Merge remote-tracking branch 'origin/master' into non-null-ruleset

# Conflicts:
#	osu.Game/Screens/Select/FilterControl.cs

osu.Desktop/osu.Desktop.csproj

@@ -29,7 +29,7 @@
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.5.0" />
   </ItemGroup>
   <ItemGroup Label="Package References">
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.1.1" />
     <PackageReference Include="squirrel.windows" Version="1.8.0" Condition="'$(TargetFramework)' == 'net471'" />
   </ItemGroup>

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

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using Newtonsoft.Json;
 using NUnit.Framework;
 using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Catch.Objects;
@@ -12,11 +13,14 @@ using osu.Game.Tests.Beatmaps;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
-    internal class CatchBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
+    [TestFixture]
+    public class CatchBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Catch";
 
-        [TestCase("basic"), Ignore("See: https://github.com/ppy/osu/issues/2232")]
+        [TestCase("basic")]
+        [TestCase("spinner")]
+        [TestCase("spinner-and-circles")]
         public new void Test(string name)
         {
             base.Test(name);
@@ -27,36 +31,52 @@ namespace osu.Game.Rulesets.Catch.Tests
             if (hitObject is JuiceStream stream)
             {
                 foreach (var nested in stream.NestedHitObjects)
-                {
-                    yield return new ConvertValue
-                    {
-                        StartTime = nested.StartTime,
-                        Position = ((CatchHitObject)nested).X * CatchPlayfield.BASE_WIDTH
-                    };
-                }
+                    yield return new ConvertValue((CatchHitObject)nested);
+            }
+            else if (hitObject is BananaShower shower)
+            {
+                foreach (var nested in shower.NestedHitObjects)
+                    yield return new ConvertValue((CatchHitObject)nested);
             }
             else
-            {
-                yield return new ConvertValue
-                {
-                    StartTime = hitObject.StartTime,
-                    Position = ((CatchHitObject)hitObject).X * CatchPlayfield.BASE_WIDTH
-                };
-            }
+                yield return new ConvertValue((CatchHitObject)hitObject);
         }
 
         protected override Ruleset CreateRuleset() => new CatchRuleset();
     }
 
-    internal struct ConvertValue : IEquatable<ConvertValue>
+    public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
         /// A sane value to account for osu!stable using ints everwhere.
         /// </summary>
         private const float conversion_lenience = 2;
 
-        public double StartTime;
-        public float Position;
+        [JsonIgnore]
+        public readonly CatchHitObject HitObject;
+
+        public ConvertValue(CatchHitObject hitObject)
+        {
+            HitObject = hitObject;
+            startTime = 0;
+            position = 0;
+        }
+
+        private double startTime;
+
+        public double StartTime
+        {
+            get => HitObject?.StartTime ?? startTime;
+            set => startTime = value;
+        }
+
+        private float position;
+
+        public float Position
+        {
+            get => HitObject?.X * CatchPlayfield.BASE_WIDTH ?? position;
+            set => position = value;
+        }
 
         public bool Equals(ConvertValue other)
             => Precision.AlmostEquals(StartTime, other.StartTime, conversion_lenience)

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

@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Catch.Tests
         private DrawableFruit createDrawable(int index)
         {
             Fruit fruit = index == 5
-                ? new BananaShower.Banana
+                ? new Banana
                 {
                     StartTime = 1000000000000,
                     IndexInBeatmap = index,

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

@@ -26,22 +26,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
             var positionData = obj as IHasXPosition;
             var comboData = obj as IHasCombo;
             var endTime = obj as IHasEndTime;
-
-            if (positionData == null)
-            {
-                if (endTime != null)
-                {
-                    yield return new BananaShower
-                    {
-                        StartTime = obj.StartTime,
-                        Samples = obj.Samples,
-                        Duration = endTime.Duration,
-                        NewCombo = comboData?.NewCombo ?? false
-                    };
-                }
-
-                yield break;
-            }
+            var legacyOffset = obj as IHasLegacyLastTickOffset;
 
             if (curveData != null)
             {
@@ -54,20 +39,31 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                     Distance = curveData.Distance,
                     RepeatSamples = curveData.RepeatSamples,
                     RepeatCount = curveData.RepeatCount,
-                    X = positionData.X / CatchPlayfield.BASE_WIDTH,
+                    X = (positionData?.X ?? 0) / CatchPlayfield.BASE_WIDTH,
+                    NewCombo = comboData?.NewCombo ?? false,
+                    LegacyLastTickOffset = legacyOffset?.LegacyLastTickOffset ?? 0
+                };
+            }
+            else if (endTime != null)
+            {
+                yield return new BananaShower
+                {
+                    StartTime = obj.StartTime,
+                    Samples = obj.Samples,
+                    Duration = endTime.Duration,
                     NewCombo = comboData?.NewCombo ?? false
                 };
-
-                yield break;
             }
-
-            yield return new Fruit
+            else
             {
-                StartTime = obj.StartTime,
-                Samples = obj.Samples,
-                NewCombo = comboData?.NewCombo ?? false,
-                X = positionData.X / CatchPlayfield.BASE_WIDTH
-            };
+                yield return new Fruit
+                {
+                    StartTime = obj.StartTime,
+                    Samples = obj.Samples,
+                    NewCombo = comboData?.NewCombo ?? false,
+                    X = (positionData?.X ?? 0) / CatchPlayfield.BASE_WIDTH
+                };
+            }
         }
 
         protected override Beatmap<CatchHitObject> CreateBeatmap() => new CatchBeatmap();

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

@@ -9,11 +9,14 @@ using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Types;
 using OpenTK;
+using osu.Game.Rulesets.Catch.MathUtils;
 
 namespace osu.Game.Rulesets.Catch.Beatmaps
 {
     public class CatchBeatmapProcessor : BeatmapProcessor
     {
+        public const int RNG_SEED = 1337;
+
         public CatchBeatmapProcessor(IBeatmap beatmap)
             : base(beatmap)
         {
@@ -21,13 +24,52 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
         public override void PostProcess()
         {
-            initialiseHyperDash((List<CatchHitObject>)Beatmap.HitObjects);
-
             base.PostProcess();
 
+            applyPositionOffsets();
+
+            initialiseHyperDash((List<CatchHitObject>)Beatmap.HitObjects);
+
             int index = 0;
             foreach (var obj in Beatmap.HitObjects.OfType<CatchHitObject>())
+            {
                 obj.IndexInBeatmap = index++;
+                if (obj.LastInCombo && obj.NestedHitObjects.LastOrDefault() is IHasComboInformation lastNested)
+                    lastNested.LastInCombo = true;
+            }
+        }
+
+        private void applyPositionOffsets()
+        {
+            var rng = new FastRandom(RNG_SEED);
+            // todo: HardRock displacement should be applied here
+
+            foreach (var obj in Beatmap.HitObjects)
+            {
+                switch (obj)
+                {
+                    case BananaShower bananaShower:
+                        foreach (var banana in bananaShower.NestedHitObjects.OfType<Banana>())
+                        {
+                            banana.X = (float)rng.NextDouble();
+                            rng.Next(); // osu!stable retrieved a random banana type
+                            rng.Next(); // osu!stable retrieved a random banana rotation
+                            rng.Next(); // osu!stable retrieved a random banana colour
+                        }
+                        break;
+                    case JuiceStream juiceStream:
+                        foreach (var nested in juiceStream.NestedHitObjects)
+                        {
+                            var hitObject = (CatchHitObject)nested;
+                            if (hitObject is TinyDroplet)
+                                hitObject.X += rng.Next(-20, 20) / CatchPlayfield.BASE_WIDTH;
+                            else if (hitObject is Droplet)
+                                rng.Next(); // osu!stable retrieved a random droplet rotation
+                            hitObject.X = MathHelper.Clamp(hitObject.X, 0, 1);
+                        }
+                        break;
+                }
+            }
         }
 
         private void initialiseHyperDash(List<CatchHitObject> objects)

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

@@ -0,0 +1,36 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Catch.Judgements
+{
+    public class CatchBananaJudgement : CatchJudgement
+    {
+        public override bool AffectsCombo => false;
+
+        public override bool ShouldExplode => true;
+
+        protected override int NumericResultFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 1100;
+            }
+        }
+
+        protected override float HealthIncreaseFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 8;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,32 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Catch.Judgements
+{
+    public class CatchDropletJudgement : CatchJudgement
+    {
+        protected override int NumericResultFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 30;
+            }
+        }
+
+        protected override float HealthIncreaseFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 7;
+            }
+        }
+    }
+}

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

@@ -2,11 +2,51 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchJudgement : Judgement
     {
-        // todo: wangs
+        public override HitResult MaxResult => HitResult.Perfect;
+
+        protected override int NumericResultFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 300;
+            }
+        }
+
+        /// <summary>
+        /// The base health increase for the result achieved.
+        /// </summary>
+        public float HealthIncrease => HealthIncreaseFor(Result);
+
+        /// <summary>
+        /// Whether fruit on the platter should explode or drop.
+        /// Note that this is only checked if the owning object is also <see cref="IHasComboInformation.LastInCombo" />
+        /// </summary>
+        public virtual bool ShouldExplode => IsHit;
+
+        /// <summary>
+        /// Convert a <see cref="HitResult"/> to a base health increase.
+        /// </summary>
+        /// <param name="result">The value to convert.</param>
+        /// <returns>The base health increase.</returns>
+        protected virtual float HealthIncreaseFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 10.2f;
+            }
+        }
     }
 }

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

@@ -0,0 +1,34 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Catch.Judgements
+{
+    public class CatchTinyDropletJudgement : CatchJudgement
+    {
+        public override bool AffectsCombo => false;
+
+        protected override int NumericResultFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 10;
+            }
+        }
+
+        protected override float HealthIncreaseFor(HitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case HitResult.Perfect:
+                    return 4;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,91 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+
+namespace osu.Game.Rulesets.Catch.MathUtils
+{
+    /// <summary>
+    /// A PRNG specified in http://heliosphan.org/fastrandom.html.
+    /// </summary>
+    public class FastRandom
+    {
+        private const double int_to_real = 1.0 / (int.MaxValue + 1.0);
+        private const uint int_mask = 0x7FFFFFFF;
+        private const uint y = 842502087;
+        private const uint z = 3579807591;
+        private const uint w = 273326509;
+        private uint _x, _y = y, _z = z, _w = w;
+
+        public FastRandom(int seed)
+        {
+            _x = (uint)seed;
+        }
+
+        public FastRandom()
+            : this(Environment.TickCount)
+        {
+        }
+
+        /// <summary>
+        /// Generates a random unsigned integer within the range [<see cref="uint.MinValue"/>, <see cref="uint.MaxValue"/>).
+        /// </summary>
+        /// <returns>The random value.</returns>
+        public uint NextUInt()
+        {
+            uint t = _x ^ _x << 11;
+            _x = _y;
+            _y = _z;
+            _z = _w;
+            return _w = _w ^ _w >> 19 ^ t ^ t >> 8;
+        }
+
+        /// <summary>
+        /// Generates a random integer value within the range [0, <see cref="int.MaxValue"/>).
+        /// </summary>
+        /// <returns>The random value.</returns>
+        public int Next() => (int)(int_mask & NextUInt());
+
+        /// <summary>
+        /// Generates a random integer value within the range [0, <paramref name="upperBound"/>).
+        /// </summary>
+        /// <param name="upperBound">The upper bound.</param>
+        /// <returns>The random value.</returns>
+        public int Next(int upperBound) => (int)(NextDouble() * upperBound);
+
+        /// <summary>
+        /// Generates a random integer value within the range [<paramref name="lowerBound"/>, <paramref name="upperBound"/>).
+        /// </summary>
+        /// <param name="lowerBound">The lower bound of the range.</param>
+        /// <param name="upperBound">The upper bound of the range.</param>
+        /// <returns>The random value.</returns>
+        public int Next(int lowerBound, int upperBound) => (int)(lowerBound + NextDouble() * (upperBound - lowerBound));
+
+        /// <summary>
+        /// Generates a random double value within the range [0, 1).
+        /// </summary>
+        /// <returns>The random value.</returns>
+        public double NextDouble() => int_to_real * Next();
+
+        private uint bitBuffer;
+        private int bitIndex = 32;
+
+        /// <summary>
+        /// Generates a reandom boolean value. Cached such that a random value is only generated once in every 32 calls.
+        /// </summary>
+        /// <returns>The random value.</returns>
+        public bool NextBool()
+        {
+            if (bitIndex == 32)
+            {
+                bitBuffer = NextUInt();
+                bitIndex = 1;
+
+                return (bitBuffer & 1) == 1;
+            }
+
+            bitIndex++;
+            return ((bitBuffer >>= 1) & 1) == 1;
+        }
+    }
+}

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

@@ -0,0 +1,10 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Catch.Objects
+{
+    public class Banana : Fruit
+    {
+        public override FruitVisualRepresentation VisualRepresentation => FruitVisualRepresentation.Banana;
+    }
+}

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

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Catch.Objects
@@ -31,18 +30,12 @@ namespace osu.Game.Rulesets.Catch.Objects
                 AddNested(new Banana
                 {
                     Samples = Samples,
-                    StartTime = i,
-                    X = RNG.NextSingle()
+                    StartTime = i
                 });
         }
 
         public double EndTime => StartTime + Duration;
 
         public double Duration { get; set; }
-
-        public class Banana : Fruit
-        {
-            public override FruitVisualRepresentation VisualRepresentation => FruitVisualRepresentation.Banana;
-        }
     }
 }

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

@@ -0,0 +1,17 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Catch.Judgements;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawable
+{
+    public class DrawableBanana : DrawableFruit
+    {
+        public DrawableBanana(Banana h)
+            : base(h)
+        {
+        }
+
+        protected override CatchJudgement CreateJudgement() => new CatchBananaJudgement();
+    }
+}

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

@@ -5,9 +5,7 @@ using System;
 using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawable
 {
@@ -24,15 +22,11 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
 
             InternalChild = bananaContainer = new Container { RelativeSizeAxes = Axes.Both };
 
-            foreach (var b in s.NestedHitObjects.Cast<BananaShower.Banana>())
+            foreach (var b in s.NestedHitObjects.Cast<Banana>())
                 AddNested(getVisualRepresentation?.Invoke(b));
         }
 
-        protected override void CheckForJudgements(bool userTriggered, double timeOffset)
-        {
-            if (timeOffset >= 0)
-                AddJudgement(new Judgement { Result = NestedHitObjects.Cast<DrawableCatchHitObject>().Any(n => n.Judgements.Any(j => j.IsHit)) ? HitResult.Perfect : HitResult.Miss });
-        }
+        protected override bool ProvidesJudgement => false;
 
         protected override void AddNested(DrawableHitObject h)
         {

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

@@ -2,14 +2,14 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using OpenTK;
+using OpenTK.Graphics;
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
-using OpenTK;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using OpenTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawable
 {
@@ -58,9 +58,15 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
             if (CheckPosition == null) return;
 
             if (timeOffset >= 0)
-                AddJudgement(new Judgement { Result = CheckPosition.Invoke(HitObject) ? HitResult.Perfect : HitResult.Miss });
+            {
+                var judgement = CreateJudgement();
+                judgement.Result = CheckPosition.Invoke(HitObject) ? HitResult.Perfect : HitResult.Miss;
+                AddJudgement(judgement);
+            }
         }
 
+        protected virtual CatchJudgement CreateJudgement() => new CatchJudgement();
+
         protected override void SkinChanged(ISkinSource skin, bool allowFallback)
         {
             base.SkinChanged(skin, allowFallback);

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

@@ -6,6 +6,7 @@ using osu.Framework.Graphics;
 using osu.Game.Rulesets.Catch.Objects.Drawable.Pieces;
 using OpenTK;
 using OpenTK.Graphics;
+using osu.Game.Rulesets.Catch.Judgements;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawable
 {
@@ -23,6 +24,8 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
             Masking = false;
         }
 
+        protected override CatchJudgement CreateJudgement() => new CatchDropletJudgement();
+
         [BackgroundDependencyLoader]
         private void load()
         {

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

@@ -0,0 +1,19 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
+using osu.Game.Rulesets.Catch.Judgements;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawable
+{
+    public class DrawableTinyDroplet : DrawableDroplet
+    {
+        public DrawableTinyDroplet(Droplet h)
+            : base(h)
+        {
+            Size = new Vector2((float)CatchHitObject.OBJECT_RADIUS) / 8;
+        }
+
+        protected override CatchJudgement CreateJudgement() => new CatchTinyDropletJudgement();
+    }
+}

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

@@ -42,7 +42,6 @@ namespace osu.Game.Rulesets.Catch.Objects
         protected override void CreateNestedHitObjects()
         {
             base.CreateNestedHitObjects();
-
             createTicks();
         }
 
@@ -78,6 +77,13 @@ namespace osu.Game.Rulesets.Catch.Objects
 
                     double time = spanStartTime + timeProgress * spanDuration;
 
+                    if (LegacyLastTickOffset != null)
+                    {
+                        // If we're the last tick, apply the legacy offset
+                        if (span == this.SpanCount() - 1 && d + tickDistance > length)
+                            time = Math.Max(StartTime + Duration / 2, time - LegacyLastTickOffset.Value);
+                    }
+
                     double tinyTickInterval = time - lastDropletTime;
                     while (tinyTickInterval > 100)
                         tinyTickInterval /= 2;
@@ -124,9 +130,6 @@ namespace osu.Game.Rulesets.Catch.Objects
                     X = X + Curve.PositionAt(reversed ? 0 : 1).X / CatchPlayfield.BASE_WIDTH
                 });
             }
-
-            if (NestedHitObjects.LastOrDefault() is IHasComboInformation lastNested)
-                lastNested.LastInCombo = LastInCombo;
         }
 
         public double EndTime => StartTime + this.SpanCount() * Curve.Distance / Velocity;
@@ -156,5 +159,7 @@ namespace osu.Game.Rulesets.Catch.Objects
             get { return Curve.CurveType; }
             set { Curve.CurveType = value; }
         }
+
+        public double? LegacyLastTickOffset { get; set; }
     }
 }

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

@@ -56,7 +56,7 @@ namespace osu.Game.Rulesets.Catch.Replays
                     return;
                 }
 
-                if (h is BananaShower.Banana)
+                if (h is Banana)
                 {
                     // auto bananas unrealistically warp to catch 100% combo.
                     Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
@@ -105,7 +105,7 @@ namespace osu.Game.Rulesets.Catch.Replays
                 {
                     switch (nestedObj)
                     {
-                        case BananaShower.Banana _:
+                        case Banana _:
                         case TinyDroplet _:
                         case Droplet _:
                         case Fruit _:

osu.Game.Rulesets.Catch/Resources/Testing/Beatmaps/spinner-and-circles-expected-conversion.json

@@ -0,0 +1,65 @@
+{
+    "Mappings": [{
+            "StartTime": 2589,
+            "Objects": [{
+                "StartTime": 2589,
+                "Position": 256
+            }]
+        },
+        {
+            "StartTime": 2915,
+            "Objects": [{
+                    "StartTime": 2915,
+                    "Position": 65
+                },
+                {
+                    "StartTime": 2916,
+                    "Position": 482
+                }
+            ]
+        },
+        {
+            "StartTime": 3078,
+            "Objects": [{
+                    "StartTime": 3078,
+                    "Position": 164
+                },
+                {
+                    "StartTime": 3079,
+                    "Position": 315
+                }
+            ]
+        },
+        {
+            "StartTime": 3241,
+            "Objects": [{
+                    "StartTime": 3241,
+                    "Position": 145
+                },
+                {
+                    "StartTime": 3242,
+                    "Position": 159
+                }
+            ]
+        },
+        {
+            "StartTime": 3404,
+            "Objects": [{
+                    "StartTime": 3404,
+                    "Position": 310
+                },
+                {
+                    "StartTime": 3405,
+                    "Position": 441
+                }
+            ]
+        },
+        {
+            "StartTime": 5197,
+            "Objects": [{
+                "StartTime": 5197,
+                "Position": 256
+            }]
+        }
+    ]
+}

osu.Game.Rulesets.Catch/Resources/Testing/Beatmaps/spinner-and-circles.osu

@@ -0,0 +1,24 @@
+osu file format v14
+
+[General]
+StackLeniency: 0.7
+Mode: 2
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:2
+OverallDifficulty:5
+ApproachRate:8
+SliderMultiplier:1.4
+SliderTickRate:4
+
+[TimingPoints]
+2589,326.086956521739,4,2,1,70,1,0
+
+[HitObjects]
+256,192,2589,5,0,0:0:0:0:
+256,192,2915,12,0,2916,0:0:0:0:
+256,192,3078,12,0,3079,0:0:0:0:
+256,192,3241,12,0,3242,0:0:0:0:
+256,192,3404,12,0,3405,0:0:0:0:
+256,192,5197,5,0,0:0:0:0:

osu.Game.Rulesets.Catch/Resources/Testing/Beatmaps/spinner-expected-conversion.json

@@ -0,0 +1,74 @@
+{
+    "Mappings": [{
+        "StartTime": 18500,
+        "Objects": [{
+                "StartTime": 18500,
+                "Position": 65
+            },
+            {
+                "StartTime": 18559,
+                "Position": 482
+            },
+            {
+                "StartTime": 18618,
+                "Position": 164
+            },
+            {
+                "StartTime": 18678,
+                "Position": 315
+            },
+            {
+                "StartTime": 18737,
+                "Position": 145
+            },
+            {
+                "StartTime": 18796,
+                "Position": 159
+            },
+            {
+                "StartTime": 18856,
+                "Position": 310
+            },
+            {
+                "StartTime": 18915,
+                "Position": 441
+            },
+            {
+                "StartTime": 18975,
+                "Position": 428
+            },
+            {
+                "StartTime": 19034,
+                "Position": 243
+            },
+            {
+                "StartTime": 19093,
+                "Position": 422
+            },
+            {
+                "StartTime": 19153,
+                "Position": 481
+            },
+            {
+                "StartTime": 19212,
+                "Position": 104
+            },
+            {
+                "StartTime": 19271,
+                "Position": 473
+            },
+            {
+                "StartTime": 19331,
+                "Position": 135
+            },
+            {
+                "StartTime": 19390,
+                "Position": 360
+            },
+            {
+                "StartTime": 19450,
+                "Position": 123
+            }
+        ]
+    }]
+}

osu.Game.Rulesets.Catch/Resources/Testing/Beatmaps/spinner.osu

@@ -0,0 +1,20 @@
+osu file format v14
+
+[General]
+Mode: 2
+
+[Difficulty]
+HPDrainRate:6
+CircleSize:4
+OverallDifficulty:7
+ApproachRate:8.3
+SliderMultiplier:1.6
+SliderTickRate:1
+
+[TimingPoints]
+500,500,4,2,1,50,1,0
+13426,-100,4,3,1,45,0,0
+14884,-100,4,2,1,50,0,0
+
+[HitObjects]
+256,192,18500,12,0,19450,0:0:0:0:

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

@@ -1,10 +1,12 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
 using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 
@@ -17,28 +19,57 @@ namespace osu.Game.Rulesets.Catch.Scoring
         {
         }
 
+        private float hpDrainRate;
+
         protected override void SimulateAutoplay(Beatmap<CatchHitObject> beatmap)
         {
+            hpDrainRate = beatmap.BeatmapInfo.BaseDifficulty.DrainRate;
+
             foreach (var obj in beatmap.HitObjects)
             {
                 switch (obj)
                 {
                     case JuiceStream stream:
-                        foreach (var _ in stream.NestedHitObjects.Cast<CatchHitObject>())
-                            AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
+                        foreach (var nestedObject in stream.NestedHitObjects)
+                            switch (nestedObject)
+                            {
+                                case TinyDroplet _:
+                                    AddJudgement(new CatchTinyDropletJudgement { Result = HitResult.Perfect });
+                                    break;
+                                case Droplet _:
+                                    AddJudgement(new CatchDropletJudgement { Result = HitResult.Perfect });
+                                    break;
+                                case Fruit _:
+                                    AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
+                                    break;
+                            }
                         break;
                     case BananaShower shower:
                         foreach (var _ in shower.NestedHitObjects.Cast<CatchHitObject>())
-                            AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
-                        AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
+                            AddJudgement(new CatchBananaJudgement { Result = HitResult.Perfect });
                         break;
                     case Fruit _:
                         AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
                         break;
                 }
             }
+        }
 
-            base.SimulateAutoplay(beatmap);
+        private const double harshness = 0.01;
+
+        protected override void OnNewJudgement(Judgement judgement)
+        {
+            base.OnNewJudgement(judgement);
+
+            if (judgement.Result == HitResult.Miss)
+            {
+                if (!judgement.IsBonus)
+                    Health.Value -= hpDrainRate * (harshness * 2);
+                return;
+            }
+
+            if (judgement is CatchJudgement catchJudgement)
+                Health.Value += Math.Max(catchJudgement.HealthIncrease - hpDrainRate, 0) * harshness;
         }
     }
 }

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

@@ -38,14 +38,16 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             switch (h)
             {
+                case Banana banana:
+                    return new DrawableBanana(banana);
                 case Fruit fruit:
                     return new DrawableFruit(fruit);
                 case JuiceStream stream:
                     return new DrawableJuiceStream(stream, GetVisualRepresentation);
-                case BananaShower banana:
-                    return new DrawableBananaShower(banana, GetVisualRepresentation);
+                case BananaShower shower:
+                    return new DrawableBananaShower(shower, GetVisualRepresentation);
                 case TinyDroplet tiny:
-                    return new DrawableDroplet(tiny) { Scale = new Vector2(0.5f) };
+                    return new DrawableTinyDroplet(tiny);
                 case Droplet droplet:
                     return new DrawableDroplet(droplet);
             }

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

@@ -11,6 +11,7 @@ using osu.Framework.Graphics.Textures;
 using osu.Framework.Input.Bindings;
 using osu.Framework.MathUtils;
 using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawable;
 using osu.Game.Rulesets.Catch.Replays;
@@ -78,12 +79,11 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 if (!fruit.StaysOnPlate)
                     runAfterLoaded(() => MovableCatcher.Explode(caughtFruit));
-
             }
 
             if (fruit.HitObject.LastInCombo)
             {
-                if (judgement.IsHit)
+                if (((CatchJudgement)judgement).ShouldExplode)
                     runAfterLoaded(() => MovableCatcher.Explode());
                 else
                     MovableCatcher.Drop();

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

@@ -12,7 +12,8 @@ using osu.Game.Tests.Beatmaps;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
-    internal class ManiaBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
+    [TestFixture]
+    public class ManiaBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
@@ -36,7 +37,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         protected override Ruleset CreateRuleset() => new ManiaRuleset();
     }
 
-    internal struct ConvertValue : IEquatable<ConvertValue>
+    public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
         /// A sane value to account for osu!stable using ints everwhere.

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

@@ -69,7 +69,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
                 obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                columns[i].Add(new DrawableNote(obj, columns[i].Action));
+                columns[i].Add(new DrawableNote(obj));
             }
         }
 
@@ -80,7 +80,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
                 obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                columns[i].Add(new DrawableHoldNote(obj, columns[i].Action));
+                columns[i].Add(new DrawableHoldNote(obj));
             }
         }
 
@@ -92,7 +92,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 Origin = Anchor.Centre,
                 Height = 0.85f,
                 AccentColour = Color4.OrangeRed,
-                Action = action,
+                Action = { Value = action },
                 VisibleTimeRange = { Value = 2000 }
             };
 

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

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -63,7 +64,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 AutoSizeAxes = Axes.Both,
                 Child = new NoteContainer(direction, $"note, scrolling {direction.ToString().ToLower()}")
                 {
-                    Child = new DrawableNote(note, ManiaAction.Key1) { AccentColour = Color4.OrangeRed }
+                    Child = new DrawableNote(note) { AccentColour = Color4.OrangeRed }
                 }
             };
         }
@@ -78,7 +79,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 AutoSizeAxes = Axes.Both,
                 Child = new NoteContainer(direction, $"hold note, scrolling {direction.ToString().ToLower()}")
                 {
-                    Child = new DrawableHoldNote(note, ManiaAction.Key1)
+                    Child = new DrawableHoldNote(note)
                     {
                         RelativeSizeAxes = Axes.Both,
                         AccentColour = Color4.OrangeRed,
@@ -136,6 +137,13 @@ namespace osu.Game.Rulesets.Mania.Tests
                 };
             }
 
+            protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+            {
+                var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+                dependencies.CacheAs<IBindable<ManiaAction>>(new Bindable<ManiaAction>());
+                return dependencies;
+            }
+
             protected override void Update()
             {
                 base.Update();

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

@@ -65,7 +65,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
                     obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                    stage.Add(new DrawableNote(obj, stage.Columns[i].Action));
+                    stage.Add(new DrawableNote(obj));
                 }
             }
         }
@@ -79,7 +79,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                     var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
                     obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
 
-                    stage.Add(new DrawableHoldNote(obj, stage.Columns[i].Action));
+                    stage.Add(new DrawableHoldNote(obj));
                 }
             }
         }

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

@@ -8,6 +8,7 @@ namespace osu.Game.Rulesets.Mania.Judgements
     public class HoldNoteJudgement : ManiaJudgement
     {
         public override bool AffectsCombo => false;
+
         protected override int NumericResultFor(HitResult result) => 0;
     }
 }

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

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

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

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

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

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

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

@@ -7,6 +7,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.UI.Components;
@@ -19,21 +21,7 @@ namespace osu.Game.Rulesets.Mania.UI
         private const float column_width = 45;
         private const float special_column_width = 70;
 
-        private ManiaAction action;
-
-        public ManiaAction Action
-        {
-            get => action;
-            set
-            {
-                if (action == value)
-                    return;
-                action = value;
-
-                background.Action = value;
-                keyArea.Action = value;
-            }
-        }
+        public readonly Bindable<ManiaAction> Action = new Bindable<ManiaAction>();
 
         private readonly ColumnBackground background;
         private readonly ColumnKeyArea keyArea;
@@ -130,6 +118,13 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
+        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        {
+            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies.CacheAs<IBindable<ManiaAction>>(Action);
+            return dependencies;
+        }
+
         /// <summary>
         /// Adds a DrawableHitObject to this Playfield.
         /// </summary>

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

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

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

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

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

@@ -101,17 +101,15 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected override DrawableHitObject<ManiaHitObject> GetVisualRepresentation(ManiaHitObject h)
         {
-            ManiaAction action = Playfield.Columns.ElementAt(h.Column).Action;
-
-            var holdNote = h as HoldNote;
-            if (holdNote != null)
-                return new DrawableHoldNote(holdNote, action);
-
-            var note = h as Note;
-            if (note != null)
-                return new DrawableNote(note, action);
-
-            return null;
+            switch (h)
+            {
+                case HoldNote holdNote:
+                    return new DrawableHoldNote(holdNote);
+                case Note note:
+                    return new DrawableNote(note);
+                default:
+                    return null;
+            }
         }
 
         protected override Vector2 PlayfieldArea => new Vector2(1, 0.8f);

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

@@ -127,7 +127,7 @@ namespace osu.Game.Rulesets.Mania.UI
                 var column = new Column(direction)
                 {
                     IsSpecial = isSpecial,
-                    Action = isSpecial ? specialColumnStartAction++ : normalColumnStartAction++
+                    Action = { Value = isSpecial ? specialColumnStartAction++ : normalColumnStartAction++ }
                 };
 
                 AddColumn(column);

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

@@ -8,17 +8,19 @@ using osu.Framework.MathUtils;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Tests.Beatmaps;
-using OpenTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
-    internal class OsuBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
+    [TestFixture]
+    public class OsuBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Osu";
 
         [TestCase("basic")]
         [TestCase("colinear-perfect-curve")]
+        [TestCase("slider-ticks")]
         public new void Test(string name)
         {
             base.Test(name);
@@ -26,24 +28,30 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)
         {
-            var startPosition = (hitObject as IHasPosition)?.Position ?? new Vector2(256, 192);
-            var endPosition = (hitObject as Slider)?.EndPosition ?? startPosition;
-
-            yield return new ConvertValue
+            switch (hitObject)
             {
-                StartTime = hitObject.StartTime,
-                EndTime = (hitObject as IHasEndTime)?.EndTime ?? hitObject.StartTime,
-                StartX = startPosition.X,
-                StartY = startPosition.Y,
-                EndX = endPosition.X,
-                EndY = endPosition.Y
+                case Slider slider:
+                    foreach (var nested in slider.NestedHitObjects)
+                        yield return createConvertValue(nested);
+                    break;
+                default:
+                    yield return createConvertValue(hitObject);
+                    break;
+            }
+
+            ConvertValue createConvertValue(HitObject obj) => new ConvertValue
+            {
+                StartTime = obj.StartTime,
+                EndTime = (obj as IHasEndTime)?.EndTime ?? obj.StartTime,
+                X = (obj as IHasPosition)?.X ?? OsuPlayfield.BASE_SIZE.X / 2,
+                Y = (obj as IHasPosition)?.Y ?? OsuPlayfield.BASE_SIZE.Y / 2,
             };
         }
 
         protected override Ruleset CreateRuleset() => new OsuRuleset();
     }
 
-    internal struct ConvertValue : IEquatable<ConvertValue>
+    public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
         /// A sane value to account for osu!stable using ints everwhere.
@@ -52,17 +60,13 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         public double StartTime;
         public double EndTime;
-        public float StartX;
-        public float StartY;
-        public float EndX;
-        public float EndY;
+        public float X;
+        public float Y;
 
         public bool Equals(ConvertValue other)
-            => Precision.AlmostEquals(StartTime, other.StartTime)
+            => Precision.AlmostEquals(StartTime, other.StartTime, conversion_lenience)
                && Precision.AlmostEquals(EndTime, other.EndTime, conversion_lenience)
-               && Precision.AlmostEquals(StartX, other.StartX)
-               && Precision.AlmostEquals(StartY, other.StartY, conversion_lenience)
-               && Precision.AlmostEquals(EndX, other.EndX, conversion_lenience)
-               && Precision.AlmostEquals(EndY, other.EndY, conversion_lenience);
+               && Precision.AlmostEquals(X, other.X, conversion_lenience)
+               && Precision.AlmostEquals(Y, other.Y, conversion_lenience);
     }
 }

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

@@ -27,6 +27,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
             var endTimeData = original as IHasEndTime;
             var positionData = original as IHasPosition;
             var comboData = original as IHasCombo;
+            var legacyOffset = original as IHasLegacyLastTickOffset;
 
             if (curveData != null)
             {
@@ -40,7 +41,8 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                     RepeatSamples = curveData.RepeatSamples,
                     RepeatCount = curveData.RepeatCount,
                     Position = positionData?.Position ?? Vector2.Zero,
-                    NewCombo = comboData?.NewCombo ?? false
+                    NewCombo = comboData?.NewCombo ?? false,
+                    LegacyLastTickOffset = legacyOffset?.LegacyLastTickOffset
                 };
             }
             else if (endTimeData != null)

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

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

osu.Game.Rulesets.Osu/Judgements/OsuJudgement.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using OpenTK;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
@@ -12,11 +11,6 @@ namespace osu.Game.Rulesets.Osu.Judgements
     {
         public override HitResult MaxResult => HitResult.Great;
 
-        /// <summary>
-        /// The positional hit offset.
-        /// </summary>
-        public Vector2 PositionOffset;
-
         protected override int NumericResultFor(HitResult result)
         {
             switch (result)

osu.Game.Rulesets.Osu/Judgements/OsuSliderTailJudgement.cs

@@ -8,6 +8,7 @@ namespace osu.Game.Rulesets.Osu.Judgements
     public class OsuSliderTailJudgement : OsuJudgement
     {
         public override bool AffectsCombo => false;
+
         protected override int NumericResultFor(HitResult result) => 0;
     }
 }

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

@@ -93,7 +93,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             AddJudgement(new OsuJudgement
             {
                 Result = result,
-                PositionOffset = Vector2.Zero //todo: set to correct value
             });
         }
 

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

@@ -93,6 +93,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 base.AccentColour = value;
                 Body.AccentColour = AccentColour;
                 Ball.AccentColour = AccentColour;
+                if (HasNestedHitObjects)
+                    foreach (var drawableHitObject in NestedHitObjects)
+                        drawableHitObject.AccentColour = AccentColour;
             }
         }
 

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

@@ -54,9 +54,9 @@ namespace osu.Game.Rulesets.Osu.Objects
 
         public virtual bool NewCombo { get; set; }
 
-        public int IndexInCurrentCombo { get; set; }
+        public virtual int IndexInCurrentCombo { get; set; }
 
-        public int ComboIndex { get; set; }
+        public virtual int ComboIndex { get; set; }
 
         public bool LastInCombo { get; set; }
 

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
 using OpenTK;
 using osu.Game.Rulesets.Objects.Types;
 using System.Collections.Generic;
@@ -25,6 +26,28 @@ namespace osu.Game.Rulesets.Osu.Objects
         public Vector2 StackedPositionAt(double t) => StackedPosition + this.CurvePositionAt(t);
         public override Vector2 EndPosition => Position + this.CurvePositionAt(1);
 
+        public override int ComboIndex
+        {
+            get => base.ComboIndex;
+            set
+            {
+                base.ComboIndex = value;
+                foreach (var n in NestedHitObjects.OfType<IHasComboInformation>())
+                    n.ComboIndex = value;
+            }
+        }
+
+        public override int IndexInCurrentCombo
+        {
+            get => base.IndexInCurrentCombo;
+            set
+            {
+                base.IndexInCurrentCombo = value;
+                foreach (var n in NestedHitObjects.OfType<IHasComboInformation>())
+                    n.IndexInCurrentCombo = value;
+            }
+        }
+
         public SliderCurve Curve { get; } = new SliderCurve();
 
         public List<Vector2> ControlPoints
@@ -45,6 +68,8 @@ namespace osu.Game.Rulesets.Osu.Objects
             set { Curve.Distance = value; }
         }
 
+        public double? LegacyLastTickOffset { get; set; }
+
         /// <summary>
         /// The position of the cursor at the point of completion of this <see cref="Slider"/> if it was hit
         /// with as few movements as possible. This is set and used by difficulty calculation.
@@ -91,6 +116,9 @@ namespace osu.Game.Rulesets.Osu.Objects
             createSliderEnds();
             createTicks();
             createRepeatPoints();
+
+            if (LegacyLastTickOffset != null)
+                TailCircle.StartTime = Math.Max(StartTime + Duration / 2, TailCircle.StartTime - LegacyLastTickOffset.Value);
         }
 
         private void createSliderEnds()
@@ -141,7 +169,8 @@ namespace osu.Game.Rulesets.Osu.Objects
                     var distanceProgress = d / length;
                     var timeProgress = reversed ? 1 - distanceProgress : distanceProgress;
 
-                    var firstSample = Samples.FirstOrDefault(s => s.Name == SampleInfo.HIT_NORMAL) ?? Samples.FirstOrDefault(); // TODO: remove this when guaranteed sort is present for samples (https://github.com/ppy/osu/issues/1933)
+                    var firstSample = Samples.FirstOrDefault(s => s.Name == SampleInfo.HIT_NORMAL)
+                                      ?? Samples.FirstOrDefault(); // TODO: remove this when guaranteed sort is present for samples (https://github.com/ppy/osu/issues/1933)
                     var sampleList = new List<SampleInfo>();
 
                     if (firstSample != null)

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

@@ -6,6 +6,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
 using System;
 using System.Collections.Generic;
+using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Users;
 
@@ -18,7 +19,7 @@ namespace osu.Game.Rulesets.Osu.Replays
         /// <summary>
         /// Constants (for spinners).
         /// </summary>
-        protected static readonly Vector2 SPINNER_CENTRE = new Vector2(256, 192);
+        protected static readonly Vector2 SPINNER_CENTRE = OsuPlayfield.BASE_SIZE / 2;
         protected const float SPIN_RADIUS = 50;
 
         /// <summary>

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

@@ -1,124 +1,256 @@
 {
     "Mappings": [{
-            "StartTime": 500,
-            "Objects": [{
-                "StartTime": 500,
-                "EndTime": 2500,
-                "StartX": 96,
-                "StartY": 192,
-                "EndX": 96,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 3000,
-            "Objects": [{
-                "StartTime": 3000,
-                "EndTime": 4000,
-                "StartX": 256,
-                "StartY": 192,
-                "EndX": 256,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 4500,
-            "Objects": [{
-                "StartTime": 4500,
-                "EndTime": 5500,
-                "StartX": 256,
-                "StartY": 192,
-                "EndX": 256,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 6000,
-            "Objects": [{
-                "StartTime": 6000,
-                "EndTime": 6500,
-                "StartX": 256,
-                "StartY": 192,
-                "EndX": 256,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 7000,
-            "Objects": [{
-                "StartTime": 7000,
-                "EndTime": 8000,
-                "StartX": 256,
-                "StartY": 128,
-                "EndX": 256,
-                "EndY": 128
-            }]
-        },
-        {
-            "StartTime": 8500,
-            "Objects": [{
-                "StartTime": 8500,
-                "EndTime": 10999,
-                "StartX": 32,
-                "StartY": 192,
-                "EndX": 508.166229,
-                "EndY": 153.299271
-            }]
-        },
-        {
-            "StartTime": 11500,
-            "Objects": [{
-                "StartTime": 11500,
-                "EndTime": 12000,
-                "StartX": 256,
-                "StartY": 192,
-                "EndX": 256,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 12500,
-            "Objects": [{
-                "StartTime": 12500,
-                "EndTime": 16500,
-                "StartX": 512,
-                "StartY": 320,
-                "EndX": 291.1977,
-                "EndY": 40.799427
-            }]
-        },
-        {
-            "StartTime": 17000,
-            "Objects": [{
-                "StartTime": 17000,
-                "EndTime": 18000,
-                "StartX": 256,
-                "StartY": 256,
-                "EndX": 256,
-                "EndY": 256
-            }]
-        },
-        {
-            "StartTime": 18500,
-            "Objects": [{
-                "StartTime": 18500,
-                "EndTime": 19450,
-                "StartX": 256,
-                "StartY": 192,
-                "EndX": 256,
-                "EndY": 192
-            }]
-        },
-        {
-            "StartTime": 19875,
-            "Objects": [{
-                "StartTime": 19875,
-                "EndTime": 23874,
-                "StartX": 216,
-                "StartY": 231,
-                "EndX": 408.720825,
-                "EndY": 339.810455
-            }]
-        }
-    ]
+        "StartTime": 500.0,
+        "Objects": [{
+            "StartTime": 500.0,
+            "EndTime": 500.0,
+            "X": 96.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 1000.0,
+            "EndTime": 1000.0,
+            "X": 256.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 1500.0,
+            "EndTime": 1500.0,
+            "X": 416.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 2000.0,
+            "EndTime": 2000.0,
+            "X": 256.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 2464.0,
+            "EndTime": 2464.0,
+            "X": 96.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 3000.0,
+        "Objects": [{
+            "StartTime": 3000.0,
+            "EndTime": 4000.0,
+            "X": 256.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 4500.0,
+        "Objects": [{
+            "StartTime": 4500.0,
+            "EndTime": 5500.0,
+            "X": 256.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 6000.0,
+        "Objects": [{
+            "StartTime": 6000.0,
+            "EndTime": 6500.0,
+            "X": 256.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 7000.0,
+        "Objects": [{
+            "StartTime": 7000.0,
+            "EndTime": 7000.0,
+            "X": 256.0,
+            "Y": 128.0
+        }, {
+            "StartTime": 7250.0,
+            "EndTime": 7250.0,
+            "X": 336.0,
+            "Y": 128.0
+        }, {
+            "StartTime": 7500.0,
+            "EndTime": 7500.0,
+            "X": 256.0,
+            "Y": 128.0
+        }, {
+            "StartTime": 7750.0,
+            "EndTime": 7750.0,
+            "X": 336.0,
+            "Y": 128.0
+        }, {
+            "StartTime": 7964.0,
+            "EndTime": 7964.0,
+            "X": 256.0,
+            "Y": 128.0
+        }]
+    }, {
+        "StartTime": 8500.0,
+        "Objects": [{
+            "StartTime": 8500.0,
+            "EndTime": 8500.0,
+            "X": 32.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 9000.0,
+            "EndTime": 9000.0,
+            "X": 101.81015,
+            "Y": 326.4915
+        }, {
+            "StartTime": 9500.0,
+            "EndTime": 9500.0,
+            "X": 237.2304,
+            "Y": 276.282928
+        }, {
+            "StartTime": 10000.0,
+            "EndTime": 10000.0,
+            "X": 270.339874,
+            "Y": 121.1423
+        }, {
+            "StartTime": 10500.0,
+            "EndTime": 10500.0,
+            "X": 401.0588,
+            "Y": 49.1515045
+        }, {
+            "StartTime": 10964.0,
+            "EndTime": 10964.0,
+            "X": 508.166229,
+            "Y": 153.299271
+        }]
+    }, {
+        "StartTime": 11500.0,
+        "Objects": [{
+            "StartTime": 11500.0,
+            "EndTime": 12000.0,
+            "X": 256.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 12500.0,
+        "Objects": [{
+            "StartTime": 12500.0,
+            "EndTime": 12500.0,
+            "X": 512.0,
+            "Y": 320.0
+        }, {
+            "StartTime": 13000.0,
+            "EndTime": 13000.0,
+            "X": 353.235535,
+            "Y": 300.154449
+        }, {
+            "StartTime": 13500.0,
+            "EndTime": 13500.0,
+            "X": 194.471069,
+            "Y": 280.3089
+        }, {
+            "StartTime": 14000.0,
+            "EndTime": 14000.0,
+            "X": 35.7066345,
+            "Y": 260.463318
+        }, {
+            "StartTime": 14500.0,
+            "EndTime": 14500.0,
+            "X": 118.370323,
+            "Y": 219.009277
+        }, {
+            "StartTime": 15000.0,
+            "EndTime": 15000.0,
+            "X": 271.087128,
+            "Y": 171.285278
+        }, {
+            "StartTime": 15500.0,
+            "EndTime": 15500.0,
+            "X": 423.803925,
+            "Y": 123.561279
+        }, {
+            "StartTime": 16000.0,
+            "EndTime": 16000.0,
+            "X": 446.420532,
+            "Y": 79.60513
+        }, {
+            "StartTime": 16464.0,
+            "EndTime": 16464.0,
+            "X": 291.1977,
+            "Y": 40.799427
+        }]
+    }, {
+        "StartTime": 17000.0,
+        "Objects": [{
+            "StartTime": 17000.0,
+            "EndTime": 17000.0,
+            "X": 256.0,
+            "Y": 256.0
+        }, {
+            "StartTime": 17250.0,
+            "EndTime": 17250.0,
+            "X": 176.0,
+            "Y": 256.0
+        }, {
+            "StartTime": 17500.0,
+            "EndTime": 17500.0,
+            "X": 256.0,
+            "Y": 256.0
+        }, {
+            "StartTime": 17750.0,
+            "EndTime": 17750.0,
+            "X": 176.0,
+            "Y": 256.0
+        }, {
+            "StartTime": 17964.0,
+            "EndTime": 17964.0,
+            "X": 256.0,
+            "Y": 256.0
+        }]
+    }, {
+        "StartTime": 18500.0,
+        "Objects": [{
+            "StartTime": 18500.0,
+            "EndTime": 19450.0,
+            "X": 256.0,
+            "Y": 192.0
+        }]
+    }, {
+        "StartTime": 19875.0,
+        "Objects": [{
+            "StartTime": 19875.0,
+            "EndTime": 19875.0,
+            "X": 216.0,
+            "Y": 231.0
+        }, {
+            "StartTime": 20375.0,
+            "EndTime": 20375.0,
+            "X": 317.446747,
+            "Y": 171.345245
+        }, {
+            "StartTime": 20875.0,
+            "EndTime": 20875.0,
+            "X": 270.3294,
+            "Y": 310.4395
+        }, {
+            "StartTime": 21375.0,
+            "EndTime": 21375.0,
+            "X": 119.121056,
+            "Y": 322.8657
+        }, {
+            "StartTime": 21875.0,
+            "EndTime": 21875.0,
+            "X": 124.28746,
+            "Y": 165.224731
+        }, {
+            "StartTime": 22375.0,
+            "EndTime": 22375.0,
+            "X": 240.4715,
+            "Y": 62.65587
+        }, {
+            "StartTime": 22875.0,
+            "EndTime": 22875.0,
+            "X": 398.054047,
+            "Y": 39.064167
+        }, {
+            "StartTime": 23375.0,
+            "EndTime": 23375.0,
+            "X": 439.749878,
+            "Y": 183.668091
+        }, {
+            "StartTime": 23839.0,
+            "EndTime": 23839.0,
+            "X": 408.720825,
+            "Y": 339.810455
+        }]
+    }]
 }

osu.Game.Rulesets.Osu/Resources/Testing/Beatmaps/colinear-perfect-curve-expected-conversion.json

@@ -1,13 +1,16 @@
 {
-  "Mappings": [{
-    "StartTime": 118858,
-    "Objects": [{
-      "StartTime": 118858,
-      "EndTime": 119088,
-      "StartX": 219,
-      "StartY": 215,
-      "EndX": 239.6507,
-      "EndY": 29.1437378
+    "Mappings": [{
+        "StartTime": 118858.0,
+        "Objects": [{
+            "StartTime": 118858.0,
+            "EndTime": 118858.0,
+            "X": 219.0,
+            "Y": 215.0
+        }, {
+            "StartTime": 119052.0,
+            "EndTime": 119052.0,
+            "X": 239.6507,
+            "Y": 29.1437378
+        }]
     }]
-  }]
 }

osu.Game.Rulesets.Osu/Resources/Testing/Beatmaps/slider-ticks-expected-conversion.json

@@ -0,0 +1,331 @@
+{
+    "Mappings": [{
+        "StartTime": 500.0,
+        "Objects": [{
+            "StartTime": 500.0,
+            "EndTime": 500.0,
+            "X": 96.0,
+            "Y": 192.0
+        }, {
+            "StartTime": 624.0,
+            "EndTime": 624.0,
+            "X": 105.921242,
+            "Y": 192.0
+        }, {
+            "StartTime": 749.0,
+            "EndTime": 749.0,
+            "X": 115.922493,
+            "Y": 192.0
+        }, {
+            "StartTime": 874.0,
+            "EndTime": 874.0,
+            "X": 125.923737,
+            "Y": 192.0
+        }, {
+            "StartTime": 999.0,
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+        }, {
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+        }, {
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+            "X": 165.928741,
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+        }, {
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+            "EndTime": 1499.0,
+            "X": 175.93,
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+        }, {
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+            "EndTime": 1624.0,
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+            "X": 195.9325,
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+            "X": 215.935,
+            "Y": 192.0
+        }, {
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+            "EndTime": 2124.0,
+            "X": 225.936234,
+            "Y": 192.0
+        }, {
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+            "X": 235.9375,
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+        }, {
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+            "X": 245.938751,
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+        }, {
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+        }, {
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+            "X": 265.941223,
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+        }, {
+            "StartTime": 2749.0,
+            "EndTime": 2749.0,
+            "X": 275.9425,
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+        }, {
+            "StartTime": 2874.0,
+            "EndTime": 2874.0,
+            "X": 285.943756,
+            "Y": 192.0
+        }, {
+            "StartTime": 2999.0,
+            "EndTime": 2999.0,
+            "X": 295.945,
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+        }, {
+            "StartTime": 3124.0,
+            "EndTime": 3124.0,
+            "X": 305.946259,
+            "Y": 192.0
+        }, {
+            "StartTime": 3249.0,
+            "EndTime": 3249.0,
+            "X": 315.9475,
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+        }, {
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+            "X": 325.94873,
+            "Y": 192.0
+        }, {
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+            "X": 335.949982,
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+        }, {
+            "StartTime": 3624.0,
+            "EndTime": 3624.0,
+            "X": 345.951233,
+            "Y": 192.0
+        }, {
+            "StartTime": 3749.0,
+            "EndTime": 3749.0,
+            "X": 355.952484,
+            "Y": 192.0
+        }, {
+            "StartTime": 3874.0,
+            "EndTime": 3874.0,
+            "X": 365.953766,
+            "Y": 192.0
+        }, {
+            "StartTime": 3999.0,
+            "EndTime": 3999.0,
+            "X": 375.955,
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+        }, {
+            "StartTime": 4124.0,
+            "EndTime": 4124.0,
+            "X": 385.956238,
+            "Y": 192.0
+        }, {
+            "StartTime": 4249.0,
+            "EndTime": 4249.0,
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+        }, {
+            "StartTime": 4374.0,
+            "EndTime": 4374.0,
+            "X": 405.95874,
+            "Y": 192.0
+        }, {
+            "StartTime": 4499.0,
+            "EndTime": 4499.0,
+            "X": 415.960022,
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+        }, {
+            "StartTime": 4624.0,
+            "EndTime": 4624.0,
+            "X": 406.038757,
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+        }, {
+            "StartTime": 4749.0,
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+            "X": 396.0375,
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+        }, {
+            "StartTime": 4874.0,
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+            "X": 386.036255,
+            "Y": 192.0
+        }, {
+            "StartTime": 4999.0,
+            "EndTime": 4999.0,
+            "X": 376.035034,
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+        }, {
+            "StartTime": 5124.0,
+            "EndTime": 5124.0,
+            "X": 366.033752,
+            "Y": 192.0
+        }, {
+            "StartTime": 5249.0,
+            "EndTime": 5249.0,
+            "X": 356.0325,
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+        }, {
+            "StartTime": 5374.0,
+            "EndTime": 5374.0,
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+        }, {
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+            "EndTime": 5499.0,
+            "X": 336.030029,
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+        }, {
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+            "EndTime": 5624.0,
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+            "Y": 192.0
+        }, {
+            "StartTime": 5749.0,
+            "EndTime": 5749.0,
+            "X": 316.0275,
+            "Y": 192.0
+        }, {
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+            "EndTime": 5874.0,
+            "X": 306.026245,
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+        }, {
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+            "EndTime": 5999.0,
+            "X": 296.025,
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+        }, {
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+            "EndTime": 6124.0,
+            "X": 286.023773,
+            "Y": 192.0
+        }, {
+            "StartTime": 6249.0,
+            "EndTime": 6249.0,
+            "X": 276.022522,
+            "Y": 192.0
+        }, {
+            "StartTime": 6374.0,
+            "EndTime": 6374.0,
+            "X": 266.02124,
+            "Y": 192.0
+        }, {
+            "StartTime": 6499.0,
+            "EndTime": 6499.0,
+            "X": 256.02,
+            "Y": 192.0
+        }, {
+            "StartTime": 6624.0,
+            "EndTime": 6624.0,
+            "X": 246.018768,
+            "Y": 192.0
+        }, {
+            "StartTime": 6749.0,
+            "EndTime": 6749.0,
+            "X": 236.017517,
+            "Y": 192.0
+        }, {
+            "StartTime": 6874.0,
+            "EndTime": 6874.0,
+            "X": 226.016251,
+            "Y": 192.0
+        }, {
+            "StartTime": 6999.0,
+            "EndTime": 6999.0,
+            "X": 216.014984,
+            "Y": 192.0
+        }, {
+            "StartTime": 7124.0,
+            "EndTime": 7124.0,
+            "X": 206.013733,
+            "Y": 192.0
+        }, {
+            "StartTime": 7249.0,
+            "EndTime": 7249.0,
+            "X": 196.012512,
+            "Y": 192.0
+        }, {
+            "StartTime": 7374.0,
+            "EndTime": 7374.0,
+            "X": 186.011261,
+            "Y": 192.0
+        }, {
+            "StartTime": 7499.0,
+            "EndTime": 7499.0,
+            "X": 176.01,
+            "Y": 192.0
+        }, {
+            "StartTime": 7624.0,
+            "EndTime": 7624.0,
+            "X": 166.008728,
+            "Y": 192.0
+        }, {
+            "StartTime": 7749.0,
+            "EndTime": 7749.0,
+            "X": 156.0075,
+            "Y": 192.0
+        }, {
+            "StartTime": 7874.0,
+            "EndTime": 7874.0,
+            "X": 146.006256,
+            "Y": 192.0
+        }, {
+            "StartTime": 7999.0,
+            "EndTime": 7999.0,
+            "X": 136.005,
+            "Y": 192.0
+        }, {
+            "StartTime": 8124.0,
+            "EndTime": 8124.0,
+            "X": 126.003738,
+            "Y": 192.0
+        }, {
+            "StartTime": 8249.0,
+            "EndTime": 8249.0,
+            "X": 116.002518,
+            "Y": 192.0
+        }, {
+            "StartTime": 8374.0,
+            "EndTime": 8374.0,
+            "X": 106.001259,
+            "Y": 192.0
+        }, {
+            "StartTime": 8463.0,
+            "EndTime": 8463.0,
+            "X": 96.0,
+            "Y": 192.0
+        }]
+    }]
+}

osu.Game.Rulesets.Osu/Resources/Testing/Beatmaps/slider-ticks.osu

@@ -0,0 +1,20 @@
+osu file format v14
+
+[General]
+StackLeniency: 0.7
+
+[Difficulty]
+HPDrainRate:6
+CircleSize:4
+OverallDifficulty:7
+ApproachRate:8.3
+SliderMultiplier:0.400000005960464
+SliderTickRate:4
+
+[TimingPoints]
+500,500,4,2,1,50,1,0
+13426,-100,4,3,1,45,0,0
+14884,-100,4,2,1,50,0,0
+
+[HitObjects]
+96,192,500,6,0,L|416:192,2,320.000004768372

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

@@ -11,7 +11,6 @@ using osu.Game.Rulesets.Osu.Objects.Drawables.Connections;
 using osu.Game.Rulesets.UI;
 using System.Linq;
 using osu.Game.Rulesets.Judgements;
-using osu.Game.Rulesets.Osu.Judgements;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
@@ -75,7 +74,7 @@ namespace osu.Game.Rulesets.Osu.UI
             DrawableOsuJudgement explosion = new DrawableOsuJudgement(judgement, judgedObject)
             {
                 Origin = Anchor.Centre,
-                Position = ((OsuHitObject)judgedObject.HitObject).StackedEndPosition + ((OsuJudgement)judgement).PositionOffset
+                Position = ((OsuHitObject)judgedObject.HitObject).StackedEndPosition
             };
 
             judgementLayer.Add(explosion);

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

@@ -12,7 +12,8 @@ using osu.Game.Tests.Beatmaps;
 
 namespace osu.Game.Rulesets.Taiko.Tests
 {
-    internal class TaikoBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
+    [TestFixture]
+    public class TaikoBeatmapConversionTest : BeatmapConversionTest<ConvertValue>
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Taiko";
 
@@ -41,7 +42,7 @@ namespace osu.Game.Rulesets.Taiko.Tests
         protected override Ruleset CreateRuleset() => new TaikoRuleset();
     }
 
-    internal struct ConvertValue : IEquatable<ConvertValue>
+    public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
         /// A sane value to account for osu!stable using ints everwhere.

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

@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Taiko.UI
         private void loadBarLines()
         {
             TaikoHitObject lastObject = Beatmap.HitObjects[Beatmap.HitObjects.Count - 1];
-            double lastHitTime = 1 + (lastObject as IHasEndTime)?.EndTime ?? lastObject.StartTime;
+            double lastHitTime = 1 + ((lastObject as IHasEndTime)?.EndTime ?? lastObject.StartTime);
 
             var timingPoints = Beatmap.ControlPointInfo.TimingPoints.ToList();
 

osu.Game.Tests/Visual/TestCaseEditorSeekSnapping.cs

@@ -1,8 +1,7 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System;
-using System.Collections.Generic;
+using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -10,9 +9,6 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
-using osu.Game.Rulesets;
-using osu.Game.Rulesets.Edit;
-using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
 using OpenTK;
@@ -20,10 +16,9 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Tests.Visual
 {
+    [TestFixture]
     public class TestCaseEditorSeekSnapping : EditorClockTestCase
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[] { typeof(HitObjectComposer) };
-
         public TestCaseEditorSeekSnapping()
         {
             BeatDivisor.Value = 4;
@@ -56,22 +51,13 @@ namespace osu.Game.Tests.Visual
             Beatmap.Value = new TestWorkingBeatmap(testBeatmap);
 
             Child = new TimingPointVisualiser(testBeatmap, 5000) { Clock = Clock };
-
-            testSeekNoSnapping();
-            testSeekSnappingOnBeat();
-            testSeekSnappingInBetweenBeat();
-            testSeekForwardNoSnapping();
-            testSeekForwardSnappingOnBeat();
-            testSeekForwardSnappingFromInBetweenBeat();
-            testSeekBackwardSnappingOnBeat();
-            testSeekBackwardSnappingFromInBetweenBeat();
-            testSeekingWithFloatingPointBeatLength();
         }
 
         /// <summary>
         /// Tests whether time is correctly seeked without snapping.
         /// </summary>
-        private void testSeekNoSnapping()
+        [Test]
+        public void TestSeekNoSnapping()
         {
             reset();
 
@@ -94,7 +80,8 @@ namespace osu.Game.Tests.Visual
         /// Tests whether seeking to exact beat times puts us on the beat time.
         /// These are the white/yellow ticks on the graph.
         /// </summary>
-        private void testSeekSnappingOnBeat()
+        [Test]
+        public void TestSeekSnappingOnBeat()
         {
             reset();
 
@@ -117,9 +104,9 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests whether seeking to somewhere in the middle between beats puts us on the expected beats.
         /// For example, snapping between a white/yellow beat should put us on either the yellow or white, depending on which one we're closer too.
-        /// If
         /// </summary>
-        private void testSeekSnappingInBetweenBeat()
+        [Test]
+        public void TestSeekSnappingInBetweenBeat()
         {
             reset();
 
@@ -140,7 +127,8 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests that when seeking forward with no beat snapping, beats are never explicitly snapped to, nor the next timing point (if we've skipped it).
         /// </summary>
-        private void testSeekForwardNoSnapping()
+        [Test]
+        public void TestSeekForwardNoSnapping()
         {
             reset();
 
@@ -159,7 +147,8 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests that when seeking forward with beat snapping, all beats are snapped to and timing points are never skipped.
         /// </summary>
-        private void testSeekForwardSnappingOnBeat()
+        [Test]
+        public void TestSeekForwardSnappingOnBeat()
         {
             reset();
 
@@ -181,7 +170,8 @@ namespace osu.Game.Tests.Visual
         /// Tests that when seeking forward from in-between two beats, the next beat or timing point is snapped to, and no beats are skipped.
         /// This will also test being extremely close to the next beat/timing point, to ensure rounding is not an issue.
         /// </summary>
-        private void testSeekForwardSnappingFromInBetweenBeat()
+        [Test]
+        public void TestSeekForwardSnappingFromInBetweenBeat()
         {
             reset();
 
@@ -214,21 +204,20 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests that when seeking backward with no beat snapping, beats are never explicitly snapped to, nor the next timing point (if we've skipped it).
         /// </summary>
-        private void testSeekBackwardNoSnapping()
+        [Test]
+        public void TestSeekBackwardNoSnapping()
         {
             reset();
 
             AddStep("Seek(450)", () => Clock.Seek(450));
             AddStep("SeekBackward", () => Clock.SeekBackward());
-            AddAssert("Time = 425", () => Clock.CurrentTime == 425);
+            AddAssert("Time = 400", () => Clock.CurrentTime == 400);
             AddStep("SeekBackward", () => Clock.SeekBackward());
-            AddAssert("Time = 375", () => Clock.CurrentTime == 375);
+            AddAssert("Time = 350", () => Clock.CurrentTime == 350);
             AddStep("SeekBackward", () => Clock.SeekBackward());
-            AddAssert("Time = 325", () => Clock.CurrentTime == 325);
+            AddAssert("Time = 150", () => Clock.CurrentTime == 150);
             AddStep("SeekBackward", () => Clock.SeekBackward());
-            AddAssert("Time = 125", () => Clock.CurrentTime == 125);
-            AddStep("SeekBackward", () => Clock.SeekBackward());
-            AddAssert("Time = 25", () => Clock.CurrentTime == 25);
+            AddAssert("Time = 50", () => Clock.CurrentTime == 50);
             AddStep("SeekBackward", () => Clock.SeekBackward());
             AddAssert("Time = 0", () => Clock.CurrentTime == 0);
         }
@@ -236,7 +225,8 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests that when seeking backward with beat snapping, all beats are snapped to and timing points are never skipped.
         /// </summary>
-        private void testSeekBackwardSnappingOnBeat()
+        [Test]
+        public void TestSeekBackwardSnappingOnBeat()
         {
             reset();
 
@@ -259,7 +249,8 @@ namespace osu.Game.Tests.Visual
         /// Tests that when seeking backward from in-between two beats, the previous beat or timing point is snapped to, and no beats are skipped.
         /// This will also test being extremely close to the previous beat/timing point, to ensure rounding is not an issue.
         /// </summary>
-        private void testSeekBackwardSnappingFromInBetweenBeat()
+        [Test]
+        public void TestSeekBackwardSnappingFromInBetweenBeat()
         {
             reset();
 
@@ -280,7 +271,8 @@ namespace osu.Game.Tests.Visual
         /// <summary>
         /// Tests that there are no rounding issues when snapping to beats within a timing point with a floating-point beatlength.
         /// </summary>
-        private void testSeekingWithFloatingPointBeatLength()
+        [Test]
+        public void TestSeekingWithFloatingPointBeatLength()
         {
             reset();
 
@@ -288,7 +280,7 @@ namespace osu.Game.Tests.Visual
 
             AddStep("Seek(0)", () => Clock.Seek(0));
 
-            for (int i = 0; i < 20; i++)
+            for (int i = 0; i < 9; i++)
             {
                 AddStep("SeekForward, Snap", () =>
                 {
@@ -298,7 +290,7 @@ namespace osu.Game.Tests.Visual
                 AddAssert("Time > lastTime", () => Clock.CurrentTime > lastTime);
             }
 
-            for (int i = 0; i < 20; i++)
+            for (int i = 0; i < 9; i++)
             {
                 AddStep("SeekBackward, Snap", () =>
                 {
@@ -316,16 +308,6 @@ namespace osu.Game.Tests.Visual
             AddStep("Reset", () => Clock.Seek(0));
         }
 
-        private class TestHitObjectComposer : HitObjectComposer
-        {
-            public TestHitObjectComposer(Ruleset ruleset)
-                : base(ruleset)
-            {
-            }
-
-            protected override IReadOnlyList<ICompositionTool> CompositionTools => new ICompositionTool[0];
-        }
-
         private class TimingPointVisualiser : CompositeDrawable
         {
             private readonly double length;

osu.Game.Tests/Visual/TestCaseLeaderboard.cs

@@ -1,6 +1,8 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Scoring;
@@ -17,6 +19,12 @@ namespace osu.Game.Tests.Visual
     [Description("PlaySongSelect leaderboard")]
     public class TestCaseLeaderboard : OsuTestCase
     {
+        public override IReadOnlyList<Type> RequiredTypes => new[] {
+            typeof(Placeholder),
+            typeof(MessagePlaceholder),
+            typeof(RetrievalFailurePlaceholder),
+        };
+
         private RulesetStore rulesets;
 
         private readonly FailableLeaderboard leaderboard;

osu.Game.Tests/Visual/TestCaseLoadingAnimation.cs

@@ -0,0 +1,63 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using OpenTK.Graphics;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseLoadingAnimation : GridTestCase
+    {
+        public TestCaseLoadingAnimation()
+            : base(2, 2)
+        {
+            LoadingAnimation loading;
+
+            Cell(0).AddRange(new Drawable[]
+            {
+                new Box
+                {
+                    Colour = Color4.Black,
+                    RelativeSizeAxes = Axes.Both
+                },
+                loading = new LoadingAnimation()
+            });
+
+            loading.Show();
+
+            Cell(1).AddRange(new Drawable[]
+            {
+                new Box
+                {
+                    Colour = Color4.White,
+                    RelativeSizeAxes = Axes.Both
+                },
+                loading = new LoadingAnimation()
+            });
+
+            loading.Show();
+
+            Cell(2).AddRange(new Drawable[]
+            {
+                new Box
+                {
+                    Colour = Color4.Gray,
+                    RelativeSizeAxes = Axes.Both
+                },
+                loading = new LoadingAnimation()
+            });
+
+            loading.Show();
+
+            Cell(3).AddRange(new Drawable[]
+            {
+                loading = new LoadingAnimation()
+            });
+
+            Scheduler.AddDelayed(() => loading.ToggleVisibility(), 200, true);
+        }
+    }
+}

osu.Game/Beatmaps/BeatmapInfo.cs

@@ -66,8 +66,8 @@ namespace osu.Game.Beatmaps
 
         // General
         public int AudioLeadIn { get; set; }
-        public bool Countdown { get; set; }
-        public float StackLeniency { get; set; }
+        public bool Countdown { get; set; } = true;
+        public float StackLeniency { get; set; } = 0.7f;
         public bool SpecialStyle { get; set; }
 
         public int RulesetID { get; set; }

osu.Game/Beatmaps/BeatmapManager.cs

@@ -138,7 +138,7 @@ namespace osu.Game.Beatmaps
                 PostNotification?.Invoke(new SimpleNotification
                 {
                     Icon = FontAwesome.fa_superpowers,
-                    Text = "You gotta be a supporter to download for now 'yo"
+                    Text = "You gotta be an osu!supporter to download for now 'yo"
                 });
                 return;
             }

osu.Game/Beatmaps/BeatmapManager_WorkingBeatmap.cs

@@ -69,11 +69,22 @@ namespace osu.Game.Beatmaps
                 }
                 catch
                 {
-                    return new TrackVirtual();
+                    return null;
                 }
             }
 
-            protected override Waveform GetWaveform() => new Waveform(store.GetStream(getPathForFile(Metadata.AudioFile)));
+            protected override Waveform GetWaveform()
+            {
+                try
+                {
+                    var trackData = store.GetStream(getPathForFile(Metadata.AudioFile));
+                    return trackData == null ? null : new Waveform(trackData);
+                }
+                catch
+                {
+                    return null;
+                }
+            }
 
             protected override Storyboard GetStoryboard()
             {

osu.Game/Beatmaps/BeatmapProcessor.cs

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

osu.Game/Beatmaps/BeatmapSetInfo.cs

@@ -13,7 +13,13 @@ namespace osu.Game.Beatmaps
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int ID { get; set; }
 
-        public int? OnlineBeatmapSetID { get; set; }
+        private int? onlineBeatmapSetID;
+
+        public int? OnlineBeatmapSetID
+        {
+            get { return onlineBeatmapSetID; }
+            set { onlineBeatmapSetID = value > 0 ? value : null; }
+        }
 
         public BeatmapMetadata Metadata { get; set; }
 

osu.Game/Beatmaps/DummyWorkingBeatmap.cs

@@ -45,7 +45,7 @@ namespace osu.Game.Beatmaps
 
         protected override Texture GetBackground() => game?.Textures.Get(@"Backgrounds/bg4");
 
-        protected override Track GetTrack() => new TrackVirtual();
+        protected override Track GetTrack() => new TrackVirtual { Length = 1000 };
 
         private class DummyRulesetInfo : RulesetInfo
         {

osu.Game/Beatmaps/IBeatmapConverter.cs

@@ -7,6 +7,9 @@ using osu.Game.Rulesets.Objects;
 
 namespace osu.Game.Beatmaps
 {
+    /// <summary>
+    /// Provides functionality to convert a <see cref="IBeatmap"/> for a <see cref="Ruleset"/>.
+    /// </summary>
     public interface IBeatmapConverter
     {
         /// <summary>

osu.Game/Beatmaps/IBeatmapProcessor.cs

@@ -0,0 +1,40 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Beatmaps
+{
+    /// <summary>
+    /// Provides functionality to alter a <see cref="IBeatmap"/> after it has been converted.
+    /// </summary>
+    public interface IBeatmapProcessor
+    {
+        /// <summary>
+        /// The <see cref="IBeatmap"/> to process. This should already be converted to the applicable <see cref="Ruleset"/>.
+        /// </summary>
+        IBeatmap Beatmap { get; }
+
+        /// <summary>
+        /// Processes the converted <see cref="Beatmap"/> prior to <see cref="HitObject.ApplyDefaults"/> being invoked.
+        /// <para>
+        /// Nested <see cref="HitObject"/>s generated during <see cref="HitObject.ApplyDefaults"/> will not be present by this point,
+        /// and no mods will have been applied to the <see cref="HitObject"/>s.
+        /// </para>
+        /// </summary>
+        /// <remarks>
+        /// This can only be used to add alterations to <see cref="HitObject"/>s generated directly through the conversion process.
+        /// </remarks>
+        void PreProcess();
+
+        /// <summary>
+        /// Processes the converted <see cref="Beatmap"/> after <see cref="HitObject.ApplyDefaults"/> has been invoked.
+        /// <para>
+        /// Nested <see cref="HitObject"/>s generated during <see cref="HitObject.ApplyDefaults"/> will be present by this point,
+        /// and mods will have been applied to all <see cref="HitObject"/>s.
+        /// </para>
+        /// </summary>
+        /// <remarks>
+        /// This should be used to add alterations to <see cref="HitObject"/>s while they are in their most playable state.
+        /// </remarks>
+        void PostProcess();
+    }
+}

osu.Game/Beatmaps/WorkingBeatmap.cs

@@ -19,7 +19,7 @@ using osu.Game.Skinning;
 
 namespace osu.Game.Beatmaps
 {
-    public abstract class WorkingBeatmap : IDisposable
+    public abstract partial class WorkingBeatmap : IDisposable
     {
         public readonly BeatmapInfo BeatmapInfo;
 
@@ -116,8 +116,9 @@ namespace osu.Game.Beatmaps
                     mod.ApplyToDifficulty(converted.BeatmapInfo.BaseDifficulty);
             }
 
-            // Post-process
-            rulesetInstance.CreateBeatmapProcessor(converted)?.PostProcess();
+            IBeatmapProcessor processor = rulesetInstance.CreateBeatmapProcessor(converted);
+
+            processor?.PreProcess();
 
             // Compute default values for hitobjects, including creating nested hitobjects in-case they're needed
             foreach (var obj in converted.HitObjects)
@@ -127,6 +128,8 @@ namespace osu.Game.Beatmaps
             foreach (var obj in converted.HitObjects)
                 mod.ApplyToHitObject(obj);
 
+            processor?.PostProcess();
+
             return converted;
         }
 
@@ -145,7 +148,7 @@ namespace osu.Game.Beatmaps
         private Track populateTrack()
         {
             // we want to ensure that we always have a track, even if it's a fake one.
-            var t = GetTrack() ?? new TrackVirtual();
+            var t = GetTrack() ?? new VirtualBeatmapTrack(Beatmap);
             applyRateAdjustments(t);
             return t;
         }

osu.Game/Beatmaps/WorkingBeatmap_VirtualBeatmapTrack.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Linq;
+using osu.Framework.Audio.Track;
+using osu.Game.Rulesets.Objects.Types;
+
+namespace osu.Game.Beatmaps
+{
+    public partial class WorkingBeatmap
+    {
+        /// <summary>
+        /// A type of <see cref="TrackVirtual"/> which provides a valid length based on the <see cref="HitObject"/>s of an <see cref="IBeatmap"/>.
+        /// </summary>
+        protected class VirtualBeatmapTrack : TrackVirtual
+        {
+            private const double excess_length = 1000;
+
+            public VirtualBeatmapTrack(IBeatmap beatmap)
+            {
+                var lastObject = beatmap.HitObjects.LastOrDefault();
+
+                switch (lastObject)
+                {
+                    case null:
+                        Length = excess_length;
+                        break;
+                    case IHasEndTime endTime:
+                        Length = endTime.EndTime + excess_length;
+                        break;
+                    default:
+                        Length = lastObject.StartTime + excess_length;
+                        break;
+                }
+            }
+        }
+    }
+}

osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs

@@ -8,16 +8,20 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Input;
 using OpenTK;
 using osu.Framework.Configuration;
+using osu.Framework.Input.Bindings;
 using osu.Game.Audio;
+using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
 
 namespace osu.Game.Graphics.Containers
 {
-    public class OsuFocusedOverlayContainer : FocusedOverlayContainer, IPreviewTrackOwner
+    public class OsuFocusedOverlayContainer : FocusedOverlayContainer, IPreviewTrackOwner, IKeyBindingHandler<GlobalAction>
     {
         private SampleChannel samplePopIn;
         private SampleChannel samplePopOut;
 
+        protected virtual bool PlaySamplesOnStateChange => true;
+
         private PreviewTrackManager previewTrackManager;
 
         protected readonly Bindable<OverlayActivation> OverlayActivationMode = new Bindable<OverlayActivation>(OverlayActivation.All);
@@ -63,18 +67,33 @@ namespace osu.Game.Graphics.Containers
             return base.OnClick(state);
         }
 
+        public bool OnPressed(GlobalAction action)
+        {
+            if (action == GlobalAction.Back)
+            {
+                State = Visibility.Hidden;
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool OnReleased(GlobalAction action) => false;
+
         private void onStateChanged(Visibility visibility)
         {
             switch (visibility)
             {
                 case Visibility.Visible:
                     if (OverlayActivationMode != OverlayActivation.Disabled)
-                        samplePopIn?.Play();
+                    {
+                        if (PlaySamplesOnStateChange) samplePopIn?.Play();
+                    }
                     else
                         State = Visibility.Hidden;
                     break;
                 case Visibility.Hidden:
-                    samplePopOut?.Play();
+                    if (PlaySamplesOnStateChange) samplePopOut?.Play();
                     break;
             }
         }

osu.Game/Graphics/Containers/OsuTextFlowContainer.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Sprites;
@@ -16,6 +17,8 @@ namespace osu.Game.Graphics.Containers
 
         protected override SpriteText CreateSpriteText() => new OsuSpriteText();
 
+        public void AddArbitraryDrawable(Drawable drawable) => AddInternal(drawable);
+
         public void AddIcon(FontAwesome icon, Action<SpriteText> creationParameters = null) => AddText(((char)icon).ToString(), creationParameters);
     }
 }

osu.Game/Graphics/DrawableDate.cs

@@ -12,14 +12,14 @@ namespace osu.Game.Graphics
 {
     public class DrawableDate : OsuSpriteText, IHasTooltip
     {
-        private readonly DateTimeOffset date;
+        protected readonly DateTimeOffset Date;
 
         public DrawableDate(DateTimeOffset date)
         {
             AutoSizeAxes = Axes.Both;
             Font = "Exo2.0-RegularItalic";
 
-            this.date = date.ToLocalTime();
+            Date = date.ToLocalTime();
         }
 
         [BackgroundDependencyLoader]
@@ -38,7 +38,7 @@ namespace osu.Game.Graphics
         {
             updateTime();
 
-            var diffToNow = DateTimeOffset.Now.Subtract(date);
+            var diffToNow = DateTimeOffset.Now.Subtract(Date);
 
             double timeUntilNextUpdate = 1000;
             if (diffToNow.TotalSeconds > 60)
@@ -58,8 +58,10 @@ namespace osu.Game.Graphics
 
         public override bool HandleMouseInput => true;
 
-        private void updateTime() => Text = date.Humanize();
+        protected virtual string Format() => Date.Humanize();
 
-        public string TooltipText => date.ToString();
+        private void updateTime() => Text = Format();
+
+        public virtual string TooltipText => string.Format($"{Date:MMMM d, yyyy h:mm tt \"UTC\"z}");
     }
 }

osu.Game/Graphics/UserInterface/FocusedTextBox.cs

@@ -2,9 +2,10 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
-using OpenTK.Input;
 using osu.Framework.Input;
 using System;
+using osu.Game.Input.Bindings;
+using OpenTK.Input;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -19,6 +20,7 @@ namespace osu.Game.Graphics.UserInterface
         public Action Exit;
 
         private bool focus;
+
         public bool HoldFocus
         {
             get { return focus; }
@@ -26,7 +28,7 @@ namespace osu.Game.Graphics.UserInterface
             {
                 focus = value;
                 if (!focus && HasFocus)
-                    GetContainingInputManager().ChangeFocus(null);
+                    base.KillFocus();
             }
         }
 
@@ -41,18 +43,34 @@ namespace osu.Game.Graphics.UserInterface
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
-            if (!args.Repeat && args.Key == Key.Escape)
-            {
-                if (Text.Length > 0)
-                    Text = string.Empty;
-                else
-                    Exit?.Invoke();
-                return true;
-            }
+            if (!HasFocus) return false;
+
+            if (args.Key == Key.Escape)
+                return false; // disable the framework-level handling of escape key for confority (we use GlobalAction.Back).
 
             return base.OnKeyDown(state, args);
         }
 
+        public override bool OnPressed(GlobalAction action)
+        {
+            if (action == GlobalAction.Back)
+            {
+                if (Text.Length > 0)
+                {
+                    Text = string.Empty;
+                    return true;
+                }
+            }
+
+            return base.OnPressed(action);
+        }
+
+        protected override void KillFocus()
+        {
+            base.KillFocus();
+            Exit?.Invoke();
+        }
+
         public override bool RequestsFocus => HoldFocus;
     }
 }

osu.Game/Graphics/UserInterface/LoadingAnimation.cs

@@ -4,12 +4,17 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public class LoadingAnimation : VisibilityContainer
     {
         private readonly SpriteIcon spinner;
+        private readonly SpriteIcon spinnerShadow;
+
+        private const float spin_duration = 600;
+        private const float transition_duration = 200;
 
         public LoadingAnimation()
         {
@@ -20,12 +25,22 @@ namespace osu.Game.Graphics.UserInterface
 
             Children = new Drawable[]
             {
-                spinner = new SpriteIcon
+                spinnerShadow = new SpriteIcon
                 {
-                    Size = new Vector2(20),
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    Icon = FontAwesome.fa_spinner
+                    RelativeSizeAxes = Axes.Both,
+                    Position = new Vector2(1, 1),
+                    Colour = Color4.Black,
+                    Alpha = 0.4f,
+                    Icon = FontAwesome.fa_circle_o_notch
+                },
+                spinner = new SpriteIcon
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    RelativeSizeAxes = Axes.Both,
+                    Icon = FontAwesome.fa_circle_o_notch
                 }
             };
         }
@@ -34,12 +49,11 @@ namespace osu.Game.Graphics.UserInterface
         {
             base.LoadComplete();
 
-            spinner.Spin(2000, RotationDirection.Clockwise);
+            spinner.Spin(spin_duration, RotationDirection.Clockwise);
+            spinnerShadow.Spin(spin_duration, RotationDirection.Clockwise);
         }
 
-        private const float transition_duration = 500;
-
-        protected override void PopIn() => this.FadeIn(transition_duration * 5, Easing.OutQuint);
+        protected override void PopIn() => this.FadeIn(transition_duration * 2, Easing.OutQuint);
 
         protected override void PopOut() => this.FadeOut(transition_duration, Easing.OutQuint);
     }

osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs

@@ -18,7 +18,7 @@ namespace osu.Game.Graphics.UserInterface
     {
         protected override Drawable GetDrawableCharacter(char c) => new PasswordMaskChar(CalculatedTextSize);
 
-        public override bool AllowClipboardExport => false;
+        protected override bool AllowClipboardExport => false;
 
         private readonly CapsWarning warning;
 

osu.Game/Graphics/UserInterface/OsuTextBox.cs

@@ -9,10 +9,12 @@ using osu.Framework.Input;
 using osu.Game.Graphics.Sprites;
 using OpenTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Input.Bindings;
+using osu.Game.Input.Bindings;
 
 namespace osu.Game.Graphics.UserInterface
 {
-    public class OsuTextBox : TextBox
+    public class OsuTextBox : TextBox, IKeyBindingHandler<GlobalAction>
     {
         protected override Color4 BackgroundUnfocused => Color4.Black.Opacity(0.5f);
         protected override Color4 BackgroundFocused => OsuColour.Gray(0.3f).Opacity(0.8f);
@@ -33,10 +35,7 @@ namespace osu.Game.Graphics.UserInterface
             TextContainer.Height = 0.5f;
             CornerRadius = 5;
 
-            Current.DisabledChanged += disabled =>
-            {
-                Alpha = disabled ? 0.3f : 1;
-            };
+            Current.DisabledChanged += disabled => { Alpha = disabled ? 0.3f : 1; };
         }
 
         [BackgroundDependencyLoader]
@@ -59,5 +58,18 @@ namespace osu.Game.Graphics.UserInterface
         }
 
         protected override Drawable GetDrawableCharacter(char c) => new OsuSpriteText { Text = c.ToString(), TextSize = CalculatedTextSize };
+
+        public virtual bool OnPressed(GlobalAction action)
+        {
+            if (action == GlobalAction.Back)
+            {
+                KillFocus();
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool OnReleased(GlobalAction action) => false;
     }
 }

osu.Game/Graphics/UserInterface/SearchTextBox.cs

@@ -34,8 +34,6 @@ namespace osu.Game.Graphics.UserInterface
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
-            if (HandlePendingText(state)) return true;
-
             if (!state.Keyboard.ControlPressed && !state.Keyboard.ShiftPressed)
             {
                 switch (args.Key)

osu.Game/Migrations/20180628011956_RemoveNegativeSetIDs.Designer.cs

@@ -0,0 +1,376 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using osu.Game.Database;
+
+namespace osu.Game.Migrations
+{
+    [DbContext(typeof(OsuDbContext))]
+    [Migration("20180628011956_RemoveNegativeSetIDs")]
+    partial class RemoveNegativeSetIDs
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "2.1.1-rtm-30846");
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapDifficulty", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<float>("ApproachRate");
+
+                    b.Property<float>("CircleSize");
+
+                    b.Property<float>("DrainRate");
+
+                    b.Property<float>("OverallDifficulty");
+
+                    b.Property<double>("SliderMultiplier");
+
+                    b.Property<double>("SliderTickRate");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("BeatmapDifficulty");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AudioLeadIn");
+
+                    b.Property<int>("BaseDifficultyID");
+
+                    b.Property<int>("BeatDivisor");
+
+                    b.Property<int>("BeatmapSetInfoID");
+
+                    b.Property<bool>("Countdown");
+
+                    b.Property<double>("DistanceSpacing");
+
+                    b.Property<int>("GridSize");
+
+                    b.Property<string>("Hash");
+
+                    b.Property<bool>("Hidden");
+
+                    b.Property<bool>("LetterboxInBreaks");
+
+                    b.Property<string>("MD5Hash");
+
+                    b.Property<int?>("MetadataID");
+
+                    b.Property<int?>("OnlineBeatmapID");
+
+                    b.Property<string>("Path");
+
+                    b.Property<int>("RulesetID");
+
+                    b.Property<bool>("SpecialStyle");
+
+                    b.Property<float>("StackLeniency");
+
+                    b.Property<double>("StarDifficulty");
+
+                    b.Property<string>("StoredBookmarks");
+
+                    b.Property<double>("TimelineZoom");
+
+                    b.Property<string>("Version");
+
+                    b.Property<bool>("WidescreenStoryboard");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("BaseDifficultyID");
+
+                    b.HasIndex("BeatmapSetInfoID");
+
+                    b.HasIndex("Hash");
+
+                    b.HasIndex("MD5Hash");
+
+                    b.HasIndex("MetadataID");
+
+                    b.HasIndex("OnlineBeatmapID")
+                        .IsUnique();
+
+                    b.HasIndex("RulesetID");
+
+                    b.ToTable("BeatmapInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapMetadata", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Artist");
+
+                    b.Property<string>("ArtistUnicode");
+
+                    b.Property<string>("AudioFile");
+
+                    b.Property<string>("AuthorString")
+                        .HasColumnName("Author");
+
+                    b.Property<string>("BackgroundFile");
+
+                    b.Property<int>("PreviewTime");
+
+                    b.Property<string>("Source");
+
+                    b.Property<string>("Tags");
+
+                    b.Property<string>("Title");
+
+                    b.Property<string>("TitleUnicode");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("BeatmapMetadata");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetFileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("BeatmapSetInfoID");
+
+                    b.Property<int>("FileInfoID");
+
+                    b.Property<string>("Filename")
+                        .IsRequired();
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("BeatmapSetInfoID");
+
+                    b.HasIndex("FileInfoID");
+
+                    b.ToTable("BeatmapSetFileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("DeletePending");
+
+                    b.Property<string>("Hash");
+
+                    b.Property<int?>("MetadataID");
+
+                    b.Property<int?>("OnlineBeatmapSetID");
+
+                    b.Property<bool>("Protected");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("DeletePending");
+
+                    b.HasIndex("Hash")
+                        .IsUnique();
+
+                    b.HasIndex("MetadataID");
+
+                    b.HasIndex("OnlineBeatmapSetID")
+                        .IsUnique();
+
+                    b.ToTable("BeatmapSetInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Configuration.DatabasedSetting", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("IntKey")
+                        .HasColumnName("Key");
+
+                    b.Property<int?>("RulesetID");
+
+                    b.Property<string>("StringValue")
+                        .HasColumnName("Value");
+
+                    b.Property<int?>("Variant");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("RulesetID", "Variant");
+
+                    b.ToTable("Settings");
+                });
+
+            modelBuilder.Entity("osu.Game.Input.Bindings.DatabasedKeyBinding", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("IntAction")
+                        .HasColumnName("Action");
+
+                    b.Property<string>("KeysString")
+                        .HasColumnName("Keys");
+
+                    b.Property<int?>("RulesetID");
+
+                    b.Property<int?>("Variant");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("IntAction");
+
+                    b.HasIndex("RulesetID", "Variant");
+
+                    b.ToTable("KeyBinding");
+                });
+
+            modelBuilder.Entity("osu.Game.IO.FileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Hash");
+
+                    b.Property<int>("ReferenceCount");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("Hash")
+                        .IsUnique();
+
+                    b.HasIndex("ReferenceCount");
+
+                    b.ToTable("FileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Rulesets.RulesetInfo", b =>
+                {
+                    b.Property<int?>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("Available");
+
+                    b.Property<string>("InstantiationInfo");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("ShortName");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("Available");
+
+                    b.HasIndex("ShortName")
+                        .IsUnique();
+
+                    b.ToTable("RulesetInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinFileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("FileInfoID");
+
+                    b.Property<string>("Filename")
+                        .IsRequired();
+
+                    b.Property<int>("SkinInfoID");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("FileInfoID");
+
+                    b.HasIndex("SkinInfoID");
+
+                    b.ToTable("SkinFileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Creator");
+
+                    b.Property<bool>("DeletePending");
+
+                    b.Property<string>("Name");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("SkinInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapDifficulty", "BaseDifficulty")
+                        .WithMany()
+                        .HasForeignKey("BaseDifficultyID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Beatmaps.BeatmapSetInfo", "BeatmapSet")
+                        .WithMany("Beatmaps")
+                        .HasForeignKey("BeatmapSetInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Beatmaps.BeatmapMetadata", "Metadata")
+                        .WithMany("Beatmaps")
+                        .HasForeignKey("MetadataID");
+
+                    b.HasOne("osu.Game.Rulesets.RulesetInfo", "Ruleset")
+                        .WithMany()
+                        .HasForeignKey("RulesetID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetFileInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapSetInfo")
+                        .WithMany("Files")
+                        .HasForeignKey("BeatmapSetInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.IO.FileInfo", "FileInfo")
+                        .WithMany()
+                        .HasForeignKey("FileInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapMetadata", "Metadata")
+                        .WithMany("BeatmapSets")
+                        .HasForeignKey("MetadataID");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinFileInfo", b =>
+                {
+                    b.HasOne("osu.Game.IO.FileInfo", "FileInfo")
+                        .WithMany()
+                        .HasForeignKey("FileInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Skinning.SkinInfo")
+                        .WithMany("Files")
+                        .HasForeignKey("SkinInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

osu.Game/Migrations/20180628011956_RemoveNegativeSetIDs.cs

@@ -0,0 +1,19 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace osu.Game.Migrations
+{
+    public partial class RemoveNegativeSetIDs : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // There was a change that baetmaps were being loaded with "-1" online IDs, which is completely incorrect.
+            // This ensures there will not be unique key conflicts as a result of these incorrectly imported beatmaps.
+            migrationBuilder.Sql("UPDATE BeatmapSetInfo SET OnlineBeatmapSetID = null WHERE OnlineBeatmapSetID <= 0");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}

osu.Game/Online/API/APIAccess.cs

@@ -148,7 +148,7 @@ namespace osu.Game.Online.API
                         // The Success callback event is fired on the main thread, so we should wait for that to run before proceeding.
                         // Without this, we will end up circulating this Connecting loop multiple times and queueing up many web requests
                         // before actually going online.
-                        while (State != APIState.Online)
+                        while (State > APIState.Offline && State < APIState.Online)
                             Thread.Sleep(500);
 
                         break;
@@ -158,7 +158,6 @@ namespace osu.Game.Online.API
                 if (authentication.RequestAccessToken() == null)
                 {
                     Logout(false);
-                    State = APIState.Offline;
                     continue;
                 }
 
@@ -208,6 +207,14 @@ namespace osu.Game.Online.API
             {
                 HttpStatusCode statusCode = (we.Response as HttpWebResponse)?.StatusCode ?? (we.Status == WebExceptionStatus.UnknownError ? HttpStatusCode.NotAcceptable : HttpStatusCode.RequestTimeout);
 
+                // special cases for un-typed but useful message responses.
+                switch (we.Message)
+                {
+                    case "Unauthorized":
+                        statusCode = HttpStatusCode.Unauthorized;
+                        break;
+                }
+
                 switch (statusCode)
                 {
                     case HttpStatusCode.Unauthorized:
@@ -292,6 +299,7 @@ namespace osu.Game.Online.API
             password = null;
             authentication.Clear();
             LocalUser.Value = createGuestUser();
+            State = APIState.Offline;
         }
 
         private static User createGuestUser() => new User

osu.Game/OsuGame.cs

@@ -146,7 +146,9 @@ namespace osu.Game
             }
 
             dependencies.CacheAs(this);
+
             dependencies.CacheAs(ruleset);
+            dependencies.CacheAs<IBindable<RulesetInfo>>(ruleset);
 
             // bind config int to database RulesetInfo
             configRuleset = LocalConfig.GetBindable<int>(OsuSetting.Ruleset);

osu.Game/Overlays/DialogOverlay.cs

@@ -30,6 +30,8 @@ namespace osu.Game.Overlays
             State = Visibility.Visible;
         }
 
+        protected override bool PlaySamplesOnStateChange => false;
+
         private void onDialogOnStateChanged(VisibilityContainer dialog, Visibility v)
         {
             if (v != Visibility.Hidden) return;

osu.Game/Overlays/Direct/PlayButton.cs

@@ -10,6 +10,7 @@ using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
+using OpenTK;
 using OpenTK.Graphics;
 
 namespace osu.Game.Overlays.Direct
@@ -48,9 +49,15 @@ namespace osu.Game.Overlays.Direct
             set
             {
                 if (value)
+                {
+                    icon.FadeTo(0.5f, transition_duration, Easing.OutQuint);
                     loadingAnimation.Show();
+                }
                 else
+                {
+                    icon.FadeTo(1, transition_duration, Easing.OutQuint);
                     loadingAnimation.Hide();
+                }
             }
         }
 
@@ -67,7 +74,10 @@ namespace osu.Game.Overlays.Direct
                     RelativeSizeAxes = Axes.Both,
                     Icon = FontAwesome.fa_play,
                 },
-                loadingAnimation = new LoadingAnimation(),
+                loadingAnimation = new LoadingAnimation
+                {
+                    Size = new Vector2(15),
+                },
             });
 
             Playing.ValueChanged += playingStateChanged;

osu.Game/Overlays/KeyBinding/KeyBindingRow.cs

@@ -186,7 +186,7 @@ namespace osu.Game.Overlays.KeyBinding
             {
                 if (bindTarget.IsHovered)
                 {
-                    bindTarget.UpdateKeyCombination(KeyCombination.FromInputState(state));
+                    bindTarget.UpdateKeyCombination(new KeyCombination(KeyCombination.FromInputState(state).Keys.Append(state.Mouse.ScrollDelta.Y > 0 ? InputKey.MouseWheelUp : InputKey.MouseWheelDown)));
                     finalise();
                     return true;
                 }
@@ -202,9 +202,6 @@ namespace osu.Game.Overlays.KeyBinding
 
             switch (args.Key)
             {
-                case Key.Escape:
-                    finalise();
-                    return true;
                 case Key.Delete:
                 {
                     if (state.Keyboard.ShiftPressed)

osu.Game/Overlays/Profile/Components/DrawableJoinDate.cs

@@ -0,0 +1,20 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Profile.Components
+{
+    public class DrawableJoinDate : DrawableDate
+    {
+        public DrawableJoinDate(DateTimeOffset date)
+            : base(date)
+        {
+        }
+
+        protected override string Format() => Text = Date.ToUniversalTime().Year < 2008 ? "Here since the beginning" : $"{Date:MMMM yyyy}";
+
+        public override string TooltipText => $"{Date:MMMM d, yyyy}";
+    }
+}

osu.Game/Overlays/Profile/Components/GradeBadge.cs

@@ -0,0 +1,50 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Graphics.Sprites;
+
+namespace osu.Game.Overlays.Profile.Components
+{
+    public class GradeBadge : Container
+    {
+        private const float width = 50;
+        private readonly string grade;
+        private readonly Sprite badge;
+        private readonly SpriteText numberText;
+
+        public int DisplayCount
+        {
+            set => numberText.Text = value.ToString(@"#,0");
+        }
+
+        public GradeBadge(string grade)
+        {
+            this.grade = grade;
+            Width = width;
+            Height = 41;
+            Add(badge = new Sprite
+            {
+                Width = width,
+                Height = 26
+            });
+            Add(numberText = new OsuSpriteText
+            {
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+                TextSize = 14,
+                Font = @"Exo2.0-Bold"
+            });
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(TextureStore textures)
+        {
+            badge.Texture = textures.Get($"Grades/{grade}");
+        }
+    }
+}

osu.Game/Overlays/Profile/ProfileHeader.cs

@@ -16,6 +16,7 @@ using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays.Profile.Components;
 using osu.Game.Overlays.Profile.Header;
 using osu.Game.Users;
 
@@ -375,12 +376,12 @@ namespace osu.Game.Overlays.Profile
 
             if (user.JoinDate.ToUniversalTime().Year < 2008)
             {
-                infoTextLeft.AddText("Here since the beginning", boldItalic);
+                infoTextLeft.AddText(new DrawableJoinDate(user.JoinDate), lightText);
             }
             else
             {
                 infoTextLeft.AddText("Joined ", lightText);
-                infoTextLeft.AddText(new DrawableDate(user.JoinDate), boldItalic);
+                infoTextLeft.AddText(new DrawableJoinDate(user.JoinDate), boldItalic);
             }
 
             infoTextLeft.NewLine();
@@ -470,43 +471,5 @@ namespace osu.Game.Overlays.Profile
 
             infoTextRight.NewLine();
         }
-
-        private class GradeBadge : Container
-        {
-            private const float width = 50;
-            private readonly string grade;
-            private readonly Sprite badge;
-            private readonly SpriteText numberText;
-
-            public int DisplayCount
-            {
-                set { numberText.Text = value.ToString(@"#,0"); }
-            }
-
-            public GradeBadge(string grade)
-            {
-                this.grade = grade;
-                Width = width;
-                Height = 41;
-                Add(badge = new Sprite
-                {
-                    Width = width,
-                    Height = 26
-                });
-                Add(numberText = new OsuSpriteText
-                {
-                    Anchor = Anchor.BottomCentre,
-                    Origin = Anchor.BottomCentre,
-                    TextSize = 14,
-                    Font = @"Exo2.0-Bold"
-                });
-            }
-
-            [BackgroundDependencyLoader]
-            private void load(TextureStore textures)
-            {
-                badge.Texture = textures.Get($"Grades/{grade}");
-            }
-        }
     }
 }

osu.Game/Overlays/Profile/Sections/Recent/DrawableRecentActivity.cs

@@ -141,11 +141,11 @@ namespace osu.Game.Overlays.Profile.Sections.Recent
                     break;
 
                 case RecentActivityType.UserSupportFirst:
-                    message = $"{userLinkTemplate()} has become an osu! supporter - thanks for your generosity!";
+                    message = $"{userLinkTemplate()} has become an osu!supporter - thanks for your generosity!";
                     break;
 
                 case RecentActivityType.UserSupportGift:
-                    message = $"{userLinkTemplate()} has received the gift of osu! supporter!";
+                    message = $"{userLinkTemplate()} has received the gift of osu!supporter!";
                     break;
 
                 case RecentActivityType.UsernameChange:

osu.Game/Rulesets/Judgements/Judgement.cs

@@ -45,11 +45,15 @@ namespace osu.Game.Rulesets.Judgements
         public double TimeOffset { get; set; }
 
         /// <summary>
-        /// Whether the <see cref="Result"/> should affect the combo portion of the score.
-        /// If false, the <see cref="Result"/> will be considered for the bonus portion of the score.
+        /// Whether the <see cref="Result"/> should affect the current combo.
         /// </summary>
         public virtual bool AffectsCombo => true;
 
+        /// <summary>
+        /// Whether the <see cref="Result"/> should be counted as base (combo) or bonus score.
+        /// </summary>
+        public virtual bool IsBonus => !AffectsCombo;
+
         /// <summary>
         /// The numeric representation for the result achieved.
         /// </summary>

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

@@ -10,7 +10,7 @@ using osu.Game.Beatmaps.ControlPoints;
 
 namespace osu.Game.Rulesets.Objects.Legacy
 {
-    internal abstract class ConvertSlider : HitObject, IHasCurve
+    internal abstract class ConvertSlider : HitObject, IHasCurve, IHasLegacyLastTickOffset
     {
         /// <summary>
         /// Scoring distance with a speed-adjusted beat length of 1 second.
@@ -45,5 +45,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
 
             Velocity = scoringDistance / timingPoint.BeatLength;
         }
+
+        public double LegacyLastTickOffset => 36;
     }
 }

osu.Game/Rulesets/Objects/Types/IHasComboIndex.cs

@@ -1,26 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-namespace osu.Game.Rulesets.Objects.Types
-{
-    /// <summary>
-    /// A HitObject that is part of a combo and has extended information about its position relative to other combo objects.
-    /// </summary>
-    public interface IHasComboIndex : IHasCombo
-    {
-        /// <summary>
-        /// The offset of this hitobject in the current combo.
-        /// </summary>
-        int IndexInCurrentCombo { get; set; }
-
-        /// <summary>
-        /// The offset of this hitobject in the current combo.
-        /// </summary>
-        int ComboIndex { get; set; }
-
-        /// <summary>
-        /// Whether this is the last object in the current combo.
-        /// </summary>
-        bool LastInCombo { get; set; }
-    }
-}

osu.Game/Rulesets/Objects/Types/IHasLegacyLastTickOffset.cs

@@ -0,0 +1,14 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Rulesets.Objects.Types
+{
+    /// <summary>
+    /// A type of <see cref="HitObject"/> which may require the last tick to be offset.
+    /// This is specific to osu!stable conversion, and should not be used elsewhere.
+    /// </summary>
+    public interface IHasLegacyLastTickOffset
+    {
+        double LegacyLastTickOffset { get; }
+    }
+}

osu.Game/Rulesets/Ruleset.cs

@@ -57,8 +57,18 @@ namespace osu.Game.Rulesets
         /// <returns></returns>
         public abstract RulesetContainer CreateRulesetContainerWith(WorkingBeatmap beatmap);
 
+        /// <summary>
+        /// Creates a <see cref="IBeatmapConverter"/> to convert a <see cref="IBeatmap"/> to one that is applicable for this <see cref="Ruleset"/>.
+        /// </summary>
+        /// <param name="beatmap">The <see cref="IBeatmap"/> to be converted.</param>
+        /// <returns>The <see cref="IBeatmapConverter"/>.</returns>
         public abstract IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap);
 
+        /// <summary>
+        /// Optionally creates a <see cref="IBeatmapProcessor"/> to alter a <see cref="IBeatmap"/> after it has been converted.
+        /// </summary>
+        /// <param name="beatmap">The <see cref="IBeatmap"/> to be processed.</param>
+        /// <returns>The <see cref="IBeatmapProcessor"/>.</returns>
         public virtual IBeatmapProcessor CreateBeatmapProcessor(IBeatmap beatmap) => null;
 
         public abstract DifficultyCalculator CreateDifficultyCalculator(WorkingBeatmap beatmap);

osu.Game/Rulesets/RulesetStore.cs

@@ -84,10 +84,17 @@ namespace osu.Game.Rulesets
                 {
                     try
                     {
-                        var instance = r.CreateInstance();
+                        var instanceInfo = ((Ruleset)Activator.CreateInstance(Type.GetType(r.InstantiationInfo, asm =>
+                        {
+                            // for the time being, let's ignore the version being loaded.
+                            // this allows for debug builds to successfully load rulesets (even though debug rulesets have a 0.0.0 version).
+                            asm.Version = null;
+                            return Assembly.Load(asm);
+                        }, null), (RulesetInfo)null)).RulesetInfo;
 
-                        r.Name = instance.Description;
-                        r.ShortName = instance.ShortName;
+                        r.Name = instanceInfo.Name;
+                        r.ShortName = instanceInfo.ShortName;
+                        r.InstantiationInfo = instanceInfo.InstantiationInfo;
 
                         r.Available = true;
                     }

osu.Game/Rulesets/Scoring/ScoreProcessor.cs

@@ -261,13 +261,19 @@ namespace osu.Game.Rulesets.Scoring
                         break;
                 }
 
-                baseScore += judgement.NumericResult;
-                rollingMaxBaseScore += judgement.MaxNumericResult;
-
                 JudgedHits++;
             }
-            else if (judgement.IsHit)
-                bonusScore += judgement.NumericResult;
+
+            if (judgement.IsBonus)
+            {
+                if (judgement.IsHit)
+                    bonusScore += judgement.NumericResult;
+            }
+            else
+            {
+                baseScore += judgement.NumericResult;
+                rollingMaxBaseScore += judgement.MaxNumericResult;
+            }
         }
 
         /// <summary>
@@ -280,14 +286,18 @@ namespace osu.Game.Rulesets.Scoring
             HighestCombo.Value = judgement.HighestComboAtJudgement;
 
             if (judgement.AffectsCombo)
+                JudgedHits--;
+
+            if (judgement.IsBonus)
+            {
+                if (judgement.IsHit)
+                    bonusScore -= judgement.NumericResult;
+            }
+            else
             {
                 baseScore -= judgement.NumericResult;
                 rollingMaxBaseScore -= judgement.MaxNumericResult;
-
-                JudgedHits--;
             }
-            else if (judgement.IsHit)
-                bonusScore -= judgement.NumericResult;
         }
 
         private void updateScore()

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

@@ -52,8 +52,6 @@ namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
             if (Beatmap.Value == null)
                 return;
 
-            if (Beatmap.Value.Track.Length == double.PositiveInfinity) return;
-
             float markerPos = MathHelper.Clamp(ToLocalSpace(screenPosition).X, 0, DrawWidth);
             adjustableClock.Seek(markerPos / DrawWidth * Beatmap.Value.Track.Length);
         }

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

@@ -47,8 +47,7 @@ namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
                 return;
             }
 
-            // 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);
+            timeline.RelativeChildSize = 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/Timeline/Timeline.cs

@@ -52,17 +52,20 @@ namespace osu.Game.Screens.Edit.Screens.Compose.Timeline
             WaveformVisible.ValueChanged += visible => waveform.FadeTo(visible ? 1 : 0, 200, Easing.OutQuint);
 
             Beatmap.BindTo(beatmap);
-        }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-            Beatmap.BindValueChanged(b => waveform.Waveform = b.Waveform);
-            waveform.Waveform = Beatmap.Value.Waveform;
+            Beatmap.BindValueChanged(b =>
+            {
+                waveform.Waveform = b.Waveform;
+                track = b.Track;
+            }, true);
         }
 
         /// <summary>
-        /// The track's time in the previous frame.
+        /// The timeline's scroll position in the last frame.
+        /// </summary>
+        private float lastScrollPosition;
+
+        /// <summary>
+        /// The track time in the last frame.
         /// </summary>
         private double lastTrackTime;
 
@@ -76,6 +79,8 @@ namespace osu.Game.Screens.Edit.Screens.Compose.Timeline
         /// </summary>
         private bool trackWasPlaying;
 
+        private Track track;
+
         protected override void Update()
         {
             base.Update();
@@ -83,49 +88,48 @@ namespace osu.Game.Screens.Edit.Screens.Compose.Timeline
             // The extrema of track time should be positioned at the centre of the container when scrolled to the start or end
             Content.Margin = new MarginPadding { Horizontal = DrawWidth / 2 };
 
-            if (handlingDragInput)
-            {
-                // The user is dragging - the track should always follow the timeline
-                seekTrackToCurrent();
-            }
-            else if (adjustableClock.IsRunning)
-            {
-                // If the user hasn't provided mouse input but the track is running, always follow the track
+            // This needs to happen after transforms are updated, but before the scroll position is updated in base.UpdateAfterChildren
+            if (adjustableClock.IsRunning)
                 scrollToTrackTime();
-            }
-            else
+        }
+
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            if (handlingDragInput)
+                seekTrackToCurrent();
+            else if (!adjustableClock.IsRunning)
             {
-                // The track isn't playing, so we want to smooth-scroll once more, and re-enable wheel scrolling
-                // There are two cases we have to be wary of:
-                // 1) The user scrolls on this timeline: We want the track to follow us
+                // The track isn't running. There are two cases we have to be wary of:
+                // 1) The user flick-drags on this timeline: We want the track to follow us
                 // 2) The user changes the track time through some other means (scrolling in the editor or overview timeline): We want to follow the track time
 
-                // The simplest way to cover both cases is by checking that inter-frame track times are identical
-                if (adjustableClock.CurrentTime == lastTrackTime)
-                {
-                    // The track hasn't been seeked externally
+                // The simplest way to cover both cases is by checking whether the scroll position has changed and the audio hasn't been changed externally
+                if (Current != lastScrollPosition && adjustableClock.CurrentTime == lastTrackTime)
                     seekTrackToCurrent();
-                }
                 else
-                {
-                    // The track has been seeked externally
                     scrollToTrackTime();
-                }
             }
 
+            lastScrollPosition = Current;
             lastTrackTime = adjustableClock.CurrentTime;
+        }
 
-            void seekTrackToCurrent()
-            {
-                if (!(Beatmap.Value.Track is TrackVirtual))
-                    adjustableClock.Seek(Current / Content.DrawWidth * Beatmap.Value.Track.Length);
-            }
+        private void seekTrackToCurrent()
+        {
+            if (!track.IsLoaded)
+                return;
 
-            void scrollToTrackTime()
-            {
-                if (!(Beatmap.Value.Track is TrackVirtual))
-                    ScrollTo((float)(adjustableClock.CurrentTime / Beatmap.Value.Track.Length) * Content.DrawWidth, false);
-            }
+            adjustableClock.Seek(Current / Content.DrawWidth * track.Length);
+        }
+
+        private void scrollToTrackTime()
+        {
+            if (!track.IsLoaded)
+                return;
+
+            ScrollTo((float)(adjustableClock.CurrentTime / track.Length) * Content.DrawWidth, false);
         }
 
         protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)

osu.Game/Screens/Menu/ButtonSystem.cs

@@ -148,8 +148,6 @@ namespace osu.Game.Screens.Menu
                 case Key.Space:
                     logo?.TriggerOnClick(state);
                     return true;
-                case Key.Escape:
-                    return goBack();
             }
 
             return false;
@@ -181,16 +179,7 @@ namespace osu.Game.Screens.Menu
             }
         }
 
-        public bool OnReleased(GlobalAction action)
-        {
-            switch (action)
-            {
-                case GlobalAction.Back:
-                    return true;
-                default:
-                    return false;
-            }
-        }
+        public bool OnReleased(GlobalAction action) => false;
 
         private void onPlay()
         {