicController.AllowTrackControl.Value;
 
-            if (disabled)
+            if (beatmapDisabled || trackControlDisabled)
                 playlist?.Hide();
 
-            prevButton.Enabled.Value = !disabled;
-            nextButton.Enabled.Value = !disabled;
-            playlistButton.Enabled.Value = !disabled;
+            prevButton.Enabled.Value = !beatmapDisabled && !trackControlDisabled;
+            nextButton.Enabled.Value = !beatmapDisabled && !trackControlDisabled;
+            playlistButton.Enabled.Value = !beatmapDisabled && !trackControlDisabled;
+            playButton.Enabled.Value = !trackControlDisabled;
         }
 
         protected override void Dispose(bool isDisposing)
         {
             base.Dispose(isDisposing);
 
-            if (musicController != null)
+            if (musicController.IsNotNull())
                 musicController.TrackChanged -= trackChanged;
         }
 
@@ -383,7 +391,7 @@ namespace osu.Game.Overlays
             private readonly Sprite sprite;
             private readonly WorkingBeatmap beatmap;
 
-            public Background(WorkingBeatmap beatmap = null)
+            public Background(WorkingBeatmap beatmap)
                 : base(cachedFrameBuffer: true)
             {
                 this.beatmap = beatmap;
@@ -413,7 +421,7 @@ namespace osu.Game.Overlays
             [BackgroundDependencyLoader]
             private void load(LargeTextureStore textures)
             {
-                sprite.Texture = beatmap?.GetBackground() ?? textures.Get(@"Backgrounds/bg4");
+                sprite.Texture = beatmap.GetBackground() ?? textures.Get(@"Backgrounds/bg4");
             }
         }
 

osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs

@@ -16,6 +16,7 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Components.Menus;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
+using osu.Game.Utils;
 using osuTK;
 
 namespace osu.Game.Overlays.SkinEditor
@@ -25,31 +26,10 @@ namespace osu.Game.Overlays.SkinEditor
         [Resolved]
         private SkinEditor skinEditor { get; set; } = null!;
 
-        public override bool HandleRotation(float angle)
+        public override SelectionRotationHandler CreateRotationHandler() => new SkinSelectionRotationHandler
         {
-            if (SelectedBlueprints.Count == 1)
-            {
-                // for single items, rotate around the origin rather than the selection centre.
-                ((Drawable)SelectedBlueprints.First().Item).Rotation += angle;
-            }
-            else
-            {
-                var selectionQuad = getSelectionQuad();
-
-                foreach (var b in SelectedBlueprints)
-                {
-                    var drawableItem = (Drawable)b.Item;
-
-                    var rotatedPosition = RotatePointAroundOrigin(b.ScreenSpaceSelectionPoint, selectionQuad.Centre, angle);
-                    updateDrawablePosition(drawableItem, rotatedPosition);
-
-                    drawableItem.Rotation += angle;
-                }
-            }
-
-            // this isn't always the case but let's be lenient for now.
-            return true;
-        }
+            UpdatePosition = updateDrawablePosition
+        };
 
         public override bool HandleScale(Vector2 scale, Anchor anchor)
         {
@@ -137,7 +117,7 @@ namespace osu.Game.Overlays.SkinEditor
             {
                 var drawableItem = (Drawable)b.Item;
 
-                var flippedPosition = GetFlippedPosition(direction, flipOverOrigin ? drawableItem.Parent.ScreenSpaceDrawQuad : selectionQuad, b.ScreenSpaceSelectionPoint);
+                var flippedPosition = GeometryUtils.GetFlippedPosition(direction, flipOverOrigin ? drawableItem.Parent.ScreenSpaceDrawQuad : selectionQuad, b.ScreenSpaceSelectionPoint);
 
                 updateDrawablePosition(drawableItem, flippedPosition);
 
@@ -171,7 +151,6 @@ namespace osu.Game.Overlays.SkinEditor
         {
             base.OnSelectionChanged();
 
-            SelectionBox.CanRotate = true;
             SelectionBox.CanScaleX = true;
             SelectionBox.CanScaleY = true;
             SelectionBox.CanFlipX = true;
@@ -275,7 +254,7 @@ namespace osu.Game.Overlays.SkinEditor
         /// </summary>
         /// <returns></returns>
         private Quad getSelectionQuad() =>
-            GetSurroundingQuad(SelectedBlueprints.SelectMany(b => b.Item.ScreenSpaceDrawQuad.GetVertices().ToArray()));
+            GeometryUtils.GetSurroundingQuad(SelectedBlueprints.SelectMany(b => b.Item.ScreenSpaceDrawQuad.GetVertices().ToArray()));
 
         private void applyFixedAnchors(Anchor anchor)
         {

osu.Game/Overlays/SkinEditor/SkinSelectionRotationHandler.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 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.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 SkinSelectionRotationHandler : SelectionRotationHandler
+    {
+        public Action<Drawable, Vector2> UpdatePosition { get; init; } = null!;
+
+        [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()
+        {
+            CanRotate.Value = selectedItems.Count > 0;
+        }
+
+        private Drawable[]? objectsInRotation;
+
+        private Vector2? defaultOrigin;
+        private Dictionary<Drawable, float>? originalRotations;
+        private Dictionary<Drawable, Vector2>? originalPositions;
+
+        public override void Begin()
+        {
+            if (objectsInRotation != null)
+                throw new InvalidOperationException($"Cannot {nameof(Begin)} a rotate operation while another is in progress!");
+
+            changeHandler?.BeginChange();
+
+            objectsInRotation = selectedItems.Cast<Drawable>().ToArray();
+            originalRotations = objectsInRotation.ToDictionary(d => d, d => d.Rotation);
+            originalPositions = objectsInRotation.ToDictionary(d => d, d => d.ToScreenSpace(d.OriginPosition));
+            defaultOrigin = GeometryUtils.GetSurroundingQuad(objectsInRotation.SelectMany(d => d.ScreenSpaceDrawQuad.GetVertices().ToArray())).Centre;
+        }
+
+        public override void Update(float rotation, Vector2? origin = null)
+        {
+            if (objectsInRotation == null)
+                throw new InvalidOperationException($"Cannot {nameof(Update)} a rotate operation without calling {nameof(Begin)} first!");
+
+            Debug.Assert(originalRotations != null && originalPositions != null && defaultOrigin != null);
+
+            if (objectsInRotation.Length == 1 && origin == null)
+            {
+                // for single items, rotate around the origin rather than the selection centre by default.
+                objectsInRotation[0].Rotation = originalRotations.Single().Value + rotation;
+                return;
+            }
+
+            var actualOrigin = origin ?? defaultOrigin.Value;
+
+            foreach (var drawableItem in objectsInRotation)
+            {
+                var rotatedPosition = GeometryUtils.RotatePointAroundOrigin(originalPositions[drawableItem], actualOrigin, rotation);
+                UpdatePosition(drawableItem, rotatedPosition);
+
+                drawableItem.Rotation = originalRotations[drawableItem] + rotation;
+            }
+        }
+
+        public override void Commit()
+        {
+            if (objectsInRotation == null)
+                throw new InvalidOperationException($"Cannot {nameof(Commit)} a rotate operation without calling {nameof(Begin)} first!");
+
+            changeHandler?.EndChange();
+
+            objectsInRotation = null;
+            originalPositions = null;
+            originalRotations = null;
+            defaultOrigin = null;
+        }
+    }
+}

osu.Game/Rulesets/Edit/HitObjectComposer.cs

@@ -44,6 +44,11 @@ namespace osu.Game.Rulesets.Edit
     public abstract partial class HitObjectComposer<TObject> : HitObjectComposer, IPlacementHandler
         where TObject : HitObject
     {
+        /// <summary>
+        /// Whether the playfield should be centered horizontally. Should be disabled for playfields which span the full horizontal width.
+        /// </summary>
+        protected virtual bool ApplyHorizontalCentering => true;
+
         protected IRulesetConfigManager Config { get; private set; }
 
         // Provides `Playfield`
@@ -119,8 +124,6 @@ namespace osu.Game.Rulesets.Edit
                 {
                     Name = "Playfield content",
                     RelativeSizeAxes = Axes.Y,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
                     Children = new Drawable[]
                     {
                         // layers below playfield
@@ -241,8 +244,23 @@ namespace osu.Game.Rulesets.Edit
         {
             base.Update();
 
-            // Ensure that the playfield is always centered but also doesn't get cut off by toolboxes.
-            PlayfieldContentContainer.Width = Math.Max(1024, DrawWidth) - TOOLBOX_CONTRACTED_SIZE_RIGHT * 2;
+            if (ApplyHorizontalCentering)
+            {
+                PlayfieldContentContainer.Anchor = Anchor.Centre;
+                PlayfieldContentContainer.Origin = Anchor.Centre;
+
+                // Ensure that the playfield is always centered but also doesn't get cut off by toolboxes.
+                PlayfieldContentContainer.Width = Math.Max(1024, DrawWidth) - TOOLBOX_CONTRACTED_SIZE_RIGHT * 2;
+                PlayfieldContentContainer.X = 0;
+            }
+            else
+            {
+                PlayfieldContentContainer.Anchor = Anchor.CentreLeft;
+                PlayfieldContentContainer.Origin = Anchor.CentreLeft;
+
+                PlayfieldContentContainer.Width = Math.Max(1024, DrawWidth) - (TOOLBOX_CONTRACTED_SIZE_LEFT + TOOLBOX_CONTRACTED_SIZE_RIGHT);
+                PlayfieldContentContainer.X = TOOLBOX_CONTRACTED_SIZE_LEFT;
+            }
         }
 
         public override Playfield Playfield => drawableRulesetWrapper.Playfield;

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

@@ -54,7 +54,10 @@ namespace osu.Game.Screens.Edit.Compose.Components
             if (!gridCache.IsValid)
             {
                 ClearInternal();
-                createContent();
+
+                if (DrawWidth > 0 && DrawHeight > 0)
+                    createContent();
+
                 gridCache.Validate();
             }
         }

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

@@ -3,6 +3,7 @@
 
 using System;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -22,7 +23,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         private const float button_padding = 5;
 
-        public Func<float, bool>? OnRotation;
+        [Resolved]
+        private SelectionRotationHandler? rotationHandler { get; set; }
+
         public Func<Vector2, Anchor, bool>? OnScale;
         public Func<Direction, bool, bool>? OnFlip;
         public Func<bool>? OnReverse;
@@ -51,22 +54,7 @@ namespace osu.Game.Screens.Edit.Compose.Components
             }
         }
 
-        private bool canRotate;
-
-        /// <summary>
-        /// Whether rotation support should be enabled.
-        /// </summary>
-        public bool CanRotate
-        {
-            get => canRotate;
-            set
-            {
-                if (canRotate == value) return;
-
-                canRotate = value;
-                recreate();
-            }
-        }
+        private readonly IBindable<bool> canRotate = new BindableBool();
 
         private bool canScaleX;
 
@@ -161,7 +149,13 @@ namespace osu.Game.Screens.Edit.Compose.Components
         private OsuColour colours { get; set; } = null!;
 
         [BackgroundDependencyLoader]
-        private void load() => recreate();
+        private void load()
+        {
+            if (rotationHandler != null)
+                canRotate.BindTo(rotationHandler.CanRotate);
+
+            canRotate.BindValueChanged(_ => recreate(), true);
+        }
 
         protected override bool OnKeyDown(KeyDownEvent e)
         {
@@ -174,10 +168,10 @@ namespace osu.Game.Screens.Edit.Compose.Components
                     return CanReverse && reverseButton?.TriggerClick() == true;
 
                 case Key.Comma:
-                    return CanRotate && rotateCounterClockwiseButton?.TriggerClick() == true;
+                    return canRotate.Value && rotateCounterClockwiseButton?.TriggerClick() == true;
 
                 case Key.Period:
-                    return CanRotate && rotateClockwiseButton?.TriggerClick() == true;
+                    return canRotate.Value && rotateClockwiseButton?.TriggerClick() == true;
             }
 
             return base.OnKeyDown(e);
@@ -254,14 +248,14 @@ namespace osu.Game.Screens.Edit.Compose.Components
             if (CanScaleY) addYScaleComponents();
             if (CanFlipX) addXFlipComponents();
             if (CanFlipY) addYFlipComponents();
-            if (CanRotate) addRotationComponents();
+            if (canRotate.Value) addRotationComponents();
             if (CanReverse) reverseButton = addButton(FontAwesome.Solid.Backward, "Reverse pattern (Ctrl-G)", () => OnReverse?.Invoke());
         }
 
         private void addRotationComponents()
         {
-            rotateCounterClockwiseButton = addButton(FontAwesome.Solid.Undo, "Rotate 90 degrees counter-clockwise (Ctrl-<)", () => OnRotation?.Invoke(-90));
-            rotateClockwiseButton = addButton(FontAwesome.Solid.Redo, "Rotate 90 degrees clockwise (Ctrl->)", () => OnRotation?.Invoke(90));
+            rotateCounterClockwiseButton = addButton(FontAwesome.Solid.Undo, "Rotate 90 degrees counter-clockwise (Ctrl-<)", () => rotationHandler?.Rotate(-90));
+            rotateClockwiseButton = addButton(FontAwesome.Solid.Redo, "Rotate 90 degrees clockwise (Ctrl->)", () => rotationHandler?.Rotate(90));
 
             addRotateHandle(Anchor.TopLeft);
             addRotateHandle(Anchor.TopRight);
@@ -331,7 +325,6 @@ namespace osu.Game.Screens.Edit.Compose.Components
             var handle = new SelectionBoxRotationHandle
             {
                 Anchor = anchor,
-                HandleRotate = angle => OnRotation?.Invoke(angle)
             };
 
             handle.OperationStarted += operationStarted;

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

@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -15,24 +13,25 @@ using osu.Framework.Localisation;
 using osu.Game.Localisation;
 using osuTK;
 using osuTK.Graphics;
-using Key = osuTK.Input.Key;
+using osuTK.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
     public partial class SelectionBoxRotationHandle : SelectionBoxDragHandle, IHasTooltip
     {
-        public Action<float> HandleRotate { get; set; }
-
         public LocalisableString TooltipText { get; private set; }
 
-        private SpriteIcon icon;
+        private SpriteIcon icon = null!;
 
         private const float snap_step = 15;
 
         private readonly Bindable<float?> cumulativeRotation = new Bindable<float?>();
 
         [Resolved]
-        private SelectionBox selectionBox { get; set; }
+        private SelectionBox selectionBox { get; set; } = null!;
+
+        [Resolved]
+        private SelectionRotationHandler? rotationHandler { get; set; }
 
         [BackgroundDependencyLoader]
         private void load()
@@ -63,10 +62,10 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         protected override bool OnDragStart(DragStartEvent e)
         {
-            bool handle = base.OnDragStart(e);
-            if (handle)
-                cumulativeRotation.Value = 0;
-            return handle;
+            if (rotationHandler == null) return false;
+
+            rotationHandler.Begin();
+            return true;
         }
 
         protected override void OnDrag(DragEvent e)
@@ -99,7 +98,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         protected override void OnDragEnd(DragEndEvent e)
         {
-            base.OnDragEnd(e);
+            rotationHandler?.Commit();
+            UpdateHoverState();
+
             cumulativeRotation.Value = null;
             rawCumulativeRotation = 0;
             TooltipText = default;
@@ -116,14 +117,12 @@ namespace osu.Game.Screens.Edit.Compose.Components
 
         private void applyRotation(bool shouldSnap)
         {
-            float oldRotation = cumulativeRotation.Value ?? 0;
-
             float newRotation = shouldSnap ? snap(rawCumulativeRotation, snap_step) : MathF.Round(rawCumulativeRotation);
             newRotation = (newRotation - 180) % 360 + 180;
 
             cumulativeRotation.Value = newRotation;
 
-            HandleRotate?.Invoke(newRotation - oldRotation);
+            rotationHandler?.Update(newRotation);
             TooltipText = shouldSnap ? EditorStrings.RotationSnapped(newRotation) : EditorStrings.RotationUnsnapped(newRotation);
         }
 

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

@@ -16,7 +16,6 @@ using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
-using osu.Framework.Utils;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Resources.Localisation.Web;
@@ -56,6 +55,8 @@ namespace osu.Game.Screens.Edit.Compose.Components
         [Resolved(CanBeNull = true)]
         protected IEditorChangeHandler ChangeHandler { get; private set; }
 
+        protected SelectionRotationHandler RotationHandler { get; private set; }
+
         protected SelectionHandler()
         {
             selectedBlueprints = new List<SelectionBlueprint<T>>();
@@ -64,10 +65,21 @@ namespace osu.Game.Screens.Edit.Compose.Components
             AlwaysPresent = true;
         }
 
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+        {
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
+            dependencies.CacheAs(RotationHandler = CreateRotationHandler());
+            return dependencies;
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {
-            InternalChild = SelectionBox = CreateSelectionBox();
+            AddRangeInternal(new Drawable[]
+            {
+                RotationHandler,
+                SelectionBox = CreateSelectionBox(),
+            });
 
             SelectedItems.CollectionChanged += (_, _) =>
             {
@@ -81,7 +93,6 @@ namespace osu.Game.Screens.Edit.Compose.Components
                 OperationStarted = OnOperationBegan,
                 OperationEnded = OnOperationEnded,
 
-                OnRotation = HandleRotation,
                 OnScale = HandleScale,
                 OnFlip = HandleFlip,
                 OnReverse = HandleReverse,
@@ -133,6 +144,11 @@ namespace osu.Game.Screens.Edit.Compose.Components
         /// <returns>Whether any items could be rotated.</returns>
         public virtual bool HandleRotation(float angle) => false;
 
+        /// <summary>
+        /// Creates the handler to use for rotation operations.
+        /// </summary>
+        public virtual SelectionRotationHandler CreateRotationHandler() => new SelectionRotationHandler();
+
         /// <summary>
         /// Handles the selected items being scaled.
         /// </summary>
@@ -401,98 +417,5 @@ namespace osu.Game.Screens.Edit.Compose.Components
             => Enumerable.Empty<MenuItem>();
 
         #endregion
-
-        #region Helper Methods
-
-        /// <summary>
-        /// Rotate a point around an arbitrary origin.
-        /// </summary>
-        /// <param name="point">The point.</param>
-        /// <param name="origin">The centre origin to rotate around.</param>
-        /// <param name="angle">The angle to rotate (in degrees).</param>
-        protected static Vector2 RotatePointAroundOrigin(Vector2 point, Vector2 origin, float angle)
-        {
-            angle = -angle;
-
-            point.X -= origin.X;
-            point.Y -= origin.Y;
-
-            Vector2 ret;
-            ret.X = point.X * MathF.Cos(MathUtils.DegreesToRadians(angle)) + point.Y * MathF.Sin(MathUtils.DegreesToRadians(angle));
-            ret.Y = point.X * -MathF.Sin(MathUtils.DegreesToRadians(angle)) + point.Y * MathF.Cos(MathUtils.DegreesToRadians(angle));
-
-            ret.X += origin.X;
-            ret.Y += origin.Y;
-
-            return ret;
-        }
-
-        /// <summary>
-        /// Given a flip direction, a surrounding quad for all selected objects, and a position,
-        /// will return the flipped position in screen space coordinates.
-        /// </summary>
-        protected static Vector2 GetFlippedPosition(Direction direction, Quad quad, Vector2 position)
-        {
-            var centre = quad.Centre;
-
-            switch (direction)
-            {
-                case Direction.Horizontal:
-                    position.X = centre.X - (position.X - centre.X);
-                    break;
-
-                case Direction.Vertical:
-                    position.Y = centre.Y - (position.Y - centre.Y);
-                    break;
-            }
-
-            return position;
-        }
-
-        /// <summary>
-        /// Given a scale vector, a surrounding quad for all selected objects, and a position,
-        /// will return the scaled position in screen space coordinates.
-        /// </summary>
-        protected static Vector2 GetScaledPosition(Anchor reference, Vector2 scale, Quad selectionQuad, Vector2 position)
-        {
-            // adjust the direction of scale depending on which side the user is dragging.
-            float xOffset = ((reference & Anchor.x0) > 0) ? -scale.X : 0;
-            float yOffset = ((reference & Anchor.y0) > 0) ? -scale.Y : 0;
-
-            // guard against no-ops and NaN.
-            if (scale.X != 0 && selectionQuad.Width > 0)
-                position.X = selectionQuad.TopLeft.X + xOffset + (position.X - selectionQuad.TopLeft.X) / selectionQuad.Width * (selectionQuad.Width + scale.X);
-
-            if (scale.Y != 0 && selectionQuad.Height > 0)
-                position.Y = selectionQuad.TopLeft.Y + yOffset + (position.Y - selectionQuad.TopLeft.Y) / selectionQuad.Height * (selectionQuad.Height + scale.Y);
-
-            return position;
-        }
-
-        /// <summary>
-        /// Returns a quad surrounding the provided points.
-        /// </summary>
-        /// <param name="points">The points to calculate a quad for.</param>
-        protected static Quad GetSurroundingQuad(IEnumerable<Vector2> points)
-        {
-            if (!points.Any())
-                return new Quad();
-
-            Vector2 minPosition = new Vector2(float.MaxValue, float.MaxValue);
-            Vector2 maxPosition = new Vector2(float.MinValue, float.MinValue);
-
-            // Go through all hitobjects to make sure they would remain in the bounds of the editor after movement, before any movement is attempted
-            foreach (var p in points)
-            {
-                minPosition = Vector2.ComponentMin(minPosition, p);
-                maxPosition = Vector2.ComponentMax(maxPosition, p);
-            }
-
-            Vector2 size = maxPosition - minPosition;
-
-            return new Quad(minPosition.X, minPosition.Y, size.X, size.Y);
-        }
-
-        #endregion
     }
 }

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

@@ -0,0 +1,85 @@
+// 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 osuTK;
+
+namespace osu.Game.Screens.Edit.Compose.Components
+{
+    /// <summary>
+    /// Base handler for editor rotation operations.
+    /// </summary>
+    public partial class SelectionRotationHandler : Component
+    {
+        /// <summary>
+        /// Whether the rotation can currently be performed.
+        /// </summary>
+        public Bindable<bool> CanRotate { get; private set; } = new BindableBool();
+
+        /// <summary>
+        /// Performs a single, instant, atomic rotation 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="rotation">Rotation to apply in degrees.</param>
+        /// <param name="origin">
+        /// The origin point to rotate around.
+        /// If the default <see langword="null"/> value is supplied, a sane implementation-defined default will be used.
+        /// </param>
+        public void Rotate(float rotation, Vector2? origin = null)
+        {
+            Begin();
+            Update(rotation, origin);
+            Commit();
+        }
+
+        /// <summary>
+        /// Begins a continuous rotation operation.
+        /// </summary>
+        /// <remarks>
+        /// This flow is intended to be used when a rotation operation is made incrementally (such as when dragging a rotation handle or slider).
+        /// For instantaneous, atomic operations, use the convenience <see cref="Rotate"/> method.
+        /// </remarks>
+        public virtual void Begin()
+        {
+        }
+
+        /// <summary>
+        /// Updates a continuous rotation operation.
+        /// Must be preceded by a <see cref="Begin"/> call.
+        /// </summary>
+        /// <remarks>
+        /// <para>
+        /// This flow is intended to be used when a rotation operation is made incrementally (such as when dragging a rotation handle or slider).
+        /// As such, the values of <paramref name="rotation"/> and <paramref name="origin"/> supplied should be relative to the state of the objects being rotated
+        /// when <see cref="Begin"/> was called, rather than instantaneous deltas.
+        /// </para>
+        /// <para>
+        /// For instantaneous, atomic operations, use the convenience <see cref="Rotate"/> method.
+        /// </para>
+        /// </remarks>
+        /// <param name="rotation">Rotation to apply in degrees.</param>
+        /// <param name="origin">
+        /// The origin point to rotate around.
+        /// If the default <see langword="null"/> value is supplied, a sane implementation-defined default will be used.
+        /// </param>
+        public virtual void Update(float rotation, Vector2? origin = null)
+        {
+        }
+
+        /// <summary>
+        /// Ends a continuous rotation operation.
+        /// Must be preceded by a <see cref="Begin"/> call.
+        /// </summary>
+        /// <remarks>
+        /// This flow is intended to be used when a rotation operation is made incrementally (such as when dragging a rotation handle or slider).
+        /// For instantaneous, atomic operations, use the convenience <see cref="Rotate"/> method.
+        /// </remarks>
+        public virtual void Commit()
+        {
+        }
+    }
+}

osu.Game/Screens/Edit/Editor.cs

@@ -66,7 +66,7 @@ namespace osu.Game.Screens.Edit
 
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
-        public override bool? AllowTrackAdjustments => false;
+        public override bool? ApplyModTrackAdjustments => false;
 
         protected override bool PlayExitSound => !ExitConfirmed && !switchingDifficulty;
 

osu.Game/Screens/Edit/EditorLoader.cs

@@ -42,6 +42,8 @@ namespace osu.Game.Screens.Edit
 
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
+        public override bool? AllowGlobalTrackControl => false;
+
         [Resolved]
         private BeatmapManager beatmapManager { get; set; }
 

osu.Game/Screens/IOsuScreen.cs

@@ -67,7 +67,13 @@ namespace osu.Game.Screens
         /// Whether mod track adjustments should be applied on entering this screen.
         /// A <see langword="null"/> value means that the parent screen's value of this setting will be used.
         /// </summary>
-        bool? AllowTrackAdjustments { get; }
+        bool? ApplyModTrackAdjustments { get; }
+
+        /// <summary>
+        /// Whether control of the global track should be allowed via the music controller / now playing overlay.
+        /// A <see langword="null"/> value means that the parent screen's value of this setting will be used.
+        /// </summary>
+        bool? AllowGlobalTrackControl { get; }
 
         /// <summary>
         /// Invoked when the back button has been pressed to close any overlays before exiting this <see cref="IOsuScreen"/>.

osu.Game/Screens/Menu/MainMenu.cs

@@ -5,6 +5,7 @@
 
 using System;
 using System.Diagnostics;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -202,6 +203,9 @@ namespace osu.Game.Screens.Menu
                 dialogOverlay?.Push(new StorageErrorDialog(osuStorage, osuStorage.Error));
         }
 
+        [CanBeNull]
+        private Drawable proxiedLogo;
+
         protected override void LogoArriving(OsuLogo logo, bool resuming)
         {
             base.LogoArriving(logo, resuming);
@@ -211,7 +215,7 @@ namespace osu.Game.Screens.Menu
             logo.FadeColour(Color4.White, 100, Easing.OutQuint);
             logo.FadeIn(100, Easing.OutQuint);
 
-            logo.ProxyToContainer(logoTarget);
+            proxiedLogo = logo.ProxyToContainer(logoTarget);
 
             if (resuming)
             {
@@ -250,12 +254,27 @@ namespace osu.Game.Screens.Menu
             var seq = logo.FadeOut(300, Easing.InSine)
                           .ScaleTo(0.2f, 300, Easing.InSine);
 
-            logo.ReturnProxy();
+            if (proxiedLogo != null)
+            {
+                logo.ReturnProxy();
+                proxiedLogo = null;
+            }
 
             seq.OnComplete(_ => Buttons.SetOsuLogo(null));
             seq.OnAbort(_ => Buttons.SetOsuLogo(null));
         }
 
+        protected override void LogoExiting(OsuLogo logo)
+        {
+            base.LogoExiting(logo);
+
+            if (proxiedLogo != null)
+            {
+                logo.ReturnProxy();
+                proxiedLogo = null;
+            }
+        }
+
         public override void OnSuspending(ScreenTransitionEvent e)
         {
             base.OnSuspending(e);

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

@@ -41,7 +41,7 @@ namespace osu.Game.Screens.OnlinePlay.Match
         [Cached(typeof(IBindable<PlaylistItem>))]
         public readonly Bindable<PlaylistItem> SelectedItem = new Bindable<PlaylistItem>();
 
-        public override bool? AllowTrackAdjustments => true;
+        public override bool? ApplyModTrackAdjustments => true;
 
         protected override BackgroundScreen CreateBackground() => new RoomBackgroundScreen(Room.Playlist.FirstOrDefault())
         {

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

@@ -265,7 +265,8 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                     dialogOverlay.Push(new ConfirmDialog("Are you sure you want to leave this multiplayer match?", () =>
                     {
                         exitConfirmed = true;
-                        this.Exit();
+                        if (this.IsCurrentScreen())
+                            this.Exit();
                     }));
                 }
 

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

@@ -29,7 +29,9 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
         // We are managing our own adjustments. For now, this happens inside the Player instances themselves.
-        public override bool? AllowTrackAdjustments => false;
+        public override bool? ApplyModTrackAdjustments => false;
+
+        public override bool HideOverlaysOnEnter => true;
 
         /// <summary>
         /// Whether all spectating players have finished loading.

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

@@ -67,7 +67,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             SpectatorPlayerClock = clock;
 
             RelativeSizeAxes = Axes.Both;
-            Masking = true;
 
             AudioContainer audioContainer;
             InternalChildren = new Drawable[]

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

@@ -7,6 +7,7 @@ using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osuTK;
+using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
 {
@@ -15,20 +16,21 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
     /// </summary>
     public partial class PlayerGrid : CompositeDrawable
     {
+        public const float ANIMATION_DELAY = 400;
+
         /// <summary>
         /// A temporary limitation on the number of players, because only layouts up to 16 players are supported for a single screen.
         /// Todo: Can be removed in the future with scrolling support + performance improvements.
         /// </summary>
         public const int MAX_PLAYERS = 16;
 
-        private const float player_spacing = 5;
+        private const float player_spacing = 6;
 
         /// <summary>
         /// The currently-maximised facade.
         /// </summary>
-        public Drawable MaximisedFacade => maximisedFacade;
+        public Facade MaximisedFacade { get; }
 
-        private readonly Facade maximisedFacade;
         private readonly Container paddingContainer;
         private readonly FillFlowContainer<Facade> facadeContainer;
         private readonly Container<Cell> cellContainer;
@@ -48,12 +50,18 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
                             RelativeSizeAxes = Axes.Both,
                             Child = facadeContainer = new FillFlowContainer<Facade>
                             {
+                                Anchor = Anchor.Centre,
+                                Origin = Anchor.Centre,
                                 RelativeSizeAxes = Axes.X,
                                 AutoSizeAxes = Axes.Y,
                                 Spacing = new Vector2(player_spacing),
                             }
                         },
-                        maximisedFacade = new Facade { RelativeSizeAxes = Axes.Both }
+                        MaximisedFacade = new Facade
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Size = new Vector2(0.8f),
+                        }
                     }
                 },
                 cellContainer = new Container<Cell> { RelativeSizeAxes = Axes.Both }
@@ -75,8 +83,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             var facade = new Facade();
             facadeContainer.Add(facade);
 
-            var cell = new Cell(index, content) { ToggleMaximisationState = toggleMaximisationState };
-            cell.SetFacade(facade);
+            var cell = new Cell(index, content, facade) { ToggleMaximisationState = toggleMaximisationState };
 
             cellContainer.Add(cell);
         }
@@ -91,26 +98,28 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
 
         private void toggleMaximisationState(Cell target)
         {
-            // Iterate through all cells to ensure only one is maximised at any time.
-            foreach (var i in cellContainer.ToList())
-            {
-                if (i == target)
-                    i.IsMaximised = !i.IsMaximised;
-                else
-                    i.IsMaximised = false;
+            // in the case the target is the already maximised cell (or there is only one cell), no cell should be maximised.
+            bool hasMaximised = !target.IsMaximised && cellContainer.Count > 1;
 
-                if (i.IsMaximised)
+            // Iterate through all cells to ensure only one is maximised at any time.
+            foreach (var cell in cellContainer.ToList())
+            {
+                if (hasMaximised && cell == target)
                 {
                     // Transfer cell to the maximised facade.
-                    i.SetFacade(maximisedFacade);
-                    cellContainer.ChangeChildDepth(i, maximisedInstanceDepth -= 0.001f);
+                    cell.SetFacade(MaximisedFacade, true);
+                    cellContainer.ChangeChildDepth(cell, maximisedInstanceDepth -= 0.001f);
                 }
                 else
                 {
                     // Transfer cell back to its original facade.
-                    i.SetFacade(facadeContainer[i.FacadeIndex]);
+                    cell.SetFacade(facadeContainer[cell.FacadeIndex], false);
                 }
+
+                cell.FadeColour(hasMaximised && cell != target ? Color4.Gray : Color4.White, ANIMATION_DELAY, Easing.OutQuint);
             }
+
+            facadeContainer.ScaleTo(hasMaximised ? 0.95f : 1, ANIMATION_DELAY, Easing.OutQuint);
         }
 
         protected override void Update()
@@ -169,5 +178,17 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             foreach (var cell in facadeContainer)
                 cell.Size = cellSize;
         }
+
+        /// <summary>
+        /// A facade of the grid which is used as a dummy object to store the required position/size of cells.
+        /// </summary>
+        public partial class Facade : Drawable
+        {
+            public Facade()
+            {
+                Anchor = Anchor.Centre;
+                Origin = Anchor.Centre;
+            }
+        }
     }
 }

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

@@ -1,13 +1,12 @@
 // 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 JetBrains.Annotations;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Effects;
 using osu.Framework.Input.Events;
+using osu.Framework.Utils;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
@@ -32,68 +31,79 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             /// <summary>
             /// An action that toggles the maximisation state of this cell.
             /// </summary>
-            public Action<Cell> ToggleMaximisationState;
+            public Action<Cell>? ToggleMaximisationState;
 
             /// <summary>
             /// Whether this cell is currently maximised.
             /// </summary>
-            public bool IsMaximised;
+            public bool IsMaximised { get; private set; }
 
             private Facade facade;
-            private bool isTracking = true;
 
-            public Cell(int facadeIndex, Drawable content)
+            private bool isAnimating;
+
+            public Cell(int facadeIndex, Drawable content, Facade facade)
             {
                 FacadeIndex = facadeIndex;
+                this.facade = facade;
 
                 Origin = Anchor.Centre;
                 InternalChild = Content = content;
+
+                Masking = true;
+                CornerRadius = 5;
             }
 
             protected override void Update()
             {
                 base.Update();
 
-                if (isTracking)
-                {
-                    Position = getFinalPosition();
-                    Size = getFinalSize();
-                }
+                var targetPos = getFinalPosition();
+                var targetSize = getFinalSize();
+
+                double duration = isAnimating ? 60 : 0;
+
+                Position = new Vector2(
+                    (float)Interpolation.DampContinuously(Position.X, targetPos.X, duration, Time.Elapsed),
+                    (float)Interpolation.DampContinuously(Position.Y, targetPos.Y, duration, Time.Elapsed)
+                );
+
+                Size = new Vector2(
+                    (float)Interpolation.DampContinuously(Size.X, targetSize.X, duration, Time.Elapsed),
+                    (float)Interpolation.DampContinuously(Size.Y, targetSize.Y, duration, Time.Elapsed)
+                );
+
+                // If we don't track the animating state, the animation will also occur when resizing the window.
+                isAnimating &= !Precision.AlmostEquals(Position, targetPos, 0.01f);
             }
 
             /// <summary>
             /// Makes this cell track a new facade.
             /// </summary>
-            public void SetFacade([NotNull] Facade newFacade)
+            public void SetFacade(Facade newFacade, bool isMaximised)
             {
-                Facade lastFacade = facade;
                 facade = newFacade;
+                IsMaximised = isMaximised;
+                isAnimating = true;
 
-                if (lastFacade == null || lastFacade == newFacade)
-                    return;
-
-                isTracking = false;
-
-                this.MoveTo(getFinalPosition(), 400, Easing.OutQuint).ResizeTo(getFinalSize(), 400, Easing.OutQuint)
-                    .Then()
-                    .OnComplete(_ =>
-                    {
-                        if (facade == newFacade)
-                            isTracking = true;
-                    });
+                TweenEdgeEffectTo(new EdgeEffectParameters
+                {
+                    Type = EdgeEffectType.Shadow,
+                    Radius = isMaximised ? 30 : 10,
+                    Colour = Colour4.Black.Opacity(isMaximised ? 0.5f : 0.2f),
+                }, ANIMATION_DELAY, Easing.OutQuint);
             }
 
-            private Vector2 getFinalPosition()
-            {
-                var topLeft = Parent.ToLocalSpace(facade.ToScreenSpace(Vector2.Zero));
-                return topLeft + facade.DrawSize / 2;
-            }
+            private Vector2 getFinalPosition() =>
+                Parent.ToLocalSpace(facade.ScreenSpaceDrawQuad.Centre);
 
-            private Vector2 getFinalSize() => facade.DrawSize;
+            private Vector2 getFinalSize() =>
+                Parent.ToLocalSpace(facade.ScreenSpaceDrawQuad.BottomRight)
+                - Parent.ToLocalSpace(facade.ScreenSpaceDrawQuad.TopLeft);
 
             protected override bool OnClick(ClickEvent e)
             {
-                ToggleMaximisationState(this);
+                ToggleMaximisationState?.Invoke(this);
                 return true;
             }
         }

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

@@ -1,22 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Framework.Graphics;
-
-namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
-{
-    public partial class PlayerGrid
-    {
-        /// <summary>
-        /// A facade of the grid which is used as a dummy object to store the required position/size of cells.
-        /// </summary>
-        private partial class Facade : Drawable
-        {
-            public Facade()
-            {
-                Anchor = Anchor.Centre;
-                Origin = Anchor.Centre;
-            }
-        }
-    }
-}

osu.Game/Screens/OsuScreen.cs

@@ -85,7 +85,9 @@ namespace osu.Game.Screens
         [Resolved]
         private MusicController musicController { get; set; }
 
-        public virtual bool? AllowTrackAdjustments => null;
+        public virtual bool? ApplyModTrackAdjustments => null;
+
+        public virtual bool? AllowGlobalTrackControl => null;
 
         public Bindable<WorkingBeatmap> Beatmap { get; private set; }
 
@@ -95,7 +97,9 @@ namespace osu.Game.Screens
 
         private OsuScreenDependencies screenDependencies;
 
-        private bool? trackAdjustmentStateAtSuspend;
+        private bool? globalMusicControlStateAtSuspend;
+
+        private bool? modTrackAdjustmentStateAtSuspend;
 
         internal void CreateLeasedDependencies(IReadOnlyDependencyContainer dependencies) => createDependencies(dependencies);
 
@@ -178,8 +182,10 @@ namespace osu.Game.Screens
 
             // it's feasible to resume to a screen if the target screen never loaded successfully.
             // in such a case there's no need to restore this value.
-            if (trackAdjustmentStateAtSuspend != null)
-                musicController.AllowTrackAdjustments = trackAdjustmentStateAtSuspend.Value;
+            if (modTrackAdjustmentStateAtSuspend != null)
+                musicController.ApplyModTrackAdjustments = modTrackAdjustmentStateAtSuspend.Value;
+            if (globalMusicControlStateAtSuspend != null)
+                musicController.AllowTrackControl.Value = globalMusicControlStateAtSuspend.Value;
 
             base.OnResuming(e);
         }
@@ -188,7 +194,8 @@ namespace osu.Game.Screens
         {
             base.OnSuspending(e);
 
-            trackAdjustmentStateAtSuspend = musicController.AllowTrackAdjustments;
+            modTrackAdjustmentStateAtSuspend = musicController.ApplyModTrackAdjustments;
+            globalMusicControlStateAtSuspend = musicController.AllowTrackControl.Value;
 
             onSuspendingLogo();
         }
@@ -197,8 +204,11 @@ namespace osu.Game.Screens
         {
             applyArrivingDefaults(false);
 
-            if (AllowTrackAdjustments != null)
-                musicController.AllowTrackAdjustments = AllowTrackAdjustments.Value;
+            if (ApplyModTrackAdjustments != null)
+                musicController.ApplyModTrackAdjustments = ApplyModTrackAdjustments.Value;
+
+            if (AllowGlobalTrackControl != null)
+                musicController.AllowTrackControl.Value = AllowGlobalTrackControl.Value;
 
             if (backgroundStack?.Push(ownedBackground = CreateBackground()) != true)
             {

osu.Game/Screens/Play/Player.cs

@@ -70,7 +70,7 @@ namespace osu.Game.Screens.Play
         protected override OverlayActivation InitialOverlayActivationMode => OverlayActivation.UserTriggered;
 
         // We are managing our own adjustments (see OnEntering/OnExiting).
-        public override bool? AllowTrackAdjustments => false;
+        public override bool? ApplyModTrackAdjustments => false;
 
         private readonly IBindable<bool> gameActive = new Bindable<bool>(true);
 

osu.Game/Screens/Play/PlayerLoader.cs

@@ -46,6 +46,8 @@ namespace osu.Game.Screens.Play
 
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
+        public override bool? AllowGlobalTrackControl => false;
+
         // Here because IsHovered will not update unless we do so.
         public override bool HandlePositionalInput => true;
 

osu.Game/Screens/Ranking/ReplayDownloadButton.cs

@@ -83,6 +83,10 @@ namespace osu.Game.Screens.Ranking
 
             Score.BindValueChanged(score =>
             {
+                // An export may be pending from the last score.
+                // Reset this to meet user expectations (a new score which has just been switched to shouldn't export)
+                State.ValueChanged -= exportWhenReady;
+
                 downloadTracker?.RemoveAndDisposeImmediately();
 
                 if (score.NewValue != null)
@@ -117,11 +121,17 @@ namespace osu.Game.Screens.Ranking
                     return true;
 
                 case GlobalAction.ExportReplay:
-                    State.BindValueChanged(exportWhenReady, true);
-
-                    // start the import via button
-                    if (State.Value != DownloadState.LocallyAvailable)
+                    if (State.Value == DownloadState.LocallyAvailable)
+                    {
+                        State.BindValueChanged(exportWhenReady, true);
+                    }
+                    else
+                    {
+                        // A download needs to be performed before we can export this replay.
                         button.TriggerClick();
+                        if (button.Enabled.Value)
+                            State.BindValueChanged(exportWhenReady, true);
+                    }
 
                     return true;
             }

osu.Game/Screens/Ranking/ResultsScreen.cs

@@ -36,6 +36,8 @@ namespace osu.Game.Screens.Ranking
 
         public override bool DisallowExternalBeatmapRulesetChanges => true;
 
+        public override bool? AllowGlobalTrackControl => true;
+
         // Temporary for now to stop dual transitions. Should respect the current toolbar mode, but there's no way to do so currently.
         public override bool HideOverlaysOnEnter => true;
 

osu.Game/Screens/Select/PlaySongSelect.cs

@@ -146,12 +146,24 @@ namespace osu.Game.Screens.Select
         public override void OnResuming(ScreenTransitionEvent e)
         {
             base.OnResuming(e);
+            revertMods();
+        }
 
-            if (playerLoader != null)
-            {
-                Mods.Value = modsAtGameplayStart;
-                playerLoader = null;
-            }
+        public override bool OnExiting(ScreenExitEvent e)
+        {
+            if (base.OnExiting(e))
+                return true;
+
+            revertMods();
+            return false;
+        }
+
+        private void revertMods()
+        {
+            if (playerLoader == null) return;
+
+            Mods.Value = modsAtGameplayStart;
+            playerLoader = null;
         }
     }
 }

osu.Game/Screens/Select/SongSelect.cs

@@ -60,7 +60,7 @@ namespace osu.Game.Screens.Select
 
         protected virtual bool ShowFooter => true;
 
-        public override bool? AllowTrackAdjustments => true;
+        public override bool? ApplyModTrackAdjustments => true;
 
         /// <summary>
         /// Can be null if <see cref="ShowFooter"/> is false.

osu.Game/Utils/GeometryUtils.cs

@@ -0,0 +1,126 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Objects.Types;
+using osuTK;
+
+namespace osu.Game.Utils
+{
+    public static class GeometryUtils
+    {
+        /// <summary>
+        /// Rotate a point around an arbitrary origin.
+        /// </summary>
+        /// <param name="point">The point.</param>
+        /// <param name="origin">The centre origin to rotate around.</param>
+        /// <param name="angle">The angle to rotate (in degrees).</param>
+        public static Vector2 RotatePointAroundOrigin(Vector2 point, Vector2 origin, float angle)
+        {
+            angle = -angle;
+
+            point.X -= origin.X;
+            point.Y -= origin.Y;
+
+            Vector2 ret;
+            ret.X = point.X * MathF.Cos(MathUtils.DegreesToRadians(angle)) + point.Y * MathF.Sin(MathUtils.DegreesToRadians(angle));
+            ret.Y = point.X * -MathF.Sin(MathUtils.DegreesToRadians(angle)) + point.Y * MathF.Cos(MathUtils.DegreesToRadians(angle));
+
+            ret.X += origin.X;
+            ret.Y += origin.Y;
+
+            return ret;
+        }
+
+        /// <summary>
+        /// Given a flip direction, a surrounding quad for all selected objects, and a position,
+        /// will return the flipped position in screen space coordinates.
+        /// </summary>
+        public static Vector2 GetFlippedPosition(Direction direction, Quad quad, Vector2 position)
+        {
+            var centre = quad.Centre;
+
+            switch (direction)
+            {
+                case Direction.Horizontal:
+                    position.X = centre.X - (position.X - centre.X);
+                    break;
+
+                case Direction.Vertical:
+                    position.Y = centre.Y - (position.Y - centre.Y);
+                    break;
+            }
+
+            return position;
+        }
+
+        /// <summary>
+        /// Given a scale vector, a surrounding quad for all selected objects, and a position,
+        /// will return the scaled position in screen space coordinates.
+        /// </summary>
+        public static Vector2 GetScaledPosition(Anchor reference, Vector2 scale, Quad selectionQuad, Vector2 position)
+        {
+            // adjust the direction of scale depending on which side the user is dragging.
+            float xOffset = ((reference & Anchor.x0) > 0) ? -scale.X : 0;
+            float yOffset = ((reference & Anchor.y0) > 0) ? -scale.Y : 0;
+
+            // guard against no-ops and NaN.
+            if (scale.X != 0 && selectionQuad.Width > 0)
+                position.X = selectionQuad.TopLeft.X + xOffset + (position.X - selectionQuad.TopLeft.X) / selectionQuad.Width * (selectionQuad.Width + scale.X);
+
+            if (scale.Y != 0 && selectionQuad.Height > 0)
+                position.Y = selectionQuad.TopLeft.Y + yOffset + (position.Y - selectionQuad.TopLeft.Y) / selectionQuad.Height * (selectionQuad.Height + scale.Y);
+
+            return position;
+        }
+
+        /// <summary>
+        /// Returns a quad surrounding the provided points.
+        /// </summary>
+        /// <param name="points">The points to calculate a quad for.</param>
+        public static Quad GetSurroundingQuad(IEnumerable<Vector2> points)
+        {
+            if (!points.Any())
+                return new Quad();
+
+            Vector2 minPosition = new Vector2(float.MaxValue, float.MaxValue);
+            Vector2 maxPosition = new Vector2(float.MinValue, float.MinValue);
+
+            // Go through all hitobjects to make sure they would remain in the bounds of the editor after movement, before any movement is attempted
+            foreach (var p in points)
+            {
+                minPosition = Vector2.ComponentMin(minPosition, p);
+                maxPosition = Vector2.ComponentMax(maxPosition, p);
+            }
+
+            Vector2 size = maxPosition - minPosition;
+
+            return new Quad(minPosition.X, minPosition.Y, size.X, size.Y);
+        }
+
+        /// <summary>
+        /// Returns a gamefield-space quad surrounding the provided hit objects.
+        /// </summary>
+        /// <param name="hitObjects">The hit objects to calculate a quad for.</param>
+        public static Quad GetSurroundingQuad(IEnumerable<IHasPosition> hitObjects) =>
+            GetSurroundingQuad(hitObjects.SelectMany(h =>
+            {
+                if (h is IHasPath path)
+                {
+                    return new[]
+                    {
+                        h.Position,
+                        // can't use EndPosition for reverse slider cases.
+                        h.Position + path.Path.PositionAt(1)
+                    };
+                }
+
+                return new[] { h.Position };
+            }));
+    }
+}

osu.Game/osu.Game.csproj

@@ -36,7 +36,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Realm" Version="11.1.2" />
-    <PackageReference Include="ppy.osu.Framework" Version="2023.724.0" />
+    <PackageReference Include="ppy.osu.Framework" Version="2023.801.0" />
     <PackageReference Include="ppy.osu.Game.Resources" Version="2023.719.0" />
     <PackageReference Include="Sentry" Version="3.28.1" />
     <PackageReference Include="SharpCompress" Version="0.32.2" />

osu.iOS.props

@@ -23,6 +23,6 @@
     <RuntimeIdentifier>iossimulator-x64</RuntimeIdentifier>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.iOS" Version="2023.724.0" />
+    <PackageReference Include="ppy.osu.Framework.iOS" Version="2023.801.0" />
   </ItemGroup>
 </Project>