Merge branch 'master' into most-played-beatmaps-section

osu-framework

@@ -1 +1 @@
-Subproject commit 4fc866eee3803f88b155150e32e021b9c21e647f
+Subproject commit 00740e0185b9d828b67d6228d8e5d5bf0d49af94

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -22,7 +22,6 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -102,9 +101,6 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="App.config">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>

osu.Desktop/osu.Desktop.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="12.0">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <ProjectGuid>{419659FD-72EA-4678-9EB8-B22A746CED70}</ProjectGuid>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -62,7 +63,6 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <Commandlineparameters>
     </Commandlineparameters>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>none</DebugType>
@@ -98,7 +98,6 @@
     <DebugType>full</DebugType>
     <PlatformTarget>AnyCPU</PlatformTarget>
     <UseVSHostingProcess>false</UseVSHostingProcess>
-    <LangVersion>6</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <StartArguments>--tests</StartArguments>
   </PropertyGroup>
@@ -174,9 +173,6 @@
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="osu!.res" />

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

@@ -1,8 +1,14 @@
 // 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.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects.Types;
+using OpenTK;
 
 namespace osu.Game.Rulesets.Catch.Beatmaps
 {
@@ -18,6 +24,8 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
             CatchHitObject lastObj = null;
 
+            initialiseHyperDash(beatmap.HitObjects);
+
             foreach (var obj in beatmap.HitObjects)
             {
                 if (obj.NewCombo)
@@ -34,5 +42,49 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                 lastObj = obj;
             }
         }
+
+        private void initialiseHyperDash(List<CatchHitObject> objects)
+        {
+            // todo: add difficulty adjust.
+            double halfCatcherWidth = CatcherArea.CATCHER_SIZE * (objects.FirstOrDefault()?.Scale ?? 1) / CatchPlayfield.BASE_WIDTH / 2;
+
+            int lastDirection = 0;
+            double lastExcess = halfCatcherWidth;
+
+            int objCount = objects.Count;
+
+            for (int i = 0; i < objCount - 1; i++)
+            {
+                CatchHitObject currentObject = objects[i];
+
+                // not needed?
+                // if (currentObject is TinyDroplet) continue;
+
+                CatchHitObject nextObject = objects[i + 1];
+
+                // while (nextObject is TinyDroplet)
+                // {
+                //     if (++i == objCount - 1) break;
+                //     nextObject = objects[i + 1];
+                // }
+
+                int thisDirection = nextObject.X > currentObject.X ? 1 : -1;
+                double timeToNext = nextObject.StartTime - ((currentObject as IHasEndTime)?.EndTime ?? currentObject.StartTime) - 4;
+                double distanceToNext = Math.Abs(nextObject.X - currentObject.X) - (lastDirection == thisDirection ? lastExcess : halfCatcherWidth);
+
+                if (timeToNext * CatcherArea.Catcher.BASE_SPEED < distanceToNext)
+                {
+                    currentObject.HyperDashTarget = nextObject;
+                    lastExcess = halfCatcherWidth;
+                }
+                else
+                {
+                    //currentObject.DistanceToHyperDash = timeToNext - distanceToNext;
+                    lastExcess = MathHelper.Clamp(timeToNext - distanceToNext, 0, halfCatcherWidth);
+                }
+
+                lastDirection = thisDirection;
+            }
+        }
     }
 }

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

@@ -27,6 +27,16 @@ namespace osu.Game.Rulesets.Catch.Objects
 
         public float Scale { get; set; } = 1;
 
+        /// <summary>
+        /// Whether this fruit can initiate a hyperdash.
+        /// </summary>
+        public bool HyperDash => HyperDashTarget != null;
+
+        /// <summary>
+        /// The target fruit if we are to initiate a hyperdash.
+        /// </summary>
+        public CatchHitObject HyperDashTarget;
+
         public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
             base.ApplyDefaults(controlPointInfo, difficulty);

osu.Game.Rulesets.Catch/Objects/Drawable/DrawableFruit.cs

@@ -7,6 +7,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Catch.Objects.Drawable.Pieces;
 using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawable
 {
@@ -70,6 +71,20 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
                     }
                 }
             };
+
+            if (HitObject.HyperDash)
+            {
+                Add(new Pulp
+                {
+                    RelativePositionAxes = Axes.Both,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    AccentColour = Color4.Red,
+                    Blending = BlendingMode.Additive,
+                    Alpha = 0.5f,
+                    Scale = new Vector2(2)
+                });
+            }
         }
     }
 }

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

@@ -17,6 +17,7 @@ namespace osu.Game.Rulesets.Catch.Tests
     internal class TestCaseCatcherArea : OsuTestCase
     {
         private RulesetInfo catchRuleset;
+        private TestCatcherArea catcherArea;
 
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {
@@ -26,6 +27,7 @@ namespace osu.Game.Rulesets.Catch.Tests
         public TestCaseCatcherArea()
         {
             AddSliderStep<float>("CircleSize", 0, 8, 5, createCatcher);
+            AddToggleStep("Hyperdash", t => catcherArea.ToggleHyperDash(t));
         }
 
         private void createCatcher(float size)
@@ -33,7 +35,7 @@ namespace osu.Game.Rulesets.Catch.Tests
             Child = new CatchInputManager(catchRuleset)
             {
                 RelativeSizeAxes = Axes.Both,
-                Child = new CatcherArea(new BeatmapDifficulty { CircleSize = size })
+                Child = catcherArea = new TestCatcherArea(new BeatmapDifficulty { CircleSize = size })
                 {
                     Anchor = Anchor.CentreLeft,
                     Origin = Anchor.BottomLeft
@@ -46,5 +48,15 @@ namespace osu.Game.Rulesets.Catch.Tests
         {
             catchRuleset = rulesets.GetRuleset(2);
         }
+
+        private class TestCatcherArea : CatcherArea
+        {
+            public TestCatcherArea(BeatmapDifficulty beatmapDifficulty)
+                : base(beatmapDifficulty)
+            {
+            }
+
+            public void ToggleHyperDash(bool status) => MovableCatcher.HyperDashModifier = status ? 2 : 1;
+        }
     }
 }

osu.Game.Rulesets.Catch/Tests/TestCaseHyperdash.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 NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Objects;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    [TestFixture]
+    [Ignore("getting CI working")]
+    public class TestCaseHyperdash : Game.Tests.Visual.TestCasePlayer
+    {
+        public TestCaseHyperdash()
+            : base(typeof(CatchRuleset))
+        {
+        }
+
+        protected override Beatmap CreateBeatmap()
+        {
+            var beatmap = new Beatmap();
+
+            for (int i = 0; i < 512; i++)
+                if (i % 5 < 3)
+                    beatmap.HitObjects.Add(new Fruit { X = i % 10 < 5 ? 0.02f : 0.98f, StartTime = i * 100, NewCombo = i % 8 == 0 });
+
+            return beatmap;
+        }
+    }
+}

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

@@ -15,7 +15,7 @@ namespace osu.Game.Rulesets.Catch.UI
 {
     public class CatchPlayfield : ScrollingPlayfield
     {
-        public static readonly float BASE_WIDTH = 512;
+        public const float BASE_WIDTH = 512;
 
         protected override Container<Drawable> Content => content;
         private readonly Container<Drawable> content;
@@ -51,7 +51,7 @@ namespace osu.Game.Rulesets.Catch.UI
             };
         }
 
-        public bool CheckIfWeCanCatch(CatchHitObject obj) => catcherArea.CanCatch(obj);
+        public bool CheckIfWeCanCatch(CatchHitObject obj) => catcherArea.AttemptCatch(obj);
 
         public override void Add(DrawableHitObject h)
         {

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

@@ -14,6 +14,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -21,18 +22,18 @@ namespace osu.Game.Rulesets.Catch.UI
     {
         public const float CATCHER_SIZE = 172;
 
-        private readonly Catcher catcher;
+        protected readonly Catcher MovableCatcher;
 
         public Container ExplodingFruitTarget
         {
-            set { catcher.ExplodingFruitTarget = value; }
+            set { MovableCatcher.ExplodingFruitTarget = value; }
         }
 
         public CatcherArea(BeatmapDifficulty difficulty = null)
         {
             RelativeSizeAxes = Axes.X;
             Height = CATCHER_SIZE;
-            Child = catcher = new Catcher(difficulty)
+            Child = MovableCatcher = new Catcher(difficulty)
             {
                 AdditiveTarget = this,
             };
@@ -41,17 +42,17 @@ namespace osu.Game.Rulesets.Catch.UI
         public void Add(DrawableHitObject fruit, Vector2 absolutePosition)
         {
             fruit.RelativePositionAxes = Axes.None;
-            fruit.Position = new Vector2(catcher.ToLocalSpace(absolutePosition).X - catcher.DrawSize.X / 2, 0);
+            fruit.Position = new Vector2(MovableCatcher.ToLocalSpace(absolutePosition).X - MovableCatcher.DrawSize.X / 2, 0);
 
             fruit.Anchor = Anchor.TopCentre;
             fruit.Origin = Anchor.BottomCentre;
             fruit.Scale *= 0.7f;
             fruit.LifetimeEnd = double.MaxValue;
 
-            catcher.Add(fruit);
+            MovableCatcher.Add(fruit);
         }
 
-        public bool CanCatch(CatchHitObject obj) => Math.Abs(catcher.Position.X - obj.X) < catcher.DrawSize.X * Math.Abs(catcher.Scale.X) / DrawSize.X / 2;
+        public bool AttemptCatch(CatchHitObject obj) => MovableCatcher.AttemptCatch(obj);
 
         public class Catcher : Container, IKeyBindingHandler<CatchAction>
         {
@@ -105,14 +106,35 @@ namespace osu.Game.Rulesets.Catch.UI
 
                     dashing = value;
 
-                    if (dashing)
+                    Trail |= dashing;
-                        Schedule(addAdditiveSprite);
                 }
             }
 
-            private void addAdditiveSprite()
+            private bool trail;
+
+            /// <summary>
+            /// Activate or deactive the trail. Will be automatically deactivated when conditions to keep the trail displayed are no longer met.
+            /// </summary>
+            protected bool Trail
             {
-                if (!dashing || AdditiveTarget == null) return;
+                get { return trail; }
+                set
+                {
+                    if (value == trail) return;
+
+                    trail = value;
+
+                    if (Trail)
+                        beginTrail();
+                }
+            }
+
+            private void beginTrail()
+            {
+                Trail &= dashing || HyperDashing;
+                Trail &= AdditiveTarget != null;
+
+                if (!Trail) return;
 
                 var additive = createCatcherSprite();
 
@@ -120,6 +142,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 additive.OriginPosition = additive.OriginPosition + new Vector2(DrawWidth / 2, 0); // also temporary to align sprite correctly.
                 additive.Position = Position;
                 additive.Scale = Scale;
+                additive.Colour = HyperDashing ? Color4.Red : Color4.White;
                 additive.RelativePositionAxes = RelativePositionAxes;
                 additive.Blending = BlendingMode.Additive;
 
@@ -127,7 +150,7 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 additive.FadeTo(0.4f).FadeOut(800, Easing.OutQuint).Expire();
 
-                Scheduler.AddDelayed(addAdditiveSprite, 50);
+                Scheduler.AddDelayed(beginTrail, HyperDashing ? 25 : 50);
             }
 
             private Sprite createCatcherSprite() => new Sprite
@@ -138,6 +161,10 @@ namespace osu.Game.Rulesets.Catch.UI
                 OriginPosition = new Vector2(-3, 10) // temporary until the sprite is aligned correctly.
             };
 
+            /// <summary>
+            /// Add a caught fruit to the catcher's stack.
+            /// </summary>
+            /// <param name="fruit">The fruit that was caught.</param>
             public void Add(DrawableHitObject fruit)
             {
                 float distance = fruit.DrawSize.X / 2 * fruit.Scale.X;
@@ -150,10 +177,80 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 caughtFruit.Add(fruit);
 
-                if (((CatchHitObject)fruit.HitObject).LastInCombo)
+                var catchObject = (CatchHitObject)fruit.HitObject;
+
+                if (catchObject.LastInCombo)
                     explode();
             }
 
+            /// <summary>
+            /// Let the catcher attempt to catch a fruit.
+            /// </summary>
+            /// <param name="fruit">The fruit to catch.</param>
+            /// <returns>Whether the catch is possible.</returns>
+            public bool AttemptCatch(CatchHitObject fruit)
+            {
+                const double relative_catcher_width = CATCHER_SIZE / 2;
+
+                // this stuff wil disappear once we move fruit to non-relative coordinate space in the future.
+                var catchObjectPosition = fruit.X * CatchPlayfield.BASE_WIDTH;
+                var catcherPosition = Position.X * CatchPlayfield.BASE_WIDTH;
+
+                var validCatch =
+                    catchObjectPosition >= catcherPosition - relative_catcher_width / 2 &&
+                    catchObjectPosition <= catcherPosition + relative_catcher_width / 2;
+
+                if (validCatch && fruit.HyperDash)
+                {
+                    HyperDashModifier = Math.Abs(fruit.HyperDashTarget.X - fruit.X) / Math.Abs(fruit.HyperDashTarget.StartTime - fruit.StartTime) / BASE_SPEED;
+                    HyperDashDirection = fruit.HyperDashTarget.X - fruit.X;
+                }
+                else
+                    HyperDashModifier = 1;
+
+                return validCatch;
+            }
+
+            /// <summary>
+            /// Whether we are hypderdashing or not.
+            /// </summary>
+            public bool HyperDashing => hyperDashModifier != 1;
+
+            private double hyperDashModifier = 1;
+
+            /// <summary>
+            /// The direction in which hyperdash is allowed. 0 allows both directions.
+            /// </summary>
+            public double HyperDashDirection;
+
+            /// <summary>
+            /// The speed modifier resultant from hyperdash. Will trigger hyperdash when not equal to 1.
+            /// </summary>
+            public double HyperDashModifier
+            {
+                get { return hyperDashModifier; }
+                set
+                {
+                    if (value == hyperDashModifier) return;
+                    hyperDashModifier = value;
+
+                    const float transition_length = 180;
+
+                    if (HyperDashing)
+                    {
+                        this.FadeColour(Color4.OrangeRed, transition_length, Easing.OutQuint);
+                        this.FadeTo(0.2f, transition_length, Easing.OutQuint);
+                        Trail = true;
+                    }
+                    else
+                    {
+                        HyperDashDirection = 0;
+                        this.FadeColour(Color4.White, transition_length, Easing.OutQuint);
+                        this.FadeTo(1, transition_length, Easing.OutQuint);
+                    }
+                }
+            }
+
             public bool OnPressed(CatchAction action)
             {
                 switch (action)
@@ -201,10 +298,15 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 if (currentDirection == 0) return;
 
+                var direction = Math.Sign(currentDirection);
+
                 double dashModifier = Dashing ? 1 : 0.5;
 
-                Scale = new Vector2(Math.Abs(Scale.X) * Math.Sign(currentDirection), Scale.Y);
+                if (hyperDashModifier != 1 && (HyperDashDirection == 0 || direction == Math.Sign(HyperDashDirection)))
-                X = (float)MathHelper.Clamp(X + Math.Sign(currentDirection) * Clock.ElapsedFrameTime * BASE_SPEED * dashModifier, 0, 1);
+                    dashModifier = hyperDashModifier;
+
+                Scale = new Vector2(Math.Abs(Scale.X) * direction, Scale.Y);
+                X = (float)MathHelper.Clamp(X + direction * Clock.ElapsedFrameTime * BASE_SPEED * dashModifier, 0, 1);
             }
 
             private void explode()

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -21,7 +21,6 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -67,6 +66,7 @@
     <Compile Include="Tests\TestCaseCatchStacker.cs" />
     <Compile Include="Tests\TestCasePerformancePoints.cs" />
     <Compile Include="Tests\TestCaseCatchPlayer.cs" />
+    <Compile Include="Tests\TestCaseHyperdash.cs" />
     <Compile Include="UI\CatcherArea.cs" />
     <Compile Include="UI\CatchRulesetContainer.cs" />
     <Compile Include="UI\CatchPlayfield.cs" />
@@ -74,9 +74,6 @@
     <Compile Include="Mods\CatchMod.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="packages.config" />
@@ -93,6 +90,9 @@
       <Private>True</Private>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -21,7 +21,6 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -99,9 +98,6 @@
     <Compile Include="Timing\ManiaSpeedAdjustmentContainer.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="packages.config" />
@@ -118,6 +114,9 @@
       <Private>True</Private>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.

osu.Game.Rulesets.Osu/Edit/OsuEditPlayfield.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
+
+using osu.Framework.Graphics.Cursor;
+using osu.Game.Rulesets.Osu.UI;
+
+namespace osu.Game.Rulesets.Osu.Edit
+{
+    public class OsuEditPlayfield : OsuPlayfield
+    {
+        protected override CursorContainer CreateCursor() => null;
+    }
+}

osu.Game.Rulesets.Osu/Edit/OsuEditRulesetContainer.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.Game.Beatmaps;
+using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.Edit
+{
+    public class OsuEditRulesetContainer : OsuRulesetContainer
+    {
+        public OsuEditRulesetContainer(Ruleset ruleset, WorkingBeatmap beatmap, bool isForCurrentRuleset)
+            : base(ruleset, beatmap, isForCurrentRuleset)
+        {
+        }
+
+        protected override Playfield CreatePlayfield() => new OsuEditPlayfield();
+    }
+}

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

@@ -0,0 +1,29 @@
+// 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.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.Edit
+{
+    public class OsuHitObjectComposer : HitObjectComposer
+    {
+        public OsuHitObjectComposer(Ruleset ruleset)
+            : base(ruleset)
+        {
+        }
+
+        protected override RulesetContainer CreateRulesetContainer(Ruleset ruleset, WorkingBeatmap beatmap) => new OsuEditRulesetContainer(ruleset, beatmap, true);
+
+        protected override IReadOnlyList<ICompositionTool> CompositionTools => new ICompositionTool[]
+        {
+            new HitObjectCompositionTool<HitCircle>(),
+            new HitObjectCompositionTool<Slider>(),
+            new HitObjectCompositionTool<Spinner>()
+        };
+    }
+}

osu.Game.Rulesets.Osu/OsuInputManager.cs

@@ -1,6 +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 System.Collections.Generic;
 using System.ComponentModel;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.UI;
@@ -9,6 +10,8 @@ namespace osu.Game.Rulesets.Osu
 {
     public class OsuInputManager : RulesetInputManager<OsuAction>
     {
+        public IEnumerable<OsuAction> PressedActions => KeyBindingContainer.PressedActions;
+
         public OsuInputManager(RulesetInfo ruleset) : base(ruleset, 0, SimultaneousBindingMode.Unique)
         {
         }

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -16,6 +16,8 @@ using osu.Game.Overlays.Settings;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Osu.Scoring;
+using osu.Game.Rulesets.Osu.Edit;
+using osu.Game.Rulesets.Edit;
 
 namespace osu.Game.Rulesets.Osu
 {
@@ -118,6 +120,8 @@ namespace osu.Game.Rulesets.Osu
 
         public override PerformanceCalculator CreatePerformanceCalculator(Beatmap beatmap, Score score) => new OsuPerformanceCalculator(this, beatmap, score);
 
+        public override HitObjectComposer CreateHitObjectComposer() => new OsuHitObjectComposer(this);
+
         public override string Description => "osu!";
 
         public override SettingsSubsection CreateSettings() => new OsuSettings();

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

@@ -13,6 +13,7 @@ using System.Linq;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Osu.UI.Cursor;
+using osu.Framework.Graphics.Cursor;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
@@ -65,7 +66,10 @@ namespace osu.Game.Rulesets.Osu.UI
         protected override void LoadComplete()
         {
             base.LoadComplete();
-            AddInternal(new GameplayCursor());
+
+            var cursor = CreateCursor();
+            if (cursor != null)
+                AddInternal(cursor);
         }
 
         public override void Add(DrawableHitObject h)
@@ -102,5 +106,7 @@ namespace osu.Game.Rulesets.Osu.UI
 
             judgementLayer.Add(explosion);
         }
+
+        protected virtual CursorContainer CreateCursor() => new GameplayCursor();
     }
 }

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -22,7 +22,6 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -49,6 +48,9 @@
   <ItemGroup>
     <Compile Include="Beatmaps\OsuBeatmapConverter.cs" />
     <Compile Include="Beatmaps\OsuBeatmapProcessor.cs" />
+    <Compile Include="Edit\OsuEditPlayfield.cs" />
+    <Compile Include="Edit\OsuEditRulesetContainer.cs" />
+    <Compile Include="Edit\OsuHitObjectComposer.cs" />
     <Compile Include="Objects\Drawables\DrawableOsuHitObject.cs" />
     <Compile Include="Objects\Drawables\Connections\ConnectionRenderer.cs" />
     <Compile Include="Objects\Drawables\Connections\FollowPointRenderer.cs" />
@@ -105,9 +107,6 @@
     <Compile Include="Replays\OsuAutoGeneratorBase.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="packages.config" />
@@ -124,7 +123,9 @@
       <Private>True</Private>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.

osu.Game.Rulesets.Taiko/osu.Game.Rulesets.Taiko.csproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -21,7 +21,6 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -96,9 +95,6 @@
     <Compile Include="Mods\TaikoMod.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="packages.config" />
@@ -115,6 +111,9 @@
       <Private>True</Private>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.

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

@@ -0,0 +1,214 @@
+// 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.IO;
+using NUnit.Framework;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Game.Tests.Resources;
+using System.Linq;
+using osu.Game.Audio;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.Beatmaps.Timing;
+
+namespace osu.Game.Tests.Beatmaps.Formats
+{
+    [TestFixture]
+    public class LegacyBeatmapDecoderTest
+    {
+        [Test]
+        public void TestDecodeBeatmapGeneral()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var beatmap = decoder.DecodeBeatmap(stream);
+                var beatmapInfo = beatmap.BeatmapInfo;
+                var metadata = beatmap.Metadata;
+
+                Assert.AreEqual("03. Renatus - Soleily 192kbps.mp3", metadata.AudioFile);
+                Assert.AreEqual(0, beatmapInfo.AudioLeadIn);
+                Assert.AreEqual(164471, metadata.PreviewTime);
+                Assert.IsFalse(beatmapInfo.Countdown);
+                Assert.AreEqual(0.7f, beatmapInfo.StackLeniency);
+                Assert.IsTrue(beatmapInfo.RulesetID == 0);
+                Assert.IsFalse(beatmapInfo.LetterboxInBreaks);
+                Assert.IsFalse(beatmapInfo.SpecialStyle);
+                Assert.IsFalse(beatmapInfo.WidescreenStoryboard);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapEditor()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var beatmapInfo = decoder.DecodeBeatmap(stream).BeatmapInfo;
+
+                int[] expectedBookmarks =
+                {
+                    11505, 22054, 32604, 43153, 53703, 64252, 74802, 85351,
+                    95901, 106450, 116999, 119637, 130186, 140735, 151285,
+                    161834, 164471, 175020, 185570, 196119, 206669, 209306
+                };
+                Assert.AreEqual(expectedBookmarks.Length, beatmapInfo.Bookmarks.Length);
+                for (int i = 0; i < expectedBookmarks.Length; i++)
+                    Assert.AreEqual(expectedBookmarks[i], beatmapInfo.Bookmarks[i]);
+                Assert.AreEqual(1.8, beatmapInfo.DistanceSpacing);
+                Assert.AreEqual(4, beatmapInfo.BeatDivisor);
+                Assert.AreEqual(4, beatmapInfo.GridSize);
+                Assert.AreEqual(2, beatmapInfo.TimelineZoom);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapMetadata()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var beatmap = decoder.DecodeBeatmap(stream);
+                var beatmapInfo = beatmap.BeatmapInfo;
+                var metadata = beatmap.Metadata;
+
+                Assert.AreEqual("Renatus", metadata.Title);
+                Assert.AreEqual("Renatus", metadata.TitleUnicode);
+                Assert.AreEqual("Soleily", metadata.Artist);
+                Assert.AreEqual("Soleily", metadata.ArtistUnicode);
+                Assert.AreEqual("Gamu", metadata.AuthorString);
+                Assert.AreEqual("Insane", beatmapInfo.Version);
+                Assert.AreEqual(string.Empty, metadata.Source);
+                Assert.AreEqual("MBC7 Unisphere 地球ヤバイEP Chikyu Yabai", metadata.Tags);
+                Assert.AreEqual(557821, beatmapInfo.OnlineBeatmapID);
+                Assert.AreEqual(241526, metadata.OnlineBeatmapSetID);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapDifficulty()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var difficulty = decoder.DecodeBeatmap(stream).BeatmapInfo.BaseDifficulty;
+
+                Assert.AreEqual(6.5f, difficulty.DrainRate);
+                Assert.AreEqual(4, difficulty.CircleSize);
+                Assert.AreEqual(8, difficulty.OverallDifficulty);
+                Assert.AreEqual(9, difficulty.ApproachRate);
+                Assert.AreEqual(1.8f, difficulty.SliderMultiplier);
+                Assert.AreEqual(2, difficulty.SliderTickRate);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapEvents()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var beatmap = decoder.DecodeBeatmap(stream);
+                var metadata = beatmap.Metadata;
+                var breakPoint = beatmap.Breaks[0];
+
+                Assert.AreEqual("machinetop_background.jpg", metadata.BackgroundFile);
+                Assert.AreEqual(122474, breakPoint.StartTime);
+                Assert.AreEqual(140135, breakPoint.EndTime);
+                Assert.IsTrue(breakPoint.HasEffect);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapTimingPoints()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var beatmap = decoder.DecodeBeatmap(stream);
+                var controlPoints = beatmap.ControlPointInfo;
+
+                Assert.AreEqual(4, controlPoints.TimingPoints.Count);
+                var timingPoint = controlPoints.TimingPoints[0];
+                Assert.AreEqual(956, timingPoint.Time);
+                Assert.AreEqual(329.67032967033d, timingPoint.BeatLength);
+                Assert.AreEqual(TimeSignatures.SimpleQuadruple, timingPoint.TimeSignature);
+
+                Assert.AreEqual(5, controlPoints.DifficultyPoints.Count);
+                var difficultyPoint = controlPoints.DifficultyPoints[0];
+                Assert.AreEqual(116999, difficultyPoint.Time);
+                Assert.AreEqual(0.75000000000000189d, difficultyPoint.SpeedMultiplier);
+
+                Assert.AreEqual(34, controlPoints.SoundPoints.Count);
+                var soundPoint = controlPoints.SoundPoints[0];
+                Assert.AreEqual(956, soundPoint.Time);
+                Assert.AreEqual("soft", soundPoint.SampleBank);
+                Assert.AreEqual(60, soundPoint.SampleVolume);
+
+                Assert.AreEqual(8, controlPoints.EffectPoints.Count);
+                var effectPoint = controlPoints.EffectPoints[0];
+                Assert.AreEqual(53703, effectPoint.Time);
+                Assert.IsTrue(effectPoint.KiaiMode);
+                Assert.IsFalse(effectPoint.OmitFirstBarLine);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapColors()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var comboColors = decoder.DecodeBeatmap(stream).ComboColors;
+
+                Color4[] expectedColors =
+                {
+                    new Color4(142, 199, 255, 255),
+                    new Color4(255, 128, 128, 255),
+                    new Color4(128, 255, 255, 255),
+                    new Color4(128, 255, 128, 255),
+                    new Color4(255, 187, 255, 255),
+                    new Color4(255, 177, 140, 255),
+                };
+                Assert.AreEqual(expectedColors.Length, comboColors.Count);
+                for (int i = 0; i < expectedColors.Length; i++)
+                    Assert.AreEqual(expectedColors[i], comboColors[i]);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapHitObjects()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var hitObjects = decoder.DecodeBeatmap(stream).HitObjects;
+
+                var curveData = hitObjects[0] as IHasCurve;
+                var positionData = hitObjects[0] as IHasPosition;
+
+                Assert.IsNotNull(positionData);
+                Assert.IsNotNull(curveData);
+                Assert.AreEqual(new Vector2(192, 168), positionData.Position);
+                Assert.AreEqual(956, hitObjects[0].StartTime);
+                Assert.IsTrue(hitObjects[0].Samples.Any(s => s.Name == SampleInfo.HIT_NORMAL));
+
+                positionData = hitObjects[1] as IHasPosition;
+
+                Assert.IsNotNull(positionData);
+                Assert.AreEqual(new Vector2(304, 56), positionData.Position);
+                Assert.AreEqual(1285, hitObjects[1].StartTime);
+                Assert.IsTrue(hitObjects[1].Samples.Any(s => s.Name == SampleInfo.HIT_CLAP));
+            }
+        }
+    }
+}

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

@@ -0,0 +1,90 @@
+// 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.IO;
+using System.Linq;
+using NUnit.Framework;
+using OpenTK;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.Storyboards;
+using osu.Game.Tests.Resources;
+
+namespace osu.Game.Tests.Beatmaps.Formats
+{
+    [TestFixture]
+    public class LegacyStoryboardDecoderTest
+    {
+        [Test]
+        public void TestDecodeStoryboardEvents()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+            using (var resStream = Resource.OpenResource("Himeringo - Yotsuya-san ni Yoroshiku (RLC) [Winber1's Extreme].osu"))
+            using (var stream = new StreamReader(resStream))
+            {
+                var storyboard = decoder.GetStoryboardDecoder().DecodeStoryboard(stream);
+
+                Assert.IsTrue(storyboard.HasDrawable);
+                Assert.AreEqual(4, storyboard.Layers.Count());
+
+                StoryboardLayer background = storyboard.Layers.FirstOrDefault(l => l.Depth == 3);
+                Assert.IsNotNull(background);
+                Assert.AreEqual(16, background.Elements.Count());
+                Assert.IsTrue(background.EnabledWhenFailing);
+                Assert.IsTrue(background.EnabledWhenPassing);
+                Assert.AreEqual("Background", background.Name);
+
+                StoryboardLayer fail = storyboard.Layers.FirstOrDefault(l => l.Depth == 2);
+                Assert.IsNotNull(fail);
+                Assert.AreEqual(0, fail.Elements.Count());
+                Assert.IsTrue(fail.EnabledWhenFailing);
+                Assert.IsFalse(fail.EnabledWhenPassing);
+                Assert.AreEqual("Fail", fail.Name);
+
+                StoryboardLayer pass = storyboard.Layers.FirstOrDefault(l => l.Depth == 1);
+                Assert.IsNotNull(pass);
+                Assert.AreEqual(0, pass.Elements.Count());
+                Assert.IsFalse(pass.EnabledWhenFailing);
+                Assert.IsTrue(pass.EnabledWhenPassing);
+                Assert.AreEqual("Pass", pass.Name);
+
+                StoryboardLayer foreground = storyboard.Layers.FirstOrDefault(l => l.Depth == 0);
+                Assert.IsNotNull(foreground);
+                Assert.AreEqual(151, foreground.Elements.Count());
+                Assert.IsTrue(foreground.EnabledWhenFailing);
+                Assert.IsTrue(foreground.EnabledWhenPassing);
+                Assert.AreEqual("Foreground", foreground.Name);
+
+                int spriteCount = background.Elements.Count(x => x.GetType() == typeof(StoryboardSprite));
+                int animationCount = background.Elements.Count(x => x.GetType() == typeof(StoryboardAnimation));
+                int sampleCount = background.Elements.Count(x => x.GetType() == typeof(StoryboardSample));
+
+                Assert.AreEqual(15, spriteCount);
+                Assert.AreEqual(1, animationCount);
+                Assert.AreEqual(0, sampleCount);
+                Assert.AreEqual(background.Elements.Count(), spriteCount + animationCount + sampleCount);
+
+                var sprite = background.Elements.ElementAt(0) as StoryboardSprite;
+                Assert.NotNull(sprite);
+                Assert.IsTrue(sprite.HasCommands);
+                Assert.AreEqual(new Vector2(320, 240), sprite.InitialPosition);
+                Assert.IsTrue(sprite.IsDrawable);
+                Assert.AreEqual(Anchor.Centre, sprite.Origin);
+                Assert.AreEqual("SB/lyric/ja-21.png", sprite.Path);
+
+                var animation = background.Elements.ElementAt(12) as StoryboardAnimation;
+                Assert.NotNull(animation);
+                Assert.AreEqual(141175, animation.EndTime);
+                Assert.AreEqual(10, animation.FrameCount);
+                Assert.AreEqual(30, animation.FrameDelay);
+                Assert.IsTrue(animation.HasCommands);
+                Assert.AreEqual(new Vector2(320, 240), animation.InitialPosition);
+                Assert.IsTrue(animation.IsDrawable);
+                Assert.AreEqual(AnimationLoopType.LoopForever, animation.LoopType);
+                Assert.AreEqual(Anchor.Centre, animation.Origin);
+                Assert.AreEqual("SB/red jitter/red_0000.jpg", animation.Path);
+                Assert.AreEqual(78993, animation.StartTime);
+            }
+        }
+    }
+}

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

@@ -1,146 +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.IO;
-using NUnit.Framework;
-using OpenTK;
-using OpenTK.Graphics;
-using osu.Game.Beatmaps.Formats;
-using osu.Game.Tests.Resources;
-using System.Linq;
-using osu.Game.Audio;
-using osu.Game.Rulesets.Objects.Types;
-
-namespace osu.Game.Tests.Beatmaps.Formats
-{
-    [TestFixture]
-    public class OsuLegacyDecoderTest
-    {
-        [Test]
-        public void TestDecodeMetadata()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmap = decoder.Decode(new StreamReader(stream));
-                var meta = beatmap.BeatmapInfo.Metadata;
-                Assert.AreEqual(241526, meta.OnlineBeatmapSetID);
-                Assert.AreEqual("Soleily", meta.Artist);
-                Assert.AreEqual("Soleily", meta.ArtistUnicode);
-                Assert.AreEqual("03. Renatus - Soleily 192kbps.mp3", meta.AudioFile);
-                Assert.AreEqual("Gamu", meta.AuthorString);
-                Assert.AreEqual("machinetop_background.jpg", meta.BackgroundFile);
-                Assert.AreEqual(164471, meta.PreviewTime);
-                Assert.AreEqual(string.Empty, meta.Source);
-                Assert.AreEqual("MBC7 Unisphere 地球ヤバイEP Chikyu Yabai", meta.Tags);
-                Assert.AreEqual("Renatus", meta.Title);
-                Assert.AreEqual("Renatus", meta.TitleUnicode);
-            }
-        }
-
-        [Test]
-        public void TestDecodeGeneral()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmapInfo = decoder.Decode(new StreamReader(stream)).BeatmapInfo;
-                Assert.AreEqual(0, beatmapInfo.AudioLeadIn);
-                Assert.AreEqual(false, beatmapInfo.Countdown);
-                Assert.AreEqual(0.7f, beatmapInfo.StackLeniency);
-                Assert.AreEqual(false, beatmapInfo.SpecialStyle);
-                Assert.IsTrue(beatmapInfo.RulesetID == 0);
-                Assert.AreEqual(false, beatmapInfo.LetterboxInBreaks);
-                Assert.AreEqual(false, beatmapInfo.WidescreenStoryboard);
-            }
-        }
-
-        [Test]
-        public void TestDecodeEditor()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmap = decoder.Decode(new StreamReader(stream)).BeatmapInfo;
-                int[] expectedBookmarks =
-                {
-                    11505, 22054, 32604, 43153, 53703, 64252, 74802, 85351,
-                    95901, 106450, 116999, 119637, 130186, 140735, 151285,
-                    161834, 164471, 175020, 185570, 196119, 206669, 209306
-                };
-                Assert.AreEqual(expectedBookmarks.Length, beatmap.Bookmarks.Length);
-                for (int i = 0; i < expectedBookmarks.Length; i++)
-                    Assert.AreEqual(expectedBookmarks[i], beatmap.Bookmarks[i]);
-                Assert.AreEqual(1.8, beatmap.DistanceSpacing);
-                Assert.AreEqual(4, beatmap.BeatDivisor);
-                Assert.AreEqual(4, beatmap.GridSize);
-                Assert.AreEqual(2, beatmap.TimelineZoom);
-            }
-        }
-
-        [Test]
-        public void TestDecodeDifficulty()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmap = decoder.Decode(new StreamReader(stream));
-                var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
-                Assert.AreEqual(6.5f, difficulty.DrainRate);
-                Assert.AreEqual(4, difficulty.CircleSize);
-                Assert.AreEqual(8, difficulty.OverallDifficulty);
-                Assert.AreEqual(9, difficulty.ApproachRate);
-                Assert.AreEqual(1.8f, difficulty.SliderMultiplier);
-                Assert.AreEqual(2, difficulty.SliderTickRate);
-            }
-        }
-
-        [Test]
-        public void TestDecodeColors()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmap = decoder.Decode(new StreamReader(stream));
-                Color4[] expected =
-                {
-                    new Color4(142, 199, 255, 255),
-                    new Color4(255, 128, 128, 255),
-                    new Color4(128, 255, 255, 255),
-                    new Color4(128, 255, 128, 255),
-                    new Color4(255, 187, 255, 255),
-                    new Color4(255, 177, 140, 255),
-                };
-                Assert.AreEqual(expected.Length, beatmap.ComboColors.Count);
-                for (int i = 0; i < expected.Length; i++)
-                    Assert.AreEqual(expected[i], beatmap.ComboColors[i]);
-            }
-        }
-
-        [Test]
-        public void TestDecodeHitObjects()
-        {
-            var decoder = new OsuLegacyDecoder();
-            using (var stream = Resource.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
-            {
-                var beatmap = decoder.Decode(new StreamReader(stream));
-
-                var curveData = beatmap.HitObjects[0] as IHasCurve;
-                var positionData = beatmap.HitObjects[0] as IHasPosition;
-
-                Assert.IsNotNull(positionData);
-                Assert.IsNotNull(curveData);
-                Assert.AreEqual(new Vector2(192, 168), positionData.Position);
-                Assert.AreEqual(956, beatmap.HitObjects[0].StartTime);
-                Assert.IsTrue(beatmap.HitObjects[0].Samples.Any(s => s.Name == SampleInfo.HIT_NORMAL));
-
-                positionData = beatmap.HitObjects[1] as IHasPosition;
-
-                Assert.IsNotNull(positionData);
-                Assert.AreEqual(new Vector2(304, 56), positionData.Position);
-                Assert.AreEqual(1285, beatmap.HitObjects[1].StartTime);
-                Assert.IsTrue(beatmap.HitObjects[1].Samples.Any(s => s.Name == SampleInfo.HIT_CLAP));
-            }
-        }
-    }
-}

osu.Game.Tests/Beatmaps/IO/OszArchiveReaderTest.cs

@@ -50,7 +50,7 @@ namespace osu.Game.Tests.Beatmaps.IO
 
                 BeatmapMetadata meta;
                 using (var stream = new StreamReader(reader.GetStream("Soleily - Renatus (Deif) [Platter].osu")))
-                    meta = BeatmapDecoder.GetDecoder(stream).Decode(stream).Metadata;
+                    meta = Decoder.GetDecoder(stream).DecodeBeatmap(stream).Metadata;
 
                 Assert.AreEqual(241526, meta.OnlineBeatmapSetID);
                 Assert.AreEqual("Soleily", meta.Artist);

osu.Game.Tests/Visual/TestCaseEditorCompose.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;
+using osu.Framework.Allocation;
+using osu.Game.Beatmaps;
+using osu.Game.Screens.Edit.Screens.Compose;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseEditorCompose : OsuTestCase
+    {
+        private readonly Random random;
+        private readonly Compose compose;
+
+        public TestCaseEditorCompose()
+        {
+            random = new Random(1337);
+
+            Add(compose = new Compose());
+            AddStep("Next beatmap", nextBeatmap);
+        }
+
+        private OsuGameBase osuGame;
+        private BeatmapManager beatmaps;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGameBase osuGame, BeatmapManager beatmaps)
+        {
+            this.osuGame = osuGame;
+            this.beatmaps = beatmaps;
+
+            compose.Beatmap.BindTo(osuGame.Beatmap);
+        }
+
+        private void nextBeatmap()
+        {
+            var sets = beatmaps.GetAllUsableBeatmapSets();
+            if (sets.Count == 0)
+                return;
+
+            var b = sets[random.Next(0, sets.Count)].Beatmaps[0];
+            osuGame.Beatmap.Value = beatmaps.GetWorkingBeatmap(b);
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseEditorComposeRadioButtons.cs

@@ -0,0 +1,41 @@
+// 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.Framework.Graphics;
+using osu.Game.Screens.Edit.Screens.Compose.RadioButtons;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseEditorComposeRadioButtons : OsuTestCase
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[] { typeof(DrawableRadioButton) };
+
+        public TestCaseEditorComposeRadioButtons()
+        {
+            RadioButtonCollection collection;
+            Add(collection = new RadioButtonCollection
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Width = 150,
+                Items = new[]
+                {
+                    new RadioButton("Item 1", () => { }),
+                    new RadioButton("Item 2", () => { }),
+                    new RadioButton("Item 3", () => { }),
+                    new RadioButton("Item 4", () => { }),
+                    new RadioButton("Item 5", () => { })
+                }
+            });
+
+            for (int i = 0; i < collection.Items.Count; i++)
+            {
+                int l = i;
+                AddStep($"Select item {l + 1}", () => collection.Items[l].Select());
+                AddStep($"Deselect item {l + 1}", () => collection.Items[l].Deselect());
+            }
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseStoryboard.cs

@@ -79,7 +79,7 @@ namespace osu.Game.Tests.Visual
             var decoupledClock = new DecoupleableInterpolatingFramedClock { IsCoupled = true };
             storyboardContainer.Clock = decoupledClock;
 
-            storyboard = working.Beatmap.Storyboard.CreateDrawable(beatmapBacking);
+            storyboard = working.Storyboard.CreateDrawable(beatmapBacking);
             storyboard.Passing = false;
 
             storyboardContainer.Add(storyboard);

osu.Game.Tests/osu.Game.Tests.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -19,7 +20,6 @@
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>true</Optimize>
@@ -45,9 +45,6 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="packages.config" />
     <None Include="OpenTK.dll.config" />
@@ -86,10 +83,11 @@
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Beatmaps\Formats\LegacyStoryboardDecoderTest.cs" />
     <Compile Include="Beatmaps\IO\OszArchiveReaderTest.cs" />
     <Compile Include="Beatmaps\IO\ImportBeatmapTest.cs" />
     <Compile Include="Resources\Resource.cs" />
-    <Compile Include="Beatmaps\Formats\OsuLegacyDecoderTest.cs" />
+    <Compile Include="Beatmaps\Formats\LegacyBeatmapDecoderTest.cs" />
     <Compile Include="Visual\TestCaseBeatmapDetailArea.cs" />
     <Compile Include="Visual\TestCaseBeatmapDetails.cs" />
     <Compile Include="Visual\TestCaseBeatmapOptionsOverlay.cs" />
@@ -105,6 +103,8 @@
     <Compile Include="Visual\TestCaseDrawableRoom.cs" />
     <Compile Include="Visual\TestCaseDrawings.cs" />
     <Compile Include="Visual\TestCaseEditor.cs" />
+    <Compile Include="Visual\TestCaseEditorCompose.cs" />
+    <Compile Include="Visual\TestCaseEditorComposeRadioButtons.cs" />
     <Compile Include="Visual\TestCaseEditorComposeTimeline.cs" />
     <Compile Include="Visual\TestCaseEditorMenuBar.cs" />
     <Compile Include="Visual\TestCaseEditorSummaryTimeline.cs" />
@@ -148,6 +148,7 @@
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Resources\Soleily - Renatus %28Gamu%29 [Insane].osu" />
+    <EmbeddedResource Include="Resources\Himeringo - Yotsuya-san ni Yoroshiku %28RLC%29 [Winber1%27s Extreme].osu" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>

osu.Game.props

@@ -0,0 +1,13 @@
+<!-- Contains required properties for osu!framework projects. -->
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\packages\Microsoft.Net.Compilers.2.3.2\build\Microsoft.Net.Compilers.props" Condition="Exists('$(SolutionDir)\packages\Microsoft.Net.Compilers.2.3.2\build\Microsoft.Net.Compilers.props')" />
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup Label="C#">
+    <LangVersion>7</LangVersion>
+  </PropertyGroup>
+  <ItemGroup Label="License">
+    <None Include="..\osu.licenseheader">
+      <Link>osu.licenseheader</Link>
+    </None>
+  </ItemGroup>
+</Project>

osu.Game/Beatmaps/Beatmap.cs

@@ -8,7 +8,6 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.IO.Serialization;
-using osu.Game.Storyboards;
 
 namespace osu.Game.Beatmaps
 {
@@ -41,11 +40,6 @@ namespace osu.Game.Beatmaps
         /// </summary>
         public double TotalBreakTime => Breaks.Sum(b => b.Duration);
 
-        /// <summary>
-        /// The Beatmap's Storyboard.
-        /// </summary>
-        public Storyboard Storyboard = new Storyboard();
-
         /// <summary>
         /// Constructs a new beatmap.
         /// </summary>
@@ -57,7 +51,6 @@ namespace osu.Game.Beatmaps
             Breaks = original?.Breaks ?? Breaks;
             ComboColors = original?.ComboColors ?? ComboColors;
             HitObjects = original?.HitObjects ?? HitObjects;
-            Storyboard = original?.Storyboard ?? Storyboard;
 
             if (original == null && Metadata == null)
             {

osu.Game/Beatmaps/BeatmapManager.cs

@@ -25,6 +25,7 @@ using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Rulesets;
+using osu.Game.Storyboards;
 
 namespace osu.Game.Beatmaps
 {
@@ -494,17 +495,23 @@ namespace osu.Game.Beatmaps
             BeatmapMetadata metadata;
 
             using (var stream = new StreamReader(reader.GetStream(mapName)))
-                metadata = BeatmapDecoder.GetDecoder(stream).Decode(stream).Metadata;
+                metadata = Decoder.GetDecoder(stream).DecodeBeatmap(stream).Metadata;
+
 
             // check if a set already exists with the same online id.
-            beatmapSet = beatmaps.BeatmapSets.FirstOrDefault(b => b.OnlineBeatmapSetID == metadata.OnlineBeatmapSetID) ?? new BeatmapSetInfo
+            if (metadata.OnlineBeatmapSetID != null)
-            {
+                beatmapSet = beatmaps.BeatmapSets.FirstOrDefault(b => b.OnlineBeatmapSetID == metadata.OnlineBeatmapSetID);
-                OnlineBeatmapSetID = metadata.OnlineBeatmapSetID,
+
-                Beatmaps = new List<BeatmapInfo>(),
+            if (beatmapSet == null)
-                Hash = hash,
+                beatmapSet = new BeatmapSetInfo
-                Files = fileInfos,
+                {
-                Metadata = metadata
+                    OnlineBeatmapSetID = metadata.OnlineBeatmapSetID,
-            };
+                    Beatmaps = new List<BeatmapInfo>(),
+                    Hash = hash,
+                    Files = fileInfos,
+                    Metadata = metadata
+                };
+
 
             var mapNames = reader.Filenames.Where(f => f.EndsWith(".osu"));
 
@@ -517,14 +524,14 @@ namespace osu.Game.Beatmaps
                     raw.CopyTo(ms);
                     ms.Position = 0;
 
-                    var decoder = BeatmapDecoder.GetDecoder(sr);
+                    var decoder = Decoder.GetDecoder(sr);
-                    Beatmap beatmap = decoder.Decode(sr);
+                    Beatmap beatmap = decoder.DecodeBeatmap(sr);
 
                     beatmap.BeatmapInfo.Path = name;
                     beatmap.BeatmapInfo.Hash = ms.ComputeSHA2Hash();
                     beatmap.BeatmapInfo.MD5Hash = ms.ComputeMD5Hash();
 
-                    var existing = beatmaps.Beatmaps.FirstOrDefault(b => b.Hash == beatmap.BeatmapInfo.Hash || b.OnlineBeatmapID == beatmap.BeatmapInfo.OnlineBeatmapID);
+                    var existing = beatmaps.Beatmaps.FirstOrDefault(b => b.Hash == beatmap.BeatmapInfo.Hash || beatmap.BeatmapInfo.OnlineBeatmapID != null && b.OnlineBeatmapID == beatmap.BeatmapInfo.OnlineBeatmapID);
 
                     if (existing == null)
                     {
@@ -568,23 +575,11 @@ namespace osu.Game.Beatmaps
             {
                 try
                 {
-                    Beatmap beatmap;
-
-                    BeatmapDecoder decoder;
                     using (var stream = new StreamReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
                     {
-                        decoder = BeatmapDecoder.GetDecoder(stream);
+                        Decoder decoder = Decoder.GetDecoder(stream);
-                        beatmap = decoder.Decode(stream);
+                        return decoder.DecodeBeatmap(stream);
                     }
-
-                    if (beatmap == null || BeatmapSetInfo.StoryboardFile == null)
-                        return beatmap;
-
-                    using (var stream = new StreamReader(store.GetStream(getPathForFile(BeatmapSetInfo.StoryboardFile))))
-                        decoder.Decode(stream, beatmap);
-
-
-                    return beatmap;
                 }
                 catch
                 {
@@ -623,6 +618,28 @@ namespace osu.Game.Beatmaps
             }
 
             protected override Waveform GetWaveform() => new Waveform(store.GetStream(getPathForFile(Metadata.AudioFile)));
+
+            protected override Storyboard GetStoryboard()
+            {
+                if (BeatmapInfo?.Path == null && BeatmapSetInfo?.StoryboardFile == null)
+                    return new Storyboard();
+
+                try
+                {
+                    Decoder decoder;
+                    using (var stream = new StreamReader(store.GetStream(getPathForFile(BeatmapInfo?.Path))))
+                        decoder = Decoder.GetDecoder(stream);
+
+                    // try for .osb first and fall back to .osu
+                    string storyboardFile = BeatmapSetInfo.StoryboardFile ?? BeatmapInfo.Path;
+                    using (var stream = new StreamReader(store.GetStream(getPathForFile(storyboardFile))))
+                        return decoder.GetStoryboardDecoder().DecodeStoryboard(stream);
+                }
+                catch
+                {
+                    return new Storyboard();
+                }
+            }
         }
 
         /// <summary>

osu.Game/Beatmaps/Formats/BeatmapDecoder.cs

@@ -1,65 +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.IO;
-
-namespace osu.Game.Beatmaps.Formats
-{
-    public abstract class BeatmapDecoder
-    {
-        private static readonly Dictionary<string, Type> decoders = new Dictionary<string, Type>();
-
-        static BeatmapDecoder()
-        {
-            OsuLegacyDecoder.Register();
-        }
-
-        public static BeatmapDecoder GetDecoder(StreamReader stream)
-        {
-            if (stream == null)
-                throw new ArgumentNullException(nameof(stream));
-
-            string line;
-            do { line = stream.ReadLine()?.Trim(); }
-            while (line != null && line.Length == 0);
-
-            if (line == null || !decoders.ContainsKey(line))
-                throw new IOException(@"Unknown file format");
-            return (BeatmapDecoder)Activator.CreateInstance(decoders[line], line);
-        }
-
-        protected static void AddDecoder<T>(string magic) where T : BeatmapDecoder
-        {
-            decoders[magic] = typeof(T);
-        }
-
-        public virtual Beatmap Decode(StreamReader stream)
-        {
-            return ParseFile(stream);
-        }
-
-        public virtual void Decode(StreamReader stream, Beatmap beatmap)
-        {
-            ParseFile(stream, beatmap);
-        }
-
-        protected virtual Beatmap ParseFile(StreamReader stream)
-        {
-            var beatmap = new Beatmap
-            {
-                BeatmapInfo = new BeatmapInfo
-                {
-                    Metadata = new BeatmapMetadata(),
-                    BaseDifficulty = new BeatmapDifficulty(),
-                },
-            };
-
-            ParseFile(stream, beatmap);
-            return beatmap;
-        }
-
-        protected abstract void ParseFile(StreamReader stream, Beatmap beatmap);
-    }
-}

osu.Game/Beatmaps/Formats/Decoder.cs

@@ -0,0 +1,80 @@
+// 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.IO;
+using osu.Game.Storyboards;
+
+namespace osu.Game.Beatmaps.Formats
+{
+    public abstract class Decoder
+    {
+        private static readonly Dictionary<string, Type> decoders = new Dictionary<string, Type>();
+
+        static Decoder()
+        {
+            LegacyDecoder.Register();
+        }
+
+        /// <summary>
+        /// Retrieves a <see cref="Decoder"/> to parse a <see cref="Beatmap"/>.
+        /// </summary>
+        /// <param name="stream">A stream pointing to the <see cref="Beatmap"/>.</param>
+        public static Decoder GetDecoder(StreamReader stream)
+        {
+            if (stream == null)
+                throw new ArgumentNullException(nameof(stream));
+
+            string line;
+            do
+            { line = stream.ReadLine()?.Trim(); }
+            while (line != null && line.Length == 0);
+
+            if (line == null || !decoders.ContainsKey(line))
+                throw new IOException(@"Unknown file format");
+            return (Decoder)Activator.CreateInstance(decoders[line], line);
+        }
+
+        /// <summary>
+        /// Adds the <see cref="Decoder"/> to the list of <see cref="Beatmap"/> and <see cref="Storyboard"/> decoder.
+        /// </summary>
+        /// <typeparam name="T">Type to decode a <see cref="Beatmap"/> with.</typeparam>
+        /// <param name="version">A string representation of the version.</param>
+        protected static void AddDecoder<T>(string version) where T : Decoder
+        {
+            decoders[version] = typeof(T);
+        }
+
+        /// <summary>
+        /// Retrieves a <see cref="Decoder"/> to parse a <see cref="Storyboard"/>
+        /// </summary>
+        public abstract Decoder GetStoryboardDecoder();
+
+        public virtual Beatmap DecodeBeatmap(StreamReader stream)
+        {
+            var beatmap = new Beatmap
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    Metadata = new BeatmapMetadata(),
+                    BaseDifficulty = new BeatmapDifficulty(),
+                },
+            };
+
+            ParseBeatmap(stream, beatmap);
+            return beatmap;
+        }
+
+        protected abstract void ParseBeatmap(StreamReader stream, Beatmap beatmap);
+
+        public virtual Storyboard DecodeStoryboard(StreamReader stream)
+        {
+            var storyboard = new Storyboard();
+            ParseStoryboard(stream, storyboard);
+            return storyboard;
+        }
+
+        protected abstract void ParseStoryboard(StreamReader stream, Storyboard storyboard);
+    }
+}

osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs

@@ -0,0 +1,421 @@
+// 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.Globalization;
+using System.IO;
+using OpenTK.Graphics;
+using osu.Game.Beatmaps.Timing;
+using osu.Game.Rulesets.Objects.Legacy;
+using osu.Game.Beatmaps.ControlPoints;
+using System.Collections.Generic;
+
+namespace osu.Game.Beatmaps.Formats
+{
+    public class LegacyBeatmapDecoder : LegacyDecoder
+    {
+        private Beatmap beatmap;
+
+        private bool hasCustomColours;
+        private ConvertHitObjectParser parser;
+
+        private LegacySampleBank defaultSampleBank;
+        private int defaultSampleVolume = 100;
+
+        public LegacyBeatmapDecoder()
+        {
+        }
+
+        public LegacyBeatmapDecoder(string header)
+        {
+            BeatmapVersion = int.Parse(header.Substring(17));
+        }
+
+        protected override void ParseBeatmap(StreamReader stream, Beatmap beatmap)
+        {
+            if (stream == null)
+                throw new ArgumentNullException(nameof(stream));
+            if (beatmap == null)
+                throw new ArgumentNullException(nameof(beatmap));
+
+            this.beatmap = beatmap;
+            this.beatmap.BeatmapInfo.BeatmapVersion = BeatmapVersion;
+
+            ParseContent(stream);
+
+            foreach (var hitObject in this.beatmap.HitObjects)
+                hitObject.ApplyDefaults(this.beatmap.ControlPointInfo, this.beatmap.BeatmapInfo.BaseDifficulty);
+        }
+
+        protected override bool ShouldSkipLine(string line)
+        {
+            if (base.ShouldSkipLine(line) || line.StartsWith(" ") || line.StartsWith("_"))
+                return true;
+            return false;
+        }
+
+        protected override void ProcessSection(Section section, string line)
+        {
+            switch (section)
+            {
+                case Section.General:
+                    handleGeneral(line);
+                    break;
+                case Section.Editor:
+                    handleEditor(line);
+                    break;
+                case Section.Metadata:
+                    handleMetadata(line);
+                    break;
+                case Section.Difficulty:
+                    handleDifficulty(line);
+                    break;
+                case Section.Events:
+                    handleEvents(line);
+                    break;
+                case Section.TimingPoints:
+                    handleTimingPoints(line);
+                    break;
+                case Section.Colours:
+                    handleColours(line);
+                    break;
+                case Section.HitObjects:
+                    handleHitObjects(line);
+                    break;
+                case Section.Variables:
+                    handleVariables(line);
+                    break;
+            }
+        }
+
+        private void handleGeneral(string line)
+        {
+            var pair = splitKeyVal(line, ':');
+
+            var metadata = beatmap.BeatmapInfo.Metadata;
+            switch (pair.Key)
+            {
+                case @"AudioFilename":
+                    metadata.AudioFile = pair.Value;
+                    break;
+                case @"AudioLeadIn":
+                    beatmap.BeatmapInfo.AudioLeadIn = int.Parse(pair.Value);
+                    break;
+                case @"PreviewTime":
+                    metadata.PreviewTime = int.Parse(pair.Value);
+                    break;
+                case @"Countdown":
+                    beatmap.BeatmapInfo.Countdown = int.Parse(pair.Value) == 1;
+                    break;
+                case @"SampleSet":
+                    defaultSampleBank = (LegacySampleBank)Enum.Parse(typeof(LegacySampleBank), pair.Value);
+                    break;
+                case @"SampleVolume":
+                    defaultSampleVolume = int.Parse(pair.Value);
+                    break;
+                case @"StackLeniency":
+                    beatmap.BeatmapInfo.StackLeniency = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"Mode":
+                    beatmap.BeatmapInfo.RulesetID = int.Parse(pair.Value);
+
+                    switch (beatmap.BeatmapInfo.RulesetID)
+                    {
+                        case 0:
+                            parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
+                            break;
+                        case 1:
+                            parser = new Rulesets.Objects.Legacy.Taiko.ConvertHitObjectParser();
+                            break;
+                        case 2:
+                            parser = new Rulesets.Objects.Legacy.Catch.ConvertHitObjectParser();
+                            break;
+                        case 3:
+                            parser = new Rulesets.Objects.Legacy.Mania.ConvertHitObjectParser();
+                            break;
+                    }
+                    break;
+                case @"LetterboxInBreaks":
+                    beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(pair.Value) == 1;
+                    break;
+                case @"SpecialStyle":
+                    beatmap.BeatmapInfo.SpecialStyle = int.Parse(pair.Value) == 1;
+                    break;
+                case @"WidescreenStoryboard":
+                    beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(pair.Value) == 1;
+                    break;
+            }
+        }
+
+        private void handleEditor(string line)
+        {
+            var pair = splitKeyVal(line, ':');
+
+            switch (pair.Key)
+            {
+                case @"Bookmarks":
+                    beatmap.BeatmapInfo.StoredBookmarks = pair.Value;
+                    break;
+                case @"DistanceSpacing":
+                    beatmap.BeatmapInfo.DistanceSpacing = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"BeatDivisor":
+                    beatmap.BeatmapInfo.BeatDivisor = int.Parse(pair.Value);
+                    break;
+                case @"GridSize":
+                    beatmap.BeatmapInfo.GridSize = int.Parse(pair.Value);
+                    break;
+                case @"TimelineZoom":
+                    beatmap.BeatmapInfo.TimelineZoom = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+            }
+        }
+
+        private void handleMetadata(string line)
+        {
+            var pair = splitKeyVal(line, ':');
+
+            var metadata = beatmap.BeatmapInfo.Metadata;
+            switch (pair.Key)
+            {
+                case @"Title":
+                    metadata.Title = pair.Value;
+                    break;
+                case @"TitleUnicode":
+                    metadata.TitleUnicode = pair.Value;
+                    break;
+                case @"Artist":
+                    metadata.Artist = pair.Value;
+                    break;
+                case @"ArtistUnicode":
+                    metadata.ArtistUnicode = pair.Value;
+                    break;
+                case @"Creator":
+                    metadata.AuthorString = pair.Value;
+                    break;
+                case @"Version":
+                    beatmap.BeatmapInfo.Version = pair.Value;
+                    break;
+                case @"Source":
+                    beatmap.BeatmapInfo.Metadata.Source = pair.Value;
+                    break;
+                case @"Tags":
+                    beatmap.BeatmapInfo.Metadata.Tags = pair.Value;
+                    break;
+                case @"BeatmapID":
+                    beatmap.BeatmapInfo.OnlineBeatmapID = int.Parse(pair.Value);
+                    break;
+                case @"BeatmapSetID":
+                    beatmap.BeatmapInfo.OnlineBeatmapSetID = int.Parse(pair.Value);
+                    metadata.OnlineBeatmapSetID = int.Parse(pair.Value);
+                    break;
+            }
+        }
+
+        private void handleDifficulty(string line)
+        {
+            var pair = splitKeyVal(line, ':');
+
+            var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
+            switch (pair.Key)
+            {
+                case @"HPDrainRate":
+                    difficulty.DrainRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"CircleSize":
+                    difficulty.CircleSize = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"OverallDifficulty":
+                    difficulty.OverallDifficulty = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"ApproachRate":
+                    difficulty.ApproachRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"SliderMultiplier":
+                    difficulty.SliderMultiplier = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+                case @"SliderTickRate":
+                    difficulty.SliderTickRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
+                    break;
+            }
+        }
+
+        private void handleEvents(string line)
+        {
+            DecodeVariables(ref line);
+
+            string[] split = line.Split(',');
+
+            EventType type;
+            if (!Enum.TryParse(split[0], out type))
+                throw new InvalidDataException($@"Unknown event type {split[0]}");
+
+            switch (type)
+            {
+                case EventType.Background:
+                    string filename = split[2].Trim('"');
+                    beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
+                    break;
+                case EventType.Break:
+                    var breakEvent = new BreakPeriod
+                    {
+                        StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
+                        EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
+                    };
+
+                    if (!breakEvent.HasEffect)
+                        return;
+
+                    beatmap.Breaks.Add(breakEvent);
+                    break;
+            }
+        }
+
+        private void handleTimingPoints(string line)
+        {
+            string[] split = line.Split(',');
+
+            double time = double.Parse(split[0].Trim(), NumberFormatInfo.InvariantInfo);
+            double beatLength = double.Parse(split[1].Trim(), NumberFormatInfo.InvariantInfo);
+            double speedMultiplier = beatLength < 0 ? 100.0 / -beatLength : 1;
+
+            TimeSignatures timeSignature = TimeSignatures.SimpleQuadruple;
+            if (split.Length >= 3)
+                timeSignature = split[2][0] == '0' ? TimeSignatures.SimpleQuadruple : (TimeSignatures)int.Parse(split[2]);
+
+            LegacySampleBank sampleSet = defaultSampleBank;
+            if (split.Length >= 4)
+                sampleSet = (LegacySampleBank)int.Parse(split[3]);
+
+            //SampleBank sampleBank = SampleBank.Default;
+            //if (split.Length >= 5)
+            //    sampleBank = (SampleBank)int.Parse(split[4]);
+
+            int sampleVolume = defaultSampleVolume;
+            if (split.Length >= 6)
+                sampleVolume = int.Parse(split[5]);
+
+            bool timingChange = true;
+            if (split.Length >= 7)
+                timingChange = split[6][0] == '1';
+
+            bool kiaiMode = false;
+            bool omitFirstBarSignature = false;
+            if (split.Length >= 8)
+            {
+                int effectFlags = int.Parse(split[7]);
+                kiaiMode = (effectFlags & 1) > 0;
+                omitFirstBarSignature = (effectFlags & 8) > 0;
+            }
+
+            string stringSampleSet = sampleSet.ToString().ToLower();
+            if (stringSampleSet == @"none")
+                stringSampleSet = @"normal";
+
+            DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(time);
+            SoundControlPoint soundPoint = beatmap.ControlPointInfo.SoundPointAt(time);
+            EffectControlPoint effectPoint = beatmap.ControlPointInfo.EffectPointAt(time);
+
+            if (timingChange)
+            {
+                beatmap.ControlPointInfo.TimingPoints.Add(new TimingControlPoint
+                {
+                    Time = time,
+                    BeatLength = beatLength,
+                    TimeSignature = timeSignature
+                });
+            }
+
+            if (speedMultiplier != difficultyPoint.SpeedMultiplier)
+            {
+                beatmap.ControlPointInfo.DifficultyPoints.RemoveAll(x => x.Time == time);
+                beatmap.ControlPointInfo.DifficultyPoints.Add(new DifficultyControlPoint
+                {
+                    Time = time,
+                    SpeedMultiplier = speedMultiplier
+                });
+            }
+
+            if (stringSampleSet != soundPoint.SampleBank || sampleVolume != soundPoint.SampleVolume)
+            {
+                beatmap.ControlPointInfo.SoundPoints.Add(new SoundControlPoint
+                {
+                    Time = time,
+                    SampleBank = stringSampleSet,
+                    SampleVolume = sampleVolume
+                });
+            }
+
+            if (kiaiMode != effectPoint.KiaiMode || omitFirstBarSignature != effectPoint.OmitFirstBarLine)
+            {
+                beatmap.ControlPointInfo.EffectPoints.Add(new EffectControlPoint
+                {
+                    Time = time,
+                    KiaiMode = kiaiMode,
+                    OmitFirstBarLine = omitFirstBarSignature
+                });
+            }
+        }
+
+        private void handleColours(string line)
+        {
+            var pair = splitKeyVal(line, ':');
+
+            string[] split = pair.Value.Split(',');
+
+            if (split.Length != 3)
+                throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B): {pair.Value}");
+
+            byte r, g, b;
+            if (!byte.TryParse(split[0], out r) || !byte.TryParse(split[1], out g) || !byte.TryParse(split[2], out b))
+                throw new InvalidOperationException(@"Color must be specified with 8-bit integer components");
+
+            if (!hasCustomColours)
+            {
+                beatmap.ComboColors.Clear();
+                hasCustomColours = true;
+            }
+
+            // Note: the combo index specified in the beatmap is discarded
+            if (pair.Key.StartsWith(@"Combo"))
+            {
+                beatmap.ComboColors.Add(new Color4
+                {
+                    R = r / 255f,
+                    G = g / 255f,
+                    B = b / 255f,
+                    A = 1f,
+                });
+            }
+        }
+
+        private void handleHitObjects(string line)
+        {
+            // If the ruleset wasn't specified, assume the osu!standard ruleset.
+            if (parser == null)
+                parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
+
+            var obj = parser.Parse(line);
+
+            if (obj != null)
+                beatmap.HitObjects.Add(obj);
+        }
+
+        private void handleVariables(string line)
+        {
+            var pair = splitKeyVal(line, '=');
+            Variables[pair.Key] = pair.Value;
+        }
+
+        private KeyValuePair<string, string> splitKeyVal(string line, char separator)
+        {
+            var split = line.Trim().Split(new[] { separator }, 2);
+
+            return new KeyValuePair<string, string>
+            (
+                split[0].Trim(),
+                split.Length > 1 ? split[1].Trim() : string.Empty
+            );
+        }
+    }
+}

osu.Game/Beatmaps/Formats/LegacyDecoder.cs

@@ -0,0 +1,163 @@
+// 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.IO;
+using osu.Game.Beatmaps.Legacy;
+using osu.Game.Storyboards;
+
+namespace osu.Game.Beatmaps.Formats
+{
+    public abstract class LegacyDecoder : Decoder
+    {
+        public static void Register()
+        {
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v14");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v13");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v12");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v11");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v10");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v9");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v8");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v7");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v6");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v5");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v4");
+            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v3");
+            // TODO: differences between versions
+        }
+
+        protected int BeatmapVersion;
+        protected readonly Dictionary<string, string> Variables = new Dictionary<string, string>();
+
+        public override Decoder GetStoryboardDecoder() => new LegacyStoryboardDecoder(BeatmapVersion);
+
+        public override Beatmap DecodeBeatmap(StreamReader stream) => new LegacyBeatmap(base.DecodeBeatmap(stream));
+
+        protected override void ParseBeatmap(StreamReader stream, Beatmap beatmap)
+        {
+            throw new NotImplementedException();
+        }
+
+        protected override void ParseStoryboard(StreamReader stream, Storyboard storyboard)
+        {
+            throw new NotImplementedException();
+        }
+
+        protected void ParseContent(StreamReader stream)
+        {
+            Section section = Section.None;
+
+            string line;
+            while ((line = stream.ReadLine()) != null)
+            {
+                if (ShouldSkipLine(line))
+                    continue;
+
+                // It's already set in ParseBeatmap... why do it again?
+                //if (line.StartsWith(@"osu file format v"))
+                //{
+                //    Beatmap.BeatmapInfo.BeatmapVersion = int.Parse(line.Substring(17));
+                //    continue;
+                //}
+
+                if (line.StartsWith(@"[") && line.EndsWith(@"]"))
+                {
+                    if (!Enum.TryParse(line.Substring(1, line.Length - 2), out section))
+                        throw new InvalidDataException($@"Unknown osu section {line}");
+                    continue;
+                }
+
+                ProcessSection(section, line);
+            }
+        }
+
+        protected virtual bool ShouldSkipLine(string line)
+        {
+            if (string.IsNullOrWhiteSpace(line) || line.StartsWith("//"))
+                return true;
+            return false;
+        }
+
+        protected abstract void ProcessSection(Section section, string line);
+
+        /// <summary>
+        /// Decodes any beatmap variables present in a line into their real values.
+        /// </summary>
+        /// <param name="line">The line which may contains variables.</param>
+        protected void DecodeVariables(ref string line)
+        {
+            while (line.IndexOf('$') >= 0)
+            {
+                string origLine = line;
+                string[] split = line.Split(',');
+                for (int i = 0; i < split.Length; i++)
+                {
+                    var item = split[i];
+                    if (item.StartsWith("$") && Variables.ContainsKey(item))
+                        split[i] = Variables[item];
+                }
+
+                line = string.Join(",", split);
+                if (line == origLine)
+                    break;
+            }
+        }
+
+        protected enum Section
+        {
+            None,
+            General,
+            Editor,
+            Metadata,
+            Difficulty,
+            Events,
+            TimingPoints,
+            Colours,
+            HitObjects,
+            Variables,
+        }
+
+        internal enum LegacySampleBank
+        {
+            None = 0,
+            Normal = 1,
+            Soft = 2,
+            Drum = 3
+        }
+
+        internal enum EventType
+        {
+            Background = 0,
+            Video = 1,
+            Break = 2,
+            Colour = 3,
+            Sprite = 4,
+            Sample = 5,
+            Animation = 6
+        }
+
+        internal enum LegacyOrigins
+        {
+            TopLeft,
+            Centre,
+            CentreLeft,
+            TopRight,
+            BottomCentre,
+            TopCentre,
+            Custom,
+            CentreRight,
+            BottomLeft,
+            BottomRight
+        };
+
+        internal enum StoryLayer
+        {
+            Background = 0,
+            Fail = 1,
+            Pass = 2,
+            Foreground = 3
+        }
+    }
+}

osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs

@@ -0,0 +1,271 @@
+// 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.Globalization;
+using System.IO;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Graphics;
+using osu.Framework.IO.File;
+using osu.Game.Storyboards;
+
+namespace osu.Game.Beatmaps.Formats
+{
+    public class LegacyStoryboardDecoder : LegacyDecoder
+    {
+        private Storyboard storyboard;
+
+        private StoryboardSprite storyboardSprite;
+        private CommandTimelineGroup timelineGroup;
+
+        public LegacyStoryboardDecoder()
+        {
+        }
+
+        public LegacyStoryboardDecoder(int beatmapVersion)
+        {
+            BeatmapVersion = beatmapVersion;
+        }
+
+        protected override void ParseStoryboard(StreamReader stream, Storyboard storyboard)
+        {
+            if (stream == null)
+                throw new ArgumentNullException(nameof(stream));
+            if (storyboard == null)
+                throw new ArgumentNullException(nameof(storyboard));
+
+            this.storyboard = storyboard;
+
+            ParseContent(stream);
+        }
+
+        protected override void ProcessSection(Section section, string line)
+        {
+            switch (section)
+            {
+                case Section.Events:
+                    handleEvents(line);
+                    break;
+            }
+        }
+
+        private void handleEvents(string line)
+        {
+            var depth = 0;
+            while (line.StartsWith(" ") || line.StartsWith("_"))
+            {
+                ++depth;
+                line = line.Substring(1);
+            }
+
+            DecodeVariables(ref line);
+
+            string[] split = line.Split(',');
+
+            if (depth == 0)
+            {
+                storyboardSprite = null;
+
+                EventType type;
+                if (!Enum.TryParse(split[0], out type))
+                    throw new InvalidDataException($@"Unknown event type {split[0]}");
+
+                switch (type)
+                {
+                    case EventType.Sprite:
+                        {
+                            var layer = parseLayer(split[1]);
+                            var origin = parseOrigin(split[2]);
+                            var path = cleanFilename(split[3]);
+                            var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
+                            var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
+                            storyboardSprite = new StoryboardSprite(path, origin, new Vector2(x, y));
+                            storyboard.GetLayer(layer).Add(storyboardSprite);
+                        }
+                        break;
+                    case EventType.Animation:
+                        {
+                            var layer = parseLayer(split[1]);
+                            var origin = parseOrigin(split[2]);
+                            var path = cleanFilename(split[3]);
+                            var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
+                            var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
+                            var frameCount = int.Parse(split[6]);
+                            var frameDelay = double.Parse(split[7], NumberFormatInfo.InvariantInfo);
+                            var loopType = split.Length > 8 ? (AnimationLoopType)Enum.Parse(typeof(AnimationLoopType), split[8]) : AnimationLoopType.LoopForever;
+                            storyboardSprite = new StoryboardAnimation(path, origin, new Vector2(x, y), frameCount, frameDelay, loopType);
+                            storyboard.GetLayer(layer).Add(storyboardSprite);
+                        }
+                        break;
+                    case EventType.Sample:
+                        {
+                            var time = double.Parse(split[1], CultureInfo.InvariantCulture);
+                            var layer = parseLayer(split[2]);
+                            var path = cleanFilename(split[3]);
+                            var volume = split.Length > 4 ? float.Parse(split[4], CultureInfo.InvariantCulture) : 100;
+                            storyboard.GetLayer(layer).Add(new StoryboardSample(path, time, volume));
+                        }
+                        break;
+                }
+            }
+            else
+            {
+                if (depth < 2)
+                    timelineGroup = storyboardSprite?.TimelineGroup;
+
+                var commandType = split[0];
+                switch (commandType)
+                {
+                    case "T":
+                        {
+                            var triggerName = split[1];
+                            var startTime = split.Length > 2 ? double.Parse(split[2], CultureInfo.InvariantCulture) : double.MinValue;
+                            var endTime = split.Length > 3 ? double.Parse(split[3], CultureInfo.InvariantCulture) : double.MaxValue;
+                            var groupNumber = split.Length > 4 ? int.Parse(split[4]) : 0;
+                            timelineGroup = storyboardSprite?.AddTrigger(triggerName, startTime, endTime, groupNumber);
+                        }
+                        break;
+                    case "L":
+                        {
+                            var startTime = double.Parse(split[1], CultureInfo.InvariantCulture);
+                            var loopCount = int.Parse(split[2]);
+                            timelineGroup = storyboardSprite?.AddLoop(startTime, loopCount);
+                        }
+                        break;
+                    default:
+                        {
+                            if (string.IsNullOrEmpty(split[3]))
+                                split[3] = split[2];
+
+                            var easing = (Easing)int.Parse(split[1]);
+                            var startTime = double.Parse(split[2], CultureInfo.InvariantCulture);
+                            var endTime = double.Parse(split[3], CultureInfo.InvariantCulture);
+
+                            switch (commandType)
+                            {
+                                case "F":
+                                    {
+                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
+                                        timelineGroup?.Alpha.Add(easing, startTime, endTime, startValue, endValue);
+                                    }
+                                    break;
+                                case "S":
+                                    {
+                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
+                                        timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startValue), new Vector2(endValue));
+                                    }
+                                    break;
+                                case "V":
+                                    {
+                                        var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
+                                        var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
+                                        var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
+                                        timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startX, startY), new Vector2(endX, endY));
+                                    }
+                                    break;
+                                case "R":
+                                    {
+                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
+                                        timelineGroup?.Rotation.Add(easing, startTime, endTime, MathHelper.RadiansToDegrees(startValue), MathHelper.RadiansToDegrees(endValue));
+                                    }
+                                    break;
+                                case "M":
+                                    {
+                                        var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
+                                        var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
+                                        var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
+                                        timelineGroup?.X.Add(easing, startTime, endTime, startX, endX);
+                                        timelineGroup?.Y.Add(easing, startTime, endTime, startY, endY);
+                                    }
+                                    break;
+                                case "MX":
+                                    {
+                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
+                                        timelineGroup?.X.Add(easing, startTime, endTime, startValue, endValue);
+                                    }
+                                    break;
+                                case "MY":
+                                    {
+                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
+                                        timelineGroup?.Y.Add(easing, startTime, endTime, startValue, endValue);
+                                    }
+                                    break;
+                                case "C":
+                                    {
+                                        var startRed = float.Parse(split[4], CultureInfo.InvariantCulture);
+                                        var startGreen = float.Parse(split[5], CultureInfo.InvariantCulture);
+                                        var startBlue = float.Parse(split[6], CultureInfo.InvariantCulture);
+                                        var endRed = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startRed;
+                                        var endGreen = split.Length > 8 ? float.Parse(split[8], CultureInfo.InvariantCulture) : startGreen;
+                                        var endBlue = split.Length > 9 ? float.Parse(split[9], CultureInfo.InvariantCulture) : startBlue;
+                                        timelineGroup?.Colour.Add(easing, startTime, endTime,
+                                            new Color4(startRed / 255f, startGreen / 255f, startBlue / 255f, 1),
+                                            new Color4(endRed / 255f, endGreen / 255f, endBlue / 255f, 1));
+                                    }
+                                    break;
+                                case "P":
+                                    {
+                                        var type = split[4];
+                                        switch (type)
+                                        {
+                                            case "A":
+                                                timelineGroup?.BlendingMode.Add(easing, startTime, endTime, BlendingMode.Additive, startTime == endTime ? BlendingMode.Additive : BlendingMode.Inherit);
+                                                break;
+                                            case "H":
+                                                timelineGroup?.FlipH.Add(easing, startTime, endTime, true, startTime == endTime);
+                                                break;
+                                            case "V":
+                                                timelineGroup?.FlipV.Add(easing, startTime, endTime, true, startTime == endTime);
+                                                break;
+                                        }
+                                    }
+                                    break;
+                                default:
+                                    throw new InvalidDataException($@"Unknown command type: {commandType}");
+                            }
+                        }
+                        break;
+                }
+            }
+        }
+
+        private string parseLayer(string value) => Enum.Parse(typeof(StoryLayer), value).ToString();
+
+        private Anchor parseOrigin(string value)
+        {
+            var origin = (LegacyOrigins)Enum.Parse(typeof(LegacyOrigins), value);
+            switch (origin)
+            {
+                case LegacyOrigins.TopLeft:
+                    return Anchor.TopLeft;
+                case LegacyOrigins.TopCentre:
+                    return Anchor.TopCentre;
+                case LegacyOrigins.TopRight:
+                    return Anchor.TopRight;
+                case LegacyOrigins.CentreLeft:
+                    return Anchor.CentreLeft;
+                case LegacyOrigins.Centre:
+                    return Anchor.Centre;
+                case LegacyOrigins.CentreRight:
+                    return Anchor.CentreRight;
+                case LegacyOrigins.BottomLeft:
+                    return Anchor.BottomLeft;
+                case LegacyOrigins.BottomCentre:
+                    return Anchor.BottomCentre;
+                case LegacyOrigins.BottomRight:
+                    return Anchor.BottomRight;
+            }
+            throw new InvalidDataException($@"Unknown origin: {value}");
+        }
+
+        private string cleanFilename(string path) => FileSafety.PathStandardise(path.Trim('\"'));
+    }
+}

osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs

@@ -1,781 +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.Globalization;
-using System.IO;
-using OpenTK.Graphics;
-using osu.Game.Beatmaps.Timing;
-using osu.Game.Beatmaps.Legacy;
-using osu.Game.Rulesets.Objects.Legacy;
-using osu.Game.Beatmaps.ControlPoints;
-using osu.Game.Storyboards;
-using OpenTK;
-using osu.Framework.Graphics;
-using osu.Framework.IO.File;
-
-namespace osu.Game.Beatmaps.Formats
-{
-    public class OsuLegacyDecoder : BeatmapDecoder
-    {
-        public static void Register()
-        {
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v14");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v13");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v12");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v11");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v10");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v9");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v8");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v7");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v6");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v5");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v4");
-            AddDecoder<OsuLegacyDecoder>(@"osu file format v3");
-            // TODO: differences between versions
-        }
-
-        private ConvertHitObjectParser parser;
-
-        private readonly Dictionary<string, string> variables = new Dictionary<string, string>();
-
-        private LegacySampleBank defaultSampleBank;
-        private int defaultSampleVolume = 100;
-
-        private readonly int beatmapVersion;
-
-        public OsuLegacyDecoder()
-        {
-        }
-
-        public OsuLegacyDecoder(string header)
-        {
-            beatmapVersion = int.Parse(header.Substring(17));
-        }
-
-        private enum Section
-        {
-            None,
-            General,
-            Editor,
-            Metadata,
-            Difficulty,
-            Events,
-            TimingPoints,
-            Colours,
-            HitObjects,
-            Variables,
-        }
-
-        private void handleGeneral(Beatmap beatmap, string line)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, ':');
-
-            var metadata = beatmap.BeatmapInfo.Metadata;
-            switch (pair.Key)
-            {
-                case @"AudioFilename":
-                    metadata.AudioFile = pair.Value;
-                    break;
-                case @"AudioLeadIn":
-                    beatmap.BeatmapInfo.AudioLeadIn = int.Parse(pair.Value);
-                    break;
-                case @"PreviewTime":
-                    metadata.PreviewTime = int.Parse(pair.Value);
-                    break;
-                case @"Countdown":
-                    beatmap.BeatmapInfo.Countdown = int.Parse(pair.Value) == 1;
-                    break;
-                case @"SampleSet":
-                    defaultSampleBank = (LegacySampleBank)Enum.Parse(typeof(LegacySampleBank), pair.Value);
-                    break;
-                case @"SampleVolume":
-                    defaultSampleVolume = int.Parse(pair.Value);
-                    break;
-                case @"StackLeniency":
-                    beatmap.BeatmapInfo.StackLeniency = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"Mode":
-                    beatmap.BeatmapInfo.RulesetID = int.Parse(pair.Value);
-
-                    switch (beatmap.BeatmapInfo.RulesetID)
-                    {
-                        case 0:
-                            parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
-                            break;
-                        case 1:
-                            parser = new Rulesets.Objects.Legacy.Taiko.ConvertHitObjectParser();
-                            break;
-                        case 2:
-                            parser = new Rulesets.Objects.Legacy.Catch.ConvertHitObjectParser();
-                            break;
-                        case 3:
-                            parser = new Rulesets.Objects.Legacy.Mania.ConvertHitObjectParser();
-                            break;
-                    }
-                    break;
-                case @"LetterboxInBreaks":
-                    beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(pair.Value) == 1;
-                    break;
-                case @"SpecialStyle":
-                    beatmap.BeatmapInfo.SpecialStyle = int.Parse(pair.Value) == 1;
-                    break;
-                case @"WidescreenStoryboard":
-                    beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(pair.Value) == 1;
-                    break;
-            }
-        }
-
-        private void handleEditor(Beatmap beatmap, string line)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, ':');
-
-            switch (pair.Key)
-            {
-                case @"Bookmarks":
-                    beatmap.BeatmapInfo.StoredBookmarks = pair.Value;
-                    break;
-                case @"DistanceSpacing":
-                    beatmap.BeatmapInfo.DistanceSpacing = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"BeatDivisor":
-                    beatmap.BeatmapInfo.BeatDivisor = int.Parse(pair.Value);
-                    break;
-                case @"GridSize":
-                    beatmap.BeatmapInfo.GridSize = int.Parse(pair.Value);
-                    break;
-                case @"TimelineZoom":
-                    beatmap.BeatmapInfo.TimelineZoom = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-            }
-        }
-
-        private void handleMetadata(Beatmap beatmap, string line)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, ':');
-
-            var metadata = beatmap.BeatmapInfo.Metadata;
-            switch (pair.Key)
-            {
-                case @"Title":
-                    metadata.Title = pair.Value;
-                    break;
-                case @"TitleUnicode":
-                    metadata.TitleUnicode = pair.Value;
-                    break;
-                case @"Artist":
-                    metadata.Artist = pair.Value;
-                    break;
-                case @"ArtistUnicode":
-                    metadata.ArtistUnicode = pair.Value;
-                    break;
-                case @"Creator":
-                    metadata.AuthorString = pair.Value;
-                    break;
-                case @"Version":
-                    beatmap.BeatmapInfo.Version = pair.Value;
-                    break;
-                case @"Source":
-                    beatmap.BeatmapInfo.Metadata.Source = pair.Value;
-                    break;
-                case @"Tags":
-                    beatmap.BeatmapInfo.Metadata.Tags = pair.Value;
-                    break;
-                case @"BeatmapID":
-                    beatmap.BeatmapInfo.OnlineBeatmapID = int.Parse(pair.Value);
-                    break;
-                case @"BeatmapSetID":
-                    beatmap.BeatmapInfo.OnlineBeatmapSetID = int.Parse(pair.Value);
-                    metadata.OnlineBeatmapSetID = int.Parse(pair.Value);
-                    break;
-            }
-        }
-
-        private void handleDifficulty(Beatmap beatmap, string line)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, ':');
-
-            var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
-            switch (pair.Key)
-            {
-                case @"HPDrainRate":
-                    difficulty.DrainRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"CircleSize":
-                    difficulty.CircleSize = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"OverallDifficulty":
-                    difficulty.OverallDifficulty = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"ApproachRate":
-                    difficulty.ApproachRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"SliderMultiplier":
-                    difficulty.SliderMultiplier = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-                case @"SliderTickRate":
-                    difficulty.SliderTickRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
-                    break;
-            }
-        }
-
-        /// <summary>
-        /// Decodes any beatmap variables present in a line into their real values.
-        /// </summary>
-        /// <param name="line">The line which may contains variables.</param>
-        private void decodeVariables(ref string line)
-        {
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            while (line.IndexOf('$') >= 0)
-            {
-                string origLine = line;
-                string[] split = line.Split(',');
-                for (int i = 0; i < split.Length; i++)
-                {
-                    var item = split[i];
-                    if (item.StartsWith("$") && variables.ContainsKey(item))
-                        split[i] = variables[item];
-                }
-
-                line = string.Join(",", split);
-                if (line == origLine) break;
-            }
-        }
-
-        private void handleEvents(Beatmap beatmap, string line, ref StoryboardSprite storyboardSprite, ref CommandTimelineGroup timelineGroup)
-        {
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-
-            var depth = 0;
-            while (line.StartsWith(" ") || line.StartsWith("_"))
-            {
-                ++depth;
-                line = line.Substring(1);
-            }
-
-            decodeVariables(ref line);
-
-            string[] split = line.Split(',');
-
-            if (depth == 0)
-            {
-                storyboardSprite = null;
-
-                EventType type;
-                if (!Enum.TryParse(split[0], out type))
-                    throw new InvalidDataException($@"Unknown event type {split[0]}");
-
-                switch (type)
-                {
-                    case EventType.Video:
-                    case EventType.Background:
-                        string filename = split[2].Trim('"');
-
-                        if (type == EventType.Background)
-                            beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
-
-                        break;
-                    case EventType.Break:
-                        var breakEvent = new BreakPeriod
-                        {
-                            StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
-                            EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
-                        };
-
-                        if (!breakEvent.HasEffect)
-                            return;
-
-                        beatmap.Breaks.Add(breakEvent);
-                        break;
-                    case EventType.Sprite:
-                        {
-                            var layer = parseLayer(split[1]);
-                            var origin = parseOrigin(split[2]);
-                            var path = cleanFilename(split[3]);
-                            var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
-                            var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
-                            storyboardSprite = new StoryboardSprite(path, origin, new Vector2(x, y));
-                            beatmap.Storyboard.GetLayer(layer).Add(storyboardSprite);
-                        }
-                        break;
-                    case EventType.Animation:
-                        {
-                            var layer = parseLayer(split[1]);
-                            var origin = parseOrigin(split[2]);
-                            var path = cleanFilename(split[3]);
-                            var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
-                            var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
-                            var frameCount = int.Parse(split[6]);
-                            var frameDelay = double.Parse(split[7], NumberFormatInfo.InvariantInfo);
-                            var loopType = split.Length > 8 ? (AnimationLoopType)Enum.Parse(typeof(AnimationLoopType), split[8]) : AnimationLoopType.LoopForever;
-                            storyboardSprite = new StoryboardAnimation(path, origin, new Vector2(x, y), frameCount, frameDelay, loopType);
-                            beatmap.Storyboard.GetLayer(layer).Add(storyboardSprite);
-                        }
-                        break;
-                    case EventType.Sample:
-                        {
-                            var time = double.Parse(split[1], CultureInfo.InvariantCulture);
-                            var layer = parseLayer(split[2]);
-                            var path = cleanFilename(split[3]);
-                            var volume = split.Length > 4 ? float.Parse(split[4], CultureInfo.InvariantCulture) : 100;
-                            beatmap.Storyboard.GetLayer(layer).Add(new StoryboardSample(path, time, volume));
-                        }
-                        break;
-                }
-            }
-            else
-            {
-                if (depth < 2)
-                    timelineGroup = storyboardSprite?.TimelineGroup;
-
-                var commandType = split[0];
-                switch (commandType)
-                {
-                    case "T":
-                        {
-                            var triggerName = split[1];
-                            var startTime = split.Length > 2 ? double.Parse(split[2], CultureInfo.InvariantCulture) : double.MinValue;
-                            var endTime = split.Length > 3 ? double.Parse(split[3], CultureInfo.InvariantCulture) : double.MaxValue;
-                            var groupNumber = split.Length > 4 ? int.Parse(split[4]) : 0;
-                            timelineGroup = storyboardSprite?.AddTrigger(triggerName, startTime, endTime, groupNumber);
-                        }
-                        break;
-                    case "L":
-                        {
-                            var startTime = double.Parse(split[1], CultureInfo.InvariantCulture);
-                            var loopCount = int.Parse(split[2]);
-                            timelineGroup = storyboardSprite?.AddLoop(startTime, loopCount);
-                        }
-                        break;
-                    default:
-                        {
-                            if (string.IsNullOrEmpty(split[3]))
-                                split[3] = split[2];
-
-                            var easing = (Easing)int.Parse(split[1]);
-                            var startTime = double.Parse(split[2], CultureInfo.InvariantCulture);
-                            var endTime = double.Parse(split[3], CultureInfo.InvariantCulture);
-
-                            switch (commandType)
-                            {
-                                case "F":
-                                    {
-                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
-                                        timelineGroup?.Alpha.Add(easing, startTime, endTime, startValue, endValue);
-                                    }
-                                    break;
-                                case "S":
-                                    {
-                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
-                                        timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startValue), new Vector2(endValue));
-                                    }
-                                    break;
-                                case "V":
-                                    {
-                                        var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
-                                        var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
-                                        var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
-                                        timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startX, startY), new Vector2(endX, endY));
-                                    }
-                                    break;
-                                case "R":
-                                    {
-                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
-                                        timelineGroup?.Rotation.Add(easing, startTime, endTime, MathHelper.RadiansToDegrees(startValue), MathHelper.RadiansToDegrees(endValue));
-                                    }
-                                    break;
-                                case "M":
-                                    {
-                                        var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
-                                        var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
-                                        var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
-                                        timelineGroup?.X.Add(easing, startTime, endTime, startX, endX);
-                                        timelineGroup?.Y.Add(easing, startTime, endTime, startY, endY);
-                                    }
-                                    break;
-                                case "MX":
-                                    {
-                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
-                                        timelineGroup?.X.Add(easing, startTime, endTime, startValue, endValue);
-                                    }
-                                    break;
-                                case "MY":
-                                    {
-                                        var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
-                                        timelineGroup?.Y.Add(easing, startTime, endTime, startValue, endValue);
-                                    }
-                                    break;
-                                case "C":
-                                    {
-                                        var startRed = float.Parse(split[4], CultureInfo.InvariantCulture);
-                                        var startGreen = float.Parse(split[5], CultureInfo.InvariantCulture);
-                                        var startBlue = float.Parse(split[6], CultureInfo.InvariantCulture);
-                                        var endRed = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startRed;
-                                        var endGreen = split.Length > 8 ? float.Parse(split[8], CultureInfo.InvariantCulture) : startGreen;
-                                        var endBlue = split.Length > 9 ? float.Parse(split[9], CultureInfo.InvariantCulture) : startBlue;
-                                        timelineGroup?.Colour.Add(easing, startTime, endTime,
-                                            new Color4(startRed / 255f, startGreen / 255f, startBlue / 255f, 1),
-                                            new Color4(endRed / 255f, endGreen / 255f, endBlue / 255f, 1));
-                                    }
-                                    break;
-                                case "P":
-                                    {
-                                        var type = split[4];
-                                        switch (type)
-                                        {
-                                            case "A": timelineGroup?.BlendingMode.Add(easing, startTime, endTime, BlendingMode.Additive, startTime == endTime ? BlendingMode.Additive : BlendingMode.Inherit); break;
-                                            case "H": timelineGroup?.FlipH.Add(easing, startTime, endTime, true, startTime == endTime); break;
-                                            case "V": timelineGroup?.FlipV.Add(easing, startTime, endTime, true, startTime == endTime); break;
-                                        }
-                                    }
-                                    break;
-                                default:
-                                    throw new InvalidDataException($@"Unknown command type: {commandType}");
-                            }
-                        }
-                        break;
-                }
-            }
-        }
-
-        private static string cleanFilename(string path)
-            => FileSafety.PathStandardise(path.Trim('\"'));
-
-        private static Anchor parseOrigin(string value)
-        {
-            var origin = (LegacyOrigins)Enum.Parse(typeof(LegacyOrigins), value);
-            switch (origin)
-            {
-                case LegacyOrigins.TopLeft: return Anchor.TopLeft;
-                case LegacyOrigins.TopCentre: return Anchor.TopCentre;
-                case LegacyOrigins.TopRight: return Anchor.TopRight;
-                case LegacyOrigins.CentreLeft: return Anchor.CentreLeft;
-                case LegacyOrigins.Centre: return Anchor.Centre;
-                case LegacyOrigins.CentreRight: return Anchor.CentreRight;
-                case LegacyOrigins.BottomLeft: return Anchor.BottomLeft;
-                case LegacyOrigins.BottomCentre: return Anchor.BottomCentre;
-                case LegacyOrigins.BottomRight: return Anchor.BottomRight;
-            }
-            throw new InvalidDataException($@"Unknown origin: {value}");
-        }
-
-        private static string parseLayer(string value)
-            => Enum.Parse(typeof(StoryLayer), value).ToString();
-
-        private void handleTimingPoints(Beatmap beatmap, string line)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            string[] split = line.Split(',');
-
-            double time = double.Parse(split[0].Trim(), NumberFormatInfo.InvariantInfo);
-            double beatLength = double.Parse(split[1].Trim(), NumberFormatInfo.InvariantInfo);
-            double speedMultiplier = beatLength < 0 ? 100.0 / -beatLength : 1;
-
-            TimeSignatures timeSignature = TimeSignatures.SimpleQuadruple;
-            if (split.Length >= 3)
-                timeSignature = split[2][0] == '0' ? TimeSignatures.SimpleQuadruple : (TimeSignatures)int.Parse(split[2]);
-
-            LegacySampleBank sampleSet = defaultSampleBank;
-            if (split.Length >= 4)
-                sampleSet = (LegacySampleBank)int.Parse(split[3]);
-
-            //SampleBank sampleBank = SampleBank.Default;
-            //if (split.Length >= 5)
-            //    sampleBank = (SampleBank)int.Parse(split[4]);
-
-            int sampleVolume = defaultSampleVolume;
-            if (split.Length >= 6)
-                sampleVolume = int.Parse(split[5]);
-
-            bool timingChange = true;
-            if (split.Length >= 7)
-                timingChange = split[6][0] == '1';
-
-            bool kiaiMode = false;
-            bool omitFirstBarSignature = false;
-            if (split.Length >= 8)
-            {
-                int effectFlags = int.Parse(split[7]);
-                kiaiMode = (effectFlags & 1) > 0;
-                omitFirstBarSignature = (effectFlags & 8) > 0;
-            }
-
-            string stringSampleSet = sampleSet.ToString().ToLower();
-            if (stringSampleSet == @"none")
-                stringSampleSet = @"normal";
-
-            DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(time);
-            SoundControlPoint soundPoint = beatmap.ControlPointInfo.SoundPointAt(time);
-            EffectControlPoint effectPoint = beatmap.ControlPointInfo.EffectPointAt(time);
-
-            if (timingChange)
-            {
-                beatmap.ControlPointInfo.TimingPoints.Add(new TimingControlPoint
-                {
-                    Time = time,
-                    BeatLength = beatLength,
-                    TimeSignature = timeSignature
-                });
-            }
-
-            if (speedMultiplier != difficultyPoint.SpeedMultiplier)
-            {
-                beatmap.ControlPointInfo.DifficultyPoints.RemoveAll(x => x.Time == time);
-                beatmap.ControlPointInfo.DifficultyPoints.Add(new DifficultyControlPoint
-                {
-                    Time = time,
-                    SpeedMultiplier = speedMultiplier
-                });
-            }
-
-            if (stringSampleSet != soundPoint.SampleBank || sampleVolume != soundPoint.SampleVolume)
-            {
-                beatmap.ControlPointInfo.SoundPoints.Add(new SoundControlPoint
-                {
-                    Time = time,
-                    SampleBank = stringSampleSet,
-                    SampleVolume = sampleVolume
-                });
-            }
-
-            if (kiaiMode != effectPoint.KiaiMode || omitFirstBarSignature != effectPoint.OmitFirstBarLine)
-            {
-                beatmap.ControlPointInfo.EffectPoints.Add(new EffectControlPoint
-                {
-                    Time = time,
-                    KiaiMode = kiaiMode,
-                    OmitFirstBarLine = omitFirstBarSignature
-                });
-            }
-        }
-
-        private void handleColours(Beatmap beatmap, string line, ref bool hasCustomColours)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, ':');
-
-            string[] split = pair.Value.Split(',');
-
-            if (split.Length != 3)
-                throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B): {pair.Value}");
-
-            byte r, g, b;
-            if (!byte.TryParse(split[0], out r) || !byte.TryParse(split[1], out g) || !byte.TryParse(split[2], out b))
-                throw new InvalidOperationException(@"Color must be specified with 8-bit integer components");
-
-            if (!hasCustomColours)
-            {
-                beatmap.ComboColors.Clear();
-                hasCustomColours = true;
-            }
-
-            // Note: the combo index specified in the beatmap is discarded
-            if (pair.Key.StartsWith(@"Combo"))
-            {
-                beatmap.ComboColors.Add(new Color4
-                {
-                    R = r / 255f,
-                    G = g / 255f,
-                    B = b / 255f,
-                    A = 1f,
-                });
-            }
-        }
-
-        private void handleVariables(string line)
-        {
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var pair = splitKeyVal(line, '=');
-            variables[pair.Key] = pair.Value;
-        }
-
-        protected override Beatmap ParseFile(StreamReader stream)
-        {
-            return new LegacyBeatmap(base.ParseFile(stream));
-        }
-
-        public override Beatmap Decode(StreamReader stream)
-        {
-            return new LegacyBeatmap(base.Decode(stream));
-        }
-
-        protected override void ParseFile(StreamReader stream, Beatmap beatmap)
-        {
-            if (beatmap == null)
-                throw new ArgumentNullException(nameof(beatmap));
-            if (stream == null)
-                throw new ArgumentNullException(nameof(stream));
-
-            beatmap.BeatmapInfo.BeatmapVersion = beatmapVersion;
-
-            Section section = Section.None;
-            bool hasCustomColours = false;
-            StoryboardSprite storyboardSprite = null;
-            CommandTimelineGroup timelineGroup = null;
-
-            string line;
-            while ((line = stream.ReadLine()) != null)
-            {
-                if (string.IsNullOrWhiteSpace(line))
-                    continue;
-
-                if (line.StartsWith("//"))
-                    continue;
-
-                if (line.StartsWith(@"osu file format v"))
-                {
-                    beatmap.BeatmapInfo.BeatmapVersion = int.Parse(line.Substring(17));
-                    continue;
-                }
-
-                if (line.StartsWith(@"[") && line.EndsWith(@"]"))
-                {
-                    if (!Enum.TryParse(line.Substring(1, line.Length - 2), out section))
-                        throw new InvalidDataException($@"Unknown osu section {line}");
-                    continue;
-                }
-
-                switch (section)
-                {
-                    case Section.General:
-                        handleGeneral(beatmap, line);
-                        break;
-                    case Section.Editor:
-                        handleEditor(beatmap, line);
-                        break;
-                    case Section.Metadata:
-                        handleMetadata(beatmap, line);
-                        break;
-                    case Section.Difficulty:
-                        handleDifficulty(beatmap, line);
-                        break;
-                    case Section.Events:
-                        handleEvents(beatmap, line, ref storyboardSprite, ref timelineGroup);
-                        break;
-                    case Section.TimingPoints:
-                        handleTimingPoints(beatmap, line);
-                        break;
-                    case Section.Colours:
-                        handleColours(beatmap, line, ref hasCustomColours);
-                        break;
-                    case Section.HitObjects:
-
-                        // If the ruleset wasn't specified, assume the osu!standard ruleset.
-                        if (parser == null)
-                            parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
-
-                        var obj = parser.Parse(line);
-
-                        if (obj != null)
-                            beatmap.HitObjects.Add(obj);
-
-                        break;
-                    case Section.Variables:
-                        handleVariables(line);
-                        break;
-                }
-            }
-
-            foreach (var hitObject in beatmap.HitObjects)
-                hitObject.ApplyDefaults(beatmap.ControlPointInfo, beatmap.BeatmapInfo.BaseDifficulty);
-        }
-
-        private KeyValuePair<string, string> splitKeyVal(string line, char separator)
-        {
-            if (line == null)
-                throw new ArgumentNullException(nameof(line));
-
-            var split = line.Trim().Split(new[] { separator }, 2);
-
-            return new KeyValuePair<string, string>
-            (
-                split[0].Trim(),
-                split.Length > 1 ? split[1].Trim() : string.Empty
-            );
-        }
-
-        internal enum LegacySampleBank
-        {
-            None = 0,
-            Normal = 1,
-            Soft = 2,
-            Drum = 3
-        }
-
-        internal enum EventType
-        {
-            Background = 0,
-            Video = 1,
-            Break = 2,
-            Colour = 3,
-            Sprite = 4,
-            Sample = 5,
-            Animation = 6
-        }
-
-        internal enum LegacyOrigins
-        {
-            TopLeft,
-            Centre,
-            CentreLeft,
-            TopRight,
-            BottomCentre,
-            TopCentre,
-            Custom,
-            CentreRight,
-            BottomLeft,
-            BottomRight
-        };
-
-        internal enum StoryLayer
-        {
-            Background = 0,
-            Fail = 1,
-            Pass = 2,
-            Foreground = 3
-        }
-    }
-}

osu.Game/Beatmaps/WorkingBeatmap.cs

@@ -9,6 +9,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using osu.Game.Storyboards;
 
 namespace osu.Game.Beatmaps
 {
@@ -31,17 +32,19 @@ namespace osu.Game.Beatmaps
             Mods.ValueChanged += mods => applyRateAdjustments();
 
             beatmap = new AsyncLazy<Beatmap>(populateBeatmap);
-            background = new AsyncLazy<Texture>(populateBackground);
+            background = new AsyncLazy<Texture>(populateBackground, b => b == null || !b.IsDisposed);
             track = new AsyncLazy<Track>(populateTrack);
             waveform = new AsyncLazy<Waveform>(populateWaveform);
+            storyboard = new AsyncLazy<Storyboard>(populateStoryboard);
         }
 
         protected abstract Beatmap GetBeatmap();
         protected abstract Texture GetBackground();
         protected abstract Track GetTrack();
         protected virtual Waveform GetWaveform() => new Waveform();
+        protected virtual Storyboard GetStoryboard() => new Storyboard();
 
-        public bool BeatmapLoaded => beatmap.IsValueCreated;
+        public bool BeatmapLoaded => beatmap.IsResultAvailable;
         public Beatmap Beatmap => beatmap.Value.Result;
         public async Task<Beatmap> GetBeatmapAsync() => await beatmap.Value;
 
@@ -57,14 +60,14 @@ namespace osu.Game.Beatmaps
             return b;
         }
 
-        public bool BackgroundLoaded => background.IsValueCreated;
+        public bool BackgroundLoaded => background.IsResultAvailable;
         public Texture Background => background.Value.Result;
         public async Task<Texture> GetBackgroundAsync() => await background.Value;
         private AsyncLazy<Texture> background;
 
         private Texture populateBackground() => GetBackground();
 
-        public bool TrackLoaded => track.IsValueCreated;
+        public bool TrackLoaded => track.IsResultAvailable;
         public Track Track => track.Value.Result;
         public async Task<Track> GetTrackAsync() => await track.Value;
         private AsyncLazy<Track> track;
@@ -77,19 +80,26 @@ namespace osu.Game.Beatmaps
             return t;
         }
 
-        public bool WaveformLoaded => waveform.IsValueCreated;
+        public bool WaveformLoaded => waveform.IsResultAvailable;
         public Waveform Waveform => waveform.Value.Result;
         public async Task<Waveform> GetWaveformAsync() => await waveform.Value;
         private readonly AsyncLazy<Waveform> waveform;
 
         private Waveform populateWaveform() => GetWaveform();
 
+        public bool StoryboardLoaded => storyboard.IsResultAvailable;
+        public Storyboard Storyboard => storyboard.Value.Result;
+        public async Task<Storyboard> GetStoryboardAsync() => await storyboard.Value;
+        private readonly AsyncLazy<Storyboard> storyboard;
+
+        private Storyboard populateStoryboard() => GetStoryboard();
+
         public void TransferTo(WorkingBeatmap other)
         {
-            if (track.IsValueCreated && Track != null && BeatmapInfo.AudioEquals(other.BeatmapInfo))
+            if (track.IsResultAvailable && Track != null && BeatmapInfo.AudioEquals(other.BeatmapInfo))
                 other.track = track;
 
-            if (background.IsValueCreated && Background != null && BeatmapInfo.BackgroundEquals(other.BeatmapInfo))
+            if (background.IsResultAvailable && Background != null && BeatmapInfo.BackgroundEquals(other.BeatmapInfo))
                 other.background = background;
         }
 
@@ -97,16 +107,18 @@ namespace osu.Game.Beatmaps
         {
             if (BackgroundLoaded) Background?.Dispose();
             if (WaveformLoaded) Waveform?.Dispose();
+            if (StoryboardLoaded) Storyboard?.Dispose();
         }
 
-        public void DisposeTrack()
+        /// <summary>
-        {
+        /// Eagerly dispose of the audio track associated with this <see cref="WorkingBeatmap"/> (if any).
-            if (TrackLoaded) Track?.Dispose();
+        /// Accessing track again will load a fresh instance.
-        }
+        /// </summary>
+        public void RecycleTrack() => track.Recycle();
 
         private void applyRateAdjustments(Track t = null)
         {
-            if (t == null && track.IsValueCreated) t = Track;
+            if (t == null && track.IsResultAvailable) t = Track;
             if (t == null) return;
 
             t.ResetSpeedAdjustments();
@@ -114,12 +126,65 @@ namespace osu.Game.Beatmaps
                 mod.ApplyToClock(t);
         }
 
-        public class AsyncLazy<T> : Lazy<Task<T>>
+        public class AsyncLazy<T>
         {
-            public AsyncLazy(Func<T> valueFactory)
+            private Lazy<Task<T>> lazy;
-                : base(() => Task.Run(valueFactory))
+            private readonly Func<T> valueFactory;
+            private readonly Func<T, bool> stillValidFunction;
+
+            private readonly object initLock = new object();
+
+            public AsyncLazy(Func<T> valueFactory, Func<T, bool> stillValidFunction = null)
             {
+                this.valueFactory = valueFactory;
+                this.stillValidFunction = stillValidFunction;
+
+                recreate();
             }
+
+            public void Recycle()
+            {
+                if (!IsResultAvailable) return;
+
+                (lazy.Value.Result as IDisposable)?.Dispose();
+                recreate();
+            }
+
+            public bool IsResultAvailable
+            {
+                get
+                {
+                    recreateIfInvalid();
+                    return lazy.Value.IsCompleted;
+                }
+            }
+
+            public Task<T> Value
+            {
+                get
+                {
+                    recreateIfInvalid();
+                    return lazy.Value;
+                }
+            }
+
+            private void recreateIfInvalid()
+            {
+                lock (initLock)
+                {
+                    if (!lazy.IsValueCreated || !lazy.Value.IsCompleted)
+                        // we have not yet been initialised or haven't run the task.
+                        return;
+
+                    if (stillValidFunction?.Invoke(lazy.Value.Result) ?? true)
+                        // we are still in a valid state.
+                        return;
+
+                    recreate();
+                }
+            }
+
+            private void recreate() => lazy = new Lazy<Task<T>>(() => Task.Run(valueFactory));
         }
     }
 }

osu.Game/Input/Bindings/DatabasedKeyBindingInputManager.cs

@@ -14,7 +14,7 @@ namespace osu.Game.Input.Bindings
     /// A KeyBindingInputManager with a database backing for custom overrides.
     /// </summary>
     /// <typeparam name="T">The type of the custom action.</typeparam>
-    public abstract class DatabasedKeyBindingInputManager<T> : KeyBindingInputManager<T>
+    public class DatabasedKeyBindingInputManager<T> : KeyBindingContainer<T>
         where T : struct
     {
         private readonly RulesetInfo ruleset;
@@ -31,7 +31,7 @@ namespace osu.Game.Input.Bindings
         /// <param name="ruleset">A reference to identify the current <see cref="Ruleset"/>. Used to lookup mappings. Null for global mappings.</param>
         /// <param name="variant">An optional variant for the specified <see cref="Ruleset"/>. Used when a ruleset has more than one possible keyboard layouts.</param>
         /// <param name="simultaneousMode">Specify how to deal with multiple matches of <see cref="KeyCombination"/>s and <see cref="T"/>s.</param>
-        protected DatabasedKeyBindingInputManager(RulesetInfo ruleset = null, int? variant = null, SimultaneousBindingMode simultaneousMode = SimultaneousBindingMode.None)
+        public DatabasedKeyBindingInputManager(RulesetInfo ruleset = null, int? variant = null, SimultaneousBindingMode simultaneousMode = SimultaneousBindingMode.None)
             : base(simultaneousMode)
         {
             this.ruleset = ruleset;

osu.Game/Input/KeyBindingStore.cs

@@ -27,7 +27,7 @@ namespace osu.Game.Input
             }
         }
 
-        public void Register(KeyBindingInputManager manager) => insertDefaults(manager.DefaultKeyBindings);
+        public void Register(KeyBindingContainer manager) => insertDefaults(manager.DefaultKeyBindings);
 
         private void insertDefaults(IEnumerable<KeyBinding> defaults, int? rulesetId = null, int? variant = null)
         {

osu.Game/OsuGameBase.cs

@@ -154,7 +154,7 @@ namespace osu.Game
                         Debug.Assert(lastBeatmap != null);
                         Debug.Assert(lastBeatmap.Track != null);
 
-                        lastBeatmap.DisposeTrack();
+                        lastBeatmap.RecycleTrack();
                     }
 
                     Audio.Track.AddItem(b.Track);

osu.Game/Overlays/BeatmapSet/DownloadButton.cs

@@ -14,10 +14,10 @@ namespace osu.Game.Overlays.BeatmapSet
         public DownloadButton(string title, string subtitle)
         {
             Width = 120;
-            RelativeSizeAxes = Axes.Y;
 
-            Child = new Container
+            Add(new Container
             {
+                Depth = -1,
                 RelativeSizeAxes = Axes.Both,
                 Padding = new MarginPadding { Horizontal = 10 },
                 Children = new Drawable[]
@@ -53,7 +53,7 @@ namespace osu.Game.Overlays.BeatmapSet
                         Margin = new MarginPadding { Right = 5 },
                     },
                 },
-            };
+            });
         }
     }
 }

osu.Game/Overlays/BeatmapSet/FavouriteButton.cs

@@ -1,6 +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.Framework.Allocation;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,13 +16,12 @@ namespace osu.Game.Overlays.BeatmapSet
     {
         public readonly Bindable<bool> Favourited = new Bindable<bool>();
 
-        public FavouriteButton()
+        [BackgroundDependencyLoader]
+        private void load()
         {
-            RelativeSizeAxes = Axes.Y;
-
             Container pink;
             SpriteIcon icon;
-            Children = new Drawable[]
+            AddRange(new Drawable[]
             {
                 pink = new Container
                 {
@@ -51,7 +51,7 @@ namespace osu.Game.Overlays.BeatmapSet
                     Size = new Vector2(18),
                     Shadow = false,
                 },
-            };
+            });
 
             Favourited.ValueChanged += value =>
             {

osu.Game/Overlays/BeatmapSet/HeaderButton.cs

@@ -2,44 +2,27 @@
 // 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.Graphics.Shapes;
 using osu.Game.Graphics;
-using osu.Game.Graphics.Backgrounds;
+using osu.Game.Graphics.UserInterface;
-using osu.Game.Graphics.Containers;
+using osu.Framework.Allocation;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
-    public class HeaderButton : OsuClickableContainer
+    public class HeaderButton : TriangleButton
     {
-        private readonly Container content;
-
-        protected override Container<Drawable> Content => content;
-
         public HeaderButton()
         {
-            CornerRadius = 3;
+            Height = 0;
-            Masking = true;
+            RelativeSizeAxes = Axes.Y;
+        }
 
-            InternalChildren = new Drawable[]
+        [BackgroundDependencyLoader]
-            {
+        private void load()
-                new Box
+        {
-                {
+            BackgroundColour = OsuColour.FromHex(@"094c5f");
-                    RelativeSizeAxes = Axes.Both,
+            Triangles.ColourLight = OsuColour.FromHex(@"0f7c9b");
-                    Colour = OsuColour.FromHex(@"094c5f"),
+            Triangles.ColourDark = OsuColour.FromHex(@"094c5f");
-                },
+            Triangles.TriangleScale = 1.5f;
-                new Triangles
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    ColourLight = OsuColour.FromHex(@"0f7c9b"),
-                    ColourDark = OsuColour.FromHex(@"094c5f"),
-                    TriangleScale = 1.5f,
-                },
-                content = new Container
-                {
-                    RelativeSizeAxes = Axes.Both,
-                },
-            };
         }
     }
 }

osu.Game/Overlays/Direct/DirectPanel.cs

@@ -117,7 +117,7 @@ namespace osu.Game.Overlays.Direct
         {
             base.Update();
 
-            if (PreviewPlaying && Preview != null)
+            if (PreviewPlaying && Preview != null && Preview.IsLoaded)
             {
                 PreviewBar.Width = (float)(Preview.CurrentTime / Preview.Length);
             }

osu.Game/Overlays/Direct/FilterControl.cs

@@ -105,6 +105,7 @@ namespace osu.Game.Overlays.Direct
 
     public enum DirectSortCriteria
     {
+        Relevance,
         Title,
         Artist,
         Creator,

osu.Game/Overlays/DirectOverlay.cs

@@ -43,6 +43,7 @@ namespace osu.Game.Overlays
         protected override SearchableListFilterControl<DirectSortCriteria, RankStatus> CreateFilterControl() => new FilterControl();
 
         private IEnumerable<BeatmapSetInfo> beatmapSets;
+
         public IEnumerable<BeatmapSetInfo> BeatmapSets
         {
             get { return beatmapSets; }
@@ -69,6 +70,7 @@ namespace osu.Game.Overlays
         }
 
         private ResultCounts resultAmounts;
+
         public ResultCounts ResultAmounts
         {
             get { return resultAmounts; }
@@ -115,7 +117,23 @@ namespace osu.Game.Overlays
                 },
             };
 
-            Filter.Search.Current.ValueChanged += text => { if (text != string.Empty) Header.Tabs.Current.Value = DirectTab.Search; };
+            Filter.Search.Current.ValueChanged += text =>
+            {
+                if (text != string.Empty)
+                {
+                    Header.Tabs.Current.Value = DirectTab.Search;
+
+                    if (Filter.Tabs.Current.Value == DirectSortCriteria.Ranked)
+                        Filter.Tabs.Current.Value = DirectSortCriteria.Relevance;
+                }
+                else
+                {
+                    Header.Tabs.Current.Value = DirectTab.NewestMaps;
+
+                    if (Filter.Tabs.Current.Value == DirectSortCriteria.Relevance)
+                        Filter.Tabs.Current.Value = DirectSortCriteria.Ranked;
+                }
+            };
             ((FilterControl)Filter).Ruleset.ValueChanged += ruleset => Scheduler.AddOnce(updateSearch);
             Filter.DisplayStyleControl.DisplayStyle.ValueChanged += recreatePanels;
             Filter.DisplayStyleControl.Dropdown.Current.ValueChanged += rankStatus => Scheduler.AddOnce(updateSearch);
@@ -271,9 +289,9 @@ namespace osu.Game.Overlays
             if (Header.Tabs.Current.Value == DirectTab.Search && (Filter.Search.Text == string.Empty || currentQuery == string.Empty)) return;
 
             getSetsRequest = new SearchBeatmapSetsRequest(currentQuery.Value ?? string.Empty,
-                                                       ((FilterControl)Filter).Ruleset.Value,
+                ((FilterControl)Filter).Ruleset.Value,
-                                                       Filter.DisplayStyleControl.Dropdown.Current.Value,
+                Filter.DisplayStyleControl.Dropdown.Current.Value,
-                                                       Filter.Tabs.Current.Value); //todo: sort direction (?)
+                Filter.Tabs.Current.Value); //todo: sort direction (?)
 
             getSetsRequest.Success += response =>
             {

osu.Game/Overlays/KeyBinding/GlobalKeyBindingsSection.cs

@@ -12,7 +12,7 @@ namespace osu.Game.Overlays.KeyBinding
         public override FontAwesome Icon => FontAwesome.fa_osu_hot;
         public override string Header => "Global";
 
-        public GlobalKeyBindingsSection(KeyBindingInputManager manager)
+        public GlobalKeyBindingsSection(KeyBindingContainer manager)
         {
             Add(new DefaultBindingsSubsection(manager));
         }
@@ -21,7 +21,7 @@ namespace osu.Game.Overlays.KeyBinding
         {
             protected override string Header => string.Empty;
 
-            public DefaultBindingsSubsection(KeyBindingInputManager manager)
+            public DefaultBindingsSubsection(KeyBindingContainer manager)
                 : base(null)
             {
                 Defaults = manager.DefaultKeyBindings;

osu.Game/Overlays/Music/PlaylistList.cs

@@ -35,7 +35,11 @@ namespace osu.Game.Overlays.Music
             set { base.Padding = value; }
         }
 
-        public IEnumerable<BeatmapSetInfo> BeatmapSets { set { items.Sets = value; } }
+        public IEnumerable<BeatmapSetInfo> BeatmapSets
+        {
+            get { return items.Sets; }
+            set { items.Sets = value; }
+        }
 
         public BeatmapSetInfo FirstVisibleSet => items.FirstVisibleSet;
         public BeatmapSetInfo NextSet => items.NextSet;
@@ -48,7 +52,7 @@ namespace osu.Game.Overlays.Music
         }
 
         public void AddBeatmapSet(BeatmapSetInfo beatmapSet) => items.AddBeatmapSet(beatmapSet);
-        public bool RemoveBeatmapSet(BeatmapSetInfo beatmapSet) => items.RemoveBeatmapSet(beatmapSet);
+        public void RemoveBeatmapSet(BeatmapSetInfo beatmapSet) => items.RemoveBeatmapSet(beatmapSet);
 
         public void Filter(string searchTerm) => items.SearchTerm = searchTerm;
 
@@ -81,6 +85,7 @@ namespace osu.Game.Overlays.Music
 
             public IEnumerable<BeatmapSetInfo> Sets
             {
+                get { return items.Select(x => x.BeatmapSetInfo).ToList(); }
                 set
                 {
                     items.Clear();
@@ -103,12 +108,11 @@ namespace osu.Game.Overlays.Music
                 });
             }
 
-            public bool RemoveBeatmapSet(BeatmapSetInfo beatmapSet)
+            public void RemoveBeatmapSet(BeatmapSetInfo beatmapSet)
             {
                 var itemToRemove = items.FirstOrDefault(i => i.BeatmapSetInfo.ID == beatmapSet.ID);
-                if (itemToRemove == null)
+                if (itemToRemove != null)
-                    return false;
+                    items.Remove(itemToRemove);
-                return items.Remove(itemToRemove);
             }
 
             public BeatmapSetInfo SelectedSet
@@ -230,6 +234,7 @@ namespace osu.Game.Overlays.Music
             private class ItemSearchContainer : FillFlowContainer<PlaylistItem>, IHasFilterableChildren
             {
                 public IEnumerable<string> FilterTerms => new string[] { };
+
                 public bool MatchingFilter
                 {
                     set

osu.Game/Overlays/Music/PlaylistOverlay.cs

@@ -13,6 +13,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using OpenTK;
 using OpenTK.Graphics;
+using System.Threading;
 
 namespace osu.Game.Overlays.Music
 {
@@ -29,7 +30,7 @@ namespace osu.Game.Overlays.Music
 
         private readonly Bindable<WorkingBeatmap> beatmapBacking = new Bindable<WorkingBeatmap>();
 
-        public IEnumerable<BeatmapSetInfo> BeatmapSets;
+        public IEnumerable<BeatmapSetInfo> BeatmapSets => list.BeatmapSets;
 
         [BackgroundDependencyLoader]
         private void load(OsuGameBase game, BeatmapManager beatmaps, OsuColour colours)
@@ -74,11 +75,10 @@ namespace osu.Game.Overlays.Music
                 },
             };
 
-            beatmaps.BeatmapSetAdded += s => Schedule(() => list.AddBeatmapSet(s));
+            beatmaps.BeatmapSetAdded += list.AddBeatmapSet;
-            beatmaps.BeatmapSetRemoved += s => Schedule(() => list.RemoveBeatmapSet(s));
+            beatmaps.BeatmapSetRemoved += list.RemoveBeatmapSet;
-
-            list.BeatmapSets = BeatmapSets = beatmaps.GetAllUsableBeatmapSets();
 
+            list.BeatmapSets = beatmaps.GetAllUsableBeatmapSets();
 
             beatmapBacking.BindTo(game.Beatmap);
 
@@ -121,7 +121,7 @@ namespace osu.Game.Overlays.Music
                 return;
             }
 
-            playSpecified(set.Beatmaps[0]);
+            playSpecified(set.Beatmaps.First());
         }
 
         public void PlayPrevious()
@@ -130,7 +130,7 @@ namespace osu.Game.Overlays.Music
 
             if (playable != null)
             {
-                playSpecified(playable.Beatmaps[0]);
+                playSpecified(playable.Beatmaps.First());
                 list.SelectedSet = playable;
             }
         }
@@ -141,7 +141,7 @@ namespace osu.Game.Overlays.Music
 
             if (playable != null)
             {
-                playSpecified(playable.Beatmaps[0]);
+                playSpecified(playable.Beatmaps.First());
                 list.SelectedSet = playable;
             }
         }
@@ -149,7 +149,15 @@ namespace osu.Game.Overlays.Music
         private void playSpecified(BeatmapInfo info)
         {
             beatmapBacking.Value = beatmaps.GetWorkingBeatmap(info, beatmapBacking);
-            beatmapBacking.Value.Track.Start();
+
+            var track = beatmapBacking.Value.Track;
+
+            track.Restart();
+
+            // this is temporary until we have blocking (async.Wait()) audio component methods.
+            // then we can call RestartAsync().Wait() or the blocking version above.
+            while (!track.IsRunning)
+                Thread.Sleep(1);
         }
     }
 

osu.Game/Overlays/MusicController.cs

@@ -251,7 +251,7 @@ namespace osu.Game.Overlays
 
                 playButton.Icon = track.IsRunning ? FontAwesome.fa_pause_circle_o : FontAwesome.fa_play_circle_o;
 
-                if (track.HasCompleted && !track.Looping && !beatmapBacking.Disabled)
+                if (track.HasCompleted && !track.Looping && !beatmapBacking.Disabled && playlist.BeatmapSets.Any())
                     next();
             }
             else

osu.Game/Overlays/Profile/ProfileHeader.cs

@@ -382,7 +382,7 @@ namespace osu.Game.Overlays.Profile
             }
 
             tryAddInfoRightLine(FontAwesome.fa_map_marker, user.Location);
-            tryAddInfoRightLine(FontAwesome.fa_heart_o, user.Intrerests);
+            tryAddInfoRightLine(FontAwesome.fa_heart_o, user.Interests);
             tryAddInfoRightLine(FontAwesome.fa_suitcase, user.Occupation);
             infoTextRight.NewParagraph();
             if (!string.IsNullOrEmpty(user.Twitter))

osu.Game/Overlays/Profile/RankChart.cs

@@ -81,12 +81,12 @@ namespace osu.Game.Overlays.Profile
         {
             rankText.Text = user.Statistics.Rank > 0 ? $"#{user.Statistics.Rank:#,0}" : "no rank";
             performanceText.Text = user.Statistics.PP != null ? $"{user.Statistics.PP:#,0}pp" : string.Empty;
-            relativeText.Text = $"{user.Country?.FullName} #{user.CountryRank:#,0}";
+            relativeText.Text = user.CountryRank > 0 ? $"{user.Country?.FullName} #{user.CountryRank:#,0}" : $"{user.Country?.FullName}";
         }
 
         private void showHistoryRankTexts(int dayIndex)
         {
-            rankText.Text = $"#{ranks[dayIndex]:#,0}";
+            rankText.Text = ranks[dayIndex] > 0 ? $"#{ranks[dayIndex]:#,0}" : "no rank";
             dayIndex++;
             relativeText.Text = dayIndex == ranks.Length ? "Now" : $"{ranks.Length - dayIndex} days ago";
             //plural should be handled in a general way
@@ -99,7 +99,7 @@ namespace osu.Game.Overlays.Profile
             {
                 graph.Colour = colours.Yellow;
                 // use logarithmic coordinates
-                graph.Values = ranks.Select(x => -(float)Math.Log(x));
+                graph.Values = ranks.Select(x => x == 0 ? float.MinValue : -(float)Math.Log(x));
                 graph.SetStaticBallPosition();
             }
 

osu.Game/Overlays/Settings/Sections/Input/MouseSettings.cs

@@ -97,6 +97,11 @@ namespace osu.Game.Overlays.Settings.Sections.Input
                     doubleValue.ValueChanged += newValue => base.Bindable.Value = newValue;
                 }
             }
+
+            public SensitivitySetting()
+            {
+                KeyboardStep = 0.01f;
+            }
         }
 
         private class SensitivitySlider : OsuSliderBar<double>
@@ -105,8 +110,6 @@ namespace osu.Game.Overlays.Settings.Sections.Input
 
             public SensitivitySlider()
             {
-                KeyboardStep = 0.01f;
-
                 Current.ValueChanged += newValue =>
                 {
                     if (!isDragging && Sensitivity != null)
@@ -133,4 +136,4 @@ namespace osu.Game.Overlays.Settings.Sections.Input
             public override string TooltipText => Current.Disabled ? "Enable raw input to adjust sensitivity" : Current.Value.ToString(@"0.##x");
         }
     }
-}
+}

osu.Game/Rulesets/Edit/HitObjectComposer.cs

@@ -0,0 +1,109 @@
+// 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 OpenTK.Graphics;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Logging;
+using osu.Framework.Timing;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Edit.Tools;
+using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Edit.Screens.Compose.RadioButtons;
+
+namespace osu.Game.Rulesets.Edit
+{
+    public abstract class HitObjectComposer : CompositeDrawable
+    {
+        private readonly Ruleset ruleset;
+
+        protected ICompositionTool CurrentTool { get; private set; }
+
+        protected HitObjectComposer(Ruleset ruleset)
+        {
+            this.ruleset = ruleset;
+
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGameBase osuGame)
+        {
+            RulesetContainer rulesetContainer;
+            try
+            {
+                rulesetContainer = CreateRulesetContainer(ruleset, osuGame.Beatmap.Value);
+            }
+            catch (Exception e)
+            {
+                Logger.Log($"Could not load this beatmap sucessfully ({e})!", LoggingTarget.Runtime, LogLevel.Error);
+                return;
+            }
+
+            RadioButtonCollection toolboxCollection;
+            InternalChild = new GridContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                Content = new[]
+                {
+                    new Drawable[]
+                    {
+                        new FillFlowContainer
+                        {
+                            Name = "Sidebar",
+                            RelativeSizeAxes = Axes.Both,
+                            Padding = new MarginPadding { Right = 10 },
+                            Children = new Drawable[]
+                            {
+                                new ToolboxGroup { Child = toolboxCollection = new RadioButtonCollection { RelativeSizeAxes = Axes.X } }
+                            }
+                        },
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Masking = true,
+                            BorderColour = Color4.White,
+                            BorderThickness = 2,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Alpha = 0,
+                                    AlwaysPresent = true,
+                                },
+                                rulesetContainer
+                            }
+                        }
+                    },
+                },
+                ColumnDimensions = new[]
+                {
+                    new Dimension(GridSizeMode.Absolute, 200),
+                }
+            };
+
+            rulesetContainer.Clock = new InterpolatingFramedClock((IAdjustableClock)osuGame.Beatmap.Value.Track ?? new StopwatchClock());
+
+            toolboxCollection.Items =
+                new[] { new RadioButton("Select", () => setCompositionTool(null)) }
+                .Concat(
+                    CompositionTools.Select(t => new RadioButton(t.Name, () => setCompositionTool(t)))
+                )
+                .ToList();
+
+            toolboxCollection.Items[0].Select();
+        }
+
+        private void setCompositionTool(ICompositionTool tool) => CurrentTool = tool;
+
+        protected virtual RulesetContainer CreateRulesetContainer(Ruleset ruleset, WorkingBeatmap beatmap) => ruleset.CreateRulesetContainerWith(beatmap, true);
+
+        protected abstract IReadOnlyList<ICompositionTool> CompositionTools { get; }
+    }
+}

osu.Game/Rulesets/Edit/ToolboxGroup.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.Graphics;
+using osu.Game.Screens.Play.ReplaySettings;
+
+namespace osu.Game.Rulesets.Edit
+{
+    public class ToolboxGroup : ReplayGroup
+    {
+        protected override string Title => "toolbox";
+
+        public ToolboxGroup()
+        {
+            RelativeSizeAxes = Axes.X;
+            Width = 1;
+        }
+    }
+}

osu.Game/Rulesets/Edit/Tools/HitObjectCompositionTool.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
+
+using osu.Game.Rulesets.Objects;
+
+namespace osu.Game.Rulesets.Edit.Tools
+{
+    public class HitObjectCompositionTool<T> : ICompositionTool
+        where T : HitObject
+    {
+        public string Name => typeof(T).Name;
+    }
+}

osu.Game/Rulesets/Edit/Tools/ICompositionTool.cs

@@ -0,0 +1,10 @@
+// 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.Edit.Tools
+{
+    public interface ICompositionTool
+    {
+        string Name { get; }
+    }
+}

osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs

@@ -177,8 +177,8 @@ namespace osu.Game.Rulesets.Objects.Legacy
 
             string[] split = str.Split(':');
 
-            var bank = (OsuLegacyDecoder.LegacySampleBank)Convert.ToInt32(split[0]);
+            var bank = (LegacyDecoder.LegacySampleBank)Convert.ToInt32(split[0]);
-            var addbank = (OsuLegacyDecoder.LegacySampleBank)Convert.ToInt32(split[1]);
+            var addbank = (LegacyDecoder.LegacySampleBank)Convert.ToInt32(split[1]);
 
             // Let's not implement this for now, because this doesn't fit nicely into the bank structure
             //string sampleFile = split2.Length > 4 ? split2[4] : string.Empty;

osu.Game/Rulesets/Ruleset.cs

@@ -9,6 +9,7 @@ using osu.Framework.Input.Bindings;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Overlays.Settings;
+using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
@@ -52,6 +53,8 @@ namespace osu.Game.Rulesets
 
         public virtual PerformanceCalculator CreatePerformanceCalculator(Beatmap beatmap, Score score) => null;
 
+        public virtual HitObjectComposer CreateHitObjectComposer() => null;
+
         public virtual Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.fa_question_circle };
 
         public abstract string Description { get; }

osu.Game/Rulesets/UI/RulesetContainer.cs

@@ -55,6 +55,11 @@ namespace osu.Game.Rulesets.UI
 
         public abstract IEnumerable<HitObject> Objects { get; }
 
+        /// <summary>
+        /// The playfield.
+        /// </summary>
+        public Playfield Playfield { get; protected set; }
+
         protected readonly Ruleset Ruleset;
 
         /// <summary>
@@ -135,11 +140,6 @@ namespace osu.Game.Rulesets.UI
 
         public override ScoreProcessor CreateScoreProcessor() => new ScoreProcessor<TObject>(this);
 
-        /// <summary>
-        /// The playfield.
-        /// </summary>
-        public Playfield Playfield { get; private set; }
-
         protected override Container<Drawable> Content => content;
         private Container content;
 

osu.Game/Rulesets/UI/RulesetInputManager.cs

@@ -5,6 +5,8 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Input;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Timing;
@@ -16,11 +18,24 @@ using OpenTK.Input;
 
 namespace osu.Game.Rulesets.UI
 {
-    public abstract class RulesetInputManager<T> : DatabasedKeyBindingInputManager<T>, ICanAttachKeyCounter, IHasReplayHandler
+    public abstract class RulesetInputManager<T> : PassThroughInputManager, ICanAttachKeyCounter, IHasReplayHandler
         where T : struct
     {
-        protected RulesetInputManager(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique) : base(ruleset, variant, unique)
+        public class RulesetKeyBindingContainer : DatabasedKeyBindingInputManager<T>
         {
+            public RulesetKeyBindingContainer(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
+                : base(ruleset, variant, unique)
+            {
+            }
+        }
+
+        protected readonly KeyBindingContainer<T> KeyBindingContainer;
+
+        protected override Container<Drawable> Content => KeyBindingContainer;
+
+        protected RulesetInputManager(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
+        {
+            InternalChild = KeyBindingContainer = new RulesetKeyBindingContainer(ruleset, variant, unique);
         }
 
         #region Action mapping (for replays)
@@ -41,10 +56,10 @@ namespace osu.Game.Rulesets.UI
             List<T> newActions = replayState.PressedActions;
 
             foreach (var released in lastPressedActions.Except(newActions))
-                PropagateReleased(KeyBindingInputQueue, released);
+                KeyBindingContainer.TriggerReleased(released);
 
             foreach (var pressed in newActions.Except(lastPressedActions))
-                PropagatePressed(KeyBindingInputQueue, pressed);
+                KeyBindingContainer.TriggerPressed(pressed);
 
             lastPressedActions = newActions;
         }
@@ -203,7 +218,7 @@ namespace osu.Game.Rulesets.UI
             Add(receptor);
             keyCounter.SetReceptor(receptor);
 
-            keyCounter.AddRange(DefaultKeyBindings.Select(b => b.GetAction<T>()).Distinct().Select(b => new KeyCounterAction<T>(b)));
+            keyCounter.AddRange(KeyBindingContainer.DefaultKeyBindings.Select(b => b.GetAction<T>()).Distinct().Select(b => new KeyCounterAction<T>(b)));
         }
 
         public class ActionReceptor : KeyCounterCollection.Receptor, IKeyBindingHandler<T>

osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/TimelinePart.cs

@@ -40,7 +40,8 @@ namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
                 return;
             }
 
-            timeline.RelativeChildSize = new Vector2((float)Math.Max(1, Beatmap.Value.Track.Length), 1);
+            // Todo: This should be handled more gracefully
+            timeline.RelativeChildSize = Beatmap.Value.Track.Length == double.PositiveInfinity ? Vector2.One : new Vector2((float)Math.Max(1, Beatmap.Value.Track.Length), 1);
         }
 
         protected void Add(Drawable visualisation) => timeline.Add(visualisation);

osu.Game/Screens/Edit/Screens/Compose/Compose.cs

@@ -6,49 +6,99 @@ using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Framework.Logging;
+using osu.Game.Beatmaps;
 using osu.Game.Screens.Edit.Screens.Compose.Timeline;
 
 namespace osu.Game.Screens.Edit.Screens.Compose
 {
     public class Compose : EditorScreen
     {
+        private const float vertical_margins = 10;
+        private const float horizontal_margins = 20;
+
+        private readonly Container composerContainer;
+
         public Compose()
         {
             ScrollableTimeline timeline;
-            Children = new[]
+            Children = new Drawable[]
             {
-                new Container
+                new GridContainer
                 {
-                    Name = "Timeline",
+                    RelativeSizeAxes = Axes.Both,
-                    RelativeSizeAxes = Axes.X,
+                    Content = new[]
-                    Height = 110,
-                    Children = new Drawable[]
                     {
-                        new Box
+                        new Drawable[]
                         {
-                            RelativeSizeAxes = Axes.Both,
+                            new Container
-                            Colour = Color4.Black.Opacity(0.5f)
-                        },
-                        new Container
-                        {
-                            Name = "Content",
-                            RelativeSizeAxes = Axes.Both,
-                            Padding = new MarginPadding { Horizontal = 17, Vertical = 10 },
-                            Children = new Drawable[]
                             {
-                                new Container
+                                Name = "Timeline",
+                                RelativeSizeAxes = Axes.Both,
+                                Children = new Drawable[]
                                 {
-                                    RelativeSizeAxes = Axes.Both,
+                                    new Box
-                                    Padding = new MarginPadding { Right = 115 },
+                                    {
-                                    Child = timeline = new ScrollableTimeline { RelativeSizeAxes = Axes.Both }
+                                        RelativeSizeAxes = Axes.Both,
+                                        Colour = Color4.Black.Opacity(0.5f)
+                                    },
+                                    new Container
+                                    {
+                                        Name = "Timeline content",
+                                        RelativeSizeAxes = Axes.Both,
+                                        Padding = new MarginPadding { Horizontal = horizontal_margins, Vertical = vertical_margins },
+                                        Children = new Drawable[]
+                                        {
+                                            new Container
+                                            {
+                                                RelativeSizeAxes = Axes.Both,
+                                                Padding = new MarginPadding { Right = 115 },
+                                                Child = timeline = new ScrollableTimeline { RelativeSizeAxes = Axes.Both }
+                                            }
+                                        }
+                                    }
                                 }
                             }
+                        },
+                        new Drawable[]
+                        {
+                            composerContainer = new Container
+                            {
+                                Name = "Composer content",
+                                RelativeSizeAxes = Axes.Both,
+                                Padding = new MarginPadding { Horizontal = horizontal_margins, Vertical = vertical_margins },
+                            }
                         }
-                    }
+                    },
-                }
+                    RowDimensions = new[] { new Dimension(GridSizeMode.Absolute, 110) }
+                },
             };
 
             timeline.Beatmap.BindTo(Beatmap);
+            Beatmap.ValueChanged += beatmapChanged;
+        }
+
+        private void beatmapChanged(WorkingBeatmap newBeatmap)
+        {
+            composerContainer.Clear();
+
+            var ruleset = newBeatmap.BeatmapInfo.Ruleset?.CreateInstance();
+            if (ruleset == null)
+            {
+                Logger.Log("Beatmap doesn't have a ruleset assigned.");
+                // ExitRequested?.Invoke();
+                return;
+            }
+
+            var composer = ruleset.CreateHitObjectComposer();
+            if (composer == null)
+            {
+                Logger.Log($"Ruleset {ruleset.Description} doesn't support hitobject composition.");
+                // ExitRequested?.Invoke();
+                return;
+            }
+
+            composerContainer.Child = composer;
         }
     }
 }

osu.Game/Screens/Edit/Screens/Compose/RadioButtons/DrawableRadioButton.cs

@@ -0,0 +1,123 @@
+// 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.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Input;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+
+namespace osu.Game.Screens.Edit.Screens.Compose.RadioButtons
+{
+    public class DrawableRadioButton : TriangleButton
+    {
+        /// <summary>
+        /// Invoked when this <see cref="DrawableRadioButton"/> has been selected.
+        /// </summary>
+        public Action<RadioButton> Selected;
+
+        private Color4 defaultBackgroundColour;
+        private Color4 defaultBubbleColour;
+        private Color4 selectedBackgroundColour;
+        private Color4 selectedBubbleColour;
+
+        private readonly Drawable bubble;
+        private readonly RadioButton button;
+
+        public DrawableRadioButton(RadioButton button)
+        {
+            this.button = button;
+
+            Text = button.Text;
+            Action = button.Action;
+
+            RelativeSizeAxes = Axes.X;
+
+            bubble = new CircularContainer
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                RelativeSizeAxes = Axes.Both,
+                FillMode = FillMode.Fit,
+                Scale = new Vector2(0.5f),
+                X = 10,
+                Masking = true,
+                Blending = BlendingMode.Additive,
+                Child = new Box { RelativeSizeAxes = Axes.Both }
+            };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            defaultBackgroundColour = colours.Gray3;
+            defaultBubbleColour = defaultBackgroundColour.Darken(0.5f);
+            selectedBackgroundColour = colours.BlueDark;
+            selectedBubbleColour = selectedBackgroundColour.Lighten(0.5f);
+
+            Triangles.Alpha = 0;
+
+            Content.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Shadow,
+                Radius = 2,
+                Offset = new Vector2(0, 1),
+                Colour = Color4.Black.Opacity(0.5f)
+            };
+
+            Add(bubble);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            button.Selected.ValueChanged += v =>
+            {
+                updateSelectionState();
+                if (v)
+                    Selected?.Invoke(button);
+            };
+
+            updateSelectionState();
+        }
+
+        private void updateSelectionState()
+        {
+            if (!IsLoaded)
+                return;
+
+            BackgroundColour = button.Selected ? selectedBackgroundColour : defaultBackgroundColour;
+            bubble.Colour = button.Selected ? selectedBubbleColour : defaultBubbleColour;
+        }
+
+        protected override bool OnClick(InputState state)
+        {
+            if (button.Selected)
+                return true;
+
+            if (!Enabled)
+                return true;
+
+            button.Selected.Value = true;
+
+            return base.OnClick(state);
+        }
+
+        protected override SpriteText CreateText() => new OsuSpriteText
+        {
+            Depth = -1,
+            Origin = Anchor.CentreLeft,
+            Anchor = Anchor.CentreLeft,
+            X = 40f
+        };
+    }
+}

osu.Game/Screens/Edit/Screens/Compose/RadioButtons/RadioButton.cs

@@ -0,0 +1,51 @@
+// 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.Framework.Configuration;
+
+namespace osu.Game.Screens.Edit.Screens.Compose.RadioButtons
+{
+    public class RadioButton
+    {
+        /// <summary>
+        /// Whether this <see cref="RadioButton"/> is selected.
+        /// </summary>
+        /// <returns></returns>
+        public readonly BindableBool Selected;
+
+        /// <summary>
+        /// The text that should be displayed in this button.
+        /// </summary>
+        public string Text;
+
+        /// <summary>
+        /// The <see cref="Action"/> that should be invoked when this button is selected.
+        /// </summary>
+        public Action Action;
+
+        public RadioButton(string text, Action action)
+        {
+            Text = text;
+            Action = action;
+            Selected = new BindableBool();
+        }
+
+        public RadioButton(string text)
+            : this(text, null)
+        {
+            Text = text;
+            Action = null;
+        }
+
+        /// <summary>
+        /// Selects this <see cref="RadioButton"/>.
+        /// </summary>
+        public void Select() => Selected.Value = true;
+
+        /// <summary>
+        /// Deselects this <see cref="RadioButton"/>.
+        /// </summary>
+        public void Deselect() => Selected.Value = false;
+    }
+}

osu.Game/Screens/Edit/Screens/Compose/RadioButtons/RadioButtonCollection.cs

@@ -0,0 +1,61 @@
+// 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 OpenTK;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Screens.Edit.Screens.Compose.RadioButtons
+{
+    public class RadioButtonCollection : CompositeDrawable
+    {
+        private IReadOnlyList<RadioButton> items;
+        public IReadOnlyList<RadioButton> Items
+        {
+            get { return items; }
+            set
+            {
+                if (ReferenceEquals(items, value))
+                    return;
+                items = value;
+
+                buttonContainer.Clear();
+                items.ForEach(addButton);
+            }
+        }
+
+        private readonly FlowContainer<DrawableRadioButton> buttonContainer;
+
+        public RadioButtonCollection()
+        {
+            AutoSizeAxes = Axes.Y;
+
+            InternalChild = buttonContainer = new FillFlowContainer<DrawableRadioButton>
+            {
+                RelativeSizeAxes = Axes.X,
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(0, 5)
+            };
+        }
+
+        private RadioButton currentlySelected;
+        private void addButton(RadioButton button)
+        {
+            button.Selected.ValueChanged += v =>
+            {
+                if (v)
+                {
+                    currentlySelected?.Deselect();
+                    currentlySelected = button;
+                }
+                else
+                    currentlySelected = null;
+            };
+
+            buttonContainer.Add(new DrawableRadioButton(button));
+        }
+    }
+}

osu.Game/Screens/Loader.cs

@@ -1,8 +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
 
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shaders;
 using osu.Game.Screens.Menu;
 using OpenTK;
 using osu.Framework.Screens;
@@ -33,14 +37,28 @@ namespace osu.Game.Screens
             logo.FadeInFromZero(5000, Easing.OutQuint);
         }
 
+        private OsuScreen loadScreen;
+        private ShaderPrecompiler precompiler;
+
         protected override void OnEntering(Screen last)
         {
             base.OnEntering(last);
 
-            if (showDisclaimer)
+            LoadComponentAsync(precompiler = new ShaderPrecompiler(loadIfReady), Add);
-                LoadComponentAsync(new Disclaimer(), d => Push(d));
+            LoadComponentAsync(loadScreen = showDisclaimer ? (OsuScreen)new Disclaimer() : new Intro(), s => loadIfReady());
-            else
+        }
-                LoadComponentAsync(new Intro(), d => Push(d));
+
+        private void loadIfReady()
+        {
+            if (ChildScreen == loadScreen) return;
+
+            if (loadScreen.LoadState != LoadState.Ready)
+                return;
+
+            if (!precompiler.FinishedCompiling)
+                return;
+
+            Push(loadScreen);
         }
 
         protected override void LogoSuspending(OsuLogo logo)
@@ -54,5 +72,49 @@ namespace osu.Game.Screens
         {
             showDisclaimer = game.IsDeployedBuild;
         }
+
+        /// <summary>
+        /// Compiles a set of shaders before continuing. Attempts to draw some frames between compilation by limiting to one compile per draw frame.
+        /// </summary>
+        public class ShaderPrecompiler : Drawable
+        {
+            private readonly Action onLoaded;
+            private readonly List<Shader> loadTargets = new List<Shader>();
+
+            public bool FinishedCompiling { get; private set; }
+
+            public ShaderPrecompiler(Action onLoaded)
+            {
+                this.onLoaded = onLoaded;
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(ShaderManager manager)
+            {
+                loadTargets.Add(manager.Load(VertexShaderDescriptor.TEXTURE_2, FragmentShaderDescriptor.TEXTURE_ROUNDED));
+                loadTargets.Add(manager.Load(VertexShaderDescriptor.TEXTURE_2, FragmentShaderDescriptor.BLUR));
+                loadTargets.Add(manager.Load(VertexShaderDescriptor.TEXTURE_2, FragmentShaderDescriptor.TEXTURE));
+
+                loadTargets.Add(manager.Load(@"CursorTrail", FragmentShaderDescriptor.TEXTURE));
+
+                loadTargets.Add(manager.Load(VertexShaderDescriptor.TEXTURE_3, FragmentShaderDescriptor.TEXTURE_ROUNDED));
+                loadTargets.Add(manager.Load(VertexShaderDescriptor.TEXTURE_3, FragmentShaderDescriptor.TEXTURE));
+            }
+
+            private Shader currentLoadTarget;
+
+            protected override void Update()
+            {
+                base.Update();
+
+                // if our target is null we are done.
+                if (loadTargets.All(s => s.Loaded))
+                {
+                    FinishedCompiling = true;
+                    Expire();
+                    onLoaded?.Invoke();
+                }
+            }
+        }
     }
 }

osu.Game/Screens/OsuScreen.cs

@@ -13,6 +13,8 @@ using osu.Framework.Audio;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets;
 using osu.Game.Screens.Menu;
+using osu.Framework.Input;
+using OpenTK.Input;
 
 namespace osu.Game.Screens
 {
@@ -73,6 +75,20 @@ namespace osu.Game.Screens
             sampleExit = audio.Sample.Get(@"UI/screen-back");
         }
 
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            if (args.Repeat || !IsCurrentScreen) return false;
+
+            switch (args.Key)
+            {
+                case Key.Escape:
+                    Exit();
+                    return true;
+            }
+
+            return base.OnKeyDown(state, args);
+        }
+
         protected override void OnResuming(Screen last)
         {
             base.OnResuming(last);

osu.Game/Screens/Play/Player.cs

@@ -245,7 +245,7 @@ namespace osu.Game.Screens.Play
 
         private void initializeStoryboard(bool asyncLoad)
         {
-            var beatmap = Beatmap.Value.Beatmap;
+            var beatmap = Beatmap.Value;
 
             storyboard = beatmap.Storyboard.CreateDrawable(Beatmap.Value);
             storyboard.Masking = true;
@@ -388,7 +388,7 @@ namespace osu.Game.Screens.Play
                 initializeStoryboard(true);
 
             var beatmap = Beatmap.Value;
-            var storyboardVisible = showStoryboard && beatmap.Beatmap.Storyboard.HasDrawable;
+            var storyboardVisible = showStoryboard && beatmap.Storyboard.HasDrawable;
 
             storyboardContainer.FadeColour(new Color4(opacity, opacity, opacity, 1), 800);
             storyboardContainer.FadeTo(storyboardVisible && opacity > 0 ? 1 : 0);

osu.Game/Screens/Select/BeatmapCarousel.cs

@@ -45,7 +45,7 @@ namespace osu.Game.Screens.Select
 
                 Task.Run(() =>
                 {
-                    newGroups = value.Select(createGroup).ToList();
+                    newGroups = value.Select(createGroup).Where(g => g != null).ToList();
                     criteria.Filter(newGroups);
                 }).ContinueWith(t =>
                 {
@@ -124,16 +124,19 @@ namespace osu.Game.Screens.Select
             // todo: this method should be smarter as to not recreate panels that haven't changed, etc.
             var group = groups.Find(b => b.BeatmapSet.ID == set.ID);
 
-            if (group == null)
-                return;
-
             int i = groups.IndexOf(group);
-            groups.RemoveAt(i);
+            if (i >= 0)
+                groups.RemoveAt(i);
 
             var newGroup = createGroup(set);
 
             if (newGroup != null)
-                groups.Insert(i, newGroup);
+            {
+                if (i >= 0)
+                    groups.Insert(i, newGroup);
+                else
+                    groups.Add(newGroup);
+            }
 
             bool hadSelection = selectedGroup == group;
 

osu.Game/Screens/Select/SongSelect.cs

@@ -263,10 +263,7 @@ namespace osu.Game.Screens.Select
             beatmapNoDebounce = beatmap;
 
             if (beatmap == null)
-            {
+                performLoad();
-                if (!Beatmap.IsDefault)
-                    performLoad();
-            }
             else
             {
                 if (beatmap.BeatmapSetInfoID == beatmapNoDebounce?.BeatmapSetInfoID)

osu.Game/Storyboards/Storyboard.cs

@@ -5,10 +5,11 @@ using osu.Game.Beatmaps;
 using osu.Game.Storyboards.Drawables;
 using System.Collections.Generic;
 using System.Linq;
+using System;
 
 namespace osu.Game.Storyboards
 {
-    public class Storyboard
+    public class Storyboard : IDisposable
     {
         private readonly Dictionary<string, StoryboardLayer> layers = new Dictionary<string, StoryboardLayer>();
         public IEnumerable<StoryboardLayer> Layers => layers.Values;
@@ -59,5 +60,29 @@ namespace osu.Game.Storyboards
             }
             return drawable;
         }
+
+        #region Disposal
+
+        ~Storyboard()
+        {
+            Dispose(false);
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        private bool isDisposed;
+
+        protected virtual void Dispose(bool isDisposing)
+        {
+            if (isDisposed)
+                return;
+            isDisposed = true;
+        }
+
+        #endregion
     }
 }

osu.Game/Tests/Visual/TestCasePlayer.cs

@@ -8,7 +8,6 @@ using System.Text;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps;
-using osu.Game.Beatmaps.Formats;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play;
@@ -63,7 +62,7 @@ namespace osu.Game.Tests.Visual
 
             using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(test_beatmap_data)))
             using (var reader = new StreamReader(stream))
-                beatmap = BeatmapDecoder.GetDecoder(reader).Decode(reader);
+                beatmap = Game.Beatmaps.Formats.Decoder.GetDecoder(reader).DecodeBeatmap(reader);
 
             return beatmap;
         }

osu.Game/Users/User.cs

@@ -75,7 +75,7 @@ namespace osu.Game.Users
         public bool Active;
 
         [JsonProperty(@"interests")]
-        public string Intrerests;
+        public string Interests;
 
         [JsonProperty(@"occupation")]
         public string Occupation;

osu.Game/osu.Game.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <Import Project="..\osu.Game.props" />
   <PropertyGroup>
     <ProjectGuid>{2A66DD92-ADB1-4994-89E2-C94E04ACDA0D}</ProjectGuid>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -61,7 +62,6 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <Commandlineparameters>
     </Commandlineparameters>
-    <LangVersion>6</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>none</DebugType>
@@ -195,9 +195,6 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\osu.licenseheader">
-      <Link>osu.licenseheader</Link>
-    </None>
     <None Include="app.config" />
     <None Include="OpenTK.dll.config" />
     <None Include="osu!.res" />
@@ -269,6 +266,8 @@
     <Compile Include="Beatmaps\Drawables\BeatmapPanel.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapSetCover.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapSetHeader.cs" />
+    <Compile Include="Beatmaps\Formats\LegacyDecoder.cs" />
+    <Compile Include="Beatmaps\Formats\LegacyStoryboardDecoder.cs" />
     <Compile Include="Database\DatabaseContextFactory.cs" />
     <Compile Include="Database\IHasPrimaryKey.cs" />
     <Compile Include="Graphics\UserInterface\HoverClickSounds.cs" />
@@ -283,7 +282,7 @@
       <DependentUpon>20171025071459_AddMissingIndexRules.cs</DependentUpon>
     </Compile>
     <Compile Include="Migrations\20171119065731_AddBeatmapOnlineIDUniqueConstraint.cs" />
-    <Compile Include="Migrations\20171119065731_AddBeatmapOnlineIDUniqueConstraint.designer.cs">
+    <Compile Include="Migrations\20171119065731_AddBeatmapOnlineIDUniqueConstraint.Designer.cs">
       <DependentUpon>20171119065731_AddBeatmapOnlineIDUniqueConstraint.cs</DependentUpon>
     </Compile>
     <Compile Include="Migrations\OsuDbContextModelSnapshot.cs" />
@@ -311,16 +310,19 @@
     <Compile Include="Screens\Edit\Components\PlaybackControl.cs" />
     <Compile Include="Screens\Edit\Components\TimeInfoContainer.cs" />
     <Compile Include="Rulesets\Mods\IApplicableToScoreProcessor.cs" />
-    <Compile Include="Screens\Edit\Screens\Compose\Timeline\BeatmapWaveformGraph.cs" />
     <Compile Include="Beatmaps\Drawables\DifficultyColouredContainer.cs" />
     <Compile Include="Beatmaps\Drawables\DifficultyIcon.cs" />
     <Compile Include="Beatmaps\Drawables\Panel.cs" />
     <Compile Include="Beatmaps\DummyWorkingBeatmap.cs" />
-    <Compile Include="Beatmaps\Formats\BeatmapDecoder.cs" />
+    <Compile Include="Beatmaps\Formats\Decoder.cs" />
-    <Compile Include="Beatmaps\Formats\OsuLegacyDecoder.cs" />
+    <Compile Include="Beatmaps\Formats\LegacyBeatmapDecoder.cs" />
     <Compile Include="Beatmaps\IO\ArchiveReader.cs" />
     <Compile Include="Beatmaps\IO\LegacyFilesystemReader.cs" />
     <Compile Include="Online\API\Requests\GetUserScoresRequest.cs" />
+    <Compile Include="Screens\Edit\Screens\Compose\RadioButtons\DrawableRadioButton.cs" />
+    <Compile Include="Screens\Edit\Screens\Compose\RadioButtons\RadioButton.cs" />
+    <Compile Include="Screens\Edit\Screens\Compose\RadioButtons\RadioButtonCollection.cs" />
+    <Compile Include="Screens\Edit\Screens\Compose\Timeline\BeatmapWaveformGraph.cs" />
     <Compile Include="Screens\Edit\Screens\Compose\Timeline\TimelineButton.cs" />
     <Compile Include="Screens\Play\BreaksOverlay\ArrowsOverlay.cs" />
     <Compile Include="Screens\Play\BreaksOverlay\BlurredIcon.cs" />
@@ -564,6 +566,10 @@
     <Compile Include="Overlays\UserProfileOverlay.cs" />
     <Compile Include="Overlays\WaveOverlayContainer.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Rulesets\Edit\Tools\HitObjectCompositionTool.cs" />
+    <Compile Include="Rulesets\Edit\Tools\ICompositionTool.cs" />
+    <Compile Include="Rulesets\Edit\HitObjectComposer.cs" />
+    <Compile Include="Rulesets\Edit\ToolboxGroup.cs" />
     <Compile Include="Rulesets\Judgements\DrawableJudgement.cs" />
     <Compile Include="Rulesets\Judgements\Judgement.cs" />
     <Compile Include="Rulesets\Mods\IApplicableToClock.cs" />
@@ -819,6 +825,9 @@
     <Compile Include="Overlays\BeatmapSet\SuccessRate.cs" />
     <Compile Include="Overlays\BeatmapSet\PreviewButton.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.

osu.sln.DotSettings

@@ -34,6 +34,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertToAutoProperty/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertToConstant_002ELocal/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertToLambdaExpression/@EntryIndexedValue">WARNING</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertToLocalFunction/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertToStaticClass/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=DoubleNegationOperator/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=EmptyGeneralCatchClause/@EntryIndexedValue">DO_NOT_SHOW</s:String>
@@ -44,13 +45,16 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ForCanBeConvertedToForeach/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InconsistentNaming/@EntryIndexedValue">ERROR</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InheritdocConsiderUsage/@EntryIndexedValue">HINT</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InlineOutVariableDeclaration/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InvertIf/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InvokeAsExtensionMethod/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=JoinDeclarationAndInitializer/@EntryIndexedValue">WARNING</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=JoinNullCheckWithUsage/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MemberCanBeMadeStatic_002ELocal/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MemberCanBePrivate_002EGlobal/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MemberCanBePrivate_002ELocal/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MemberCanBeProtected_002EGlobal/@EntryIndexedValue">HINT</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MergeCastWithTypeCheck/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MergeConditionalExpression/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MergeSequentialChecks/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=MethodSupportsCancellation/@EntryIndexedValue">WARNING</s:String>
@@ -149,6 +153,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UseNameofExpression/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UseNullPropagation/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UseObjectOrCollectionInitializer/@EntryIndexedValue">WARNING</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UsePatternMatching/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UseStringInterpolation/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=VariableCanBeMadeConst/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=VirtualMemberCallInConstructor/@EntryIndexedValue">HINT</s:String>