Merge branch 'master' into storyboards

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

@@ -13,6 +13,7 @@ using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Database;
 using osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy;
 using OpenTK;
+using osu.Game.Audio;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
@@ -161,9 +162,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                     pattern.Add(new HoldNote
                     {
                         StartTime = HitObject.StartTime,
-                        Samples = HitObject.Samples,
                         Duration = endTimeData.Duration,
                         Column = column,
+                        Head = { Samples = sampleInfoListAt(HitObject.StartTime) },
+                        Tail = { Samples = sampleInfoListAt(endTimeData.EndTime) },
                     });
                 }
                 else if (positionData != null)
@@ -178,6 +180,24 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 return pattern;
             }
+
+            /// <summary>
+            /// Retrieves the sample info list at a point in time.
+            /// </summary>
+            /// <param name="time">The time to retrieve the sample info list from.</param>
+            /// <returns></returns>
+            private SampleInfoList sampleInfoListAt(double time)
+            {
+                var curveData = HitObject as IHasCurve;
+
+                if (curveData == null)
+                    return HitObject.Samples;
+
+                double segmentTime = (curveData.EndTime - HitObject.StartTime) / curveData.RepeatCount;
+
+                int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
+                return curveData.RepeatSamples[index];
+            }
         }
     }
 }

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

@@ -9,5 +9,29 @@ namespace osu.Game.Rulesets.Mania.Judgements
         /// Whether the hold note has been released too early and shouldn't give full score for the release.
         /// </summary>
         public bool HasBroken;
+
+        public override int NumericResultForScore(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return base.NumericResultForScore(result);
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return base.NumericResultForScore(HasBroken ? ManiaHitResult.Good : result);
+            }
+        }
+
+        public override int NumericResultForAccuracy(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return base.NumericResultForAccuracy(result);
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return base.NumericResultForAccuracy(HasBroken ? ManiaHitResult.Good : result);
+            }
+        }
     }
 }

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

@@ -5,5 +5,9 @@ namespace osu.Game.Rulesets.Mania.Judgements
 {
     public class HoldNoteTickJudgement : ManiaJudgement
     {
+        public override bool AffectsCombo => false;
+
+        public override int NumericResultForScore(ManiaHitResult result) => 20;
+        public override int NumericResultForAccuracy(ManiaHitResult result) => 0; // Don't count ticks into accuracy
     }
 }

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

@@ -2,11 +2,37 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.Judgements
 {
     public class ManiaJudgement : Judgement
     {
+        /// <summary>
+        /// The maximum possible hit result.
+        /// </summary>
+        public const ManiaHitResult MAX_HIT_RESULT = ManiaHitResult.Perfect;
+
+        /// <summary>
+        /// The result value for the combo portion of the score.
+        /// </summary>
+        public int ResultValueForScore => Result == HitResult.Miss ? 0 : NumericResultForScore(ManiaResult);
+
+        /// <summary>
+        /// The result value for the accuracy portion of the score.
+        /// </summary>
+        public int ResultValueForAccuracy => Result == HitResult.Miss ? 0 : NumericResultForAccuracy(ManiaResult);
+
+        /// <summary>
+        /// The maximum result value for the combo portion of the score.
+        /// </summary>
+        public int MaxResultValueForScore => NumericResultForScore(MAX_HIT_RESULT);
+
+        /// <summary>
+        /// The maximum result value for the accuracy portion of the score.
+        /// </summary>
+        public int MaxResultValueForAccuracy => NumericResultForAccuracy(MAX_HIT_RESULT);
+
         public override string ResultString => string.Empty;
 
         public override string MaxResultString => string.Empty;
@@ -15,5 +41,42 @@ namespace osu.Game.Rulesets.Mania.Judgements
         /// The hit result.
         /// </summary>
         public ManiaHitResult ManiaResult;
+
+        public virtual int NumericResultForScore(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case ManiaHitResult.Bad:
+                    return 50;
+                case ManiaHitResult.Ok:
+                    return 100;
+                case ManiaHitResult.Good:
+                    return 200;
+                case ManiaHitResult.Great:
+                case ManiaHitResult.Perfect:
+                    return 300;
+            }
+        }
+
+        public virtual int NumericResultForAccuracy(ManiaHitResult result)
+        {
+            switch (result)
+            {
+                default:
+                    return 0;
+                case ManiaHitResult.Bad:
+                    return 50;
+                case ManiaHitResult.Ok:
+                    return 100;
+                case ManiaHitResult.Good:
+                    return 200;
+                case ManiaHitResult.Great:
+                    return 300;
+                case ManiaHitResult.Perfect:
+                    return 305;
+            }
+        }
     }
 }

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

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

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

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

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

@@ -1,4 +1,4 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System.Collections.Generic;
@@ -58,6 +58,9 @@ namespace osu.Game.Rulesets.Mania.Objects
 
             TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
             tickSpacing = timingPoint.BeatLength / difficulty.SliderTickRate;
+
+            Head.ApplyDefaults(controlPointInfo, difficulty);
+            Tail.ApplyDefaults(controlPointInfo, difficulty);
         }
 
         /// <summary>

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

@@ -1,8 +1,13 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using System.Linq;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 
@@ -10,6 +15,143 @@ namespace osu.Game.Rulesets.Mania.Scoring
 {
     internal class ManiaScoreProcessor : ScoreProcessor<ManiaHitObject, ManiaJudgement>
     {
+        /// <summary>
+        /// The maximum score achievable.
+        /// Does _not_ include bonus score - for bonus score see <see cref="bonusScore"/>.
+        /// </summary>
+        private const int max_score = 1000000;
+
+        /// <summary>
+        /// The amount of the score attributed to combo.
+        /// </summary>
+        private const double combo_portion_max = max_score * 0.2;
+
+        /// <summary>
+        /// The amount of the score attributed to accuracy.
+        /// </summary>
+        private const double accuracy_portion_max = max_score * 0.8;
+
+        /// <summary>
+        /// The factor used to determine relevance of combos.
+        /// </summary>
+        private const double combo_base = 4;
+
+        /// <summary>
+        /// The combo value at which hit objects result in the max score possible.
+        /// </summary>
+        private const int combo_relevance_cap = 400;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_min = 0.75;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_mid = 0.85;
+
+        /// <summary>
+        /// The hit HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_max = 1;
+
+        /// <summary>
+        /// The default BAD hit HP increase.
+        /// </summary>
+        private const double hp_increase_bad = 0.005;
+
+        /// <summary>
+        /// The default OK hit HP increase.
+        /// </summary>
+        private const double hp_increase_ok = 0.010;
+
+        /// <summary>
+        /// The default GOOD hit HP increase.
+        /// </summary>
+        private const double hp_increase_good = 0.035;
+
+        /// <summary>
+        /// The default tick hit HP increase.
+        /// </summary>
+        private const double hp_increase_tick = 0.040;
+
+        /// <summary>
+        /// The default GREAT hit HP increase.
+        /// </summary>
+        private const double hp_increase_great = 0.055;
+
+        /// <summary>
+        /// The default PERFECT hit HP increase.
+        /// </summary>
+        private const double hp_increase_perfect = 0.065;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 0.
+        /// </summary>
+        private const double hp_multiplier_miss_min = 0.5;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 5.
+        /// </summary>
+        private const double hp_multiplier_miss_mid = 0.75;
+
+        /// <summary>
+        /// The MISS HP multiplier at OD = 10.
+        /// </summary>
+        private const double hp_multiplier_miss_max = 1;
+
+        /// <summary>
+        /// The default MISS HP increase.
+        /// </summary>
+        private const double hp_increase_miss = -0.125;
+
+        /// <summary>
+        /// The MISS HP multiplier. This is multiplied to the miss hp increase.
+        /// </summary>
+        private double hpMissMultiplier = 1;
+
+        /// <summary>
+        /// The HIT HP multiplier. This is multiplied to hit hp increases.
+        /// </summary>
+        private double hpMultiplier = 1;
+
+        /// <summary>
+        /// The cumulative combo portion of the score.
+        /// </summary>
+        private double comboScore => combo_portion_max * comboPortion / maxComboPortion;
+
+        /// <summary>
+        /// The cumulative accuracy portion of the score.
+        /// </summary>
+        private double accuracyScore => accuracy_portion_max * Math.Pow(Accuracy, 4) * totalHits / maxTotalHits;
+
+        /// <summary>
+        /// The cumulative bonus score.
+        /// This is added on top of <see cref="max_score"/>, thus the total score can exceed <see cref="max_score"/>.
+        /// </summary>
+        private double bonusScore;
+
+        /// <summary>
+        /// The <see cref="comboPortion"/> achieved by a perfect playthrough.
+        /// </summary>
+        private double maxComboPortion;
+
+        /// <summary>
+        /// The portion of the score dedicated to combo.
+        /// </summary>
+        private double comboPortion;
+
+        /// <summary>
+        /// The <see cref="totalHits"/> achieved by a perfect playthrough.
+        /// </summary>
+        private int maxTotalHits;
+
+        /// <summary>
+        /// The total hits.
+        /// </summary>
+        private int totalHits;
+
         public ManiaScoreProcessor()
         {
         }
@@ -19,8 +161,124 @@ namespace osu.Game.Rulesets.Mania.Scoring
         {
         }
 
+        protected override void ComputeTargets(Beatmap<ManiaHitObject> beatmap)
+        {
+            BeatmapDifficulty difficulty = beatmap.BeatmapInfo.Difficulty;
+            hpMultiplier = BeatmapDifficulty.DifficultyRange(difficulty.DrainRate, hp_multiplier_min, hp_multiplier_mid, hp_multiplier_max);
+            hpMissMultiplier = BeatmapDifficulty.DifficultyRange(difficulty.DrainRate, hp_multiplier_miss_min, hp_multiplier_miss_mid, hp_multiplier_miss_max);
+
+            while (true)
+            {
+                foreach (var obj in beatmap.HitObjects)
+                {
+                    var holdNote = obj as HoldNote;
+
+                    if (obj is Note)
+                    {
+                        AddJudgement(new ManiaJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaHitResult.Perfect
+                        });
+                    }
+                    else if (holdNote != null)
+                    {
+                        // Head
+                        AddJudgement(new ManiaJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaJudgement.MAX_HIT_RESULT
+                        });
+
+                        // Ticks
+                        int tickCount = holdNote.Ticks.Count();
+                        for (int i = 0; i < tickCount; i++)
+                        {
+                            AddJudgement(new HoldNoteTickJudgement
+                            {
+                                Result = HitResult.Hit,
+                                ManiaResult = ManiaJudgement.MAX_HIT_RESULT,
+                            });
+                        }
+
+                        AddJudgement(new HoldNoteTailJudgement
+                        {
+                            Result = HitResult.Hit,
+                            ManiaResult = ManiaJudgement.MAX_HIT_RESULT
+                        });
+                    }
+                }
+
+                if (!HasFailed)
+                    break;
+
+                hpMultiplier *= 1.01;
+                hpMissMultiplier *= 0.98;
+
+                Reset();
+            }
+
+            maxTotalHits = totalHits;
+            maxComboPortion = comboPortion;
+        }
+
         protected override void OnNewJudgement(ManiaJudgement judgement)
         {
+            bool isTick = judgement is HoldNoteTickJudgement;
+
+            if (!isTick)
+                totalHits++;
+
+            switch (judgement.Result)
+            {
+                case HitResult.Miss:
+                    Health.Value += hpMissMultiplier * hp_increase_miss;
+                    break;
+                case HitResult.Hit:
+                    if (isTick)
+                    {
+                        Health.Value += hpMultiplier * hp_increase_tick;
+                        bonusScore += judgement.ResultValueForScore;
+                    }
+                    else
+                    {
+                        switch (judgement.ManiaResult)
+                        {
+                            case ManiaHitResult.Bad:
+                                Health.Value += hpMultiplier * hp_increase_bad;
+                                break;
+                            case ManiaHitResult.Ok:
+                                Health.Value += hpMultiplier * hp_increase_ok;
+                                break;
+                            case ManiaHitResult.Good:
+                                Health.Value += hpMultiplier * hp_increase_good;
+                                break;
+                            case ManiaHitResult.Great:
+                                Health.Value += hpMultiplier * hp_increase_great;
+                                break;
+                            case ManiaHitResult.Perfect:
+                                Health.Value += hpMultiplier * hp_increase_perfect;
+                                break;
+                        }
+
+                        // A factor that is applied to make higher combos more relevant
+                        double comboRelevance = Math.Min(Math.Max(0.5, Math.Log(Combo.Value, combo_base)), Math.Log(combo_relevance_cap, combo_base));
+                        comboPortion += judgement.ResultValueForScore * comboRelevance;
+                    }
+                    break;
+            }
+
+            int scoreForAccuracy = 0;
+            int maxScoreForAccuracy = 0;
+
+            foreach (var j in Judgements)
+            {
+                scoreForAccuracy += j.ResultValueForAccuracy;
+                maxScoreForAccuracy += j.MaxResultValueForAccuracy;
+            }
+
+            Accuracy.Value = (double)scoreForAccuracy / maxScoreForAccuracy;
+            TotalScore.Value = comboScore + accuracyScore + bonusScore;
         }
 
         protected override void Reset()
@@ -28,6 +286,10 @@ namespace osu.Game.Rulesets.Mania.Scoring
             base.Reset();
 
             Health.Value = 1;
+
+            bonusScore = 0;
+            comboPortion = 0;
+            totalHits = 0;
         }
     }
 }

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

@@ -6,9 +6,11 @@ using System.Collections.Generic;
 using System.Linq;
 using OpenTK;
 using OpenTK.Input;
+using osu.Framework.Allocation;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Lists;
+using osu.Framework.MathUtils;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Beatmaps;
@@ -85,6 +87,34 @@ namespace osu.Game.Rulesets.Mania.UI
             };
         }
 
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            var maniaPlayfield = (ManiaPlayfield)Playfield;
+
+            double lastObjectTime = (Objects.LastOrDefault() as IHasEndTime)?.EndTime ?? Objects.LastOrDefault()?.StartTime ?? double.MaxValue;
+
+            SortedList<TimingControlPoint> timingPoints = Beatmap.ControlPointInfo.TimingPoints;
+            for (int i = 0; i < timingPoints.Count; i++)
+            {
+                TimingControlPoint point = timingPoints[i];
+
+                // Stop on the beat before the next timing point, or if there is no next timing point stop slightly past the last object
+                double endTime = i < timingPoints.Count - 1 ? timingPoints[i + 1].Time - point.BeatLength : lastObjectTime + point.BeatLength * (int)point.TimeSignature;
+
+                int index = 0;
+                for (double t = timingPoints[i].Time; Precision.DefinitelyBigger(endTime, t); t += point.BeatLength, index++)
+                {
+                    maniaPlayfield.Add(new DrawableBarLine(new BarLine
+                    {
+                        StartTime = t,
+                        ControlPoint = point,
+                        BeatIndex = index
+                    }));
+                }
+            }
+        }
+
         public override ScoreProcessor CreateScoreProcessor() => new ManiaScoreProcessor(this);
 
         protected override BeatmapConverter<ManiaHitObject> CreateBeatmapConverter() => new ManiaBeatmapConverter();

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

@@ -21,6 +21,7 @@ using osu.Game.Rulesets.Mania.Timing;
 using osu.Framework.Input;
 using osu.Framework.Graphics.Transforms;
 using osu.Framework.MathUtils;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -57,7 +58,7 @@ namespace osu.Game.Rulesets.Mania.UI
         private readonly FlowContainer<Column> columns;
         public IEnumerable<Column> Columns => columns.Children;
 
-        private readonly ControlPointContainer barlineContainer;
+        private readonly ControlPointContainer barLineContainer;
 
         private List<Color4> normalColumnColours = new List<Color4>();
         private Color4 specialColumnColour;
@@ -77,35 +78,51 @@ namespace osu.Game.Rulesets.Mania.UI
                 {
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre,
-                    RelativeSizeAxes = Axes.Y,
-                    AutoSizeAxes = Axes.X,
+                    RelativeSizeAxes = Axes.Both,
                     Masking = true,
                     Children = new Drawable[]
                     {
-                        new Box
+                        new Container
                         {
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black
-                        },
-                        columns = new FillFlowContainer<Column>
-                        {
-                            Name = "Columns",
+                            Name = "Masked elements",
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
                             RelativeSizeAxes = Axes.Y,
                             AutoSizeAxes = Axes.X,
-                            Direction = FillDirection.Horizontal,
-                            Padding = new MarginPadding { Left = 1, Right = 1 },
-                            Spacing = new Vector2(1, 0)
+                            Masking = true,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Colour = Color4.Black
+                                },
+                                columns = new FillFlowContainer<Column>
+                                {
+                                    Name = "Columns",
+                                    RelativeSizeAxes = Axes.Y,
+                                    AutoSizeAxes = Axes.X,
+                                    Direction = FillDirection.Horizontal,
+                                    Padding = new MarginPadding { Left = 1, Right = 1 },
+                                    Spacing = new Vector2(1, 0)
+                                }
+                            }
                         },
                         new Container
                         {
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
                             RelativeSizeAxes = Axes.Both,
                             Padding = new MarginPadding { Top = HIT_TARGET_POSITION },
                             Children = new[]
                             {
-                                barlineContainer = new ControlPointContainer(timingChanges)
+                                barLineContainer = new ControlPointContainer(timingChanges)
                                 {
                                     Name = "Bar lines",
-                                    RelativeSizeAxes = Axes.Both,
+                                    Anchor = Anchor.TopCentre,
+                                    Origin = Anchor.TopCentre,
+                                    RelativeSizeAxes = Axes.Y
+                                    // Width is set in the Update method
                                 }
                             }
                         }
@@ -190,6 +207,7 @@ namespace osu.Game.Rulesets.Mania.UI
         }
 
         public override void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> h) => Columns.ElementAt(h.HitObject.Column).Add(h);
+        public void Add(DrawableBarLine barline) => barLineContainer.Add(barline);
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
@@ -224,7 +242,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
                 timeSpan = MathHelper.Clamp(timeSpan, time_span_min, time_span_max);
 
-                barlineContainer.TimeSpan = value;
+                barLineContainer.TimeSpan = value;
                 Columns.ForEach(c => c.ControlPointContainer.TimeSpan = value);
             }
         }
@@ -234,6 +252,13 @@ namespace osu.Game.Rulesets.Mania.UI
             TransformTo(() => TimeSpan, newTimeSpan, duration, easing, new TransformTimeSpan());
         }
 
+        protected override void Update()
+        {
+            // Due to masking differences, it is not possible to get the width of the columns container automatically
+            // While masking on effectively only the Y-axis, so we need to set the width of the bar line container manually
+            barLineContainer.Width = columns.Width;
+        }
+
         private class TransformTimeSpan : Transform<double>
         {
             public override double CurrentValue

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

@@ -62,6 +62,7 @@
     <Compile Include="Judgements\ManiaHitResult.cs" />
     <Compile Include="Judgements\ManiaJudgement.cs" />
     <Compile Include="ManiaDifficultyCalculator.cs" />
+    <Compile Include="Objects\Drawables\DrawableBarLine.cs" />
     <Compile Include="Objects\Drawables\DrawableHoldNote.cs" />
     <Compile Include="Objects\Drawables\DrawableHoldNoteTick.cs" />
     <Compile Include="Objects\Drawables\DrawableManiaHitObject.cs" />
@@ -70,6 +71,7 @@
     <Compile Include="Objects\Drawables\Pieces\NotePiece.cs" />
     <Compile Include="Objects\Types\IHasColumn.cs" />
     <Compile Include="Scoring\ManiaScoreProcessor.cs" />
+    <Compile Include="Objects\BarLine.cs" />
     <Compile Include="Objects\HoldNote.cs" />
     <Compile Include="Objects\HoldNoteTick.cs" />
     <Compile Include="Objects\ManiaHitObject.cs" />

osu.Game/Graphics/Backgrounds/Triangles.cs

@@ -23,6 +23,13 @@ namespace osu.Game.Graphics.Backgrounds
     public class Triangles : Drawable
     {
         private const float triangle_size = 100;
+        private const float base_velocity = 50;
+
+        /// <summary>
+        /// How many screen-space pixels are smoothed over.
+        /// Same behavior as Sprite's EdgeSmoothness.
+        /// </summary>
+        private const float edge_smoothness = 1;
 
         public override bool HandleInput => false;
 
@@ -103,31 +110,34 @@ namespace osu.Game.Graphics.Backgrounds
 
             Invalidate(Invalidation.DrawNode, shallPropagate: false);
 
+            if (CreateNewTriangles)
+                addTriangles(false);
+
+            float adjustedAlpha = HideAlphaDiscrepancies ?
+                // Cubically scale alpha to make it drop off more sharply.
+                (float)Math.Pow(DrawInfo.Colour.AverageColour.Linear.A, 3) :
+                1;
+
+            float elapsedSeconds = (float)Time.Elapsed / 1000;
+            // Since position is relative, the velocity needs to scale inversely with DrawHeight.
+            // Since we will later multiply by the scale of individual triangles we normalize by
+            // dividing by triangleScale.
+            float movedDistance = -elapsedSeconds * Velocity * base_velocity / (DrawHeight * triangleScale);
+
             for (int i = 0; i < parts.Count; i++)
             {
                 TriangleParticle newParticle = parts[i];
 
-                float adjustedAlpha = HideAlphaDiscrepancies ?
-                    // Cubically scale alpha to make it drop off more sharply.
-                    (float)Math.Pow(DrawInfo.Colour.AverageColour.Linear.A, 3) :
-                    1;
-
-
-                newParticle.Position += new Vector2(0, -(parts[i].Scale * (50 / DrawHeight)) / triangleScale * Velocity) * ((float)Time.Elapsed / 950);
+                // Scale moved distance by the size of the triangle. Smaller triangles should move more slowly.
+                newParticle.Position.Y += parts[i].Scale * movedDistance;
                 newParticle.Colour.A = adjustedAlpha;
 
                 parts[i] = newParticle;
 
-                if (!CreateNewTriangles)
-                    continue;
-
                 float bottomPos = parts[i].Position.Y + triangle_size * parts[i].Scale * 0.866f / DrawHeight;
-
                 if (bottomPos < 0)
                     parts.RemoveAt(i);
             }
-
-            addTriangles(false);
         }
 
         private void addTriangles(bool randomY)
@@ -211,20 +221,28 @@ namespace osu.Game.Graphics.Backgrounds
                 Shader.Bind();
                 Texture.TextureGL.Bind();
 
+                Vector2 localInflationAmount = edge_smoothness * DrawInfo.MatrixInverse.ExtractScale().Xy;
+
                 foreach (TriangleParticle particle in Parts)
                 {
-                    var offset = new Vector2(particle.Scale * 0.5f, particle.Scale * 0.866f);
+                    var offset = triangle_size * new Vector2(particle.Scale * 0.5f, particle.Scale * 0.866f);
+                    var size = new Vector2(2 * offset.X, offset.Y);
 
                     var triangle = new Triangle(
                         particle.Position * Size * DrawInfo.Matrix,
-                        (particle.Position * Size + offset * triangle_size) * DrawInfo.Matrix,
-                        (particle.Position * Size + new Vector2(-offset.X, offset.Y) * triangle_size) * DrawInfo.Matrix
+                        (particle.Position * Size + offset) * DrawInfo.Matrix,
+                        (particle.Position * Size + new Vector2(-offset.X, offset.Y)) * DrawInfo.Matrix
                     );
 
                     ColourInfo colourInfo = DrawInfo.Colour;
                     colourInfo.ApplyChild(particle.Colour);
 
-                    Texture.DrawTriangle(triangle, colourInfo, null, Shared.VertexBatch.Add);
+                    Texture.DrawTriangle(
+                        triangle,
+                        colourInfo,
+                        null,
+                        Shared.VertexBatch.Add,
+                        Vector2.Divide(localInflationAmount, size));
                 }
 
                 Shader.Unbind();

osu.Game/Overlays/Chat/ChatTabControl.cs

@@ -14,6 +14,7 @@ using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Chat;
 using OpenTK;
 using OpenTK.Graphics;
+using osu.Framework.Configuration;
 
 namespace osu.Game.Overlays.Chat
 {
@@ -23,6 +24,8 @@ namespace osu.Game.Overlays.Chat
 
         private const float shear_width = 10;
 
+        public readonly Bindable<bool> ChannelSelectorActive = new Bindable<bool>();
+
         public ChatTabControl()
         {
             TabContainer.Margin = new MarginPadding { Left = 50 };
@@ -37,6 +40,8 @@ namespace osu.Game.Overlays.Chat
                 TextSize = 20,
                 Padding = new MarginPadding(10),
             });
+
+            AddTabItem(new ChannelTabItem.ChannelSelectorTabItem(new Channel { Name = "+" }, ChannelSelectorActive));
         }
 
         private class ChannelTabItem : TabItem<Channel>
@@ -49,6 +54,7 @@ namespace osu.Game.Overlays.Chat
             private readonly SpriteText textBold;
             private readonly Box box;
             private readonly Box highlightBox;
+            private readonly TextAwesome icon;
 
             public override bool Active
             {
@@ -114,6 +120,11 @@ namespace osu.Game.Overlays.Chat
                 backgroundHover = colours.Gray7;
 
                 highlightBox.Colour = colours.Yellow;
+            }
+
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
 
                 updateState();
             }
@@ -159,7 +170,7 @@ namespace osu.Game.Overlays.Chat
                         RelativeSizeAxes = Axes.Both,
                         Children = new Drawable[]
                         {
-                            new TextAwesome
+                            icon = new TextAwesome
                             {
                                 Icon = FontAwesome.fa_hashtag,
                                 Anchor = Anchor.CentreLeft,
@@ -191,6 +202,40 @@ namespace osu.Game.Overlays.Chat
                     }
                 };
             }
+
+            public class ChannelSelectorTabItem : ChannelTabItem
+            {
+                public override bool Active
+                {
+                    get { return base.Active; }
+                    set
+                    {
+                        activeBindable.Value = value;
+                        base.Active = value;
+                    }
+                }
+
+                private readonly Bindable<bool> activeBindable;
+
+                public ChannelSelectorTabItem(Channel value, Bindable<bool> active) : base(value)
+                {
+                    activeBindable = active;
+                    Depth = float.MaxValue;
+                    Width = 45;
+
+                    icon.Alpha = 0;
+
+                    text.TextSize = 45;
+                    textBold.TextSize = 45;
+                }
+
+                [BackgroundDependencyLoader]
+                private new void load(OsuColour colour)
+                {
+                    backgroundInactive = colour.Gray2;
+                    backgroundActive = colour.Gray3;
+                }
+            }
         }
     }
 }

osu.Game/Overlays/ChatOverlay.cs

@@ -260,6 +260,8 @@ namespace osu.Game.Overlays
             {
                 if (currentChannel == value) return;
 
+                if (channelTabs.ChannelSelectorActive) return;
+
                 if (currentChannel != null)
                     currentChannelContainer.Clear(false);
 

osu.Game/Overlays/Mods/ModButton.cs

@@ -27,6 +27,7 @@ namespace osu.Game.Overlays.Mods
     public class ModButton : ModButtonEmpty, IHasTooltip
     {
         private ModIcon foregroundIcon;
+        private ModIcon backgroundIcon;
         private readonly SpriteText text;
         private readonly Container<ModIcon> iconsContainer;
         private SampleChannel sampleOn, sampleOff;
@@ -35,38 +36,67 @@ namespace osu.Game.Overlays.Mods
 
         public string TooltipText => (SelectedMod?.Description ?? Mods.FirstOrDefault()?.Description) ?? string.Empty;
 
-        private int _selectedIndex = -1;
-        private int selectedIndex
+        private const EasingTypes mod_switch_easing = EasingTypes.InOutSine;
+        private const double mod_switch_duration = 120;
+
+        // A selected index of -1 means not selected.
+        private int selectedIndex = -1;
+
+        protected int SelectedIndex
         {
             get
             {
-                return _selectedIndex;
+                return selectedIndex;
             }
             set
             {
-                if (value == _selectedIndex) return;
-                _selectedIndex = value;
+                if (value == selectedIndex) return;
+
+                int direction = value < selectedIndex ? -1 : 1;
+                bool beforeSelected = Selected;
+
+                Mod modBefore = SelectedMod ?? Mods[0];
 
                 if (value >= Mods.Length)
+                    selectedIndex = -1;
+                else if (value < -1)
+                    selectedIndex = Mods.Length - 1;
+                else
+                    selectedIndex = value;
+
+                Mod modAfter = SelectedMod ?? Mods[0];
+
+                if (beforeSelected != Selected)
                 {
-                    _selectedIndex = -1;
-                }
-                else if (value <= -2)
-                {
-                    _selectedIndex = Mods.Length - 1;
+                    iconsContainer.RotateTo(Selected ? 5f : 0f, 300, EasingTypes.OutElastic);
+                    iconsContainer.ScaleTo(Selected ? 1.1f : 1f, 300, EasingTypes.OutElastic);
+                }
+
+                if (modBefore != modAfter)
+                {
+                    const float rotate_angle = 16;
+
+                    foregroundIcon.RotateTo(rotate_angle * direction, mod_switch_duration, mod_switch_easing);
+                    backgroundIcon.RotateTo(-rotate_angle * direction, mod_switch_duration, mod_switch_easing);
+
+                    backgroundIcon.Icon = modAfter.Icon;
+                    using (iconsContainer.BeginDelayedSequence(mod_switch_duration, true))
+                    {
+                        foregroundIcon.RotateTo(-rotate_angle * direction);
+                        foregroundIcon.RotateTo(0f, mod_switch_duration, mod_switch_easing);
+
+                        backgroundIcon.RotateTo(rotate_angle * direction);
+                        backgroundIcon.RotateTo(0f, mod_switch_duration, mod_switch_easing);
+
+                        iconsContainer.Schedule(() => displayMod(modAfter));
+                    }
                 }
 
-                iconsContainer.RotateTo(Selected ? 5f : 0f, 300, EasingTypes.OutElastic);
-                iconsContainer.ScaleTo(Selected ? 1.1f : 1f, 300, EasingTypes.OutElastic);
                 foregroundIcon.Highlighted = Selected;
-
-                if (mod != null)
-                    displayMod(SelectedMod ?? Mods[0]);
             }
         }
 
-        public bool Selected => selectedIndex != -1;
-
+        public bool Selected => SelectedIndex != -1;
 
         private Color4 selectedColour;
         public Color4 SelectedColour
@@ -117,7 +147,7 @@ namespace osu.Game.Overlays.Mods
 
         // the mods from Mod, only multiple if Mod is a MultiMod
 
-        public override Mod SelectedMod => Mods.ElementAtOrDefault(selectedIndex);
+        public override Mod SelectedMod => Mods.ElementAtOrDefault(SelectedIndex);
 
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
@@ -142,23 +172,25 @@ namespace osu.Game.Overlays.Mods
 
         public void SelectNext()
         {
-            (++selectedIndex == -1 ? sampleOff : sampleOn).Play();
+            (++SelectedIndex == -1 ? sampleOff : sampleOn).Play();
             Action?.Invoke(SelectedMod);
         }
 
         public void SelectPrevious()
         {
-            (--selectedIndex == -1 ? sampleOff : sampleOn).Play();
+            (--SelectedIndex == -1 ? sampleOff : sampleOn).Play();
             Action?.Invoke(SelectedMod);
         }
 
         public void Deselect()
         {
-            selectedIndex = -1;
+            SelectedIndex = -1;
         }
 
         private void displayMod(Mod mod)
         {
+            if (backgroundIcon != null)
+                backgroundIcon.Icon = foregroundIcon.Icon;
             foregroundIcon.Icon = mod.Icon;
             text.Text = mod.Name;
         }
@@ -170,17 +202,17 @@ namespace osu.Game.Overlays.Mods
             {
                 iconsContainer.Add(new[]
                 {
-                    new ModIcon(Mods[0])
+                    backgroundIcon = new ModIcon(Mods[1])
                     {
-                        Origin = Anchor.Centre,
-                        Anchor = Anchor.Centre,
+                        Origin = Anchor.BottomRight,
+                        Anchor = Anchor.BottomRight,
                         AutoSizeAxes = Axes.Both,
                         Position = new Vector2(1.5f),
                     },
                     foregroundIcon = new ModIcon(Mods[0])
                     {
-                        Origin = Anchor.Centre,
-                        Anchor = Anchor.Centre,
+                        Origin = Anchor.BottomRight,
+                        Anchor = Anchor.BottomRight,
                         AutoSizeAxes = Axes.Both,
                         Position = new Vector2(-1.5f),
                     },