Merge remote-tracking branch 'origin/open-downloaded-beatmas' into release

Fix hitobjects not properly expiring if scrolling in the editor

.vscode/launch.json

@@ -11,7 +11,11 @@
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build tests (Debug)",
-            "env": {},
+            "linux": {
+                "env": {
+                    "LD_LIBRARY_PATH": "${workspaceRoot}/osu.Game.Tests/bin/Debug/netcoreapp2.1:${env:LD_LIBRARY_PATH}"
+                }
+            },
             "console": "internalConsole"
         },
         {
@@ -24,7 +28,11 @@
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build tests (Release)",
-            "env": {},
+            "linux": {
+                "env": {
+                    "LD_LIBRARY_PATH": "${workspaceRoot}/osu.Game.Tests/bin/Release/netcoreapp2.1:${env:LD_LIBRARY_PATH}"
+                }
+            },
             "console": "internalConsole"
         },
         {
@@ -33,11 +41,15 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Debug/netcoreapp2.1/osu!.dll",
+                "${workspaceRoot}/osu.Desktop/bin/Debug/netcoreapp2.1/osu!.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build osu! (Debug)",
-            "env": {},
+            "linux": {
+                "env": {
+                    "LD_LIBRARY_PATH": "${workspaceRoot}/osu.Desktop/bin/Debug/netcoreapp2.1:${env:LD_LIBRARY_PATH}"
+                }
+            },
             "console": "internalConsole"
         },
         {
@@ -46,12 +58,16 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Release/netcoreapp2.1/osu!.dll",
+                "${workspaceRoot}/osu.Desktop/bin/Release/netcoreapp2.1/osu!.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build osu! (Release)",
-            "env": {},
+            "linux": {
+                "env": {
+                    "LD_LIBRARY_PATH": "${workspaceRoot}/osu.Desktop/bin/Release/netcoreapp2.1:${env:LD_LIBRARY_PATH}"
+                }
+            },
             "console": "internalConsole"
         }
     ]
-}
+}

README.md

@@ -1,18 +1,32 @@
 # osu! [![Build status](https://ci.appveyor.com/api/projects/status/u2p01nx7l6og8buh?svg=true)](https://ci.appveyor.com/project/peppy/osu)  [![CodeFactor](https://www.codefactor.io/repository/github/ppy/osu/badge)](https://www.codefactor.io/repository/github/ppy/osu) [![dev chat](https://discordapp.com/api/guilds/188630481301012481/widget.png?style=shield)](https://discord.gg/ppy)
 
-Rhythm is just a *click* away. The future of [osu!](https://osu.ppy.sh) and the beginning of an open era!
+Rhythm is just a *click* away. The future of [osu!](https://osu.ppy.sh) and the beginning of an open era! Commonly known by the codename "osu!lazer". Pew pew.
 
 # Status
 
-This is still heavily under development and is not intended for end-user use. This repository is intended for developer collaboration. You're welcome to try and use it but please do not submit bug reports without a patch. Please do not ask for help building or using this software.
+This project is still heavily under development, but is in a state where users are encouraged to try it out and keep it installed alongside the stable osu! client. It will continue to evolve over the coming months and hopefully bring some new unique features to the table.
+
+We are accepting bug reports (please report with as much detail as possible). Feature requests are welcome as long as you read and understand the contribution guidelines listed below.
 
 # Requirements
 
-- A desktop platform that can compile .NET 4.7.1. We recommend using [Visual Studio Community Edition](https://www.visualstudio.com/) (Windows), [Visual Studio for Mac](https://www.visualstudio.com/vs/visual-studio-mac/) (macOS) or [MonoDevelop](http://www.monodevelop.com/download/) (Linux), all of which are free. [Visual Studio Code](https://code.visualstudio.com/) may also be used but requires further setup steps which are not covered here.
+- A desktop platform with the [.NET Core SDK 2.1](https://www.microsoft.com/net/learn/get-started) or higher installed.
+- When working with the codebase, we recommend using an IDE with intellisense and syntax highlighting, such as [Visual Studio Community Edition](https://www.visualstudio.com/) (Windows), [Visual Studio Code](https://code.visualstudio.com/) (with the C# plugin installed) or [Jetbrains Rider](https://www.jetbrains.com/rider/) (commercial).
 
-# Getting Started
-- Clone the repository including submodules (`git clone --recurse-submodules https://github.com/ppy/osu`)
-- Build in your IDE of choice (recommended IDEs automatically restore nuget packages; if you are using an alternative make sure to `nuget restore`)
+# Building and running
+
+If you are not interested in developing the game, please head over to the [releases](https://github.com/ppy/osu/releases) to download a precompiled build with automatic updating enabled (download and run the install executable for your platform).
+
+Clone the repository including submodules
+
+`git clone --recurse-submodules https://github.com/ppy/osu`
+
+Build and run
+
+- Using Visual Studio 2017, Rider or Visual Studio Code (configurations are included)
+- From command line using `dotnet run --project osu.Desktop --framework netcoreapp2.1`
+
+If you run into issues building you may need to restore nuget packages (commonly via `dotnet restore`). Visual Studio Code users must run `Restore` task from debug tab before attempt to build.
 
 # Contributing
 

appveyor.yml

@@ -2,6 +2,9 @@ clone_depth: 1
 version: '{branch}-{build}'
 image: Visual Studio 2017
 configuration: Debug
+cache:
+  - C:\ProgramData\chocolatey\bin -> appveyor.yml
+  - C:\ProgramData\chocolatey\lib -> appveyor.yml
 install:
   - cmd: git submodule update --init --recursive --depth=5
   - cmd: choco install resharper-clt -y
@@ -18,4 +21,4 @@ build:
   verbosity: minimal
 after_build:
   - cmd: inspectcode --o="inspectcodereport.xml" --projects:osu.Game* --caches-home="inspectcode" osu.sln > NUL
-  - cmd: NVika parsereport "inspectcodereport.xml" --treatwarningsaserrors
+  - cmd: NVika parsereport "inspectcodereport.xml" --treatwarningsaserrors

osu.Desktop/OsuGameDesktop.cs

@@ -12,6 +12,7 @@ using osu.Framework.Platform;
 using osu.Game;
 using OpenTK.Input;
 using Microsoft.Win32;
+using osu.Desktop.Updater;
 using osu.Framework.Platform.Windows;
 
 namespace osu.Desktop
@@ -38,6 +39,52 @@ namespace osu.Desktop
             }
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            if (!noVersionOverlay)
+            {
+                LoadComponentAsync(new VersionManager { Depth = int.MinValue }, v =>
+                {
+                    Add(v);
+                    v.State = Visibility.Visible;
+                });
+
+#if NET_FRAMEWORK
+                Add(new SquirrelUpdateManager());
+#else
+                Add(new SimpleUpdateManager());
+#endif
+            }
+        }
+
+        public override void SetHost(GameHost host)
+        {
+            base.SetHost(host);
+            var desktopWindow = host.Window as DesktopGameWindow;
+            if (desktopWindow != null)
+            {
+                desktopWindow.CursorState |= CursorState.Hidden;
+
+                desktopWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
+                desktopWindow.Title = Name;
+
+                desktopWindow.FileDrop += fileDrop;
+            }
+        }
+
+        private void fileDrop(object sender, FileDropEventArgs e)
+        {
+            var filePaths = new[] { e.FileName };
+
+            var firstExtension = Path.GetExtension(filePaths.First());
+
+            if (filePaths.Any(f => Path.GetExtension(f) != firstExtension)) return;
+
+            Task.Factory.StartNew(() => Import(filePaths), TaskCreationOptions.LongRunning);
+        }
+
         /// <summary>
         /// A method of accessing an osu-stable install in a controlled fashion.
         /// </summary>
@@ -77,45 +124,5 @@ namespace osu.Desktop
             {
             }
         }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            if (!noVersionOverlay)
-            {
-                LoadComponentAsync(new VersionManager { Depth = int.MinValue }, v =>
-                {
-                    Add(v);
-                    v.State = Visibility.Visible;
-                });
-            }
-        }
-
-        public override void SetHost(GameHost host)
-        {
-            base.SetHost(host);
-            var desktopWindow = host.Window as DesktopGameWindow;
-            if (desktopWindow != null)
-            {
-                desktopWindow.CursorState |= CursorState.Hidden;
-
-                desktopWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
-                desktopWindow.Title = Name;
-
-                desktopWindow.FileDrop += fileDrop;
-            }
-        }
-
-        private void fileDrop(object sender, FileDropEventArgs e)
-        {
-            var filePaths = new[] { e.FileName };
-
-            var firstExtension = Path.GetExtension(filePaths.First());
-
-            if (filePaths.Any(f => Path.GetExtension(f) != firstExtension)) return;
-
-            Task.Factory.StartNew(() => Import(filePaths), TaskCreationOptions.LongRunning);
-        }
     }
 }

osu.Desktop/Overlays/VersionManager.cs

@@ -91,10 +91,6 @@ namespace osu.Desktop.Overlays
                     }
                 }
             };
-
-#if NET_FRAMEWORK
-            Add(new SquirrelUpdateManager());
-#endif
         }
 
         protected override void LoadComplete()

osu.Desktop/Program.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using osu.Framework;
 using osu.Framework.Platform;
 using osu.Game.IPC;
+
 #if NET_FRAMEWORK
 using System.Runtime;
 #endif
@@ -18,10 +19,7 @@ namespace osu.Desktop
         [STAThread]
         public static int Main(string[] args)
         {
-            // required to initialise native SQLite libraries on some platforms.
-
-            if (!RuntimeInfo.IsMono)
-                useMulticoreJit();
+            useMultiCoreJit();
 
             // Back up the cwd before DesktopGameHost changes it
             var cwd = Environment.CurrentDirectory;
@@ -54,7 +52,7 @@ namespace osu.Desktop
             }
         }
 
-        private static void useMulticoreJit()
+        private static void useMultiCoreJit()
         {
 #if NET_FRAMEWORK
             var directory = Directory.CreateDirectory(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Profiles"));

osu.Desktop/Updater/SimpleUpdateManager.cs

@@ -0,0 +1,103 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using osu.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.IO.Network;
+using osu.Framework.Platform;
+using osu.Game;
+using osu.Game.Graphics;
+using osu.Game.Overlays;
+using osu.Game.Overlays.Notifications;
+
+namespace osu.Desktop.Updater
+{
+    /// <summary>
+    /// An update manager that shows notifications if a newer release is detected.
+    /// Installation is left up to the user.
+    /// </summary>
+    internal class SimpleUpdateManager : CompositeDrawable
+    {
+        private NotificationOverlay notificationOverlay;
+        private string version;
+        private GameHost host;
+
+        [BackgroundDependencyLoader]
+        private void load(NotificationOverlay notification, OsuGameBase game, GameHost host)
+        {
+            notificationOverlay = notification;
+
+            this.host = host;
+            version = game.Version;
+
+            if (game.IsDeployedBuild)
+                Schedule(() => Task.Run(() => checkForUpdateAsync()));
+        }
+
+        private async void checkForUpdateAsync()
+        {
+            var releases = new JsonWebRequest<GitHubRelease>("https://api.github.com/repos/ppy/osu/releases/latest");
+            await releases.PerformAsync();
+
+            var latest = releases.ResponseObject;
+
+            if (latest.TagName != version)
+            {
+                notificationOverlay.Post(new SimpleNotification
+                {
+                    Text = $"A newer release of osu! has been found ({version} → {latest.TagName}).\n\n"
+                           + "Click here to download the new version, which can be installed over the top of your existing installation",
+                    Icon = FontAwesome.fa_upload,
+                    Activated = () =>
+                    {
+                        host.OpenUrlExternally(getBestUrl(latest));
+                        return true;
+                    }
+                });
+            }
+        }
+
+        private string getBestUrl(GitHubRelease release)
+        {
+            GitHubAsset bestAsset = null;
+
+            switch (RuntimeInfo.OS)
+            {
+                case RuntimeInfo.Platform.Windows:
+                    bestAsset = release.Assets?.FirstOrDefault(f => f.Name.EndsWith(".exe"));
+                    break;
+                case RuntimeInfo.Platform.MacOsx:
+                    bestAsset = release.Assets?.FirstOrDefault(f => f.Name.EndsWith(".app.zip"));
+                    break;
+            }
+
+            return bestAsset?.BrowserDownloadUrl ?? release.HtmlUrl;
+        }
+
+        public class GitHubRelease
+        {
+            [JsonProperty("html_url")]
+            public string HtmlUrl { get; set; }
+
+            [JsonProperty("tag_name")]
+            public string TagName { get; set; }
+
+            [JsonProperty("assets")]
+            public List<GitHubAsset> Assets { get; set; }
+        }
+
+        public class GitHubAsset
+        {
+            [JsonProperty("name")]
+            public string Name { get; set; }
+
+            [JsonProperty("browser_download_url")]
+            public string BrowserDownloadUrl { get; set; }
+        }
+    }
+}

osu.Desktop/Updater/SquirrelUpdateManager.cs

@@ -3,6 +3,7 @@
 
 #if NET_FRAMEWORK
 using System;
+using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -16,7 +17,7 @@ using OpenTK;
 using OpenTK.Graphics;
 using Squirrel;
 
-namespace osu.Desktop.Overlays
+namespace osu.Desktop.Updater
 {
     public class SquirrelUpdateManager : Component
     {
@@ -35,7 +36,7 @@ namespace osu.Desktop.Overlays
             notificationOverlay = notification;
 
             if (game.IsDeployedBuild)
-                Schedule(() => checkForUpdateAsync());
+                Schedule(() => Task.Run(() => checkForUpdateAsync()));
         }
 
         private async void checkForUpdateAsync(bool useDeltaPatching = true, UpdateProgressNotification notification = null)

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

@@ -28,18 +28,20 @@ namespace osu.Game.Rulesets.Catch.Tests
 
         protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)
         {
-            if (hitObject is JuiceStream stream)
+            switch (hitObject)
             {
-                foreach (var nested in stream.NestedHitObjects)
-                    yield return new ConvertValue((CatchHitObject)nested);
+                case JuiceStream stream:
+                    foreach (var nested in stream.NestedHitObjects)
+                        yield return new ConvertValue((CatchHitObject)nested);
+                    break;
+                case BananaShower shower:
+                    foreach (var nested in shower.NestedHitObjects)
+                        yield return new ConvertValue((CatchHitObject)nested);
+                    break;
+                default:
+                    yield return new ConvertValue((CatchHitObject)hitObject);
+                    break;
             }
-            else if (hitObject is BananaShower shower)
-            {
-                foreach (var nested in shower.NestedHitObjects)
-                    yield return new ConvertValue((CatchHitObject)nested);
-            }
-            else
-                yield return new ConvertValue((CatchHitObject)hitObject);
         }
 
         protected override Ruleset CreateRuleset() => new CatchRuleset();

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

@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Catch.Tests
             {
             }
 
-            public void ToggleHyperDash(bool status) => MovableCatcher.SetHyperdashState(status ? 2 : 1);
+            public void ToggleHyperDash(bool status) => MovableCatcher.SetHyperDashState(status ? 2 : 1);
         }
     }
 }

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

@@ -8,9 +8,9 @@ using osu.Game.Rulesets.Catch.Objects;
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
-    public class TestCaseHyperdash : Game.Tests.Visual.TestCasePlayer
+    public class TestCaseHyperDash : Game.Tests.Visual.TestCasePlayer
     {
-        public TestCaseHyperdash()
+        public TestCaseHyperDash()
             : base(new CatchRuleset())
         {
         }

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

@@ -15,6 +15,8 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 {
     public class CatchBeatmapProcessor : BeatmapProcessor
     {
+        public const int RNG_SEED = 1337;
+
         public CatchBeatmapProcessor(IBeatmap beatmap)
             : base(beatmap)
         {
@@ -22,12 +24,12 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
         public override void PostProcess()
         {
+            base.PostProcess();
+
             applyPositionOffsets();
 
             initialiseHyperDash((List<CatchHitObject>)Beatmap.HitObjects);
 
-            base.PostProcess();
-
             int index = 0;
             foreach (var obj in Beatmap.HitObjects.OfType<CatchHitObject>())
             {
@@ -37,8 +39,6 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
             }
         }
 
-        public const int RNG_SEED = 1337;
-
         private void applyPositionOffsets()
         {
             var rng = new FastRandom(RNG_SEED);

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

@@ -46,13 +46,16 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 
             foreach (var hitObject in beatmap.HitObjects)
             {
-                // We want to only consider fruits that contribute to the combo. Droplets are addressed as accuracy and spinners are not relevant for "skill" calculations.
-                if (hitObject is Fruit)
+                switch (hitObject)
                 {
-                    difficultyHitObjects.Add(new CatchDifficultyHitObject((CatchHitObject)hitObject, halfCatchWidth));
+                    // We want to only consider fruits that contribute to the combo. Droplets are addressed as accuracy and spinners are not relevant for "skill" calculations.
+                    case Fruit fruit:
+                        difficultyHitObjects.Add(new CatchDifficultyHitObject(fruit, halfCatchWidth));
+                        break;
+                    case JuiceStream _:
+                        difficultyHitObjects.AddRange(hitObject.NestedHitObjects.OfType<CatchHitObject>().Where(o => !(o is TinyDroplet)).Select(o => new CatchDifficultyHitObject(o, halfCatchWidth)));
+                        break;
                 }
-                if (hitObject is JuiceStream)
-                    difficultyHitObjects.AddRange(hitObject.NestedHitObjects.OfType<CatchHitObject>().Where(o => !(o is TinyDroplet)).Select(o => new CatchDifficultyHitObject(o, halfCatchWidth)));
             }
 
             difficultyHitObjects.Sort((a, b) => a.BaseHitObject.StartTime.CompareTo(b.BaseHitObject.StartTime));
@@ -61,12 +64,12 @@ namespace osu.Game.Rulesets.Catch.Difficulty
                 return new CatchDifficultyAttributes(mods, 0);
 
             // this is the same as osu!, so there's potential to share the implementation... maybe
-            double preEmpt = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
+            double preempt = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
             double starRating = Math.Sqrt(calculateDifficulty(difficultyHitObjects, timeRate)) * star_scaling_factor;
 
             return new CatchDifficultyAttributes(mods, starRating)
             {
-                ApproachRate = preEmpt > 1200.0 ? -(preEmpt - 1800.0) / 120.0 : -(preEmpt - 1200.0) / 150.0 + 5.0,
+                ApproachRate = preempt > 1200.0 ? -(preempt - 1800.0) / 120.0 : -(preempt - 1200.0) / 150.0 + 5.0,
                 MaxCombo = difficultyHitObjects.Count
             };
         }

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

@@ -2,7 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System.Collections.Generic;
-using osu.Framework.Input;
+using osu.Framework.Input.StateChanges;
 using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Replays;
 

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

@@ -23,8 +23,10 @@ namespace osu.Game.Rulesets.Catch.UI
         private readonly CatcherArea catcherArea;
 
         public CatchPlayfield(BeatmapDifficulty difficulty, Func<CatchHitObject, DrawableHitObject<CatchHitObject>> getVisualRepresentation)
-            : base(ScrollingDirection.Down, BASE_WIDTH)
+            : base(BASE_WIDTH)
         {
+            Direction.Value = ScrollingDirection.Down;
+
             Container explodingFruitContainer;
 
             Anchor = Anchor.TopCentre;

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

@@ -52,6 +52,9 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             void runAfterLoaded(Action action)
             {
+                if (lastPlateableFruit == null)
+                    return;
+
                 // this is required to make this run after the last caught fruit runs UpdateState at least once.
                 // TODO: find a better alternative
                 if (lastPlateableFruit.IsLoaded)
@@ -255,11 +258,11 @@ namespace osu.Game.Rulesets.Catch.UI
                     double positionDifference = target.X * CatchPlayfield.BASE_WIDTH - catcherPosition;
                     double velocity = positionDifference / Math.Max(1.0, timeDifference - 1000.0 / 60.0);
 
-                    SetHyperdashState(Math.Abs(velocity), target.X);
+                    SetHyperDashState(Math.Abs(velocity), target.X);
                 }
                 else
                 {
-                    SetHyperdashState();
+                    SetHyperDashState();
                 }
 
                 return validCatch;
@@ -270,18 +273,18 @@ namespace osu.Game.Rulesets.Catch.UI
             private float hyperDashTargetPosition;
 
             /// <summary>
-            /// Whether we are hypderdashing or not.
+            /// Whether we are hyper-dashing or not.
             /// </summary>
             public bool HyperDashing => hyperDashModifier != 1;
 
             /// <summary>
-            /// Set hyperdash state.
+            /// Set hyper-dash state.
             /// </summary>
-            /// <param name="modifier">The speed multiplier. If this is less or equals to 1, this catcher will be non-hyperdashing state.</param>
-            /// <param name="targetPosition">When this catcher crosses this position, this catcher ends hyperdashing.</param>
-            public void SetHyperdashState(double modifier = 1, float targetPosition = -1)
+            /// <param name="modifier">The speed multiplier. If this is less or equals to 1, this catcher will be non-hyper-dashing state.</param>
+            /// <param name="targetPosition">When this catcher crosses this position, this catcher ends hyper-dashing.</param>
+            public void SetHyperDashState(double modifier = 1, float targetPosition = -1)
             {
-                const float hyperdash_transition_length = 180;
+                const float hyper_dash_transition_length = 180;
 
                 bool previouslyHyperDashing = HyperDashing;
                 if (modifier <= 1 || X == targetPosition)
@@ -291,8 +294,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
                     if (previouslyHyperDashing)
                     {
-                        this.FadeColour(Color4.White, hyperdash_transition_length, Easing.OutQuint);
-                        this.FadeTo(1, hyperdash_transition_length, Easing.OutQuint);
+                        this.FadeColour(Color4.White, hyper_dash_transition_length, Easing.OutQuint);
+                        this.FadeTo(1, hyper_dash_transition_length, Easing.OutQuint);
                     }
                 }
                 else
@@ -303,8 +306,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
                     if (!previouslyHyperDashing)
                     {
-                        this.FadeColour(Color4.OrangeRed, hyperdash_transition_length, Easing.OutQuint);
-                        this.FadeTo(0.2f, hyperdash_transition_length, Easing.OutQuint);
+                        this.FadeColour(Color4.OrangeRed, hyper_dash_transition_length, Easing.OutQuint);
+                        this.FadeTo(0.2f, hyper_dash_transition_length, Easing.OutQuint);
                         Trail = true;
                     }
                 }
@@ -370,7 +373,7 @@ namespace osu.Game.Rulesets.Catch.UI
                     hyperDashDirection < 0 && hyperDashTargetPosition > X)
                 {
                     X = hyperDashTargetPosition;
-                    SetHyperdashState();
+                    SetHyperDashState();
                 }
             }
 

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

@@ -5,6 +5,8 @@ using System;
 using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.MathUtils;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
@@ -13,11 +15,10 @@ using osu.Game.Tests.Beatmaps;
 namespace osu.Game.Rulesets.Mania.Tests
 {
     [TestFixture]
-    public class ManiaBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
+    public class ManiaBeatmapConversionTest : BeatmapConversionTest<ManiaConvertMapping, ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
-        [NonParallelizable]
         [TestCase("basic")]
         public new void Test(string name)
         {
@@ -34,9 +35,35 @@ namespace osu.Game.Rulesets.Mania.Tests
             };
         }
 
+        protected override ManiaConvertMapping CreateConvertMapping() => new ManiaConvertMapping(Converter);
+
         protected override Ruleset CreateRuleset() => new ManiaRuleset();
     }
 
+     public class ManiaConvertMapping : ConvertMapping<ConvertValue>, IEquatable<ManiaConvertMapping>
+     {
+         public uint RandomW;
+         public uint RandomX;
+         public uint RandomY;
+         public uint RandomZ;
+
+         public ManiaConvertMapping()
+         {
+         }
+
+         public ManiaConvertMapping(IBeatmapConverter converter)
+         {
+             var maniaConverter = (ManiaBeatmapConverter)converter;
+             RandomW = maniaConverter.Random.W;
+             RandomX = maniaConverter.Random.X;
+             RandomY = maniaConverter.Random.Y;
+             RandomZ = maniaConverter.Random.Z;
+         }
+
+         public bool Equals(ManiaConvertMapping other) => other != null && RandomW == other.RandomW && RandomX == other.RandomX && RandomY == other.RandomY && RandomZ == other.RandomZ;
+         public override bool Equals(ConvertMapping<ConvertValue> other) => base.Equals(other) && Equals(other as ManiaConvertMapping);
+     }
+
     public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>

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

@@ -21,9 +21,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             this.direction = direction;
         }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IScrollingInfo>(new ScrollingInfo { Direction = { Value = direction }});
             return dependencies;
         }

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

@@ -69,7 +69,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
                 obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                columns[i].Add(new DrawableNote(obj, columns[i].Action));
+                columns[i].Add(new DrawableNote(obj));
             }
         }
 
@@ -80,19 +80,19 @@ namespace osu.Game.Rulesets.Mania.Tests
                 var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
                 obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                columns[i].Add(new DrawableHoldNote(obj, columns[i].Action));
+                columns[i].Add(new DrawableHoldNote(obj));
             }
         }
 
         private Drawable createColumn(ScrollingDirection direction, ManiaAction action)
         {
-            var column = new Column(direction)
+            var column = new Column
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Height = 0.85f,
                 AccentColour = Color4.OrangeRed,
-                Action = action,
+                Action = { Value = action },
                 VisibleTimeRange = { Value = 2000 }
             };
 

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

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -61,9 +62,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             return new ScrollingTestContainer(direction)
             {
                 AutoSizeAxes = Axes.Both,
-                Child = new NoteContainer(direction, $"note, scrolling {direction.ToString().ToLower()}")
+                Child = new NoteContainer(direction, $"note, scrolling {direction.ToString().ToLowerInvariant()}")
                 {
-                    Child = new DrawableNote(note, ManiaAction.Key1) { AccentColour = Color4.OrangeRed }
+                    Child = new DrawableNote(note) { AccentColour = Color4.OrangeRed }
                 }
             };
         }
@@ -76,9 +77,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             return new ScrollingTestContainer(direction)
             {
                 AutoSizeAxes = Axes.Both,
-                Child = new NoteContainer(direction, $"hold note, scrolling {direction.ToString().ToLower()}")
+                Child = new NoteContainer(direction, $"hold note, scrolling {direction.ToString().ToLowerInvariant()}")
                 {
-                    Child = new DrawableHoldNote(note, ManiaAction.Key1)
+                    Child = new DrawableHoldNote(note)
                     {
                         RelativeSizeAxes = Axes.Both,
                         AccentColour = Color4.OrangeRed,
@@ -136,6 +137,13 @@ namespace osu.Game.Rulesets.Mania.Tests
                 };
             }
 
+            protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+            {
+                var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
+                dependencies.CacheAs<IBindable<ManiaAction>>(new Bindable<ManiaAction>());
+                return dependencies;
+            }
+
             protected override void Update()
             {
                 base.Update();
@@ -145,9 +153,6 @@ namespace osu.Game.Rulesets.Mania.Tests
                     if (!(obj.HitObject is IHasEndTime endTime))
                         continue;
 
-                    if (!obj.HasNestedHitObjects)
-                        continue;
-
                     foreach (var nested in obj.NestedHitObjects)
                     {
                         double finalPosition = (nested.HitObject.StartTime - obj.HitObject.StartTime) / endTime.Duration;

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

@@ -65,7 +65,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
                     obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                    stage.Add(new DrawableNote(obj, stage.Columns[i].Action));
+                    stage.Add(new DrawableNote(obj));
                 }
             }
         }
@@ -79,7 +79,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
                     obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                    stage.Add(new DrawableHoldNote(obj, stage.Columns[i].Action));
+                    stage.Add(new DrawableHoldNote(obj));
                 }
             }
         }
@@ -105,7 +105,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         {
             var specialAction = ManiaAction.Special1;
 
-            var stage = new ManiaStage(direction, 0, new StageDefinition { Columns = 2 }, ref action, ref specialAction) { VisibleTimeRange = { Value = 2000 } };
+            var stage = new ManiaStage(0, new StageDefinition { Columns = 2 }, ref action, ref specialAction) { VisibleTimeRange = { Value = 2000 } };
             stages.Add(stage);
 
             return new ScrollingTestContainer(direction)

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

@@ -5,6 +5,7 @@ using osu.Game.Rulesets.Mania.Objects;
 using System;
 using System.Linq;
 using System.Collections.Generic;
+using osu.Framework.MathUtils;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
@@ -28,8 +29,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         public int TargetColumns;
         public readonly bool IsForCurrentRuleset;
 
+        // Internal for testing purposes
+        internal FastRandom Random { get; private set; }
+
         private Pattern lastPattern = new Pattern();
-        private FastRandom random;
 
         private ManiaBeatmap beatmap;
 
@@ -62,7 +65,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             BeatmapDifficulty difficulty = original.BeatmapInfo.BaseDifficulty;
 
             int seed = (int)Math.Round(difficulty.DrainRate + difficulty.CircleSize) * 20 + (int)(difficulty.OverallDifficulty * 41.2) + (int)Math.Round(difficulty.ApproachRate);
-            random = new FastRandom(seed);
+            Random = new FastRandom(seed);
 
             return base.ConvertBeatmap(original);
         }
@@ -100,7 +103,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
         private double lastTime;
         private Vector2 lastPosition;
-        private PatternType lastStair;
+        private PatternType lastStair = PatternType.Stair;
         private void recordNote(double time, Vector2 position)
         {
             lastTime = time;
@@ -115,12 +118,15 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         /// <returns>The hit objects generated.</returns>
         private IEnumerable<ManiaHitObject> generateSpecific(HitObject original, IBeatmap originalBeatmap)
         {
-            var generator = new SpecificBeatmapPatternGenerator(random, original, beatmap, lastPattern, originalBeatmap);
+            var generator = new SpecificBeatmapPatternGenerator(Random, original, beatmap, lastPattern, originalBeatmap);
 
-            Pattern newPattern = generator.Generate();
-            lastPattern = newPattern;
+            foreach (var newPattern in generator.Generate())
+            {
+                lastPattern = newPattern;
 
-            return newPattern.HitObjects;
+                foreach (var obj in newPattern.HitObjects)
+                    yield return obj;
+            }
         }
 
         /// <summary>
@@ -138,27 +144,44 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             Patterns.PatternGenerator conversion = null;
 
             if (distanceData != null)
-                conversion = new DistanceObjectPatternGenerator(random, original, beatmap, lastPattern, originalBeatmap);
+            {
+                var generator = new DistanceObjectPatternGenerator(Random, original, beatmap, lastPattern, originalBeatmap);
+                conversion = generator;
+
+                for (double time = original.StartTime; !Precision.DefinitelyBigger(time, generator.EndTime); time += generator.SegmentDuration)
+                {
+                    recordNote(time, positionData?.Position ?? Vector2.Zero);
+                    computeDensity(time);
+                }
+            }
             else if (endTimeData != null)
-                conversion = new EndTimeObjectPatternGenerator(random, original, beatmap, originalBeatmap);
+            {
+                conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, originalBeatmap);
+
+                recordNote(endTimeData.EndTime, new Vector2(256, 192));
+                computeDensity(endTimeData.EndTime);
+            }
             else if (positionData != null)
             {
                 computeDensity(original.StartTime);
 
-                conversion = new HitObjectPatternGenerator(random, original, beatmap, lastPattern, lastTime, lastPosition, density, lastStair, originalBeatmap);
+                conversion = new HitObjectPatternGenerator(Random, original, beatmap, lastPattern, lastTime, lastPosition, density, lastStair, originalBeatmap);
 
                 recordNote(original.StartTime, positionData.Position);
             }
 
             if (conversion == null)
-                return null;
+                yield break;
 
-            Pattern newPattern = conversion.Generate();
+            foreach (var newPattern in conversion.Generate())
+            {
+                lastPattern = conversion is EndTimeObjectPatternGenerator ? lastPattern : newPattern;
+                lastStair = (conversion as HitObjectPatternGenerator)?.StairType ?? lastStair;
 
-            lastPattern = conversion is EndTimeObjectPatternGenerator ? lastPattern : newPattern;
-            lastStair = (conversion as HitObjectPatternGenerator)?.StairType ?? lastStair;
+                foreach (var obj in newPattern.HitObjects)
+                    yield return obj;
 
-            return newPattern.HitObjects;
+            }
         }
 
         /// <summary>
@@ -171,7 +194,12 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             {
             }
 
-            public override Pattern Generate()
+            public override IEnumerable<Pattern> Generate()
+            {
+                yield return generate();
+            }
+
+            private Pattern generate()
             {
                 var endTimeData = HitObject as IHasEndTime;
                 var positionData = HitObject as IHasXPosition;

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

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.MathUtils;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.MathUtils;
@@ -24,8 +25,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         private const float osu_base_scoring_distance = 100;
 
-        private readonly double endTime;
-        private readonly double segmentDuration;
+        public readonly double EndTime;
+        public readonly double SegmentDuration;
+
         private readonly int spanCount;
 
         private PatternType convertType;
@@ -52,77 +54,105 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             // The duration of the osu! hit object
             double osuDuration = distance / osuVelocity;
 
-            endTime = hitObject.StartTime + osuDuration;
-            segmentDuration = (endTime - HitObject.StartTime) / spanCount;
+            EndTime = hitObject.StartTime + osuDuration;
+            SegmentDuration = (EndTime - HitObject.StartTime) / spanCount;
         }
 
-        public override Pattern Generate()
+        public override IEnumerable<Pattern> Generate()
+        {
+            var originalPattern = generate();
+
+            if (originalPattern.HitObjects.Count() == 1)
+            {
+                yield return originalPattern;
+                yield break;
+            }
+
+            // We need to split the intermediate pattern into two new patterns:
+            // 1. A pattern containing all objects that do not end at our EndTime.
+            // 2. A pattern containing all objects that end at our EndTime. This will be used for further pattern generation.
+            var intermediatePattern = new Pattern();
+            var endTimePattern = new Pattern();
+
+            foreach (var obj in originalPattern.HitObjects)
+            {
+                if (!Precision.AlmostEquals(EndTime, (obj as IHasEndTime)?.EndTime ?? obj.StartTime))
+                    intermediatePattern.Add(obj);
+                else
+                    endTimePattern.Add(obj);
+            }
+
+            yield return intermediatePattern;
+            yield return endTimePattern;
+        }
+
+        private Pattern generate()
         {
             if (TotalColumns == 1)
             {
                 var pattern = new Pattern();
-                addToPattern(pattern, 0, HitObject.StartTime, endTime);
+                addToPattern(pattern, 0, HitObject.StartTime, EndTime);
                 return pattern;
             }
 
             if (spanCount > 1)
             {
-                if (segmentDuration <= 90)
+                if (SegmentDuration <= 90)
                     return generateRandomHoldNotes(HitObject.StartTime, 1);
 
-                if (segmentDuration <= 120)
+                if (SegmentDuration <= 120)
                 {
                     convertType |= PatternType.ForceNotStack;
                     return generateRandomNotes(HitObject.StartTime, spanCount + 1);
                 }
 
-                if (segmentDuration <= 160)
+                if (SegmentDuration <= 160)
                     return generateStair(HitObject.StartTime);
 
-                if (segmentDuration <= 200 && ConversionDifficulty > 3)
+                if (SegmentDuration <= 200 && ConversionDifficulty > 3)
                     return generateRandomMultipleNotes(HitObject.StartTime);
 
-                double duration = endTime - HitObject.StartTime;
+                double duration = EndTime - HitObject.StartTime;
                 if (duration >= 4000)
                     return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
 
-                if (segmentDuration > 400 && spanCount < TotalColumns - 1 - RandomStart)
+                if (SegmentDuration > 400 && spanCount < TotalColumns - 1 - RandomStart)
                     return generateTiledHoldNotes(HitObject.StartTime);
 
                 return generateHoldAndNormalNotes(HitObject.StartTime);
             }
 
-            if (segmentDuration <= 110)
+            if (SegmentDuration <= 110)
             {
                 if (PreviousPattern.ColumnWithObjects < TotalColumns)
                     convertType |= PatternType.ForceNotStack;
                 else
                     convertType &= ~PatternType.ForceNotStack;
-                return generateRandomNotes(HitObject.StartTime, segmentDuration < 80 ? 1 : 2);
+                return generateRandomNotes(HitObject.StartTime, SegmentDuration < 80 ? 1 : 2);
             }
 
             if (ConversionDifficulty > 6.5)
             {
-                if ((convertType & PatternType.LowProbability) > 0)
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(HitObject.StartTime, 0.78, 0.3, 0);
                 return generateNRandomNotes(HitObject.StartTime, 0.85, 0.36, 0.03);
             }
 
             if (ConversionDifficulty > 4)
             {
-                if ((convertType & PatternType.LowProbability) > 0)
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(HitObject.StartTime, 0.43, 0.08, 0);
                 return generateNRandomNotes(HitObject.StartTime, 0.56, 0.18, 0);
             }
 
             if (ConversionDifficulty > 2.5)
             {
-                if ((convertType & PatternType.LowProbability) > 0)
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(HitObject.StartTime, 0.3, 0, 0);
                 return generateNRandomNotes(HitObject.StartTime, 0.37, 0.08, 0);
             }
 
-            if ((convertType & PatternType.LowProbability) > 0)
+            if (convertType.HasFlag(PatternType.LowProbability))
                 return generateNRandomNotes(HitObject.StartTime, 0.17, 0, 0);
             return generateNRandomNotes(HitObject.StartTime, 0.27, 0, 0);
         }
@@ -148,7 +178,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             {
                 while (pattern.ColumnHasObject(nextColumn) || PreviousPattern.ColumnHasObject(nextColumn))  //find available column
                     nextColumn = Random.Next(RandomStart, TotalColumns);
-                addToPattern(pattern, nextColumn, startTime, endTime);
+                addToPattern(pattern, nextColumn, startTime, EndTime);
             }
 
             // This is can't be combined with the above loop due to RNG
@@ -156,7 +186,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             {
                 while (pattern.ColumnHasObject(nextColumn))
                     nextColumn = Random.Next(RandomStart, TotalColumns);
-                addToPattern(pattern, nextColumn, startTime, endTime);
+                addToPattern(pattern, nextColumn, startTime, EndTime);
             }
 
             return pattern;
@@ -179,7 +209,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var pattern = new Pattern();
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
             {
                 while (PreviousPattern.ColumnHasObject(nextColumn))
                     nextColumn = Random.Next(RandomStart, TotalColumns);
@@ -193,7 +223,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     nextColumn = Random.Next(RandomStart, TotalColumns);
 
                 lastColumn = nextColumn;
-                startTime += segmentDuration;
+                startTime += SegmentDuration;
             }
 
             return pattern;
@@ -223,7 +253,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             for (int i = 0; i <= spanCount; i++)
             {
                 addToPattern(pattern, column, startTime, startTime);
-                startTime += segmentDuration;
+                startTime += SegmentDuration;
 
                 // Check if we're at the borders of the stage, and invert the pattern if so
                 if (increasing)
@@ -284,7 +314,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     addToPattern(pattern, nextColumn, startTime, startTime);
 
                 nextColumn = Random.Next(RandomStart, TotalColumns);
-                startTime += segmentDuration;
+                startTime += SegmentDuration;
             }
 
             return pattern;
@@ -331,7 +361,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             bool isDoubleSample(SampleInfo sample) => sample.Name == SampleInfo.HIT_CLAP || sample.Name == SampleInfo.HIT_FINISH;
 
-            bool canGenerateTwoNotes = (convertType & PatternType.LowProbability) == 0;
+            bool canGenerateTwoNotes = !convertType.HasFlag(PatternType.LowProbability);
             canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);
 
             if (canGenerateTwoNotes)
@@ -361,7 +391,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             int columnRepeat = Math.Min(spanCount, TotalColumns);
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
             {
                 while (PreviousPattern.ColumnHasObject(nextColumn))
                     nextColumn = Random.Next(RandomStart, TotalColumns);
@@ -372,8 +402,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 while (pattern.ColumnHasObject(nextColumn))
                     nextColumn = Random.Next(RandomStart, TotalColumns);
 
-                addToPattern(pattern, nextColumn, startTime, endTime);
-                startTime += segmentDuration;
+                addToPattern(pattern, nextColumn, startTime, EndTime);
+                startTime += SegmentDuration;
             }
 
             return pattern;
@@ -395,14 +425,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var pattern = new Pattern();
 
             int holdColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
             {
                 while (PreviousPattern.ColumnHasObject(holdColumn))
                     holdColumn = Random.Next(RandomStart, TotalColumns);
             }
 
             // Create the hold note
-            addToPattern(pattern, holdColumn, startTime, endTime);
+            addToPattern(pattern, holdColumn, startTime, EndTime);
 
             int nextColumn = Random.Next(RandomStart, TotalColumns);
             int noteCount;
@@ -434,7 +464,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 pattern.Add(rowPattern);
                 rowPattern.Clear();
 
-                startTime += segmentDuration;
+                startTime += SegmentDuration;
             }
 
             return pattern;
@@ -452,7 +482,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             if (curveData == null)
                 return HitObject.Samples;
 
-            double segmentTime = (endTime - HitObject.StartTime) / spanCount;
+            double segmentTime = (EndTime - HitObject.StartTime) / spanCount;
 
             int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
             return curveData.RepeatSamples[index];

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

@@ -19,26 +19,33 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
             : base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
         {
-            var endtimeData = HitObject as IHasEndTime;
-
-            endTime = endtimeData?.EndTime ?? 0;
+            endTime = (HitObject as IHasEndTime)?.EndTime ?? 0;
         }
 
-        public override Pattern Generate()
+        public override IEnumerable<Pattern> Generate()
+        {
+            yield return generate();
+        }
+
+        private Pattern generate()
         {
             var pattern = new Pattern();
 
             bool generateHold = endTime - HitObject.StartTime >= 100;
 
-            if (TotalColumns == 8)
+            switch (TotalColumns)
             {
-                if (HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_FINISH) && endTime - HitObject.StartTime < 1000)
+                case 8 when HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_FINISH) && endTime - HitObject.StartTime < 1000:
                     addToPattern(pattern, 0, generateHold);
-                else
+                    break;
+                case 8:
                     addToPattern(pattern, getNextRandomColumn(RandomStart), generateHold);
+                    break;
+                default:
+                    if (TotalColumns > 0)
+                        addToPattern(pattern, getNextRandomColumn(0), generateHold);
+                    break;
             }
-            else if (TotalColumns > 0)
-                addToPattern(pattern, getNextRandomColumn(0), generateHold);
 
             return pattern;
         }

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

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using OpenTK;
 using osu.Game.Audio;
@@ -20,7 +21,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
         private readonly PatternType convertType;
 
-        public HitObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, Pattern previousPattern, double previousTime, Vector2 previousPosition, double density, PatternType lastStair, IBeatmap originalBeatmap)
+        public HitObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, Pattern previousPattern, double previousTime, Vector2 previousPosition, double density,
+                                         PatternType lastStair, IBeatmap originalBeatmap)
             : base(random, hitObject, beatmap, previousPattern, originalBeatmap)
         {
             if (previousTime > hitObject.StartTime) throw new ArgumentOutOfRangeException(nameof(previousTime));
@@ -78,131 +80,137 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             else
                 convertType |= PatternType.LowProbability;
 
-            if ((convertType & PatternType.KeepSingle) == 0)
+            if (!convertType.HasFlag(PatternType.KeepSingle))
             {
                 if (HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_FINISH) && TotalColumns != 8)
                     convertType |= PatternType.Mirror;
-                else
+                else if (HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_CLAP))
                     convertType |= PatternType.Gathered;
             }
         }
 
-        public override Pattern Generate()
+        public override IEnumerable<Pattern> Generate()
         {
-            if (TotalColumns == 1)
+            yield return generate();
+        }
+
+        private Pattern generate()
+        {
+            var pattern = new Pattern();
+
+            try
             {
-                var pattern = new Pattern();
-                addToPattern(pattern, 0);
-                return pattern;
-            }
-
-            int lastColumn = PreviousPattern.HitObjects.FirstOrDefault()?.Column ?? 0;
-
-            if ((convertType & PatternType.Reverse) > 0 && PreviousPattern.HitObjects.Any())
-            {
-                // Generate a new pattern by copying the last hit objects in reverse-column order
-                var pattern = new Pattern();
-
-                for (int i = RandomStart; i < TotalColumns; i++)
-                    if (PreviousPattern.ColumnHasObject(i))
-                        addToPattern(pattern, RandomStart + TotalColumns - i - 1);
-
-                return pattern;
-            }
-
-            if ((convertType & PatternType.Cycle) > 0 && PreviousPattern.HitObjects.Count() == 1
-                // If we convert to 7K + 1, let's not overload the special key
-                && (TotalColumns != 8 || lastColumn != 0)
-                // Make sure the last column was not the centre column
-                && (TotalColumns % 2 == 0 || lastColumn != TotalColumns / 2))
-            {
-                // Generate a new pattern by cycling backwards (similar to Reverse but for only one hit object)
-                var pattern = new Pattern();
-
-                int column = RandomStart + TotalColumns - lastColumn - 1;
-                addToPattern(pattern, column);
-
-                return pattern;
-            }
-
-            if ((convertType & PatternType.ForceStack) > 0 && PreviousPattern.HitObjects.Any())
-            {
-                // Generate a new pattern by placing on the already filled columns
-                var pattern = new Pattern();
-
-                for (int i = RandomStart; i < TotalColumns; i++)
-                    if (PreviousPattern.ColumnHasObject(i))
-                        addToPattern(pattern, i);
-
-                return pattern;
-            }
-
-            if ((convertType & PatternType.Stair) > 0 && PreviousPattern.HitObjects.Count() == 1)
-            {
-                // Generate a new pattern by placing on the next column, cycling back to the start if there is no "next"
-                var pattern = new Pattern();
-
-                int targetColumn = lastColumn + 1;
-                if (targetColumn == TotalColumns)
+                if (TotalColumns == 1)
                 {
-                    targetColumn = RandomStart;
-                    StairType = PatternType.ReverseStair;
+                    addToPattern(pattern, 0);
+                    return pattern;
                 }
 
-                addToPattern(pattern, targetColumn);
-                return pattern;
-            }
+                int lastColumn = PreviousPattern.HitObjects.FirstOrDefault()?.Column ?? 0;
 
-            if ((convertType & PatternType.ReverseStair) > 0 && PreviousPattern.HitObjects.Count() == 1)
-            {
-                // Generate a new pattern by placing on the previous column, cycling back to the end if there is no "previous"
-                var pattern = new Pattern();
-
-                int targetColumn = lastColumn - 1;
-                if (targetColumn == RandomStart - 1)
+                if (convertType.HasFlag(PatternType.Reverse) && PreviousPattern.HitObjects.Any())
                 {
-                    targetColumn = TotalColumns - 1;
-                    StairType = PatternType.Stair;
+                    // Generate a new pattern by copying the last hit objects in reverse-column order
+                    for (int i = RandomStart; i < TotalColumns; i++)
+                        if (PreviousPattern.ColumnHasObject(i))
+                            addToPattern(pattern, RandomStart + TotalColumns - i - 1);
+
+                    return pattern;
                 }
 
-                addToPattern(pattern, targetColumn);
-                return pattern;
-            }
+                if (convertType.HasFlag(PatternType.Cycle) && PreviousPattern.HitObjects.Count() == 1
+                                                          // If we convert to 7K + 1, let's not overload the special key
+                                                          && (TotalColumns != 8 || lastColumn != 0)
+                                                          // Make sure the last column was not the centre column
+                                                          && (TotalColumns % 2 == 0 || lastColumn != TotalColumns / 2))
+                {
+                    // Generate a new pattern by cycling backwards (similar to Reverse but for only one hit object)
+                    int column = RandomStart + TotalColumns - lastColumn - 1;
+                    addToPattern(pattern, column);
 
-            if ((convertType & PatternType.KeepSingle) > 0)
-                return generateRandomNotes(1);
+                    return pattern;
+                }
+
+                if (convertType.HasFlag(PatternType.ForceStack) && PreviousPattern.HitObjects.Any())
+                {
+                    // Generate a new pattern by placing on the already filled columns
+                    for (int i = RandomStart; i < TotalColumns; i++)
+                        if (PreviousPattern.ColumnHasObject(i))
+                            addToPattern(pattern, i);
+
+                    return pattern;
+                }
+
+                if (PreviousPattern.HitObjects.Count() == 1)
+                {
+                    if (convertType.HasFlag(PatternType.Stair))
+                    {
+                        // Generate a new pattern by placing on the next column, cycling back to the start if there is no "next"
+                        int targetColumn = lastColumn + 1;
+                        if (targetColumn == TotalColumns)
+                            targetColumn = RandomStart;
+
+                        addToPattern(pattern, targetColumn);
+                        return pattern;
+                    }
+
+                    if (convertType.HasFlag(PatternType.ReverseStair))
+                    {
+                        // Generate a new pattern by placing on the previous column, cycling back to the end if there is no "previous"
+                        int targetColumn = lastColumn - 1;
+                        if (targetColumn == RandomStart - 1)
+                            targetColumn = TotalColumns - 1;
+
+                        addToPattern(pattern, targetColumn);
+                        return pattern;
+                    }
+                }
+
+                if (convertType.HasFlag(PatternType.KeepSingle))
+                    return pattern = generateRandomNotes(1);
+
+                if (convertType.HasFlag(PatternType.Mirror))
+                {
+                    if (ConversionDifficulty > 6.5)
+                        return pattern = generateRandomPatternWithMirrored(0.12, 0.38, 0.12);
+                    if (ConversionDifficulty > 4)
+                        return pattern = generateRandomPatternWithMirrored(0.12, 0.17, 0);
+                    return pattern = generateRandomPatternWithMirrored(0.12, 0, 0);
+                }
 
-            if ((convertType & PatternType.Mirror) > 0)
-            {
                 if (ConversionDifficulty > 6.5)
-                    return generateRandomPatternWithMirrored(0.12, 0.38, 0.12);
+                {
+                    if (convertType.HasFlag(PatternType.LowProbability))
+                        return pattern = generateRandomPattern(0.78, 0.42, 0, 0);
+                    return pattern = generateRandomPattern(1, 0.62, 0, 0);
+                }
+
                 if (ConversionDifficulty > 4)
-                    return generateRandomPatternWithMirrored(0.12, 0.17, 0);
-                return generateRandomPatternWithMirrored(0.12, 0, 0);
-            }
+                {
+                    if (convertType.HasFlag(PatternType.LowProbability))
+                        return pattern = generateRandomPattern(0.35, 0.08, 0, 0);
+                    return pattern = generateRandomPattern(0.52, 0.15, 0, 0);
+                }
 
-            if (ConversionDifficulty > 6.5)
+                if (ConversionDifficulty > 2)
+                {
+                    if (convertType.HasFlag(PatternType.LowProbability))
+                        return pattern = generateRandomPattern(0.18, 0, 0, 0);
+                    return pattern = generateRandomPattern(0.45, 0, 0, 0);
+                }
+
+                return pattern = generateRandomPattern(0, 0, 0, 0);
+            }
+            finally
             {
-                if ((convertType & PatternType.LowProbability) > 0)
-                    return generateRandomPattern(0.78, 0.42, 0, 0);
-                return generateRandomPattern(1, 0.62, 0, 0);
+                foreach (var obj in pattern.HitObjects)
+                {
+                    if (convertType.HasFlag(PatternType.Stair) && obj.Column == TotalColumns - 1)
+                        StairType = PatternType.ReverseStair;
+                    if (convertType.HasFlag(PatternType.ReverseStair) && obj.Column == RandomStart)
+                        StairType = PatternType.Stair;
+                }
             }
-
-            if (ConversionDifficulty > 4)
-            {
-                if ((convertType & PatternType.LowProbability) > 0)
-                    return generateRandomPattern(0.35, 0.08, 0, 0);
-                return generateRandomPattern(0.52, 0.15, 0, 0);
-            }
-
-            if (ConversionDifficulty > 2)
-            {
-                if ((convertType & PatternType.LowProbability) > 0)
-                    return generateRandomPattern(0.18, 0, 0, 0);
-                return generateRandomPattern(0.45, 0, 0, 0);
-            }
-
-            return generateRandomPattern(0, 0, 0, 0);
         }
 
         /// <summary>
@@ -218,7 +226,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         {
             var pattern = new Pattern();
 
-            bool allowStacking = (convertType & PatternType.ForceNotStack) == 0;
+            bool allowStacking = !convertType.HasFlag(PatternType.ForceNotStack);
 
             if (!allowStacking)
                 noteCount = Math.Min(noteCount, TotalColumns - RandomStart - PreviousPattern.ColumnWithObjects);
@@ -228,7 +236,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             {
                 while (pattern.ColumnHasObject(nextColumn) || PreviousPattern.ColumnHasObject(nextColumn) && !allowStacking)
                 {
-                    if ((convertType & PatternType.Gathered) > 0)
+                    if (convertType.HasFlag(PatternType.Gathered))
                     {
                         nextColumn++;
                         if (nextColumn == TotalColumns)
@@ -360,7 +368,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         {
             addToCentre = false;
 
-            if ((convertType & PatternType.ForceNotStack) > 0)
+            if (convertType.HasFlag(PatternType.ForceNotStack))
                 return getRandomNoteCount(1 / 2f + p2 / 2, p2, (p2 + p3) / 2, p3);
 
             switch (TotalColumns)

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

@@ -103,17 +103,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 HitObject lastObject = OriginalBeatmap.HitObjects.LastOrDefault();
                 HitObject firstObject = OriginalBeatmap.HitObjects.FirstOrDefault();
 
-                double drainTime = (lastObject?.StartTime ?? 0) - (firstObject?.StartTime ?? 0);
-                drainTime -= OriginalBeatmap.TotalBreakTime;
+                // Drain time in seconds
+                int drainTime = (int)(((lastObject?.StartTime ?? 0) - (firstObject?.StartTime ?? 0) - OriginalBeatmap.TotalBreakTime) / 1000);
 
                 if (drainTime == 0)
-                    drainTime = 10000000;
-
-                // We need this in seconds
-                drainTime /= 1000;
+                    drainTime = 10000;
 
                 BeatmapDifficulty difficulty = OriginalBeatmap.BeatmapInfo.BaseDifficulty;
-                conversionDifficulty = ((difficulty.DrainRate + MathHelper.Clamp(difficulty.ApproachRate, 4, 7)) / 1.5 + OriginalBeatmap.HitObjects.Count() / drainTime * 9f) / 38f * 5f / 1.15;
+                conversionDifficulty = ((difficulty.DrainRate + MathHelper.Clamp(difficulty.ApproachRate, 4, 7)) / 1.5 + (double)OriginalBeatmap.HitObjects.Count() / drainTime * 9f) / 38f * 5f / 1.15;
                 conversionDifficulty = Math.Min(conversionDifficulty.Value, 12);
 
                 return conversionDifficulty.Value;

osu.Game.Rulesets.Mania/Beatmaps/Patterns/PatternGenerator.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Collections.Generic;
 using osu.Game.Rulesets.Objects;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
@@ -42,9 +43,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
         }
 
         /// <summary>
-        /// Generates the pattern for <see cref="HitObject"/>, filled with hit objects.
+        /// Generates the patterns for <see cref="HitObject"/>, each filled with hit objects.
         /// </summary>
-        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        public abstract Pattern Generate();
+        /// <returns>The <see cref="Pattern"/>s containing the hit objects.</returns>
+        public abstract IEnumerable<Pattern> Generate();
     }
 }

osu.Game.Rulesets.Mania/ManiaSettingsSubsection.cs

@@ -19,14 +19,14 @@ namespace osu.Game.Rulesets.Mania
         }
 
         [BackgroundDependencyLoader]
-        private void load(ManiaConfigManager config)
+        private void load()
         {
             Children = new Drawable[]
             {
                 new SettingsEnumDropdown<ManiaScrollingDirection>
                 {
                     LabelText = "Scrolling direction",
-                    Bindable = config.GetBindable<ManiaScrollingDirection>(ManiaSetting.ScrollDirection)
+                    Bindable = ((ManiaConfigManager)Config).GetBindable<ManiaScrollingDirection>(ManiaSetting.ScrollDirection)
                 }
             };
         }

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

@@ -15,11 +15,15 @@ namespace osu.Game.Rulesets.Mania.MathUtils
         private const uint y = 842502087;
         private const uint z = 3579807591;
         private const uint w = 273326509;
-        private uint _x, _y = y, _z = z, _w = w;
+
+        internal uint X { get; private set; }
+        internal uint Y { get; private set; } = y;
+        internal uint Z { get; private set; } = z;
+        internal uint W { get; private set; } = w;
 
         public FastRandom(int seed)
         {
-            _x = (uint)seed;
+            X = (uint)seed;
         }
 
         public FastRandom()
@@ -33,11 +37,11 @@ namespace osu.Game.Rulesets.Mania.MathUtils
         /// <returns>The random value.</returns>
         public uint NextUInt()
         {
-            uint t = _x ^ _x << 11;
-            _x = _y;
-            _y = _z;
-            _z = _w;
-            return _w = _w ^ _w >> 19 ^ t ^ t >> 8;
+            uint t = X ^ X << 11;
+            X = Y;
+            Y = Z;
+            Z = W;
+            return W = W ^ W >> 19 ^ t ^ t >> 8;
         }
 
         /// <summary>

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

@@ -38,8 +38,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
         private readonly Container<DrawableHoldNoteTick> tickContainer;
 
-        public DrawableHoldNote(HoldNote hitObject, ManiaAction action)
-            : base(hitObject, action)
+        public DrawableHoldNote(HoldNote hitObject)
+            : base(hitObject)
         {
             RelativeSizeAxes = Axes.X;
 
@@ -57,12 +57,12 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                         HoldStartTime = () => holdStartTime
                     })
                 },
-                head = new DrawableHeadNote(this, action)
+                head = new DrawableHeadNote(this)
                 {
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre
                 },
-                tail = new DrawableTailNote(this, action)
+                tail = new DrawableTailNote(this)
                 {
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre
@@ -118,7 +118,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             if (Time.Current < HitObject.StartTime || Time.Current > HitObject.EndTime)
                 return false;
 
-            if (action != Action)
+            if (action != Action.Value)
                 return false;
 
             // The user has pressed during the body of the hold note, after the head note and its hit windows have passed
@@ -135,7 +135,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             if (!holdStartTime.HasValue)
                 return false;
 
-            if (action != Action)
+            if (action != Action.Value)
                 return false;
 
             holdStartTime = null;
@@ -154,8 +154,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         {
             private readonly DrawableHoldNote holdNote;
 
-            public DrawableHeadNote(DrawableHoldNote holdNote, ManiaAction action)
-                : base(holdNote.HitObject.Head, action)
+            public DrawableHeadNote(DrawableHoldNote holdNote)
+                : base(holdNote.HitObject.Head)
             {
                 this.holdNote = holdNote;
             }
@@ -191,8 +191,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
             private readonly DrawableHoldNote holdNote;
 
-            public DrawableTailNote(DrawableHoldNote holdNote, ManiaAction action)
-                : base(holdNote.HitObject.Tail, action)
+            public DrawableTailNote(DrawableHoldNote holdNote)
+                : base(holdNote.HitObject.Tail)
             {
                 this.holdNote = holdNote;
             }
@@ -235,7 +235,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                 if (!holdNote.holdStartTime.HasValue)
                     return false;
 
-                if (action != Action)
+                if (action != Action.Value)
                     return false;
 
                 UpdateJudgement(true);

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
@@ -10,30 +11,26 @@ using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
-    public abstract class DrawableManiaHitObject<TObject> : DrawableHitObject<ManiaHitObject>
-        where TObject : ManiaHitObject
+    public abstract class DrawableManiaHitObject : DrawableHitObject<ManiaHitObject>
     {
         /// <summary>
-        /// The key that will trigger input for this hit object.
+        /// The <see cref="ManiaAction"/> which causes this <see cref="DrawableManiaHitObject{TObject}"/> to be hit.
         /// </summary>
-        protected ManiaAction Action { get; }
-
-        public new TObject HitObject;
+        protected readonly IBindable<ManiaAction> Action = new Bindable<ManiaAction>();
 
         protected readonly IBindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
 
-        protected DrawableManiaHitObject(TObject hitObject, ManiaAction? action = null)
+        protected DrawableManiaHitObject(ManiaHitObject hitObject)
             : base(hitObject)
         {
-            HitObject = hitObject;
-
-            if (action != null)
-                Action = action.Value;
         }
 
-        [BackgroundDependencyLoader]
-        private void load(IScrollingInfo scrollingInfo)
+        [BackgroundDependencyLoader(true)]
+        private void load([CanBeNull] IBindable<ManiaAction> action, [NotNull] IScrollingInfo scrollingInfo)
         {
+            if (action != null)
+                Action.BindTo(action);
+
             Direction.BindTo(scrollingInfo.Direction);
             Direction.BindValueChanged(OnDirectionChanged, true);
         }
@@ -42,6 +39,18 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         {
             Anchor = Origin = direction == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre;
         }
+    }
+
+    public abstract class DrawableManiaHitObject<TObject> : DrawableManiaHitObject
+        where TObject : ManiaHitObject
+    {
+        public new readonly TObject HitObject;
+
+        protected DrawableManiaHitObject(TObject hitObject)
+            : base(hitObject)
+        {
+            HitObject = hitObject;
+        }
 
         protected override void UpdateState(ArmedState state)
         {

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

@@ -20,8 +20,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     {
         private readonly NotePiece headPiece;
 
-        public DrawableNote(Note hitObject, ManiaAction action)
-            : base(hitObject, action)
+        public DrawableNote(Note hitObject)
+            : base(hitObject)
         {
             RelativeSizeAxes = Axes.X;
             AutoSizeAxes = Axes.Y;
@@ -74,7 +74,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
         public virtual bool OnPressed(ManiaAction action)
         {
-            if (action != Action)
+            if (action != Action.Value)
                 return false;
 
             return UpdateJudgement(true);

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

@@ -56,10 +56,15 @@ namespace osu.Game.Rulesets.Mania.Replays
             {
                 foreach (var point in group)
                 {
-                    if (point is HitPoint)
-                        actions.Add(columnActions[point.Column]);
-                    if (point is ReleasePoint)
-                        actions.Remove(columnActions[point.Column]);
+                    switch (point)
+                    {
+                        case HitPoint _:
+                            actions.Add(columnActions[point.Column]);
+                            break;
+                        case ReleasePoint _:
+                            actions.Remove(columnActions[point.Column]);
+                            break;
+                    }
                 }
 
                 Replay.Frames.Add(new ManiaReplayFrame(group.First().Time, actions.ToArray()));

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

@@ -3,7 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Input;
+using osu.Framework.Input.StateChanges;
 using osu.Game.Rulesets.Replays;
 
 namespace osu.Game.Rulesets.Mania.Replays

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

@@ -1,103 +1,132 @@
 {
     "Mappings": [{
-            "StartTime": 500,
-            "Objects": [{
-                    "StartTime": 500,
-                    "EndTime": 2500,
-                    "Column": 0
-                },
-                {
-                    "StartTime": 1500,
-                    "EndTime": 2500,
-                    "Column": 1
-                }
-            ]
-        },
-        {
-            "StartTime": 3000,
-            "Objects": [{
-                "StartTime": 3000,
-                "EndTime": 4000,
-                "Column": 2
-            }]
-        },
-        {
-            "StartTime": 4500,
-            "Objects": [{
-                "StartTime": 4500,
-                "EndTime": 5500,
-                "Column": 4
-            }]
-        },
-        {
-            "StartTime": 6000,
-            "Objects": [{
-                "StartTime": 6000,
-                "EndTime": 6500,
-                "Column": 2
-            }]
-        },
-        {
-            "StartTime": 7000,
-            "Objects": [{
-                "StartTime": 7000,
-                "EndTime": 8000,
-                "Column": 2
-            }]
-        },
-        {
-            "StartTime": 8500,
-            "Objects": [{
-                "StartTime": 8500,
-                "EndTime": 11000,
-                "Column": 0
-            }]
-        },
-        {
-            "StartTime": 11500,
-            "Objects": [{
-                "StartTime": 11500,
-                "EndTime": 12000,
-                "Column": 1
-            }]
-        },
-        {
-            "StartTime": 12500,
-            "Objects": [{
-                "StartTime": 12500,
-                "EndTime": 16500,
-                "Column": 4
-            }]
-        },
-        {
-            "StartTime": 17000,
-            "Objects": [{
-                "StartTime": 17000,
-                "EndTime": 18000,
-                "Column": 2
-            }]
-        },
-        {
-            "StartTime": 18500,
-            "Objects": [{
-                "StartTime": 18500,
-                "EndTime": 19450,
-                "Column": 0
-            }]
-        },
-        {
-            "StartTime": 19875,
-            "Objects": [{
-                    "StartTime": 19875,
-                    "EndTime": 23875,
-                    "Column": 1
-                },
-                {
-                    "StartTime": 19875,
-                    "EndTime": 23875,
-                    "Column": 0
-                }
-            ]
-        }
-    ]
+        "RandomW": 2659373485,
+        "RandomX": 3579807591,
+        "RandomY": 273326509,
+        "RandomZ": 272969173,
+        "StartTime": 500.0,
+        "Objects": [{
+            "StartTime": 500.0,
+            "EndTime": 2500.0,
+            "Column": 0
+        }, {
+            "StartTime": 1500.0,
+            "EndTime": 2500.0,
+            "Column": 1
+        }]
+    }, {
+        "RandomW": 3083803045,
+        "RandomX": 273326509,
+        "RandomY": 272969173,
+        "RandomZ": 2659373485,
+        "StartTime": 3000.0,
+        "Objects": [{
+            "StartTime": 3000.0,
+            "EndTime": 4000.0,
+            "Column": 2
+        }]
+    }, {
+        "RandomW": 4073554232,
+        "RandomX": 272969173,
+        "RandomY": 2659373485,
+        "RandomZ": 3083803045,
+        "StartTime": 4500.0,
+        "Objects": [{
+            "StartTime": 4500.0,
+            "EndTime": 5500.0,
+            "Column": 4
+        }]
+    }, {
+        "RandomW": 3420401969,
+        "RandomX": 2659373485,
+        "RandomY": 3083803045,
+        "RandomZ": 4073554232,
+        "StartTime": 6000.0,
+        "Objects": [{
+            "StartTime": 6000.0,
+            "EndTime": 6500.0,
+            "Column": 2
+        }]
+    }, {
+        "RandomW": 1129881182,
+        "RandomX": 3083803045,
+        "RandomY": 4073554232,
+        "RandomZ": 3420401969,
+        "StartTime": 7000.0,
+        "Objects": [{
+            "StartTime": 7000.0,
+            "EndTime": 8000.0,
+            "Column": 2
+        }]
+    }, {
+        "RandomW": 315568458,
+        "RandomX": 3420401969,
+        "RandomY": 1129881182,
+        "RandomZ": 2358617505,
+        "StartTime": 8500.0,
+        "Objects": [{
+            "StartTime": 8500.0,
+            "EndTime": 11000.0,
+            "Column": 0
+        }]
+    }, {
+        "RandomW": 548134043,
+        "RandomX": 1129881182,
+        "RandomY": 2358617505,
+        "RandomZ": 315568458,
+        "StartTime": 11500.0,
+        "Objects": [{
+            "StartTime": 11500.0,
+            "EndTime": 12000.0,
+            "Column": 1
+        }]
+    }, {
+        "RandomW": 3979422122,
+        "RandomX": 548134043,
+        "RandomY": 2810584254,
+        "RandomZ": 2250186050,
+        "StartTime": 12500.0,
+        "Objects": [{
+            "StartTime": 12500.0,
+            "EndTime": 16500.0,
+            "Column": 4
+        }]
+    }, {
+        "RandomW": 2466283411,
+        "RandomX": 2810584254,
+        "RandomY": 2250186050,
+        "RandomZ": 3979422122,
+        "StartTime": 17000.0,
+        "Objects": [{
+            "StartTime": 17000.0,
+            "EndTime": 18000.0,
+            "Column": 2
+        }]
+    }, {
+        "RandomW": 83157665,
+        "RandomX": 2250186050,
+        "RandomY": 3979422122,
+        "RandomZ": 2466283411,
+        "StartTime": 18500.0,
+        "Objects": [{
+            "StartTime": 18500.0,
+            "EndTime": 19450.0,
+            "Column": 0
+        }]
+    }, {
+        "RandomW": 2383087700,
+        "RandomX": 83157665,
+        "RandomY": 2055150192,
+        "RandomZ": 510071020,
+        "StartTime": 19875.0,
+        "Objects": [{
+            "StartTime": 19875.0,
+            "EndTime": 23875.0,
+            "Column": 1
+        }, {
+            "StartTime": 19875.0,
+            "EndTime": 23875.0,
+            "Column": 0
+        }]
+    }]
 }

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

@@ -7,6 +7,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.UI.Components;
@@ -19,21 +21,7 @@ namespace osu.Game.Rulesets.Mania.UI
         private const float column_width = 45;
         private const float special_column_width = 70;
 
-        private ManiaAction action;
-
-        public ManiaAction Action
-        {
-            get => action;
-            set
-            {
-                if (action == value)
-                    return;
-                action = value;
-
-                background.Action = value;
-                keyArea.Action = value;
-            }
-        }
+        public readonly Bindable<ManiaAction> Action = new Bindable<ManiaAction>();
 
         private readonly ColumnBackground background;
         private readonly ColumnKeyArea keyArea;
@@ -44,8 +32,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected override Container<Drawable> Content => hitObjectArea;
 
-        public Column(ScrollingDirection direction)
-            : base(direction)
+        public Column()
         {
             RelativeSizeAxes = Axes.Y;
             Width = column_width;
@@ -130,6 +117,13 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+        {
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
+            dependencies.CacheAs<IBindable<ManiaAction>>(Action);
+            return dependencies;
+        }
+
         /// <summary>
         /// Adds a DrawableHitObject to this Playfield.
         /// </summary>
@@ -144,7 +138,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         internal void OnJudgement(DrawableHitObject judgedObject, Judgement judgement)
         {
-            if (!judgement.IsHit || !judgedObject.DisplayJudgement)
+            if (!judgement.IsHit || !judgedObject.DisplayJudgement || !DisplayJudgements)
                 return;
 
             explosionContainer.Add(new HitExplosion(judgedObject)

osu.Game.Rulesets.Mania/UI/Components/ColumnBackground.cs

@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Mania.UI.Components
 {
     public class ColumnBackground : CompositeDrawable, IKeyBindingHandler<ManiaAction>, IHasAccentColour
     {
-        public ManiaAction Action;
+        private readonly IBindable<ManiaAction> action = new Bindable<ManiaAction>();
 
         private Box background;
         private Box backgroundOverlay;
@@ -25,8 +25,10 @@ namespace osu.Game.Rulesets.Mania.UI.Components
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
 
         [BackgroundDependencyLoader]
-        private void load(IScrollingInfo scrollingInfo)
+        private void load(IBindable<ManiaAction> action, IScrollingInfo scrollingInfo)
         {
+            this.action.BindTo(action);
+
             InternalChildren = new[]
             {
                 background = new Box
@@ -91,14 +93,14 @@ namespace osu.Game.Rulesets.Mania.UI.Components
 
         public bool OnPressed(ManiaAction action)
         {
-            if (action == Action)
+            if (action == this.action.Value)
                 backgroundOverlay.FadeTo(1, 50, Easing.OutQuint).Then().FadeTo(0.5f, 250, Easing.OutQuint);
             return false;
         }
 
         public bool OnReleased(ManiaAction action)
         {
-            if (action == Action)
+            if (action == this.action.Value)
                 backgroundOverlay.FadeTo(0, 250, Easing.OutQuint);
             return false;
         }

osu.Game.Rulesets.Mania/UI/Components/ColumnKeyArea.cs

@@ -21,15 +21,16 @@ namespace osu.Game.Rulesets.Mania.UI.Components
         private const float key_icon_size = 10;
         private const float key_icon_corner_radius = 3;
 
-        public ManiaAction Action;
-
+        private readonly IBindable<ManiaAction> action = new Bindable<ManiaAction>();
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
 
         private Container keyIcon;
 
         [BackgroundDependencyLoader]
-        private void load(IScrollingInfo scrollingInfo)
+        private void load(IBindable<ManiaAction> action, IScrollingInfo scrollingInfo)
         {
+            this.action.BindTo(action);
+
             Drawable gradient;
 
             InternalChildren = new[]
@@ -107,14 +108,14 @@ namespace osu.Game.Rulesets.Mania.UI.Components
 
         public bool OnPressed(ManiaAction action)
         {
-            if (action == Action)
+            if (action == this.action.Value)
                 keyIcon.ScaleTo(1.4f, 50, Easing.OutQuint).Then().ScaleTo(1.3f, 250, Easing.OutQuint);
             return false;
         }
 
         public bool OnReleased(ManiaAction action)
         {
-            if (action == Action)
+            if (action == this.action.Value)
                 keyIcon.ScaleTo(1f, 125, Easing.OutQuint);
             return false;
         }

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

@@ -8,11 +8,9 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Configuration;
-using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -21,8 +19,7 @@ namespace osu.Game.Rulesets.Mania.UI
         public List<Column> Columns => stages.SelectMany(x => x.Columns).ToList();
         private readonly List<ManiaStage> stages = new List<ManiaStage>();
 
-        public ManiaPlayfield(ScrollingDirection direction, List<StageDefinition> stageDefinitions)
-            : base(direction)
+        public ManiaPlayfield(List<StageDefinition> stageDefinitions)
         {
             if (stageDefinitions == null)
                 throw new ArgumentNullException(nameof(stageDefinitions));
@@ -42,7 +39,7 @@ namespace osu.Game.Rulesets.Mania.UI
             int firstColumnIndex = 0;
             for (int i = 0; i < stageDefinitions.Count; i++)
             {
-                var newStage = new ManiaStage(direction, firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
+                var newStage = new ManiaStage(firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
                 newStage.VisibleTimeRange.BindTo(VisibleTimeRange);
 
                 playfieldGrid.Content[0][i] = newStage;
@@ -76,10 +73,5 @@ namespace osu.Game.Rulesets.Mania.UI
         {
             maniaConfig.BindWith(ManiaSetting.ScrollTime, VisibleTimeRange);
         }
-
-        internal void OnJudgement(DrawableHitObject judgedObject, Judgement judgement)
-        {
-            getStageByColumn(((ManiaHitObject)judgedObject.HitObject).Column).OnJudgement(judgedObject, judgement);
-        }
     }
 }

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

@@ -70,24 +70,24 @@ namespace osu.Game.Rulesets.Mania.UI
         }
 
         [BackgroundDependencyLoader]
-        private void load(ManiaConfigManager config)
+        private void load()
         {
             BarLines.ForEach(Playfield.Add);
 
-            config.BindWith(ManiaSetting.ScrollDirection, configDirection);
+            ((ManiaConfigManager)Config).BindWith(ManiaSetting.ScrollDirection, configDirection);
             configDirection.BindValueChanged(d => scrollingInfo.Direction.Value = (ScrollingDirection)d, true);
         }
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IScrollingInfo>(scrollingInfo = new ScrollingInfo());
             return dependencies;
         }
 
-        protected sealed override Playfield CreatePlayfield() => new ManiaPlayfield(scrollingInfo.Direction, Beatmap.Stages)
+        protected sealed override Playfield CreatePlayfield() => new ManiaPlayfield(Beatmap.Stages)
         {
             Anchor = Anchor.Centre,
             Origin = Anchor.Centre,
@@ -101,17 +101,15 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected override DrawableHitObject<ManiaHitObject> GetVisualRepresentation(ManiaHitObject h)
         {
-            ManiaAction action = Playfield.Columns.ElementAt(h.Column).Action;
-
-            var holdNote = h as HoldNote;
-            if (holdNote != null)
-                return new DrawableHoldNote(holdNote, action);
-
-            var note = h as Note;
-            if (note != null)
-                return new DrawableNote(note, action);
-
-            return null;
+            switch (h)
+            {
+                case HoldNote holdNote:
+                    return new DrawableHoldNote(holdNote);
+                case Note note:
+                    return new DrawableNote(note);
+                default:
+                    return null;
+            }
         }
 
         protected override Vector2 PlayfieldArea => new Vector2(1, 0.8f);

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

@@ -11,11 +11,6 @@ namespace osu.Game.Rulesets.Mania.UI
     {
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
 
-        public ManiaScrollingPlayfield(ScrollingDirection direction)
-            : base(direction)
-        {
-        }
-
         [BackgroundDependencyLoader]
         private void load(IScrollingInfo scrollingInfo)
         {

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

@@ -43,8 +43,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         private readonly int firstColumnIndex;
 
-        public ManiaStage(ScrollingDirection direction, int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
-            : base(direction)
+        public ManiaStage(int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
         {
             this.firstColumnIndex = firstColumnIndex;
 
@@ -124,10 +123,10 @@ namespace osu.Game.Rulesets.Mania.UI
             for (int i = 0; i < definition.Columns; i++)
             {
                 var isSpecial = definition.IsSpecialColumn(i);
-                var column = new Column(direction)
+                var column = new Column
                 {
                     IsSpecial = isSpecial,
-                    Action = isSpecial ? specialColumnStartAction++ : normalColumnStartAction++
+                    Action = { Value = isSpecial ? specialColumnStartAction++ : normalColumnStartAction++ }
                 };
 
                 AddColumn(column);
@@ -164,7 +163,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         internal void OnJudgement(DrawableHitObject judgedObject, Judgement judgement)
         {
-            if (!judgedObject.DisplayJudgement)
+            if (!judgedObject.DisplayJudgement || !DisplayJudgements)
                 return;
 
             judgements.Clear();

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

@@ -54,7 +54,7 @@ namespace osu.Game.Rulesets.Osu.Tests
     public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
-        /// A sane value to account for osu!stable using ints everwhere.
+        /// A sane value to account for osu!stable using <see cref="int"/>s everywhere.
         /// </summary>
         private const double conversion_lenience = 2;
 

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

@@ -15,10 +15,10 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
         {
         }
 
-        public override void PostProcess()
+        public override void PreProcess()
         {
+            base.PreProcess();
             applyStacking((Beatmap<OsuHitObject>)Beatmap);
-            base.PostProcess();
         }
 
         private void applyStacking(Beatmap<OsuHitObject> beatmap)
@@ -44,7 +44,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                         continue;
 
                     double endTime = (stackBaseObject as IHasEndTime)?.EndTime ?? stackBaseObject.StartTime;
-                    double stackThreshold = objectN.TimePreempt * beatmap.BeatmapInfo?.StackLeniency ?? 0.7f;
+                    double stackThreshold = objectN.TimePreempt * beatmap.BeatmapInfo.StackLeniency;
 
                     if (objectN.StartTime - endTime > stackThreshold)
                         //We are no longer within stacking range of the next object.
@@ -87,7 +87,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                 OsuHitObject objectI = beatmap.HitObjects[i];
                 if (objectI.StackHeight != 0 || objectI is Spinner) continue;
 
-                double stackThreshold = objectI.TimePreempt * beatmap.BeatmapInfo?.StackLeniency ?? 0.7f;
+                double stackThreshold = objectI.TimePreempt * beatmap.BeatmapInfo.StackLeniency;
 
                 /* If this object is a hitcircle, then we enter this "special" case.
                     * It either ends with a stack of hitcircles only, or a stack of hitcircles that are underneath a slider.

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

@@ -61,19 +61,19 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             double speedRating = Math.Sqrt(skills[1].DifficultyValue()) * difficulty_multiplier;
             double starRating = aimRating + speedRating + Math.Abs(aimRating - speedRating) / 2;
 
-            // Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be remoevd in the future
+            // Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be removed in the future
             double hitWindowGreat = (int)(beatmap.HitObjects.First().HitWindows.Great / 2) / timeRate;
-            double preEmpt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
+            double preempt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
 
             int maxCombo = beatmap.HitObjects.Count();
-            // Add the ticks + tail of the slider. 1 is subtracted because the "headcircle" would be counted twice (once for the slider itself in the line above)
+            // Add the ticks + tail of the slider. 1 is subtracted because the head circle would be counted twice (once for the slider itself in the line above)
             maxCombo += beatmap.HitObjects.OfType<Slider>().Sum(s => s.NestedHitObjects.Count - 1);
 
             return new OsuDifficultyAttributes(mods, starRating)
             {
                 AimStrain = aimRating,
                 SpeedStrain = speedRating,
-                ApproachRate = preEmpt > 1200 ? (1800 - preEmpt) / 120 : (1200 - preEmpt) / 150 + 5,
+                ApproachRate = preempt > 1200 ? (1800 - preempt) / 120 : (1200 - preempt) / 150 + 5,
                 OverallDifficulty = (80 - hitWindowGreat) / 6,
                 MaxCombo = maxCombo
             };

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

@@ -1,12 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using osu.Game.Rulesets.Osu.UI;
-
-namespace osu.Game.Rulesets.Osu.Edit
-{
-    public class OsuEditPlayfield : OsuPlayfield
-    {
-        protected override bool DisplayJudgements => false;
-    }
-}

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

@@ -4,7 +4,6 @@
 using osu.Framework.Graphics.Cursor;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.UI;
-using osu.Game.Rulesets.UI;
 using OpenTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
@@ -16,8 +15,6 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
         }
 
-        protected override Playfield CreatePlayfield() => new OsuEditPlayfield();
-
         protected override Vector2 PlayfieldArea => Vector2.One;
 
         protected override CursorContainer CreateCursor() => null;

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

@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Mods
 
         public override void ApplyToDrawableHitObjects(IEnumerable<DrawableHitObject> drawables)
         {
-            void adjustFadeIn(OsuHitObject h) => h.TimeFadein = h.TimePreempt * fade_in_duration_multiplier;
+            void adjustFadeIn(OsuHitObject h) => h.TimeFadeIn = h.TimePreempt * fade_in_duration_multiplier;
 
             foreach (var d in drawables.OfType<DrawableOsuHitObject>())
             {
@@ -41,7 +41,7 @@ namespace osu.Game.Rulesets.Osu.Mods
 
             var h = d.HitObject;
 
-            var fadeOutStartTime = h.StartTime - h.TimePreempt + h.TimeFadein;
+            var fadeOutStartTime = h.StartTime - h.TimePreempt + h.TimeFadeIn;
             var fadeOutDuration = h.TimePreempt * fade_out_duration_multiplier;
 
             // new duration from completed fade in to end (before fading out)

osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointRenderer.cs

@@ -96,12 +96,12 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
 
                         using (fp.BeginAbsoluteSequence(fadeInTime))
                         {
-                            fp.FadeIn(currHitObject.TimeFadein);
-                            fp.ScaleTo(1, currHitObject.TimeFadein, Easing.Out);
+                            fp.FadeIn(currHitObject.TimeFadeIn);
+                            fp.ScaleTo(1, currHitObject.TimeFadeIn, Easing.Out);
 
-                            fp.MoveTo(pointEndPosition, currHitObject.TimeFadein, Easing.Out);
+                            fp.MoveTo(pointEndPosition, currHitObject.TimeFadeIn, Easing.Out);
 
-                            fp.Delay(fadeOutTime - fadeInTime).FadeOut(currHitObject.TimeFadein);
+                            fp.Delay(fadeOutTime - fadeInTime).FadeOut(currHitObject.TimeFadeIn);
                         }
 
                         fp.Expire(true);

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

@@ -100,7 +100,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             base.UpdatePreemptState();
 
-            ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadein * 2, HitObject.TimePreempt));
+            ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadeIn * 2, HitObject.TimePreempt));
             ApproachCircle.ScaleTo(1.1f, HitObject.TimePreempt);
         }
 

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

@@ -1,11 +1,13 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
 using System.ComponentModel;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Framework.Graphics;
 using System.Linq;
 using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
 using OpenTK.Graphics;
 
@@ -32,7 +34,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             {
                 UpdatePreemptState();
 
-                using (BeginDelayedSequence(HitObject.TimePreempt + (Judgements.FirstOrDefault()?.TimeOffset ?? 0), true))
+                var judgementOffset = Math.Min(HitObject.HitWindows.HalfWindowFor(HitResult.Miss), Judgements.FirstOrDefault()?.TimeOffset ?? 0);
+
+                using (BeginDelayedSequence(HitObject.TimePreempt + judgementOffset, true))
                     UpdateCurrentState(state);
             }
         }
@@ -45,7 +49,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 AccentColour = skin.GetValue<SkinConfiguration, Color4>(s => s.ComboColours.Count > 0 ? s.ComboColours[combo.ComboIndex % s.ComboColours.Count] : (Color4?)null) ?? Color4.White;
         }
 
-        protected virtual void UpdatePreemptState() => this.FadeIn(HitObject.TimeFadein);
+        protected virtual void UpdatePreemptState() => this.FadeIn(HitObject.TimeFadeIn);
 
         protected virtual void UpdateCurrentState(ArmedState state)
         {

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

@@ -93,9 +93,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 base.AccentColour = value;
                 Body.AccentColour = AccentColour;
                 Ball.AccentColour = AccentColour;
-                if (HasNestedHitObjects)
-                    foreach (var drawableHitObject in NestedHitObjects)
-                        drawableHitObject.AccentColour = AccentColour;
+
+                foreach (var drawableHitObject in NestedHitObjects)
+                    drawableHitObject.AccentColour = AccentColour;
             }
         }
 
@@ -136,7 +136,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             if (!userTriggered && Time.Current >= slider.EndTime)
             {
-                var judgementsCount = NestedHitObjects.Count;
+                var judgementsCount = NestedHitObjects.Count();
                 var judgementsHit = NestedHitObjects.Count(h => h.IsHit);
 
                 var hitFraction = (double)judgementsHit / judgementsCount;

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

@@ -167,7 +167,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             Disc.Tracking = OsuActionInputManager.PressedActions.Any(x => x == OsuAction.LeftButton || x == OsuAction.RightButton);
             if (!spmCounter.IsPresent && Disc.Tracking)
-                spmCounter.FadeIn(HitObject.TimeFadein);
+                spmCounter.FadeIn(HitObject.TimeFadeIn);
 
             base.Update();
         }

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SliderBall.cs

@@ -5,7 +5,8 @@ using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Input;
+using osu.Framework.Input.EventArgs;
+using osu.Framework.Input.States;
 using osu.Game.Rulesets.Objects.Types;
 using OpenTK;
 using OpenTK.Graphics;

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SliderBody.cs

@@ -212,7 +212,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             var spanProgress = slider.ProgressAt(completionProgress);
 
             double start = 0;
-            double end = SnakingIn ? MathHelper.Clamp((Time.Current - (slider.StartTime - slider.TimePreempt)) / slider.TimeFadein, 0, 1) : 1;
+            double end = SnakingIn ? MathHelper.Clamp((Time.Current - (slider.StartTime - slider.TimePreempt)) / slider.TimeFadeIn, 0, 1) : 1;
 
             if (span >= slider.SpanCount() - 1)
             {

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SpinnerDisc.cs

@@ -4,7 +4,7 @@
 using System;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Input;
+using osu.Framework.Input.States;
 using osu.Game.Graphics;
 using OpenTK;
 using OpenTK.Graphics;

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

@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Objects
         public event Action<Vector2> PositionChanged;
 
         public double TimePreempt = 600;
-        public double TimeFadein = 400;
+        public double TimeFadeIn = 400;
 
         private Vector2 position;
 
@@ -65,7 +65,7 @@ namespace osu.Game.Rulesets.Osu.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimePreempt = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1800, 1200, 450);
-            TimeFadein = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1200, 800, 300);
+            TimeFadeIn = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1200, 800, 300);
 
             Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
         }

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

@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Objects
                 // This is so on repeats ticks don't appear too late to be visually processed by the player.
                 offset = 200;
             else
-                offset = TimeFadein * 0.66f;
+                offset = TimeFadeIn * 0.66f;
 
             TimePreempt = (StartTime - SpanStartTime) / 2 + offset;
         }

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -31,8 +31,8 @@ namespace osu.Game.Rulesets.Osu
 
         public override IEnumerable<KeyBinding> GetDefaultKeyBindings(int variant = 0) => new[]
         {
-            new KeyBinding(InputKey.Z, OsuAction.LeftButton),
-            new KeyBinding(InputKey.X, OsuAction.RightButton),
+            new KeyBinding(InputKey.A, OsuAction.LeftButton),
+            new KeyBinding(InputKey.S, OsuAction.RightButton),
             new KeyBinding(InputKey.MouseLeft, OsuAction.LeftButton),
             new KeyBinding(InputKey.MouseRight, OsuAction.RightButton),
         };

osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs

@@ -285,44 +285,45 @@ namespace osu.Game.Rulesets.Osu.Replays
 
             AddFrameToReplay(startFrame);
 
-            // We add intermediate frames for spinning / following a slider here.
-            if (h is Spinner)
+            switch (h)
             {
-                Spinner s = h as Spinner;
-
-                Vector2 difference = startPosition - SPINNER_CENTRE;
-
-                float radius = difference.Length;
-                float angle = radius == 0 ? 0 : (float)Math.Atan2(difference.Y, difference.X);
-
-                double t;
-
-                for (double j = h.StartTime + FrameDelay; j < s.EndTime; j += FrameDelay)
+                // We add intermediate frames for spinning / following a slider here.
+                case Spinner spinner:
                 {
-                    t = ApplyModsToTime(j - h.StartTime) * spinnerDirection;
+                    Vector2 difference = startPosition - SPINNER_CENTRE;
 
-                    Vector2 pos = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
-                    AddFrameToReplay(new OsuReplayFrame((int)j, new Vector2(pos.X, pos.Y), action));
+                    float radius = difference.Length;
+                    float angle = radius == 0 ? 0 : (float)Math.Atan2(difference.Y, difference.X);
+
+                    double t;
+
+                    for (double j = h.StartTime + FrameDelay; j < spinner.EndTime; j += FrameDelay)
+                    {
+                        t = ApplyModsToTime(j - h.StartTime) * spinnerDirection;
+
+                        Vector2 pos = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
+                        AddFrameToReplay(new OsuReplayFrame((int)j, new Vector2(pos.X, pos.Y), action));
+                    }
+
+                    t = ApplyModsToTime(spinner.EndTime - h.StartTime) * spinnerDirection;
+                    Vector2 endPosition = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
+
+                    AddFrameToReplay(new OsuReplayFrame(spinner.EndTime, new Vector2(endPosition.X, endPosition.Y), action));
+
+                    endFrame.Position = endPosition;
+                    break;
                 }
-
-                t = ApplyModsToTime(s.EndTime - h.StartTime) * spinnerDirection;
-                Vector2 endPosition = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
-
-                AddFrameToReplay(new OsuReplayFrame(s.EndTime, new Vector2(endPosition.X, endPosition.Y), action));
-
-                endFrame.Position = endPosition;
-            }
-            else if (h is Slider)
-            {
-                Slider s = h as Slider;
-
-                for (double j = FrameDelay; j < s.Duration; j += FrameDelay)
+                case Slider slider:
                 {
-                    Vector2 pos = s.StackedPositionAt(j / s.Duration);
-                    AddFrameToReplay(new OsuReplayFrame(h.StartTime + j, new Vector2(pos.X, pos.Y), action));
-                }
+                    for (double j = FrameDelay; j < slider.Duration; j += FrameDelay)
+                    {
+                        Vector2 pos = slider.StackedPositionAt(j / slider.Duration);
+                        AddFrameToReplay(new OsuReplayFrame(h.StartTime + j, new Vector2(pos.X, pos.Y), action));
+                    }
 
-                AddFrameToReplay(new OsuReplayFrame(s.EndTime, new Vector2(s.StackedEndPosition.X, s.StackedEndPosition.Y), action));
+                    AddFrameToReplay(new OsuReplayFrame(slider.EndTime, new Vector2(slider.StackedEndPosition.X, slider.StackedEndPosition.Y), action));
+                    break;
+                }
             }
 
             // We only want to let go of our button if we are at the end of the current replay. Otherwise something is still going on after us so we need to keep the button pressed!

osu.Game.Rulesets.Osu/Replays/OsuReplayInputHandler.cs

@@ -3,7 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Input;
+using osu.Framework.Input.StateChanges;
 using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Replays;
 using OpenTK;

osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs

@@ -12,6 +12,7 @@ using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Input;
+using osu.Framework.Input.States;
 using osu.Framework.Timing;
 using OpenTK;
 using OpenTK.Graphics;

osu.Game.Rulesets.Osu/UI/Cursor/GameplayCursor.cs

@@ -39,6 +39,11 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
 
         private int downCount;
 
+        private const float pressed_scale = 1.2f;
+        private const float released_scale = 1f;
+
+        private float targetScale => downCount > 0 ? pressed_scale : released_scale;
+
         public bool OnPressed(OsuAction action)
         {
             switch (action)
@@ -46,7 +51,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                 case OsuAction.LeftButton:
                 case OsuAction.RightButton:
                     downCount++;
-                    ActiveCursor.ScaleTo(1).ScaleTo(1.2f, 100, Easing.OutQuad);
+                    ActiveCursor.ScaleTo(released_scale).ScaleTo(targetScale, 100, Easing.OutQuad);
                     break;
             }
 
@@ -60,7 +65,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                 case OsuAction.LeftButton:
                 case OsuAction.RightButton:
                     if (--downCount == 0)
-                        ActiveCursor.ScaleTo(1, 200, Easing.OutQuad);
+                        ActiveCursor.ScaleTo(targetScale, 200, Easing.OutQuad);
                     break;
             }
 
@@ -72,13 +77,13 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
         protected override void PopIn()
         {
             fadeContainer.FadeTo(1, 300, Easing.OutQuint);
-            ActiveCursor.ScaleTo(1, 400, Easing.OutQuint);
+            ActiveCursor.ScaleTo(targetScale, 400, Easing.OutQuint);
         }
 
         protected override void PopOut()
         {
             fadeContainer.FadeTo(0.05f, 450, Easing.OutQuint);
-            ActiveCursor.ScaleTo(0.8f, 450, Easing.OutQuint);
+            ActiveCursor.ScaleTo(targetScale * 0.8f, 450, Easing.OutQuint);
         }
 
         public class OsuCursor : Container

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

@@ -20,8 +20,6 @@ namespace osu.Game.Rulesets.Osu.UI
         private readonly JudgementContainer<DrawableOsuJudgement> judgementLayer;
         private readonly ConnectionRenderer<OsuHitObject> connectionLayer;
 
-        protected virtual bool DisplayJudgements => true;
-
         public static readonly Vector2 BASE_SIZE = new Vector2(512, 384);
 
         public OsuPlayfield()

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Linq;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Input;
 using OpenTK;
@@ -33,19 +34,30 @@ namespace osu.Game.Rulesets.Osu.UI
 
         protected override DrawableHitObject<OsuHitObject> GetVisualRepresentation(OsuHitObject h)
         {
-            if (h is HitCircle circle)
-                return new DrawableHitCircle(circle);
+            switch (h)
+            {
+                case HitCircle circle:
+                    return new DrawableHitCircle(circle);
+                case Slider slider:
+                    return new DrawableSlider(slider);
+                case Spinner spinner:
+                    return new DrawableSpinner(spinner);
+            }
 
-            if (h is Slider slider)
-                return new DrawableSlider(slider);
-
-            if (h is Spinner spinner)
-                return new DrawableSpinner(spinner);
             return null;
         }
 
         protected override ReplayInputHandler CreateReplayInputHandler(Replay replay) => new OsuReplayInputHandler(replay);
 
+        public override double GameplayStartTime
+        {
+            get
+            {
+                var first = (OsuHitObject)Objects.First();
+                return first.StartTime - first.TimePreempt;
+            }
+        }
+
         protected override Vector2 GetAspectAdjustedSize()
         {
             var aspectSize = DrawSize.X * 0.75f < DrawSize.Y ? new Vector2(DrawSize.X, DrawSize.X * 0.75f) : new Vector2(DrawSize.Y * 4f / 3f, DrawSize.Y);

osu.Game.Rulesets.Taiko/Replays/TaikoFramedReplayInputHandler.cs

@@ -4,7 +4,7 @@
 using osu.Game.Rulesets.Replays;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Input;
+using osu.Framework.Input.StateChanges;
 
 namespace osu.Game.Rulesets.Taiko.Replays
 {

osu.Game.Rulesets.Taiko/Scoring/TaikoScoreProcessor.cs

@@ -80,30 +80,31 @@ namespace osu.Game.Rulesets.Taiko.Scoring
 
             foreach (var obj in beatmap.HitObjects)
             {
-                if (obj is Hit)
+                switch (obj)
                 {
-                    AddJudgement(new TaikoJudgement { Result = HitResult.Great });
-                    if (obj.IsStrong)
-                        AddJudgement(new TaikoStrongHitJudgement());
-                }
-                else if (obj is DrumRoll)
-                {
-                    for (int i = 0; i < ((DrumRoll)obj).NestedHitObjects.OfType<DrumRollTick>().Count(); i++)
-                    {
-                        AddJudgement(new TaikoDrumRollTickJudgement { Result = HitResult.Great });
+                    case Hit _:
+                        AddJudgement(new TaikoJudgement { Result = HitResult.Great });
+                        if (obj.IsStrong)
+                            AddJudgement(new TaikoStrongHitJudgement());
+                        break;
+                    case DrumRoll drumRoll:
+                        var count = drumRoll.NestedHitObjects.OfType<DrumRollTick>().Count();
+                        for (int i = 0; i < count; i++)
+                        {
+                            AddJudgement(new TaikoDrumRollTickJudgement { Result = HitResult.Great });
+
+                            if (obj.IsStrong)
+                                AddJudgement(new TaikoStrongHitJudgement());
+                        }
+
+                        AddJudgement(new TaikoJudgement { Result = HitResult.Great });
 
                         if (obj.IsStrong)
                             AddJudgement(new TaikoStrongHitJudgement());
-                    }
-
-                    AddJudgement(new TaikoJudgement { Result = HitResult.Great });
-
-                    if (obj.IsStrong)
-                        AddJudgement(new TaikoStrongHitJudgement());
-                }
-                else if (obj is Swell)
-                {
-                    AddJudgement(new TaikoJudgement { Result = HitResult.Great });
+                        break;
+                    case Swell _:
+                        AddJudgement(new TaikoJudgement { Result = HitResult.Great });
+                        break;
                 }
             }
         }

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

@@ -58,8 +58,9 @@ namespace osu.Game.Rulesets.Taiko.UI
         private readonly Box background;
 
         public TaikoPlayfield(ControlPointInfo controlPoints)
-            : base(ScrollingDirection.Left)
         {
+            Direction.Value = ScrollingDirection.Left;
+
             AddRangeInternal(new Drawable[]
             {
                 backgroundContainer = new Container
@@ -212,17 +213,22 @@ namespace osu.Game.Rulesets.Taiko.UI
 
             base.Add(h);
 
-            var barline = h as DrawableBarLine;
-            if (barline != null)
-                barlineContainer.Add(barline.CreateProxy());
-
-            var taikoObject = h as DrawableTaikoHitObject;
-            if (taikoObject != null)
-                topLevelHitContainer.Add(taikoObject.CreateProxiedContent());
+            switch (h)
+            {
+                case DrawableBarLine barline:
+                    barlineContainer.Add(barline.CreateProxy());
+                    break;
+                case DrawableTaikoHitObject taikoObject:
+                    topLevelHitContainer.Add(taikoObject.CreateProxiedContent());
+                    break;
+            }
         }
 
         internal void OnJudgement(DrawableHitObject judgedObject, Judgement judgement)
         {
+            if (!DisplayJudgements)
+                return;
+
             if (judgedObject.DisplayJudgement && judgementContainer.FirstOrDefault(j => j.JudgedObject == judgedObject) == null)
             {
                 judgementContainer.Add(new DrawableTaikoJudgement(judgement, judgedObject)

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

@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Taiko.UI
         private void loadBarLines()
         {
             TaikoHitObject lastObject = Beatmap.HitObjects[Beatmap.HitObjects.Count - 1];
-            double lastHitTime = 1 + (lastObject as IHasEndTime)?.EndTime ?? lastObject.StartTime;
+            double lastHitTime = 1 + ((lastObject as IHasEndTime)?.EndTime ?? lastObject.StartTime);
 
             var timingPoints = Beatmap.ControlPointInfo.TimingPoints.ToList();
 
@@ -98,32 +98,22 @@ namespace osu.Game.Rulesets.Taiko.UI
 
         protected override DrawableHitObject<TaikoHitObject> GetVisualRepresentation(TaikoHitObject h)
         {
-            var centreHit = h as CentreHit;
-            if (centreHit != null)
+            switch (h)
             {
-                if (h.IsStrong)
+                case CentreHit centreHit when h.IsStrong:
                     return new DrawableCentreHitStrong(centreHit);
-                return new DrawableCentreHit(centreHit);
-            }
-
-            var rimHit = h as RimHit;
-            if (rimHit != null)
-            {
-                if (h.IsStrong)
+                case CentreHit centreHit:
+                    return new DrawableCentreHit(centreHit);
+                case RimHit rimHit when h.IsStrong:
                     return new DrawableRimHitStrong(rimHit);
-                return new DrawableRimHit(rimHit);
+                case RimHit rimHit:
+                    return new DrawableRimHit(rimHit);
+                case DrumRoll drumRoll:
+                    return new DrawableDrumRoll(drumRoll);
+                case Swell swell:
+                    return new DrawableSwell(swell);
             }
 
-            var drumRoll = h as DrumRoll;
-            if (drumRoll != null)
-            {
-                return new DrawableDrumRoll(drumRoll);
-            }
-
-            var swell = h as Swell;
-            if (swell != null)
-                return new DrawableSwell(swell);
-
             return null;
         }
 

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

@@ -11,6 +11,7 @@ using osu.Game.Audio;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.Beatmaps.Timing;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Skinning;
 
 namespace osu.Game.Tests.Beatmaps.Formats
@@ -211,5 +212,58 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.IsTrue(hitObjects[1].Samples.Any(s => s.Name == SampleInfo.HIT_CLAP));
             }
         }
+
+        [Test]
+        public void TestDecodeControlPointCustomSampleBank()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+            using (var resStream = Resource.OpenResource("controlpoint-custom-samplebank.osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var hitObjects = decoder.Decode(stream).HitObjects;
+
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[0]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[1]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal2", getTestableSampleInfo(hitObjects[2]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[3]).LookupNames.First());
+            }
+
+            SampleInfo getTestableSampleInfo(HitObject hitObject) => hitObject.SampleControlPoint.ApplyTo(hitObject.Samples[0]);
+        }
+
+        [Test]
+        public void TestDecodeHitObjectCustomSampleBank()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+            using (var resStream = Resource.OpenResource("hitobject-custom-samplebank.osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var hitObjects = decoder.Decode(stream).HitObjects;
+
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[0]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal2", getTestableSampleInfo(hitObjects[1]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal3", getTestableSampleInfo(hitObjects[2]).LookupNames.First());
+            }
+
+            SampleInfo getTestableSampleInfo(HitObject hitObject) => hitObject.SampleControlPoint.ApplyTo(hitObject.Samples[0]);
+        }
+
+        [Test]
+        public void TestDecodeHitObjectFileSamples()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+            using (var resStream = Resource.OpenResource("hitobject-file-samples.osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var hitObjects = decoder.Decode(stream).HitObjects;
+
+                Assert.AreEqual("hit_1.wav", getTestableSampleInfo(hitObjects[0]).LookupNames.First());
+                Assert.AreEqual("hit_2.wav", getTestableSampleInfo(hitObjects[1]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal2", getTestableSampleInfo(hitObjects[2]).LookupNames.First());
+                Assert.AreEqual("hit_1.wav", getTestableSampleInfo(hitObjects[3]).LookupNames.First());
+            }
+
+            SampleInfo getTestableSampleInfo(HitObject hitObject) => hitObject.SampleControlPoint.ApplyTo(hitObject.Samples[0]);
+        }
     }
 }

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

@@ -118,7 +118,11 @@ namespace osu.Game.Tests.Beatmaps.Formats
         public void TestParity(string beatmap)
         {
             var legacy = decode(beatmap, out Beatmap json);
-            json.WithDeepEqual(legacy).IgnoreProperty(r => r.DeclaringType == typeof(HitWindows)).Assert();
+            json.WithDeepEqual(legacy)
+                .IgnoreProperty(r => r.DeclaringType == typeof(HitWindows)
+                                     // Todo: CustomSampleBank shouldn't exist going forward, we need a conversion mechanism
+                                     || r.Name == nameof(LegacyDecoder<Beatmap>.LegacySampleControlPoint.CustomSampleBank))
+                .Assert();
         }
 
         /// <summary>

osu.Game.Tests/Resources/controlpoint-custom-samplebank.osu

@@ -0,0 +1,16 @@
+osu file format v14
+
+[General]
+SampleSet: Normal
+
+[TimingPoints]
+2170,468.75,4,1,0,40,1,0
+2638,-100,4,1,1,40,0,0
+3107,-100,4,1,2,40,0,0
+3576,-100,4,1,0,40,0,0
+
+[HitObjects]
+255,193,2170,1,0,0:0:0:0:
+256,191,2638,5,0,0:0:0:0:
+255,193,3107,1,0,0:0:0:0:
+256,191,3576,1,0,0:0:0:0:

osu.Game.Tests/Resources/hitobject-custom-samplebank.osu

@@ -0,0 +1,13 @@
+osu file format v14
+
+[General]
+SampleSet: Normal
+
+[TimingPoints]
+2170,468.75,4,1,0,40,1,0
+3107,-100,4,1,2,40,0,0
+
+[HitObjects]
+255,193,2170,1,0,0:0:0:0:
+256,191,3107,5,0,0:0:0:0:
+255,193,4000,1,0,0:0:3:70:

osu.Game.Tests/Resources/hitobject-file-samples.osu

@@ -0,0 +1,16 @@
+osu file format v14
+
+[General]
+SampleSet: Normal
+
+[TimingPoints]
+2170,468.75,4,1,0,40,1,0
+2638,-100,4,1,1,40,0,0
+3107,-100,4,1,2,40,0,0
+3576,-100,4,1,0,40,0,0
+
+[HitObjects]
+255,193,2170,1,0,0:0:0:0:hit_1.wav
+256,191,2638,5,0,0:0:0:0:hit_2.wav
+255,193,3107,1,0,0:0:0:0:
+256,191,3576,1,0,0:0:0:0:hit_1.wav

osu.Game.Tests/Visual/TestCaseBeatmapCarousel.cs

@@ -530,7 +530,7 @@ namespace osu.Game.Tests.Visual
         {
             public new List<DrawableCarouselItem> Items => base.Items;
 
-            public bool PendingFilterTask => FilterTask != null;
+            public bool PendingFilterTask => PendingFilter != null;
         }
     }
 }

osu.Game.Tests/Visual/TestCaseBeatmapInfoWedge.cs

@@ -65,17 +65,19 @@ namespace osu.Game.Tests.Visual
 
             foreach (var rulesetInfo in rulesets.AvailableRulesets)
             {
-                var ruleset = rulesetInfo.CreateInstance();
+                var instance = rulesetInfo.CreateInstance();
                 var testBeatmap = createTestBeatmap(rulesetInfo);
 
                 beatmaps.Add(testBeatmap);
 
+                AddStep("set ruleset", () => Ruleset.Value = rulesetInfo);
+
                 selectBeatmap(testBeatmap);
 
-                testBeatmapLabels(ruleset);
+                testBeatmapLabels(instance);
 
                 // TODO: adjust cases once more info is shown for other gamemodes
-                switch (ruleset)
+                switch (instance)
                 {
                     case OsuRuleset _:
                         testInfoLabels(5);
@@ -108,8 +110,8 @@ namespace osu.Game.Tests.Visual
 
         private void testInfoLabels(int expectedCount)
         {
-            AddAssert("check infolabels exists", () => infoWedge.Info.InfoLabelContainer.Children.Any());
-            AddAssert("check infolabels count", () => infoWedge.Info.InfoLabelContainer.Children.Count == expectedCount);
+            AddAssert("check info labels exists", () => infoWedge.Info.InfoLabelContainer.Children.Any());
+            AddAssert("check info labels count", () => infoWedge.Info.InfoLabelContainer.Children.Count == expectedCount);
         }
 
         private void testNullBeatmap()
@@ -119,7 +121,7 @@ namespace osu.Game.Tests.Visual
             AddAssert("check default title", () => infoWedge.Info.TitleLabel.Text == Beatmap.Default.BeatmapInfo.Metadata.Title);
             AddAssert("check default artist", () => infoWedge.Info.ArtistLabel.Text == Beatmap.Default.BeatmapInfo.Metadata.Artist);
             AddAssert("check empty author", () => !infoWedge.Info.MapperContainer.Children.Any());
-            AddAssert("check no infolabels", () => !infoWedge.Info.InfoLabelContainer.Children.Any());
+            AddAssert("check no info labels", () => !infoWedge.Info.InfoLabelContainer.Children.Any());
         }
 
         private void selectBeatmap(IBeatmap b)

osu.Game.Tests/Visual/TestCaseButtonSystem.cs

@@ -1,6 +1,9 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -13,6 +16,13 @@ namespace osu.Game.Tests.Visual
     [TestFixture]
     public class TestCaseButtonSystem : OsuTestCase
     {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(ButtonSystem),
+            typeof(ButtonArea),
+            typeof(Button)
+        };
+
         public TestCaseButtonSystem()
         {
             OsuLogo logo;
@@ -30,6 +40,9 @@ namespace osu.Game.Tests.Visual
             };
 
             buttons.SetOsuLogo(logo);
+
+            foreach (var s in Enum.GetValues(typeof(ButtonSystemState)).OfType<ButtonSystemState>().Skip(1))
+                AddStep($"State to {s}", () => buttons.State = s);
         }
     }
 }

osu.Game.Tests/Visual/TestCaseCursors.cs

@@ -7,7 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Input;
+using osu.Framework.Input.States;
 using osu.Framework.MathUtils;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.Sprites;

osu.Game.Tests/Visual/TestCaseDisclaimer.cs

@@ -0,0 +1,28 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Screens.Menu;
+using OpenTK.Graphics;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseDisclaimer : OsuTestCase
+    {
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Children = new Drawable[]
+            {
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = Color4.Black,
+                },
+                new Disclaimer()
+            };
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseGameplayMenuOverlay.cs

@@ -8,7 +8,7 @@ using System.Linq;
 using OpenTK.Input;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Input;
+using osu.Framework.Input.EventArgs;
 using osu.Framework.Logging;
 using osu.Game.Screens.Play;
 

osu.Game.Tests/Visual/TestCaseIconButton.cs

@@ -25,11 +25,7 @@ namespace osu.Game.Tests.Visual
                 Children = new[]
                 {
                     new NamedIconButton("No change", new IconButton()),
-                    new NamedIconButton("Background colours", new IconButton
-                    {
-                        FlashColour = Color4.DarkGreen,
-                        HoverColour = Color4.Green,
-                    }),
+                    new NamedIconButton("Background colours", new ColouredIconButton()),
                     new NamedIconButton("Full-width", new IconButton { ButtonSize = new Vector2(200, 30) }),
                     new NamedIconButton("Unchanging size", new IconButton(), false),
                     new NamedIconButton("Icon colours", new IconButton
@@ -41,6 +37,15 @@ namespace osu.Game.Tests.Visual
             };
         }
 
+        private class ColouredIconButton : IconButton
+        {
+            public ColouredIconButton()
+            {
+                FlashColour = Color4.DarkGreen;
+                HoverColour = Color4.Green;
+            }
+        }
+
         private class NamedIconButton : Container
         {
             public NamedIconButton(string name, IconButton button, bool allowSizeChange = true)

osu.Game.Tests/Visual/TestCaseKeyCounter.cs

@@ -18,7 +18,6 @@ namespace osu.Game.Tests.Visual
             {
                 Origin = Anchor.Centre,
                 Anchor = Anchor.Centre,
-                IsCounting = true,
                 Children = new KeyCounter[]
                 {
                     new KeyCounterKeyboard(Key.Z),

osu.Game.Tests/Visual/TestCaseLabelledTextBox.cs

@@ -0,0 +1,41 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Screens.Edit.Screens.Setup.Components.LabelledComponents;
+using System;
+using System.Collections.Generic;
+
+namespace osu.Game.Tests.Visual
+{
+    [TestFixture]
+    public class TestCaseLabelledTextBox : OsuTestCase
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(LabelledTextBox),
+        };
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Child = new Container
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.X,
+                Padding = new MarginPadding { Left = 150, Right = 150 },
+                Child = new LabelledTextBox
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    LabelText = "Testing text",
+                    PlaceholderText = "This is definitely working as intended",
+                }
+            };
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseMods.cs

@@ -77,7 +77,7 @@ namespace osu.Game.Tests.Visual
             foreach (var rulesetInfo in rulesets.AvailableRulesets)
             {
                 Ruleset ruleset = rulesetInfo.CreateInstance();
-                AddStep($"switch to {ruleset.Description}", () => modSelect.Ruleset.Value = rulesetInfo);
+                AddStep($"switch to {ruleset.Description}", () => Ruleset.Value = rulesetInfo);
 
                 switch (ruleset)
                 {
@@ -114,7 +114,7 @@ namespace osu.Game.Tests.Visual
             testMultiplierTextColour(noFailMod, modSelect.LowMultiplierColour);
             testMultiplierTextColour(hiddenMod, modSelect.HighMultiplierColour);
 
-            testUnimplmentedMod(autoPilotMod);
+            testUnimplementedMod(autoPilotMod);
         }
 
         private void testManiaMods(ManiaRuleset ruleset)
@@ -154,7 +154,7 @@ namespace osu.Game.Tests.Visual
                 checkNotSelected(mod);
         }
 
-        private void testUnimplmentedMod(Mod mod)
+        private void testUnimplementedMod(Mod mod)
         {
             selectNext(mod);
             checkNotSelected(mod);

osu.Game.Tests/Visual/TestCaseOnScreenDisplay.cs

@@ -88,7 +88,7 @@ namespace osu.Game.Tests.Visual
 
         private class TestOnScreenDisplay : OnScreenDisplay
         {
-            protected override void Display(Drawable toDisplay) => toDisplay.FadeIn().ResizeHeightTo(110);
+            protected override void DisplayTemporarily(Drawable toDisplay) => toDisplay.FadeIn().ResizeHeightTo(110);
         }
     }
 }

osu.Game.Tests/Visual/TestCaseOsuGame.cs

@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Timing;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
 using OpenTK.Graphics;
@@ -23,19 +22,15 @@ namespace osu.Game.Tests.Visual
 
         public TestCaseOsuGame()
         {
-            var rateAdjustClock = new StopwatchClock(true);
-            var framedClock = new FramedClock(rateAdjustClock);
-            framedClock.ProcessFrame();
-
-            Add(new Box
+            Children = new Drawable[]
             {
-                RelativeSizeAxes = Axes.Both,
-                Colour = Color4.Black,
-            });
-
-            Add(new Loader());
-
-            AddSliderStep("Playback speed", 0.0, 2.0, 1, v => rateAdjustClock.Rate = v);
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = Color4.Black,
+                },
+                new Loader()
+            };
         }
     }
 }

osu.Game.Tests/Visual/TestCasePlaySongSelect.cs

@@ -16,7 +16,6 @@ using osu.Game.Rulesets;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Carousel;
 using osu.Game.Screens.Select.Filter;
-using osu.Game.Tests.Platform;
 
 namespace osu.Game.Tests.Visual
 {
@@ -28,6 +27,7 @@ namespace osu.Game.Tests.Visual
         private RulesetStore rulesets;
 
         private WorkingBeatmap defaultBeatmap;
+        private DatabaseContextFactory factory;
 
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {
@@ -54,58 +54,63 @@ namespace osu.Game.Tests.Visual
             public new BeatmapCarousel Carousel => base.Carousel;
         }
 
+        private TestSongSelect songSelect;
+
+        protected override void Dispose(bool isDisposing)
+        {
+            factory.ResetDatabase();
+            base.Dispose(isDisposing);
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {
-            TestSongSelect songSelect = null;
+            factory = new DatabaseContextFactory(LocalStorage);
+            factory.ResetDatabase();
 
-            var storage = new TestStorage(@"TestCasePlaySongSelect");
+            using (var usage = factory.Get())
+                usage.Migrate();
 
-            // this is by no means clean. should be replacing inside of OsuGameBase somehow.
-            IDatabaseContextFactory factory = new SingletonContextFactory(new OsuDbContext());
+            factory.ResetDatabase();
+
+            using (var usage = factory.Get())
+                usage.Migrate();
 
             Dependencies.Cache(rulesets = new RulesetStore(factory));
-            Dependencies.Cache(manager = new BeatmapManager(storage, factory, rulesets, null, null)
+            Dependencies.Cache(manager = new BeatmapManager(LocalStorage, factory, rulesets, null, null)
             {
                 DefaultBeatmap = defaultBeatmap = Beatmap.Default
             });
 
-            void loadNewSongSelect(bool deleteMaps = false) => AddStep("reload song select", () =>
-            {
-                if (deleteMaps)
-                {
-                    manager.Delete(manager.GetAllUsableBeatmapSets());
-                    Beatmap.SetDefault();
-                }
+            Beatmap.SetDefault();
+        }
 
-                if (songSelect != null)
-                {
-                    Remove(songSelect);
-                    songSelect.Dispose();
-                }
-
-                Add(songSelect = new TestSongSelect());
-            });
-
-            loadNewSongSelect(true);
-
-            AddWaitStep(3);
+        [SetUp]
+        public virtual void SetUp()
+        {
+            manager?.Delete(manager.GetAllUsableBeatmapSets());
+            Child = songSelect = new TestSongSelect();
+        }
 
+        [Test]
+        public void TestDummy()
+        {
             AddAssert("dummy selected", () => songSelect.CurrentBeatmap == defaultBeatmap);
 
             AddAssert("dummy shown on wedge", () => songSelect.CurrentBeatmapDetailsBeatmap == defaultBeatmap);
 
-            AddStep("import test maps", () =>
-            {
-                for (int i = 0; i < 100; i += 10)
-                    manager.Import(createTestBeatmapSet(i));
-            });
-
+            addManyTestMaps();
             AddWaitStep(3);
+
             AddAssert("random map selected", () => songSelect.CurrentBeatmap != defaultBeatmap);
+        }
 
-            loadNewSongSelect();
+        [Test]
+        public void TestSorting()
+        {
+            addManyTestMaps();
             AddWaitStep(3);
+
             AddAssert("random map selected", () => songSelect.CurrentBeatmap != defaultBeatmap);
 
             AddStep(@"Sort by Artist", delegate { songSelect.FilterControl.Sort = SortMode.Artist; });
@@ -114,55 +119,84 @@ namespace osu.Game.Tests.Visual
             AddStep(@"Sort by Difficulty", delegate { songSelect.FilterControl.Sort = SortMode.Difficulty; });
         }
 
-        private BeatmapSetInfo createTestBeatmapSet(int i)
+        [Test]
+        [Ignore("needs fixing")]
+        public void ImportUnderDifferentRuleset()
         {
+            changeRuleset(2);
+            importForRuleset(0);
+            AddUntilStep(() => songSelect.Carousel.SelectedBeatmap == null, "no selection");
+        }
+
+        [Test]
+        public void ImportUnderCurrentRuleset()
+        {
+            changeRuleset(2);
+            importForRuleset(2);
+            importForRuleset(1);
+            AddUntilStep(() => songSelect.Carousel.SelectedBeatmap.RulesetID == 2, "has selection");
+
+            changeRuleset(1);
+            AddUntilStep(() => songSelect.Carousel.SelectedBeatmap.RulesetID == 1, "has selection");
+
+            changeRuleset(0);
+            AddUntilStep(() => songSelect.Carousel.SelectedBeatmap == null, "no selection");
+        }
+
+        private void importForRuleset(int id) => AddStep($"import test map for ruleset {id}", () => manager.Import(createTestBeatmapSet(getImportId(), rulesets.AvailableRulesets.Where(r => r.ID == id).ToArray())));
+
+        private static int importId;
+        private int getImportId() => ++importId;
+
+        private void changeRuleset(int id) => AddStep($"change ruleset to {id}", () => Ruleset.Value = rulesets.AvailableRulesets.First(r => r.ID == id));
+
+        private void addManyTestMaps()
+        {
+            AddStep("import test maps", () =>
+            {
+                var usableRulesets = rulesets.AvailableRulesets.Where(r => r.ID != 2).ToArray();
+
+                for (int i = 0; i < 100; i += 10)
+                    manager.Import(createTestBeatmapSet(i, usableRulesets));
+            });
+        }
+
+        private BeatmapSetInfo createTestBeatmapSet(int setId, RulesetInfo[] rulesets)
+        {
+            int j = 0;
+            RulesetInfo getRuleset() => rulesets[j++ % rulesets.Length];
+
+            var beatmaps = new List<BeatmapInfo>();
+
+            for (int i = 0; i < 6; i++)
+            {
+                int beatmapId = setId * 10 + i;
+
+                beatmaps.Add(new BeatmapInfo
+                {
+                    Ruleset = getRuleset(),
+                    OnlineBeatmapID = beatmapId,
+                    Path = "normal.osu",
+                    Version = $"{beatmapId}",
+                    BaseDifficulty = new BeatmapDifficulty
+                    {
+                        OverallDifficulty = 3.5f,
+                    }
+                });
+            }
+
             return new BeatmapSetInfo
             {
-                OnlineBeatmapSetID = 1234 + i,
+                OnlineBeatmapSetID = setId,
                 Hash = new MemoryStream(Encoding.UTF8.GetBytes(Guid.NewGuid().ToString())).ComputeMD5Hash(),
                 Metadata = new BeatmapMetadata
                 {
                     // Create random metadata, then we can check if sorting works based on these
-                    Artist = "MONACA " + RNG.Next(0, 9),
-                    Title = "Black Song " + RNG.Next(0, 9),
+                    Artist = "Some Artist " + RNG.Next(0, 9),
+                    Title = $"Some Song (set id {setId})",
                     AuthorString = "Some Guy " + RNG.Next(0, 9),
                 },
-                Beatmaps = new List<BeatmapInfo>(new[]
-                {
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = 1234 + i,
-                        Ruleset = rulesets.AvailableRulesets.First(),
-                        Path = "normal.osu",
-                        Version = "Normal",
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 3.5f,
-                        }
-                    },
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = 1235 + i,
-                        Ruleset = rulesets.AvailableRulesets.First(),
-                        Path = "hard.osu",
-                        Version = "Hard",
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 5,
-                        }
-                    },
-                    new BeatmapInfo
-                    {
-                        OnlineBeatmapID = 1236 + i,
-                        Ruleset = rulesets.AvailableRulesets.First(),
-                        Path = "insane.osu",
-                        Version = "Insane",
-                        BaseDifficulty = new BeatmapDifficulty
-                        {
-                            OverallDifficulty = 7,
-                        }
-                    },
-                }),
+                Beatmaps = beatmaps
             };
         }
     }

osu.Game.Tests/Visual/TestCasePreviewTrackManager.cs

@@ -14,9 +14,9 @@ namespace osu.Game.Tests.Visual
     {
         private readonly PreviewTrackManager trackManager = new TestPreviewTrackManager();
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs(trackManager);
             dependencies.CacheAs<IPreviewTrackOwner>(this);
             return dependencies;
@@ -101,9 +101,9 @@ namespace osu.Game.Tests.Visual
                 AddInternal(track);
             }
 
-            protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+            protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
             {
-                var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+                var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
                 dependencies.CacheAs<IPreviewTrackOwner>(this);
                 return dependencies;
             }

osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs

@@ -117,7 +117,6 @@ namespace osu.Game.Tests.Visual
             public new readonly ScrollingDirection Direction;
 
             public TestPlayfield(ScrollingDirection direction)
-                : base(direction)
             {
                 Direction = direction;
 

osu.Game.Tests/Visual/TestCaseToolbar.cs

@@ -16,8 +16,8 @@ namespace osu.Game.Tests.Visual
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {
             typeof(ToolbarButton),
-            typeof(ToolbarModeSelector),
-            typeof(ToolbarModeButton),
+            typeof(ToolbarRulesetSelector),
+            typeof(ToolbarRulesetButton),
             typeof(ToolbarNotificationButton),
         };
 

osu.Game.Tests/Visual/TestCaseUserProfile.cs

@@ -53,7 +53,6 @@ namespace osu.Game.Tests.Visual
                 CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c1.jpg",
                 JoinDate = DateTimeOffset.Now.AddDays(-1),
                 LastVisit = DateTimeOffset.Now,
-                Age = 1,
                 ProfileOrder = new[] { "me" },
                 Statistics = new UserStatistics
                 {

osu.Game/Audio/SampleInfo.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Collections.Generic;
 
 namespace osu.Game.Audio
 {
@@ -28,9 +29,37 @@ namespace osu.Game.Audio
         /// </summary>
         public string Name;
 
+        /// <summary>
+        /// An optional suffix to provide priority lookup. Falls back to non-suffixed <see cref="Name"/>.
+        /// </summary>
+        public string Suffix;
+
         /// <summary>
         /// The sample volume.
         /// </summary>
         public int Volume;
+
+        /// <summary>
+        /// Retrieve all possible filenames that can be used as a source, returned in order of preference (highest first).
+        /// </summary>
+        public virtual IEnumerable<string> LookupNames
+        {
+            get
+            {
+                if (!string.IsNullOrEmpty(Namespace))
+                {
+                    if (!string.IsNullOrEmpty(Suffix))
+                        yield return $"{Namespace}/{Bank}-{Name}{Suffix}";
+                    yield return $"{Namespace}/{Bank}-{Name}";
+                }
+
+                // check non-namespace as a fallback even when we have a namespace
+                if (!string.IsNullOrEmpty(Suffix))
+                    yield return $"{Bank}-{Name}{Suffix}";
+                yield return $"{Bank}-{Name}";
+            }
+        }
+
+        public SampleInfo Clone() => (SampleInfo)MemberwiseClone();
     }
 }

osu.Game/Beatmaps/BeatmapManager.cs

@@ -45,6 +45,16 @@ namespace osu.Game.Beatmaps
         /// </summary>
         public event Action<DownloadBeatmapSetRequest> BeatmapDownloadBegan;
 
+        /// <summary>
+        /// Fired when a beatmap download is interrupted, due to user cancellation or other failures.
+        /// </summary>
+        public event Action<DownloadBeatmapSetRequest> BeatmapDownloadFailed;
+
+        /// <summary>
+        /// Fired when a beatmap load is requested (into the interactive game UI).
+        /// </summary>
+        public Action<BeatmapSetInfo> PresentBeatmap;
+
         /// <summary>
         /// A default representation of a WorkingBeatmap to use when no beatmap is available.
         /// </summary>
@@ -79,33 +89,46 @@ namespace osu.Game.Beatmaps
             this.audioManager = audioManager;
         }
 
-        protected override void Populate(BeatmapSetInfo model, ArchiveReader archive)
+        protected override void Populate(BeatmapSetInfo beatmapSet, ArchiveReader archive)
         {
-            model.Beatmaps = createBeatmapDifficulties(archive);
+            if (archive != null)
+                beatmapSet.Beatmaps = createBeatmapDifficulties(archive);
 
-            foreach (BeatmapInfo b in model.Beatmaps)
+            foreach (BeatmapInfo b in beatmapSet.Beatmaps)
             {
                 // remove metadata from difficulties where it matches the set
-                if (model.Metadata.Equals(b.Metadata))
+                if (beatmapSet.Metadata.Equals(b.Metadata))
                     b.Metadata = null;
 
-                // by setting the model here, we can update the noline set id below.
-                b.BeatmapSet = model;
-
-                fetchAndPopulateOnlineIDs(b);
+                b.BeatmapSet = beatmapSet;
             }
 
             // check if a set already exists with the same online id, delete if it does.
-            if (model.OnlineBeatmapSetID != null)
+            if (beatmapSet.OnlineBeatmapSetID != null)
             {
-                var existingOnlineId = beatmaps.ConsumableItems.FirstOrDefault(b => b.OnlineBeatmapSetID == model.OnlineBeatmapSetID);
+                var existingOnlineId = beatmaps.ConsumableItems.FirstOrDefault(b => b.OnlineBeatmapSetID == beatmapSet.OnlineBeatmapSetID);
                 if (existingOnlineId != null)
                 {
                     Delete(existingOnlineId);
                     beatmaps.PurgeDeletable(s => s.ID == existingOnlineId.ID);
-                    Logger.Log($"Found existing beatmap set with same OnlineBeatmapSetID ({model.OnlineBeatmapSetID}). It has been purged.", LoggingTarget.Database);
+                    Logger.Log($"Found existing beatmap set with same OnlineBeatmapSetID ({beatmapSet.OnlineBeatmapSetID}). It has been purged.", LoggingTarget.Database);
                 }
             }
+
+            validateOnlineIds(beatmapSet.Beatmaps);
+
+            foreach (BeatmapInfo b in beatmapSet.Beatmaps)
+                fetchAndPopulateOnlineIDs(b, beatmapSet.Beatmaps);
+        }
+
+        private void validateOnlineIds(List<BeatmapInfo> beatmaps)
+        {
+            var beatmapIds = beatmaps.Where(b => b.OnlineBeatmapID.HasValue).Select(b => b.OnlineBeatmapID).ToList();
+
+            // ensure all IDs are unique in this set and none match existing IDs in the local beatmap store.
+            if (beatmapIds.GroupBy(b => b).Any(g => g.Count() > 1) || QueryBeatmaps(b => beatmapIds.Contains(b.OnlineBeatmapID)).Any())
+                // remove all online IDs if any problems were found.
+                beatmaps.ForEach(b => b.OnlineBeatmapID = null);
         }
 
         protected override BeatmapSetInfo CheckForExisting(BeatmapSetInfo model)
@@ -143,7 +166,7 @@ namespace osu.Game.Beatmaps
                 return;
             }
 
-            var downloadNotification = new ProgressNotification
+            var downloadNotification = new DownloadNotification
             {
                 CompletionText = $"Imported {beatmapSetInfo.Metadata.Artist} - {beatmapSetInfo.Metadata.Title}!",
                 Text = $"Downloading {beatmapSetInfo.Metadata.Artist} - {beatmapSetInfo.Metadata.Title}",
@@ -163,18 +186,28 @@ namespace osu.Game.Beatmaps
 
                 Task.Factory.StartNew(() =>
                 {
+                    BeatmapSetInfo importedBeatmap;
+
                     // This gets scheduled back to the update thread, but we want the import to run in the background.
                     using (var stream = new MemoryStream(data))
                     using (var archive = new ZipArchiveReader(stream, beatmapSetInfo.ToString()))
-                        Import(archive);
+                        importedBeatmap = Import(archive);
 
+                    downloadNotification.CompletionClickAction = () =>
+                    {
+                        PresentBeatmap?.Invoke(importedBeatmap);
+                        return true;
+                    };
                     downloadNotification.State = ProgressNotificationState.Completed;
+
                     currentDownloads.Remove(request);
                 }, TaskCreationOptions.LongRunning);
             };
 
             request.Failure += error =>
             {
+                BeatmapDownloadFailed?.Invoke(request);
+
                 if (error is OperationCanceledException) return;
 
                 downloadNotification.State = ProgressNotificationState.Cancelled;
@@ -276,7 +309,7 @@ namespace osu.Game.Beatmaps
         /// </summary>
         /// <param name="query">The query.</param>
         /// <returns>Results from the provided query.</returns>
-        public IEnumerable<BeatmapInfo> QueryBeatmaps(Expression<Func<BeatmapInfo, bool>> query) => beatmaps.Beatmaps.AsNoTracking().Where(query);
+        public IQueryable<BeatmapInfo> QueryBeatmaps(Expression<Func<BeatmapInfo, bool>> query) => beatmaps.Beatmaps.AsNoTracking().Where(query);
 
         /// <summary>
         /// Denotes whether an osu-stable installation is present to perform automated imports from.
@@ -355,21 +388,10 @@ namespace osu.Game.Beatmaps
                     beatmap.BeatmapInfo.Hash = ms.ComputeSHA2Hash();
                     beatmap.BeatmapInfo.MD5Hash = ms.ComputeMD5Hash();
 
-                    // check that no existing beatmap exists that is imported with the same online beatmap ID. if so, give it precedence.
-                    if (beatmap.BeatmapInfo.OnlineBeatmapID.HasValue && QueryBeatmap(b => b.OnlineBeatmapID.Value == beatmap.BeatmapInfo.OnlineBeatmapID.Value) != null)
-                        beatmap.BeatmapInfo.OnlineBeatmapID = null;
-
-                    RulesetInfo ruleset = rulesets.GetRuleset(beatmap.BeatmapInfo.RulesetID);
-
+                    var ruleset = rulesets.GetRuleset(beatmap.BeatmapInfo.RulesetID);
                     beatmap.BeatmapInfo.Ruleset = ruleset;
-
-                    if (ruleset != null)
-                    {
-                        // TODO: this should be done in a better place once we actually need to dynamically update it.
-                        beatmap.BeatmapInfo.StarDifficulty = ruleset.CreateInstance().CreateDifficultyCalculator(new DummyConversionBeatmap(beatmap)).Calculate().StarRating;
-                    }
-                    else
-                        beatmap.BeatmapInfo.StarDifficulty = 0;
+                    // TODO: this should be done in a better place once we actually need to dynamically update it.
+                    beatmap.BeatmapInfo.StarDifficulty = ruleset?.CreateInstance().CreateDifficultyCalculator(new DummyConversionBeatmap(beatmap)).Calculate().StarRating ?? 0;
 
                     beatmapInfos.Add(beatmap.BeatmapInfo);
                 }
@@ -382,16 +404,17 @@ namespace osu.Game.Beatmaps
         /// Query the API to populate mising OnlineBeatmapID / OnlineBeatmapSetID properties.
         /// </summary>
         /// <param name="beatmap">The beatmap to populate.</param>
+        /// <param name="otherBeatmaps">The other beatmaps contained within this set.</param>
         /// <param name="force">Whether to re-query if the provided beatmap already has populated values.</param>
         /// <returns>True if population was successful.</returns>
-        private bool fetchAndPopulateOnlineIDs(BeatmapInfo beatmap, bool force = false)
+        private bool fetchAndPopulateOnlineIDs(BeatmapInfo beatmap, IEnumerable<BeatmapInfo> otherBeatmaps, bool force = false)
         {
+            if (api?.State != APIState.Online)
+                return false;
+
             if (!force && beatmap.OnlineBeatmapID != null && beatmap.BeatmapSet.OnlineBeatmapSetID != null)
                 return true;
 
-            if (api.State != APIState.Online)
-                return false;
-
             Logger.Log("Attempting online lookup for IDs...", LoggingTarget.Database);
 
             try
@@ -404,6 +427,12 @@ namespace osu.Game.Beatmaps
 
                 Logger.Log($"Successfully mapped to {res.OnlineBeatmapSetID} / {res.OnlineBeatmapID}.", LoggingTarget.Database);
 
+                if (otherBeatmaps.Any(b => b.OnlineBeatmapID == res.OnlineBeatmapID))
+                {
+                    Logger.Log("Another beatmap in the same set already mapped to this ID. We'll skip adding it this time.", LoggingTarget.Database);
+                    return false;
+                }
+
                 beatmap.BeatmapSet.OnlineBeatmapSetID = res.OnlineBeatmapSetID;
                 beatmap.OnlineBeatmapID = res.OnlineBeatmapID;
                 return true;
@@ -432,5 +461,21 @@ namespace osu.Game.Beatmaps
             protected override Texture GetBackground() => null;
             protected override Track GetTrack() => null;
         }
+
+        private class DownloadNotification : ProgressNotification
+        {
+            public override bool IsImportant => false;
+
+            protected override Notification CreateCompletionNotification() => new SilencedProgressCompletionNotification
+            {
+                Activated = CompletionClickAction,
+                Text = CompletionText
+            };
+
+            private class SilencedProgressCompletionNotification : ProgressCompletionNotification
+            {
+                public override bool IsImportant => false;
+            }
+        }
     }
 }

osu.Game/Beatmaps/BeatmapMetadata.cs

@@ -14,7 +14,6 @@ namespace osu.Game.Beatmaps
     public class BeatmapMetadata : IEquatable<BeatmapMetadata>
     {
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-        [JsonIgnore]
         public int ID { get; set; }
 
         public string Title { get; set; }

osu.Game/Beatmaps/BeatmapProcessor.cs

@@ -6,23 +6,9 @@ using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Beatmaps
 {
-    public interface IBeatmapProcessor
-    {
-        IBeatmap Beatmap { get; }
-
-        /// <summary>
-        /// Post-processes <see cref="Beatmap"/> to add mode-specific components that aren't added during conversion.
-        /// <para>
-        /// An example of such a usage is for combo colours.
-        /// </para>
-        /// </summary>
-        void PostProcess();
-    }
-
     /// <summary>
-    /// Processes a post-converted Beatmap.
+    /// Provides functionality to alter a <see cref="IBeatmap"/> after it has been converted.
     /// </summary>
-    /// <typeparam name="TObject">The type of HitObject contained in the Beatmap.</typeparam>
     public class BeatmapProcessor : IBeatmapProcessor
     {
         public IBeatmap Beatmap { get; }
@@ -32,13 +18,7 @@ namespace osu.Game.Beatmaps
             Beatmap = beatmap;
         }
 
-        /// <summary>
-        /// Post-processes a Beatmap to add mode-specific components that aren't added during conversion.
-        /// <para>
-        /// An example of such a usage is for combo colours.
-        /// </para>
-        /// </summary>
-        public virtual void PostProcess()
+        public virtual void PreProcess()
         {
             IHasComboInformation lastObj = null;
 
@@ -62,5 +42,9 @@ namespace osu.Game.Beatmaps
                 lastObj = obj;
             }
         }
+
+        public virtual void PostProcess()
+        {
+        }
     }
 }

osu.Game/Beatmaps/ControlPoints/ControlPoint.cs

@@ -14,6 +14,15 @@ namespace osu.Game.Beatmaps.ControlPoints
 
         public int CompareTo(ControlPoint other) => Time.CompareTo(other.Time);
 
-        public bool Equals(ControlPoint other) => Time.Equals(other?.Time);
+        /// <summary>
+        /// Whether this <see cref="ControlPoint"/> provides the same parametric changes as another <see cref="ControlPoint"/>.
+        /// Basically an equality check without considering the <see cref="Time"/>.
+        /// </summary>
+        /// <param name="other">The <see cref="ControlPoint"/> to compare to.</param>
+        /// <returns>Whether this <see cref="ControlPoint"/> is equivalent to <paramref name="other"/>.</returns>
+        public virtual bool EquivalentTo(ControlPoint other) => true;
+
+        public bool Equals(ControlPoint other)
+            => EquivalentTo(other) && Time.Equals(other?.Time);
     }
 }

osu.Game/Beatmaps/ControlPoints/DifficultyControlPoint.cs

@@ -17,5 +17,10 @@ namespace osu.Game.Beatmaps.ControlPoints
         }
 
         private double speedMultiplier = 1;
+
+        public override bool EquivalentTo(ControlPoint other)
+            => base.EquivalentTo(other)
+               && other is DifficultyControlPoint difficulty
+               && SpeedMultiplier.Equals(difficulty.SpeedMultiplier);
     }
 }

osu.Game/Beatmaps/ControlPoints/EffectControlPoint.cs

@@ -14,5 +14,11 @@ namespace osu.Game.Beatmaps.ControlPoints
         /// Whether the first bar line of this control point is ignored.
         /// </summary>
         public bool OmitFirstBarLine;
+
+        public override bool EquivalentTo(ControlPoint other)
+            => base.EquivalentTo(other)
+               && other is EffectControlPoint effect
+               && KiaiMode.Equals(effect.KiaiMode)
+               && OmitFirstBarLine.Equals(effect.OmitFirstBarLine);
     }
 }

osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs

@@ -30,5 +30,24 @@ namespace osu.Game.Beatmaps.ControlPoints
             Name = sampleName,
             Volume = SampleVolume,
         };
+
+        /// <summary>
+        /// Applies <see cref="SampleBank"/> and <see cref="SampleVolume"/> to a <see cref="SampleInfo"/> if necessary, returning the modified <see cref="SampleInfo"/>.
+        /// </summary>
+        /// <param name="sampleInfo">The <see cref="SampleInfo"/>. This will not be modified.</param>
+        /// <returns>The modified <see cref="SampleInfo"/>. This does not share a reference with <paramref name="sampleInfo"/>.</returns>
+        public virtual SampleInfo ApplyTo(SampleInfo sampleInfo)
+        {
+            var newSampleInfo = sampleInfo.Clone();
+            newSampleInfo.Bank = sampleInfo.Bank ?? SampleBank;
+            newSampleInfo.Volume = sampleInfo.Volume > 0 ? sampleInfo.Volume : SampleVolume;
+            return newSampleInfo;
+        }
+
+        public override bool EquivalentTo(ControlPoint other)
+            => base.EquivalentTo(other)
+               && other is SampleControlPoint sample
+               && SampleBank.Equals(sample.SampleBank)
+               && SampleVolume.Equals(sample.SampleVolume);
     }
 }

osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs

@@ -23,5 +23,11 @@ namespace osu.Game.Beatmaps.ControlPoints
         }
 
         private double beatLength = 1000;
+
+        public override bool EquivalentTo(ControlPoint other)
+            => base.EquivalentTo(other)
+               && other is TimingControlPoint timing
+               && TimeSignature.Equals(timing.TimeSignature)
+               && BeatLength.Equals(timing.BeatLength);
     }
 }