Merge pull request #788 from smoogipooo/mania-beatmap-conversion

Mania beatmap conversion

osu.Desktop.VisualTests/Tests/TestCaseGamefield.cs

@@ -85,25 +85,25 @@ namespace osu.Desktop.VisualTests.Tests
                     Clock = new FramedClock(),
                     Children = new Drawable[]
                     {
-                        new OsuHitRenderer(beatmap)
+                        new OsuHitRenderer(beatmap, false)
                         {
                             Scale = new Vector2(0.5f),
                             Anchor = Anchor.TopLeft,
                             Origin = Anchor.TopLeft
                         },
-                        new TaikoHitRenderer(beatmap)
+                        new TaikoHitRenderer(beatmap, false)
                         {
                             Scale = new Vector2(0.5f),
                             Anchor = Anchor.TopRight,
                             Origin = Anchor.TopRight
                         },
-                        new CatchHitRenderer(beatmap)
+                        new CatchHitRenderer(beatmap, false)
                         {
                             Scale = new Vector2(0.5f),
                             Anchor = Anchor.BottomLeft,
                             Origin = Anchor.BottomLeft
                         },
-                        new ManiaHitRenderer(beatmap)
+                        new ManiaHitRenderer(beatmap, false)
                         {
                             Scale = new Vector2(0.5f),
                             Anchor = Anchor.BottomRight,

osu.Desktop.VisualTests/Tests/TestCaseManiaHitObjects.cs

@@ -43,13 +43,8 @@ namespace osu.Desktop.VisualTests.Tests
                                 RelativeCoordinateSpace = new Vector2(1, 10000),
                                 Children = new[]
                                 {
-                                    new DrawableNote(new Note
+                                    new DrawableNote(new Note { StartTime = 5000 }) { AccentColour = Color4.Red },
-                                    {
+                                    new DrawableNote(new Note { StartTime = 6000 }) { AccentColour = Color4.Red }
-                                        StartTime = 5000
-                                    })
-                                    {
-                                        AccentColour = Color4.Red
-                                    }
                                 }
                             }
                         }
@@ -74,10 +69,7 @@ namespace osu.Desktop.VisualTests.Tests
                                     {
                                         StartTime = 5000,
                                         Duration = 1000
-                                    })
+                                    }) { AccentColour = Color4.Red }
-                                    {
-                                        AccentColour = Color4.Red
-                                    }
                                 }
                             }
                         }

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Catch
 {
     public class CatchRuleset : Ruleset
     {
-        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap) => new CatchHitRenderer(beatmap);
+        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap, bool isForCurrentRuleset) => new CatchHitRenderer(beatmap, isForCurrentRuleset);
 
         public override IEnumerable<Mod> GetModsFor(ModType type)
         {

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

@@ -15,8 +15,8 @@ namespace osu.Game.Rulesets.Catch.UI
 {
     public class CatchHitRenderer : HitRenderer<CatchBaseHit, CatchJudgement>
     {
-        public CatchHitRenderer(WorkingBeatmap beatmap)
+        public CatchHitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
-            : base(beatmap)
+            : base(beatmap, isForCurrentRuleset)
         {
         }
 

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

@@ -1,35 +1,153 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Game.Beatmaps;
-using osu.Game.Rulesets.Mania.Objects;
-using System.Collections.Generic;
-using System;
-using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Beatmaps;
+using osu.Game.Rulesets.Mania.Objects;
+using System;
+using System.Collections.Generic;
+using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
-using OpenTK;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Mania.Beatmaps.Patterns;
+using osu.Game.Rulesets.Mania.MathUtils;
+using osu.Game.Database;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
-    internal class ManiaBeatmapConverter : BeatmapConverter<ManiaHitObject>
+    public class ManiaBeatmapConverter : BeatmapConverter<ManiaHitObject>
     {
         protected override IEnumerable<Type> ValidConversionTypes { get; } = new[] { typeof(IHasXPosition) };
 
+        private Pattern lastPattern = new Pattern();
+        private FastRandom random;
+        private Beatmap beatmap;
+        private bool isForCurrentRuleset;
+
+        protected override Beatmap<ManiaHitObject> ConvertBeatmap(Beatmap original, bool isForCurrentRuleset)
+        {
+            this.isForCurrentRuleset = isForCurrentRuleset;
+
+            beatmap = original;
+
+            BeatmapDifficulty difficulty = original.BeatmapInfo.Difficulty;
+
+            int seed = (int)Math.Round(difficulty.DrainRate + difficulty.CircleSize) * 20 + (int)(difficulty.OverallDifficulty * 41.2) + (int)Math.Round(difficulty.ApproachRate);
+            random = new FastRandom(seed);
+
+            return base.ConvertBeatmap(original, isForCurrentRuleset);
+        }
+
         protected override IEnumerable<ManiaHitObject> ConvertHitObject(HitObject original, Beatmap beatmap)
         {
-            int availableColumns = (int)Math.Round(beatmap.BeatmapInfo.Difficulty.CircleSize);
+            var maniaOriginal = original as ManiaHitObject;
-
+            if (maniaOriginal != null)
-            var positionData = original as IHasXPosition;
-
-            float localWDivisor = 512.0f / availableColumns;
-            int column = MathHelper.Clamp((int)Math.Floor((positionData?.X ?? 1) / localWDivisor), 0, availableColumns - 1);
-
-            yield return new Note
             {
-                StartTime = original.StartTime,
+                yield return maniaOriginal;
-                Column = column,
+                yield break;
-            };
+            }
+
+            var objects = isForCurrentRuleset ? generateSpecific(original) : generateConverted(original);
+
+            if (objects == null)
+                yield break;
+
+            foreach (ManiaHitObject obj in objects)
+                yield return obj;
+        }
+
+        /// <summary>
+        /// Method that generates hit objects for osu!mania specific beatmaps.
+        /// </summary>
+        /// <param name="original">The original hit object.</param>
+        /// <returns>The hit objects generated.</returns>
+        private IEnumerable<ManiaHitObject> generateSpecific(HitObject original)
+        {
+            var generator = new SpecificBeatmapPatternGenerator(random, original, beatmap, lastPattern);
+
+            Pattern newPattern = generator.Generate();
+            lastPattern = newPattern;
+
+            return newPattern.HitObjects;
+        }
+
+        /// <summary>
+        /// Method that generates hit objects for non-osu!mania beatmaps.
+        /// </summary>
+        /// <param name="original">The original hit object.</param>
+        /// <returns>The hit objects generated.</returns>
+        private IEnumerable<ManiaHitObject> generateConverted(HitObject original)
+        {
+            var endTimeData = original as IHasEndTime;
+            var distanceData = original as IHasDistance;
+            var positionData = original as IHasPosition;
+
+            // Following lines currently commented out to appease resharper
+
+            //Patterns.PatternGenerator conversion = null;
+
+            if (distanceData != null)
+            {
+                // Slider
+            }
+            else if (endTimeData != null)
+            {
+                // Spinner
+            }
+            else if (positionData != null)
+            {
+                // Circle
+            }
+
+            //if (conversion == null)
+            return null;
+
+            //Pattern newPattern = conversion.Generate();
+            //lastPattern = newPattern;
+
+            //return newPattern.HitObjects;
+        }
+
+        /// <summary>
+        /// A pattern generator for osu!mania-specific beatmaps.
+        /// </summary>
+        private class SpecificBeatmapPatternGenerator : Patterns.Legacy.PatternGenerator
+        {
+            public SpecificBeatmapPatternGenerator(FastRandom random, HitObject hitObject, Beatmap beatmap, Pattern previousPattern)
+                : base(random, hitObject, beatmap, previousPattern)
+            {
+            }
+
+            public override Pattern Generate()
+            {
+                var endTimeData = HitObject as IHasEndTime;
+                var positionData = HitObject as IHasXPosition;
+
+                int column = GetColumn(positionData?.X ?? 0);
+
+                var pattern = new Pattern();
+
+                if (endTimeData != null)
+                {
+                    pattern.Add(new HoldNote
+                    {
+                        StartTime = HitObject.StartTime,
+                        Samples = HitObject.Samples,
+                        Duration = endTimeData.Duration,
+                        Column = column,
+                    });
+                }
+                else if (positionData != null)
+                {
+                    pattern.Add(new Note
+                    {
+                        StartTime = HitObject.StartTime,
+                        Samples = HitObject.Samples,
+                        Column = column
+                    });
+                }
+
+                return pattern;
+            }
         }
     }
 }

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

@@ -0,0 +1,106 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
+using osu.Game.Rulesets.Mania.MathUtils;
+using osu.Game.Rulesets.Objects;
+using OpenTK;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
+{
+    /// <summary>
+    /// A pattern generator for legacy hit objects.
+    /// </summary>
+    internal abstract class PatternGenerator : Patterns.PatternGenerator
+    {
+        /// <summary>
+        /// The column index at which to start generating random notes.
+        /// </summary>
+        protected readonly int RandomStart;
+
+        /// <summary>
+        /// The random number generator to use.
+        /// </summary>
+        protected readonly FastRandom Random;
+
+        protected PatternGenerator(FastRandom random, HitObject hitObject, Beatmap beatmap, Pattern previousPattern)
+            : base(hitObject, beatmap, previousPattern)
+        {
+            Random = random;
+
+            RandomStart = AvailableColumns == 8 ? 1 : 0;
+        }
+
+        /// <summary>
+        /// Converts an x-position into a column.
+        /// </summary>
+        /// <param name="position">The x-position.</param>
+        /// <param name="allowSpecial">Whether to treat as 7K + 1.</param>
+        /// <returns>The column.</returns>
+        protected int GetColumn(float position, bool allowSpecial = false)
+        {
+            if (allowSpecial && AvailableColumns == 8)
+            {
+                const float local_x_divisor = 512f / 7;
+                return MathHelper.Clamp((int)Math.Floor(position / local_x_divisor), 0, 6) + 1;
+            }
+
+            float localXDivisor = 512f / AvailableColumns;
+            return MathHelper.Clamp((int)Math.Floor(position / localXDivisor), 0, AvailableColumns - 1);
+        }
+
+        /// <summary>
+        /// Generates a count of notes to be generated from probabilities.
+        /// </summary>
+        /// <param name="p2">Probability for 2 notes to be generated.</param>
+        /// <param name="p3">Probability for 3 notes to be generated.</param>
+        /// <param name="p4">Probability for 4 notes to be generated.</param>
+        /// <param name="p5">Probability for 5 notes to be generated.</param>
+        /// <param name="p6">Probability for 6 notes to be generated.</param>
+        /// <returns>The amount of notes to be generated.</returns>
+        protected int GetRandomNoteCount(double p2, double p3, double p4 = 0, double p5 = 0, double p6 = 0)
+        {
+            double val = Random.NextDouble();
+            if (val >= 1 - p6)
+                return 6;
+            if (val >= 1 - p5)
+                return 5;
+            if (val >= 1 - p4)
+                return 4;
+            if (val >= 1 - p3)
+                return 3;
+            return val >= 1 - p2 ? 2 : 1;
+        }
+
+        private double? conversionDifficulty;
+        /// <summary>
+        /// A difficulty factor used for various conversion methods from osu!stable.
+        /// </summary>
+        protected double ConversionDifficulty
+        {
+            get
+            {
+                if (conversionDifficulty != null)
+                    return conversionDifficulty.Value;
+
+                HitObject lastObject = Beatmap.HitObjects.LastOrDefault();
+                HitObject firstObject = Beatmap.HitObjects.FirstOrDefault();
+
+                double drainTime = (lastObject?.StartTime ?? 0) - (firstObject?.StartTime ?? 0);
+                drainTime -= Beatmap.EventInfo.TotalBreakTime;
+
+                if (drainTime == 0)
+                    drainTime = 10000;
+
+                BeatmapDifficulty difficulty = Beatmap.BeatmapInfo.Difficulty;
+                conversionDifficulty = ((difficulty.DrainRate + MathHelper.Clamp(difficulty.ApproachRate, 4, 7)) / 1.5 + Beatmap.HitObjects.Count / drainTime * 9f) / 38f * 5f / 1.15;
+                conversionDifficulty = Math.Min(conversionDifficulty.Value, 12);
+
+                return conversionDifficulty.Value;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,65 @@
+// 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;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
+{
+    /// <summary>
+    /// The type of pattern to generate. Used for legacy patterns.
+    /// </summary>
+    [Flags]
+    internal enum PatternType
+    {
+        None = 0,
+        /// <summary>
+        /// Keep the same as last row.
+        /// </summary>
+        ForceStack = 1,
+        /// <summary>
+        /// Keep different from last row.
+        /// </summary>
+        ForceNotStack = 2,
+        /// <summary>
+        /// Keep as single note at its original position.
+        /// </summary>
+        KeepSingle = 4,
+        /// <summary>
+        /// Use a lower random value.
+        /// </summary>
+        LowProbability = 8,
+        /// <summary>
+        /// Reserved.
+        /// </summary>
+        Alternate = 16,
+        /// <summary>
+        /// Ignore the repeat count.
+        /// </summary>
+        ForceSigSlider = 32,
+        /// <summary>
+        /// Convert slider to circle.
+        /// </summary>
+        ForceNotSlider = 64,
+        /// <summary>
+        /// Notes gathered together.
+        /// </summary>
+        Gathered = 128,
+        Mirror = 256,
+        /// <summary>
+        /// Change 0 -> 6.
+        /// </summary>
+        Reverse = 512,
+        /// <summary>
+        /// 1 -> 5 -> 1 -> 5 like reverse.
+        /// </summary>
+        Cycle = 1024,
+        /// <summary>
+        /// Next note will be at column + 1.
+        /// </summary>
+        Stair = 2048,
+        /// <summary>
+        /// Next note will be at column - 1.
+        /// </summary>
+        ReverseStair = 4096
+    }
+}

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

@@ -0,0 +1,61 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Game.Rulesets.Mania.Objects;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
+{
+    /// <summary>
+    /// Creates a pattern containing hit objects.
+    /// </summary>
+    internal class Pattern
+    {
+        private readonly List<ManiaHitObject> hitObjects = new List<ManiaHitObject>();
+
+        /// <summary>
+        /// All the hit objects contained in this pattern.
+        /// </summary>
+        public IEnumerable<ManiaHitObject> HitObjects => hitObjects;
+
+        /// <summary>
+        /// Whether this pattern already contains a hit object in a code.
+        /// </summary>
+        /// <param name="column">The column index.</param>
+        /// <returns>Whether this pattern already contains a hit object in <paramref name="column"/></returns>
+        public bool IsFilled(int column) => hitObjects.Exists(h => h.Column == column);
+
+        /// <summary>
+        /// Amount of columns taken up by hit objects in this pattern.
+        /// </summary>
+        public int ColumnsFilled => HitObjects.GroupBy(h => h.Column).Count();
+
+        /// <summary>
+        /// Adds a hit object to this pattern.
+        /// </summary>
+        /// <param name="hitObject">The hit object to add.</param>
+        public void Add(ManiaHitObject hitObject) => hitObjects.Add(hitObject);
+
+        /// <summary>
+        /// Copies hit object from another pattern to this one.
+        /// </summary>
+        /// <param name="other">The other pattern.</param>
+        public void Add(Pattern other)
+        {
+            other.HitObjects.ForEach(Add);
+        }
+
+        /// <summary>
+        /// Clears this pattern, removing all hit objects.
+        /// </summary>
+        public void Clear() => hitObjects.Clear();
+
+        /// <summary>
+        /// Removes a hit object from this pattern.
+        /// </summary>
+        /// <param name="hitObject">The hit object to remove.</param>
+        public bool Remove(ManiaHitObject hitObject) => hitObjects.Remove(hitObject);
+    }
+}

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

@@ -0,0 +1,50 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Objects;
+
+namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
+{
+    /// <summary>
+    /// Generator to create a pattern <see cref="Pattern"/> from a hit object.
+    /// </summary>
+    internal abstract class PatternGenerator
+    {
+        /// <summary>
+        /// The number of columns available to create the pattern.
+        /// </summary>
+        protected readonly int AvailableColumns;
+
+        /// <summary>
+        /// The last pattern.
+        /// </summary>
+        protected readonly Pattern PreviousPattern;
+
+        /// <summary>
+        /// The hit object to create the pattern for.
+        /// </summary>
+        protected readonly HitObject HitObject;
+
+        /// <summary>
+        /// The beatmap which <see cref="HitObject"/> is a part of.
+        /// </summary>
+        protected readonly Beatmap Beatmap;
+
+        protected PatternGenerator(HitObject hitObject, Beatmap beatmap, Pattern previousPattern)
+        {
+            PreviousPattern = previousPattern;
+            HitObject = hitObject;
+            Beatmap = beatmap;
+
+            AvailableColumns = (int)Math.Round(beatmap.BeatmapInfo.Difficulty.CircleSize);
+        }
+
+        /// <summary>
+        /// Generates the pattern for <see cref="HitObject"/>, filled with hit objects.
+        /// </summary>
+        /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
+        public abstract Pattern Generate();
+    }
+}

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -16,7 +16,7 @@ namespace osu.Game.Rulesets.Mania
 {
     public class ManiaRuleset : Ruleset
     {
-        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap) => new ManiaHitRenderer(beatmap);
+        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap, bool isForCurrentRuleset) => new ManiaHitRenderer(beatmap, isForCurrentRuleset);
 
         public override IEnumerable<Mod> GetModsFor(ModType type)
         {

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

@@ -10,7 +10,7 @@ namespace osu.Game.Rulesets.Mania.MathUtils
     /// </summary>
     internal class FastRandom
     {
-        private const double uint_to_real = 1.0 / (int.MaxValue + 1.0);
+        private const double uint_to_real = 1.0 / (uint.MaxValue + 1.0);
         private const uint int_mask = 0x7FFFFFFF;
         private const uint y = 842502087;
         private const uint z = 3579807591;

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

@@ -38,7 +38,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                 tailPiece = new NotePiece
                 {
                     Anchor = Anchor.BottomCentre,
-                    Origin = Anchor.BottomCentre
+                    Origin = Anchor.TopCentre
                 }
             });
         }
@@ -61,5 +61,16 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         protected override void UpdateState(ArmedState state)
         {
         }
+
+        protected override void Update()
+        {
+            if (Time.Current > HitObject.StartTime)
+                headPiece.Colour = Color4.Green;
+            if (Time.Current > HitObject.EndTime)
+            {
+                bodyPiece.Colour = Color4.Green;
+                tailPiece.Colour = Color4.Green;
+            }
+        }
     }
 }

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

@@ -3,8 +3,6 @@
 
 using OpenTK.Graphics;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
 
@@ -15,8 +13,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     {
         public new TObject HitObject;
 
-        private readonly Container glowContainer;
-
         protected DrawableManiaHitObject(TObject hitObject)
             : base(hitObject)
         {
@@ -24,21 +20,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
             RelativePositionAxes = Axes.Y;
             Y = (float)HitObject.StartTime;
-
-            Add(glowContainer = new Container
-            {
-                RelativeSizeAxes = Axes.Both,
-                Masking = true,
-                Children = new[]
-                {
-                    new Box
-                    {
-                        RelativeSizeAxes = Axes.Both,
-                        Alpha = 0,
-                        AlwaysPresent = true
-                    }
-                }
-            });
         }
 
         public override Color4 AccentColour
@@ -49,13 +30,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                 if (base.AccentColour == value)
                     return;
                 base.AccentColour = value;
-
-                glowContainer.EdgeEffect = new EdgeEffect
-                {
-                    Type = EdgeEffectType.Glow,
-                    Radius = 5,
-                    Colour = value
-                };
             }
         }
 

osu.Game.Rulesets.Mania/Objects/Drawables/Pieces/BodyPiece.cs

@@ -19,7 +19,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
         public BodyPiece()
         {
             RelativeSizeAxes = Axes.Both;
-            Masking = true;
 
             Children = new[]
             {

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

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

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

@@ -24,8 +24,8 @@ namespace osu.Game.Rulesets.Mania.UI
     {
         public int? Columns;
 
-        public ManiaHitRenderer(WorkingBeatmap beatmap)
+        public ManiaHitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
-            : base(beatmap)
+            : base(beatmap, isForCurrentRuleset)
         {
         }
 
@@ -49,7 +49,7 @@ namespace osu.Game.Rulesets.Mania.UI
                 return t;
             });
 
-            double lastObjectTime = (Objects.Last() as IHasEndTime)?.EndTime ?? Objects.Last().StartTime;
+            double lastObjectTime = (Objects.LastOrDefault() as IHasEndTime)?.EndTime ?? Objects.LastOrDefault()?.StartTime ?? double.MaxValue;
 
             // Perform some post processing of the timing changes
             timingChanges = timingChanges
@@ -76,6 +76,10 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected override DrawableHitObject<ManiaHitObject, ManiaJudgement> GetVisualRepresentation(ManiaHitObject h)
         {
+            var holdNote = h as HoldNote;
+            if (holdNote != null)
+                return new DrawableHoldNote(holdNote);
+
             var note = h as Note;
             if (note != null)
                 return new DrawableNote(note);

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

@@ -47,7 +47,11 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Beatmaps\Patterns\Legacy\PatternGenerator.cs" />
+    <Compile Include="Beatmaps\Patterns\PatternGenerator.cs" />
+    <Compile Include="Beatmaps\Patterns\Legacy\PatternType.cs" />
     <Compile Include="Beatmaps\ManiaBeatmapConverter.cs" />
+    <Compile Include="Beatmaps\Patterns\Pattern.cs" />
     <Compile Include="MathUtils\FastRandom.cs" />
     <Compile Include="Judgements\HitWindows.cs" />
     <Compile Include="Judgements\ManiaJudgement.cs" />

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Osu
 {
     public class OsuRuleset : Ruleset
     {
-        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap) => new OsuHitRenderer(beatmap);
+        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap, bool isForCurrentRuleset) => new OsuHitRenderer(beatmap, isForCurrentRuleset);
 
         public override IEnumerable<BeatmapStatistic> GetBeatmapStatistics(WorkingBeatmap beatmap) => new[]
         {

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

@@ -18,8 +18,8 @@ namespace osu.Game.Rulesets.Osu.UI
 {
     public class OsuHitRenderer : HitRenderer<OsuHitObject, OsuJudgement>
     {
-        public OsuHitRenderer(WorkingBeatmap beatmap)
+        public OsuHitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
-            : base(beatmap)
+            : base(beatmap, isForCurrentRuleset)
         {
         }
 

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

@@ -41,13 +41,13 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
 
         protected override IEnumerable<Type> ValidConversionTypes { get; } = new[] { typeof(HitObject) };
 
-        protected override Beatmap<TaikoHitObject> ConvertBeatmap(Beatmap original)
+        protected override Beatmap<TaikoHitObject> ConvertBeatmap(Beatmap original, bool isForCurrentRuleset)
         {
             // Rewrite the beatmap info to add the slider velocity multiplier
             BeatmapInfo info = original.BeatmapInfo.DeepClone();
             info.Difficulty.SliderMultiplier *= legacy_velocity_multiplier;
 
-            Beatmap<TaikoHitObject> converted = base.ConvertBeatmap(original);
+            Beatmap<TaikoHitObject> converted = base.ConvertBeatmap(original, isForCurrentRuleset);
 
             // Post processing step to transform hit objects with the same start time into strong hits
             converted.HitObjects = converted.HitObjects.GroupBy(t => t.StartTime).Select(x =>

osu.Game.Rulesets.Taiko/TaikoRuleset.cs

@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Taiko
 {
     public class TaikoRuleset : Ruleset
     {
-        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap) => new TaikoHitRenderer(beatmap);
+        public override HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap, bool isForCurrentRuleset) => new TaikoHitRenderer(beatmap, isForCurrentRuleset);
 
         public override IEnumerable<Mod> GetModsFor(ModType type)
         {

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

@@ -22,8 +22,8 @@ namespace osu.Game.Rulesets.Taiko.UI
 {
     public class TaikoHitRenderer : HitRenderer<TaikoHitObject, TaikoJudgement>
     {
-        public TaikoHitRenderer(WorkingBeatmap beatmap)
+        public TaikoHitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
-            : base(beatmap)
+            : base(beatmap, isForCurrentRuleset)
         {
         }
 

osu.Game/Beatmaps/Beatmap.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
+using osu.Game.Beatmaps.Events;
 using osu.Game.Beatmaps.Timing;
 using osu.Game.Database;
 using osu.Game.Rulesets.Objects;
@@ -17,6 +18,7 @@ namespace osu.Game.Beatmaps
     {
         public BeatmapInfo BeatmapInfo;
         public TimingInfo TimingInfo = new TimingInfo();
+        public EventInfo EventInfo = new EventInfo();
         public readonly List<Color4> ComboColors = new List<Color4>
         {
             new Color4(17, 136, 170, 255),
@@ -40,6 +42,7 @@ namespace osu.Game.Beatmaps
         {
             BeatmapInfo = original?.BeatmapInfo ?? BeatmapInfo;
             TimingInfo = original?.TimingInfo ?? TimingInfo;
+            EventInfo = original?.EventInfo ?? EventInfo;
             ComboColors = original?.ComboColors ?? ComboColors;
         }
     }

osu.Game/Beatmaps/DifficultyCalculator.cs

@@ -34,7 +34,7 @@ namespace osu.Game.Beatmaps
 
         protected DifficultyCalculator(Beatmap beatmap)
         {
-            Objects = CreateBeatmapConverter().Convert(beatmap).HitObjects;
+            Objects = CreateBeatmapConverter().Convert(beatmap, true).HitObjects;
 
             foreach (var h in Objects)
                 h.ApplyDefaults(beatmap.TimingInfo, beatmap.BeatmapInfo.Difficulty);

osu.Game/Beatmaps/Events/BackgroundEvent.cs

@@ -3,14 +3,11 @@
 
 namespace osu.Game.Beatmaps.Events
 {
-    public enum EventType
+    public class BackgroundEvent : Event
     {
-        Background = 0,
+        /// <summary>
-        Video = 1,
+        /// The file name.
-        Break = 2,
+        /// </summary>
-        Colour = 3,
+        public string Filename;
-        Sprite = 4,
-        Sample = 5,
-        Animation = 6
     }
-}
+}

osu.Game/Beatmaps/Events/BreakEvent.cs

@@ -0,0 +1,28 @@
+// 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.Events
+{
+    public class BreakEvent : Event
+    {
+        /// <summary>
+        /// The minimum duration required for a break to have any effect.
+        /// </summary>
+        private const double min_break_duration = 650;
+
+        /// <summary>
+        /// The break end time.
+        /// </summary>
+        public double EndTime;
+
+        /// <summary>
+        /// The duration of the break.
+        /// </summary>
+        public double Duration => EndTime - StartTime;
+
+        /// <summary>
+        /// Whether the break has any effect. Breaks that are too short are culled before they reach the EventInfo.
+        /// </summary>
+        public bool HasEffect => Duration >= min_break_duration;
+    }
+}

osu.Game/Beatmaps/Events/Event.cs

@@ -0,0 +1,13 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Beatmaps.Events
+{
+    public abstract class Event
+    {
+        /// <summary>
+        /// The event start time.
+        /// </summary>
+        public double StartTime;
+    }
+}

osu.Game/Beatmaps/Events/EventInfo.cs

@@ -0,0 +1,33 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace osu.Game.Beatmaps.Events
+{
+    public class EventInfo
+    {
+        /// <summary>
+        /// All the background events.
+        /// </summary>
+        public readonly List<BackgroundEvent> Backgrounds = new List<BackgroundEvent>();
+
+        /// <summary>
+        /// All the break events.
+        /// </summary>
+        public readonly List<BreakEvent> Breaks = new List<BreakEvent>();
+
+        /// <summary>
+        /// Total duration of all breaks.
+        /// </summary>
+        public double TotalBreakTime => Breaks.Sum(b => b.Duration);
+
+        /// <summary>
+        /// Retrieves the active background at a time.
+        /// </summary>
+        /// <param name="time">The time to retrieve the background at.</param>
+        /// <returns>The background.</returns>
+        public BackgroundEvent BackgroundAt(double time) => Backgrounds.FirstOrDefault(b => b.StartTime <= time);
+    }
+}

osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs

@@ -204,23 +204,42 @@ namespace osu.Game.Beatmaps.Formats
 
         private void handleEvents(Beatmap beatmap, string val)
         {
-            if (val.StartsWith(@"//"))
-                return;
-            if (val.StartsWith(@" "))
-                return; // TODO
             string[] split = val.Split(',');
+
             EventType type;
-            int intType;
+            if (!Enum.TryParse(split[0], out type))
-            if (!int.TryParse(split[0], out intType))
+                throw new InvalidDataException($@"Unknown event type {split[0]}");
+
+            // Todo: Implement the rest
+            switch (type)
             {
-                if (!Enum.TryParse(split[0], out type))
+                case EventType.Video:
-                    throw new InvalidDataException($@"Unknown event type {split[0]}");
+                case EventType.Background:
+                    string filename = split[2].Trim('"');
+
+                    beatmap.EventInfo.Backgrounds.Add(new BackgroundEvent
+                    {
+                        StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
+                        Filename = filename
+                    });
+
+                    if (type == EventType.Background)
+                        beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
+
+                    break;
+                case EventType.Break:
+                    var breakEvent = new BreakEvent
+                    {
+                        StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
+                        EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
+                    };
+
+                    if (!breakEvent.HasEffect)
+                        return;
+
+                    beatmap.EventInfo.Breaks.Add(breakEvent);
+                    break;
             }
-            else
-                type = (EventType)intType;
-            // TODO: Parse and store the rest of the event
-            if (type == EventType.Background)
-                beatmap.BeatmapInfo.Metadata.BackgroundFile = split[2].Trim('"');
         }
 
         private void handleTimingPoints(Beatmap beatmap, string val)
@@ -330,6 +349,9 @@ namespace osu.Game.Beatmaps.Formats
                 if (string.IsNullOrEmpty(line))
                     continue;
 
+                if (line.StartsWith(" ") || line.StartsWith("_") || line.StartsWith("//"))
+                    continue;
+
                 if (line.StartsWith(@"osu file format v"))
                 {
                     beatmap.BeatmapInfo.BeatmapVersion = int.Parse(line.Substring(17));
@@ -390,5 +412,16 @@ namespace osu.Game.Beatmaps.Formats
             Soft = 2,
             Drum = 3
         }
+
+        internal enum EventType
+        {
+            Background = 0,
+            Video = 1,
+            Break = 2,
+            Colour = 3,
+            Sprite = 4,
+            Sample = 5,
+            Animation = 6
+        }
     }
 }

osu.Game/Rulesets/Beatmaps/BeatmapConverter.cs

@@ -26,19 +26,21 @@ namespace osu.Game.Rulesets.Beatmaps
         /// Converts a Beatmap using this Beatmap Converter.
         /// </summary>
         /// <param name="original">The un-converted Beatmap.</param>
+        /// <param name="isForCurrentRuleset">Whether to assume the beatmap is for the current ruleset.</param>
         /// <returns>The converted Beatmap.</returns>
-        public Beatmap<T> Convert(Beatmap original)
+        public Beatmap<T> Convert(Beatmap original, bool isForCurrentRuleset)
         {
             // We always operate on a clone of the original beatmap, to not modify it game-wide
-            return ConvertBeatmap(new Beatmap(original));
+            return ConvertBeatmap(new Beatmap(original), isForCurrentRuleset);
         }
 
         /// <summary>
         /// Performs the conversion of a Beatmap using this Beatmap Converter.
         /// </summary>
         /// <param name="original">The un-converted Beatmap.</param>
+        /// <param name="isForCurrentRuleset">Whether to assume the beatmap is for the current ruleset.</param>
         /// <returns>The converted Beatmap.</returns>
-        protected virtual Beatmap<T> ConvertBeatmap(Beatmap original)
+        protected virtual Beatmap<T> ConvertBeatmap(Beatmap original, bool isForCurrentRuleset)
         {
             return new Beatmap<T>
             {

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

@@ -43,5 +43,10 @@ namespace osu.Game.Rulesets.Objects.Legacy.Catch
                 EndTime = endTime
             };
         }
+
+        protected override HitObject CreateHold(Vector2 position, bool newCombo, double endTime)
+        {
+            return null;
+        }
     }
 }

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

@@ -8,6 +8,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.Audio;
+using System.Linq;
 
 namespace osu.Game.Rulesets.Objects.Legacy
 {
@@ -26,7 +27,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
             var soundType = (LegacySoundType)int.Parse(split[4]);
             var bankInfo = new SampleBankInfo();
 
-            HitObject result;
+            HitObject result = null;
 
             if ((type & ConvertHitObjectType.Circle) > 0)
             {
@@ -140,17 +141,20 @@ namespace osu.Game.Rulesets.Objects.Legacy
             {
                 // Note: Hold is generated by BMS converts
 
-                // Todo: Apparently end time is determined by samples??
+                double endTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture);
-                // Shouldn't need implementation until mania
 
-                result = new ConvertHold
+                if (split.Length > 5 && !string.IsNullOrEmpty(split[5]))
                 {
-                    Position = new Vector2(int.Parse(split[0]), int.Parse(split[1])),
+                    string[] ss = split[5].Split(':');
-                    NewCombo = combo
+                    endTime = Convert.ToDouble(ss[0], CultureInfo.InvariantCulture);
-                };
+                    readCustomSampleBanks(string.Join(":", ss.Skip(1)), bankInfo);
+                }
+
+                result = CreateHold(new Vector2(int.Parse(split[0]), int.Parse(split[1])), combo, endTime);
             }
-            else
+
-                throw new InvalidOperationException($@"Unknown hit object type {type}");
+            if (result == null)
+                throw new InvalidOperationException($@"Unknown hit object type {type}.");
 
             result.StartTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture);
             result.Samples = convertSoundType(soundType, bankInfo);
@@ -214,6 +218,14 @@ namespace osu.Game.Rulesets.Objects.Legacy
         /// <returns>The hit object.</returns>
         protected abstract HitObject CreateSpinner(Vector2 position, double endTime);
 
+        /// <summary>
+        /// Creates a legacy Hold-type hit object.
+        /// </summary>
+        /// <param name="position">The position of the hit object.</param>
+        /// <param name="newCombo">Whether the hit object creates a new combo.</param>
+        /// <param name="endTime">The hold end time.</param>
+        protected abstract HitObject CreateHold(Vector2 position, bool newCombo, double endTime);
+
         private SampleInfoList convertSoundType(LegacySoundType type, SampleBankInfo bankInfo)
         {
             var soundTypes = new SampleInfoList

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

@@ -1,22 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using OpenTK;
-using osu.Game.Rulesets.Objects.Types;
-
-namespace osu.Game.Rulesets.Objects.Legacy
-{
-    /// <summary>
-    /// Legacy Hold-type, used for parsing "specials" in beatmaps.
-    /// </summary>
-    internal sealed class ConvertHold : HitObject, IHasPosition, IHasCombo, IHasHold
-    {
-        public Vector2 Position { get; set; }
-
-        public float X => Position.X;
-
-        public float Y => Position.Y;
-
-        public bool NewCombo { get; set; }
-    }
-}

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

@@ -44,5 +44,14 @@ namespace osu.Game.Rulesets.Objects.Legacy.Mania
                 EndTime = endTime
             };
         }
+
+        protected override HitObject CreateHold(Vector2 position, bool newCombo, double endTime)
+        {
+            return new ConvertHold
+            {
+                X = position.X,
+                EndTime = endTime
+            };
+        }
     }
 }

osu.Game/Rulesets/Objects/Legacy/Mania/ConvertHold.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 osu.Game.Rulesets.Objects.Types;
+
+namespace osu.Game.Rulesets.Objects.Legacy.Mania
+{
+    internal sealed class ConvertHold : HitObject, IHasXPosition, IHasEndTime
+    {
+        public float X { get; set; }
+
+        public double EndTime { get; set; }
+
+        public double Duration => EndTime - StartTime;
+    }
+}

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

@@ -44,5 +44,10 @@ namespace osu.Game.Rulesets.Objects.Legacy.Osu
                 EndTime = endTime
             };
         }
+
+        protected override HitObject CreateHold(Vector2 position, bool newCombo, double endTime)
+        {
+            return null;
+        }
     }
 }

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

@@ -41,5 +41,10 @@ namespace osu.Game.Rulesets.Objects.Legacy.Taiko
                 EndTime = endTime
             };
         }
+
+        protected override HitObject CreateHold(Vector2 position, bool newCombo, double endTime)
+        {
+            return null;
+        }
     }
 }

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

@@ -8,5 +8,9 @@ namespace osu.Game.Rulesets.Objects.Types
     /// </summary>
     public interface IHasHold
     {
+        /// <summary>
+        /// The time at which the hold ends.
+        /// </summary>
+        double EndTime { get; }
     }
 }

osu.Game/Rulesets/Ruleset.cs

@@ -18,12 +18,13 @@ namespace osu.Game.Rulesets
         public abstract IEnumerable<Mod> GetModsFor(ModType type);
 
         /// <summary>
-        /// Attempt to create a HitRenderer for the provided beatmap.
+        /// Attempt to create a hit renderer for a beatmap
         /// </summary>
-        /// <param name="beatmap"></param>
+        /// <param name="beatmap">The beatmap to create the hit renderer for.</param>
+        /// <param name="isForCurrentRuleset">Whether the hit renderer should assume the beatmap is for the current ruleset.</param>
         /// <exception cref="BeatmapInvalidForRulesetException">Unable to successfully load the beatmap to be usable with this ruleset.</exception>
         /// <returns></returns>
-        public abstract HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap);
+        public abstract HitRenderer CreateHitRendererWith(WorkingBeatmap beatmap, bool isForCurrentRuleset);
 
         public abstract DifficultyCalculator CreateDifficultyCalculator(Beatmap beatmap);
 

osu.Game/Rulesets/UI/HitRenderer.cs

@@ -66,7 +66,7 @@ namespace osu.Game.Rulesets.UI
         /// </summary>
         protected abstract bool AllObjectsJudged { get; }
 
-        protected HitRenderer()
+        internal HitRenderer()
         {
             KeyConversionInputManager = CreateKeyConversionInputManager();
             KeyConversionInputManager.RelativeSizeAxes = Axes.Both;
@@ -120,7 +120,12 @@ namespace osu.Game.Rulesets.UI
         /// </summary>
         public Beatmap<TObject> Beatmap;
 
-        protected HitRenderer(WorkingBeatmap beatmap)
+        /// <summary>
+        /// Creates a hit renderer for a beatmap.
+        /// </summary>
+        /// <param name="beatmap">The beatmap to create the hit renderer for.</param>
+        /// <param name="isForCurrentRuleset">Whether to assume the beatmap is for the current ruleset.</param>
+        internal HitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
         {
             Debug.Assert(beatmap != null, "HitRenderer initialized with a null beatmap.");
 
@@ -134,7 +139,7 @@ namespace osu.Game.Rulesets.UI
                 throw new BeatmapInvalidForRulesetException($"{nameof(Beatmap)} can't be converted for the current ruleset.");
 
             // Convert the beatmap
-            Beatmap = converter.Convert(beatmap.Beatmap);
+            Beatmap = converter.Convert(beatmap.Beatmap, isForCurrentRuleset);
 
             // Apply defaults
             foreach (var h in Beatmap.HitObjects)
@@ -201,8 +206,13 @@ namespace osu.Game.Rulesets.UI
 
         private readonly List<DrawableHitObject<TObject, TJudgement>> drawableObjects = new List<DrawableHitObject<TObject, TJudgement>>();
 
-        protected HitRenderer(WorkingBeatmap beatmap)
+        /// <summary>
-            : base(beatmap)
+        /// Creates a hit renderer for a beatmap.
+        /// </summary>
+        /// <param name="beatmap">The beatmap to create the hit renderer for.</param>
+        /// <param name="isForCurrentRuleset">Whether to assume the beatmap is for the current ruleset.</param>
+        protected HitRenderer(WorkingBeatmap beatmap, bool isForCurrentRuleset)
+            : base(beatmap, isForCurrentRuleset)
         {
             InputManager.Add(content = new Container
             {

osu.Game/Screens/Play/Player.cs

@@ -89,7 +89,7 @@ namespace osu.Game.Screens.Play
 
                 try
                 {
-                    HitRenderer = rulesetInstance.CreateHitRendererWith(Beatmap);
+                    HitRenderer = rulesetInstance.CreateHitRendererWith(Beatmap, ruleset.ID == Beatmap.BeatmapInfo.Ruleset.ID);
                 }
                 catch (BeatmapInvalidForRulesetException)
                 {
@@ -97,7 +97,7 @@ namespace osu.Game.Screens.Play
                     // let's try again forcing the beatmap's ruleset.
                     ruleset = Beatmap.BeatmapInfo.Ruleset;
                     rulesetInstance = ruleset.CreateInstance();
-                    HitRenderer = rulesetInstance.CreateHitRendererWith(Beatmap);
+                    HitRenderer = rulesetInstance.CreateHitRendererWith(Beatmap, true);
                 }
 
                 if (!HitRenderer.Objects.Any())

osu.Game/osu.Game.csproj

@@ -74,6 +74,10 @@
     <Compile Include="Audio\SampleInfoList.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Beatmaps\DifficultyCalculator.cs" />
+    <Compile Include="Beatmaps\Events\BackgroundEvent.cs" />
+    <Compile Include="Beatmaps\Events\BreakEvent.cs" />
+    <Compile Include="Beatmaps\Events\Event.cs" />
+    <Compile Include="Beatmaps\Events\EventInfo.cs" />
     <Compile Include="Online\API\Requests\PostMessageRequest.cs" />
     <Compile Include="Online\Chat\ErrorMessage.cs" />
     <Compile Include="Overlays\Chat\ChatTabControl.cs" />
@@ -125,6 +129,7 @@
     <Compile Include="Rulesets\Objects\Legacy\ConvertSlider.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Mania\ConvertHit.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Mania\ConvertHitObjectParser.cs" />
+    <Compile Include="Rulesets\Objects\Legacy\Mania\ConvertHold.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Mania\ConvertSlider.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Mania\ConvertSpinner.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Osu\ConvertHitObjectParser.cs" />
@@ -161,7 +166,6 @@
     <Compile Include="Rulesets\Objects\CircularArcApproximator.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Osu\ConvertHit.cs" />
     <Compile Include="Rulesets\Objects\Legacy\ConvertHitObjectParser.cs" />
-    <Compile Include="Rulesets\Objects\Legacy\ConvertHold.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Osu\ConvertSlider.cs" />
     <Compile Include="Rulesets\Objects\Legacy\Osu\ConvertSpinner.cs" />
     <Compile Include="Rulesets\Objects\SliderCurve.cs" />
@@ -341,7 +345,6 @@
     <Compile Include="Beatmaps\Formats\BeatmapDecoder.cs" />
     <Compile Include="Beatmaps\Formats\OsuLegacyDecoder.cs" />
     <Compile Include="Beatmaps\IO\OszArchiveReader.cs" />
-    <Compile Include="Beatmaps\Events\EventType.cs" />
     <Compile Include="Graphics\UserInterface\Volume\VolumeMeter.cs" />
     <Compile Include="Database\BeatmapSetInfo.cs" />
     <Compile Include="Database\BeatmapMetadata.cs" />