Merge pull request #1735 from Aergwyn/add-nofitication-overlay-push-bg

Let NotificationOverlay move the background

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

@@ -37,9 +37,9 @@ namespace osu.Game.Rulesets.Catch.Objects
         /// </summary>
         public CatchHitObject HyperDashTarget;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             Scale = 1.0f - 0.7f * (difficulty.CircleSize - 5) / 5;
         }

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using OpenTK;
@@ -25,7 +26,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
                 RelativeChildSize = new Vector2(1, (float)HitObject.Duration)
             };
 
-            foreach (CatchHitObject tick in s.Ticks)
+            foreach (CatchHitObject tick in s.NestedHitObjects.OfType<CatchHitObject>())
             {
                 TinyDroplet tiny = tick as TinyDroplet;
                 if (tiny != null)

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

@@ -11,7 +11,6 @@ using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using OpenTK;
-using osu.Framework.Lists;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
@@ -29,9 +28,9 @@ namespace osu.Game.Rulesets.Catch.Objects
         public double Velocity;
         public double TickDistance;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
             DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
@@ -42,92 +41,94 @@ namespace osu.Game.Rulesets.Catch.Objects
             TickDistance = scoringDistance / difficulty.SliderTickRate;
         }
 
-        public IEnumerable<CatchHitObject> Ticks
+        protected override void CreateNestedHitObjects()
         {
-            get
+            base.CreateNestedHitObjects();
+
+            createTicks();
+        }
+
+        private void createTicks()
+        {
+            if (TickDistance == 0)
+                return;
+
+            var length = Curve.Distance;
+            var tickDistance = Math.Min(TickDistance, length);
+            var repeatDuration = length / Velocity;
+
+            var minDistanceFromEnd = Velocity * 0.01;
+
+            AddNested(new Fruit
             {
-                SortedList<CatchHitObject> ticks = new SortedList<CatchHitObject>((a, b) => a.StartTime.CompareTo(b.StartTime));
+                Samples = Samples,
+                ComboColour = ComboColour,
+                StartTime = StartTime,
+                X = X
+            });
 
-                if (TickDistance == 0)
-                    return ticks;
+            for (var repeat = 0; repeat < RepeatCount; repeat++)
+            {
+                var repeatStartTime = StartTime + repeat * repeatDuration;
+                var reversed = repeat % 2 == 1;
 
-                var length = Curve.Distance;
-                var tickDistance = Math.Min(TickDistance, length);
-                var repeatDuration = length / Velocity;
-
-                var minDistanceFromEnd = Velocity * 0.01;
-
-                ticks.Add(new Fruit
+                for (var d = tickDistance; d <= length; d += tickDistance)
                 {
-                    Samples = Samples,
-                    ComboColour = ComboColour,
-                    StartTime = StartTime,
-                    X = X
-                });
+                    if (d > length - minDistanceFromEnd)
+                        break;
 
-                for (var repeat = 0; repeat < RepeatCount; repeat++)
-                {
-                    var repeatStartTime = StartTime + repeat * repeatDuration;
-                    var reversed = repeat % 2 == 1;
+                    var timeProgress = d / length;
+                    var distanceProgress = reversed ? 1 - timeProgress : timeProgress;
 
-                    for (var d = tickDistance; d <= length; d += tickDistance)
+                    var lastTickTime = repeatStartTime + timeProgress * repeatDuration;
+                    AddNested(new Droplet
                     {
-                        if (d > length - minDistanceFromEnd)
-                            break;
-
-                        var timeProgress = d / length;
-                        var distanceProgress = reversed ? 1 - timeProgress : timeProgress;
-
-                        var lastTickTime = repeatStartTime + timeProgress * repeatDuration;
-                        ticks.Add(new Droplet
-                        {
-                            StartTime = lastTickTime,
-                            ComboColour = ComboColour,
-                            X = Curve.PositionAt(distanceProgress).X / CatchPlayfield.BASE_WIDTH,
-                            Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
-                            {
-                                Bank = s.Bank,
-                                Name = @"slidertick",
-                                Volume = s.Volume
-                            }))
-                        });
-                    }
-
-                    double tinyTickInterval = tickDistance / length * repeatDuration;
-                    while (tinyTickInterval > 100)
-                        tinyTickInterval /= 2;
-
-                    for (double t = 0; t < repeatDuration; t += tinyTickInterval)
-                    {
-                        double progress = reversed ? 1 - t / repeatDuration : t / repeatDuration;
-
-                        ticks.Add(new TinyDroplet
-                        {
-                            StartTime = repeatStartTime + t,
-                            ComboColour = ComboColour,
-                            X = Curve.PositionAt(progress).X / CatchPlayfield.BASE_WIDTH,
-                            Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
-                            {
-                                Bank = s.Bank,
-                                Name = @"slidertick",
-                                Volume = s.Volume
-                            }))
-                        });
-                    }
-
-                    ticks.Add(new Fruit
-                    {
-                        Samples = Samples,
+                        StartTime = lastTickTime,
                         ComboColour = ComboColour,
-                        StartTime = repeatStartTime + repeatDuration,
-                        X = Curve.PositionAt(reversed ? 0 : 1).X / CatchPlayfield.BASE_WIDTH
+                        X = Curve.PositionAt(distanceProgress).X / CatchPlayfield.BASE_WIDTH,
+                        Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
+                        {
+                            Bank = s.Bank,
+                            Name = @"slidertick",
+                            Volume = s.Volume
+                        }))
                     });
                 }
 
-                return ticks;
+                double tinyTickInterval = tickDistance / length * repeatDuration;
+                while (tinyTickInterval > 100)
+                    tinyTickInterval /= 2;
+
+                for (double t = 0; t < repeatDuration; t += tinyTickInterval)
+                {
+                    double progress = reversed ? 1 - t / repeatDuration : t / repeatDuration;
+
+                    AddNested(new TinyDroplet
+                    {
+                        StartTime = repeatStartTime + t,
+                        ComboColour = ComboColour,
+                        X = Curve.PositionAt(progress).X / CatchPlayfield.BASE_WIDTH,
+                        Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
+                        {
+                            Bank = s.Bank,
+                            Name = @"slidertick",
+                            Volume = s.Volume
+                        }))
+                    });
+                }
+
+                AddNested(new Fruit
+                {
+                    Samples = Samples,
+                    ComboColour = ComboColour,
+                    StartTime = repeatStartTime + repeatDuration,
+                    X = Curve.PositionAt(reversed ? 0 : 1).X / CatchPlayfield.BASE_WIDTH
+                });
             }
+
         }
 
+
         public double EndTime => StartTime + RepeatCount * Curve.Distance / Velocity;
 
         public float EndX => Curve.PositionAt(ProgressAt(1)).X / CatchPlayfield.BASE_WIDTH;

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Catch.Objects;
@@ -28,7 +29,7 @@ namespace osu.Game.Rulesets.Catch.Scoring
                     AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
                     AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
 
-                    foreach (var unused in stream.Ticks)
+                    foreach (var unused in stream.NestedHitObjects.OfType<CatchHitObject>())
                         AddJudgement(new CatchJudgement { Result = HitResult.Perfect });
 
                     continue;

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

@@ -76,10 +76,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     Duration = endTime - HitObject.StartTime
                 };
 
-                hold.Head.Samples.Add(new SampleInfo
-                {
-                    Name = SampleInfo.HIT_NORMAL
-                });
+                if (hold.Head.Samples == null)
+                    hold.Head.Samples = new SampleInfoList();
+
+                hold.Head.Samples.Add(new SampleInfo { Name = SampleInfo.HIT_NORMAL });
 
                 hold.Tail.Samples = HitObject.Samples;
 

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

@@ -77,7 +77,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                 }
             });
 
-            foreach (var tick in HitObject.Ticks)
+            foreach (var tick in HitObject.NestedHitObjects.OfType<HoldNoteTick>())
             {
                 var drawableTick = new DrawableHoldNoteTick(tick)
                 {

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

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Objects.Types;
@@ -63,9 +62,9 @@ namespace osu.Game.Rulesets.Mania.Objects
         /// </summary>
         private double tickSpacing = 50;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
             tickSpacing = timingPoint.BeatLength / difficulty.SliderTickRate;
@@ -74,29 +73,27 @@ namespace osu.Game.Rulesets.Mania.Objects
             Tail.ApplyDefaults(controlPointInfo, difficulty);
         }
 
-        /// <summary>
-        /// The scoring scoring ticks of the hold note.
-        /// </summary>
-        public IEnumerable<HoldNoteTick> Ticks => ticks ?? (ticks = createTicks());
-        private List<HoldNoteTick> ticks;
-
-        private List<HoldNoteTick> createTicks()
+        protected override void CreateNestedHitObjects()
         {
-            var ret = new List<HoldNoteTick>();
+            base.CreateNestedHitObjects();
 
+            createTicks();
+        }
+
+        private void createTicks()
+        {
             if (tickSpacing == 0)
-                return ret;
+                return;
 
             for (double t = StartTime + tickSpacing; t <= EndTime - tickSpacing; t += tickSpacing)
             {
-                ret.Add(new HoldNoteTick
+                AddNested(new HoldNoteTick
                 {
                     StartTime = t,
                     Column = Column
                 });
             }
 
-            return ret;
         }
 
         /// <summary>
@@ -110,9 +107,9 @@ namespace osu.Game.Rulesets.Mania.Objects
             /// </summary>
             private const double release_window_lenience = 1.5;
 
-            public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+            protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
             {
-                base.ApplyDefaults(controlPointInfo, difficulty);
+                base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
                 HitWindows *= release_window_lenience;
             }

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using Newtonsoft.Json;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Mania.Judgements;
@@ -15,11 +16,12 @@ namespace osu.Game.Rulesets.Mania.Objects
         /// <summary>
         /// The key-press hit window for this note.
         /// </summary>
+        [JsonIgnore]
         public HitWindows HitWindows { get; protected set; } = new HitWindows();
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             HitWindows = new HitWindows(difficulty.OverallDifficulty);
         }

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

@@ -116,7 +116,7 @@ namespace osu.Game.Rulesets.Mania.Scoring
                         AddJudgement(new ManiaJudgement { Result = HitResult.Perfect });
 
                         // Ticks
-                        int tickCount = holdNote.Ticks.Count();
+                        int tickCount = holdNote.NestedHitObjects.OfType<HoldNoteTick>().Count();
                         for (int i = 0; i < tickCount; i++)
                             AddJudgement(new HoldNoteTickJudgement { Result = HitResult.Perfect });
                     }

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

@@ -9,7 +9,6 @@ using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Input;
-using osu.Framework.Lists;
 using osu.Framework.MathUtils;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -44,7 +43,7 @@ namespace osu.Game.Rulesets.Mania.UI
             // Generate the bar lines
             double lastObjectTime = (Objects.LastOrDefault() as IHasEndTime)?.EndTime ?? Objects.LastOrDefault()?.StartTime ?? double.MaxValue;
 
-            SortedList<TimingControlPoint> timingPoints = Beatmap.ControlPointInfo.TimingPoints;
+            var timingPoints = Beatmap.ControlPointInfo.TimingPoints;
             var barLines = new List<DrawableBarLine>();
 
             for (int i = 0; i < timingPoints.Count; i++)

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

@@ -40,6 +40,10 @@
       <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>$(SolutionDir)\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
   </ItemGroup>

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

@@ -9,5 +9,7 @@ namespace osu.Game.Rulesets.Osu.Edit
     public class OsuEditPlayfield : OsuPlayfield
     {
         protected override CursorContainer CreateCursor() => null;
+
+        protected override bool ProxyApproachCircles => false;
     }
 }

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

@@ -57,6 +57,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                     Scale = s.Scale,
                     ComboColour = s.ComboColour,
                     Samples = s.Samples,
+                    SampleControlPoint = s.SampleControlPoint
                 })
             };
 
@@ -66,7 +67,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             AddNested(initialCircle);
 
             var repeatDuration = s.Curve.Distance / s.Velocity;
-            foreach (var tick in s.Ticks)
+            foreach (var tick in s.NestedHitObjects.OfType<SliderTick>())
             {
                 var repeatStartTime = s.StartTime + tick.RepeatIndex * repeatDuration;
                 var fadeInTime = repeatStartTime + (tick.StartTime - repeatStartTime) / 2 - (tick.RepeatIndex == 0 ? TIME_FADEIN : TIME_FADEIN / 2);
@@ -83,7 +84,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 AddNested(drawableTick);
             }
 
-            foreach (var repeatPoint in s.RepeatPoints)
+            foreach (var repeatPoint in s.NestedHitObjects.OfType<RepeatPoint>())
             {
                 var repeatStartTime = s.StartTime + repeatPoint.RepeatIndex * repeatDuration;
                 var fadeInTime = repeatStartTime + (repeatPoint.StartTime - repeatStartTime) / 2 - (repeatPoint.RepeatIndex == 0 ? TIME_FADEIN : TIME_FADEIN / 2);

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

@@ -68,9 +68,9 @@ namespace osu.Game.Rulesets.Osu.Objects
             return HitResult.Miss;
         }
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
         }

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

@@ -74,9 +74,9 @@ namespace osu.Game.Rulesets.Osu.Objects
         public double Velocity;
         public double TickDistance;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
             DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);
@@ -99,75 +99,79 @@ namespace osu.Game.Rulesets.Osu.Objects
 
         public int RepeatAt(double progress) => (int)(progress * RepeatCount);
 
-        public IEnumerable<SliderTick> Ticks
+        protected override void CreateNestedHitObjects()
         {
-            get
+            base.CreateNestedHitObjects();
+
+            createTicks();
+            createRepeatPoints();
+        }
+
+        private void createTicks()
+        {
+            if (TickDistance == 0) return;
+
+            var length = Curve.Distance;
+            var tickDistance = Math.Min(TickDistance, length);
+            var repeatDuration = length / Velocity;
+
+            var minDistanceFromEnd = Velocity * 0.01;
+
+            for (var repeat = 0; repeat < RepeatCount; repeat++)
             {
-                if (TickDistance == 0) yield break;
+                var repeatStartTime = StartTime + repeat * repeatDuration;
+                var reversed = repeat % 2 == 1;
 
-                var length = Curve.Distance;
-                var tickDistance = Math.Min(TickDistance, length);
-                var repeatDuration = length / Velocity;
-
-                var minDistanceFromEnd = Velocity * 0.01;
-
-                for (var repeat = 0; repeat < RepeatCount; repeat++)
+                for (var d = tickDistance; d <= length; d += tickDistance)
                 {
-                    var repeatStartTime = StartTime + repeat * repeatDuration;
-                    var reversed = repeat % 2 == 1;
+                    if (d > length - minDistanceFromEnd)
+                        break;
 
-                    for (var d = tickDistance; d <= length; d += tickDistance)
+                    var distanceProgress = d / length;
+                    var timeProgress = reversed ? 1 - distanceProgress : distanceProgress;
+
+                    AddNested(new SliderTick
                     {
-                        if (d > length - minDistanceFromEnd)
-                            break;
-
-                        var distanceProgress = d / length;
-                        var timeProgress = reversed ? 1 - distanceProgress : distanceProgress;
-
-                        yield return new SliderTick
+                        RepeatIndex = repeat,
+                        StartTime = repeatStartTime + timeProgress * repeatDuration,
+                        Position = Curve.PositionAt(distanceProgress),
+                        StackHeight = StackHeight,
+                        Scale = Scale,
+                        ComboColour = ComboColour,
+                        Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
                         {
-                            RepeatIndex = repeat,
-                            StartTime = repeatStartTime + timeProgress * repeatDuration,
-                            Position = Curve.PositionAt(distanceProgress),
-                            StackHeight = StackHeight,
-                            Scale = Scale,
-                            ComboColour = ComboColour,
-                            Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
-                            {
-                                Bank = s.Bank,
-                                Name = @"slidertick",
-                                Volume = s.Volume
-                            }))
-                        };
-                    }
+                            Bank = s.Bank,
+                            Name = @"slidertick",
+                            Volume = s.Volume
+                        }))
+                    });
                 }
             }
         }
-        public IEnumerable<RepeatPoint> RepeatPoints
+
+        private void createRepeatPoints()
         {
-            get
+            var length = Curve.Distance;
+            var repeatPointDistance = Math.Min(Distance, length);
+            var repeatDuration = length / Velocity;
+
+            for (var repeat = 1; repeat < RepeatCount; repeat++)
             {
-                var length = Curve.Distance;
-                var repeatPointDistance = Math.Min(Distance, length);
-                var repeatDuration = length / Velocity;
-
-                for (var repeat = 1; repeat < RepeatCount; repeat++)
+                for (var d = repeatPointDistance; d <= length; d += repeatPointDistance)
                 {
-                    for (var d = repeatPointDistance; d <= length; d += repeatPointDistance)
-                    {
-                        var repeatStartTime = StartTime + repeat * repeatDuration;
-                        var distanceProgress = d / length;
+                    var repeatStartTime = StartTime + repeat * repeatDuration;
+                    var distanceProgress = d / length;
 
-                        yield return new RepeatPoint
-                        {
-                            RepeatIndex = repeat,
-                            StartTime = repeatStartTime,
-                            Position = Curve.PositionAt(distanceProgress),
-                            StackHeight = StackHeight,
-                            Scale = Scale,
-                            ComboColour = ComboColour,
-                        };
-                    }
+                    AddNested(new RepeatPoint
+                    {
+                        RepeatIndex = repeat,
+                        StartTime = repeatStartTime,
+                        Position = Curve.PositionAt(distanceProgress),
+                        StackHeight = StackHeight,
+                        Scale = Scale,
+                        ComboColour = ComboColour,
+                        Samples = new SampleInfoList(RepeatSamples[repeat])
+                    });
                 }
             }
         }

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

@@ -19,9 +19,9 @@ namespace osu.Game.Rulesets.Osu.Objects
 
         public override bool NewCombo => true;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             SpinsRequired = (int)(Duration / 1000 * BeatmapDifficulty.DifficultyRange(difficulty.OverallDifficulty, 3, 5, 7.5));
 

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

@@ -107,7 +107,7 @@ namespace osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing
                 }
             });
 
-            var scoringTimes = slider.Ticks.Select(t => t.StartTime).Concat(slider.RepeatPoints.Select(r => r.StartTime)).OrderBy(t => t);
+            var scoringTimes = slider.NestedHitObjects.Select(t => t.StartTime);
             foreach (var time in scoringTimes)
                 computeVertex(time);
             computeVertex(slider.EndTime);

osu.Game.Rulesets.Osu/Scoring/OsuPerformanceCalculator.cs

@@ -33,7 +33,7 @@ namespace osu.Game.Rulesets.Osu.Scoring
             countHitCircles = Beatmap.HitObjects.Count(h => h is HitCircle);
 
             beatmapMaxCombo = Beatmap.HitObjects.Count;
-            beatmapMaxCombo += Beatmap.HitObjects.OfType<Slider>().Sum(s => s.RepeatCount + s.Ticks.Count());
+            beatmapMaxCombo += Beatmap.HitObjects.OfType<Slider>().Sum(s => s.NestedHitObjects.Count) + 1;
         }
 
         public override double Calculate(Dictionary<string, double> categoryRatings = null)

osu.Game.Rulesets.Osu/Scoring/OsuScoreProcessor.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System.Collections.Generic;
+using System.Linq;
 using osu.Framework.Extensions;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Judgements;
@@ -39,11 +40,11 @@ namespace osu.Game.Rulesets.Osu.Scoring
                     AddJudgement(new OsuJudgement { Result = HitResult.Great });
 
                     // Ticks
-                    foreach (var unused in slider.Ticks)
+                    foreach (var unused in slider.NestedHitObjects.OfType<SliderTick>())
                         AddJudgement(new OsuJudgement { Result = HitResult.Great });
 
                     //Repeats
-                    foreach (var unused in slider.RepeatPoints)
+                    foreach (var unused in slider.NestedHitObjects.OfType<RepeatPoint>())
                         AddJudgement(new OsuJudgement { Result = HitResult.Great });
                 }
 

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

@@ -25,6 +25,10 @@ namespace osu.Game.Rulesets.Osu.UI
 
         public override bool ProvidingUserCursor => true;
 
+        // Todo: This should not be a thing, but is currently required for the editor
+        // https://github.com/ppy/osu-framework/issues/1283
+        protected virtual bool ProxyApproachCircles => true;
+
         public static readonly Vector2 BASE_SIZE = new Vector2(512, 384);
 
         public override Vector2 Size
@@ -80,7 +84,7 @@ namespace osu.Game.Rulesets.Osu.UI
             h.Depth = (float)h.HitObject.StartTime;
 
             var c = h as IDrawableHitObjectWithProxiedApproach;
-            if (c != null)
+            if (c != null && ProxyApproachCircles)
                 approachCircles.Add(c.ProxiedLayer.CreateProxy());
 
             base.Add(h);

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

@@ -43,7 +43,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 RelativeChildSize = new Vector2((float)HitObject.Duration, 1)
             });
 
-            foreach (var tick in drumRoll.Ticks)
+            foreach (var tick in drumRoll.NestedHitObjects.OfType<DrumRollTick>())
             {
                 var newTick = new DrawableDrumRollTick(tick);
                 newTick.OnJudgement += onTickJudgement;

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

@@ -67,7 +67,8 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
             validKeyPressed = HitActions.Contains(action);
 
-            return UpdateJudgement(true);
+            // Only count this as handled if the new judgement is a hit
+            return UpdateJudgement(true) && Judgements.LastOrDefault()?.IsHit == true;
         }
 
         protected override void Update()

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

@@ -83,7 +83,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 return false;
 
             // Assume the intention was to hit the strong hit with both keys only if the first key is still being held down
-            return firstKeyHeld && UpdateJudgement(true);
+            return firstKeyHeld && UpdateJudgement(true) && Judgements.LastOrDefault()?.IsHit == true;
         }
     }
 }

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

@@ -3,7 +3,6 @@
 
 using osu.Game.Rulesets.Objects.Types;
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -37,47 +36,40 @@ namespace osu.Game.Rulesets.Taiko.Objects
         /// </summary>
         public double RequiredGreatHits { get; protected set; }
 
-        /// <summary>
-        /// Total number of drum roll ticks.
-        /// </summary>
-        public int TotalTicks => Ticks.Count();
-
-        /// <summary>
-        /// Initializes the drum roll ticks if not initialized and returns them.
-        /// </summary>
-        public IEnumerable<DrumRollTick> Ticks => ticks ?? (ticks = createTicks());
-
-        private List<DrumRollTick> ticks;
-
         /// <summary>
         /// The length (in milliseconds) between ticks of this drumroll.
         /// <para>Half of this value is the hit window of the ticks.</para>
         /// </summary>
         private double tickSpacing = 100;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
 
             tickSpacing = timingPoint.BeatLength / TickRate;
 
-            RequiredGoodHits = TotalTicks * Math.Min(0.15, 0.05 + 0.10 / 6 * difficulty.OverallDifficulty);
-            RequiredGreatHits = TotalTicks * Math.Min(0.30, 0.10 + 0.20 / 6 * difficulty.OverallDifficulty);
+            RequiredGoodHits = NestedHitObjects.Count * Math.Min(0.15, 0.05 + 0.10 / 6 * difficulty.OverallDifficulty);
+            RequiredGreatHits = NestedHitObjects.Count * Math.Min(0.30, 0.10 + 0.20 / 6 * difficulty.OverallDifficulty);
         }
 
-        private List<DrumRollTick> createTicks()
+        protected override void CreateNestedHitObjects()
         {
-            var ret = new List<DrumRollTick>();
+            base.CreateNestedHitObjects();
 
+            createTicks();
+        }
+
+        private void createTicks()
+        {
             if (tickSpacing == 0)
-                return ret;
+                return;
 
             bool first = true;
             for (double t = StartTime; t < EndTime + tickSpacing / 2; t += tickSpacing)
             {
-                ret.Add(new DrumRollTick
+                AddNested(new DrumRollTick
                 {
                     FirstTick = first,
                     TickSpacing = tickSpacing,
@@ -93,8 +85,6 @@ namespace osu.Game.Rulesets.Taiko.Objects
 
                 first = false;
             }
-
-            return ret;
         }
     }
-}
+}

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

@@ -23,9 +23,9 @@ namespace osu.Game.Rulesets.Taiko.Objects
         /// </summary>
         public double HitWindowMiss = 95;
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             HitWindowGreat = BeatmapDifficulty.DifficultyRange(difficulty.OverallDifficulty, 50, 35, 20);
             HitWindowGood = BeatmapDifficulty.DifficultyRange(difficulty.OverallDifficulty, 120, 80, 50);

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

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Taiko.Objects;
@@ -83,7 +84,7 @@ namespace osu.Game.Rulesets.Taiko.Replays
                 }
                 else if (drumRoll != null)
                 {
-                    foreach (var tick in drumRoll.Ticks)
+                    foreach (var tick in drumRoll.NestedHitObjects.OfType<DrumRollTick>())
                     {
                         Frames.Add(new ReplayFrame(tick.StartTime, null, null, hitButton ? ReplayButtonState.Left1 : ReplayButtonState.Left2));
                         hitButton = !hitButton;

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

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -88,7 +89,7 @@ namespace osu.Game.Rulesets.Taiko.Scoring
                 }
                 else if (obj is DrumRoll)
                 {
-                    for (int i = 0; i < ((DrumRoll)obj).TotalTicks; i++)
+                    for (int i = 0; i < ((DrumRoll)obj).NestedHitObjects.OfType<DrumRollTick>().Count(); i++)
                     {
                         AddJudgement(new TaikoDrumRollTickJudgement { Result = HitResult.Great });
 

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

@@ -16,10 +16,17 @@ using osu.Framework.Extensions.Color4Extensions;
 using System.Linq;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
+using osu.Framework.Input.Bindings;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
+using System.Collections.Generic;
+using osu.Game.Audio;
+using System;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
-    public class TaikoPlayfield : ScrollingPlayfield
+    public class TaikoPlayfield : ScrollingPlayfield, IKeyBindingHandler<TaikoAction>
     {
         /// <summary>
         /// Default height of a <see cref="TaikoPlayfield"/> when inside a <see cref="TaikoRulesetContainer"/>.
@@ -54,9 +61,13 @@ namespace osu.Game.Rulesets.Taiko.UI
         private readonly Box overlayBackground;
         private readonly Box background;
 
-        public TaikoPlayfield()
+        private readonly ControlPointInfo controlPointInfo;
+        private Dictionary<SampleControlPoint, DrumSamples> drumSampleMappings;
+
+        public TaikoPlayfield(ControlPointInfo controlPointInfo)
             : base(Axes.X)
         {
+            this.controlPointInfo = controlPointInfo;
             AddRangeInternal(new Drawable[]
             {
                 backgroundContainer = new Container
@@ -194,8 +205,19 @@ namespace osu.Game.Rulesets.Taiko.UI
         }
 
         [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
+        private void load(OsuColour colours, AudioManager audio)
         {
+            drumSampleMappings = new Dictionary<SampleControlPoint, DrumSamples>();
+            foreach (var s in controlPointInfo.SamplePoints)
+            {
+                drumSampleMappings.Add(s,
+                    new DrumSamples
+                    {
+                        Centre = s.GetSampleInfo().GetChannel(audio.Sample),
+                        Rim = s.GetSampleInfo(SampleInfo.HIT_CLAP).GetChannel(audio.Sample)
+                    });
+            }
+
             overlayBackgroundContainer.BorderColour = colours.Gray0;
             overlayBackground.Colour = colours.Gray1;
 
@@ -249,7 +271,9 @@ namespace osu.Game.Rulesets.Taiko.UI
                     {
                         topLevelHitContainer.Add(judgedObject.CreateProxy());
                     }
-                    catch { }
+                    catch
+                    {
+                    }
                 }
 
                 hitExplosionContainer.Add(new HitExplosion(judgedObject, isRim));
@@ -258,5 +282,28 @@ namespace osu.Game.Rulesets.Taiko.UI
                     kiaiExplosionContainer.Add(new KiaiHitExplosion(judgedObject, isRim));
             }
         }
+
+        public bool OnPressed(TaikoAction action)
+        {
+            var samplePoint = controlPointInfo.SamplePointAt(Clock.CurrentTime);
+
+            if (!drumSampleMappings.TryGetValue(samplePoint, out var samples))
+                throw new InvalidOperationException("Current sample set not found.");
+
+            if (action == TaikoAction.LeftCentre || action == TaikoAction.RightCentre)
+                samples.Centre.Play();
+            else
+                samples.Rim.Play();
+
+            return true;
+        }
+
+        public bool OnReleased(TaikoAction action) => false;
+
+        private class DrumSamples
+        {
+            public SampleChannel Centre;
+            public SampleChannel Rim;
+        }
     }
 }

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

@@ -93,7 +93,7 @@ namespace osu.Game.Rulesets.Taiko.UI
 
         public override PassThroughInputManager CreateInputManager() => new TaikoInputManager(Ruleset.RulesetInfo);
 
-        protected override Playfield CreatePlayfield() => new TaikoPlayfield
+        protected override Playfield CreatePlayfield() => new TaikoPlayfield(Beatmap.ControlPointInfo)
         {
             Anchor = Anchor.CentreLeft,
             Origin = Anchor.CentreLeft

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

@@ -146,8 +146,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.AreEqual(116999, difficultyPoint.Time);
                 Assert.AreEqual(0.75000000000000189d, difficultyPoint.SpeedMultiplier);
 
-                Assert.AreEqual(34, controlPoints.SoundPoints.Count);
-                var soundPoint = controlPoints.SoundPoints[0];
+                Assert.AreEqual(34, controlPoints.SamplePoints.Count);
+                var soundPoint = controlPoints.SamplePoints[0];
                 Assert.AreEqual(956, soundPoint.Time);
                 Assert.AreEqual("soft", soundPoint.SampleBank);
                 Assert.AreEqual(60, soundPoint.SampleVolume);

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

@@ -0,0 +1,176 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.IO;
+using System.Linq;
+using DeepEqual.Syntax;
+using NUnit.Framework;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.IO.Serialization;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Tests.Resources;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Tests.Beatmaps.Formats
+{
+    [TestFixture]
+    public class OsuJsonDecoderTest
+    {
+        private const string normal = "Soleily - Renatus (Gamu) [Insane].osu";
+        private const string marathon = "Within Temptation - The Unforgiving (Armin) [Marathon].osu";
+        private const string with_sb = "Kozato snow - Rengetsu Ouka (_Kiva) [Yuki YukI].osu";
+
+        [Test]
+        public void TestDecodeMetadata()
+        {
+            var beatmap = decodeAsJson(normal);
+            var meta = beatmap.BeatmapInfo.Metadata;
+            Assert.AreEqual(241526, meta.OnlineBeatmapSetID);
+            Assert.AreEqual("Soleily", meta.Artist);
+            Assert.AreEqual("Soleily", meta.ArtistUnicode);
+            Assert.AreEqual("03. Renatus - Soleily 192kbps.mp3", meta.AudioFile);
+            Assert.AreEqual("Gamu", meta.AuthorString);
+            Assert.AreEqual("machinetop_background.jpg", meta.BackgroundFile);
+            Assert.AreEqual(164471, meta.PreviewTime);
+            Assert.AreEqual(string.Empty, meta.Source);
+            Assert.AreEqual("MBC7 Unisphere 地球ヤバイEP Chikyu Yabai", meta.Tags);
+            Assert.AreEqual("Renatus", meta.Title);
+            Assert.AreEqual("Renatus", meta.TitleUnicode);
+        }
+
+        [Test]
+        public void TestDecodeGeneral()
+        {
+            var beatmap = decodeAsJson(normal);
+            var beatmapInfo = beatmap.BeatmapInfo;
+            Assert.AreEqual(0, beatmapInfo.AudioLeadIn);
+            Assert.AreEqual(false, beatmapInfo.Countdown);
+            Assert.AreEqual(0.7f, beatmapInfo.StackLeniency);
+            Assert.AreEqual(false, beatmapInfo.SpecialStyle);
+            Assert.IsTrue(beatmapInfo.RulesetID == 0);
+            Assert.AreEqual(false, beatmapInfo.LetterboxInBreaks);
+            Assert.AreEqual(false, beatmapInfo.WidescreenStoryboard);
+        }
+
+        [Test]
+        public void TestDecodeEditor()
+        {
+            var beatmap = decodeAsJson(normal);
+            var beatmapInfo = beatmap.BeatmapInfo;
+
+            int[] expectedBookmarks =
+            {
+                11505, 22054, 32604, 43153, 53703, 64252, 74802, 85351,
+                95901, 106450, 116999, 119637, 130186, 140735, 151285,
+                161834, 164471, 175020, 185570, 196119, 206669, 209306
+            };
+            Assert.AreEqual(expectedBookmarks.Length, beatmapInfo.Bookmarks.Length);
+            for (int i = 0; i < expectedBookmarks.Length; i++)
+                Assert.AreEqual(expectedBookmarks[i], beatmapInfo.Bookmarks[i]);
+            Assert.AreEqual(1.8, beatmapInfo.DistanceSpacing);
+            Assert.AreEqual(4, beatmapInfo.BeatDivisor);
+            Assert.AreEqual(4, beatmapInfo.GridSize);
+            Assert.AreEqual(2, beatmapInfo.TimelineZoom);
+        }
+
+        [Test]
+        public void TestDecodeDifficulty()
+        {
+            var beatmap = decodeAsJson(normal);
+            var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
+            Assert.AreEqual(6.5f, difficulty.DrainRate);
+            Assert.AreEqual(4, difficulty.CircleSize);
+            Assert.AreEqual(8, difficulty.OverallDifficulty);
+            Assert.AreEqual(9, difficulty.ApproachRate);
+            Assert.AreEqual(1.8f, difficulty.SliderMultiplier);
+            Assert.AreEqual(2, difficulty.SliderTickRate);
+        }
+
+        [Test]
+        public void TestDecodeColors()
+        {
+            var beatmap = decodeAsJson(normal);
+            Color4[] expected =
+            {
+                new Color4(142, 199, 255, 255),
+                new Color4(255, 128, 128, 255),
+                new Color4(128, 255, 255, 255),
+                new Color4(128, 255, 128, 255),
+                new Color4(255, 187, 255, 255),
+                new Color4(255, 177, 140, 255),
+            };
+            Assert.AreEqual(expected.Length, beatmap.ComboColors.Count);
+            for (int i = 0; i < expected.Length; i++)
+                Assert.AreEqual(expected[i], beatmap.ComboColors[i]);
+        }
+
+        [Test]
+        public void TestDecodeHitObjects()
+        {
+            var beatmap = decodeAsJson(normal);
+
+            var curveData = beatmap.HitObjects[0] as IHasCurve;
+            var positionData = beatmap.HitObjects[0] as IHasPosition;
+
+            Assert.IsNotNull(positionData);
+            Assert.IsNotNull(curveData);
+            Assert.AreEqual(new Vector2(192, 168), positionData.Position);
+            Assert.AreEqual(956, beatmap.HitObjects[0].StartTime);
+            Assert.IsTrue(beatmap.HitObjects[0].Samples.Any(s => s.Name == SampleInfo.HIT_NORMAL));
+
+            positionData = beatmap.HitObjects[1] as IHasPosition;
+
+            Assert.IsNotNull(positionData);
+            Assert.AreEqual(new Vector2(304, 56), positionData.Position);
+            Assert.AreEqual(1285, beatmap.HitObjects[1].StartTime);
+            Assert.IsTrue(beatmap.HitObjects[1].Samples.Any(s => s.Name == SampleInfo.HIT_CLAP));
+        }
+
+        [TestCase(normal)]
+        [TestCase(marathon)]
+        // Currently fails:
+        // [TestCase(with_sb)]
+        public void TestParity(string beatmap)
+        {
+            var beatmaps = decode(beatmap);
+            beatmaps.jsonDecoded.ShouldDeepEqual(beatmaps.legacyDecoded);
+        }
+
+        /// <summary>
+        /// Reads a .osu file first with a <see cref="LegacyBeatmapDecoder"/>, serializes the resulting <see cref="Beatmap"/> to JSON
+        /// and then deserializes the result back into a <see cref="Beatmap"/> through an <see cref="JsonBeatmapDecoder"/>.
+        /// </summary>
+        /// <param name="filename">The .osu file to decode.</param>
+        /// <returns>The <see cref="Beatmap"/> after being decoded by an <see cref="LegacyBeatmapDecoder"/>.</returns>
+        private Beatmap decodeAsJson(string filename) => decode(filename).jsonDecoded;
+
+        /// <summary>
+        /// Reads a .osu file first with a <see cref="LegacyBeatmapDecoder"/>, serializes the resulting <see cref="Beatmap"/> to JSON
+        /// and then deserializes the result back into a <see cref="Beatmap"/> through an <see cref="JsonBeatmapDecoder"/>.
+        /// </summary>
+        /// <param name="filename">The .osu file to decode.</param>
+        /// <returns>The <see cref="Beatmap"/> after being decoded by an <see cref="LegacyBeatmapDecoder"/>.</returns>
+        private (Beatmap legacyDecoded, Beatmap jsonDecoded) decode(string filename)
+        {
+            using (var stream = Resource.OpenResource(filename))
+            using (var sr = new StreamReader(stream))
+            {
+
+                var legacyDecoded = new LegacyBeatmapDecoder().DecodeBeatmap(sr);
+                using (var ms = new MemoryStream())
+                using (var sw = new StreamWriter(ms))
+                using (var sr2 = new StreamReader(ms))
+                {
+                    sw.Write(legacyDecoded.Serialize());
+                    sw.Flush();
+
+                    ms.Position = 0;
+                    return (legacyDecoded, new JsonBeatmapDecoder().DecodeBeatmap(sr2));
+                }
+            }
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseBeatSyncedContainer.cs

@@ -7,13 +7,13 @@ using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Lists;
 using osu.Framework.Timing;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using OpenTK.Graphics;
+using osu.Framework.Lists;
 
 namespace osu.Game.Tests.Visual
 {

osu.Game.Tests/Visual/TestCaseBeatmapCarousel.cs

@@ -69,6 +69,7 @@ namespace osu.Game.Tests.Visual
             testSorting();
 
             testRemoveAll();
+            testEmptyTraversal();
         }
 
         private void ensureRandomFetchSuccess() =>
@@ -103,6 +104,8 @@ namespace osu.Game.Tests.Visual
             AddAssert($"{count} {(diff ? "diffs" : "sets")} visible", () =>
                 carousel.Items.Count(s => (diff ? s.Item is CarouselBeatmap : s.Item is CarouselBeatmapSet) && s.Item.Visible) == count);
 
+        private void checkNoSelection() => AddAssert("Selection is null", () => currentSelection == null);
+
         private void nextRandom() =>
             AddStep("select random next", () =>
             {
@@ -274,9 +277,23 @@ namespace osu.Game.Tests.Visual
                 return false;
             }, "Remove all");
 
-            AddAssert("Selection is null", () => currentSelection == null);
+            checkNoSelection();
         }
 
+        private void testEmptyTraversal()
+        {
+            advanceSelection(direction: 1, diff: false);
+            checkNoSelection();
+
+            advanceSelection(direction: 1, diff: true);
+            checkNoSelection();
+
+            advanceSelection(direction: -1, diff: false);
+            checkNoSelection();
+
+            advanceSelection(direction: -1, diff: true);
+            checkNoSelection();
+        }
 
         private BeatmapSetInfo createTestBeatmapSet(int i)
         {

osu.Game.Tests/Visual/TestCaseEditorSummaryTimeline.cs

@@ -56,7 +56,7 @@ namespace osu.Game.Tests.Visual
                 b.ControlPointInfo.EffectPoints.Add(new EffectControlPoint { Time = random.Next(0, length) });
 
             for (int i = 0; i < random.Next(1, 5); i++)
-                b.ControlPointInfo.SoundPoints.Add(new SoundControlPoint { Time = random.Next(0, length) });
+                b.ControlPointInfo.SamplePoints.Add(new SampleControlPoint { Time = random.Next(0, length) });
 
             b.BeatmapInfo.Bookmarks = new int[random.Next(10, 30)];
             for (int i = 0; i < b.BeatmapInfo.Bookmarks.Length; i++)

osu.Game.Tests/Visual/TestCaseLeaderboard.cs

@@ -36,6 +36,7 @@ namespace osu.Game.Tests.Visual
             AddStep(@"Network failure", () => leaderboard.SetRetrievalState(PlaceholderState.NetworkFailure));
             AddStep(@"No supporter", () => leaderboard.SetRetrievalState(PlaceholderState.NotSupporter));
             AddStep(@"Not logged in", () => leaderboard.SetRetrievalState(PlaceholderState.NotLoggedIn));
+            AddStep(@"Unavailable", () => leaderboard.SetRetrievalState(PlaceholderState.Unavailable));
             AddStep(@"Real beatmap", realBeatmap);
         }
 

osu.Game.Tests/Visual/TestCaseNotificationOverlay.cs

@@ -3,19 +3,17 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using NUnit.Framework;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.MathUtils;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 
 namespace osu.Game.Tests.Visual
 {
-    [TestFixture]
     public class TestCaseNotificationOverlay : OsuTestCase
     {
         private readonly NotificationOverlay manager;
+        private readonly List<ProgressNotification> progressingNotifications = new List<ProgressNotification>();
 
         public TestCaseNotificationOverlay()
         {
@@ -24,15 +22,14 @@ namespace osu.Game.Tests.Visual
             Content.Add(manager = new NotificationOverlay
             {
                 Anchor = Anchor.TopRight,
-                Origin = Anchor.TopRight,
+                Origin = Anchor.TopRight
             });
 
-            AddToggleStep(@"show", state => manager.State = state ? Visibility.Visible : Visibility.Hidden);
-
-            AddStep(@"simple #1", sendNotification1);
-            AddStep(@"simple #2", sendNotification2);
-            AddStep(@"progress #1", sendProgress1);
-            AddStep(@"progress #2", sendProgress2);
+            AddStep(@"toggle", manager.ToggleVisibility);
+            AddStep(@"simple #1", sendHelloNotification);
+            AddStep(@"simple #2", sendAmazingNotification);
+            AddStep(@"progress #1", sendUploadProgress);
+            AddStep(@"progress #2", sendDownloadProgress);
             AddStep(@"barrage", () => sendBarrage());
         }
 
@@ -41,16 +38,16 @@ namespace osu.Game.Tests.Visual
             switch (RNG.Next(0, 4))
             {
                 case 0:
-                    sendNotification1();
+                    sendHelloNotification();
                     break;
                 case 1:
-                    sendNotification2();
+                    sendAmazingNotification();
                     break;
                 case 2:
-                    sendProgress1();
+                    sendUploadProgress();
                     break;
                 case 3:
-                    sendProgress2();
+                    sendDownloadProgress();
                     break;
             }
 
@@ -80,7 +77,7 @@ namespace osu.Game.Tests.Visual
             }
         }
 
-        private void sendProgress2()
+        private void sendDownloadProgress()
         {
             var n = new ProgressNotification
             {
@@ -91,9 +88,7 @@ namespace osu.Game.Tests.Visual
             progressingNotifications.Add(n);
         }
 
-        private readonly List<ProgressNotification> progressingNotifications = new List<ProgressNotification>();
-
-        private void sendProgress1()
+        private void sendUploadProgress()
         {
             var n = new ProgressNotification
             {
@@ -104,12 +99,12 @@ namespace osu.Game.Tests.Visual
             progressingNotifications.Add(n);
         }
 
-        private void sendNotification2()
+        private void sendAmazingNotification()
         {
             manager.Post(new SimpleNotification { Text = @"You are amazing" });
         }
 
-        private void sendNotification1()
+        private void sendHelloNotification()
         {
             manager.Post(new SimpleNotification { Text = @"Welcome to osu!. Enjoy your stay!" });
         }

osu.Game.Tests/Visual/TestCaseRankGraph.cs

@@ -0,0 +1,123 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Overlays.Profile;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using OpenTK;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using System.Collections.Generic;
+using System;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseRankGraph : OsuTestCase
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(RankGraph),
+            typeof(LineGraph)
+        };
+
+        public TestCaseRankGraph()
+        {
+            RankGraph graph;
+
+            var data = new int[89];
+            var dataWithZeros = new int[89];
+            var smallData = new int[89];
+
+            for (int i = 0; i < 89; i++)
+                data[i] = dataWithZeros[i] = (i + 1) * 1000;
+
+            for (int i = 20; i < 60; i++)
+                dataWithZeros[i] = 0;
+
+            for (int i = 79; i < 89; i++)
+                smallData[i] = 100000 - i * 1000;
+
+            Add(new Container
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Size = new Vector2(300, 150),
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = OsuColour.Gray(0.2f)
+                    },
+                    graph = new RankGraph
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                    }
+                }
+            });
+
+            AddStep("null user", () => graph.User.Value = null);
+            AddStep("rank only", () =>
+            {
+                graph.User.Value = new User
+                {
+                    Statistics = new UserStatistics
+                    {
+                        Rank = 123456,
+                        PP = 12345,
+                    }
+                };
+            });
+
+            AddStep("with rank history", () =>
+            {
+                graph.User.Value = new User
+                {
+                    Statistics = new UserStatistics
+                    {
+                        Rank = 89000,
+                        PP = 12345,
+                    },
+                    RankHistory = new User.RankHistoryData
+                    {
+                        Data = data,
+                    }
+                };
+            });
+
+            AddStep("with zero values", () =>
+            {
+                graph.User.Value = new User
+                {
+                    Statistics = new UserStatistics
+                    {
+                        Rank = 89000,
+                        PP = 12345,
+                    },
+                    RankHistory = new User.RankHistoryData
+                    {
+                        Data = dataWithZeros,
+                    }
+                };
+            });
+
+            AddStep("small amount of data", () =>
+            {
+                graph.User.Value = new User
+                {
+                    Statistics = new UserStatistics
+                    {
+                        Rank = 12000,
+                        PP = 12345,
+                    },
+                    RankHistory = new User.RankHistoryData
+                    {
+                        Data = smallData,
+                    }
+                };
+            });
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseUserProfile.cs

@@ -2,14 +2,25 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
+using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
+using osu.Game.Overlays.Profile;
 using osu.Game.Users;
 
 namespace osu.Game.Tests.Visual
 {
     public class TestCaseUserProfile : OsuTestCase
     {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(ProfileHeader),
+            typeof(UserProfileOverlay),
+            typeof(RankGraph),
+            typeof(LineGraph),
+        };
+
         public TestCaseUserProfile()
         {
             var profile = new UserProfileOverlay();

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

@@ -30,6 +30,9 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="DeepEqual, Version=1.6.0.0, Culture=neutral, PublicKeyToken=null">
+      <HintPath>$(SolutionDir)\packages\DeepEqual.1.6.0.0\lib\net40\DeepEqual.dll</HintPath>
+    </Reference>
     <Reference Include="nunit.framework, Version=3.8.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
@@ -83,6 +86,7 @@
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Beatmaps\Formats\OsuJsonDecoderTest.cs" />
     <Compile Include="Beatmaps\Formats\LegacyStoryboardDecoderTest.cs" />
     <Compile Include="Beatmaps\IO\OszArchiveReaderTest.cs" />
     <Compile Include="Beatmaps\IO\ImportBeatmapTest.cs" />
@@ -130,6 +134,7 @@
     <Compile Include="Visual\TestCaseOsuGame.cs" />
     <Compile Include="Visual\TestCasePlaybackControl.cs" />
     <Compile Include="Visual\TestCasePlaySongSelect.cs" />
+    <Compile Include="Visual\TestCaseRankGraph.cs" />
     <Compile Include="Visual\TestCaseReplay.cs" />
     <Compile Include="Visual\TestCaseReplaySettingsOverlay.cs" />
     <Compile Include="Visual\TestCaseResults.cs" />
@@ -152,6 +157,8 @@
   <ItemGroup>
     <EmbeddedResource Include="Resources\Soleily - Renatus %28Gamu%29 [Insane].osu" />
     <EmbeddedResource Include="Resources\Himeringo - Yotsuya-san ni Yoroshiku %28RLC%29 [Winber1%27s Extreme].osu" />
+    <EmbeddedResource Include="Resources\Within Temptation - The Unforgiving %28Armin%29 [Marathon].osu" />
+    <EmbeddedResource Include="Resources\Kozato snow - Rengetsu Ouka %28_Kiva%29 [Yuki YukI].osu" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>

osu.Game.Tests/packages.config

@@ -4,6 +4,7 @@ Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 -->
 <packages>
+  <package id="DeepEqual" version="1.6.0.0" targetFramework="net461" />
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
   <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net461" />

osu.Game/Audio/SampleInfo.cs

@@ -1,8 +1,12 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using osu.Framework.Audio.Sample;
+
 namespace osu.Game.Audio
 {
+    [Serializable]
     public class SampleInfo
     {
         public const string HIT_WHISTLE = @"hitwhistle";
@@ -10,6 +14,13 @@ namespace osu.Game.Audio
         public const string HIT_NORMAL = @"hitnormal";
         public const string HIT_CLAP = @"hitclap";
 
+        public SampleChannel GetChannel(SampleManager manager)
+        {
+            var channel = manager.Get($"Gameplay/{Bank}-{Name}");
+            channel.Volume.Value = Volume / 100.0;
+            return channel;
+        }
+
         /// <summary>
         /// The bank to load the sample from.
         /// </summary>

osu.Game/Beatmaps/Beatmap.cs

@@ -8,19 +8,21 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.IO.Serialization;
+using Newtonsoft.Json;
+using osu.Game.IO.Serialization.Converters;
 
 namespace osu.Game.Beatmaps
 {
     /// <summary>
     /// A Beatmap containing converted HitObjects.
     /// </summary>
-    public class Beatmap<T>
+    public class Beatmap<T> : IJsonSerializable
         where T : HitObject
     {
         public BeatmapInfo BeatmapInfo = new BeatmapInfo();
         public ControlPointInfo ControlPointInfo = new ControlPointInfo();
         public List<BreakPeriod> Breaks = new List<BreakPeriod>();
-        public readonly List<Color4> ComboColors = new List<Color4>
+        public List<Color4> ComboColors = new List<Color4>
         {
             new Color4(17, 136, 170, 255),
             new Color4(102, 136, 0, 255),
@@ -28,16 +30,19 @@ namespace osu.Game.Beatmaps
             new Color4(121, 9, 13, 255)
         };
 
+        [JsonIgnore]
         public BeatmapMetadata Metadata => BeatmapInfo?.Metadata ?? BeatmapInfo?.BeatmapSet?.Metadata;
 
         /// <summary>
         /// The HitObjects this Beatmap contains.
         /// </summary>
+        [JsonConverter(typeof(TypedListConverter<HitObject>))]
         public List<T> HitObjects = new List<T>();
 
         /// <summary>
         /// Total amount of break time in the beatmap.
         /// </summary>
+        [JsonIgnore]
         public double TotalBreakTime => Breaks.Sum(b => b.Duration);
 
         /// <summary>

osu.Game/Beatmaps/BeatmapDifficulty.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
 
 namespace osu.Game.Beatmaps
 {
@@ -13,6 +14,7 @@ namespace osu.Game.Beatmaps
         public const float DEFAULT_DIFFICULTY = 5;
 
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [JsonIgnore]
         public int ID { get; set; }
 
         public float DrainRate { get; set; } = DEFAULT_DIFFICULTY;

osu.Game/Beatmaps/BeatmapInfo.cs

@@ -12,9 +12,11 @@ using osu.Game.Rulesets;
 
 namespace osu.Game.Beatmaps
 {
+    [Serializable]
     public class BeatmapInfo : IEquatable<BeatmapInfo>, IJsonSerializable, IHasPrimaryKey
     {
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [JsonIgnore]
         public int ID { get; set; }
 
         //TODO: should be in database
@@ -38,13 +40,16 @@ namespace osu.Game.Beatmaps
             set { onlineBeatmapSetID = value > 0 ? value : null; }
         }
 
+        [JsonIgnore]
         public int BeatmapSetInfoID { get; set; }
 
         [Required]
+        [JsonIgnore]
         public BeatmapSetInfo BeatmapSet { get; set; }
 
         public BeatmapMetadata Metadata { get; set; }
 
+        [JsonIgnore]
         public int BaseDifficultyID { get; set; }
 
         public BeatmapDifficulty BaseDifficulty { get; set; }
@@ -60,6 +65,7 @@ namespace osu.Game.Beatmaps
         [JsonProperty("file_sha2")]
         public string Hash { get; set; }
 
+        [JsonIgnore]
         public bool Hidden { get; set; }
 
         /// <summary>

osu.Game/Beatmaps/BeatmapMetadata.cs

@@ -10,9 +10,11 @@ using osu.Game.Users;
 
 namespace osu.Game.Beatmaps
 {
+    [Serializable]
     public class BeatmapMetadata : IEquatable<BeatmapMetadata>
     {
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [JsonIgnore]
         public int ID { get; set; }
 
         private int? onlineBeatmapSetID;
@@ -30,7 +32,10 @@ namespace osu.Game.Beatmaps
         public string Artist { get; set; }
         public string ArtistUnicode { get; set; }
 
+        [JsonIgnore]
         public List<BeatmapInfo> Beatmaps { get; set; }
+
+        [JsonIgnore]
         public List<BeatmapSetInfo> BeatmapSets { get; set; }
 
         /// <summary>
@@ -47,6 +52,7 @@ namespace osu.Game.Beatmaps
         /// <summary>
         /// The author of the beatmaps in this set.
         /// </summary>
+        [JsonIgnore]
         public User Author;
 
         public string Source { get; set; }
@@ -59,6 +65,7 @@ namespace osu.Game.Beatmaps
 
         public override string ToString() => $"{Artist} - {Title} ({Author})";
 
+        [JsonIgnore]
         public string[] SearchableTerms => new[]
         {
             Author?.Username,

osu.Game/Beatmaps/ControlPoints/ControlPointInfo.cs

@@ -4,31 +4,37 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Newtonsoft.Json;
 using osu.Framework.Lists;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
+    [Serializable]
     public class ControlPointInfo
     {
         /// <summary>
         /// All timing points.
         /// </summary>
-        public readonly SortedList<TimingControlPoint> TimingPoints = new SortedList<TimingControlPoint>(Comparer<TimingControlPoint>.Default);
+        [JsonProperty]
+        public SortedList<TimingControlPoint> TimingPoints { get; private set; } = new SortedList<TimingControlPoint>(Comparer<TimingControlPoint>.Default);
 
         /// <summary>
         /// All difficulty points.
         /// </summary>
-        public readonly SortedList<DifficultyControlPoint> DifficultyPoints = new SortedList<DifficultyControlPoint>(Comparer<DifficultyControlPoint>.Default);
+        [JsonProperty]
+        public SortedList<DifficultyControlPoint> DifficultyPoints { get; private set; } = new SortedList<DifficultyControlPoint>(Comparer<DifficultyControlPoint>.Default);
 
         /// <summary>
         /// All sound points.
         /// </summary>
-        public readonly SortedList<SoundControlPoint> SoundPoints = new SortedList<SoundControlPoint>(Comparer<SoundControlPoint>.Default);
+        [JsonProperty]
+        public SortedList<SampleControlPoint> SamplePoints { get; private set; } = new SortedList<SampleControlPoint>(Comparer<SampleControlPoint>.Default);
 
         /// <summary>
         /// All effect points.
         /// </summary>
-        public readonly SortedList<EffectControlPoint> EffectPoints = new SortedList<EffectControlPoint>(Comparer<EffectControlPoint>.Default);
+        [JsonProperty]
+        public SortedList<EffectControlPoint> EffectPoints { get; private set; } = new SortedList<EffectControlPoint>(Comparer<EffectControlPoint>.Default);
 
         /// <summary>
         /// Finds the difficulty control point that is active at <paramref name="time"/>.
@@ -49,7 +55,7 @@ namespace osu.Game.Beatmaps.ControlPoints
         /// </summary>
         /// <param name="time">The time to find the sound control point at.</param>
         /// <returns>The sound control point.</returns>
-        public SoundControlPoint SoundPointAt(double time) => binarySearch(SoundPoints, time);
+        public SampleControlPoint SamplePointAt(double time) => binarySearch(SamplePoints, time, SamplePoints.FirstOrDefault());
 
         /// <summary>
         /// Finds the timing control point that is active at <paramref name="time"/>.
@@ -58,18 +64,21 @@ namespace osu.Game.Beatmaps.ControlPoints
         /// <returns>The timing control point.</returns>
         public TimingControlPoint TimingPointAt(double time) => binarySearch(TimingPoints, time, TimingPoints.FirstOrDefault());
 
+        [JsonIgnore]
         /// <summary>
         /// Finds the maximum BPM represented by any timing control point.
         /// </summary>
         public double BPMMaximum =>
             60000 / (TimingPoints.OrderBy(c => c.BeatLength).FirstOrDefault() ?? new TimingControlPoint()).BeatLength;
 
+        [JsonIgnore]
         /// <summary>
         /// Finds the minimum BPM represented by any timing control point.
         /// </summary>
         public double BPMMinimum =>
             60000 / (TimingPoints.OrderByDescending(c => c.BeatLength).FirstOrDefault() ?? new TimingControlPoint()).BeatLength;
 
+        [JsonIgnore]
         /// <summary>
         /// Finds the mode BPM (most common BPM) represented by the control points.
         /// </summary>
@@ -108,4 +117,4 @@ namespace osu.Game.Beatmaps.ControlPoints
             return list[index - 1];
         }
     }
-}
+}

osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs

@@ -0,0 +1,34 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Audio;
+
+namespace osu.Game.Beatmaps.ControlPoints
+{
+    public class SampleControlPoint : ControlPoint
+    {
+        public const string DEFAULT_BANK = "normal";
+
+        /// <summary>
+        /// The default sample bank at this control point.
+        /// </summary>
+        public string SampleBank = DEFAULT_BANK;
+
+        /// <summary>
+        /// The default sample volume at this control point.
+        /// </summary>
+        public int SampleVolume;
+
+        /// <summary>
+        /// Create a SampleInfo based on the sample settings in this control point.
+        /// </summary>
+        /// <param name="sampleName">The name of the same.</param>
+        /// <returns>A populated <see cref="SampleInfo"/>.</returns>
+        public SampleInfo GetSampleInfo(string sampleName = SampleInfo.HIT_NORMAL) => new SampleInfo
+        {
+            Bank = SampleBank,
+            Name = sampleName,
+            Volume = SampleVolume,
+        };
+    }
+}

osu.Game/Beatmaps/ControlPoints/SoundControlPoint.cs

@@ -1,18 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-namespace osu.Game.Beatmaps.ControlPoints
-{
-    public class SoundControlPoint : ControlPoint
-    {
-        /// <summary>
-        /// The default sample bank at this control point.
-        /// </summary>
-        public string SampleBank;
-
-        /// <summary>
-        /// The default sample volume at this control point.
-        /// </summary>
-        public int SampleVolume;
-    }
-}

osu.Game/Beatmaps/Formats/Decoder.cs

@@ -10,11 +10,12 @@ namespace osu.Game.Beatmaps.Formats
 {
     public abstract class Decoder
     {
-        private static readonly Dictionary<string, Type> decoders = new Dictionary<string, Type>();
+        private static readonly Dictionary<string, Func<string, Decoder>> decoders = new Dictionary<string, Func<string, Decoder>>();
 
         static Decoder()
         {
             LegacyDecoder.Register();
+            JsonBeatmapDecoder.Register();
         }
 
         /// <summary>
@@ -33,17 +34,18 @@ namespace osu.Game.Beatmaps.Formats
 
             if (line == null || !decoders.ContainsKey(line))
                 throw new IOException(@"Unknown file format");
-            return (Decoder)Activator.CreateInstance(decoders[line], line);
+
+            return decoders[line](line);
         }
 
         /// <summary>
-        /// Adds the <see cref="Decoder"/> to the list of <see cref="Beatmap"/> and <see cref="Storyboard"/> decoder.
+        /// Registers an instantiation function for a <see cref="Decoder"/>.
         /// </summary>
-        /// <typeparam name="T">Type to decode a <see cref="Beatmap"/> with.</typeparam>
-        /// <param name="version">A string representation of the version.</param>
-        protected static void AddDecoder<T>(string version) where T : Decoder
+        /// <param name="magic">A string in the file which triggers this decoder to be used.</param>
+        /// <param name="constructor">A function which constructs the <see cref="Decoder"/> given <paramref name="magic"/>.</param>
+        protected static void AddDecoder(string magic, Func<string, Decoder> constructor)
         {
-            decoders[version] = typeof(T);
+            decoders[magic] = constructor;
         }
 
         /// <summary>

osu.Game/Beatmaps/Formats/JsonBeatmapDecoder.cs

@@ -0,0 +1,35 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.IO;
+using osu.Game.IO.Serialization;
+using osu.Game.Storyboards;
+
+namespace osu.Game.Beatmaps.Formats
+{
+    public class JsonBeatmapDecoder : Decoder
+    {
+        public static void Register()
+        {
+            AddDecoder("{", m => new JsonBeatmapDecoder());
+        }
+
+        public override Decoder GetStoryboardDecoder() => this;
+
+        protected override void ParseBeatmap(StreamReader stream, Beatmap beatmap)
+        {
+            stream.BaseStream.Position = 0;
+            stream.DiscardBufferedData();
+
+            stream.ReadToEnd().DeserializeInto(beatmap);
+
+            foreach (var hitObject in beatmap.HitObjects)
+                hitObject.ApplyDefaults(beatmap.ControlPointInfo, beatmap.BeatmapInfo.BaseDifficulty);
+        }
+
+        protected override void ParseStoryboard(StreamReader stream, Storyboard storyboard)
+        {
+            // throw new System.NotImplementedException();
+        }
+    }
+}

osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs

@@ -313,7 +313,7 @@ namespace osu.Game.Beatmaps.Formats
                 stringSampleSet = @"normal";
 
             DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(time);
-            SoundControlPoint soundPoint = beatmap.ControlPointInfo.SoundPointAt(time);
+            SampleControlPoint samplePoint = beatmap.ControlPointInfo.SamplePointAt(time);
             EffectControlPoint effectPoint = beatmap.ControlPointInfo.EffectPointAt(time);
 
             if (timingChange)
@@ -336,9 +336,9 @@ namespace osu.Game.Beatmaps.Formats
                 });
             }
 
-            if (stringSampleSet != soundPoint.SampleBank || sampleVolume != soundPoint.SampleVolume)
+            if (stringSampleSet != samplePoint.SampleBank || sampleVolume != samplePoint.SampleVolume)
             {
-                beatmap.ControlPointInfo.SoundPoints.Add(new SoundControlPoint
+                beatmap.ControlPointInfo.SamplePoints.Add(new SampleControlPoint
                 {
                     Time = time,
                     SampleBank = stringSampleSet,

osu.Game/Beatmaps/Formats/LegacyDecoder.cs

@@ -13,18 +13,18 @@ namespace osu.Game.Beatmaps.Formats
     {
         public static void Register()
         {
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v14");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v13");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v12");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v11");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v10");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v9");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v8");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v7");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v6");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v5");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v4");
-            AddDecoder<LegacyBeatmapDecoder>(@"osu file format v3");
+            AddDecoder(@"osu file format v14", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v13", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v12", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v11", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v10", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v9", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v8", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v7", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v6", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v5", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v4", m => new LegacyBeatmapDecoder(m));
+            AddDecoder(@"osu file format v3", m => new LegacyBeatmapDecoder(m));
             // TODO: differences between versions
         }
 

osu.Game/Beatmaps/WorkingBeatmap.cs

@@ -10,6 +10,10 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using osu.Game.Storyboards;
+using osu.Framework.IO.File;
+using System.IO;
+using osu.Game.IO.Serialization;
+using System.Diagnostics;
 
 namespace osu.Game.Beatmaps
 {
@@ -38,6 +42,17 @@ namespace osu.Game.Beatmaps
             storyboard = new AsyncLazy<Storyboard>(populateStoryboard);
         }
 
+        /// <summary>
+        /// Saves the <see cref="Beatmap"/>.
+        /// </summary>
+        public void Save()
+        {
+            var path = FileSafety.GetTempPath(Guid.NewGuid().ToString().Replace("-", string.Empty) + ".json");
+            using (var sw = new StreamWriter(path))
+                sw.WriteLine(Beatmap.Serialize());
+            Process.Start(path);
+        }
+
         protected abstract Beatmap GetBeatmap();
         protected abstract Texture GetBackground();
         protected abstract Track GetTrack();

osu.Game/Graphics/UserInterface/LineGraph.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Caching;
 using OpenTK;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -47,7 +48,16 @@ namespace osu.Game.Graphics.UserInterface
             set
             {
                 values = value.ToArray();
-                applyPath();
+
+                float max = values.Max(), min = values.Min();
+                if (MaxValue > max) max = MaxValue.Value;
+                if (MinValue < min) min = MinValue.Value;
+
+                ActualMaxValue = max;
+                ActualMinValue = min;
+
+                pathCached.Invalidate();
+
                 maskingContainer.Width = 0;
                 maskingContainer.ResizeWidthTo(1, transform_duration, Easing.OutQuint);
             }
@@ -63,13 +73,28 @@ namespace osu.Game.Graphics.UserInterface
             });
         }
 
+        private bool pending;
+
         public override bool Invalidate(Invalidation invalidation = Invalidation.All, Drawable source = null, bool shallPropagate = true)
         {
-            if ((invalidation & Invalidation.DrawSize) != 0)
-                applyPath();
+            if ((invalidation & Invalidation.DrawSize) > 0)
+                pathCached.Invalidate();
+
             return base.Invalidate(invalidation, source, shallPropagate);
         }
 
+        private Cached pathCached = new Cached();
+
+        protected override void Update()
+        {
+            base.Update();
+            if (!pathCached.IsValid)
+            {
+                applyPath();
+                pathCached.Validate();
+            }
+        }
+
         private void applyPath()
         {
             path.ClearVertices();
@@ -77,13 +102,6 @@ namespace osu.Game.Graphics.UserInterface
 
             int count = Math.Max(values.Length, DefaultValueCount);
 
-            float max = values.Max(), min = values.Min();
-            if (MaxValue > max) max = MaxValue.Value;
-            if (MinValue < min) min = MinValue.Value;
-
-            ActualMaxValue = max;
-            ActualMinValue = min;
-
             for (int i = 0; i < values.Length; i++)
             {
                 float x = (i + count - values.Length) / (float)(count - 1) * DrawWidth - 1;

osu.Game/IO/Serialization/Converters/TypedListConverter.cs

@@ -0,0 +1,100 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace osu.Game.IO.Serialization.Converters
+{
+    /// <summary>
+    /// A type of <see cref="JsonConverter"/> that serializes a <see cref="List<T>"/> alongside
+    /// a lookup table for the types contained. The lookup table is used in deserialization to
+    /// reconstruct the objects with their original types.
+    /// </summary>
+    /// <typeparam name="T">The type of objects contained in the <see cref="List<T>"/> this attribute is attached to.</typeparam>
+    public class TypedListConverter<T> : JsonConverter
+    {
+        private readonly bool requiresTypeVersion;
+
+        /// <summary>
+        /// Constructs a new <see cref="TypedListConverter{T}"/>.
+        /// </summary>
+        // ReSharper disable once UnusedMember.Global
+        public TypedListConverter()
+        {
+        }
+
+        /// <summary>
+        /// Constructs a new <see cref="TypedListConverter{T}"/>.
+        /// </summary>
+        /// <param name="requiresTypeVersion">Whether the version of the type should be serialized.</param>
+        // ReSharper disable once UnusedMember.Global (Used in Beatmap)
+        public TypedListConverter(bool requiresTypeVersion)
+        {
+            this.requiresTypeVersion = requiresTypeVersion;
+        }
+
+        public override bool CanConvert(Type objectType) => objectType == typeof(List<T>);
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            var list = new List<T>();
+
+            var obj = JObject.Load(reader);
+            var lookupTable = serializer.Deserialize<List<string>>(obj["lookup_table"].CreateReader());
+
+            foreach (var tok in obj["items"])
+            {
+                var itemReader = tok.CreateReader();
+
+                var typeName = lookupTable[(int)tok["type"]];
+                var instance = (T)Activator.CreateInstance(Type.GetType(typeName));
+                serializer.Populate(itemReader, instance);
+
+                list.Add(instance);
+            }
+
+            return list;
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            var list = (List<T>)value;
+
+            var lookupTable = new List<string>();
+            var objects = new List<JObject>();
+            foreach (var item in list)
+            {
+                var type = item.GetType();
+                var assemblyName = type.Assembly.GetName();
+
+                var typeString = $"{type.FullName}, {assemblyName.Name}";
+                if (requiresTypeVersion)
+                    typeString += $", {assemblyName.Version}";
+
+                int typeId = lookupTable.IndexOf(typeString);
+                if (typeId == -1)
+                {
+                    lookupTable.Add(typeString);
+                    typeId = lookupTable.Count - 1;
+                }
+
+                var itemObject = JObject.FromObject(item, serializer);
+                itemObject.AddFirst(new JProperty("type", typeId));
+                objects.Add(itemObject);
+            }
+
+            writer.WriteStartObject();
+
+            writer.WritePropertyName("lookup_table");
+            serializer.Serialize(writer, lookupTable);
+
+            writer.WritePropertyName("items");
+            serializer.Serialize(writer, objects);
+
+            writer.WriteEndObject();
+        }
+    }
+}

osu.Game/IO/Serialization/Converters/Vector2Converter.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using OpenTK;
+
+namespace osu.Game.IO.Serialization.Converters
+{
+    /// <summary>
+    /// A type of <see cref="JsonConverter"/> that serializes only the X and Y coordinates of a <see cref="Vector2"/>.
+    /// </summary>
+    public class Vector2Converter : JsonConverter
+    {
+        public override bool CanConvert(Type objectType) => objectType == typeof(Vector2);
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            var obj = JObject.Load(reader);
+            return new Vector2((float)obj["x"], (float)obj["y"]);
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            var vector = (Vector2)value;
+
+            writer.WriteStartObject();
+
+            writer.WritePropertyName("x");
+            writer.WriteValue(vector.X);
+            writer.WritePropertyName("y");
+            writer.WriteValue(vector.Y);
+
+            writer.WriteEndObject();
+        }
+    }
+}

osu.Game/IO/Serialization/IJsonSerializable.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using Newtonsoft.Json;
+using osu.Game.IO.Serialization.Converters;
 
 namespace osu.Game.IO.Serialization
 {
@@ -11,20 +12,26 @@ namespace osu.Game.IO.Serialization
 
     public static class JsonSerializableExtensions
     {
-        public static string Serialize(this IJsonSerializable obj)
-        {
-            return JsonConvert.SerializeObject(obj, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
-        }
+        public static string Serialize(this IJsonSerializable obj) => JsonConvert.SerializeObject(obj, CreateGlobalSettings());
 
-        public static T Deserialize<T>(this string objString)
-        {
-            return JsonConvert.DeserializeObject<T>(objString);
-        }
+        public static T Deserialize<T>(this string objString) => JsonConvert.DeserializeObject<T>(objString, CreateGlobalSettings());
 
-        public static T DeepClone<T>(this T obj)
-            where T : IJsonSerializable
+        public static void DeserializeInto<T>(this string objString, T target) => JsonConvert.PopulateObject(objString, target, CreateGlobalSettings());
+
+        public static T DeepClone<T>(this T obj) where T : IJsonSerializable => Deserialize<T>(Serialize(obj));
+
+        /// <summary>
+        /// Creates the default <see cref="JsonSerializerSettings"/> that should be used for all <see cref="IJsonSerializable"/>s.
+        /// </summary>
+        /// <returns></returns>
+        public static JsonSerializerSettings CreateGlobalSettings() => new JsonSerializerSettings
         {
-            return Deserialize<T>(Serialize(obj));
-        }
+            ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
+            Formatting = Formatting.Indented,
+            ObjectCreationHandling = ObjectCreationHandling.Replace,
+            DefaultValueHandling = DefaultValueHandling.IgnoreAndPopulate,
+            Converters = new JsonConverter[] { new Vector2Converter() },
+            ContractResolver = new KeyContractResolver()
+        };
     }
 }

osu.Game/IO/Serialization/KeyContractResolver.cs

@@ -0,0 +1,16 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using Humanizer;
+using Newtonsoft.Json.Serialization;
+
+namespace osu.Game.IO.Serialization
+{
+    public class KeyContractResolver : DefaultContractResolver
+    {
+        protected override string ResolvePropertyName(string propertyName)
+        {
+            return propertyName.Underscore();
+        }
+    }
+}

osu.Game/OsuGame.cs

@@ -37,7 +37,7 @@ namespace osu.Game
 
         private MusicController musicController;
 
-        private NotificationOverlay notificationOverlay;
+        private NotificationOverlay notifications;
 
         private DialogOverlay dialogOverlay;
 
@@ -136,7 +136,7 @@ namespace osu.Game
 
             if (s.Beatmap == null)
             {
-                notificationOverlay.Post(new SimpleNotification
+                notifications.Post(new SimpleNotification
                 {
                     Text = @"Tried to load a score for a beatmap we don't have!",
                     Icon = FontAwesome.fa_life_saver,
@@ -154,7 +154,7 @@ namespace osu.Game
             base.LoadComplete();
 
             // hook up notifications to components.
-            BeatmapManager.PostNotification = n => notificationOverlay?.Post(n);
+            BeatmapManager.PostNotification = n => notifications?.Post(n);
             BeatmapManager.GetStableStorage = GetStorageForStableInstall;
 
             AddRange(new Drawable[]
@@ -207,8 +207,9 @@ namespace osu.Game
                 Origin = Anchor.TopRight,
             }, overlayContent.Add);
 
-            loadComponentSingleFile(notificationOverlay = new NotificationOverlay
+            loadComponentSingleFile(notifications = new NotificationOverlay
             {
+                GetToolbarHeight = () => ToolbarOffset,
                 Depth = -4,
                 Anchor = Anchor.TopRight,
                 Origin = Anchor.TopRight,
@@ -223,7 +224,7 @@ namespace osu.Game
             {
                 if (entry.Level < LogLevel.Important) return;
 
-                notificationOverlay.Post(new SimpleNotification
+                notifications.Post(new SimpleNotification
                 {
                     Text = $@"{entry.Level}: {entry.Message}"
                 });
@@ -236,7 +237,7 @@ namespace osu.Game
             dependencies.Cache(userProfile);
             dependencies.Cache(musicController);
             dependencies.Cache(beatmapSetOverlay);
-            dependencies.Cache(notificationOverlay);
+            dependencies.Cache(notifications);
             dependencies.Cache(dialogOverlay);
 
             // ensure only one of these overlays are open at once.
@@ -271,19 +272,21 @@ namespace osu.Game
                 };
             }
 
-            settings.StateChanged += delegate
+            Action<Visibility> stateChanged = delegate
             {
-                switch (settings.State)
-                {
-                    case Visibility.Hidden:
-                        intro.MoveToX(0, SettingsOverlay.TRANSITION_LENGTH, Easing.OutQuint);
-                        break;
-                    case Visibility.Visible:
-                        intro.MoveToX(SettingsOverlay.SIDEBAR_WIDTH / 2, SettingsOverlay.TRANSITION_LENGTH, Easing.OutQuint);
-                        break;
-                }
+                float offset = 0;
+
+                if (settings.State == Visibility.Visible)
+                    offset += ToolbarButton.WIDTH / 2;
+                if (notifications.State == Visibility.Visible)
+                    offset -= ToolbarButton.WIDTH / 2;
+
+                intro.MoveToX(offset, SettingsOverlay.TRANSITION_LENGTH, Easing.OutQuint);
             };
 
+            settings.StateChanged += stateChanged;
+            notifications.StateChanged += stateChanged;
+
             Cursor.State = Visibility.Hidden;
         }
 
@@ -351,7 +354,7 @@ namespace osu.Game
             direct.State = Visibility.Hidden;
             social.State = Visibility.Hidden;
             userProfile.State = Visibility.Hidden;
-            notificationOverlay.State = Visibility.Hidden;
+            notifications.State = Visibility.Hidden;
         }
 
         private void screenChanged(Screen newScreen)

osu.Game/Overlays/NotificationOverlay.cs

@@ -10,6 +10,7 @@ using osu.Game.Overlays.Notifications;
 using OpenTK.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Containers;
+using System;
 
 namespace osu.Game.Overlays
 {
@@ -19,9 +20,13 @@ namespace osu.Game.Overlays
 
         public const float TRANSITION_LENGTH = 600;
 
-        private ScrollContainer scrollContainer;
         private FlowContainer<NotificationSection> sections;
 
+        /// <summary>
+        /// Provide a source for the toolbar height.
+        /// </summary>
+        public Func<float> GetToolbarHeight;
+
         [BackgroundDependencyLoader]
         private void load()
         {
@@ -36,12 +41,12 @@ namespace osu.Game.Overlays
                 {
                     RelativeSizeAxes = Axes.Both,
                     Colour = Color4.Black,
-                    Alpha = 0.6f,
+                    Alpha = 0.6f
                 },
-                scrollContainer = new OsuScrollContainer
+                new OsuScrollContainer
                 {
+                    Masking = true,
                     RelativeSizeAxes = Axes.Both,
-                    Margin = new MarginPadding { Top = Toolbar.Toolbar.HEIGHT },
                     Children = new[]
                     {
                         sections = new FillFlowContainer<NotificationSection>
@@ -55,14 +60,14 @@ namespace osu.Game.Overlays
                                 {
                                     Title = @"Notifications",
                                     ClearText = @"Clear All",
-                                    AcceptTypes = new[] { typeof(SimpleNotification) },
+                                    AcceptTypes = new[] { typeof(SimpleNotification) }
                                 },
                                 new NotificationSection
                                 {
                                     Title = @"Running Tasks",
                                     ClearText = @"Cancel All",
-                                    AcceptTypes = new[] { typeof(ProgressNotification) },
-                                },
+                                    AcceptTypes = new[] { typeof(ProgressNotification) }
+                                }
                             }
                         }
                     }
@@ -103,14 +108,8 @@ namespace osu.Game.Overlays
         {
             base.PopIn();
 
-            scrollContainer.MoveToX(0, TRANSITION_LENGTH, Easing.OutQuint);
             this.MoveToX(0, TRANSITION_LENGTH, Easing.OutQuint);
-            this.FadeTo(1, TRANSITION_LENGTH / 2);
-        }
-
-        private void markAllRead()
-        {
-            sections.Children.ForEach(s => s.MarkAllRead());
+            this.FadeTo(1, TRANSITION_LENGTH, Easing.OutQuint);
         }
 
         protected override void PopOut()
@@ -120,7 +119,19 @@ namespace osu.Game.Overlays
             markAllRead();
 
             this.MoveToX(width, TRANSITION_LENGTH, Easing.OutQuint);
-            this.FadeTo(0, TRANSITION_LENGTH / 2);
+            this.FadeTo(0, TRANSITION_LENGTH, Easing.OutQuint);
+        }
+
+        private void markAllRead()
+        {
+            sections.Children.ForEach(s => s.MarkAllRead());
+        }
+
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            Padding = new MarginPadding { Top = GetToolbarHeight?.Invoke() ?? 0 };
         }
     }
 }

osu.Game/Overlays/Profile/ProfileHeader.cs

@@ -27,8 +27,9 @@ namespace osu.Game.Overlays.Profile
         private readonly OsuTextFlowContainer infoTextLeft;
         private readonly LinkFlowContainer infoTextRight;
         private readonly FillFlowContainer<SpriteText> scoreText, scoreNumberText;
+        private readonly RankGraph rankGraph;
 
-        private readonly Container coverContainer, chartContainer, supporterTag;
+        private readonly Container coverContainer, supporterTag;
         private readonly Sprite levelBadge;
         private readonly SpriteText levelText;
         private readonly GradeBadge gradeSSPlus, gradeSS, gradeSPlus, gradeS, gradeA;
@@ -273,7 +274,7 @@ namespace osu.Game.Overlays.Profile
                                 }
                             }
                         },
-                        chartContainer = new Container
+                        new Container
                         {
                             RelativeSizeAxes = Axes.X,
                             Anchor = Anchor.BottomCentre,
@@ -285,6 +286,10 @@ namespace osu.Game.Overlays.Profile
                                 {
                                     Colour = Color4.Black.Opacity(0.25f),
                                     RelativeSizeAxes = Axes.Both
+                                },
+                                rankGraph = new RankGraph
+                                {
+                                    RelativeSizeAxes = Axes.Both
                                 }
                             }
                         }
@@ -303,11 +308,7 @@ namespace osu.Game.Overlays.Profile
 
         public User User
         {
-            get
-            {
-                return user;
-            }
-
+            get { return user; }
             set
             {
                 user = value;
@@ -420,7 +421,7 @@ namespace osu.Game.Overlays.Profile
                 gradeSPlus.DisplayCount = 0;
                 gradeSSPlus.DisplayCount = 0;
 
-                chartContainer.Add(new RankChart(user) { RelativeSizeAxes = Axes.Both });
+                rankGraph.User.Value = user;
             }
         }
 

osu.Game/Overlays/Profile/RankGraph.cs

@@ -14,30 +14,39 @@ using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Users;
+using System.Collections.Generic;
+using osu.Framework.Configuration;
 
 namespace osu.Game.Overlays.Profile
 {
-    public class RankChart : Container
+    public class RankGraph : Container
     {
+        private const float primary_textsize = 25;
+        private const float secondary_textsize = 13;
+        private const float padding = 10;
+        private const float fade_duration = 150;
+        private const int ranked_days = 88;
+
         private readonly SpriteText rankText, performanceText, relativeText;
         private readonly RankChartLineGraph graph;
+        private readonly OsuSpriteText placeholder;
 
-        private readonly int[] ranks;
+        private KeyValuePair<int, int>[] ranks;
+        public Bindable<User> User = new Bindable<User>();
 
-        private const float primary_textsize = 25, secondary_textsize = 13, padding = 10;
-
-        private readonly User user;
-
-        public RankChart(User user)
+        public RankGraph()
         {
-            this.user = user;
-
-            int[] userRanks = user.RankHistory?.Data ?? new[] { user.Statistics.Rank };
-            ranks = userRanks.SkipWhile(x => x == 0).ToArray();
-
             Padding = new MarginPadding { Vertical = padding };
             Children = new Drawable[]
             {
+                placeholder = new OsuSpriteText
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Text = "No recent plays",
+                    TextSize = 14,
+                    Font = @"Exo2.0-RegularItalic",
+                },
                 rankText = new OsuSpriteText
                 {
                     Anchor = Anchor.TopCentre,
@@ -60,89 +69,103 @@ namespace osu.Game.Overlays.Profile
                     Font = @"Exo2.0-RegularItalic",
                     TextSize = secondary_textsize
                 },
-            };
-
-            if (ranks.Length > 0)
-            {
-                Add(graph = new RankChartLineGraph
+                graph = new RankChartLineGraph
                 {
                     Anchor = Anchor.BottomCentre,
                     Origin = Anchor.BottomCentre,
                     RelativeSizeAxes = Axes.X,
+                    Height = 75,
                     Y = -secondary_textsize,
-                    DefaultValueCount = ranks.Length,
-                });
+                    Alpha = 0,
+                }
+            };
 
-                graph.OnBallMove += showHistoryRankTexts;
-            }
-        }
+            graph.OnBallMove += showHistoryRankTexts;
 
-        private void updateRankTexts()
-        {
-            rankText.Text = user.Statistics.Rank > 0 ? $"#{user.Statistics.Rank:#,0}" : "no rank";
-            performanceText.Text = user.Statistics.PP != null ? $"{user.Statistics.PP:#,0}pp" : string.Empty;
-            relativeText.Text = user.CountryRank > 0 ? $"{user.Country?.FullName} #{user.CountryRank:#,0}" : $"{user.Country?.FullName}";
-        }
-
-        private void showHistoryRankTexts(int dayIndex)
-        {
-            rankText.Text = ranks[dayIndex] > 0 ? $"#{ranks[dayIndex]:#,0}" : "no rank";
-            dayIndex++;
-            relativeText.Text = dayIndex == ranks.Length ? "Now" : $"{ranks.Length - dayIndex} days ago";
-            //plural should be handled in a general way
+            User.ValueChanged += userChanged;
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            if (graph != null)
+            graph.Colour = colours.Yellow;
+        }
+
+        private void userChanged(User user)
+        {
+            placeholder.FadeIn(fade_duration, Easing.Out);
+
+            if (user == null)
             {
-                graph.Colour = colours.Yellow;
-                // use logarithmic coordinates
-                graph.Values = ranks.Select(x => x == 0 ? float.MinValue : -(float)Math.Log(x));
+                rankText.Text = string.Empty;
+                performanceText.Text = string.Empty;
+                relativeText.Text = string.Empty;
+                graph.FadeOut(fade_duration, Easing.Out);
+                ranks = null;
+                return;
+            }
+
+            int[] userRanks = user.RankHistory?.Data ?? new[] { user.Statistics.Rank };
+            ranks = userRanks.Select((x, index) => new KeyValuePair<int, int>(index, x)).Where(x => x.Value != 0).ToArray();
+
+            if (ranks.Length > 1)
+            {
+                placeholder.FadeOut(fade_duration, Easing.Out);
+
+                graph.DefaultValueCount = ranks.Length;
+                graph.Values = ranks.Select(x => -(float)Math.Log(x.Value));
                 graph.SetStaticBallPosition();
             }
 
+            graph.FadeTo(ranks.Length > 1 ? 1 : 0, fade_duration, Easing.Out);
+
             updateRankTexts();
         }
 
-        public override bool Invalidate(Invalidation invalidation = Invalidation.All, Drawable source = null, bool shallPropagate = true)
+        private void updateRankTexts()
         {
-            if ((invalidation & Invalidation.DrawSize) != 0)
-            {
-                graph.Height = DrawHeight - padding * 2 - primary_textsize - secondary_textsize * 2;
-            }
+            rankText.Text = User.Value.Statistics.Rank > 0 ? $"#{User.Value.Statistics.Rank:#,0}" : "no rank";
+            performanceText.Text = User.Value.Statistics.PP != null ? $"{User.Value.Statistics.PP:#,0}pp" : string.Empty;
+            relativeText.Text = $"{User.Value.Country?.FullName} #{User.Value.CountryRank:#,0}";
+        }
 
-            return base.Invalidate(invalidation, source, shallPropagate);
+        private void showHistoryRankTexts(int dayIndex)
+        {
+            rankText.Text = $"#{ranks[dayIndex].Value:#,0}";
+            relativeText.Text = dayIndex + 1 == ranks.Length ? "Now" : $"{ranked_days - ranks[dayIndex].Key} days ago";
         }
 
         protected override bool OnHover(InputState state)
         {
-            graph?.UpdateBallPosition(state.Mouse.Position.X);
-            graph?.ShowBall();
+            if (ranks?.Length > 1)
+            {
+                graph.UpdateBallPosition(state.Mouse.Position.X);
+                graph.ShowBall();
+            }
             return base.OnHover(state);
         }
 
         protected override bool OnMouseMove(InputState state)
         {
-            graph?.UpdateBallPosition(state.Mouse.Position.X);
+            if (ranks?.Length > 1)
+                graph.UpdateBallPosition(state.Mouse.Position.X);
+
             return base.OnMouseMove(state);
         }
 
         protected override void OnHoverLost(InputState state)
         {
-            if (graph != null)
+            if (ranks?.Length > 1)
             {
                 graph.HideBall();
                 updateRankTexts();
             }
+
             base.OnHoverLost(state);
         }
 
         private class RankChartLineGraph : LineGraph
         {
-            private const double fade_duration = 200;
-
             private readonly CircularContainer staticBall;
             private readonly CircularContainer movingBall;
 

osu.Game/Overlays/SettingsOverlay.cs

@@ -24,7 +24,7 @@ namespace osu.Game.Overlays
 
         public const float TRANSITION_LENGTH = 600;
 
-        public const float SIDEBAR_WIDTH = Sidebar.DEFAULT_WIDTH;
+        private const float sidebar_width = Sidebar.DEFAULT_WIDTH;
 
         protected const float WIDTH = 400;
 
@@ -102,7 +102,7 @@ namespace osu.Game.Overlays
 
             if (showSidebar)
             {
-                AddInternal(Sidebar = new Sidebar { Width = SIDEBAR_WIDTH });
+                AddInternal(Sidebar = new Sidebar { Width = sidebar_width });
 
                 SectionsContainer.SelectedSection.ValueChanged += section =>
                 {
@@ -167,7 +167,7 @@ namespace osu.Game.Overlays
 
             ContentContainer.MoveToX(-WIDTH, TRANSITION_LENGTH, Easing.OutQuint);
 
-            Sidebar?.MoveToX(-SIDEBAR_WIDTH, TRANSITION_LENGTH, Easing.OutQuint);
+            Sidebar?.MoveToX(-sidebar_width, TRANSITION_LENGTH, Easing.OutQuint);
             this.FadeTo(0, TRANSITION_LENGTH, Easing.OutQuint);
 
             searchTextBox.HoldFocus = false;

osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs

@@ -84,15 +84,27 @@ namespace osu.Game.Rulesets.Objects.Drawables
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
         {
-            foreach (SampleInfo sample in HitObject.Samples)
+            if (HitObject.Samples != null)
             {
-                SampleChannel channel = audio.Sample.Get($@"Gameplay/{sample.Bank}-{sample.Name}");
+                if (HitObject.SampleControlPoint == null)
+                    throw new ArgumentNullException(nameof(HitObject.SampleControlPoint), $"{nameof(HitObject)} must always have an attached {nameof(HitObject.SampleControlPoint)}.");
 
-                if (channel == null)
-                    continue;
+                foreach (SampleInfo s in HitObject.Samples)
+                {
+                    SampleInfo localSampleInfo = new SampleInfo
+                    {
+                        Bank = s.Bank ?? HitObject.SampleControlPoint.SampleBank,
+                        Name = s.Name,
+                        Volume = s.Volume > 0 ? s.Volume : HitObject.SampleControlPoint.SampleVolume
+                    };
 
-                channel.Volume.Value = sample.Volume;
-                Samples.Add(channel);
+                    SampleChannel channel = localSampleInfo.GetChannel(audio.Sample);
+
+                    if (channel == null)
+                        continue;
+
+                    Samples.Add(channel);
+                }
             }
         }
 

osu.Game/Rulesets/Objects/HitObject.cs

@@ -1,6 +1,10 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Lists;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -28,41 +32,49 @@ namespace osu.Game.Rulesets.Objects
         /// and can be treated as the default samples for the hit object.
         /// </para>
         /// </summary>
-        public SampleInfoList Samples = new SampleInfoList();
+        public SampleInfoList Samples;
+
+        [JsonIgnore]
+        public SampleControlPoint SampleControlPoint;
 
         /// <summary>
         /// Whether this <see cref="HitObject"/> is in Kiai time.
         /// </summary>
+        [JsonIgnore]
         public bool Kiai { get; private set; }
 
+        private readonly SortedList<HitObject> nestedHitObjects = new SortedList<HitObject>((h1, h2) => h1.StartTime.CompareTo(h2.StartTime));
+
+        [JsonIgnore]
+        public IReadOnlyList<HitObject> NestedHitObjects => nestedHitObjects;
+
         /// <summary>
         /// Applies default values to this HitObject.
         /// </summary>
         /// <param name="controlPointInfo">The control points.</param>
         /// <param name="difficulty">The difficulty settings to use.</param>
-        public virtual void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        public void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            SoundControlPoint soundPoint = controlPointInfo.SoundPointAt(StartTime);
+            ApplyDefaultsToSelf(controlPointInfo, difficulty);
+
+            nestedHitObjects.Clear();
+            CreateNestedHitObjects();
+            nestedHitObjects.ForEach(h => h.ApplyDefaults(controlPointInfo, difficulty));
+        }
+
+        protected virtual void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        {
+            SampleControlPoint samplePoint = controlPointInfo.SamplePointAt(StartTime);
             EffectControlPoint effectPoint = controlPointInfo.EffectPointAt(StartTime);
 
-            Kiai |= effectPoint.KiaiMode;
-
-            // Initialize first sample
-            Samples.ForEach(s => initializeSampleInfo(s, soundPoint));
-
-            // Initialize any repeat samples
-            var repeatData = this as IHasRepeats;
-            repeatData?.RepeatSamples?.ForEach(r => r.ForEach(s => initializeSampleInfo(s, soundPoint)));
+            Kiai = effectPoint.KiaiMode;
+            SampleControlPoint = samplePoint;
         }
 
-        private void initializeSampleInfo(SampleInfo sample, SoundControlPoint soundPoint)
+        protected virtual void CreateNestedHitObjects()
         {
-            if (sample.Volume == 0)
-                sample.Volume = soundPoint?.SampleVolume ?? 0;
-
-            // If the bank is not assigned a name, assign it from the control point
-            if (string.IsNullOrEmpty(sample.Bank))
-                sample.Bank = soundPoint?.SampleBank ?? @"normal";
         }
+
+        protected void AddNested(HitObject hitObject) => nestedHitObjects.Add(hitObject);
     }
 }

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

@@ -46,9 +46,9 @@ namespace osu.Game.Rulesets.Objects.Legacy
             throw new NotImplementedException();
         }
 
-        public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+        protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
-            base.ApplyDefaults(controlPointInfo, difficulty);
+            base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
             DifficultyControlPoint difficultyPoint = controlPointInfo.DifficultyPointAt(StartTime);

osu.Game/Rulesets/RulesetInfo.cs

@@ -3,12 +3,14 @@
 
 using System;
 using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
 
 namespace osu.Game.Rulesets
 {
     public class RulesetInfo : IEquatable<RulesetInfo>
     {
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [JsonIgnore]
         public int? ID { get; set; }
 
         public string Name { get; set; }
@@ -17,6 +19,7 @@ namespace osu.Game.Rulesets
 
         public string InstantiationInfo { get; set; }
 
+        [JsonIgnore]
         public bool Available { get; set; }
 
         public virtual Ruleset CreateInstance() => (Ruleset)Activator.CreateInstance(Type.GetType(InstantiationInfo), this);

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

@@ -25,7 +25,7 @@ namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
             cpi.TimingPoints.ForEach(addTimingPoint);
 
             // Consider all non-timing points as the same type
-            cpi.SoundPoints.Select(c => (ControlPoint)c)
+            cpi.SamplePoints.Select(c => (ControlPoint)c)
                 .Concat(cpi.EffectPoints)
                 .Concat(cpi.DifficultyPoints)
                 .Distinct()

osu.Game/Screens/Edit/Editor.cs

@@ -67,6 +67,8 @@ namespace osu.Game.Screens.Edit
                             {
                                 Items = new[]
                                 {
+                                    new EditorMenuItem("Export", MenuItemType.Standard, exportBeatmap),
+                                    new EditorMenuItemSpacer(),
                                     new EditorMenuItem("Exit", MenuItemType.Standard, Exit)
                                 }
                             }
@@ -136,6 +138,11 @@ namespace osu.Game.Screens.Edit
             bottomBackground.Colour = colours.Gray2;
         }
 
+        private void exportBeatmap()
+        {
+            Beatmap.Value.Save();
+        }
+
         private void onModeChanged(EditorScreenMode mode)
         {
             currentScreen?.Exit();

osu.Game/Screens/Select/BeatmapCarousel.cs

@@ -181,6 +181,9 @@ namespace osu.Game.Screens.Select
         /// <param name="skipDifficulties">Whether to skip individual difficulties and only increment over full groups.</param>
         public void SelectNext(int direction = 1, bool skipDifficulties = true)
         {
+            if (!Items.Any())
+                return;
+
             int originalIndex = Items.IndexOf(selectedBeatmap?.Drawables.First());
             int currentIndex = originalIndex;
 

osu.Game/Screens/Select/Leaderboards/Leaderboard.cs

@@ -19,17 +19,14 @@ using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using System.Linq;
 using osu.Framework.Configuration;
-using osu.Game.Graphics.Sprites;
-using osu.Game.Graphics;
 using osu.Framework.Logging;
 using osu.Game.Rulesets;
-using osu.Framework.Input;
 
 namespace osu.Game.Screens.Select.Leaderboards
 {
     public class Leaderboard : Container
     {
-        private const double fade_duration = 200;
+        private const double fade_duration = 300;
 
         private readonly ScrollContainer scrollContainer;
         private readonly Container placeholderContainer;
@@ -51,7 +48,7 @@ namespace osu.Game.Screens.Select.Leaderboards
             {
                 scores = value;
 
-                scrollFlow?.FadeOut(fade_duration).Expire();
+                scrollFlow?.FadeOut(fade_duration, Easing.OutQuint).Expire();
                 scrollFlow = null;
 
                 loading.Hide();
@@ -90,6 +87,7 @@ namespace osu.Game.Screens.Select.Leaderboards
         }
 
         private LeaderboardScope scope;
+
         public LeaderboardScope Scope
         {
             get { return scope; }
@@ -103,6 +101,7 @@ namespace osu.Game.Screens.Select.Leaderboards
         }
 
         private PlaceholderState placeholderState;
+
         protected PlaceholderState PlaceholderState
         {
             get { return placeholderState; }
@@ -118,19 +117,18 @@ namespace osu.Game.Screens.Select.Leaderboards
                             OnRetry = updateScores,
                         });
                         break;
-
+                    case PlaceholderState.Unavailable:
+                        replacePlaceholder(new MessagePlaceholder(@"Leaderboards are not available for this beatmap!"));
+                        break;
                     case PlaceholderState.NoScores:
                         replacePlaceholder(new MessagePlaceholder(@"No records yet!"));
                         break;
-
                     case PlaceholderState.NotLoggedIn:
                         replacePlaceholder(new MessagePlaceholder(@"Please login to view online leaderboards!"));
                         break;
-
                     case PlaceholderState.NotSupporter:
                         replacePlaceholder(new MessagePlaceholder(@"Please invest in a supporter tag to view this leaderboard!"));
                         break;
-
                     default:
                         replacePlaceholder(null);
                         break;
@@ -150,18 +148,13 @@ namespace osu.Game.Screens.Select.Leaderboards
                 loading = new LoadingAnimation(),
                 placeholderContainer = new Container
                 {
-                    Alpha = 0,
-                    AutoSizeAxes = Axes.Both,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
+                    RelativeSizeAxes = Axes.Both
                 },
             };
         }
 
         private APIAccess api;
-
         private BeatmapInfo beatmap;
-
         private OsuGame osuGame;
 
         private ScheduledDelegate pendingBeatmapSwitch;
@@ -229,15 +222,15 @@ namespace osu.Game.Screens.Select.Leaderboards
                 return;
             }
 
-            if (api?.IsLoggedIn != true)
+            if (Beatmap?.OnlineBeatmapID == null)
             {
-                PlaceholderState = PlaceholderState.NotLoggedIn;
+                PlaceholderState = PlaceholderState.Unavailable;
                 return;
             }
 
-            if (Beatmap?.OnlineBeatmapID == null)
+            if (api?.IsLoggedIn != true)
             {
-                PlaceholderState = PlaceholderState.NetworkFailure;
+                PlaceholderState = PlaceholderState.NotLoggedIn;
                 return;
             }
 
@@ -272,23 +265,22 @@ namespace osu.Game.Screens.Select.Leaderboards
 
         private void replacePlaceholder(Placeholder placeholder)
         {
-            if (placeholder == null)
-            {
-                placeholderContainer.FadeOutFromOne(fade_duration, Easing.OutQuint);
-                placeholderContainer.Clear(true);
+            var existingPlaceholder = placeholderContainer.Children.LastOrDefault() as Placeholder;
+
+            if (placeholder != null && placeholder.Equals(existingPlaceholder))
                 return;
-            }
 
-            var existingPlaceholder = placeholderContainer.Children.FirstOrDefault() as Placeholder;
+            existingPlaceholder?.FadeOut(150, Easing.OutQuint).Expire();
 
-            if (placeholder.Equals(existingPlaceholder))
+            if (placeholder == null)
                 return;
 
             Scores = null;
 
-            placeholderContainer.Clear(true);
-            placeholderContainer.Child = placeholder;
-            placeholderContainer.FadeInFromZero(fade_duration, Easing.OutQuint);
+            placeholderContainer.Add(placeholder);
+
+            placeholder.ScaleTo(0.8f).Then().ScaleTo(1, fade_duration * 3, Easing.OutQuint);
+            placeholder.FadeInFromZero(fade_duration, Easing.OutQuint);
         }
 
         protected override void Update()
@@ -319,101 +311,6 @@ namespace osu.Game.Screens.Select.Leaderboards
                 }
             }
         }
-
-        private abstract class Placeholder : FillFlowContainer, IEquatable<Placeholder>
-        {
-            public virtual bool Equals(Placeholder other) => GetType() == other?.GetType();
-        }
-
-        private class MessagePlaceholder : Placeholder
-        {
-            private readonly string message;
-
-            public MessagePlaceholder(string message)
-            {
-                Direction = FillDirection.Horizontal;
-                AutoSizeAxes = Axes.Both;
-                Children = new Drawable[]
-                {
-                    new SpriteIcon
-                    {
-                        Icon = FontAwesome.fa_exclamation_circle,
-                        Size = new Vector2(26),
-                        Margin = new MarginPadding { Right = 10 },
-                    },
-                    new OsuSpriteText
-                    {
-                        Text = this.message = message,
-                        TextSize = 22,
-                    },
-                };
-            }
-
-            public override bool Equals(Placeholder other) => (other as MessagePlaceholder)?.message == message;
-        }
-
-        private class RetrievalFailurePlaceholder : Placeholder
-        {
-            public Action OnRetry;
-
-            public RetrievalFailurePlaceholder()
-            {
-                Direction = FillDirection.Horizontal;
-                AutoSizeAxes = Axes.Both;
-                Children = new Drawable[]
-                {
-                    new RetryButton
-                    {
-                        Action = () => OnRetry?.Invoke(),
-                        Margin = new MarginPadding { Right = 10 },
-                    },
-                    new OsuSpriteText
-                    {
-                        Anchor = Anchor.TopLeft,
-                        Text = @"Couldn't retrieve scores!",
-                        TextSize = 22,
-                    },
-                };
-            }
-
-            private class RetryButton : OsuHoverContainer
-            {
-                private readonly SpriteIcon icon;
-
-                public Action Action;
-
-                public RetryButton()
-                {
-                    Height = 26;
-                    Width = 26;
-                    Child = new OsuClickableContainer
-                    {
-                        AutoSizeAxes = Axes.Both,
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
-                        Action = () => Action?.Invoke(),
-                        Child = icon = new SpriteIcon
-                        {
-                            Icon = FontAwesome.fa_refresh,
-                            Size = new Vector2(26),
-                            Shadow = true,
-                        },
-                    };
-                }
-
-                protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
-                {
-                    icon.ScaleTo(0.8f, 4000, Easing.OutQuint);
-                    return base.OnMouseDown(state, args);
-                }
-
-                protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
-                {
-                    icon.ScaleTo(1, 1000, Easing.OutElastic);
-                    return base.OnMouseUp(state, args);
-                }
-            }
-        }
     }
 
     public enum LeaderboardScope
@@ -429,6 +326,7 @@ namespace osu.Game.Screens.Select.Leaderboards
         Successful,
         Retrieving,
         NetworkFailure,
+        Unavailable,
         NoScores,
         NotLoggedIn,
         NotSupporter,

osu.Game/Screens/Select/Leaderboards/MessagePlaceholder.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using OpenTK;
+
+namespace osu.Game.Screens.Select.Leaderboards
+{
+    public class MessagePlaceholder : Placeholder
+    {
+        private readonly string message;
+
+        public MessagePlaceholder(string message)
+        {
+            Direction = FillDirection.Horizontal;
+            AutoSizeAxes = Axes.Both;
+            Children = new Drawable[]
+            {
+                new SpriteIcon
+                {
+                    Icon = FontAwesome.fa_exclamation_circle,
+                    Size = new Vector2(26),
+                    Margin = new MarginPadding { Right = 10 },
+                },
+                new OsuSpriteText
+                {
+                    Text = this.message = message,
+                    TextSize = 22,
+                },
+            };
+        }
+
+        public override bool Equals(Placeholder other) => (other as MessagePlaceholder)?.message == message;
+    }
+}

osu.Game/Screens/Select/Leaderboards/Placeholder.cs

@@ -0,0 +1,20 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Screens.Select.Leaderboards
+{
+    public abstract class Placeholder : FillFlowContainer, IEquatable<Placeholder>
+    {
+        protected Placeholder()
+        {
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+        }
+
+        public virtual bool Equals(Placeholder other) => GetType() == other?.GetType();
+    }
+}

osu.Game/Screens/Select/Leaderboards/RetrievalFailurePlaceholder.cs

@@ -0,0 +1,77 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Input;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using OpenTK;
+
+namespace osu.Game.Screens.Select.Leaderboards
+{
+    public class RetrievalFailurePlaceholder : Placeholder
+    {
+        public Action OnRetry;
+
+        public RetrievalFailurePlaceholder()
+        {
+            Direction = FillDirection.Horizontal;
+            AutoSizeAxes = Axes.Both;
+            Children = new Drawable[]
+            {
+                new RetryButton
+                {
+                    Action = () => OnRetry?.Invoke(),
+                    Margin = new MarginPadding { Right = 10 },
+                },
+                new OsuSpriteText
+                {
+                    Anchor = Anchor.TopLeft,
+                    Text = @"Couldn't retrieve scores!",
+                    TextSize = 22,
+                },
+            };
+        }
+
+        public class RetryButton : OsuHoverContainer
+        {
+            private readonly SpriteIcon icon;
+
+            public Action Action;
+
+            public RetryButton()
+            {
+                Height = 26;
+                Width = 26;
+                Child = new OsuClickableContainer
+                {
+                    AutoSizeAxes = Axes.Both,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Action = () => Action?.Invoke(),
+                    Child = icon = new SpriteIcon
+                    {
+                        Icon = FontAwesome.fa_refresh,
+                        Size = new Vector2(26),
+                        Shadow = true,
+                    },
+                };
+            }
+
+            protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
+            {
+                icon.ScaleTo(0.8f, 4000, Easing.OutQuint);
+                return base.OnMouseDown(state, args);
+            }
+
+            protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
+            {
+                icon.ScaleTo(1, 1000, Easing.OutElastic);
+                return base.OnMouseUp(state, args);
+            }
+        }
+    }
+}

osu.Game/Storyboards/CommandTimelineGroup.cs

@@ -6,6 +6,7 @@ using OpenTK.Graphics;
 using osu.Framework.Graphics;
 using System.Collections.Generic;
 using System.Linq;
+using Newtonsoft.Json;
 
 namespace osu.Game.Storyboards
 {
@@ -23,6 +24,7 @@ namespace osu.Game.Storyboards
         public CommandTimeline<bool> FlipH = new CommandTimeline<bool>();
         public CommandTimeline<bool> FlipV = new CommandTimeline<bool>();
 
+        [JsonIgnore]
         public IEnumerable<ICommandTimeline> Timelines
         {
             get
@@ -39,14 +41,25 @@ namespace osu.Game.Storyboards
             }
         }
 
+        [JsonIgnore]
         public double CommandsStartTime => Timelines.Where(t => t.HasCommands).Min(t => t.StartTime);
+
+        [JsonIgnore]
         public double CommandsEndTime => Timelines.Where(t => t.HasCommands).Max(t => t.EndTime);
+
+        [JsonIgnore]
         public double CommandsDuration => CommandsEndTime - CommandsStartTime;
 
+        [JsonIgnore]
         public virtual double StartTime => CommandsStartTime;
+
+        [JsonIgnore]
         public virtual double EndTime => CommandsEndTime;
+
+        [JsonIgnore]
         public double Duration => EndTime - StartTime;
 
+        [JsonIgnore]
         public bool HasCommands => Timelines.Any(t => t.HasCommands);
 
         public virtual IEnumerable<CommandTimeline<T>.TypedCommand> GetCommands<T>(CommandTimelineSelector<T> timelineSelector, double offset = 0)

osu.Game/osu.Game.csproj

@@ -258,11 +258,12 @@
     <Compile Include="Beatmaps\ControlPoints\ControlPointInfo.cs" />
     <Compile Include="Beatmaps\ControlPoints\DifficultyControlPoint.cs" />
     <Compile Include="Beatmaps\ControlPoints\EffectControlPoint.cs" />
-    <Compile Include="Beatmaps\ControlPoints\SoundControlPoint.cs" />
+    <Compile Include="Beatmaps\ControlPoints\SampleControlPoint.cs" />
     <Compile Include="Beatmaps\ControlPoints\TimingControlPoint.cs" />
     <Compile Include="Beatmaps\DifficultyCalculator.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapSetCover.cs" />
+    <Compile Include="Beatmaps\Formats\JsonBeatmapDecoder.cs" />
     <Compile Include="Beatmaps\Formats\LegacyDecoder.cs" />
     <Compile Include="Beatmaps\Formats\LegacyStoryboardDecoder.cs" />
     <Compile Include="Database\DatabaseContextFactory.cs" />
@@ -271,6 +272,7 @@
     <Compile Include="Graphics\UserInterface\HoverClickSounds.cs" />
     <Compile Include="Graphics\UserInterface\HoverSounds.cs" />
     <Compile Include="Graphics\UserInterface\OsuButton.cs" />
+    <Compile Include="IO\Serialization\KeyContractResolver.cs" />
     <Compile Include="Migrations\20171019041408_InitialCreate.cs" />
     <Compile Include="Migrations\20171019041408_InitialCreate.Designer.cs">
       <DependentUpon>20171019041408_InitialCreate.cs</DependentUpon>
@@ -418,6 +420,8 @@
     <Compile Include="IO\Legacy\ILegacySerializable.cs" />
     <Compile Include="IO\Legacy\SerializationReader.cs" />
     <Compile Include="IO\Legacy\SerializationWriter.cs" />
+    <Compile Include="IO\Serialization\Converters\TypedListConverter.cs" />
+    <Compile Include="IO\Serialization\Converters\Vector2Converter.cs" />
     <Compile Include="IO\Serialization\IJsonSerializable.cs" />
     <Compile Include="IPC\BeatmapIPCChannel.cs" />
     <Compile Include="IPC\ScoreIPCChannel.cs" />
@@ -499,7 +503,7 @@
     <Compile Include="Overlays\Profile\Sections\Ranks\DrawableProfileScore.cs" />
     <Compile Include="Overlays\Profile\ProfileHeader.cs" />
     <Compile Include="Overlays\Profile\ProfileSection.cs" />
-    <Compile Include="Overlays\Profile\RankChart.cs" />
+    <Compile Include="Overlays\Profile\RankGraph.cs" />
     <Compile Include="Overlays\Profile\Sections\AboutSection.cs" />
     <Compile Include="Overlays\Profile\Sections\BeatmapsSection.cs" />
     <Compile Include="Overlays\Profile\Sections\HistoricalSection.cs" />
@@ -781,6 +785,9 @@
     <Compile Include="Screens\Select\Leaderboards\DrawableRank.cs" />
     <Compile Include="Screens\Select\Leaderboards\Leaderboard.cs" />
     <Compile Include="Screens\Select\Leaderboards\LeaderboardScore.cs" />
+    <Compile Include="Screens\Select\Leaderboards\MessagePlaceholder.cs" />
+    <Compile Include="Screens\Select\Leaderboards\Placeholder.cs" />
+    <Compile Include="Screens\Select\Leaderboards\RetrievalFailurePlaceholder.cs" />
     <Compile Include="Screens\Select\MatchSongSelect.cs" />
     <Compile Include="Screens\Select\Options\BeatmapOptionsButton.cs" />
     <Compile Include="Screens\Select\Options\BeatmapOptionsOverlay.cs" />