Merge pull request #940 from peppy/update-framework

Update framework

appveyor.yml

@@ -20,4 +20,4 @@ build:
   verbosity: minimal
 after_build:
   - cmd: inspectcode /o="inspectcodereport.xml" /caches-home="inspectcode" osu.sln
-  - cmd: NVika parsereport "inspectcodereport.xml"
+  - cmd: NVika parsereport "inspectcodereport.xml" --treatwarningsaserrors

osu.Desktop.Deploy/App.config

@@ -31,6 +31,10 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
         <bindingRedirect oldVersion="0.0.0.0-10.0.0.0" newVersion="10.0.0.0" />
       </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="SharpCompress" publicKeyToken="afb0a02973931d96" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-0.17.1.0" newVersion="0.17.1.0" />
+      </dependentAssembly>
     </assemblyBinding>
   </runtime>
 </configuration>

osu.Desktop.Deploy/osu.Desktop.Deploy.csproj

@@ -49,10 +49,6 @@
       <HintPath>$(SolutionDir)\packages\DeltaCompressionDotNet.1.1.0\lib\net20\DeltaCompressionDotNet.PatchApi.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="ICSharpCode.SharpZipLib, Version=0.86.0.518, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.5.2\lib\Net45\ICSharpCode.SharpZipLib.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="Mono.Cecil, Version=0.9.6.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\Mono.Cecil.0.9.6.4\lib\net45\Mono.Cecil.dll</HintPath>
       <Private>True</Private>
@@ -73,15 +69,19 @@
       <HintPath>$(SolutionDir)\packages\Newtonsoft.Json.10.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="NuGet.Squirrel, Version=3.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.5.2\lib\Net45\NuGet.Squirrel.dll</HintPath>
+      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.7.5\lib\Net45\NuGet.Squirrel.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="SharpCompress, Version=0.17.1.0, Culture=neutral, PublicKeyToken=afb0a02973931d96, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\SharpCompress.0.17.1\lib\net45\SharpCompress.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Splat, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\Splat.2.0.0\lib\Net45\Splat.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Squirrel, Version=1.5.2.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.5.2\lib\Net45\Squirrel.dll</HintPath>
+    <Reference Include="Squirrel, Version=1.7.5.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.7.5\lib\Net45\Squirrel.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />

osu.Desktop.Deploy/packages.config

@@ -7,7 +7,8 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
   <package id="DeltaCompressionDotNet" version="1.1.0" targetFramework="net452" />
   <package id="Mono.Cecil" version="0.9.6.4" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net452" />
-  <package id="NuGet.CommandLine" version="3.5.0" targetFramework="net452" developmentDependency="true" />
+  <package id="NuGet.CommandLine" version="4.1.0" targetFramework="net452" developmentDependency="true" />
+  <package id="SharpCompress" version="0.17.1" targetFramework="net452" />
   <package id="Splat" version="2.0.0" targetFramework="net452" />
-  <package id="squirrel.windows" version="1.5.2" targetFramework="net452" />
+  <package id="squirrel.windows" version="1.7.5" targetFramework="net452" />
 </packages>

osu.Desktop.Tests/app.config

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.0" newVersion="10.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>

osu.Desktop.Tests/osu.Desktop.Tests.csproj

@@ -37,8 +37,9 @@
     <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\Newtonsoft.Json.10.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
-    <Reference Include="nunit.framework, Version=3.6.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\NUnit.3.6.1\lib\net45\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=3.7.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\NUnit.3.7.1\lib\net45\nunit.framework.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="SQLite.Net, Version=3.1.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -100,6 +101,7 @@
     <None Include="..\osu.licenseheader">
       <Link>osu.licenseheader</Link>
     </None>
+    <None Include="app.config" />
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>

osu.Desktop.Tests/packages.config

@@ -5,7 +5,7 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
 -->
 <packages>
   <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net45" />
-  <package id="NUnit" version="3.6.1" targetFramework="net45" />
+  <package id="NUnit" version="3.7.1" targetFramework="net45" />
   <package id="SQLite.Net.Core-PCL" version="3.1.1" targetFramework="net45" />
   <package id="SQLite.Net-PCL" version="3.1.1" targetFramework="net45" />
   <package id="SQLiteNetExtensions" version="1.3.0" targetFramework="net45" />

osu.Desktop.VisualTests/Tests/TestCaseBeatmapDetails.cs

@@ -41,7 +41,7 @@ namespace osu.Desktop.VisualTests.Tests
                     StarDifficulty = 5.3f,
                     Metrics = new BeatmapMetrics
                     {
-                        Ratings = Enumerable.Range(0,10),
+                        Ratings = Enumerable.Range(0, 10),
                         Fails = Enumerable.Range(lastRange, 100).Select(i => i % 12 - 6),
                         Retries = Enumerable.Range(lastRange - 3, 100).Select(i => i % 12 - 6),
                     },

osu.Desktop.VisualTests/Tests/TestCaseBreadcrumbs.cs

@@ -0,0 +1,39 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using osu.Framework.Graphics;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseBreadcrumbs : TestCase
+    {
+        public override string Description => @"breadcrumb > control";
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            BreadcrumbControl<BreadcrumbTab> c;
+            Add(c = new BreadcrumbControl<BreadcrumbTab>
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.X,
+                Width = 0.5f,
+            });
+
+            AddStep(@"first", () => c.Current.Value = BreadcrumbTab.Click);
+            AddStep(@"second", () => c.Current.Value = BreadcrumbTab.The);
+            AddStep(@"third", () => c.Current.Value = BreadcrumbTab.Circles);
+        }
+
+        private enum BreadcrumbTab
+        {
+            Click,
+            The,
+            Circles,
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseContextMenu.cs

@@ -0,0 +1,125 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseContextMenu : TestCase
+    {
+        public override string Description => @"Menu visible on right click";
+
+        private const int start_time = 0;
+        private const int duration = 1000;
+
+        private MyContextMenuContainer container;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(container = new MyContextMenuContainer
+            {
+                Size = new Vector2(200),
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = Color4.Green,
+                    }
+                }
+            });
+
+            Add(new AnotherContextMenuContainer
+            {
+                Size = new Vector2(200),
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = Color4.Red,
+                    }
+                }
+            });
+
+            container.Transforms.Add(new TransformPosition
+            {
+                StartValue = Vector2.Zero,
+                EndValue = new Vector2(0, 100),
+                StartTime = start_time,
+                EndTime = start_time + duration,
+                LoopCount = -1,
+                LoopDelay = duration * 3
+            });
+            container.Transforms.Add(new TransformPosition
+            {
+                StartValue = new Vector2(0, 100),
+                EndValue = new Vector2(100, 100),
+                StartTime = start_time + duration,
+                EndTime = start_time + duration * 2,
+                LoopCount = -1,
+                LoopDelay = duration * 3
+            });
+            container.Transforms.Add(new TransformPosition
+            {
+                StartValue = new Vector2(100, 100),
+                EndValue = new Vector2(100, 0),
+                StartTime = start_time + duration * 2,
+                EndTime = start_time + duration * 3,
+                LoopCount = -1,
+                LoopDelay = duration * 3
+            });
+            container.Transforms.Add(new TransformPosition
+            {
+                StartValue = new Vector2(100, 0),
+                EndValue = Vector2.Zero,
+                StartTime = start_time + duration * 3,
+                EndTime = start_time + duration * 4,
+                LoopCount = -1,
+                LoopDelay = duration * 3
+            });
+        }
+
+        private class MyContextMenuContainer : Container, IHasContextMenu
+        {
+            public ContextMenuItem[] ContextMenuItems => new ContextMenuItem[]
+            {
+                new OsuContextMenuItem(@"Some option"),
+                new OsuContextMenuItem(@"Highlighted option", MenuItemType.Highlighted),
+                new OsuContextMenuItem(@"Another option"),
+                new OsuContextMenuItem(@"Choose me please"),
+                new OsuContextMenuItem(@"And me too"),
+                new OsuContextMenuItem(@"Trying to fill"),
+                new OsuContextMenuItem(@"Destructive option", MenuItemType.Destructive),
+            };
+        }
+
+        private class AnotherContextMenuContainer : Container, IHasContextMenu
+        {
+            public ContextMenuItem[] ContextMenuItems => new ContextMenuItem[]
+            {
+                new OsuContextMenuItem(@"Simple option"),
+                new OsuContextMenuItem(@"Simple very very long option"),
+                new OsuContextMenuItem(@"Change width", MenuItemType.Highlighted) { Action = () => ResizeWidthTo(Width * 2, 100, EasingTypes.OutQuint) },
+                new OsuContextMenuItem(@"Change height", MenuItemType.Highlighted) { Action = () => ResizeHeightTo(Height * 2, 100, EasingTypes.OutQuint) },
+                new OsuContextMenuItem(@"Change width back", MenuItemType.Destructive) { Action = () => ResizeWidthTo(Width / 2, 100, EasingTypes.OutQuint) },
+                new OsuContextMenuItem(@"Change height back", MenuItemType.Destructive) { Action = () => ResizeHeightTo(Height / 2, 100, EasingTypes.OutQuint) },
+            };
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseDirect.cs

@@ -0,0 +1,199 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Testing;
+using osu.Game.Database;
+using osu.Game.Overlays;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    public class TestCaseDirect : TestCase
+    {
+        public override string Description => @"osu!direct overlay";
+
+        private DirectOverlay direct;
+        private RulesetDatabase rulesets;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(direct = new DirectOverlay());
+            newBeatmaps();
+
+            AddStep(@"toggle", direct.ToggleVisibility);
+            AddStep(@"result counts", () => direct.ResultAmounts = new DirectOverlay.ResultCounts(1, 4, 13));
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(RulesetDatabase rulesets)
+        {
+            this.rulesets = rulesets;
+        }
+
+        private void newBeatmaps()
+        {
+            var ruleset = rulesets.GetRuleset(0);
+
+            direct.BeatmapSets = new[]
+            {
+                new BeatmapSetInfo
+                {
+                    Metadata = new BeatmapMetadata
+                    {
+                        Title = @"OrVid",
+                        Artist = @"An",
+                        Author = @"RLC",
+                        Source = @"",
+                    },
+                    Beatmaps = new List<BeatmapInfo>
+                    {
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 5.35f,
+                            Metadata = new BeatmapMetadata(),
+                            OnlineInfo = new BeatmapOnlineInfo
+                            {
+                                Covers = new[] { @"https://assets.ppy.sh//beatmaps/578332/covers/cover.jpg?1494591390" },
+                                Preview = @"https://b.ppy.sh/preview/578332.mp3",
+                                PlayCount = 97,
+                                FavouriteCount = 72,
+                            },
+                        },
+                    },
+                },
+                new BeatmapSetInfo
+                {
+                    Metadata = new BeatmapMetadata
+                    {
+                        Title = @"tiny lamp",
+                        Artist = @"fhana",
+                        Author = @"Sotarks",
+                        Source = @"ぎんぎつね",
+                    },
+                    Beatmaps = new List<BeatmapInfo>
+                    {
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 5.81f,
+                            Metadata = new BeatmapMetadata(),
+                            OnlineInfo = new BeatmapOnlineInfo
+                            {
+                                Covers = new[] { @"https://assets.ppy.sh//beatmaps/599627/covers/cover.jpg?1494539318" },
+                                Preview = @"https//b.ppy.sh/preview/599627.mp3",
+                                PlayCount = 3082,
+                                FavouriteCount = 14,
+                            },
+                        },
+                    },
+                },
+                new BeatmapSetInfo
+                {
+                    Metadata = new BeatmapMetadata
+                    {
+                        Title = @"At Gwanghwamun",
+                        Artist = @"KYUHYUN",
+                        Author = @"Cerulean Veyron",
+                        Source = @"",
+                    },
+                    Beatmaps = new List<BeatmapInfo>
+                    {
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 0.9f,
+                            Metadata = new BeatmapMetadata(),
+                            OnlineInfo = new BeatmapOnlineInfo
+                            {
+                                Covers = new[] { @"https://assets.ppy.sh//beatmaps/513268/covers/cover.jpg?1494502863" },
+                                Preview = @"https//b.ppy.sh/preview/513268.mp3",
+                                PlayCount = 2762,
+                                FavouriteCount = 15,
+                            },
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 1.1f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 2.02f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 3.49f,
+                        },
+                    },
+                },
+                new BeatmapSetInfo
+                {
+                    Metadata = new BeatmapMetadata
+                    {
+                        Title = @"RHAPSODY OF BLUE SKY",
+                        Artist = @"fhana",
+                        Author = @"[Kamiya]",
+                        Source = @"小林さんちのメイドラゴン",
+                    },
+                    Beatmaps = new List<BeatmapInfo>
+                    {
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 1.26f,
+                            Metadata = new BeatmapMetadata(),
+                            OnlineInfo = new BeatmapOnlineInfo
+                            {
+                                Covers = new[] { @"https://assets.ppy.sh//beatmaps/586841/covers/cover.jpg?1494052741" },
+                                Preview = @"https//b.ppy.sh/preview/586841.mp3",
+                                PlayCount = 62317,
+                                FavouriteCount = 161,
+                            },
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 2.01f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 2.87f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 3.76f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 3.93f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 4.37f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 5.13f,
+                        },
+                        new BeatmapInfo
+                        {
+                            Ruleset = ruleset,
+                            StarDifficulty = 5.42f,
+                        },
+                    },
+                },
+            };
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseDrawableRoom.cs

@@ -0,0 +1,74 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Screens.Multiplayer;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Users;
+using osu.Game.Database;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseDrawableRoom : TestCase
+    {
+        public override string Description => @"Select your favourite room";
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            DrawableRoom first;
+            DrawableRoom second;
+            Add(new FillFlowContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                AutoSizeAxes = Axes.Y,
+                Width = 500f,
+                Direction = FillDirection.Vertical,
+                Children = new Drawable[]
+                {
+                    first = new DrawableRoom(new Room()),
+                    second = new DrawableRoom(new Room()),
+                }
+            });
+
+            first.Room.Name.Value = @"Great Room Right Here";
+            first.Room.Host.Value = new User { Username = @"Naeferith", Id = 9492835, Country = new Country { FlagName = @"FR" } };
+            first.Room.Status.Value = new RoomStatusOpen();
+            first.Room.Beatmap.Value = new BeatmapMetadata { Title = @"Seiryu", Artist = @"Critical Crystal" };
+
+            second.Room.Name.Value = @"Relax It's The Weekend";
+            second.Room.Host.Value = new User { Username = @"peppy", Id = 2, Country = new Country { FlagName = @"AU" } };
+            second.Room.Status.Value = new RoomStatusPlaying();
+            second.Room.Beatmap.Value = new BeatmapMetadata { Title = @"ZAQ", Artist = @"Serendipity" };
+
+            AddStep(@"change state", () =>
+            {
+                first.Room.Status.Value = new RoomStatusPlaying();
+            });
+
+            AddStep(@"change name", () =>
+            {
+                first.Room.Name.Value = @"I Changed Name";
+            });
+
+            AddStep(@"change host", () =>
+            {
+                first.Room.Host.Value = new User { Username = @"DrabWeb", Id = 6946022, Country = new Country { FlagName = @"CA" } };
+            });
+
+            AddStep(@"change beatmap", () =>
+            {
+                first.Room.Beatmap.Value = null;
+            });
+
+            AddStep(@"change state", () =>
+            {
+                first.Room.Status.Value = new RoomStatusOpen();
+            });
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseGamefield.cs

@@ -18,7 +18,7 @@ using osu.Game.Rulesets.Taiko.UI;
 using System.Collections.Generic;
 using osu.Desktop.VisualTests.Beatmaps;
 using osu.Framework.Allocation;
-using osu.Game.Beatmaps.Timing;
+using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Desktop.VisualTests.Tests
 {
@@ -53,8 +53,8 @@ namespace osu.Desktop.VisualTests.Tests
                 time += RNG.Next(50, 500);
             }
 
-            TimingInfo timing = new TimingInfo();
-            timing.ControlPoints.Add(new ControlPoint
+            var controlPointInfo = new ControlPointInfo();
+            controlPointInfo.TimingPoints.Add(new TimingControlPoint
             {
                 BeatLength = 200
             });
@@ -73,7 +73,7 @@ namespace osu.Desktop.VisualTests.Tests
                         Author = @"peppy",
                     },
                 },
-                TimingInfo = timing
+                ControlPointInfo = controlPointInfo
             });
 
             Add(new Drawable[]

osu.Desktop.VisualTests/Tests/TestCaseGraph.cs

@@ -30,7 +30,7 @@ namespace osu.Desktop.VisualTests.Tests
                 },
             };
 
-            AddStep("values from 1-10", () => graph.Values = Enumerable.Range(1,10).Select(i => (float)i));
+            AddStep("values from 1-10", () => graph.Values = Enumerable.Range(1, 10).Select(i => (float)i));
             AddStep("values from 1-100", () => graph.Values = Enumerable.Range(1, 100).Select(i => (float)i));
             AddStep("reversed values from 1-10", () => graph.Values = Enumerable.Range(1, 10).Reverse().Select(i => (float)i));
             AddStep("Bottom to top", () => graph.Direction = BarDirection.BottomToTop);

osu.Desktop.VisualTests/Tests/TestCaseKeyCounter.cs

@@ -54,7 +54,7 @@ namespace osu.Desktop.VisualTests.Tests
                 Children = new Drawable[]
                 {
                     new SpriteText { Text = "FadeTime" },
-                    sliderBar =new TestSliderBar<int>
+                    sliderBar = new TestSliderBar<int>
                     {
                         Width = 150,
                         Height = 10,

osu.Desktop.VisualTests/Tests/TestCaseManiaHitObjects.cs

@@ -40,7 +40,7 @@ namespace osu.Desktop.VisualTests.Tests
                             {
                                 Name = "Timing section",
                                 RelativeSizeAxes = Axes.Both,
-                                RelativeCoordinateSpace = new Vector2(1, 10000),
+                                RelativeChildSize = new Vector2(1, 10000),
                                 Children = new[]
                                 {
                                     new DrawableNote(new Note { StartTime = 5000 }) { AccentColour = Color4.Red },
@@ -62,7 +62,7 @@ namespace osu.Desktop.VisualTests.Tests
                             {
                                 Name = "Timing section",
                                 RelativeSizeAxes = Axes.Both,
-                                RelativeCoordinateSpace = new Vector2(1, 10000),
+                                RelativeChildSize = new Vector2(1, 10000),
                                 Children = new[]
                                 {
                                     new DrawableHoldNote(new HoldNote

osu.Desktop.VisualTests/Tests/TestCaseManiaPlayfield.cs

@@ -6,11 +6,16 @@ using osu.Framework.Testing;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.UI;
 using System;
-using System.Collections.Generic;
-using osu.Game.Beatmaps.Timing;
 using OpenTK;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Objects;
+using osu.Framework.Configuration;
+using OpenTK.Input;
+using osu.Framework.Timing;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using System.Linq;
+using osu.Game.Rulesets.Mania.Timing;
+using osu.Game.Rulesets.Timing;
 
 namespace osu.Desktop.VisualTests.Tests
 {
@@ -27,7 +32,7 @@ namespace osu.Desktop.VisualTests.Tests
             Action<int, SpecialColumnPosition> createPlayfield = (cols, pos) =>
             {
                 Clear();
-                Add(new ManiaPlayfield(cols, new List<ControlPoint>())
+                Add(new ManiaPlayfield(cols)
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
@@ -36,27 +41,72 @@ namespace osu.Desktop.VisualTests.Tests
                 });
             };
 
-            Action<int, SpecialColumnPosition> createPlayfieldWithNotes = (cols, pos) =>
+            const double start_time = 500;
+            const double duration = 500;
+
+            Func<double, bool, SpeedAdjustmentContainer> createTimingChange = (time, gravity) => new ManiaSpeedAdjustmentContainer(new MultiplierControlPoint(time)
+            {
+                TimingPoint = { BeatLength = 1000 }
+            }, gravity ? ScrollingAlgorithm.Gravity : ScrollingAlgorithm.Basic);
+
+            Action<bool> createPlayfieldWithNotes = gravity =>
             {
                 Clear();
 
+                var rateAdjustClock = new StopwatchClock(true) { Rate = 1 };
+
                 ManiaPlayfield playField;
-                Add(playField = new ManiaPlayfield(cols, new List<ControlPoint> { new ControlPoint { BeatLength = 200 } })
+                Add(playField = new ManiaPlayfield(4)
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    SpecialColumnPosition = pos,
-                    Scale = new Vector2(1, -1)
+                    Scale = new Vector2(1, -1),
+                    Clock = new FramedClock(rateAdjustClock)
                 });
 
-                for (int i = 0; i < cols; i++)
+                if (!gravity)
+                    playField.Columns.ForEach(c => c.Add(createTimingChange(0, false)));
+
+                for (double t = start_time; t <= start_time + duration; t += 100)
                 {
+                    if (gravity)
+                        playField.Columns.ElementAt(0).Add(createTimingChange(t, true));
+
                     playField.Add(new DrawableNote(new Note
                     {
-                        StartTime = Time.Current + 1000,
-                        Column = i
-                    }));
+                        StartTime = t,
+                        Column = 0
+                    }, new Bindable<Key>(Key.D)));
+
+                    if (gravity)
+                        playField.Columns.ElementAt(3).Add(createTimingChange(t, true));
+
+                    playField.Add(new DrawableNote(new Note
+                    {
+                        StartTime = t,
+                        Column = 3
+                    }, new Bindable<Key>(Key.K)));
                 }
+
+                if (gravity)
+                    playField.Columns.ElementAt(1).Add(createTimingChange(start_time, true));
+
+                playField.Add(new DrawableHoldNote(new HoldNote
+                {
+                    StartTime = start_time,
+                    Duration = duration,
+                    Column = 1
+                }, new Bindable<Key>(Key.F)));
+
+                if (gravity)
+                    playField.Columns.ElementAt(2).Add(createTimingChange(start_time, true));
+
+                playField.Add(new DrawableHoldNote(new HoldNote
+                {
+                    StartTime = start_time,
+                    Duration = duration,
+                    Column = 2
+                }, new Bindable<Key>(Key.J)));
             };
 
             AddStep("1 column", () => createPlayfield(1, SpecialColumnPosition.Normal));
@@ -68,19 +118,16 @@ namespace osu.Desktop.VisualTests.Tests
             AddStep("Left special style", () => createPlayfield(8, SpecialColumnPosition.Left));
             AddStep("Right special style", () => createPlayfield(8, SpecialColumnPosition.Right));
 
-            AddStep("Normal special style", () => createPlayfield(4, SpecialColumnPosition.Normal));
+            AddStep("Notes with input", () => createPlayfieldWithNotes(false));
+            AddWaitStep((int)Math.Ceiling((start_time + duration) / TimePerAction));
 
-            AddStep("Notes", () => createPlayfieldWithNotes(4, SpecialColumnPosition.Normal));
-            AddWaitStep(10);
-            AddStep("Left special style", () => createPlayfieldWithNotes(4, SpecialColumnPosition.Left));
-            AddWaitStep(10);
-            AddStep("Right special style", () => createPlayfieldWithNotes(4, SpecialColumnPosition.Right));
-            AddWaitStep(10);
+            AddStep("Notes with gravity", () => createPlayfieldWithNotes(true));
+            AddWaitStep((int)Math.Ceiling((start_time + duration) / TimePerAction));
         }
 
         private void triggerKeyDown(Column column)
         {
-            column.TriggerKeyDown(new InputState(), new KeyDownEventArgs
+            column.TriggerOnKeyDown(new InputState(), new KeyDownEventArgs
             {
                 Key = column.Key,
                 Repeat = false
@@ -89,7 +136,7 @@ namespace osu.Desktop.VisualTests.Tests
 
         private void triggerKeyUp(Column column)
         {
-            column.TriggerKeyUp(new InputState(), new KeyUpEventArgs
+            column.TriggerOnKeyUp(new InputState(), new KeyUpEventArgs
             {
                 Key = column.Key
             });

osu.Desktop.VisualTests/Tests/TestCaseMenuOverlays.cs

@@ -35,7 +35,7 @@ namespace osu.Desktop.VisualTests.Tests
             });
 
             AddStep(@"Pause", delegate {
-                if(failOverlay.State == Visibility.Visible)
+                if (failOverlay.State == Visibility.Visible)
                 {
                     failOverlay.Hide();
                 }

osu.Desktop.VisualTests/Tests/TestCaseReplaySettingsOverlay.cs

@@ -0,0 +1,55 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Screens.Play;
+using osu.Game.Screens.Play.ReplaySettings;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseReplaySettingsOverlay : TestCase
+    {
+        public override string Description => @"Settings visible in replay/auto";
+
+        private ExampleContainer container;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(new ReplaySettingsOverlay()
+            {
+                Anchor = Anchor.TopRight,
+                Origin = Anchor.TopRight,
+            });
+
+            Add(container = new ExampleContainer());
+
+            AddStep(@"Add button", () => container.Add(new OsuButton
+            {
+                RelativeSizeAxes = Axes.X,
+                Text = @"Button",
+            }));
+
+            AddStep(@"Add checkbox", () => container.Add(new ReplayCheckbox
+            {
+                LabelText = "Checkbox",
+            }));
+
+            AddStep(@"Add textbox", () => container.Add(new FocusedTextBox
+            {
+                RelativeSizeAxes = Axes.X,
+                Height = 30,
+                PlaceholderText = "Textbox",
+                HoldFocus = false,
+            }));
+        }
+
+        private class ExampleContainer : ReplayGroup
+        {
+            protected override string Title => @"example";
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseScoreCounter.cs

@@ -79,7 +79,8 @@ namespace osu.Desktop.VisualTests.Tests
             {
                 score.Current.Value += 300 + (ulong)(300.0 * (comboCounter.Current > 0 ? comboCounter.Current - 1 : 0) / 25.0);
                 comboCounter.Increment();
-                numerator++; denominator++;
+                numerator++;
+                denominator++;
                 accuracyCounter.SetFraction(numerator, denominator);
             });
 

osu.Desktop.VisualTests/Tests/TestCaseScrollingHitObjects.cs

@@ -0,0 +1,220 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Testing;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Timing;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    public class TestCaseScrollingHitObjects : TestCase
+    {
+        public override string Description => "SpeedAdjustmentContainer/DrawableTimingSection";
+
+        private SpeedAdjustmentCollection adjustmentCollection;
+
+        private BindableDouble timeRangeBindable;
+        private OsuSpriteText timeRangeText;
+        private OsuSpriteText bottomLabel;
+        private SpriteText topTime, bottomTime;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            timeRangeBindable = new BindableDouble(2000)
+            {
+                MinValue = 200,
+                MaxValue = 4000,
+            };
+
+            SliderBar<double> timeRange;
+            Add(timeRange = new BasicSliderBar<double>
+            {
+                Size = new Vector2(200, 20),
+                SelectionColor = Color4.Pink,
+                KeyboardStep = 100
+            });
+
+            Add(timeRangeText = new OsuSpriteText
+            {
+                X = 210,
+                TextSize = 16,
+            });
+
+            timeRange.Current.BindTo(timeRangeBindable);
+            timeRangeBindable.ValueChanged += v => timeRangeText.Text = $"Visible Range: {v:#,#.#}";
+            timeRangeBindable.ValueChanged += v => bottomLabel.Text = $"t minus {v:#,#}";
+
+            Add(new Drawable[]
+            {
+                new Container
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Size = new Vector2(100, 500),
+                    Children = new Drawable[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0.25f
+                        },
+                        adjustmentCollection = new SpeedAdjustmentCollection(Axes.Y)
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            VisibleTimeRange = timeRangeBindable,
+                            Masking = true,
+                        },
+                        new OsuSpriteText
+                        {
+                            Text = "t minus 0",
+                            Margin = new MarginPadding(2),
+                            TextSize = 14,
+                            Anchor = Anchor.TopRight,
+                        },
+                        bottomLabel = new OsuSpriteText
+                        {
+                            Text = "t minus x",
+                            Margin = new MarginPadding(2),
+                            TextSize = 14,
+                            Anchor = Anchor.BottomRight,
+                            Origin = Anchor.BottomLeft,
+                        },
+                        topTime = new OsuSpriteText
+                        {
+                            Margin = new MarginPadding(2),
+                            TextSize = 14,
+                            Anchor = Anchor.TopLeft,
+                            Origin = Anchor.TopRight,
+                        },
+                        bottomTime = new OsuSpriteText
+                        {
+                            Margin = new MarginPadding(2),
+                            TextSize = 14,
+                            Anchor = Anchor.BottomLeft,
+                            Origin = Anchor.BottomRight,
+                        },
+                    }
+                }
+            });
+
+            timeRangeBindable.TriggerChange();
+
+            adjustmentCollection.Add(new TestSpeedAdjustmentContainer(new MultiplierControlPoint()));
+
+            AddStep("Add hit object", () => adjustmentCollection.Add(new TestDrawableHitObject(new HitObject { StartTime = Time.Current + 2000 })));
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            topTime.Text = Time.Current.ToString("#,#");
+            bottomTime.Text = (Time.Current + timeRangeBindable.Value).ToString("#,#");
+        }
+
+        private class TestSpeedAdjustmentContainer : SpeedAdjustmentContainer
+        {
+            public TestSpeedAdjustmentContainer(MultiplierControlPoint controlPoint)
+                : base(controlPoint)
+            {
+            }
+
+            protected override DrawableTimingSection CreateTimingSection() => new TestDrawableTimingSection(ControlPoint);
+
+            private class TestDrawableTimingSection : DrawableTimingSection
+            {
+                private readonly MultiplierControlPoint controlPoint;
+
+                public TestDrawableTimingSection(MultiplierControlPoint controlPoint)
+                {
+                    this.controlPoint = controlPoint;
+                }
+
+                protected override void Update()
+                {
+                    base.Update();
+
+                    Y = (float)(controlPoint.StartTime - Time.Current);
+                }
+            }
+        }
+
+        private class TestDrawableHitObject : DrawableHitObject
+        {
+            private readonly Box background;
+            private const float height = 14;
+
+            public TestDrawableHitObject(HitObject hitObject)
+                : base(hitObject)
+            {
+                AutoSizeAxes = Axes.Y;
+                RelativeSizeAxes = Axes.X;
+                RelativePositionAxes = Axes.Y;
+
+                Y = (float)hitObject.StartTime;
+
+                Children = new Drawable[]
+                {
+                    background = new Box
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        Height = height,
+                    },
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        Colour = Color4.Cyan,
+                        Height = 1,
+                    },
+                    new OsuSpriteText
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Colour = Color4.Black,
+                        TextSize = height,
+                        Font = @"Exo2.0-BoldItalic",
+                        Text = $"{hitObject.StartTime:#,#}"
+                    }
+                };
+            }
+
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
+                FadeInFromZero(250, EasingTypes.OutQuint);
+            }
+
+            private bool hasExpired;
+            protected override void Update()
+            {
+                base.Update();
+                if (Time.Current >= HitObject.StartTime)
+                {
+                    background.Colour = Color4.Red;
+
+                    if (!hasExpired)
+                    {
+                        using (BeginDelayedSequence(200))
+                        {
+                            FadeOut(200);
+                            Expire();
+                        }
+
+                        hasExpired = true;
+                    }
+                }
+            }
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseSkipButton.cs

@@ -0,0 +1,19 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Testing;
+using osu.Game.Screens.Play;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseSkipButton : TestCase
+    {
+        public override string Description => @"Skip skip skippediskip";
+
+        public override void Reset()
+        {
+            base.Reset();
+            Add(new SkipButton(Clock.CurrentTime + 5000));
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseSocial.cs

@@ -0,0 +1,85 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Testing;
+using osu.Game.Overlays;
+using osu.Game.Users;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    public class TestCaseSocial : TestCase
+    {
+        public override string Description => @"social browser overlay";
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            SocialOverlay s = new SocialOverlay
+            {
+                Users = new[]
+                {
+                    new User
+                    {
+                        Username = @"flyte",
+                        Id = 3103765,
+                        Country = new Country { FlagName = @"JP" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c1.jpg",
+                    },
+                    new User
+                    {
+                        Username = @"Cookiezi",
+                        Id = 124493,
+                        Country = new Country { FlagName = @"KR" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c2.jpg",
+                    },
+                    new User
+                    {
+                        Username = @"Angelsim",
+                        Id = 1777162,
+                        Country = new Country { FlagName = @"KR" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
+                    },
+                    new User
+                    {
+                        Username = @"Rafis",
+                        Id = 2558286,
+                        Country = new Country { FlagName = @"PL" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c4.jpg",
+                    },
+                    new User
+                    {
+                        Username = @"hvick225",
+                        Id = 50265,
+                        Country = new Country { FlagName = @"TW" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c5.jpg",
+                    },
+                    new User
+                    {
+                        Username = @"peppy",
+                        Id = 2,
+                        Country = new Country { FlagName = @"AU" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c6.jpg"
+                    },
+                    new User
+                    {
+                        Username = @"filsdelama",
+                        Id = 2831793,
+                        Country = new Country { FlagName = @"FR" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c7.jpg"
+                    },
+                    new User
+                    {
+                        Username = @"_index",
+                        Id = 652457,
+                        Country = new Country { FlagName = @"RU" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c8.jpg"
+                    },
+                },
+            };
+            Add(s);
+
+            AddStep(@"toggle", s.ToggleVisibility);
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseTooltip.cs

@@ -1,92 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Testing;
-using osu.Game.Graphics.Sprites;
-using osu.Game.Graphics.UserInterface;
-using osu.Framework.Configuration;
-using OpenTK;
-using osu.Game.Graphics;
-
-namespace osu.Desktop.VisualTests.Tests
-{
-    internal class TestCaseTooltip : TestCase
-    {
-        public override string Description => "tests tooltips on various elements";
-
-        public override void Reset()
-        {
-            base.Reset();
-            OsuSliderBar<int> slider;
-            OsuSliderBar<double> sliderDouble;
-
-            const float width = 400;
-
-            Children = new Drawable[]
-            {
-                new FillFlowContainer
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Direction = FillDirection.Vertical,
-                    Spacing = new Vector2(0, 10),
-                    Children = new Drawable[]
-                    {
-                        new TooltipTextContainer("text with a tooltip"),
-                        new TooltipTextContainer("more text with another tooltip"),
-                        new TooltipTextbox
-                        {
-                            Text = "a textbox with a tooltip",
-                            Size = new Vector2(width,30),
-                        },
-                        slider = new OsuSliderBar<int>
-                        {
-                            Width = width,
-                        },
-                        sliderDouble = new OsuSliderBar<double>
-                        {
-                            Width = width,
-                        },
-                    },
-                },
-            };
-
-            slider.Current.BindTo(new BindableInt(5)
-            {
-                MaxValue = 10,
-                MinValue = 0
-            });
-
-            sliderDouble.Current.BindTo(new BindableDouble(0.5)
-            {
-                MaxValue = 1,
-                MinValue = 0
-            });
-        }
-
-        private class TooltipTextContainer : Container, IHasTooltip
-        {
-            private readonly OsuSpriteText text;
-
-            public string TooltipText => text.Text;
-
-            public TooltipTextContainer(string tooltipText)
-            {
-                AutoSizeAxes = Axes.Both;
-                Children = new[]
-                {
-                    text = new OsuSpriteText
-                    {
-                        Text = tooltipText,
-                    }
-                };
-            }
-        }
-
-        private class TooltipTextbox : OsuTextBox, IHasTooltip
-        {
-            public string TooltipText => Text;
-        }
-    }
-}

osu.Desktop.VisualTests/Tests/TestCaseTwoLayerButton.cs

@@ -3,20 +3,18 @@
 
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
-using osu.Game.Screens.Play;
 
 namespace osu.Desktop.VisualTests.Tests
 {
     internal class TestCaseTwoLayerButton : TestCase
     {
-        public override string Description => @"Back and skip and what not";
+        public override string Description => @"Mostly back button";
 
         public override void Reset()
         {
             base.Reset();
 
             Add(new BackButton());
-            Add(new SkipButton(Clock.CurrentTime + 5000));
         }
     }
 }

osu.Desktop.VisualTests/Tests/TestCaseUserPanel.cs

@@ -0,0 +1,57 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Testing;
+using osu.Framework.Graphics;
+using osu.Game.Users;
+using osu.Framework.Graphics.Containers;
+using OpenTK;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseUserPanel : TestCase
+    {
+        public override string Description => @"Panels for displaying a user's status";
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            UserPanel flyte;
+            UserPanel peppy;
+            Add(new FillFlowContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                AutoSizeAxes = Axes.Both,
+                Spacing = new Vector2(10f),
+                Children = new[]
+                {
+                    flyte = new UserPanel(new User
+                    {
+                        Username = @"flyte",
+                        Id = 3103765,
+                        Country = new Country { FlagName = @"JP" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c6.jpg"
+                    }) { Width = 300 },
+                    peppy = new UserPanel(new User
+                    {
+                        Username = @"peppy",
+                        Id = 2,
+                        Country = new Country { FlagName = @"AU" },
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg"
+                    }) { Width = 300 },
+                },
+            });
+
+            flyte.Status.Value = new UserStatusOnline();
+            peppy.Status.Value = new UserStatusSoloGame();
+
+            AddStep(@"spectating", () => { flyte.Status.Value = new UserStatusSpectating(); });
+            AddStep(@"multiplaying", () => { flyte.Status.Value = new UserStatusMultiplayerGame(); });
+            AddStep(@"modding", () => { flyte.Status.Value = new UserStatusModding(); });
+            AddStep(@"offline", () => { flyte.Status.Value = new UserStatusOffline(); });
+            AddStep(@"null status", () => { flyte.Status.Value = null; });
+        }
+    }
+}

osu.Desktop.VisualTests/osu.Desktop.VisualTests.csproj

@@ -87,11 +87,13 @@
     <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\Newtonsoft.Json.10.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
-    <Reference Include="OpenTK, Version=2.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.2.0.50727.1341\lib\net45\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.3.0\lib\net45\OpenTK.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="SharpCompress, Version=0.15.2.0, Culture=neutral, PublicKeyToken=afb0a02973931d96, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\SharpCompress.0.15.2\lib\net45\SharpCompress.dll</HintPath>
+    <Reference Include="SharpCompress, Version=0.17.1.0, Culture=neutral, PublicKeyToken=afb0a02973931d96, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\SharpCompress.0.17.1\lib\net45\SharpCompress.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="SQLite.Net, Version=3.1.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -187,6 +189,7 @@
     <Compile Include="Program.cs" />
     <Compile Include="Tests\TestCaseChatDisplay.cs" />
     <Compile Include="Tests\TestCaseBeatmapDetails.cs" />
+    <Compile Include="Tests\TestCaseContextMenu.cs" />
     <Compile Include="Tests\TestCaseDrawings.cs" />
     <Compile Include="Tests\TestCaseGamefield.cs" />
     <Compile Include="Tests\TestCaseGraph.cs" />
@@ -196,6 +199,7 @@
     <Compile Include="Tests\TestCaseMusicController.cs" />
     <Compile Include="Tests\TestCaseNotificationManager.cs" />
     <Compile Include="Tests\TestCaseOnScreenDisplay.cs" />
+    <Compile Include="Tests\TestCaseReplaySettingsOverlay.cs" />
     <Compile Include="Tests\TestCasePlayer.cs" />
     <Compile Include="Tests\TestCaseHitObjects.cs" />
     <Compile Include="Tests\TestCaseKeyCounter.cs" />
@@ -203,12 +207,13 @@
     <Compile Include="Tests\TestCaseReplay.cs" />
     <Compile Include="Tests\TestCaseResults.cs" />
     <Compile Include="Tests\TestCaseScoreCounter.cs" />
+    <Compile Include="Tests\TestCaseScrollingHitObjects.cs" />
+    <Compile Include="Tests\TestCaseSkipButton.cs" />
     <Compile Include="Tests\TestCaseTabControl.cs" />
     <Compile Include="Tests\TestCaseTaikoHitObjects.cs" />
     <Compile Include="Tests\TestCaseTaikoPlayfield.cs" />
     <Compile Include="Tests\TestCaseTextAwesome.cs" />
     <Compile Include="Tests\TestCasePlaySongSelect.cs" />
-    <Compile Include="Tests\TestCaseTooltip.cs" />
     <Compile Include="Tests\TestCaseTwoLayerButton.cs" />
     <Compile Include="VisualTestGame.cs" />
     <Compile Include="Platform\TestStorage.cs" />
@@ -220,6 +225,11 @@
     <Compile Include="Tests\TestCaseLeaderboard.cs" />
     <Compile Include="Beatmaps\TestWorkingBeatmap.cs" />
     <Compile Include="Tests\TestCaseBeatmapDetailArea.cs" />
+    <Compile Include="Tests\TestCaseDrawableRoom.cs" />
+    <Compile Include="Tests\TestCaseUserPanel.cs" />
+    <Compile Include="Tests\TestCaseDirect.cs" />
+    <Compile Include="Tests\TestCaseSocial.cs" />
+    <Compile Include="Tests\TestCaseBreadcrumbs.cs" />
   </ItemGroup>
   <ItemGroup />
   <ItemGroup />

osu.Desktop.VisualTests/packages.config

@@ -5,8 +5,8 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
 -->
 <packages>
   <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net45" />
-  <package id="ppy.OpenTK" version="2.0.50727.1341" targetFramework="net45" />
-  <package id="SharpCompress" version="0.15.2" targetFramework="net45" />
+  <package id="ppy.OpenTK" version="3.0" targetFramework="net45" />
+  <package id="SharpCompress" version="0.17.1" targetFramework="net45" />
   <package id="SQLite.Net.Core-PCL" version="3.1.1" targetFramework="net45" />
   <package id="SQLite.Net-PCL" version="3.1.1" targetFramework="net45" />
   <package id="SQLiteNetExtensions" version="1.3.0" targetFramework="net45" />

osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs

@@ -37,5 +37,7 @@ namespace osu.Desktop.Beatmaps.IO
         {
             // no-op
         }
+
+        public override Stream GetUnderlyingStream() => null;
     }
 }

osu.Desktop/osu.Desktop.csproj

@@ -121,18 +121,23 @@
     </Reference>
     <Reference Include="mscorlib" />
     <Reference Include="NuGet.Squirrel, Version=3.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.5.2\lib\Net45\NuGet.Squirrel.dll</HintPath>
+      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.7.5\lib\Net45\NuGet.Squirrel.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=2.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.2.0.50727.1341\lib\net45\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.3.0\lib\net45\OpenTK.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="SharpCompress, Version=0.17.1.0, Culture=neutral, PublicKeyToken=afb0a02973931d96, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\SharpCompress.0.17.1\lib\net45\SharpCompress.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Splat, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\Splat.2.0.0\lib\Net45\Splat.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Squirrel, Version=1.5.2.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.5.2\lib\Net45\Squirrel.dll</HintPath>
+    <Reference Include="Squirrel, Version=1.7.5.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\squirrel.windows.1.7.5\lib\Net45\Squirrel.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />

osu.Desktop/packages.config

@@ -7,7 +7,8 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
   <package id="DeltaCompressionDotNet" version="1.1.0" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
   <package id="Mono.Cecil" version="0.9.6.4" targetFramework="net45" />
-  <package id="ppy.OpenTK" version="2.0.50727.1341" targetFramework="net45" />
+  <package id="ppy.OpenTK" version="3.0" targetFramework="net45" />
+  <package id="SharpCompress" version="0.17.1" targetFramework="net45" />
   <package id="Splat" version="2.0.0" targetFramework="net45" />
-  <package id="squirrel.windows" version="1.5.2" targetFramework="net45" />
+  <package id="squirrel.windows" version="1.7.5" targetFramework="net45" />
 </packages>

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -28,7 +28,14 @@ namespace osu.Game.Rulesets.Catch
                     {
                         new CatchModEasy(),
                         new CatchModNoFail(),
-                        new CatchModHalfTime(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new CatchModHalfTime(),
+                                new CatchModDaycore(),
+                            },
+                        },
                     };
 
                 case ModType.DifficultyIncrease:

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

@@ -32,6 +32,11 @@ namespace osu.Game.Rulesets.Catch.Mods
 
     }
 
+    public class CatchModDaycore : ModDaycore
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
     public class CatchModDoubleTime : ModDoubleTime
     {
         public override double ScoreMultiplier => 1.06;

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

@@ -33,8 +33,9 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="OpenTK, Version=2.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.2.0.50727.1341\lib\net45\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.3.0\lib\net45\OpenTK.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />

osu.Game.Rulesets.Catch/packages.config

@@ -5,5 +5,5 @@ Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 -->
 <packages>
-  <package id="ppy.OpenTK" version="2.0.50727.1341" targetFramework="net45" />
+  <package id="ppy.OpenTK" version="3.0" targetFramework="net45" />
 </packages>

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

@@ -11,11 +11,19 @@ using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Mania.Beatmaps.Patterns;
 using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Database;
+using osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy;
+using OpenTK;
+using osu.Game.Audio;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
     public class ManiaBeatmapConverter : BeatmapConverter<ManiaHitObject>
     {
+        /// <summary>
+        /// Maximum number of previous notes to consider for density calculation.
+        /// </summary>
+        private const int max_notes_for_density = 7;
+
         protected override IEnumerable<Type> ValidConversionTypes { get; } = new[] { typeof(IHasXPosition) };
 
         private Pattern lastPattern = new Pattern();
@@ -55,6 +63,26 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 yield return obj;
         }
 
+        private readonly List<double> prevNoteTimes = new List<double>(max_notes_for_density);
+        private double density = int.MaxValue;
+        private void computeDensity(double newNoteTime)
+        {
+            if (prevNoteTimes.Count == max_notes_for_density)
+                prevNoteTimes.RemoveAt(0);
+            prevNoteTimes.Add(newNoteTime);
+
+            density = (prevNoteTimes[prevNoteTimes.Count - 1] - prevNoteTimes[0]) / prevNoteTimes.Count;
+        }
+
+        private double lastTime;
+        private Vector2 lastPosition;
+        private PatternType lastStair;
+        private void recordNote(double time, Vector2 position)
+        {
+            lastTime = time;
+            lastPosition = position;
+        }
+
         /// <summary>
         /// Method that generates hit objects for osu!mania specific beatmaps.
         /// </summary>
@@ -83,28 +111,31 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
             // Following lines currently commented out to appease resharper
 
-            //Patterns.PatternGenerator conversion = null;
+            Patterns.PatternGenerator conversion = null;
 
             if (distanceData != null)
-            {
-                // Slider
-            }
+                conversion = new DistanceObjectPatternGenerator(random, original, beatmap, lastPattern);
             else if (endTimeData != null)
-            {
-                // Spinner
-            }
+                conversion = new EndTimeObjectPatternGenerator(random, original, beatmap);
             else if (positionData != null)
             {
-                // Circle
+                computeDensity(original.StartTime);
+
+                conversion = new HitObjectPatternGenerator(random, original, beatmap, lastPattern, lastTime, lastPosition, density, lastStair);
+
+                recordNote(original.StartTime, positionData.Position);
             }
 
-            //if (conversion == null)
-            return null;
+            if (conversion == null)
+                return null;
 
-            //Pattern newPattern = conversion.Generate();
-            //lastPattern = newPattern;
+            Pattern newPattern = conversion.Generate();
+            lastPattern = newPattern;
 
-            //return newPattern.HitObjects;
+            var stairPatternGenerator = (HitObjectPatternGenerator)conversion;
+            lastStair = stairPatternGenerator.StairType;
+
+            return newPattern.HitObjects;
         }
 
         /// <summary>
@@ -131,9 +162,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                     pattern.Add(new HoldNote
                     {
                         StartTime = HitObject.StartTime,
-                        Samples = HitObject.Samples,
                         Duration = endTimeData.Duration,
                         Column = column,
+                        Head = { Samples = sampleInfoListAt(HitObject.StartTime) },
+                        Tail = { Samples = sampleInfoListAt(endTimeData.EndTime) },
                     });
                 }
                 else if (positionData != null)
@@ -148,6 +180,24 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 return pattern;
             }
+
+            /// <summary>
+            /// Retrieves the sample info list at a point in time.
+            /// </summary>
+            /// <param name="time">The time to retrieve the sample info list from.</param>
+            /// <returns></returns>
+            private SampleInfoList sampleInfoListAt(double time)
+            {
+                var curveData = HitObject as IHasCurve;
+
+                if (curveData == null)
+                    return HitObject.Samples;
+
+                double segmentTime = (curveData.EndTime - HitObject.StartTime) / curveData.RepeatCount;
+
+                int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
+                return curveData.RepeatSamples[index];
+            }
         }
     }
 }

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

@@ -0,0 +1,488 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Mania.MathUtils;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Beatmaps.ControlPoints;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
+{
+    /// <summary>
+    /// A pattern generator for IHasDistance hit objects.
+    /// </summary>
+    internal class DistanceObjectPatternGenerator : PatternGenerator
+    {
+        /// <summary>
+        /// Base osu! slider scoring distance.
+        /// </summary>
+        private const float osu_base_scoring_distance = 100;
+
+        private readonly double endTime;
+        private readonly double segmentDuration;
+        private readonly int repeatCount;
+
+        private PatternType convertType;
+
+        public DistanceObjectPatternGenerator(FastRandom random, HitObject hitObject, Beatmap beatmap, Pattern previousPattern)
+            : base(random, hitObject, beatmap, previousPattern)
+        {
+            convertType = PatternType.None;
+            if (Beatmap.ControlPointInfo.EffectPointAt(hitObject.StartTime).KiaiMode)
+                convertType = PatternType.LowProbability;
+
+            var distanceData = hitObject as IHasDistance;
+            var repeatsData = hitObject as IHasRepeats;
+
+            repeatCount = repeatsData?.RepeatCount ?? 1;
+
+            TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
+            DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
+
+            // The true distance, accounting for any repeats
+            double distance = (distanceData?.Distance ?? 0) * repeatCount;
+            // The velocity of the osu! hit object - calculated as the velocity of a slider
+            double osuVelocity = osu_base_scoring_distance * beatmap.BeatmapInfo.Difficulty.SliderMultiplier / (timingPoint.BeatLength * difficultyPoint.SpeedMultiplier);
+            // The duration of the osu! hit object
+            double osuDuration = distance / osuVelocity;
+
+            endTime = hitObject.StartTime + osuDuration;
+            segmentDuration = (endTime - HitObject.StartTime) / repeatCount;
+        }
+
+        public override Pattern Generate()
+        {
+            if (repeatCount > 1)
+            {
+                if (segmentDuration <= 90)
+                    return generateRandomHoldNotes(HitObject.StartTime, 1);
+
+                if (segmentDuration <= 120)
+                {
+                    convertType |= PatternType.ForceNotStack;
+                    return generateRandomNotes(HitObject.StartTime, repeatCount + 1);
+                }
+
+                if (segmentDuration <= 160)
+                    return generateStair(HitObject.StartTime);
+
+                if (segmentDuration <= 200 && ConversionDifficulty > 3)
+                    return generateRandomMultipleNotes(HitObject.StartTime);
+
+                double duration = endTime - HitObject.StartTime;
+                if (duration >= 4000)
+                    return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
+
+                if (segmentDuration > 400 && repeatCount < AvailableColumns - 1 - RandomStart)
+                    return generateTiledHoldNotes(HitObject.StartTime);
+
+                return generateHoldAndNormalNotes(HitObject.StartTime);
+            }
+
+            if (segmentDuration <= 110)
+            {
+                if (PreviousPattern.ColumnWithObjects < AvailableColumns)
+                    convertType |= PatternType.ForceNotStack;
+                else
+                    convertType &= ~PatternType.ForceNotStack;
+                return generateRandomNotes(HitObject.StartTime, segmentDuration < 80 ? 1 : 2);
+            }
+
+            if (ConversionDifficulty > 6.5)
+            {
+                if ((convertType & PatternType.LowProbability) > 0)
+                    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)
+                    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)
+                    return generateNRandomNotes(HitObject.StartTime, 0.3, 0, 0);
+                return generateNRandomNotes(HitObject.StartTime, 0.37, 0.08, 0);
+            }
+
+            if ((convertType & PatternType.LowProbability) > 0)
+                return generateNRandomNotes(HitObject.StartTime, 0.17, 0, 0);
+            return generateNRandomNotes(HitObject.StartTime, 0.27, 0, 0);
+        }
+
+        /// <summary>
+        /// Generates random hold notes that start at an span the same amount of rows.
+        /// </summary>
+        /// <param name="startTime">Start time of each hold note.</param>
+        /// <param name="noteCount">Number of hold notes.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomHoldNotes(double startTime, int noteCount)
+        {
+            // - - - -
+            // ■ - ■ ■
+            // □ - □ □
+            // ■ - ■ ■
+
+            var pattern = new Pattern();
+
+            int usableColumns = AvailableColumns - RandomStart - PreviousPattern.ColumnWithObjects;
+            int nextColumn = Random.Next(RandomStart, AvailableColumns);
+            for (int i = 0; i < Math.Min(usableColumns, noteCount); i++)
+            {
+                while (pattern.ColumnHasObject(nextColumn) || PreviousPattern.ColumnHasObject(nextColumn))  //find available column
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+                addToPattern(pattern, nextColumn, startTime, endTime);
+            }
+
+            // This is can't be combined with the above loop due to RNG
+            for (int i = 0; i < noteCount - usableColumns; i++)
+            {
+                while (pattern.ColumnHasObject(nextColumn))
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+                addToPattern(pattern, nextColumn, startTime, endTime);
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates random notes, with one note per row and no stacking.
+        /// </summary>
+        /// <param name="startTime">The start time.</param>
+        /// <param name="noteCount">The number of notes.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomNotes(double startTime, int noteCount)
+        {
+            // - - - -
+            // x - - -
+            // - - x -
+            // - - - x
+            // x - - -
+
+            var pattern = new Pattern();
+
+            int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < AvailableColumns)
+            {
+                while (PreviousPattern.ColumnHasObject(nextColumn))
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+            }
+
+            int lastColumn = nextColumn;
+            for (int i = 0; i < noteCount; i++)
+            {
+                addToPattern(pattern, nextColumn, startTime, startTime);
+                while (nextColumn == lastColumn)
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+
+                lastColumn = nextColumn;
+                startTime += segmentDuration;
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates a stair of notes, with one note per row.
+        /// </summary>
+        /// <param name="startTime">The start time.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateStair(double startTime)
+        {
+            // - - - -
+            // x - - -
+            // - x - -
+            // - - x -
+            // - - - x
+            // - - x -
+            // - x - -
+            // x - - -
+
+            var pattern = new Pattern();
+
+            int column = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            bool increasing = Random.NextDouble() > 0.5;
+
+            for (int i = 0; i <= repeatCount; i++)
+            {
+                addToPattern(pattern, column, startTime, startTime);
+                startTime += segmentDuration;
+
+                // Check if we're at the borders of the stage, and invert the pattern if so
+                if (increasing)
+                {
+                    if (column >= AvailableColumns - 1)
+                    {
+                        increasing = false;
+                        column--;
+                    }
+                    else
+                        column++;
+                }
+                else
+                {
+                    if (column <= RandomStart)
+                    {
+                        increasing = true;
+                        column++;
+                    }
+                    else
+                        column--;
+                }
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates random notes with 1-2 notes per row and no stacking.
+        /// </summary>
+        /// <param name="startTime">The start time.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomMultipleNotes(double startTime)
+        {
+            // - - - -
+            // x - - -
+            // - x x -
+            // - - - x
+            // x - x -
+
+            var pattern = new Pattern();
+
+            bool legacy = AvailableColumns >= 4 && AvailableColumns <= 8;
+            int interval = Random.Next(1, AvailableColumns - (legacy ? 1 : 0));
+
+            int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            for (int i = 0; i <= repeatCount; i++)
+            {
+                addToPattern(pattern, nextColumn, startTime, startTime);
+
+                nextColumn += interval;
+                if (nextColumn >= AvailableColumns - RandomStart)
+                    nextColumn = nextColumn - AvailableColumns - RandomStart + (legacy ? 1 : 0);
+                nextColumn += RandomStart;
+
+                // If we're in 2K, let's not add many consecutive doubles
+                if (AvailableColumns > 2)
+                    addToPattern(pattern, nextColumn, startTime, startTime);
+
+                nextColumn = Random.Next(RandomStart, AvailableColumns);
+                startTime += segmentDuration;
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates random hold notes. The amount of hold notes generated is determined by probabilities.
+        /// </summary>
+        /// <param name="startTime">The hold note start time.</param>
+        /// <param name="p2">The probability required for 2 hold notes to be generated.</param>
+        /// <param name="p3">The probability required for 3 hold notes to be generated.</param>
+        /// <param name="p4">The probability required for 4 hold notes to be generated.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateNRandomNotes(double startTime, double p2, double p3, double p4)
+        {
+            // - - - -
+            // ■ - ■ ■
+            // □ - □ □
+            // ■ - ■ ■
+
+            switch (AvailableColumns)
+            {
+                case 2:
+                    p2 = 0;
+                    p3 = 0;
+                    p4 = 0;
+                    break;
+                case 3:
+                    p2 = Math.Max(p2, 0.1);
+                    p3 = 0;
+                    p4 = 0;
+                    break;
+                case 4:
+                    p2 = Math.Max(p2, 0.3);
+                    p3 = Math.Max(p3, 0.04);
+                    p4 = 0;
+                    break;
+                case 5:
+                    p2 = Math.Max(p2, 0.34);
+                    p3 = Math.Max(p3, 0.1);
+                    p4 = Math.Max(p4, 0.03);
+                    break;
+            }
+
+            Func<SampleInfo, bool> isDoubleSample = sample => sample.Name == SampleInfo.HIT_CLAP && sample.Name == SampleInfo.HIT_FINISH;
+
+            bool canGenerateTwoNotes = (convertType & PatternType.LowProbability) == 0;
+            canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);
+
+            if (canGenerateTwoNotes)
+                p2 = 1;
+
+            return generateRandomHoldNotes(startTime, GetRandomNoteCount(p2, p3, p4));
+        }
+
+        /// <summary>
+        /// Generates tiled hold notes. You can think of this as a stair of hold notes.
+        /// </summary>
+        /// <param name="startTime">The first hold note start time.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateTiledHoldNotes(double startTime)
+        {
+            // - - - -
+            // ■ ■ ■ ■
+            // □ □ □ □
+            // □ □ □ □
+            // □ □ □ ■
+            // □ □ ■ -
+            // □ ■ - -
+            // ■ - - -
+
+            var pattern = new Pattern();
+
+            int columnRepeat = Math.Min(repeatCount, AvailableColumns);
+
+            int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < AvailableColumns)
+            {
+                while (PreviousPattern.ColumnHasObject(nextColumn))
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+            }
+
+            for (int i = 0; i < columnRepeat; i++)
+            {
+                while (pattern.ColumnHasObject(nextColumn))
+                    nextColumn = Random.Next(RandomStart, AvailableColumns);
+
+                addToPattern(pattern, nextColumn, startTime, endTime);
+                startTime += segmentDuration;
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates a hold note alongside normal notes.
+        /// </summary>
+        /// <param name="startTime">The start time of notes.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateHoldAndNormalNotes(double startTime)
+        {
+            // - - - -
+            // ■ x x -
+            // ■ - x x
+            // ■ x - x
+            // ■ - x x
+
+            var pattern = new Pattern();
+
+            int holdColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            if ((convertType & PatternType.ForceNotStack) > 0 && PreviousPattern.ColumnWithObjects < AvailableColumns)
+            {
+                while (PreviousPattern.ColumnHasObject(holdColumn))
+                    holdColumn = Random.Next(RandomStart, AvailableColumns);
+            }
+
+            // Create the hold note
+            addToPattern(pattern, holdColumn, startTime, endTime);
+
+            int noteCount = 1;
+            if (ConversionDifficulty > 6.5)
+                noteCount = GetRandomNoteCount(0.63, 0);
+            else if (ConversionDifficulty > 4)
+                noteCount = GetRandomNoteCount(AvailableColumns < 6 ? 0.12 : 0.45, 0);
+            else if (ConversionDifficulty > 2.5)
+                noteCount = GetRandomNoteCount(AvailableColumns < 6 ? 0 : 0.24, 0);
+            noteCount = Math.Min(AvailableColumns - 1, noteCount);
+
+            bool ignoreHead = !sampleInfoListAt(startTime).Any(s => s.Name == SampleInfo.HIT_WHISTLE || s.Name == SampleInfo.HIT_FINISH || s.Name == SampleInfo.HIT_CLAP);
+            int nextColumn = Random.Next(RandomStart, AvailableColumns);
+
+            var rowPattern = new Pattern();
+            for (int i = 0; i <= repeatCount; i++)
+            {
+                if (!(ignoreHead && startTime == HitObject.StartTime))
+                {
+                    for (int j = 0; j < noteCount; j++)
+                    {
+                        while (rowPattern.ColumnHasObject(nextColumn) || nextColumn == holdColumn)
+                            nextColumn = Random.Next(RandomStart, AvailableColumns);
+                        addToPattern(rowPattern, nextColumn, startTime, startTime);
+                    }
+                }
+
+                pattern.Add(rowPattern);
+                rowPattern.Clear();
+
+                startTime += segmentDuration;
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Retrieves the sample info list at a point in time.
+        /// </summary>
+        /// <param name="time">The time to retrieve the sample info list from.</param>
+        /// <returns></returns>
+        private SampleInfoList sampleInfoListAt(double time)
+        {
+            var curveData = HitObject as IHasCurve;
+
+            if (curveData == null)
+                return HitObject.Samples;
+
+            double segmentTime = (endTime - HitObject.StartTime) / repeatCount;
+
+            int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
+            return curveData.RepeatSamples[index];
+        }
+
+        /// <summary>
+        /// Constructs and adds a note to a pattern.
+        /// </summary>
+        /// <param name="pattern">The pattern to add to.</param>
+        /// <param name="column">The column to add the note to.</param>
+        /// <param name="startTime">The start time of the note.</param>
+        /// <param name="endTime">The end time of the note (set to <paramref name="startTime"/> for a non-hold note).</param>
+        private void addToPattern(Pattern pattern, int column, double startTime, double endTime)
+        {
+            ManiaHitObject newObject;
+
+            if (startTime == endTime)
+            {
+                newObject = new Note
+                {
+                    StartTime = startTime,
+                    Samples = sampleInfoListAt(startTime),
+                    Column = column
+                };
+            }
+            else
+            {
+                var holdNote = new HoldNote
+                {
+                    StartTime = startTime,
+                    Column = column,
+                    Duration = endTime - startTime,
+                    Head = { Samples = sampleInfoListAt(startTime) },
+                    Tail = { Samples = sampleInfoListAt(endTime) }
+                };
+
+                newObject = holdNote;
+            }
+
+            pattern.Add(newObject);
+        }
+    }
+}

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

@@ -0,0 +1,101 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Mania.MathUtils;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using System.Linq;
+using osu.Game.Audio;
+using osu.Game.Rulesets.Mania.Objects;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
+{
+    internal class EndTimeObjectPatternGenerator : PatternGenerator
+    {
+        private readonly double endTime;
+
+        public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, Beatmap beatmap)
+            : base(random, hitObject, beatmap, new Pattern())
+        {
+            var endtimeData = HitObject as IHasEndTime;
+
+            endTime = endtimeData?.EndTime ?? 0;
+        }
+
+        public override Pattern Generate()
+        {
+            var pattern = new Pattern();
+
+            bool generateHold = endTime - HitObject.StartTime >= 100;
+
+            if (AvailableColumns == 8)
+            {
+                if (HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_FINISH) && endTime - HitObject.StartTime < 1000)
+                    addToPattern(pattern, 0, generateHold);
+                else
+                    addToPattern(pattern, getNextRandomColumn(RandomStart), generateHold);
+            }
+            else if (AvailableColumns > 0)
+                addToPattern(pattern, getNextRandomColumn(0), generateHold);
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Picks a random column after a column.
+        /// </summary>
+        /// <param name="start">The starting column.</param>
+        /// <returns>A random column after <paramref name="start"/>.</returns>
+        private int getNextRandomColumn(int start)
+        {
+            int nextColumn = Random.Next(start, AvailableColumns);
+
+            while (PreviousPattern.ColumnHasObject(nextColumn))
+                nextColumn = Random.Next(start, AvailableColumns);
+
+            return nextColumn;
+        }
+
+        /// <summary>
+        /// Constructs and adds a note to a pattern.
+        /// </summary>
+        /// <param name="pattern">The pattern to add to.</param>
+        /// <param name="column">The column to add the note to.</param>
+        /// <param name="holdNote">Whether to add a hold note.</param>
+        private void addToPattern(Pattern pattern, int column, bool holdNote)
+        {
+            ManiaHitObject newObject;
+
+            if (holdNote)
+            {
+                var hold = new HoldNote
+                {
+                    StartTime = HitObject.StartTime,
+                    Column = column,
+                    Duration = endTime - HitObject.StartTime
+                };
+
+                hold.Head.Samples.Add(new SampleInfo
+                {
+                    Name = SampleInfo.HIT_NORMAL
+                });
+
+                hold.Tail.Samples = HitObject.Samples;
+
+                newObject = hold;
+            }
+            else
+            {
+                newObject = new Note
+                {
+                    StartTime = HitObject.StartTime,
+                    Samples = HitObject.Samples,
+                    Column = column
+                };
+            }
+
+            pattern.Add(newObject);
+        }
+    }
+}

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

@@ -0,0 +1,404 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using OpenTK;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Mania.MathUtils;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
+{
+    internal class HitObjectPatternGenerator : PatternGenerator
+    {
+        public PatternType StairType { get; private set; }
+
+        private readonly PatternType convertType;
+
+        public HitObjectPatternGenerator(FastRandom random, HitObject hitObject, Beatmap beatmap, Pattern previousPattern, double previousTime, Vector2 previousPosition, double density, PatternType lastStair)
+            : base(random, hitObject, beatmap, previousPattern)
+        {
+            StairType = lastStair;
+
+            TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
+            EffectControlPoint effectPoint = beatmap.ControlPointInfo.EffectPointAt(hitObject.StartTime);
+
+            var positionData = hitObject as IHasPosition;
+
+            float positionSeparation = ((positionData?.Position ?? Vector2.Zero) - previousPosition).Length;
+            double timeSeparation = hitObject.StartTime - previousTime;
+
+            if (timeSeparation <= 125)
+            {
+                // More than 120 BPM
+                convertType |= PatternType.ForceNotStack;
+            }
+
+            if (timeSeparation <= 80)
+            {
+                // More than 187 BPM
+                convertType |= PatternType.ForceNotStack | PatternType.KeepSingle;
+            }
+            else if (timeSeparation <= 95)
+            {
+                // More than 157 BPM
+                convertType |= PatternType.ForceNotStack | PatternType.KeepSingle | lastStair;
+            }
+            else if (timeSeparation <= 105)
+            {
+                // More than 140 BPM
+                convertType |= PatternType.ForceNotStack | PatternType.LowProbability;
+            }
+            else if (timeSeparation <= 125)
+            {
+                // More than 120 BPM
+                convertType |= PatternType.ForceNotStack;
+            }
+            else if (timeSeparation <= 135 && positionSeparation < 20)
+            {
+                // More than 111 BPM stream
+                convertType |= PatternType.Cycle | PatternType.KeepSingle;
+            }
+            else if (timeSeparation <= 150 & positionSeparation < 20)
+            {
+                // More than 100 BPM stream
+                convertType |= PatternType.ForceStack | PatternType.LowProbability;
+            }
+            else if (positionSeparation < 20 && density >= timingPoint.BeatLength / 2.5)
+            {
+                // Low density stream
+                convertType |= PatternType.Reverse | PatternType.LowProbability;
+            }
+            else if (density < timingPoint.BeatLength / 2.5 || effectPoint.KiaiMode)
+            {
+                // High density
+            }
+            else
+                convertType |= PatternType.LowProbability;
+        }
+
+        public override Pattern Generate()
+        {
+            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 < AvailableColumns; i++)
+                    if (PreviousPattern.ColumnHasObject(i))
+                        addToPattern(pattern, RandomStart + AvailableColumns - 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
+                && (AvailableColumns != 8 || lastColumn != 0)
+                // Make sure the last column was not the centre column
+                && (AvailableColumns % 2 == 0 || lastColumn != AvailableColumns / 2))
+            {
+                // Generate a new pattern by cycling backwards (similar to Reverse but for only one hit object)
+                var pattern = new Pattern();
+
+                int column = RandomStart + AvailableColumns - 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 < AvailableColumns; 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 == AvailableColumns)
+                {
+                    targetColumn = RandomStart;
+                    StairType = PatternType.ReverseStair;
+                }
+
+                addToPattern(pattern, targetColumn);
+                return pattern;
+            }
+
+            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)
+                {
+                    targetColumn = AvailableColumns - 1;
+                    StairType = PatternType.Stair;
+                }
+
+                addToPattern(pattern, targetColumn);
+                return pattern;
+            }
+
+            if ((convertType & PatternType.KeepSingle) > 0)
+                return generateRandomNotes(1);
+
+            if ((convertType & PatternType.Mirror) > 0)
+            {
+                if (ConversionDifficulty > 6.5)
+                    return generateRandomPatternWithMirrored(0.12, 0.38, 0.12);
+                if (ConversionDifficulty > 4)
+                    return generateRandomPatternWithMirrored(0.12, 0.17, 0);
+                return generateRandomPatternWithMirrored(0.12, 0, 0);
+            }
+
+            if (ConversionDifficulty > 6.5)
+            {
+                if ((convertType & PatternType.LowProbability) > 0)
+                    return generateRandomPattern(0.78, 0.42, 0, 0);
+                return generateRandomPattern(1, 0.62, 0, 0);
+            }
+
+            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>
+        /// Generates random notes.
+        /// <para>
+        /// This will generate as many as it can up to <paramref name="noteCount"/>, accounting for
+        /// any stacks if <see cref="convertType"/> is forcing no stacks.
+        /// </para>
+        /// </summary>
+        /// <param name="noteCount">The amount of notes to generate.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomNotes(int noteCount)
+        {
+            var pattern = new Pattern();
+
+            bool allowStacking = (convertType & PatternType.ForceNotStack) == 0;
+
+            if (!allowStacking)
+                noteCount = Math.Min(noteCount, AvailableColumns - RandomStart - PreviousPattern.ColumnWithObjects);
+
+            int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
+            for (int i = 0; i < noteCount; i++)
+            {
+                while (pattern.ColumnHasObject(nextColumn) || PreviousPattern.ColumnHasObject(nextColumn) && !allowStacking)
+                {
+                    if ((convertType & PatternType.Gathered) > 0)
+                    {
+                        nextColumn++;
+                        if (nextColumn == AvailableColumns)
+                            nextColumn = RandomStart;
+                    }
+                    else
+                        nextColumn = Random.Next(RandomStart, AvailableColumns);
+                }
+
+                addToPattern(pattern, nextColumn);
+            }
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Whether this hit object can generate a note in the special column.
+        /// </summary>
+        private bool hasSpecialColumn => HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_CLAP) && HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_FINISH);
+
+        /// <summary>
+        /// Generates a random pattern.
+        /// </summary>
+        /// <param name="p2">Probability for 2 notes to be generated.</param>
+        /// <param name="p3">Probability for 3 notes to be generated.</param>
+        /// <param name="p4">Probability for 4 notes to be generated.</param>
+        /// <param name="p5">Probability for 5 notes to be generated.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomPattern(double p2, double p3, double p4, double p5)
+        {
+            var pattern = new Pattern();
+
+            pattern.Add(generateRandomNotes(getRandomNoteCount(p2, p3, p4, p5)));
+
+            if (RandomStart > 0 && hasSpecialColumn)
+                addToPattern(pattern, 0);
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates a random pattern which has both normal and mirrored notes.
+        /// </summary>
+        /// <param name="centreProbability">The probability for a note to be added to the centre column.</param>
+        /// <param name="p2">Probability for 2 notes to be generated.</param>
+        /// <param name="p3">Probability for 3 notes to be generated.</param>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        private Pattern generateRandomPatternWithMirrored(double centreProbability, double p2, double p3)
+        {
+            var pattern = new Pattern();
+
+            bool addToCentre;
+            int noteCount = getRandomNoteCountMirrored(centreProbability, p2, p3, out addToCentre);
+
+            int columnLimit = (AvailableColumns % 2 == 0 ? AvailableColumns : AvailableColumns - 1) / 2;
+            int nextColumn = Random.Next(RandomStart, columnLimit);
+            for (int i = 0; i < noteCount; i++)
+            {
+                while (pattern.ColumnHasObject(nextColumn))
+                    nextColumn = Random.Next(RandomStart, columnLimit);
+
+                // Add normal note
+                addToPattern(pattern, nextColumn);
+                // Add mirrored note
+                addToPattern(pattern, RandomStart + AvailableColumns - nextColumn - 1);
+            }
+
+            if (addToCentre)
+                addToPattern(pattern, AvailableColumns / 2);
+
+            if (RandomStart > 0 && hasSpecialColumn)
+                addToPattern(pattern, 0);
+
+            return pattern;
+        }
+
+        /// <summary>
+        /// Generates a count of notes to be generated from a list of probabilities.
+        /// </summary>
+        /// <param name="p2">Probability for 2 notes to be generated.</param>
+        /// <param name="p3">Probability for 3 notes to be generated.</param>
+        /// <param name="p4">Probability for 4 notes to be generated.</param>
+        /// <param name="p5">Probability for 5 notes to be generated.</param>
+        /// <returns>The amount of notes to be generated.</returns>
+        private int getRandomNoteCount(double p2, double p3, double p4, double p5)
+        {
+            switch (AvailableColumns)
+            {
+                case 2:
+                    p2 = 0;
+                    p3 = 0;
+                    p4 = 0;
+                    p5 = 0;
+                    break;
+                case 3:
+                    p2 = Math.Max(p2, 0.1);
+                    p3 = 0;
+                    p4 = 0;
+                    p5 = 0;
+                    break;
+                case 4:
+                    p2 = Math.Max(p2, 0.23);
+                    p3 = Math.Max(p3, 0.04);
+                    p4 = 0;
+                    p5 = 0;
+                    break;
+                case 5:
+                    p3 = Math.Max(p3, 0.15);
+                    p4 = Math.Max(p4, 0.03);
+                    p5 = 0;
+                    break;
+            }
+
+            if (HitObject.Samples.Any(s => s.Name == SampleInfo.HIT_CLAP))
+                p2 = 1;
+
+            return GetRandomNoteCount(p2, p3, p4, p5);
+        }
+
+        /// <summary>
+        /// Generates a count of notes to be generated from a list of probabilities.
+        /// </summary>
+        /// <param name="centreProbability">The probability for a note to be added to the centre column.</param>
+        /// <param name="p2">Probability for 2 notes to be generated.</param>
+        /// <param name="p3">Probability for 3 notes to be generated.</param>
+        /// <param name="addToCentre">Whether to add a note to the centre column.</param>
+        /// <returns>The amount of notes to be generated. The note to be added to the centre column will NOT be part of this count.</returns>
+        private int getRandomNoteCountMirrored(double centreProbability, double p2, double p3, out bool addToCentre)
+        {
+            addToCentre = false;
+
+            if ((convertType & PatternType.ForceNotStack) > 0)
+                return getRandomNoteCount(p2 / 2, p2, (p2 + p3) / 2, p3);
+
+            switch (AvailableColumns)
+            {
+                case 2:
+                    centreProbability = 0;
+                    p2 = 0;
+                    p3 = 0;
+                    break;
+                case 3:
+                    centreProbability = Math.Max(centreProbability, 0.03);
+                    p2 = Math.Max(p2, 0.1);
+                    p3 = 0;
+                    break;
+                case 4:
+                    centreProbability = 0;
+                    p2 = Math.Max(p2 * 2, 0.2);
+                    p3 = 0;
+                    break;
+                case 5:
+                    centreProbability = Math.Max(centreProbability, 0.03);
+                    p3 = 0;
+                    break;
+                case 6:
+                    centreProbability = 0;
+                    p2 = Math.Max(p2 * 2, 0.5);
+                    p3 = Math.Max(p3 * 2, 0.15);
+                    break;
+            }
+
+            double centreVal = Random.NextDouble();
+            int noteCount = GetRandomNoteCount(p2, p3);
+
+            addToCentre = AvailableColumns % 2 != 0 && noteCount != 3 && centreVal > 1 - centreProbability;
+            return noteCount;
+        }
+
+        /// <summary>
+        /// Constructs and adds a note to a pattern.
+        /// </summary>
+        /// <param name="pattern">The pattern to add to.</param>
+        /// <param name="column">The column to add the note to.</param>
+        private void addToPattern(Pattern pattern, int column)
+        {
+            pattern.Add(new Note
+            {
+                StartTime = HitObject.StartTime,
+                Samples = HitObject.Samples,
+                Column = column
+            });
+        }
+    }
+}

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

@@ -90,7 +90,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 HitObject firstObject = Beatmap.HitObjects.FirstOrDefault();
 
                 double drainTime = (lastObject?.StartTime ?? 0) - (firstObject?.StartTime ?? 0);
-                drainTime -= Beatmap.EventInfo.TotalBreakTime;
+                drainTime -= Beatmap.TotalBreakTime;
 
                 if (drainTime == 0)
                     drainTime = 10000;

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

@@ -15,51 +15,51 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <summary>
         /// Keep the same as last row.
         /// </summary>
-        ForceStack = 1,
+        ForceStack = 1 << 0,
         /// <summary>
         /// Keep different from last row.
         /// </summary>
-        ForceNotStack = 2,
+        ForceNotStack = 1 << 1,
         /// <summary>
         /// Keep as single note at its original position.
         /// </summary>
-        KeepSingle = 4,
+        KeepSingle = 1 << 2,
         /// <summary>
         /// Use a lower random value.
         /// </summary>
-        LowProbability = 8,
+        LowProbability = 1 << 3,
         /// <summary>
         /// Reserved.
         /// </summary>
-        Alternate = 16,
+        Alternate = 1 << 4,
         /// <summary>
         /// Ignore the repeat count.
         /// </summary>
-        ForceSigSlider = 32,
+        ForceSigSlider = 1 << 5,
         /// <summary>
         /// Convert slider to circle.
         /// </summary>
-        ForceNotSlider = 64,
+        ForceNotSlider = 1 << 6,
         /// <summary>
         /// Notes gathered together.
         /// </summary>
-        Gathered = 128,
-        Mirror = 256,
+        Gathered = 1 << 7,
+        Mirror = 1 << 8,
         /// <summary>
         /// Change 0 -> 6.
         /// </summary>
-        Reverse = 512,
+        Reverse = 1 << 9,
         /// <summary>
         /// 1 -> 5 -> 1 -> 5 like reverse.
         /// </summary>
-        Cycle = 1024,
+        Cycle = 1 << 10,
         /// <summary>
         /// Next note will be at column + 1.
         /// </summary>
-        Stair = 2048,
+        Stair = 1 << 11,
         /// <summary>
         /// Next note will be at column - 1.
         /// </summary>
-        ReverseStair = 4096
+        ReverseStair = 1 << 12
     }
 }

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

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Game.Rulesets.Mania.Objects;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
@@ -21,16 +20,16 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
         public IEnumerable<ManiaHitObject> HitObjects => hitObjects;
 
         /// <summary>
-        /// Whether this pattern already contains a hit object in a code.
+        /// Check whether a column of this patterns contains a hit object.
         /// </summary>
         /// <param name="column">The column index.</param>
-        /// <returns>Whether this pattern already contains a hit object in <paramref name="column"/></returns>
-        public bool IsFilled(int column) => hitObjects.Exists(h => h.Column == column);
+        /// <returns>Whether the column with index <paramref name="column"/> contains a hit object.</returns>
+        public bool ColumnHasObject(int column) => hitObjects.Exists(h => h.Column == column);
 
         /// <summary>
         /// Amount of columns taken up by hit objects in this pattern.
         /// </summary>
-        public int ColumnsFilled => HitObjects.GroupBy(h => h.Column).Count();
+        public int ColumnWithObjects => HitObjects.GroupBy(h => h.Column).Count();
 
         /// <summary>
         /// Adds a hit object to this pattern.
@@ -42,10 +41,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
         /// Copies hit object from another pattern to this one.
         /// </summary>
         /// <param name="other">The other pattern.</param>
-        public void Add(Pattern other)
-        {
-            other.HitObjects.ForEach(Add);
-        }
+        public void Add(Pattern other) => hitObjects.AddRange(other.HitObjects);
 
         /// <summary>
         /// Clears this pattern, removing all hit objects.

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

@@ -140,6 +140,26 @@ namespace osu.Game.Rulesets.Mania.Judgements
             Miss = BeatmapDifficulty.DifficultyRange(difficulty, miss_max, miss_mid, miss_min);
         }
 
+        /// <summary>
+        /// Retrieves the hit result for a time offset.
+        /// </summary>
+        /// <param name="hitOffset">The time offset.</param>
+        /// <returns>The hit result, or null if the time offset results in a miss.</returns>
+        public ManiaHitResult? ResultFor(double hitOffset)
+        {
+            if (hitOffset <= Perfect / 2)
+                return ManiaHitResult.Perfect;
+            if (hitOffset <= Great / 2)
+                return ManiaHitResult.Great;
+            if (hitOffset <= Good / 2)
+                return ManiaHitResult.Good;
+            if (hitOffset <= Ok / 2)
+                return ManiaHitResult.Ok;
+            if (hitOffset <= Bad / 2)
+                return ManiaHitResult.Bad;
+            return null;
+        }
+
         /// <summary>
         /// Constructs new hit windows which have been multiplied by a value.
         /// </summary>

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

@@ -0,0 +1,37 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Mania.Judgements
+{
+    public class HoldNoteTailJudgement : ManiaJudgement
+    {
+        /// <summary>
+        /// Whether the hold note has been released too early and shouldn't give full score for the release.
+        /// </summary>
+        public bool HasBroken;
+
+        public override int NumericResultForScore(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return base.NumericResultForScore(result);
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return base.NumericResultForScore(HasBroken ? ManiaHitResult.Good : result);
+            }
+        }
+
+        public override int NumericResultForAccuracy(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return base.NumericResultForAccuracy(result);
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return base.NumericResultForAccuracy(HasBroken ? ManiaHitResult.Good : result);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,13 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Mania.Judgements
+{
+    public class HoldNoteTickJudgement : ManiaJudgement
+    {
+        public override bool AffectsCombo => false;
+
+        public override int NumericResultForScore(ManiaHitResult result) => 20;
+        public override int NumericResultForAccuracy(ManiaHitResult result) => 0; // Don't count ticks into accuracy
+    }
+}

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

@@ -0,0 +1,21 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.ComponentModel;
+
+namespace osu.Game.Rulesets.Mania.Judgements
+{
+    public enum ManiaHitResult
+    {
+        [Description("PERFECT")]
+        Perfect,
+        [Description("GREAT")]
+        Great,
+        [Description("GOOD")]
+        Good,
+        [Description("OK")]
+        Ok,
+        [Description("BAD")]
+        Bad
+    }
+}

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

@@ -2,13 +2,81 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.Judgements
 {
     public class ManiaJudgement : Judgement
     {
+        /// <summary>
+        /// The maximum possible hit result.
+        /// </summary>
+        public const ManiaHitResult MAX_HIT_RESULT = ManiaHitResult.Perfect;
+
+        /// <summary>
+        /// The result value for the combo portion of the score.
+        /// </summary>
+        public int ResultValueForScore => Result == HitResult.Miss ? 0 : NumericResultForScore(ManiaResult);
+
+        /// <summary>
+        /// The result value for the accuracy portion of the score.
+        /// </summary>
+        public int ResultValueForAccuracy => Result == HitResult.Miss ? 0 : NumericResultForAccuracy(ManiaResult);
+
+        /// <summary>
+        /// The maximum result value for the combo portion of the score.
+        /// </summary>
+        public int MaxResultValueForScore => NumericResultForScore(MAX_HIT_RESULT);
+
+        /// <summary>
+        /// The maximum result value for the accuracy portion of the score.
+        /// </summary>
+        public int MaxResultValueForAccuracy => NumericResultForAccuracy(MAX_HIT_RESULT);
+
         public override string ResultString => string.Empty;
 
         public override string MaxResultString => string.Empty;
+
+        /// <summary>
+        /// The hit result.
+        /// </summary>
+        public ManiaHitResult ManiaResult;
+
+        public virtual int NumericResultForScore(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case ManiaHitResult.Bad:
+                    return 50;
+                case ManiaHitResult.Ok:
+                    return 100;
+                case ManiaHitResult.Good:
+                    return 200;
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return 300;
+            }
+        }
+
+        public virtual int NumericResultForAccuracy(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case ManiaHitResult.Bad:
+                    return 50;
+                case ManiaHitResult.Ok:
+                    return 100;
+                case ManiaHitResult.Good:
+                    return 200;
+                case ManiaHitResult.Great:
+                    return 300;
+                case ManiaHitResult.Perfect:
+                    return 305;
+            }
+        }
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -27,7 +27,14 @@ namespace osu.Game.Rulesets.Mania
                     {
                         new ManiaModEasy(),
                         new ManiaModNoFail(),
-                        new ManiaModHalfTime(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ManiaModHalfTime(),
+                                new ManiaModDaycore(),
+                            },
+                        },
                     };
 
                 case ModType.DifficultyIncrease:
@@ -89,6 +96,7 @@ namespace osu.Game.Rulesets.Mania
                                 new ModCinema(),
                             },
                         },
+                        new ManiaModGravity()
                     };
 
                 default:

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

@@ -87,6 +87,5 @@ namespace osu.Game.Rulesets.Mania.MathUtils
             bitIndex++;
             return ((bitBuffer >>= 1) & 1) == 1;
         }
-
     }
 }

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

@@ -0,0 +1,23 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Timing;
+
+namespace osu.Game.Rulesets.Mania.Mods
+{
+    /// <summary>
+    /// A type of mod which generates speed adjustments that scroll the hit objects and bar lines.
+    /// </summary>
+    internal interface IGenerateSpeedAdjustments
+    {
+        /// <summary>
+        /// Applies this mod to a hit renderer.
+        /// </summary>
+        /// <param name="hitRenderer">The hit renderer to apply to.</param>
+        /// <param name="hitObjectTimingChanges">The per-column list of speed adjustments for hit objects.</param>
+        /// <param name="barlineTimingChanges">The list of speed adjustments for bar lines.</param>
+        void ApplyToHitRenderer(ManiaHitRenderer hitRenderer, ref List<SpeedAdjustmentContainer>[] hitObjectTimingChanges, ref List<SpeedAdjustmentContainer> barlineTimingChanges);
+    }
+}

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

@@ -34,6 +34,11 @@ namespace osu.Game.Rulesets.Mania.Mods
 
     }
 
+    public class ManiaModDaycore : ModDaycore
+    {
+        public override double ScoreMultiplier => 0.3;
+    }
+
     public class ManiaModDoubleTime : ModDoubleTime
     {
         public override double ScoreMultiplier => 1.0;

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

@@ -0,0 +1,46 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Mania.Timing;
+using osu.Game.Rulesets.Timing;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Mania.Mods
+{
+    public class ManiaModGravity : Mod, IGenerateSpeedAdjustments
+    {
+        public override string Name => "Gravity";
+
+        public override double ScoreMultiplier => 0;
+
+        public override FontAwesome Icon => FontAwesome.fa_sort_desc;
+
+        public void ApplyToHitRenderer(ManiaHitRenderer hitRenderer, ref List<SpeedAdjustmentContainer>[] hitObjectTimingChanges, ref List<SpeedAdjustmentContainer> barlineTimingChanges)
+        {
+            // We have to generate one speed adjustment per hit object for gravity
+            foreach (ManiaHitObject obj in hitRenderer.Objects)
+            {
+                MultiplierControlPoint controlPoint = hitRenderer.CreateControlPointAt(obj.StartTime);
+                // Beat length has too large of an effect for gravity, so we'll force it to a constant value for now
+                controlPoint.TimingPoint.BeatLength = 1000;
+
+                hitObjectTimingChanges[obj.Column].Add(new ManiaSpeedAdjustmentContainer(controlPoint, ScrollingAlgorithm.Gravity));
+            }
+
+            // Like with hit objects, we need to generate one speed adjustment per bar line
+            foreach (DrawableBarLine barLine in hitRenderer.BarLines)
+            {
+                var controlPoint = hitRenderer.CreateControlPointAt(barLine.HitObject.StartTime);
+                // Beat length has too large of an effect for gravity, so we'll force it to a constant value for now
+                controlPoint.TimingPoint.BeatLength = 1000;
+
+                barlineTimingChanges.Add(new ManiaSpeedAdjustmentContainer(controlPoint, ScrollingAlgorithm.Gravity));
+            }
+        }
+    }
+}

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

@@ -0,0 +1,21 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Beatmaps.ControlPoints;
+
+namespace osu.Game.Rulesets.Mania.Objects
+{
+    public class BarLine : ManiaHitObject
+    {
+        /// <summary>
+        /// The control point which this bar line is part of.
+        /// </summary>
+        public TimingControlPoint ControlPoint;
+
+        /// <summary>
+        /// The index of the beat which this bar line represents within the control point.
+        /// This is a "major" bar line if <see cref="BeatIndex"/> % <see cref="TimingControlPoint.TimeSignature"/> == 0.
+        /// </summary>
+        public int BeatIndex;
+    }
+}

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

@@ -0,0 +1,74 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Mania.Objects.Drawables
+{
+    /// <summary>
+    /// Visualises a <see cref="BarLine"/>. Although this derives DrawableManiaHitObject,
+    /// this does not handle input/sound like a normal hit object.
+    /// </summary>
+    public class DrawableBarLine : DrawableManiaHitObject<BarLine>
+    {
+        /// <summary>
+        /// Height of major bar line triangles.
+        /// </summary>
+        private const float triangle_height = 12;
+
+        /// <summary>
+        /// Offset of the major bar line triangles from the sides of the bar line.
+        /// </summary>
+        private const float triangle_offset = 9;
+
+        public DrawableBarLine(BarLine barLine)
+            : base(barLine)
+        {
+            RelativeSizeAxes = Axes.X;
+            Height = 1;
+
+            Add(new Box
+            {
+                Name = "Bar line",
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+                RelativeSizeAxes = Axes.Both,
+            });
+
+            bool isMajor = barLine.BeatIndex % (int)barLine.ControlPoint.TimeSignature == 0;
+
+            if (isMajor)
+            {
+                Add(new EquilateralTriangle
+                {
+                    Name = "Left triangle",
+                    Anchor = Anchor.BottomLeft,
+                    Origin = Anchor.TopCentre,
+                    Size = new Vector2(triangle_height),
+                    X = -triangle_offset,
+                    Rotation = 90
+                });
+
+                Add(new EquilateralTriangle
+                {
+                    Name = "Right triangle",
+                    Anchor = Anchor.BottomRight,
+                    Origin = Anchor.TopCentre,
+                    Size = new Vector2(triangle_height),
+                    X = triangle_offset,
+                    Rotation = -90
+                });
+            }
+
+            if (!isMajor && barLine.BeatIndex % 2 == 1)
+                Alpha = 0.2f;
+        }
+
+        protected override void UpdateState(ArmedState state)
+        {
+        }
+    }
+}

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

@@ -5,17 +5,39 @@ using osu.Game.Rulesets.Objects.Drawables;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using OpenTK.Graphics;
+using osu.Framework.Configuration;
+using OpenTK.Input;
+using osu.Framework.Input;
+using OpenTK;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Mania.Judgements;
+using osu.Framework.Extensions.IEnumerableExtensions;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
+    /// <summary>
+    /// Visualises a <see cref="HoldNote"/> hit object.
+    /// </summary>
     public class DrawableHoldNote : DrawableManiaHitObject<HoldNote>
     {
-        private readonly NotePiece headPiece;
-        private readonly BodyPiece bodyPiece;
-        private readonly NotePiece tailPiece;
+        private readonly DrawableNote head;
+        private readonly DrawableNote tail;
 
-        public DrawableHoldNote(HoldNote hitObject)
-            : base(hitObject)
+        private readonly BodyPiece bodyPiece;
+        private readonly Container<DrawableHoldNoteTick> tickContainer;
+
+        /// <summary>
+        /// Time at which the user started holding this hold note. Null if the user is not holding this hold note.
+        /// </summary>
+        private double? holdStartTime;
+
+        /// <summary>
+        /// Whether the hold note has been released too early and shouldn't give full score for the release.
+        /// </summary>
+        private bool hasBroken;
+
+        public DrawableHoldNote(HoldNote hitObject, Bindable<Key> key = null)
+            : base(hitObject, key)
         {
             RelativeSizeAxes = Axes.Both;
             Height = (float)HitObject.Duration;
@@ -30,17 +52,37 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre,
                 },
-                headPiece = new NotePiece
+                tickContainer = new Container<DrawableHoldNoteTick>
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    RelativeChildOffset = new Vector2(0, (float)HitObject.StartTime),
+                    RelativeChildSize = new Vector2(1, (float)HitObject.Duration)
+                },
+                head = new DrawableHeadNote(this, key)
                 {
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre
                 },
-                tailPiece = new NotePiece
+                tail = new DrawableTailNote(this, key)
                 {
                     Anchor = Anchor.BottomCentre,
                     Origin = Anchor.TopCentre
                 }
             });
+
+            foreach (var tick in HitObject.Ticks)
+            {
+                var drawableTick = new DrawableHoldNoteTick(tick)
+                {
+                    HoldStartTime = () => holdStartTime
+                };
+
+                tickContainer.Add(drawableTick);
+                AddNested(drawableTick);
+            }
+
+            AddNested(head);
+            AddNested(tail);
         }
 
         public override Color4 AccentColour
@@ -52,9 +94,11 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                     return;
                 base.AccentColour = value;
 
-                headPiece.AccentColour = value;
+                tickContainer.Children.ForEach(t => t.AccentColour = value);
+
                 bodyPiece.AccentColour = value;
-                tailPiece.AccentColour = value;
+                head.AccentColour = value;
+                tail.AccentColour = value;
             }
         }
 
@@ -62,14 +106,132 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         {
         }
 
-        protected override void Update()
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
-            if (Time.Current > HitObject.StartTime)
-                headPiece.Colour = Color4.Green;
-            if (Time.Current > HitObject.EndTime)
+            // Make sure the keypress happened within the body of the hold note
+            if (Time.Current < HitObject.StartTime || Time.Current > HitObject.EndTime)
+                return false;
+
+            if (args.Key != Key)
+                return false;
+
+            if (args.Repeat)
+                return false;
+
+            // The user has pressed during the body of the hold note, after the head note and its hit windows have passed
+            // and within the limited range of the above if-statement. This state will be managed by the head note if the
+            // user has pressed during the hit windows of the head note.
+            holdStartTime = Time.Current;
+
+            return true;
+        }
+
+        protected override bool OnKeyUp(InputState state, KeyUpEventArgs args)
+        {
+            // Make sure that the user started holding the key during the hold note
+            if (!holdStartTime.HasValue)
+                return false;
+
+            if (args.Key != Key)
+                return false;
+
+            holdStartTime = null;
+
+            // If the key has been released too early, the user should not receive full score for the release
+            if (!tail.Judged)
+                hasBroken = true;
+
+            return true;
+        }
+
+        /// <summary>
+        /// The head note of a hold.
+        /// </summary>
+        private class DrawableHeadNote : DrawableNote
+        {
+            private readonly DrawableHoldNote holdNote;
+
+            public DrawableHeadNote(DrawableHoldNote holdNote, Bindable<Key> key = null)
+                : base(holdNote.HitObject.Head, key)
             {
-                bodyPiece.Colour = Color4.Green;
-                tailPiece.Colour = Color4.Green;
+                this.holdNote = holdNote;
+
+                RelativePositionAxes = Axes.None;
+                Y = 0;
+            }
+
+            protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+            {
+                if (!base.OnKeyDown(state, args))
+                    return false;
+
+                // We only want to trigger a holding state from the head if the head has received a judgement
+                if (!Judged)
+                    return false;
+
+                // If the key has been released too early, the user should not receive full score for the release
+                if (Judgement.Result == HitResult.Miss)
+                    holdNote.hasBroken = true;
+
+                // The head note also handles early hits before the body, but we want accurate early hits to count as the body being held
+                // The body doesn't handle these early early hits, so we have to explicitly set the holding state here
+                holdNote.holdStartTime = Time.Current;
+
+                return true;
+            }
+        }
+
+        /// <summary>
+        /// The tail note of a hold.
+        /// </summary>
+        private class DrawableTailNote : DrawableNote
+        {
+            private readonly DrawableHoldNote holdNote;
+
+            public DrawableTailNote(DrawableHoldNote holdNote, Bindable<Key> key = null)
+                : base(holdNote.HitObject.Tail, key)
+            {
+                this.holdNote = holdNote;
+
+                RelativePositionAxes = Axes.None;
+                Y = 0;
+            }
+
+            protected override ManiaJudgement CreateJudgement() => new HoldNoteTailJudgement();
+
+            protected override void CheckJudgement(bool userTriggered)
+            {
+                base.CheckJudgement(userTriggered);
+
+                var tailJudgement = Judgement as HoldNoteTailJudgement;
+                if (tailJudgement == null)
+                    return;
+
+                tailJudgement.HasBroken = holdNote.hasBroken;
+            }
+
+            protected override bool OnKeyUp(InputState state, KeyUpEventArgs args)
+            {
+                // Make sure that the user started holding the key during the hold note
+                if (!holdNote.holdStartTime.HasValue)
+                    return false;
+
+                if (Judgement.Result != HitResult.None)
+                    return false;
+
+                if (args.Key != Key)
+                    return false;
+
+                UpdateJudgement(true);
+
+                // Handled by the hold note, which will set holding = false
+                return false;
+            }
+
+            protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+            {
+                // Tail doesn't handle key down
+                return false;
             }
         }
     }

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

@@ -0,0 +1,121 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Mania.Judgements;
+using osu.Game.Rulesets.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Mania.Objects.Drawables
+{
+    /// <summary>
+    /// Visualises a <see cref="HoldNoteTick"/> hit object.
+    /// </summary>
+    public class DrawableHoldNoteTick : DrawableManiaHitObject<HoldNoteTick>
+    {
+        /// <summary>
+        /// References the time at which the user started holding the hold note.
+        /// </summary>
+        public Func<double?> HoldStartTime;
+
+        /// <summary>
+        /// References whether the user is currently holding the hold note.
+        /// </summary>
+        public Func<bool> IsHolding;
+
+        private readonly Container glowContainer;
+
+        public DrawableHoldNoteTick(HoldNoteTick hitObject)
+            : base(hitObject)
+        {
+            Anchor = Anchor.TopCentre;
+            Origin = Anchor.TopCentre;
+
+            RelativeSizeAxes = Axes.X;
+            Size = new Vector2(1);
+
+            Children = new[]
+            {
+                glowContainer = new CircularContainer
+                {
+                    Anchor = Anchor.TopCentre,
+                    Origin = Anchor.TopCentre,
+                    RelativeSizeAxes = Axes.Both,
+                    Masking = true,
+                    Children = new[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0,
+                            AlwaysPresent = true
+                        }
+                    }
+                }
+            };
+
+            // Set the default glow
+            AccentColour = Color4.White;
+        }
+
+        public override Color4 AccentColour
+        {
+            get { return base.AccentColour; }
+            set
+            {
+                base.AccentColour = value;
+
+                glowContainer.EdgeEffect = new EdgeEffectParameters
+                {
+                    Type = EdgeEffectType.Glow,
+                    Radius = 2f,
+                    Roundness = 15f,
+                    Colour = value.Opacity(0.3f)
+                };
+            }
+        }
+
+        protected override ManiaJudgement CreateJudgement() => new HoldNoteTickJudgement();
+
+        protected override void CheckJudgement(bool userTriggered)
+        {
+            if (!userTriggered)
+                return;
+
+            if (Time.Current < HitObject.StartTime)
+                return;
+
+            if (HoldStartTime?.Invoke() > HitObject.StartTime)
+                return;
+
+            Judgement.ManiaResult = ManiaHitResult.Perfect;
+            Judgement.Result = HitResult.Hit;
+        }
+
+        protected override void UpdateState(ArmedState state)
+        {
+            switch (State)
+            {
+                case ArmedState.Hit:
+                    AccentColour = Color4.Green;
+                    break;
+            }
+        }
+
+        protected override void Update()
+        {
+            if (Judgement.Result != HitResult.None)
+                return;
+
+            if (IsHolding?.Invoke() != true)
+                return;
+
+            UpdateJudgement(true);
+        }
+    }
+}

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

@@ -2,8 +2,11 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Judgements;
+using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
@@ -11,17 +14,32 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     public abstract class DrawableManiaHitObject<TObject> : DrawableHitObject<ManiaHitObject, ManiaJudgement>
         where TObject : ManiaHitObject
     {
+        /// <summary>
+        /// The key that will trigger input for this hit object.
+        /// </summary>
+        protected Bindable<Key> Key { get; private set; } = new Bindable<Key>();
+
         public new TObject HitObject;
 
-        protected DrawableManiaHitObject(TObject hitObject)
+        protected DrawableManiaHitObject(TObject hitObject, Bindable<Key> key = null)
             : base(hitObject)
         {
             HitObject = hitObject;
 
+            if (key != null)
+                Key.BindTo(key);
+
             RelativePositionAxes = Axes.Y;
             Y = (float)HitObject.StartTime;
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            LifetimeStart = HitObject.StartTime - ManiaPlayfield.TIME_SPAN_MAX;
+        }
+
         public override Color4 AccentColour
         {
             get { return base.AccentColour; }

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

@@ -1,19 +1,27 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
 using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
+using osu.Framework.Input;
+using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
+    /// <summary>
+    /// Visualises a <see cref="Note"/> hit object.
+    /// </summary>
     public class DrawableNote : DrawableManiaHitObject<Note>
     {
         private readonly NotePiece headPiece;
 
-        public DrawableNote(Note hitObject)
-            : base(hitObject)
+        public DrawableNote(Note hitObject, Bindable<Key> key = null)
+            : base(hitObject, key)
         {
             RelativeSizeAxes = Axes.Both;
             Height = 100;
@@ -38,14 +46,53 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             }
         }
 
-        protected override void Update()
+        protected override void CheckJudgement(bool userTriggered)
         {
-            if (Time.Current > HitObject.StartTime)
-                Colour = Color4.Green;
+            if (!userTriggered)
+            {
+                if (Judgement.TimeOffset > HitObject.HitWindows.Bad / 2)
+                    Judgement.Result = HitResult.Miss;
+                return;
+            }
+
+            double offset = Math.Abs(Judgement.TimeOffset);
+
+            if (offset > HitObject.HitWindows.Miss / 2)
+                return;
+
+            ManiaHitResult? tmpResult = HitObject.HitWindows.ResultFor(offset);
+
+            if (tmpResult.HasValue)
+            {
+                Judgement.Result = HitResult.Hit;
+                Judgement.ManiaResult = tmpResult.Value;
+            }
+            else
+                Judgement.Result = HitResult.Miss;
         }
 
         protected override void UpdateState(ArmedState state)
         {
+            switch (State)
+            {
+                case ArmedState.Hit:
+                    Colour = Color4.Green;
+                    break;
+            }
+        }
+
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            if (Judgement.Result != HitResult.None)
+                return false;
+
+            if (args.Key != Key)
+                return false;
+
+            if (args.Repeat)
+                return false;
+
+            return UpdateJudgement(true);
         }
     }
 }

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

@@ -1,9 +1,9 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Game.Beatmaps.Timing;
+using System.Collections.Generic;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Database;
-using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Mania.Objects
@@ -11,27 +11,99 @@ namespace osu.Game.Rulesets.Mania.Objects
     /// <summary>
     /// Represents a hit object which requires pressing, holding, and releasing a key.
     /// </summary>
-    public class HoldNote : Note, IHasEndTime
+    public class HoldNote : ManiaHitObject, IHasEndTime
     {
-        /// <summary>
-        /// Lenience of release hit windows. This is to make cases where the hold note release
-        /// is timed alongside presses of other hit objects less awkward.
-        /// </summary>
-        private const double release_window_lenience = 1.5;
-
-        public double Duration { get; set; }
         public double EndTime => StartTime + Duration;
 
-        /// <summary>
-        /// The key-release hit windows for this hold note.
-        /// </summary>
-        protected HitWindows ReleaseHitWindows = new HitWindows();
-
-        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        private double duration;
+        public double Duration
         {
-            base.ApplyDefaults(timing, difficulty);
+            get { return duration; }
+            set
+            {
+                duration = value;
+                Tail.StartTime = EndTime;
+            }
+        }
 
-            ReleaseHitWindows = HitWindows * release_window_lenience;
+        public override double StartTime
+        {
+            get { return base.StartTime; }
+            set
+            {
+                base.StartTime = value;
+                Head.StartTime = value;
+                Tail.StartTime = EndTime;
+            }
+        }
+
+        /// <summary>
+        /// The head note of the hold.
+        /// </summary>
+        public readonly Note Head = new Note();
+
+        /// <summary>
+        /// The tail note of the hold.
+        /// </summary>
+        public readonly Note Tail = new TailNote();
+
+        /// <summary>
+        /// The time between ticks of this hold.
+        /// </summary>
+        private double tickSpacing = 50;
+
+        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        {
+            base.ApplyDefaults(controlPointInfo, difficulty);
+
+            TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
+            tickSpacing = timingPoint.BeatLength / difficulty.SliderTickRate;
+
+            Head.ApplyDefaults(controlPointInfo, difficulty);
+            Tail.ApplyDefaults(controlPointInfo, difficulty);
+        }
+
+        /// <summary>
+        /// The scoring scoring ticks of the hold note.
+        /// </summary>
+        public IEnumerable<HoldNoteTick> Ticks => ticks ?? (ticks = createTicks());
+        private List<HoldNoteTick> ticks;
+
+        private List<HoldNoteTick> createTicks()
+        {
+            var ret = new List<HoldNoteTick>();
+
+            if (tickSpacing == 0)
+                return ret;
+
+            for (double t = StartTime + tickSpacing; t <= EndTime - tickSpacing; t += tickSpacing)
+            {
+                ret.Add(new HoldNoteTick
+                {
+                    StartTime = t
+                });
+            }
+
+            return ret;
+        }
+
+        /// <summary>
+        /// The tail of the hold note.
+        /// </summary>
+        private class TailNote : Note
+        {
+            /// <summary>
+            /// Lenience of release hit windows. This is to make cases where the hold note release
+            /// is timed alongside presses of other hit objects less awkward.
+            /// </summary>
+            private const double release_window_lenience = 1.5;
+
+            public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+            {
+                base.ApplyDefaults(controlPointInfo, difficulty);
+
+                HitWindows *= release_window_lenience;
+            }
         }
     }
 }

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

@@ -0,0 +1,12 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Mania.Objects
+{
+    /// <summary>
+    /// A scoring tick of a hold note.
+    /// </summary>
+    public class HoldNoteTick : ManiaHitObject
+    {
+    }
+}

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

@@ -9,11 +9,5 @@ namespace osu.Game.Rulesets.Mania.Objects
     public abstract class ManiaHitObject : HitObject, IHasColumn
     {
         public int Column { get; set; }
-
-        /// <summary>
-        /// The number of other <see cref="ManiaHitObject"/> that start at
-        /// the same time as this hit object.
-        /// </summary>
-        public int Siblings { get; set; }
     }
 }

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

@@ -1,7 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Game.Beatmaps.Timing;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Database;
 using osu.Game.Rulesets.Mania.Judgements;
 
@@ -15,11 +15,11 @@ namespace osu.Game.Rulesets.Mania.Objects
         /// <summary>
         /// The key-press hit window for this note.
         /// </summary>
-        protected HitWindows HitWindows = new HitWindows();
+        public HitWindows HitWindows { get; protected set; } = new HitWindows();
 
-        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(timing, difficulty);
+            base.ApplyDefaults(controlPointInfo, difficulty);
 
             HitWindows = new HitWindows(difficulty.OverallDifficulty);
         }

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

@@ -1,8 +1,13 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using System.Linq;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 
@@ -10,6 +15,143 @@ namespace osu.Game.Rulesets.Mania.Scoring
 {
     internal class ManiaScoreProcessor : ScoreProcessor<ManiaHitObject, ManiaJudgement>
     {
+        /// <summary>
+        /// The maximum score achievable.
+        /// Does _not_ include bonus score - for bonus score see <see cref="bonusScore"/>.
+        /// </summary>
+        private const int max_score = 1000000;
+
+        /// <summary>
+        /// The amount of the score attributed to combo.
+        /// </summary>
+        private const double combo_portion_max = max_score * 0.2;
+
+        /// <summary>
+        /// The amount of the score attributed to accuracy.
+        /// </summary>
+        private const double accuracy_portion_max = max_score * 0.8;
+
+        /// <summary>
+        /// The factor used to determine relevance of combos.
+        /// </summary>
+        private const double combo_base = 4;
+
+        /// <summary>
+        /// The combo value at which hit objects result in the max score possible.
+        /// </summary>
+        private const int combo_relevance_cap = 400;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_min = 0.75;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_mid = 0.85;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_max = 1;
+
+        /// <summary>
+        /// The default BAD hit HP increase.
+        /// </summary>
+        private const double hp_increase_bad = 0.005;
+
+        /// <summary>
+        /// The default OK hit HP increase.
+        /// </summary>
+        private const double hp_increase_ok = 0.010;
+
+        /// <summary>
+        /// The default GOOD hit HP increase.
+        /// </summary>
+        private const double hp_increase_good = 0.035;
+
+        /// <summary>
+        /// The default tick hit HP increase.
+        /// </summary>
+        private const double hp_increase_tick = 0.040;
+
+        /// <summary>
+        /// The default GREAT hit HP increase.
+        /// </summary>
+        private const double hp_increase_great = 0.055;
+
+        /// <summary>
+        /// The default PERFECT hit HP increase.
+        /// </summary>
+        private const double hp_increase_perfect = 0.065;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_miss_min = 0.5;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 5.
+        /// </summary>
+        private const double hp_multiplier_miss_mid = 0.75;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 10.
+        /// </summary>
+        private const double hp_multiplier_miss_max = 1;
+
+        /// <summary>
+        /// The default MISS HP increase.
+        /// </summary>
+        private const double hp_increase_miss = -0.125;
+
+        /// <summary>
+        /// The MISS HP multiplier. This is multiplied to the miss hp increase.
+        /// </summary>
+        private double hpMissMultiplier = 1;
+
+        /// <summary>
+        /// The HIT HP multiplier. This is multiplied to hit hp increases.
+        /// </summary>
+        private double hpMultiplier = 1;
+
+        /// <summary>
+        /// The cumulative combo portion of the score.
+        /// </summary>
+        private double comboScore => combo_portion_max * comboPortion / maxComboPortion;
+
+        /// <summary>
+        /// The cumulative accuracy portion of the score.
+        /// </summary>
+        private double accuracyScore => accuracy_portion_max * Math.Pow(Accuracy, 4) * totalHits / maxTotalHits;
+
+        /// <summary>
+        /// The cumulative bonus score.
+        /// This is added on top of <see cref="max_score"/>, thus the total score can exceed <see cref="max_score"/>.
+        /// </summary>
+        private double bonusScore;
+
+        /// <summary>
+        /// The <see cref="comboPortion"/> achieved by a perfect playthrough.
+        /// </summary>
+        private double maxComboPortion;
+
+        /// <summary>
+        /// The portion of the score dedicated to combo.
+        /// </summary>
+        private double comboPortion;
+
+        /// <summary>
+        /// The <see cref="totalHits"/> achieved by a perfect playthrough.
+        /// </summary>
+        private int maxTotalHits;
+
+        /// <summary>
+        /// The total hits.
+        /// </summary>
+        private int totalHits;
+
         public ManiaScoreProcessor()
         {
         }
@@ -19,8 +161,135 @@ namespace osu.Game.Rulesets.Mania.Scoring
         {
         }
 
+        protected override void ComputeTargets(Beatmap<ManiaHitObject> beatmap)
+        {
+            BeatmapDifficulty difficulty = beatmap.BeatmapInfo.Difficulty;
+            hpMultiplier = BeatmapDifficulty.DifficultyRange(difficulty.DrainRate, hp_multiplier_min, hp_multiplier_mid, hp_multiplier_max);
+            hpMissMultiplier = BeatmapDifficulty.DifficultyRange(difficulty.DrainRate, hp_multiplier_miss_min, hp_multiplier_miss_mid, hp_multiplier_miss_max);
+
+            while (true)
+            {
+                foreach (var obj in beatmap.HitObjects)
+                {
+                    var holdNote = obj as HoldNote;
+
+                    if (obj is Note)
+                    {
+                        AddJudgement(new ManiaJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaHitResult.Perfect
+                        });
+                    }
+                    else if (holdNote != null)
+                    {
+                        // Head
+                        AddJudgement(new ManiaJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaJudgement.MAX_HIT_RESULT
+                        });
+
+                        // Ticks
+                        int tickCount = holdNote.Ticks.Count();
+                        for (int i = 0; i < tickCount; i++)
+                        {
+                            AddJudgement(new HoldNoteTickJudgement
+                            {
+                                Result = HitResult.Hit,
+                                ManiaResult = ManiaJudgement.MAX_HIT_RESULT,
+                            });
+                        }
+
+                        AddJudgement(new HoldNoteTailJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaJudgement.MAX_HIT_RESULT
+                        });
+                    }
+                }
+
+                if (!HasFailed)
+                    break;
+
+                hpMultiplier *= 1.01;
+                hpMissMultiplier *= 0.98;
+
+                Reset();
+            }
+
+            maxTotalHits = totalHits;
+            maxComboPortion = comboPortion;
+        }
+
         protected override void OnNewJudgement(ManiaJudgement judgement)
         {
+            bool isTick = judgement is HoldNoteTickJudgement;
+
+            if (!isTick)
+                totalHits++;
+
+            switch (judgement.Result)
+            {
+                case HitResult.Miss:
+                    Health.Value += hpMissMultiplier * hp_increase_miss;
+                    break;
+                case HitResult.Hit:
+                    if (isTick)
+                    {
+                        Health.Value += hpMultiplier * hp_increase_tick;
+                        bonusScore += judgement.ResultValueForScore;
+                    }
+                    else
+                    {
+                        switch (judgement.ManiaResult)
+                        {
+                            case ManiaHitResult.Bad:
+                                Health.Value += hpMultiplier * hp_increase_bad;
+                                break;
+                            case ManiaHitResult.Ok:
+                                Health.Value += hpMultiplier * hp_increase_ok;
+                                break;
+                            case ManiaHitResult.Good:
+                                Health.Value += hpMultiplier * hp_increase_good;
+                                break;
+                            case ManiaHitResult.Great:
+                                Health.Value += hpMultiplier * hp_increase_great;
+                                break;
+                            case ManiaHitResult.Perfect:
+                                Health.Value += hpMultiplier * hp_increase_perfect;
+                                break;
+                        }
+
+                        // A factor that is applied to make higher combos more relevant
+                        double comboRelevance = Math.Min(Math.Max(0.5, Math.Log(Combo.Value, combo_base)), Math.Log(combo_relevance_cap, combo_base));
+                        comboPortion += judgement.ResultValueForScore * comboRelevance;
+                    }
+                    break;
+            }
+
+            int scoreForAccuracy = 0;
+            int maxScoreForAccuracy = 0;
+
+            foreach (var j in Judgements)
+            {
+                scoreForAccuracy += j.ResultValueForAccuracy;
+                maxScoreForAccuracy += j.MaxResultValueForAccuracy;
+            }
+
+            Accuracy.Value = (double)scoreForAccuracy / maxScoreForAccuracy;
+            TotalScore.Value = comboScore + accuracyScore + bonusScore;
+        }
+
+        protected override void Reset()
+        {
+            base.Reset();
+
+            Health.Value = 1;
+
+            bonusScore = 0;
+            comboPortion = 0;
+            totalHits = 0;
         }
     }
 }

osu.Game.Rulesets.Mania/Timing/BasicScrollingDrawableTimingSection.cs

@@ -0,0 +1,27 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Timing;
+
+namespace osu.Game.Rulesets.Mania.Timing
+{
+    /// <summary>
+    /// A <see cref="DrawableTimingSection"/> which scrolls relative to the control point start time.
+    /// </summary>
+    internal class BasicScrollingDrawableTimingSection : DrawableTimingSection
+    {
+        private readonly MultiplierControlPoint controlPoint;
+
+        public BasicScrollingDrawableTimingSection(MultiplierControlPoint controlPoint)
+        {
+            this.controlPoint = controlPoint;
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            Y = (float)(controlPoint.StartTime - Time.Current);
+        }
+    }
+}

osu.Game.Rulesets.Mania/Timing/ControlPointContainer.cs

@@ -1,153 +0,0 @@
-// Copyright (c) 2007-2017 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 osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using OpenTK;
-using osu.Game.Beatmaps.Timing;
-
-namespace osu.Game.Rulesets.Mania.Timing
-{
-    /// <summary>
-    /// A container in which added drawables are put into a relative coordinate space spanned by a length of time.
-    /// <para>
-    /// This container contains <see cref="ControlPoint"/>s which scroll inside this container.
-    /// Drawables added to this container are moved inside the relevant <see cref="ControlPoint"/>,
-    /// and as such, will scroll along with the <see cref="ControlPoint"/>s.
-    /// </para>
-    /// </summary>
-    public class ControlPointContainer : Container<Drawable>
-    {
-        /// <summary>
-        /// The amount of time which this container spans.
-        /// </summary>
-        public double TimeSpan { get; set; }
-
-        private readonly List<DrawableControlPoint> drawableControlPoints;
-
-        public ControlPointContainer(IEnumerable<ControlPoint> timingChanges)
-        {
-            drawableControlPoints = timingChanges.Select(t => new DrawableControlPoint(t)).ToList();
-            Children = drawableControlPoints;
-        }
-
-        /// <summary>
-        /// Adds a drawable to this container. Note that the drawable added must have its Y-position be
-        /// an absolute unit of time that is _not_ relative to <see cref="TimeSpan"/>.
-        /// </summary>
-        /// <param name="drawable">The drawable to add.</param>
-        public override void Add(Drawable drawable)
-        {
-            // Always add timing sections to ourselves
-            if (drawable is DrawableControlPoint)
-            {
-                base.Add(drawable);
-                return;
-            }
-
-            var controlPoint = drawableControlPoints.LastOrDefault(t => t.CanContain(drawable)) ?? drawableControlPoints.FirstOrDefault();
-
-            if (controlPoint == null)
-                throw new Exception("Could not find suitable timing section to add object to.");
-
-            controlPoint.Add(drawable);
-        }
-
-        /// <summary>
-        /// A container that contains drawables within the time span of a timing section.
-        /// <para>
-        /// The content of this container will scroll relative to the current time.
-        /// </para>
-        /// </summary>
-        private class DrawableControlPoint : Container
-        {
-            private readonly ControlPoint timingChange;
-
-            protected override Container<Drawable> Content => content;
-            private readonly Container content;
-
-            /// <summary>
-            /// Creates a drawable control point. The height of this container will be proportional
-            /// to the beat length of the control point it is initialized with such that, e.g. a beat length
-            /// of 500ms results in this container being twice as high as its parent, which further means that
-            /// the content container will scroll at twice the normal rate.
-            /// </summary>
-            /// <param name="timingChange">The control point to create the drawable control point for.</param>
-            public DrawableControlPoint(ControlPoint timingChange)
-            {
-                this.timingChange = timingChange;
-
-                RelativeSizeAxes = Axes.Both;
-
-                AddInternal(content = new AutoTimeRelativeContainer
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    RelativePositionAxes = Axes.Both,
-                    Y = (float)timingChange.Time
-                });
-            }
-
-            protected override void Update()
-            {
-                var parent = (ControlPointContainer)Parent;
-
-                // Adjust our height to account for the speed changes
-                Height = (float)(1000 / timingChange.BeatLength / timingChange.SpeedMultiplier);
-                RelativeCoordinateSpace = new Vector2(1, (float)parent.TimeSpan);
-
-                // Scroll the content
-                content.Y = (float)(timingChange.Time - Time.Current);
-            }
-
-            public override void Add(Drawable drawable)
-            {
-                // The previously relatively-positioned drawable will now become relative to content, but since the drawable has no knowledge of content,
-                // we need to offset it back by content's position position so that it becomes correctly relatively-positioned to content
-                // This can be removed if hit objects were stored such that either their StartTime or their "beat offset" was relative to the timing change
-                // they belonged to, but this requires a radical change to the beatmap format which we're not ready to do just yet
-                drawable.Y -= (float)timingChange.Time;
-
-                base.Add(drawable);
-            }
-
-            /// <summary>
-            /// Whether this control point can contain a drawable. This control point can contain a drawable if the drawable is positioned "after" this control point.
-            /// </summary>
-            /// <param name="drawable">The drawable to check.</param>
-            public bool CanContain(Drawable drawable) => content.Y <= drawable.Y;
-
-            /// <summary>
-            /// A container which always keeps its height and relative coordinate space "auto-sized" to its children.
-            /// <para>
-            /// This is used in the case where children are relatively positioned/sized to time values (e.g. notes/bar lines) to keep
-            /// such children wrapped inside a container, otherwise they would disappear due to container flattening.
-            /// </para>
-            /// </summary>
-            private class AutoTimeRelativeContainer : Container
-            {
-                public override void InvalidateFromChild(Invalidation invalidation)
-                {
-                    // We only want to re-compute our size when a child's size or position has changed
-                    if ((invalidation & Invalidation.Geometry) == 0)
-                    {
-                        base.InvalidateFromChild(invalidation);
-                        return;
-                    }
-
-                    if (!Children.Any())
-                        return;
-
-                    float height = Children.Select(child => child.Y + child.Height).Max();
-
-                    Height = height;
-                    RelativeCoordinateSpace = new Vector2(1, height);
-
-                    base.InvalidateFromChild(invalidation);
-                }
-            }
-        }
-    }
-}

osu.Game.Rulesets.Mania/Timing/GravityScrollingDrawableTimingSection.cs

@@ -0,0 +1,60 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Timing;
+
+namespace osu.Game.Rulesets.Mania.Timing
+{
+    /// <summary>
+    /// A <see cref="DrawableTimingSection"/> that emulates a form of gravity where hit objects speed up over time.
+    /// </summary>
+    internal class GravityScrollingDrawableTimingSection : DrawableTimingSection
+    {
+        private readonly MultiplierControlPoint controlPoint;
+
+        public GravityScrollingDrawableTimingSection(MultiplierControlPoint controlPoint)
+        {
+            this.controlPoint = controlPoint;
+        }
+
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            // The gravity-adjusted start position
+            float startPos = (float)computeGravityTime(controlPoint.StartTime);
+            // The gravity-adjusted end position
+            float endPos = (float)computeGravityTime(controlPoint.StartTime + RelativeChildSize.Y);
+
+            Y = startPos;
+            Height = endPos - startPos;
+        }
+
+        /// <summary>
+        /// Applies gravity to a time value based on the current time.
+        /// </summary>
+        /// <param name="time">The time value gravity should be applied to.</param>
+        /// <returns>The time after gravity is applied to <paramref name="time"/>.</returns>
+        private double computeGravityTime(double time)
+        {
+            double relativeTime = relativeTimeAt(time);
+
+            // The sign of the relative time, this is used to apply backwards acceleration leading into startTime
+            double sign = relativeTime < 0 ? -1 : 1;
+
+            return VisibleTimeRange - acceleration * relativeTime * relativeTime * sign;
+        }
+
+        /// <summary>
+        /// The acceleration due to "gravity" of the content of this container.
+        /// </summary>
+        private double acceleration => 1 / VisibleTimeRange;
+
+        /// <summary>
+        /// Computes the current time relative to <paramref name="time"/>, accounting for <see cref="DrawableTimingSection.VisibleTimeRange"/>.
+        /// </summary>
+        /// <param name="time">The non-offset time.</param>
+        /// <returns>The current time relative to <paramref name="time"/> - <see cref="DrawableTimingSection.VisibleTimeRange"/>. </returns>
+        private double relativeTimeAt(double time) => Time.Current - time + VisibleTimeRange;
+    }
+}

osu.Game.Rulesets.Mania/Timing/ManiaSpeedAdjustmentContainer.cs

@@ -0,0 +1,30 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Timing;
+
+namespace osu.Game.Rulesets.Mania.Timing
+{
+    public class ManiaSpeedAdjustmentContainer : SpeedAdjustmentContainer
+    {
+        private readonly ScrollingAlgorithm scrollingAlgorithm;
+
+        public ManiaSpeedAdjustmentContainer(MultiplierControlPoint timingSection, ScrollingAlgorithm scrollingAlgorithm)
+            : base(timingSection)
+        {
+            this.scrollingAlgorithm = scrollingAlgorithm;
+        }
+
+        protected override DrawableTimingSection CreateTimingSection()
+        {
+            switch (scrollingAlgorithm)
+            {
+                default:
+                case ScrollingAlgorithm.Basic:
+                    return new BasicScrollingDrawableTimingSection(ControlPoint);
+                case ScrollingAlgorithm.Gravity:
+                    return new GravityScrollingDrawableTimingSection(ControlPoint);
+            }
+        }
+    }
+}

osu.Game.Rulesets.Mania/Timing/ScrollingAlgorithm.cs

@@ -0,0 +1,17 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Mania.Timing
+{
+    public enum ScrollingAlgorithm
+    {
+        /// <summary>
+        /// Basic scrolling algorithm based on the timing section time. This is the default algorithm.
+        /// </summary>
+        Basic,
+        /// <summary>
+        /// Emulating a form of gravity where hit objects speed up over time.
+        /// </summary>
+        Gravity
+    }
+}

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

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 using OpenTK;
 using OpenTK.Graphics;
 using OpenTK.Input;
@@ -12,12 +11,10 @@ using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Input;
 using osu.Game.Graphics;
-using osu.Game.Rulesets.Mania.Timing;
-using System.Collections.Generic;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Mania.Objects;
-using osu.Game.Rulesets.Mania.Judgements;
-using osu.Game.Beatmaps.Timing;
+using System;
+using osu.Framework.Configuration;
+using osu.Game.Rulesets.Timing;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -33,15 +30,25 @@ namespace osu.Game.Rulesets.Mania.UI
         private const float column_width = 45;
         private const float special_column_width = 70;
 
-        public Key Key;
+        private readonly BindableDouble visibleTimeRange = new BindableDouble();
+        public BindableDouble VisibleTimeRange
+        {
+            get { return visibleTimeRange; }
+            set { visibleTimeRange.BindTo(value); }
+        }
+
+        /// <summary>
+        /// The key that will trigger input actions for this column and hit objects contained inside it.
+        /// </summary>
+        public Bindable<Key> Key = new Bindable<Key>();
 
         private readonly Box background;
         private readonly Container hitTargetBar;
         private readonly Container keyIcon;
 
-        public readonly ControlPointContainer ControlPointContainer;
+        private readonly SpeedAdjustmentCollection speedAdjustments;
 
-        public Column(IEnumerable<ControlPoint> timingChanges)
+        public Column()
         {
             RelativeSizeAxes = Axes.Y;
             Width = column_width;
@@ -58,7 +65,7 @@ namespace osu.Game.Rulesets.Mania.UI
                 {
                     Name = "Hit target + hit objects",
                     RelativeSizeAxes = Axes.Both,
-                    Padding = new MarginPadding { Top = ManiaPlayfield.HIT_TARGET_POSITION},
+                    Padding = new MarginPadding { Top = ManiaPlayfield.HIT_TARGET_POSITION },
                     Children = new Drawable[]
                     {
                         new Container
@@ -90,11 +97,18 @@ namespace osu.Game.Rulesets.Mania.UI
                                 }
                             }
                         },
-                        ControlPointContainer = new ControlPointContainer(timingChanges)
+                        speedAdjustments = new SpeedAdjustmentCollection(Axes.Y)
                         {
                             Name = "Hit objects",
                             RelativeSizeAxes = Axes.Both,
+                            VisibleTimeRange = VisibleTimeRange
                         },
+                        // For column lighting, we need to capture input events before the notes
+                        new InputTarget
+                        {
+                            KeyDown = onKeyDown,
+                            KeyUp = onKeyUp
+                        }
                     }
                 },
                 new Container
@@ -162,14 +176,14 @@ namespace osu.Game.Rulesets.Mania.UI
 
                 background.Colour = accentColour;
 
-                hitTargetBar.EdgeEffect = new EdgeEffect
+                hitTargetBar.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
                     Radius = 5,
                     Colour = accentColour.Opacity(0.5f),
                 };
 
-                keyIcon.EdgeEffect = new EdgeEffect
+                keyIcon.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
                     Radius = 5,
@@ -178,12 +192,14 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> hitObject)
+        public void Add(SpeedAdjustmentContainer speedAdjustment) => speedAdjustments.Add(speedAdjustment);
+        public void Add(DrawableHitObject hitObject)
         {
-            ControlPointContainer.Add(hitObject);
+            hitObject.AccentColour = AccentColour;
+            speedAdjustments.Add(hitObject);
         }
 
-        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        private bool onKeyDown(InputState state, KeyDownEventArgs args)
         {
             if (args.Repeat)
                 return false;
@@ -197,7 +213,7 @@ namespace osu.Game.Rulesets.Mania.UI
             return false;
         }
 
-        protected override bool OnKeyUp(InputState state, KeyUpEventArgs args)
+        private bool onKeyUp(InputState state, KeyUpEventArgs args)
         {
             if (args.Key == Key)
             {
@@ -207,5 +223,24 @@ namespace osu.Game.Rulesets.Mania.UI
 
             return false;
         }
+
+        /// <summary>
+        /// This is a simple container which delegates various input events that have to be captured before the notes.
+        /// </summary>
+        private class InputTarget : Container
+        {
+            public Func<InputState, KeyDownEventArgs, bool> KeyDown;
+            public Func<InputState, KeyUpEventArgs, bool> KeyUp;
+
+            public InputTarget()
+            {
+                RelativeSizeAxes = Axes.Both;
+                AlwaysPresent = true;
+                Alpha = 0;
+            }
+
+            protected override bool OnKeyDown(InputState state, KeyDownEventArgs args) => KeyDown?.Invoke(state, args) ?? false;
+            protected override bool OnKeyUp(InputState state, KeyUpEventArgs args) => KeyUp?.Invoke(state, args) ?? false;
+        }
     }
 }

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

@@ -2,87 +2,167 @@
 // 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 OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
+using osu.Framework.Lists;
+using osu.Framework.MathUtils;
 using osu.Game.Beatmaps;
-using osu.Game.Beatmaps.Timing;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Beatmaps;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Judgements;
+using osu.Game.Rulesets.Mania.Mods;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Scoring;
+using osu.Game.Rulesets.Mania.Timing;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.Timing;
 using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
-    public class ManiaHitRenderer : HitRenderer<ManiaHitObject, ManiaJudgement>
+    public class ManiaHitRenderer : SpeedAdjustedHitRenderer<ManiaHitObject, ManiaJudgement>
     {
-        public int? Columns;
+        /// <summary>
+        /// Preferred column count. This will only have an effect during the initialization of the play field.
+        /// </summary>
+        public int PreferredColumns;
+
+        public IEnumerable<DrawableBarLine> BarLines;
+
+        /// <summary>
+        /// Per-column timing changes.
+        /// </summary>
+        private readonly List<SpeedAdjustmentContainer>[] hitObjectSpeedAdjustments;
+
+        /// <summary>
+        /// Bar line timing changes.
+        /// </summary>
+        private readonly List<SpeedAdjustmentContainer> barLineSpeedAdjustments = new List<SpeedAdjustmentContainer>();
 
         public ManiaHitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
             : base(beatmap, isForCurrentRuleset)
         {
-        }
-
-        protected override Playfield<ManiaHitObject, ManiaJudgement> CreatePlayfield()
-        {
-            ControlPoint firstTimingChange = Beatmap.TimingInfo.ControlPoints.FirstOrDefault(t => t.TimingChange);
-
-            if (firstTimingChange == null)
-                throw new Exception("The Beatmap contains no timing points!");
-
-            // Generate the timing points, making non-timing changes use the previous timing change
-            var timingChanges = Beatmap.TimingInfo.ControlPoints.Select(c =>
-            {
-                ControlPoint t = c.Clone();
-
-                if (c.TimingChange)
-                    firstTimingChange = c;
-                else
-                    t.BeatLength = firstTimingChange.BeatLength;
-
-                return t;
-            });
+            // Generate the speed adjustment container lists
+            hitObjectSpeedAdjustments = new List<SpeedAdjustmentContainer>[PreferredColumns];
+            for (int i = 0; i < PreferredColumns; i++)
+                hitObjectSpeedAdjustments[i] = new List<SpeedAdjustmentContainer>();
 
+            // Generate the bar lines
             double lastObjectTime = (Objects.LastOrDefault() as IHasEndTime)?.EndTime ?? Objects.LastOrDefault()?.StartTime ?? double.MaxValue;
 
-            // Perform some post processing of the timing changes
-            timingChanges = timingChanges
-                // Collapse sections after the last hit object
-                .Where(s => s.Time <= lastObjectTime)
-                // Collapse sections with the same start time
-                .GroupBy(s => s.Time).Select(g => g.Last()).OrderBy(s => s.Time)
-                // Collapse sections with the same beat length
-                .GroupBy(s => s.BeatLength * s.SpeedMultiplier).Select(g => g.First())
-                .ToList();
+            SortedList<TimingControlPoint> timingPoints = Beatmap.ControlPointInfo.TimingPoints;
+            var barLines = new List<DrawableBarLine>();
 
-            return new ManiaPlayfield(Columns ?? (int)Math.Round(Beatmap.BeatmapInfo.Difficulty.CircleSize), timingChanges)
+            for (int i = 0; i < timingPoints.Count; i++)
             {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                // Invert by default for now (should be moved to config/skin later)
-                Scale = new Vector2(1, -1)
-            };
+                TimingControlPoint point = timingPoints[i];
+
+                // Stop on the beat before the next timing point, or if there is no next timing point stop slightly past the last object
+                double endTime = i < timingPoints.Count - 1 ? timingPoints[i + 1].Time - point.BeatLength : lastObjectTime + point.BeatLength * (int)point.TimeSignature;
+
+                int index = 0;
+                for (double t = timingPoints[i].Time; Precision.DefinitelyBigger(endTime, t); t += point.BeatLength, index++)
+                {
+                    barLines.Add(new DrawableBarLine(new BarLine
+                    {
+                        StartTime = t,
+                        ControlPoint = point,
+                        BeatIndex = index
+                    }));
+                }
+            }
+
+            BarLines = barLines;
+
+            // Generate speed adjustments from mods first
+            bool useDefaultSpeedAdjustments = true;
+
+            if (Mods != null)
+            {
+                foreach (var speedAdjustmentMod in Mods.OfType<IGenerateSpeedAdjustments>())
+                {
+                    useDefaultSpeedAdjustments = false;
+                    speedAdjustmentMod.ApplyToHitRenderer(this, ref hitObjectSpeedAdjustments, ref barLineSpeedAdjustments);
+                }
+            }
+
+            // Generate the default speed adjustments
+            if (useDefaultSpeedAdjustments)
+                generateDefaultSpeedAdjustments();
         }
 
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            var maniaPlayfield = (ManiaPlayfield)Playfield;
+
+            BarLines.ForEach(maniaPlayfield.Add);
+        }
+
+        protected override void ApplyBeatmap()
+        {
+            base.ApplyBeatmap();
+
+            PreferredColumns = (int)Math.Round(Beatmap.BeatmapInfo.Difficulty.CircleSize);
+        }
+
+        protected override void ApplySpeedAdjustments()
+        {
+            var maniaPlayfield = (ManiaPlayfield)Playfield;
+
+            for (int i = 0; i < PreferredColumns; i++)
+                foreach (var change in hitObjectSpeedAdjustments[i])
+                    maniaPlayfield.Columns.ElementAt(i).Add(change);
+
+            foreach (var change in barLineSpeedAdjustments)
+                maniaPlayfield.Add(change);
+        }
+
+        private void generateDefaultSpeedAdjustments()
+        {
+            DefaultControlPoints.ForEach(c =>
+            {
+                foreach (List<SpeedAdjustmentContainer> t in hitObjectSpeedAdjustments)
+                    t.Add(new ManiaSpeedAdjustmentContainer(c, ScrollingAlgorithm.Basic));
+                barLineSpeedAdjustments.Add(new ManiaSpeedAdjustmentContainer(c, ScrollingAlgorithm.Basic));
+            });
+        }
+
+        protected sealed override Playfield<ManiaHitObject, ManiaJudgement> CreatePlayfield() => new ManiaPlayfield(PreferredColumns)
+        {
+            Anchor = Anchor.Centre,
+            Origin = Anchor.Centre,
+            // Invert by default for now (should be moved to config/skin later)
+            Scale = new Vector2(1, -1)
+        };
+
         public override ScoreProcessor CreateScoreProcessor() => new ManiaScoreProcessor(this);
 
         protected override BeatmapConverter<ManiaHitObject> CreateBeatmapConverter() => new ManiaBeatmapConverter();
 
         protected override DrawableHitObject<ManiaHitObject, ManiaJudgement> GetVisualRepresentation(ManiaHitObject h)
         {
+            var maniaPlayfield = (ManiaPlayfield)Playfield;
+
+            Bindable<Key> key = maniaPlayfield.Columns.ElementAt(h.Column).Key;
+
             var holdNote = h as HoldNote;
             if (holdNote != null)
-                return new DrawableHoldNote(holdNote);
+                return new DrawableHoldNote(holdNote, key);
 
             var note = h as Note;
             if (note != null)
-                return new DrawableNote(note);
+                return new DrawableNote(note, key);
 
             return null;
         }

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

@@ -15,13 +15,13 @@ using osu.Framework.Allocation;
 using OpenTK.Input;
 using System.Linq;
 using System.Collections.Generic;
-using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Mania.Timing;
 using osu.Framework.Input;
-using osu.Game.Beatmaps.Timing;
 using osu.Framework.Graphics.Transforms;
 using osu.Framework.MathUtils;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Timing;
+using osu.Framework.Configuration;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -29,10 +29,10 @@ namespace osu.Game.Rulesets.Mania.UI
     {
         public const float HIT_TARGET_POSITION = 50;
 
-        private const float time_span_default = 5000;
-        private const float time_span_min = 10;
-        private const float time_span_max = 50000;
-        private const float time_span_step = 200;
+        private const double time_span_default = 1500;
+        public const double TIME_SPAN_MIN = 50;
+        public const double TIME_SPAN_MAX = 10000;
+        private const double time_span_step = 50;
 
         /// <summary>
         /// Default column keys, expanding outwards from the middle as more column are added.
@@ -55,16 +55,23 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public readonly FlowContainer<Column> Columns;
+        private readonly FlowContainer<Column> columns;
+        public IEnumerable<Column> Columns => columns.Children;
 
-        private readonly ControlPointContainer barlineContainer;
+        private readonly BindableDouble visibleTimeRange = new BindableDouble(time_span_default)
+        {
+            MinValue = TIME_SPAN_MIN,
+            MaxValue = TIME_SPAN_MAX
+        };
+
+        private readonly SpeedAdjustmentCollection barLineContainer;
 
         private List<Color4> normalColumnColours = new List<Color4>();
         private Color4 specialColumnColour;
 
         private readonly int columnCount;
 
-        public ManiaPlayfield(int columnCount, IEnumerable<ControlPoint> timingChanges)
+        public ManiaPlayfield(int columnCount)
         {
             this.columnCount = columnCount;
 
@@ -77,35 +84,52 @@ namespace osu.Game.Rulesets.Mania.UI
                 {
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre,
-                    RelativeSizeAxes = Axes.Y,
-                    AutoSizeAxes = Axes.X,
+                    RelativeSizeAxes = Axes.Both,
                     Masking = true,
                     Children = new Drawable[]
                     {
-                        new Box
+                        new Container
                         {
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black
-                        },
-                        Columns = new FillFlowContainer<Column>
-                        {
-                            Name = "Columns",
+                            Name = "Masked elements",
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
                             RelativeSizeAxes = Axes.Y,
                             AutoSizeAxes = Axes.X,
-                            Direction = FillDirection.Horizontal,
-                            Padding = new MarginPadding { Left = 1, Right = 1 },
-                            Spacing = new Vector2(1, 0)
+                            Masking = true,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Colour = Color4.Black
+                                },
+                                columns = new FillFlowContainer<Column>
+                                {
+                                    Name = "Columns",
+                                    RelativeSizeAxes = Axes.Y,
+                                    AutoSizeAxes = Axes.X,
+                                    Direction = FillDirection.Horizontal,
+                                    Padding = new MarginPadding { Left = 1, Right = 1 },
+                                    Spacing = new Vector2(1, 0)
+                                }
+                            }
                         },
                         new Container
                         {
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
                             RelativeSizeAxes = Axes.Both,
                             Padding = new MarginPadding { Top = HIT_TARGET_POSITION },
                             Children = new[]
                             {
-                                barlineContainer = new ControlPointContainer(timingChanges)
+                                barLineContainer = new SpeedAdjustmentCollection(Axes.Y)
                                 {
                                     Name = "Bar lines",
-                                    RelativeSizeAxes = Axes.Both,
+                                    Anchor = Anchor.TopCentre,
+                                    Origin = Anchor.TopCentre,
+                                    RelativeSizeAxes = Axes.Y,
+                                    VisibleTimeRange = visibleTimeRange
+                                    // Width is set in the Update method
                                 }
                             }
                         }
@@ -114,9 +138,7 @@ namespace osu.Game.Rulesets.Mania.UI
             };
 
             for (int i = 0; i < columnCount; i++)
-                Columns.Add(new Column(timingChanges));
-
-            TimeSpan = time_span_default;
+                columns.Add(new Column { VisibleTimeRange = visibleTimeRange });
         }
 
         [BackgroundDependencyLoader]
@@ -133,17 +155,17 @@ namespace osu.Game.Rulesets.Mania.UI
             // Set the special column + colour + key
             for (int i = 0; i < columnCount; i++)
             {
-                Column column = Columns.Children.ElementAt(i);
+                Column column = Columns.ElementAt(i);
                 column.IsSpecial = isSpecialColumn(i);
 
                 if (!column.IsSpecial)
                     continue;
 
-                column.Key = Key.Space;
+                column.Key.Value = Key.Space;
                 column.AccentColour = specialColumnColour;
             }
 
-            var nonSpecialColumns = Columns.Children.Where(c => !c.IsSpecial).ToList();
+            var nonSpecialColumns = Columns.Where(c => !c.IsSpecial).ToList();
 
             // We'll set the colours of the non-special columns in a separate loop, because the non-special
             // column colours are mirrored across their centre and special styles mess with this
@@ -162,11 +184,11 @@ namespace osu.Game.Rulesets.Mania.UI
 
                 int keyOffset = default_keys.Length / 2 - nonSpecialColumns.Count / 2 + i;
                 if (keyOffset >= 0 && keyOffset < default_keys.Length)
-                    column.Key = default_keys[keyOffset];
+                    column.Key.Value = default_keys[keyOffset];
                 else
                     // There is no default key defined for this column. Let's set this to Unknown for now
                     // however note that this will be gone after bindings are in place
-                    column.Key = Key.Unknown;
+                    column.Key.Value = Key.Unknown;
             }
         }
 
@@ -189,7 +211,9 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public override void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> h) => Columns.Children.ElementAt(h.HitObject.Column).Add(h);
+        public override void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> h) => Columns.ElementAt(h.HitObject.Column).Add(h);
+        public void Add(DrawableBarLine barline) => barLineContainer.Add(barline);
+        public void Add(SpeedAdjustmentContainer speedAdjustment) => barLineContainer.Add(speedAdjustment);
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
@@ -198,10 +222,10 @@ namespace osu.Game.Rulesets.Mania.UI
                 switch (args.Key)
                 {
                     case Key.Minus:
-                        transformTimeSpanTo(TimeSpan + time_span_step, 200, EasingTypes.OutQuint);
+                        transformVisibleTimeRangeTo(visibleTimeRange + time_span_step, 200, EasingTypes.OutQuint);
                         break;
                     case Key.Plus:
-                        transformTimeSpanTo(TimeSpan - time_span_step, 200, EasingTypes.OutQuint);
+                        transformVisibleTimeRangeTo(visibleTimeRange - time_span_step, 200, EasingTypes.OutQuint);
                         break;
                 }
             }
@@ -209,29 +233,16 @@ namespace osu.Game.Rulesets.Mania.UI
             return false;
         }
 
-        private double timeSpan;
-        /// <summary>
-        /// The amount of time which the length of the playfield spans.
-        /// </summary>
-        public double TimeSpan
+        private void transformVisibleTimeRangeTo(double newTimeRange, double duration = 0, EasingTypes easing = EasingTypes.None)
         {
-            get { return timeSpan; }
-            set
-            {
-                if (timeSpan == value)
-                    return;
-                timeSpan = value;
-
-                timeSpan = MathHelper.Clamp(timeSpan, time_span_min, time_span_max);
-
-                barlineContainer.TimeSpan = value;
-                Columns.Children.ForEach(c => c.ControlPointContainer.TimeSpan = value);
-            }
+            TransformTo(() => visibleTimeRange.Value, newTimeRange, duration, easing, new TransformTimeSpan());
         }
 
-        private void transformTimeSpanTo(double newTimeSpan, double duration = 0, EasingTypes easing = EasingTypes.None)
+        protected override void Update()
         {
-            TransformTo(() => TimeSpan, newTimeSpan, duration, easing, new TransformTimeSpan());
+            // Due to masking differences, it is not possible to get the width of the columns container automatically
+            // While masking on effectively only the Y-axis, so we need to set the width of the bar line container manually
+            barLineContainer.Width = columns.Width;
         }
 
         private class TransformTimeSpan : Transform<double>
@@ -253,7 +264,7 @@ namespace osu.Game.Rulesets.Mania.UI
                 base.Apply(d);
 
                 var p = (ManiaPlayfield)d;
-                p.TimeSpan = CurrentValue;
+                p.visibleTimeRange.Value = (float)CurrentValue;
             }
         }
     }

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

@@ -33,8 +33,9 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="OpenTK, Version=2.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.2.0.50727.1341\lib\net45\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.3.0\lib\net45\OpenTK.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -47,33 +48,48 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Beatmaps\Patterns\Legacy\EndTimeObjectPatternGenerator.cs" />
+    <Compile Include="Beatmaps\Patterns\Legacy\DistanceObjectPatternGenerator.cs" />
     <Compile Include="Beatmaps\Patterns\Legacy\PatternGenerator.cs" />
     <Compile Include="Beatmaps\Patterns\PatternGenerator.cs" />
+    <Compile Include="Beatmaps\Patterns\Legacy\HitObjectPatternGenerator.cs" />
     <Compile Include="Beatmaps\Patterns\Legacy\PatternType.cs" />
     <Compile Include="Beatmaps\ManiaBeatmapConverter.cs" />
     <Compile Include="Beatmaps\Patterns\Pattern.cs" />
     <Compile Include="MathUtils\FastRandom.cs" />
     <Compile Include="Judgements\HitWindows.cs" />
+    <Compile Include="Judgements\HoldNoteTailJudgement.cs" />
+    <Compile Include="Judgements\HoldNoteTickJudgement.cs" />
+    <Compile Include="Judgements\ManiaHitResult.cs" />
     <Compile Include="Judgements\ManiaJudgement.cs" />
     <Compile Include="ManiaDifficultyCalculator.cs" />
+    <Compile Include="Mods\IGenerateSpeedAdjustments.cs" />
+    <Compile Include="Objects\Drawables\DrawableBarLine.cs" />
     <Compile Include="Objects\Drawables\DrawableHoldNote.cs" />
+    <Compile Include="Objects\Drawables\DrawableHoldNoteTick.cs" />
     <Compile Include="Objects\Drawables\DrawableManiaHitObject.cs" />
     <Compile Include="Objects\Drawables\DrawableNote.cs" />
     <Compile Include="Objects\Drawables\Pieces\BodyPiece.cs" />
     <Compile Include="Objects\Drawables\Pieces\NotePiece.cs" />
     <Compile Include="Objects\Types\IHasColumn.cs" />
     <Compile Include="Scoring\ManiaScoreProcessor.cs" />
+    <Compile Include="Objects\BarLine.cs" />
     <Compile Include="Objects\HoldNote.cs" />
+    <Compile Include="Objects\HoldNoteTick.cs" />
     <Compile Include="Objects\ManiaHitObject.cs" />
     <Compile Include="Objects\Note.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Timing\BasicScrollingDrawableTimingSection.cs" />
+    <Compile Include="Timing\GravityScrollingDrawableTimingSection.cs" />
+    <Compile Include="Timing\ScrollingAlgorithm.cs" />
     <Compile Include="UI\Column.cs" />
     <Compile Include="UI\ManiaHitRenderer.cs" />
     <Compile Include="UI\ManiaPlayfield.cs" />
     <Compile Include="ManiaRuleset.cs" />
     <Compile Include="Mods\ManiaMod.cs" />
+    <Compile Include="Mods\ManiaModGravity.cs" />
     <Compile Include="UI\SpecialColumnPosition.cs" />
-    <Compile Include="Timing\ControlPointContainer.cs" />
+    <Compile Include="Timing\ManiaSpeedAdjustmentContainer.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\osu-framework\osu.Framework\osu.Framework.csproj">

osu.Game.Rulesets.Mania/packages.config

@@ -1,9 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-
 <!--
 Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 -->
 <packages>
-  <package id="ppy.OpenTK" version="2.0.50727.1341" targetFramework="net45" />
+  <package id="ppy.OpenTK" version="3.0" targetFramework="net45" />
 </packages>

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

@@ -39,6 +39,11 @@ namespace osu.Game.Rulesets.Osu.Mods
         public override Type[] IncompatibleMods => base.IncompatibleMods.Concat(new[] { typeof(OsuModAutopilot) }).ToArray();
     }
 
+    public class OsuModDaycore : ModDaycore
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
     public class OsuModDoubleTime : ModDoubleTime
     {
         public override double ScoreMultiplier => 1.12;

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

@@ -21,7 +21,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
             Masking = true;
             AutoSizeAxes = Axes.Both;
             CornerRadius = width / 2;
-            EdgeEffect = new EdgeEffect
+            EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Glow,
                 Colour = Color4.White.Opacity(0.2f),

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

@@ -30,6 +30,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
         private readonly TextAwesome symbol;
 
+        private readonly Color4 baseColour = OsuColour.FromHex(@"002c3c");
+        private readonly Color4 fillColour = OsuColour.FromHex(@"005b7c");
+
         private Color4 normalColour;
         private Color4 completeColour;
 
@@ -154,13 +157,13 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            normalColour = colours.SpinnerBase;
+            normalColour = baseColour;
 
             background.AccentColour = normalColour;
 
-            completeColour = colours.YellowLight.Opacity(0.6f);
+            completeColour = colours.YellowLight.Opacity(0.75f);
 
-            disc.AccentColour = colours.SpinnerFill;
+            disc.AccentColour = fillColour;
             circle.Colour = colours.BlueDark;
             glow.Colour = colours.BlueDark;
         }

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

@@ -31,7 +31,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                 {
                     Masking = true,
                     Origin = Anchor.Centre,
-                    EdgeEffect = new EdgeEffect
+                    EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Glow,
                         Radius = 60,

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

@@ -2,7 +2,6 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -26,11 +25,12 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             {
                 Disc.Colour = value;
 
-                EdgeEffect = new EdgeEffect
+                EdgeEffect = new EdgeEffectParameters
                 {
+                    Hollow = true,
                     Type = EdgeEffectType.Glow,
-                    Radius = 14,
-                    Colour = value.Opacity(0.3f),
+                    Radius = 40,
+                    Colour = value,
                 };
             }
         }

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

@@ -127,7 +127,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             if (Complete && updateCompleteTick())
             {
                 background.Flush(flushType: typeof(TransformAlpha));
-                background.FadeTo(tracking_alpha + 0.4f, 60, EasingTypes.OutExpo);
+                background.FadeTo(tracking_alpha + 0.2f, 60, EasingTypes.OutExpo);
                 background.Delay(60);
                 background.FadeTo(tracking_alpha, 250, EasingTypes.OutQuint);
             }

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

@@ -2,12 +2,10 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
-using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
-using osu.Game.Graphics;
 using OpenTK;
 using OpenTK.Graphics;
 
@@ -15,24 +13,12 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
 {
     public class SpinnerTicks : Container
     {
-        private Color4 glowColour;
-
         public SpinnerTicks()
         {
             Origin = Anchor.Centre;
             Anchor = Anchor.Centre;
             RelativeSizeAxes = Axes.Both;
-        }
 
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            glowColour = colours.BlueDarker.Opacity(0.4f);
-            layout();
-        }
-
-        private void layout()
-        {
             const int count = 18;
 
             for (int i = 0; i < count; i++)
@@ -41,11 +27,11 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                 {
                     Colour = Color4.Black,
                     Alpha = 0.4f,
-                    EdgeEffect = new EdgeEffect
+                    EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Glow,
-                        Radius = 20,
-                        Colour = glowColour,
+                        Radius = 10,
+                        Colour = Color4.Gray.Opacity(0.2f),
                     },
                     RelativePositionAxes = Axes.Both,
                     Masking = true,

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

@@ -6,8 +6,8 @@ using OpenTK;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using OpenTK.Graphics;
-using osu.Game.Beatmaps.Timing;
 using osu.Game.Database;
+using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
@@ -68,9 +68,9 @@ namespace osu.Game.Rulesets.Osu.Objects
             return OsuScoreResult.Miss;
         }
 
-        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(timing, difficulty);
+            base.ApplyDefaults(controlPointInfo, difficulty);
 
             Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
         }

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

@@ -1,201 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using OpenTK;
-using System;
-using System.Diagnostics;
-using System.Linq;
-
-namespace osu.Game.Rulesets.Osu.Objects
-{
-    internal class OsuHitObjectDifficulty
-    {
-        /// <summary>
-        /// Factor by how much speed / aim strain decays per second.
-        /// </summary>
-        /// <remarks>
-        /// These values are results of tweaking a lot and taking into account general feedback.
-        /// Opinionated observation: Speed is easier to maintain than accurate jumps.
-        /// </remarks>
-        internal static readonly double[] DECAY_BASE = { 0.3, 0.15 };
-
-        /// <summary>
-        /// Pseudo threshold values to distinguish between "singles" and "streams"
-        /// </summary>
-        /// <remarks>
-        ///  Of course the border can not be defined clearly, therefore the algorithm has a smooth transition between those values.
-        ///  They also are based on tweaking and general feedback.
-        /// </remarks>
-        private const double stream_spacing_threshold = 110,
-                             single_spacing_threshold = 125;
-
-        /// <summary>
-        /// Scaling values for weightings to keep aim and speed difficulty in balance.
-        /// </summary>
-        /// <remarks>
-        /// Found from testing a very large map pool (containing all ranked maps) and keeping the average values the same.
-        /// </remarks>
-        private static readonly double[] spacing_weight_scaling = { 1400, 26.25 };
-
-        /// <summary>
-        /// Almost the normed diameter of a circle (104 osu pixel). That is -after- position transforming.
-        /// </summary>
-        private const double almost_diameter = 90;
-
-        internal OsuHitObject BaseHitObject;
-        internal double[] Strains = { 1, 1 };
-
-        internal int MaxCombo = 1;
-
-        private readonly float scalingFactor;
-        private float lazySliderLength;
-
-        private readonly Vector2 startPosition;
-        private readonly Vector2 endPosition;
-
-        internal OsuHitObjectDifficulty(OsuHitObject baseHitObject)
-        {
-            BaseHitObject = baseHitObject;
-            float circleRadius = baseHitObject.Scale * 64;
-
-            Slider slider = BaseHitObject as Slider;
-            if (slider != null)
-                MaxCombo += slider.Ticks.Count();
-
-            // We will scale everything by this factor, so we can assume a uniform CircleSize among beatmaps.
-            scalingFactor = 52.0f / circleRadius;
-            if (circleRadius < 30)
-            {
-                float smallCircleBonus = Math.Min(30.0f - circleRadius, 5.0f) / 50.0f;
-                scalingFactor *= 1.0f + smallCircleBonus;
-            }
-
-            lazySliderLength = 0;
-            startPosition = baseHitObject.StackedPosition;
-
-            // Calculate approximation of lazy movement on the slider
-            if (slider != null)
-            {
-                float sliderFollowCircleRadius = circleRadius * 3; // Not sure if this is correct, but here we do not need 100% exact values. This comes pretty darn close in my tests.
-
-                // For simplifying this step we use actual osu! coordinates and simply scale the length, that we obtain by the ScalingFactor later
-                Vector2 cursorPos = startPosition;
-
-                Action<Vector2> addSliderVertex = delegate (Vector2 pos)
-                {
-                    Vector2 difference = pos - cursorPos;
-                    float distance = difference.Length;
-
-                    // Did we move away too far?
-                    if (distance > sliderFollowCircleRadius)
-                    {
-                        // Yep, we need to move the cursor
-                        difference.Normalize(); // Obtain the direction of difference. We do no longer need the actual difference
-                        distance -= sliderFollowCircleRadius;
-                        cursorPos += difference * distance; // We move the cursor just as far as needed to stay in the follow circle
-                        lazySliderLength += distance;
-                    }
-                };
-
-                // Actual computation of the first lazy curve
-                foreach (var tick in slider.Ticks)
-                    addSliderVertex(tick.StackedPosition);
-
-                addSliderVertex(baseHitObject.StackedEndPosition);
-
-                lazySliderLength *= scalingFactor;
-                endPosition = cursorPos;
-            }
-            // We have a normal HitCircle or a spinner
-            else
-                endPosition = startPosition;
-        }
-
-        internal void CalculateStrains(OsuHitObjectDifficulty previousHitObject, double timeRate)
-        {
-            calculateSpecificStrain(previousHitObject, OsuDifficultyCalculator.DifficultyType.Speed, timeRate);
-            calculateSpecificStrain(previousHitObject, OsuDifficultyCalculator.DifficultyType.Aim, timeRate);
-        }
-
-        // Caution: The subjective values are strong with this one
-        private static double spacingWeight(double distance, OsuDifficultyCalculator.DifficultyType type)
-        {
-            switch (type)
-            {
-                case OsuDifficultyCalculator.DifficultyType.Speed:
-                    if (distance > single_spacing_threshold)
-                        return 2.5;
-                    else if (distance > stream_spacing_threshold)
-                        return 1.6 + 0.9 * (distance - stream_spacing_threshold) / (single_spacing_threshold - stream_spacing_threshold);
-                    else if (distance > almost_diameter)
-                        return 1.2 + 0.4 * (distance - almost_diameter) / (stream_spacing_threshold - almost_diameter);
-                    else if (distance > almost_diameter / 2)
-                        return 0.95 + 0.25 * (distance - almost_diameter / 2) / (almost_diameter / 2);
-                    else
-                        return 0.95;
-
-                case OsuDifficultyCalculator.DifficultyType.Aim:
-                    return Math.Pow(distance, 0.99);
-            }
-
-            Debug.Assert(false, "Invalid osu difficulty hit object type.");
-            return 0;
-        }
-
-        private void calculateSpecificStrain(OsuHitObjectDifficulty previousHitObject, OsuDifficultyCalculator.DifficultyType type, double timeRate)
-        {
-            double addition = 0;
-            double timeElapsed = (BaseHitObject.StartTime - previousHitObject.BaseHitObject.StartTime) / timeRate;
-            double decay = Math.Pow(DECAY_BASE[(int)type], timeElapsed / 1000);
-
-            if (BaseHitObject is Spinner)
-            {
-                // Do nothing for spinners
-            }
-            else if (BaseHitObject is Slider)
-            {
-                switch (type)
-                {
-                    case OsuDifficultyCalculator.DifficultyType.Speed:
-
-                        // For speed strain we treat the whole slider as a single spacing entity, since "Speed" is about how hard it is to click buttons fast.
-                        // The spacing weight exists to differentiate between being able to easily alternate or having to single.
-                        addition =
-                            spacingWeight(previousHitObject.lazySliderLength +
-                                          DistanceTo(previousHitObject), type) *
-                            spacing_weight_scaling[(int)type];
-
-                        break;
-                    case OsuDifficultyCalculator.DifficultyType.Aim:
-
-                        // For Aim strain we treat each slider segment and the jump after the end of the slider as separate jumps, since movement-wise there is no difference
-                        // to multiple jumps.
-                        addition =
-                            (
-                                spacingWeight(previousHitObject.lazySliderLength, type) +
-                                spacingWeight(DistanceTo(previousHitObject), type)
-                            ) *
-                            spacing_weight_scaling[(int)type];
-
-                        break;
-                }
-            }
-            else if (BaseHitObject is HitCircle)
-            {
-                addition = spacingWeight(DistanceTo(previousHitObject), type) * spacing_weight_scaling[(int)type];
-            }
-
-            // Scale addition by the time, that elapsed. Filter out HitObjects that are too close to be played anyway to avoid crazy values by division through close to zero.
-            // You will never find maps that require this amongst ranked maps.
-            addition /= Math.Max(timeElapsed, 50);
-
-            Strains[(int)type] = previousHitObject.Strains[(int)type] * decay + addition;
-        }
-
-        internal double DistanceTo(OsuHitObjectDifficulty other)
-        {
-            // Scale the distance by circle size.
-            return (startPosition - other.endPosition).Length * scalingFactor;
-        }
-    }
-}

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

@@ -2,7 +2,6 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK;
-using osu.Game.Beatmaps.Timing;
 using osu.Game.Rulesets.Objects.Types;
 using System;
 using System.Collections.Generic;
@@ -10,6 +9,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Database;
 using System.Linq;
 using osu.Game.Audio;
+using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
@@ -62,13 +62,16 @@ namespace osu.Game.Rulesets.Osu.Objects
         public double Velocity;
         public double TickDistance;
 
-        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(timing, difficulty);
+            base.ApplyDefaults(controlPointInfo, difficulty);
 
-            double scoringDistance = base_scoring_distance * difficulty.SliderMultiplier / timing.SpeedMultiplierAt(StartTime);
+            TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
+            DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
 
-            Velocity = scoringDistance / timing.BeatLengthAt(StartTime);
+            double scoringDistance = base_scoring_distance * difficulty.SliderMultiplier / difficultyPoint.SpeedMultiplier;
+
+            Velocity = scoringDistance / timingPoint.BeatLength;
             TickDistance = scoringDistance / difficulty.SliderTickRate;
         }
 

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

@@ -2,8 +2,8 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Game.Rulesets.Objects.Types;
-using osu.Game.Beatmaps.Timing;
 using osu.Game.Database;
+using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
@@ -19,11 +19,14 @@ namespace osu.Game.Rulesets.Osu.Objects
 
         public override bool NewCombo => true;
 
-        public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(timing, difficulty);
+            base.ApplyDefaults(controlPointInfo, difficulty);
 
             SpinsRequired = (int)(Duration / 1000 * BeatmapDifficulty.DifficultyRange(difficulty.OverallDifficulty, 3, 5, 7.5));
+
+            // spinning doesn't match 1:1 with stable, so let's fudge them easier for the time being.
+            SpinsRequired = (int)(SpinsRequired * 0.6);
         }
     }
 }

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

@@ -0,0 +1,73 @@
+// Copyright (c) 2007-2017 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 osu.Game.Beatmaps;
+using osu.Game.Rulesets.Beatmaps;
+using osu.Game.Rulesets.Osu.Beatmaps;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing;
+using osu.Game.Rulesets.Osu.OsuDifficulty.Skills;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty
+{
+    public class OsuDifficultyCalculator : DifficultyCalculator<OsuHitObject>
+    {
+        private const int section_length = 400;
+        private const double difficulty_multiplier = 0.0675;
+
+        public OsuDifficultyCalculator(Beatmap beatmap) : base(beatmap)
+        {
+        }
+
+        protected override void PreprocessHitObjects()
+        {
+            foreach (OsuHitObject h in Objects)
+                (h as Slider)?.Curve?.Calculate();
+        }
+
+        protected override double CalculateInternal(Dictionary<string, string> categoryDifficulty)
+        {
+            OsuDifficultyBeatmap beatmap = new OsuDifficultyBeatmap(Objects);
+            Skill[] skills =
+            {
+                new Aim(),
+                new Speed()
+            };
+
+            double sectionEnd = section_length / TimeRate;
+            foreach (OsuDifficultyHitObject h in beatmap)
+            {
+                while (h.BaseObject.StartTime > sectionEnd)
+                {
+                    foreach (Skill s in skills)
+                    {
+                        s.SaveCurrentPeak();
+                        s.StartNewSectionFrom(sectionEnd);
+                    }
+
+                    sectionEnd += section_length;
+                }
+
+                foreach (Skill s in skills)
+                    s.Process(h);
+            }
+
+            double aimRating = Math.Sqrt(skills[0].DifficultyValue()) * difficulty_multiplier;
+            double speedRating = Math.Sqrt(skills[1].DifficultyValue()) * difficulty_multiplier;
+
+            double starRating = aimRating + speedRating + Math.Abs(aimRating - speedRating) / 2;
+
+            if (categoryDifficulty != null)
+            {
+                categoryDifficulty.Add("Aim", aimRating.ToString("0.00"));
+                categoryDifficulty.Add("Speed", speedRating.ToString("0.00"));
+            }
+
+            return starRating;
+        }
+
+        protected override BeatmapConverter<OsuHitObject> CreateBeatmapConverter() => new OsuBeatmapConverter();
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficulty/Preprocessing/OsuDifficultyBeatmap.cs

@@ -0,0 +1,93 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections;
+using System.Collections.Generic;
+using osu.Game.Rulesets.Osu.Objects;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing
+{
+    /// <summary>
+    /// An enumerable container wrapping <see cref="OsuHitObject"/> input as <see cref="OsuDifficultyHitObject"/>
+    /// which contains extra data required for difficulty calculation.
+    /// </summary>
+    public class OsuDifficultyBeatmap : IEnumerable<OsuDifficultyHitObject>
+    {
+        private readonly IEnumerator<OsuDifficultyHitObject> difficultyObjects;
+        private readonly Queue<OsuDifficultyHitObject> onScreen = new Queue<OsuDifficultyHitObject>();
+
+        /// <summary>
+        /// Creates an enumerator, which preprocesses a list of <see cref="OsuHitObject"/>s recieved as input, wrapping them as
+        /// <see cref="OsuDifficultyHitObject"/> which contains extra data required for difficulty calculation.
+        /// </summary>
+        public OsuDifficultyBeatmap(List<OsuHitObject> objects)
+        {
+            // Sort OsuHitObjects by StartTime - they are not correctly ordered in some cases.
+            // This should probably happen before the objects reach the difficulty calculator.
+            objects.Sort((a, b) => a.StartTime.CompareTo(b.StartTime));
+            difficultyObjects = createDifficultyObjectEnumerator(objects);
+        }
+
+        /// <summary>
+        /// Returns an enumerator that enumerates all <see cref="OsuDifficultyHitObject"/>s in the <see cref="OsuDifficultyBeatmap"/>.
+        /// The inner loop adds objects that appear on screen into a queue until we need to hit the next object.
+        /// The outer loop returns objects from this queue one at a time, only after they had to be hit, and should no longer be on screen.
+        /// This means that we can loop through every object that is on screen at the time when a new one appears,
+        /// allowing us to determine a reading strain for the object that just appeared.
+        /// </summary>
+        public IEnumerator<OsuDifficultyHitObject> GetEnumerator()
+        {
+            while (true)
+            {
+                // Add upcoming objects to the queue until we have at least one object that had been hit and can be dequeued.
+                // This means there is always at least one object in the queue unless we reached the end of the map.
+                do
+                {
+                    if (!difficultyObjects.MoveNext())
+                        break; // New objects can't be added anymore, but we still need to dequeue and return the ones already on screen.
+
+                    OsuDifficultyHitObject latest = difficultyObjects.Current;
+                    // Calculate flow values here
+
+                    foreach (OsuDifficultyHitObject h in onScreen)
+                    {
+                        h.TimeUntilHit -= latest.DeltaTime;
+                        // Calculate reading strain here
+                    }
+
+                    onScreen.Enqueue(latest);
+                }
+                while (onScreen.Peek().TimeUntilHit > 0); // Keep adding new objects on screen while there is still time before we have to hit the next one.
+
+                if (onScreen.Count == 0) break; // We have reached the end of the map and enumerated all the objects.
+                yield return onScreen.Dequeue(); // Remove and return objects one by one that had to be hit before the latest one appeared.
+            }
+        }
+
+        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+
+        private IEnumerator<OsuDifficultyHitObject> createDifficultyObjectEnumerator(List<OsuHitObject> objects)
+        {
+            // We will process OsuHitObjects in groups of three to form a triangle, so we can calculate an angle for each object.
+            OsuHitObject[] triangle = new OsuHitObject[3];
+
+            // OsuDifficultyHitObject construction requires three components, an extra copy of the first OsuHitObject is used at the beginning.
+            if (objects.Count > 1)
+            {
+                triangle[1] = objects[0]; // This copy will get shifted to the last spot in the triangle.
+                triangle[0] = objects[0]; // This component corresponds to the real first OsuHitOject.
+            }
+
+            // The final component of the first triangle will be the second OsuHitOject of the map, which forms the first jump.
+            // If the map has less than two OsuHitObjects, the enumerator will not return anything.
+            for (int i = 1; i < objects.Count; ++i)
+            {
+                triangle[2] = triangle[1];
+                triangle[1] = triangle[0];
+                triangle[0] = objects[i];
+
+                yield return new OsuDifficultyHitObject(triangle);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,70 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Game.Rulesets.Osu.Objects;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing
+{
+    /// <summary>
+    /// A wrapper around <see cref="OsuHitObject"/> extending it with additional data required for difficulty calculation.
+    /// </summary>
+    public class OsuDifficultyHitObject
+    {
+        /// <summary>
+        /// The <see cref="OsuHitObject"/> this <see cref="OsuDifficultyHitObject"/> refers to.
+        /// </summary>
+        public OsuHitObject BaseObject { get; }
+
+        /// <summary>
+        /// Normalized distance from the <see cref="OsuHitObject.StackedPosition"/> of the previous <see cref="OsuDifficultyHitObject"/>.
+        /// </summary>
+        public double Distance { get; private set; }
+
+        /// <summary>
+        /// Milliseconds elapsed since the StartTime of the previous <see cref="OsuDifficultyHitObject"/>.
+        /// </summary>
+        public double DeltaTime { get; private set; }
+
+        /// <summary>
+        /// Number of milliseconds until the <see cref="OsuDifficultyHitObject"/> has to be hit.
+        /// </summary>
+        public double TimeUntilHit { get; set; }
+
+        private const int normalized_radius = 52;
+
+        private readonly OsuHitObject[] t;
+
+        /// <summary>
+        /// Initializes the object calculating extra data required for difficulty calculation.
+        /// </summary>
+        public OsuDifficultyHitObject(OsuHitObject[] triangle)
+        {
+            t = triangle;
+            BaseObject = t[0];
+            setDistances();
+            setTimingValues();
+            // Calculate angle here
+        }
+
+        private void setDistances()
+        {
+            // We will scale distances by this factor, so we can assume a uniform CircleSize among beatmaps.
+            double scalingFactor = normalized_radius / BaseObject.Radius;
+            if (BaseObject.Radius < 30)
+            {
+                double smallCircleBonus = Math.Min(30 - BaseObject.Radius, 5) / 50;
+                scalingFactor *= 1 + smallCircleBonus;
+            }
+
+            Distance = (t[0].StackedPosition - t[1].StackedPosition).Length * scalingFactor;
+        }
+
+        private void setTimingValues()
+        {
+            // Every timing inverval is hard capped at the equivalent of 375 BPM streaming speed as a safety measure.
+            DeltaTime = Math.Max(40, t[0].StartTime - t[1].StartTime);
+            TimeUntilHit = 450; // BaseObject.PreEmpt;
+        }
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficulty/Skills/Aim.cs

@@ -0,0 +1,19 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Skills
+{
+    /// <summary>
+    /// Represents the skill required to correctly aim at every object in the map with a uniform CircleSize and normalized distances.
+    /// </summary>
+    public class Aim : Skill
+    {
+        protected override double SkillMultiplier => 26.25;
+        protected override double StrainDecayBase => 0.15;
+
+        protected override double StrainValueOf(OsuDifficultyHitObject current) => Math.Pow(current.Distance, 0.99) / current.DeltaTime;
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficulty/Skills/Skill.cs

@@ -0,0 +1,100 @@
+// Copyright (c) 2007-2017 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 osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing;
+using osu.Game.Rulesets.Osu.OsuDifficulty.Utils;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Skills
+{
+    /// <summary>
+    /// Used to processes strain values of <see cref="OsuDifficultyHitObject"/>s, keep track of strain levels caused by the processed objects
+    /// and to calculate a final difficulty value representing the difficulty of hitting all the processed objects.
+    /// </summary>
+    public abstract class Skill
+    {
+        /// <summary>
+        /// Strain values are multiplied by this number for the given skill. Used to balance the value of different skills between each other.
+        /// </summary>
+        protected abstract double SkillMultiplier { get; }
+
+        /// <summary>
+        /// Determines how quickly strain decays for the given skill.
+        /// For example a value of 0.15 indicates that strain decays to 15% of its original value in one second.
+        /// </summary>
+        protected abstract double StrainDecayBase { get; }
+
+        /// <summary>
+        /// <see cref="OsuDifficultyHitObject"/>s that were processed previously. They can affect the strain values of the following objects.
+        /// </summary>
+        protected readonly History<OsuDifficultyHitObject> Previous = new History<OsuDifficultyHitObject>(2); // Contained objects not used yet
+
+        private double currentStrain = 1; // We keep track of the strain level at all times throughout the beatmap.
+        private double currentSectionPeak = 1; // We also keep track of the peak strain level in the current section.
+        private readonly List<double> strainPeaks = new List<double>();
+
+        /// <summary>
+        /// Process an <see cref="OsuDifficultyHitObject"/> and update current strain values accordingly.
+        /// </summary>
+        public void Process(OsuDifficultyHitObject current)
+        {
+            currentStrain *= strainDecay(current.DeltaTime);
+            if (!(current.BaseObject is Spinner))
+                currentStrain += StrainValueOf(current) * SkillMultiplier;
+
+            currentSectionPeak = Math.Max(currentStrain, currentSectionPeak);
+
+            Previous.Push(current);
+        }
+
+        /// <summary>
+        /// Saves the current peak strain level to the list of strain peaks, which will be used to calculate an overall difficulty.
+        /// </summary>
+        public void SaveCurrentPeak()
+        {
+            if (Previous.Count > 0)
+                strainPeaks.Add(currentSectionPeak);
+        }
+
+        /// <summary>
+        /// Sets the initial strain level for a new section.
+        /// </summary>
+        /// <param name="offset">The beginning of the new section in milliseconds</param>
+        public void StartNewSectionFrom(double offset)
+        {
+            // The maximum strain of the new section is not zero by default, strain decays as usual regardless of section boundaries.
+            // This means we need to capture the strain level at the beginning of the new section, and use that as the initial peak level.
+            if (Previous.Count > 0)
+                currentSectionPeak = currentStrain * strainDecay(offset - Previous[0].BaseObject.StartTime);
+        }
+
+        /// <summary>
+        /// Returns the calculated difficulty value representing all processed <see cref="OsuDifficultyHitObject"/>s.
+        /// </summary>
+        public double DifficultyValue()
+        {
+            strainPeaks.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
+
+            double difficulty = 0;
+            double weight = 1;
+
+            // Difficulty is the weighted sum of the highest strains from every section.
+            foreach (double strain in strainPeaks)
+            {
+                difficulty += strain * weight;
+                weight *= 0.9;
+            }
+
+            return difficulty;
+        }
+
+        /// <summary>
+        /// Calculates the strain value of an <see cref="OsuDifficultyHitObject"/>. This value is affected by previously processed objects.
+        /// </summary>
+        protected abstract double StrainValueOf(OsuDifficultyHitObject current);
+
+        private double strainDecay(double ms) => Math.Pow(StrainDecayBase, ms / 1000);
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficulty/Skills/Speed.cs

@@ -0,0 +1,39 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Skills
+{
+    /// <summary>
+    /// Represents the skill required to press keys with regards to keeping up with the speed at which objects need to be hit.
+    /// </summary>
+    public class Speed : Skill
+    {
+        protected override double SkillMultiplier => 1400;
+        protected override double StrainDecayBase => 0.3;
+
+        private const double single_spacing_threshold = 125;
+        private const double stream_spacing_threshold = 110;
+        private const double almost_diameter = 90;
+
+        protected override double StrainValueOf(OsuDifficultyHitObject current)
+        {
+            double distance = current.Distance;
+
+            double speedValue;
+            if (distance > single_spacing_threshold)
+                speedValue = 2.5;
+            else if (distance > stream_spacing_threshold)
+                speedValue = 1.6 + 0.9 * (distance - stream_spacing_threshold) / (single_spacing_threshold - stream_spacing_threshold);
+            else if (distance > almost_diameter)
+                speedValue = 1.2 + 0.4 * (distance - almost_diameter) / (stream_spacing_threshold - almost_diameter);
+            else if (distance > almost_diameter / 2)
+                speedValue = 0.95 + 0.25 * (distance - almost_diameter / 2) / (almost_diameter / 2);
+            else
+                speedValue = 0.95;
+
+            return speedValue / current.DeltaTime;
+        }
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficulty/Utils/History.cs

@@ -0,0 +1,86 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace osu.Game.Rulesets.Osu.OsuDifficulty.Utils
+{
+    /// <summary>
+    /// An indexed stack with Push() only, which disposes items at the bottom after the capacity is full.
+    /// Indexing starts at the top of the stack.
+    /// </summary>
+    public class History<T> : IEnumerable<T>
+    {
+        public int Count { get; private set; }
+
+        private readonly T[] array;
+        private readonly int capacity;
+        private int marker; // Marks the position of the most recently added item.
+
+        /// <summary>
+        /// Initializes a new instance of the History class that is empty and has the specified capacity.
+        /// </summary>
+        /// <param name="capacity">The number of items the History can hold.</param>
+        public History(int capacity)
+        {
+            if (capacity < 0)
+                throw new ArgumentOutOfRangeException();
+
+            this.capacity = capacity;
+            array = new T[capacity];
+            marker = capacity; // Set marker to the end of the array, outside of the indexed range by one.
+        }
+
+        /// <summary>
+        /// The most recently added item is returned at index 0.
+        /// </summary>
+        public T this[int i]
+        {
+            get
+            {
+                if (i < 0 || i > Count - 1)
+                    throw new IndexOutOfRangeException();
+
+                i += marker;
+                if (i > capacity - 1)
+                    i -= capacity;
+
+                return array[i];
+            }
+        }
+
+        /// <summary>
+        /// Adds the item as the most recent one in the history.
+        /// The oldest item is disposed if the history is full.
+        /// </summary>
+        public void Push(T item) // Overwrite the oldest item instead of shifting every item by one with every addition.
+        {
+            if (marker == 0)
+                marker = capacity - 1;
+            else
+                --marker;
+
+            array[marker] = item;
+
+            if (Count < capacity)
+                ++Count;
+        }
+
+        /// <summary>
+        /// Returns an enumerator which enumerates items in the history starting from the most recently added one.
+        /// </summary>
+        public IEnumerator<T> GetEnumerator()
+        {
+            for (int i = marker; i < capacity; ++i)
+                yield return array[i];
+
+            if (Count == capacity)
+                for (int i = 0; i < marker; ++i)
+                    yield return array[i];
+        }
+
+        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+    }
+}

osu.Game.Rulesets.Osu/OsuDifficultyCalculator.cs

@@ -1,192 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using osu.Game.Beatmaps;
-using osu.Game.Rulesets.Beatmaps;
-using osu.Game.Rulesets.Osu.Beatmaps;
-using osu.Game.Rulesets.Osu.Objects;
-using System;
-using System.Collections.Generic;
-
-namespace osu.Game.Rulesets.Osu
-{
-    public class OsuDifficultyCalculator : DifficultyCalculator<OsuHitObject>
-    {
-        private const double star_scaling_factor = 0.0675;
-        private const double extreme_scaling_factor = 0.5;
-
-        /// <summary>
-        /// HitObjects are stored as a member variable.
-        /// </summary>
-        internal List<OsuHitObjectDifficulty> DifficultyHitObjects = new List<OsuHitObjectDifficulty>();
-
-        public OsuDifficultyCalculator(Beatmap beatmap) : base(beatmap)
-        {
-        }
-
-        protected override void PreprocessHitObjects()
-        {
-            foreach (var h in Objects)
-                (h as Slider)?.Curve?.Calculate();
-        }
-
-        protected override double CalculateInternal(Dictionary<string, string> categoryDifficulty)
-        {
-            // Fill our custom DifficultyHitObject class, that carries additional information
-            DifficultyHitObjects.Clear();
-
-            foreach (var hitObject in Objects)
-                DifficultyHitObjects.Add(new OsuHitObjectDifficulty(hitObject));
-
-            // Sort DifficultyHitObjects by StartTime of the HitObjects - just to make sure.
-            DifficultyHitObjects.Sort((a, b) => a.BaseHitObject.StartTime.CompareTo(b.BaseHitObject.StartTime));
-
-            if (!CalculateStrainValues()) return 0;
-
-            double speedDifficulty = CalculateDifficulty(DifficultyType.Speed);
-            double aimDifficulty = CalculateDifficulty(DifficultyType.Aim);
-
-            // OverallDifficulty is not considered in this algorithm and neither is HpDrainRate. That means, that in this form the algorithm determines how hard it physically is
-            // to play the map, assuming, that too much of an error will not lead to a death.
-            // It might be desirable to include OverallDifficulty into map difficulty, but in my personal opinion it belongs more to the weighting of the actual peformance
-            // and is superfluous in the beatmap difficulty rating.
-            // If it were to be considered, then I would look at the hit window of normal HitCircles only, since Sliders and Spinners are (almost) "free" 300s and take map length
-            // into account as well.
-
-            // The difficulty can be scaled by any desired metric.
-            // In osu!tp it gets squared to account for the rapid increase in difficulty as the limit of a human is approached. (Of course it also gets scaled afterwards.)
-            // It would not be suitable for a star rating, therefore:
-
-            // The following is a proposal to forge a star rating from 0 to 5. It consists of taking the square root of the difficulty, since by simply scaling the easier
-            // 5-star maps would end up with one star.
-            double speedStars = Math.Sqrt(speedDifficulty) * star_scaling_factor;
-            double aimStars = Math.Sqrt(aimDifficulty) * star_scaling_factor;
-
-            if (categoryDifficulty != null)
-            {
-                categoryDifficulty.Add("Aim", aimStars.ToString("0.00"));
-                categoryDifficulty.Add("Speed", speedStars.ToString("0.00"));
-
-                double hitWindow300 = 30/*HitObjectManager.HitWindow300*/ / TimeRate;
-                double preEmpt = 450/*HitObjectManager.PreEmpt*/ / TimeRate;
-
-                categoryDifficulty.Add("OD", (-(hitWindow300 - 80.0) / 6.0).ToString("0.00"));
-                categoryDifficulty.Add("AR", (preEmpt > 1200.0 ? -(preEmpt - 1800.0) / 120.0 : -(preEmpt - 1200.0) / 150.0 + 5.0).ToString("0.00"));
-
-                int maxCombo = 0;
-                foreach (OsuHitObjectDifficulty hitObject in DifficultyHitObjects)
-                    maxCombo += hitObject.MaxCombo;
-
-                categoryDifficulty.Add("Max combo", maxCombo.ToString());
-            }
-
-            // Again, from own observations and from the general opinion of the community a map with high speed and low aim (or vice versa) difficulty is harder,
-            // than a map with mediocre difficulty in both. Therefore we can not just add both difficulties together, but will introduce a scaling that favors extremes.
-            double starRating = speedStars + aimStars + Math.Abs(speedStars - aimStars) * extreme_scaling_factor;
-            // Another approach to this would be taking Speed and Aim separately to a chosen power, which again would be equivalent. This would be more convenient if
-            // the hit window size is to be considered as well.
-
-            // Note: The star rating is tuned extremely tight! Airman (/b/104229) and Freedom Dive (/b/126645), two of the hardest ranked maps, both score ~4.66 stars.
-            // Expect the easier kind of maps that officially get 5 stars to obtain around 2 by this metric. The tutorial still scores about half a star.
-            // Tune by yourself as you please. ;)
-
-            return starRating;
-        }
-
-        protected bool CalculateStrainValues()
-        {
-            // Traverse hitObjects in pairs to calculate the strain value of NextHitObject from the strain value of CurrentHitObject and environment.
-            using (List<OsuHitObjectDifficulty>.Enumerator hitObjectsEnumerator = DifficultyHitObjects.GetEnumerator())
-            {
-
-                if (!hitObjectsEnumerator.MoveNext()) return false;
-
-                OsuHitObjectDifficulty current = hitObjectsEnumerator.Current;
-
-                // First hitObject starts at strain 1. 1 is the default for strain values, so we don't need to set it here. See DifficultyHitObject.
-                while (hitObjectsEnumerator.MoveNext())
-                {
-                    var next = hitObjectsEnumerator.Current;
-                    next?.CalculateStrains(current, TimeRate);
-                    current = next;
-                }
-
-                return true;
-            }
-        }
-
-        /// <summary>
-        /// In milliseconds. For difficulty calculation we will only look at the highest strain value in each time interval of size STRAIN_STEP.
-        /// This is to eliminate higher influence of stream over aim by simply having more HitObjects with high strain.
-        /// The higher this value, the less strains there will be, indirectly giving long beatmaps an advantage.
-        /// </summary>
-        protected const double STRAIN_STEP = 400;
-
-        /// <summary>
-        /// The weighting of each strain value decays to this number * it's previous value
-        /// </summary>
-        protected const double DECAY_WEIGHT = 0.9;
-
-        protected double CalculateDifficulty(DifficultyType type)
-        {
-            double actualStrainStep = STRAIN_STEP * TimeRate;
-
-            // Find the highest strain value within each strain step
-            List<double> highestStrains = new List<double>();
-            double intervalEndTime = actualStrainStep;
-            double maximumStrain = 0; // We need to keep track of the maximum strain in the current interval
-
-            OsuHitObjectDifficulty previousHitObject = null;
-            foreach (OsuHitObjectDifficulty hitObject in DifficultyHitObjects)
-            {
-                // While we are beyond the current interval push the currently available maximum to our strain list
-                while (hitObject.BaseHitObject.StartTime > intervalEndTime)
-                {
-                    highestStrains.Add(maximumStrain);
-
-                    // The maximum strain of the next interval is not zero by default! We need to take the last hitObject we encountered, take its strain and apply the decay
-                    // until the beginning of the next interval.
-                    if (previousHitObject == null)
-                    {
-                        maximumStrain = 0;
-                    }
-                    else
-                    {
-                        double decay = Math.Pow(OsuHitObjectDifficulty.DECAY_BASE[(int)type], (intervalEndTime - previousHitObject.BaseHitObject.StartTime) / 1000);
-                        maximumStrain = previousHitObject.Strains[(int)type] * decay;
-                    }
-
-                    // Go to the next time interval
-                    intervalEndTime += actualStrainStep;
-                }
-
-                // Obtain maximum strain
-                maximumStrain = Math.Max(hitObject.Strains[(int)type], maximumStrain);
-
-                previousHitObject = hitObject;
-            }
-
-            // Build the weighted sum over the highest strains for each interval
-            double difficulty = 0;
-            double weight = 1;
-            highestStrains.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
-
-            foreach (double strain in highestStrains)
-            {
-                difficulty += weight * strain;
-                weight *= DECAY_WEIGHT;
-            }
-
-            return difficulty;
-        }
-
-        protected override BeatmapConverter<OsuHitObject> CreateBeatmapConverter() => new OsuBeatmapConverter();
-
-        // Those values are used as array indices. Be careful when changing them!
-        public enum DifficultyType
-        {
-            Speed = 0,
-            Aim,
-        };
-    }
-}

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -7,6 +7,7 @@ using osu.Game.Graphics;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.OsuDifficulty;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
@@ -46,7 +47,14 @@ namespace osu.Game.Rulesets.Osu
                     {
                         new OsuModEasy(),
                         new OsuModNoFail(),
-                        new OsuModHalfTime(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new OsuModHalfTime(),
+                                new OsuModDaycore(),
+                            },
+                        },
                     };
 
                 case ModType.DifficultyIncrease:

osu.Game.Rulesets.Osu/osu.Game.Rulesets.Osu.csproj

@@ -34,8 +34,9 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="OpenTK, Version=2.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.2.0.50727.1341\lib\net45\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\ppy.OpenTK.3.0\lib\net45\OpenTK.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -68,9 +69,14 @@
     <Compile Include="Objects\Drawables\Pieces\TrianglesPiece.cs" />
     <Compile Include="Objects\Drawables\Pieces\SliderBall.cs" />
     <Compile Include="Objects\Drawables\Pieces\SliderBody.cs" />
-    <Compile Include="Objects\OsuHitObjectDifficulty.cs" />
     <Compile Include="Objects\SliderTick.cs" />
-    <Compile Include="OsuDifficultyCalculator.cs" />
+    <Compile Include="OsuDifficulty\OsuDifficultyCalculator.cs" />
+    <Compile Include="OsuDifficulty\Preprocessing\OsuDifficultyBeatmap.cs" />
+    <Compile Include="OsuDifficulty\Preprocessing\OsuDifficultyHitObject.cs" />
+    <Compile Include="OsuDifficulty\Skills\Aim.cs" />
+    <Compile Include="OsuDifficulty\Skills\Skill.cs" />
+    <Compile Include="OsuDifficulty\Skills\Speed.cs" />
+    <Compile Include="OsuDifficulty\Utils\History.cs" />
     <Compile Include="OsuKeyConversionInputManager.cs" />
     <Compile Include="Scoring\OsuScoreProcessor.cs" />
     <Compile Include="UI\OsuHitRenderer.cs" />

osu.Game.Rulesets.Osu/packages.config

@@ -5,5 +5,5 @@ Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 -->
 <packages>
-  <package id="ppy.OpenTK" version="2.0.50727.1341" targetFramework="net45" />
+  <package id="ppy.OpenTK" version="3.0" targetFramework="net45" />
 </packages>

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

@@ -12,6 +12,7 @@ using osu.Game.Database;
 using osu.Game.IO.Serialization;
 using osu.Game.Audio;
 using osu.Game.Rulesets.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Game.Rulesets.Taiko.Beatmaps
 {
@@ -77,8 +78,11 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
             {
                 int repeats = repeatsData?.RepeatCount ?? 1;
 
-                double speedAdjustment = beatmap.TimingInfo.SpeedMultiplierAt(obj.StartTime);
-                double speedAdjustedBeatLength = beatmap.TimingInfo.BeatLengthAt(obj.StartTime) * speedAdjustment;
+                TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(obj.StartTime);
+                DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(obj.StartTime);
+
+                double speedAdjustment = difficultyPoint.SpeedMultiplier;
+                double speedAdjustedBeatLength = timingPoint.BeatLength * speedAdjustment;
 
                 // The true distance, accounting for any repeats. This ends up being the drum roll distance later
                 double distance = distanceData.Distance * repeats * legacy_velocity_multiplier;

osu.Game.Rulesets.Taiko/Mods/TaikoMod.cs

@@ -37,6 +37,11 @@ namespace osu.Game.Rulesets.Taiko.Mods
 
     }
 
+    public class TaikoModDaycore : ModDaycore
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
     public class TaikoModDoubleTime : ModDoubleTime
     {
         public override double ScoreMultiplier => 1.12;

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

@@ -68,7 +68,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                             Size = new Vector2(TaikoHitObject.DEFAULT_CIRCLE_DIAMETER),
                             BlendingMode = BlendingMode.Additive,
                             Masking = true,
-                            Children = new []
+                            Children = new[]
                             {
                                 new Box
                                 {
@@ -119,7 +119,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
-                            Children = new []
+                            Children = new[]
                             {
                                 symbol = new SwellSymbolPiece()
                             }