Merge branch 'master' of https://github.com/ppy/osu into present-recommended

osu.Android.props

@@ -52,6 +52,6 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="ppy.osu.Game.Resources" Version="2020.412.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.411.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.421.0" />
   </ItemGroup>
 </Project>

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

@@ -0,0 +1,132 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.Skinning;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneHyperDashColouring : OsuTestScene
+    {
+        [Resolved]
+        private SkinManager skins { get; set; }
+
+        [Test]
+        public void TestDefaultFruitColour()
+        {
+            var skin = new TestSkin();
+
+            checkHyperDashFruitColour(skin, Catcher.DEFAULT_HYPER_DASH_COLOUR);
+        }
+
+        [Test]
+        public void TestCustomFruitColour()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashFruitColour = Color4.Cyan
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
+        }
+
+        [Test]
+        public void TestCustomFruitColourPriority()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod,
+                HyperDashFruitColour = Color4.Cyan
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
+        }
+
+        [Test]
+        public void TestFruitColourFallback()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashColour);
+        }
+
+        private void checkHyperDashFruitColour(ISkin skin, Color4 expectedColour)
+        {
+            DrawableFruit drawableFruit = null;
+
+            AddStep("create hyper-dash fruit", () =>
+            {
+                var fruit = new Fruit { HyperDashTarget = new Banana() };
+                fruit.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                Child = setupSkinHierarchy(drawableFruit = new DrawableFruit(fruit)
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Scale = new Vector2(4f),
+                }, skin);
+            });
+
+            AddAssert("hyper-dash colour is correct", () => checkLegacyFruitHyperDashColour(drawableFruit, expectedColour));
+        }
+
+        private Drawable setupSkinHierarchy(Drawable child, ISkin skin)
+        {
+            var legacySkinProvider = new SkinProvidingContainer(skins.GetSkin(DefaultLegacySkin.Info));
+            var testSkinProvider = new SkinProvidingContainer(skin);
+            var legacySkinTransformer = new SkinProvidingContainer(new CatchLegacySkinTransformer(testSkinProvider));
+
+            return legacySkinProvider
+                .WithChild(testSkinProvider
+                    .WithChild(legacySkinTransformer
+                        .WithChild(child)));
+        }
+
+        private bool checkLegacyFruitHyperDashColour(DrawableFruit fruit, Color4 expectedColour) =>
+            fruit.ChildrenOfType<SkinnableDrawable>().First().Drawable.ChildrenOfType<Sprite>().Any(c => c.Colour == expectedColour);
+
+        private class TestSkin : LegacySkin
+        {
+            public Color4 HyperDashColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()] = value;
+            }
+
+            public Color4 HyperDashAfterImageColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()] = value;
+            }
+
+            public Color4 HyperDashFruitColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()] = value;
+            }
+
+            public TestSkin()
+                : base(new SkinInfo(), null, null, string.Empty)
+            {
+            }
+        }
+    }
+}

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

@@ -71,8 +71,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 
         protected override Skill[] CreateSkills(IBeatmap beatmap)
         {
-            using (var catcher = new Catcher(beatmap.BeatmapInfo.BaseDifficulty))
-                halfCatcherWidth = catcher.CatchWidth * 0.5f;
+            halfCatcherWidth = Catcher.CalculateCatchWidth(beatmap.BeatmapInfo.BaseDifficulty) * 0.5f;
 
             return new Skill[]
             {

osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs

@@ -9,17 +9,26 @@ using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Play;
 using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
-    public class CatchModRelax : ModRelax, IApplicableToDrawableRuleset<CatchHitObject>
+    public class CatchModRelax : ModRelax, IApplicableToDrawableRuleset<CatchHitObject>, IApplicableToPlayer
     {
         public override string Description => @"Use the mouse to control the catcher.";
 
+        private DrawableRuleset<CatchHitObject> drawableRuleset;
+
         public void ApplyToDrawableRuleset(DrawableRuleset<CatchHitObject> drawableRuleset)
         {
-            drawableRuleset.Cursor.Add(new MouseInputHelper((CatchPlayfield)drawableRuleset.Playfield));
+            this.drawableRuleset = drawableRuleset;
+        }
+
+        public void ApplyToPlayer(Player player)
+        {
+            if (!drawableRuleset.HasReplayLoaded.Value)
+                drawableRuleset.Cursor.Add(new MouseInputHelper((CatchPlayfield)drawableRuleset.Playfield));
         }
 
         private class MouseInputHelper : Drawable, IKeyBindingHandler<CatchAction>, IRequireHighFrequencyMousePosition

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

@@ -7,6 +7,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
 using osuTK.Graphics;
 
@@ -67,7 +68,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                     RelativeSizeAxes = Axes.Both,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    BorderColour = Color4.Red,
+                    BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                     BorderThickness = 12f * RADIUS_ADJUST,
                     Children = new Drawable[]
                     {
@@ -77,7 +78,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                             Alpha = 0.3f,
                             Blending = BlendingParameters.Additive,
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Red,
+                            Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                         }
                     }
                 });

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

@@ -65,6 +65,15 @@ namespace osu.Game.Rulesets.Catch.Skinning
 
         public SampleChannel GetSample(ISampleInfo sample) => source.GetSample(sample);
 
-        public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup) => source.GetConfig<TLookup, TValue>(lookup);
+        public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
+        {
+            switch (lookup)
+            {
+                case CatchSkinColour colour:
+                    return source.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+            }
+
+            return source.GetConfig<TLookup, TValue>(lookup);
+        }
     }
 }

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

@@ -0,0 +1,23 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+namespace osu.Game.Rulesets.Catch.Skinning
+{
+    public enum CatchSkinColour
+    {
+        /// <summary>
+        /// The colour to be used for the catcher while in hyper-dashing state.
+        /// </summary>
+        HyperDash,
+
+        /// <summary>
+        /// The colour to be used for fruits that grant the catcher the ability to hyper-dash.
+        /// </summary>
+        HyperDashFruit,
+
+        /// <summary>
+        /// The colour to be used for the "exploding" catcher sprite on beginning of hyper-dashing.
+        /// </summary>
+        HyperDashAfterImage,
+    }
+}

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

@@ -7,6 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Skinning;
 using osuTK;
@@ -55,14 +56,16 @@ namespace osu.Game.Rulesets.Catch.Skinning
             {
                 var hyperDash = new Sprite
                 {
-                    Texture = skin.GetTexture(lookupName),
-                    Colour = Color4.Red,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Blending = BlendingParameters.Additive,
                     Depth = 1,
                     Alpha = 0.7f,
-                    Scale = new Vector2(1.2f)
+                    Scale = new Vector2(1.2f),
+                    Texture = skin.GetTexture(lookupName),
+                    Colour = skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit)?.Value ??
+                             skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ??
+                             Catcher.DEFAULT_HYPER_DASH_COLOUR,
                 };
 
                 AddInternal(hyperDash);

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

@@ -21,6 +21,8 @@ namespace osu.Game.Rulesets.Catch.UI
 {
     public class Catcher : Container, IKeyBindingHandler<CatchAction>
     {
+        public static readonly Color4 DEFAULT_HYPER_DASH_COLOUR = Color4.Red;
+
         /// <summary>
         /// Whether we are hyper-dashing or not.
         /// </summary>
@@ -42,11 +44,6 @@ namespace osu.Game.Rulesets.Catch.UI
         /// </summary>
         private const float allowed_catch_range = 0.8f;
 
-        /// <summary>
-        /// Width of the area that can be used to attempt catches during gameplay.
-        /// </summary>
-        internal float CatchWidth => CatcherArea.CATCHER_SIZE * Math.Abs(Scale.X) * allowed_catch_range;
-
         protected bool Dashing
         {
             get => dashing;
@@ -77,6 +74,11 @@ namespace osu.Game.Rulesets.Catch.UI
             }
         }
 
+        /// <summary>
+        /// Width of the area that can be used to attempt catches during gameplay.
+        /// </summary>
+        private readonly float catchWidth;
+
         private Container<DrawableHitObject> caughtFruit;
 
         private CatcherSprite catcherIdle;
@@ -104,7 +106,9 @@ namespace osu.Game.Rulesets.Catch.UI
 
             Size = new Vector2(CatcherArea.CATCHER_SIZE);
             if (difficulty != null)
-                Scale = new Vector2(1.0f - 0.7f * (difficulty.CircleSize - 5) / 5);
+                Scale = calculateScale(difficulty);
+
+            catchWidth = CalculateCatchWidth(Scale);
         }
 
         [BackgroundDependencyLoader]
@@ -137,6 +141,26 @@ namespace osu.Game.Rulesets.Catch.UI
             updateCatcher();
         }
 
+        /// <summary>
+        /// Calculates the scale of the catcher based off the provided beatmap difficulty.
+        /// </summary>
+        private static Vector2 calculateScale(BeatmapDifficulty difficulty)
+            => new Vector2(1.0f - 0.7f * (difficulty.CircleSize - 5) / 5);
+
+        /// <summary>
+        /// Calculates the width of the area used for attempting catches in gameplay.
+        /// </summary>
+        /// <param name="scale">The scale of the catcher.</param>
+        internal static float CalculateCatchWidth(Vector2 scale)
+            => CatcherArea.CATCHER_SIZE * Math.Abs(scale.X) * allowed_catch_range;
+
+        /// <summary>
+        /// Calculates the width of the area used for attempting catches in gameplay.
+        /// </summary>
+        /// <param name="difficulty">The beatmap difficulty.</param>
+        internal static float CalculateCatchWidth(BeatmapDifficulty difficulty)
+            => CalculateCatchWidth(calculateScale(difficulty));
+
         /// <summary>
         /// Add a caught fruit to the catcher's stack.
         /// </summary>
@@ -175,7 +199,7 @@ namespace osu.Game.Rulesets.Catch.UI
         /// <returns>Whether the catch is possible.</returns>
         public bool AttemptCatch(CatchHitObject fruit)
         {
-            var halfCatchWidth = CatchWidth * 0.5f;
+            var halfCatchWidth = catchWidth * 0.5f;
 
             // this stuff wil disappear once we move fruit to non-relative coordinate space in the future.
             var catchObjectPosition = fruit.X * CatchPlayfield.BASE_WIDTH;

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

@@ -0,0 +1,51 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Replays;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class ManiaLegacyReplayTest
+    {
+        [TestCase(ManiaAction.Key1)]
+        [TestCase(ManiaAction.Key1, ManiaAction.Key2)]
+        [TestCase(ManiaAction.Special1)]
+        [TestCase(ManiaAction.Key8)]
+        public void TestEncodeDecodeSingleStage(params ManiaAction[] actions)
+        {
+            var beatmap = new ManiaBeatmap(new StageDefinition { Columns = 9 });
+
+            var frame = new ManiaReplayFrame(0, actions);
+            var legacyFrame = frame.ToLegacy(beatmap);
+
+            var decodedFrame = new ManiaReplayFrame();
+            decodedFrame.FromLegacy(legacyFrame, beatmap);
+
+            Assert.That(decodedFrame.Actions, Is.EquivalentTo(frame.Actions));
+        }
+
+        [TestCase(ManiaAction.Key1)]
+        [TestCase(ManiaAction.Key1, ManiaAction.Key2)]
+        [TestCase(ManiaAction.Special1)]
+        [TestCase(ManiaAction.Special2)]
+        [TestCase(ManiaAction.Special1, ManiaAction.Special2)]
+        [TestCase(ManiaAction.Special1, ManiaAction.Key5)]
+        [TestCase(ManiaAction.Key8)]
+        public void TestEncodeDecodeDualStage(params ManiaAction[] actions)
+        {
+            var beatmap = new ManiaBeatmap(new StageDefinition { Columns = 5 });
+            beatmap.Stages.Add(new StageDefinition { Columns = 5 });
+
+            var frame = new ManiaReplayFrame(0, actions);
+            var legacyFrame = frame.ToLegacy(beatmap);
+
+            var decodedFrame = new ManiaReplayFrame();
+            decodedFrame.FromLegacy(legacyFrame, beatmap);
+
+            Assert.That(decodedFrame.Actions, Is.EquivalentTo(frame.Actions));
+        }
+    }
+}

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

@@ -41,8 +41,6 @@ namespace osu.Game.Rulesets.Mania.Tests
                 AccentColour = Color4.OrangeRed,
                 Clock = new FramedClock(new StopwatchClock()), // No scroll
             });
-
-            AddStep("change direction", () => ((ScrollingTestContainer)HitObjectContainer).Flip());
         }
 
         protected override Container CreateHitObjectContainer() => new ScrollingTestContainer(ScrollingDirection.Down) { RelativeSizeAxes = Axes.Both };

osu.Game.Rulesets.Mania.Tests/Resources/special-skin/skin.ini

@@ -0,0 +1,6 @@
+[General]
+Version: 2.4
+
+[Mania]
+Keys: 4
+ColumnLineWidth: 3,1,3,1,1

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

@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                     {
                         RelativeSizeAxes = Axes.Both,
                         Width = 0.5f,
-                        Child = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.ColumnBackground, 0), _ => new DefaultColumnBackground())
+                        Child = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.ColumnBackground, 1), _ => new DefaultColumnBackground())
                         {
                             RelativeSizeAxes = Axes.Both
                         }

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

@@ -27,7 +27,6 @@ namespace osu.Game.Rulesets.Mania.Tests
         private const double time_after_tail = 5250;
 
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         /// <summary>
         ///     -----[           ]-----
@@ -283,20 +282,15 @@ namespace osu.Game.Rulesets.Mania.Tests
                     {
                         if (currentPlayer == p) judgementResults.Add(result);
                     };
-                    p.ScoreProcessor.AllJudged += () =>
-                    {
-                        if (currentPlayer == p) allJudgedFired = true;
-                    };
                 };
 
                 LoadScreen(currentPlayer = p);
-                allJudgedFired = false;
                 judgementResults = new List<JudgementResult>();
             });
 
             AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
             AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
-            AddUntilStep("Wait for all judged", () => allJudgedFired);
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
         }
 
         private class ScoreAccessibleReplayPlayer : ReplayPlayer

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

@@ -1,17 +1,59 @@
 // 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.Extensions.IEnumerableExtensions;
+using osu.Framework.Testing;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
     public class TestSceneNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            this.ChildrenOfType<HitObjectContainer>().ForEach(c => c.Clear());
+
+            ResetPlacement();
+
+            ((ScrollingTestContainer)HitObjectContainer).Direction = ScrollingDirection.Down;
+        });
+
+        [Test]
+        public void TestPlaceBeforeCurrentTimeDownwards()
+        {
+            AddStep("move mouse before current time", () => InputManager.MoveMouseTo(this.ChildrenOfType<Column>().Single().ScreenSpaceDrawQuad.BottomLeft - new Vector2(0, 10)));
+
+            AddStep("click", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("note start time < 0", () => getNote().StartTime < 0);
+        }
+
+        [Test]
+        public void TestPlaceAfterCurrentTimeDownwards()
+        {
+            AddStep("move mouse after current time", () => InputManager.MoveMouseTo(this.ChildrenOfType<Column>().Single()));
+
+            AddStep("click", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("note start time > 0", () => getNote().StartTime > 0);
+        }
+
+        private Note getNote() => this.ChildrenOfType<DrawableNote>().FirstOrDefault()?.HitObject;
+
         protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableNote((Note)hitObject);
         protected override PlacementBlueprint CreateBlueprint() => new NotePlacementBlueprint();
     }

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

@@ -13,7 +13,6 @@ using osu.Game.Rulesets.Mania.Beatmaps.Patterns;
 using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy;
 using osuTK;
-using osu.Game.Audio;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
@@ -47,7 +46,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             {
                 TargetColumns = (int)Math.Max(1, roundedCircleSize);
 
-                if (TargetColumns >= 10)
+                if (TargetColumns > ManiaRuleset.MAX_STAGE_KEYS)
                 {
                     TargetColumns /= 2;
                     Dual = true;
@@ -67,7 +66,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             }
         }
 
-        public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition || h is ManiaHitObject);
+        public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
         protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original)
         {
@@ -239,8 +238,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                         StartTime = HitObject.StartTime,
                         Duration = endTimeData.Duration,
                         Column = column,
-                        Head = { Samples = sampleInfoListAt(HitObject.StartTime) },
-                        Tail = { Samples = sampleInfoListAt(endTimeData.EndTime) },
+                        Samples = HitObject.Samples,
+                        NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                     });
                 }
                 else if (HitObject is IHasXPosition)
@@ -255,22 +254,6 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 return pattern;
             }
-
-            /// <summary>
-            /// Retrieves the sample info list at a point in time.
-            /// </summary>
-            /// <param name="time">The time to retrieve the sample info list from.</param>
-            /// <returns></returns>
-            private IList<HitSampleInfo> sampleInfoListAt(double time)
-            {
-                if (!(HitObject is IHasCurve curveData))
-                    return HitObject.Samples;
-
-                double segmentTime = (curveData.EndTime - HitObject.StartTime) / curveData.SpanCount();
-
-                int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
-                return curveData.NodeSamples[index];
-            }
         }
     }
 }

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

@@ -505,16 +505,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             }
             else
             {
-                var holdNote = new HoldNote
+                newObject = new HoldNote
                 {
                     StartTime = startTime,
-                    Column = column,
                     Duration = endTime - startTime,
-                    Head = { Samples = sampleInfoListAt(startTime) },
-                    Tail = { Samples = sampleInfoListAt(endTime) }
+                    Column = column,
+                    Samples = HitObject.Samples,
+                    NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                 };
-
-                newObject = holdNote;
             }
 
             pattern.Add(newObject);

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

@@ -64,21 +64,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             if (holdNote)
             {
-                var hold = new HoldNote
+                newObject = new HoldNote
                 {
                     StartTime = HitObject.StartTime,
+                    Duration = endTime - HitObject.StartTime,
                     Column = column,
-                    Duration = endTime - HitObject.StartTime
+                    Samples = HitObject.Samples,
+                    NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                 };
-
-                if (hold.Head.Samples == null)
-                    hold.Head.Samples = new List<HitSampleInfo>();
-
-                hold.Head.Samples.Add(new HitSampleInfo { Name = HitSampleInfo.HIT_NORMAL });
-
-                hold.Tail.Samples = HitObject.Samples;
-
-                newObject = hold;
             }
             else
             {

osu.Game.Rulesets.Mania/DualStageVariantGenerator.cs

@@ -0,0 +1,64 @@
+// 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.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class DualStageVariantGenerator
+    {
+        private readonly int singleStageVariant;
+        private readonly InputKey[] stage1LeftKeys;
+        private readonly InputKey[] stage1RightKeys;
+        private readonly InputKey[] stage2LeftKeys;
+        private readonly InputKey[] stage2RightKeys;
+
+        public DualStageVariantGenerator(int singleStageVariant)
+        {
+            this.singleStageVariant = singleStageVariant;
+
+            // 10K is special because it expands towards the centre of the keyboard (VM/BN), rather than towards the edges of the keyboard.
+            if (singleStageVariant == 10)
+            {
+                stage1LeftKeys = new[] { InputKey.Q, InputKey.W, InputKey.E, InputKey.R, InputKey.V };
+                stage1RightKeys = new[] { InputKey.M, InputKey.I, InputKey.O, InputKey.P, InputKey.BracketLeft };
+
+                stage2LeftKeys = new[] { InputKey.S, InputKey.D, InputKey.F, InputKey.G, InputKey.B };
+                stage2RightKeys = new[] { InputKey.N, InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+            else
+            {
+                stage1LeftKeys = new[] { InputKey.Q, InputKey.W, InputKey.E, InputKey.R };
+                stage1RightKeys = new[] { InputKey.I, InputKey.O, InputKey.P, InputKey.BracketLeft };
+
+                stage2LeftKeys = new[] { InputKey.S, InputKey.D, InputKey.F, InputKey.G };
+                stage2RightKeys = new[] { InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+        }
+
+        public IEnumerable<KeyBinding> GenerateMappings()
+        {
+            var stage1Bindings = new VariantMappingGenerator
+            {
+                LeftKeys = stage1LeftKeys,
+                RightKeys = stage1RightKeys,
+                SpecialKey = InputKey.V,
+                SpecialAction = ManiaAction.Special1,
+                NormalActionStart = ManiaAction.Key1
+            }.GenerateKeyBindingsFor(singleStageVariant, out var nextNormal);
+
+            var stage2Bindings = new VariantMappingGenerator
+            {
+                LeftKeys = stage2LeftKeys,
+                RightKeys = stage2RightKeys,
+                SpecialKey = InputKey.B,
+                SpecialAction = ManiaAction.Special2,
+                NormalActionStart = nextNormal
+            }.GenerateKeyBindingsFor(singleStageVariant, out _);
+
+            return stage1Bindings.Concat(stage2Bindings);
+        }
+    }
+}

osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs

@@ -3,6 +3,7 @@
 
 using System;
 using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
 using osuTK;
@@ -46,6 +47,12 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             bodyPiece.Height = (bottomPosition - topPosition).Y;
         }
 
+        protected override void OnMouseUp(MouseUpEvent e)
+        {
+            base.OnMouseUp(e);
+            EndPlacement(true);
+        }
+
         private double originalStartTime;
 
         public override void UpdatePosition(Vector2 screenSpacePosition)

osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs

@@ -50,16 +50,10 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
                 return base.OnMouseDown(e);
 
             HitObject.Column = Column.Index;
-            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition));
+            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition), true);
             return true;
         }
 
-        protected override void OnMouseUp(MouseUpEvent e)
-        {
-            EndPlacement(true);
-            base.OnMouseUp(e);
-        }
-
         public override void UpdatePosition(Vector2 screenSpacePosition)
         {
             if (!PlacementActive)

osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
 
@@ -26,5 +27,15 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             Width = SnappedWidth;
             Position = SnappedMousePosition;
         }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            base.OnMouseDown(e);
+
+            // Place the note immediately.
+            EndPlacement(true);
+
+            return true;
+        }
     }
 }

osu.Game.Rulesets.Mania/ManiaInputManager.cs

@@ -78,5 +78,11 @@ namespace osu.Game.Rulesets.Mania
 
         [Description("Key 18")]
         Key18,
+
+        [Description("Key 19")]
+        Key19,
+
+        [Description("Key 20")]
+        Key20,
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -35,6 +35,11 @@ namespace osu.Game.Rulesets.Mania
 {
     public class ManiaRuleset : Ruleset, ILegacyRuleset
     {
+        /// <summary>
+        /// The maximum number of supported keys in a single stage.
+        /// </summary>
+        public const int MAX_STAGE_KEYS = 10;
+
         public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null) => new DrawableManiaRuleset(this, beatmap, mods);
 
         public override ScoreProcessor CreateScoreProcessor() => new ManiaScoreProcessor();
@@ -202,6 +207,7 @@ namespace osu.Game.Rulesets.Mania
                             new ManiaModKey7(),
                             new ManiaModKey8(),
                             new ManiaModKey9(),
+                            new ManiaModKey10(),
                             new ManiaModKey1(),
                             new ManiaModKey2(),
                             new ManiaModKey3()),
@@ -250,9 +256,9 @@ namespace osu.Game.Rulesets.Mania
         {
             get
             {
-                for (int i = 1; i <= 9; i++)
+                for (int i = 1; i <= MAX_STAGE_KEYS; i++)
                     yield return (int)PlayfieldType.Single + i;
-                for (int i = 2; i <= 18; i += 2)
+                for (int i = 2; i <= MAX_STAGE_KEYS * 2; i += 2)
                     yield return (int)PlayfieldType.Dual + i;
             }
         }
@@ -262,73 +268,10 @@ namespace osu.Game.Rulesets.Mania
             switch (getPlayfieldType(variant))
             {
                 case PlayfieldType.Single:
-                    return new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.A,
-                            InputKey.S,
-                            InputKey.D,
-                            InputKey.F
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.J,
-                            InputKey.K,
-                            InputKey.L,
-                            InputKey.Semicolon
-                        },
-                        SpecialKey = InputKey.Space,
-                        SpecialAction = ManiaAction.Special1,
-                        NormalActionStart = ManiaAction.Key1,
-                    }.GenerateKeyBindingsFor(variant, out _);
+                    return new SingleStageVariantGenerator(variant).GenerateMappings();
 
                 case PlayfieldType.Dual:
-                    int keys = getDualStageKeyCount(variant);
-
-                    var stage1Bindings = new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.Q,
-                            InputKey.W,
-                            InputKey.E,
-                            InputKey.R,
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.X,
-                            InputKey.C,
-                            InputKey.V,
-                            InputKey.B
-                        },
-                        SpecialKey = InputKey.S,
-                        SpecialAction = ManiaAction.Special1,
-                        NormalActionStart = ManiaAction.Key1
-                    }.GenerateKeyBindingsFor(keys, out var nextNormal);
-
-                    var stage2Bindings = new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.Number7,
-                            InputKey.Number8,
-                            InputKey.Number9,
-                            InputKey.Number0
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.K,
-                            InputKey.L,
-                            InputKey.Semicolon,
-                            InputKey.Quote
-                        },
-                        SpecialKey = InputKey.I,
-                        SpecialAction = ManiaAction.Special2,
-                        NormalActionStart = nextNormal
-                    }.GenerateKeyBindingsFor(keys, out _);
-
-                    return stage1Bindings.Concat(stage2Bindings);
+                    return new DualStageVariantGenerator(getDualStageKeyCount(variant)).GenerateMappings();
             }
 
             return Array.Empty<KeyBinding>();
@@ -364,59 +307,6 @@ namespace osu.Game.Rulesets.Mania
         {
             return (PlayfieldType)Enum.GetValues(typeof(PlayfieldType)).Cast<int>().OrderByDescending(i => i).First(v => variant >= v);
         }
-
-        private class VariantMappingGenerator
-        {
-            /// <summary>
-            /// All the <see cref="InputKey"/>s available to the left hand.
-            /// </summary>
-            public InputKey[] LeftKeys;
-
-            /// <summary>
-            /// All the <see cref="InputKey"/>s available to the right hand.
-            /// </summary>
-            public InputKey[] RightKeys;
-
-            /// <summary>
-            /// The <see cref="InputKey"/> for the special key.
-            /// </summary>
-            public InputKey SpecialKey;
-
-            /// <summary>
-            /// The <see cref="ManiaAction"/> at which the normal columns should begin.
-            /// </summary>
-            public ManiaAction NormalActionStart;
-
-            /// <summary>
-            /// The <see cref="ManiaAction"/> for the special column.
-            /// </summary>
-            public ManiaAction SpecialAction;
-
-            /// <summary>
-            /// Generates a list of <see cref="KeyBinding"/>s for a specific number of columns.
-            /// </summary>
-            /// <param name="columns">The number of columns that need to be bound.</param>
-            /// <param name="nextNormalAction">The next <see cref="ManiaAction"/> to use for normal columns.</param>
-            /// <returns>The keybindings.</returns>
-            public IEnumerable<KeyBinding> GenerateKeyBindingsFor(int columns, out ManiaAction nextNormalAction)
-            {
-                ManiaAction currentNormalAction = NormalActionStart;
-
-                var bindings = new List<KeyBinding>();
-
-                for (int i = LeftKeys.Length - columns / 2; i < LeftKeys.Length; i++)
-                    bindings.Add(new KeyBinding(LeftKeys[i], currentNormalAction++));
-
-                if (columns % 2 == 1)
-                    bindings.Add(new KeyBinding(SpecialKey, SpecialAction));
-
-                for (int i = 0; i < columns / 2; i++)
-                    bindings.Add(new KeyBinding(RightKeys[i], currentNormalAction++));
-
-                nextNormalAction = currentNormalAction;
-                return bindings;
-            }
-        }
     }
 
     public enum PlayfieldType

osu.Game.Rulesets.Mania/Mods/ManiaModKey10.cs

@@ -0,0 +1,13 @@
+// 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.
+
+namespace osu.Game.Rulesets.Mania.Mods
+{
+    public class ManiaModKey10 : ManiaKeyMod
+    {
+        public override int KeyCount => 10;
+        public override string Name => "Ten Keys";
+        public override string Acronym => "10K";
+        public override string Description => @"Play with ten keys.";
+    }
+}

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

@@ -51,7 +51,10 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
             AddRangeInternal(new[]
             {
-                bodyPiece = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.HoldNoteBody, hitObject.Column), _ => new DefaultBodyPiece())
+                bodyPiece = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.HoldNoteBody, hitObject.Column), _ => new DefaultBodyPiece
+                {
+                    RelativeSizeAxes = Axes.Both
+                })
                 {
                     RelativeSizeAxes = Axes.X
                 },
@@ -127,6 +130,11 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             bodyPiece.Anchor = bodyPiece.Origin = e.NewValue == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
         }
 
+        public override void PlaySamples()
+        {
+            // Samples are played by the head/tail notes.
+        }
+
         protected override void Update()
         {
             base.Update();

osu.Game.Rulesets.Mania/Objects/Drawables/Pieces/DefaultBodyPiece.cs

@@ -34,7 +34,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
 
         public DefaultBodyPiece()
         {
-            RelativeSizeAxes = Axes.Both;
             Blending = BlendingParameters.Additive;
 
             AddLayout(subtractionCache);

osu.Game.Rulesets.Mania/Objects/HoldNote.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.Collections.Generic;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Judgements;
@@ -28,7 +30,9 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 duration = value;
-                Tail.StartTime = EndTime;
+
+                if (Tail != null)
+                    Tail.StartTime = EndTime;
             }
         }
 
@@ -38,8 +42,12 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 base.StartTime = value;
-                Head.StartTime = value;
-                Tail.StartTime = EndTime;
+
+                if (Head != null)
+                    Head.StartTime = value;
+
+                if (Tail != null)
+                    Tail.StartTime = EndTime;
             }
         }
 
@@ -49,20 +57,26 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 base.Column = value;
-                Head.Column = value;
-                Tail.Column = value;
+
+                if (Head != null)
+                    Head.Column = value;
+
+                if (Tail != null)
+                    Tail.Column = value;
             }
         }
 
+        public List<IList<HitSampleInfo>> NodeSamples { get; set; }
+
         /// <summary>
         /// The head note of the hold.
         /// </summary>
-        public readonly Note Head = new Note();
+        public Note Head { get; private set; }
 
         /// <summary>
         /// The tail note of the hold.
         /// </summary>
-        public readonly TailNote Tail = new TailNote();
+        public TailNote Tail { get; private set; }
 
         /// <summary>
         /// The time between ticks of this hold.
@@ -83,8 +97,19 @@ namespace osu.Game.Rulesets.Mania.Objects
 
             createTicks();
 
-            AddNested(Head);
-            AddNested(Tail);
+            AddNested(Head = new Note
+            {
+                StartTime = StartTime,
+                Column = Column,
+                Samples = getNodeSamples(0),
+            });
+
+            AddNested(Tail = new TailNote
+            {
+                StartTime = EndTime,
+                Column = Column,
+                Samples = getNodeSamples((NodeSamples?.Count - 1) ?? 1),
+            });
         }
 
         private void createTicks()
@@ -105,5 +130,8 @@ namespace osu.Game.Rulesets.Mania.Objects
         public override Judgement CreateJudgement() => new IgnoreJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
+
+        private IList<HitSampleInfo> getNodeSamples(int nodeIndex) =>
+            nodeIndex < NodeSamples?.Count ? NodeSamples[nodeIndex] : Samples;
     }
 }

osu.Game.Rulesets.Mania/Objects/ManiaHitObject.cs

@@ -5,11 +5,12 @@ using osu.Framework.Bindables;
 using osu.Game.Rulesets.Mania.Objects.Types;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Objects
 {
-    public abstract class ManiaHitObject : HitObject, IHasColumn
+    public abstract class ManiaHitObject : HitObject, IHasColumn, IHasXPosition
     {
         public readonly Bindable<int> ColumnBindable = new Bindable<int>();
 
@@ -20,5 +21,11 @@ namespace osu.Game.Rulesets.Mania.Objects
         }
 
         protected override HitWindows CreateHitWindows() => new ManiaHitWindows();
+
+        #region LegacyBeatmapEncoder
+
+        float IHasXPosition.X => Column;
+
+        #endregion
     }
 }

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

@@ -1,8 +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 System.Collections.Generic;
-using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Replays.Legacy;
 using osu.Game.Rulesets.Mania.Beatmaps;
@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Mania.Replays
 
             while (activeColumns > 0)
             {
-                var isSpecial = maniaBeatmap.Stages.First().IsSpecialColumn(counter);
+                bool isSpecial = isColumnAtIndexSpecial(maniaBeatmap, counter);
 
                 if ((activeColumns & 1) > 0)
                     Actions.Add(isSpecial ? specialAction : normalAction);
@@ -58,33 +58,87 @@ namespace osu.Game.Rulesets.Mania.Replays
 
             int keys = 0;
 
-            var specialColumns = new List<int>();
-
-            for (int i = 0; i < maniaBeatmap.TotalColumns; i++)
-            {
-                if (maniaBeatmap.Stages.First().IsSpecialColumn(i))
-                    specialColumns.Add(i);
-            }
-
             foreach (var action in Actions)
             {
                 switch (action)
                 {
                     case ManiaAction.Special1:
-                        keys |= 1 << specialColumns[0];
+                        keys |= 1 << getSpecialColumnIndex(maniaBeatmap, 0);
                         break;
 
                     case ManiaAction.Special2:
-                        keys |= 1 << specialColumns[1];
+                        keys |= 1 << getSpecialColumnIndex(maniaBeatmap, 1);
                         break;
 
                     default:
-                        keys |= 1 << (action - ManiaAction.Key1);
+                        // the index in lazer, which doesn't include special keys.
+                        int nonSpecialKeyIndex = action - ManiaAction.Key1;
+
+                        // the index inclusive of special keys.
+                        int overallIndex = 0;
+
+                        // iterate to find the index including special keys.
+                        for (; overallIndex < maniaBeatmap.TotalColumns; overallIndex++)
+                        {
+                            // skip over special columns.
+                            if (isColumnAtIndexSpecial(maniaBeatmap, overallIndex))
+                                continue;
+                            // found a non-special column to use.
+                            if (nonSpecialKeyIndex == 0)
+                                break;
+                            // found a non-special column but not ours.
+                            nonSpecialKeyIndex--;
+                        }
+
+                        keys |= 1 << overallIndex;
                         break;
                 }
             }
 
             return new LegacyReplayFrame(Time, keys, null, ReplayButtonState.None);
         }
+
+        /// <summary>
+        /// Find the overall index (across all stages) for a specified special key.
+        /// </summary>
+        /// <param name="maniaBeatmap">The beatmap.</param>
+        /// <param name="specialOffset">The special key offset (0 is S1).</param>
+        /// <returns>The overall index for the special column.</returns>
+        private int getSpecialColumnIndex(ManiaBeatmap maniaBeatmap, int specialOffset)
+        {
+            for (int i = 0; i < maniaBeatmap.TotalColumns; i++)
+            {
+                if (isColumnAtIndexSpecial(maniaBeatmap, i))
+                {
+                    if (specialOffset == 0)
+                        return i;
+
+                    specialOffset--;
+                }
+            }
+
+            throw new ArgumentException("Special key index is too high.", nameof(specialOffset));
+        }
+
+        /// <summary>
+        /// Check whether the column at an overall index (across all stages) is a special column.
+        /// </summary>
+        /// <param name="beatmap">The beatmap.</param>
+        /// <param name="index">The overall index to check.</param>
+        private bool isColumnAtIndexSpecial(ManiaBeatmap beatmap, int index)
+        {
+            foreach (var stage in beatmap.Stages)
+            {
+                if (index >= stage.Columns)
+                {
+                    index -= stage.Columns;
+                    continue;
+                }
+
+                return stage.IsSpecialColumn(index);
+            }
+
+            throw new ArgumentException("Column index is too high.", nameof(index));
+        }
     }
 }

osu.Game.Rulesets.Mania/SingleStageVariantGenerator.cs

@@ -0,0 +1,41 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using osu.Framework.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class SingleStageVariantGenerator
+    {
+        private readonly int variant;
+        private readonly InputKey[] leftKeys;
+        private readonly InputKey[] rightKeys;
+
+        public SingleStageVariantGenerator(int variant)
+        {
+            this.variant = variant;
+
+            // 10K is special because it expands towards the centre of the keyboard (V/N), rather than towards the edges of the keyboard.
+            if (variant == 10)
+            {
+                leftKeys = new[] { InputKey.A, InputKey.S, InputKey.D, InputKey.F, InputKey.V };
+                rightKeys = new[] { InputKey.N, InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+            else
+            {
+                leftKeys = new[] { InputKey.A, InputKey.S, InputKey.D, InputKey.F };
+                rightKeys = new[] { InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+        }
+
+        public IEnumerable<KeyBinding> GenerateMappings() => new VariantMappingGenerator
+        {
+            LeftKeys = leftKeys,
+            RightKeys = rightKeys,
+            SpecialKey = InputKey.Space,
+            SpecialAction = ManiaAction.Special1,
+            NormalActionStart = ManiaAction.Key1,
+        }.GenerateKeyBindingsFor(variant, out _);
+    }
+}

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

@@ -67,6 +67,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                 {
                     RelativeSizeAxes = Axes.Y,
                     Width = leftLineWidth,
+                    Scale = new Vector2(0.740f, 1),
                     Colour = lineColour,
                     Alpha = hasLeftLine ? 1 : 0
                 },
@@ -76,6 +77,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     Origin = Anchor.TopRight,
                     RelativeSizeAxes = Axes.Y,
                     Width = rightLineWidth,
+                    Scale = new Vector2(0.740f, 1),
                     Colour = lineColour,
                     Alpha = hasRightLine ? 1 : 0
                 },

osu.Game.Rulesets.Mania/VariantMappingGenerator.cs

@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using osu.Framework.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class VariantMappingGenerator
+    {
+        /// <summary>
+        /// All the <see cref="InputKey"/>s available to the left hand.
+        /// </summary>
+        public InputKey[] LeftKeys;
+
+        /// <summary>
+        /// All the <see cref="InputKey"/>s available to the right hand.
+        /// </summary>
+        public InputKey[] RightKeys;
+
+        /// <summary>
+        /// The <see cref="InputKey"/> for the special key.
+        /// </summary>
+        public InputKey SpecialKey;
+
+        /// <summary>
+        /// The <see cref="ManiaAction"/> at which the normal columns should begin.
+        /// </summary>
+        public ManiaAction NormalActionStart;
+
+        /// <summary>
+        /// The <see cref="ManiaAction"/> for the special column.
+        /// </summary>
+        public ManiaAction SpecialAction;
+
+        /// <summary>
+        /// Generates a list of <see cref="KeyBinding"/>s for a specific number of columns.
+        /// </summary>
+        /// <param name="columns">The number of columns that need to be bound.</param>
+        /// <param name="nextNormalAction">The next <see cref="ManiaAction"/> to use for normal columns.</param>
+        /// <returns>The keybindings.</returns>
+        public IEnumerable<KeyBinding> GenerateKeyBindingsFor(int columns, out ManiaAction nextNormalAction)
+        {
+            ManiaAction currentNormalAction = NormalActionStart;
+
+            var bindings = new List<KeyBinding>();
+
+            for (int i = LeftKeys.Length - columns / 2; i < LeftKeys.Length; i++)
+                bindings.Add(new KeyBinding(LeftKeys[i], currentNormalAction++));
+
+            if (columns % 2 == 1)
+                bindings.Add(new KeyBinding(SpecialKey, SpecialAction));
+
+            for (int i = 0; i < columns / 2; i++)
+                bindings.Add(new KeyBinding(RightKeys[i], currentNormalAction++));
+
+            nextNormalAction = currentNormalAction;
+            return bindings;
+        }
+    }
+}

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

@@ -0,0 +1,106 @@
+// 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 NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests.Mods
+{
+    public class TestSceneOsuModHidden : ModTestScene
+    {
+        public TestSceneOsuModHidden()
+            : base(new OsuRuleset())
+        {
+        }
+
+        [Test]
+        public void TestDefaultBeatmapTest() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            PassCondition = checkSomeHit
+        });
+
+        [Test]
+        public void FirstCircleAfterTwoSpinners() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        EndTime = 1000,
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        StartTime = 1200,
+                        EndTime = 2200,
+                    },
+                    new HitCircle
+                    {
+                        Position = new Vector2(300, 192),
+                        StartTime = 3200,
+                    },
+                    new HitCircle
+                    {
+                        Position = new Vector2(384, 192),
+                        StartTime = 4200,
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
+        [Test]
+        public void FirstSliderAfterTwoSpinners() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        EndTime = 1000,
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        StartTime = 1200,
+                        EndTime = 2200,
+                    },
+                    new Slider
+                    {
+                        StartTime = 3200,
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(100, 0), })
+                    },
+                    new Slider
+                    {
+                        StartTime = 5200,
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(100, 0), })
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
+        private bool checkSomeHit()
+        {
+            return Player.ScoreProcessor.JudgedHits >= 4;
+        }
+    }
+}

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

@@ -296,6 +296,44 @@ namespace osu.Game.Rulesets.Osu.Tests
             addJudgementAssert(hitObjects[1], HitResult.Great);
         }
 
+        [Test]
+        public void TestHitSliderHeadBeforeHitCircle()
+        {
+            const double time_circle = 1000;
+            const double time_slider = 1200;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_circle - 100, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_circle, Position = positionCircle, Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_slider, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+        }
+
         private void addJudgementAssert(OsuHitObject hitObject, HitResult result)
         {
             AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judgement is {result}",
@@ -316,7 +354,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         private ScoreAccessibleReplayPlayer currentPlayer;
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         private void performTest(List<OsuHitObject> hitObjects, List<ReplayFrame> frames)
         {
@@ -342,20 +379,15 @@ namespace osu.Game.Rulesets.Osu.Tests
                     {
                         if (currentPlayer == p) judgementResults.Add(result);
                     };
-                    p.ScoreProcessor.AllJudged += () =>
-                    {
-                        if (currentPlayer == p) allJudgedFired = true;
-                    };
                 };
 
                 LoadScreen(currentPlayer = p);
-                allJudgedFired = false;
                 judgementResults = new List<JudgementResult>();
             });
 
             AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
             AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
-            AddUntilStep("Wait for all judged", () => allJudgedFired);
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
         }
 
         private class TestHitCircle : HitCircle
@@ -371,6 +403,9 @@ namespace osu.Game.Rulesets.Osu.Tests
                 {
                     HeadCircle.HitWindows = new TestHitWindows();
                     TailCircle.HitWindows = new TestHitWindows();
+
+                    HeadCircle.HitWindows.SetDifficulty(0);
+                    TailCircle.HitWindows.SetDifficulty(0);
                 };
             }
         }

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

@@ -47,7 +47,6 @@ namespace osu.Game.Rulesets.Osu.Tests
         private const double time_slider_end = 4000;
 
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         /// <summary>
         /// Scenario:
@@ -375,20 +374,15 @@ namespace osu.Game.Rulesets.Osu.Tests
                     {
                         if (currentPlayer == p) judgementResults.Add(result);
                     };
-                    p.ScoreProcessor.AllJudged += () =>
-                    {
-                        if (currentPlayer == p) allJudgedFired = true;
-                    };
                 };
 
                 LoadScreen(currentPlayer = p);
-                allJudgedFired = false;
                 judgementResults = new List<JudgementResult>();
             });
 
             AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
             AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
-            AddUntilStep("Wait for all judged", () => allJudgedFired);
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
         }
 
         private class ScoreAccessibleReplayPlayer : ReplayPlayer

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

@@ -259,6 +259,23 @@ namespace osu.Game.Rulesets.Osu.Tests
             assertControlPointType(2, PathType.PerfectCurve);
         }
 
+        [Test]
+        public void TestBeginPlacementWithoutReleasingMouse()
+        {
+            addMovementStep(new Vector2(200));
+            AddStep("press left button", () => InputManager.PressButton(MouseButton.Left));
+
+            addMovementStep(new Vector2(400, 200));
+            AddStep("release left button", () => InputManager.ReleaseButton(MouseButton.Left));
+
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertLength(200);
+            assertControlPointCount(2);
+            assertControlPointType(0, PathType.Linear);
+        }
+
         private void addMovementStep(Vector2 position) => AddStep($"move mouse to {position}", () => InputManager.MoveMouseTo(InputManager.ToScreenSpace(position)));
 
         private void addClickStep(MouseButton button)

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

@@ -6,6 +6,7 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
 {
@@ -28,16 +29,17 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
             circlePiece.UpdateFrom(HitObject);
         }
 
-        protected override bool OnClick(ClickEvent e)
+        protected override bool OnMouseDown(MouseDownEvent e)
         {
-            EndPlacement(true);
-            return true;
+            if (e.Button == MouseButton.Left)
+            {
+                EndPlacement(true);
+                return true;
+            }
+
+            return base.OnMouseDown(e);
         }
 
-        public override void UpdatePosition(Vector2 screenSpacePosition)
-        {
-            BeginPlacement();
-            HitObject.Position = ToLocalSpace(screenSpacePosition);
-        }
+        public override void UpdatePosition(Vector2 screenSpacePosition) => HitObject.Position = ToLocalSpace(screenSpacePosition);
     }
 }

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

@@ -28,7 +28,6 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         public Action<PathControlPointPiece, MouseButtonEvent> RequestSelection;
 
         public readonly BindableBool IsSelected = new BindableBool();
-
         public readonly PathControlPoint ControlPoint;
 
         private readonly Slider slider;
@@ -146,6 +145,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
         protected override bool OnDragStart(DragStartEvent e)
         {
+            if (RequestSelection == null)
+                return false;
+
             if (e.Button == MouseButton.Left)
             {
                 changeHandler?.BeginChange();

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

@@ -82,8 +82,11 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             }
         }
 
-        protected override bool OnClick(ClickEvent e)
+        protected override bool OnMouseDown(MouseDownEvent e)
         {
+            if (e.Button != MouseButton.Left)
+                return base.OnMouseDown(e);
+
             switch (state)
             {
                 case PlacementState.Initial:
@@ -91,9 +94,6 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
                     break;
 
                 case PlacementState.Body:
-                    if (e.Button != MouseButton.Left)
-                        break;
-
                     if (canPlaceNewControlPoint(out var lastPoint))
                     {
                         // Place a new point by detatching the current cursor.
@@ -111,7 +111,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
                         currentSegmentLength = 1;
                     }
 
-                    return true;
+                    break;
             }
 
             return true;

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

@@ -23,6 +23,8 @@ namespace osu.Game.Rulesets.Osu.Mods
         private const double fade_in_duration_multiplier = 0.4;
         private const double fade_out_duration_multiplier = 0.3;
 
+        protected override bool IsFirstHideableObject(DrawableHitObject hitObject) => !(hitObject is DrawableSpinner);
+
         public override void ApplyToDrawableHitObjects(IEnumerable<DrawableHitObject> drawables)
         {
             static void adjustFadeIn(OsuHitObject h) => h.TimeFadeIn = h.TimePreempt * fade_in_duration_multiplier;

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

@@ -11,11 +11,12 @@ using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Play;
 using static osu.Game.Input.Handlers.ReplayInputHandler;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
-    public class OsuModRelax : ModRelax, IUpdatableByPlayfield, IApplicableToDrawableRuleset<OsuHitObject>
+    public class OsuModRelax : ModRelax, IUpdatableByPlayfield, IApplicableToDrawableRuleset<OsuHitObject>, IApplicableToPlayer
     {
         public override string Description => @"You don't need to click. Give your clicking/tapping fingers a break from the heat of things.";
         public override Type[] IncompatibleMods => base.IncompatibleMods.Append(typeof(OsuModAutopilot)).ToArray();
@@ -33,15 +34,30 @@ namespace osu.Game.Rulesets.Osu.Mods
         private ReplayState<OsuAction> state;
         private double lastStateChangeTime;
 
+        private bool hasReplay;
+
         public void ApplyToDrawableRuleset(DrawableRuleset<OsuHitObject> drawableRuleset)
         {
             // grab the input manager for future use.
             osuInputManager = (OsuInputManager)drawableRuleset.KeyBindingInputManager;
+        }
+
+        public void ApplyToPlayer(Player player)
+        {
+            if (osuInputManager.ReplayInputHandler != null)
+            {
+                hasReplay = true;
+                return;
+            }
+
             osuInputManager.AllowUserPresses = false;
         }
 
         public void Update(Playfield playfield)
         {
+            if (hasReplay)
+                return;
+
             bool requiresHold = false;
             bool requiresHit = false;
 

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs

@@ -125,7 +125,11 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                     return new DrawableSliderTail(slider, tail);
 
                 case SliderHeadCircle head:
-                    return new DrawableSliderHead(slider, head) { OnShake = Shake };
+                    return new DrawableSliderHead(slider, head)
+                    {
+                        OnShake = Shake,
+                        CheckHittable = (d, t) => CheckHittable?.Invoke(d, t) ?? true
+                    };
 
                 case SliderTick tick:
                     return new DrawableSliderTick(tick) { Position = tick.Position - slider.Position };

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

@@ -1,16 +1,17 @@
 // 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.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
     /// <summary>
-    /// Ensures that <see cref="HitObject"/>s are hit in-order.
+    /// Ensures that <see cref="HitObject"/>s are hit in-order. Affectionately known as "note lock".
     /// If a <see cref="HitObject"/> is hit out of order:
     /// <list type="number">
     /// <item><description>The hit is blocked if it occurred earlier than the previous <see cref="HitObject"/>'s start time.</description></item>
@@ -36,13 +37,9 @@ namespace osu.Game.Rulesets.Osu.UI
         {
             DrawableHitObject blockingObject = null;
 
-            // Find the last hitobject which blocks future hits.
-            foreach (var obj in hitObjectContainer.AliveObjects)
+            foreach (var obj in enumerateHitObjectsUpTo(hitObject.HitObject.StartTime))
             {
-                if (obj == hitObject)
-                    break;
-
-                if (drawableCanBlockFutureHits(obj))
+                if (hitObjectCanBlockFutureHits(obj))
                     blockingObject = obj;
             }
 
@@ -54,74 +51,56 @@ namespace osu.Game.Rulesets.Osu.UI
             // 1. The last blocking hitobject has been judged.
             // 2. The current time is after the last hitobject's start time.
             // Hits at exactly the same time as the blocking hitobject are allowed for maps that contain simultaneous hitobjects (e.g. /b/372245).
-            if (blockingObject.Judged || time >= blockingObject.HitObject.StartTime)
-                return true;
-
-            return false;
+            return blockingObject.Judged || time >= blockingObject.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(HitObject hitObject)
+        public void HandleHit(DrawableHitObject hitObject)
         {
             // Hitobjects which themselves don't block future hitobjects don't cause misses (e.g. slider ticks, spinners).
             if (!hitObjectCanBlockFutureHits(hitObject))
                 return;
 
-            double maximumTime = hitObject.StartTime;
+            if (!IsHittable(hitObject, hitObject.HitObject.StartTime + hitObject.Result.TimeOffset))
+                throw new InvalidOperationException($"A {hitObject} was hit before it became hittable!");
 
-            // Iterate through and apply miss results to all top-level and nested hitobjects which block future hits.
-            foreach (var obj in hitObjectContainer.AliveObjects)
+            foreach (var obj in enumerateHitObjectsUpTo(hitObject.HitObject.StartTime))
             {
-                if (obj.Judged || obj.HitObject.StartTime >= maximumTime)
+                if (obj.Judged)
                     continue;
 
-                if (hitObjectCanBlockFutureHits(obj.HitObject))
-                    applyMiss(obj);
-
-                foreach (var nested in obj.NestedHitObjects)
-                {
-                    if (nested.Judged || nested.HitObject.StartTime >= maximumTime)
-                        continue;
-
-                    if (hitObjectCanBlockFutureHits(nested.HitObject))
-                        applyMiss(nested);
-                }
+                if (hitObjectCanBlockFutureHits(obj))
+                    ((DrawableOsuHitObject)obj).MissForcefully();
             }
-
-            static void applyMiss(DrawableHitObject obj) => ((DrawableOsuHitObject)obj).MissForcefully();
-        }
-
-        /// <summary>
-        /// Whether a <see cref="DrawableHitObject"/> blocks hits on future <see cref="DrawableHitObject"/>s until its start time is reached.
-        /// </summary>
-        /// <remarks>
-        /// This will ONLY match on top-most <see cref="DrawableHitObject"/>s.
-        /// </remarks>
-        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to test.</param>
-        private static bool drawableCanBlockFutureHits(DrawableHitObject hitObject)
-        {
-            // Special considerations for slider tails aren't required since only top-most drawable hitobjects are being iterated over.
-            return hitObject is DrawableHitCircle || hitObject is DrawableSlider;
         }
 
         /// <summary>
         /// Whether a <see cref="HitObject"/> blocks hits on future <see cref="HitObject"/>s until its start time is reached.
         /// </summary>
-        /// <remarks>
-        /// This is more rigorous and may not match on top-most <see cref="HitObject"/>s as <see cref="drawableCanBlockFutureHits"/> does.
-        /// </remarks>
         /// <param name="hitObject">The <see cref="HitObject"/> to test.</param>
-        private static bool hitObjectCanBlockFutureHits(HitObject hitObject)
-        {
-            // Unlike the above we will receive slider tails, but they do not block future hits.
-            if (hitObject is SliderTailCircle)
-                return false;
+        private static bool hitObjectCanBlockFutureHits(DrawableHitObject hitObject)
+            => hitObject is DrawableHitCircle;
 
-            // All other hitcircles continue to block future hits.
-            return hitObject is HitCircle;
+        private IEnumerable<DrawableHitObject> enumerateHitObjectsUpTo(double targetTime)
+        {
+            foreach (var obj in hitObjectContainer.AliveObjects)
+            {
+                if (obj.HitObject.StartTime >= targetTime)
+                    yield break;
+
+                yield return obj;
+
+                foreach (var nestedObj in obj.NestedHitObjects)
+                {
+                    if (nestedObj.HitObject.StartTime >= targetTime)
+                        break;
+
+                    yield return nestedObj;
+                }
+            }
         }
     }
 }

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

@@ -86,7 +86,7 @@ namespace osu.Game.Rulesets.Osu.UI
         private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
         {
             // Hitobjects that block future hits should miss previous hitobjects if they're hit out-of-order.
-            hitPolicy.HandleHit(result.HitObject);
+            hitPolicy.HandleHit(judgedObject);
 
             if (!judgedObject.DisplayResult || !DisplayJudgements.Value)
                 return;

osu.Game.Rulesets.Taiko.Tests/Skinning/TaikoSkinnableTestScene.cs

@@ -6,7 +6,7 @@ using System.Collections.Generic;
 using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Taiko.Tests
+namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     public abstract class TaikoSkinnableTestScene : SkinnableTestScene
     {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableDrumRoll.cs

@@ -0,0 +1,86 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Rulesets.Taiko.Objects.Drawables;
+using osu.Game.Rulesets.Taiko.Skinning;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests.Skinning
+{
+    [TestFixture]
+    public class TestSceneDrawableDrumRoll : TaikoSkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
+        {
+            typeof(DrawableDrumRoll),
+            typeof(DrawableDrumRollTick),
+            typeof(LegacyDrumRoll),
+        }).ToList();
+
+        [Cached(typeof(IScrollingInfo))]
+        private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
+        {
+            Direction = { Value = ScrollingDirection.Left },
+            TimeRange = { Value = 5000 },
+        };
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            AddStep("Drum roll", () => SetContents(() =>
+            {
+                var hoc = new ScrollingHitObjectContainer();
+
+                hoc.Add(new DrawableDrumRoll(createDrumRollAtCurrentTime())
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Width = 500,
+                });
+
+                return hoc;
+            }));
+
+            AddStep("Drum roll (strong)", () => SetContents(() =>
+            {
+                var hoc = new ScrollingHitObjectContainer();
+
+                hoc.Add(new DrawableDrumRoll(createDrumRollAtCurrentTime(true))
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Width = 500,
+                });
+
+                return hoc;
+            }));
+        }
+
+        private DrumRoll createDrumRollAtCurrentTime(bool strong = false)
+        {
+            var drumroll = new DrumRoll
+            {
+                IsStrong = strong,
+                StartTime = Time.Current + 1000,
+                Duration = 4000,
+            };
+
+            var cpi = new ControlPointInfo();
+            cpi.Add(0, new TimingControlPoint { BeatLength = 500 });
+
+            drumroll.ApplyDefaults(cpi, new BeatmapDifficulty());
+
+            return drumroll;
+        }
+    }
+}

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableHit.cs

@@ -13,7 +13,7 @@ using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Skinning;
 
-namespace osu.Game.Rulesets.Taiko.Tests
+namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     [TestFixture]
     public class TestSceneDrawableHit : TaikoSkinnableTestScene
@@ -24,6 +24,7 @@ namespace osu.Game.Rulesets.Taiko.Tests
             typeof(DrawableCentreHit),
             typeof(DrawableRimHit),
             typeof(LegacyHit),
+            typeof(LegacyCirclePiece),
         }).ToList();
 
         [BackgroundDependencyLoader]

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs

@@ -6,14 +6,14 @@ using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osuTK;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.Taiko.UI;
+using osuTK;
 
-namespace osu.Game.Rulesets.Taiko.Tests
+namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     [TestFixture]
     public class TestSceneInputDrum : TaikoSkinnableTestScene

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneTaikoPlayfield.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 System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Taiko.Skinning;
+using osu.Game.Rulesets.Taiko.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests.Skinning
+{
+    public class TestSceneTaikoPlayfield : TaikoSkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
+        {
+            typeof(TaikoHitTarget),
+            typeof(TaikoLegacyHitTarget),
+            typeof(PlayfieldBackgroundRight),
+        }).ToList();
+
+        [Cached(typeof(IScrollingInfo))]
+        private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
+        {
+            Direction = { Value = ScrollingDirection.Left },
+            TimeRange = { Value = 5000 },
+        };
+
+        public TestSceneTaikoPlayfield()
+        {
+            AddStep("Load playfield", () => SetContents(() => new TaikoPlayfield(new ControlPointInfo())
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+            }));
+
+            AddRepeatStep("change height", () => this.ChildrenOfType<TaikoPlayfield>().ForEach(p => p.Height = Math.Max(0.2f, (p.Height + 0.2f) % 1f)), 50);
+        }
+    }
+}

osu.Game.Rulesets.Taiko.Tests/TestSceneHits.cs

@@ -24,7 +24,7 @@ using osuTK;
 namespace osu.Game.Rulesets.Taiko.Tests
 {
     [TestFixture]
-    public class TestSceneTaikoPlayfield : OsuTestScene
+    public class TestSceneHits : OsuTestScene
     {
         private const double default_duration = 1000;
         private const float scroll_time = 1000;

osu.Game.Rulesets.Taiko.Tests/TestSceneSwellJudgements.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Taiko.Tests
         [Test]
         public void TestZeroTickTimeOffsets()
         {
-            AddUntilStep("gameplay finished", () => Player.ScoreProcessor.HasCompleted);
+            AddUntilStep("gameplay finished", () => Player.ScoreProcessor.HasCompleted.Value);
             AddAssert("all tick offsets are 0", () => Player.Results.Where(r => r.HitObject is SwellTick).All(r => r.TimeOffset == 0));
         }
 

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

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
         /// osu! is generally slower than taiko, so a factor is added to increase
         /// speed. This must be used everywhere slider length or beat length is used.
         /// </summary>
-        private const float legacy_velocity_multiplier = 1.4f;
+        public const float LEGACY_VELOCITY_MULTIPLIER = 1.4f;
 
         /// <summary>
         /// Because swells are easier in taiko than spinners are in osu!,
@@ -52,7 +52,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
             // Rewrite the beatmap info to add the slider velocity multiplier
             original.BeatmapInfo = original.BeatmapInfo.Clone();
             original.BeatmapInfo.BaseDifficulty = original.BeatmapInfo.BaseDifficulty.Clone();
-            original.BeatmapInfo.BaseDifficulty.SliderMultiplier *= legacy_velocity_multiplier;
+            original.BeatmapInfo.BaseDifficulty.SliderMultiplier *= LEGACY_VELOCITY_MULTIPLIER;
 
             Beatmap<TaikoHitObject> converted = base.ConvertBeatmap(original);
 
@@ -92,7 +92,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
                     double speedAdjustedBeatLength = timingPoint.BeatLength / speedAdjustment;
 
                     // The true distance, accounting for any repeats. This ends up being the drum roll distance later
-                    double distance = distanceData.Distance * spans * legacy_velocity_multiplier;
+                    double distance = distanceData.Distance * spans * LEGACY_VELOCITY_MULTIPLIER;
 
                     // The velocity of the taiko hit object - calculated as the velocity of a drum roll
                     double taikoVelocity = taiko_base_distance * beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier / speedAdjustedBeatLength;

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableCentreHit.cs

@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces;
 using osu.Game.Skinning;
 
@@ -16,7 +15,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
         }
 
-        protected override CompositeDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.CentreHit),
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.CentreHit),
             _ => new CentreHitCirclePiece(), confineMode: ConfineMode.ScaleToFit);
     }
 }

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs

@@ -14,6 +14,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -29,25 +31,29 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         /// </summary>
         private int rollingHits;
 
-        private readonly Container<DrawableDrumRollTick> tickContainer;
+        private Container tickContainer;
 
         private Color4 colourIdle;
         private Color4 colourEngaged;
 
-        private ElongatedCirclePiece elongatedPiece;
-
         public DrawableDrumRoll(DrumRoll drumRoll)
             : base(drumRoll)
         {
             RelativeSizeAxes = Axes.Y;
-            elongatedPiece.Add(tickContainer = new Container<DrawableDrumRollTick> { RelativeSizeAxes = Axes.Both });
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            elongatedPiece.AccentColour = colourIdle = colours.YellowDark;
+            colourIdle = colours.YellowDark;
             colourEngaged = colours.YellowDarker;
+
+            updateColour();
+
+            Content.Add(tickContainer = new Container { RelativeSizeAxes = Axes.Both });
+
+            if (MainPiece.Drawable is IHasAccentColour accentMain)
+                accentMain.AccentColour = colourIdle;
         }
 
         protected override void LoadComplete()
@@ -86,7 +92,8 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             return base.CreateNestedHitObject(hitObject);
         }
 
-        protected override CompositeDrawable CreateMainPiece() => elongatedPiece = new ElongatedCirclePiece();
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.DrumRollBody),
+            _ => new ElongatedCirclePiece());
 
         public override bool OnPressed(TaikoAction action) => false;
 
@@ -102,8 +109,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
             rollingHits = Math.Clamp(rollingHits, 0, rolling_hits_for_engaged_colour);
 
-            Color4 newColour = Interpolation.ValueAt((float)rollingHits / rolling_hits_for_engaged_colour, colourIdle, colourEngaged, 0, 1);
-            (MainPiece as IHasAccentColour)?.FadeAccent(newColour, 100);
+            updateColour();
         }
 
         protected override void CheckForResult(bool userTriggered, double timeOffset)
@@ -132,8 +138,22 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             }
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            OriginPosition = new Vector2(DrawHeight);
+            Content.X = DrawHeight / 2;
+        }
+
         protected override DrawableStrongNestedHit CreateStrongHit(StrongHitObject hitObject) => new StrongNestedHit(hitObject, this);
 
+        private void updateColour()
+        {
+            Color4 newColour = Interpolation.ValueAt((float)rollingHits / rolling_hits_for_engaged_colour, colourIdle, colourEngaged, 0, 1);
+            (MainPiece.Drawable as IHasAccentColour)?.FadeAccent(newColour, 100);
+        }
+
         private class StrongNestedHit : DrawableStrongNestedHit
         {
             public StrongNestedHit(StrongHitObject strong, DrawableDrumRoll drumRoll)

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRollTick.cs

@@ -3,10 +3,10 @@
 
 using System;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -20,10 +20,11 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         public override bool DisplayResult => false;
 
-        protected override CompositeDrawable CreateMainPiece() => new TickPiece
-        {
-            Filled = HitObject.FirstTick
-        };
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.DrumRollTick),
+            _ => new TickPiece
+            {
+                Filled = HitObject.FirstTick
+            });
 
         protected override void CheckForResult(bool userTriggered, double timeOffset)
         {

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableHit.cs

@@ -92,8 +92,6 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             // The input manager processes all input prior to us updating, so this is the perfect time
             // for us to remove the extra press blocking, before input is handled in the next frame
             pressHandledThisFrame = false;
-
-            Size = BaseSize * Parent.RelativeChildSize;
         }
 
         protected override void UpdateStateTransforms(ArmedState state)
@@ -116,7 +114,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                     // If we're far enough away from the left stage, we should bring outselves in front of it
                     ProxyContent();
 
-                    var flash = (MainPiece as CirclePiece)?.FlashBox;
+                    var flash = (MainPiece.Drawable as CirclePiece)?.FlashBox;
                     flash?.FadeTo(0.9f).FadeOut(300);
 
                     const float gravity_time = 300;

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableRimHit.cs

@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces;
 using osu.Game.Skinning;
 
@@ -16,7 +15,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
         }
 
-        protected override CompositeDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.RimHit),
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.RimHit),
             _ => new RimHitCirclePiece(), confineMode: ConfineMode.ScaleToFit);
     }
 }

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwell.cs

@@ -14,6 +14,7 @@ using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -114,12 +115,13 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             targetRing.BorderColour = colours.YellowDark.Opacity(0.25f);
         }
 
-        protected override CompositeDrawable CreateMainPiece() => new SwellCirclePiece
-        {
-            // to allow for rotation transform
-            Anchor = Anchor.Centre,
-            Origin = Anchor.Centre,
-        };
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.Swell),
+            _ => new SwellCirclePiece
+            {
+                // to allow for rotation transform
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+            });
 
         protected override void LoadComplete()
         {
@@ -184,7 +186,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                     .Then()
                     .FadeTo(completion / 8, 2000, Easing.OutQuint);
 
-                MainPiece.RotateTo((float)(completion * HitObject.Duration / 8), 4000, Easing.OutQuint);
+                MainPiece.Drawable.RotateTo((float)(completion * HitObject.Duration / 8), 4000, Easing.OutQuint);
 
                 expandingRing.ScaleTo(1f + Math.Min(target_ring_scale - 1f, (target_ring_scale - 1f) * completion * 1.3f), 260, Easing.OutQuint);
 

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwellTick.cs

@@ -2,9 +2,9 @@
 // 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.Scoring;
 using osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -31,6 +31,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         public override bool OnPressed(TaikoAction action) => false;
 
-        protected override CompositeDrawable CreateMainPiece() => new TickPiece();
+        protected override SkinnableDrawable CreateMainPiece() => new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.DrumRollTick),
+            _ => new TickPiece());
     }
 }

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs

@@ -11,6 +11,7 @@ using System.Collections.Generic;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Game.Rulesets.Objects;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -44,7 +45,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         /// <summary>
         /// Moves <see cref="Content"/> to a layer proxied above the playfield.
-        /// Does nothing is content is already proxied.
+        /// Does nothing if content is already proxied.
         /// </summary>
         protected void ProxyContent()
         {
@@ -115,7 +116,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         public new TObject HitObject;
 
         protected readonly Vector2 BaseSize;
-        protected readonly CompositeDrawable MainPiece;
+        protected readonly SkinnableDrawable MainPiece;
 
         private readonly Container<DrawableStrongNestedHit> strongHitContainer;
 
@@ -167,7 +168,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         // Normal and clap samples are handled by the drum
         protected override IEnumerable<HitSampleInfo> GetSamples() => HitObject.Samples.Where(s => s.Name != HitSampleInfo.HIT_NORMAL && s.Name != HitSampleInfo.HIT_CLAP);
 
-        protected abstract CompositeDrawable CreateMainPiece();
+        protected abstract SkinnableDrawable CreateMainPiece();
 
         /// <summary>
         /// Creates the handler for this <see cref="DrawableHitObject"/>'s <see cref="StrongHitObject"/>.

osu.Game.Rulesets.Taiko/Objects/Drawables/Pieces/CirclePiece.cs

@@ -10,6 +10,7 @@ using osuTK.Graphics;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Framework.Audio.Track;
 using osu.Framework.Graphics.Effects;
+using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces
@@ -21,7 +22,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces
     /// for a usage example.
     /// </para>
     /// </summary>
-    public abstract class CirclePiece : BeatSyncedContainer
+    public abstract class CirclePiece : BeatSyncedContainer, IHasAccentColour
     {
         public const float SYMBOL_SIZE = 0.45f;
         public const float SYMBOL_BORDER = 8;

osu.Game.Rulesets.Taiko/Objects/Drawables/Pieces/ElongatedCirclePiece.cs

@@ -1,7 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Game.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces
 {
@@ -12,18 +14,15 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables.Pieces
             RelativeSizeAxes = Axes.Y;
         }
 
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            AccentColour = colours.YellowDark;
+        }
+
         protected override void Update()
         {
             base.Update();
-
-            var padding = Content.DrawHeight * Content.Width / 2;
-
-            Content.Padding = new MarginPadding
-            {
-                Left = padding,
-                Right = padding,
-            };
-
             Width = Parent.DrawSize.X + DrawHeight;
         }
     }

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

@@ -3,15 +3,20 @@
 
 using osu.Game.Rulesets.Objects.Types;
 using System;
+using System.Collections.Generic;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.Taiko.Beatmaps;
 using osu.Game.Rulesets.Taiko.Judgements;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects
 {
-    public class DrumRoll : TaikoHitObject, IHasEndTime
+    public class DrumRoll : TaikoHitObject, IHasCurve
     {
         /// <summary>
         /// Drum roll distance that results in a duration of 1 speed-adjusted beat length.
@@ -26,6 +31,11 @@ namespace osu.Game.Rulesets.Taiko.Objects
 
         public double Duration { get; set; }
 
+        /// <summary>
+        /// Velocity of this <see cref="DrumRoll"/>.
+        /// </summary>
+        public double Velocity { get; private set; }
+
         /// <summary>
         /// Numer of ticks per beat length.
         /// </summary>
@@ -54,6 +64,10 @@ namespace osu.Game.Rulesets.Taiko.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
+            DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
+
+            double scoringDistance = base_distance * difficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier;
+            Velocity = scoringDistance / timingPoint.BeatLength;
 
             tickSpacing = timingPoint.BeatLength / TickRate;
             overallDifficulty = difficulty.OverallDifficulty;
@@ -93,5 +107,18 @@ namespace osu.Game.Rulesets.Taiko.Objects
         public override Judgement CreateJudgement() => new TaikoDrumRollJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
+
+        #region LegacyBeatmapEncoder
+
+        double IHasDistance.Distance => Duration * Velocity;
+
+        int IHasRepeats.RepeatCount { get => 0; set { } }
+
+        List<IList<HitSampleInfo>> IHasRepeats.NodeSamples => new List<IList<HitSampleInfo>>();
+
+        SliderPath IHasCurve.Path
+            => new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(1) }, ((IHasDistance)this).Distance / TaikoBeatmapConverter.LEGACY_VELOCITY_MULTIPLIER);
+
+        #endregion
     }
 }

osu.Game.Rulesets.Taiko/Skinning/LegacyCirclePiece.cs

@@ -0,0 +1,96 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Animations;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Taiko.Objects.Drawables;
+using osu.Game.Skinning;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.Skinning
+{
+    public class LegacyCirclePiece : CompositeDrawable, IHasAccentColour
+    {
+        private Drawable backgroundLayer;
+
+        public LegacyCirclePiece()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin, DrawableHitObject drawableHitObject)
+        {
+            Drawable getDrawableFor(string lookup)
+            {
+                const string normal_hit = "taikohit";
+                const string big_hit = "taikobig";
+
+                string prefix = ((drawableHitObject as DrawableTaikoHitObject)?.HitObject.IsStrong ?? false) ? big_hit : normal_hit;
+
+                return skin.GetAnimation($"{prefix}{lookup}", true, false) ??
+                       // fallback to regular size if "big" version doesn't exist.
+                       skin.GetAnimation($"{normal_hit}{lookup}", true, false);
+            }
+
+            // backgroundLayer is guaranteed to exist due to the pre-check in TaikoLegacySkinTransformer.
+            AddInternal(backgroundLayer = getDrawableFor("circle"));
+
+            var foregroundLayer = getDrawableFor("circleoverlay");
+            if (foregroundLayer != null)
+                AddInternal(foregroundLayer);
+
+            // Animations in taiko skins are used in a custom way (>150 combo and animating in time with beat).
+            // For now just stop at first frame for sanity.
+            foreach (var c in InternalChildren)
+            {
+                (c as IFramedAnimation)?.Stop();
+
+                c.Anchor = Anchor.Centre;
+                c.Origin = Anchor.Centre;
+            }
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateAccentColour();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            // Not all skins (including the default osu-stable) have similar sizes for "hitcircle" and "hitcircleoverlay".
+            // This ensures they are scaled relative to each other but also match the expected DrawableHit size.
+            foreach (var c in InternalChildren)
+                c.Scale = new Vector2(DrawHeight / 128);
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (value == accentColour)
+                    return;
+
+                accentColour = value;
+                if (IsLoaded)
+                    updateAccentColour();
+            }
+        }
+
+        private void updateAccentColour()
+        {
+            backgroundLayer.Colour = accentColour;
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Skinning/LegacyDrumRoll.cs

@@ -0,0 +1,83 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.Skinning
+{
+    public class LegacyDrumRoll : CompositeDrawable, IHasAccentColour
+    {
+        private LegacyCirclePiece headCircle;
+
+        private Sprite body;
+
+        private Sprite end;
+
+        public LegacyDrumRoll()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin, OsuColour colours)
+        {
+            InternalChildren = new Drawable[]
+            {
+                end = new Sprite
+                {
+                    Anchor = Anchor.CentreRight,
+                    Origin = Anchor.CentreLeft,
+                    RelativeSizeAxes = Axes.Both,
+                    Texture = skin.GetTexture("taiko-roll-end"),
+                    FillMode = FillMode.Fit,
+                },
+                body = new Sprite
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Texture = skin.GetTexture("taiko-roll-middle"),
+                },
+                headCircle = new LegacyCirclePiece
+                {
+                    RelativeSizeAxes = Axes.Y,
+                },
+            };
+
+            AccentColour = colours.YellowDark;
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateAccentColour();
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (value == accentColour)
+                    return;
+
+                accentColour = value;
+                if (IsLoaded)
+                    updateAccentColour();
+            }
+        }
+
+        private void updateAccentColour()
+        {
+            headCircle.AccentColour = accentColour;
+            body.Colour = accentColour;
+            end.Colour = accentColour;
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Skinning/LegacyHit.cs

@@ -2,90 +2,25 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Animations;
-using osu.Framework.Graphics.Containers;
-using osu.Game.Graphics;
-using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osu.Game.Skinning;
-using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning
 {
-    public class LegacyHit : CompositeDrawable, IHasAccentColour
+    public class LegacyHit : LegacyCirclePiece
     {
         private readonly TaikoSkinComponents component;
 
-        private Drawable backgroundLayer;
-
         public LegacyHit(TaikoSkinComponents component)
         {
             this.component = component;
-
-            RelativeSizeAxes = Axes.Both;
         }
 
         [BackgroundDependencyLoader]
-        private void load(ISkinSource skin, DrawableHitObject drawableHitObject)
+        private void load()
         {
-            Drawable getDrawableFor(string lookup)
-            {
-                const string normal_hit = "taikohit";
-                const string big_hit = "taikobig";
-
-                string prefix = ((drawableHitObject as DrawableTaikoHitObject)?.HitObject.IsStrong ?? false) ? big_hit : normal_hit;
-
-                return skin.GetAnimation($"{prefix}{lookup}", true, false) ??
-                       // fallback to regular size if "big" version doesn't exist.
-                       skin.GetAnimation($"{normal_hit}{lookup}", true, false);
-            }
-
-            // backgroundLayer is guaranteed to exist due to the pre-check in TaikoLegacySkinTransformer.
-            AddInternal(backgroundLayer = getDrawableFor("circle"));
-
-            var foregroundLayer = getDrawableFor("circleoverlay");
-            if (foregroundLayer != null)
-                AddInternal(foregroundLayer);
-
-            // Animations in taiko skins are used in a custom way (>150 combo and animating in time with beat).
-            // For now just stop at first frame for sanity.
-            foreach (var c in InternalChildren)
-            {
-                (c as IFramedAnimation)?.Stop();
-
-                c.Anchor = Anchor.Centre;
-                c.Origin = Anchor.Centre;
-            }
-
             AccentColour = component == TaikoSkinComponents.CentreHit
                 ? new Color4(235, 69, 44, 255)
                 : new Color4(67, 142, 172, 255);
         }
-
-        protected override void Update()
-        {
-            base.Update();
-
-            // Not all skins (including the default osu-stable) have similar sizes for "hitcircle" and "hitcircleoverlay".
-            // This ensures they are scaled relative to each other but also match the expected DrawableHit size.
-            foreach (var c in InternalChildren)
-                c.Scale = new Vector2(DrawWidth / 128);
-        }
-
-        private Color4 accentColour;
-
-        public Color4 AccentColour
-        {
-            get => accentColour;
-            set
-            {
-                if (value == accentColour)
-                    return;
-
-                backgroundLayer.Colour = accentColour = value;
-            }
-        }
     }
 }

osu.Game.Rulesets.Taiko/Skinning/LegacyInputDrum.cs

@@ -20,36 +20,41 @@ namespace osu.Game.Rulesets.Taiko.Skinning
     {
         private LegacyHalfDrum left;
         private LegacyHalfDrum right;
+        private Container content;
 
         public LegacyInputDrum()
         {
-            Size = new Vector2(180, 200);
+            RelativeSizeAxes = Axes.Both;
         }
 
         [BackgroundDependencyLoader]
         private void load(ISkinSource skin)
         {
-            Children = new Drawable[]
+            Child = content = new Container
             {
-                new Sprite
+                Size = new Vector2(180, 200),
+                Children = new Drawable[]
                 {
-                    Texture = skin.GetTexture("taiko-bar-left")
-                },
-                left = new LegacyHalfDrum(false)
-                {
-                    Name = "Left Half",
-                    RelativeSizeAxes = Axes.Both,
-                    RimAction = TaikoAction.LeftRim,
-                    CentreAction = TaikoAction.LeftCentre
-                },
-                right = new LegacyHalfDrum(true)
-                {
-                    Name = "Right Half",
-                    RelativeSizeAxes = Axes.Both,
-                    Origin = Anchor.TopRight,
-                    Scale = new Vector2(-1, 1),
-                    RimAction = TaikoAction.RightRim,
-                    CentreAction = TaikoAction.RightCentre
+                    new Sprite
+                    {
+                        Texture = skin.GetTexture("taiko-bar-left")
+                    },
+                    left = new LegacyHalfDrum(false)
+                    {
+                        Name = "Left Half",
+                        RelativeSizeAxes = Axes.Both,
+                        RimAction = TaikoAction.LeftRim,
+                        CentreAction = TaikoAction.LeftCentre
+                    },
+                    right = new LegacyHalfDrum(true)
+                    {
+                        Name = "Right Half",
+                        RelativeSizeAxes = Axes.Both,
+                        Origin = Anchor.TopRight,
+                        Scale = new Vector2(-1, 1),
+                        RimAction = TaikoAction.RightRim,
+                        CentreAction = TaikoAction.RightCentre
+                    }
                 }
             };
 
@@ -60,7 +65,7 @@ namespace osu.Game.Rulesets.Taiko.Skinning
             const float ratio = 1.6f;
 
             // because the right half is flipped, we need to position using width - position to get the true "topleft" origin position
-            float negativeScaleAdjust = Width / ratio;
+            float negativeScaleAdjust = content.Width / ratio;
 
             if (skin.GetConfig<LegacySkinConfiguration.LegacySetting, decimal>(LegacySkinConfiguration.LegacySetting.Version)?.Value >= 2.1m)
             {
@@ -78,6 +83,15 @@ namespace osu.Game.Rulesets.Taiko.Skinning
             }
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            // Relying on RelativeSizeAxes.Both + FillMode.Fit doesn't work due to the precise pixel layout requirements.
+            // This is a bit ugly but makes the non-legacy implementations a lot cleaner to implement.
+            content.Scale = new Vector2(DrawHeight / content.Size.Y);
+        }
+
         /// <summary>
         /// A half-drum. Contains one centre and one rim hit.
         /// </summary>

osu.Game.Rulesets.Taiko/Skinning/TaikoLegacyHitTarget.cs

@@ -0,0 +1,59 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Taiko.UI;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Taiko.Skinning
+{
+    public class TaikoLegacyHitTarget : CompositeDrawable
+    {
+        private Container content;
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            RelativeSizeAxes = Axes.Both;
+
+            InternalChild = content = new Container
+            {
+                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Children = new Drawable[]
+                {
+                    new Sprite
+                    {
+                        Texture = skin.GetTexture("approachcircle"),
+                        Scale = new Vector2(0.73f),
+                        Alpha = 0.7f,
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                    },
+                    new Sprite
+                    {
+                        Texture = skin.GetTexture("taikobigcircle"),
+                        Scale = new Vector2(0.7f),
+                        Alpha = 0.5f,
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                    },
+                }
+            };
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            // Relying on RelativeSizeAxes.Both + FillMode.Fit doesn't work due to the precise pixel layout requirements.
+            // This is a bit ugly but makes the non-legacy implementations a lot cleaner to implement.
+            content.Scale = new Vector2(DrawHeight / TaikoPlayfield.DEFAULT_HEIGHT);
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Skinning/TaikoLegacySkinTransformer.cs

@@ -8,6 +8,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Audio;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Skinning
 {
@@ -27,6 +28,12 @@ namespace osu.Game.Rulesets.Taiko.Skinning
 
             switch (taikoComponent.Component)
             {
+                case TaikoSkinComponents.DrumRollBody:
+                    if (GetTexture("taiko-roll-middle") != null)
+                        return new LegacyDrumRoll();
+
+                    return null;
+
                 case TaikoSkinComponents.InputDrum:
                     if (GetTexture("taiko-bar-left") != null)
                         return new LegacyInputDrum();
@@ -40,6 +47,34 @@ namespace osu.Game.Rulesets.Taiko.Skinning
                         return new LegacyHit(taikoComponent.Component);
 
                     return null;
+
+                case TaikoSkinComponents.DrumRollTick:
+                    return this.GetAnimation("sliderscorepoint", false, false);
+
+                case TaikoSkinComponents.HitTarget:
+                    if (GetTexture("taikobigcircle") != null)
+                        return new TaikoLegacyHitTarget();
+
+                    return null;
+
+                case TaikoSkinComponents.PlayfieldBackgroundRight:
+                    if (GetTexture("taiko-bar-right") != null)
+                    {
+                        return this.GetAnimation("taiko-bar-right", false, false).With(d =>
+                        {
+                            d.RelativeSizeAxes = Axes.Both;
+                            d.Size = Vector2.One;
+                        });
+                    }
+
+                    return null;
+
+                case TaikoSkinComponents.PlayfieldBackgroundLeft:
+                    // This is displayed inside LegacyInputDrum. It is required to be there for layout purposes (can be seen on legacy skins).
+                    if (GetTexture("taiko-bar-right") != null)
+                        return Drawable.Empty();
+
+                    return null;
             }
 
             return source.GetDrawableComponent(component);

osu.Game.Rulesets.Taiko/TaikoSkinComponents.cs

@@ -7,6 +7,12 @@ namespace osu.Game.Rulesets.Taiko
     {
         InputDrum,
         CentreHit,
-        RimHit
+        RimHit,
+        DrumRollBody,
+        DrumRollTick,
+        Swell,
+        HitTarget,
+        PlayfieldBackgroundLeft,
+        PlayfieldBackgroundRight
     }
 }

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

@@ -32,7 +32,7 @@ namespace osu.Game.Rulesets.Taiko.UI
 
             JudgedObject = judgedObject;
 
-            Anchor = Anchor.CentreLeft;
+            Anchor = Anchor.Centre;
             Origin = Anchor.Centre;
 
             RelativeSizeAxes = Axes.Both;

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

@@ -31,7 +31,6 @@ namespace osu.Game.Rulesets.Taiko.UI
             sampleMapping = new DrumSampleMapping(controlPoints);
 
             RelativeSizeAxes = Axes.Both;
-            FillMode = FillMode.Fit;
         }
 
         [BackgroundDependencyLoader]
@@ -40,6 +39,8 @@ namespace osu.Game.Rulesets.Taiko.UI
             Child = new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.InputDrum), _ => new Container
             {
                 RelativeSizeAxes = Axes.Both,
+                FillMode = FillMode.Fit,
+                Scale = new Vector2(0.9f),
                 Children = new Drawable[]
                 {
                     new TaikoHalfDrum(false)

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

@@ -0,0 +1,37 @@
+// 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.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.UI
+{
+    internal class PlayfieldBackgroundLeft : CompositeDrawable
+    {
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            RelativeSizeAxes = Axes.Both;
+            InternalChildren = new Drawable[]
+            {
+                new Box
+                {
+                    Colour = colours.Gray1,
+                    RelativeSizeAxes = Axes.Both,
+                },
+                new Box
+                {
+                    Anchor = Anchor.TopRight,
+                    RelativeSizeAxes = Axes.Y,
+                    Width = 10,
+                    Colour = Framework.Graphics.Colour.ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.6f), Color4.Black.Opacity(0)),
+                },
+            };
+        }
+    }
+}

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

@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Effects;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.UI
+{
+    public class PlayfieldBackgroundRight : CompositeDrawable
+    {
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            Name = "Transparent playfield background";
+            RelativeSizeAxes = Axes.Both;
+            Masking = true;
+            BorderColour = colours.Gray1;
+
+            EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Shadow,
+                Colour = Color4.Black.Opacity(0.2f),
+                Radius = 5,
+            };
+
+            InternalChildren = new Drawable[]
+            {
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = colours.Gray0,
+                    Alpha = 0.6f
+                },
+                new Container
+                {
+                    Name = "Border",
+                    RelativeSizeAxes = Axes.Both,
+                    Masking = true,
+                    MaskingSmoothness = 0,
+                    BorderThickness = 2,
+                    AlwaysPresent = true,
+                    Children = new[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0,
+                            AlwaysPresent = true
+                        }
+                    }
+                }
+            };
+        }
+    }
+}

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

@@ -13,15 +13,17 @@ namespace osu.Game.Rulesets.Taiko.UI
     /// <summary>
     /// A component that is displayed at the hit position in the taiko playfield.
     /// </summary>
-    internal class HitTarget : Container
+    internal class TaikoHitTarget : Container
     {
         /// <summary>
         /// Thickness of all drawn line pieces.
         /// </summary>
         private const float border_thickness = 2.5f;
 
-        public HitTarget()
+        public TaikoHitTarget()
         {
+            RelativeSizeAxes = Axes.Both;
+
             Children = new Drawable[]
             {
                 new Box
@@ -39,7 +41,6 @@ namespace osu.Game.Rulesets.Taiko.UI
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
-                    FillMode = FillMode.Fit,
                     Scale = new Vector2(TaikoHitObject.DEFAULT_STRONG_SIZE),
                     Masking = true,
                     BorderColour = Color4.White,
@@ -61,7 +62,6 @@ namespace osu.Game.Rulesets.Taiko.UI
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
-                    FillMode = FillMode.Fit,
                     Scale = new Vector2(TaikoHitObject.DEFAULT_SIZE),
                     Masking = true,
                     BorderColour = Color4.White,

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

@@ -3,11 +3,8 @@
 
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Effects;
-using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -17,169 +14,113 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Judgements;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
-using osuTK.Graphics;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
     public class TaikoPlayfield : ScrollingPlayfield
     {
+        private readonly ControlPointInfo controlPoints;
+
         /// <summary>
         /// Default height of a <see cref="TaikoPlayfield"/> when inside a <see cref="DrawableTaikoRuleset"/>.
         /// </summary>
         public const float DEFAULT_HEIGHT = 178;
 
-        /// <summary>
-        /// The offset from <see cref="left_area_size"/> which the center of the hit target lies at.
-        /// </summary>
-        public const float HIT_TARGET_OFFSET = 100;
+        private Container<HitExplosion> hitExplosionContainer;
+        private Container<KiaiHitExplosion> kiaiExplosionContainer;
+        private JudgementContainer<DrawableTaikoJudgement> judgementContainer;
+        internal Drawable HitTarget;
 
-        /// <summary>
-        /// The size of the left area of the playfield. This area contains the input drum.
-        /// </summary>
-        private const float left_area_size = 240;
+        private ProxyContainer topLevelHitContainer;
+        private ProxyContainer barlineContainer;
+        private Container rightArea;
+        private Container leftArea;
 
-        private readonly Container<HitExplosion> hitExplosionContainer;
-        private readonly Container<KiaiHitExplosion> kiaiExplosionContainer;
-        private readonly JudgementContainer<DrawableTaikoJudgement> judgementContainer;
-        internal readonly HitTarget HitTarget;
-
-        private readonly ProxyContainer topLevelHitContainer;
-        private readonly ProxyContainer barlineContainer;
-
-        private readonly Container overlayBackgroundContainer;
-        private readonly Container backgroundContainer;
-
-        private readonly Box overlayBackground;
-        private readonly Box background;
+        private Container hitTargetOffsetContent;
 
         public TaikoPlayfield(ControlPointInfo controlPoints)
+        {
+            this.controlPoints = controlPoints;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
         {
             InternalChildren = new Drawable[]
             {
-                backgroundContainer = new Container
-                {
-                    Name = "Transparent playfield background",
-                    RelativeSizeAxes = Axes.Both,
-                    Masking = true,
-                    EdgeEffect = new EdgeEffectParameters
-                    {
-                        Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.2f),
-                        Radius = 5,
-                    },
-                    Children = new Drawable[]
-                    {
-                        background = new Box
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Alpha = 0.6f
-                        },
-                    }
-                },
-                new Container
+                new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.PlayfieldBackgroundRight), _ => new PlayfieldBackgroundRight()),
+                rightArea = new Container
                 {
                     Name = "Right area",
                     RelativeSizeAxes = Axes.Both,
-                    Padding = new MarginPadding { Left = left_area_size },
+                    RelativePositionAxes = Axes.Both,
                     Children = new Drawable[]
                     {
                         new Container
                         {
                             Name = "Masked elements before hit objects",
                             RelativeSizeAxes = Axes.Both,
-                            Padding = new MarginPadding { Left = HIT_TARGET_OFFSET },
-                            Masking = true,
-                            Children = new Drawable[]
+                            FillMode = FillMode.Fit,
+                            Children = new[]
                             {
                                 hitExplosionContainer = new Container<HitExplosion>
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    FillMode = FillMode.Fit,
                                     Blending = BlendingParameters.Additive,
                                 },
-                                HitTarget = new HitTarget
+                                HitTarget = new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.HitTarget), _ => new TaikoHitTarget())
                                 {
-                                    Anchor = Anchor.CentreLeft,
-                                    Origin = Anchor.Centre,
                                     RelativeSizeAxes = Axes.Both,
-                                    FillMode = FillMode.Fit
                                 }
                             }
                         },
-                        barlineContainer = new ProxyContainer
+                        hitTargetOffsetContent = new Container
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Padding = new MarginPadding { Left = HIT_TARGET_OFFSET }
-                        },
-                        new Container
-                        {
-                            Name = "Hit objects",
-                            RelativeSizeAxes = Axes.Both,
-                            Padding = new MarginPadding { Left = HIT_TARGET_OFFSET },
-                            Masking = true,
-                            Child = HitObjectContainer
-                        },
-                        kiaiExplosionContainer = new Container<KiaiHitExplosion>
-                        {
-                            Name = "Kiai hit explosions",
-                            RelativeSizeAxes = Axes.Both,
-                            FillMode = FillMode.Fit,
-                            Margin = new MarginPadding { Left = HIT_TARGET_OFFSET },
-                            Blending = BlendingParameters.Additive
-                        },
-                        judgementContainer = new JudgementContainer<DrawableTaikoJudgement>
-                        {
-                            Name = "Judgements",
-                            RelativeSizeAxes = Axes.Y,
-                            Margin = new MarginPadding { Left = HIT_TARGET_OFFSET },
-                            Blending = BlendingParameters.Additive
+                            Children = new Drawable[]
+                            {
+                                barlineContainer = new ProxyContainer
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                },
+                                new Container
+                                {
+                                    Name = "Hit objects",
+                                    RelativeSizeAxes = Axes.Both,
+                                    Child = HitObjectContainer
+                                },
+                                kiaiExplosionContainer = new Container<KiaiHitExplosion>
+                                {
+                                    Name = "Kiai hit explosions",
+                                    RelativeSizeAxes = Axes.Both,
+                                    FillMode = FillMode.Fit,
+                                    Blending = BlendingParameters.Additive
+                                },
+                                judgementContainer = new JudgementContainer<DrawableTaikoJudgement>
+                                {
+                                    Name = "Judgements",
+                                    RelativeSizeAxes = Axes.Y,
+                                    Blending = BlendingParameters.Additive
+                                },
+                            }
                         },
                     }
                 },
-                overlayBackgroundContainer = new Container
+                leftArea = new Container
                 {
                     Name = "Left overlay",
-                    RelativeSizeAxes = Axes.Y,
-                    Size = new Vector2(left_area_size, 1),
+                    RelativeSizeAxes = Axes.Both,
+                    FillMode = FillMode.Fit,
+                    BorderColour = colours.Gray0,
                     Children = new Drawable[]
                     {
-                        overlayBackground = new Box
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                        },
+                        new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.PlayfieldBackgroundLeft), _ => new PlayfieldBackgroundLeft()),
                         new InputDrum(controlPoints)
                         {
-                            Anchor = Anchor.CentreRight,
-                            Origin = Anchor.CentreRight,
-                            Scale = new Vector2(0.9f),
-                            Margin = new MarginPadding { Right = 20 }
+                            Anchor = Anchor.CentreLeft,
+                            Origin = Anchor.CentreLeft,
                         },
-                        new Box
-                        {
-                            Anchor = Anchor.TopRight,
-                            RelativeSizeAxes = Axes.Y,
-                            Width = 10,
-                            Colour = Framework.Graphics.Colour.ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.6f), Color4.Black.Opacity(0)),
-                        },
-                    }
-                },
-                new Container
-                {
-                    Name = "Border",
-                    RelativeSizeAxes = Axes.Both,
-                    Masking = true,
-                    MaskingSmoothness = 0,
-                    BorderThickness = 2,
-                    AlwaysPresent = true,
-                    Children = new[]
-                    {
-                        new Box
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Alpha = 0,
-                            AlwaysPresent = true
-                        }
                     }
                 },
                 topLevelHitContainer = new ProxyContainer
@@ -190,14 +131,14 @@ namespace osu.Game.Rulesets.Taiko.UI
             };
         }
 
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
+        protected override void Update()
         {
-            overlayBackgroundContainer.BorderColour = colours.Gray0;
-            overlayBackground.Colour = colours.Gray1;
+            base.Update();
 
-            backgroundContainer.BorderColour = colours.Gray1;
-            background.Colour = colours.Gray0;
+            // Padding is required to be updated for elements which are based on "absolute" X sized elements.
+            // This is basically allowing for correct alignment as relative pieces move around them.
+            rightArea.Padding = new MarginPadding { Left = leftArea.DrawWidth };
+            hitTargetOffsetContent.Padding = new MarginPadding { Left = HitTarget.DrawWidth / 2 };
         }
 
         public override void Add(DrawableHitObject h)

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

@@ -241,6 +241,11 @@ namespace osu.Game.Tests.Beatmaps.Formats
             {
                 var controlPoints = decoder.Decode(stream).ControlPointInfo;
 
+                Assert.That(controlPoints.TimingPoints.Count, Is.EqualTo(4));
+                Assert.That(controlPoints.DifficultyPoints.Count, Is.EqualTo(3));
+                Assert.That(controlPoints.EffectPoints.Count, Is.EqualTo(3));
+                Assert.That(controlPoints.SamplePoints.Count, Is.EqualTo(3));
+
                 Assert.That(controlPoints.DifficultyPointAt(500).SpeedMultiplier, Is.EqualTo(1.5).Within(0.1));
                 Assert.That(controlPoints.DifficultyPointAt(1500).SpeedMultiplier, Is.EqualTo(1.5).Within(0.1));
                 Assert.That(controlPoints.DifficultyPointAt(2500).SpeedMultiplier, Is.EqualTo(0.75).Within(0.1));

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

@@ -1,14 +1,23 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Audio.Track;
+using osu.Framework.Graphics.Textures;
 using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.IO;
 using osu.Game.IO.Serialization;
+using osu.Game.Rulesets.Catch;
+using osu.Game.Rulesets.Mania;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Taiko;
 using osu.Game.Tests.Resources;
 
 namespace osu.Game.Tests.Beatmaps.Formats
@@ -16,39 +25,91 @@ namespace osu.Game.Tests.Beatmaps.Formats
     [TestFixture]
     public class LegacyBeatmapEncoderTest
     {
-        private const string normal = "Soleily - Renatus (Gamu) [Insane].osu";
-
         private static IEnumerable<string> allBeatmaps => TestResources.GetStore().GetAvailableResources().Where(res => res.EndsWith(".osu"));
 
         [TestCaseSource(nameof(allBeatmaps))]
-        public void TestDecodeEncodedBeatmap(string name)
+        public void TestBeatmap(string name)
         {
-            var decoded = decode(normal, out var encoded);
+            var decoded = decode(name, out var encoded);
+
+            sort(decoded);
+            sort(encoded);
 
-            Assert.That(decoded.HitObjects.Count, Is.EqualTo(encoded.HitObjects.Count));
             Assert.That(encoded.Serialize(), Is.EqualTo(decoded.Serialize()));
         }
 
-        private Beatmap decode(string filename, out Beatmap encoded)
+        private void sort(IBeatmap beatmap)
         {
-            using (var stream = TestResources.OpenResource(filename))
+            // Sort control points to ensure a sane ordering, as they may be parsed in different orders. This works because each group contains only uniquely-typed control points.
+            foreach (var g in beatmap.ControlPointInfo.Groups)
+            {
+                ArrayList.Adapter((IList)g.ControlPoints).Sort(
+                    Comparer<ControlPoint>.Create((c1, c2) => string.Compare(c1.GetType().ToString(), c2.GetType().ToString(), StringComparison.Ordinal)));
+            }
+        }
+
+        private IBeatmap decode(string filename, out IBeatmap encoded)
+        {
+            using (var stream = TestResources.GetStore().GetStream(filename))
             using (var sr = new LineBufferedReader(stream))
             {
-                var legacyDecoded = new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr);
+                var legacyDecoded = convert(new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr));
 
                 using (var ms = new MemoryStream())
                 using (var sw = new StreamWriter(ms))
-                using (var sr2 = new LineBufferedReader(ms))
+                using (var sr2 = new LineBufferedReader(ms, true))
                 {
                     new LegacyBeatmapEncoder(legacyDecoded).Encode(sw);
-                    sw.Flush();
 
+                    sw.Flush();
                     ms.Position = 0;
 
-                    encoded = new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr2);
+                    encoded = convert(new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr2));
+
                     return legacyDecoded;
                 }
             }
         }
+
+        private IBeatmap convert(IBeatmap beatmap)
+        {
+            switch (beatmap.BeatmapInfo.RulesetID)
+            {
+                case 0:
+                    beatmap.BeatmapInfo.Ruleset = new OsuRuleset().RulesetInfo;
+                    break;
+
+                case 1:
+                    beatmap.BeatmapInfo.Ruleset = new TaikoRuleset().RulesetInfo;
+                    break;
+
+                case 2:
+                    beatmap.BeatmapInfo.Ruleset = new CatchRuleset().RulesetInfo;
+                    break;
+
+                case 3:
+                    beatmap.BeatmapInfo.Ruleset = new ManiaRuleset().RulesetInfo;
+                    break;
+            }
+
+            return new TestWorkingBeatmap(beatmap).GetPlayableBeatmap(beatmap.BeatmapInfo.Ruleset);
+        }
+
+        private class TestWorkingBeatmap : WorkingBeatmap
+        {
+            private readonly IBeatmap beatmap;
+
+            public TestWorkingBeatmap(IBeatmap beatmap)
+                : base(beatmap.BeatmapInfo, null)
+            {
+                this.beatmap = beatmap;
+            }
+
+            protected override IBeatmap GetBeatmap() => beatmap;
+
+            protected override Texture GetBackground() => throw new NotImplementedException();
+
+            protected override Track GetTrack() => throw new NotImplementedException();
+        }
     }
 }

osu.Game.Tests/Beatmaps/ToStringFormattingTest.cs

@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Beatmaps
+{
+    [TestFixture]
+    public class ToStringFormattingTest
+    {
+        [Test]
+        public void TestArtistTitle()
+        {
+            var beatmap = new BeatmapInfo
+            {
+                Metadata = new BeatmapMetadata
+                {
+                    Artist = "artist",
+                    Title = "title"
+                }
+            };
+
+            Assert.That(beatmap.ToString(), Is.EqualTo("artist - title"));
+        }
+
+        [Test]
+        public void TestArtistTitleCreator()
+        {
+            var beatmap = new BeatmapInfo
+            {
+                Metadata = new BeatmapMetadata
+                {
+                    Artist = "artist",
+                    Title = "title",
+                    Author = new User { Username = "creator" }
+                }
+            };
+
+            Assert.That(beatmap.ToString(), Is.EqualTo("artist - title (creator)"));
+        }
+
+        [Test]
+        public void TestArtistTitleCreatorDifficulty()
+        {
+            var beatmap = new BeatmapInfo
+            {
+                Metadata = new BeatmapMetadata
+                {
+                    Artist = "artist",
+                    Title = "title",
+                    Author = new User { Username = "creator" }
+                },
+                Version = "difficulty"
+            };
+
+            Assert.That(beatmap.ToString(), Is.EqualTo("artist - title (creator) [difficulty]"));
+        }
+    }
+}

osu.Game.Tests/Editing/EditorChangeHandlerTest.cs

@@ -5,7 +5,7 @@ using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Screens.Edit;
 
-namespace osu.Game.Tests.Editor
+namespace osu.Game.Tests.Editing
 {
     [TestFixture]
     public class EditorChangeHandlerTest
@@ -15,15 +15,18 @@ namespace osu.Game.Tests.Editor
         {
             var handler = new EditorChangeHandler(new EditorBeatmap(new Beatmap()));
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
+            Assert.That(handler.CanRedo.Value, Is.False);
 
             handler.SaveState();
 
-            Assert.That(handler.HasUndoState, Is.True);
+            Assert.That(handler.CanUndo.Value, Is.True);
+            Assert.That(handler.CanRedo.Value, Is.False);
 
             handler.RestoreState(-1);
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
+            Assert.That(handler.CanRedo.Value, Is.True);
         }
 
         [Test]
@@ -31,20 +34,20 @@ namespace osu.Game.Tests.Editor
         {
             var handler = new EditorChangeHandler(new EditorBeatmap(new Beatmap()));
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
 
             for (int i = 0; i < EditorChangeHandler.MAX_SAVED_STATES; i++)
                 handler.SaveState();
 
-            Assert.That(handler.HasUndoState, Is.True);
+            Assert.That(handler.CanUndo.Value, Is.True);
 
             for (int i = 0; i < EditorChangeHandler.MAX_SAVED_STATES; i++)
             {
-                Assert.That(handler.HasUndoState, Is.True);
+                Assert.That(handler.CanUndo.Value, Is.True);
                 handler.RestoreState(-1);
             }
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
         }
 
         [Test]
@@ -52,20 +55,20 @@ namespace osu.Game.Tests.Editor
         {
             var handler = new EditorChangeHandler(new EditorBeatmap(new Beatmap()));
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
 
             for (int i = 0; i < EditorChangeHandler.MAX_SAVED_STATES * 2; i++)
                 handler.SaveState();
 
-            Assert.That(handler.HasUndoState, Is.True);
+            Assert.That(handler.CanUndo.Value, Is.True);
 
             for (int i = 0; i < EditorChangeHandler.MAX_SAVED_STATES; i++)
             {
-                Assert.That(handler.HasUndoState, Is.True);
+                Assert.That(handler.CanUndo.Value, Is.True);
                 handler.RestoreState(-1);
             }
 
-            Assert.That(handler.HasUndoState, Is.False);
+            Assert.That(handler.CanUndo.Value, Is.False);
         }
     }
 }

osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs

@@ -17,7 +17,7 @@ using osu.Game.Screens.Edit;
 using osuTK;
 using Decoder = osu.Game.Beatmaps.Formats.Decoder;
 
-namespace osu.Game.Tests.Editor
+namespace osu.Game.Tests.Editing
 {
     [TestFixture]
     public class LegacyEditorBeatmapPatcherTest

osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs

@@ -14,7 +14,7 @@ using osu.Game.Rulesets.Osu.Edit;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Tests.Editor
+namespace osu.Game.Tests.Editing
 {
     [HeadlessTest]
     public class TestSceneHitObjectComposerDistanceSnapping : EditorClockTestScene

osu.Game.Tests/Gameplay/TestSceneHitObjectSamples.cs

@@ -0,0 +1,346 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.IO.Stores;
+using osu.Framework.Testing;
+using osu.Framework.Timing;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.IO;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Skinning;
+using osu.Game.Storyboards;
+using osu.Game.Tests.Resources;
+using osu.Game.Tests.Visual;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Gameplay
+{
+    [HeadlessTest]
+    public class TestSceneHitObjectSamples : PlayerTestScene
+    {
+        private readonly SkinInfo userSkinInfo = new SkinInfo();
+
+        private readonly BeatmapInfo beatmapInfo = new BeatmapInfo
+        {
+            BeatmapSet = new BeatmapSetInfo(),
+            Metadata = new BeatmapMetadata
+            {
+                Author = User.SYSTEM_USER
+            }
+        };
+
+        private readonly TestResourceStore userSkinResourceStore = new TestResourceStore();
+        private readonly TestResourceStore beatmapSkinResourceStore = new TestResourceStore();
+
+        protected override bool HasCustomSteps => true;
+
+        public TestSceneHitObjectSamples()
+            : base(new OsuRuleset())
+        {
+        }
+
+        private SkinSourceDependencyContainer dependencies;
+
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+            => new DependencyContainer(dependencies = new SkinSourceDependencyContainer(base.CreateChildDependencies(parent)));
+
+        /// <summary>
+        /// Tests that a hitobject which provides no custom sample set retrieves samples from the user skin.
+        /// </summary>
+        [Test]
+        public void TestDefaultSampleFromUserSkin()
+        {
+            const string expected_sample = "normal-hitnormal";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("hitobject-skin-sample.osu");
+
+            assertUserLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject which provides a sample set of 1 retrieves samples from the beatmap skin.
+        /// </summary>
+        [Test]
+        public void TestDefaultSampleFromBeatmap()
+        {
+            const string expected_sample = "normal-hitnormal";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("hitobject-beatmap-sample.osu");
+
+            assertBeatmapLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject which provides a sample set of 1 retrieves samples from the user skin when the beatmap does not contain the sample.
+        /// </summary>
+        [Test]
+        public void TestDefaultSampleFromUserSkinFallback()
+        {
+            const string expected_sample = "normal-hitnormal";
+
+            setupSkins(null, expected_sample);
+
+            createTestWithBeatmap("hitobject-beatmap-sample.osu");
+
+            assertUserLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject which provides a custom sample set of 2 retrieves the following samples from the beatmap skin:
+        /// normal-hitnormal2
+        /// normal-hitnormal
+        /// </summary>
+        [TestCase("normal-hitnormal2")]
+        [TestCase("normal-hitnormal")]
+        public void TestDefaultCustomSampleFromBeatmap(string expectedSample)
+        {
+            setupSkins(expectedSample, expectedSample);
+
+            createTestWithBeatmap("hitobject-beatmap-custom-sample.osu");
+
+            assertBeatmapLookup(expectedSample);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject which provides a custom sample set of 2 retrieves the following samples from the user skin when the beatmap does not contain the sample:
+        /// normal-hitnormal2
+        /// normal-hitnormal
+        /// </summary>
+        [TestCase("normal-hitnormal2")]
+        [TestCase("normal-hitnormal")]
+        public void TestDefaultCustomSampleFromUserSkinFallback(string expectedSample)
+        {
+            setupSkins(string.Empty, expectedSample);
+
+            createTestWithBeatmap("hitobject-beatmap-custom-sample.osu");
+
+            assertUserLookup(expectedSample);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject which provides a sample file retrieves the sample file from the beatmap skin.
+        /// </summary>
+        [Test]
+        public void TestFileSampleFromBeatmap()
+        {
+            const string expected_sample = "hit_1.wav";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("file-beatmap-sample.osu");
+
+            assertBeatmapLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a default hitobject and control point causes <see cref="TestDefaultSampleFromUserSkin"/>.
+        /// </summary>
+        [Test]
+        public void TestControlPointSampleFromSkin()
+        {
+            const string expected_sample = "normal-hitnormal";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("controlpoint-skin-sample.osu");
+
+            assertUserLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a control point that provides a custom sample set of 1 causes <see cref="TestDefaultSampleFromBeatmap"/>.
+        /// </summary>
+        [Test]
+        public void TestControlPointSampleFromBeatmap()
+        {
+            const string expected_sample = "normal-hitnormal";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("controlpoint-beatmap-sample.osu");
+
+            assertBeatmapLookup(expected_sample);
+        }
+
+        /// <summary>
+        /// Tests that a control point that provides a custom sample of 2 causes <see cref="TestDefaultCustomSampleFromBeatmap"/>.
+        /// </summary>
+        [TestCase("normal-hitnormal2")]
+        [TestCase("normal-hitnormal")]
+        public void TestControlPointCustomSampleFromBeatmap(string sampleName)
+        {
+            setupSkins(sampleName, sampleName);
+
+            createTestWithBeatmap("controlpoint-beatmap-custom-sample.osu");
+
+            assertBeatmapLookup(sampleName);
+        }
+
+        /// <summary>
+        /// Tests that a hitobject's custom sample overrides the control point's.
+        /// </summary>
+        [Test]
+        public void TestHitObjectCustomSampleOverride()
+        {
+            const string expected_sample = "normal-hitnormal3";
+
+            setupSkins(expected_sample, expected_sample);
+
+            createTestWithBeatmap("hitobject-beatmap-custom-sample-override.osu");
+
+            assertBeatmapLookup(expected_sample);
+        }
+
+        protected override IBeatmap CreateBeatmap(RulesetInfo ruleset) => currentTestBeatmap;
+
+        protected override WorkingBeatmap CreateWorkingBeatmap(IBeatmap beatmap, Storyboard storyboard = null)
+            => new TestWorkingBeatmap(beatmapInfo, beatmapSkinResourceStore, beatmap, storyboard, Clock, Audio);
+
+        private IBeatmap currentTestBeatmap;
+
+        private void createTestWithBeatmap(string filename)
+        {
+            CreateTest(() =>
+            {
+                AddStep("clear performed lookups", () =>
+                {
+                    userSkinResourceStore.PerformedLookups.Clear();
+                    beatmapSkinResourceStore.PerformedLookups.Clear();
+                });
+
+                AddStep($"load {filename}", () =>
+                {
+                    using (var reader = new LineBufferedReader(TestResources.OpenResource($"SampleLookups/{filename}")))
+                        currentTestBeatmap = Decoder.GetDecoder<Beatmap>(reader).Decode(reader);
+                });
+            });
+        }
+
+        private void setupSkins(string beatmapFile, string userFile)
+        {
+            AddStep("setup skins", () =>
+            {
+                userSkinInfo.Files = new List<SkinFileInfo>
+                {
+                    new SkinFileInfo
+                    {
+                        Filename = userFile,
+                        FileInfo = new IO.FileInfo { Hash = userFile }
+                    }
+                };
+
+                beatmapInfo.BeatmapSet.Files = new List<BeatmapSetFileInfo>
+                {
+                    new BeatmapSetFileInfo
+                    {
+                        Filename = beatmapFile,
+                        FileInfo = new IO.FileInfo { Hash = beatmapFile }
+                    }
+                };
+
+                // Need to refresh the cached skin source to refresh the skin resource store.
+                dependencies.SkinSource = new SkinProvidingContainer(new LegacySkin(userSkinInfo, userSkinResourceStore, Audio));
+            });
+        }
+
+        private void assertBeatmapLookup(string name) => AddAssert($"\"{name}\" looked up from beatmap skin",
+            () => !userSkinResourceStore.PerformedLookups.Contains(name) && beatmapSkinResourceStore.PerformedLookups.Contains(name));
+
+        private void assertUserLookup(string name) => AddAssert($"\"{name}\" looked up from user skin",
+            () => !beatmapSkinResourceStore.PerformedLookups.Contains(name) && userSkinResourceStore.PerformedLookups.Contains(name));
+
+        private class SkinSourceDependencyContainer : IReadOnlyDependencyContainer
+        {
+            public ISkinSource SkinSource;
+
+            private readonly IReadOnlyDependencyContainer fallback;
+
+            public SkinSourceDependencyContainer(IReadOnlyDependencyContainer fallback)
+            {
+                this.fallback = fallback;
+            }
+
+            public object Get(Type type)
+            {
+                if (type == typeof(ISkinSource))
+                    return SkinSource;
+
+                return fallback.Get(type);
+            }
+
+            public object Get(Type type, CacheInfo info)
+            {
+                if (type == typeof(ISkinSource))
+                    return SkinSource;
+
+                return fallback.Get(type, info);
+            }
+
+            public void Inject<T>(T instance) where T : class
+            {
+                // Never used directly
+            }
+        }
+
+        private class TestResourceStore : IResourceStore<byte[]>
+        {
+            public readonly List<string> PerformedLookups = new List<string>();
+
+            public byte[] Get(string name)
+            {
+                markLookup(name);
+                return Array.Empty<byte>();
+            }
+
+            public Task<byte[]> GetAsync(string name)
+            {
+                markLookup(name);
+                return Task.FromResult(Array.Empty<byte>());
+            }
+
+            public Stream GetStream(string name)
+            {
+                markLookup(name);
+                return new MemoryStream();
+            }
+
+            private void markLookup(string name) => PerformedLookups.Add(name.Substring(name.LastIndexOf(Path.DirectorySeparatorChar) + 1));
+
+            public IEnumerable<string> GetAvailableResources() => Enumerable.Empty<string>();
+
+            public void Dispose()
+            {
+            }
+        }
+
+        private class TestWorkingBeatmap : ClockBackedTestWorkingBeatmap
+        {
+            private readonly BeatmapInfo skinBeatmapInfo;
+            private readonly IResourceStore<byte[]> resourceStore;
+
+            public TestWorkingBeatmap(BeatmapInfo skinBeatmapInfo, IResourceStore<byte[]> resourceStore, IBeatmap beatmap, Storyboard storyboard, IFrameBasedClock referenceClock, AudioManager audio,
+                                      double length = 60000)
+                : base(beatmap, storyboard, referenceClock, audio, length)
+            {
+                this.skinBeatmapInfo = skinBeatmapInfo;
+                this.resourceStore = resourceStore;
+            }
+
+            protected override ISkin GetSkin() => new LegacyBeatmapSkin(skinBeatmapInfo, resourceStore, AudioManager);
+        }
+    }
+}

osu.Game.Tests/NonVisual/ControlPointInfoTest.cs

@@ -29,11 +29,17 @@ namespace osu.Game.Tests.NonVisual
             var cpi = new ControlPointInfo();
 
             cpi.Add(0, new TimingControlPoint()); // is *not* redundant, special exception for first timing point.
-            cpi.Add(1000, new TimingControlPoint()); // is redundant
+            cpi.Add(1000, new TimingControlPoint()); // is also not redundant, due to change of offset
 
-            Assert.That(cpi.Groups.Count, Is.EqualTo(1));
-            Assert.That(cpi.TimingPoints.Count, Is.EqualTo(1));
-            Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(1));
+            Assert.That(cpi.Groups.Count, Is.EqualTo(2));
+            Assert.That(cpi.TimingPoints.Count, Is.EqualTo(2));
+            Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(2));
+
+            cpi.Add(1000, new TimingControlPoint()); //is redundant
+
+            Assert.That(cpi.Groups.Count, Is.EqualTo(2));
+            Assert.That(cpi.TimingPoints.Count, Is.EqualTo(2));
+            Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(2));
         }
 
         [Test]
@@ -86,11 +92,12 @@ namespace osu.Game.Tests.NonVisual
             Assert.That(cpi.EffectPoints.Count, Is.EqualTo(0));
             Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(0));
 
-            cpi.Add(1000, new EffectControlPoint { KiaiMode = true }); // is not redundant
+            cpi.Add(1000, new EffectControlPoint { KiaiMode = true, OmitFirstBarLine = true }); // is not redundant
+            cpi.Add(1400, new EffectControlPoint { KiaiMode = true, OmitFirstBarLine = true }); // same settings, but is not redundant
 
-            Assert.That(cpi.Groups.Count, Is.EqualTo(1));
-            Assert.That(cpi.EffectPoints.Count, Is.EqualTo(1));
-            Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(1));
+            Assert.That(cpi.Groups.Count, Is.EqualTo(2));
+            Assert.That(cpi.EffectPoints.Count, Is.EqualTo(2));
+            Assert.That(cpi.AllControlPoints.Count(), Is.EqualTo(2));
         }
 
         [Test]

osu.Game.Tests/Resources/SampleLookups/controlpoint-beatmap-custom-sample.osu

@@ -0,0 +1,7 @@
+osu file format v14
+
+[TimingPoints]
+0,300,4,0,2,100,1,0
+
+[HitObjects]
+444,320,1000,5,0,0:0:0:0:

osu.Game.Tests/Resources/SampleLookups/controlpoint-beatmap-sample.osu

@@ -0,0 +1,7 @@
+osu file format v14
+
+[TimingPoints]
+0,300,4,0,1,100,1,0
+
+[HitObjects]
+444,320,1000,5,0,0:0:0:0:

osu.Game.Tests/Resources/SampleLookups/controlpoint-skin-sample.osu

@@ -0,0 +1,7 @@
+osu file format v14
+
+[TimingPoints]
+0,300,4,0,0,100,1,0
+
+[HitObjects]
+444,320,1000,5,0,0:0:0:0:

osu.Game.Tests/Resources/SampleLookups/file-beatmap-sample.osu

@@ -0,0 +1,4 @@
+osu file format v14
+
+[HitObjects]
+255,193,2170,1,0,0:0:0:0:hit_1.wav

osu.Game.Tests/Resources/SampleLookups/hitobject-beatmap-custom-sample-override.osu

@@ -0,0 +1,7 @@
+osu file format v14
+
+[TimingPoints]
+0,300,4,0,2,100,1,0
+
+[HitObjects]
+444,320,1000,5,0,0:0:3:0:

osu.Game.Tests/Resources/SampleLookups/hitobject-beatmap-custom-sample.osu

@@ -0,0 +1,4 @@
+osu file format v14
+
+[HitObjects]
+444,320,1000,5,0,0:0:2:0:

osu.Game.Tests/Resources/SampleLookups/hitobject-beatmap-sample.osu

@@ -0,0 +1,4 @@
+osu file format v14
+
+[HitObjects]
+444,320,1000,5,0,0:0:1:0:

osu.Game.Tests/Resources/SampleLookups/hitobject-skin-sample.osu

@@ -0,0 +1,4 @@
+osu file format v14
+
+[HitObjects]
+444,320,1000,5,0,0:0:0:0: