Merge pull request #10328 from smoogipoo/fix-spinner-transforms

Fix spinners not transforming correctly

README.md

@@ -38,7 +38,13 @@ If you are looking to install or test osu! without setting up a development envi
 
 If your platform is not listed above, there is still a chance you can manually build it by following the instructions below.
 
-## Developing or debugging
+## Developing a custom ruleset
+
+osu! is designed to have extensible modular gameplay modes, called "rulesets". Building one of these allows a developer to harness the power of osu! for their own game style. To get started working on a ruleset, we have some templates available [here](https://github.com/ppy/osu-templates).
+
+You can see some examples of custom rulesets by visiting the [custom ruleset directory](https://github.com/ppy/osu/issues/5852).
+
+## Developing osu!
 
 Please make sure you have the following prerequisites:
 

global.json

@@ -5,6 +5,6 @@
     "version": "3.1.100"
   },
   "msbuild-sdks": {
-    "Microsoft.Build.Traversal": "2.0.52"
+    "Microsoft.Build.Traversal": "2.1.1"
   }
 }

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.812.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.819.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.904.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1001.0" />
   </ItemGroup>
 </Project>

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

@@ -14,6 +14,7 @@ using osu.Game.Tests.Beatmaps;
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
+    [Timeout(10000)]
     public class CatchBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Catch";

osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModPerfect.cs

@@ -50,7 +50,7 @@ namespace osu.Game.Rulesets.Catch.Tests.Mods
         public void TestDroplet(bool shouldMiss) => CreateHitObjectTest(new HitObjectTestData(new Droplet { StartTime = 1000 }), shouldMiss);
 
         // We only care about testing misses, hits are tested via JuiceStream
-        [TestCase(false)]
+        [TestCase(true)]
         public void TestTinyDroplet(bool shouldMiss) => CreateHitObjectTest(new HitObjectTestData(new TinyDroplet { StartTime = 1000 }), shouldMiss);
     }
 }

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

@@ -87,7 +87,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                 Schedule(() =>
                 {
                     area.AttemptCatch(fruit);
-                    area.OnResult(drawable, new JudgementResult(fruit, new CatchJudgement()) { Type = miss ? HitResult.Miss : HitResult.Great });
+                    area.OnNewResult(drawable, new JudgementResult(fruit, new CatchJudgement()) { Type = miss ? HitResult.Miss : HitResult.Great });
 
                     drawable.Expire();
                 });

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

@@ -0,0 +1,65 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Scoring;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneComboCounter : CatchSkinnableTestScene
+    {
+        private ScoreProcessor scoreProcessor;
+
+        private Color4 judgedObjectColour = Color4.White;
+
+        [SetUp]
+        public void SetUp() => Schedule(() =>
+        {
+            scoreProcessor = new ScoreProcessor();
+
+            SetContents(() => new CatchComboDisplay
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Scale = new Vector2(2.5f),
+            });
+        });
+
+        [Test]
+        public void TestCatchComboCounter()
+        {
+            AddRepeatStep("perform hit", () => performJudgement(HitResult.Great), 20);
+            AddStep("perform miss", () => performJudgement(HitResult.Miss));
+
+            AddStep("randomize judged object colour", () =>
+            {
+                judgedObjectColour = new Color4(
+                    RNG.NextSingle(1f),
+                    RNG.NextSingle(1f),
+                    RNG.NextSingle(1f),
+                    1f
+                );
+            });
+        }
+
+        private void performJudgement(HitResult type, Judgement judgement = null)
+        {
+            var judgedObject = new DrawableFruit(new Fruit()) { AccentColour = { Value = judgedObjectColour } };
+
+            var result = new JudgementResult(judgedObject.HitObject, judgement ?? new Judgement()) { Type = type };
+            scoreProcessor.ApplyResult(result);
+
+            foreach (var counter in CreatedDrawables.Cast<CatchComboDisplay>())
+                counter.OnNewResult(judgedObject, result);
+        }
+    }
+}

osu.Game.Rulesets.Catch.Tests/osu.Game.Rulesets.Catch.Tests.csproj

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmap.cs

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 
@@ -23,19 +22,19 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                 {
                     Name = @"Fruit Count",
                     Content = fruits.ToString(),
-                    Icon = FontAwesome.Regular.Circle
+                    CreateIcon = () => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Circles),
                 },
                 new BeatmapStatistic
                 {
                     Name = @"Juice Stream Count",
                     Content = juiceStreams.ToString(),
-                    Icon = FontAwesome.Regular.Circle
+                    CreateIcon = () => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders),
                 },
                 new BeatmapStatistic
                 {
                     Name = @"Banana Shower Count",
                     Content = bananaShowers.ToString(),
-                    Icon = FontAwesome.Regular.Circle
+                    CreateIcon = () => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Spinners),
                 }
             };
         }

osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapConverter.cs

@@ -5,6 +5,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Objects;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -20,7 +21,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
         public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
-        protected override IEnumerable<CatchHitObject> ConvertHitObject(HitObject obj, IBeatmap beatmap)
+        protected override IEnumerable<CatchHitObject> ConvertHitObject(HitObject obj, IBeatmap beatmap, CancellationToken cancellationToken)
         {
             var positionData = obj as IHasXPosition;
             var comboData = obj as IHasCombo;

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -21,13 +21,11 @@ using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using System;
-using osu.Framework.Testing;
 using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Catch
 {
-    [ExcludeFromDynamicCompile]
     public class CatchRuleset : Ruleset, ILegacyRuleset
     {
         public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null) => new DrawableCatchRuleset(this, beatmap, mods);

osu.Game.Rulesets.Catch/CatchSkinComponents.cs

@@ -13,6 +13,7 @@ namespace osu.Game.Rulesets.Catch
         Droplet,
         CatcherIdle,
         CatcherFail,
-        CatcherKiai
+        CatcherKiai,
+        CatchComboCounter
     }
 }

osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyAttributes.cs

@@ -8,6 +8,5 @@ namespace osu.Game.Rulesets.Catch.Difficulty
     public class CatchDifficultyAttributes : DifficultyAttributes
     {
         public double ApproachRate;
-        public int MaxCombo;
     }
 }

osu.Game.Rulesets.Catch/Difficulty/CatchPerformanceCalculator.cs

@@ -34,7 +34,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty
         {
             mods = Score.Mods;
 
-            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Perfect);
+            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Great);
             ticksHit = Score.Statistics.GetOrDefault(HitResult.LargeTickHit);
             tinyTicksHit = Score.Statistics.GetOrDefault(HitResult.SmallTickHit);
             tinyTicksMissed = Score.Statistics.GetOrDefault(HitResult.SmallTickMiss);

osu.Game.Rulesets.Catch/Judgements/CatchBananaJudgement.cs

@@ -8,31 +8,7 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchBananaJudgement : CatchJudgement
     {
-        public override bool AffectsCombo => false;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 1100;
-            }
-        }
-
-        protected override double HealthIncreaseFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return DEFAULT_MAX_HEALTH_INCREASE * 0.75;
-            }
-        }
+        public override HitResult MaxResult => HitResult.LargeBonus;
 
         public override bool ShouldExplodeFor(JudgementResult result) => true;
     }

osu.Game.Rulesets.Catch/Judgements/CatchDropletJudgement.cs

@@ -7,16 +7,6 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchDropletJudgement : CatchJudgement
     {
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 30;
-            }
-        }
+        public override HitResult MaxResult => HitResult.LargeTickHit;
     }
 }

osu.Game.Rulesets.Catch/Judgements/CatchJudgement.cs

@@ -9,19 +9,7 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchJudgement : Judgement
     {
-        public override HitResult MaxResult => HitResult.Perfect;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 300;
-            }
-        }
+        public override HitResult MaxResult => HitResult.Great;
 
         /// <summary>
         /// Whether fruit on the platter should explode or drop.

osu.Game.Rulesets.Catch/Judgements/CatchTinyDropletJudgement.cs

@@ -7,30 +7,6 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchTinyDropletJudgement : CatchJudgement
     {
-        public override bool AffectsCombo => false;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 10;
-            }
-        }
-
-        protected override double HealthIncreaseFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 0.02;
-            }
-        }
+        public override HitResult MaxResult => HitResult.SmallTickHit;
     }
 }

osu.Game.Rulesets.Catch/Objects/Drawables/DrawableCatchHitObject.cs

@@ -8,7 +8,6 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Catch.UI;
 using osuTK;
 using osuTK.Graphics;
@@ -86,7 +85,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
             if (CheckPosition == null) return;
 
             if (timeOffset >= 0 && Result != null)
-                ApplyResult(r => r.Type = CheckPosition.Invoke(HitObject) ? HitResult.Perfect : HitResult.Miss);
+                ApplyResult(r => r.Type = CheckPosition.Invoke(HitObject) ? r.Judgement.MaxResult : r.Judgement.MinResult);
         }
 
         protected override void UpdateStateTransforms(ArmedState state)

osu.Game.Rulesets.Catch/Replays/CatchAutoGenerator.cs

@@ -31,6 +31,9 @@ namespace osu.Game.Rulesets.Catch.Replays
 
         public override Replay Generate()
         {
+            if (Beatmap.HitObjects.Count == 0)
+                return Replay;
+
             // todo: add support for HT DT
             const double dash_speed = Catcher.BASE_SPEED;
             const double movement_speed = dash_speed / 2;

osu.Game.Rulesets.Catch/Scoring/CatchHitWindows.cs

@@ -11,7 +11,7 @@ namespace osu.Game.Rulesets.Catch.Scoring
         {
             switch (result)
             {
-                case HitResult.Perfect:
+                case HitResult.Great:
                 case HitResult.Miss:
                     return true;
             }

osu.Game.Rulesets.Catch/Scoring/CatchScoreProcessor.cs

@@ -7,6 +7,5 @@ namespace osu.Game.Rulesets.Catch.Scoring
 {
     public class CatchScoreProcessor : ScoreProcessor
     {
-        public override HitWindows CreateHitWindows() => new CatchHitWindows();
     }
 }

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

@@ -6,6 +6,8 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Skinning;
 using osuTK;
+using osuTK.Graphics;
+using static osu.Game.Skinning.LegacySkinConfiguration;
 
 namespace osu.Game.Rulesets.Catch.Skinning
 {
@@ -51,6 +53,15 @@ namespace osu.Game.Rulesets.Catch.Skinning
                 case CatchSkinComponents.CatcherKiai:
                     return this.GetAnimation("fruit-catcher-kiai", true, true, true) ??
                            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 (this.HasFont(comboFont))
+                        return new LegacyComboCounter(Source);
+
+                    break;
             }
 
             return null;
@@ -61,7 +72,12 @@ namespace osu.Game.Rulesets.Catch.Skinning
             switch (lookup)
             {
                 case CatchSkinColour colour:
-                    return Source.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+                    var result = (Bindable<Color4>)Source.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+                    if (result == null)
+                        return null;
+
+                    result.Value = LegacyColourCompatibility.DisallowZeroAlpha(result.Value);
+                    return (IBindable<TValue>)result;
             }
 
             return Source.GetConfig<TLookup, TValue>(lookup);

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

@@ -0,0 +1,103 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osuTK;
+using osuTK.Graphics;
+using static osu.Game.Skinning.LegacySkinConfiguration;
+
+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
+    {
+        private readonly LegacyRollingCounter counter;
+
+        private readonly LegacyRollingCounter explosion;
+
+        public LegacyComboCounter(ISkin skin)
+        {
+            var fontName = skin.GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score";
+            var fontOverlap = skin.GetConfig<LegacySetting, float>(LegacySetting.ComboOverlap)?.Value ?? -2f;
+
+            AutoSizeAxes = Axes.Both;
+
+            Alpha = 0f;
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+            Scale = new Vector2(0.8f);
+
+            InternalChildren = new Drawable[]
+            {
+                explosion = new LegacyRollingCounter(skin, fontName, fontOverlap)
+                {
+                    Alpha = 0.65f,
+                    Blending = BlendingParameters.Additive,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Scale = new Vector2(1.5f),
+                },
+                counter = new LegacyRollingCounter(skin, fontName, fontOverlap)
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                },
+            };
+        }
+
+        private int lastDisplayedCombo;
+
+        public void UpdateCombo(int combo, Color4? hitObjectColour = null)
+        {
+            if (combo == lastDisplayedCombo)
+                return;
+
+            // There may still be existing transforms to the counter (including value change after 250ms),
+            // finish them immediately before new transforms.
+            counter.SetCountWithoutRolling(lastDisplayedCombo);
+
+            lastDisplayedCombo = combo;
+
+            if (Time.Elapsed < 0)
+            {
+                // needs more work to make rewind somehow look good.
+                // basically we want the previous increment to play... or turning off RemoveCompletedTransforms (not feasible from a performance angle).
+                Hide();
+                return;
+            }
+
+            // Combo fell to zero, roll down and fade out the counter.
+            if (combo == 0)
+            {
+                counter.Current.Value = 0;
+                explosion.Current.Value = 0;
+
+                this.FadeOut(400, Easing.Out);
+            }
+            else
+            {
+                this.FadeInFromZero().Then().Delay(1000).FadeOut(300);
+
+                counter.ScaleTo(1.5f)
+                       .ScaleTo(0.8f, 250, Easing.Out)
+                       .OnComplete(c => c.SetCountWithoutRolling(combo));
+
+                counter.Delay(250)
+                       .ScaleTo(1f)
+                       .ScaleTo(1.1f, 60).Then().ScaleTo(1f, 30);
+
+                explosion.Colour = hitObjectColour ?? Color4.White;
+
+                explosion.SetCountWithoutRolling(combo);
+                explosion.ScaleTo(1.5f)
+                         .ScaleTo(1.9f, 400, Easing.Out)
+                         .FadeOutFromOne(400);
+            }
+        }
+    }
+}

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

@@ -40,7 +40,6 @@ namespace osu.Game.Rulesets.Catch.Skinning
                 colouredSprite = new Sprite
                 {
                     Texture = skin.GetTexture(lookupName),
-                    Colour = drawableObject.AccentColour.Value,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                 },
@@ -76,7 +75,7 @@ namespace osu.Game.Rulesets.Catch.Skinning
         {
             base.LoadComplete();
 
-            accentColour.BindValueChanged(colour => colouredSprite.Colour = colour.NewValue, true);
+            accentColour.BindValueChanged(colour => colouredSprite.Colour = LegacyColourCompatibility.DisallowZeroAlpha(colour.NewValue), true);
         }
     }
 }

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

@@ -0,0 +1,62 @@
+// 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 JetBrains.Annotations;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.UI
+{
+    /// <summary>
+    /// Represents a component that displays a skinned <see cref="ICatchComboCounter"/> and handles combo judgement results for updating it accordingly.
+    /// </summary>
+    public class CatchComboDisplay : SkinnableDrawable
+    {
+        private int currentCombo;
+
+        [CanBeNull]
+        public ICatchComboCounter ComboCounter => Drawable as ICatchComboCounter;
+
+        public CatchComboDisplay()
+            : base(new CatchSkinComponent(CatchSkinComponents.CatchComboCounter), _ => Empty())
+        {
+        }
+
+        protected override void SkinChanged(ISkinSource skin, bool allowFallback)
+        {
+            base.SkinChanged(skin, allowFallback);
+            ComboCounter?.UpdateCombo(currentCombo);
+        }
+
+        public void OnNewResult(DrawableCatchHitObject judgedObject, JudgementResult result)
+        {
+            if (!result.Type.AffectsCombo() || !result.HasResult)
+                return;
+
+            if (result.Type == HitResult.Miss)
+            {
+                updateCombo(0, null);
+                return;
+            }
+
+            updateCombo(result.ComboAtJudgement + 1, judgedObject.AccentColour.Value);
+        }
+
+        public void OnRevertResult(DrawableCatchHitObject judgedObject, JudgementResult result)
+        {
+            if (!result.Type.AffectsCombo() || !result.HasResult)
+                return;
+
+            updateCombo(result.ComboAtJudgement, judgedObject.AccentColour.Value);
+        }
+
+        private void updateCombo(int newCombo, Color4? hitObjectColour)
+        {
+            currentCombo = newCombo;
+            ComboCounter?.UpdateCombo(newCombo, hitObjectColour);
+        }
+    }
+}

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

@@ -53,7 +53,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 explodingFruitContainer,
                 CatcherArea.MovableCatcher.CreateProxiedContent(),
                 HitObjectContainer,
-                CatcherArea
+                CatcherArea,
             };
         }
 
@@ -62,6 +62,7 @@ namespace osu.Game.Rulesets.Catch.UI
         public override void Add(DrawableHitObject h)
         {
             h.OnNewResult += onNewResult;
+            h.OnRevertResult += onRevertResult;
 
             base.Add(h);
 
@@ -70,6 +71,9 @@ namespace osu.Game.Rulesets.Catch.UI
         }
 
         private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
-            => CatcherArea.OnResult((DrawableCatchHitObject)judgedObject, result);
+            => CatcherArea.OnNewResult((DrawableCatchHitObject)judgedObject, result);
+
+        private void onRevertResult(DrawableHitObject judgedObject, JudgementResult result)
+            => CatcherArea.OnRevertResult((DrawableCatchHitObject)judgedObject, result);
     }
 }

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

@@ -11,6 +11,7 @@ using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.Replays;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osuTK;
 
@@ -23,6 +24,7 @@ namespace osu.Game.Rulesets.Catch.UI
         public Func<CatchHitObject, DrawableHitObject<CatchHitObject>> CreateDrawableRepresentation;
 
         public readonly Catcher MovableCatcher;
+        private readonly CatchComboDisplay comboDisplay;
 
         public Container ExplodingFruitTarget
         {
@@ -34,12 +36,24 @@ namespace osu.Game.Rulesets.Catch.UI
         public CatcherArea(BeatmapDifficulty difficulty = null)
         {
             Size = new Vector2(CatchPlayfield.WIDTH, CATCHER_SIZE);
-            Child = MovableCatcher = new Catcher(this, difficulty) { X = CatchPlayfield.CENTER_X };
+            Children = new Drawable[]
+            {
+                comboDisplay = new CatchComboDisplay
+                {
+                    RelativeSizeAxes = Axes.None,
+                    AutoSizeAxes = Axes.Both,
+                    Anchor = Anchor.TopLeft,
+                    Origin = Anchor.Centre,
+                    Margin = new MarginPadding { Bottom = 350f },
+                    X = CatchPlayfield.CENTER_X
+                },
+                MovableCatcher = new Catcher(this, difficulty) { X = CatchPlayfield.CENTER_X },
+            };
         }
 
-        public void OnResult(DrawableCatchHitObject fruit, JudgementResult result)
+        public void OnNewResult(DrawableCatchHitObject fruit, JudgementResult result)
         {
-            if (result.Judgement is IgnoreJudgement)
+            if (!result.Type.IsScorable())
                 return;
 
             void runAfterLoaded(Action action)
@@ -86,8 +100,13 @@ namespace osu.Game.Rulesets.Catch.UI
                 else
                     MovableCatcher.Drop();
             }
+
+            comboDisplay.OnNewResult(fruit, result);
         }
 
+        public void OnRevertResult(DrawableCatchHitObject fruit, JudgementResult result)
+            => comboDisplay.OnRevertResult(fruit, result);
+
         public void OnReleased(CatchAction action)
         {
         }
@@ -105,6 +124,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
             if (state?.CatcherX != null)
                 MovableCatcher.X = state.CatcherX.Value;
+
+            comboDisplay.X = MovableCatcher.X;
         }
     }
 }

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

@@ -0,0 +1,24 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.UI
+{
+    /// <summary>
+    /// An interface providing a set of methods to update the combo counter.
+    /// </summary>
+    public interface ICatchComboCounter : IDrawable
+    {
+        /// <summary>
+        /// Updates the counter to animate a transition from the old combo value it had to the current provided one.
+        /// </summary>
+        /// <remarks>
+        /// This is called regardless of whether the clock is rewinding.
+        /// </remarks>
+        /// <param name="combo">The new combo value.</param>
+        /// <param name="hitObjectColour">The colour of the object if hit, null on miss.</param>
+        void UpdateCombo(int combo, Color4? hitObjectColour = null);
+    }
+}

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

@@ -16,7 +16,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 using osuTK.Graphics;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public abstract class ManiaPlacementBlueprintTestScene : PlacementBlueprintTestScene
     {

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
 using osuTK.Graphics;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public abstract class ManiaSelectionBlueprintTestScene : SelectionBlueprintTestScene
     {

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.Configuration;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     [TestFixture]
     public class TestSceneEditor : EditorTestScene

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneHoldNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {

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

@@ -12,7 +12,7 @@ using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneHoldNoteSelectionBlueprint : ManiaSelectionBlueprintTestScene
     {

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

@@ -20,7 +20,7 @@ using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
 using osuTK;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneManiaBeatSnapGrid : EditorClockTestScene
     {

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

@@ -23,7 +23,7 @@ using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Input;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneManiaHitObjectComposer : EditorClockTestScene
     {

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

@@ -18,7 +18,7 @@ using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Input;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {

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

@@ -12,7 +12,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 using osuTK;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneNoteSelectionBlueprint : ManiaSelectionBlueprintTestScene
     {

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

@@ -14,11 +14,13 @@ using osu.Game.Tests.Beatmaps;
 namespace osu.Game.Rulesets.Mania.Tests
 {
     [TestFixture]
+    [Timeout(10000)]
     public class ManiaBeatmapConversionTest : BeatmapConversionTest<ManiaConvertMapping, ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
         [TestCase("basic")]
+        [TestCase("zero-length-slider")]
         public void Test(string name) => base.Test(name);
 
         protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)

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

@@ -23,6 +23,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath, new[] { typeof(ManiaModPerfect) })]
         [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath | LegacyMods.DoubleTime, new[] { typeof(ManiaModDoubleTime), typeof(ManiaModPerfect) })]
         [TestCase(LegacyMods.Random | LegacyMods.SuddenDeath, new[] { typeof(ManiaModRandom), typeof(ManiaModSuddenDeath) })]
+        [TestCase(LegacyMods.Flashlight | LegacyMods.Mirror, new[] { typeof(ManiaModFlashlight), typeof(ManiaModMirror) })]
         public new void Test(LegacyMods legacyMods, Type[] expectedMods) => base.Test(legacyMods, expectedMods);
 
         protected override Ruleset CreateRuleset() => new ManiaRuleset();

osu.Game.Rulesets.Mania.Tests/Skinning/ColumnTestContainer.cs

@@ -22,18 +22,22 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
         [Cached]
         private readonly Column column;
 
-        public ColumnTestContainer(int column, ManiaAction action)
+        public ColumnTestContainer(int column, ManiaAction action, bool showColumn = false)
         {
-            this.column = new Column(column)
+            InternalChildren = new[]
             {
-                Action = { Value = action },
-                AccentColour = Color4.Orange,
-                ColumnType = column % 2 == 0 ? ColumnType.Even : ColumnType.Odd
-            };
-
-            InternalChild = content = new ManiaInputManager(new ManiaRuleset().RulesetInfo, 4)
-            {
-                RelativeSizeAxes = Axes.Both
+                this.column = new Column(column)
+                {
+                    Action = { Value = action },
+                    AccentColour = Color4.Orange,
+                    ColumnType = column % 2 == 0 ? ColumnType.Even : ColumnType.Odd,
+                    Alpha = showColumn ? 1 : 0
+                },
+                content = new ManiaInputManager(new ManiaRuleset().RulesetInfo, 4)
+                {
+                    RelativeSizeAxes = Axes.Both
+                },
+                this.column.TopLevelContainer.CreateProxy()
             };
         }
     }

osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.cs

@@ -27,7 +27,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                 Direction = FillDirection.Horizontal,
                 Children = new Drawable[]
                 {
-                    new ColumnTestContainer(0, ManiaAction.Key1)
+                    new ColumnTestContainer(0, ManiaAction.Key1, true)
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
@@ -45,7 +45,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                             }));
                         })
                     },
-                    new ColumnTestContainer(1, ManiaAction.Key2)
+                    new ColumnTestContainer(1, ManiaAction.Key2, true)
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneStageBackground.cs

@@ -3,6 +3,7 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Skinning;
 
@@ -13,7 +14,8 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground), _ => new DefaultStageBackground())
+            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground, stageDefinition: new StageDefinition { Columns = 4 }),
+                _ => new DefaultStageBackground())
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneStageForeground.cs

@@ -3,6 +3,7 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
@@ -12,7 +13,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground), _ => null)
+            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground, stageDefinition: new StageDefinition { Columns = 4 }), _ => null)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,

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

@@ -45,9 +45,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
-            assertNoteJudgement(HitResult.Perfect);
+            assertNoteJudgement(HitResult.IgnoreHit);
         }
 
         /// <summary>
@@ -64,7 +64,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -82,7 +82,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -102,7 +102,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -122,7 +122,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Perfect);
         }
 
@@ -141,7 +141,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -161,7 +161,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -181,7 +181,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -199,7 +199,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -217,7 +217,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -235,7 +235,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -280,10 +280,10 @@ namespace osu.Game.Rulesets.Mania.Tests
             }, beatmap);
 
             AddAssert("first hold note missed", () => judgementResults.Where(j => beatmap.HitObjects[0].NestedHitObjects.Contains(j.HitObject))
-                                                                      .All(j => j.Type == HitResult.Miss));
+                                                                      .All(j => !j.Type.IsHit()));
 
             AddAssert("second hold note missed", () => judgementResults.Where(j => beatmap.HitObjects[1].NestedHitObjects.Contains(j.HitObject))
-                                                                       .All(j => j.Type == HitResult.Perfect));
+                                                                       .All(j => j.Type.IsHit()));
         }
 
         private void assertHeadJudgement(HitResult result)

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

@@ -0,0 +1,117 @@
+// 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.TypeExtensions;
+using osu.Framework.Screens;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Replays;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.Replays;
+using osu.Game.Rulesets.Replays;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+using osu.Game.Screens.Play;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    public class TestSceneOutOfOrderHits : RateAdjustedBeatmapTestScene
+    {
+        [Test]
+        public void TestPreviousHitWindowDoesNotExtendPastNextObject()
+        {
+            var objects = new List<ManiaHitObject>();
+            var frames = new List<ReplayFrame>();
+
+            for (int i = 0; i < 7; i++)
+            {
+                double time = 1000 + i * 100;
+
+                objects.Add(new Note { StartTime = time });
+
+                if (i > 0)
+                {
+                    frames.Add(new ManiaReplayFrame(time + 10, ManiaAction.Key1));
+                    frames.Add(new ManiaReplayFrame(time + 11));
+                }
+            }
+
+            performTest(objects, frames);
+
+            addJudgementAssert(objects[0], HitResult.Miss);
+
+            for (int i = 1; i < 7; i++)
+            {
+                addJudgementAssert(objects[i], HitResult.Perfect);
+                addJudgementOffsetAssert(objects[i], 10);
+            }
+        }
+
+        private void addJudgementAssert(ManiaHitObject hitObject, HitResult result)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject).Type == result);
+        }
+
+        private void addJudgementOffsetAssert(ManiaHitObject hitObject, double offset)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judged at {offset}",
+                () => Precision.AlmostEquals(judgementResults.Single(r => r.HitObject == hitObject).TimeOffset, offset, 100));
+        }
+
+        private ScoreAccessibleReplayPlayer currentPlayer;
+        private List<JudgementResult> judgementResults;
+
+        private void performTest(List<ManiaHitObject> hitObjects, List<ReplayFrame> frames)
+        {
+            AddStep("load player", () =>
+            {
+                Beatmap.Value = CreateWorkingBeatmap(new ManiaBeatmap(new StageDefinition { Columns = 4 })
+                {
+                    HitObjects = hitObjects,
+                    BeatmapInfo =
+                    {
+                        Ruleset = new ManiaRuleset().RulesetInfo
+                    },
+                });
+
+                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
+
+                var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
+
+                p.OnLoadComplete += _ =>
+                {
+                    p.ScoreProcessor.NewJudgement += result =>
+                    {
+                        if (currentPlayer == p) judgementResults.Add(result);
+                    };
+                };
+
+                LoadScreen(currentPlayer = p);
+                judgementResults = new List<JudgementResult>();
+            });
+
+            AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
+            AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
+        }
+
+        private class ScoreAccessibleReplayPlayer : ReplayPlayer
+        {
+            public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
+
+            protected override bool PauseOnFocusLost => false;
+
+            public ScoreAccessibleReplayPlayer(Score score)
+                : base(score, false, false)
+            {
+            }
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/osu.Game.Rulesets.Mania.Tests.csproj

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

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

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.UI;
@@ -41,14 +40,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 new BeatmapStatistic
                 {
                     Name = @"Note Count",
+                    CreateIcon = () => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Circles),
                     Content = notes.ToString(),
-                    Icon = FontAwesome.Regular.Circle
                 },
                 new BeatmapStatistic
                 {
                     Name = @"Hold Note Count",
+                    CreateIcon = () => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders),
                     Content = holdnotes.ToString(),
-                    Icon = FontAwesome.Regular.Circle
                 },
             };
         }

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

@@ -5,7 +5,7 @@ using osu.Game.Rulesets.Mania.Objects;
 using System;
 using System.Linq;
 using System.Collections.Generic;
-using osu.Framework.Utils;
+using System.Threading;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -69,14 +69,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
         public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
-        protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original)
+        protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original, CancellationToken cancellationToken)
         {
             BeatmapDifficulty difficulty = original.BeatmapInfo.BaseDifficulty;
 
             int seed = (int)MathF.Round(difficulty.DrainRate + difficulty.CircleSize) * 20 + (int)(difficulty.OverallDifficulty * 41.2) + (int)MathF.Round(difficulty.ApproachRate);
             Random = new FastRandom(seed);
 
-            return base.ConvertBeatmap(original);
+            return base.ConvertBeatmap(original, cancellationToken);
         }
 
         protected override Beatmap<ManiaHitObject> CreateBeatmap()
@@ -89,7 +89,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             return beatmap;
         }
 
-        protected override IEnumerable<ManiaHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap)
+        protected override IEnumerable<ManiaHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap, CancellationToken cancellationToken)
         {
             if (original is ManiaHitObject maniaOriginal)
             {
@@ -167,8 +167,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                     var positionData = original as IHasPosition;
 
-                    for (double time = original.StartTime; !Precision.DefinitelyBigger(time, generator.EndTime); time += generator.SegmentDuration)
+                    for (int i = 0; i <= generator.SpanCount; i++)
                     {
+                        double time = original.StartTime + generator.SegmentDuration * i;
+
                         recordNote(time, positionData?.Position ?? Vector2.Zero);
                         computeDensity(time);
                     }

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

@@ -27,8 +27,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
         public readonly double EndTime;
         public readonly double SegmentDuration;
-
-        private readonly int spanCount;
+        public readonly int SpanCount;
 
         private PatternType convertType;
 
@@ -42,20 +41,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var distanceData = hitObject as IHasDistance;
             var repeatsData = hitObject as IHasRepeats;
 
-            spanCount = repeatsData?.SpanCount() ?? 1;
+            SpanCount = repeatsData?.SpanCount() ?? 1;
 
             TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
             DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
 
             // The true distance, accounting for any repeats
-            double distance = (distanceData?.Distance ?? 0) * spanCount;
+            double distance = (distanceData?.Distance ?? 0) * SpanCount;
             // The velocity of the osu! hit object - calculated as the velocity of a slider
             double osuVelocity = osu_base_scoring_distance * beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier / timingPoint.BeatLength;
             // The duration of the osu! hit object
             double osuDuration = distance / osuVelocity;
 
             EndTime = hitObject.StartTime + osuDuration;
-            SegmentDuration = (EndTime - HitObject.StartTime) / spanCount;
+            SegmentDuration = (EndTime - HitObject.StartTime) / SpanCount;
         }
 
         public override IEnumerable<Pattern> Generate()
@@ -96,7 +95,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 return pattern;
             }
 
-            if (spanCount > 1)
+            if (SpanCount > 1)
             {
                 if (SegmentDuration <= 90)
                     return generateRandomHoldNotes(HitObject.StartTime, 1);
@@ -104,7 +103,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 if (SegmentDuration <= 120)
                 {
                     convertType |= PatternType.ForceNotStack;
-                    return generateRandomNotes(HitObject.StartTime, spanCount + 1);
+                    return generateRandomNotes(HitObject.StartTime, SpanCount + 1);
                 }
 
                 if (SegmentDuration <= 160)
@@ -117,7 +116,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 if (duration >= 4000)
                     return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
 
-                if (SegmentDuration > 400 && spanCount < TotalColumns - 1 - RandomStart)
+                if (SegmentDuration > 400 && SpanCount < TotalColumns - 1 - RandomStart)
                     return generateTiledHoldNotes(HitObject.StartTime);
 
                 return generateHoldAndNormalNotes(HitObject.StartTime);
@@ -251,7 +250,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             int column = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
             bool increasing = Random.NextDouble() > 0.5;
 
-            for (int i = 0; i <= spanCount; i++)
+            for (int i = 0; i <= SpanCount; i++)
             {
                 addToPattern(pattern, column, startTime, startTime);
                 startTime += SegmentDuration;
@@ -302,7 +301,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
 
-            for (int i = 0; i <= spanCount; i++)
+            for (int i = 0; i <= SpanCount; i++)
             {
                 addToPattern(pattern, nextColumn, startTime, startTime);
 
@@ -393,7 +392,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             var pattern = new Pattern();
 
-            int columnRepeat = Math.Min(spanCount, TotalColumns);
+            int columnRepeat = Math.Min(SpanCount, TotalColumns);
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
             if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
@@ -447,7 +446,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             var rowPattern = new Pattern();
 
-            for (int i = 0; i <= spanCount; i++)
+            for (int i = 0; i <= SpanCount; i++)
             {
                 if (!(ignoreHead && startTime == HitObject.StartTime))
                 {

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

@@ -21,14 +21,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         /// </summary>
         /// <param name="column">The 0-based column index.</param>
         /// <returns>Whether the column is a special column.</returns>
-        public bool IsSpecialColumn(int column) => Columns % 2 == 1 && column == Columns / 2;
+        public readonly bool IsSpecialColumn(int column) => Columns % 2 == 1 && column == Columns / 2;
 
         /// <summary>
         /// Get the type of column given a column index.
         /// </summary>
         /// <param name="column">The 0-based column index.</param>
         /// <returns>The type of the column.</returns>
-        public ColumnType GetTypeOfColumn(int column)
+        public readonly ColumnType GetTypeOfColumn(int column)
         {
             if (IsSpecialColumn(column))
                 return ColumnType.Special;

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

@@ -20,7 +20,7 @@ namespace osu.Game.Rulesets.Mania.Configuration
         {
             base.InitialiseDefaults();
 
-            Set(ManiaRulesetSetting.ScrollTime, 1500.0, DrawableManiaRuleset.MIN_TIME_RANGE, DrawableManiaRuleset.MAX_TIME_RANGE, 1);
+            Set(ManiaRulesetSetting.ScrollTime, 1500.0, DrawableManiaRuleset.MIN_TIME_RANGE, DrawableManiaRuleset.MAX_TIME_RANGE, 5);
             Set(ManiaRulesetSetting.ScrollDirection, ManiaScrollingDirection.Down);
         }
 

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

@@ -11,6 +11,7 @@ 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.Mods;
+using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
@@ -43,6 +44,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty
                 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,
+                MaxCombo = beatmap.HitObjects.Sum(h => h is HoldNote ? 2 : 1),
                 Skills = skills
             };
         }

osu.Game.Rulesets.Mania/Edit/HoldNoteCompositionTool.cs

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
@@ -14,6 +16,8 @@ namespace osu.Game.Rulesets.Mania.Edit
         {
         }
 
+        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders);
+
         public override PlacementBlueprint CreatePlacementBlueprint() => new HoldNotePlacementBlueprint();
     }
 }

osu.Game.Rulesets.Mania/Edit/NoteCompositionTool.cs

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
@@ -15,6 +17,8 @@ namespace osu.Game.Rulesets.Mania.Edit
         {
         }
 
+        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Circles);
+
         public override PlacementBlueprint CreatePlacementBlueprint() => new NotePlacementBlueprint();
     }
 }

osu.Game.Rulesets.Mania/Judgements/HoldNoteTickJudgement.cs

@@ -7,18 +7,6 @@ namespace osu.Game.Rulesets.Mania.Judgements
 {
     public class HoldNoteTickJudgement : ManiaJudgement
     {
-        protected override int NumericResultFor(HitResult result) => result == MaxResult ? 20 : 0;
-
-        protected override double HealthIncreaseFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 0.01;
-            }
-        }
+        public override HitResult MaxResult => HitResult.LargeTickHit;
     }
 }

osu.Game.Rulesets.Mania/Judgements/ManiaJudgement.cs

@@ -2,34 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Judgements;
-using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Judgements
 {
     public class ManiaJudgement : Judgement
     {
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Meh:
-                    return 50;
-
-                case HitResult.Ok:
-                    return 100;
-
-                case HitResult.Good:
-                    return 200;
-
-                case HitResult.Great:
-                    return 300;
-
-                case HitResult.Perfect:
-                    return 350;
-            }
-        }
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -12,7 +12,6 @@ using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
-using osu.Framework.Testing;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mania.Replays;
 using osu.Game.Rulesets.Replays.Types;
@@ -35,7 +34,6 @@ using osu.Game.Screens.Ranking.Statistics;
 
 namespace osu.Game.Rulesets.Mania
 {
-    [ExcludeFromDynamicCompile]
     public class ManiaRuleset : Ruleset, ILegacyRuleset
     {
         /// <summary>
@@ -126,6 +124,9 @@ namespace osu.Game.Rulesets.Mania
 
             if (mods.HasFlag(LegacyMods.Random))
                 yield return new ManiaModRandom();
+
+            if (mods.HasFlag(LegacyMods.Mirror))
+                yield return new ManiaModMirror();
         }
 
         public override LegacyMods ConvertToLegacyMods(Mod[] mods)
@@ -175,6 +176,10 @@ namespace osu.Game.Rulesets.Mania
                     case ManiaModFadeIn _:
                         value |= LegacyMods.FadeIn;
                         break;
+
+                    case ManiaModMirror _:
+                        value |= LegacyMods.Mirror;
+                        break;
                 }
             }
 
@@ -326,6 +331,16 @@ namespace osu.Game.Rulesets.Mania
                         Height = 250
                     }),
                 }
+            },
+            new StatisticRow
+            {
+                Columns = new[]
+                {
+                    new StatisticItem(string.Empty, new SimpleStatisticTable(3, new SimpleStatisticItem[]
+                    {
+                        new UnstableRate(score.HitEvents)
+                    }))
+                }
             }
         };
     }

osu.Game.Rulesets.Mania/ManiaSettingsSubsection.cs

@@ -34,7 +34,8 @@ namespace osu.Game.Rulesets.Mania
                 new SettingsSlider<double, TimeSlider>
                 {
                     LabelText = "Scroll speed",
-                    Bindable = config.GetBindable<double>(ManiaRulesetSetting.ScrollTime)
+                    Bindable = config.GetBindable<double>(ManiaRulesetSetting.ScrollTime),
+                    KeyboardStep = 5
                 },
             };
         }

osu.Game.Rulesets.Mania/ManiaSkinComponent.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 osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Skinning;
 
@@ -14,15 +15,23 @@ namespace osu.Game.Rulesets.Mania
         /// </summary>
         public readonly int? TargetColumn;
 
+        /// <summary>
+        /// The intended <see cref="StageDefinition"/> for this component.
+        /// May be null if the component is not a direct member of a <see cref="Stage"/>.
+        /// </summary>
+        public readonly StageDefinition? StageDefinition;
+
         /// <summary>
         /// Creates a new <see cref="ManiaSkinComponent"/>.
         /// </summary>
         /// <param name="component">The component.</param>
         /// <param name="targetColumn">The intended <see cref="Column"/> index for this component. May be null if the component does not exist in a <see cref="Column"/>.</param>
-        public ManiaSkinComponent(ManiaSkinComponents component, int? targetColumn = null)
+        /// <param name="stageDefinition">The intended <see cref="StageDefinition"/> for this component. May be null if the component is not a direct member of a <see cref="Stage"/>.</param>
+        public ManiaSkinComponent(ManiaSkinComponents component, int? targetColumn = null, StageDefinition? stageDefinition = null)
             : base(component)
         {
             TargetColumn = targetColumn;
+            StageDefinition = stageDefinition;
         }
 
         protected override string RulesetPrefix => ManiaRuleset.SHORT_NAME;

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs

@@ -238,7 +238,10 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         protected override void CheckForResult(bool userTriggered, double timeOffset)
         {
             if (Tail.AllJudged)
-                ApplyResult(r => r.Type = HitResult.Perfect);
+            {
+                ApplyResult(r => r.Type = r.Judgement.MaxResult);
+                endHold();
+            }
 
             if (Tail.Result.Type == HitResult.Miss)
                 HasBroken = true;
@@ -252,6 +255,9 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             if (action != Action.Value)
                 return false;
 
+            if (CheckHittable?.Invoke(this, Time.Current) == false)
+                return false;
+
             // The tail has a lenience applied to it which is factored into the miss window (i.e. the miss judgement will be delayed).
             // But the hold cannot ever be started within the late-lenience window, so we should skip trying to begin the hold during that time.
             // Note: Unlike below, we use the tail's start time to determine the time offset.

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNoteTick.cs

@@ -8,7 +8,6 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -17,6 +16,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     /// </summary>
     public class DrawableHoldNoteTick : DrawableManiaHitObject<HoldNoteTick>
     {
+        public override bool DisplayResult => false;
+
         /// <summary>
         /// References the time at which the user started holding the hold note.
         /// </summary>
@@ -73,9 +74,9 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             var startTime = HoldStartTime?.Invoke();
 
             if (startTime == null || startTime > HitObject.StartTime)
-                ApplyResult(r => r.Type = HitResult.Miss);
+                ApplyResult(r => r.Type = r.Judgement.MinResult);
             else
-                ApplyResult(r => r.Type = HitResult.Perfect);
+                ApplyResult(r => r.Type = r.Judgement.MaxResult);
         }
     }
 }

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableManiaHitObject.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 JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -8,6 +9,7 @@ using osu.Framework.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -34,6 +36,12 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             }
         }
 
+        /// <summary>
+        /// Whether this <see cref="DrawableManiaHitObject"/> can be hit, given a time value.
+        /// If non-null, judgements will be ignored whilst the function returns false.
+        /// </summary>
+        public Func<DrawableHitObject, double, bool> CheckHittable;
+
         protected DrawableManiaHitObject(ManiaHitObject hitObject)
             : base(hitObject)
         {
@@ -124,6 +132,11 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                     break;
             }
         }
+
+        /// <summary>
+        /// Causes this <see cref="DrawableManiaHitObject"/> to get missed, disregarding all conditions in implementations of <see cref="DrawableHitObject.CheckForResult"/>.
+        /// </summary>
+        public void MissForcefully() => ApplyResult(r => r.Type = HitResult.Miss);
     }
 
     public abstract class DrawableManiaHitObject<TObject> : DrawableManiaHitObject

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableNote.cs

@@ -64,6 +64,9 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             if (action != Action.Value)
                 return false;
 
+            if (CheckHittable?.Invoke(this, Time.Current) == false)
+                return false;
+
             return UpdateResult(true);
         }
 

osu.Game.Rulesets.Mania/Replays/ManiaAutoGenerator.cs

@@ -46,6 +46,9 @@ namespace osu.Game.Rulesets.Mania.Replays
 
         public override Replay Generate()
         {
+            if (Beatmap.HitObjects.Count == 0)
+                return Replay;
+
             var pointGroups = generateActionPoints().GroupBy(a => a.Time).OrderBy(g => g.First().Time);
 
             var actions = new List<ManiaAction>();

osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/zero-length-slider-expected-conversion.json

@@ -0,0 +1,14 @@
+{
+    "Mappings": [{
+        "RandomW": 3083084786,
+        "RandomX": 273326509,
+        "RandomY": 273553282,
+        "RandomZ": 2659838971,
+        "StartTime": 4836,
+        "Objects": [{
+            "StartTime": 4836,
+            "EndTime": 4836,
+            "Column": 0
+        }]
+    }]
+}

osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/zero-length-slider.osu

@@ -0,0 +1,20 @@
+osu file format v14
+
+[General]
+StackLeniency: 0.7
+Mode: 0
+
+[Difficulty]
+HPDrainRate:1
+CircleSize:4
+OverallDifficulty:1
+ApproachRate:9
+SliderMultiplier:2.5
+SliderTickRate:0.5
+
+[TimingPoints]
+34,431.654676258993,4,1,0,50,1,0
+4782,-66.6666666666667,4,1,0,20,0,0
+
+[HitObjects]
+15,199,4836,22,0,L,1,46.8750017881394

osu.Game.Rulesets.Mania/Scoring/ManiaScoreProcessor.cs

@@ -10,7 +10,5 @@ namespace osu.Game.Rulesets.Mania.Scoring
         protected override double DefaultAccuracyPortion => 0.95;
 
         protected override double DefaultComboPortion => 0.05;
-
-        public override HitWindows CreateHitWindows() => new ManiaHitWindows();
     }
 }

osu.Game.Rulesets.Mania/Skinning/HitTargetInsetContainer.cs

@@ -0,0 +1,46 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Skinning;
+
+namespace osu.Game.Rulesets.Mania.Skinning
+{
+    public class HitTargetInsetContainer : Container
+    {
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        protected override Container<Drawable> Content => content;
+        private readonly Container content;
+
+        private float hitPosition;
+
+        public HitTargetInsetContainer()
+        {
+            RelativeSizeAxes = Axes.Both;
+
+            InternalChild = content = new Container { RelativeSizeAxes = Axes.Both };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
+        {
+            hitPosition = skin.GetManiaSkinConfig<float>(LegacyManiaSkinConfigurationLookups.HitPosition)?.Value ?? Stage.HIT_TARGET_POSITION;
+
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(onDirectionChanged, true);
+        }
+
+        private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
+        {
+            content.Padding = direction.NewValue == ScrollingDirection.Up
+                ? new MarginPadding { Top = hitPosition }
+                : new MarginPadding { Bottom = hitPosition };
+        }
+    }
+}

osu.Game.Rulesets.Mania/Skinning/LegacyBodyPiece.cs

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -19,7 +21,14 @@ namespace osu.Game.Rulesets.Mania.Skinning
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
         private readonly IBindable<bool> isHitting = new Bindable<bool>();
 
-        private Drawable sprite;
+        [CanBeNull]
+        private Drawable bodySprite;
+
+        [CanBeNull]
+        private Drawable lightContainer;
+
+        [CanBeNull]
+        private Drawable light;
 
         public LegacyBodyPiece()
         {
@@ -32,7 +41,39 @@ namespace osu.Game.Rulesets.Mania.Skinning
             string imageName = GetColumnSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.HoldNoteBodyImage)?.Value
                                ?? $"mania-note{FallbackColumnIndex}L";
 
-            sprite = skin.GetAnimation(imageName, WrapMode.ClampToEdge, WrapMode.ClampToEdge, true, true).With(d =>
+            string lightImage = GetColumnSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.HoldNoteLightImage)?.Value
+                                ?? "lightingL";
+
+            float lightScale = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.HoldNoteLightScale)?.Value
+                               ?? 1;
+
+            // Create a temporary animation to retrieve the number of frames, in an effort to calculate the intended frame length.
+            // This animation is discarded and re-queried with the appropriate frame length afterwards.
+            var tmp = skin.GetAnimation(lightImage, true, false);
+            double frameLength = 0;
+            if (tmp is IFramedAnimation tmpAnimation && tmpAnimation.FrameCount > 0)
+                frameLength = Math.Max(1000 / 60.0, 170.0 / tmpAnimation.FrameCount);
+
+            light = skin.GetAnimation(lightImage, true, true, frameLength: frameLength).With(d =>
+            {
+                if (d == null)
+                    return;
+
+                d.Origin = Anchor.Centre;
+                d.Blending = BlendingParameters.Additive;
+                d.Scale = new Vector2(lightScale);
+            });
+
+            if (light != null)
+            {
+                lightContainer = new HitTargetInsetContainer
+                {
+                    Alpha = 0,
+                    Child = light
+                };
+            }
+
+            bodySprite = skin.GetAnimation(imageName, WrapMode.ClampToEdge, WrapMode.ClampToEdge, true, true).With(d =>
             {
                 if (d == null)
                     return;
@@ -47,8 +88,8 @@ namespace osu.Game.Rulesets.Mania.Skinning
                 // Todo: Wrap
             });
 
-            if (sprite != null)
-                InternalChild = sprite;
+            if (bodySprite != null)
+                InternalChild = bodySprite;
 
             direction.BindTo(scrollingInfo.Direction);
             direction.BindValueChanged(onDirectionChanged, true);
@@ -60,28 +101,68 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
         private void onIsHittingChanged(ValueChangedEvent<bool> isHitting)
         {
-            if (!(sprite is TextureAnimation animation))
+            if (bodySprite is TextureAnimation bodyAnimation)
+            {
+                bodyAnimation.GotoFrame(0);
+                bodyAnimation.IsPlaying = isHitting.NewValue;
+            }
+
+            if (lightContainer == null)
                 return;
 
-            animation.GotoFrame(0);
-            animation.IsPlaying = isHitting.NewValue;
+            if (isHitting.NewValue)
+            {
+                // Clear the fade out and, more importantly, the removal.
+                lightContainer.ClearTransforms();
+
+                // Only add the container if the removal has taken place.
+                if (lightContainer.Parent == null)
+                    Column.TopLevelContainer.Add(lightContainer);
+
+                // The light must be seeked only after being loaded, otherwise a nullref occurs (https://github.com/ppy/osu-framework/issues/3847).
+                if (light is TextureAnimation lightAnimation)
+                    lightAnimation.GotoFrame(0);
+
+                lightContainer.FadeIn(80);
+            }
+            else
+            {
+                lightContainer.FadeOut(120)
+                              .OnComplete(d => Column.TopLevelContainer.Remove(d));
+            }
         }
 
         private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
         {
-            if (sprite == null)
-                return;
-
             if (direction.NewValue == ScrollingDirection.Up)
             {
-                sprite.Origin = Anchor.BottomCentre;
-                sprite.Scale = new Vector2(1, -1);
+                if (bodySprite != null)
+                {
+                    bodySprite.Origin = Anchor.BottomCentre;
+                    bodySprite.Scale = new Vector2(1, -1);
+                }
+
+                if (light != null)
+                    light.Anchor = Anchor.TopCentre;
             }
             else
             {
-                sprite.Origin = Anchor.TopCentre;
-                sprite.Scale = Vector2.One;
+                if (bodySprite != null)
+                {
+                    bodySprite.Origin = Anchor.TopCentre;
+                    bodySprite.Scale = Vector2.One;
+                }
+
+                if (light != null)
+                    light.Anchor = Anchor.BottomCentre;
             }
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            lightContainer?.Expire();
+        }
     }
 }

osu.Game.Rulesets.Mania/Skinning/LegacyColumnBackground.cs

@@ -5,10 +5,8 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
-using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
 using osuTK;
@@ -19,17 +17,12 @@ namespace osu.Game.Rulesets.Mania.Skinning
     public class LegacyColumnBackground : LegacyManiaColumnElement, IKeyBindingHandler<ManiaAction>
     {
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
-        private readonly bool isLastColumn;
 
-        private Container borderLineContainer;
         private Container lightContainer;
         private Sprite light;
 
-        private float hitPosition;
-
-        public LegacyColumnBackground(bool isLastColumn)
+        public LegacyColumnBackground()
         {
-            this.isLastColumn = isLastColumn;
             RelativeSizeAxes = Axes.Both;
         }
 
@@ -39,62 +32,14 @@ namespace osu.Game.Rulesets.Mania.Skinning
             string lightImage = skin.GetManiaSkinConfig<string>(LegacyManiaSkinConfigurationLookups.LightImage)?.Value
                                 ?? "mania-stage-light";
 
-            float leftLineWidth = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.LeftLineWidth)
-                ?.Value ?? 1;
-            float rightLineWidth = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.RightLineWidth)
-                ?.Value ?? 1;
-
-            bool hasLeftLine = leftLineWidth > 0;
-            bool hasRightLine = rightLineWidth > 0 && skin.GetConfig<LegacySkinConfiguration.LegacySetting, decimal>(LegacySkinConfiguration.LegacySetting.Version)?.Value >= 2.4m
-                                || isLastColumn;
-
-            hitPosition = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.HitPosition)?.Value
-                          ?? Stage.HIT_TARGET_POSITION;
-
             float lightPosition = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.LightPosition)?.Value
                                   ?? 0;
 
-            Color4 lineColour = GetColumnSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLineColour)?.Value
-                                ?? Color4.White;
-
-            Color4 backgroundColour = GetColumnSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour)?.Value
-                                      ?? Color4.Black;
-
             Color4 lightColour = GetColumnSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLightColour)?.Value
                                  ?? Color4.White;
 
-            InternalChildren = new Drawable[]
+            InternalChildren = new[]
             {
-                new Box
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Colour = backgroundColour
-                },
-                borderLineContainer = new Container
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Children = new[]
-                    {
-                        new Box
-                        {
-                            RelativeSizeAxes = Axes.Y,
-                            Width = leftLineWidth,
-                            Scale = new Vector2(0.740f, 1),
-                            Colour = lineColour,
-                            Alpha = hasLeftLine ? 1 : 0
-                        },
-                        new Box
-                        {
-                            Anchor = Anchor.TopRight,
-                            Origin = Anchor.TopRight,
-                            RelativeSizeAxes = Axes.Y,
-                            Width = rightLineWidth,
-                            Scale = new Vector2(0.740f, 1),
-                            Colour = lineColour,
-                            Alpha = hasRightLine ? 1 : 0
-                        }
-                    }
-                },
                 lightContainer = new Container
                 {
                     Origin = Anchor.BottomCentre,
@@ -104,7 +49,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     {
                         Anchor = Anchor.BottomCentre,
                         Origin = Anchor.BottomCentre,
-                        Colour = lightColour,
+                        Colour = LegacyColourCompatibility.DisallowZeroAlpha(lightColour),
                         Texture = skin.GetTexture(lightImage),
                         RelativeSizeAxes = Axes.X,
                         Width = 1,
@@ -123,15 +68,11 @@ namespace osu.Game.Rulesets.Mania.Skinning
             {
                 lightContainer.Anchor = Anchor.TopCentre;
                 lightContainer.Scale = new Vector2(1, -1);
-
-                borderLineContainer.Padding = new MarginPadding { Top = hitPosition };
             }
             else
             {
                 lightContainer.Anchor = Anchor.BottomCentre;
                 lightContainer.Scale = Vector2.One;
-
-                borderLineContainer.Padding = new MarginPadding { Bottom = hitPosition };
             }
         }
 

osu.Game.Rulesets.Mania/Skinning/LegacyHitTarget.cs

@@ -20,11 +20,6 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
         private Container directionContainer;
 
-        public LegacyHitTarget()
-        {
-            RelativeSizeAxes = Axes.Both;
-        }
-
         [BackgroundDependencyLoader]
         private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
         {
@@ -56,7 +51,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                         Anchor = Anchor.CentreLeft,
                         RelativeSizeAxes = Axes.X,
                         Height = 1,
-                        Colour = lineColour,
+                        Colour = LegacyColourCompatibility.DisallowZeroAlpha(lineColour),
                         Alpha = showJudgementLine ? 0.9f : 0
                     }
                 }

osu.Game.Rulesets.Mania/Skinning/LegacyKeyArea.cs

@@ -65,6 +65,9 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
             direction.BindTo(scrollingInfo.Direction);
             direction.BindValueChanged(onDirectionChanged, true);
+
+            if (GetColumnSkinConfig<bool>(skin, LegacyManiaSkinConfigurationLookups.KeysUnderNotes)?.Value ?? false)
+                Column.UnderlayElements.Add(CreateProxy());
         }
 
         private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)

osu.Game.Rulesets.Mania/Skinning/LegacyStageBackground.cs

@@ -4,19 +4,27 @@
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Skinning;
 using osuTK;
+using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning
 {
     public class LegacyStageBackground : CompositeDrawable
     {
+        private readonly StageDefinition stageDefinition;
+
         private Drawable leftSprite;
         private Drawable rightSprite;
+        private ColumnFlow<Drawable> columnBackgrounds;
 
-        public LegacyStageBackground()
+        public LegacyStageBackground(StageDefinition stageDefinition)
         {
+            this.stageDefinition = stageDefinition;
             RelativeSizeAxes = Axes.Both;
         }
 
@@ -44,8 +52,19 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     Origin = Anchor.TopLeft,
                     X = -0.05f,
                     Texture = skin.GetTexture(rightImage)
+                },
+                columnBackgrounds = new ColumnFlow<Drawable>(stageDefinition)
+                {
+                    RelativeSizeAxes = Axes.Y
+                },
+                new HitTargetInsetContainer
+                {
+                    Child = new LegacyHitTarget { RelativeSizeAxes = Axes.Both }
                 }
             };
+
+            for (int i = 0; i < stageDefinition.Columns; i++)
+                columnBackgrounds.SetContentForColumn(i, new ColumnBackground(i, i == stageDefinition.Columns - 1));
         }
 
         protected override void Update()
@@ -58,5 +77,72 @@ namespace osu.Game.Rulesets.Mania.Skinning
             if (rightSprite?.Height > 0)
                 rightSprite.Scale = new Vector2(1, DrawHeight / rightSprite.Height);
         }
+
+        private class ColumnBackground : CompositeDrawable
+        {
+            private readonly int columnIndex;
+            private readonly bool isLastColumn;
+
+            public ColumnBackground(int columnIndex, bool isLastColumn)
+            {
+                this.columnIndex = columnIndex;
+                this.isLastColumn = isLastColumn;
+
+                RelativeSizeAxes = Axes.Both;
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(ISkinSource skin)
+            {
+                float leftLineWidth = skin.GetManiaSkinConfig<float>(LegacyManiaSkinConfigurationLookups.LeftLineWidth, columnIndex)?.Value ?? 1;
+                float rightLineWidth = skin.GetManiaSkinConfig<float>(LegacyManiaSkinConfigurationLookups.RightLineWidth, columnIndex)?.Value ?? 1;
+
+                bool hasLeftLine = leftLineWidth > 0;
+                bool hasRightLine = rightLineWidth > 0 && skin.GetConfig<LegacySkinConfiguration.LegacySetting, decimal>(LegacySkinConfiguration.LegacySetting.Version)?.Value >= 2.4m
+                                    || isLastColumn;
+
+                Color4 lineColour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ColumnLineColour, columnIndex)?.Value ?? Color4.White;
+                Color4 backgroundColour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour, columnIndex)?.Value ?? Color4.Black;
+
+                InternalChildren = new Drawable[]
+                {
+                    LegacyColourCompatibility.ApplyWithDoubledAlpha(new Box
+                    {
+                        RelativeSizeAxes = Axes.Both
+                    }, backgroundColour),
+                    new HitTargetInsetContainer
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Children = new[]
+                        {
+                            new Container
+                            {
+                                RelativeSizeAxes = Axes.Y,
+                                Width = leftLineWidth,
+                                Scale = new Vector2(0.740f, 1),
+                                Alpha = hasLeftLine ? 1 : 0,
+                                Child = LegacyColourCompatibility.ApplyWithDoubledAlpha(new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both
+                                }, lineColour)
+                            },
+                            new Container
+                            {
+                                Anchor = Anchor.TopRight,
+                                Origin = Anchor.TopRight,
+                                RelativeSizeAxes = Axes.Y,
+                                Width = rightLineWidth,
+                                Scale = new Vector2(0.740f, 1),
+                                Alpha = hasRightLine ? 1 : 0,
+                                Child = LegacyColourCompatibility.ApplyWithDoubledAlpha(new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both
+                                }, lineColour)
+                            },
+                        }
+                    }
+                };
+            }
+        }
     }
 }

osu.Game.Rulesets.Mania/Skinning/ManiaLegacySkinTransformer.cs

@@ -9,6 +9,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Skinning;
 using System.Collections.Generic;
+using System.Diagnostics;
 using osu.Framework.Audio.Sample;
 using osu.Game.Audio;
 using osu.Game.Rulesets.Objects.Legacy;
@@ -88,10 +89,12 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     switch (maniaComponent.Component)
                     {
                         case ManiaSkinComponents.ColumnBackground:
-                            return new LegacyColumnBackground(maniaComponent.TargetColumn == beatmap.TotalColumns - 1);
+                            return new LegacyColumnBackground();
 
                         case ManiaSkinComponents.HitTarget:
-                            return new LegacyHitTarget();
+                            // Legacy skins sandwich the hit target between the column background and the column light.
+                            // To preserve this ordering, it's created manually inside LegacyStageBackground.
+                            return Drawable.Empty();
 
                         case ManiaSkinComponents.KeyArea:
                             return new LegacyKeyArea();
@@ -112,7 +115,8 @@ namespace osu.Game.Rulesets.Mania.Skinning
                             return new LegacyHitExplosion();
 
                         case ManiaSkinComponents.StageBackground:
-                            return new LegacyStageBackground();
+                            Debug.Assert(maniaComponent.StageDefinition != null);
+                            return new LegacyStageBackground(maniaComponent.StageDefinition.Value);
 
                         case ManiaSkinComponents.StageForeground:
                             return new LegacyStageForeground();
@@ -126,6 +130,9 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
         private Drawable getResult(HitResult result)
         {
+            if (!hitresult_mapping.ContainsKey(result))
+                return null;
+
             string filename = this.GetManiaSkinConfig<string>(hitresult_mapping[result])?.Value
                               ?? default_hitresult_skin_filenames[result];
 

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

@@ -17,6 +17,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
 using osuTK;
 using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -36,6 +37,7 @@ namespace osu.Game.Rulesets.Mania.UI
         public readonly ColumnHitObjectArea HitObjectArea;
         internal readonly Container TopLevelContainer;
         private readonly DrawablePool<PoolableHitExplosion> hitExplosionPool;
+        private readonly OrderedHitPolicy hitPolicy;
 
         public Container UnderlayElements => HitObjectArea.UnderlayElements;
 
@@ -65,11 +67,11 @@ namespace osu.Game.Rulesets.Mania.UI
                 TopLevelContainer = new Container { RelativeSizeAxes = Axes.Both }
             };
 
+            hitPolicy = new OrderedHitPolicy(HitObjectContainer);
+
             TopLevelContainer.Add(HitObjectArea.Explosions.CreateProxy());
         }
 
-        public override Axes RelativeSizeAxes => Axes.Y;
-
         public ColumnType ColumnType { get; set; }
 
         public bool IsSpecial => ColumnType == ColumnType.Special;
@@ -92,6 +94,9 @@ namespace osu.Game.Rulesets.Mania.UI
             hitObject.AccentColour.Value = AccentColour;
             hitObject.OnNewResult += OnNewResult;
 
+            DrawableManiaHitObject maniaObject = (DrawableManiaHitObject)hitObject;
+            maniaObject.CheckHittable = hitPolicy.IsHittable;
+
             HitObjectContainer.Add(hitObject);
         }
 
@@ -106,7 +111,10 @@ namespace osu.Game.Rulesets.Mania.UI
 
         internal void OnNewResult(DrawableHitObject judgedObject, JudgementResult result)
         {
-            if (!result.IsHit || !judgedObject.DisplayResult || !DisplayJudgements.Value)
+            if (result.IsHit)
+                hitPolicy.HandleHit(judgedObject);
+
+            if (!result.IsHit || !DisplayJudgements.Value)
                 return;
 
             HitObjectArea.Explosions.Add(hitExplosionPool.Get(e => e.Apply(result)));

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

@@ -0,0 +1,105 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Skinning;
+using osu.Game.Skinning;
+
+namespace osu.Game.Rulesets.Mania.UI
+{
+    /// <summary>
+    /// A <see cref="Drawable"/> which flows its contents according to the <see cref="Column"/>s in a <see cref="Stage"/>.
+    /// Content can be added to individual columns via <see cref="SetContentForColumn"/>.
+    /// </summary>
+    /// <typeparam name="TContent">The type of content in each column.</typeparam>
+    public class ColumnFlow<TContent> : CompositeDrawable
+        where TContent : Drawable
+    {
+        /// <summary>
+        /// All contents added to this <see cref="ColumnFlow{TContent}"/>.
+        /// </summary>
+        public IReadOnlyList<TContent> Content => columns.Children.Select(c => c.Count == 0 ? null : (TContent)c.Child).ToList();
+
+        private readonly FillFlowContainer<Container> columns;
+        private readonly StageDefinition stageDefinition;
+
+        public ColumnFlow(StageDefinition stageDefinition)
+        {
+            this.stageDefinition = stageDefinition;
+
+            AutoSizeAxes = Axes.X;
+
+            InternalChild = columns = new FillFlowContainer<Container>
+            {
+                RelativeSizeAxes = Axes.Y,
+                AutoSizeAxes = Axes.X,
+                Direction = FillDirection.Horizontal,
+            };
+
+            for (int i = 0; i < stageDefinition.Columns; i++)
+                columns.Add(new Container { RelativeSizeAxes = Axes.Y });
+        }
+
+        private ISkinSource currentSkin;
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            currentSkin = skin;
+
+            skin.SourceChanged += onSkinChanged;
+            onSkinChanged();
+        }
+
+        private void onSkinChanged()
+        {
+            for (int i = 0; i < stageDefinition.Columns; i++)
+            {
+                if (i > 0)
+                {
+                    float spacing = currentSkin.GetConfig<ManiaSkinConfigurationLookup, float>(
+                                                   new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.ColumnSpacing, i - 1))
+                                               ?.Value ?? Stage.COLUMN_SPACING;
+
+                    columns[i].Margin = new MarginPadding { Left = spacing };
+                }
+
+                float? width = currentSkin.GetConfig<ManiaSkinConfigurationLookup, float>(
+                                              new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.ColumnWidth, i))
+                                          ?.Value;
+
+                if (width == null)
+                    // only used by default skin (legacy skins get defaults set in LegacyManiaSkinConfiguration)
+                    columns[i].Width = stageDefinition.IsSpecialColumn(i) ? Column.SPECIAL_COLUMN_WIDTH : Column.COLUMN_WIDTH;
+                else
+                    columns[i].Width = width.Value;
+            }
+        }
+
+        /// <summary>
+        /// Sets the content of one of the columns of this <see cref="ColumnFlow{TContent}"/>.
+        /// </summary>
+        /// <param name="column">The index of the column to set the content of.</param>
+        /// <param name="content">The content.</param>
+        public void SetContentForColumn(int column, TContent content) => columns[column].Child = content;
+
+        public new MarginPadding Padding
+        {
+            get => base.Padding;
+            set => base.Padding = value;
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (currentSkin != null)
+                currentSkin.SourceChanged -= onSkinChanged;
+        }
+    }
+}

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

@@ -0,0 +1,78 @@
+// 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 osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Mania.UI
+{
+    /// <summary>
+    /// Ensures that only the most recent <see cref="HitObject"/> is hittable, affectionately known as "note lock".
+    /// </summary>
+    public class OrderedHitPolicy
+    {
+        private readonly HitObjectContainer hitObjectContainer;
+
+        public OrderedHitPolicy(HitObjectContainer hitObjectContainer)
+        {
+            this.hitObjectContainer = hitObjectContainer;
+        }
+
+        /// <summary>
+        /// Determines whether a <see cref="DrawableHitObject"/> can be hit at a point in time.
+        /// </summary>
+        /// <remarks>
+        /// Only the most recent <see cref="DrawableHitObject"/> can be hit, a previous hitobject's window cannot extend past the next one.
+        /// </remarks>
+        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to check.</param>
+        /// <param name="time">The time to check.</param>
+        /// <returns>Whether <paramref name="hitObject"/> can be hit at the given <paramref name="time"/>.</returns>
+        public bool IsHittable(DrawableHitObject hitObject, double time)
+        {
+            var nextObject = hitObjectContainer.AliveObjects.GetNext(hitObject);
+            return nextObject == null || time < nextObject.HitObject.StartTime;
+        }
+
+        /// <summary>
+        /// Handles a <see cref="HitObject"/> being hit to potentially miss all earlier <see cref="HitObject"/>s.
+        /// </summary>
+        /// <param name="hitObject">The <see cref="HitObject"/> that was hit.</param>
+        public void HandleHit(DrawableHitObject hitObject)
+        {
+            if (!IsHittable(hitObject, hitObject.HitObject.StartTime + hitObject.Result.TimeOffset))
+                throw new InvalidOperationException($"A {hitObject} was hit before it became hittable!");
+
+            foreach (var obj in enumerateHitObjectsUpTo(hitObject.HitObject.StartTime))
+            {
+                if (obj.Judged)
+                    continue;
+
+                ((DrawableManiaHitObject)obj).MissForcefully();
+            }
+        }
+
+        private IEnumerable<DrawableHitObject> enumerateHitObjectsUpTo(double targetTime)
+        {
+            foreach (var obj in hitObjectContainer.AliveObjects)
+            {
+                if (obj.HitObject.GetEndTime() >= targetTime)
+                    yield break;
+
+                yield return obj;
+
+                foreach (var nestedObj in obj.NestedHitObjects)
+                {
+                    if (nestedObj.HitObject.GetEndTime() >= targetTime)
+                        break;
+
+                    yield return nestedObj;
+                }
+            }
+        }
+    }
+}

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

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Pooling;
@@ -11,7 +10,6 @@ using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
-using osu.Game.Rulesets.Mania.Skinning;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI;
@@ -31,14 +29,13 @@ namespace osu.Game.Rulesets.Mania.UI
 
         public const float HIT_TARGET_POSITION = 110;
 
-        public IReadOnlyList<Column> Columns => columnFlow.Children;
-        private readonly FillFlowContainer<Column> columnFlow;
+        public IReadOnlyList<Column> Columns => columnFlow.Content;
+        private readonly ColumnFlow<Column> columnFlow;
 
         private readonly JudgementContainer<DrawableManiaJudgement> judgements;
         private readonly DrawablePool<DrawableManiaJudgement> judgementPool;
 
         private readonly Drawable barLineContainer;
-        private readonly Container topLevelContainer;
 
         private readonly Dictionary<ColumnType, Color4> columnColours = new Dictionary<ColumnType, Color4>
         {
@@ -62,6 +59,8 @@ namespace osu.Game.Rulesets.Mania.UI
             RelativeSizeAxes = Axes.Y;
             AutoSizeAxes = Axes.X;
 
+            Container topLevelContainer;
+
             InternalChildren = new Drawable[]
             {
                 judgementPool = new DrawablePool<DrawableManiaJudgement>(2),
@@ -73,17 +72,13 @@ namespace osu.Game.Rulesets.Mania.UI
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
                     {
-                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground), _ => new DefaultStageBackground())
+                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground, stageDefinition: definition), _ => new DefaultStageBackground())
                         {
                             RelativeSizeAxes = Axes.Both
                         },
-                        columnFlow = new FillFlowContainer<Column>
+                        columnFlow = new ColumnFlow<Column>(definition)
                         {
-                            Name = "Columns",
                             RelativeSizeAxes = Axes.Y,
-                            AutoSizeAxes = Axes.X,
-                            Direction = FillDirection.Horizontal,
-                            Padding = new MarginPadding { Left = COLUMN_SPACING, Right = COLUMN_SPACING },
                         },
                         new Container
                         {
@@ -102,7 +97,7 @@ namespace osu.Game.Rulesets.Mania.UI
                                 RelativeSizeAxes = Axes.Y,
                             }
                         },
-                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground), _ => null)
+                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground, stageDefinition: definition), _ => null)
                         {
                             RelativeSizeAxes = Axes.Both
                         },
@@ -121,60 +116,22 @@ namespace osu.Game.Rulesets.Mania.UI
             for (int i = 0; i < definition.Columns; i++)
             {
                 var columnType = definition.GetTypeOfColumn(i);
+
                 var column = new Column(firstColumnIndex + i)
                 {
+                    RelativeSizeAxes = Axes.Both,
+                    Width = 1,
                     ColumnType = columnType,
                     AccentColour = columnColours[columnType],
                     Action = { Value = columnType == ColumnType.Special ? specialColumnStartAction++ : normalColumnStartAction++ }
                 };
 
-                AddColumn(column);
+                topLevelContainer.Add(column.TopLevelContainer.CreateProxy());
+                columnFlow.SetContentForColumn(i, column);
+                AddNested(column);
             }
         }
 
-        private ISkin currentSkin;
-
-        [BackgroundDependencyLoader]
-        private void load(ISkinSource skin)
-        {
-            currentSkin = skin;
-            skin.SourceChanged += onSkinChanged;
-
-            onSkinChanged();
-        }
-
-        private void onSkinChanged()
-        {
-            foreach (var col in columnFlow)
-            {
-                if (col.Index > 0)
-                {
-                    float spacing = currentSkin.GetConfig<ManiaSkinConfigurationLookup, float>(
-                                                   new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.ColumnSpacing, col.Index - 1))
-                                               ?.Value ?? COLUMN_SPACING;
-
-                    col.Margin = new MarginPadding { Left = spacing };
-                }
-
-                float? width = currentSkin.GetConfig<ManiaSkinConfigurationLookup, float>(
-                                              new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.ColumnWidth, col.Index))
-                                          ?.Value;
-
-                if (width == null)
-                    // only used by default skin (legacy skins get defaults set in LegacyManiaSkinConfiguration)
-                    col.Width = col.IsSpecial ? Column.SPECIAL_COLUMN_WIDTH : Column.COLUMN_WIDTH;
-                else
-                    col.Width = width.Value;
-            }
-        }
-
-        public void AddColumn(Column c)
-        {
-            topLevelContainer.Add(c.TopLevelContainer.CreateProxy());
-            columnFlow.Add(c);
-            AddNested(c);
-        }
-
         public override void Add(DrawableHitObject h)
         {
             var maniaObject = (ManiaHitObject)h.HitObject;

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

@@ -9,7 +9,7 @@ using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Osu.Tests
+namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
     public class TestSceneHitCirclePlacementBlueprint : PlacementBlueprintTestScene
     {