Merge branch 'master' into ui-scaling-keybind

.github/FUNDING.yml

@@ -1 +1,2 @@
+github: ppy
 custom: https://osu.ppy.sh/home/support

.github/workflows/ci.yml

@@ -50,6 +50,48 @@ jobs:
           name: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}
           path: ${{github.workspace}}/TestResults/TestResults-${{matrix.os.prettyname}}-${{matrix.threadingMode}}.trx
 
+  build-only-android:
+    name: Build only (Android)
+    runs-on: windows-latest
+    timeout-minutes: 60
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install .NET 5.0.x
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "5.0.x"
+
+      - name: Setup MSBuild
+        uses: microsoft/setup-msbuild@v1
+
+      - name: Build
+        run: msbuild osu.Android.slnf /restore /p:Configuration=Debug
+
+  build-only-ios:
+    # While this workflow technically *can* run, it fails as iOS builds are blocked by multiple issues.
+    # See https://github.com/ppy/osu-framework/issues/4677 for the details.
+    # The job can be unblocked once those issues are resolved and game deployments can happen again.
+    if: false
+    name: Build only (iOS)
+    runs-on: macos-latest
+    timeout-minutes: 60
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install .NET 5.0.x
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "5.0.x"
+
+      # Contrary to seemingly any other msbuild, msbuild running on macOS/Mono
+      # cannot accept .sln(f) files as arguments.
+      # Build just the main game for now.
+      - name: Build
+        run: msbuild osu.iOS/osu.iOS.csproj /restore /p:Configuration=Debug
+
   inspect-code:
     name: Code Quality
     runs-on: ubuntu-latest
@@ -79,9 +121,14 @@ jobs:
         run: |
           # TODO: Add ignore filters and GitHub Workflow Command Reporting in CFS. That way we don't have to do this workaround.
           # FIXME: Suppress warnings from templates project
-          dotnet codefilesanity | while read -r line; do
+          exit_code=0
-            echo "::warning::$line"
+          while read -r line; do
-          done
+            if [[ ! -z "$line" ]]; then
+              echo "::error::$line"
+              exit_code=1
+            fi
+          done <<< $(dotnet codefilesanity)
+          exit $exit_code
 
       # Temporarily disabled due to test failures, but it won't work anyway until the tool is upgraded.
       # - name: .NET Format (Dry Run)

.github/workflows/report-nunit.yml

@@ -30,3 +30,5 @@ jobs:
           name: Test Results (${{matrix.os.prettyname}}, ${{matrix.threadingMode}})
           path: "*.trx"
           reporter: dotnet-trx
+          list-suites: 'failed'
+          list-tests: 'failed'

osu.Android.props

@@ -51,8 +51,8 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2021.1004.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2021.1026.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.1004.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.1026.0" />
   </ItemGroup>
   <ItemGroup Label="Transitive Dependencies">
     <!-- Realm needs to be directly referenced in all Xamarin projects, as it will not pull in its transitive dependencies otherwise. -->

osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchDistanceSnapGrid.cs

@@ -0,0 +1,91 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Input.Events;
+using osu.Framework.Timing;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Edit;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class TestSceneCatchDistanceSnapGrid : OsuManualInputManagerTestScene
+    {
+        private readonly ManualClock manualClock = new ManualClock();
+
+        [Cached(typeof(Playfield))]
+        private readonly CatchPlayfield playfield;
+
+        private ScrollingHitObjectContainer hitObjectContainer => playfield.HitObjectContainer;
+
+        private readonly CatchDistanceSnapGrid distanceGrid;
+
+        private readonly FruitOutline fruitOutline;
+
+        private readonly Fruit fruit = new Fruit();
+
+        public TestSceneCatchDistanceSnapGrid()
+        {
+            Child = new Container
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Y,
+                Width = 500,
+
+                Children = new Drawable[]
+                {
+                    new ScrollingTestContainer(ScrollingDirection.Down)
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Child = playfield = new CatchPlayfield(new BeatmapDifficulty())
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Clock = new FramedClock(manualClock)
+                        }
+                    },
+                    distanceGrid = new CatchDistanceSnapGrid(new double[] { 0, -1, 1 }),
+                    fruitOutline = new FruitOutline()
+                },
+            };
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            distanceGrid.StartTime = 100;
+            distanceGrid.StartX = 250;
+
+            Vector2 screenSpacePosition = InputManager.CurrentState.Mouse.Position;
+
+            var result = distanceGrid.GetSnappedPosition(screenSpacePosition);
+
+            if (result != null)
+            {
+                fruit.OriginalX = hitObjectContainer.ToLocalSpace(result.ScreenSpacePosition).X;
+
+                if (result.Time != null)
+                    fruit.StartTime = result.Time.Value;
+            }
+
+            fruitOutline.Position = CatchHitObjectUtils.GetStartPosition(hitObjectContainer, fruit);
+            fruitOutline.UpdateFrom(fruit);
+        }
+
+        protected override bool OnScroll(ScrollEvent e)
+        {
+            manualClock.CurrentTime -= e.ScrollDelta.Y * 50;
+            return true;
+        }
+    }
+}

osu.Game.Rulesets.Catch/Edit/CatchDistanceSnapGrid.cs

@@ -0,0 +1,141 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Lines;
+using osu.Framework.Graphics.Primitives;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    /// <summary>
+    /// The guide lines used in the osu!catch editor to compose patterns that can be caught with constant speed.
+    /// Currently, only forward placement (an object is snapped based on the previous object, not the opposite) is supported.
+    /// </summary>
+    public class CatchDistanceSnapGrid : CompositeDrawable
+    {
+        public double StartTime { get; set; }
+
+        public float StartX { get; set; }
+
+        private const double max_vertical_line_length_in_time = CatchPlayfield.WIDTH / Catcher.BASE_SPEED * 2;
+
+        private readonly double[] velocities;
+
+        private readonly List<Path> verticalPaths = new List<Path>();
+
+        private readonly List<Vector2[]> verticalLineVertices = new List<Vector2[]>();
+
+        [Resolved]
+        private Playfield playfield { get; set; }
+
+        private ScrollingHitObjectContainer hitObjectContainer => (ScrollingHitObjectContainer)playfield.HitObjectContainer;
+
+        public CatchDistanceSnapGrid(double[] velocities)
+        {
+            RelativeSizeAxes = Axes.Both;
+            Anchor = Anchor.BottomLeft;
+
+            this.velocities = velocities;
+
+            for (int i = 0; i < velocities.Length; i++)
+            {
+                verticalPaths.Add(new SmoothPath
+                {
+                    PathRadius = 2,
+                    Alpha = 0.5f,
+                });
+
+                verticalLineVertices.Add(new[] { Vector2.Zero, Vector2.Zero });
+            }
+
+            AddRangeInternal(verticalPaths);
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            double currentTime = hitObjectContainer.Time.Current;
+
+            for (int i = 0; i < velocities.Length; i++)
+            {
+                double velocity = velocities[i];
+
+                // The line ends at the top of the playfield.
+                double endTime = hitObjectContainer.TimeAtPosition(-hitObjectContainer.DrawHeight, currentTime);
+
+                // Non-vertical lines are cut at the sides of the playfield.
+                // Vertical lines are cut at some reasonable length.
+                if (velocity > 0)
+                    endTime = Math.Min(endTime, StartTime + (CatchPlayfield.WIDTH - StartX) / velocity);
+                else if (velocity < 0)
+                    endTime = Math.Min(endTime, StartTime + StartX / -velocity);
+                else
+                    endTime = Math.Min(endTime, StartTime + max_vertical_line_length_in_time);
+
+                Vector2[] lineVertices = verticalLineVertices[i];
+                lineVertices[0] = calculatePosition(velocity, StartTime);
+                lineVertices[1] = calculatePosition(velocity, endTime);
+
+                var verticalPath = verticalPaths[i];
+                verticalPath.Vertices = verticalLineVertices[i];
+                verticalPath.OriginPosition = verticalPath.PositionInBoundingBox(Vector2.Zero);
+            }
+
+            Vector2 calculatePosition(double velocity, double time)
+            {
+                // Don't draw inverted lines.
+                time = Math.Max(time, StartTime);
+
+                float x = StartX + (float)((time - StartTime) * velocity);
+                float y = hitObjectContainer.PositionAtTime(time, currentTime);
+                return new Vector2(x, y);
+            }
+        }
+
+        [CanBeNull]
+        public SnapResult GetSnappedPosition(Vector2 screenSpacePosition)
+        {
+            double time = hitObjectContainer.TimeAtScreenSpacePosition(screenSpacePosition);
+
+            // If the cursor is below the distance snap grid, snap to the origin.
+            // Not returning `null` to retain the continuous snapping behavior when the cursor is slightly below the origin.
+            // This behavior is not currently visible in the editor because editor chooses the snap start time based on the mouse position.
+            if (time <= StartTime)
+            {
+                float y = hitObjectContainer.PositionAtTime(StartTime);
+                Vector2 originPosition = hitObjectContainer.ToScreenSpace(new Vector2(StartX, y));
+                return new SnapResult(originPosition, StartTime);
+            }
+
+            return enumerateSnappingCandidates(time)
+                   .OrderBy(pos => Vector2.DistanceSquared(screenSpacePosition, pos.ScreenSpacePosition))
+                   .FirstOrDefault();
+        }
+
+        private IEnumerable<SnapResult> enumerateSnappingCandidates(double time)
+        {
+            float y = hitObjectContainer.PositionAtTime(time);
+
+            foreach (double velocity in velocities)
+            {
+                float x = (float)(StartX + (time - StartTime) * velocity);
+                Vector2 screenSpacePosition = hitObjectContainer.ToScreenSpace(new Vector2(x, y + hitObjectContainer.DrawHeight));
+                yield return new SnapResult(screenSpacePosition, time);
+            }
+        }
+
+        protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
+    }
+}

osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs

@@ -2,14 +2,23 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Linq;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Input;
 using osu.Game.Beatmaps;
+using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose.Components;
 using osuTK;
 
@@ -17,6 +26,14 @@ namespace osu.Game.Rulesets.Catch.Edit
 {
     public class CatchHitObjectComposer : HitObjectComposer<CatchHitObject>
     {
+        private const float distance_snap_radius = 50;
+
+        private CatchDistanceSnapGrid distanceSnapGrid;
+
+        private readonly Bindable<TernaryState> distanceSnapToggle = new Bindable<TernaryState>();
+
+        private InputManager inputManager;
+
         public CatchHitObjectComposer(CatchRuleset ruleset)
             : base(ruleset)
         {
@@ -30,6 +47,27 @@ namespace osu.Game.Rulesets.Catch.Edit
                 RelativeSizeAxes = Axes.Both,
                 PlayfieldBorderStyle = { Value = PlayfieldBorderStyle.Corners }
             });
+
+            LayerBelowRuleset.Add(distanceSnapGrid = new CatchDistanceSnapGrid(new[]
+            {
+                0.0,
+                Catcher.BASE_SPEED, -Catcher.BASE_SPEED,
+                Catcher.BASE_SPEED / 2, -Catcher.BASE_SPEED / 2,
+            }));
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            inputManager = GetContainingInputManager();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            updateDistanceSnapGrid();
         }
 
         protected override DrawableRuleset<CatchHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null) =>
@@ -42,14 +80,95 @@ namespace osu.Game.Rulesets.Catch.Edit
             new BananaShowerCompositionTool()
         };
 
+        protected override IEnumerable<TernaryButton> CreateTernaryButtons() => base.CreateTernaryButtons().Concat(new[]
+        {
+            new TernaryButton(distanceSnapToggle, "Distance Snap", () => new SpriteIcon { Icon = FontAwesome.Solid.Ruler })
+        });
+
         public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
         {
             var result = base.SnapScreenSpacePositionToValidTime(screenSpacePosition);
-            // TODO: implement position snap
             result.ScreenSpacePosition.X = screenSpacePosition.X;
+
+            if (distanceSnapGrid.IsPresent && distanceSnapGrid.GetSnappedPosition(result.ScreenSpacePosition) is SnapResult snapResult &&
+                Vector2.Distance(snapResult.ScreenSpacePosition, result.ScreenSpacePosition) < distance_snap_radius)
+            {
+                result = snapResult;
+            }
+
             return result;
         }
 
         protected override ComposeBlueprintContainer CreateBlueprintContainer() => new CatchBlueprintContainer(this);
+
+        [CanBeNull]
+        private PalpableCatchHitObject getLastSnappableHitObject(double time)
+        {
+            var hitObject = EditorBeatmap.HitObjects.OfType<CatchHitObject>().LastOrDefault(h => h.GetEndTime() < time && !(h is BananaShower));
+
+            switch (hitObject)
+            {
+                case Fruit fruit:
+                    return fruit;
+
+                case JuiceStream juiceStream:
+                    return juiceStream.NestedHitObjects.OfType<PalpableCatchHitObject>().LastOrDefault(h => !(h is TinyDroplet));
+
+                default:
+                    return null;
+            }
+        }
+
+        [CanBeNull]
+        private PalpableCatchHitObject getDistanceSnapGridSourceHitObject()
+        {
+            switch (BlueprintContainer.CurrentTool)
+            {
+                case SelectTool _:
+                    if (EditorBeatmap.SelectedHitObjects.Count == 0)
+                        return null;
+
+                    double minTime = EditorBeatmap.SelectedHitObjects.Min(hitObject => hitObject.StartTime);
+                    return getLastSnappableHitObject(minTime);
+
+                case FruitCompositionTool _:
+                case JuiceStreamCompositionTool _:
+                    if (!CursorInPlacementArea)
+                        return null;
+
+                    if (EditorBeatmap.PlacementObject.Value is JuiceStream)
+                    {
+                        // Juice stream path is not subject to snapping.
+                        return null;
+                    }
+
+                    double timeAtCursor = ((CatchPlayfield)Playfield).TimeAtScreenSpacePosition(inputManager.CurrentState.Mouse.Position);
+                    return getLastSnappableHitObject(timeAtCursor);
+
+                default:
+                    return null;
+            }
+        }
+
+        private void updateDistanceSnapGrid()
+        {
+            if (distanceSnapToggle.Value != TernaryState.True)
+            {
+                distanceSnapGrid.Hide();
+                return;
+            }
+
+            var sourceHitObject = getDistanceSnapGridSourceHitObject();
+
+            if (sourceHitObject == null)
+            {
+                distanceSnapGrid.Hide();
+                return;
+            }
+
+            distanceSnapGrid.Show();
+            distanceSnapGrid.StartTime = sourceHitObject.GetEndTime();
+            distanceSnapGrid.StartX = sourceHitObject.EffectiveX;
+        }
     }
 }

osu.Game.Rulesets.Catch/Objects/JuiceStream.cs

@@ -42,9 +42,8 @@ namespace osu.Game.Rulesets.Catch.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
-            DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
 
-            double scoringDistance = base_scoring_distance * difficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier;
+            double scoringDistance = base_scoring_distance * difficulty.SliderMultiplier * DifficultyControlPoint.SliderVelocity;
 
             Velocity = scoringDistance / timingPoint.BeatLength;
             TickDistance = scoringDistance / difficulty.SliderTickRate;

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

@@ -13,6 +13,7 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Edit;
 using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
@@ -101,27 +102,27 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor
             throw new System.NotImplementedException();
         }
 
-        public override float GetBeatSnapDistanceAt(double referenceTime)
+        public override float GetBeatSnapDistanceAt(HitObject referenceObject)
         {
             throw new System.NotImplementedException();
         }
 
-        public override float DurationToDistance(double referenceTime, double duration)
+        public override float DurationToDistance(HitObject referenceObject, double duration)
         {
             throw new System.NotImplementedException();
         }
 
-        public override double DistanceToDuration(double referenceTime, float distance)
+        public override double DistanceToDuration(HitObject referenceObject, float distance)
         {
             throw new System.NotImplementedException();
         }
 
-        public override double GetSnappedDurationFromDistance(double referenceTime, float distance)
+        public override double GetSnappedDurationFromDistance(HitObject referenceObject, float distance)
         {
             throw new System.NotImplementedException();
         }
 
-        public override float GetSnappedDistanceFromDistance(double referenceTime, float distance)
+        public override float GetSnappedDistanceFromDistance(HitObject referenceObject, float distance)
         {
             throw new System.NotImplementedException();
         }

osu.Game.Rulesets.Mania.Tests/TestSceneHoldNoteInput.cs

@@ -388,7 +388,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     },
                 };
 
-                beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
+                beatmap.ControlPointInfo.Add(0, new EffectControlPoint { ScrollSpeed = 0.1f });
             }
 
             AddStep("load player", () =>

osu.Game.Rulesets.Mania.Tests/TestSceneOutOfOrderHits.cs

@@ -148,7 +148,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     },
                 });
 
-                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
+                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new EffectControlPoint { ScrollSpeed = 0.1f });
 
                 var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
 

osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs

@@ -47,7 +47,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             Debug.Assert(distanceData != null);
 
             TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
-            DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
+            DifficultyControlPoint difficultyPoint = hitObject.DifficultyControlPoint;
 
             double beatLength;
 #pragma warning disable 618
@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 #pragma warning restore 618
                 beatLength = timingPoint.BeatLength * legacyDifficultyPoint.BpmMultiplier;
             else
-                beatLength = timingPoint.BeatLength / difficultyPoint.SpeedMultiplier;
+                beatLength = timingPoint.BeatLength / difficultyPoint.SliderVelocity;
 
             SpanCount = repeatsData?.SpanCount() ?? 1;
             StartTime = (int)Math.Round(hitObject.StartTime);

osu.Game.Rulesets.Mania/Configuration/ManiaRulesetConfigManager.cs

@@ -28,7 +28,12 @@ namespace osu.Game.Rulesets.Mania.Configuration
         public override TrackedSettings CreateTrackedSettings() => new TrackedSettings
         {
             new TrackedSetting<double>(ManiaRulesetSetting.ScrollTime,
-                v => new SettingDescription(v, "Scroll Speed", $"{(int)Math.Round(DrawableManiaRuleset.MAX_TIME_RANGE / v)} ({v}ms)"))
+                scrollTime => new SettingDescription(
+                    rawValue: scrollTime,
+                    name: "Scroll Speed",
+                    value: $"{(int)Math.Round(DrawableManiaRuleset.MAX_TIME_RANGE / scrollTime)} ({scrollTime}ms)"
+                )
+            )
         };
     }
 

osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/mania-samples.osu

@@ -13,6 +13,7 @@ SliderTickRate:1
 
 [TimingPoints]
 0,500,4,1,0,100,1,0
+10000,-150,4,1,0,100,1,0
 
 [HitObjects]
 51,192,500,128,0,1500:1:0:0:0:

osu.Game.Rulesets.Mania/UI/DrawableManiaRuleset.cs

@@ -94,7 +94,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
                 // For non-mania beatmap, speed changes should only happen through timing points
                 if (!isForCurrentRuleset)
-                    p.DifficultyPoint = new DifficultyControlPoint();
+                    p.EffectPoint = new EffectControlPoint();
             }
 
             BarLines.ForEach(Playfield.Add);

osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuDistanceSnapGrid.cs

@@ -11,6 +11,7 @@ using osu.Framework.Input.Events;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Edit;
 using osu.Game.Rulesets.Osu.Objects;
@@ -179,15 +180,15 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) => new SnapResult(screenSpacePosition, 0);
 
-            public float GetBeatSnapDistanceAt(double referenceTime) => (float)beat_length;
+            public float GetBeatSnapDistanceAt(HitObject referenceObject) => (float)beat_length;
 
-            public float DurationToDistance(double referenceTime, double duration) => (float)duration;
+            public float DurationToDistance(HitObject referenceObject, double duration) => (float)duration;
 
-            public double DistanceToDuration(double referenceTime, float distance) => distance;
+            public double DistanceToDuration(HitObject referenceObject, float distance) => distance;
 
-            public double GetSnappedDurationFromDistance(double referenceTime, float distance) => 0;
+            public double GetSnappedDurationFromDistance(HitObject referenceObject, float distance) => 0;
 
-            public float GetSnappedDistanceFromDistance(double referenceTime, float distance) => 0;
+            public float GetSnappedDistanceFromDistance(HitObject referenceObject, float distance) => 0;
         }
     }
 }

osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.cs

@@ -45,8 +45,8 @@ namespace osu.Game.Rulesets.Osu.Tests.Mods
                     {
                         new Spinner
                         {
-                            Duration = 2000,
+                            Duration = 6000,
-                            Position = OsuPlayfield.BASE_SIZE / 2
+                            Position = OsuPlayfield.BASE_SIZE / 2,
                         }
                     }
                 },

osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs

@@ -117,6 +117,42 @@ namespace osu.Game.Rulesets.Osu.Tests.Mods
             PassCondition = checkSomeHit
         });
 
+        [Test]
+        public void TestApproachCirclesOnly() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden { OnlyFadeApproachCircles = { Value = true } },
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new HitCircle
+                    {
+                        StartTime = 1000,
+                        Position = new Vector2(206, 142)
+                    },
+                    new HitCircle
+                    {
+                        StartTime = 2000,
+                        Position = new Vector2(306, 142)
+                    },
+                    new Slider
+                    {
+                        StartTime = 3000,
+                        Position = new Vector2(156, 242),
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(200, 0), })
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        StartTime = 7000,
+                        EndTime = 9000
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
         private bool checkSomeHit() => Player.ScoreProcessor.JudgedHits >= 4;
 
         private bool objectWithIncreasedVisibilityHasIndex(int index)

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

@@ -60,7 +60,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             {
                 config.SetValue(OsuSetting.AutoCursorSize, true);
                 gameplayState.Beatmap.Difficulty.CircleSize = val;
-                Scheduler.AddOnce(() => loadContent(false));
+                Scheduler.AddOnce(loadContent);
             });
 
             AddStep("test cursor container", () => loadContent(false));
@@ -78,7 +78,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             AddStep($"adjust cs to {circleSize}", () => gameplayState.Beatmap.Difficulty.CircleSize = circleSize);
             AddStep("turn on autosizing", () => config.SetValue(OsuSetting.AutoCursorSize, true));
 
-            AddStep("load content", () => loadContent());
+            AddStep("load content", loadContent);
 
             AddUntilStep("cursor size correct", () => lastContainer.ActiveCursor.Scale.X == OsuCursorContainer.GetScaleForCircleSize(circleSize) * userScale);
 
@@ -98,7 +98,9 @@ namespace osu.Game.Rulesets.Osu.Tests
             AddStep("load content", () => loadContent(false, () => new SkinProvidingContainer(new TopLeftCursorSkin())));
         }
 
-        private void loadContent(bool automated = true, Func<SkinProvidingContainer> skinProvider = null)
+        private void loadContent() => loadContent(false);
+
+        private void loadContent(bool automated, Func<SkinProvidingContainer> skinProvider = null)
         {
             SetContents(_ =>
             {

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

@@ -407,8 +407,6 @@ namespace osu.Game.Rulesets.Osu.Tests
                     },
                 });
 
-                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
-
                 SelectedMods.Value = new[] { new OsuModClassic() };
 
                 var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
@@ -439,6 +437,8 @@ namespace osu.Game.Rulesets.Osu.Tests
         {
             public TestSlider()
             {
+                DifficultyControlPoint = new DifficultyControlPoint { SliderVelocity = 0.1f };
+
                 DefaultsApplied += _ =>
                 {
                     HeadCircle.HitWindows = new TestHitWindows();

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

@@ -13,6 +13,7 @@ using osuTK.Graphics;
 using osu.Game.Rulesets.Mods;
 using System.Linq;
 using NUnit.Framework;
+using osu.Game.Beatmaps.Legacy;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Judgements;
@@ -328,10 +329,14 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         private Drawable createDrawable(Slider slider, float circleSize, double speedMultiplier)
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
-            cpi.Add(0, new DifficultyControlPoint { SpeedMultiplier = speedMultiplier });
+            cpi.Add(0, new DifficultyControlPoint { SliderVelocity = speedMultiplier });
 
-            slider.ApplyDefaults(cpi, new BeatmapDifficulty { CircleSize = circleSize, SliderTickRate = 3 });
+            slider.ApplyDefaults(cpi, new BeatmapDifficulty
+            {
+                CircleSize = circleSize,
+                SliderTickRate = 3
+            });
 
             var drawable = CreateDrawableSlider(slider);
 

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

@@ -348,6 +348,7 @@ namespace osu.Game.Rulesets.Osu.Tests
                         {
                             StartTime = time_slider_start,
                             Position = new Vector2(0, 0),
+                            DifficultyControlPoint = new DifficultyControlPoint { SliderVelocity = 0.1f },
                             Path = new SliderPath(PathType.PerfectCurve, new[]
                             {
                                 Vector2.Zero,
@@ -362,8 +363,6 @@ namespace osu.Game.Rulesets.Osu.Tests
                     },
                 });
 
-                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
-
                 var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
 
                 p.OnLoadComplete += _ =>

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

@@ -30,6 +30,9 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneSpinnerRotation : TestSceneOsuPlayer
     {
+        private const double spinner_start_time = 100;
+        private const double spinner_duration = 6000;
+
         [Resolved]
         private AudioManager audioManager { get; set; }
 
@@ -77,7 +80,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             double finalTrackerRotation = 0, trackerRotationTolerance = 0;
             double finalSpinnerSymbolRotation = 0, spinnerSymbolRotationTolerance = 0;
 
-            addSeekStep(5000);
+            addSeekStep(spinner_start_time + 5000);
             AddStep("retrieve disc rotation", () =>
             {
                 finalTrackerRotation = drawableSpinner.RotationTracker.Rotation;
@@ -90,7 +93,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             });
             AddStep("retrieve cumulative disc rotation", () => finalCumulativeTrackerRotation = drawableSpinner.Result.RateAdjustedRotation);
 
-            addSeekStep(2500);
+            addSeekStep(spinner_start_time + 2500);
             AddAssert("disc rotation rewound",
                 // we want to make sure that the rotation at time 2500 is in the same direction as at time 5000, but about half-way in.
                 // due to the exponential damping applied we're allowing a larger margin of error of about 10%
@@ -102,7 +105,7 @@ namespace osu.Game.Rulesets.Osu.Tests
                 // cumulative rotation is not damped, so we're treating it as the "ground truth" and allowing a comparatively smaller margin of error.
                 () => Precision.AlmostEquals(drawableSpinner.Result.RateAdjustedRotation, finalCumulativeTrackerRotation / 2, 100));
 
-            addSeekStep(5000);
+            addSeekStep(spinner_start_time + 5000);
             AddAssert("is disc rotation almost same",
                 () => Precision.AlmostEquals(drawableSpinner.RotationTracker.Rotation, finalTrackerRotation, trackerRotationTolerance));
             AddAssert("is symbol rotation almost same",
@@ -140,7 +143,7 @@ namespace osu.Game.Rulesets.Osu.Tests
         [Test]
         public void TestSpinnerNormalBonusRewinding()
         {
-            addSeekStep(1000);
+            addSeekStep(spinner_start_time + 1000);
 
             AddAssert("player score matching expected bonus score", () =>
             {
@@ -201,24 +204,9 @@ namespace osu.Game.Rulesets.Osu.Tests
             AddAssert("spm almost same", () => Precision.AlmostEquals(expectedSpm, drawableSpinner.SpinsPerMinute.Value, 2.0));
         }
 
-        private Replay applyRateAdjustment(Replay scoreReplay, double rate) => new Replay
-        {
-            Frames = scoreReplay
-                     .Frames
-                     .Cast<OsuReplayFrame>()
-                     .Select(replayFrame =>
-                     {
-                         var adjustedTime = replayFrame.Time * rate;
-                         return new OsuReplayFrame(adjustedTime, replayFrame.Position, replayFrame.Actions.ToArray());
-                     })
-                     .Cast<ReplayFrame>()
-                     .ToList()
-        };
-
         private void addSeekStep(double time)
         {
             AddStep($"seek to {time}", () => Player.GameplayClockContainer.Seek(time));
-
             AddUntilStep("wait for seek to finish", () => Precision.AlmostEquals(time, Player.DrawableRuleset.FrameStableClock.CurrentTime, 100));
         }
 
@@ -241,7 +229,8 @@ namespace osu.Game.Rulesets.Osu.Tests
                 new Spinner
                 {
                     Position = new Vector2(256, 192),
-                    EndTime = 6000,
+                    StartTime = spinner_start_time,
+                    Duration = spinner_duration
                 },
             }
         };

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

@@ -369,8 +369,6 @@ namespace osu.Game.Rulesets.Osu.Tests
                     },
                 });
 
-                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
-
                 var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
 
                 p.OnLoadComplete += _ =>
@@ -399,6 +397,8 @@ namespace osu.Game.Rulesets.Osu.Tests
         {
             public TestSlider()
             {
+                DifficultyControlPoint = new DifficultyControlPoint { SliderVelocity = 0.1f };
+
                 DefaultsApplied += _ =>
                 {
                     HeadCircle.HitWindows = new TestHitWindows();

osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs

@@ -11,6 +11,7 @@ using System.Linq;
 using System.Threading;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Game.Beatmaps.Legacy;
 
 namespace osu.Game.Rulesets.Osu.Beatmaps
 {
@@ -44,7 +45,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                         LegacyLastTickOffset = (original as IHasLegacyLastTickOffset)?.LegacyLastTickOffset,
                         // prior to v8, speed multipliers don't adjust for how many ticks are generated over the same distance.
                         // this results in more (or less) ticks being generated in <v8 maps for the same time duration.
-                        TickDistanceMultiplier = beatmap.BeatmapInfo.BeatmapVersion < 8 ? 1f / beatmap.ControlPointInfo.DifficultyPointAt(original.StartTime).SpeedMultiplier : 1
+                        TickDistanceMultiplier = beatmap.BeatmapInfo.BeatmapVersion < 8 ? 1f / ((LegacyControlPointInfo)beatmap.ControlPointInfo).DifficultyPointAt(original.StartTime).SliderVelocity : 1
                     }.Yield();
 
                 case IHasDuration endTimeData:

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

@@ -14,6 +14,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
         public double OverallDifficulty { get; set; }
         public double DrainRate { get; set; }
         public int HitCircleCount { get; set; }
+        public int SliderCount { get; set; }
         public int SpinnerCount { get; set; }
     }
 }

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

@@ -64,6 +64,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             maxCombo += beatmap.HitObjects.OfType<Slider>().Sum(s => s.NestedHitObjects.Count - 1);
 
             int hitCirclesCount = beatmap.HitObjects.Count(h => h is HitCircle);
+            int sliderCount = beatmap.HitObjects.Count(h => h is Slider);
             int spinnerCount = beatmap.HitObjects.Count(h => h is Spinner);
 
             return new OsuDifficultyAttributes
@@ -78,6 +79,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                 DrainRate = drainRate,
                 MaxCombo = maxCombo,
                 HitCircleCount = hitCirclesCount,
+                SliderCount = sliderCount,
                 SpinnerCount = spinnerCount,
                 Skills = skills
             };

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

@@ -25,6 +25,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
         private int countMeh;
         private int countMiss;
 
+        private int effectiveMissCount;
+
         public OsuPerformanceCalculator(Ruleset ruleset, DifficultyAttributes attributes, ScoreInfo score)
             : base(ruleset, attributes, score)
         {
@@ -39,19 +41,20 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             countOk = Score.Statistics.GetValueOrDefault(HitResult.Ok);
             countMeh = Score.Statistics.GetValueOrDefault(HitResult.Meh);
             countMiss = Score.Statistics.GetValueOrDefault(HitResult.Miss);
+            effectiveMissCount = calculateEffectiveMissCount();
 
             double multiplier = 1.12; // This is being adjusted to keep the final pp value scaled around what it used to be when changing things.
 
             // Custom multipliers for NoFail and SpunOut.
             if (mods.Any(m => m is OsuModNoFail))
-                multiplier *= Math.Max(0.90, 1.0 - 0.02 * countMiss);
+                multiplier *= Math.Max(0.90, 1.0 - 0.02 * effectiveMissCount);
 
             if (mods.Any(m => m is OsuModSpunOut))
                 multiplier *= 1.0 - Math.Pow((double)Attributes.SpinnerCount / totalHits, 0.85);
 
             if (mods.Any(h => h is OsuModRelax))
             {
-                countMiss += countOk + countMeh;
+                effectiveMissCount += countOk + countMeh;
                 multiplier *= 0.6;
             }
 
@@ -97,8 +100,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             aimValue *= lengthBonus;
 
             // Penalize misses by assessing # of misses relative to the total # of objects. Default a 3% reduction for any # of misses.
-            if (countMiss > 0)
+            if (effectiveMissCount > 0)
-                aimValue *= 0.97 * Math.Pow(1 - Math.Pow((double)countMiss / totalHits, 0.775), countMiss);
+                aimValue *= 0.97 * Math.Pow(1 - Math.Pow((double)effectiveMissCount / totalHits, 0.775), effectiveMissCount);
 
             // Combo scaling.
             if (Attributes.MaxCombo > 0)
@@ -115,7 +118,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             double approachRateBonus = 1.0 + (0.03 + 0.37 * approachRateTotalHitsFactor) * approachRateFactor;
 
             if (mods.Any(m => m is OsuModBlinds))
-                aimValue *= 1.3 + (totalHits * (0.0016 / (1 + 2 * countMiss)) * Math.Pow(accuracy, 16)) * (1 - 0.003 * Attributes.DrainRate * Attributes.DrainRate);
+                aimValue *= 1.3 + (totalHits * (0.0016 / (1 + 2 * effectiveMissCount)) * Math.Pow(accuracy, 16)) * (1 - 0.003 * Attributes.DrainRate * Attributes.DrainRate);
             else if (mods.Any(h => h is OsuModHidden))
             {
                 // We want to give more reward for lower AR when it comes to aim and HD. This nerfs high AR and buffs lower AR.
@@ -142,8 +145,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             speedValue *= lengthBonus;
 
             // Penalize misses by assessing # of misses relative to the total # of objects. Default a 3% reduction for any # of misses.
-            if (countMiss > 0)
+            if (effectiveMissCount > 0)
-                speedValue *= 0.97 * Math.Pow(1 - Math.Pow((double)countMiss / totalHits, 0.775), Math.Pow(countMiss, .875));
+                speedValue *= 0.97 * Math.Pow(1 - Math.Pow((double)effectiveMissCount / totalHits, 0.775), Math.Pow(effectiveMissCount, .875));
 
             // Combo scaling.
             if (Attributes.MaxCombo > 0)
@@ -231,8 +234,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                 flashlightValue *= 1.3;
 
             // Penalize misses by assessing # of misses relative to the total # of objects. Default a 3% reduction for any # of misses.
-            if (countMiss > 0)
+            if (effectiveMissCount > 0)
-                flashlightValue *= 0.97 * Math.Pow(1 - Math.Pow((double)countMiss / totalHits, 0.775), Math.Pow(countMiss, .875));
+                flashlightValue *= 0.97 * Math.Pow(1 - Math.Pow((double)effectiveMissCount / totalHits, 0.775), Math.Pow(effectiveMissCount, .875));
 
             // Combo scaling.
             if (Attributes.MaxCombo > 0)
@@ -250,6 +253,24 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             return flashlightValue;
         }
 
+        private int calculateEffectiveMissCount()
+        {
+            // guess the number of misses + slider breaks from combo
+            double comboBasedMissCount = 0.0;
+
+            if (Attributes.SliderCount > 0)
+            {
+                double fullComboThreshold = Attributes.MaxCombo - 0.1 * Attributes.SliderCount;
+                if (scoreMaxCombo < fullComboThreshold)
+                    comboBasedMissCount = fullComboThreshold / Math.Max(1.0, scoreMaxCombo);
+            }
+
+            // we're clamping misscount because since its derived from combo it can be higher than total hits and that breaks some calculations
+            comboBasedMissCount = Math.Min(comboBasedMissCount, totalHits);
+
+            return Math.Max(countMiss, (int)Math.Floor(comboBasedMissCount));
+        }
+
         private int totalHits => countGreat + countOk + countMeh + countMiss;
         private int totalSuccessfulHits => countGreat + countOk + countMeh;
     }

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

@@ -54,6 +54,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
 
         private void setDistances()
         {
+            // We don't need to calculate either angle or distance when one of the last->curr objects is a spinner
+            if (BaseObject is Spinner || lastObject is Spinner)
+                return;
+
             // We will scale distances by this factor, so we can assume a uniform CircleSize among beatmaps.
             float scalingFactor = normalized_radius / (float)BaseObject.Radius;
 
@@ -71,11 +75,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
 
             Vector2 lastCursorPosition = getEndCursorPosition(lastObject);
 
-            // Don't need to jump to reach spinners
-            if (!(BaseObject is Spinner))
             JumpDistance = (BaseObject.StackedPosition * scalingFactor - lastCursorPosition * scalingFactor).Length;
 
-            if (lastLastObject != null)
+            if (lastLastObject != null && !(lastLastObject is Spinner))
             {
                 Vector2 lastLastCursorPosition = getEndCursorPosition(lastLastObject);
 

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs

@@ -8,12 +8,14 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Input;
 using osu.Framework.Input.Events;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
+using osu.Game.Screens.Edit;
 using osuTK;
 using osuTK.Input;
 
@@ -67,6 +69,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             inputManager = GetContainingInputManager();
         }
 
+        [Resolved]
+        private EditorBeatmap editorBeatmap { get; set; }
+
         public override void UpdateTimeAndPosition(SnapResult result)
         {
             base.UpdateTimeAndPosition(result);
@@ -75,6 +80,10 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             {
                 case SliderPlacementState.Initial:
                     BeginPlacement();
+
+                    var nearestDifficultyPoint = editorBeatmap.HitObjects.LastOrDefault(h => h.GetEndTime() < HitObject.StartTime)?.DifficultyControlPoint?.DeepClone() as DifficultyControlPoint;
+
+                    HitObject.DifficultyControlPoint = nearestDifficultyPoint ?? new DifficultyControlPoint();
                     HitObject.Position = ToLocalSpace(result.ScreenSpacePosition);
                     break;
 
@@ -212,7 +221,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 
         private void updateSlider()
         {
-            HitObject.Path.ExpectedDistance.Value = composer?.GetSnappedDistanceFromDistance(HitObject.StartTime, (float)HitObject.Path.CalculatedDistance) ?? (float)HitObject.Path.CalculatedDistance;
+            HitObject.Path.ExpectedDistance.Value = composer?.GetSnappedDistanceFromDistance(HitObject, (float)HitObject.Path.CalculatedDistance) ?? (float)HitObject.Path.CalculatedDistance;
 
             bodyPiece.UpdateFrom(HitObject);
             headCirclePiece.UpdateFrom(HitObject.HeadCircle);

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs

@@ -230,7 +230,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 
         private void updatePath()
         {
-            HitObject.Path.ExpectedDistance.Value = composer?.GetSnappedDistanceFromDistance(HitObject.StartTime, (float)HitObject.Path.CalculatedDistance) ?? (float)HitObject.Path.CalculatedDistance;
+            HitObject.Path.ExpectedDistance.Value = composer?.GetSnappedDistanceFromDistance(HitObject, (float)HitObject.Path.CalculatedDistance) ?? (float)HitObject.Path.CalculatedDistance;
             editorBeatmap?.Update(HitObject);
         }
 

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

@@ -11,7 +11,7 @@ namespace osu.Game.Rulesets.Osu.Edit
     public class OsuDistanceSnapGrid : CircularDistanceSnapGrid
     {
         public OsuDistanceSnapGrid(OsuHitObject hitObject, [CanBeNull] OsuHitObject nextHitObject = null)
-            : base(hitObject.StackedEndPosition, hitObject.GetEndTime(), nextHitObject?.StartTime)
+            : base(hitObject, hitObject.StackedEndPosition, hitObject.GetEndTime(), nextHitObject?.StartTime)
         {
             Masking = true;
         }

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

@@ -5,6 +5,8 @@ using System;
 using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Graphics;
+using osu.Framework.Bindables;
+using osu.Game.Configuration;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
@@ -17,6 +19,9 @@ namespace osu.Game.Rulesets.Osu.Mods
 {
     public class OsuModHidden : ModHidden, IHidesApproachCircles
     {
+        [SettingSource("Only fade approach circles", "The main object body will not fade when enabled.")]
+        public Bindable<bool> OnlyFadeApproachCircles { get; } = new BindableBool();
+
         public override string Description => @"Play with no approach circles and fading circles/sliders.";
         public override double ScoreMultiplier => 1.06;
 
@@ -44,15 +49,15 @@ namespace osu.Game.Rulesets.Osu.Mods
 
         protected override void ApplyIncreasedVisibilityState(DrawableHitObject hitObject, ArmedState state)
         {
-            applyState(hitObject, true);
+            applyHiddenState(hitObject, true);
         }
 
         protected override void ApplyNormalVisibilityState(DrawableHitObject hitObject, ArmedState state)
         {
-            applyState(hitObject, false);
+            applyHiddenState(hitObject, false);
         }
 
-        private void applyState(DrawableHitObject drawableObject, bool increaseVisibility)
+        private void applyHiddenState(DrawableHitObject drawableObject, bool increaseVisibility)
         {
             if (!(drawableObject is DrawableOsuHitObject drawableOsuObject))
                 return;
@@ -61,6 +66,24 @@ namespace osu.Game.Rulesets.Osu.Mods
 
             (double fadeStartTime, double fadeDuration) = getFadeOutParameters(drawableOsuObject);
 
+            // process approach circle hiding first (to allow for early return below).
+            if (!increaseVisibility)
+            {
+                if (drawableObject is DrawableHitCircle circle)
+                {
+                    using (circle.BeginAbsoluteSequence(hitObject.StartTime - hitObject.TimePreempt))
+                        circle.ApproachCircle.Hide();
+                }
+                else if (drawableObject is DrawableSpinner spinner)
+                {
+                    spinner.Body.OnSkinChanged += () => hideSpinnerApproachCircle(spinner);
+                    hideSpinnerApproachCircle(spinner);
+                }
+            }
+
+            if (OnlyFadeApproachCircles.Value)
+                return;
+
             switch (drawableObject)
             {
                 case DrawableSliderTail _:
@@ -84,12 +107,6 @@ namespace osu.Game.Rulesets.Osu.Mods
                         // only fade the circle piece (not the approach circle) for the increased visibility object.
                         fadeTarget = circle.CirclePiece;
                     }
-                    else
-                    {
-                        // we don't want to see the approach circle
-                        using (circle.BeginAbsoluteSequence(hitObject.StartTime - hitObject.TimePreempt))
-                            circle.ApproachCircle.Hide();
-                    }
 
                     using (drawableObject.BeginAbsoluteSequence(fadeStartTime))
                         fadeTarget.FadeOut(fadeDuration);
@@ -111,9 +128,6 @@ namespace osu.Game.Rulesets.Osu.Mods
                     // hide elements we don't care about.
                     // todo: hide background
 
-                    spinner.Body.OnSkinChanged += () => hideSpinnerApproachCircle(spinner);
-                    hideSpinnerApproachCircle(spinner);
-
                     using (spinner.BeginAbsoluteSequence(fadeStartTime))
                         spinner.FadeOut(fadeDuration);
 

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

@@ -0,0 +1,76 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.Mods;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Bindables;
+using osu.Framework.Localisation;
+using osu.Framework.Utils;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Configuration;
+using osu.Game.Overlays.Settings;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+
+namespace osu.Game.Rulesets.Osu.Mods
+{
+    public class OsuModNoScope : Mod, IUpdatableByPlayfield, IApplicableToScoreProcessor
+    {
+        /// <summary>
+        /// Slightly higher than the cutoff for <see cref="Drawable.IsPresent"/>.
+        /// </summary>
+        private const float min_alpha = 0.0002f;
+
+        private const float transition_duration = 100;
+
+        public override string Name => "No Scope";
+        public override string Acronym => "NS";
+        public override ModType Type => ModType.Fun;
+        public override IconUsage? Icon => FontAwesome.Solid.EyeSlash;
+        public override string Description => "Where's the cursor?";
+        public override double ScoreMultiplier => 1;
+
+        private BindableNumber<int> currentCombo;
+
+        private float targetAlpha;
+
+        [SettingSource(
+            "Hidden at combo",
+            "The combo count at which the cursor becomes completely hidden",
+            SettingControlType = typeof(SettingsSlider<int, HiddenComboSlider>)
+        )]
+        public BindableInt HiddenComboCount { get; } = new BindableInt
+        {
+            Default = 10,
+            Value = 10,
+            MinValue = 0,
+            MaxValue = 50,
+        };
+
+        public ScoreRank AdjustRank(ScoreRank rank, double accuracy) => rank;
+
+        public void ApplyToScoreProcessor(ScoreProcessor scoreProcessor)
+        {
+            if (HiddenComboCount.Value == 0) return;
+
+            currentCombo = scoreProcessor.Combo.GetBoundCopy();
+            currentCombo.BindValueChanged(combo =>
+            {
+                targetAlpha = Math.Max(min_alpha, 1 - (float)combo.NewValue / HiddenComboCount.Value);
+            }, true);
+        }
+
+        public virtual void Update(Playfield playfield)
+        {
+            playfield.Cursor.Alpha = (float)Interpolation.Lerp(playfield.Cursor.Alpha, targetAlpha, Math.Clamp(playfield.Time.Elapsed / transition_duration, 0, 1));
+        }
+    }
+
+    public class HiddenComboSlider : OsuSliderBar<int>
+    {
+        public override LocalisableString TooltipText => Current.Value == 0 ? "always hidden" : base.TooltipText;
+    }
+}

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

@@ -140,9 +140,8 @@ namespace osu.Game.Rulesets.Osu.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
-            DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
 
-            double scoringDistance = BASE_SCORING_DISTANCE * difficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier;
+            double scoringDistance = BASE_SCORING_DISTANCE * difficulty.SliderMultiplier * DifficultyControlPoint.SliderVelocity;
 
             Velocity = scoringDistance / timingPoint.BeatLength;
             TickDistance = scoringDistance / difficulty.SliderTickRate * TickDistanceMultiplier;
@@ -152,8 +151,9 @@ namespace osu.Game.Rulesets.Osu.Objects
         {
             base.CreateNestedHitObjects(cancellationToken);
 
-            foreach (var e in
+            var sliderEvents = SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken);
-                SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken))
+
+            foreach (var e in sliderEvents)
             {
                 switch (e.Type)
                 {
@@ -175,7 +175,6 @@ namespace osu.Game.Rulesets.Osu.Objects
                             StartTime = e.Time,
                             Position = Position,
                             StackHeight = StackHeight,
-                            SampleControlPoint = SampleControlPoint,
                         });
                         break;
 

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -192,6 +192,7 @@ namespace osu.Game.Rulesets.Osu
                         new OsuModBarrelRoll(),
                         new OsuModApproachDifferent(),
                         new OsuModMuted(),
+                        new OsuModNoScope(),
                     };
 
                 case ModType.System:

osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs

@@ -154,7 +154,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
             double distance = distanceData.Distance * spans * LegacyBeatmapEncoder.LEGACY_TAIKO_VELOCITY_MULTIPLIER;
 
             TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(obj.StartTime);
-            DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(obj.StartTime);
+            DifficultyControlPoint difficultyPoint = obj.DifficultyControlPoint;
 
             double beatLength;
 #pragma warning disable 618
@@ -162,7 +162,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
 #pragma warning restore 618
                 beatLength = timingPoint.BeatLength * legacyDifficultyPoint.BpmMultiplier;
             else
-                beatLength = timingPoint.BeatLength / difficultyPoint.SpeedMultiplier;
+                beatLength = timingPoint.BeatLength / difficultyPoint.SliderVelocity;
 
             double sliderScoringPointDistance = osu_base_scoring_distance * beatmap.Difficulty.SliderMultiplier / beatmap.Difficulty.SliderTickRate;
 

osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs

@@ -63,9 +63,8 @@ namespace osu.Game.Rulesets.Taiko.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
-            DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
 
-            double scoringDistance = base_distance * difficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier;
+            double scoringDistance = base_distance * difficulty.SliderMultiplier * DifficultyControlPoint.SliderVelocity;
             Velocity = scoringDistance / timingPoint.BeatLength;
 
             tickSpacing = timingPoint.BeatLength / TickRate;

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

@@ -192,15 +192,15 @@ namespace osu.Game.Tests.Beatmaps.Formats
 
                 var difficultyPoint = controlPoints.DifficultyPointAt(0);
                 Assert.AreEqual(0, difficultyPoint.Time);
-                Assert.AreEqual(1.0, difficultyPoint.SpeedMultiplier);
+                Assert.AreEqual(1.0, difficultyPoint.SliderVelocity);
 
                 difficultyPoint = controlPoints.DifficultyPointAt(48428);
                 Assert.AreEqual(0, difficultyPoint.Time);
-                Assert.AreEqual(1.0, difficultyPoint.SpeedMultiplier);
+                Assert.AreEqual(1.0, difficultyPoint.SliderVelocity);
 
                 difficultyPoint = controlPoints.DifficultyPointAt(116999);
                 Assert.AreEqual(116999, difficultyPoint.Time);
-                Assert.AreEqual(0.75, difficultyPoint.SpeedMultiplier, 0.1);
+                Assert.AreEqual(0.75, difficultyPoint.SliderVelocity, 0.1);
 
                 var soundPoint = controlPoints.SamplePointAt(0);
                 Assert.AreEqual(956, soundPoint.Time);
@@ -227,7 +227,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.IsTrue(effectPoint.KiaiMode);
                 Assert.IsFalse(effectPoint.OmitFirstBarLine);
 
-                effectPoint = controlPoints.EffectPointAt(119637);
+                effectPoint = controlPoints.EffectPointAt(116637);
                 Assert.AreEqual(95901, effectPoint.Time);
                 Assert.IsFalse(effectPoint.KiaiMode);
                 Assert.IsFalse(effectPoint.OmitFirstBarLine);
@@ -249,10 +249,10 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.That(controlPoints.EffectPoints.Count, Is.EqualTo(3));
                 Assert.That(controlPoints.SamplePoints.Count, Is.EqualTo(3));
 
-                Assert.That(controlPoints.DifficultyPointAt(500).SpeedMultiplier, Is.EqualTo(1.5).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(500).SliderVelocity, Is.EqualTo(1.5).Within(0.1));
-                Assert.That(controlPoints.DifficultyPointAt(1500).SpeedMultiplier, Is.EqualTo(1.5).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(1500).SliderVelocity, Is.EqualTo(1.5).Within(0.1));
-                Assert.That(controlPoints.DifficultyPointAt(2500).SpeedMultiplier, Is.EqualTo(0.75).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(2500).SliderVelocity, Is.EqualTo(0.75).Within(0.1));
-                Assert.That(controlPoints.DifficultyPointAt(3500).SpeedMultiplier, Is.EqualTo(1.5).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(3500).SliderVelocity, Is.EqualTo(1.5).Within(0.1));
 
                 Assert.That(controlPoints.EffectPointAt(500).KiaiMode, Is.True);
                 Assert.That(controlPoints.EffectPointAt(1500).KiaiMode, Is.True);
@@ -279,10 +279,10 @@ namespace osu.Game.Tests.Beatmaps.Formats
             using (var resStream = TestResources.OpenResource("timingpoint-speedmultiplier-reset.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                var controlPoints = decoder.Decode(stream).ControlPointInfo;
+                var controlPoints = (LegacyControlPointInfo)decoder.Decode(stream).ControlPointInfo;
 
-                Assert.That(controlPoints.DifficultyPointAt(0).SpeedMultiplier, Is.EqualTo(0.5).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(0).SliderVelocity, Is.EqualTo(0.5).Within(0.1));
-                Assert.That(controlPoints.DifficultyPointAt(2000).SpeedMultiplier, Is.EqualTo(1).Within(0.1));
+                Assert.That(controlPoints.DifficultyPointAt(2000).SliderVelocity, Is.EqualTo(1).Within(0.1));
             }
         }
 
@@ -394,12 +394,12 @@ namespace osu.Game.Tests.Beatmaps.Formats
             using (var resStream = TestResources.OpenResource("controlpoint-difficulty-multiplier.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                var controlPointInfo = decoder.Decode(stream).ControlPointInfo;
+                var controlPointInfo = (LegacyControlPointInfo)decoder.Decode(stream).ControlPointInfo;
 
-                Assert.That(controlPointInfo.DifficultyPointAt(5).SpeedMultiplier, Is.EqualTo(1));
+                Assert.That(controlPointInfo.DifficultyPointAt(5).SliderVelocity, Is.EqualTo(1));
-                Assert.That(controlPointInfo.DifficultyPointAt(1000).SpeedMultiplier, Is.EqualTo(10));
+                Assert.That(controlPointInfo.DifficultyPointAt(1000).SliderVelocity, Is.EqualTo(10));
-                Assert.That(controlPointInfo.DifficultyPointAt(2000).SpeedMultiplier, Is.EqualTo(1.8518518518518519d));
+                Assert.That(controlPointInfo.DifficultyPointAt(2000).SliderVelocity, Is.EqualTo(1.8518518518518519d));
-                Assert.That(controlPointInfo.DifficultyPointAt(3000).SpeedMultiplier, Is.EqualTo(0.5));
+                Assert.That(controlPointInfo.DifficultyPointAt(3000).SliderVelocity, Is.EqualTo(0.5));
             }
         }
 
@@ -775,5 +775,22 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.That(seventh.ControlPoints[4].Type == null);
             }
         }
+
+        [Test]
+        public void TestSliderLengthExtensionEdgeCase()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("duplicate-last-position-slider.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var decoded = decoder.Decode(stream);
+
+                var path = ((IHasPath)decoded.HitObjects[0]).Path;
+
+                Assert.That(path.ExpectedDistance.Value, Is.EqualTo(2));
+                Assert.That(path.Distance, Is.EqualTo(1));
+            }
+        }
     }
 }

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

@@ -46,8 +46,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
             sort(decoded.beatmap);
             sort(decodedAfterEncode.beatmap);
 
-            Assert.That(decodedAfterEncode.beatmap.Serialize(), Is.EqualTo(decoded.beatmap.Serialize()));
+            compareBeatmaps(decoded, decodedAfterEncode);
-            Assert.IsTrue(areComboColoursEqual(decodedAfterEncode.beatmapSkin.Configuration, decoded.beatmapSkin.Configuration));
         }
 
         [TestCaseSource(nameof(allBeatmaps))]
@@ -62,8 +61,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
             sort(decoded.beatmap);
             sort(decodedAfterEncode.beatmap);
 
-            Assert.That(decodedAfterEncode.beatmap.Serialize(), Is.EqualTo(decoded.beatmap.Serialize()));
+            compareBeatmaps(decoded, decodedAfterEncode);
-            Assert.IsTrue(areComboColoursEqual(decodedAfterEncode.beatmapSkin.Configuration, decoded.beatmapSkin.Configuration));
         }
 
         [TestCaseSource(nameof(allBeatmaps))]
@@ -77,12 +75,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
 
             var decodedAfterEncode = decodeFromLegacy(encodeToLegacy(decoded), name);
 
-            // in this process, we may lose some detail in the control points section.
+            compareBeatmaps(decoded, decodedAfterEncode);
-            // let's focus on only the hitobjects.
-            var originalHitObjects = decoded.beatmap.HitObjects.Serialize();
-            var newHitObjects = decodedAfterEncode.beatmap.HitObjects.Serialize();
-
-            Assert.That(newHitObjects, Is.EqualTo(originalHitObjects));
 
             ControlPointInfo removeLegacyControlPointTypes(ControlPointInfo controlPointInfo)
             {
@@ -97,7 +90,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
                     // completely ignore "legacy" types, which have been moved to HitObjects.
                     // even though these would mostly be ignored by the Add call, they will still be available in groups,
                     // which isn't what we want to be testing here.
-                    if (point is SampleControlPoint)
+                    if (point is SampleControlPoint || point is DifficultyControlPoint)
                         continue;
 
                     newControlPoints.Add(point.Time, point.DeepClone());
@@ -107,6 +100,19 @@ namespace osu.Game.Tests.Beatmaps.Formats
             }
         }
 
+        private void compareBeatmaps((IBeatmap beatmap, TestLegacySkin skin) expected, (IBeatmap beatmap, TestLegacySkin skin) actual)
+        {
+            // Check all control points that are still considered to be at a global level.
+            Assert.That(expected.beatmap.ControlPointInfo.TimingPoints.Serialize(), Is.EqualTo(actual.beatmap.ControlPointInfo.TimingPoints.Serialize()));
+            Assert.That(expected.beatmap.ControlPointInfo.EffectPoints.Serialize(), Is.EqualTo(actual.beatmap.ControlPointInfo.EffectPoints.Serialize()));
+
+            // Check all hitobjects.
+            Assert.That(expected.beatmap.HitObjects.Serialize(), Is.EqualTo(actual.beatmap.HitObjects.Serialize()));
+
+            // Check skin.
+            Assert.IsTrue(areComboColoursEqual(expected.skin.Configuration, actual.skin.Configuration));
+        }
+
         [Test]
         public void TestEncodeMultiSegmentSliderWithFloatingPointError()
         {
@@ -156,7 +162,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
             }
         }
 
-        private (IBeatmap beatmap, TestLegacySkin beatmapSkin) decodeFromLegacy(Stream stream, string name)
+        private (IBeatmap beatmap, TestLegacySkin skin) decodeFromLegacy(Stream stream, string name)
         {
             using (var reader = new LineBufferedReader(stream))
             {
@@ -174,7 +180,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
             }
         }
 
-        private MemoryStream encodeToLegacy((IBeatmap beatmap, ISkin beatmapSkin) fullBeatmap)
+        private MemoryStream encodeToLegacy((IBeatmap beatmap, ISkin skin) fullBeatmap)
         {
             var (beatmap, beatmapSkin) = fullBeatmap;
             var stream = new MemoryStream();

osu.Game.Tests/Beatmaps/IO/OszArchiveReaderTest.cs

@@ -77,8 +77,7 @@ namespace osu.Game.Tests.Beatmaps.IO
             {
                 var reader = new ZipArchiveReader(osz);
 
-                using (var stream = new StreamReader(
+                using (var stream = new StreamReader(reader.GetStream("Soleily - Renatus (Deif) [Platter].osu")))
-                    reader.GetStream("Soleily - Renatus (Deif) [Platter].osu")))
                 {
                     Assert.AreEqual("osu file format v13", stream.ReadLine()?.Trim());
                 }

osu.Game.Tests/Chat/MessageFormatterTests.cs

@@ -509,5 +509,17 @@ namespace osu.Game.Tests.Chat
             Assert.AreEqual(LinkAction.External, result.Action);
             Assert.AreEqual("/relative", result.Argument);
         }
+
+        [TestCase("https://dev.ppy.sh/home/changelog", "")]
+        [TestCase("https://dev.ppy.sh/home/changelog/lazer/2021.1012", "lazer/2021.1012")]
+        public void TestChangelogLinks(string link, string expectedArg)
+        {
+            MessageFormatter.WebsiteRootUrl = "dev.ppy.sh";
+
+            LinkDetails result = MessageFormatter.GetLinkDetails(link);
+
+            Assert.AreEqual(LinkAction.OpenChangelog, result.Action);
+            Assert.AreEqual(expectedArg, result.Argument);
+        }
     }
 }

osu.Game.Tests/Database/BeatmapImporterTests.cs

@@ -0,0 +1,820 @@
+// 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.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework.Extensions;
+using osu.Framework.Extensions.ObjectExtensions;
+using osu.Framework.Logging;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
+using osu.Game.IO.Archives;
+using osu.Game.Models;
+using osu.Game.Stores;
+using osu.Game.Tests.Resources;
+using Realms;
+using SharpCompress.Archives;
+using SharpCompress.Archives.Zip;
+using SharpCompress.Common;
+using SharpCompress.Writers.Zip;
+
+#nullable enable
+
+namespace osu.Game.Tests.Database
+{
+    [TestFixture]
+    public class BeatmapImporterTests : RealmTest
+    {
+        [Test]
+        public void TestImportBeatmapThenCleanup()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using (var importer = new BeatmapImporter(realmFactory, storage))
+                using (new RealmRulesetStore(realmFactory, storage))
+                {
+                    ILive<RealmBeatmapSet>? imported;
+
+                    using (var reader = new ZipArchiveReader(TestResources.GetTestBeatmapStream()))
+                        imported = await importer.Import(reader);
+
+                    Assert.AreEqual(1, realmFactory.Context.All<RealmBeatmapSet>().Count());
+
+                    Assert.NotNull(imported);
+                    Debug.Assert(imported != null);
+
+                    imported.PerformWrite(s => s.DeletePending = true);
+
+                    Assert.AreEqual(1, realmFactory.Context.All<RealmBeatmapSet>().Count(s => s.DeletePending));
+                }
+            });
+
+            Logger.Log("Running with no work to purge pending deletions");
+
+            RunTestWithRealm((realmFactory, _) => { Assert.AreEqual(0, realmFactory.Context.All<RealmBeatmapSet>().Count()); });
+        }
+
+        [Test]
+        public void TestImportWhenClosed()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                await LoadOszIntoStore(importer, realmFactory.Context);
+            });
+        }
+
+        [Test]
+        public void TestImportThenDelete()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                deleteBeatmapSet(imported, realmFactory.Context);
+            });
+        }
+
+        [Test]
+        public void TestImportThenDeleteFromStream()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var tempPath = TestResources.GetTestBeatmapForImport();
+
+                ILive<RealmBeatmapSet>? importedSet;
+
+                using (var stream = File.OpenRead(tempPath))
+                {
+                    importedSet = await importer.Import(new ImportTask(stream, Path.GetFileName(tempPath)));
+                    ensureLoaded(realmFactory.Context);
+                }
+
+                Assert.NotNull(importedSet);
+                Debug.Assert(importedSet != null);
+
+                Assert.IsTrue(File.Exists(tempPath), "Stream source file somehow went missing");
+                File.Delete(tempPath);
+
+                var imported = realmFactory.Context.All<RealmBeatmapSet>().First(beatmapSet => beatmapSet.ID == importedSet.ID);
+
+                deleteBeatmapSet(imported, realmFactory.Context);
+            });
+        }
+
+        [Test]
+        public void TestImportThenImport()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+                var importedSecondTime = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                // check the newly "imported" beatmap is actually just the restored previous import. since it matches hash.
+                Assert.IsTrue(imported.ID == importedSecondTime.ID);
+                Assert.IsTrue(imported.Beatmaps.First().ID == importedSecondTime.Beatmaps.First().ID);
+
+                checkBeatmapSetCount(realmFactory.Context, 1);
+                checkSingleReferencedFileCount(realmFactory.Context, 18);
+            });
+        }
+
+        [Test]
+        public void TestImportThenImportWithReZip()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                Directory.CreateDirectory(extractedFolder);
+
+                try
+                {
+                    var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                    string hashBefore = hashFile(temp);
+
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(extractedFolder);
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    // zip files differ because different compression or encoder.
+                    Assert.AreNotEqual(hashBefore, hashFile(temp));
+
+                    var importedSecondTime = await importer.Import(new ImportTask(temp));
+
+                    ensureLoaded(realmFactory.Context);
+
+                    Assert.NotNull(importedSecondTime);
+                    Debug.Assert(importedSecondTime != null);
+
+                    // but contents doesn't, so existing should still be used.
+                    Assert.IsTrue(imported.ID == importedSecondTime.ID);
+                    Assert.IsTrue(imported.Beatmaps.First().ID == importedSecondTime.PerformRead(s => s.Beatmaps.First().ID));
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        public void TestImportThenImportWithChangedHashedFile()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                Directory.CreateDirectory(extractedFolder);
+
+                try
+                {
+                    var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                    await createScoreForBeatmap(realmFactory.Context, imported.Beatmaps.First());
+
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(extractedFolder);
+
+                    // arbitrary write to hashed file
+                    // this triggers the special BeatmapManager.PreImport deletion/replacement flow.
+                    using (var sw = new FileInfo(Directory.GetFiles(extractedFolder, "*.osu").First()).AppendText())
+                        await sw.WriteLineAsync("// changed");
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    var importedSecondTime = await importer.Import(new ImportTask(temp));
+
+                    ensureLoaded(realmFactory.Context);
+
+                    // check the newly "imported" beatmap is not the original.
+                    Assert.NotNull(importedSecondTime);
+                    Debug.Assert(importedSecondTime != null);
+
+                    Assert.IsTrue(imported.ID != importedSecondTime.ID);
+                    Assert.IsTrue(imported.Beatmaps.First().ID != importedSecondTime.PerformRead(s => s.Beatmaps.First().ID));
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        [Ignore("intentionally broken by import optimisations")]
+        public void TestImportThenImportWithChangedFile()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                Directory.CreateDirectory(extractedFolder);
+
+                try
+                {
+                    var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(extractedFolder);
+
+                    // arbitrary write to non-hashed file
+                    using (var sw = new FileInfo(Directory.GetFiles(extractedFolder, "*.mp3").First()).AppendText())
+                        await sw.WriteLineAsync("text");
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    var importedSecondTime = await importer.Import(new ImportTask(temp));
+
+                    ensureLoaded(realmFactory.Context);
+
+                    Assert.NotNull(importedSecondTime);
+                    Debug.Assert(importedSecondTime != null);
+
+                    // check the newly "imported" beatmap is not the original.
+                    Assert.IsTrue(imported.ID != importedSecondTime.ID);
+                    Assert.IsTrue(imported.Beatmaps.First().ID != importedSecondTime.PerformRead(s => s.Beatmaps.First().ID));
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        public void TestImportThenImportWithDifferentFilename()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                Directory.CreateDirectory(extractedFolder);
+
+                try
+                {
+                    var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(extractedFolder);
+
+                    // change filename
+                    var firstFile = new FileInfo(Directory.GetFiles(extractedFolder).First());
+                    firstFile.MoveTo(Path.Combine(firstFile.DirectoryName.AsNonNull(), $"{firstFile.Name}-changed{firstFile.Extension}"));
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    var importedSecondTime = await importer.Import(new ImportTask(temp));
+
+                    ensureLoaded(realmFactory.Context);
+
+                    Assert.NotNull(importedSecondTime);
+                    Debug.Assert(importedSecondTime != null);
+
+                    // check the newly "imported" beatmap is not the original.
+                    Assert.IsTrue(imported.ID != importedSecondTime.ID);
+                    Assert.IsTrue(imported.Beatmaps.First().ID != importedSecondTime.PerformRead(s => s.Beatmaps.First().ID));
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        [Ignore("intentionally broken by import optimisations")]
+        public void TestImportCorruptThenImport()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                var firstFile = imported.Files.First();
+
+                long originalLength;
+                using (var stream = storage.GetStream(firstFile.File.StoragePath))
+                    originalLength = stream.Length;
+
+                using (var stream = storage.GetStream(firstFile.File.StoragePath, FileAccess.Write, FileMode.Create))
+                    stream.WriteByte(0);
+
+                var importedSecondTime = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                using (var stream = storage.GetStream(firstFile.File.StoragePath))
+                    Assert.AreEqual(stream.Length, originalLength, "Corruption was not fixed on second import");
+
+                // check the newly "imported" beatmap is actually just the restored previous import. since it matches hash.
+                Assert.IsTrue(imported.ID == importedSecondTime.ID);
+                Assert.IsTrue(imported.Beatmaps.First().ID == importedSecondTime.Beatmaps.First().ID);
+
+                checkBeatmapSetCount(realmFactory.Context, 1);
+                checkSingleReferencedFileCount(realmFactory.Context, 18);
+            });
+        }
+
+        [Test]
+        public void TestRollbackOnFailure()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                int loggedExceptionCount = 0;
+
+                Logger.NewEntry += l =>
+                {
+                    if (l.Target == LoggingTarget.Database && l.Exception != null)
+                        Interlocked.Increment(ref loggedExceptionCount);
+                };
+
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                realmFactory.Context.Write(() => imported.Hash += "-changed");
+
+                checkBeatmapSetCount(realmFactory.Context, 1);
+                checkBeatmapCount(realmFactory.Context, 12);
+                checkSingleReferencedFileCount(realmFactory.Context, 18);
+
+                var brokenTempFilename = TestResources.GetTestBeatmapForImport();
+
+                MemoryStream brokenOsu = new MemoryStream();
+                MemoryStream brokenOsz = new MemoryStream(await File.ReadAllBytesAsync(brokenTempFilename));
+
+                File.Delete(brokenTempFilename);
+
+                using (var outStream = File.Open(brokenTempFilename, FileMode.CreateNew))
+                using (var zip = ZipArchive.Open(brokenOsz))
+                {
+                    zip.AddEntry("broken.osu", brokenOsu, false);
+                    zip.SaveTo(outStream, CompressionType.Deflate);
+                }
+
+                // this will trigger purging of the existing beatmap (online set id match) but should rollback due to broken osu.
+                try
+                {
+                    await importer.Import(new ImportTask(brokenTempFilename));
+                }
+                catch
+                {
+                }
+
+                checkBeatmapSetCount(realmFactory.Context, 1);
+                checkBeatmapCount(realmFactory.Context, 12);
+
+                checkSingleReferencedFileCount(realmFactory.Context, 18);
+
+                Assert.AreEqual(1, loggedExceptionCount);
+
+                File.Delete(brokenTempFilename);
+            });
+        }
+
+        [Test]
+        public void TestImportThenDeleteThenImport()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                deleteBeatmapSet(imported, realmFactory.Context);
+
+                var importedSecondTime = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                // check the newly "imported" beatmap is actually just the restored previous import. since it matches hash.
+                Assert.IsTrue(imported.ID == importedSecondTime.ID);
+                Assert.IsTrue(imported.Beatmaps.First().ID == importedSecondTime.Beatmaps.First().ID);
+            });
+        }
+
+        [Test]
+        public void TestImportThenDeleteThenImportWithOnlineIDsMissing()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var imported = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                realmFactory.Context.Write(() =>
+                {
+                    foreach (var b in imported.Beatmaps)
+                        b.OnlineID = -1;
+                });
+
+                deleteBeatmapSet(imported, realmFactory.Context);
+
+                var importedSecondTime = await LoadOszIntoStore(importer, realmFactory.Context);
+
+                // check the newly "imported" beatmap has been reimported due to mismatch (even though hashes matched)
+                Assert.IsTrue(imported.ID != importedSecondTime.ID);
+                Assert.IsTrue(imported.Beatmaps.First().ID != importedSecondTime.Beatmaps.First().ID);
+            });
+        }
+
+        [Test]
+        public void TestImportWithDuplicateBeatmapIDs()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var metadata = new RealmBeatmapMetadata
+                {
+                    Artist = "SomeArtist",
+                    Author = "SomeAuthor"
+                };
+
+                var ruleset = realmFactory.Context.All<RealmRuleset>().First();
+
+                var toImport = new RealmBeatmapSet
+                {
+                    OnlineID = 1,
+                    Beatmaps =
+                    {
+                        new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata)
+                        {
+                            OnlineID = 2,
+                        },
+                        new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata)
+                        {
+                            OnlineID = 2,
+                            Status = BeatmapSetOnlineStatus.Loved,
+                        }
+                    }
+                };
+
+                var imported = await importer.Import(toImport);
+
+                Assert.NotNull(imported);
+                Debug.Assert(imported != null);
+
+                Assert.AreEqual(-1, imported.PerformRead(s => s.Beatmaps[0].OnlineID));
+                Assert.AreEqual(-1, imported.PerformRead(s => s.Beatmaps[1].OnlineID));
+            });
+        }
+
+        [Test]
+        public void TestImportWhenFileOpen()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+                using (File.OpenRead(temp))
+                    await importer.Import(temp);
+                ensureLoaded(realmFactory.Context);
+                File.Delete(temp);
+                Assert.IsFalse(File.Exists(temp), "We likely held a read lock on the file when we shouldn't");
+            });
+        }
+
+        [Test]
+        public void TestImportWithDuplicateHashes()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                Directory.CreateDirectory(extractedFolder);
+
+                try
+                {
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(extractedFolder);
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.AddEntry("duplicate.osu", Directory.GetFiles(extractedFolder, "*.osu").First());
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    await importer.Import(temp);
+
+                    ensureLoaded(realmFactory.Context);
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        public void TestImportNestedStructure()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                string subfolder = Path.Combine(extractedFolder, "subfolder");
+
+                Directory.CreateDirectory(subfolder);
+
+                try
+                {
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(subfolder);
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    var imported = await importer.Import(new ImportTask(temp));
+
+                    Assert.NotNull(imported);
+                    Debug.Assert(imported != null);
+
+                    ensureLoaded(realmFactory.Context);
+
+                    Assert.IsFalse(imported.PerformRead(s => s.Files.Any(f => f.Filename.Contains("subfolder"))), "Files contain common subfolder");
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        public void TestImportWithIgnoredDirectoryInArchive()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+
+                string extractedFolder = $"{temp}_extracted";
+                string dataFolder = Path.Combine(extractedFolder, "actual_data");
+                string resourceForkFolder = Path.Combine(extractedFolder, "__MACOSX");
+                string resourceForkFilePath = Path.Combine(resourceForkFolder, ".extracted");
+
+                Directory.CreateDirectory(dataFolder);
+                Directory.CreateDirectory(resourceForkFolder);
+
+                using (var resourceForkFile = File.CreateText(resourceForkFilePath))
+                {
+                    await resourceForkFile.WriteLineAsync("adding content so that it's not empty");
+                }
+
+                try
+                {
+                    using (var zip = ZipArchive.Open(temp))
+                        zip.WriteToDirectory(dataFolder);
+
+                    using (var zip = ZipArchive.Create())
+                    {
+                        zip.AddAllFromDirectory(extractedFolder);
+                        zip.SaveTo(temp, new ZipWriterOptions(CompressionType.Deflate));
+                    }
+
+                    var imported = await importer.Import(new ImportTask(temp));
+
+                    Assert.NotNull(imported);
+                    Debug.Assert(imported != null);
+
+                    ensureLoaded(realmFactory.Context);
+
+                    Assert.IsFalse(imported.PerformRead(s => s.Files.Any(f => f.Filename.Contains("__MACOSX"))), "Files contain resource fork folder, which should be ignored");
+                    Assert.IsFalse(imported.PerformRead(s => s.Files.Any(f => f.Filename.Contains("actual_data"))), "Files contain common subfolder");
+                }
+                finally
+                {
+                    Directory.Delete(extractedFolder, true);
+                }
+            });
+        }
+
+        [Test]
+        public void TestUpdateBeatmapInfo()
+        {
+            RunTestWithRealmAsync(async (realmFactory, storage) =>
+            {
+                using var importer = new BeatmapImporter(realmFactory, storage);
+                using var store = new RealmRulesetStore(realmFactory, storage);
+
+                var temp = TestResources.GetTestBeatmapForImport();
+                await importer.Import(temp);
+
+                // Update via the beatmap, not the beatmap info, to ensure correct linking
+                RealmBeatmapSet setToUpdate = realmFactory.Context.All<RealmBeatmapSet>().First();
+
+                var beatmapToUpdate = setToUpdate.Beatmaps.First();
+
+                realmFactory.Context.Write(() => beatmapToUpdate.DifficultyName = "updated");
+
+                RealmBeatmap updatedInfo = realmFactory.Context.All<RealmBeatmap>().First(b => b.ID == beatmapToUpdate.ID);
+                Assert.That(updatedInfo.DifficultyName, Is.EqualTo("updated"));
+            });
+        }
+
+        public static async Task<RealmBeatmapSet?> LoadQuickOszIntoOsu(BeatmapImporter importer, Realm realm)
+        {
+            var temp = TestResources.GetQuickTestBeatmapForImport();
+
+            var importedSet = await importer.Import(new ImportTask(temp));
+
+            Assert.NotNull(importedSet);
+
+            ensureLoaded(realm);
+
+            waitForOrAssert(() => !File.Exists(temp), "Temporary file still exists after standard import", 5000);
+
+            return realm.All<RealmBeatmapSet>().FirstOrDefault(beatmapSet => beatmapSet.ID == importedSet!.ID);
+        }
+
+        public static async Task<RealmBeatmapSet> LoadOszIntoStore(BeatmapImporter importer, Realm realm, string? path = null, bool virtualTrack = false)
+        {
+            var temp = path ?? TestResources.GetTestBeatmapForImport(virtualTrack);
+
+            var importedSet = await importer.Import(new ImportTask(temp));
+
+            Assert.NotNull(importedSet);
+            Debug.Assert(importedSet != null);
+
+            ensureLoaded(realm);
+
+            waitForOrAssert(() => !File.Exists(temp), "Temporary file still exists after standard import", 5000);
+
+            return realm.All<RealmBeatmapSet>().First(beatmapSet => beatmapSet.ID == importedSet.ID);
+        }
+
+        private void deleteBeatmapSet(RealmBeatmapSet imported, Realm realm)
+        {
+            realm.Write(() => imported.DeletePending = true);
+
+            checkBeatmapSetCount(realm, 0);
+            checkBeatmapSetCount(realm, 1, true);
+
+            Assert.IsTrue(realm.All<RealmBeatmapSet>().First(_ => true).DeletePending);
+        }
+
+        private static Task createScoreForBeatmap(Realm realm, RealmBeatmap beatmap)
+        {
+            // TODO: reimplement when we have score support in realm.
+            // return ImportScoreTest.LoadScoreIntoOsu(osu, new ScoreInfo
+            // {
+            //     OnlineScoreID = 2,
+            //     Beatmap = beatmap,
+            //     BeatmapInfoID = beatmap.ID
+            // }, new ImportScoreTest.TestArchiveReader());
+
+            return Task.CompletedTask;
+        }
+
+        private static void checkBeatmapSetCount(Realm realm, int expected, bool includeDeletePending = false)
+        {
+            Assert.AreEqual(expected, includeDeletePending
+                ? realm.All<RealmBeatmapSet>().Count()
+                : realm.All<RealmBeatmapSet>().Count(s => !s.DeletePending));
+        }
+
+        private static string hashFile(string filename)
+        {
+            using (var s = File.OpenRead(filename))
+                return s.ComputeMD5Hash();
+        }
+
+        private static void checkBeatmapCount(Realm realm, int expected)
+        {
+            Assert.AreEqual(expected, realm.All<RealmBeatmap>().Where(_ => true).ToList().Count);
+        }
+
+        private static void checkSingleReferencedFileCount(Realm realm, int expected)
+        {
+            int singleReferencedCount = 0;
+
+            foreach (var f in realm.All<RealmFile>())
+            {
+                if (f.BacklinksCount == 1)
+                    singleReferencedCount++;
+            }
+
+            Assert.AreEqual(expected, singleReferencedCount);
+        }
+
+        private static void ensureLoaded(Realm realm, int timeout = 60000)
+        {
+            IQueryable<RealmBeatmapSet>? resultSets = null;
+
+            waitForOrAssert(() => (resultSets = realm.All<RealmBeatmapSet>().Where(s => !s.DeletePending && s.OnlineID == 241526)).Any(),
+                @"BeatmapSet did not import to the database in allocated time.", timeout);
+
+            // ensure we were stored to beatmap database backing...
+            Assert.IsTrue(resultSets?.Count() == 1, $@"Incorrect result count found ({resultSets?.Count()} but should be 1).");
+
+            IEnumerable<RealmBeatmapSet> queryBeatmapSets() => realm.All<RealmBeatmapSet>().Where(s => !s.DeletePending && s.OnlineID == 241526);
+
+            var set = queryBeatmapSets().First();
+
+            // ReSharper disable once PossibleUnintendedReferenceComparison
+            IEnumerable<RealmBeatmap> queryBeatmaps() => realm.All<RealmBeatmap>().Where(s => s.BeatmapSet != null && s.BeatmapSet == set);
+
+            waitForOrAssert(() => queryBeatmaps().Count() == 12, @"Beatmaps did not import to the database in allocated time", timeout);
+            waitForOrAssert(() => queryBeatmapSets().Count() == 1, @"BeatmapSet did not import to the database in allocated time", timeout);
+
+            int countBeatmapSetBeatmaps = 0;
+            int countBeatmaps = 0;
+
+            waitForOrAssert(() =>
+                    (countBeatmapSetBeatmaps = queryBeatmapSets().First().Beatmaps.Count) ==
+                    (countBeatmaps = queryBeatmaps().Count()),
+                $@"Incorrect database beatmap count post-import ({countBeatmaps} but should be {countBeatmapSetBeatmaps}).", timeout);
+
+            foreach (RealmBeatmap b in set.Beatmaps)
+                Assert.IsTrue(set.Beatmaps.Any(c => c.OnlineID == b.OnlineID));
+            Assert.IsTrue(set.Beatmaps.Count > 0);
+        }
+
+        private static void waitForOrAssert(Func<bool> result, string failureMessage, int timeout = 60000)
+        {
+            const int sleep = 200;
+
+            while (timeout > 0)
+            {
+                Thread.Sleep(sleep);
+                timeout -= sleep;
+
+                if (result())
+                    return;
+            }
+
+            Assert.Fail(failureMessage);
+        }
+    }
+}

osu.Game.Tests/Database/FileStoreTests.cs

@@ -0,0 +1,114 @@
+// 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.Diagnostics;
+using System.IO;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Logging;
+using osu.Game.Models;
+using osu.Game.Stores;
+
+#nullable enable
+
+namespace osu.Game.Tests.Database
+{
+    public class FileStoreTests : RealmTest
+    {
+        [Test]
+        public void TestImportFile()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var realm = realmFactory.Context;
+                var files = new RealmFileStore(realmFactory, storage);
+
+                var testData = new MemoryStream(new byte[] { 0, 1, 2, 3 });
+
+                realm.Write(() => files.Add(testData, realm));
+
+                Assert.True(files.Storage.Exists("0/05/054edec1d0211f624fed0cbca9d4f9400b0e491c43742af2c5b0abebf0c990d8"));
+                Assert.True(files.Storage.Exists(realm.All<RealmFile>().First().StoragePath));
+            });
+        }
+
+        [Test]
+        public void TestImportSameFileTwice()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var realm = realmFactory.Context;
+                var files = new RealmFileStore(realmFactory, storage);
+
+                var testData = new MemoryStream(new byte[] { 0, 1, 2, 3 });
+
+                realm.Write(() => files.Add(testData, realm));
+                realm.Write(() => files.Add(testData, realm));
+
+                Assert.AreEqual(1, realm.All<RealmFile>().Count());
+            });
+        }
+
+        [Test]
+        public void TestDontPurgeReferenced()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var realm = realmFactory.Context;
+                var files = new RealmFileStore(realmFactory, storage);
+
+                var file = realm.Write(() => files.Add(new MemoryStream(new byte[] { 0, 1, 2, 3 }), realm));
+
+                var timer = new Stopwatch();
+                timer.Start();
+
+                realm.Write(() =>
+                {
+                    // attach the file to an arbitrary beatmap
+                    var beatmapSet = CreateBeatmapSet(CreateRuleset());
+
+                    beatmapSet.Files.Add(new RealmNamedFileUsage(file, "arbitrary.resource"));
+
+                    realm.Add(beatmapSet);
+                });
+
+                Logger.Log($"Import complete at {timer.ElapsedMilliseconds}");
+
+                string path = file.StoragePath;
+
+                Assert.True(realm.All<RealmFile>().Any());
+                Assert.True(files.Storage.Exists(path));
+
+                files.Cleanup();
+                Logger.Log($"Cleanup complete at {timer.ElapsedMilliseconds}");
+
+                Assert.True(realm.All<RealmFile>().Any());
+                Assert.True(file.IsValid);
+                Assert.True(files.Storage.Exists(path));
+            });
+        }
+
+        [Test]
+        public void TestPurgeUnreferenced()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var realm = realmFactory.Context;
+                var files = new RealmFileStore(realmFactory, storage);
+
+                var file = realm.Write(() => files.Add(new MemoryStream(new byte[] { 0, 1, 2, 3 }), realm));
+
+                string path = file.StoragePath;
+
+                Assert.True(realm.All<RealmFile>().Any());
+                Assert.True(files.Storage.Exists(path));
+
+                files.Cleanup();
+
+                Assert.False(realm.All<RealmFile>().Any());
+                Assert.False(file.IsValid);
+                Assert.False(files.Storage.Exists(path));
+            });
+        }
+    }
+}

osu.Game.Tests/Database/GeneralUsageTests.cs

@@ -1,3 +1,6 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;

osu.Game.Tests/Database/RealmLiveTests.cs

@@ -0,0 +1,213 @@
+// 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.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
+using osu.Game.Models;
+using Realms;
+
+#nullable enable
+
+namespace osu.Game.Tests.Database
+{
+    public class RealmLiveTests : RealmTest
+    {
+        [Test]
+        public void TestLiveCastability()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                RealmLive<RealmBeatmap> beatmap = realmFactory.CreateContext().Write(r => r.Add(new RealmBeatmap(CreateRuleset(), new RealmBeatmapDifficulty(), new RealmBeatmapMetadata()))).ToLive();
+
+                ILive<IBeatmapInfo> iBeatmap = beatmap;
+
+                Assert.AreEqual(0, iBeatmap.Value.Length);
+            });
+        }
+
+        [Test]
+        public void TestValueAccessWithOpenContext()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                RealmLive<RealmBeatmap>? liveBeatmap = null;
+                Task.Factory.StartNew(() =>
+                {
+                    using (var threadContext = realmFactory.CreateContext())
+                    {
+                        var beatmap = threadContext.Write(r => r.Add(new RealmBeatmap(CreateRuleset(), new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                        liveBeatmap = beatmap.ToLive();
+                    }
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+
+                Debug.Assert(liveBeatmap != null);
+
+                Task.Factory.StartNew(() =>
+                {
+                    Assert.DoesNotThrow(() =>
+                    {
+                        using (realmFactory.CreateContext())
+                        {
+                            var resolved = liveBeatmap.Value;
+
+                            Assert.IsTrue(resolved.Realm.IsClosed);
+                            Assert.IsTrue(resolved.IsValid);
+
+                            // can access properties without a crash.
+                            Assert.IsFalse(resolved.Hidden);
+                        }
+                    });
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+            });
+        }
+
+        [Test]
+        public void TestScopedReadWithoutContext()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                RealmLive<RealmBeatmap>? liveBeatmap = null;
+                Task.Factory.StartNew(() =>
+                {
+                    using (var threadContext = realmFactory.CreateContext())
+                    {
+                        var beatmap = threadContext.Write(r => r.Add(new RealmBeatmap(CreateRuleset(), new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                        liveBeatmap = beatmap.ToLive();
+                    }
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+
+                Debug.Assert(liveBeatmap != null);
+
+                Task.Factory.StartNew(() =>
+                {
+                    liveBeatmap.PerformRead(beatmap =>
+                    {
+                        Assert.IsTrue(beatmap.IsValid);
+                        Assert.IsFalse(beatmap.Hidden);
+                    });
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+            });
+        }
+
+        [Test]
+        public void TestScopedWriteWithoutContext()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                RealmLive<RealmBeatmap>? liveBeatmap = null;
+                Task.Factory.StartNew(() =>
+                {
+                    using (var threadContext = realmFactory.CreateContext())
+                    {
+                        var beatmap = threadContext.Write(r => r.Add(new RealmBeatmap(CreateRuleset(), new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                        liveBeatmap = beatmap.ToLive();
+                    }
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+
+                Debug.Assert(liveBeatmap != null);
+
+                Task.Factory.StartNew(() =>
+                {
+                    liveBeatmap.PerformWrite(beatmap => { beatmap.Hidden = true; });
+                    liveBeatmap.PerformRead(beatmap => { Assert.IsTrue(beatmap.Hidden); });
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+            });
+        }
+
+        [Test]
+        public void TestValueAccessWithoutOpenContextFails()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                RealmLive<RealmBeatmap>? liveBeatmap = null;
+                Task.Factory.StartNew(() =>
+                {
+                    using (var threadContext = realmFactory.CreateContext())
+                    {
+                        var beatmap = threadContext.Write(r => r.Add(new RealmBeatmap(CreateRuleset(), new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                        liveBeatmap = beatmap.ToLive();
+                    }
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+
+                Debug.Assert(liveBeatmap != null);
+
+                Task.Factory.StartNew(() =>
+                {
+                    Assert.Throws<InvalidOperationException>(() =>
+                    {
+                        var unused = liveBeatmap.Value;
+                    });
+                }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+            });
+        }
+
+        [Test]
+        public void TestLiveAssumptions()
+        {
+            RunTestWithRealm((realmFactory, _) =>
+            {
+                int changesTriggered = 0;
+
+                using (var updateThreadContext = realmFactory.CreateContext())
+                {
+                    updateThreadContext.All<RealmBeatmap>().SubscribeForNotifications(gotChange);
+                    RealmLive<RealmBeatmap>? liveBeatmap = null;
+
+                    Task.Factory.StartNew(() =>
+                    {
+                        using (var threadContext = realmFactory.CreateContext())
+                        {
+                            var ruleset = CreateRuleset();
+                            var beatmap = threadContext.Write(r => r.Add(new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                            // add a second beatmap to ensure that a full refresh occurs below.
+                            // not just a refresh from the resolved Live.
+                            threadContext.Write(r => r.Add(new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), new RealmBeatmapMetadata())));
+
+                            liveBeatmap = beatmap.ToLive();
+                        }
+                    }, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler).Wait();
+
+                    Debug.Assert(liveBeatmap != null);
+
+                    // not yet seen by main context
+                    Assert.AreEqual(0, updateThreadContext.All<RealmBeatmap>().Count());
+                    Assert.AreEqual(0, changesTriggered);
+
+                    var resolved = liveBeatmap.Value;
+
+                    // retrieval causes an implicit refresh. even changes that aren't related to the retrieval are fired at this point.
+                    Assert.AreEqual(2, updateThreadContext.All<RealmBeatmap>().Count());
+                    Assert.AreEqual(1, changesTriggered);
+
+                    // even though the realm that this instance was resolved for was closed, it's still valid.
+                    Assert.IsTrue(resolved.Realm.IsClosed);
+                    Assert.IsTrue(resolved.IsValid);
+
+                    // can access properties without a crash.
+                    Assert.IsFalse(resolved.Hidden);
+
+                    updateThreadContext.Write(r =>
+                    {
+                        // can use with the main context.
+                        r.Remove(resolved);
+                    });
+                }
+
+                void gotChange(IRealmCollection<RealmBeatmap> sender, ChangeSet changes, Exception error)
+                {
+                    changesTriggered++;
+                }
+            });
+        }
+    }
+}

osu.Game.Tests/Database/RealmTest.cs

@@ -4,12 +4,13 @@
 using System;
 using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
-using Nito.AsyncEx;
 using NUnit.Framework;
+using osu.Framework.Extensions;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
 using osu.Framework.Testing;
 using osu.Game.Database;
+using osu.Game.Models;
 
 #nullable enable
 
@@ -28,7 +29,9 @@ namespace osu.Game.Tests.Database
 
         protected void RunTestWithRealm(Action<RealmContextFactory, Storage> testAction, [CallerMemberName] string caller = "")
         {
-            AsyncContext.Run(() =>
+            using (HeadlessGameHost host = new CleanRunHeadlessGameHost(caller))
+            {
+                host.Run(new RealmTestGame(() =>
                 {
                     var testStorage = storage.GetStorageForDirectory(caller);
 
@@ -43,12 +46,15 @@ namespace osu.Game.Tests.Database
                         realmFactory.Compact();
                         Logger.Log($"Final database size after compact: {getFileSize(testStorage, realmFactory)}");
                     }
-            });
+                }));
+            }
         }
 
         protected void RunTestWithRealmAsync(Func<RealmContextFactory, Storage, Task> testAction, [CallerMemberName] string caller = "")
         {
-            AsyncContext.Run(async () =>
+            using (HeadlessGameHost host = new CleanRunHeadlessGameHost(caller))
+            {
+                host.Run(new RealmTestGame(async () =>
                 {
                     var testStorage = storage.GetStorageForDirectory(caller);
 
@@ -61,11 +67,73 @@ namespace osu.Game.Tests.Database
 
                         Logger.Log($"Final database size: {getFileSize(testStorage, realmFactory)}");
                         realmFactory.Compact();
-                    Logger.Log($"Final database size after compact: {getFileSize(testStorage, realmFactory)}");
                     }
+                }));
+            }
+        }
+
+        protected static RealmBeatmapSet CreateBeatmapSet(RealmRuleset ruleset)
+        {
+            RealmFile createRealmFile() => new RealmFile { Hash = Guid.NewGuid().ToString().ComputeSHA2Hash() };
+
+            var metadata = new RealmBeatmapMetadata
+            {
+                Title = "My Love",
+                Artist = "Kuba Oms"
+            };
+
+            var beatmapSet = new RealmBeatmapSet
+            {
+                Beatmaps =
+                {
+                    new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata) { DifficultyName = "Easy", },
+                    new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata) { DifficultyName = "Normal", },
+                    new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata) { DifficultyName = "Hard", },
+                    new RealmBeatmap(ruleset, new RealmBeatmapDifficulty(), metadata) { DifficultyName = "Insane", }
+                },
+                Files =
+                {
+                    new RealmNamedFileUsage(createRealmFile(), "test [easy].osu"),
+                    new RealmNamedFileUsage(createRealmFile(), "test [normal].osu"),
+                    new RealmNamedFileUsage(createRealmFile(), "test [hard].osu"),
+                    new RealmNamedFileUsage(createRealmFile(), "test [insane].osu"),
+                }
+            };
+
+            for (int i = 0; i < 8; i++)
+                beatmapSet.Files.Add(new RealmNamedFileUsage(createRealmFile(), $"hitsound{i}.mp3"));
+
+            foreach (var b in beatmapSet.Beatmaps)
+                b.BeatmapSet = beatmapSet;
+
+            return beatmapSet;
+        }
+
+        protected static RealmRuleset CreateRuleset() =>
+            new RealmRuleset(0, "osu!", "osu", true);
+
+        private class RealmTestGame : Framework.Game
+        {
+            public RealmTestGame(Func<Task> work)
+            {
+                // ReSharper disable once AsyncVoidLambda
+                Scheduler.Add(async () =>
+                {
+                    await work().ConfigureAwait(true);
+                    Exit();
                 });
             }
 
+            public RealmTestGame(Action work)
+            {
+                Scheduler.Add(() =>
+                {
+                    work();
+                    Exit();
+                });
+            }
+        }
+
         private static long getFileSize(Storage testStorage, RealmContextFactory realmFactory)
         {
             try

osu.Game.Tests/Database/RulesetStoreTests.cs

@@ -0,0 +1,54 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Game.Models;
+using osu.Game.Stores;
+
+namespace osu.Game.Tests.Database
+{
+    public class RulesetStoreTests : RealmTest
+    {
+        [Test]
+        public void TestCreateStore()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var rulesets = new RealmRulesetStore(realmFactory, storage);
+
+                Assert.AreEqual(4, rulesets.AvailableRulesets.Count());
+                Assert.AreEqual(4, realmFactory.Context.All<RealmRuleset>().Count());
+            });
+        }
+
+        [Test]
+        public void TestCreateStoreTwiceDoesntAddRulesetsAgain()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var rulesets = new RealmRulesetStore(realmFactory, storage);
+                var rulesets2 = new RealmRulesetStore(realmFactory, storage);
+
+                Assert.AreEqual(4, rulesets.AvailableRulesets.Count());
+                Assert.AreEqual(4, rulesets2.AvailableRulesets.Count());
+
+                Assert.AreEqual(rulesets.AvailableRulesets.First(), rulesets2.AvailableRulesets.First());
+                Assert.AreEqual(4, realmFactory.Context.All<RealmRuleset>().Count());
+            });
+        }
+
+        [Test]
+        public void TestRetrievedRulesetsAreDetached()
+        {
+            RunTestWithRealm((realmFactory, storage) =>
+            {
+                var rulesets = new RealmRulesetStore(realmFactory, storage);
+
+                Assert.IsTrue((rulesets.AvailableRulesets.First() as RealmRuleset)?.IsManaged == false);
+                Assert.IsTrue((rulesets.GetRuleset(0) as RealmRuleset)?.IsManaged == false);
+                Assert.IsTrue((rulesets.GetRuleset("mania") as RealmRuleset)?.IsManaged == false);
+            });
+        }
+    }
+}

osu.Game.Tests/Editing/Checks/CheckAudioInVideoTest.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.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Moq;
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Checks;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Storyboards;
+using osu.Game.Tests.Beatmaps;
+using osu.Game.Tests.Resources;
+using FileInfo = osu.Game.IO.FileInfo;
+
+namespace osu.Game.Tests.Editing.Checks
+{
+    [TestFixture]
+    public class CheckAudioInVideoTest
+    {
+        private CheckAudioInVideo check;
+        private IBeatmap beatmap;
+
+        [SetUp]
+        public void Setup()
+        {
+            check = new CheckAudioInVideo();
+            beatmap = new Beatmap<HitObject>
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    BeatmapSet = new BeatmapSetInfo
+                    {
+                        Files = new List<BeatmapSetFileInfo>(new[]
+                        {
+                            new BeatmapSetFileInfo
+                            {
+                                Filename = "abc123.mp4",
+                                FileInfo = new FileInfo { Hash = "abcdef" }
+                            }
+                        })
+                    }
+                }
+            };
+        }
+
+        [Test]
+        public void TestRegularVideoFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Videos/test-video.mp4"))
+                Assert.IsEmpty(check.Run(getContext(resourceStream)));
+        }
+
+        [Test]
+        public void TestVideoFileWithAudio()
+        {
+            using (var resourceStream = TestResources.OpenResource("Videos/test-video-with-audio.mp4"))
+            {
+                var issues = check.Run(getContext(resourceStream)).ToList();
+
+                Assert.That(issues, Has.Count.EqualTo(1));
+                Assert.That(issues.Single().Template is CheckAudioInVideo.IssueTemplateHasAudioTrack);
+            }
+        }
+
+        [Test]
+        public void TestVideoFileWithTrackButNoAudio()
+        {
+            using (var resourceStream = TestResources.OpenResource("Videos/test-video-with-track-but-no-audio.mp4"))
+            {
+                var issues = check.Run(getContext(resourceStream)).ToList();
+
+                Assert.That(issues, Has.Count.EqualTo(1));
+                Assert.That(issues.Single().Template is CheckAudioInVideo.IssueTemplateHasAudioTrack);
+            }
+        }
+
+        [Test]
+        public void TestMissingFile()
+        {
+            beatmap.BeatmapInfo.BeatmapSet.Files.Clear();
+
+            var issues = check.Run(getContext(null)).ToList();
+
+            Assert.That(issues, Has.Count.EqualTo(1));
+            Assert.That(issues.Single().Template is CheckAudioInVideo.IssueTemplateMissingFile);
+        }
+
+        private BeatmapVerifierContext getContext(Stream resourceStream)
+        {
+            var storyboard = new Storyboard();
+            var layer = storyboard.GetLayer("Video");
+            layer.Add(new StoryboardVideo("abc123.mp4", 0));
+
+            var mockWorkingBeatmap = new Mock<TestWorkingBeatmap>(beatmap, null, null);
+            mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns(resourceStream);
+            mockWorkingBeatmap.As<IWorkingBeatmap>().SetupGet(w => w.Storyboard).Returns(storyboard);
+
+            return new BeatmapVerifierContext(beatmap, mockWorkingBeatmap.Object);
+        }
+    }
+}

osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs

@@ -0,0 +1,128 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using ManagedBass;
+using Moq;
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Checks;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Tests.Beatmaps;
+using osu.Game.Tests.Resources;
+using osuTK.Audio;
+using FileInfo = osu.Game.IO.FileInfo;
+
+namespace osu.Game.Tests.Editing.Checks
+{
+    [TestFixture]
+    public class CheckTooShortAudioFilesTest
+    {
+        private CheckTooShortAudioFiles check;
+        private IBeatmap beatmap;
+
+        [SetUp]
+        public void Setup()
+        {
+            check = new CheckTooShortAudioFiles();
+            beatmap = new Beatmap<HitObject>
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    BeatmapSet = new BeatmapSetInfo
+                    {
+                        Files = new List<BeatmapSetFileInfo>(new[]
+                        {
+                            new BeatmapSetFileInfo
+                            {
+                                Filename = "abc123.wav",
+                                FileInfo = new FileInfo { Hash = "abcdef" }
+                            }
+                        })
+                    }
+                }
+            };
+
+            // 0 = No output device. This still allows decoding.
+            if (!Bass.Init(0) && Bass.LastError != Errors.Already)
+                throw new AudioException("Could not initialize Bass.");
+        }
+
+        [Test]
+        public void TestDifferentExtension()
+        {
+            beatmap.BeatmapInfo.BeatmapSet.Files.Clear();
+            beatmap.BeatmapInfo.BeatmapSet.Files.Add(new BeatmapSetFileInfo
+            {
+                Filename = "abc123.jpg",
+                FileInfo = new FileInfo { Hash = "abcdef" }
+            });
+
+            // Should fail to load, but not produce an error due to the extension not being expected to load.
+            Assert.IsEmpty(check.Run(getContext(null, allowMissing: true)));
+        }
+
+        [Test]
+        public void TestRegularAudioFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Samples/test-sample.mp3"))
+            {
+                Assert.IsEmpty(check.Run(getContext(resourceStream)));
+            }
+        }
+
+        [Test]
+        public void TestBlankAudioFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Samples/blank.wav"))
+            {
+                // This is a 0 ms duration audio file, commonly used to silence sliderslides/ticks, and so should be fine.
+                Assert.IsEmpty(check.Run(getContext(resourceStream)));
+            }
+        }
+
+        [Test]
+        public void TestTooShortAudioFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Samples/test-sample-cut.mp3"))
+            {
+                var issues = check.Run(getContext(resourceStream)).ToList();
+
+                Assert.That(issues, Has.Count.EqualTo(1));
+                Assert.That(issues.Single().Template is CheckTooShortAudioFiles.IssueTemplateTooShort);
+            }
+        }
+
+        [Test]
+        public void TestMissingAudioFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Samples/missing.mp3"))
+            {
+                Assert.IsEmpty(check.Run(getContext(resourceStream, allowMissing: true)));
+            }
+        }
+
+        [Test]
+        public void TestCorruptAudioFile()
+        {
+            using (var resourceStream = TestResources.OpenResource("Samples/corrupt.wav"))
+            {
+                var issues = check.Run(getContext(resourceStream)).ToList();
+
+                Assert.That(issues, Has.Count.EqualTo(1));
+                Assert.That(issues.Single().Template is CheckTooShortAudioFiles.IssueTemplateBadFormat);
+            }
+        }
+
+        private BeatmapVerifierContext getContext(Stream resourceStream, bool allowMissing = false)
+        {
+            var mockWorkingBeatmap = new Mock<TestWorkingBeatmap>(beatmap, null, null);
+            mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns(resourceStream);
+
+            return new BeatmapVerifierContext(beatmap, mockWorkingBeatmap.Object);
+        }
+    }
+}

osu.Game.Tests/Editing/Checks/CheckZeroByteFilesTest.cs

@@ -0,0 +1,86 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Moq;
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Checks;
+using osu.Game.Rulesets.Objects;
+using FileInfo = osu.Game.IO.FileInfo;
+
+namespace osu.Game.Tests.Editing.Checks
+{
+    [TestFixture]
+    public class CheckZeroByteFilesTest
+    {
+        private CheckZeroByteFiles check;
+        private IBeatmap beatmap;
+
+        [SetUp]
+        public void Setup()
+        {
+            check = new CheckZeroByteFiles();
+            beatmap = new Beatmap<HitObject>
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    BeatmapSet = new BeatmapSetInfo
+                    {
+                        Files = new List<BeatmapSetFileInfo>(new[]
+                        {
+                            new BeatmapSetFileInfo
+                            {
+                                Filename = "abc123.jpg",
+                                FileInfo = new FileInfo { Hash = "abcdef" }
+                            }
+                        })
+                    }
+                }
+            };
+        }
+
+        [Test]
+        public void TestNonZeroBytes()
+        {
+            Assert.IsEmpty(check.Run(getContext(byteLength: 44)));
+        }
+
+        [Test]
+        public void TestZeroBytes()
+        {
+            var issues = check.Run(getContext(byteLength: 0)).ToList();
+
+            Assert.That(issues, Has.Count.EqualTo(1));
+            Assert.That(issues.Single().Template is CheckZeroByteFiles.IssueTemplateZeroBytes);
+        }
+
+        [Test]
+        public void TestMissing()
+        {
+            Assert.IsEmpty(check.Run(getContextMissing()));
+        }
+
+        private BeatmapVerifierContext getContext(long byteLength)
+        {
+            var mockStream = new Mock<Stream>();
+            mockStream.Setup(s => s.Length).Returns(byteLength);
+
+            var mockWorkingBeatmap = new Mock<IWorkingBeatmap>();
+            mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns(mockStream.Object);
+
+            return new BeatmapVerifierContext(beatmap, mockWorkingBeatmap.Object);
+        }
+
+        private BeatmapVerifierContext getContextMissing()
+        {
+            var mockWorkingBeatmap = new Mock<IWorkingBeatmap>();
+            mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns((Stream)null);
+
+            return new BeatmapVerifierContext(beatmap, mockWorkingBeatmap.Object);
+        }
+    }
+}

osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs

@@ -8,6 +8,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Edit;
@@ -55,8 +56,6 @@ namespace osu.Game.Tests.Editing
 
             composer.EditorBeatmap.Difficulty.SliderMultiplier = 1;
             composer.EditorBeatmap.ControlPointInfo.Clear();
-
-            composer.EditorBeatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 1 });
             composer.EditorBeatmap.ControlPointInfo.Add(0, new TimingControlPoint { BeatLength = 1000 });
         });
 
@@ -73,13 +72,13 @@ namespace osu.Game.Tests.Editing
         [TestCase(2)]
         public void TestSpeedMultiplier(float multiplier)
         {
-            AddStep($"set multiplier = {multiplier}", () =>
+            assertSnapDistance(100 * multiplier, new HitObject
             {
-                composer.EditorBeatmap.ControlPointInfo.Clear();
+                DifficultyControlPoint = new DifficultyControlPoint
-                composer.EditorBeatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = multiplier });
+                {
+                    SliderVelocity = multiplier
+                }
             });
-
-            assertSnapDistance(100 * multiplier);
         }
 
         [TestCase(1)]
@@ -197,20 +196,20 @@ namespace osu.Game.Tests.Editing
             assertSnappedDistance(400, 400);
         }
 
-        private void assertSnapDistance(float expectedDistance)
+        private void assertSnapDistance(float expectedDistance, HitObject hitObject = null)
-            => AddAssert($"distance is {expectedDistance}", () => composer.GetBeatSnapDistanceAt(0) == expectedDistance);
+            => AddAssert($"distance is {expectedDistance}", () => composer.GetBeatSnapDistanceAt(hitObject ?? new HitObject()) == expectedDistance);
 
         private void assertDurationToDistance(double duration, float expectedDistance)
-            => AddAssert($"duration = {duration} -> distance = {expectedDistance}", () => composer.DurationToDistance(0, duration) == expectedDistance);
+            => AddAssert($"duration = {duration} -> distance = {expectedDistance}", () => composer.DurationToDistance(new HitObject(), duration) == expectedDistance);
 
         private void assertDistanceToDuration(float distance, double expectedDuration)
-            => AddAssert($"distance = {distance} -> duration = {expectedDuration}", () => composer.DistanceToDuration(0, distance) == expectedDuration);
+            => AddAssert($"distance = {distance} -> duration = {expectedDuration}", () => composer.DistanceToDuration(new HitObject(), distance) == expectedDuration);
 
         private void assertSnappedDuration(float distance, double expectedDuration)
-            => AddAssert($"distance = {distance} -> duration = {expectedDuration} (snapped)", () => composer.GetSnappedDurationFromDistance(0, distance) == expectedDuration);
+            => AddAssert($"distance = {distance} -> duration = {expectedDuration} (snapped)", () => composer.GetSnappedDurationFromDistance(new HitObject(), distance) == expectedDuration);
 
         private void assertSnappedDistance(float distance, float expectedDistance)
-            => AddAssert($"distance = {distance} -> distance = {expectedDistance} (snapped)", () => composer.GetSnappedDistanceFromDistance(0, distance) == expectedDistance);
+            => AddAssert($"distance = {distance} -> distance = {expectedDistance} (snapped)", () => composer.GetSnappedDistanceFromDistance(new HitObject(), distance) == expectedDistance);
 
         private class TestHitObjectComposer : OsuHitObjectComposer
         {

osu.Game.Tests/ImportTest.cs

@@ -17,7 +17,7 @@ namespace osu.Game.Tests
         protected virtual TestOsuGameBase LoadOsuIntoHost(GameHost host, bool withBeatmap = false)
         {
             var osu = new TestOsuGameBase(withBeatmap);
-            Task.Run(() => host.Run(osu))
+            Task.Factory.StartNew(() => host.Run(osu), TaskCreationOptions.LongRunning)
                 .ContinueWith(t => Assert.Fail($"Host threw exception {t.Exception}"), TaskContinuationOptions.OnlyOnFaulted);
 
             waitForOrAssert(() => osu.IsLoaded, @"osu! failed to start in a reasonable amount of time");

osu.Game.Tests/NonVisual/ControlPointInfoTest.cs

@@ -46,7 +46,7 @@ namespace osu.Game.Tests.NonVisual
         [Test]
         public void TestAddRedundantDifficulty()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             cpi.Add(0, new DifficultyControlPoint()); // is redundant
             cpi.Add(1000, new DifficultyControlPoint()); // is redundant
@@ -55,7 +55,7 @@ namespace osu.Game.Tests.NonVisual
             Assert.That(cpi.DifficultyPoints.Count, Is.EqualTo(0));
             Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(0));
 
-            cpi.Add(1000, new DifficultyControlPoint { SpeedMultiplier = 2 }); // is not redundant
+            cpi.Add(1000, new DifficultyControlPoint { SliderVelocity = 2 }); // is not redundant
 
             Assert.That(cpi.Groups.Count, Is.EqualTo(1));
             Assert.That(cpi.DifficultyPoints.Count, Is.EqualTo(1));
@@ -159,7 +159,7 @@ namespace osu.Game.Tests.NonVisual
         [Test]
         public void TestAddControlPointToGroup()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             var group = cpi.GroupAt(1000, true);
             Assert.That(cpi.Groups.Count, Is.EqualTo(1));
@@ -174,23 +174,23 @@ namespace osu.Game.Tests.NonVisual
         [Test]
         public void TestAddDuplicateControlPointToGroup()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             var group = cpi.GroupAt(1000, true);
             Assert.That(cpi.Groups.Count, Is.EqualTo(1));
 
             group.Add(new DifficultyControlPoint());
-            group.Add(new DifficultyControlPoint { SpeedMultiplier = 2 });
+            group.Add(new DifficultyControlPoint { SliderVelocity = 2 });
 
             Assert.That(group.ControlPoints.Count, Is.EqualTo(1));
             Assert.That(cpi.DifficultyPoints.Count, Is.EqualTo(1));
-            Assert.That(cpi.DifficultyPoints.First().SpeedMultiplier, Is.EqualTo(2));
+            Assert.That(cpi.DifficultyPoints.First().SliderVelocity, Is.EqualTo(2));
         }
 
         [Test]
         public void TestRemoveControlPointFromGroup()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             var group = cpi.GroupAt(1000, true);
             Assert.That(cpi.Groups.Count, Is.EqualTo(1));
@@ -208,14 +208,14 @@ namespace osu.Game.Tests.NonVisual
         [Test]
         public void TestOrdering()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             cpi.Add(0, new TimingControlPoint());
             cpi.Add(1000, new TimingControlPoint { BeatLength = 500 });
             cpi.Add(10000, new TimingControlPoint { BeatLength = 200 });
             cpi.Add(5000, new TimingControlPoint { BeatLength = 100 });
-            cpi.Add(3000, new DifficultyControlPoint { SpeedMultiplier = 2 });
+            cpi.Add(3000, new DifficultyControlPoint { SliderVelocity = 2 });
-            cpi.GroupAt(7000, true).Add(new DifficultyControlPoint { SpeedMultiplier = 4 });
+            cpi.GroupAt(7000, true).Add(new DifficultyControlPoint { SliderVelocity = 4 });
             cpi.GroupAt(1000).Add(new SampleControlPoint { SampleVolume = 0 });
             cpi.GroupAt(8000, true).Add(new EffectControlPoint { KiaiMode = true });
 
@@ -230,14 +230,14 @@ namespace osu.Game.Tests.NonVisual
         [Test]
         public void TestClear()
         {
-            var cpi = new ControlPointInfo();
+            var cpi = new LegacyControlPointInfo();
 
             cpi.Add(0, new TimingControlPoint());
             cpi.Add(1000, new TimingControlPoint { BeatLength = 500 });
             cpi.Add(10000, new TimingControlPoint { BeatLength = 200 });
             cpi.Add(5000, new TimingControlPoint { BeatLength = 100 });
-            cpi.Add(3000, new DifficultyControlPoint { SpeedMultiplier = 2 });
+            cpi.Add(3000, new DifficultyControlPoint { SliderVelocity = 2 });
-            cpi.GroupAt(7000, true).Add(new DifficultyControlPoint { SpeedMultiplier = 4 });
+            cpi.GroupAt(7000, true).Add(new DifficultyControlPoint { SliderVelocity = 4 });
             cpi.GroupAt(1000).Add(new SampleControlPoint { SampleVolume = 0 });
             cpi.GroupAt(8000, true).Add(new EffectControlPoint { KiaiMode = true });
 

osu.Game.Tests/Online/TestSceneOnlinePlayBeatmapAvailabilityTracker.cs

@@ -168,14 +168,14 @@ namespace osu.Game.Tests.Online
                 return new TestBeatmapModelManager(this, storage, contextFactory, rulesets, api, host);
             }
 
-            protected override BeatmapModelDownloader CreateBeatmapModelDownloader(BeatmapModelManager modelManager, IAPIProvider api, GameHost host)
+            protected override BeatmapModelDownloader CreateBeatmapModelDownloader(IBeatmapModelManager manager, IAPIProvider api, GameHost host)
             {
-                return new TestBeatmapModelDownloader(modelManager, api, host);
+                return new TestBeatmapModelDownloader(manager, api, host);
             }
 
             internal class TestBeatmapModelDownloader : BeatmapModelDownloader
             {
-                public TestBeatmapModelDownloader(BeatmapModelManager modelManager, IAPIProvider apiProvider, GameHost gameHost)
+                public TestBeatmapModelDownloader(IBeatmapModelManager modelManager, IAPIProvider apiProvider, GameHost gameHost)
                     : base(modelManager, apiProvider, gameHost)
                 {
                 }

osu.Game.Tests/Resources/duplicate-last-position-slider.osu

@@ -0,0 +1,19 @@
+osu file format v14
+
+[Difficulty]
+HPDrainRate:7
+CircleSize:10
+OverallDifficulty:9
+ApproachRate:10
+SliderMultiplier:0.4
+SliderTickRate:1
+
+[TimingPoints]
+382,923.076923076923,3,2,1,75,1,0
+382,-1000,3,2,1,75,0,0
+
+[HitObjects]
+
+// Importantly, the last position is specified twice.
+// In this case, osu-stable doesn't extend the slider length even when the "expected" length is higher than the actual.
+261,171,25305,6,0,B|262:171|262:171|262:171,1,2,8|0,0:0|0:0,0:0:0:0:

osu.Game.Tests/Skins/TestSceneSkinProvidingContainer.cs

@@ -6,7 +6,6 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.OpenGL.Textures;
 using osu.Framework.Graphics.Textures;
@@ -65,10 +64,9 @@ namespace osu.Game.Tests.Skins
 
             public new void TriggerSourceChanged() => base.TriggerSourceChanged();
 
-            protected override void OnSourceChanged()
+            protected override void RefreshSources()
             {
-                ResetSources();
+                SetSources(sources);
-                sources.ForEach(AddSource);
             }
         }
 

osu.Game.Tests/Visual/Audio/TestSceneAudioFilter.cs

@@ -6,6 +6,7 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Track;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -18,16 +19,19 @@ namespace osu.Game.Tests.Visual.Audio
 {
     public class TestSceneAudioFilter : OsuTestScene
     {
-        private OsuSpriteText lowpassText;
+        private OsuSpriteText lowPassText;
-        private AudioFilter lowpassFilter;
+        private AudioFilter lowPassFilter;
 
-        private OsuSpriteText highpassText;
+        private OsuSpriteText highPassText;
-        private AudioFilter highpassFilter;
+        private AudioFilter highPassFilter;
 
         private Track track;
 
         private WaveformTestBeatmap beatmap;
 
+        private OsuSliderBar<int> lowPassSlider;
+        private OsuSliderBar<int> highPassSlider;
+
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
         {
@@ -38,53 +42,89 @@ namespace osu.Game.Tests.Visual.Audio
             {
                 Children = new Drawable[]
                 {
-                    lowpassFilter = new AudioFilter(audio.TrackMixer),
+                    lowPassFilter = new AudioFilter(audio.TrackMixer),
-                    highpassFilter = new AudioFilter(audio.TrackMixer, BQFType.HighPass),
+                    highPassFilter = new AudioFilter(audio.TrackMixer, BQFType.HighPass),
-                    lowpassText = new OsuSpriteText
+                    lowPassText = new OsuSpriteText
                     {
                         Padding = new MarginPadding(20),
-                        Text = $"Low Pass: {lowpassFilter.Cutoff.Value}hz",
+                        Text = $"Low Pass: {lowPassFilter.Cutoff}hz",
                         Font = new FontUsage(size: 40)
                     },
-                    new OsuSliderBar<int>
+                    lowPassSlider = new OsuSliderBar<int>
                     {
                         Width = 500,
                         Height = 50,
                         Padding = new MarginPadding(20),
-                        Current = { BindTarget = lowpassFilter.Cutoff }
+                        Current = new BindableInt
+                        {
+                            MinValue = 0,
+                            MaxValue = AudioFilter.MAX_LOWPASS_CUTOFF,
+                        }
                     },
-                    highpassText = new OsuSpriteText
+                    highPassText = new OsuSpriteText
                     {
                         Padding = new MarginPadding(20),
-                        Text = $"High Pass: {highpassFilter.Cutoff.Value}hz",
+                        Text = $"High Pass: {highPassFilter.Cutoff}hz",
                         Font = new FontUsage(size: 40)
                     },
-                    new OsuSliderBar<int>
+                    highPassSlider = new OsuSliderBar<int>
                     {
                         Width = 500,
                         Height = 50,
                         Padding = new MarginPadding(20),
-                        Current = { BindTarget = highpassFilter.Cutoff }
+                        Current = new BindableInt
+                        {
+                            MinValue = 0,
+                            MaxValue = AudioFilter.MAX_LOWPASS_CUTOFF,
+                        }
                     }
                 }
             });
-            lowpassFilter.Cutoff.ValueChanged += e => lowpassText.Text = $"Low Pass: {e.NewValue}hz";
+
-            highpassFilter.Cutoff.ValueChanged += e => highpassText.Text = $"High Pass: {e.NewValue}hz";
+            lowPassSlider.Current.ValueChanged += e =>
+            {
+                lowPassText.Text = $"Low Pass: {e.NewValue}hz";
+                lowPassFilter.Cutoff = e.NewValue;
+            };
+
+            highPassSlider.Current.ValueChanged += e =>
+            {
+                highPassText.Text = $"High Pass: {e.NewValue}hz";
+                highPassFilter.Cutoff = e.NewValue;
+            };
         }
 
+        #region Overrides of Drawable
+
+        protected override void Update()
+        {
+            base.Update();
+            highPassSlider.Current.Value = highPassFilter.Cutoff;
+            lowPassSlider.Current.Value = lowPassFilter.Cutoff;
+        }
+
+        #endregion
+
         [SetUpSteps]
         public void SetUpSteps()
         {
             AddStep("Play Track", () => track.Start());
+
+            AddStep("Reset filters", () =>
+            {
+                lowPassFilter.Cutoff = AudioFilter.MAX_LOWPASS_CUTOFF;
+                highPassFilter.Cutoff = 0;
+            });
+
             waitTrackPlay();
         }
 
         [Test]
-        public void TestLowPass()
+        public void TestLowPassSweep()
         {
             AddStep("Filter Sweep", () =>
             {
-                lowpassFilter.CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF).Then()
+                lowPassFilter.CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF).Then()
                              .CutoffTo(0, 2000, Easing.OutCubic);
             });
 
@@ -92,7 +132,7 @@ namespace osu.Game.Tests.Visual.Audio
 
             AddStep("Filter Sweep (reverse)", () =>
             {
-                lowpassFilter.CutoffTo(0).Then()
+                lowPassFilter.CutoffTo(0).Then()
                              .CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF, 2000, Easing.InCubic);
             });
 
@@ -101,11 +141,11 @@ namespace osu.Game.Tests.Visual.Audio
         }
 
         [Test]
-        public void TestHighPass()
+        public void TestHighPassSweep()
         {
             AddStep("Filter Sweep", () =>
             {
-                highpassFilter.CutoffTo(0).Then()
+                highPassFilter.CutoffTo(0).Then()
                               .CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF, 2000, Easing.InCubic);
             });
 
@@ -113,7 +153,7 @@ namespace osu.Game.Tests.Visual.Audio
 
             AddStep("Filter Sweep (reverse)", () =>
             {
-                highpassFilter.CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF).Then()
+                highPassFilter.CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF).Then()
                               .CutoffTo(0, 2000, Easing.OutCubic);
             });
 
@@ -123,5 +163,11 @@ namespace osu.Game.Tests.Visual.Audio
         }
 
         private void waitTrackPlay() => AddWaitStep("Let track play", 10);
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+            track?.Dispose();
+        }
     }
 }

osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapSetOnlineStatusPill.cs

@@ -0,0 +1,53 @@
+// 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.IEnumerableExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Drawables;
+using osu.Game.Overlays;
+using osu.Game.Tests.Visual.UserInterface;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.Beatmaps
+{
+    public class TestSceneBeatmapSetOnlineStatusPill : ThemeComparisonTestScene
+    {
+        protected override Drawable CreateContent() => new FillFlowContainer
+        {
+            AutoSizeAxes = Axes.Both,
+            Anchor = Anchor.Centre,
+            Origin = Anchor.Centre,
+            Direction = FillDirection.Vertical,
+            Spacing = new Vector2(0, 10),
+            ChildrenEnumerable = Enum.GetValues(typeof(BeatmapSetOnlineStatus)).Cast<BeatmapSetOnlineStatus>().Select(status => new BeatmapSetOnlineStatusPill
+            {
+                AutoSizeAxes = Axes.Both,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Status = status
+            })
+        };
+
+        private IEnumerable<BeatmapSetOnlineStatusPill> statusPills => this.ChildrenOfType<BeatmapSetOnlineStatusPill>();
+
+        [Test]
+        public void TestFixedWidth()
+        {
+            AddStep("create themed content", () => CreateThemedContent(OverlayColourScheme.Red));
+
+            AddStep("set fixed width", () => statusPills.ForEach(pill =>
+            {
+                pill.AutoSizeAxes = Axes.Y;
+                pill.Width = 90;
+            }));
+            AddStep("unset fixed width", () => statusPills.ForEach(pill => pill.AutoSizeAxes = Axes.Both));
+        }
+    }
+}

osu.Game.Tests/Visual/Components/TestScenePreviewTrackManager.cs

@@ -224,7 +224,7 @@ namespace osu.Game.Tests.Visual.Components
 
             public new PreviewTrack CurrentTrack => base.CurrentTrack;
 
-            protected override TrackManagerPreviewTrack CreatePreviewTrack(BeatmapSetInfo beatmapSetInfo, ITrackStore trackStore) => new TestPreviewTrack(beatmapSetInfo, trackStore);
+            protected override TrackManagerPreviewTrack CreatePreviewTrack(IBeatmapSetInfo beatmapSetInfo, ITrackStore trackStore) => new TestPreviewTrack(beatmapSetInfo, trackStore);
 
             public override bool UpdateSubTree()
             {
@@ -240,7 +240,7 @@ namespace osu.Game.Tests.Visual.Components
 
                 public new Track Track => base.Track;
 
-                public TestPreviewTrack(BeatmapSetInfo beatmapSetInfo, ITrackStore trackManager)
+                public TestPreviewTrack(IBeatmapSetInfo beatmapSetInfo, ITrackStore trackManager)
                     : base(beatmapSetInfo, trackManager)
                 {
                     this.trackManager = trackManager;

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

@@ -7,6 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
@@ -81,7 +82,7 @@ namespace osu.Game.Tests.Visual.Editing
             public new float DistanceSpacing => base.DistanceSpacing;
 
             public TestDistanceSnapGrid(double? endTime = null)
-                : base(grid_position, 0, endTime)
+                : base(new HitObject(), grid_position, 0, endTime)
             {
             }
 
@@ -158,15 +159,15 @@ namespace osu.Game.Tests.Visual.Editing
 
             public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) => new SnapResult(screenSpacePosition, 0);
 
-            public float GetBeatSnapDistanceAt(double referenceTime) => 10;
+            public float GetBeatSnapDistanceAt(HitObject referenceObject) => 10;
 
-            public float DurationToDistance(double referenceTime, double duration) => (float)duration;
+            public float DurationToDistance(HitObject referenceObject, double duration) => (float)duration;
 
-            public double DistanceToDuration(double referenceTime, float distance) => distance;
+            public double DistanceToDuration(HitObject referenceObject, float distance) => distance;
 
-            public double GetSnappedDurationFromDistance(double referenceTime, float distance) => 0;
+            public double GetSnappedDurationFromDistance(HitObject referenceObject, float distance) => 0;
 
-            public float GetSnappedDistanceFromDistance(double referenceTime, float distance) => 0;
+            public float GetSnappedDistanceFromDistance(HitObject referenceObject, float distance) => 0;
         }
     }
 }

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

@@ -8,6 +8,7 @@ using osu.Framework.Testing;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit;
+using osu.Game.Screens.Edit.Setup;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Select;
 using osuTK.Input;
@@ -30,22 +31,41 @@ namespace osu.Game.Tests.Visual.Editing
 
             PushAndConfirm(() => new EditorLoader());
 
-            AddUntilStep("wait for editor load", () => editor != null);
+            AddUntilStep("wait for editor load", () => editor?.IsLoaded == true);
 
-            AddStep("Add timing point", () => editorBeatmap.ControlPointInfo.Add(0, new TimingControlPoint()));
+            AddUntilStep("wait for metadata screen load", () => editor.ChildrenOfType<MetadataSection>().FirstOrDefault()?.IsLoaded == true);
+
+            // We intentionally switch away from the metadata screen, else there is a feedback loop with the textbox handling which causes metadata changes below to get overwritten.
 
             AddStep("Enter compose mode", () => InputManager.Key(Key.F1));
             AddUntilStep("Wait for compose mode load", () => editor.ChildrenOfType<HitObjectComposer>().FirstOrDefault()?.IsLoaded == true);
 
+            AddStep("Set overall difficulty", () => editorBeatmap.Difficulty.OverallDifficulty = 7);
+            AddStep("Set artist and title", () =>
+            {
+                editorBeatmap.BeatmapInfo.Metadata.Artist = "artist";
+                editorBeatmap.BeatmapInfo.Metadata.Title = "title";
+            });
+            AddStep("Set difficulty name", () => editorBeatmap.BeatmapInfo.Version = "difficulty");
+
+            AddStep("Add timing point", () => editorBeatmap.ControlPointInfo.Add(0, new TimingControlPoint()));
+
             AddStep("Change to placement mode", () => InputManager.Key(Key.Number2));
             AddStep("Move to playfield", () => InputManager.MoveMouseTo(Game.ScreenSpaceDrawQuad.Centre));
             AddStep("Place single hitcircle", () => InputManager.Click(MouseButton.Left));
 
-            AddStep("Save and exit", () =>
+            checkMutations();
-            {
+
-                InputManager.Keys(PlatformAction.Save);
+            // After placement these must be non-default as defaults are read-only.
-                InputManager.Key(Key.Escape);
+            AddAssert("Placed object has non-default control points", () =>
-            });
+                editorBeatmap.HitObjects[0].SampleControlPoint != SampleControlPoint.DEFAULT &&
+                editorBeatmap.HitObjects[0].DifficultyControlPoint != DifficultyControlPoint.DEFAULT);
+
+            AddStep("Save", () => InputManager.Keys(PlatformAction.Save));
+
+            checkMutations();
+
+            AddStep("Exit", () => InputManager.Key(Key.Escape));
 
             AddUntilStep("Wait for main menu", () => Game.ScreenStack.CurrentScreen is MainMenu);
 
@@ -56,7 +76,16 @@ namespace osu.Game.Tests.Visual.Editing
             AddStep("Enter editor", () => InputManager.Key(Key.Number5));
 
             AddUntilStep("Wait for editor load", () => editor != null);
+
+            checkMutations();
+        }
+
+        private void checkMutations()
+        {
             AddAssert("Beatmap contains single hitcircle", () => editorBeatmap.HitObjects.Count == 1);
+            AddAssert("Beatmap has correct overall difficulty", () => editorBeatmap.Difficulty.OverallDifficulty == 7);
+            AddAssert("Beatmap has correct metadata", () => editorBeatmap.BeatmapInfo.Metadata.Artist == "artist" && editorBeatmap.BeatmapInfo.Metadata.Title == "title");
+            AddAssert("Beatmap has correct difficulty name", () => editorBeatmap.BeatmapInfo.Version == "difficulty");
         }
     }
 }

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

@@ -20,14 +20,15 @@ namespace osu.Game.Tests.Visual.Gameplay
     /// </summary>
     public abstract class TestSceneAllRulesetPlayers : RateAdjustedBeatmapTestScene
     {
-        protected Player Player;
+        protected Player Player { get; private set; }
+
+        protected OsuConfigManager Config { get; private set; }
 
         [BackgroundDependencyLoader]
         private void load(RulesetStore rulesets)
         {
-            OsuConfigManager manager;
+            Dependencies.Cache(Config = new OsuConfigManager(LocalStorage));
-            Dependencies.Cache(manager = new OsuConfigManager(LocalStorage));
+            Config.GetBindable<double>(OsuSetting.DimLevel).Value = 1.0;
-            manager.GetBindable<double>(OsuSetting.DimLevel).Value = 1.0;
         }
 
         [Test]

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

@@ -2,7 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
+using osu.Game.Configuration;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play;
@@ -17,6 +19,14 @@ namespace osu.Game.Tests.Visual.Gameplay
             return new FailPlayer();
         }
 
+        [Test]
+        public void TestOsuWithoutRedTint()
+        {
+            AddStep("Disable red tint", () => Config.SetValue(OsuSetting.FadePlayfieldWhenHealthLow, false));
+            TestOsu();
+            AddStep("Enable red tint", () => Config.SetValue(OsuSetting.FadePlayfieldWhenHealthLow, true));
+        }
+
         protected override void AddCheckSteps()
         {
             AddUntilStep("wait for fail", () => Player.HasFailed);

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

@@ -103,6 +103,30 @@ namespace osu.Game.Tests.Visual.Gameplay
             checkFrameCount(0);
         }
 
+        [Test]
+        public void TestRatePreservedWhenTimeNotProgressing()
+        {
+            AddStep("set manual clock rate", () => manualClock.Rate = 1);
+            seekManualTo(5000);
+            createStabilityContainer();
+            checkRate(1);
+
+            seekManualTo(10000);
+            checkRate(1);
+
+            AddWaitStep("wait some", 3);
+            checkRate(1);
+
+            seekManualTo(5000);
+            checkRate(-1);
+
+            AddWaitStep("wait some", 3);
+            checkRate(-1);
+
+            seekManualTo(10000);
+            checkRate(1);
+        }
+
         private const int max_frames_catchup = 50;
 
         private void createStabilityContainer(double gameplayStartTime = double.MinValue) => AddStep("create container", () =>
@@ -116,6 +140,9 @@ namespace osu.Game.Tests.Visual.Gameplay
         private void checkFrameCount(int frames) =>
             AddAssert($"elapsed frames is {frames}", () => consumer.ElapsedFrames == frames);
 
+        private void checkRate(double rate) =>
+            AddAssert($"clock rate is {rate}", () => consumer.Clock.Rate == rate);
+
         public class ClockConsumingChild : CompositeDrawable
         {
             private readonly OsuSpriteText text;

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

@@ -291,7 +291,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddUntilStep("wait for current", () => loader.IsCurrentScreen());
 
-            AddAssert($"epilepsy warning {(warning ? "present" : "absent")}", () => this.ChildrenOfType<EpilepsyWarning>().Any() == warning);
+            AddAssert($"epilepsy warning {(warning ? "present" : "absent")}", () => (getWarning() != null) == warning);
 
             if (warning)
             {
@@ -335,12 +335,17 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddUntilStep("wait for current", () => loader.IsCurrentScreen());
 
-            AddUntilStep("wait for epilepsy warning", () => loader.ChildrenOfType<EpilepsyWarning>().Single().Alpha > 0);
+            AddUntilStep("wait for epilepsy warning", () => getWarning().Alpha > 0);
+            AddUntilStep("warning is shown", () => getWarning().State.Value == Visibility.Visible);
+
             AddStep("exit early", () => loader.Exit());
 
+            AddUntilStep("warning is hidden", () => getWarning().State.Value == Visibility.Hidden);
             AddUntilStep("sound volume restored", () => Beatmap.Value.Track.AggregateVolume.Value == 1);
         }
 
+        private EpilepsyWarning getWarning() => loader.ChildrenOfType<EpilepsyWarning>().SingleOrDefault();
+
         private class TestPlayerLoader : PlayerLoader
         {
             public new VisualSettings VisualSettings => base.VisualSettings;

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

@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Threading.Tasks;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Game.Beatmaps;
@@ -10,10 +11,13 @@ using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Online.Solo;
 using osu.Game.Rulesets;
+using osu.Game.Rulesets.Mania;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.Taiko;
+using osu.Game.Scoring;
 using osu.Game.Screens.Ranking;
 using osu.Game.Tests.Beatmaps;
 
@@ -32,7 +36,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 
         protected override bool HasCustomSteps => true;
 
-        protected override TestPlayer CreatePlayer(Ruleset ruleset) => new TestPlayer(false);
+        protected override TestPlayer CreatePlayer(Ruleset ruleset) => new NonImportingPlayer(false);
 
         protected override Ruleset CreatePlayerRuleset() => createCustomRuleset?.Invoke() ?? new OsuRuleset();
 
@@ -86,6 +90,46 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddAssert("ensure passing submission", () => Player.SubmittedScore?.ScoreInfo.Passed == true);
         }
 
+        [Test]
+        public void TestSubmissionForDifferentRuleset()
+        {
+            prepareTokenResponse(true);
+
+            createPlayerTest(createRuleset: () => new TaikoRuleset());
+
+            AddUntilStep("wait for token request", () => Player.TokenCreationRequested);
+
+            AddUntilStep("wait for track to start running", () => Beatmap.Value.Track.IsRunning);
+
+            addFakeHit();
+
+            AddStep("seek to completion", () => Player.GameplayClockContainer.Seek(Player.DrawableRuleset.Objects.Last().GetEndTime()));
+
+            AddUntilStep("results displayed", () => Player.GetChildScreen() is ResultsScreen);
+            AddAssert("ensure passing submission", () => Player.SubmittedScore?.ScoreInfo.Passed == true);
+            AddAssert("submitted score has correct ruleset ID", () => Player.SubmittedScore?.ScoreInfo.RulesetID == new TaikoRuleset().RulesetInfo.ID);
+        }
+
+        [Test]
+        public void TestSubmissionForConvertedBeatmap()
+        {
+            prepareTokenResponse(true);
+
+            createPlayerTest(createRuleset: () => new ManiaRuleset(), createBeatmap: _ => createTestBeatmap(new OsuRuleset().RulesetInfo));
+
+            AddUntilStep("wait for token request", () => Player.TokenCreationRequested);
+
+            AddUntilStep("wait for track to start running", () => Beatmap.Value.Track.IsRunning);
+
+            addFakeHit();
+
+            AddStep("seek to completion", () => Player.GameplayClockContainer.Seek(Player.DrawableRuleset.Objects.Last().GetEndTime()));
+
+            AddUntilStep("results displayed", () => Player.GetChildScreen() is ResultsScreen);
+            AddAssert("ensure passing submission", () => Player.SubmittedScore?.ScoreInfo.Passed == true);
+            AddAssert("submitted score has correct ruleset ID", () => Player.SubmittedScore?.ScoreInfo.RulesetID == new ManiaRuleset().RulesetInfo.ID);
+        }
+
         [Test]
         public void TestNoSubmissionOnExitWithNoToken()
         {
@@ -183,12 +227,13 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddAssert("ensure no submission", () => Player.SubmittedScore == null);
         }
 
-        [Test]
+        [TestCase(null)]
-        public void TestNoSubmissionOnCustomRuleset()
+        [TestCase(10)]
+        public void TestNoSubmissionOnCustomRuleset(int? rulesetId)
         {
             prepareTokenResponse(true);
 
-            createPlayerTest(false, createRuleset: () => new OsuRuleset { RulesetInfo = { ID = 10 } });
+            createPlayerTest(false, createRuleset: () => new OsuRuleset { RulesetInfo = { ID = rulesetId } });
 
             AddUntilStep("wait for token request", () => Player.TokenCreationRequested);
 
@@ -242,5 +287,33 @@ namespace osu.Game.Tests.Visual.Gameplay
                 });
             });
         }
+
+        private class NonImportingPlayer : TestPlayer
+        {
+            public NonImportingPlayer(bool allowPause = true, bool showResults = true, bool pauseOnFocusLost = false)
+                : base(allowPause, showResults, pauseOnFocusLost)
+            {
+            }
+
+            protected override Task ImportScore(Score score)
+            {
+                // It was discovered that Score members could sometimes be half-populated.
+                // In particular, the RulesetID property could be set to 0 even on non-osu! maps.
+                // We want to test that the state of that property is consistent in this test.
+                // EF makes this impossible.
+                //
+                // First off, because of the EF navigational property-explicit foreign key field duality,
+                // it can happen that - for example - the Ruleset navigational property is correctly initialised to mania,
+                // but the RulesetID foreign key property is not initialised and remains 0.
+                // EF silently bypasses this by prioritising the Ruleset navigational property over the RulesetID foreign key one.
+                //
+                // Additionally, adding an entity to an EF DbSet CAUSES SIDE EFFECTS with regard to the foreign key property.
+                // In the above instance, if a ScoreInfo with Ruleset = {mania} and RulesetID = 0 is attached to an EF context,
+                // RulesetID WILL BE SILENTLY SET TO THE CORRECT VALUE of 3.
+                //
+                // For the above reasons, importing is disabled in this test.
+                return Task.CompletedTask;
+            }
+        }
     }
 }

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

@@ -93,9 +93,9 @@ namespace osu.Game.Tests.Visual.Gameplay
 
         private IList<MultiplierControlPoint> testControlPoints => new List<MultiplierControlPoint>
         {
-            new MultiplierControlPoint(time_range) { DifficultyPoint = { SpeedMultiplier = 1.25 } },
+            new MultiplierControlPoint(time_range) { EffectPoint = { ScrollSpeed = 1.25 } },
-            new MultiplierControlPoint(1.5 * time_range) { DifficultyPoint = { SpeedMultiplier = 1 } },
+            new MultiplierControlPoint(1.5 * time_range) { EffectPoint = { ScrollSpeed = 1 } },
-            new MultiplierControlPoint(2 * time_range) { DifficultyPoint = { SpeedMultiplier = 1.5 } }
+            new MultiplierControlPoint(2 * time_range) { EffectPoint = { ScrollSpeed = 1.5 } }
         };
 
         [Test]

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

@@ -0,0 +1,51 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Game.Online.API;
+using osu.Game.Online.Spectator;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Mania;
+using osu.Game.Tests.Visual.Spectator;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneSpectatorHost : PlayerTestScene
+    {
+        protected override Ruleset CreatePlayerRuleset() => new ManiaRuleset();
+
+        [Cached(typeof(SpectatorClient))]
+        private TestSpectatorClient spectatorClient { get; } = new TestSpectatorClient();
+
+        private DummyAPIAccess dummyAPIAccess => (DummyAPIAccess)API;
+        private const int dummy_user_id = 42;
+
+        public override void SetUpSteps()
+        {
+            AddStep("set dummy user", () => dummyAPIAccess.LocalUser.Value = new User
+            {
+                Id = dummy_user_id,
+                Username = "DummyUser"
+            });
+            AddStep("add test spectator client", () => Add(spectatorClient));
+            AddStep("add watching user", () => spectatorClient.WatchUser(dummy_user_id));
+            base.SetUpSteps();
+        }
+
+        [Test]
+        public void TestClientSendsCorrectRuleset()
+        {
+            AddUntilStep("spectator client sending frames", () => spectatorClient.PlayingUserStates.ContainsKey(dummy_user_id));
+            AddAssert("spectator client sent correct ruleset", () => spectatorClient.PlayingUserStates[dummy_user_id].RulesetID == Ruleset.Value.ID);
+        }
+
+        public override void TearDownSteps()
+        {
+            base.TearDownSteps();
+            AddStep("stop watching user", () => spectatorClient.StopWatchingUser(dummy_user_id));
+            AddStep("remove test spectator client", () => Remove(spectatorClient));
+        }
+    }
+}

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

@@ -90,8 +90,12 @@ namespace osu.Game.Tests.Visual.Gameplay
             CreateTest(() =>
             {
                 AddStep("fail on first judgement", () => currentFailConditions = (_, __) => true);
-                AddStep("set storyboard duration to 1.3s", () => currentStoryboardDuration = 1300);
+
+                // Fail occurs at 164ms with the provided beatmap.
+                // Fail animation runs for 2.5s realtime but the gameplay time change is *variable* due to the frequency transform being applied, so we need a bit of lenience.
+                AddStep("set storyboard duration to 0.6s", () => currentStoryboardDuration = 600);
             });
+
             AddUntilStep("wait for fail", () => Player.HasFailed);
             AddUntilStep("storyboard ends", () => Player.GameplayClockContainer.GameplayClock.CurrentTime >= currentStoryboardDuration);
             AddUntilStep("wait for fail overlay", () => Player.FailOverlay.State.Value == Visibility.Visible);

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

@@ -0,0 +1,167 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Moq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.Rooms;
+using osu.Game.Overlays;
+using osu.Game.Screens.OnlinePlay.Lounge;
+using osuTK.Input;
+
+namespace osu.Game.Tests.Visual.Multiplayer
+{
+    public class TestSceneDrawableLoungeRoom : OsuManualInputManagerTestScene
+    {
+        private readonly Room room = new Room
+        {
+            HasPassword = { Value = true }
+        };
+
+        [Cached]
+        protected readonly OverlayColourProvider ColourProvider = new OverlayColourProvider(OverlayColourScheme.Pink);
+
+        private DrawableLoungeRoom drawableRoom;
+        private SearchTextBox searchTextBox;
+
+        private readonly ManualResetEventSlim allowResponseCallback = new ManualResetEventSlim();
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            var mockLounge = new Mock<LoungeSubScreen>();
+            mockLounge
+                .Setup(l => l.Join(It.IsAny<Room>(), It.IsAny<string>(), It.IsAny<Action<Room>>(), It.IsAny<Action<string>>()))
+                .Callback<Room, string, Action<Room>, Action<string>>((a, b, c, d) =>
+                {
+                    Task.Run(() =>
+                    {
+                        allowResponseCallback.Wait();
+                        allowResponseCallback.Reset();
+                        Schedule(() => d?.Invoke("Incorrect password"));
+                    });
+                });
+
+            Dependencies.CacheAs(mockLounge.Object);
+        }
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("create drawable", () =>
+            {
+                Child = new PopoverContainer
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Children = new Drawable[]
+                    {
+                        searchTextBox = new SearchTextBox
+                        {
+                            HoldFocus = true,
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
+                            Margin = new MarginPadding(50),
+                            Width = 500,
+                            Depth = float.MaxValue
+                        },
+                        drawableRoom = new DrawableLoungeRoom(room)
+                        {
+                            Anchor = Anchor.Centre,
+                            Origin = Anchor.Centre,
+                        }
+                    }
+                };
+            });
+        }
+
+        [Test]
+        public void TestFocusViaKeyboardCommit()
+        {
+            DrawableLoungeRoom.PasswordEntryPopover popover = null;
+
+            AddAssert("search textbox has focus", () => checkFocus(searchTextBox));
+            AddStep("click room twice", () =>
+            {
+                InputManager.MoveMouseTo(drawableRoom);
+                InputManager.Click(MouseButton.Left);
+                InputManager.Click(MouseButton.Left);
+            });
+            AddUntilStep("wait for popover", () => (popover = InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().SingleOrDefault()) != null);
+
+            AddAssert("textbox has focus", () => checkFocus(popover.ChildrenOfType<OsuPasswordTextBox>().Single()));
+
+            AddStep("enter password", () => popover.ChildrenOfType<OsuPasswordTextBox>().Single().Text = "password");
+            AddStep("commit via enter", () => InputManager.Key(Key.Enter));
+
+            AddAssert("popover has focus", () => checkFocus(popover));
+
+            AddStep("attempt another enter", () => InputManager.Key(Key.Enter));
+
+            AddAssert("popover still has focus", () => checkFocus(popover));
+
+            AddStep("unblock response", () => allowResponseCallback.Set());
+
+            AddUntilStep("wait for textbox refocus", () => checkFocus(popover.ChildrenOfType<OsuPasswordTextBox>().Single()));
+
+            AddStep("press escape", () => InputManager.Key(Key.Escape));
+            AddStep("press escape", () => InputManager.Key(Key.Escape));
+
+            AddUntilStep("search textbox has focus", () => checkFocus(searchTextBox));
+        }
+
+        [Test]
+        public void TestFocusViaMouseCommit()
+        {
+            DrawableLoungeRoom.PasswordEntryPopover popover = null;
+
+            AddAssert("search textbox has focus", () => checkFocus(searchTextBox));
+            AddStep("click room twice", () =>
+            {
+                InputManager.MoveMouseTo(drawableRoom);
+                InputManager.Click(MouseButton.Left);
+                InputManager.Click(MouseButton.Left);
+            });
+            AddUntilStep("wait for popover", () => (popover = InputManager.ChildrenOfType<DrawableLoungeRoom.PasswordEntryPopover>().SingleOrDefault()) != null);
+
+            AddAssert("textbox has focus", () => checkFocus(popover.ChildrenOfType<OsuPasswordTextBox>().Single()));
+
+            AddStep("enter password", () => popover.ChildrenOfType<OsuPasswordTextBox>().Single().Text = "password");
+
+            AddStep("commit via click button", () =>
+            {
+                var button = popover.ChildrenOfType<OsuButton>().Single();
+                InputManager.MoveMouseTo(button);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddAssert("popover has focus", () => checkFocus(popover));
+
+            AddStep("attempt another click", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("popover still has focus", () => checkFocus(popover));
+
+            AddStep("unblock response", () => allowResponseCallback.Set());
+
+            AddUntilStep("wait for textbox refocus", () => checkFocus(popover.ChildrenOfType<OsuPasswordTextBox>().Single()));
+
+            AddStep("click away", () =>
+            {
+                InputManager.MoveMouseTo(searchTextBox);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddUntilStep("search textbox has focus", () => checkFocus(searchTextBox));
+        }
+
+        private bool checkFocus(Drawable expected) =>
+            InputManager.FocusedDrawable == expected;
+    }
+}

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

@@ -92,6 +92,18 @@ namespace osu.Game.Tests.Visual.Multiplayer
             assertChatFocused(true);
         }
 
+        [Test]
+        public void TestFocusLostOnBackKey()
+        {
+            setLocalUserPlaying(true);
+
+            assertChatFocused(false);
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertChatFocused(true);
+            AddStep("press escape", () => InputManager.Key(Key.Escape));
+            assertChatFocused(false);
+        }
+
         [Test]
         public void TestFocusOnTabKeyWhenNotExpanded()
         {

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

@@ -5,6 +5,7 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
 using osu.Framework.Testing;
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets.Catch;
@@ -25,12 +26,18 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [SetUp]
         public new void Setup() => Schedule(() =>
         {
-            Child = container = new RoomsContainer
+            Child = new PopoverContainer
             {
+                RelativeSizeAxes = Axes.X,
+                AutoSizeAxes = Axes.Y,
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Width = 0.5f,
+
+                Child = container = new RoomsContainer
+                {
                     SelectedRoom = { BindTarget = SelectedRoom }
+                }
             };
         });
 

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

@@ -564,11 +564,18 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 }
             });
 
-            AddRepeatStep("click spectate button", () =>
+            AddUntilStep("wait for ready button to be enabled", () => readyButton.ChildrenOfType<OsuButton>().Single().Enabled.Value);
+
+            AddStep("click ready button", () =>
             {
-                InputManager.MoveMouseTo(this.ChildrenOfType<MultiplayerReadyButton>().Single());
+                InputManager.MoveMouseTo(readyButton);
                 InputManager.Click(MouseButton.Left);
-            }, 2);
+            });
+
+            AddUntilStep("wait for player to be ready", () => client.Room?.Users[0].State == MultiplayerUserState.Ready);
+            AddUntilStep("wait for ready button to be enabled", () => readyButton.ChildrenOfType<OsuButton>().Single().Enabled.Value);
+
+            AddStep("click start button", () => InputManager.Click(MouseButton.Left));
 
             AddUntilStep("wait for player", () => Stack.CurrentScreen is Player);
 
@@ -582,6 +589,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddUntilStep("wait for results", () => Stack.CurrentScreen is ResultsScreen);
         }
 
+        private MultiplayerReadyButton readyButton => this.ChildrenOfType<MultiplayerReadyButton>().Single();
+
         private void createRoom(Func<Room> room)
         {
             AddUntilStep("wait for lounge", () => multiplayerScreen.ChildrenOfType<LoungeSubScreen>().SingleOrDefault()?.IsLoaded == true);

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

@@ -275,6 +275,68 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 var state = i;
                 AddStep($"set state: {state}", () => Client.ChangeUserState(0, state));
             }
+
+            AddStep("set state: downloading", () => Client.ChangeUserBeatmapAvailability(0, BeatmapAvailability.Downloading(0)));
+
+            AddStep("set state: locally available", () => Client.ChangeUserBeatmapAvailability(0, BeatmapAvailability.LocallyAvailable()));
+        }
+
+        [Test]
+        public void TestModOverlap()
+        {
+            AddStep("add dummy mods", () =>
+            {
+                Client.ChangeUserMods(new Mod[]
+                {
+                    new OsuModNoFail(),
+                    new OsuModDoubleTime()
+                });
+            });
+
+            AddStep("add user with mods", () =>
+            {
+                Client.AddUser(new User
+                {
+                    Id = 0,
+                    Username = "Baka",
+                    RulesetsStatistics = new Dictionary<string, UserStatistics>
+                    {
+                        {
+                            Ruleset.Value.ShortName,
+                            new UserStatistics { GlobalRank = RNG.Next(1, 100000), }
+                        }
+                    },
+                    CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
+                });
+                Client.ChangeUserMods(0, new Mod[]
+                {
+                    new OsuModHardRock(),
+                    new OsuModDoubleTime()
+                });
+            });
+
+            AddStep("set 0 ready", () => Client.ChangeState(MultiplayerUserState.Ready));
+
+            AddStep("set 1 spectate", () => Client.ChangeUserState(0, MultiplayerUserState.Spectating));
+
+            // Have to set back to idle due to status priority.
+            AddStep("set 0 no map, 1 ready", () =>
+            {
+                Client.ChangeState(MultiplayerUserState.Idle);
+                Client.ChangeBeatmapAvailability(BeatmapAvailability.NotDownloaded());
+                Client.ChangeUserState(0, MultiplayerUserState.Ready);
+            });
+
+            AddStep("set 0 downloading", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.Downloading(0)));
+
+            AddStep("set 0 spectate", () => Client.ChangeUserState(0, MultiplayerUserState.Spectating));
+
+            AddStep("make both default", () =>
+            {
+                Client.ChangeBeatmapAvailability(BeatmapAvailability.LocallyAvailable());
+                Client.ChangeUserState(0, MultiplayerUserState.Idle);
+                Client.ChangeState(MultiplayerUserState.Idle);
+            });
         }
 
         private void createNewParticipantsList()

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

@@ -0,0 +1,31 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Overlays.Notifications;
+using osu.Game.Tests.Resources;
+
+namespace osu.Game.Tests.Visual.Navigation
+{
+    public class TestSceneStartupImport : OsuGameTestScene
+    {
+        private string importFilename;
+
+        protected override TestOsuGame CreateTestGame() => new TestOsuGame(LocalStorage, API, new[] { importFilename });
+
+        public override void SetUpSteps()
+        {
+            AddStep("Prepare import beatmap", () => importFilename = TestResources.GetTestBeatmapForImport());
+
+            base.SetUpSteps();
+        }
+
+        [Test]
+        public void TestImportCreatedNotification()
+        {
+            AddUntilStep("Import notification was presented", () => Game.Notifications.ChildrenOfType<ProgressCompletionNotification>().Count() == 1);
+        }
+    }
+}

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

@@ -3,6 +3,7 @@
 
 using NUnit.Framework;
 using osu.Game.Beatmaps;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapSet;
 
 namespace osu.Game.Tests.Visual.Online
@@ -22,7 +23,7 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set undownloadable beatmapset with link", () => container.BeatmapSet = new BeatmapSetInfo
             {
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Availability = new BeatmapSetOnlineAvailability
                     {
@@ -40,7 +41,7 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set undownloadable beatmapset without link", () => container.BeatmapSet = new BeatmapSetInfo
             {
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Availability = new BeatmapSetOnlineAvailability
                     {
@@ -57,7 +58,7 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set parts-removed beatmapset with link", () => container.BeatmapSet = new BeatmapSetInfo
             {
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Availability = new BeatmapSetOnlineAvailability
                     {
@@ -75,7 +76,7 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set normal beatmapset", () => container.BeatmapSet = new BeatmapSetInfo
             {
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Availability = new BeatmapSetOnlineAvailability
                     {

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

@@ -7,14 +7,12 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
-using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
-using osu.Game.Rulesets;
 using osu.Game.Scoring;
 using osu.Game.Users;
 using osuTK.Input;
@@ -92,7 +90,7 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddAssert("is visible", () => overlay.State.Value == Visibility.Visible);
 
-            AddStep("show many results", () => fetchFor(Enumerable.Repeat(CreateBeatmap(Ruleset.Value).BeatmapInfo.BeatmapSet, 100).ToArray()));
+            AddStep("show many results", () => fetchFor(Enumerable.Repeat(CreateAPIBeatmapSet(Ruleset.Value), 10).ToArray()));
 
             AddUntilStep("placeholder hidden", () => !overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().Any(d => d.IsPresent));
 
@@ -114,7 +112,7 @@ namespace osu.Game.Tests.Visual.Online
             AddStep("fetch for 0 beatmaps", () => fetchFor());
             AddUntilStep("placeholder shown", () => overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().SingleOrDefault()?.IsPresent == true);
 
-            AddStep("fetch for 1 beatmap", () => fetchFor(CreateBeatmap(Ruleset.Value).BeatmapInfo.BeatmapSet));
+            AddStep("fetch for 1 beatmap", () => fetchFor(CreateAPIBeatmapSet(Ruleset.Value)));
             AddUntilStep("placeholder hidden", () => !overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().Any(d => d.IsPresent));
 
             AddStep("fetch for 0 beatmaps", () => fetchFor());
@@ -188,7 +186,7 @@ namespace osu.Game.Tests.Visual.Online
         [Test]
         public void TestUserWithoutSupporterUsesSupporterOnlyFiltersWithResults()
         {
-            AddStep("fetch for 1 beatmap", () => fetchFor(CreateBeatmap(Ruleset.Value).BeatmapInfo.BeatmapSet));
+            AddStep("fetch for 1 beatmap", () => fetchFor(CreateAPIBeatmapSet(Ruleset.Value)));
             AddStep("set dummy as non-supporter", () => ((DummyAPIAccess)API).LocalUser.Value.IsSupporter = false);
 
             // only Rank Achieved filter
@@ -218,7 +216,7 @@ namespace osu.Game.Tests.Visual.Online
         [Test]
         public void TestUserWithSupporterUsesSupporterOnlyFiltersWithResults()
         {
-            AddStep("fetch for 1 beatmap", () => fetchFor(CreateBeatmap(Ruleset.Value).BeatmapInfo.BeatmapSet));
+            AddStep("fetch for 1 beatmap", () => fetchFor(CreateAPIBeatmapSet(Ruleset.Value)));
             AddStep("set dummy as supporter", () => ((DummyAPIAccess)API).LocalUser.Value.IsSupporter = true);
 
             // only Rank Achieved filter
@@ -247,10 +245,10 @@ namespace osu.Game.Tests.Visual.Online
 
         private static int searchCount;
 
-        private void fetchFor(params BeatmapSetInfo[] beatmaps)
+        private void fetchFor(params APIBeatmapSet[] beatmaps)
         {
             setsForResponse.Clear();
-            setsForResponse.AddRange(beatmaps.Select(b => new TestAPIBeatmapSet(b)));
+            setsForResponse.AddRange(beatmaps);
 
             // trigger arbitrary change for fetching.
             searchControl.Query.Value = $"search {searchCount++}";
@@ -286,17 +284,5 @@ namespace osu.Game.Tests.Visual.Online
                 !overlay.ChildrenOfType<BeatmapListingOverlay.SupporterRequiredDrawable>().Any(d => d.IsPresent)
                 && !overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().Any(d => d.IsPresent));
         }
-
-        private class TestAPIBeatmapSet : APIBeatmapSet
-        {
-            private readonly BeatmapSetInfo beatmapSet;
-
-            public TestAPIBeatmapSet(BeatmapSetInfo beatmapSet)
-            {
-                this.beatmapSet = beatmapSet;
-            }
-
-            public override BeatmapSetInfo ToBeatmapSet(RulesetStore rulesets) => beatmapSet;
-        }
     }
 }

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

@@ -11,6 +11,7 @@ using osu.Game.Users;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Game.Online.API.Requests.Responses;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -63,7 +64,7 @@ namespace osu.Game.Tests.Visual.Online
                             Id = 3,
                         },
                     },
-                    OnlineInfo = new BeatmapSetOnlineInfo
+                    OnlineInfo = new APIBeatmapSet
                     {
                         Preview = @"https://b.ppy.sh/preview/12345.mp3",
                         PlayCount = 123,
@@ -72,10 +73,10 @@ namespace osu.Game.Tests.Visual.Online
                         Ranked = DateTime.Now,
                         BPM = 111,
                         HasVideo = true,
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
                         HasStoryboard = true,
                         Covers = new BeatmapSetOnlineCovers(),
                     },
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() },
                     Beatmaps = new List<BeatmapInfo>
                     {
                         new BeatmapInfo
@@ -91,20 +92,20 @@ namespace osu.Game.Tests.Visual.Online
                                 OverallDifficulty = 4.5f,
                                 ApproachRate = 6,
                             },
-                            OnlineInfo = new BeatmapOnlineInfo
+                            OnlineInfo = new APIBeatmap
                             {
                                 CircleCount = 111,
                                 SliderCount = 12,
                                 PlayCount = 222,
                                 PassCount = 21,
-                            },
+                                FailTimes = new APIFailTimes
-                            Metrics = new BeatmapMetrics
                                 {
                                     Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                                     Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                                 },
                             },
                         },
+                    },
                 });
             });
 
@@ -134,7 +135,7 @@ namespace osu.Game.Tests.Visual.Online
                             Id = 3,
                         },
                     },
-                    OnlineInfo = new BeatmapSetOnlineInfo
+                    OnlineInfo = new APIBeatmapSet
                     {
                         Availability = new BeatmapSetOnlineAvailability
                         {
@@ -152,8 +153,8 @@ namespace osu.Game.Tests.Visual.Online
                         Covers = new BeatmapSetOnlineCovers(),
                         Language = new BeatmapSetOnlineLanguage { Id = 3, Name = "English" },
                         Genre = new BeatmapSetOnlineGenre { Id = 4, Name = "Rock" },
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
                     },
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() },
                     Beatmaps = new List<BeatmapInfo>
                     {
                         new BeatmapInfo
@@ -169,20 +170,20 @@ namespace osu.Game.Tests.Visual.Online
                                 OverallDifficulty = 7,
                                 ApproachRate = 6,
                             },
-                            OnlineInfo = new BeatmapOnlineInfo
+                            OnlineInfo = new APIBeatmap
                             {
                                 CircleCount = 123,
                                 SliderCount = 45,
                                 PlayCount = 567,
                                 PassCount = 89,
-                            },
+                                FailTimes = new APIFailTimes
-                            Metrics = new BeatmapMetrics
                                 {
                                     Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                                     Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                                 },
                             },
                         },
+                    },
                 });
             });
 
@@ -203,12 +204,14 @@ namespace osu.Game.Tests.Visual.Online
                         Version = ruleset.Name,
                         Ruleset = ruleset,
                         BaseDifficulty = new BeatmapDifficulty(),
-                        OnlineInfo = new BeatmapOnlineInfo(),
+                        OnlineInfo = new APIBeatmap
-                        Metrics = new BeatmapMetrics
+                        {
+                            FailTimes = new APIFailTimes
                             {
                                 Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                                 Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                             },
+                        }
                     });
                 }
 
@@ -224,11 +227,11 @@ namespace osu.Game.Tests.Visual.Online
                             Id = 3,
                         }
                     },
-                    OnlineInfo = new BeatmapSetOnlineInfo
+                    OnlineInfo = new APIBeatmapSet
                     {
                         Covers = new BeatmapSetOnlineCovers(),
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
                     },
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() },
                     Beatmaps = beatmaps
                 });
             });
@@ -287,12 +290,14 @@ namespace osu.Game.Tests.Visual.Online
                     {
                         OverallDifficulty = 3.5f,
                     },
-                    OnlineInfo = new BeatmapOnlineInfo(),
+                    OnlineInfo = new APIBeatmap
-                    Metrics = new BeatmapMetrics
+                    {
+                        FailTimes = new APIFailTimes
                         {
                             Fails = Enumerable.Range(1, 100).Select(j => j % 12 - 6).ToArray(),
                             Retries = Enumerable.Range(-2, 100).Select(j => j % 12 - 6).ToArray(),
                         },
+                    }
                 });
             }
 
@@ -309,14 +314,14 @@ namespace osu.Game.Tests.Visual.Online
                         Id = 3,
                     },
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Preview = @"https://b.ppy.sh/preview/123.mp3",
                     HasVideo = true,
                     HasStoryboard = true,
                     Covers = new BeatmapSetOnlineCovers(),
+                    Ratings = Enumerable.Range(0, 11).ToArray(),
                 },
-                Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() },
                 Beatmaps = beatmaps,
             };
         }

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

@@ -8,6 +8,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Screens.Select.Details;
@@ -38,27 +39,30 @@ namespace osu.Game.Tests.Visual.Online
             var secondSet = createSet();
 
             AddStep("set first set", () => details.BeatmapSet = firstSet);
-            AddAssert("ratings set", () => details.Ratings.Metrics == firstSet.Metrics);
+            AddAssert("ratings set", () => details.Ratings.Ratings == firstSet.Ratings);
 
             AddStep("set second set", () => details.BeatmapSet = secondSet);
-            AddAssert("ratings set", () => details.Ratings.Metrics == secondSet.Metrics);
+            AddAssert("ratings set", () => details.Ratings.Ratings == secondSet.Ratings);
 
             static BeatmapSetInfo createSet() => new BeatmapSetInfo
             {
-                Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).Select(_ => RNG.Next(10)).ToArray() },
                 Beatmaps = new List<BeatmapInfo>
                 {
                     new BeatmapInfo
                     {
-                        Metrics = new BeatmapMetrics
+                        OnlineInfo = new APIBeatmap
+                        {
+                            FailTimes = new APIFailTimes
                             {
                                 Fails = Enumerable.Range(1, 100).Select(_ => RNG.Next(10)).ToArray(),
                                 Retries = Enumerable.Range(-2, 100).Select(_ => RNG.Next(10)).ToArray(),
                             },
                         }
+                    }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
+                    Ratings = Enumerable.Range(0, 11).Select(_ => RNG.Next(10)).ToArray(),
                     Status = BeatmapSetOnlineStatus.Ranked
                 }
             };

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

@@ -11,6 +11,7 @@ using osu.Framework.Testing;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Screens.Select.Details;
@@ -59,18 +60,21 @@ namespace osu.Game.Tests.Visual.Online
             var secondBeatmap = createBeatmap();
 
             AddStep("set first set", () => successRate.BeatmapInfo = firstBeatmap);
-            AddAssert("ratings set", () => successRate.Graph.Metrics == firstBeatmap.Metrics);
+            AddAssert("ratings set", () => successRate.Graph.FailTimes == firstBeatmap.FailTimes);
 
             AddStep("set second set", () => successRate.BeatmapInfo = secondBeatmap);
-            AddAssert("ratings set", () => successRate.Graph.Metrics == secondBeatmap.Metrics);
+            AddAssert("ratings set", () => successRate.Graph.FailTimes == secondBeatmap.FailTimes);
 
             static BeatmapInfo createBeatmap() => new BeatmapInfo
             {
-                Metrics = new BeatmapMetrics
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes
                     {
                         Fails = Enumerable.Range(1, 100).Select(_ => RNG.Next(10)).ToArray(),
                         Retries = Enumerable.Range(-2, 100).Select(_ => RNG.Next(10)).ToArray(),
                     }
+                }
             };
         }
 
@@ -79,13 +83,16 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set beatmap", () => successRate.BeatmapInfo = new BeatmapInfo
             {
-                Metrics = new BeatmapMetrics
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes
                     {
                         Fails = Enumerable.Range(1, 100).ToArray(),
                     }
+                }
             });
-            AddAssert("graph max values correct",
+
-                () => successRate.ChildrenOfType<BarGraph>().All(graph => graph.MaxValue == 100));
+            AddAssert("graph max values correct", () => successRate.ChildrenOfType<BarGraph>().All(graph => graph.MaxValue == 100));
         }
 
         [Test]
@@ -93,11 +100,13 @@ namespace osu.Game.Tests.Visual.Online
         {
             AddStep("set beatmap", () => successRate.BeatmapInfo = new BeatmapInfo
             {
-                Metrics = new BeatmapMetrics()
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes(),
+                }
             });
 
-            AddAssert("graph max values correct",
+            AddAssert("graph max values correct", () => successRate.ChildrenOfType<BarGraph>().All(graph => graph.MaxValue == 0));
-                () => successRate.ChildrenOfType<BarGraph>().All(graph => graph.MaxValue == 0));
         }
 
         private class GraphExposingSuccessRate : SuccessRate

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

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -105,7 +106,7 @@ namespace osu.Game.Tests.Visual.Online
                             }
                             else
                             {
-                                getUser.TriggerFailure(new Exception());
+                                getUser.TriggerFailure(new WebException());
                             }
 
                             return true;

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

@@ -7,6 +7,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Online;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapListing.Panels;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Tests.Resources;
@@ -74,7 +75,7 @@ namespace osu.Game.Tests.Visual.Online
             {
                 ID = 1,
                 OnlineBeatmapSetID = 241526,
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Availability = new BeatmapSetOnlineAvailability
                     {

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

@@ -7,6 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapListing.Panels;
 using osu.Game.Rulesets;
 using osu.Game.Users;
@@ -31,7 +32,7 @@ namespace osu.Game.Tests.Visual.Online
                     Id = 3,
                 },
             },
-            OnlineInfo = new BeatmapSetOnlineInfo
+            OnlineInfo = new APIBeatmapSet
             {
                 Availability = new BeatmapSetOnlineAvailability
                 {
@@ -86,7 +87,7 @@ namespace osu.Game.Tests.Visual.Online
                         Id = 3,
                     }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     HasVideo = true,
                     HasStoryboard = true,

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

@@ -3,11 +3,7 @@
 
 using System;
 using NUnit.Framework;
-using osu.Framework.Allocation;
-using osu.Framework.Bindables;
 using osu.Framework.Graphics;
-using osu.Game.Online.API;
-using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Users;
 
@@ -16,48 +12,50 @@ namespace osu.Game.Tests.Visual.Online
     [TestFixture]
     public class TestSceneUserProfilePreviousUsernames : OsuTestScene
     {
-        [Resolved]
+        private PreviousUsernames container;
-        private IAPIProvider api { get; set; }
 
-        private readonly Bindable<User> user = new Bindable<User>();
+        [SetUp]
-
+        public void SetUp() => Schedule(() =>
-        public TestSceneUserProfilePreviousUsernames()
         {
-            Child = new PreviousUsernames
+            Child = container = new PreviousUsernames
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-                User = { BindTarget = user },
             };
+        });
 
-            User[] users =
+        [Test]
+        public void TestVisibility()
         {
-                new User { PreviousUsernames = new[] { "username1" } },
+            AddAssert("Is Hidden", () => container.Alpha == 0);
-                new User { PreviousUsernames = new[] { "longusername", "longerusername" } },
+
-                new User { PreviousUsernames = new[] { "test", "angelsim", "verylongusername" } },
+            AddStep("1 username", () => container.User.Value = users[0]);
-                new User { PreviousUsernames = new[] { "ihavenoidea", "howcani", "makethistext", "anylonger" } },
+            AddUntilStep("Is visible", () => container.Alpha == 1);
-                new User { PreviousUsernames = Array.Empty<string>() },
+
+            AddStep("2 usernames", () => container.User.Value = users[1]);
+            AddUntilStep("Is visible", () => container.Alpha == 1);
+
+            AddStep("3 usernames", () => container.User.Value = users[2]);
+            AddUntilStep("Is visible", () => container.Alpha == 1);
+
+            AddStep("4 usernames", () => container.User.Value = users[3]);
+            AddUntilStep("Is visible", () => container.Alpha == 1);
+
+            AddStep("No username", () => container.User.Value = users[4]);
+            AddUntilStep("Is hidden", () => container.Alpha == 0);
+
+            AddStep("Null user", () => container.User.Value = users[5]);
+            AddUntilStep("Is hidden", () => container.Alpha == 0);
+        }
+
+        private static readonly User[] users =
+        {
+            new User { Id = 1, PreviousUsernames = new[] { "username1" } },
+            new User { Id = 2, PreviousUsernames = new[] { "longusername", "longerusername" } },
+            new User { Id = 3, PreviousUsernames = new[] { "test", "angelsim", "verylongusername" } },
+            new User { Id = 4, PreviousUsernames = new[] { "ihavenoidea", "howcani", "makethistext", "anylonger" } },
+            new User { Id = 5, PreviousUsernames = Array.Empty<string>() },
             null
         };
-
-            AddStep("single username", () => user.Value = users[0]);
-            AddStep("two usernames", () => user.Value = users[1]);
-            AddStep("three usernames", () => user.Value = users[2]);
-            AddStep("four usernames", () => user.Value = users[3]);
-            AddStep("no username", () => user.Value = users[4]);
-            AddStep("null user", () => user.Value = users[5]);
-        }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            AddStep("online user (Angelsim)", () =>
-            {
-                var request = new GetUserRequest(1777162);
-                request.Success += user => this.user.Value = user;
-                api.Queue(request);
-            });
-        }
     }
 }

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

@@ -32,12 +32,14 @@ namespace osu.Game.Tests.Visual.Playlists
         private TestResultsScreen resultsScreen;
         private int currentScoreId;
         private bool requestComplete;
+        private int totalCount;
 
         [SetUp]
         public void Setup() => Schedule(() =>
         {
             currentScoreId = 0;
             requestComplete = false;
+            totalCount = 0;
             bindHandler();
         });
 
@@ -53,7 +55,6 @@ namespace osu.Game.Tests.Visual.Playlists
             });
 
             createResults(() => userScore);
-            waitForDisplay();
 
             AddAssert("user score selected", () => this.ChildrenOfType<ScorePanel>().Single(p => p.Score.OnlineScoreID == userScore.OnlineScoreID).State == PanelState.Expanded);
         }
@@ -62,7 +63,6 @@ namespace osu.Game.Tests.Visual.Playlists
         public void TestShowNullUserScore()
         {
             createResults();
-            waitForDisplay();
 
             AddAssert("top score selected", () => this.ChildrenOfType<ScorePanel>().OrderByDescending(p => p.Score.TotalScore).First().State == PanelState.Expanded);
         }
@@ -79,7 +79,6 @@ namespace osu.Game.Tests.Visual.Playlists
             });
 
             createResults(() => userScore);
-            waitForDisplay();
 
             AddAssert("more than 1 panel displayed", () => this.ChildrenOfType<ScorePanel>().Count() > 1);
             AddAssert("user score selected", () => this.ChildrenOfType<ScorePanel>().Single(p => p.Score.OnlineScoreID == userScore.OnlineScoreID).State == PanelState.Expanded);
@@ -91,7 +90,6 @@ namespace osu.Game.Tests.Visual.Playlists
             AddStep("bind delayed handler", () => bindHandler(true));
 
             createResults();
-            waitForDisplay();
 
             AddAssert("top score selected", () => this.ChildrenOfType<ScorePanel>().OrderByDescending(p => p.Score.TotalScore).First().State == PanelState.Expanded);
         }
@@ -100,7 +98,6 @@ namespace osu.Game.Tests.Visual.Playlists
         public void TestFetchWhenScrolledToTheRight()
         {
             createResults();
-            waitForDisplay();
 
             AddStep("bind delayed handler", () => bindHandler(true));
 
@@ -131,7 +128,6 @@ namespace osu.Game.Tests.Visual.Playlists
             });
 
             createResults(() => userScore);
-            waitForDisplay();
 
             AddStep("bind delayed handler", () => bindHandler(true));
 
@@ -161,13 +157,15 @@ namespace osu.Game.Tests.Visual.Playlists
                 }));
             });
 
-            AddUntilStep("wait for load", () => resultsScreen.ChildrenOfType<ScorePanelList>().FirstOrDefault()?.AllPanelsVisible == true);
+            waitForDisplay();
         }
 
         private void waitForDisplay()
         {
-            AddUntilStep("wait for request to complete", () => requestComplete);
+            AddUntilStep("wait for load to complete", () =>
-            AddUntilStep("wait for panels to be visible", () => resultsScreen.ChildrenOfType<ScorePanelList>().FirstOrDefault()?.AllPanelsVisible == true);
+                requestComplete
+                && resultsScreen.ScorePanelList.GetScorePanels().Count() == totalCount
+                && resultsScreen.ScorePanelList.AllPanelsVisible);
             AddWaitStep("wait for display", 5);
         }
 
@@ -203,6 +201,7 @@ namespace osu.Game.Tests.Visual.Playlists
                             triggerFail(s);
                         else
                             triggerSuccess(s, createUserResponse(userScore));
+
                         break;
 
                     case IndexPlaylistScoresRequest i:
@@ -248,6 +247,8 @@ namespace osu.Game.Tests.Visual.Playlists
                 }
             };
 
+            totalCount++;
+
             for (int i = 1; i <= scores_per_result; i++)
             {
                 multiplayerUserScore.ScoresAround.Lower.Scores.Add(new MultiplayerScore
@@ -285,6 +286,8 @@ namespace osu.Game.Tests.Visual.Playlists
                     },
                     Statistics = userScore.Statistics
                 });
+
+                totalCount += 2;
             }
 
             addCursor(multiplayerUserScore.ScoresAround.Lower);
@@ -325,6 +328,8 @@ namespace osu.Game.Tests.Visual.Playlists
                         { HitResult.Great, 300 }
                     }
                 });
+
+                totalCount++;
             }
 
             addCursor(result);

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

@@ -0,0 +1,63 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Game.Overlays;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.Settings
+{
+    public class TestSceneRestoreDefaultValueButton : OsuTestScene
+    {
+        [Resolved]
+        private OsuColour colours { get; set; }
+
+        private float scale = 1;
+
+        private readonly Bindable<float> current = new Bindable<float>
+        {
+            Default = default,
+            Value = 1,
+        };
+
+        [Test]
+        public void TestBasic()
+        {
+            RestoreDefaultValueButton<float> restoreDefaultValueButton = null;
+
+            AddStep("create button", () => Child = new Container
+            {
+                RelativeSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = colours.GreySeafoam
+                    },
+                    restoreDefaultValueButton = new RestoreDefaultValueButton<float>
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Scale = new Vector2(scale),
+                        Current = current,
+                    }
+                }
+            });
+            AddSliderStep("set scale", 1, 4, 1, scale =>
+            {
+                this.scale = scale;
+                if (restoreDefaultValueButton != null)
+                    restoreDefaultValueButton.Scale = new Vector2(scale);
+            });
+            AddToggleStep("toggle default state", state => current.Value = state ? default : 1);
+            AddToggleStep("toggle disabled state", state => current.Disabled = state);
+        }
+    }
+}

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

@@ -5,6 +5,9 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Testing;
+using osu.Framework.Utils;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays;
 
@@ -29,9 +32,10 @@ namespace osu.Game.Tests.Visual.Settings
                         Value = "test"
                     }
                 };
-
-                restoreDefaultValueButton = textBox.ChildrenOfType<RestoreDefaultValueButton<string>>().Single();
             });
+            AddUntilStep("wait for loaded", () => textBox.IsLoaded);
+            AddStep("retrieve restore default button", () => restoreDefaultValueButton = textBox.ChildrenOfType<RestoreDefaultValueButton<string>>().Single());
+
             AddAssert("restore button hidden", () => restoreDefaultValueButton.Alpha == 0);
 
             AddStep("change value from default", () => textBox.Current.Value = "non-default");
@@ -41,6 +45,48 @@ namespace osu.Game.Tests.Visual.Settings
             AddUntilStep("restore button hidden", () => restoreDefaultValueButton.Alpha == 0);
         }
 
+        [Test]
+        public void TestSetAndClearLabelText()
+        {
+            SettingsTextBox textBox = null;
+            RestoreDefaultValueButton<string> restoreDefaultValueButton = null;
+            OsuTextBox control = null;
+
+            AddStep("create settings item", () =>
+            {
+                Child = textBox = new SettingsTextBox
+                {
+                    Current = new Bindable<string>
+                    {
+                        Default = "test",
+                        Value = "test"
+                    }
+                };
+            });
+            AddUntilStep("wait for loaded", () => textBox.IsLoaded);
+            AddStep("retrieve components", () =>
+            {
+                restoreDefaultValueButton = textBox.ChildrenOfType<RestoreDefaultValueButton<string>>().Single();
+                control = textBox.ChildrenOfType<OsuTextBox>().Single();
+            });
+
+            AddStep("set non-default value", () => restoreDefaultValueButton.Current.Value = "non-default");
+            AddAssert("default value button centre aligned to control size", () => Precision.AlmostEquals(restoreDefaultValueButton.Parent.DrawHeight, control.DrawHeight, 1));
+
+            AddStep("set label", () => textBox.LabelText = "label text");
+            AddAssert("default value button centre aligned to label size", () =>
+            {
+                var label = textBox.ChildrenOfType<OsuSpriteText>().Single(spriteText => spriteText.Text == "label text");
+                return Precision.AlmostEquals(restoreDefaultValueButton.Parent.DrawHeight, label.DrawHeight, 1);
+            });
+
+            AddStep("clear label", () => textBox.LabelText = default);
+            AddAssert("default value button centre aligned to control size", () => Precision.AlmostEquals(restoreDefaultValueButton.Parent.DrawHeight, control.DrawHeight, 1));
+
+            AddStep("set warning text", () => textBox.WarningText = "This is some very important warning text! Hopefully it doesn't break the alignment of the default value indicator...");
+            AddAssert("default value button centre aligned to control size", () => Precision.AlmostEquals(restoreDefaultValueButton.Parent.DrawHeight, control.DrawHeight, 1));
+        }
+
         /// <summary>
         /// Ensures that the reset to default button uses the correct implementation of IsDefault to determine whether it should be shown or not.
         /// Values have been chosen so that after being set, Value != Default (but they are close enough that the difference is negligible compared to Precision).
@@ -64,9 +110,9 @@ namespace osu.Game.Tests.Visual.Settings
                         Precision = 0.1f,
                     }
                 };
-
-                restoreDefaultValueButton = sliderBar.ChildrenOfType<RestoreDefaultValueButton<float>>().Single();
             });
+            AddUntilStep("wait for loaded", () => sliderBar.IsLoaded);
+            AddStep("retrieve restore default button", () => restoreDefaultValueButton = sliderBar.ChildrenOfType<RestoreDefaultValueButton<float>>().Single());
 
             AddAssert("restore button hidden", () => restoreDefaultValueButton.Alpha == 0);
 

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

@@ -3,6 +3,7 @@
 
 using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Handlers.Tablet;
@@ -21,6 +22,9 @@ namespace osu.Game.Tests.Visual.Settings
         private TestTabletHandler tabletHandler;
         private TabletSettings settings;
 
+        [Cached]
+        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Purple);
+
         [SetUpSteps]
         public void SetUpSteps()
         {

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

@@ -6,6 +6,7 @@ using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Online.API;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.Select;
 
 namespace osu.Game.Tests.Visual.SongSelect
@@ -34,7 +35,10 @@ namespace osu.Game.Tests.Visual.SongSelect
             {
                 BeatmapSet = new BeatmapSetInfo
                 {
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() }
+                    OnlineInfo = new APIBeatmapSet
+                    {
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
+                    }
                 },
                 Version = "All Metrics",
                 Metadata = new BeatmapMetadata
@@ -50,11 +54,14 @@ namespace osu.Game.Tests.Visual.SongSelect
                     ApproachRate = 3.5f,
                 },
                 StarDifficulty = 5.3f,
-                Metrics = new BeatmapMetrics
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes
                     {
                         Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                         Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                     },
+                }
             });
         }
 
@@ -65,7 +72,10 @@ namespace osu.Game.Tests.Visual.SongSelect
             {
                 BeatmapSet = new BeatmapSetInfo
                 {
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() }
+                    OnlineInfo = new APIBeatmapSet
+                    {
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
+                    }
                 },
                 Version = "All Metrics",
                 Metadata = new BeatmapMetadata
@@ -80,11 +90,14 @@ namespace osu.Game.Tests.Visual.SongSelect
                     ApproachRate = 3.5f,
                 },
                 StarDifficulty = 5.3f,
-                Metrics = new BeatmapMetrics
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes
                     {
                         Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                         Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                     },
+                }
             });
         }
 
@@ -95,7 +108,10 @@ namespace osu.Game.Tests.Visual.SongSelect
             {
                 BeatmapSet = new BeatmapSetInfo
                 {
-                    Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() }
+                    OnlineInfo = new APIBeatmapSet
+                    {
+                        Ratings = Enumerable.Range(0, 11).ToArray(),
+                    }
                 },
                 Version = "Only Ratings",
                 Metadata = new BeatmapMetadata
@@ -133,11 +149,14 @@ namespace osu.Game.Tests.Visual.SongSelect
                     ApproachRate = 7,
                 },
                 StarDifficulty = 2.91f,
-                Metrics = new BeatmapMetrics
+                OnlineInfo = new APIBeatmap
+                {
+                    FailTimes = new APIFailTimes
                     {
                         Fails = Enumerable.Range(1, 100).Select(i => i % 12 - 6).ToArray(),
                         Retries = Enumerable.Range(-2, 100).Select(i => i % 12 - 6).ToArray(),
                     },
+                }
             });
         }
 

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

@@ -205,7 +205,7 @@ namespace osu.Game.Tests.Visual.SongSelect
         private void assertCollectionDropdownContains(string collectionName, bool shouldContain = true) =>
             AddAssert($"collection dropdown {(shouldContain ? "contains" : "does not contain")} '{collectionName}'",
                 // A bit of a roundabout way of going about this, see: https://github.com/ppy/osu-framework/issues/3871 + https://github.com/ppy/osu-framework/issues/3872
-                () => shouldContain == (getCollectionDropdownItems().Any(i => i.ChildrenOfType<FillFlowContainer>().OfType<IHasText>().First().Text == collectionName)));
+                () => shouldContain == (getCollectionDropdownItems().Any(i => i.ChildrenOfType<CompositeDrawable>().OfType<IHasText>().First().Text == collectionName)));
 
         private IconButton getAddOrRemoveButton(int index)
             => getCollectionDropdownItems().ElementAt(index).ChildrenOfType<IconButton>().Single();

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

@@ -142,6 +142,8 @@ namespace osu.Game.Tests.Visual.SongSelect
 
             AddStep("store selected beatmap", () => selected = Beatmap.Value);
 
+            AddUntilStep("wait for beatmaps to load", () => songSelect.Carousel.ChildrenOfType<DrawableCarouselBeatmap>().Any());
+
             AddStep("select next and enter", () =>
             {
                 InputManager.MoveMouseTo(songSelect.Carousel.ChildrenOfType<DrawableCarouselBeatmap>()
@@ -599,10 +601,10 @@ namespace osu.Game.Tests.Visual.SongSelect
             });
 
             FilterableDifficultyIcon difficultyIcon = null;
-            AddStep("Find an icon", () =>
+            AddUntilStep("Find an icon", () =>
             {
-                difficultyIcon = set.ChildrenOfType<FilterableDifficultyIcon>()
+                return (difficultyIcon = set.ChildrenOfType<FilterableDifficultyIcon>()
-                                    .First(icon => getDifficultyIconIndex(set, icon) != getCurrentBeatmapIndex());
+                                            .FirstOrDefault(icon => getDifficultyIconIndex(set, icon) != getCurrentBeatmapIndex())) != null;
             });
 
             AddStep("Click on a difficulty", () =>
@@ -765,10 +767,10 @@ namespace osu.Game.Tests.Visual.SongSelect
             });
 
             FilterableGroupedDifficultyIcon groupIcon = null;
-            AddStep("Find group icon for different ruleset", () =>
+            AddUntilStep("Find group icon for different ruleset", () =>
             {
-                groupIcon = set.ChildrenOfType<FilterableGroupedDifficultyIcon>()
+                return (groupIcon = set.ChildrenOfType<FilterableGroupedDifficultyIcon>()
-                               .First(icon => icon.Items.First().BeatmapInfo.Ruleset.ID == 3);
+                                       .FirstOrDefault(icon => icon.Items.First().BeatmapInfo.Ruleset.ID == 3)) != null;
             });
 
             AddAssert("Check ruleset is osu!", () => Ruleset.Value.ID == 0);

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

@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Sprites;
+using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
 using osuTK;
@@ -111,7 +112,7 @@ namespace osu.Game.Tests.Visual.UserInterface
 
         private static readonly BeatmapSetInfo beatmap_set = new BeatmapSetInfo
         {
-            OnlineInfo = new BeatmapSetOnlineInfo
+            OnlineInfo = new APIBeatmapSet
             {
                 Covers = new BeatmapSetOnlineCovers
                 {
@@ -122,7 +123,7 @@ namespace osu.Game.Tests.Visual.UserInterface
 
         private static readonly BeatmapSetInfo no_cover_beatmap_set = new BeatmapSetInfo
         {
-            OnlineInfo = new BeatmapSetOnlineInfo
+            OnlineInfo = new APIBeatmapSet
             {
                 Covers = new BeatmapSetOnlineCovers
                 {

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

@@ -11,6 +11,7 @@ using osu.Game.Users;
 using System;
 using osu.Framework.Graphics.Shapes;
 using System.Collections.Generic;
+using osu.Game.Online.API.Requests.Responses;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -69,7 +70,7 @@ namespace osu.Game.Tests.Visual.UserInterface
                         Id = 100
                     }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Covers = new BeatmapSetOnlineCovers
                     {
@@ -90,7 +91,7 @@ namespace osu.Game.Tests.Visual.UserInterface
                         Id = 100
                     }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Covers = new BeatmapSetOnlineCovers
                     {
@@ -115,7 +116,7 @@ namespace osu.Game.Tests.Visual.UserInterface
                         Id = 100
                     }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Covers = new BeatmapSetOnlineCovers
                     {
@@ -136,7 +137,7 @@ namespace osu.Game.Tests.Visual.UserInterface
                         Id = 100
                     }
                 },
-                OnlineInfo = new BeatmapSetOnlineInfo
+                OnlineInfo = new APIBeatmapSet
                 {
                     Covers = new BeatmapSetOnlineCovers
                     {