Merge branch 'master' into storyboard-skin-sprites

.idea/.idea.osu.Desktop/.idea/modules.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/.idea.osu.Desktop/riderModule.iml" filepath="$PROJECT_DIR$/.idea/.idea.osu.Desktop/riderModule.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/.idea.osu.Desktop/.idea/riderModule.iml" filepath="$PROJECT_DIR$/.idea/.idea.osu.Desktop/.idea/riderModule.iml" />
     </modules>
   </component>
 </project>

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.904.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.1016.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1009.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1019.0" />
   </ItemGroup>
 </Project>

osu.Android/GameplayScreenRotationLocker.cs

@@ -0,0 +1,34 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Android.Content.PM;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Game;
+
+namespace osu.Android
+{
+    public class GameplayScreenRotationLocker : Component
+    {
+        private Bindable<bool> localUserPlaying;
+
+        [Resolved]
+        private OsuGameActivity gameActivity { get; set; }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGame game)
+        {
+            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying.BindValueChanged(updateLock, true);
+        }
+
+        private void updateLock(ValueChangedEvent<bool> userPlaying)
+        {
+            gameActivity.RunOnUiThread(() =>
+            {
+                gameActivity.RequestedOrientation = userPlaying.NewValue ? ScreenOrientation.Locked : ScreenOrientation.FullUser;
+            });
+        }
+    }
+}

osu.Android/OsuGameActivity.cs

@@ -12,7 +12,7 @@ namespace osu.Android
     [Activity(Theme = "@android:style/Theme.NoTitleBar", MainLauncher = true, ScreenOrientation = ScreenOrientation.FullUser, SupportsPictureInPicture = false, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize, HardwareAccelerated = false)]
     public class OsuGameActivity : AndroidGameActivity
     {
-        protected override Framework.Game CreateGame() => new OsuGameAndroid();
+        protected override Framework.Game CreateGame() => new OsuGameAndroid(this);
 
         protected override void OnCreate(Bundle savedInstanceState)
         {

osu.Android/OsuGameAndroid.cs

@@ -4,6 +4,7 @@
 using System;
 using Android.App;
 using Android.OS;
+using osu.Framework.Allocation;
 using osu.Game;
 using osu.Game.Updater;
 
@@ -11,6 +12,15 @@ namespace osu.Android
 {
     public class OsuGameAndroid : OsuGame
     {
+        [Cached]
+        private readonly OsuGameActivity gameActivity;
+
+        public OsuGameAndroid(OsuGameActivity activity)
+            : base(null)
+        {
+            gameActivity = activity;
+        }
+
         public override Version AssemblyVersion
         {
             get
@@ -55,6 +65,12 @@ namespace osu.Android
             }
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            LoadComponentAsync(new GameplayScreenRotationLocker(), Add);
+        }
+
         protected override UpdateManager CreateUpdateManager() => new SimpleUpdateManager();
     }
 }

osu.Android/osu.Android.csproj

@@ -21,6 +21,7 @@
     <AndroidLinkTool>r8</AndroidLinkTool>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="GameplayScreenRotationLocker.cs" />
     <Compile Include="OsuGameActivity.cs" />
     <Compile Include="OsuGameAndroid.cs" />
   </ItemGroup>
@@ -53,4 +54,4 @@
     <AndroidResource Include="Resources\drawable\lazer.png" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
-</Project>
+</Project>

osu.Desktop/OsuGameDesktop.cs

@@ -125,12 +125,14 @@ namespace osu.Desktop
         {
             base.SetHost(host);
 
+            var iconStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico");
+
             switch (host.Window)
             {
                 // Legacy osuTK DesktopGameWindow
                 case DesktopGameWindow desktopGameWindow:
                     desktopGameWindow.CursorState |= CursorState.Hidden;
-                    desktopGameWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
+                    desktopGameWindow.SetIconFromStream(iconStream);
                     desktopGameWindow.Title = Name;
                     desktopGameWindow.FileDrop += (_, e) => fileDrop(e.FileNames);
                     break;
@@ -138,6 +140,7 @@ namespace osu.Desktop
                 // SDL2 DesktopWindow
                 case DesktopWindow desktopWindow:
                     desktopWindow.CursorState.Value |= CursorState.Hidden;
+                    desktopWindow.SetIconFromStream(iconStream);
                     desktopWindow.Title = Name;
                     desktopWindow.DragDrop += f => fileDrop(new[] { f });
                     break;

osu.Desktop/Windows/GameplayWinKeyBlocker.cs

@@ -5,24 +5,24 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
+using osu.Game;
 using osu.Game.Configuration;
 
 namespace osu.Desktop.Windows
 {
     public class GameplayWinKeyBlocker : Component
     {
-        private Bindable<bool> allowScreenSuspension;
         private Bindable<bool> disableWinKey;
+        private Bindable<bool> localUserPlaying;
 
-        private GameHost host;
+        [Resolved]
+        private GameHost host { get; set; }
 
         [BackgroundDependencyLoader]
-        private void load(GameHost host, OsuConfigManager config)
+        private void load(OsuGame game, OsuConfigManager config)
         {
-            this.host = host;
+            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
-
+            localUserPlaying.BindValueChanged(_ => updateBlocking());
-            allowScreenSuspension = host.AllowScreenSuspension.GetBoundCopy();
-            allowScreenSuspension.BindValueChanged(_ => updateBlocking());
 
             disableWinKey = config.GetBindable<bool>(OsuSetting.GameplayDisableWinKey);
             disableWinKey.BindValueChanged(_ => updateBlocking(), true);
@@ -30,7 +30,7 @@ namespace osu.Desktop.Windows
 
         private void updateBlocking()
         {
-            bool shouldDisable = disableWinKey.Value && !allowScreenSuspension.Value;
+            bool shouldDisable = disableWinKey.Value && localUserPlaying.Value;
 
             if (shouldDisable)
                 host.InputThread.Scheduler.Add(WindowsKey.Disable);

osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs

@@ -123,7 +123,10 @@ namespace osu.Game.Rulesets.Catch.Tests
                     Origin = Anchor.Centre,
                     Scale = new Vector2(4f),
                 }, skin);
+            });
 
+            AddStep("get trails container", () =>
+            {
                 trails = catcherArea.OfType<CatcherTrailDisplay>().Single();
                 catcherArea.MovableCatcher.SetHyperDashState(2);
             });

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
@@ -56,6 +57,7 @@ namespace osu.Game.Rulesets.Catch.Objects
                 Volume = s.Volume
             }).ToList();
 
+            int nodeIndex = 0;
             SliderEventDescriptor? lastEvent = null;
 
             foreach (var e in SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken))
@@ -105,7 +107,7 @@ namespace osu.Game.Rulesets.Catch.Objects
                     case SliderEventType.Repeat:
                         AddNested(new Fruit
                         {
-                            Samples = Samples,
+                            Samples = this.GetNodeSamples(nodeIndex++),
                             StartTime = e.Time,
                             X = X + Path.PositionAt(e.PathProgress).X,
                         });
@@ -119,7 +121,7 @@ namespace osu.Game.Rulesets.Catch.Objects
         public double Duration
         {
             get => this.SpanCount() * Path.Distance / Velocity;
-            set => throw new System.NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
+            set => throw new NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
         }
 
         public double EndTime => StartTime + Duration;

osu.Game.Rulesets.Catch/Skinning/CatchLegacySkinTransformer.cs

@@ -13,6 +13,11 @@ namespace osu.Game.Rulesets.Catch.Skinning
 {
     public class CatchLegacySkinTransformer : LegacySkinTransformer
     {
+        /// <summary>
+        /// For simplicity, let's use legacy combo font texture existence as a way to identify legacy skins from default.
+        /// </summary>
+        private bool providesComboCounter => this.HasFont(GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score");
+
         public CatchLegacySkinTransformer(ISkinSource source)
             : base(source)
         {
@@ -20,6 +25,16 @@ namespace osu.Game.Rulesets.Catch.Skinning
 
         public override Drawable GetDrawableComponent(ISkinComponent component)
         {
+            if (component is HUDSkinComponent hudComponent)
+            {
+                switch (hudComponent.Component)
+                {
+                    case HUDSkinComponents.ComboCounter:
+                        // catch may provide its own combo counter; hide the default.
+                        return providesComboCounter ? Drawable.Empty() : null;
+                }
+            }
+
             if (!(component is CatchSkinComponent catchSkinComponent))
                 return null;
 
@@ -55,11 +70,9 @@ namespace osu.Game.Rulesets.Catch.Skinning
                            this.GetAnimation("fruit-ryuuta", true, true, true);
 
                 case CatchSkinComponents.CatchComboCounter:
-                    var comboFont = GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score";
 
-                    // For simplicity, let's use legacy combo font texture existence as a way to identify legacy skins from default.
+                    if (providesComboCounter)
-                    if (this.HasFont(comboFont))
+                        return new LegacyCatchComboCounter(Source);
-                        return new LegacyComboCounter(Source);
 
                     break;
             }

osu.Game.Rulesets.Catch/Skinning/LegacyCatchComboCounter.cs

@@ -14,13 +14,13 @@ namespace osu.Game.Rulesets.Catch.Skinning
     /// <summary>
     /// A combo counter implementation that visually behaves almost similar to stable's osu!catch combo counter.
     /// </summary>
-    public class LegacyComboCounter : CompositeDrawable, ICatchComboCounter
+    public class LegacyCatchComboCounter : CompositeDrawable, ICatchComboCounter
     {
         private readonly LegacyRollingCounter counter;
 
         private readonly LegacyRollingCounter explosion;
 
-        public LegacyComboCounter(ISkin skin)
+        public LegacyCatchComboCounter(ISkin skin)
         {
             var fontName = skin.GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score";
             var fontOverlap = skin.GetConfig<LegacySetting, float>(LegacySetting.ComboOverlap)?.Value ?? -2f;

osu.Game.Rulesets.Catch/UI/Catcher.cs

@@ -145,11 +145,19 @@ namespace osu.Game.Rulesets.Catch.UI
                 }
             };
 
-            trailsTarget.Add(trails = new CatcherTrailDisplay(this));
+            trails = new CatcherTrailDisplay(this);
 
             updateCatcher();
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            // don't add in above load as we may potentially modify a parent in an unsafe manner.
+            trailsTarget.Add(trails);
+        }
+
         /// <summary>
         /// Creates proxied content to be displayed beneath hitobjects.
         /// </summary>

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

@@ -13,7 +13,7 @@ namespace osu.Game.Rulesets.Mania.Tests
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
-        [TestCase(2.3683365342338796d, "diffcalc-test")]
+        [TestCase(2.3449735700206298d, "diffcalc-test")]
         public void Test(double expected, string name)
             => base.Test(expected, name);
 

osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmap.cs

@@ -21,13 +21,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         /// </summary>
         public int TotalColumns => Stages.Sum(g => g.Columns);
 
+        /// <summary>
+        /// The total number of columns that were present in this <see cref="ManiaBeatmap"/> before any user adjustments.
+        /// </summary>
+        public readonly int OriginalTotalColumns;
+
         /// <summary>
         /// Creates a new <see cref="ManiaBeatmap"/>.
         /// </summary>
         /// <param name="defaultStage">The initial stages.</param>
-        public ManiaBeatmap(StageDefinition defaultStage)
+        /// <param name="originalTotalColumns">The total number of columns present before any user adjustments. Defaults to the total columns in <paramref name="defaultStage"/>.</param>
+        public ManiaBeatmap(StageDefinition defaultStage, int? originalTotalColumns = null)
         {
             Stages.Add(defaultStage);
+            OriginalTotalColumns = originalTotalColumns ?? defaultStage.Columns;
         }
 
         public override IEnumerable<BeatmapStatistic> GetStatistics()

osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs

@@ -28,6 +28,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         public bool Dual;
         public readonly bool IsForCurrentRuleset;
 
+        private readonly int originalTargetColumns;
+
         // Internal for testing purposes
         internal FastRandom Random { get; private set; }
 
@@ -65,6 +67,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 else
                     TargetColumns = Math.Max(4, Math.Min((int)roundedOverallDifficulty + 1, 7));
             }
+
+            originalTargetColumns = TargetColumns;
         }
 
         public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
@@ -81,7 +85,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
         protected override Beatmap<ManiaHitObject> CreateBeatmap()
         {
-            beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns });
+            beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns }, originalTargetColumns);
 
             if (Dual)
                 beatmap.Stages.Add(new StageDefinition { Columns = TargetColumns });
@@ -116,7 +120,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 prevNoteTimes.RemoveAt(0);
             prevNoteTimes.Add(newNoteTime);
 
-            density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
+            if (prevNoteTimes.Count >= 2)
+                density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
         }
 
         private double lastTime;
@@ -180,7 +185,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 case IHasDuration endTimeData:
                 {
-                    conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, originalBeatmap);
+                    conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, lastPattern, originalBeatmap);
 
                     recordNote(endTimeData.EndTime, new Vector2(256, 192));
                     computeDensity(endTimeData.EndTime);

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

@@ -3,8 +3,8 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
-using osu.Framework.Utils;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.MathUtils;
@@ -12,6 +12,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Beatmaps.Formats;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 {
@@ -25,8 +26,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         private const float osu_base_scoring_distance = 100;
 
-        public readonly double EndTime;
+        public readonly int StartTime;
-        public readonly double SegmentDuration;
+        public readonly int EndTime;
+        public readonly int SegmentDuration;
         public readonly int SpanCount;
 
         private PatternType convertType;
@@ -41,20 +43,26 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var distanceData = hitObject as IHasDistance;
             var repeatsData = hitObject as IHasRepeats;
 
-            SpanCount = repeatsData?.SpanCount() ?? 1;
+            Debug.Assert(distanceData != null);
 
             TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
             DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
 
-            // The true distance, accounting for any repeats
+            double beatLength;
-            double distance = (distanceData?.Distance ?? 0) * SpanCount;
+#pragma warning disable 618
-            // The velocity of the osu! hit object - calculated as the velocity of a slider
+            if (difficultyPoint is LegacyBeatmapDecoder.LegacyDifficultyControlPoint legacyDifficultyPoint)
-            double osuVelocity = osu_base_scoring_distance * beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier / timingPoint.BeatLength;
+#pragma warning restore 618
-            // The duration of the osu! hit object
+                beatLength = timingPoint.BeatLength * legacyDifficultyPoint.BpmMultiplier;
-            double osuDuration = distance / osuVelocity;
+            else
+                beatLength = timingPoint.BeatLength / difficultyPoint.SpeedMultiplier;
 
-            EndTime = hitObject.StartTime + osuDuration;
+            SpanCount = repeatsData?.SpanCount() ?? 1;
-            SegmentDuration = (EndTime - HitObject.StartTime) / SpanCount;
+            StartTime = (int)Math.Round(hitObject.StartTime);
+
+            // This matches stable's calculation.
+            EndTime = (int)Math.Floor(StartTime + distanceData.Distance * beatLength * SpanCount * 0.01 / beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier);
+
+            SegmentDuration = (EndTime - StartTime) / SpanCount;
         }
 
         public override IEnumerable<Pattern> Generate()
@@ -76,7 +84,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             foreach (var obj in originalPattern.HitObjects)
             {
-                if (!Precision.AlmostEquals(EndTime, obj.GetEndTime()))
+                if (EndTime != (int)Math.Round(obj.GetEndTime()))
                     intermediatePattern.Add(obj);
                 else
                     endTimePattern.Add(obj);
@@ -91,35 +99,35 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             if (TotalColumns == 1)
             {
                 var pattern = new Pattern();
-                addToPattern(pattern, 0, HitObject.StartTime, EndTime);
+                addToPattern(pattern, 0, StartTime, EndTime);
                 return pattern;
             }
 
             if (SpanCount > 1)
             {
                 if (SegmentDuration <= 90)
-                    return generateRandomHoldNotes(HitObject.StartTime, 1);
+                    return generateRandomHoldNotes(StartTime, 1);
 
                 if (SegmentDuration <= 120)
                 {
                     convertType |= PatternType.ForceNotStack;
-                    return generateRandomNotes(HitObject.StartTime, SpanCount + 1);
+                    return generateRandomNotes(StartTime, SpanCount + 1);
                 }
 
                 if (SegmentDuration <= 160)
-                    return generateStair(HitObject.StartTime);
+                    return generateStair(StartTime);
 
                 if (SegmentDuration <= 200 && ConversionDifficulty > 3)
-                    return generateRandomMultipleNotes(HitObject.StartTime);
+                    return generateRandomMultipleNotes(StartTime);
 
-                double duration = EndTime - HitObject.StartTime;
+                double duration = EndTime - StartTime;
                 if (duration >= 4000)
-                    return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
+                    return generateNRandomNotes(StartTime, 0.23, 0, 0);
 
                 if (SegmentDuration > 400 && SpanCount < TotalColumns - 1 - RandomStart)
-                    return generateTiledHoldNotes(HitObject.StartTime);
+                    return generateTiledHoldNotes(StartTime);
 
-                return generateHoldAndNormalNotes(HitObject.StartTime);
+                return generateHoldAndNormalNotes(StartTime);
             }
 
             if (SegmentDuration <= 110)
@@ -128,37 +136,37 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     convertType |= PatternType.ForceNotStack;
                 else
                     convertType &= ~PatternType.ForceNotStack;
-                return generateRandomNotes(HitObject.StartTime, SegmentDuration < 80 ? 1 : 2);
+                return generateRandomNotes(StartTime, SegmentDuration < 80 ? 1 : 2);
             }
 
             if (ConversionDifficulty > 6.5)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.78, 0.3, 0);
+                    return generateNRandomNotes(StartTime, 0.78, 0.3, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.85, 0.36, 0.03);
+                return generateNRandomNotes(StartTime, 0.85, 0.36, 0.03);
             }
 
             if (ConversionDifficulty > 4)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.43, 0.08, 0);
+                    return generateNRandomNotes(StartTime, 0.43, 0.08, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.56, 0.18, 0);
+                return generateNRandomNotes(StartTime, 0.56, 0.18, 0);
             }
 
             if (ConversionDifficulty > 2.5)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.3, 0, 0);
+                    return generateNRandomNotes(StartTime, 0.3, 0, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.37, 0.08, 0);
+                return generateNRandomNotes(StartTime, 0.37, 0.08, 0);
             }
 
             if (convertType.HasFlag(PatternType.LowProbability))
-                return generateNRandomNotes(HitObject.StartTime, 0.17, 0, 0);
+                return generateNRandomNotes(StartTime, 0.17, 0, 0);
 
-            return generateNRandomNotes(HitObject.StartTime, 0.27, 0, 0);
+            return generateNRandomNotes(StartTime, 0.27, 0, 0);
         }
 
         /// <summary>
@@ -167,7 +175,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="startTime">Start time of each hold note.</param>
         /// <param name="noteCount">Number of hold notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomHoldNotes(double startTime, int noteCount)
+        private Pattern generateRandomHoldNotes(int startTime, int noteCount)
         {
             // - - - -
             // ■ - ■ ■
@@ -202,7 +210,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="startTime">The start time.</param>
         /// <param name="noteCount">The number of notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomNotes(double startTime, int noteCount)
+        private Pattern generateRandomNotes(int startTime, int noteCount)
         {
             // - - - -
             // x - - -
@@ -234,7 +242,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateStair(double startTime)
+        private Pattern generateStair(int startTime)
         {
             // - - - -
             // x - - -
@@ -286,7 +294,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomMultipleNotes(double startTime)
+        private Pattern generateRandomMultipleNotes(int startTime)
         {
             // - - - -
             // x - - -
@@ -329,7 +337,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="p3">The probability required for 3 hold notes to be generated.</param>
         /// <param name="p4">The probability required for 4 hold notes to be generated.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateNRandomNotes(double startTime, double p2, double p3, double p4)
+        private Pattern generateNRandomNotes(int startTime, double p2, double p3, double p4)
         {
             // - - - -
             // ■ - ■ ■
@@ -366,7 +374,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             static bool isDoubleSample(HitSampleInfo sample) => sample.Name == HitSampleInfo.HIT_CLAP || sample.Name == HitSampleInfo.HIT_FINISH;
 
             bool canGenerateTwoNotes = !convertType.HasFlag(PatternType.LowProbability);
-            canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);
+            canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(StartTime).Any(isDoubleSample);
 
             if (canGenerateTwoNotes)
                 p2 = 1;
@@ -379,7 +387,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The first hold note start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateTiledHoldNotes(double startTime)
+        private Pattern generateTiledHoldNotes(int startTime)
         {
             // - - - -
             // ■ ■ ■ ■
@@ -394,6 +402,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             int columnRepeat = Math.Min(SpanCount, TotalColumns);
 
+            // Due to integer rounding, this is not guaranteed to be the same as EndTime (the class-level variable).
+            int endTime = startTime + SegmentDuration * SpanCount;
+
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
             if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
                 nextColumn = FindAvailableColumn(nextColumn, PreviousPattern);
@@ -401,7 +412,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             for (int i = 0; i < columnRepeat; i++)
             {
                 nextColumn = FindAvailableColumn(nextColumn, pattern);
-                addToPattern(pattern, nextColumn, startTime, EndTime);
+                addToPattern(pattern, nextColumn, startTime, endTime);
                 startTime += SegmentDuration;
             }
 
@@ -413,7 +424,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time of notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateHoldAndNormalNotes(double startTime)
+        private Pattern generateHoldAndNormalNotes(int startTime)
         {
             // - - - -
             // ■ x x -
@@ -448,7 +459,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             for (int i = 0; i <= SpanCount; i++)
             {
-                if (!(ignoreHead && startTime == HitObject.StartTime))
+                if (!(ignoreHead && startTime == StartTime))
                 {
                     for (int j = 0; j < noteCount; j++)
                     {
@@ -471,19 +482,18 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="time">The time to retrieve the sample info list from.</param>
         /// <returns></returns>
-        private IList<HitSampleInfo> sampleInfoListAt(double time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
+        private IList<HitSampleInfo> sampleInfoListAt(int time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
 
         /// <summary>
         /// Retrieves the list of node samples that occur at time greater than or equal to <paramref name="time"/>.
         /// </summary>
         /// <param name="time">The time to retrieve node samples at.</param>
-        private List<IList<HitSampleInfo>> nodeSamplesAt(double time)
+        private List<IList<HitSampleInfo>> nodeSamplesAt(int time)
         {
             if (!(HitObject is IHasPathWithRepeats curveData))
                 return null;
 
-            // mathematically speaking this should be a whole number always, but floating-point arithmetic is not so kind
+            var index = SegmentDuration == 0 ? 0 : (time - StartTime) / SegmentDuration;
-            var index = (int)Math.Round(SegmentDuration == 0 ? 0 : (time - HitObject.StartTime) / SegmentDuration, MidpointRounding.AwayFromZero);
 
             // avoid slicing the list & creating copies, if at all possible.
             return index == 0 ? curveData.NodeSamples : curveData.NodeSamples.Skip(index).ToList();
@@ -496,7 +506,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="column">The column to add the note to.</param>
         /// <param name="startTime">The start time of the note.</param>
         /// <param name="endTime">The end time of the note (set to <paramref name="startTime"/> for a non-hold note).</param>
-        private void addToPattern(Pattern pattern, int column, double startTime, double endTime)
+        private void addToPattern(Pattern pattern, int column, int startTime, int endTime)
         {
             ManiaHitObject newObject;
 

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

@@ -14,12 +14,17 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 {
     internal class EndTimeObjectPatternGenerator : PatternGenerator
     {
-        private readonly double endTime;
+        private readonly int endTime;
+        private readonly PatternType convertType;
 
-        public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
+        public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, Pattern previousPattern, IBeatmap originalBeatmap)
-            : base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
+            : base(random, hitObject, beatmap, previousPattern, originalBeatmap)
         {
-            endTime = (HitObject as IHasDuration)?.EndTime ?? 0;
+            endTime = (int)((HitObject as IHasDuration)?.EndTime ?? 0);
+
+            convertType = PreviousPattern.ColumnWithObjects == TotalColumns
+                ? PatternType.None
+                : PatternType.ForceNotStack;
         }
 
         public override IEnumerable<Pattern> Generate()
@@ -40,18 +45,25 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     break;
 
                 case 8:
-                    addToPattern(pattern, FindAvailableColumn(GetRandomColumn(), PreviousPattern), generateHold);
+                    addToPattern(pattern, getRandomColumn(), generateHold);
                     break;
 
                 default:
-                    if (TotalColumns > 0)
+                    addToPattern(pattern, getRandomColumn(0), generateHold);
-                        addToPattern(pattern, GetRandomColumn(), generateHold);
                     break;
             }
 
             return pattern;
         }
 
+        private int getRandomColumn(int? lowerBound = null)
+        {
+            if ((convertType & PatternType.ForceNotStack) > 0)
+                return FindAvailableColumn(GetRandomColumn(lowerBound), lowerBound, patterns: PreviousPattern);
+
+            return FindAvailableColumn(GetRandomColumn(lowerBound), lowerBound);
+        }
+
         /// <summary>
         /// Constructs and adds a note to a pattern.
         /// </summary>

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

@@ -397,7 +397,11 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 case 4:
                     centreProbability = 0;
-                    p2 = Math.Min(p2 * 2, 0.2);
+
+                    // Stable requires rngValue > x, which is an inverse-probability. Lazer uses true probability (1 - x).
+                    // But multiplying this value by 2 (stable) is not the same operation as dividing it by 2 (lazer),
+                    // so it needs to be converted to from a probability and then back after the multiplication.
+                    p2 = 1 - Math.Max((1 - p2) * 2, 0.8);
                     p3 = 0;
                     break;
 
@@ -408,11 +412,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 case 6:
                     centreProbability = 0;
-                    p2 = Math.Min(p2 * 2, 0.5);
+
-                    p3 = Math.Min(p3 * 2, 0.15);
+                    // Stable requires rngValue > x, which is an inverse-probability. Lazer uses true probability (1 - x).
+                    // But multiplying this value by 2 (stable) is not the same operation as dividing it by 2 (lazer),
+                    // so it needs to be converted to from a probability and then back after the multiplication.
+                    p2 = 1 - Math.Max((1 - p2) * 2, 0.5);
+                    p3 = 1 - Math.Max((1 - p3) * 2, 0.85);
                     break;
             }
 
+            // The stable values were allowed to exceed 1, which indicate <0% probability.
+            // These values needs to be clamped otherwise GetRandomNoteCount() will throw an exception.
+            p2 = Math.Clamp(p2, 0, 1);
+            p3 = Math.Clamp(p3, 0, 1);
+
             double centreVal = Random.NextDouble();
             int noteCount = GetRandomNoteCount(p2, p3);
 

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

@@ -8,5 +8,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
     public class ManiaDifficultyAttributes : DifficultyAttributes
     {
         public double GreatHitWindow;
+        public double ScoreMultiplier;
     }
 }

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps;
@@ -10,10 +11,12 @@ using osu.Game.Rulesets.Difficulty.Skills;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Mania.Difficulty.Skills;
+using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Rulesets.Mania.Mods;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Difficulty
@@ -23,11 +26,13 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         private const double star_scaling_factor = 0.018;
 
         private readonly bool isForCurrentRuleset;
+        private readonly double originalOverallDifficulty;
 
         public ManiaDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
             : base(ruleset, beatmap)
         {
             isForCurrentRuleset = beatmap.BeatmapInfo.Ruleset.Equals(ruleset.RulesetInfo);
+            originalOverallDifficulty = beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty;
         }
 
         protected override DifficultyAttributes CreateDifficultyAttributes(IBeatmap beatmap, Mod[] mods, Skill[] skills, double clockRate)
@@ -40,64 +45,33 @@ namespace osu.Game.Rulesets.Mania.Difficulty
 
             return new ManiaDifficultyAttributes
             {
-                StarRating = difficultyValue(skills) * star_scaling_factor,
+                StarRating = skills[0].DifficultyValue() * star_scaling_factor,
                 Mods = mods,
                 // Todo: This int cast is temporary to achieve 1:1 results with osu!stable, and should be removed in the future
-                GreatHitWindow = (int)(hitWindows.WindowFor(HitResult.Great)) / clockRate,
+                GreatHitWindow = (int)Math.Ceiling(getHitWindow300(mods) / clockRate),
+                ScoreMultiplier = getScoreMultiplier(beatmap, mods),
                 MaxCombo = beatmap.HitObjects.Sum(h => h is HoldNote ? 2 : 1),
                 Skills = skills
             };
         }
 
-        private double difficultyValue(Skill[] skills)
-        {
-            // Preprocess the strains to find the maximum overall + individual (aggregate) strain from each section
-            var overall = skills.OfType<Overall>().Single();
-            var aggregatePeaks = new List<double>(Enumerable.Repeat(0.0, overall.StrainPeaks.Count));
-
-            foreach (var individual in skills.OfType<Individual>())
-            {
-                for (int i = 0; i < individual.StrainPeaks.Count; i++)
-                {
-                    double aggregate = individual.StrainPeaks[i] + overall.StrainPeaks[i];
-
-                    if (aggregate > aggregatePeaks[i])
-                        aggregatePeaks[i] = aggregate;
-                }
-            }
-
-            aggregatePeaks.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
-
-            double difficulty = 0;
-            double weight = 1;
-
-            // Difficulty is the weighted sum of the highest strains from every section.
-            foreach (double strain in aggregatePeaks)
-            {
-                difficulty += strain * weight;
-                weight *= 0.9;
-            }
-
-            return difficulty;
-        }
-
         protected override IEnumerable<DifficultyHitObject> CreateDifficultyHitObjects(IBeatmap beatmap, double clockRate)
         {
-            for (int i = 1; i < beatmap.HitObjects.Count; i++)
+            var sortedObjects = beatmap.HitObjects.ToArray();
-                yield return new ManiaDifficultyHitObject(beatmap.HitObjects[i], beatmap.HitObjects[i - 1], clockRate);
+
+            LegacySortHelper<HitObject>.Sort(sortedObjects, Comparer<HitObject>.Create((a, b) => (int)Math.Round(a.StartTime) - (int)Math.Round(b.StartTime)));
+
+            for (int i = 1; i < sortedObjects.Length; i++)
+                yield return new ManiaDifficultyHitObject(sortedObjects[i], sortedObjects[i - 1], clockRate);
         }
 
-        protected override Skill[] CreateSkills(IBeatmap beatmap)
+        // Sorting is done in CreateDifficultyHitObjects, since the full list of hitobjects is required.
+        protected override IEnumerable<DifficultyHitObject> SortObjects(IEnumerable<DifficultyHitObject> input) => input;
+
+        protected override Skill[] CreateSkills(IBeatmap beatmap) => new Skill[]
         {
-            int columnCount = ((ManiaBeatmap)beatmap).TotalColumns;
+            new Strain(((ManiaBeatmap)beatmap).TotalColumns)
-
+        };
-            var skills = new List<Skill> { new Overall(columnCount) };
-
-            for (int i = 0; i < columnCount; i++)
-                skills.Add(new Individual(i, columnCount));
-
-            return skills.ToArray();
-        }
 
         protected override Mod[] DifficultyAdjustmentMods
         {
@@ -122,12 +96,73 @@ namespace osu.Game.Rulesets.Mania.Difficulty
                     new ManiaModKey3(),
                     new ManiaModKey4(),
                     new ManiaModKey5(),
+                    new MultiMod(new ManiaModKey5(), new ManiaModDualStages()),
                     new ManiaModKey6(),
+                    new MultiMod(new ManiaModKey6(), new ManiaModDualStages()),
                     new ManiaModKey7(),
+                    new MultiMod(new ManiaModKey7(), new ManiaModDualStages()),
                     new ManiaModKey8(),
+                    new MultiMod(new ManiaModKey8(), new ManiaModDualStages()),
                     new ManiaModKey9(),
+                    new MultiMod(new ManiaModKey9(), new ManiaModDualStages()),
                 }).ToArray();
             }
         }
+
+        private int getHitWindow300(Mod[] mods)
+        {
+            if (isForCurrentRuleset)
+            {
+                double od = Math.Min(10.0, Math.Max(0, 10.0 - originalOverallDifficulty));
+                return applyModAdjustments(34 + 3 * od, mods);
+            }
+
+            if (Math.Round(originalOverallDifficulty) > 4)
+                return applyModAdjustments(34, mods);
+
+            return applyModAdjustments(47, mods);
+
+            static int applyModAdjustments(double value, Mod[] mods)
+            {
+                if (mods.Any(m => m is ManiaModHardRock))
+                    value /= 1.4;
+                else if (mods.Any(m => m is ManiaModEasy))
+                    value *= 1.4;
+
+                if (mods.Any(m => m is ManiaModDoubleTime))
+                    value *= 1.5;
+                else if (mods.Any(m => m is ManiaModHalfTime))
+                    value *= 0.75;
+
+                return (int)value;
+            }
+        }
+
+        private double getScoreMultiplier(IBeatmap beatmap, Mod[] mods)
+        {
+            double scoreMultiplier = 1;
+
+            foreach (var m in mods)
+            {
+                switch (m)
+                {
+                    case ManiaModNoFail _:
+                    case ManiaModEasy _:
+                    case ManiaModHalfTime _:
+                        scoreMultiplier *= 0.5;
+                        break;
+                }
+            }
+
+            var maniaBeatmap = (ManiaBeatmap)beatmap;
+            int diff = maniaBeatmap.TotalColumns - maniaBeatmap.OriginalTotalColumns;
+
+            if (diff > 0)
+                scoreMultiplier *= 0.9;
+            else if (diff < 0)
+                scoreMultiplier *= 0.9 + 0.04 * diff;
+
+            return scoreMultiplier;
+        }
     }
 }

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

@@ -1,47 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using System.Linq;
-using osu.Game.Rulesets.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Difficulty.Skills;
-using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Objects;
-
-namespace osu.Game.Rulesets.Mania.Difficulty.Skills
-{
-    public class Individual : Skill
-    {
-        protected override double SkillMultiplier => 1;
-        protected override double StrainDecayBase => 0.125;
-
-        private readonly double[] holdEndTimes;
-
-        private readonly int column;
-
-        public Individual(int column, int columnCount)
-        {
-            this.column = column;
-
-            holdEndTimes = new double[columnCount];
-        }
-
-        protected override double StrainValueOf(DifficultyHitObject current)
-        {
-            var maniaCurrent = (ManiaDifficultyHitObject)current;
-            var endTime = maniaCurrent.BaseObject.GetEndTime();
-
-            try
-            {
-                if (maniaCurrent.BaseObject.Column != column)
-                    return 0;
-
-                // We give a slight bonus if something is held meanwhile
-                return holdEndTimes.Any(t => t > endTime) ? 2.5 : 2;
-            }
-            finally
-            {
-                holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
-            }
-        }
-    }
-}

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

@@ -1,56 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Game.Rulesets.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Difficulty.Skills;
-using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Objects;
-
-namespace osu.Game.Rulesets.Mania.Difficulty.Skills
-{
-    public class Overall : Skill
-    {
-        protected override double SkillMultiplier => 1;
-        protected override double StrainDecayBase => 0.3;
-
-        private readonly double[] holdEndTimes;
-
-        private readonly int columnCount;
-
-        public Overall(int columnCount)
-        {
-            this.columnCount = columnCount;
-
-            holdEndTimes = new double[columnCount];
-        }
-
-        protected override double StrainValueOf(DifficultyHitObject current)
-        {
-            var maniaCurrent = (ManiaDifficultyHitObject)current;
-            var endTime = maniaCurrent.BaseObject.GetEndTime();
-
-            double holdFactor = 1.0; // Factor in case something else is held
-            double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
-
-            for (int i = 0; i < columnCount; i++)
-            {
-                // If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
-                if (current.BaseObject.StartTime < holdEndTimes[i] && endTime > holdEndTimes[i])
-                    holdAddition = 1.0;
-
-                // ... this addition only is valid if there is _no_ other note with the same ending.
-                // Releasing multiple notes at the same time is just as easy as releasing one
-                if (endTime == holdEndTimes[i])
-                    holdAddition = 0;
-
-                // We give a slight bonus if something is held meanwhile
-                if (holdEndTimes[i] > endTime)
-                    holdFactor = 1.25;
-            }
-
-            holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
-
-            return (1 + holdAddition) * holdFactor;
-        }
-    }
-}

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

@@ -0,0 +1,80 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Difficulty.Skills;
+using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Objects;
+
+namespace osu.Game.Rulesets.Mania.Difficulty.Skills
+{
+    public class Strain : Skill
+    {
+        private const double individual_decay_base = 0.125;
+        private const double overall_decay_base = 0.30;
+
+        protected override double SkillMultiplier => 1;
+        protected override double StrainDecayBase => 1;
+
+        private readonly double[] holdEndTimes;
+        private readonly double[] individualStrains;
+
+        private double individualStrain;
+        private double overallStrain;
+
+        public Strain(int totalColumns)
+        {
+            holdEndTimes = new double[totalColumns];
+            individualStrains = new double[totalColumns];
+            overallStrain = 1;
+        }
+
+        protected override double StrainValueOf(DifficultyHitObject current)
+        {
+            var maniaCurrent = (ManiaDifficultyHitObject)current;
+            var endTime = maniaCurrent.BaseObject.GetEndTime();
+            var column = maniaCurrent.BaseObject.Column;
+
+            double holdFactor = 1.0; // Factor to all additional strains in case something else is held
+            double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
+
+            // Fill up the holdEndTimes array
+            for (int i = 0; i < holdEndTimes.Length; ++i)
+            {
+                // If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
+                if (Precision.DefinitelyBigger(holdEndTimes[i], maniaCurrent.BaseObject.StartTime, 1) && Precision.DefinitelyBigger(endTime, holdEndTimes[i], 1))
+                    holdAddition = 1.0;
+
+                // ... this addition only is valid if there is _no_ other note with the same ending. Releasing multiple notes at the same time is just as easy as releasing 1
+                if (Precision.AlmostEquals(endTime, holdEndTimes[i], 1))
+                    holdAddition = 0;
+
+                // We give a slight bonus to everything if something is held meanwhile
+                if (Precision.DefinitelyBigger(holdEndTimes[i], endTime, 1))
+                    holdFactor = 1.25;
+
+                // Decay individual strains
+                individualStrains[i] = applyDecay(individualStrains[i], current.DeltaTime, individual_decay_base);
+            }
+
+            holdEndTimes[column] = endTime;
+
+            // Increase individual strain in own column
+            individualStrains[column] += 2.0 * holdFactor;
+            individualStrain = individualStrains[column];
+
+            overallStrain = applyDecay(overallStrain, current.DeltaTime, overall_decay_base) + (1 + holdAddition) * holdFactor;
+
+            return individualStrain + overallStrain - CurrentStrain;
+        }
+
+        protected override double GetPeakStrain(double offset)
+            => applyDecay(individualStrain, offset - Previous[0].BaseObject.StartTime, individual_decay_base)
+               + applyDecay(overallStrain, offset - Previous[0].BaseObject.StartTime, overall_decay_base);
+
+        private double applyDecay(double value, double deltaTime, double decayBase)
+            => value * Math.Pow(decayBase, deltaTime / 1000);
+    }
+}

osu.Game.Rulesets.Mania/MathUtils/LegacySortHelper.cs

@@ -0,0 +1,165 @@
+// 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.Contracts;
+
+namespace osu.Game.Rulesets.Mania.MathUtils
+{
+    /// <summary>
+    /// Provides access to .NET4.0 unstable sorting methods.
+    /// </summary>
+    /// <remarks>
+    /// Source: https://referencesource.microsoft.com/#mscorlib/system/collections/generic/arraysorthelper.cs
+    /// Copyright (c) Microsoft Corporation.  All rights reserved.
+    /// </remarks>
+    internal static class LegacySortHelper<T>
+    {
+        private const int quick_sort_depth_threshold = 32;
+
+        public static void Sort(T[] keys, IComparer<T> comparer)
+        {
+            if (keys == null)
+                throw new ArgumentNullException(nameof(keys));
+
+            if (keys.Length == 0)
+                return;
+
+            comparer ??= Comparer<T>.Default;
+            depthLimitedQuickSort(keys, 0, keys.Length - 1, comparer, quick_sort_depth_threshold);
+        }
+
+        private static void depthLimitedQuickSort(T[] keys, int left, int right, IComparer<T> comparer, int depthLimit)
+        {
+            do
+            {
+                if (depthLimit == 0)
+                {
+                    heapsort(keys, left, right, comparer);
+                    return;
+                }
+
+                int i = left;
+                int j = right;
+
+                // pre-sort the low, middle (pivot), and high values in place.
+                // this improves performance in the face of already sorted data, or
+                // data that is made up of multiple sorted runs appended together.
+                int middle = i + ((j - i) >> 1);
+                swapIfGreater(keys, comparer, i, middle); // swap the low with the mid point
+                swapIfGreater(keys, comparer, i, j); // swap the low with the high
+                swapIfGreater(keys, comparer, middle, j); // swap the middle with the high
+
+                T x = keys[middle];
+
+                do
+                {
+                    while (comparer.Compare(keys[i], x) < 0) i++;
+                    while (comparer.Compare(x, keys[j]) < 0) j--;
+                    Contract.Assert(i >= left && j <= right, "(i>=left && j<=right)  Sort failed - Is your IComparer bogus?");
+                    if (i > j) break;
+
+                    if (i < j)
+                    {
+                        T key = keys[i];
+                        keys[i] = keys[j];
+                        keys[j] = key;
+                    }
+
+                    i++;
+                    j--;
+                } while (i <= j);
+
+                // The next iteration of the while loop is to "recursively" sort the larger half of the array and the
+                // following calls recrusively sort the smaller half.  So we subtrack one from depthLimit here so
+                // both sorts see the new value.
+                depthLimit--;
+
+                if (j - left <= right - i)
+                {
+                    if (left < j) depthLimitedQuickSort(keys, left, j, comparer, depthLimit);
+                    left = i;
+                }
+                else
+                {
+                    if (i < right) depthLimitedQuickSort(keys, i, right, comparer, depthLimit);
+                    right = j;
+                }
+            } while (left < right);
+        }
+
+        private static void heapsort(T[] keys, int lo, int hi, IComparer<T> comparer)
+        {
+            Contract.Requires(keys != null);
+            Contract.Requires(comparer != null);
+            Contract.Requires(lo >= 0);
+            Contract.Requires(hi > lo);
+            Contract.Requires(hi < keys.Length);
+
+            int n = hi - lo + 1;
+
+            for (int i = n / 2; i >= 1; i = i - 1)
+            {
+                downHeap(keys, i, n, lo, comparer);
+            }
+
+            for (int i = n; i > 1; i = i - 1)
+            {
+                swap(keys, lo, lo + i - 1);
+                downHeap(keys, 1, i - 1, lo, comparer);
+            }
+        }
+
+        private static void downHeap(T[] keys, int i, int n, int lo, IComparer<T> comparer)
+        {
+            Contract.Requires(keys != null);
+            Contract.Requires(comparer != null);
+            Contract.Requires(lo >= 0);
+            Contract.Requires(lo < keys.Length);
+
+            T d = keys[lo + i - 1];
+
+            while (i <= n / 2)
+            {
+                var child = 2 * i;
+
+                if (child < n && comparer.Compare(keys[lo + child - 1], keys[lo + child]) < 0)
+                {
+                    child++;
+                }
+
+                if (!(comparer.Compare(d, keys[lo + child - 1]) < 0))
+                    break;
+
+                keys[lo + i - 1] = keys[lo + child - 1];
+                i = child;
+            }
+
+            keys[lo + i - 1] = d;
+        }
+
+        private static void swap(T[] a, int i, int j)
+        {
+            if (i != j)
+            {
+                T t = a[i];
+                a[i] = a[j];
+                a[j] = t;
+            }
+        }
+
+        private static void swapIfGreater(T[] keys, IComparer<T> comparer, int a, int b)
+        {
+            if (a != b)
+            {
+                if (comparer.Compare(keys[a], keys[b]) > 0)
+                {
+                    T key = keys[a];
+                    keys[a] = keys[b];
+                    keys[b] = key;
+                }
+            }
+        }
+    }
+}

osu.Game.Rulesets.Mania/Mods/ManiaKeyMod.cs

@@ -39,6 +39,7 @@ namespace osu.Game.Rulesets.Mania.Mods
             typeof(ManiaModKey7),
             typeof(ManiaModKey8),
             typeof(ManiaModKey9),
+            typeof(ManiaModKey10),
         }.Except(new[] { GetType() }).ToArray();
     }
 }

osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/convert-samples-expected-conversion.json

@@ -10,7 +10,7 @@
         ["soft-hitnormal"],
         ["drum-hitnormal"]
       ],
-      "Samples": ["drum-hitnormal"]
+      "Samples": ["-hitnormal"]
     }, {
       "StartTime": 1875.0,
       "EndTime": 2750.0,
@@ -19,7 +19,7 @@
         ["soft-hitnormal"],
         ["drum-hitnormal"]
       ],
-      "Samples": ["drum-hitnormal"]
+      "Samples": ["-hitnormal"]
     }]
   }, {
     "StartTime": 3750.0,

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

@@ -0,0 +1,41 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.UI;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public class TestPlayfieldBorder : OsuTestScene
+    {
+        public TestPlayfieldBorder()
+        {
+            Bindable<PlayfieldBorderStyle> playfieldBorderStyle = new Bindable<PlayfieldBorderStyle>();
+
+            AddStep("add drawables", () =>
+            {
+                Child = new Container
+                {
+                    Size = new Vector2(400, 300),
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Children = new Drawable[]
+                    {
+                        new PlayfieldBorder
+                        {
+                            PlayfieldBorderStyle = { BindTarget = playfieldBorderStyle }
+                        }
+                    }
+                };
+            });
+
+            AddStep("Set none", () => playfieldBorderStyle.Value = PlayfieldBorderStyle.None);
+            AddStep("Set corners", () => playfieldBorderStyle.Value = PlayfieldBorderStyle.Corners);
+            AddStep("Set full", () => playfieldBorderStyle.Value = PlayfieldBorderStyle.Full);
+        }
+    }
+}

osu.Game.Rulesets.Osu/Configuration/OsuRulesetConfigManager.cs

@@ -3,6 +3,7 @@
 
 using osu.Game.Configuration;
 using osu.Game.Rulesets.Configuration;
+using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Osu.Configuration
 {
@@ -19,6 +20,7 @@ namespace osu.Game.Rulesets.Osu.Configuration
             Set(OsuRulesetSetting.SnakingInSliders, true);
             Set(OsuRulesetSetting.SnakingOutSliders, true);
             Set(OsuRulesetSetting.ShowCursorTrail, true);
+            Set(OsuRulesetSetting.PlayfieldBorderStyle, PlayfieldBorderStyle.None);
         }
     }
 
@@ -26,6 +28,7 @@ namespace osu.Game.Rulesets.Osu.Configuration
     {
         SnakingInSliders,
         SnakingOutSliders,
-        ShowCursorTrail
+        ShowCursorTrail,
+        PlayfieldBorderStyle,
     }
 }

osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs

@@ -21,6 +21,12 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
             InternalChild = circlePiece = new HitCirclePiece();
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            BeginPlacement();
+        }
+
         protected override void Update()
         {
             base.Update();

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

@@ -56,7 +56,18 @@ namespace osu.Game.Rulesets.Osu.Edit
         [BackgroundDependencyLoader]
         private void load()
         {
-            LayerBelowRuleset.Add(distanceSnapGridContainer = new Container { RelativeSizeAxes = Axes.Both });
+            LayerBelowRuleset.AddRange(new Drawable[]
+            {
+                new PlayfieldBorder
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    PlayfieldBorderStyle = { Value = PlayfieldBorderStyle.Corners }
+                },
+                distanceSnapGridContainer = new Container
+                {
+                    RelativeSizeAxes = Axes.Both
+                }
+            });
 
             selectedHitObjects = EditorBeatmap.SelectedHitObjects.GetBoundCopy();
             selectedHitObjects.CollectionChanged += (_, __) => updateDistanceSnapGrid();

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

@@ -137,6 +137,10 @@ namespace osu.Game.Rulesets.Osu.Objects
 
             Velocity = scoringDistance / timingPoint.BeatLength;
             TickDistance = scoringDistance / difficulty.SliderTickRate * TickDistanceMultiplier;
+
+            // The samples should be attached to the slider tail, however this can only be done after LegacyLastTick is removed otherwise they would play earlier than they're intended to.
+            // For now, the samples are attached to and played by the slider itself at the correct end time.
+            Samples = this.GetNodeSamples(repeatCount + 1);
         }
 
         protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
@@ -230,15 +234,12 @@ namespace osu.Game.Rulesets.Osu.Objects
                 tick.Samples = sampleList;
 
             foreach (var repeat in NestedHitObjects.OfType<SliderRepeat>())
-                repeat.Samples = getNodeSamples(repeat.RepeatIndex + 1);
+                repeat.Samples = this.GetNodeSamples(repeat.RepeatIndex + 1);
 
             if (HeadCircle != null)
-                HeadCircle.Samples = getNodeSamples(0);
+                HeadCircle.Samples = this.GetNodeSamples(0);
         }
 
-        private IList<HitSampleInfo> getNodeSamples(int nodeIndex) =>
-            nodeIndex < NodeSamples.Count ? NodeSamples[nodeIndex] : Samples;
-
         public override Judgement CreateJudgement() => new OsuIgnoreJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;

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

@@ -17,12 +17,16 @@ using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Skinning;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Game.Rulesets.Osu.Configuration;
 using osuTK;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
     public class OsuPlayfield : Playfield
     {
+        private readonly PlayfieldBorder playfieldBorder;
         private readonly ProxyContainer approachCircles;
         private readonly ProxyContainer spinnerProxies;
         private readonly JudgementContainer<DrawableOsuJudgement> judgementLayer;
@@ -33,12 +37,19 @@ namespace osu.Game.Rulesets.Osu.UI
 
         protected override GameplayCursorContainer CreateCursor() => new OsuCursorContainer();
 
+        private readonly Bindable<bool> playfieldBorderStyle = new BindableBool();
+
         private readonly IDictionary<HitResult, DrawablePool<DrawableOsuJudgement>> poolDictionary = new Dictionary<HitResult, DrawablePool<DrawableOsuJudgement>>();
 
         public OsuPlayfield()
         {
             InternalChildren = new Drawable[]
             {
+                playfieldBorder = new PlayfieldBorder
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Depth = 3
+                },
                 spinnerProxies = new ProxyContainer
                 {
                     RelativeSizeAxes = Axes.Both
@@ -76,6 +87,12 @@ namespace osu.Game.Rulesets.Osu.UI
             AddRangeInternal(poolDictionary.Values);
         }
 
+        [BackgroundDependencyLoader(true)]
+        private void load(OsuRulesetConfigManager config)
+        {
+            config?.BindWith(OsuRulesetSetting.PlayfieldBorderStyle, playfieldBorder.PlayfieldBorderStyle);
+        }
+
         public override void Add(DrawableHitObject h)
         {
             h.OnNewResult += onNewResult;

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

@@ -5,6 +5,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Overlays.Settings;
 using osu.Game.Rulesets.Osu.Configuration;
+using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
@@ -39,6 +40,11 @@ namespace osu.Game.Rulesets.Osu.UI
                     LabelText = "Cursor trail",
                     Current = config.GetBindable<bool>(OsuRulesetSetting.ShowCursorTrail)
                 },
+                new SettingsEnumDropdown<PlayfieldBorderStyle>
+                {
+                    LabelText = "Playfield border style",
+                    Current = config.GetBindable<PlayfieldBorderStyle>(OsuRulesetSetting.PlayfieldBorderStyle),
+                },
             };
         }
     }

osu.Game.Tests/Beatmaps/BeatmapDifficultyManagerTest.cs

@@ -28,5 +28,28 @@ namespace osu.Game.Tests.Beatmaps
 
             Assert.That(key1, Is.EqualTo(key2));
         }
+
+        [TestCase(1.3, DifficultyRating.Easy)]
+        [TestCase(1.993, DifficultyRating.Easy)]
+        [TestCase(1.998, DifficultyRating.Normal)]
+        [TestCase(2.4, DifficultyRating.Normal)]
+        [TestCase(2.693, DifficultyRating.Normal)]
+        [TestCase(2.698, DifficultyRating.Hard)]
+        [TestCase(3.5, DifficultyRating.Hard)]
+        [TestCase(3.993, DifficultyRating.Hard)]
+        [TestCase(3.997, DifficultyRating.Insane)]
+        [TestCase(5.0, DifficultyRating.Insane)]
+        [TestCase(5.292, DifficultyRating.Insane)]
+        [TestCase(5.297, DifficultyRating.Expert)]
+        [TestCase(6.2, DifficultyRating.Expert)]
+        [TestCase(6.493, DifficultyRating.Expert)]
+        [TestCase(6.498, DifficultyRating.ExpertPlus)]
+        [TestCase(8.3, DifficultyRating.ExpertPlus)]
+        public void TestDifficultyRatingMapping(double starRating, DifficultyRating expectedBracket)
+        {
+            var actualBracket = BeatmapDifficultyManager.GetDifficultyRating(starRating);
+
+            Assert.AreEqual(expectedBracket, actualBracket);
+        }
     }
 }

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

@@ -651,5 +651,63 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.IsInstanceOf<LegacyDifficultyCalculatorBeatmapDecoder>(decoder);
             }
         }
+
+        [Test]
+        public void TestMultiSegmentSliders()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("multi-segment-slider.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var decoded = decoder.Decode(stream);
+
+                // Multi-segment
+                var first = ((IHasPath)decoded.HitObjects[0]).Path;
+
+                Assert.That(first.ControlPoints[0].Position.Value, Is.EqualTo(Vector2.Zero));
+                Assert.That(first.ControlPoints[0].Type.Value, Is.EqualTo(PathType.PerfectCurve));
+                Assert.That(first.ControlPoints[1].Position.Value, Is.EqualTo(new Vector2(161, -244)));
+                Assert.That(first.ControlPoints[1].Type.Value, Is.EqualTo(null));
+
+                Assert.That(first.ControlPoints[2].Position.Value, Is.EqualTo(new Vector2(376, -3)));
+                Assert.That(first.ControlPoints[2].Type.Value, Is.EqualTo(PathType.Bezier));
+                Assert.That(first.ControlPoints[3].Position.Value, Is.EqualTo(new Vector2(68, 15)));
+                Assert.That(first.ControlPoints[3].Type.Value, Is.EqualTo(null));
+                Assert.That(first.ControlPoints[4].Position.Value, Is.EqualTo(new Vector2(259, -132)));
+                Assert.That(first.ControlPoints[4].Type.Value, Is.EqualTo(null));
+                Assert.That(first.ControlPoints[5].Position.Value, Is.EqualTo(new Vector2(92, -107)));
+                Assert.That(first.ControlPoints[5].Type.Value, Is.EqualTo(null));
+
+                // Single-segment
+                var second = ((IHasPath)decoded.HitObjects[1]).Path;
+
+                Assert.That(second.ControlPoints[0].Position.Value, Is.EqualTo(Vector2.Zero));
+                Assert.That(second.ControlPoints[0].Type.Value, Is.EqualTo(PathType.PerfectCurve));
+                Assert.That(second.ControlPoints[1].Position.Value, Is.EqualTo(new Vector2(161, -244)));
+                Assert.That(second.ControlPoints[1].Type.Value, Is.EqualTo(null));
+                Assert.That(second.ControlPoints[2].Position.Value, Is.EqualTo(new Vector2(376, -3)));
+                Assert.That(second.ControlPoints[2].Type.Value, Is.EqualTo(null));
+
+                // Implicit multi-segment
+                var third = ((IHasPath)decoded.HitObjects[2]).Path;
+
+                Assert.That(third.ControlPoints[0].Position.Value, Is.EqualTo(Vector2.Zero));
+                Assert.That(third.ControlPoints[0].Type.Value, Is.EqualTo(PathType.Bezier));
+                Assert.That(third.ControlPoints[1].Position.Value, Is.EqualTo(new Vector2(0, 192)));
+                Assert.That(third.ControlPoints[1].Type.Value, Is.EqualTo(null));
+                Assert.That(third.ControlPoints[2].Position.Value, Is.EqualTo(new Vector2(224, 192)));
+                Assert.That(third.ControlPoints[2].Type.Value, Is.EqualTo(null));
+
+                Assert.That(third.ControlPoints[3].Position.Value, Is.EqualTo(new Vector2(224, 0)));
+                Assert.That(third.ControlPoints[3].Type.Value, Is.EqualTo(PathType.Bezier));
+                Assert.That(third.ControlPoints[4].Position.Value, Is.EqualTo(new Vector2(224, -192)));
+                Assert.That(third.ControlPoints[4].Type.Value, Is.EqualTo(null));
+                Assert.That(third.ControlPoints[5].Position.Value, Is.EqualTo(new Vector2(480, -192)));
+                Assert.That(third.ControlPoints[5].Type.Value, Is.EqualTo(null));
+                Assert.That(third.ControlPoints[6].Position.Value, Is.EqualTo(new Vector2(480, 0)));
+                Assert.That(third.ControlPoints[6].Type.Value, Is.EqualTo(null));
+            }
+        }
     }
 }

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

@@ -30,7 +30,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
     {
         private static readonly DllResourceStore beatmaps_resource_store = TestResources.GetStore();
 
-        private static IEnumerable<string> allBeatmaps = beatmaps_resource_store.GetAvailableResources().Where(res => res.EndsWith(".osu"));
+        private static IEnumerable<string> allBeatmaps = beatmaps_resource_store.GetAvailableResources().Where(res => res.EndsWith(".osu", StringComparison.Ordinal));
 
         [TestCaseSource(nameof(allBeatmaps))]
         public void TestEncodeDecodeStability(string name)

osu.Game.Tests/NonVisual/CustomDataDirectoryTest.cs

@@ -111,6 +111,7 @@ namespace osu.Game.Tests.NonVisual
 
                     var osu = LoadOsuIntoHost(host);
                     var storage = osu.Dependencies.Get<Storage>();
+                    var osuStorage = storage as MigratableStorage;
 
                     // Store the current storage's path. We'll need to refer to this for assertions in the original directory after the migration completes.
                     string originalDirectory = storage.GetFullPath(".");
@@ -137,13 +138,15 @@ namespace osu.Game.Tests.NonVisual
                     Assert.That(!Directory.Exists(Path.Combine(originalDirectory, "test-nested", "cache")));
                     Assert.That(storage.ExistsDirectory(Path.Combine("test-nested", "cache")));
 
-                    foreach (var file in OsuStorage.IGNORE_FILES)
+                    Assert.That(osuStorage, Is.Not.Null);
+
+                    foreach (var file in osuStorage.IgnoreFiles)
                     {
                         Assert.That(File.Exists(Path.Combine(originalDirectory, file)));
                         Assert.That(storage.Exists(file), Is.False);
                     }
 
-                    foreach (var dir in OsuStorage.IGNORE_DIRECTORIES)
+                    foreach (var dir in osuStorage.IgnoreDirectories)
                     {
                         Assert.That(Directory.Exists(Path.Combine(originalDirectory, dir)));
                         Assert.That(storage.ExistsDirectory(dir), Is.False);

osu.Game.Tests/NonVisual/DifficultyAdjustmentModCombinationsTest.cs

@@ -94,6 +94,52 @@ namespace osu.Game.Tests.NonVisual
             Assert.IsTrue(combinations[2] is ModIncompatibleWithAofA);
         }
 
+        [Test]
+        public void TestMultiModFlattening()
+        {
+            var combinations = new TestLegacyDifficultyCalculator(new ModA(), new MultiMod(new ModB(), new ModC())).CreateDifficultyAdjustmentModCombinations();
+
+            Assert.AreEqual(4, combinations.Length);
+            Assert.IsTrue(combinations[0] is ModNoMod);
+            Assert.IsTrue(combinations[1] is ModA);
+            Assert.IsTrue(combinations[2] is MultiMod);
+            Assert.IsTrue(combinations[3] is MultiMod);
+
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[0] is ModA);
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[1] is ModB);
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[2] is ModC);
+            Assert.IsTrue(((MultiMod)combinations[3]).Mods[0] is ModB);
+            Assert.IsTrue(((MultiMod)combinations[3]).Mods[1] is ModC);
+        }
+
+        [Test]
+        public void TestIncompatibleThroughMultiMod()
+        {
+            var combinations = new TestLegacyDifficultyCalculator(new ModA(), new MultiMod(new ModB(), new ModIncompatibleWithA())).CreateDifficultyAdjustmentModCombinations();
+
+            Assert.AreEqual(3, combinations.Length);
+            Assert.IsTrue(combinations[0] is ModNoMod);
+            Assert.IsTrue(combinations[1] is ModA);
+            Assert.IsTrue(combinations[2] is MultiMod);
+
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[0] is ModB);
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[1] is ModIncompatibleWithA);
+        }
+
+        [Test]
+        public void TestIncompatibleWithSameInstanceViaMultiMod()
+        {
+            var combinations = new TestLegacyDifficultyCalculator(new ModA(), new MultiMod(new ModA(), new ModB())).CreateDifficultyAdjustmentModCombinations();
+
+            Assert.AreEqual(3, combinations.Length);
+            Assert.IsTrue(combinations[0] is ModNoMod);
+            Assert.IsTrue(combinations[1] is ModA);
+            Assert.IsTrue(combinations[2] is MultiMod);
+
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[0] is ModA);
+            Assert.IsTrue(((MultiMod)combinations[2]).Mods[1] is ModB);
+        }
+
         private class ModA : Mod
         {
             public override string Name => nameof(ModA);
@@ -112,6 +158,13 @@ namespace osu.Game.Tests.NonVisual
             public override Type[] IncompatibleMods => new[] { typeof(ModIncompatibleWithAAndB) };
         }
 
+        private class ModC : Mod
+        {
+            public override string Name => nameof(ModC);
+            public override string Acronym => nameof(ModC);
+            public override double ScoreMultiplier => 1;
+        }
+
         private class ModIncompatibleWithA : Mod
         {
             public override string Name => $"Incompatible With {nameof(ModA)}";

osu.Game.Tests/NonVisual/Filtering/FilterMatchingTest.cs

@@ -197,5 +197,22 @@ namespace osu.Game.Tests.NonVisual.Filtering
             carouselItem.Filter(criteria);
             Assert.AreEqual(filtered, carouselItem.Filtered.Value);
         }
+
+        [TestCase("202010", true)]
+        [TestCase("20201010", false)]
+        [TestCase("153", true)]
+        [TestCase("1535", false)]
+        public void TestCriteriaMatchingBeatmapIDs(string query, bool filtered)
+        {
+            var beatmap = getExampleBeatmap();
+            beatmap.OnlineBeatmapID = 20201010;
+            beatmap.BeatmapSet = new BeatmapSetInfo { OnlineBeatmapSetID = 1535 };
+
+            var criteria = new FilterCriteria { SearchText = query };
+            var carouselItem = new CarouselBeatmap(beatmap);
+            carouselItem.Filter(criteria);
+
+            Assert.AreEqual(filtered, carouselItem.Filtered.Value);
+        }
     }
 }

osu.Game.Tests/Resources/multi-segment-slider.osu

@@ -0,0 +1,11 @@
+osu file format v128
+
+[HitObjects]
+// Multi-segment
+63,301,1000,6,0,P|224:57|B|439:298|131:316|322:169|155:194,1,1040,0|0,0:0|0:0,0:0:0:0:
+
+// Single-segment
+63,301,2000,6,0,P|224:57|439:298,1,1040,0|0,0:0|0:0,0:0:0:0:
+
+// Implicit multi-segment
+32,192,3000,6,0,B|32:384|256:384|256:192|256:192|256:0|512:0|512:192,1,800

osu.Game.Tests/Resources/old-skin/skin.ini

@@ -0,0 +1,2 @@
+[General]
+Version: 1.0

osu.Game.Tests/Rulesets/Scoring/ScoreProcessorTest.cs

@@ -53,5 +53,263 @@ namespace osu.Game.Tests.Rulesets.Scoring
 
             Assert.IsTrue(Precision.AlmostEquals(expectedScore, scoreProcessor.TotalScore.Value));
         }
+
+        /// <summary>
+        /// Test to see that all <see cref="HitResult"/>s contribute to score portions in correct amounts.
+        /// </summary>
+        /// <param name="scoringMode">Scoring mode to test.</param>
+        /// <param name="hitResult">The <see cref="HitResult"/> that will be applied to selected hit objects.</param>
+        /// <param name="maxResult">The maximum <see cref="HitResult"/> achievable.</param>
+        /// <param name="expectedScore">Expected score after all objects have been judged, rounded to the nearest integer.</param>
+        /// <remarks>
+        /// This test intentionally misses the 3rd hitobject to achieve lower than 75% accuracy and 50% max combo.
+        /// <para>
+        /// For standardised scoring, <paramref name="expectedScore"/> is calculated using the following formula:
+        /// 1_000_000 * (((3 * <paramref name="hitResult"/>) / (4 * <paramref name="maxResult"/>)) * 30% + (bestCombo / maxCombo) * 70%)
+        /// </para>
+        /// <para>
+        /// For classic scoring, <paramref name="expectedScore"/> is calculated using the following formula:
+        /// <paramref name="hitResult"/> / <paramref name="maxResult"/> * 936
+        /// where 936 is simplified from:
+        /// 75% * 4 * 300 * (1 + 1/25)
+        /// </para>
+        /// </remarks>
+        [TestCase(ScoringMode.Standardised, HitResult.Miss, HitResult.Great, 0)] // (3 * 0) / (4 * 300) * 300_000 + (0 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.Meh, HitResult.Great, 387_500)] // (3 * 50) / (4 * 300) * 300_000 + (2 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.Ok, HitResult.Great, 425_000)] // (3 * 100) / (4 * 300) * 300_000 + (2 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.Good, HitResult.Perfect, 478_571)] // (3 * 200) / (4 * 350) * 300_000 + (2 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.Great, HitResult.Great, 575_000)] // (3 * 300) / (4 * 300) * 300_000 + (2 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.Perfect, HitResult.Perfect, 575_000)] // (3 * 350) / (4 * 350) * 300_000 + (2 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.SmallTickMiss, HitResult.SmallTickHit, 700_000)] // (3 * 0) / (4 * 10) * 300_000 + 700_000 (max combo 0)
+        [TestCase(ScoringMode.Standardised, HitResult.SmallTickHit, HitResult.SmallTickHit, 925_000)] // (3 * 10) / (4 * 10) * 300_000 + 700_000 (max combo 0)
+        [TestCase(ScoringMode.Standardised, HitResult.LargeTickMiss, HitResult.LargeTickHit, 0)] // (3 * 0) / (4 * 30) * 300_000 + (0 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.LargeTickHit, HitResult.LargeTickHit, 575_000)] // (3 * 30) / (4 * 30) * 300_000 + (0 / 4) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.SmallBonus, HitResult.SmallBonus, 700_030)] // 0 * 300_000 + 700_000 (max combo 0) + 3 * 10 (bonus points)
+        [TestCase(ScoringMode.Standardised, HitResult.LargeBonus, HitResult.LargeBonus, 700_150)] // 0 * 300_000 + 700_000 (max combo 0) + 3 * 50 (bonus points)
+        [TestCase(ScoringMode.Classic, HitResult.Miss, HitResult.Great, 0)] // (0 * 4 * 300) * (1 + 0 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.Meh, HitResult.Great, 156)] // (((3 * 50) / (4 * 300)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.Ok, HitResult.Great, 312)] // (((3 * 100) / (4 * 300)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.Good, HitResult.Perfect, 535)] // (((3 * 200) / (4 * 350)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.Great, HitResult.Great, 936)] // (((3 * 300) / (4 * 300)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.Perfect, HitResult.Perfect, 936)] // (((3 * 350) / (4 * 350)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.SmallTickMiss, HitResult.SmallTickHit, 0)] // (0 * 1 * 300) * (1 + 0 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.SmallTickHit, HitResult.SmallTickHit, 225)] // (((3 * 10) / (4 * 10)) * 1 * 300) * (1 + 0 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.LargeTickMiss, HitResult.LargeTickHit, 0)] // (0 * 4 * 300) * (1 + 0 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.LargeTickHit, HitResult.LargeTickHit, 936)] // (((3 * 50) / (4 * 50)) * 4 * 300) * (1 + 1 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.SmallBonus, HitResult.SmallBonus, 30)] // (0 * 1 * 300) * (1 + 0 / 25) + 3 * 10 (bonus points)
+        [TestCase(ScoringMode.Classic, HitResult.LargeBonus, HitResult.LargeBonus, 150)] // (0 * 1 * 300) * (1 + 0 / 25) * 3 * 50 (bonus points)
+        public void TestFourVariousResultsOneMiss(ScoringMode scoringMode, HitResult hitResult, HitResult maxResult, int expectedScore)
+        {
+            var minResult = new TestJudgement(hitResult).MinResult;
+
+            IBeatmap fourObjectBeatmap = new TestBeatmap(new RulesetInfo())
+            {
+                HitObjects = new List<HitObject>(Enumerable.Repeat(new TestHitObject(maxResult), 4))
+            };
+            scoreProcessor.Mode.Value = scoringMode;
+            scoreProcessor.ApplyBeatmap(fourObjectBeatmap);
+
+            for (int i = 0; i < 4; i++)
+            {
+                var judgementResult = new JudgementResult(fourObjectBeatmap.HitObjects[i], new Judgement())
+                {
+                    Type = i == 2 ? minResult : hitResult
+                };
+                scoreProcessor.ApplyResult(judgementResult);
+            }
+
+            Assert.IsTrue(Precision.AlmostEquals(expectedScore, scoreProcessor.TotalScore.Value, 0.5));
+        }
+
+        /// <remarks>
+        /// This test uses a beatmap with four small ticks and one object with the <see cref="Judgement.MaxResult"/> of <see cref="HitResult.Ok"/>.
+        /// Its goal is to ensure that with the <see cref="ScoringMode"/> of <see cref="ScoringMode.Standardised"/>,
+        /// small ticks contribute to the accuracy portion, but not the combo portion.
+        /// In contrast, <see cref="ScoringMode.Classic"/> does not have separate combo and accuracy portion (they are multiplied by each other).
+        /// </remarks>
+        [TestCase(ScoringMode.Standardised, HitResult.SmallTickHit, 978_571)] // (3 * 10 + 100) / (4 * 10 + 100) * 300_000 + (1 / 1) * 700_000
+        [TestCase(ScoringMode.Standardised, HitResult.SmallTickMiss, 914_286)] // (3 * 0 + 100) / (4 * 10 + 100) * 300_000 + (1 / 1) * 700_000
+        [TestCase(ScoringMode.Classic, HitResult.SmallTickHit, 279)] // (((3 * 10 + 100) / (4 * 10 + 100)) * 1 * 300) * (1 + 0 / 25)
+        [TestCase(ScoringMode.Classic, HitResult.SmallTickMiss, 214)] // (((3 * 0 + 100) / (4 * 10 + 100)) * 1 * 300) * (1 + 0 / 25)
+        public void TestSmallTicksAccuracy(ScoringMode scoringMode, HitResult hitResult, int expectedScore)
+        {
+            IEnumerable<HitObject> hitObjects = Enumerable
+                                                .Repeat(new TestHitObject(HitResult.SmallTickHit), 4)
+                                                .Append(new TestHitObject(HitResult.Ok));
+            IBeatmap fiveObjectBeatmap = new TestBeatmap(new RulesetInfo())
+            {
+                HitObjects = hitObjects.ToList()
+            };
+            scoreProcessor.Mode.Value = scoringMode;
+            scoreProcessor.ApplyBeatmap(fiveObjectBeatmap);
+
+            for (int i = 0; i < 4; i++)
+            {
+                var judgementResult = new JudgementResult(fiveObjectBeatmap.HitObjects[i], new Judgement())
+                {
+                    Type = i == 2 ? HitResult.SmallTickMiss : hitResult
+                };
+                scoreProcessor.ApplyResult(judgementResult);
+            }
+
+            var lastJudgementResult = new JudgementResult(fiveObjectBeatmap.HitObjects.Last(), new Judgement())
+            {
+                Type = HitResult.Ok
+            };
+            scoreProcessor.ApplyResult(lastJudgementResult);
+
+            Assert.IsTrue(Precision.AlmostEquals(expectedScore, scoreProcessor.TotalScore.Value, 0.5));
+        }
+
+        [Test]
+        public void TestEmptyBeatmap(
+            [Values(ScoringMode.Standardised, ScoringMode.Classic)]
+            ScoringMode scoringMode)
+        {
+            scoreProcessor.Mode.Value = scoringMode;
+            scoreProcessor.ApplyBeatmap(new TestBeatmap(new RulesetInfo()));
+
+            Assert.IsTrue(Precision.AlmostEquals(0, scoreProcessor.TotalScore.Value));
+        }
+
+        [TestCase(HitResult.IgnoreHit, HitResult.IgnoreMiss)]
+        [TestCase(HitResult.Meh, HitResult.Miss)]
+        [TestCase(HitResult.Ok, HitResult.Miss)]
+        [TestCase(HitResult.Good, HitResult.Miss)]
+        [TestCase(HitResult.Great, HitResult.Miss)]
+        [TestCase(HitResult.Perfect, HitResult.Miss)]
+        [TestCase(HitResult.SmallTickHit, HitResult.SmallTickMiss)]
+        [TestCase(HitResult.LargeTickHit, HitResult.LargeTickMiss)]
+        [TestCase(HitResult.SmallBonus, HitResult.IgnoreMiss)]
+        [TestCase(HitResult.LargeBonus, HitResult.IgnoreMiss)]
+        public void TestMinResults(HitResult hitResult, HitResult expectedMinResult)
+        {
+            Assert.AreEqual(expectedMinResult, new TestJudgement(hitResult).MinResult);
+        }
+
+        [TestCase(HitResult.None, false)]
+        [TestCase(HitResult.IgnoreMiss, false)]
+        [TestCase(HitResult.IgnoreHit, false)]
+        [TestCase(HitResult.Miss, true)]
+        [TestCase(HitResult.Meh, true)]
+        [TestCase(HitResult.Ok, true)]
+        [TestCase(HitResult.Good, true)]
+        [TestCase(HitResult.Great, true)]
+        [TestCase(HitResult.Perfect, true)]
+        [TestCase(HitResult.SmallTickMiss, false)]
+        [TestCase(HitResult.SmallTickHit, false)]
+        [TestCase(HitResult.LargeTickMiss, true)]
+        [TestCase(HitResult.LargeTickHit, true)]
+        [TestCase(HitResult.SmallBonus, false)]
+        [TestCase(HitResult.LargeBonus, false)]
+        public void TestAffectsCombo(HitResult hitResult, bool expectedReturnValue)
+        {
+            Assert.AreEqual(expectedReturnValue, hitResult.AffectsCombo());
+        }
+
+        [TestCase(HitResult.None, false)]
+        [TestCase(HitResult.IgnoreMiss, false)]
+        [TestCase(HitResult.IgnoreHit, false)]
+        [TestCase(HitResult.Miss, true)]
+        [TestCase(HitResult.Meh, true)]
+        [TestCase(HitResult.Ok, true)]
+        [TestCase(HitResult.Good, true)]
+        [TestCase(HitResult.Great, true)]
+        [TestCase(HitResult.Perfect, true)]
+        [TestCase(HitResult.SmallTickMiss, true)]
+        [TestCase(HitResult.SmallTickHit, true)]
+        [TestCase(HitResult.LargeTickMiss, true)]
+        [TestCase(HitResult.LargeTickHit, true)]
+        [TestCase(HitResult.SmallBonus, false)]
+        [TestCase(HitResult.LargeBonus, false)]
+        public void TestAffectsAccuracy(HitResult hitResult, bool expectedReturnValue)
+        {
+            Assert.AreEqual(expectedReturnValue, hitResult.AffectsAccuracy());
+        }
+
+        [TestCase(HitResult.None, false)]
+        [TestCase(HitResult.IgnoreMiss, false)]
+        [TestCase(HitResult.IgnoreHit, false)]
+        [TestCase(HitResult.Miss, false)]
+        [TestCase(HitResult.Meh, false)]
+        [TestCase(HitResult.Ok, false)]
+        [TestCase(HitResult.Good, false)]
+        [TestCase(HitResult.Great, false)]
+        [TestCase(HitResult.Perfect, false)]
+        [TestCase(HitResult.SmallTickMiss, false)]
+        [TestCase(HitResult.SmallTickHit, false)]
+        [TestCase(HitResult.LargeTickMiss, false)]
+        [TestCase(HitResult.LargeTickHit, false)]
+        [TestCase(HitResult.SmallBonus, true)]
+        [TestCase(HitResult.LargeBonus, true)]
+        public void TestIsBonus(HitResult hitResult, bool expectedReturnValue)
+        {
+            Assert.AreEqual(expectedReturnValue, hitResult.IsBonus());
+        }
+
+        [TestCase(HitResult.None, false)]
+        [TestCase(HitResult.IgnoreMiss, false)]
+        [TestCase(HitResult.IgnoreHit, true)]
+        [TestCase(HitResult.Miss, false)]
+        [TestCase(HitResult.Meh, true)]
+        [TestCase(HitResult.Ok, true)]
+        [TestCase(HitResult.Good, true)]
+        [TestCase(HitResult.Great, true)]
+        [TestCase(HitResult.Perfect, true)]
+        [TestCase(HitResult.SmallTickMiss, false)]
+        [TestCase(HitResult.SmallTickHit, true)]
+        [TestCase(HitResult.LargeTickMiss, false)]
+        [TestCase(HitResult.LargeTickHit, true)]
+        [TestCase(HitResult.SmallBonus, true)]
+        [TestCase(HitResult.LargeBonus, true)]
+        public void TestIsHit(HitResult hitResult, bool expectedReturnValue)
+        {
+            Assert.AreEqual(expectedReturnValue, hitResult.IsHit());
+        }
+
+        [TestCase(HitResult.None, false)]
+        [TestCase(HitResult.IgnoreMiss, false)]
+        [TestCase(HitResult.IgnoreHit, false)]
+        [TestCase(HitResult.Miss, true)]
+        [TestCase(HitResult.Meh, true)]
+        [TestCase(HitResult.Ok, true)]
+        [TestCase(HitResult.Good, true)]
+        [TestCase(HitResult.Great, true)]
+        [TestCase(HitResult.Perfect, true)]
+        [TestCase(HitResult.SmallTickMiss, true)]
+        [TestCase(HitResult.SmallTickHit, true)]
+        [TestCase(HitResult.LargeTickMiss, true)]
+        [TestCase(HitResult.LargeTickHit, true)]
+        [TestCase(HitResult.SmallBonus, true)]
+        [TestCase(HitResult.LargeBonus, true)]
+        public void TestIsScorable(HitResult hitResult, bool expectedReturnValue)
+        {
+            Assert.AreEqual(expectedReturnValue, hitResult.IsScorable());
+        }
+
+        private class TestJudgement : Judgement
+        {
+            public override HitResult MaxResult { get; }
+
+            public TestJudgement(HitResult maxResult)
+            {
+                MaxResult = maxResult;
+            }
+        }
+
+        private class TestHitObject : HitObject
+        {
+            private readonly HitResult maxResult;
+
+            public override Judgement CreateJudgement()
+            {
+                return new TestJudgement(maxResult);
+            }
+
+            public TestHitObject(HitResult maxResult)
+            {
+                this.maxResult = maxResult;
+            }
+        }
     }
 }

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

@@ -0,0 +1,47 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.Play.HUD;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneComboCounter : SkinnableTestScene
+    {
+        private IEnumerable<SkinnableComboCounter> comboCounters => CreatedDrawables.OfType<SkinnableComboCounter>();
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("Create combo counters", () => SetContents(() =>
+            {
+                var comboCounter = new SkinnableComboCounter();
+                comboCounter.Current.Value = 1;
+                return comboCounter;
+            }));
+        }
+
+        [Test]
+        public void TestComboCounterIncrementing()
+        {
+            AddRepeatStep("increase combo", () =>
+            {
+                foreach (var counter in comboCounters)
+                    counter.Current.Value++;
+            }, 10);
+
+            AddStep("reset combo", () =>
+            {
+                foreach (var counter in comboCounters)
+                    counter.Current.Value = 0;
+            });
+        }
+    }
+}

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

@@ -26,7 +26,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddStep("get variables", () =>
             {
-                gameplayClock = Player.ChildrenOfType<FrameStabilityContainer>().First().GameplayClock;
+                gameplayClock = Player.ChildrenOfType<FrameStabilityContainer>().First();
                 slider = Player.ChildrenOfType<DrawableSlider>().OrderBy(s => s.HitObject.StartTime).First();
                 samples = slider.ChildrenOfType<DrawableSample>().ToArray();
             });

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

@@ -2,23 +2,29 @@
 // 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.Allocation;
+using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Configuration;
+using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Play;
 using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
-    public class TestSceneHUDOverlay : OsuManualInputManagerTestScene
+    public class TestSceneHUDOverlay : SkinnableTestScene
     {
         private HUDOverlay hudOverlay;
 
+        private IEnumerable<HUDOverlay> hudOverlays => CreatedDrawables.OfType<HUDOverlay>();
+
         // best way to check without exposing.
         private Drawable hideTarget => hudOverlay.KeyCounter;
         private FillFlowContainer<KeyCounter> keyCounterFlow => hudOverlay.KeyCounter.ChildrenOfType<FillFlowContainer<KeyCounter>>().First();
@@ -26,6 +32,24 @@ namespace osu.Game.Tests.Visual.Gameplay
         [Resolved]
         private OsuConfigManager config { get; set; }
 
+        [Test]
+        public void TestComboCounterIncrementing()
+        {
+            createNew();
+
+            AddRepeatStep("increase combo", () =>
+            {
+                foreach (var hud in hudOverlays)
+                    hud.ComboCounter.Current.Value++;
+            }, 10);
+
+            AddStep("reset combo", () =>
+            {
+                foreach (var hud in hudOverlays)
+                    hud.ComboCounter.Current.Value = 0;
+            });
+        }
+
         [Test]
         public void TestShownByDefault()
         {
@@ -45,7 +69,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             createNew(h => h.OnLoadComplete += _ => initialAlpha = hideTarget.Alpha);
             AddUntilStep("wait for load", () => hudOverlay.IsAlive);
-            AddAssert("initial alpha was less than 1", () => initialAlpha != null && initialAlpha < 1);
+            AddAssert("initial alpha was less than 1", () => initialAlpha < 1);
         }
 
         [Test]
@@ -53,7 +77,7 @@ namespace osu.Game.Tests.Visual.Gameplay
         {
             createNew();
 
-            AddStep("set showhud false", () => hudOverlay.ShowHud.Value = false);
+            AddStep("set showhud false", () => hudOverlays.ForEach(h => h.ShowHud.Value = false));
 
             AddUntilStep("hidetarget is hidden", () => !hideTarget.IsPresent);
             AddAssert("pause button is still visible", () => hudOverlay.HoldToQuit.IsPresent);
@@ -65,17 +89,17 @@ namespace osu.Game.Tests.Visual.Gameplay
         [Test]
         public void TestExternalHideDoesntAffectConfig()
         {
-            bool originalConfigValue = false;
+            HUDVisibilityMode originalConfigValue = HUDVisibilityMode.HideDuringBreaks;
 
             createNew();
 
-            AddStep("get original config value", () => originalConfigValue = config.Get<bool>(OsuSetting.ShowInterface));
+            AddStep("get original config value", () => originalConfigValue = config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
 
             AddStep("set showhud false", () => hudOverlay.ShowHud.Value = false);
-            AddAssert("config unchanged", () => originalConfigValue == config.Get<bool>(OsuSetting.ShowInterface));
+            AddAssert("config unchanged", () => originalConfigValue == config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
 
             AddStep("set showhud true", () => hudOverlay.ShowHud.Value = true);
-            AddAssert("config unchanged", () => originalConfigValue == config.Get<bool>(OsuSetting.ShowInterface));
+            AddAssert("config unchanged", () => originalConfigValue == config.Get<HUDVisibilityMode>(OsuSetting.HUDVisibilityMode));
         }
 
         [Test]
@@ -89,14 +113,14 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddStep("set keycounter visible false", () =>
             {
                 config.Set<bool>(OsuSetting.KeyOverlay, false);
-                hudOverlay.KeyCounter.AlwaysVisible.Value = false;
+                hudOverlays.ForEach(h => h.KeyCounter.AlwaysVisible.Value = false);
             });
 
-            AddStep("set showhud false", () => hudOverlay.ShowHud.Value = false);
+            AddStep("set showhud false", () => hudOverlays.ForEach(h => h.ShowHud.Value = false));
             AddUntilStep("hidetarget is hidden", () => !hideTarget.IsPresent);
             AddAssert("key counters hidden", () => !keyCounterFlow.IsPresent);
 
-            AddStep("set showhud true", () => hudOverlay.ShowHud.Value = true);
+            AddStep("set showhud true", () => hudOverlays.ForEach(h => h.ShowHud.Value = true));
             AddUntilStep("hidetarget is visible", () => hideTarget.IsPresent);
             AddAssert("key counters still hidden", () => !keyCounterFlow.IsPresent);
 
@@ -107,13 +131,22 @@ namespace osu.Game.Tests.Visual.Gameplay
         {
             AddStep("create overlay", () =>
             {
-                Child = hudOverlay = new HUDOverlay(null, null, null, Array.Empty<Mod>());
+                SetContents(() =>
+                {
+                    hudOverlay = new HUDOverlay(null, null, null, Array.Empty<Mod>());
 
-                // Add any key just to display the key counter visually.
+                    // Add any key just to display the key counter visually.
-                hudOverlay.KeyCounter.Add(new KeyCounterKeyboard(Key.Space));
+                    hudOverlay.KeyCounter.Add(new KeyCounterKeyboard(Key.Space));
 
-                action?.Invoke(hudOverlay);
+                    hudOverlay.ComboCounter.Current.Value = 1;
+
+                    action?.Invoke(hudOverlay);
+
+                    return hudOverlay;
+                });
             });
         }
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
     }
 }

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

@@ -22,8 +22,10 @@ namespace osu.Game.Tests.Visual.Gameplay
     {
         private BarHitErrorMeter barMeter;
         private BarHitErrorMeter barMeter2;
+        private BarHitErrorMeter barMeter3;
         private ColourHitErrorMeter colourMeter;
         private ColourHitErrorMeter colourMeter2;
+        private ColourHitErrorMeter colourMeter3;
         private HitWindows hitWindows;
 
         public TestSceneHitErrorMeter()
@@ -115,6 +117,13 @@ namespace osu.Game.Tests.Visual.Gameplay
                 Origin = Anchor.CentreLeft,
             });
 
+            Add(barMeter3 = new BarHitErrorMeter(hitWindows, true)
+            {
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.CentreLeft,
+                Rotation = 270,
+            });
+
             Add(colourMeter = new ColourHitErrorMeter(hitWindows)
             {
                 Anchor = Anchor.CentreRight,
@@ -128,6 +137,14 @@ namespace osu.Game.Tests.Visual.Gameplay
                 Origin = Anchor.CentreLeft,
                 Margin = new MarginPadding { Left = 50 }
             });
+
+            Add(colourMeter3 = new ColourHitErrorMeter(hitWindows)
+            {
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.CentreLeft,
+                Rotation = 270,
+                Margin = new MarginPadding { Left = 50 }
+            });
         }
 
         private void newJudgement(double offset = 0)
@@ -140,8 +157,10 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             barMeter.OnNewJudgement(judgement);
             barMeter2.OnNewJudgement(judgement);
+            barMeter3.OnNewJudgement(judgement);
             colourMeter.OnNewJudgement(judgement);
             colourMeter2.OnNewJudgement(judgement);
+            colourMeter3.OnNewJudgement(judgement);
         }
     }
 }

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

@@ -13,6 +13,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Framework.Screens;
+using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
@@ -35,6 +36,8 @@ namespace osu.Game.Tests.Visual.Gameplay
         private TestPlayerLoaderContainer container;
         private TestPlayer player;
 
+        private bool epilepsyWarning;
+
         [Resolved]
         private AudioManager audioManager { get; set; }
 
@@ -59,6 +62,7 @@ namespace osu.Game.Tests.Visual.Gameplay
             beforeLoadAction?.Invoke();
 
             Beatmap.Value = CreateWorkingBeatmap(new OsuRuleset().RulesetInfo);
+            Beatmap.Value.BeatmapInfo.EpilepsyWarning = epilepsyWarning;
 
             foreach (var mod in SelectedMods.Value.OfType<IApplicableToTrack>())
                 mod.ApplyToTrack(Beatmap.Value.Track);
@@ -251,6 +255,18 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddUntilStep("wait for player load", () => player.IsLoaded);
         }
 
+        [TestCase(true)]
+        [TestCase(false)]
+        public void TestEpilepsyWarning(bool warning)
+        {
+            AddStep("change epilepsy warning", () => epilepsyWarning = warning);
+            AddStep("load dummy beatmap", () => ResetPlayer(false));
+
+            AddUntilStep("wait for current", () => loader.IsCurrentScreen());
+
+            AddAssert($"epilepsy warning {(warning ? "present" : "absent")}", () => this.ChildrenOfType<EpilepsyWarning>().Any() == warning);
+        }
+
         private class TestPlayerLoaderContainer : Container
         {
             [Cached]

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

@@ -1,68 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using NUnit.Framework;
-using osu.Framework.Graphics;
-using osu.Game.Graphics.UserInterface;
-using osu.Game.Screens.Play.HUD;
-using osuTK;
-
-namespace osu.Game.Tests.Visual.Gameplay
-{
-    [TestFixture]
-    public class TestSceneScoreCounter : OsuTestScene
-    {
-        public TestSceneScoreCounter()
-        {
-            int numerator = 0, denominator = 0;
-
-            ScoreCounter score = new ScoreCounter(7)
-            {
-                Origin = Anchor.TopRight,
-                Anchor = Anchor.TopRight,
-                Margin = new MarginPadding(20),
-            };
-            Add(score);
-
-            ComboCounter comboCounter = new StandardComboCounter
-            {
-                Origin = Anchor.BottomLeft,
-                Anchor = Anchor.BottomLeft,
-                Margin = new MarginPadding(10),
-            };
-            Add(comboCounter);
-
-            PercentageCounter accuracyCounter = new PercentageCounter
-            {
-                Origin = Anchor.TopRight,
-                Anchor = Anchor.TopRight,
-                Position = new Vector2(-20, 60),
-            };
-            Add(accuracyCounter);
-
-            AddStep(@"Reset all", delegate
-            {
-                score.Current.Value = 0;
-                comboCounter.Current.Value = 0;
-                numerator = denominator = 0;
-                accuracyCounter.SetFraction(0, 0);
-            });
-
-            AddStep(@"Hit! :D", delegate
-            {
-                score.Current.Value += 300 + (ulong)(300.0 * (comboCounter.Current.Value > 0 ? comboCounter.Current.Value - 1 : 0) / 25.0);
-                comboCounter.Increment();
-                numerator++;
-                denominator++;
-                accuracyCounter.SetFraction(numerator, denominator);
-            });
-
-            AddStep(@"miss...", delegate
-            {
-                comboCounter.Current.Value = 0;
-                denominator++;
-                accuracyCounter.SetFraction(numerator, denominator);
-            });
-        }
-    }
-}

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

@@ -0,0 +1,49 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.Play.HUD;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneSkinnableAccuracyCounter : SkinnableTestScene
+    {
+        private IEnumerable<SkinnableAccuracyCounter> accuracyCounters => CreatedDrawables.OfType<SkinnableAccuracyCounter>();
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("Create combo counters", () => SetContents(() =>
+            {
+                var accuracyCounter = new SkinnableAccuracyCounter();
+
+                accuracyCounter.Current.Value = 1;
+
+                return accuracyCounter;
+            }));
+        }
+
+        [Test]
+        public void TestChangingAccuracy()
+        {
+            AddStep(@"Reset all", delegate
+            {
+                foreach (var s in accuracyCounters)
+                    s.Current.Value = 1;
+            });
+
+            AddStep(@"Hit! :D", delegate
+            {
+                foreach (var s in accuracyCounters)
+                    s.Current.Value -= 0.023f;
+            });
+        }
+    }
+}

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

@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Osu.Judgements;
+using osu.Game.Screens.Play;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneSkinnableHealthDisplay : SkinnableTestScene
+    {
+        private IEnumerable<SkinnableHealthDisplay> healthDisplays => CreatedDrawables.OfType<SkinnableHealthDisplay>();
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("Create health displays", () =>
+            {
+                SetContents(() => new SkinnableHealthDisplay());
+            });
+            AddStep(@"Reset all", delegate
+            {
+                foreach (var s in healthDisplays)
+                    s.Current.Value = 1;
+            });
+        }
+
+        [Test]
+        public void TestHealthDisplayIncrementing()
+        {
+            AddRepeatStep(@"decrease hp", delegate
+            {
+                foreach (var healthDisplay in healthDisplays)
+                    healthDisplay.Current.Value -= 0.08f;
+            }, 10);
+
+            AddRepeatStep(@"increase hp without flash", delegate
+            {
+                foreach (var healthDisplay in healthDisplays)
+                    healthDisplay.Current.Value += 0.1f;
+            }, 3);
+
+            AddRepeatStep(@"increase hp with flash", delegate
+            {
+                foreach (var healthDisplay in healthDisplays)
+                {
+                    healthDisplay.Current.Value += 0.1f;
+                    healthDisplay.Flash(new JudgementResult(null, new OsuJudgement()));
+                }
+            }, 3);
+        }
+    }
+}

osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableScoreCounter.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.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.Play.HUD;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneSkinnableScoreCounter : SkinnableTestScene
+    {
+        private IEnumerable<SkinnableScoreCounter> scoreCounters => CreatedDrawables.OfType<SkinnableScoreCounter>();
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("Create combo counters", () => SetContents(() =>
+            {
+                var comboCounter = new SkinnableScoreCounter();
+                comboCounter.Current.Value = 1;
+                return comboCounter;
+            }));
+        }
+
+        [Test]
+        public void TestScoreCounterIncrementing()
+        {
+            AddStep(@"Reset all", delegate
+            {
+                foreach (var s in scoreCounters)
+                    s.Current.Value = 0;
+            });
+
+            AddStep(@"Hit! :D", delegate
+            {
+                foreach (var s in scoreCounters)
+                    s.Current.Value += 300;
+            });
+        }
+
+        [Test]
+        public void TestVeryLargeScore()
+        {
+            AddStep("set large score", () => scoreCounters.ForEach(counter => counter.Current.Value = 1_000_000_000));
+        }
+    }
+}

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

@@ -13,7 +13,6 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.OpenGL.Textures;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Testing;
-using osu.Framework.Timing;
 using osu.Game.Audio;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
@@ -22,27 +21,24 @@ namespace osu.Game.Tests.Visual.Gameplay
 {
     public class TestSceneSkinnableSound : OsuTestScene
     {
-        [Cached(typeof(ISamplePlaybackDisabler))]
-        private GameplayClock gameplayClock = new GameplayClock(new FramedClock());
-
         private TestSkinSourceContainer skinSource;
         private PausableSkinnableSound skinnableSound;
 
         [SetUp]
-        public void SetUp() => Schedule(() =>
+        public void SetUpSteps()
         {
-            gameplayClock.IsPaused.Value = false;
+            AddStep("setup hierarchy", () =>
-
-            Children = new Drawable[]
             {
-                skinSource = new TestSkinSourceContainer
+                Children = new Drawable[]
                 {
-                    Clock = gameplayClock,
+                    skinSource = new TestSkinSourceContainer
-                    RelativeSizeAxes = Axes.Both,
+                    {
-                    Child = skinnableSound = new PausableSkinnableSound(new SampleInfo("normal-sliderslide"))
+                        RelativeSizeAxes = Axes.Both,
-                },
+                        Child = skinnableSound = new PausableSkinnableSound(new SampleInfo("normal-sliderslide"))
-            };
+                    },
-        });
+                };
+            });
+        }
 
         [Test]
         public void TestStoppedSoundDoesntResumeAfterPause()
@@ -62,8 +58,9 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddUntilStep("wait for sample to stop playing", () => !sample.Playing);
 
-            AddStep("pause gameplay clock", () => gameplayClock.IsPaused.Value = true);
+            AddStep("disable sample playback", () => skinSource.SamplePlaybackDisabled.Value = true);
-            AddStep("resume gameplay clock", () => gameplayClock.IsPaused.Value = false);
+
+            AddStep("enable sample playback", () => skinSource.SamplePlaybackDisabled.Value = false);
 
             AddWaitStep("wait a bit", 5);
             AddAssert("sample not playing", () => !sample.Playing);
@@ -82,8 +79,11 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddUntilStep("wait for sample to start playing", () => sample.Playing);
 
-            AddStep("pause gameplay clock", () => gameplayClock.IsPaused.Value = true);
+            AddStep("disable sample playback", () => skinSource.SamplePlaybackDisabled.Value = true);
             AddUntilStep("wait for sample to stop playing", () => !sample.Playing);
+
+            AddStep("enable sample playback", () => skinSource.SamplePlaybackDisabled.Value = false);
+            AddUntilStep("wait for sample to start playing", () => sample.Playing);
         }
 
         [Test]
@@ -98,10 +98,11 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddAssert("sample playing", () => sample.Playing);
 
-            AddStep("pause gameplay clock", () => gameplayClock.IsPaused.Value = true);
+            AddStep("disable sample playback", () => skinSource.SamplePlaybackDisabled.Value = true);
-            AddUntilStep("wait for sample to stop playing", () => !sample.Playing);
 
-            AddStep("resume gameplay clock", () => gameplayClock.IsPaused.Value = false);
+            AddUntilStep("sample not playing", () => !sample.Playing);
+
+            AddStep("enable sample playback", () => skinSource.SamplePlaybackDisabled.Value = false);
 
             AddAssert("sample not playing", () => !sample.Playing);
             AddAssert("sample not playing", () => !sample.Playing);
@@ -120,7 +121,7 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             AddAssert("sample playing", () => sample.Playing);
 
-            AddStep("pause gameplay clock", () => gameplayClock.IsPaused.Value = true);
+            AddStep("disable sample playback", () => skinSource.SamplePlaybackDisabled.Value = true);
             AddUntilStep("wait for sample to stop playing", () => !sample.Playing);
 
             AddStep("trigger skin change", () => skinSource.TriggerSourceChanged());
@@ -133,20 +134,25 @@ namespace osu.Game.Tests.Visual.Gameplay
             });
 
             AddAssert("new sample stopped", () => !sample.Playing);
-            AddStep("resume gameplay clock", () => gameplayClock.IsPaused.Value = false);
+            AddStep("enable sample playback", () => skinSource.SamplePlaybackDisabled.Value = false);
 
             AddWaitStep("wait a bit", 5);
             AddAssert("new sample not played", () => !sample.Playing);
         }
 
         [Cached(typeof(ISkinSource))]
-        private class TestSkinSourceContainer : Container, ISkinSource
+        [Cached(typeof(ISamplePlaybackDisabler))]
+        private class TestSkinSourceContainer : Container, ISkinSource, ISamplePlaybackDisabler
         {
             [Resolved]
             private ISkinSource source { get; set; }
 
             public event Action SourceChanged;
 
+            public Bindable<bool> SamplePlaybackDisabled { get; } = new Bindable<bool>();
+
+            IBindable<bool> ISamplePlaybackDisabler.SamplePlaybackDisabled => SamplePlaybackDisabled;
+
             public Drawable GetDrawableComponent(ISkinComponent component) => source?.GetDrawableComponent(component);
             public Texture GetTexture(string componentName, WrapMode wrapModeS, WrapMode wrapModeT) => source?.GetTexture(componentName, wrapModeS, wrapModeT);
             public SampleChannel GetSample(ISampleInfo sampleInfo) => source?.GetSample(sampleInfo);

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

@@ -11,6 +11,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Configuration;
 using osu.Game.Rulesets;
@@ -40,6 +41,12 @@ namespace osu.Game.Tests.Visual.SongSelect
             this.rulesets = rulesets;
         }
 
+        [Test]
+        public void TestManyPanels()
+        {
+            loadBeatmaps(count: 5000, randomDifficulties: true);
+        }
+
         [Test]
         public void TestKeyRepeat()
         {
@@ -394,7 +401,7 @@ namespace osu.Game.Tests.Visual.SongSelect
             AddStep("Sort by author", () => carousel.Filter(new FilterCriteria { Sort = SortMode.Author }, false));
             AddAssert("Check zzzzz is at bottom", () => carousel.BeatmapSets.Last().Metadata.AuthorString == "zzzzz");
             AddStep("Sort by artist", () => carousel.Filter(new FilterCriteria { Sort = SortMode.Artist }, false));
-            AddAssert($"Check #{set_count} is at bottom", () => carousel.BeatmapSets.Last().Metadata.Title.EndsWith($"#{set_count}!"));
+            AddAssert($"Check #{set_count} is at bottom", () => carousel.BeatmapSets.Last().Metadata.Title.EndsWith($"#{set_count}!", StringComparison.Ordinal));
         }
 
         [Test]
@@ -707,21 +714,22 @@ namespace osu.Game.Tests.Visual.SongSelect
             checkVisibleItemCount(true, 15);
         }
 
-        private void loadBeatmaps(List<BeatmapSetInfo> beatmapSets = null, Func<FilterCriteria> initialCriteria = null, Action<BeatmapCarousel> carouselAdjust = null)
+        private void loadBeatmaps(List<BeatmapSetInfo> beatmapSets = null, Func<FilterCriteria> initialCriteria = null, Action<BeatmapCarousel> carouselAdjust = null, int? count = null, bool randomDifficulties = false)
         {
-            createCarousel(carouselAdjust);
-
-            if (beatmapSets == null)
-            {
-                beatmapSets = new List<BeatmapSetInfo>();
-
-                for (int i = 1; i <= set_count; i++)
-                    beatmapSets.Add(createTestBeatmapSet(i));
-            }
-
             bool changed = false;
-            AddStep($"Load {(beatmapSets.Count > 0 ? beatmapSets.Count.ToString() : "some")} beatmaps", () =>
+
+            createCarousel(c =>
             {
+                carouselAdjust?.Invoke(c);
+
+                if (beatmapSets == null)
+                {
+                    beatmapSets = new List<BeatmapSetInfo>();
+
+                    for (int i = 1; i <= (count ?? set_count); i++)
+                        beatmapSets.Add(createTestBeatmapSet(i, randomDifficulties));
+                }
+
                 carousel.Filter(initialCriteria?.Invoke() ?? new FilterCriteria());
                 carousel.BeatmapSetsChanged = () => changed = true;
                 carousel.BeatmapSets = beatmapSets;
@@ -807,7 +815,7 @@ namespace osu.Game.Tests.Visual.SongSelect
 
         private bool selectedBeatmapVisible()
         {
-            var currentlySelected = carousel.Items.Find(s => s.Item is CarouselBeatmap && s.Item.State.Value == CarouselItemState.Selected);
+            var currentlySelected = carousel.Items.FirstOrDefault(s => s.Item is CarouselBeatmap && s.Item.State.Value == CarouselItemState.Selected);
             if (currentlySelected == null)
                 return true;
 
@@ -820,7 +828,7 @@ namespace osu.Game.Tests.Visual.SongSelect
             AddAssert("Selection is visible", selectedBeatmapVisible);
         }
 
-        private BeatmapSetInfo createTestBeatmapSet(int id)
+        private BeatmapSetInfo createTestBeatmapSet(int id, bool randomDifficultyCount = false)
         {
             return new BeatmapSetInfo
             {
@@ -834,42 +842,37 @@ namespace osu.Game.Tests.Visual.SongSelect
                     Title = $"test set #{id}!",
                     AuthorString = string.Concat(Enumerable.Repeat((char)('z' - Math.Min(25, id - 1)), 5))
                 },
-                Beatmaps = new List<BeatmapInfo>(new[]
+                Beatmaps = getBeatmaps(randomDifficultyCount ? RNG.Next(1, 20) : 3).ToList()
-                {
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = id * 10,
-                        Version = "Normal",
-                        StarDifficulty = 2,
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 3.5f,
-                        }
-                    },
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = id * 10 + 1,
-                        Version = "Hard",
-                        StarDifficulty = 5,
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 5,
-                        }
-                    },
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = id * 10 + 2,
-                        Version = "Insane",
-                        StarDifficulty = 6,
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 7,
-                        }
-                    },
-                }),
             };
         }
 
+        private IEnumerable<BeatmapInfo> getBeatmaps(int count)
+        {
+            int id = 0;
+
+            for (int i = 0; i < count; i++)
+            {
+                float diff = (float)i / count * 10;
+
+                string version = "Normal";
+                if (diff > 6.6)
+                    version = "Insane";
+                else if (diff > 3.3)
+                    version = "Hard";
+
+                yield return new BeatmapInfo
+                {
+                    OnlineBeatmapID = id++ * 10,
+                    Version = version,
+                    StarDifficulty = diff,
+                    BaseDifficulty = new BeatmapDifficulty
+                    {
+                        OverallDifficulty = diff,
+                    }
+                };
+            }
+        }
+
         private BeatmapSetInfo createTestBeatmapSetWithManyDifficulties(int id)
         {
             var toReturn = new BeatmapSetInfo
@@ -908,10 +911,25 @@ namespace osu.Game.Tests.Visual.SongSelect
 
         private class TestBeatmapCarousel : BeatmapCarousel
         {
-            public new List<DrawableCarouselItem> Items => base.Items;
-
             public bool PendingFilterTask => PendingFilter != null;
 
+            public IEnumerable<DrawableCarouselItem> Items
+            {
+                get
+                {
+                    foreach (var item in ScrollableContent)
+                    {
+                        yield return item;
+
+                        if (item is DrawableCarouselBeatmapSet set)
+                        {
+                            foreach (var difficulty in set.DrawableBeatmaps)
+                                yield return difficulty;
+                        }
+                    }
+                }
+            }
+
             protected override IEnumerable<BeatmapSetInfo> GetLoadableBeatmaps() => Enumerable.Empty<BeatmapSetInfo>();
         }
     }

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

@@ -507,7 +507,7 @@ namespace osu.Game.Tests.Visual.SongSelect
                 var selectedPanel = songSelect.Carousel.ChildrenOfType<DrawableCarouselBeatmapSet>().First(s => s.Item.State.Value == CarouselItemState.Selected);
 
                 // special case for converts checked here.
-                return selectedPanel.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableDifficultyIcon>().All(i =>
+                return selectedPanel.ChildrenOfType<FilterableDifficultyIcon>().All(i =>
                     i.IsFiltered || i.Item.Beatmap.Ruleset.ID == targetRuleset || i.Item.Beatmap.Ruleset.ID == 0);
             });
 
@@ -606,10 +606,10 @@ namespace osu.Game.Tests.Visual.SongSelect
                 set = songSelect.Carousel.ChildrenOfType<DrawableCarouselBeatmapSet>().First();
             });
 
-            DrawableCarouselBeatmapSet.FilterableDifficultyIcon difficultyIcon = null;
+            FilterableDifficultyIcon difficultyIcon = null;
             AddStep("Find an icon", () =>
             {
-                difficultyIcon = set.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableDifficultyIcon>()
+                difficultyIcon = set.ChildrenOfType<FilterableDifficultyIcon>()
                                     .First(icon => getDifficultyIconIndex(set, icon) != getCurrentBeatmapIndex());
             });
 
@@ -634,13 +634,13 @@ namespace osu.Game.Tests.Visual.SongSelect
             }));
 
             BeatmapInfo filteredBeatmap = null;
-            DrawableCarouselBeatmapSet.FilterableDifficultyIcon filteredIcon = null;
+            FilterableDifficultyIcon filteredIcon = null;
 
             AddStep("Get filtered icon", () =>
             {
                 filteredBeatmap = songSelect.Carousel.SelectedBeatmapSet.Beatmaps.First(b => b.BPM < maxBPM);
                 int filteredBeatmapIndex = getBeatmapIndex(filteredBeatmap.BeatmapSet, filteredBeatmap);
-                filteredIcon = set.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableDifficultyIcon>().ElementAt(filteredBeatmapIndex);
+                filteredIcon = set.ChildrenOfType<FilterableDifficultyIcon>().ElementAt(filteredBeatmapIndex);
             });
 
             AddStep("Click on a filtered difficulty", () =>
@@ -674,10 +674,10 @@ namespace osu.Game.Tests.Visual.SongSelect
                 return set != null;
             });
 
-            DrawableCarouselBeatmapSet.FilterableDifficultyIcon difficultyIcon = null;
+            FilterableDifficultyIcon difficultyIcon = null;
             AddStep("Find an icon for different ruleset", () =>
             {
-                difficultyIcon = set.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableDifficultyIcon>()
+                difficultyIcon = set.ChildrenOfType<FilterableDifficultyIcon>()
                                     .First(icon => icon.Item.Beatmap.Ruleset.ID == 3);
             });
 
@@ -725,10 +725,10 @@ namespace osu.Game.Tests.Visual.SongSelect
                 return set != null;
             });
 
-            DrawableCarouselBeatmapSet.FilterableGroupedDifficultyIcon groupIcon = null;
+            FilterableGroupedDifficultyIcon groupIcon = null;
             AddStep("Find group icon for different ruleset", () =>
             {
-                groupIcon = set.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableGroupedDifficultyIcon>()
+                groupIcon = set.ChildrenOfType<FilterableGroupedDifficultyIcon>()
                                .First(icon => icon.Items.First().Beatmap.Ruleset.ID == 3);
             });
 
@@ -821,9 +821,9 @@ namespace osu.Game.Tests.Visual.SongSelect
 
         private int getCurrentBeatmapIndex() => getBeatmapIndex(songSelect.Carousel.SelectedBeatmapSet, songSelect.Carousel.SelectedBeatmap);
 
-        private int getDifficultyIconIndex(DrawableCarouselBeatmapSet set, DrawableCarouselBeatmapSet.FilterableDifficultyIcon icon)
+        private int getDifficultyIconIndex(DrawableCarouselBeatmapSet set, FilterableDifficultyIcon icon)
         {
-            return set.ChildrenOfType<DrawableCarouselBeatmapSet.FilterableDifficultyIcon>().ToList().FindIndex(i => i == icon);
+            return set.ChildrenOfType<FilterableDifficultyIcon>().ToList().FindIndex(i => i == icon);
         }
 
         private void addRulesetImportStep(int id) => AddStep($"import test map for ruleset {id}", () => importForRuleset(id));

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

@@ -9,6 +9,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
+using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
@@ -18,10 +19,11 @@ using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.UI;
+using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
-    public class TestSceneModSettings : OsuTestScene
+    public class TestSceneModSettings : OsuManualInputManagerTestScene
     {
         private TestModSelectOverlay modSelect;
 
@@ -95,6 +97,41 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("copy has original value", () => Precision.AlmostEquals(1.5, copy.SpeedChange.Value));
         }
 
+        [Test]
+        public void TestMultiModSettingsUnboundWhenCopied()
+        {
+            MultiMod original = null;
+            MultiMod copy = null;
+
+            AddStep("create mods", () =>
+            {
+                original = new MultiMod(new OsuModDoubleTime());
+                copy = (MultiMod)original.CreateCopy();
+            });
+
+            AddStep("change property", () => ((OsuModDoubleTime)original.Mods[0]).SpeedChange.Value = 2);
+
+            AddAssert("original has new value", () => Precision.AlmostEquals(2.0, ((OsuModDoubleTime)original.Mods[0]).SpeedChange.Value));
+            AddAssert("copy has original value", () => Precision.AlmostEquals(1.5, ((OsuModDoubleTime)copy.Mods[0]).SpeedChange.Value));
+        }
+
+        [Test]
+        public void TestCustomisationMenuNoClickthrough()
+        {
+            createModSelect();
+            openModSelect();
+
+            AddStep("change mod settings menu width to full screen", () => modSelect.SetModSettingsWidth(1.0f));
+            AddStep("select cm2", () => modSelect.SelectMod(testCustomisableAutoOpenMod));
+            AddAssert("Customisation opened", () => modSelect.ModSettingsContainer.Alpha == 1);
+            AddStep("hover over mod behind settings menu", () => InputManager.MoveMouseTo(modSelect.GetModButton(testCustomisableMod)));
+            AddAssert("Mod is not considered hovered over", () => !modSelect.GetModButton(testCustomisableMod).IsHovered);
+            AddStep("left click mod", () => InputManager.Click(MouseButton.Left));
+            AddAssert("only cm2 is active", () => SelectedMods.Value.Count == 1);
+            AddStep("right click mod", () => InputManager.Click(MouseButton.Right));
+            AddAssert("only cm2 is active", () => SelectedMods.Value.Count == 1);
+        }
+
         private void createModSelect()
         {
             AddStep("create mod select", () =>
@@ -121,9 +158,16 @@ namespace osu.Game.Tests.Visual.UserInterface
 
             public bool ButtonsLoaded => ModSectionsContainer.Children.All(c => c.ModIconsLoaded);
 
+            public ModButton GetModButton(Mod mod)
+            {
+                return ModSectionsContainer.ChildrenOfType<ModButton>().Single(b => b.Mods.Any(m => m.GetType() == mod.GetType()));
+            }
+
             public void SelectMod(Mod mod) =>
-                ModSectionsContainer.Children.Single(s => s.ModType == mod.Type)
+                GetModButton(mod).SelectNext(1);
-                                    .ButtonsContainer.OfType<ModButton>().Single(b => b.Mods.Any(m => m.GetType() == mod.GetType())).SelectNext(1);
+
+            public void SetModSettingsWidth(float newWidth) =>
+                ModSettingsContainer.Width = newWidth;
         }
 
         public class TestRulesetInfo : RulesetInfo

osu.Game.Tests/WaveformTestBeatmap.cs

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.IO;
 using System.Linq;
 using osu.Framework.Audio;
@@ -59,7 +60,7 @@ namespace osu.Game.Tests
             get
             {
                 using (var reader = getZipReader())
-                    return reader.Filenames.First(f => f.EndsWith(".mp3"));
+                    return reader.Filenames.First(f => f.EndsWith(".mp3", StringComparison.Ordinal));
             }
         }
 
@@ -73,7 +74,7 @@ namespace osu.Game.Tests
             protected override Beatmap CreateBeatmap()
             {
                 using (var reader = getZipReader())
-                using (var beatmapStream = reader.GetStream(reader.Filenames.First(f => f.EndsWith(".osu"))))
+                using (var beatmapStream = reader.GetStream(reader.Filenames.First(f => f.EndsWith(".osu", StringComparison.Ordinal))))
                 using (var beatmapReader = new LineBufferedReader(beatmapStream))
                     return Decoder.GetDecoder<Beatmap>(beatmapReader).Decode(beatmapReader);
             }

osu.Game.Tournament.Tests/NonVisual/CustomTourneyDirectoryTest.cs

@@ -0,0 +1,169 @@
+// 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.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Platform;
+using osu.Game.Tournament.Configuration;
+using osu.Game.Tests;
+
+namespace osu.Game.Tournament.Tests.NonVisual
+{
+    [TestFixture]
+    public class CustomTourneyDirectoryTest
+    {
+        [Test]
+        public void TestDefaultDirectory()
+        {
+            using (HeadlessGameHost host = new CleanRunHeadlessGameHost())
+            {
+                try
+                {
+                    var osu = loadOsu(host);
+                    var storage = osu.Dependencies.Get<Storage>();
+
+                    Assert.That(storage.GetFullPath("."), Is.EqualTo(Path.Combine(host.Storage.GetFullPath("."), "tournaments", "default")));
+                }
+                finally
+                {
+                    host.Exit();
+                }
+            }
+        }
+
+        [Test]
+        public void TestCustomDirectory()
+        {
+            using (HeadlessGameHost host = new HeadlessGameHost(nameof(TestCustomDirectory))) // don't use clean run as we are writing a config file.
+            {
+                string osuDesktopStorage = basePath(nameof(TestCustomDirectory));
+                const string custom_tournament = "custom";
+
+                // need access before the game has constructed its own storage yet.
+                Storage storage = new DesktopStorage(osuDesktopStorage, host);
+                // manual cleaning so we can prepare a config file.
+                storage.DeleteDirectory(string.Empty);
+
+                using (var storageConfig = new TournamentStorageManager(storage))
+                    storageConfig.Set(StorageConfig.CurrentTournament, custom_tournament);
+
+                try
+                {
+                    var osu = loadOsu(host);
+
+                    storage = osu.Dependencies.Get<Storage>();
+
+                    Assert.That(storage.GetFullPath("."), Is.EqualTo(Path.Combine(host.Storage.GetFullPath("."), "tournaments", custom_tournament)));
+                }
+                finally
+                {
+                    host.Exit();
+                }
+            }
+        }
+
+        [Test]
+        public void TestMigration()
+        {
+            using (HeadlessGameHost host = new HeadlessGameHost(nameof(TestMigration))) // don't use clean run as we are writing test files for migration.
+            {
+                string osuRoot = basePath(nameof(TestMigration));
+                string configFile = Path.Combine(osuRoot, "tournament.ini");
+
+                if (File.Exists(configFile))
+                    File.Delete(configFile);
+
+                // Recreate the old setup that uses "tournament" as the base path.
+                string oldPath = Path.Combine(osuRoot, "tournament");
+
+                string videosPath = Path.Combine(oldPath, "videos");
+                string modsPath = Path.Combine(oldPath, "mods");
+                string flagsPath = Path.Combine(oldPath, "flags");
+
+                Directory.CreateDirectory(videosPath);
+                Directory.CreateDirectory(modsPath);
+                Directory.CreateDirectory(flagsPath);
+
+                // Define testing files corresponding to the specific file migrations that are needed
+                string bracketFile = Path.Combine(osuRoot, "bracket.json");
+
+                string drawingsConfig = Path.Combine(osuRoot, "drawings.ini");
+                string drawingsFile = Path.Combine(osuRoot, "drawings.txt");
+                string drawingsResult = Path.Combine(osuRoot, "drawings_results.txt");
+
+                // Define sample files to test recursive copying
+                string videoFile = Path.Combine(videosPath, "video.mp4");
+                string modFile = Path.Combine(modsPath, "mod.png");
+                string flagFile = Path.Combine(flagsPath, "flag.png");
+
+                File.WriteAllText(bracketFile, "{}");
+                File.WriteAllText(drawingsConfig, "test");
+                File.WriteAllText(drawingsFile, "test");
+                File.WriteAllText(drawingsResult, "test");
+                File.WriteAllText(videoFile, "test");
+                File.WriteAllText(modFile, "test");
+                File.WriteAllText(flagFile, "test");
+
+                try
+                {
+                    var osu = loadOsu(host);
+
+                    var storage = osu.Dependencies.Get<Storage>();
+
+                    string migratedPath = Path.Combine(host.Storage.GetFullPath("."), "tournaments", "default");
+
+                    videosPath = Path.Combine(migratedPath, "videos");
+                    modsPath = Path.Combine(migratedPath, "mods");
+                    flagsPath = Path.Combine(migratedPath, "flags");
+
+                    videoFile = Path.Combine(videosPath, "video.mp4");
+                    modFile = Path.Combine(modsPath, "mod.png");
+                    flagFile = Path.Combine(flagsPath, "flag.png");
+
+                    Assert.That(storage.GetFullPath("."), Is.EqualTo(migratedPath));
+
+                    Assert.True(storage.Exists("bracket.json"));
+                    Assert.True(storage.Exists("drawings.txt"));
+                    Assert.True(storage.Exists("drawings_results.txt"));
+
+                    Assert.True(storage.Exists("drawings.ini"));
+
+                    Assert.True(storage.Exists(videoFile));
+                    Assert.True(storage.Exists(modFile));
+                    Assert.True(storage.Exists(flagFile));
+                }
+                finally
+                {
+                    host.Storage.Delete("tournament.ini");
+                    host.Storage.DeleteDirectory("tournaments");
+                    host.Exit();
+                }
+            }
+        }
+
+        private TournamentGameBase loadOsu(GameHost host)
+        {
+            var osu = new TournamentGameBase();
+            Task.Run(() => host.Run(osu));
+            waitForOrAssert(() => osu.IsLoaded, @"osu! failed to start in a reasonable amount of time");
+            return osu;
+        }
+
+        private static void waitForOrAssert(Func<bool> result, string failureMessage, int timeout = 90000)
+        {
+            Task task = Task.Run(() =>
+            {
+                while (!result()) Thread.Sleep(200);
+            });
+
+            Assert.IsTrue(task.Wait(timeout), failureMessage);
+        }
+
+        private string basePath(string testInstance) => Path.Combine(RuntimeInfo.StartupDirectory, "headless", testInstance);
+    }
+}

osu.Game.Tournament/Components/TourneyVideo.cs

@@ -9,6 +9,7 @@ using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Video;
 using osu.Framework.Timing;
 using osu.Game.Graphics;
+using osu.Game.Tournament.IO;
 
 namespace osu.Game.Tournament.Components
 {
@@ -17,7 +18,6 @@ namespace osu.Game.Tournament.Components
         private readonly string filename;
         private readonly bool drawFallbackGradient;
         private Video video;
-
         private ManualClock manualClock;
 
         public TourneyVideo(string filename, bool drawFallbackGradient = false)
@@ -27,9 +27,9 @@ namespace osu.Game.Tournament.Components
         }
 
         [BackgroundDependencyLoader]
-        private void load(TournamentStorage storage)
+        private void load(TournamentVideoResourceStore storage)
         {
-            var stream = storage.GetStream($@"videos/{filename}");
+            var stream = storage.GetStream(filename);
 
             if (stream != null)
             {

osu.Game.Tournament/Configuration/TournamentStorageManager.cs

@@ -0,0 +1,23 @@
+// 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.Configuration;
+using osu.Framework.Platform;
+
+namespace osu.Game.Tournament.Configuration
+{
+    public class TournamentStorageManager : IniConfigManager<StorageConfig>
+    {
+        protected override string Filename => "tournament.ini";
+
+        public TournamentStorageManager(Storage storage)
+            : base(storage)
+        {
+        }
+    }
+
+    public enum StorageConfig
+    {
+        CurrentTournament,
+    }
+}

osu.Game.Tournament/IO/TournamentStorage.cs

@@ -0,0 +1,72 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Logging;
+using osu.Framework.Platform;
+using osu.Game.IO;
+using System.IO;
+using osu.Game.Tournament.Configuration;
+
+namespace osu.Game.Tournament.IO
+{
+    public class TournamentStorage : MigratableStorage
+    {
+        private const string default_tournament = "default";
+        private readonly Storage storage;
+        private readonly TournamentStorageManager storageConfig;
+
+        public TournamentStorage(Storage storage)
+            : base(storage.GetStorageForDirectory("tournaments"), string.Empty)
+        {
+            this.storage = storage;
+
+            storageConfig = new TournamentStorageManager(storage);
+
+            if (storage.Exists("tournament.ini"))
+            {
+                ChangeTargetStorage(UnderlyingStorage.GetStorageForDirectory(storageConfig.Get<string>(StorageConfig.CurrentTournament)));
+            }
+            else
+                Migrate(UnderlyingStorage.GetStorageForDirectory(default_tournament));
+
+            Logger.Log("Using tournament storage: " + GetFullPath(string.Empty));
+        }
+
+        public override void Migrate(Storage newStorage)
+        {
+            // this migration only happens once on moving to the per-tournament storage system.
+            // listed files are those known at that point in time.
+            // this can be removed at some point in the future (6 months obsoletion would mean 2021-04-19)
+
+            var source = new DirectoryInfo(storage.GetFullPath("tournament"));
+            var destination = new DirectoryInfo(newStorage.GetFullPath("."));
+
+            if (source.Exists)
+            {
+                Logger.Log("Migrating tournament assets to default tournament storage.");
+                CopyRecursive(source, destination);
+                DeleteRecursive(source);
+            }
+
+            moveFileIfExists("bracket.json", destination);
+            moveFileIfExists("drawings.txt", destination);
+            moveFileIfExists("drawings_results.txt", destination);
+            moveFileIfExists("drawings.ini", destination);
+
+            ChangeTargetStorage(newStorage);
+            storageConfig.Set(StorageConfig.CurrentTournament, default_tournament);
+            storageConfig.Save();
+        }
+
+        private void moveFileIfExists(string file, DirectoryInfo destination)
+        {
+            if (!storage.Exists(file))
+                return;
+
+            Logger.Log($"Migrating {file} to default tournament storage.");
+            var fileInfo = new System.IO.FileInfo(storage.GetFullPath(file));
+            AttemptOperation(() => fileInfo.CopyTo(Path.Combine(destination.FullName, fileInfo.Name), true));
+            fileInfo.Delete();
+        }
+    }
+}

osu.Game.Tournament/IO/TournamentVideoResourceStore.cs

@@ -4,12 +4,12 @@
 using osu.Framework.IO.Stores;
 using osu.Framework.Platform;
 
-namespace osu.Game.Tournament
+namespace osu.Game.Tournament.IO
 {
-    internal class TournamentStorage : NamespacedResourceStore<byte[]>
+    public class TournamentVideoResourceStore : NamespacedResourceStore<byte[]>
     {
-        public TournamentStorage(Storage storage)
+        public TournamentVideoResourceStore(Storage storage)
-            : base(new StorageBackedResourceStore(storage), "tournament")
+            : base(new StorageBackedResourceStore(storage), "videos")
         {
             AddExtension("m4v");
             AddExtension("avi");

osu.Game.Tournament/Screens/Drawings/DrawingsScreen.cs

@@ -234,7 +234,7 @@ namespace osu.Game.Tournament.Screens.Drawings
                             if (string.IsNullOrEmpty(line))
                                 continue;
 
-                            if (line.ToUpperInvariant().StartsWith("GROUP"))
+                            if (line.ToUpperInvariant().StartsWith("GROUP", StringComparison.Ordinal))
                                 continue;
 
                             // ReSharper disable once AccessToModifiedClosure

osu.Game.Tournament/TournamentGameBase.cs

@@ -8,11 +8,12 @@ using Newtonsoft.Json;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Input;
-using osu.Framework.IO.Stores;
 using osu.Framework.Platform;
+using osu.Framework.IO.Stores;
 using osu.Game.Beatmaps;
 using osu.Game.Online.API.Requests;
 using osu.Game.Tournament.IPC;
+using osu.Game.Tournament.IO;
 using osu.Game.Tournament.Models;
 using osu.Game.Users;
 using osuTK.Input;
@@ -23,13 +24,8 @@ namespace osu.Game.Tournament
     public class TournamentGameBase : OsuGameBase
     {
         private const string bracket_filename = "bracket.json";
-
         private LadderInfo ladder;
-
+        private TournamentStorage storage;
-        private Storage storage;
-
-        private TournamentStorage tournamentStorage;
-
         private DependencyContainer dependencies;
         private FileBasedIPC ipc;
 
@@ -39,15 +35,14 @@ namespace osu.Game.Tournament
         }
 
         [BackgroundDependencyLoader]
-        private void load(Storage storage)
+        private void load(Storage baseStorage)
         {
             Resources.AddStore(new DllResourceStore(typeof(TournamentGameBase).Assembly));
 
-            dependencies.CacheAs(tournamentStorage = new TournamentStorage(storage));
+            dependencies.CacheAs<Storage>(storage = new TournamentStorage(baseStorage));
+            dependencies.Cache(new TournamentVideoResourceStore(storage));
 
-            Textures.AddStore(new TextureLoaderStore(tournamentStorage));
+            Textures.AddStore(new TextureLoaderStore(new StorageBackedResourceStore(storage)));
-
-            this.storage = storage;
 
             readBracket();
 

osu.Game/Beatmaps/BeatmapDifficultyManager.cs

@@ -13,9 +13,12 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Lists;
+using osu.Framework.Logging;
 using osu.Framework.Threading;
+using osu.Framework.Utils;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Beatmaps
 {
@@ -124,13 +127,22 @@ namespace osu.Game.Beatmaps
         /// <returns>The <see cref="DifficultyRating"/> that best describes <paramref name="starRating"/>.</returns>
         public static DifficultyRating GetDifficultyRating(double starRating)
         {
-            if (starRating < 2.0) return DifficultyRating.Easy;
+            if (Precision.AlmostBigger(starRating, 6.5, 0.005))
-            if (starRating < 2.7) return DifficultyRating.Normal;
+                return DifficultyRating.ExpertPlus;
-            if (starRating < 4.0) return DifficultyRating.Hard;
-            if (starRating < 5.3) return DifficultyRating.Insane;
-            if (starRating < 6.5) return DifficultyRating.Expert;
 
-            return DifficultyRating.ExpertPlus;
+            if (Precision.AlmostBigger(starRating, 5.3, 0.005))
+                return DifficultyRating.Expert;
+
+            if (Precision.AlmostBigger(starRating, 4.0, 0.005))
+                return DifficultyRating.Insane;
+
+            if (Precision.AlmostBigger(starRating, 2.7, 0.005))
+                return DifficultyRating.Hard;
+
+            if (Precision.AlmostBigger(starRating, 2.0, 0.005))
+                return DifficultyRating.Normal;
+
+            return DifficultyRating.Easy;
         }
 
         private CancellationTokenSource trackedUpdateCancellationSource;
@@ -228,6 +240,24 @@ namespace osu.Game.Beatmaps
 
                 return difficultyCache[key] = new StarDifficulty(attributes.StarRating, attributes.MaxCombo);
             }
+            catch (BeatmapInvalidForRulesetException e)
+            {
+                // Conversion has failed for the given ruleset, so return the difficulty in the beatmap's default ruleset.
+
+                // Ensure the beatmap's default ruleset isn't the one already being converted to.
+                // This shouldn't happen as it means something went seriously wrong, but if it does an endless loop should be avoided.
+                if (rulesetInfo.Equals(beatmapInfo.Ruleset))
+                {
+                    Logger.Error(e, $"Failed to convert {beatmapInfo.OnlineBeatmapID} to the beatmap's default ruleset ({beatmapInfo.Ruleset}).");
+                    return difficultyCache[key] = new StarDifficulty();
+                }
+
+                // Check the cache first because this is now a different ruleset than the one previously guarded against.
+                if (tryGetExisting(beatmapInfo, beatmapInfo.Ruleset, Array.Empty<Mod>(), out var existingDefault, out var existingDefaultKey))
+                    return existingDefault;
+
+                return computeDifficulty(existingDefaultKey, beatmapInfo, beatmapInfo.Ruleset);
+            }
             catch
             {
                 return difficultyCache[key] = new StarDifficulty();

osu.Game/Beatmaps/BeatmapInfo.cs

@@ -92,13 +92,14 @@ namespace osu.Game.Beatmaps
 
         public bool LetterboxInBreaks { get; set; }
         public bool WidescreenStoryboard { get; set; }
+        public bool EpilepsyWarning { get; set; }
 
         // Editor
         // This bookmarks stuff is necessary because DB doesn't know how to store int[]
         [JsonIgnore]
         public string StoredBookmarks
         {
-            get => string.Join(",", Bookmarks);
+            get => string.Join(',', Bookmarks);
             set
             {
                 if (string.IsNullOrEmpty(value))

osu.Game/Beatmaps/BeatmapManager.cs

@@ -19,6 +19,7 @@ using osu.Framework.Graphics.Textures;
 using osu.Framework.Lists;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
+using osu.Framework.Testing;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.Database;
 using osu.Game.IO;
@@ -36,6 +37,7 @@ namespace osu.Game.Beatmaps
     /// <summary>
     /// Handles the storage and retrieval of Beatmaps/WorkingBeatmaps.
     /// </summary>
+    [ExcludeFromDynamicCompile]
     public partial class BeatmapManager : DownloadableArchiveModelManager<BeatmapSetInfo, BeatmapSetFileInfo>, IDisposable
     {
         /// <summary>
@@ -389,7 +391,7 @@ namespace osu.Game.Beatmaps
         protected override BeatmapSetInfo CreateModel(ArchiveReader reader)
         {
             // let's make sure there are actually .osu files to import.
-            string mapName = reader.Filenames.FirstOrDefault(f => f.EndsWith(".osu"));
+            string mapName = reader.Filenames.FirstOrDefault(f => f.EndsWith(".osu", StringComparison.OrdinalIgnoreCase));
 
             if (string.IsNullOrEmpty(mapName))
             {
@@ -417,7 +419,7 @@ namespace osu.Game.Beatmaps
         {
             var beatmapInfos = new List<BeatmapInfo>();
 
-            foreach (var file in files.Where(f => f.Filename.EndsWith(".osu")))
+            foreach (var file in files.Where(f => f.Filename.EndsWith(".osu", StringComparison.OrdinalIgnoreCase)))
             {
                 using (var raw = Files.Store.GetStream(file.FileInfo.StoragePath))
                 using (var ms = new MemoryStream()) // we need a memory stream so we can seek

osu.Game/Beatmaps/BeatmapManager_BeatmapOnlineLookupQueue.cs

@@ -13,6 +13,7 @@ using osu.Framework.Development;
 using osu.Framework.IO.Network;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
+using osu.Framework.Testing;
 using osu.Framework.Threading;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
@@ -23,6 +24,7 @@ namespace osu.Game.Beatmaps
 {
     public partial class BeatmapManager
     {
+        [ExcludeFromDynamicCompile]
         private class BeatmapOnlineLookupQueue : IDisposable
         {
             private readonly IAPIProvider api;

osu.Game/Beatmaps/BeatmapManager_WorkingBeatmap.cs

@@ -8,6 +8,7 @@ using osu.Framework.Audio.Track;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.IO.Stores;
 using osu.Framework.Logging;
+using osu.Framework.Testing;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.IO;
 using osu.Game.Skinning;
@@ -17,6 +18,7 @@ namespace osu.Game.Beatmaps
 {
     public partial class BeatmapManager
     {
+        [ExcludeFromDynamicCompile]
         private class BeatmapManagerWorkingBeatmap : WorkingBeatmap
         {
             private readonly IResourceStore<byte[]> store;

osu.Game/Beatmaps/BeatmapSetInfo.cs

@@ -57,7 +57,7 @@ namespace osu.Game.Beatmaps
 
         public string Hash { get; set; }
 
-        public string StoryboardFile => Files?.Find(f => f.Filename.EndsWith(".osb"))?.Filename;
+        public string StoryboardFile => Files?.Find(f => f.Filename.EndsWith(".osb", StringComparison.OrdinalIgnoreCase))?.Filename;
 
         public List<BeatmapSetFileInfo> Files { get; set; }
 

osu.Game/Beatmaps/Drawables/DifficultyIcon.cs

@@ -47,7 +47,10 @@ namespace osu.Game.Beatmaps.Drawables
         private readonly IReadOnlyList<Mod> mods;
 
         private readonly bool shouldShowTooltip;
-        private readonly IBindable<StarDifficulty> difficultyBindable = new Bindable<StarDifficulty>();
+
+        private readonly bool performBackgroundDifficultyLookup;
+
+        private readonly Bindable<StarDifficulty> difficultyBindable = new Bindable<StarDifficulty>();
 
         private Drawable background;
 
@@ -70,10 +73,12 @@ namespace osu.Game.Beatmaps.Drawables
         /// </summary>
         /// <param name="beatmap">The beatmap to show the difficulty of.</param>
         /// <param name="shouldShowTooltip">Whether to display a tooltip when hovered.</param>
-        public DifficultyIcon([NotNull] BeatmapInfo beatmap, bool shouldShowTooltip = true)
+        /// <param name="performBackgroundDifficultyLookup">Whether to perform difficulty lookup (including calculation if necessary).</param>
+        public DifficultyIcon([NotNull] BeatmapInfo beatmap, bool shouldShowTooltip = true, bool performBackgroundDifficultyLookup = true)
         {
             this.beatmap = beatmap ?? throw new ArgumentNullException(nameof(beatmap));
             this.shouldShowTooltip = shouldShowTooltip;
+            this.performBackgroundDifficultyLookup = performBackgroundDifficultyLookup;
 
             AutoSizeAxes = Axes.Both;
 
@@ -112,9 +117,13 @@ namespace osu.Game.Beatmaps.Drawables
                     // the null coalesce here is only present to make unit tests work (ruleset dlls aren't copied correctly for testing at the moment)
                     Icon = (ruleset ?? beatmap.Ruleset)?.CreateInstance()?.CreateIcon() ?? new SpriteIcon { Icon = FontAwesome.Regular.QuestionCircle }
                 },
-                new DelayedLoadUnloadWrapper(() => new DifficultyRetriever(beatmap, ruleset, mods) { StarDifficulty = { BindTarget = difficultyBindable } }, 0),
             };
 
+            if (performBackgroundDifficultyLookup)
+                iconContainer.Add(new DelayedLoadUnloadWrapper(() => new DifficultyRetriever(beatmap, ruleset, mods) { StarDifficulty = { BindTarget = difficultyBindable } }, 0));
+            else
+                difficultyBindable.Value = new StarDifficulty(beatmap.StarDifficulty, 0);
+
             difficultyBindable.BindValueChanged(difficulty => background.Colour = colours.ForDifficultyRating(difficulty.NewValue.DifficultyRating));
         }
 

osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs

@@ -175,6 +175,10 @@ namespace osu.Game.Beatmaps.Formats
                 case @"WidescreenStoryboard":
                     beatmap.BeatmapInfo.WidescreenStoryboard = Parsing.ParseInt(pair.Value) == 1;
                     break;
+
+                case @"EpilepsyWarning":
+                    beatmap.BeatmapInfo.EpilepsyWarning = Parsing.ParseInt(pair.Value) == 1;
+                    break;
             }
         }
 
@@ -307,12 +311,7 @@ namespace osu.Game.Beatmaps.Formats
                     double start = getOffsetTime(Parsing.ParseDouble(split[1]));
                     double end = Math.Max(start, getOffsetTime(Parsing.ParseDouble(split[2])));
 
-                    var breakEvent = new BreakPeriod(start, end);
+                    beatmap.Breaks.Add(new BreakPeriod(start, end));
-
-                    if (!breakEvent.HasEffect)
-                        return;
-
-                    beatmap.Breaks.Add(breakEvent);
                     break;
             }
         }

osu.Game/Beatmaps/Formats/LegacyDecoder.cs

@@ -92,7 +92,7 @@ namespace osu.Game.Beatmaps.Formats
         {
             var pair = SplitKeyVal(line);
 
-            bool isCombo = pair.Key.StartsWith(@"Combo");
+            bool isCombo = pair.Key.StartsWith(@"Combo", StringComparison.Ordinal);
 
             string[] split = pair.Value.Split(',');
 

osu.Game/Beatmaps/Timing/BreakPeriod.cs

@@ -28,7 +28,7 @@ namespace osu.Game.Beatmaps.Timing
         public double Duration => EndTime - StartTime;
 
         /// <summary>
-        /// Whether the break has any effect. Breaks that are too short are culled before they are added to the beatmap.
+        /// Whether the break has any effect.
         /// </summary>
         public bool HasEffect => Duration >= MIN_BREAK_DURATION;
 

osu.Game/Configuration/HUDVisibilityMode.cs

@@ -0,0 +1,20 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.ComponentModel;
+
+namespace osu.Game.Configuration
+{
+    public enum HUDVisibilityMode
+    {
+        Never,
+
+        [Description("Hide during gameplay")]
+        HideDuringGameplay,
+
+        [Description("Hide during breaks")]
+        HideDuringBreaks,
+
+        Always
+    }
+}

osu.Game/Configuration/OsuConfigManager.cs

@@ -90,7 +90,7 @@ namespace osu.Game.Configuration
 
             Set(OsuSetting.HitLighting, true);
 
-            Set(OsuSetting.ShowInterface, true);
+            Set(OsuSetting.HUDVisibilityMode, HUDVisibilityMode.Always);
             Set(OsuSetting.ShowProgressGraph, true);
             Set(OsuSetting.ShowHealthDisplayWhenCantFail, true);
             Set(OsuSetting.FadePlayfieldWhenHealthLow, true);
@@ -190,7 +190,7 @@ namespace osu.Game.Configuration
         AlwaysPlayFirstComboBreak,
         ScoreMeter,
         FloatingComments,
-        ShowInterface,
+        HUDVisibilityMode,
         ShowProgressGraph,
         ShowHealthDisplayWhenCantFail,
         FadePlayfieldWhenHealthLow,

osu.Game/Configuration/ScoreMeterType.cs

@@ -16,7 +16,10 @@ namespace osu.Game.Configuration
         [Description("Hit Error (right)")]
         HitErrorRight,
 
-        [Description("Hit Error (both)")]
+        [Description("Hit Error (bottom)")]
+        HitErrorBottom,
+
+        [Description("Hit Error (left+right)")]
         HitErrorBoth,
 
         [Description("Colour (left)")]
@@ -25,7 +28,10 @@ namespace osu.Game.Configuration
         [Description("Colour (right)")]
         ColourRight,
 
-        [Description("Colour (both)")]
+        [Description("Colour (left+right)")]
         ColourBoth,
+
+        [Description("Colour (bottom)")]
+        ColourBottom,
     }
 }

osu.Game/Database/ArchiveModelManager.cs

@@ -279,7 +279,7 @@ namespace osu.Game.Database
             // for now, concatenate all .osu files in the set to create a unique hash.
             MemoryStream hashable = new MemoryStream();
 
-            foreach (TFileModel file in item.Files.Where(f => HashableFileTypes.Any(f.Filename.EndsWith)).OrderBy(f => f.Filename))
+            foreach (TFileModel file in item.Files.Where(f => HashableFileTypes.Any(ext => f.Filename.EndsWith(ext, StringComparison.OrdinalIgnoreCase))).OrderBy(f => f.Filename))
             {
                 using (Stream s = Files.Store.GetStream(file.FileInfo.StoragePath))
                     s.CopyTo(hashable);
@@ -593,7 +593,7 @@ namespace osu.Game.Database
             var fileInfos = new List<TFileModel>();
 
             string prefix = reader.Filenames.GetCommonPrefix();
-            if (!(prefix.EndsWith("/") || prefix.EndsWith("\\")))
+            if (!(prefix.EndsWith('/') || prefix.EndsWith('\\')))
                 prefix = string.Empty;
 
             // import files to manager