Merge branch 'master' into more-diffcalc-attributes

.github/pull_request_template.md

@@ -0,0 +1,8 @@
+Add any details pertaining to developers above the break.
+
+- [ ] Depends on #PR
+- Closes #ISSUE
+
+---
+
+Add a sentence or two describing this change in plain english. This will be displayed on the [changelog](https://osu.ppy.sh/home/changelog). A single screenshot or short gif is also welcomed.

osu.Desktop.Deploy/.vscode/launch.json

@@ -1,29 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [{
-            "name": "Deploy (Debug)",
-            "request": "launch",
-            "type": "mono",
-            "program": "${workspaceRoot}/bin/Debug/net471/osu.Desktop.Deploy.exe",
-            "cwd": "${workspaceRoot}",
-            "preLaunchTask": "Build (Debug)",
-            "runtimeExecutable": null,
-            "env": {},
-            "console": "internalConsole"
-        },
-        {
-            "name": "Deploy (Release)",
-            "request": "launch",
-            "type": "clr",
-            "program": "${workspaceRoot}/bin/Release/net471/osu.Desktop.Deploy.exe",
-            "cwd": "${workspaceRoot}",
-            "preLaunchTask": "Build (Release)",
-            "runtimeExecutable": null,
-            "env": {},
-            "console": "internalConsole"
-        }
-    ]
-}

osu.Desktop.Deploy/.vscode/tasks.json

@@ -1,64 +0,0 @@
-{
-    // See https://go.microsoft.com/fwlink/?LinkId=733558
-    // for the documentation about the tasks.json format
-    "version": "2.0.0",
-    "command": "msbuild",
-    "type": "shell",
-    "suppressTaskName": true,
-    "args": [
-        "/property:GenerateFullPaths=true",
-        "/property:DebugType=portable",
-        "/verbosity:minimal",
-        "/m" //parallel compiling support.
-    ],
-    "tasks": [{
-            "taskName": "Build (Debug)",
-            "group": {
-                "kind": "build",
-                "isDefault": true
-            },
-            "problemMatcher": [
-                "$msCompile"
-            ]
-        },
-        {
-            "taskName": "Build (Release)",
-            "group": "build",
-            "args": [
-                "/property:Configuration=Release"
-            ],
-            "problemMatcher": [
-                "$msCompile"
-            ]
-        },
-        {
-            "taskName": "Clean (Debug)",
-            "args": [
-                "/target:Clean"
-            ],
-            "problemMatcher": [
-                "$msCompile"
-            ]
-        },
-        {
-            "taskName": "Clean (Release)",
-            "args": [
-                "/target:Clean",
-                "/property:Configuration=Release"
-            ],
-            "problemMatcher": [
-                "$msCompile"
-            ]
-        },
-        {
-            "taskName": "Clean All",
-            "dependsOn": [
-                "Clean (Debug)",
-                "Clean (Release)"
-            ],
-            "problemMatcher": [
-                "$msCompile"
-            ]
-        }
-    ]
-}

osu.Desktop/OsuGameDesktop.cs

@@ -73,7 +73,7 @@ namespace osu.Desktop
             }
 
             public StableStorage()
-                : base(string.Empty)
+                : base(string.Empty, null)
             {
             }
         }

osu.Desktop/osu.Desktop.csproj

@@ -30,6 +30,7 @@
   </ItemGroup>
   <ItemGroup Label="Package References">
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.1.1" />
     <PackageReference Include="squirrel.windows" Version="1.8.0" Condition="'$(TargetFramework)' == 'net471'" />
   </ItemGroup>
   <ItemGroup Label="Resources">

osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyAttributes.cs

@@ -0,0 +1,19 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Difficulty;
+using osu.Game.Rulesets.Mods;
+
+namespace osu.Game.Rulesets.Catch.Difficulty
+{
+    public class CatchDifficultyAttributes : DifficultyAttributes
+    {
+        public double ApproachRate;
+        public int MaxCombo;
+
+        public CatchDifficultyAttributes(Mod[] mods, double starRating)
+            : base(mods, starRating)
+        {
+        }
+    }
+}

osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyCalculator.cs

@@ -1,19 +1,146 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
 
 namespace osu.Game.Rulesets.Catch.Difficulty
 {
     public class CatchDifficultyCalculator : DifficultyCalculator
     {
+
+        /// <summary>
+        /// In milliseconds. For difficulty calculation we will only look at the highest strain value in each time interval of size STRAIN_STEP.
+        /// This is to eliminate higher influence of stream over aim by simply having more HitObjects with high strain.
+        /// The higher this value, the less strains there will be, indirectly giving long beatmaps an advantage.
+        /// </summary>
+        private const double strain_step = 750;
+
+        /// <summary>
+        /// The weighting of each strain value decays to this number * it's previous value
+        /// </summary>
+        private const double decay_weight = 0.94;
+
+        private const double star_scaling_factor = 0.145;
+
         public CatchDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
             : base(ruleset, beatmap)
         {
         }
 
-        protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods, double timeRate) => new DifficultyAttributes(mods, 0);
+        protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods, double timeRate)
+        {
+            if (!beatmap.HitObjects.Any())
+                return new CatchDifficultyAttributes(mods, 0);
+
+            var catcher = new CatcherArea.Catcher(beatmap.BeatmapInfo.BaseDifficulty);
+            float halfCatchWidth = catcher.CatchWidth * 0.5f;
+
+            var difficultyHitObjects = new List<CatchDifficultyHitObject>();
+
+            foreach (var hitObject in beatmap.HitObjects)
+            {
+                // We want to only consider fruits that contribute to the combo. Droplets are addressed as accuracy and spinners are not relevant for "skill" calculations.
+                if (hitObject is Fruit)
+                {
+                    difficultyHitObjects.Add(new CatchDifficultyHitObject((CatchHitObject)hitObject, halfCatchWidth));
+                }
+                if (hitObject is JuiceStream)
+                    difficultyHitObjects.AddRange(hitObject.NestedHitObjects.OfType<CatchHitObject>().Where(o => !(o is TinyDroplet)).Select(o => new CatchDifficultyHitObject(o, halfCatchWidth)));
+            }
+
+            difficultyHitObjects.Sort((a, b) => a.BaseHitObject.StartTime.CompareTo(b.BaseHitObject.StartTime));
+
+            if (!calculateStrainValues(difficultyHitObjects, timeRate))
+                return new CatchDifficultyAttributes(mods, 0);
+
+            // this is the same as osu!, so there's potential to share the implementation... maybe
+            double preEmpt = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
+            double starRating = Math.Sqrt(calculateDifficulty(difficultyHitObjects, timeRate)) * star_scaling_factor;
+
+            return new CatchDifficultyAttributes(mods, starRating)
+            {
+                ApproachRate = preEmpt > 1200.0 ? -(preEmpt - 1800.0) / 120.0 : -(preEmpt - 1200.0) / 150.0 + 5.0,
+                MaxCombo = difficultyHitObjects.Count
+            };
+        }
+
+        private bool calculateStrainValues(List<CatchDifficultyHitObject> objects, double timeRate)
+        {
+            CatchDifficultyHitObject lastObject = null;
+
+            if (!objects.Any()) return false;
+
+            // Traverse hitObjects in pairs to calculate the strain value of NextHitObject from the strain value of CurrentHitObject and environment.
+            foreach (var currentObject in objects)
+            {
+                if (lastObject != null)
+                    currentObject.CalculateStrains(lastObject, timeRate);
+
+                lastObject = currentObject;
+            }
+
+            return true;
+        }
+
+        private double calculateDifficulty(List<CatchDifficultyHitObject> objects, double timeRate)
+        {
+            // The strain step needs to be adjusted for the algorithm to be considered equal with speed changing mods
+            double actualStrainStep = strain_step * timeRate;
+
+            // Find the highest strain value within each strain step
+            var highestStrains = new List<double>();
+            double intervalEndTime = actualStrainStep;
+            double maximumStrain = 0; // We need to keep track of the maximum strain in the current interval
+
+            CatchDifficultyHitObject previousHitObject = null;
+            foreach (CatchDifficultyHitObject hitObject in objects)
+            {
+                // While we are beyond the current interval push the currently available maximum to our strain list
+                while (hitObject.BaseHitObject.StartTime > intervalEndTime)
+                {
+                    highestStrains.Add(maximumStrain);
+
+                    // The maximum strain of the next interval is not zero by default! We need to take the last hitObject we encountered, take its strain and apply the decay
+                    // until the beginning of the next interval.
+                    if (previousHitObject == null)
+                    {
+                        maximumStrain = 0;
+                    }
+                    else
+                    {
+                        double decay = Math.Pow(CatchDifficultyHitObject.DECAY_BASE, (intervalEndTime - previousHitObject.BaseHitObject.StartTime) / 1000);
+                        maximumStrain = previousHitObject.Strain * decay;
+                    }
+
+                    // Go to the next time interval
+                    intervalEndTime += actualStrainStep;
+                }
+
+                // Obtain maximum strain
+                maximumStrain = Math.Max(hitObject.Strain, maximumStrain);
+
+                previousHitObject = hitObject;
+            }
+
+            // Build the weighted sum over the highest strains for each interval
+            double difficulty = 0;
+            double weight = 1;
+            highestStrains.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
+
+            foreach (double strain in highestStrains)
+            {
+                difficulty += weight * strain;
+                weight *= decay_weight;
+            }
+
+            return difficulty;
+        }
     }
 }

osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyHitObject.cs

@@ -0,0 +1,130 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using OpenTK;
+
+namespace osu.Game.Rulesets.Catch.Difficulty
+{
+    public class CatchDifficultyHitObject
+    {
+        internal static readonly double DECAY_BASE = 0.20;
+        private const float normalized_hitobject_radius = 41.0f;
+        private const float absolute_player_positioning_error = 16f;
+        private readonly float playerPositioningError;
+
+        internal CatchHitObject BaseHitObject;
+
+        /// <summary>
+        /// Measures jump difficulty. CtB doesn't have something like button pressing speed or accuracy
+        /// </summary>
+        internal double Strain = 1;
+
+        /// <summary>
+        /// This is required to keep track of lazy player movement (always moving only as far as necessary)
+        /// Without this quick repeat sliders / weirdly shaped streams might become ridiculously overrated
+        /// </summary>
+        internal float PlayerPositionOffset;
+        internal float LastMovement;
+
+        internal float NormalizedPosition;
+        internal float ActualNormalizedPosition => NormalizedPosition + PlayerPositionOffset;
+
+        internal CatchDifficultyHitObject(CatchHitObject baseHitObject, float catcherWidthHalf)
+        {
+            BaseHitObject = baseHitObject;
+
+            // We will scale everything by this factor, so we can assume a uniform CircleSize among beatmaps.
+            float scalingFactor = normalized_hitobject_radius / catcherWidthHalf;
+
+            playerPositioningError = absolute_player_positioning_error; // * scalingFactor;
+            NormalizedPosition = baseHitObject.X * CatchPlayfield.BASE_WIDTH * scalingFactor;
+        }
+
+        private const double direction_change_bonus = 12.5;
+        internal void CalculateStrains(CatchDifficultyHitObject previousHitObject, double timeRate)
+        {
+            // Rather simple, but more specialized things are inherently inaccurate due to the big difference playstyles and opinions make.
+            // See Taiko feedback thread.
+            double timeElapsed = (BaseHitObject.StartTime - previousHitObject.BaseHitObject.StartTime) / timeRate;
+            double decay = Math.Pow(DECAY_BASE, timeElapsed / 1000);
+
+            // Update new position with lazy movement.
+            PlayerPositionOffset =
+                MathHelper.Clamp(
+                    previousHitObject.ActualNormalizedPosition,
+                    NormalizedPosition - (normalized_hitobject_radius - playerPositioningError),
+                    NormalizedPosition + (normalized_hitobject_radius - playerPositioningError)) // Obtain new lazy position, but be stricter by allowing for an error of a certain degree of the player.
+                - NormalizedPosition; // Subtract HitObject position to obtain offset
+
+            LastMovement = DistanceTo(previousHitObject);
+            double addition = spacingWeight(LastMovement);
+
+            if (NormalizedPosition < previousHitObject.NormalizedPosition)
+            {
+                LastMovement = -LastMovement;
+            }
+
+            CatchHitObject previousHitCircle = previousHitObject.BaseHitObject;
+
+            double additionBonus = 0;
+            double sqrtTime = Math.Sqrt(Math.Max(timeElapsed, 25));
+
+            // Direction changes give an extra point!
+            if (Math.Abs(LastMovement) > 0.1)
+            {
+                if (Math.Abs(previousHitObject.LastMovement) > 0.1 && Math.Sign(LastMovement) != Math.Sign(previousHitObject.LastMovement))
+                {
+                    double bonus = direction_change_bonus / sqrtTime;
+
+                    // Weight bonus by how
+                    double bonusFactor = Math.Min(playerPositioningError, Math.Abs(LastMovement)) / playerPositioningError;
+
+                    // We want time to play a role twice here!
+                    addition += bonus * bonusFactor;
+
+                    // Bonus for tougher direction switches and "almost" hyperdashes at this point
+                    if (previousHitCircle != null && previousHitCircle.DistanceToHyperDash <= 10.0f / CatchPlayfield.BASE_WIDTH)
+                    {
+                        additionBonus += 0.3 * bonusFactor;
+                    }
+                }
+
+                // Base bonus for every movement, giving some weight to streams.
+                addition += 7.5 * Math.Min(Math.Abs(LastMovement), normalized_hitobject_radius * 2) / (normalized_hitobject_radius * 6) / sqrtTime;
+            }
+
+            // Bonus for "almost" hyperdashes at corner points
+            if (previousHitCircle != null && previousHitCircle.DistanceToHyperDash <= 10.0f / CatchPlayfield.BASE_WIDTH)
+            {
+                if (!previousHitCircle.HyperDash)
+                {
+                    additionBonus += 1.0;
+                }
+                else
+                {
+                    // After a hyperdash we ARE in the correct position. Always!
+                    PlayerPositionOffset = 0;
+                }
+
+                addition *= 1.0 + additionBonus * ((10 - previousHitCircle.DistanceToHyperDash * CatchPlayfield.BASE_WIDTH) / 10);
+            }
+
+            addition *= 850.0 / Math.Max(timeElapsed, 25);
+
+            Strain = previousHitObject.Strain * decay + addition;
+        }
+
+        private static double spacingWeight(float distance)
+        {
+            return Math.Pow(distance, 1.3) / 500;
+        }
+
+        internal float DistanceTo(CatchDifficultyHitObject other)
+        {
+            return Math.Abs(ActualNormalizedPosition - other.ActualNormalizedPosition);
+        }
+    }
+}

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

@@ -24,6 +24,11 @@ namespace osu.Game.Rulesets.Catch.Objects
 
         public int ComboIndex { get; set; }
 
+        /// <summary>
+        /// The distance for a fruit to to next hyper if it's not a hyper.
+        /// </summary>
+        public float DistanceToHyperDash { get; set; }
+
         /// <summary>
         /// The next fruit starts a new combo. Used for explodey.
         /// </summary>

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

@@ -28,9 +28,9 @@ namespace osu.Game.Rulesets.Catch.Replays
             }
         }
 
-        public override List<InputState> GetPendingStates()
+        public override List<IInput> GetPendingInputs()
         {
-            if (!Position.HasValue) return new List<InputState>();
+            if (!Position.HasValue) return new List<IInput>();
 
             var actions = new List<CatchAction>();
 
@@ -42,7 +42,7 @@ namespace osu.Game.Rulesets.Catch.Replays
             else if (Position.Value < CurrentFrame.Position)
                 actions.Add(CatchAction.MoveLeft);
 
-            return new List<InputState>
+            return new List<IInput>
             {
                 new CatchReplayState
                 {

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

@@ -16,6 +16,7 @@ using osu.Game.Rulesets.Catch.Objects.Drawable;
 using osu.Game.Rulesets.Catch.Replays;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
 using OpenTK;
 using OpenTK.Graphics;
 
@@ -93,7 +94,7 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             base.UpdateAfterChildren();
 
-            var state = GetContainingInputManager().CurrentState as CatchFramedReplayInputHandler.CatchReplayState;
+            var state = (GetContainingInputManager().CurrentState as RulesetInputManagerInputState<CatchAction>)?.LastReplayState as CatchFramedReplayInputHandler.CatchReplayState;
 
             if (state?.CatcherX != null)
                 MovableCatcher.X = state.CatcherX.Value;
@@ -105,6 +106,11 @@ namespace osu.Game.Rulesets.Catch.UI
 
         public class Catcher : Container, IKeyBindingHandler<CatchAction>
         {
+            /// <summary>
+            /// Width of the area that can be used to attempt catches during gameplay.
+            /// </summary>
+            internal float CatchWidth => CATCHER_SIZE * Math.Abs(Scale.X);
+
             private Container<DrawableHitObject> caughtFruit;
 
             public Container ExplodingFruitTarget;
@@ -232,15 +238,15 @@ namespace osu.Game.Rulesets.Catch.UI
             /// <returns>Whether the catch is possible.</returns>
             public bool AttemptCatch(CatchHitObject fruit)
             {
-                double halfCatcherWidth = CATCHER_SIZE * Math.Abs(Scale.X) * 0.5f;
+                float halfCatchWidth = CatchWidth * 0.5f;
 
                 // this stuff wil disappear once we move fruit to non-relative coordinate space in the future.
                 var catchObjectPosition = fruit.X * CatchPlayfield.BASE_WIDTH;
                 var catcherPosition = Position.X * CatchPlayfield.BASE_WIDTH;
 
                 var validCatch =
-                    catchObjectPosition >= catcherPosition - halfCatcherWidth &&
+                    catchObjectPosition >= catcherPosition - halfCatchWidth &&
-                    catchObjectPosition <= catcherPosition + halfCatcherWidth;
+                    catchObjectPosition <= catcherPosition + halfCatchWidth;
 
                 if (validCatch && fruit.HyperDash)
                 {

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

@@ -0,0 +1,45 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Input.Bindings;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    public abstract class ManiaInputTestCase : OsuTestCase
+    {
+        private readonly Container<Drawable> content;
+        protected override Container<Drawable> Content => content ?? base.Content;
+
+        protected ManiaInputTestCase(int keys)
+        {
+            base.Content.Add(content = new LocalInputManager(keys));
+        }
+
+        private class LocalInputManager : ManiaInputManager
+        {
+            public LocalInputManager(int variant)
+                : base(new ManiaRuleset().RulesetInfo, variant)
+            {
+            }
+
+            protected override RulesetKeyBindingContainer CreateKeyBindingContainer(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
+                => new LocalKeyBindingContainer(ruleset, variant, unique);
+
+            private class LocalKeyBindingContainer : RulesetKeyBindingContainer
+            {
+                public LocalKeyBindingContainer(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
+                    : base(ruleset, variant, unique)
+                {
+                }
+
+                protected override void ReloadMappings()
+                {
+                    KeyBindings = DefaultKeyBindings;
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,37 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    /// <summary>
+    /// A container which provides a <see cref="IScrollingInfo"/> to children.
+    /// </summary>
+    public class ScrollingTestContainer : Container
+    {
+        private readonly ScrollingDirection direction;
+
+        public ScrollingTestContainer(ScrollingDirection direction)
+        {
+            this.direction = direction;
+        }
+
+        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        {
+            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies.CacheAs<IScrollingInfo>(new ScrollingInfo { Direction = { Value = direction }});
+            return dependencies;
+        }
+
+        private class ScrollingInfo : IScrollingInfo
+        {
+            public readonly Bindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
+            IBindable<ScrollingDirection> IScrollingInfo.Direction => Direction;
+        }
+    }
+}

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

@@ -0,0 +1,111 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Mania.UI.Components;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class TestCaseColumn : ManiaInputTestCase
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(Column),
+            typeof(ColumnBackground),
+            typeof(ColumnKeyArea),
+            typeof(ColumnHitObjectArea)
+        };
+
+        private readonly List<Column> columns = new List<Column>();
+
+        public TestCaseColumn()
+            : base(2)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Child = new FillFlowContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Spacing = new Vector2(20, 0),
+                Children = new[]
+                {
+                    createColumn(ScrollingDirection.Up, ManiaAction.Key1),
+                    createColumn(ScrollingDirection.Down, ManiaAction.Key2)
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            AddStep("note", createNote);
+            AddStep("hold note", createHoldNote);
+        }
+
+        private void createNote()
+        {
+            for (int i = 0; i < columns.Count; i++)
+            {
+                var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
+                obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                columns[i].Add(new DrawableNote(obj, columns[i].Action));
+            }
+        }
+
+        private void createHoldNote()
+        {
+            for (int i = 0; i < columns.Count; i++)
+            {
+                var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
+                obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                columns[i].Add(new DrawableHoldNote(obj, columns[i].Action));
+            }
+        }
+
+        private Drawable createColumn(ScrollingDirection direction, ManiaAction action)
+        {
+            var column = new Column(direction)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Height = 0.85f,
+                AccentColour = Color4.OrangeRed,
+                Action = action,
+                VisibleTimeRange = { Value = 2000 }
+            };
+
+            columns.Add(column);
+
+            return new ScrollingTestContainer(direction)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                AutoSizeAxes = Axes.X,
+                RelativeSizeAxes = Axes.Y,
+                Child = column
+            };
+        }
+    }
+}

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

@@ -1,106 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using NUnit.Framework;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Game.Beatmaps;
-using osu.Game.Beatmaps.ControlPoints;
-using osu.Game.Rulesets.Mania.Objects;
-using osu.Game.Rulesets.Mania.Objects.Drawables;
-using osu.Game.Tests.Visual;
-using OpenTK;
-using OpenTK.Graphics;
-
-namespace osu.Game.Rulesets.Mania.Tests
-{
-    [TestFixture]
-    public class TestCaseManiaHitObjects : OsuTestCase
-    {
-        public TestCaseManiaHitObjects()
-        {
-            Note note1 = new Note();
-            Note note2 = new Note();
-            HoldNote holdNote = new HoldNote { StartTime = 1000 };
-
-            note1.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-            note2.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-            holdNote.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-            Add(new FillFlowContainer
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                RelativeSizeAxes = Axes.Y,
-                Direction = FillDirection.Horizontal,
-                Spacing = new Vector2(10, 0),
-                // Imagine that the containers containing the drawable notes are the "columns"
-                Children = new Drawable[]
-                {
-                    new Container
-                    {
-                        Name = "Normal note column",
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
-                        RelativeSizeAxes = Axes.Y,
-                        Width = 50,
-                        Children = new[]
-                        {
-                            new Container
-                            {
-                                Name = "Timing section",
-                                RelativeSizeAxes = Axes.Both,
-                                RelativeChildSize = new Vector2(1, 10000),
-                                Children = new[]
-                                {
-                                    new DrawableNote(note1, ManiaAction.Key1)
-                                    {
-                                        Y = 5000,
-                                        LifetimeStart = double.MinValue,
-                                        LifetimeEnd = double.MaxValue,
-                                        AccentColour = Color4.Red
-                                    },
-                                    new DrawableNote(note2, ManiaAction.Key1)
-                                    {
-                                        Y = 6000,
-                                        LifetimeStart = double.MinValue,
-                                        LifetimeEnd = double.MaxValue,
-                                        AccentColour = Color4.Red
-                                    }
-                                }
-                            }
-                        }
-                    },
-                    new Container
-                    {
-                        Name = "Hold note column",
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
-                        RelativeSizeAxes = Axes.Y,
-                        Width = 50,
-                        Children = new[]
-                        {
-                            new Container
-                            {
-                                Name = "Timing section",
-                                RelativeSizeAxes = Axes.Both,
-                                RelativeChildSize = new Vector2(1, 10000),
-                                Children = new[]
-                                {
-                                    new DrawableHoldNote(holdNote, ManiaAction.Key1)
-                                    {
-                                        Y = 5000,
-                                        Height = 1000,
-                                        LifetimeStart = double.MinValue,
-                                        LifetimeEnd = double.MaxValue,
-                                        AccentColour = Color4.Red,
-                                    }
-                                }
-                            }
-                        }
-                    }
-                }
-            });
-        }
-    }
-}

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

@@ -1,185 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using NUnit.Framework;
-using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Timing;
-using osu.Game.Beatmaps;
-using osu.Game.Beatmaps.ControlPoints;
-using osu.Game.Configuration;
-using osu.Game.Rulesets.Mania.Beatmaps;
-using osu.Game.Rulesets.Mania.Configuration;
-using osu.Game.Rulesets.Mania.Judgements;
-using osu.Game.Rulesets.Mania.Objects;
-using osu.Game.Rulesets.Mania.Objects.Drawables;
-using osu.Game.Rulesets.Mania.UI;
-using osu.Game.Rulesets.Scoring;
-using osu.Game.Tests.Visual;
-
-namespace osu.Game.Rulesets.Mania.Tests
-{
-    [TestFixture]
-    public class TestCaseManiaPlayfield : OsuTestCase
-    {
-        private const double start_time = 500;
-        private const double duration = 500;
-
-        protected override double TimePerAction => 200;
-
-        private RulesetInfo maniaRuleset;
-
-        public TestCaseManiaPlayfield()
-        {
-            var rng = new Random(1337);
-
-            AddStep("1 column", () => createPlayfield(1));
-            AddStep("4 columns", () => createPlayfield(4));
-            AddStep("5 columns", () => createPlayfield(5));
-            AddStep("8 columns", () => createPlayfield(8));
-            AddStep("4 + 4 columns", () =>
-            {
-                var stages = new List<StageDefinition>
-                {
-                    new StageDefinition { Columns = 4 },
-                    new StageDefinition { Columns = 4 },
-                };
-                createPlayfield(stages);
-            });
-
-            AddStep("2 + 4 + 2 columns", () =>
-            {
-                var stages = new List<StageDefinition>
-                {
-                    new StageDefinition { Columns = 2 },
-                    new StageDefinition { Columns = 4 },
-                    new StageDefinition { Columns = 2 },
-                };
-                createPlayfield(stages);
-            });
-
-            AddStep("1 + 8 + 1 columns", () =>
-            {
-                var stages = new List<StageDefinition>
-                {
-                    new StageDefinition { Columns = 1 },
-                    new StageDefinition { Columns = 8 },
-                    new StageDefinition { Columns = 1 },
-                };
-                createPlayfield(stages);
-            });
-
-            AddStep("Reversed", () => createPlayfield(4, true));
-
-            AddStep("Notes with input", () => createPlayfieldWithNotes());
-            AddStep("Notes with input (reversed)", () => createPlayfieldWithNotes(true));
-            AddStep("Notes with gravity", () => createPlayfieldWithNotes());
-            AddStep("Notes with gravity (reversed)", () => createPlayfieldWithNotes(true));
-
-            AddStep("Hit explosion", () =>
-            {
-                var playfield = createPlayfield(4);
-
-                int col = rng.Next(0, 4);
-
-                var note = new Note { Column = col };
-                note.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-                var drawableNote = new DrawableNote(note, ManiaAction.Key1)
-                {
-                    AccentColour = playfield.Columns.ElementAt(col).AccentColour
-                };
-
-                playfield.OnJudgement(drawableNote, new ManiaJudgement { Result = HitResult.Perfect });
-                playfield.Columns[col].OnJudgement(drawableNote, new ManiaJudgement { Result = HitResult.Perfect });
-            });
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(RulesetStore rulesets, SettingsStore settings)
-        {
-            maniaRuleset = rulesets.GetRuleset(3);
-
-            Dependencies.Cache(new ManiaConfigManager(settings, maniaRuleset, 4));
-        }
-
-        private ManiaPlayfield createPlayfield(int cols, bool inverted = false)
-        {
-            var stages = new List<StageDefinition>
-            {
-                new StageDefinition { Columns = cols },
-            };
-
-            return createPlayfield(stages, inverted);
-        }
-
-        private ManiaPlayfield createPlayfield(List<StageDefinition> stages, bool inverted = false)
-        {
-            Clear();
-
-            var inputManager = new ManiaInputManager(maniaRuleset, stages.Sum(g => g.Columns)) { RelativeSizeAxes = Axes.Both };
-            Add(inputManager);
-
-            ManiaPlayfield playfield;
-
-            inputManager.Add(playfield = new ManiaPlayfield(stages)
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-            });
-
-            playfield.Inverted.Value = inverted;
-
-            return playfield;
-        }
-
-        private void createPlayfieldWithNotes(bool inverted = false)
-        {
-            Clear();
-
-            var rateAdjustClock = new StopwatchClock(true) { Rate = 1 };
-
-            var inputManager = new ManiaInputManager(maniaRuleset, 4) { RelativeSizeAxes = Axes.Both };
-            Add(inputManager);
-
-            ManiaPlayfield playfield;
-            var stages = new List<StageDefinition>
-            {
-                new StageDefinition { Columns = 4 },
-            };
-
-            inputManager.Add(playfield = new ManiaPlayfield(stages)
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                Clock = new FramedClock(rateAdjustClock)
-            });
-
-            playfield.Inverted.Value = inverted;
-
-            for (double t = start_time; t <= start_time + duration; t += 100)
-            {
-                var note1 = new Note { StartTime = t, Column = 0 };
-                var note2 = new Note { StartTime = t, Column = 3 };
-
-                note1.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-                note2.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-                playfield.Add(new DrawableNote(note1, ManiaAction.Key1));
-                playfield.Add(new DrawableNote(note2, ManiaAction.Key4));
-            }
-
-            var holdNote1 = new HoldNote { StartTime = start_time, Duration = duration, Column = 1 };
-            var holdNote2 = new HoldNote { StartTime = start_time, Duration = duration, Column = 2 };
-
-            holdNote1.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-            holdNote2.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-            playfield.Add(new DrawableHoldNote(holdNote1, ManiaAction.Key2));
-            playfield.Add(new DrawableHoldNote(holdNote2, ManiaAction.Key3));
-        }
-    }
-}

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

@@ -0,0 +1,168 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class TestCaseNotes : OsuTestCase
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(DrawableNote),
+            typeof(DrawableHoldNote)
+        };
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Child = new FillFlowContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                AutoSizeAxes = Axes.Both,
+                Direction = FillDirection.Horizontal,
+                Spacing = new Vector2(20),
+                Children = new[]
+                {
+                    createNoteDisplay(ScrollingDirection.Down),
+                    createNoteDisplay(ScrollingDirection.Up),
+                    createHoldNoteDisplay(ScrollingDirection.Down),
+                    createHoldNoteDisplay(ScrollingDirection.Up),
+                }
+            };
+        }
+
+        private Drawable createNoteDisplay(ScrollingDirection direction)
+        {
+            var note = new Note { StartTime = 999999999 };
+            note.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+            return new ScrollingTestContainer(direction)
+            {
+                AutoSizeAxes = Axes.Both,
+                Child = new NoteContainer(direction, $"note, scrolling {direction.ToString().ToLower()}")
+                {
+                    Child = new DrawableNote(note, ManiaAction.Key1) { AccentColour = Color4.OrangeRed }
+                }
+            };
+        }
+
+        private Drawable createHoldNoteDisplay(ScrollingDirection direction)
+        {
+            var note = new HoldNote { StartTime = 999999999, Duration = 1000 };
+            note.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+            return new ScrollingTestContainer(direction)
+            {
+                AutoSizeAxes = Axes.Both,
+                Child = new NoteContainer(direction, $"hold note, scrolling {direction.ToString().ToLower()}")
+                {
+                    Child = new DrawableHoldNote(note, ManiaAction.Key1)
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        AccentColour = Color4.OrangeRed,
+                    }
+                }
+            };
+        }
+
+        private class NoteContainer : Container
+        {
+            private readonly Container content;
+            protected override Container<Drawable> Content => content;
+
+            private readonly ScrollingDirection direction;
+
+            public NoteContainer(ScrollingDirection direction, string description)
+            {
+                this.direction = direction;
+                AutoSizeAxes = Axes.Both;
+
+                InternalChild = new FillFlowContainer
+                {
+                    AutoSizeAxes = Axes.Both,
+                    Spacing = new Vector2(0, 10),
+                    Direction = FillDirection.Vertical,
+                    Children = new Drawable[]
+                    {
+                        new Container
+                        {
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
+                            Width = 45,
+                            Height = 100,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    Anchor = Anchor.TopCentre,
+                                    Origin = Anchor.TopCentre,
+                                    RelativeSizeAxes = Axes.Both,
+                                    Width = 1.25f,
+                                    Colour = Color4.Black.Opacity(0.5f)
+                                },
+                                content = new Container { RelativeSizeAxes = Axes.Both }
+                            }
+                        },
+                        new SpriteText
+                        {
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
+                            TextSize = 14,
+                            Text = description
+                        }
+                    }
+                };
+            }
+
+            protected override void Update()
+            {
+                base.Update();
+
+                foreach (var obj in content.OfType<DrawableHitObject>())
+                {
+                    if (!(obj.HitObject is IHasEndTime endTime))
+                        continue;
+
+                    if (!obj.HasNestedHitObjects)
+                        continue;
+
+                    foreach (var nested in obj.NestedHitObjects)
+                    {
+                        double finalPosition = (nested.HitObject.StartTime - obj.HitObject.StartTime) / endTime.Duration;
+                        switch (direction)
+                        {
+                            case ScrollingDirection.Up:
+                                nested.Y = (float)(finalPosition * content.DrawHeight);
+                                break;
+                            case ScrollingDirection.Down:
+                                nested.Y = (float)(-finalPosition * content.DrawHeight);
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,121 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class TestCaseStage : ManiaInputTestCase
+    {
+        private const int columns = 4;
+
+        private readonly List<ManiaStage> stages = new List<ManiaStage>();
+
+        public TestCaseStage()
+            : base(columns)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Child = new FillFlowContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Spacing = new Vector2(20, 0),
+                Children = new[]
+                {
+                    createStage(ScrollingDirection.Up, ManiaAction.Key1),
+                    createStage(ScrollingDirection.Down, ManiaAction.Key3)
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            AddStep("note", createNote);
+            AddStep("hold note", createHoldNote);
+            AddStep("minor bar line", () => createBarLine(false));
+            AddStep("major bar line", () => createBarLine(true));
+        }
+
+        private void createNote()
+        {
+            foreach (var stage in stages)
+            {
+                for (int i = 0; i < stage.Columns.Count; i++)
+                {
+                    var obj = new Note { Column = i, StartTime = Time.Current + 2000 };
+                    obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                    stage.Add(new DrawableNote(obj, stage.Columns[i].Action));
+                }
+            }
+        }
+
+        private void createHoldNote()
+        {
+            foreach (var stage in stages)
+            {
+                for (int i = 0; i < stage.Columns.Count; i++)
+                {
+                    var obj = new HoldNote { Column = i, StartTime = Time.Current + 2000, Duration = 500 };
+                    obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                    stage.Add(new DrawableHoldNote(obj, stage.Columns[i].Action));
+                }
+            }
+        }
+
+        private void createBarLine(bool major)
+        {
+            foreach (var stage in stages)
+            {
+                var obj = new BarLine
+                {
+                    StartTime = Time.Current + 2000,
+                    ControlPoint = new TimingControlPoint(),
+                    BeatIndex = major ? 0 : 1
+                };
+
+                obj.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+                stage.Add(obj);
+            }
+        }
+
+        private Drawable createStage(ScrollingDirection direction, ManiaAction action)
+        {
+            var specialAction = ManiaAction.Special1;
+
+            var stage = new ManiaStage(direction, 0, new StageDefinition { Columns = 2 }, ref action, ref specialAction) { VisibleTimeRange = { Value = 2000 } };
+            stages.Add(stage);
+
+            return new ScrollingTestContainer(direction)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Y,
+                AutoSizeAxes = Axes.X,
+                Child = stage
+            };
+        }
+    }
+}

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

@@ -329,7 +329,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     break;
             }
 
-            bool isDoubleSample(SampleInfo sample) => sample.Name == SampleInfo.HIT_CLAP && sample.Name == SampleInfo.HIT_FINISH;
+            bool isDoubleSample(SampleInfo sample) => sample.Name == SampleInfo.HIT_CLAP || sample.Name == SampleInfo.HIT_FINISH;
 
             bool canGenerateTwoNotes = (convertType & PatternType.LowProbability) == 0;
             canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);

osu.Game.Rulesets.Mania/Configuration/ManiaConfigManager.cs

@@ -4,6 +4,7 @@
 using osu.Framework.Configuration.Tracking;
 using osu.Game.Configuration;
 using osu.Game.Rulesets.Configuration;
+using osu.Game.Rulesets.Mania.UI;
 
 namespace osu.Game.Rulesets.Mania.Configuration
 {
@@ -19,6 +20,7 @@ namespace osu.Game.Rulesets.Mania.Configuration
             base.InitialiseDefaults();
 
             Set(ManiaSetting.ScrollTime, 1500.0, 50.0, 10000.0, 50.0);
+            Set(ManiaSetting.ScrollDirection, ManiaScrollingDirection.Down);
         }
 
         public override TrackedSettings CreateTrackedSettings() => new TrackedSettings
@@ -29,6 +31,7 @@ namespace osu.Game.Rulesets.Mania.Configuration
 
     public enum ManiaSetting
     {
-        ScrollTime
+        ScrollTime,
+        ScrollDirection
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -16,6 +16,7 @@ using osu.Game.Rulesets.Mania.Replays;
 using osu.Game.Rulesets.Replays.Types;
 using osu.Game.Beatmaps.Legacy;
 using osu.Game.Configuration;
+using osu.Game.Overlays.Settings;
 using osu.Game.Rulesets.Configuration;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mania.Beatmaps;
@@ -155,6 +156,8 @@ namespace osu.Game.Rulesets.Mania
 
         public override IRulesetConfigManager CreateConfig(SettingsStore settings) => new ManiaConfigManager(settings, RulesetInfo);
 
+        public override RulesetSettingsSubsection CreateSettings() => new ManiaSettingsSubsection(this);
+
         public ManiaRuleset(RulesetInfo rulesetInfo = null)
             : base(rulesetInfo)
         {

osu.Game.Rulesets.Mania/ManiaSettingsSubsection.cs

@@ -0,0 +1,34 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Overlays.Settings;
+using osu.Game.Rulesets.Mania.Configuration;
+using osu.Game.Rulesets.Mania.UI;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class ManiaSettingsSubsection : RulesetSettingsSubsection
+    {
+        protected override string Header => "osu!mania";
+
+        public ManiaSettingsSubsection(ManiaRuleset ruleset)
+            : base(ruleset)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ManiaConfigManager config)
+        {
+            Children = new Drawable[]
+            {
+                new SettingsEnumDropdown<ManiaScrollingDirection>
+                {
+                    LabelText = "Scrolling direction",
+                    Bindable = config.GetBindable<ManiaScrollingDirection>(ManiaSetting.ScrollDirection)
+                }
+            };
+        }
+    }
+}

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

@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -75,6 +76,13 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             AddNested(tail);
         }
 
+        protected override void OnDirectionChanged(ScrollingDirection direction)
+        {
+            base.OnDirectionChanged(direction);
+
+            bodyPiece.Anchor = bodyPiece.Origin = direction == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
+        }
+
         public override Color4 AccentColour
         {
             get { return base.AccentColour; }
@@ -100,7 +108,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             base.Update();
 
             // Make the body piece not lie under the head note
-            bodyPiece.Y = head.Height / 2;
+            bodyPiece.Y = (Direction.Value == ScrollingDirection.Up ? 1 : -1) * head.Height / 2;
             bodyPiece.Height = DrawHeight - head.Height / 2 + tail.Height / 2;
         }
 

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

@@ -1,8 +1,12 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
+using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -16,18 +20,29 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
         public new TObject HitObject;
 
+        protected readonly IBindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
+
         protected DrawableManiaHitObject(TObject hitObject, ManiaAction? action = null)
             : base(hitObject)
         {
-            Anchor = Anchor.TopCentre;
-            Origin = Anchor.TopCentre;
-
             HitObject = hitObject;
 
             if (action != null)
                 Action = action.Value;
         }
 
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            Direction.BindTo(scrollingInfo.Direction);
+            Direction.BindValueChanged(OnDirectionChanged, true);
+        }
+
+        protected virtual void OnDirectionChanged(ScrollingDirection direction)
+        {
+            Anchor = Origin = direction == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre;
+        }
+
         protected override void UpdateState(ArmedState state)
         {
             switch (state)

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

@@ -9,6 +9,7 @@ using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -28,14 +29,14 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             CornerRadius = 5;
             Masking = true;
 
-            InternalChildren = new Drawable[]
+            InternalChild = headPiece = new NotePiece();
-            {
+        }
-                headPiece = new NotePiece
+
-                {
+        protected override void OnDirectionChanged(ScrollingDirection direction)
-                    Anchor = Anchor.TopCentre,
+        {
-                    Origin = Anchor.TopCentre
+            base.OnDirectionChanged(direction);
-                }
+
-            };
+            headPiece.Anchor = headPiece.Origin = direction == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre;
         }
 
         public override Color4 AccentColour

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

@@ -1,12 +1,16 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using OpenTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
 {
@@ -18,6 +22,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
         public const float NOTE_HEIGHT = 10;
         private const float head_colour_height = 6;
 
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
         private readonly Box colouredBox;
 
         public NotePiece()
@@ -33,8 +39,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
                 },
                 colouredBox = new Box
                 {
-                    Anchor = Anchor.TopCentre,
-                    Origin = Anchor.TopCentre,
                     RelativeSizeAxes = Axes.X,
                     Height = head_colour_height,
                     Alpha = 0.2f
@@ -42,6 +46,16 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
             };
         }
 
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(direction =>
+            {
+                colouredBox.Anchor = colouredBox.Origin = direction == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre;
+            }, true);
+        }
+
         private Color4 accentColour;
         public Color4 AccentColour
         {

osu.Game.Rulesets.Mania/Replays/ManiaFramedReplayInputHandler.cs

@@ -17,6 +17,6 @@ namespace osu.Game.Rulesets.Mania.Replays
 
         protected override bool IsImportant(ManiaReplayFrame frame) => frame.Actions.Any();
 
-        public override List<InputState> GetPendingStates() => new List<InputState> { new ReplayState<ManiaAction> { PressedActions = CurrentFrame.Actions } };
+        public override List<IInput> GetPendingInputs() => new List<IInput> { new ReplayState<ManiaAction> { PressedActions = CurrentFrame.Actions } };
     }
 }

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

@@ -1,50 +1,51 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using OpenTK;
 using OpenTK.Graphics;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
-using osu.Framework.Graphics.Colour;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
-using System;
 using System.Linq;
 using osu.Framework.Input.Bindings;
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
-    public class Column : ScrollingPlayfield, IKeyBindingHandler<ManiaAction>, IHasAccentColour
+    public class Column : ManiaScrollingPlayfield, IKeyBindingHandler<ManiaAction>, IHasAccentColour
     {
-        private const float key_icon_size = 10;
-        private const float key_icon_corner_radius = 3;
-        private const float key_icon_border_radius = 2;
-
-        private const float hit_target_height = 10;
-        private const float hit_target_bar_height = 2;
-
         private const float column_width = 45;
         private const float special_column_width = 70;
 
-        public ManiaAction Action;
+        private ManiaAction action;
 
-        private readonly Box background;
+        public ManiaAction Action
-        private readonly Box backgroundOverlay;
+        {
-        private readonly Container hitTargetBar;
+            get => action;
-        private readonly Container keyIcon;
+            set
+            {
+                if (action == value)
+                    return;
+                action = value;
+
+                background.Action = value;
+                keyArea.Action = value;
+            }
+        }
+
+        private readonly ColumnBackground background;
+        private readonly ColumnKeyArea keyArea;
+        private readonly ColumnHitObjectArea hitObjectArea;
 
         internal readonly Container TopLevelContainer;
         private readonly Container explosionContainer;
 
-        protected override Container<Drawable> Content => content;
+        protected override Container<Drawable> Content => hitObjectArea;
-        private readonly Container<Drawable> content;
 
-        public Column()
+        public Column(ScrollingDirection direction)
-            : base(ScrollingDirection.Up)
+            : base(direction)
         {
             RelativeSizeAxes = Axes.Y;
             Width = column_width;
@@ -52,71 +53,21 @@ namespace osu.Game.Rulesets.Mania.UI
             Masking = true;
             CornerRadius = 5;
 
-            InternalChildren = new Drawable[]
+            background = new ColumnBackground { RelativeSizeAxes = Axes.Both };
+
+            Container hitTargetContainer;
+
+            InternalChildren = new[]
             {
-                background = new Box
+                // For input purposes, the background is added at the highest depth, but is then proxied back below all other elements
-                {
+                background.CreateProxy(),
-                    Name = "Background",
+                hitTargetContainer = new Container
-                    RelativeSizeAxes = Axes.Both,
-                    Alpha = 0.3f
-                },
-                backgroundOverlay = new Box
-                {
-                    Name = "Background Gradient Overlay",
-                    RelativeSizeAxes = Axes.Both,
-                    Height = 0.5f,
-                    Anchor = Anchor.TopLeft,
-                    Origin = Anchor.TopLeft,
-                    Blending = BlendingMode.Additive,
-                    Alpha = 0
-                },
-                new Container
                 {
                     Name = "Hit target + hit objects",
                     RelativeSizeAxes = Axes.Both,
-                    Padding = new MarginPadding { Top = ManiaStage.HIT_TARGET_POSITION },
                     Children = new Drawable[]
                     {
-                        new Container
+                        hitObjectArea = new ColumnHitObjectArea { RelativeSizeAxes = Axes.Both },
-                        {
-                            Name = "Hit target",
-                            RelativeSizeAxes = Axes.X,
-                            Height = hit_target_height,
-                            Children = new Drawable[]
-                            {
-                                new Box
-                                {
-                                    Name = "Background",
-                                    RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.Black
-                                },
-                                hitTargetBar = new Container
-                                {
-                                    Name = "Bar",
-                                    RelativeSizeAxes = Axes.X,
-                                    Height = hit_target_bar_height,
-                                    Masking = true,
-                                    Children = new[]
-                                    {
-                                        new Box
-                                        {
-                                            RelativeSizeAxes = Axes.Both
-                                        }
-                                    }
-                                }
-                            }
-                        },
-                        content = new Container
-                        {
-                            Name = "Hit objects",
-                            RelativeSizeAxes = Axes.Both,
-                        },
-                        // For column lighting, we need to capture input events before the notes
-                        new InputTarget
-                        {
-                            Pressed = onPressed,
-                            Released = onReleased
-                        },
                         explosionContainer = new Container
                         {
                             Name = "Hit explosions",
@@ -124,46 +75,27 @@ namespace osu.Game.Rulesets.Mania.UI
                         }
                     }
                 },
-                new Container
+                keyArea = new ColumnKeyArea
                 {
-                    Name = "Key",
                     RelativeSizeAxes = Axes.X,
                     Height = ManiaStage.HIT_TARGET_POSITION,
-                    Children = new Drawable[]
-                    {
-                        new Box
-                        {
-                            Name = "Key gradient",
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientVertical(Color4.Black, Color4.Black.Opacity(0)),
-                            Alpha = 0.5f
-                        },
-                        keyIcon = new Container
-                        {
-                            Name = "Key icon",
-                            Anchor = Anchor.Centre,
-                            Origin = Anchor.Centre,
-                            Size = new Vector2(key_icon_size),
-                            Masking = true,
-                            CornerRadius = key_icon_corner_radius,
-                            BorderThickness = 2,
-                            BorderColour = Color4.White, // Not true
-                            Children = new[]
-                            {
-                                new Box
-                                {
-                                    RelativeSizeAxes = Axes.Both,
-                                    Alpha = 0,
-                                    AlwaysPresent = true
-                                }
-                            }
-                        }
-                    }
                 },
+                background,
                 TopLevelContainer = new Container { RelativeSizeAxes = Axes.Both }
             };
 
             TopLevelContainer.Add(explosionContainer.CreateProxy());
+
+            Direction.BindValueChanged(d =>
+            {
+                hitTargetContainer.Padding = new MarginPadding
+                {
+                    Top = d == ScrollingDirection.Up ? ManiaStage.HIT_TARGET_POSITION : 0,
+                    Bottom = d == ScrollingDirection.Down ? ManiaStage.HIT_TARGET_POSITION : 0,
+                };
+
+                keyArea.Anchor = keyArea.Origin= d == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
+            }, true);
         }
 
         public override Axes RelativeSizeAxes => Axes.Y;
@@ -192,22 +124,9 @@ namespace osu.Game.Rulesets.Mania.UI
                     return;
                 accentColour = value;
 
-                background.Colour = accentColour;
+                background.AccentColour = value;
-                backgroundOverlay.Colour = ColourInfo.GradientVertical(accentColour.Opacity(0.6f), accentColour.Opacity(0));
+                keyArea.AccentColour = value;
-
+                hitObjectArea.AccentColour = value;
-                hitTargetBar.EdgeEffect = new EdgeEffectParameters
-                {
-                    Type = EdgeEffectType.Glow,
-                    Radius = 5,
-                    Colour = accentColour.Opacity(0.5f),
-                };
-
-                keyIcon.EdgeEffect = new EdgeEffectParameters
-                {
-                    Type = EdgeEffectType.Glow,
-                    Radius = 5,
-                    Colour = accentColour.Opacity(0.5f),
-                };
             }
         }
 
@@ -228,48 +147,10 @@ namespace osu.Game.Rulesets.Mania.UI
             if (!judgement.IsHit || !judgedObject.DisplayJudgement)
                 return;
 
-            explosionContainer.Add(new HitExplosion(judgedObject));
+            explosionContainer.Add(new HitExplosion(judgedObject)
-        }
-
-        private bool onPressed(ManiaAction action)
-        {
-            if (action == Action)
             {
-                backgroundOverlay.FadeTo(1, 50, Easing.OutQuint).Then().FadeTo(0.5f, 250, Easing.OutQuint);
+                Anchor = Direction == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre
-                keyIcon.ScaleTo(1.4f, 50, Easing.OutQuint).Then().ScaleTo(1.3f, 250, Easing.OutQuint);
+            });
-            }
-
-            return false;
-        }
-
-        private bool onReleased(ManiaAction action)
-        {
-            if (action == Action)
-            {
-                backgroundOverlay.FadeTo(0, 250, Easing.OutQuint);
-                keyIcon.ScaleTo(1f, 125, Easing.OutQuint);
-            }
-
-            return false;
-        }
-
-        /// <summary>
-        /// This is a simple container which delegates various input events that have to be captured before the notes.
-        /// </summary>
-        private class InputTarget : Container, IKeyBindingHandler<ManiaAction>
-        {
-            public Func<ManiaAction, bool> Pressed;
-            public Func<ManiaAction, bool> Released;
-
-            public InputTarget()
-            {
-                RelativeSizeAxes = Axes.Both;
-                AlwaysPresent = true;
-                Alpha = 0;
-            }
-
-            public bool OnPressed(ManiaAction action) => Pressed?.Invoke(action) ?? false;
-            public bool OnReleased(ManiaAction action) => Released?.Invoke(action) ?? false;
         }
 
         public bool OnPressed(ManiaAction action)

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

@@ -0,0 +1,106 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Input.Bindings;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.UI.Components
+{
+    public class ColumnBackground : CompositeDrawable, IKeyBindingHandler<ManiaAction>, IHasAccentColour
+    {
+        public ManiaAction Action;
+
+        private Box background;
+        private Box backgroundOverlay;
+
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            InternalChildren = new[]
+            {
+                background = new Box
+                {
+                    Name = "Background",
+                    RelativeSizeAxes = Axes.Both,
+                    Alpha = 0.3f
+                },
+                backgroundOverlay = new Box
+                {
+                    Name = "Background Gradient Overlay",
+                    RelativeSizeAxes = Axes.Both,
+                    Height = 0.5f,
+                    Blending = BlendingMode.Additive,
+                    Alpha = 0
+                }
+            };
+
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(direction =>
+            {
+                backgroundOverlay.Anchor = backgroundOverlay.Origin = direction == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
+                updateColours();
+            }, true);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateColours();
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (accentColour == value)
+                    return;
+                accentColour = value;
+
+                updateColours();
+            }
+        }
+
+        private void updateColours()
+        {
+            if (!IsLoaded)
+                return;
+
+            background.Colour = AccentColour;
+
+            var brightPoint = AccentColour.Opacity(0.6f);
+            var dimPoint = AccentColour.Opacity(0);
+
+            backgroundOverlay.Colour = ColourInfo.GradientVertical(
+                direction.Value == ScrollingDirection.Up ? brightPoint : dimPoint,
+                direction.Value == ScrollingDirection.Up ? dimPoint : brightPoint);
+        }
+
+        public bool OnPressed(ManiaAction action)
+        {
+            if (action == Action)
+                backgroundOverlay.FadeTo(1, 50, Easing.OutQuint).Then().FadeTo(0.5f, 250, Easing.OutQuint);
+            return false;
+        }
+
+        public bool OnReleased(ManiaAction action)
+        {
+            if (action == Action)
+                backgroundOverlay.FadeTo(0, 250, Easing.OutQuint);
+            return false;
+        }
+    }
+}

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

@@ -0,0 +1,99 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.UI.Components
+{
+    public class ColumnHitObjectArea : Container, IHasAccentColour
+    {
+        private const float hit_target_height = 10;
+        private const float hit_target_bar_height = 2;
+
+        private Container<Drawable> content;
+        protected override Container<Drawable> Content => content;
+
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        private Container hitTargetLine;
+
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            Drawable hitTargetBar;
+
+            InternalChildren = new[]
+            {
+                hitTargetBar = new Box
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Height = hit_target_height,
+                    Colour = Color4.Black
+                },
+                hitTargetLine = new Container
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Height = hit_target_bar_height,
+                    Masking = true,
+                    Child = new Box { RelativeSizeAxes = Axes.Both }
+                },
+                content = new Container
+                {
+                    Name = "Hit objects",
+                    RelativeSizeAxes = Axes.Both,
+                },
+            };
+
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(direction =>
+            {
+                Anchor anchor = direction == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
+
+                hitTargetBar.Anchor = hitTargetBar.Origin = anchor;
+                hitTargetLine.Anchor = hitTargetLine.Origin = anchor;
+            }, true);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateColours();
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (accentColour == value)
+                    return;
+                accentColour = value;
+
+                updateColours();
+            }
+        }
+
+        private void updateColours()
+        {
+            if (!IsLoaded)
+                return;
+
+            hitTargetLine.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Glow,
+                Radius = 5,
+                Colour = accentColour.Opacity(0.5f),
+            };
+        }
+    }
+}

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

@@ -0,0 +1,122 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Input.Bindings;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.UI.Components
+{
+    public class ColumnKeyArea : CompositeDrawable, IKeyBindingHandler<ManiaAction>, IHasAccentColour
+    {
+        private const float key_icon_size = 10;
+        private const float key_icon_corner_radius = 3;
+
+        public ManiaAction Action;
+
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        private Container keyIcon;
+
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            Drawable gradient;
+
+            InternalChildren = new[]
+            {
+                gradient = new Box
+                {
+                    Name = "Key gradient",
+                    RelativeSizeAxes = Axes.Both,
+                    Alpha = 0.5f
+                },
+                keyIcon = new Container
+                {
+                    Name = "Key icon",
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Size = new Vector2(key_icon_size),
+                    Masking = true,
+                    CornerRadius = key_icon_corner_radius,
+                    BorderThickness = 2,
+                    BorderColour = Color4.White, // Not true
+                    Children = new[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0,
+                            AlwaysPresent = true
+                        }
+                    }
+                }
+            };
+
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(direction =>
+            {
+                gradient.Colour = ColourInfo.GradientVertical(
+                    direction == ScrollingDirection.Up ? Color4.Black : Color4.Black.Opacity(0),
+                    direction == ScrollingDirection.Up ? Color4.Black.Opacity(0) : Color4.Black);
+            }, true);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateColours();
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (accentColour == value)
+                    return;
+                accentColour = value;
+
+                updateColours();
+            }
+        }
+
+        private void updateColours()
+        {
+            if (!IsLoaded)
+                return;
+
+            keyIcon.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Glow,
+                Radius = 5,
+                Colour = accentColour.Opacity(0.5f),
+            };
+        }
+
+        public bool OnPressed(ManiaAction action)
+        {
+            if (action == Action)
+                keyIcon.ScaleTo(1.4f, 50, Easing.OutQuint).Then().ScaleTo(1.3f, 250, Easing.OutQuint);
+            return false;
+        }
+
+        public bool OnReleased(ManiaAction action)
+        {
+            if (action == Action)
+                keyIcon.ScaleTo(1f, 125, Easing.OutQuint);
+            return false;
+        }
+    }
+}

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

@@ -23,7 +23,6 @@ namespace osu.Game.Rulesets.Mania.UI
         {
             bool isTick = judgedObject is DrawableHoldNoteTick;
 
-            Anchor = Anchor.TopCentre;
             Origin = Anchor.Centre;
 
             RelativeSizeAxes = Axes.X;

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

@@ -0,0 +1,17 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Configuration;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Mania.UI
+{
+    public interface IScrollingInfo
+    {
+        /// <summary>
+        /// The direction <see cref="HitObject"/>s should scroll in.
+        /// </summary>
+        IBindable<ScrollingDirection> Direction { get; }
+    }
+}

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

@@ -8,7 +8,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Configuration;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -17,18 +16,13 @@ using osu.Game.Rulesets.UI.Scrolling;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
-    public class ManiaPlayfield : ScrollingPlayfield
+    public class ManiaPlayfield : ManiaScrollingPlayfield
     {
-        /// <summary>
-        /// Whether this playfield should be inverted. This flips everything inside the playfield.
-        /// </summary>
-        public readonly Bindable<bool> Inverted = new Bindable<bool>(true);
-
         public List<Column> Columns => stages.SelectMany(x => x.Columns).ToList();
         private readonly List<ManiaStage> stages = new List<ManiaStage>();
 
-        public ManiaPlayfield(List<StageDefinition> stageDefinitions)
+        public ManiaPlayfield(ScrollingDirection direction, List<StageDefinition> stageDefinitions)
-            : base(ScrollingDirection.Up)
+            : base(direction)
         {
             if (stageDefinitions == null)
                 throw new ArgumentNullException(nameof(stageDefinitions));
@@ -36,8 +30,6 @@ namespace osu.Game.Rulesets.Mania.UI
             if (stageDefinitions.Count <= 0)
                 throw new ArgumentException("Can't have zero or fewer stages.");
 
-            Inverted.Value = true;
-
             GridContainer playfieldGrid;
             InternalChild = playfieldGrid = new GridContainer
             {
@@ -50,9 +42,8 @@ namespace osu.Game.Rulesets.Mania.UI
             int firstColumnIndex = 0;
             for (int i = 0; i < stageDefinitions.Count; i++)
             {
-                var newStage = new ManiaStage(firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
+                var newStage = new ManiaStage(direction, firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
                 newStage.VisibleTimeRange.BindTo(VisibleTimeRange);
-                newStage.Inverted.BindTo(Inverted);
 
                 playfieldGrid.Content[0][i] = newStage;
 

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

@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Input;
@@ -12,6 +13,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Input.Handlers;
 using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Configuration;
 using osu.Game.Rulesets.Mania.Mods;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
@@ -33,6 +35,9 @@ namespace osu.Game.Rulesets.Mania.UI
 
         public IEnumerable<BarLine> BarLines;
 
+        private readonly Bindable<ManiaScrollingDirection> configDirection = new Bindable<ManiaScrollingDirection>();
+        private ScrollingInfo scrollingInfo;
+
         public ManiaRulesetContainer(Ruleset ruleset, WorkingBeatmap beatmap)
             : base(ruleset, beatmap)
         {
@@ -65,12 +70,24 @@ namespace osu.Game.Rulesets.Mania.UI
         }
 
         [BackgroundDependencyLoader]
-        private void load()
+        private void load(ManiaConfigManager config)
         {
             BarLines.ForEach(Playfield.Add);
+
+            config.BindWith(ManiaSetting.ScrollDirection, configDirection);
+            configDirection.BindValueChanged(d => scrollingInfo.Direction.Value = (ScrollingDirection)d, true);
         }
 
-        protected sealed override Playfield CreatePlayfield() => new ManiaPlayfield(Beatmap.Stages)
+        private DependencyContainer dependencies;
+
+        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        {
+            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies.CacheAs<IScrollingInfo>(scrollingInfo = new ScrollingInfo());
+            return dependencies;
+        }
+
+        protected sealed override Playfield CreatePlayfield() => new ManiaPlayfield(scrollingInfo.Direction, Beatmap.Stages)
         {
             Anchor = Anchor.Centre,
             Origin = Anchor.Centre,
@@ -100,5 +117,11 @@ namespace osu.Game.Rulesets.Mania.UI
         protected override Vector2 PlayfieldArea => new Vector2(1, 0.8f);
 
         protected override ReplayInputHandler CreateReplayInputHandler(Replay replay) => new ManiaFramedReplayInputHandler(replay);
+
+        private class ScrollingInfo : IScrollingInfo
+        {
+            public readonly Bindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
+            IBindable<ScrollingDirection> IScrollingInfo.Direction => Direction;
+        }
     }
 }

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

@@ -0,0 +1,13 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Mania.UI
+{
+    public enum ManiaScrollingDirection
+    {
+        Up = ScrollingDirection.Up,
+        Down = ScrollingDirection.Down
+    }
+}

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

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Mania.UI
+{
+    public class ManiaScrollingPlayfield : ScrollingPlayfield
+    {
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        public ManiaScrollingPlayfield(ScrollingDirection direction)
+            : base(direction)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(IScrollingInfo scrollingInfo)
+        {
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(direction => Direction.Value = direction, true);
+        }
+    }
+}

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

@@ -5,7 +5,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -24,20 +23,15 @@ namespace osu.Game.Rulesets.Mania.UI
     /// <summary>
     /// A collection of <see cref="Column"/>s.
     /// </summary>
-    internal class ManiaStage : ScrollingPlayfield
+    internal class ManiaStage : ManiaScrollingPlayfield
     {
         public const float HIT_TARGET_POSITION = 50;
 
-        /// <summary>
-        /// Whether this playfield should be inverted. This flips everything inside the playfield.
-        /// </summary>
-        public readonly Bindable<bool> Inverted = new Bindable<bool>(true);
-
         public IReadOnlyList<Column> Columns => columnFlow.Children;
         private readonly FillFlowContainer<Column> columnFlow;
 
-        protected override Container<Drawable> Content => content;
+        protected override Container<Drawable> Content => barLineContainer;
-        private readonly Container<Drawable> content;
+        private readonly Container<Drawable> barLineContainer;
 
         public Container<DrawableManiaJudgement> Judgements => judgements;
         private readonly JudgementContainer<DrawableManiaJudgement> judgements;
@@ -49,8 +43,8 @@ namespace osu.Game.Rulesets.Mania.UI
 
         private readonly int firstColumnIndex;
 
-        public ManiaStage(int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
+        public ManiaStage(ScrollingDirection direction, int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
-            : base(ScrollingDirection.Up)
+            : base(direction)
         {
             this.firstColumnIndex = firstColumnIndex;
 
@@ -106,13 +100,12 @@ namespace osu.Game.Rulesets.Mania.UI
                             Width = 1366, // Bar lines should only be masked on the vertical axis
                             BypassAutoSizeAxes = Axes.Both,
                             Masking = true,
-                            Child = content = new Container
+                            Child = barLineContainer = new Container
                             {
                                 Name = "Bar lines",
                                 Anchor = Anchor.TopCentre,
                                 Origin = Anchor.TopCentre,
                                 RelativeSizeAxes = Axes.Y,
-                                Padding = new MarginPadding { Top = HIT_TARGET_POSITION }
                             }
                         },
                         judgements = new JudgementContainer<DrawableManiaJudgement>
@@ -131,7 +124,7 @@ namespace osu.Game.Rulesets.Mania.UI
             for (int i = 0; i < definition.Columns; i++)
             {
                 var isSpecial = definition.IsSpecialColumn(i);
-                var column = new Column
+                var column = new Column(direction)
                 {
                     IsSpecial = isSpecial,
                     Action = isSpecial ? specialColumnStartAction++ : normalColumnStartAction++
@@ -140,14 +133,14 @@ namespace osu.Game.Rulesets.Mania.UI
                 AddColumn(column);
             }
 
-            Inverted.ValueChanged += invertedChanged;
+            Direction.BindValueChanged(d =>
-            Inverted.TriggerChange();
+            {
-        }
+                barLineContainer.Padding = new MarginPadding
-
+                {
-        private void invertedChanged(bool newValue)
+                    Top = d == ScrollingDirection.Up ? HIT_TARGET_POSITION : 0,
-        {
+                    Bottom = d == ScrollingDirection.Down ? HIT_TARGET_POSITION : 0,
-            Scale = new Vector2(1, newValue ? -1 : 1);
+                };
-            Judgements.Scale = Scale;
+            }, true);
         }
 
         public void AddColumn(Column c)
@@ -218,7 +211,7 @@ namespace osu.Game.Rulesets.Mania.UI
         {
             // 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
-            content.Width = columnFlow.Width;
+            barLineContainer.Width = columnFlow.Width;
         }
     }
 }

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

@@ -30,13 +30,16 @@ namespace osu.Game.Rulesets.Osu.Replays
             }
         }
 
-        public override List<InputState> GetPendingStates()
+        public override List<IInput> GetPendingInputs()
         {
-            return new List<InputState>
+            return new List<IInput>
             {
+                new MousePositionAbsoluteInput
+                {
+                    Position = GamefieldToScreenSpace(Position ?? Vector2.Zero)
+                },
                 new ReplayState<OsuAction>
                 {
-                    Mouse = new ReplayMouseState(GamefieldToScreenSpace(Position ?? Vector2.Zero)),
                     PressedActions = CurrentFrame.Actions
                 }
             };

osu.Game.Rulesets.Taiko/Judgements/TaikoIntermediateSwellJudgement.cs

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Taiko.Judgements
+{
+    public class TaikoIntermediateSwellJudgement : TaikoJudgement
+    {
+        public override HitResult MaxResult => HitResult.Perfect;
+
+        public override bool AffectsCombo => false;
+
+        public TaikoIntermediateSwellJudgement()
+        {
+            Final = false;
+        }
+
+        /// <summary>
+        /// Computes the numeric result value for the combo portion of the score.
+        /// </summary>
+        /// <param name="result">The result to compute the value for.</param>
+        /// <returns>The numeric result value.</returns>
+        protected override int NumericResultFor(HitResult result) => 0;
+    }
+}

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

@@ -86,6 +86,9 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 switch (State.Value)
                 {
                     case ArmedState.Idle:
+                        SecondHitAllowed = false;
+                        validKeyPressed = false;
+
                         UnproxyContent();
                         this.Delay(HitObject.HitWindows.HalfWindowFor(HitResult.Miss)).Expire();
                         break;
@@ -95,8 +98,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                         break;
                     case ArmedState.Hit:
                         // If we're far enough away from the left stage, we should bring outselves in front of it
-                        if (X >= -0.05f)
+                        ProxyContent();
-                            ProxyContent();
 
                         var flash = circlePiece?.FlashBox;
                         if (flash != null)

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

@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Judgements;
 
@@ -46,6 +47,19 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 AddJudgement(new TaikoStrongHitJudgement { Result = HitResult.Great });
         }
 
+        protected override void UpdateState(ArmedState state)
+        {
+            base.UpdateState(state);
+
+            switch (state)
+            {
+                case ArmedState.Idle:
+                    firstHitTime = 0;
+                    firstKeyHeld = false;
+                    break;
+            }
+        }
+
         public override bool OnReleased(TaikoAction action)
         {
             if (action == firstHitAction)

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

@@ -2,7 +2,6 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
-using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -20,6 +19,11 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
     public class DrawableSwell : DrawableTaikoHitObject<Swell>
     {
+        /// <summary>
+        /// A judgement is only displayed when the user has complete the swell (either a hit or miss).
+        /// </summary>
+        public override bool DisplayJudgement => AllJudged;
+
         private const float target_ring_thick_border = 1.4f;
         private const float target_ring_thin_border = 1f;
         private const float target_ring_scale = 5f;
@@ -29,11 +33,6 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         private readonly CircularContainer targetRing;
         private readonly CircularContainer expandingRing;
 
-        /// <summary>
-        /// The amount of times the user has hit this swell.
-        /// </summary>
-        private int userHits;
-
         private readonly SwellSymbolPiece symbol;
 
         public DrawableSwell(Swell swell)
@@ -129,9 +128,9 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
             if (userTriggered)
             {
-                userHits++;
+                AddJudgement(new TaikoIntermediateSwellJudgement());
 
-                var completion = (float)userHits / HitObject.RequiredHits;
+                var completion = (float)Judgements.Count / HitObject.RequiredHits;
 
                 expandingRing
                     .FadeTo(expandingRing.Alpha + MathHelper.Clamp(completion / 16, 0.1f, 0.6f), 50)
@@ -142,7 +141,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
                 expandingRing.ScaleTo(1f + Math.Min(target_ring_scale - 1f, (target_ring_scale - 1f) * completion * 1.3f), 260, Easing.OutQuint);
 
-                if (userHits == HitObject.RequiredHits)
+                if (Judgements.Count == HitObject.RequiredHits)
                     AddJudgement(new TaikoJudgement { Result = HitResult.Great });
             }
             else
@@ -151,7 +150,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                     return;
 
                 //TODO: THIS IS SHIT AND CAN'T EXIST POST-TAIKO WORLD CUP
-                AddJudgement(userHits > HitObject.RequiredHits / 2
+                AddJudgement(Judgements.Count > HitObject.RequiredHits / 2
                     ? new TaikoJudgement { Result = HitResult.Good }
                     : new TaikoJudgement { Result = HitResult.Miss });
             }
@@ -162,23 +161,22 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             const float preempt = 100;
             const float out_transition_time = 300;
 
-            double untilStartTime = HitObject.StartTime - Time.Current;
-            double untilJudgement = untilStartTime + (Judgements.FirstOrDefault()?.TimeOffset ?? 0) + HitObject.Duration;
-
-            targetRing.Delay(untilStartTime - preempt).ScaleTo(target_ring_scale, preempt * 4, Easing.OutQuint);
-            this.Delay(untilJudgement).FadeOut(out_transition_time, Easing.Out);
-
             switch (state)
             {
                 case ArmedState.Idle:
                     UnproxyContent();
+                    expandingRing.FadeTo(0);
+                    using (BeginAbsoluteSequence(HitObject.StartTime - preempt, true))
+                        targetRing.ScaleTo(target_ring_scale, preempt * 4, Easing.OutQuint);
                     break;
+                case ArmedState.Miss:
                 case ArmedState.Hit:
-                    bodyContainer.Delay(untilJudgement).ScaleTo(1.4f, out_transition_time);
+                    this.FadeOut(out_transition_time, Easing.Out);
+                    bodyContainer.ScaleTo(1.4f, out_transition_time);
+
+                    Expire();
                     break;
             }
-
-            Expire();
         }
 
         protected override void Update()

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

@@ -17,6 +17,6 @@ namespace osu.Game.Rulesets.Taiko.Replays
 
         protected override bool IsImportant(TaikoReplayFrame frame) => frame.Actions.Any();
 
-        public override List<InputState> GetPendingStates() => new List<InputState> { new ReplayState<TaikoAction> { PressedActions = CurrentFrame.Actions } };
+        public override List<IInput> GetPendingInputs() => new List<IInput> { new ReplayState<TaikoAction> { PressedActions = CurrentFrame.Actions } };
     }
 }

osu.Game.Rulesets.Taiko/TaikoRuleset.cs

@@ -27,14 +27,12 @@ namespace osu.Game.Rulesets.Taiko
 
         public override IEnumerable<KeyBinding> GetDefaultKeyBindings(int variant = 0) => new[]
         {
+            new KeyBinding(InputKey.MouseLeft, TaikoAction.LeftCentre),
+            new KeyBinding(InputKey.MouseRight, TaikoAction.LeftRim),
             new KeyBinding(InputKey.D, TaikoAction.LeftRim),
             new KeyBinding(InputKey.F, TaikoAction.LeftCentre),
             new KeyBinding(InputKey.J, TaikoAction.RightCentre),
             new KeyBinding(InputKey.K, TaikoAction.RightRim),
-            new KeyBinding(InputKey.MouseLeft, TaikoAction.LeftCentre),
-            new KeyBinding(InputKey.MouseLeft, TaikoAction.RightCentre),
-            new KeyBinding(InputKey.MouseRight, TaikoAction.LeftRim),
-            new KeyBinding(InputKey.MouseRight, TaikoAction.RightRim),
         };
 
         public override IEnumerable<Mod> ConvertLegacyMods(LegacyMods mods)

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

@@ -69,11 +69,7 @@ namespace osu.Game.Rulesets.Taiko.UI
                 bool isMajor = currentBeat % (int)currentPoint.TimeSignature == 0;
                 Playfield.Add(isMajor ? new DrawableBarLineMajor(barLine) : new DrawableBarLine(barLine));
 
-                double bl = currentPoint.BeatLength;
+                time += currentPoint.BeatLength * (int)currentPoint.TimeSignature;
-                if (bl < 800)
-                    bl *= (int)currentPoint.TimeSignature;
-
-                time += bl;
                 currentBeat++;
             }
         }

osu.Game.Tests/Visual/TestCaseLounge.cs

@@ -8,6 +8,8 @@ using osu.Framework.Allocation;
 using osu.Game.Beatmaps;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Rulesets;
+using osu.Game.Screens;
+using osu.Game.Screens.Backgrounds;
 using osu.Game.Screens.Multi.Components;
 using osu.Game.Screens.Multi.Screens.Lounge;
 using osu.Game.Users;
@@ -165,6 +167,7 @@ namespace osu.Game.Tests.Visual
             AddStep(@"set rooms", () => lounge.Rooms = rooms);
             selectAssert(1);
             AddStep(@"open room 1", () => clickRoom(1));
+            AddUntilStep(() => lounge.ChildScreen?.IsCurrentScreen == true, "wait until room current");
             AddStep(@"make lounge current", lounge.MakeCurrent);
             filterAssert(@"THE FINAL", LoungeTab.Public, 1);
             filterAssert(string.Empty, LoungeTab.Public, 2);
@@ -198,6 +201,8 @@ namespace osu.Game.Tests.Visual
 
         private class TestLounge : Lounge
         {
+            protected override BackgroundScreen CreateBackground() => new BackgroundScreenDefault();
+
             public IEnumerable<DrawableRoom> ChildRooms => RoomsContainer.Children.Where(r => r.MatchingFilter);
             public Room SelectedRoom => Inspector.Room;
 

osu.Game.Tests/Visual/TestCaseMatch.cs

@@ -0,0 +1,142 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Game.Beatmaps;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Rulesets;
+using osu.Game.Screens.Multi.Screens.Match;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual
+{
+    [TestFixture]
+    public class TestCaseMatch : OsuTestCase
+    {
+        [BackgroundDependencyLoader]
+        private void load(RulesetStore rulesets)
+        {
+            Room room = new Room
+            {
+                Name = { Value = @"One Awesome Room" },
+                Status = { Value = new RoomStatusOpen() },
+                Availability = { Value = RoomAvailability.Public },
+                Type = { Value = new GameTypeTeamVersus() },
+                Beatmap =
+                {
+                    Value = new BeatmapInfo
+                    {
+                        StarDifficulty = 5.02,
+                        Ruleset = rulesets.GetRuleset(1),
+                        Metadata = new BeatmapMetadata
+                        {
+                            Title = @"Paradigm Shift",
+                            Artist = @"Morimori Atsushi",
+                            AuthorString = @"eiri-",
+                        },
+                        BeatmapSet = new BeatmapSetInfo
+                        {
+                            OnlineInfo = new BeatmapSetOnlineInfo
+                            {
+                                Covers = new BeatmapSetOnlineCovers
+                                {
+                                    Cover = @"https://assets.ppy.sh/beatmaps/765055/covers/cover.jpg?1526955337",
+                                },
+                            },
+                        },
+                    },
+                },
+                MaxParticipants = { Value = 5 },
+                Participants =
+                {
+                    Value = new[]
+                    {
+                        new User
+                        {
+                            Username = @"eiri-",
+                            Id = 3388410,
+                            Country = new Country { FlagName = @"US" },
+                            CoverUrl = @"https://assets.ppy.sh/user-profile-covers/3388410/00a8486a247831e1cc4375db519f611ac970bda8bc0057d78b0f540ea38c3e58.jpeg",
+                            IsSupporter = true,
+                        },
+                        new User
+                        {
+                            Username = @"Nepuri",
+                            Id = 6637817,
+                            Country = new Country { FlagName = @"DE" },
+                            CoverUrl = @"https://assets.ppy.sh/user-profile-covers/6637817/9085fc60248b6b5327a72c1dcdecf2dbedba810ae0ab6bcf7224e46b1339632a.jpeg",
+                            IsSupporter = true,
+                        },
+                        new User
+                        {
+                            Username = @"goheegy",
+                            Id = 8057655,
+                            Country = new Country { FlagName = @"GB" },
+                            CoverUrl = @"https://assets.ppy.sh/user-profile-covers/8057655/21cec27c25a11dc197a4ec6a74253dbabb495949b0e0697113352f12007018c5.jpeg",
+                        },
+                        new User
+                        {
+                            Username = @"Alumetri",
+                            Id = 5371497,
+                            Country = new Country { FlagName = @"RU" },
+                            CoverUrl = @"https://assets.ppy.sh/user-profile-covers/5371497/e023b8c7fbe3613e64bd4856703517ea50fbed8a5805dc9acda9efe9897c67e2.jpeg",
+                        },
+                    }
+                },
+            };
+
+            Match match = new Match(room);
+
+            AddStep(@"show", () => Add(match));
+            AddStep(@"null beatmap", () => room.Beatmap.Value = null);
+            AddStep(@"change name", () => room.Name.Value = @"Two Awesome Rooms");
+            AddStep(@"change status", () => room.Status.Value = new RoomStatusPlaying());
+            AddStep(@"change availability", () => room.Availability.Value = RoomAvailability.FriendsOnly);
+            AddStep(@"change type", () => room.Type.Value = new GameTypeTag());
+            AddStep(@"change beatmap", () => room.Beatmap.Value = new BeatmapInfo
+            {
+                StarDifficulty = 4.33,
+                Ruleset = rulesets.GetRuleset(2),
+                Metadata = new BeatmapMetadata
+                {
+                    Title = @"Yasashisa no Riyuu",
+                    Artist = @"ChouCho",
+                    AuthorString = @"celerih",
+                },
+                BeatmapSet = new BeatmapSetInfo
+                {
+                    OnlineInfo = new BeatmapSetOnlineInfo
+                    {
+                        Covers = new BeatmapSetOnlineCovers
+                        {
+                            Cover = @"https://assets.ppy.sh/beatmaps/685391/covers/cover.jpg?1524597970",
+                        },
+                    },
+                },
+            });
+
+            AddStep(@"null max participants", () => room.MaxParticipants.Value = null);
+            AddStep(@"change participants", () => room.Participants.Value = new[]
+            {
+                new User
+                {
+                    Username = @"Spectator",
+                    Id = 702598,
+                    Country = new Country { FlagName = @"KR" },
+                    CoverUrl = @"https://assets.ppy.sh/user-profile-covers/702598/3bbf4cb8b8d2cf8b03145000a975ff27e191ab99b0920832e7dd67386280e288.jpeg",
+                    IsSupporter = true,
+                },
+                new User
+                {
+                    Username = @"celerih",
+                    Id = 4696296,
+                    Country = new Country { FlagName = @"CA" },
+                    CoverUrl = @"https://assets.ppy.sh/user-profile-covers/4696296/7f8500731d0ac66d5472569d146a7be07d9460273361913f22c038867baddaef.jpeg",
+                },
+            });
+
+            AddStep(@"exit", match.Exit);
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseMatchHeader.cs

@@ -0,0 +1,43 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Screens.Multi.Screens.Match;
+
+namespace osu.Game.Tests.Visual
+{
+    [TestFixture]
+    public class TestCaseMatchHeader : OsuTestCase
+    {
+        public TestCaseMatchHeader()
+        {
+            Header header = new Header();
+            Add(header);
+
+            AddStep(@"set beatmap set", () => header.BeatmapSet = new BeatmapSetInfo
+            {
+                OnlineInfo = new BeatmapSetOnlineInfo
+                {
+                    Covers = new BeatmapSetOnlineCovers
+                    {
+                        Cover = @"https://assets.ppy.sh/beatmaps/760757/covers/cover.jpg?1526944540",
+                    },
+                },
+            });
+
+            AddStep(@"change beatmap set", () => header.BeatmapSet = new BeatmapSetInfo
+            {
+                OnlineInfo = new BeatmapSetOnlineInfo
+                {
+                    Covers = new BeatmapSetOnlineCovers
+                    {
+                        Cover = @"https://assets.ppy.sh/beatmaps/761883/covers/cover.jpg?1525557400",
+                    },
+                },
+            });
+
+            AddStep(@"null beatmap set", () => header.BeatmapSet = null);
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseMatchInfo.cs

@@ -0,0 +1,57 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Game.Beatmaps;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Rulesets;
+using osu.Game.Screens.Multi.Screens.Match;
+
+namespace osu.Game.Tests.Visual
+{
+    [TestFixture]
+    public class TestCaseMatchInfo : OsuTestCase
+    {
+        [BackgroundDependencyLoader]
+        private void load(RulesetStore rulesets)
+        {
+            Info info = new Info();
+            Add(info);
+
+            AddStep(@"set name", () => info.Name = @"Room Name?");
+            AddStep(@"set availability", () => info.Availability = RoomAvailability.FriendsOnly);
+            AddStep(@"set status", () => info.Status = new RoomStatusPlaying());
+            AddStep(@"set beatmap", () => info.Beatmap = new BeatmapInfo
+            {
+                StarDifficulty = 2.4,
+                Ruleset = rulesets.GetRuleset(0),
+                Metadata = new BeatmapMetadata
+                {
+                    Title = @"My Song",
+                    Artist = @"VisualTests",
+                    AuthorString = @"osu!lazer",
+                },
+            });
+
+            AddStep(@"set type", () => info.Type = new GameTypeTagTeam());
+
+            AddStep(@"change name", () => info.Name = @"Room Name!");
+            AddStep(@"change availability", () => info.Availability = RoomAvailability.InviteOnly);
+            AddStep(@"change status", () => info.Status = new RoomStatusOpen());
+            AddStep(@"null beatmap", () => info.Beatmap = null);
+            AddStep(@"change type", () => info.Type = new GameTypeTeamVersus());
+            AddStep(@"change beatmap", () => info.Beatmap = new BeatmapInfo
+            {
+                StarDifficulty = 4.2,
+                Ruleset = rulesets.GetRuleset(3),
+                Metadata = new BeatmapMetadata
+                {
+                    Title = @"Your Song",
+                    Artist = @"Tester",
+                    AuthorString = @"Someone",
+                },
+            });
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseMatchParticipants.cs

@@ -0,0 +1,56 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Game.Screens.Multi.Screens.Match;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual
+{
+    [TestFixture]
+    public class TestCaseMatchParticipants : OsuTestCase
+    {
+        public TestCaseMatchParticipants()
+        {
+            Participants participants;
+            Add(participants = new Participants
+            {
+                RelativeSizeAxes = Axes.Both,
+            });
+
+            AddStep(@"set max to null", () => participants.Max = null);
+            AddStep(@"set users", () => participants.Users = new[]
+            {
+                new User
+                {
+                    Username = @"Feppla",
+                    Id = 4271601,
+                    Country = new Country { FlagName = @"SE" },
+                    CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c2.jpg",
+                    IsSupporter = true,
+                },
+                new User
+                {
+                    Username = @"Xilver",
+                    Id = 3099689,
+                    Country = new Country { FlagName = @"IL" },
+                    CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c2.jpg",
+                    IsSupporter = true,
+                },
+                new User
+                {
+                    Username = @"Wucki",
+                    Id = 5287410,
+                    Country = new Country { FlagName = @"FI" },
+                    CoverUrl = @"https://assets.ppy.sh/user-profile-covers/5287410/5cfeaa9dd41cbce038ecdc9d781396ed4b0108089170bf7f50492ef8eadeb368.jpeg",
+                    IsSupporter = true,
+                },
+            });
+
+            AddStep(@"set max", () => participants.Max = 10);
+            AddStep(@"clear users", () => participants.Users = new User[] { });
+            AddStep(@"set max to null", () => participants.Max = null);
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseParallaxContainer.cs

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Graphics.Containers;
+using osu.Game.Screens.Backgrounds;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseParallaxContainer : OsuTestCase
+    {
+        public TestCaseParallaxContainer()
+        {
+            ParallaxContainer parallax;
+
+            Add(parallax = new ParallaxContainer
+            {
+                Child = new BackgroundScreenDefault { Alpha = 0.8f }
+            });
+
+            AddStep("default parallax", () => parallax.ParallaxAmount = ParallaxContainer.DEFAULT_PARALLAX_AMOUNT);
+            AddStep("high parallax", () => parallax.ParallaxAmount = ParallaxContainer.DEFAULT_PARALLAX_AMOUNT * 10);
+            AddStep("no parallax", () => parallax.ParallaxAmount = 0);
+            AddStep("negative parallax", () => parallax.ParallaxAmount = -ParallaxContainer.DEFAULT_PARALLAX_AMOUNT);
+        }
+    }
+}

osu.Game.Tests/Visual/TestCasePreviewTrackManager.cs

@@ -0,0 +1,127 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio.Track;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCasePreviewTrackManager : OsuTestCase, IPreviewTrackOwner
+    {
+        private readonly PreviewTrackManager trackManager = new TestPreviewTrackManager();
+
+        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        {
+            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies.CacheAs(trackManager);
+            dependencies.CacheAs<IPreviewTrackOwner>(this);
+            return dependencies;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            AddInternal(trackManager);
+        }
+
+        [Test]
+        public void TestStartStop()
+        {
+            PreviewTrack track = null;
+
+            AddStep("get track", () => track = getOwnedTrack());
+            AddStep("start", () => track.Start());
+            AddAssert("started", () => track.IsRunning);
+            AddStep("stop", () => track.Stop());
+            AddAssert("stopped", () => !track.IsRunning);
+        }
+
+        [Test]
+        public void TestStartMultipleTracks()
+        {
+            PreviewTrack track1 = null;
+            PreviewTrack track2 = null;
+
+            AddStep("get tracks", () =>
+            {
+                track1 = getOwnedTrack();
+                track2 = getOwnedTrack();
+            });
+
+            AddStep("start track 1", () => track1.Start());
+            AddStep("start track 2", () => track2.Start());
+            AddAssert("track 1 stopped", () => !track1.IsRunning);
+            AddAssert("track 2 started", () => track2.IsRunning);
+        }
+
+        [Test]
+        public void TestCancelFromOwner()
+        {
+            PreviewTrack track = null;
+
+            AddStep("get track", () => track = getOwnedTrack());
+            AddStep("start", () => track.Start());
+            AddStep("stop by owner", () => trackManager.StopAnyPlaying(this));
+            AddAssert("stopped", () => !track.IsRunning);
+        }
+
+        [Test]
+        public void TestCancelFromNonOwner()
+        {
+            TestTrackOwner owner = null;
+            PreviewTrack track = null;
+
+            AddStep("get track", () => AddInternal(owner = new TestTrackOwner(track = getTrack())));
+            AddStep("start", () => track.Start());
+            AddStep("attempt stop", () => trackManager.StopAnyPlaying(this));
+            AddAssert("not stopped", () => track.IsRunning);
+            AddStep("stop by true owner", () => trackManager.StopAnyPlaying(owner));
+            AddAssert("stopped", () => !track.IsRunning);
+        }
+
+        private PreviewTrack getTrack() => trackManager.Get(null);
+
+        private PreviewTrack getOwnedTrack()
+        {
+            var track = getTrack();
+
+            AddInternal(track);
+
+            return track;
+        }
+
+        private class TestTrackOwner : CompositeDrawable, IPreviewTrackOwner
+        {
+            public TestTrackOwner(PreviewTrack track)
+            {
+                AddInternal(track);
+            }
+
+            protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+            {
+                var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+                dependencies.CacheAs<IPreviewTrackOwner>(this);
+                return dependencies;
+            }
+        }
+
+        private class TestPreviewTrackManager : PreviewTrackManager
+        {
+            protected override TrackManagerPreviewTrack CreatePreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager) => new TestPreviewTrack(beatmapSetInfo, trackManager);
+
+            protected class TestPreviewTrack : TrackManagerPreviewTrack
+            {
+                public TestPreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager)
+                    : base(beatmapSetInfo, trackManager)
+                {
+                }
+
+                protected override Track GetTrack() => new TrackVirtual { Length = 100000 };
+            }
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs

@@ -114,7 +114,7 @@ namespace osu.Game.Tests.Visual
 
         private class TestPlayfield : ScrollingPlayfield
         {
-            public readonly ScrollingDirection Direction;
+            public new readonly ScrollingDirection Direction;
 
             public TestPlayfield(ScrollingDirection direction)
                 : base(direction)

osu.Game/Audio/IPreviewTrackOwner.cs

@@ -0,0 +1,16 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Audio
+{
+    /// <summary>
+    /// Interface for objects that can own <see cref="IPreviewTrack"/>s.
+    /// </summary>
+    /// <remarks>
+    /// <see cref="IPreviewTrackOwner"/>s can cancel the currently playing <see cref="PreviewTrack"/> through the
+    /// global <see cref="PreviewTrackManager"/> if they're the owner of the playing <see cref="PreviewTrack"/>.
+    /// </remarks>
+    public interface IPreviewTrackOwner
+    {
+    }
+}

osu.Game/Audio/PreviewTrack.cs

@@ -0,0 +1,103 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Framework.Allocation;
+using osu.Framework.Audio.Track;
+using osu.Framework.Graphics;
+using osu.Framework.Threading;
+
+namespace osu.Game.Audio
+{
+    public abstract class PreviewTrack : Component
+    {
+        /// <summary>
+        /// Invoked when this <see cref="PreviewTrack"/> has stopped playing.
+        /// </summary>
+        public event Action Stopped;
+
+        /// <summary>
+        /// Invoked when this <see cref="PreviewTrack"/> has started playing.
+        /// </summary>
+        public event Action Started;
+
+        private Track track;
+        private bool hasStarted;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            track = GetTrack();
+        }
+
+        /// <summary>
+        /// Length of the track.
+        /// </summary>
+        public double Length => track?.Length ?? 0;
+
+        /// <summary>
+        /// The current track time.
+        /// </summary>
+        public double CurrentTime => track?.CurrentTime ?? 0;
+
+        /// <summary>
+        /// Whether the track is loaded.
+        /// </summary>
+        public bool TrackLoaded => track?.IsLoaded ?? false;
+
+        /// <summary>
+        /// Whether the track is playing.
+        /// </summary>
+        public bool IsRunning => track?.IsRunning ?? false;
+
+        protected override void Update()
+        {
+            base.Update();
+
+            // Todo: Track currently doesn't signal its completion, so we have to handle it manually
+            if (hasStarted && track.HasCompleted)
+                Stop();
+        }
+
+        private ScheduledDelegate startDelegate;
+
+        /// <summary>
+        /// Starts playing this <see cref="PreviewTrack"/>.
+        /// </summary>
+        public void Start() => startDelegate = Schedule(() =>
+        {
+            if (track == null)
+                return;
+
+            if (hasStarted)
+                return;
+            hasStarted = true;
+
+            track.Restart();
+            Started?.Invoke();
+        });
+
+        /// <summary>
+        /// Stops playing this <see cref="PreviewTrack"/>.
+        /// </summary>
+        public void Stop()
+        {
+            startDelegate?.Cancel();
+
+            if (track == null)
+                return;
+
+            if (!hasStarted)
+                return;
+            hasStarted = false;
+
+            track.Stop();
+            Stopped?.Invoke();
+        }
+
+        /// <summary>
+        /// Retrieves the audio track.
+        /// </summary>
+        protected abstract Track GetTrack();
+    }
+}

osu.Game/Audio/PreviewTrackManager.cs

@@ -0,0 +1,107 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Track;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.IO.Stores;
+using osu.Game.Beatmaps;
+
+namespace osu.Game.Audio
+{
+    /// <summary>
+    /// A central store for the retrieval of <see cref="PreviewTrack"/>s.
+    /// </summary>
+    public class PreviewTrackManager : Component
+    {
+        private readonly BindableDouble muteBindable = new BindableDouble();
+
+        private AudioManager audio;
+        private TrackManager trackManager;
+
+        private TrackManagerPreviewTrack current;
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio, FrameworkConfigManager config)
+        {
+            trackManager = new TrackManager(new OnlineStore());
+
+            this.audio = audio;
+            audio.AddItem(trackManager);
+
+            config.BindWith(FrameworkSetting.VolumeMusic, trackManager.Volume);
+        }
+
+        /// <summary>
+        /// Retrieves a <see cref="PreviewTrack"/> for a <see cref="BeatmapSetInfo"/>.
+        /// </summary>
+        /// <param name="beatmapSetInfo">The <see cref="BeatmapSetInfo"/> to retrieve the preview track for.</param>
+        /// <returns>The playable <see cref="PreviewTrack"/>.</returns>
+        public PreviewTrack Get(BeatmapSetInfo beatmapSetInfo)
+        {
+            var track = CreatePreviewTrack(beatmapSetInfo, trackManager);
+
+            track.Started += () =>
+            {
+                current?.Stop();
+                current = track;
+                audio.Track.AddAdjustment(AdjustableProperty.Volume, muteBindable);
+            };
+
+            track.Stopped += () =>
+            {
+                current = null;
+                audio.Track.RemoveAdjustment(AdjustableProperty.Volume, muteBindable);
+            };
+
+            return track;
+        }
+
+        /// <summary>
+        /// Stops any currently playing <see cref="PreviewTrack"/>.
+        /// </summary>
+        /// <remarks>
+        /// Only the immediate owner (an object that implements <see cref="IPreviewTrackOwner"/>) of the playing <see cref="PreviewTrack"/>
+        /// can globally stop the currently playing <see cref="PreviewTrack"/>. The object holding a reference to the <see cref="PreviewTrack"/>
+        /// can always stop the <see cref="PreviewTrack"/> themselves through <see cref="PreviewTrack.Stop()"/>.
+        /// </remarks>
+        /// <param name="source">The <see cref="IPreviewTrackOwner"/> which may be the owner of the <see cref="PreviewTrack"/>.</param>
+        public void StopAnyPlaying(IPreviewTrackOwner source)
+        {
+            if (current == null || current.Owner != source)
+                return;
+
+            current.Stop();
+            current = null;
+        }
+
+        /// <summary>
+        /// Creates the <see cref="TrackManagerPreviewTrack"/>.
+        /// </summary>
+        protected virtual TrackManagerPreviewTrack CreatePreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager) => new TrackManagerPreviewTrack(beatmapSetInfo, trackManager);
+
+        protected class TrackManagerPreviewTrack : PreviewTrack
+        {
+            public IPreviewTrackOwner Owner { get; private set; }
+
+            private readonly BeatmapSetInfo beatmapSetInfo;
+            private readonly TrackManager trackManager;
+
+            public TrackManagerPreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager)
+            {
+                this.beatmapSetInfo = beatmapSetInfo;
+                this.trackManager = trackManager;
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(IPreviewTrackOwner owner)
+            {
+                Owner = owner;
+            }
+
+            protected override Track GetTrack() => trackManager.Get($"https://b.ppy.sh/preview/{beatmapSetInfo?.OnlineBeatmapSetID}.mp3");
+        }
+    }
+}

osu.Game/Beatmaps/BeatmapManager.cs

@@ -389,6 +389,9 @@ namespace osu.Game.Beatmaps
             if (!force && beatmap.OnlineBeatmapID != null && beatmap.BeatmapSet.OnlineBeatmapSetID != null)
                 return true;
 
+            if (api.State != APIState.Online)
+                return false;
+
             Logger.Log("Attempting online lookup for IDs...", LoggingTarget.Database);
 
             try

osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs

@@ -8,20 +8,32 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Input;
 using OpenTK;
 using osu.Framework.Configuration;
+using osu.Game.Audio;
 using osu.Game.Overlays;
 
 namespace osu.Game.Graphics.Containers
 {
-    public class OsuFocusedOverlayContainer : FocusedOverlayContainer
+    public class OsuFocusedOverlayContainer : FocusedOverlayContainer, IPreviewTrackOwner
     {
         private SampleChannel samplePopIn;
         private SampleChannel samplePopOut;
 
+        private PreviewTrackManager previewTrackManager;
+
         protected readonly Bindable<OverlayActivation> OverlayActivationMode = new Bindable<OverlayActivation>(OverlayActivation.All);
 
-        [BackgroundDependencyLoader(true)]
+        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
-        private void load(OsuGame osuGame, AudioManager audio)
         {
+            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies.CacheAs<IPreviewTrackOwner>(this);
+            return dependencies;
+        }
+
+        [BackgroundDependencyLoader(true)]
+        private void load(OsuGame osuGame, AudioManager audio, PreviewTrackManager previewTrackManager)
+        {
+            this.previewTrackManager = previewTrackManager;
+
             if (osuGame != null)
                 OverlayActivationMode.BindTo(osuGame.OverlayActivationMode);
 
@@ -66,5 +78,11 @@ namespace osu.Game.Graphics.Containers
                     break;
             }
         }
+
+        protected override void PopOut()
+        {
+            base.PopOut();
+            previewTrackManager.StopAnyPlaying(this);
+        }
     }
 }

osu.Game/Graphics/Containers/ParallaxContainer.cs

@@ -16,6 +16,9 @@ namespace osu.Game.Graphics.Containers
     {
         public const float DEFAULT_PARALLAX_AMOUNT = 0.02f;
 
+        /// <summary>
+        /// The amount of parallax movement. Negative values will reverse the direction of parallax relative to user input.
+        /// </summary>
         public float ParallaxAmount = DEFAULT_PARALLAX_AMOUNT;
 
         private Bindable<bool> parallaxEnabled;
@@ -45,7 +48,7 @@ namespace osu.Game.Graphics.Containers
                 if (!parallaxEnabled)
                 {
                     content.MoveTo(Vector2.Zero, firstUpdate ? 0 : 1000, Easing.OutQuint);
-                    content.Scale = new Vector2(1 + ParallaxAmount);
+                    content.Scale = new Vector2(1 + System.Math.Abs(ParallaxAmount));
                 }
             };
         }
@@ -69,7 +72,7 @@ namespace osu.Game.Graphics.Containers
                 double elapsed = MathHelper.Clamp(Clock.ElapsedFrameTime, 0, 1000);
 
                 content.Position = Interpolation.ValueAt(elapsed, content.Position, offset, 0, 1000, Easing.OutQuint);
-                content.Scale = Interpolation.ValueAt(elapsed, content.Scale, new Vector2(1 + ParallaxAmount), 0, 1000, Easing.OutQuint);
+                content.Scale = Interpolation.ValueAt(elapsed, content.Scale, new Vector2(1 + System.Math.Abs(ParallaxAmount)), 0, 1000, Easing.OutQuint);
             }
 
             firstUpdate = false;

osu.Game/Input/Handlers/ReplayInputHandler.cs

@@ -32,16 +32,14 @@ namespace osu.Game.Input.Handlers
 
         public override int Priority => 0;
 
-        public class ReplayState<T> : InputState
+        public class ReplayState<T> : IInput
             where T : struct
         {
             public List<T> PressedActions;
 
-            public override InputState Clone()
+            public void Apply(InputState state, IInputStateChangeHandler handler)
             {
-                var clone = (ReplayState<T>)base.Clone();
+                handler.HandleCustomInput(state, this);
-                clone.PressedActions = new List<T>(PressedActions);
-                return clone;
             }
         }
     }

osu.Game/Migrations/20180621044111_UpdateTaikoDefaultBindings.Designer.cs

@@ -0,0 +1,376 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using osu.Game.Database;
+
+namespace osu.Game.Migrations
+{
+    [DbContext(typeof(OsuDbContext))]
+    [Migration("20180621044111_UpdateTaikoDefaultBindings")]
+    partial class UpdateTaikoDefaultBindings
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "2.1.1-rtm-30846");
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapDifficulty", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<float>("ApproachRate");
+
+                    b.Property<float>("CircleSize");
+
+                    b.Property<float>("DrainRate");
+
+                    b.Property<float>("OverallDifficulty");
+
+                    b.Property<double>("SliderMultiplier");
+
+                    b.Property<double>("SliderTickRate");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("BeatmapDifficulty");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AudioLeadIn");
+
+                    b.Property<int>("BaseDifficultyID");
+
+                    b.Property<int>("BeatDivisor");
+
+                    b.Property<int>("BeatmapSetInfoID");
+
+                    b.Property<bool>("Countdown");
+
+                    b.Property<double>("DistanceSpacing");
+
+                    b.Property<int>("GridSize");
+
+                    b.Property<string>("Hash");
+
+                    b.Property<bool>("Hidden");
+
+                    b.Property<bool>("LetterboxInBreaks");
+
+                    b.Property<string>("MD5Hash");
+
+                    b.Property<int?>("MetadataID");
+
+                    b.Property<int?>("OnlineBeatmapID");
+
+                    b.Property<string>("Path");
+
+                    b.Property<int>("RulesetID");
+
+                    b.Property<bool>("SpecialStyle");
+
+                    b.Property<float>("StackLeniency");
+
+                    b.Property<double>("StarDifficulty");
+
+                    b.Property<string>("StoredBookmarks");
+
+                    b.Property<double>("TimelineZoom");
+
+                    b.Property<string>("Version");
+
+                    b.Property<bool>("WidescreenStoryboard");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("BaseDifficultyID");
+
+                    b.HasIndex("BeatmapSetInfoID");
+
+                    b.HasIndex("Hash");
+
+                    b.HasIndex("MD5Hash");
+
+                    b.HasIndex("MetadataID");
+
+                    b.HasIndex("OnlineBeatmapID")
+                        .IsUnique();
+
+                    b.HasIndex("RulesetID");
+
+                    b.ToTable("BeatmapInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapMetadata", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Artist");
+
+                    b.Property<string>("ArtistUnicode");
+
+                    b.Property<string>("AudioFile");
+
+                    b.Property<string>("AuthorString")
+                        .HasColumnName("Author");
+
+                    b.Property<string>("BackgroundFile");
+
+                    b.Property<int>("PreviewTime");
+
+                    b.Property<string>("Source");
+
+                    b.Property<string>("Tags");
+
+                    b.Property<string>("Title");
+
+                    b.Property<string>("TitleUnicode");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("BeatmapMetadata");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetFileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("BeatmapSetInfoID");
+
+                    b.Property<int>("FileInfoID");
+
+                    b.Property<string>("Filename")
+                        .IsRequired();
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("BeatmapSetInfoID");
+
+                    b.HasIndex("FileInfoID");
+
+                    b.ToTable("BeatmapSetFileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("DeletePending");
+
+                    b.Property<string>("Hash");
+
+                    b.Property<int?>("MetadataID");
+
+                    b.Property<int?>("OnlineBeatmapSetID");
+
+                    b.Property<bool>("Protected");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("DeletePending");
+
+                    b.HasIndex("Hash")
+                        .IsUnique();
+
+                    b.HasIndex("MetadataID");
+
+                    b.HasIndex("OnlineBeatmapSetID")
+                        .IsUnique();
+
+                    b.ToTable("BeatmapSetInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Configuration.DatabasedSetting", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("IntKey")
+                        .HasColumnName("Key");
+
+                    b.Property<int?>("RulesetID");
+
+                    b.Property<string>("StringValue")
+                        .HasColumnName("Value");
+
+                    b.Property<int?>("Variant");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("RulesetID", "Variant");
+
+                    b.ToTable("Settings");
+                });
+
+            modelBuilder.Entity("osu.Game.Input.Bindings.DatabasedKeyBinding", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("IntAction")
+                        .HasColumnName("Action");
+
+                    b.Property<string>("KeysString")
+                        .HasColumnName("Keys");
+
+                    b.Property<int?>("RulesetID");
+
+                    b.Property<int?>("Variant");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("IntAction");
+
+                    b.HasIndex("RulesetID", "Variant");
+
+                    b.ToTable("KeyBinding");
+                });
+
+            modelBuilder.Entity("osu.Game.IO.FileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Hash");
+
+                    b.Property<int>("ReferenceCount");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("Hash")
+                        .IsUnique();
+
+                    b.HasIndex("ReferenceCount");
+
+                    b.ToTable("FileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Rulesets.RulesetInfo", b =>
+                {
+                    b.Property<int?>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("Available");
+
+                    b.Property<string>("InstantiationInfo");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("ShortName");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("Available");
+
+                    b.HasIndex("ShortName")
+                        .IsUnique();
+
+                    b.ToTable("RulesetInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinFileInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("FileInfoID");
+
+                    b.Property<string>("Filename")
+                        .IsRequired();
+
+                    b.Property<int>("SkinInfoID");
+
+                    b.HasKey("ID");
+
+                    b.HasIndex("FileInfoID");
+
+                    b.HasIndex("SkinInfoID");
+
+                    b.ToTable("SkinFileInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinInfo", b =>
+                {
+                    b.Property<int>("ID")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Creator");
+
+                    b.Property<bool>("DeletePending");
+
+                    b.Property<string>("Name");
+
+                    b.HasKey("ID");
+
+                    b.ToTable("SkinInfo");
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapDifficulty", "BaseDifficulty")
+                        .WithMany()
+                        .HasForeignKey("BaseDifficultyID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Beatmaps.BeatmapSetInfo", "BeatmapSet")
+                        .WithMany("Beatmaps")
+                        .HasForeignKey("BeatmapSetInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Beatmaps.BeatmapMetadata", "Metadata")
+                        .WithMany("Beatmaps")
+                        .HasForeignKey("MetadataID");
+
+                    b.HasOne("osu.Game.Rulesets.RulesetInfo", "Ruleset")
+                        .WithMany()
+                        .HasForeignKey("RulesetID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetFileInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapSetInfo")
+                        .WithMany("Files")
+                        .HasForeignKey("BeatmapSetInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.IO.FileInfo", "FileInfo")
+                        .WithMany()
+                        .HasForeignKey("FileInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("osu.Game.Beatmaps.BeatmapSetInfo", b =>
+                {
+                    b.HasOne("osu.Game.Beatmaps.BeatmapMetadata", "Metadata")
+                        .WithMany("BeatmapSets")
+                        .HasForeignKey("MetadataID");
+                });
+
+            modelBuilder.Entity("osu.Game.Skinning.SkinFileInfo", b =>
+                {
+                    b.HasOne("osu.Game.IO.FileInfo", "FileInfo")
+                        .WithMany()
+                        .HasForeignKey("FileInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("osu.Game.Skinning.SkinInfo")
+                        .WithMany("Files")
+                        .HasForeignKey("SkinInfoID")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

osu.Game/Migrations/20180621044111_UpdateTaikoDefaultBindings.cs

@@ -0,0 +1,19 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using osu.Framework.Logging;
+
+namespace osu.Game.Migrations
+{
+    public partial class UpdateTaikoDefaultBindings : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("DELETE FROM KeyBinding WHERE RulesetID = 1");
+            Logger.Log("osu!taiko bindings have been reset due to new defaults", LoggingTarget.Runtime, LogLevel.Important);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            // we can't really tell if these should be restored or not, so let's just not do so.
+        }
+    }
+}

osu.Game/Migrations/OsuDbContextModelSnapshot.cs

@@ -1,11 +1,9 @@
 // <auto-generated />
+using System;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage;
 using osu.Game.Database;
-using System;
 
 namespace osu.Game.Migrations
 {
@@ -16,7 +14,7 @@ namespace osu.Game.Migrations
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("ProductVersion", "2.0.3-rtm-10026");
+                .HasAnnotation("ProductVersion", "2.1.1-rtm-30846");
 
             modelBuilder.Entity("osu.Game.Beatmaps.BeatmapDifficulty", b =>
                 {

osu.Game/OsuGame.cs

@@ -101,6 +101,8 @@ namespace osu.Game
         public OsuGame(string[] args = null)
         {
             this.args = args;
+
+            forwardLoggedErrorsToNotifications();
         }
 
         public void ToggleSettings() => settings.ToggleVisibility();
@@ -305,8 +307,6 @@ namespace osu.Game
                 Depth = -6,
             }, overlayContent.Add);
 
-            forwardLoggedErrorsToNotifications();
-
             dependencies.Cache(settings);
             dependencies.Cache(onscreenDisplay);
             dependencies.Cache(social);
@@ -394,31 +394,40 @@ namespace osu.Game
 
         private void forwardLoggedErrorsToNotifications()
         {
-            int recentErrorCount = 0;
+            int recentLogCount = 0;
 
             const double debounce = 5000;
 
             Logger.NewEntry += entry =>
             {
-                if (entry.Level < LogLevel.Error || entry.Target == null) return;
+                if (entry.Level < LogLevel.Important || entry.Target == null) return;
 
-                if (recentErrorCount < 2)
+                const int short_term_display_limit = 3;
+
+                if (recentLogCount < short_term_display_limit)
                 {
-                    notifications.Post(new SimpleNotification
+                    Schedule(() => notifications.Post(new SimpleNotification
                     {
-                        Icon = FontAwesome.fa_bomb,
+                        Icon = entry.Level == LogLevel.Important ? FontAwesome.fa_exclamation_circle : FontAwesome.fa_bomb,
-                        Text = (recentErrorCount == 0 ? entry.Message : "Subsequent errors occurred and have been logged.") + "\nClick to view log files.",
+                        Text = entry.Message,
+                    }));
+                }
+                else if (recentLogCount == short_term_display_limit)
+                {
+                    Schedule(() => notifications.Post(new SimpleNotification
+                    {
+                        Icon = FontAwesome.fa_ellipsis_h,
+                        Text = "Subsequent messages have been logged. Click to view log files.",
                         Activated = () =>
                         {
                             Host.Storage.GetStorageForDirectory("logs").OpenInNativeExplorer();
                             return true;
                         }
-                    });
+                    }));
                 }
 
-                Interlocked.Increment(ref recentErrorCount);
+                Interlocked.Increment(ref recentLogCount);
-
+                Scheduler.AddDelayed(() => Interlocked.Decrement(ref recentLogCount), debounce);
-                Scheduler.AddDelayed(() => Interlocked.Decrement(ref recentErrorCount), debounce);
             };
         }
 

osu.Game/OsuGameBase.cs

@@ -21,6 +21,7 @@ using osu.Game.Online.API;
 using osu.Framework.Graphics.Performance;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Logging;
+using osu.Game.Audio;
 using osu.Game.Database;
 using osu.Game.Graphics.Textures;
 using osu.Game.Input;
@@ -187,6 +188,10 @@ namespace osu.Game
 
             KeyBindingStore.Register(globalBinding);
             dependencies.Cache(globalBinding);
+
+            PreviewTrackManager previewTrackManager;
+            dependencies.Cache(previewTrackManager = new PreviewTrackManager());
+            Add(previewTrackManager);
         }
 
         protected override void LoadComplete()

osu.Game/Overlays/BeatmapSet/Buttons/PreviewButton.cs

@@ -2,13 +2,13 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Framework.Allocation;
-using osu.Framework.Audio.Track;
 using osu.Framework.Configuration;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
@@ -25,7 +25,7 @@ namespace osu.Game.Overlays.BeatmapSet.Buttons
         private readonly Box bg, progress;
         private readonly PlayButton playButton;
 
-        private Track preview => playButton.Preview;
+        private PreviewTrack preview => playButton.Preview;
         public Bindable<bool> Playing => playButton.Playing;
 
         public BeatmapSetInfo BeatmapSet
@@ -66,7 +66,7 @@ namespace osu.Game.Overlays.BeatmapSet.Buttons
                 },
             };
 
-            Action = () => Playing.Value = !Playing.Value;
+            Action = () => playButton.TriggerOnClick();
             Playing.ValueChanged += newValue => progress.FadeTo(newValue ? 1 : 0, 100);
         }
 
@@ -89,12 +89,6 @@ namespace osu.Game.Overlays.BeatmapSet.Buttons
                 progress.Width = 0;
         }
 
-        protected override void Dispose(bool isDisposing)
-        {
-            Playing.Value = false;
-            base.Dispose(isDisposing);
-        }
-
         protected override bool OnHover(InputState state)
         {
             bg.FadeColour(Color4.Black.Opacity(0.5f), 100);

osu.Game/Overlays/BeatmapSet/Details.cs

@@ -102,8 +102,6 @@ namespace osu.Game.Overlays.BeatmapSet
             updateDisplay();
         }
 
-        public void StopPreview() => preview.Playing.Value = false;
-
         private class DetailBox : Container
         {
             private readonly Container content;

osu.Game/Overlays/BeatmapSetOverlay.cs

@@ -1,9 +1,8 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Linq;
 using osu.Framework.Allocation;
-using OpenTK;
-using OpenTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,9 +14,10 @@ using osu.Game.Graphics.Containers;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.BeatmapSet;
-using osu.Game.Rulesets;
 using osu.Game.Overlays.BeatmapSet.Scores;
-using System.Linq;
+using osu.Game.Rulesets;
+using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -124,8 +124,6 @@ namespace osu.Game.Overlays
         protected override void PopOut()
         {
             base.PopOut();
-            header.Details.StopPreview();
-
             FadeEdgeEffectTo(0, WaveContainer.DISAPPEAR_DURATION, Easing.Out).OnComplete(_ => BeatmapSet = null);
         }
 

osu.Game/Overlays/Direct/DirectPanel.cs

@@ -4,22 +4,22 @@
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Extensions.Color4Extensions;
-using OpenTK;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Input;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using OpenTK.Graphics;
-using osu.Framework.Input;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API.Requests;
-using osu.Framework.Configuration;
+using OpenTK;
-using osu.Framework.Audio.Track;
+using OpenTK.Graphics;
 
 namespace osu.Game.Overlays.Direct
 {
@@ -35,7 +35,7 @@ namespace osu.Game.Overlays.Direct
         private BeatmapManager beatmaps;
         private BeatmapSetOverlay beatmapSetOverlay;
 
-        public Track Preview => PlayButton.Preview;
+        public PreviewTrack Preview => PlayButton.Preview;
         public Bindable<bool> PreviewPlaying => PlayButton.Playing;
         protected abstract PlayButton PlayButton { get; }
         protected abstract Box PreviewBar { get; }
@@ -113,7 +113,7 @@ namespace osu.Game.Overlays.Direct
         {
             base.Update();
 
-            if (PreviewPlaying && Preview != null && Preview.IsLoaded)
+            if (PreviewPlaying && Preview != null && Preview.TrackLoaded)
             {
                 PreviewBar.Width = (float)(Preview.CurrentTime / Preview.Length);
             }
@@ -141,7 +141,6 @@ namespace osu.Game.Overlays.Direct
         protected override bool OnClick(InputState state)
         {
             ShowInformation();
-            PreviewPlaying.Value = false;
             return true;
         }
 

osu.Game/Overlays/Direct/PlayButton.cs

@@ -1,25 +1,23 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using OpenTK.Graphics;
 using osu.Framework.Allocation;
-using osu.Framework.Audio;
-using osu.Framework.Audio.Track;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input;
-using osu.Framework.IO.Stores;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
+using OpenTK.Graphics;
 
 namespace osu.Game.Overlays.Direct
 {
     public class PlayButton : Container
     {
-        public readonly Bindable<bool> Playing = new Bindable<bool>();
+        public readonly BindableBool Playing = new BindableBool();
-        public Track Preview { get; private set; }
+        public PreviewTrack Preview { get; private set; }
 
         private BeatmapSetInfo beatmapSet;
 
@@ -31,9 +29,11 @@ namespace osu.Game.Overlays.Direct
                 if (value == beatmapSet) return;
                 beatmapSet = value;
 
-                Playing.Value = false;
+                Preview?.Stop();
-                trackLoader = null;
+                Preview?.Expire();
                 Preview = null;
+
+                Playing.Value = false;
             }
         }
 
@@ -41,8 +41,6 @@ namespace osu.Game.Overlays.Direct
         private readonly SpriteIcon icon;
         private readonly LoadingAnimation loadingAnimation;
 
-        private readonly BindableDouble muteBindable = new BindableDouble();
-
         private const float transition_duration = 500;
 
         private bool loading
@@ -50,15 +48,9 @@ namespace osu.Game.Overlays.Direct
             set
             {
                 if (value)
-                {
                     loadingAnimation.Show();
-                    icon.FadeOut(transition_duration * 5, Easing.OutQuint);
-                }
                 else
-                {
                     loadingAnimation.Hide();
-                    icon.FadeIn(transition_duration, Easing.OutQuint);
-                }
             }
         }
 
@@ -78,19 +70,22 @@ namespace osu.Game.Overlays.Direct
                 loadingAnimation = new LoadingAnimation(),
             });
 
-            Playing.ValueChanged += updatePreviewTrack;
+            Playing.ValueChanged += playingStateChanged;
         }
 
+        private PreviewTrackManager previewTrackManager;
+
         [BackgroundDependencyLoader]
-        private void load(OsuColour colour, AudioManager audio)
+        private void load(OsuColour colour, PreviewTrackManager previewTrackManager)
         {
+            this.previewTrackManager = previewTrackManager;
+
             hoverColour = colour.Yellow;
-            this.audio = audio;
         }
 
         protected override bool OnClick(InputState state)
         {
-            Playing.Value = !Playing.Value;
+            Playing.Toggle();
             return true;
         }
 
@@ -107,44 +102,44 @@ namespace osu.Game.Overlays.Direct
             base.OnHoverLost(state);
         }
 
-        protected override void Update()
+        private void playingStateChanged(bool playing)
         {
-            base.Update();
-
-            if (Preview?.HasCompleted ?? false)
-            {
-                Playing.Value = false;
-                Preview = null;
-            }
-        }
-
-        private void updatePreviewTrack(bool playing)
-        {
-            if (playing && BeatmapSet == null)
-            {
-                Playing.Value = false;
-                return;
-            }
-
             icon.Icon = playing ? FontAwesome.fa_stop : FontAwesome.fa_play;
             icon.FadeColour(playing || IsHovered ? hoverColour : Color4.White, 120, Easing.InOutQuint);
 
             if (playing)
             {
-                if (Preview == null)
+                if (BeatmapSet == null)
                 {
-                    beginAudioLoad();
+                    Playing.Value = false;
                     return;
                 }
 
-                Preview.Restart();
+                if (Preview != null)
+                {
+                    Preview.Start();
+                    return;
+                }
 
-                audio.Track.AddAdjustment(AdjustableProperty.Volume, muteBindable);
+                loading = true;
+
+                LoadComponentAsync(Preview = previewTrackManager.Get(beatmapSet), preview =>
+                {
+                    // beatmapset may have changed.
+                    if (Preview != preview)
+                        return;
+
+                    AddInternal(preview);
+                    loading = false;
+                    preview.Stopped += () => Playing.Value = false;
+
+                    // user may have changed their mind.
+                    if (Playing)
+                        preview.Start();
+                });
             }
             else
             {
-                audio.Track.RemoveAdjustment(AdjustableProperty.Volume, muteBindable);
-
                 Preview?.Stop();
                 loading = false;
             }
@@ -155,64 +150,5 @@ namespace osu.Game.Overlays.Direct
             base.Dispose(isDisposing);
             Playing.Value = false;
         }
-
-        private TrackLoader trackLoader;
-        private AudioManager audio;
-
-        private void beginAudioLoad()
-        {
-            if (trackLoader != null)
-            {
-                Preview = trackLoader.Preview;
-                Playing.TriggerChange();
-                return;
-            }
-
-            loading = true;
-
-            LoadComponentAsync(trackLoader = new TrackLoader($"https://b.ppy.sh/preview/{BeatmapSet.OnlineBeatmapSetID}.mp3"),
-                d =>
-                {
-                    // We may have been replaced by another loader
-                    if (trackLoader != d) return;
-
-                    Preview = d?.Preview;
-                    updatePreviewTrack(Playing);
-                    loading = false;
-
-                    Add(trackLoader);
-                });
-        }
-
-        private class TrackLoader : Drawable
-        {
-            private readonly string preview;
-
-            public Track Preview;
-            private TrackManager trackManager;
-
-            public TrackLoader(string preview)
-            {
-                this.preview = preview;
-            }
-
-            [BackgroundDependencyLoader]
-            private void load(AudioManager audio, FrameworkConfigManager config)
-            {
-                // create a local trackManager to bypass the mute we are applying above.
-                audio.AddItem(trackManager = new TrackManager(new OnlineStore()));
-
-                // add back the user's music volume setting (since we are no longer in the global TrackManager's hierarchy).
-                config.BindWith(FrameworkSetting.VolumeMusic, trackManager.Volume);
-
-                Preview = trackManager.Get(preview);
-            }
-
-            protected override void Dispose(bool isDisposing)
-            {
-                base.Dispose(isDisposing);
-                trackManager?.Dispose();
-            }
-        }
     }
 }

osu.Game/Overlays/DirectOverlay.cs

@@ -4,12 +4,12 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-using OpenTK;
 using osu.Framework.Allocation;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Threading;
+using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
@@ -18,6 +18,7 @@ using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Direct;
 using osu.Game.Overlays.SearchableList;
 using osu.Game.Rulesets;
+using OpenTK;
 using OpenTK.Graphics;
 
 namespace osu.Game.Overlays
@@ -32,7 +33,6 @@ namespace osu.Game.Overlays
         private readonly FillFlowContainer resultCountsContainer;
         private readonly OsuSpriteText resultCountsText;
         private FillFlowContainer<DirectPanel> panels;
-        private DirectPanel playing;
 
         protected override Color4 BackgroundColour => OsuColour.FromHex(@"485e74");
         protected override Color4 TrianglesColourLight => OsuColour.FromHex(@"465b71");
@@ -176,10 +176,11 @@ namespace osu.Game.Overlays
         }
 
         [BackgroundDependencyLoader]
-        private void load(OsuColour colours, APIAccess api, RulesetStore rulesets)
+        private void load(OsuColour colours, APIAccess api, RulesetStore rulesets, PreviewTrackManager previewTrackManager)
         {
             this.api = api;
             this.rulesets = rulesets;
+            this.previewTrackManager = previewTrackManager;
 
             resultCountsContainer.Colour = colours.Yellow;
         }
@@ -206,12 +207,6 @@ namespace osu.Game.Overlays
                 panels.FadeOut(200);
                 panels.Expire();
                 panels = null;
-
-                if (playing != null)
-                {
-                    playing.PreviewPlaying.Value = false;
-                    playing = null;
-                }
             }
 
             if (BeatmapSets == null) return;
@@ -242,17 +237,6 @@ namespace osu.Game.Overlays
             {
                 if (panels != null) ScrollFlow.Remove(panels);
                 ScrollFlow.Add(panels = newPanels);
-
-                foreach (DirectPanel panel in p.Children)
-                    panel.PreviewPlaying.ValueChanged += newValue =>
-                    {
-                        if (newValue)
-                        {
-                            if (playing != null && playing != panel)
-                                playing.PreviewPlaying.Value = false;
-                            playing = panel;
-                        }
-                    };
             });
         }
 
@@ -261,6 +245,7 @@ namespace osu.Game.Overlays
         private readonly Bindable<string> currentQuery = new Bindable<string>();
 
         private ScheduledDelegate queryChangedDebounce;
+        private PreviewTrackManager previewTrackManager;
 
         private void updateSearch()
         {
@@ -277,6 +262,8 @@ namespace osu.Game.Overlays
 
             if (Header.Tabs.Current.Value == DirectTab.Search && (Filter.Search.Text == string.Empty || currentQuery == string.Empty)) return;
 
+            previewTrackManager.StopAnyPlaying(this);
+
             getSetsRequest = new SearchBeatmapSetsRequest(currentQuery.Value ?? string.Empty,
                 ((FilterControl)Filter).Ruleset.Value,
                 Filter.DisplayStyleControl.Dropdown.Current.Value,
@@ -300,14 +287,6 @@ namespace osu.Game.Overlays
             api.Queue(getSetsRequest);
         }
 
-        protected override void PopOut()
-        {
-            base.PopOut();
-
-            if (playing != null)
-                playing.PreviewPlaying.Value = false;
-        }
-
         private int distinctCount(List<string> list) => list.Distinct().ToArray().Length;
 
         public class ResultCounts

osu.Game/Overlays/Notifications/SimpleNotification.cs

@@ -59,7 +59,7 @@ namespace osu.Game.Overlays.Notifications
                 }
             });
 
-            Content.Add(textDrawable = new OsuTextFlowContainer(t => t.TextSize = 16)
+            Content.Add(textDrawable = new OsuTextFlowContainer(t => t.TextSize = 14)
             {
                 Colour = OsuColour.Gray(128),
                 AutoSizeAxes = Axes.Y,

osu.Game/Overlays/Profile/Sections/Beatmaps/PaginatedBeatmapContainer.cs

@@ -1,14 +1,13 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System;
+using System.Linq;
-using OpenTK;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Direct;
 using osu.Game.Users;
-using System.Linq;
+using OpenTK;
 
 namespace osu.Game.Overlays.Profile.Sections.Beatmaps
 {
@@ -18,10 +17,6 @@ namespace osu.Game.Overlays.Profile.Sections.Beatmaps
 
         private readonly BeatmapSetType type;
 
-        private DirectPanel currentlyPlaying;
-
-        public event Action<PaginatedBeatmapContainer> BeganPlayingPreview;
-
         public PaginatedBeatmapContainer(BeatmapSetType type, Bindable<User> user, string header, string missing = "None... yet.")
             : base(user, header, missing)
         {
@@ -56,28 +51,10 @@ namespace osu.Game.Overlays.Profile.Sections.Beatmaps
 
                     var panel = new DirectGridPanel(s.ToBeatmapSet(Rulesets));
                     ItemsContainer.Add(panel);
-
-                    panel.PreviewPlaying.ValueChanged += isPlaying =>
-                    {
-                        StopPlayingPreview();
-
-                        if (isPlaying)
-                        {
-                            BeganPlayingPreview?.Invoke(this);
-                            currentlyPlaying = panel;
-                        }
-                    };
                 }
             };
 
             Api.Queue(req);
         }
-
-        public void StopPlayingPreview()
-        {
-            if (currentlyPlaying == null) return;
-            currentlyPlaying.PreviewPlaying.Value = false;
-            currentlyPlaying = null;
-        }
     }
 }

osu.Game/Overlays/Profile/Sections/BeatmapsSection.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System.Linq;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Profile.Sections.Beatmaps;
 
@@ -22,15 +21,6 @@ namespace osu.Game.Overlays.Profile.Sections
                 new PaginatedBeatmapContainer(BeatmapSetType.Unranked, User, "Pending Beatmaps"),
                 new PaginatedBeatmapContainer(BeatmapSetType.Graveyard, User, "Graveyarded Beatmaps"),
             };
-
-            foreach (var paginatedBeatmapContainer in Children.OfType<PaginatedBeatmapContainer>())
-            {
-                paginatedBeatmapContainer.BeganPlayingPreview += _ =>
-                {
-                    foreach (var bc in Children.OfType<PaginatedBeatmapContainer>())
-                        bc.StopPlayingPreview();
-                };
-            }
         }
     }
 }

osu.Game/Overlays/UserProfileOverlay.cs

@@ -2,8 +2,6 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System.Linq;
-using OpenTK;
-using OpenTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -18,6 +16,8 @@ using osu.Game.Online.API.Requests;
 using osu.Game.Overlays.Profile;
 using osu.Game.Overlays.Profile.Sections;
 using osu.Game.Users;
+using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Overlays
 {

osu.Game/Overlays/Volume/MuteButton.cs

@@ -66,7 +66,7 @@ namespace osu.Game.Overlays.Volume
         protected override bool OnHover(InputState state)
         {
             this.TransformTo<MuteButton, SRGBColour>("BorderColour", hoveredColour, 500, Easing.OutQuint);
-            return true;
+            return false;
         }
 
         protected override void OnHoverLost(InputState state)

osu.Game/Overlays/Volume/VolumeMeter.cs

@@ -11,6 +11,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input;
 using osu.Framework.Input.Bindings;
 using osu.Framework.MathUtils;
 using osu.Game.Graphics;
@@ -232,12 +233,13 @@ namespace osu.Game.Overlays.Volume
         {
             float amount = adjust_step * direction;
 
-            var mouse = GetContainingInputManager().CurrentState.Mouse;
+            // handle the case where the OnPressed action was actually a mouse wheel.
-            if (mouse.HasPreciseScroll)
+            // this allows for precise wheel handling.
+            var state = GetContainingInputManager().CurrentState;
+            if (state.Mouse?.ScrollDelta.Y != 0)
             {
-                float scrollDelta = mouse.ScrollDelta.Y;
+                OnScroll(state);
-                if (scrollDelta != 0)
+                return;
-                    amount *= Math.Abs(scrollDelta / 10);
             }
 
             Volume += amount;
@@ -260,6 +262,34 @@ namespace osu.Game.Overlays.Volume
             return false;
         }
 
+        // because volume precision is set to 0.01, this local is required to keep track of more precise adjustments and only apply when possible.
+        private double scrollAmount;
+
+        protected override bool OnScroll(InputState state)
+        {
+            scrollAmount += adjust_step * state.Mouse.ScrollDelta.Y * (state.Mouse.HasPreciseScroll ? 0.1f : 1);
+
+            if (Math.Abs(scrollAmount) < Bindable.Precision)
+                return true;
+
+            Volume += scrollAmount;
+            scrollAmount = 0;
+            return true;
+        }
+
         public bool OnReleased(GlobalAction action) => false;
+
+        private const float transition_length = 500;
+
+        protected override bool OnHover(InputState state)
+        {
+            this.ScaleTo(1.04f, transition_length, Easing.OutExpo);
+            return false;
+        }
+
+        protected override void OnHoverLost(InputState state)
+        {
+            this.ScaleTo(1f, transition_length, Easing.OutExpo);
+        }
     }
 }

osu.Game/Overlays/VolumeOverlay.cs

@@ -9,6 +9,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Framework.Input;
 using osu.Framework.Threading;
 using osu.Game.Graphics;
 using osu.Game.Input.Bindings;
@@ -86,16 +87,10 @@ namespace osu.Game.Overlays
         {
             base.LoadComplete();
 
-            volumeMeterMaster.Bindable.ValueChanged += _ => settingChanged();
+            volumeMeterMaster.Bindable.ValueChanged += _ => Show();
-            volumeMeterEffect.Bindable.ValueChanged += _ => settingChanged();
+            volumeMeterEffect.Bindable.ValueChanged += _ => Show();
-            volumeMeterMusic.Bindable.ValueChanged += _ => settingChanged();
+            volumeMeterMusic.Bindable.ValueChanged += _ => Show();
-            muteButton.Current.ValueChanged += _ => settingChanged();
+            muteButton.Current.ValueChanged += _ => Show();
-        }
-
-        private void settingChanged()
-        {
-            Show();
-            schedulePopOut();
         }
 
         public bool Adjust(GlobalAction action)
@@ -127,6 +122,14 @@ namespace osu.Game.Overlays
 
         private ScheduledDelegate popOutDelegate;
 
+        public override void Show()
+        {
+            if (State == Visibility.Visible)
+                schedulePopOut();
+
+            base.Show();
+        }
+
         protected override void PopIn()
         {
             ClearTransforms();
@@ -140,10 +143,33 @@ namespace osu.Game.Overlays
             this.FadeOut(100);
         }
 
+        protected override bool OnMouseMove(InputState state)
+        {
+            // keep the scheduled event correctly timed as long as we have movement.
+            schedulePopOut();
+            return base.OnMouseMove(state);
+        }
+
+        protected override bool OnHover(InputState state)
+        {
+            schedulePopOut();
+            return true;
+        }
+
+        protected override void OnHoverLost(InputState state)
+        {
+            schedulePopOut();
+            base.OnHoverLost(state);
+        }
+
         private void schedulePopOut()
         {
             popOutDelegate?.Cancel();
-            this.Delay(1000).Schedule(Hide, out popOutDelegate);
+            this.Delay(1000).Schedule(() =>
+            {
+                if (!IsHovered)
+                    Hide();
+            }, out popOutDelegate);
         }
     }
 }

osu.Game/Rulesets/Replays/FramedReplayInputHandler.cs

@@ -46,7 +46,7 @@ namespace osu.Game.Rulesets.Replays
             return true;
         }
 
-        public override List<InputState> GetPendingStates() => new List<InputState>();
+        public override List<IInput> GetPendingInputs() => new List<IInput>();
 
         public bool AtLastFrame => currentFrameIndex == Frames.Count - 1;
         public bool AtFirstFrame => currentFrameIndex == 0;
@@ -119,7 +119,8 @@ namespace osu.Game.Rulesets.Replays
         {
             public ReplayKeyboardState(List<Key> keys)
             {
-                Keys = keys;
+                foreach (var key in keys)
+                    Keys.Add(key);
             }
         }
     }

osu.Game/Rulesets/UI/RulesetInputManager.cs

@@ -15,6 +15,7 @@ using osu.Game.Input.Bindings;
 using osu.Game.Input.Handlers;
 using osu.Game.Screens.Play;
 using OpenTK.Input;
+using static osu.Game.Input.Handlers.ReplayInputHandler;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -29,26 +30,43 @@ namespace osu.Game.Rulesets.UI
             }
         }
 
+        protected override InputState CreateInitialState()
+        {
+            var state = base.CreateInitialState();
+            return new RulesetInputManagerInputState<T>
+            {
+                Mouse = state.Mouse,
+                Keyboard = state.Keyboard,
+                Joystick = state.Joystick,
+                LastReplayState = null
+            };
+        }
+
         protected readonly KeyBindingContainer<T> KeyBindingContainer;
 
         protected override Container<Drawable> Content => KeyBindingContainer;
 
         protected RulesetInputManager(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
         {
-            InternalChild = KeyBindingContainer = new RulesetKeyBindingContainer(ruleset, variant, unique);
+            InternalChild = KeyBindingContainer = CreateKeyBindingContainer(ruleset, variant, unique);
         }
 
         #region Action mapping (for replays)
 
         private List<T> lastPressedActions = new List<T>();
 
-        protected override void HandleNewState(InputState state)
+        public override void HandleCustomInput(InputState state, IInput input)
         {
-            base.HandleNewState(state);
+            if (!(input is ReplayState<T> replayState))
+            {
+                base.HandleCustomInput(state, input);
+                return;
+            }
 
-            var replayState = state as ReplayInputHandler.ReplayState<T>;
+            if (state is RulesetInputManagerInputState<T> inputState)
-
+            {
-            if (replayState == null) return;
+                inputState.LastReplayState = replayState;
+            }
 
             // Here we handle states specifically coming from a replay source.
             // These have extra action information rather than keyboard keys or mouse buttons.
@@ -80,7 +98,7 @@ namespace osu.Game.Rulesets.UI
                 if (replayInputHandler != null) RemoveHandler(replayInputHandler);
 
                 replayInputHandler = value;
-                UseParentState = replayInputHandler == null;
+                UseParentInput = replayInputHandler == null;
 
                 if (replayInputHandler != null)
                     AddHandler(replayInputHandler);
@@ -123,7 +141,7 @@ namespace osu.Game.Rulesets.UI
 
         protected override bool RequiresChildrenUpdate => base.RequiresChildrenUpdate && validState;
 
-        private bool isAttached => replayInputHandler != null && !UseParentState;
+        private bool isAttached => replayInputHandler != null && !UseParentInput;
 
         private const int max_catch_up_updates_per_frame = 50;
 
@@ -249,6 +267,9 @@ namespace osu.Game.Rulesets.UI
         }
 
         #endregion
+
+        protected virtual RulesetKeyBindingContainer CreateKeyBindingContainer(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
+            => new RulesetKeyBindingContainer(ruleset, variant, unique);
     }
 
     /// <summary>
@@ -267,4 +288,10 @@ namespace osu.Game.Rulesets.UI
     {
         void Attach(KeyCounterCollection keyCounter);
     }
+
+    public class RulesetInputManagerInputState<T> : InputState
+    where T : struct
+    {
+        public ReplayState<T> LastReplayState;
+    }
 }

osu.Game/Rulesets/UI/Scrolling/ScrollingHitObjectContainer.cs

@@ -29,17 +29,16 @@ namespace osu.Game.Rulesets.UI.Scrolling
         /// </summary>
         protected readonly SortedList<MultiplierControlPoint> ControlPoints = new SortedList<MultiplierControlPoint>();
 
-        private readonly ScrollingDirection direction;
+        public readonly Bindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
 
         private Cached initialStateCache = new Cached();
 
-        public ScrollingHitObjectContainer(ScrollingDirection direction)
+        public ScrollingHitObjectContainer()
         {
-            this.direction = direction;
-
             RelativeSizeAxes = Axes.Both;
 
-            TimeRange.ValueChanged += v => initialStateCache.Invalidate();
+            TimeRange.ValueChanged += _ => initialStateCache.Invalidate();
+            Direction.ValueChanged += _ => initialStateCache.Invalidate();
         }
 
         private ISpeedChangeVisualiser speedChangeVisualiser;
@@ -100,7 +99,7 @@ namespace osu.Game.Rulesets.UI.Scrolling
 
             if (!initialStateCache.IsValid)
             {
-                speedChangeVisualiser.ComputeInitialStates(Objects, direction, TimeRange, DrawSize);
+                speedChangeVisualiser.ComputeInitialStates(Objects, Direction, TimeRange, DrawSize);
                 initialStateCache.Validate();
             }
         }
@@ -110,7 +109,7 @@ namespace osu.Game.Rulesets.UI.Scrolling
             base.UpdateAfterChildrenLife();
 
             // We need to calculate this as soon as possible after lifetimes so that hitobjects get the final say in their positions
-            speedChangeVisualiser.UpdatePositions(AliveObjects, direction, Time.Current, TimeRange, DrawSize);
+            speedChangeVisualiser.UpdatePositions(AliveObjects, Direction, Time.Current, TimeRange, DrawSize);
         }
     }
 }

osu.Game/Rulesets/UI/Scrolling/ScrollingPlayfield.cs

@@ -54,7 +54,7 @@ namespace osu.Game.Rulesets.UI.Scrolling
         /// </summary>
         public new ScrollingHitObjectContainer HitObjects => (ScrollingHitObjectContainer)base.HitObjects;
 
-        private readonly ScrollingDirection direction;
+        protected readonly Bindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
 
         /// <summary>
         /// Creates a new <see cref="ScrollingPlayfield"/>.
@@ -69,7 +69,7 @@ namespace osu.Game.Rulesets.UI.Scrolling
         protected ScrollingPlayfield(ScrollingDirection direction, float? customWidth = null, float? customHeight = null)
             : base(customWidth, customHeight)
         {
-            this.direction = direction;
+            Direction.Value = direction;
         }
 
         [BackgroundDependencyLoader]
@@ -99,6 +99,11 @@ namespace osu.Game.Rulesets.UI.Scrolling
             return false;
         }
 
-        protected sealed override HitObjectContainer CreateHitObjectContainer() => new ScrollingHitObjectContainer(direction);
+        protected sealed override HitObjectContainer CreateHitObjectContainer()
+        {
+            var container = new ScrollingHitObjectContainer();
+            container.Direction.BindTo(Direction);
+            return container;
+        }
     }
 }

osu.Game/Rulesets/UI/Scrolling/Visualisers/SequentialSpeedChangeVisualiser.cs

@@ -93,6 +93,9 @@ namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
         /// <returns>A positive value indicating the position at <paramref name="time"/>.</returns>
         private double positionAt(double time, double timeRange)
         {
+            if (controlPoints.Count == 0)
+                return time / timeRange;
+
             double length = 0;
 
             // We need to consider all timing points until the specified time and not just the currently-active one,

osu.Game/Screens/Edit/Editor.cs

@@ -185,9 +185,9 @@ namespace osu.Game.Screens.Edit
         protected override bool OnScroll(InputState state)
         {
             if (state.Mouse.ScrollDelta.X + state.Mouse.ScrollDelta.Y > 0)
-                clock.SeekBackward(true);
+                clock.SeekBackward(!clock.IsRunning);
             else
-                clock.SeekForward(true);
+                clock.SeekForward(!clock.IsRunning);
             return true;
         }
 

osu.Game/Screens/Multi/Screens/Lounge/Lounge.cs

@@ -164,7 +164,7 @@ namespace osu.Game.Screens.Multi.Screens.Lounge
 
             // open the room if its selected and is clicked again
             if (room.State == SelectionState.Selected)
-                Push(new Match());
+                Push(new Match.Match(room.Room));
         }
 
         private class RoomsFilterContainer : FillFlowContainer<DrawableRoom>, IHasFilterableChildren

osu.Game/Screens/Multi/Screens/Match.cs

@@ -1,37 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using System;
-using System.Collections.Generic;
-using osu.Framework.Graphics;
-using osu.Framework.Screens;
-using osu.Game.Screens.Backgrounds;
-using osu.Game.Screens.Play;
-using osu.Game.Screens.Select;
-using OpenTK.Graphics;
-
-namespace osu.Game.Screens.Multi.Screens
-{
-    public class Match : ScreenWhiteBox
-    {
-        protected override IEnumerable<Type> PossibleChildren => new[] {
-            typeof(MatchSongSelect),
-            typeof(Player),
-        };
-
-        protected override BackgroundScreen CreateBackground() => new BackgroundScreenCustom(@"Backgrounds/bg4");
-
-        protected override void OnEntering(Screen last)
-        {
-            base.OnEntering(last);
-
-            Background.FadeColour(Color4.DarkGray, 500);
-        }
-
-        protected override bool OnExiting(Screen next)
-        {
-            Background.FadeColour(Color4.White, 500);
-            return base.OnExiting(next);
-        }
-    }
-}

osu.Game/Screens/Multi/Screens/Match/Header.cs

@@ -0,0 +1,184 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Input;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Drawables;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays.SearchableList;
+using OpenTK.Graphics;
+
+namespace osu.Game.Screens.Multi.Screens.Match
+{
+    public class Header : Container
+    {
+        public const float HEIGHT = 200;
+
+        private readonly Box tabStrip;
+        private readonly UpdateableBeatmapSetCover cover;
+
+        public readonly PageTabControl<MatchHeaderPage> Tabs;
+
+        public BeatmapSetInfo BeatmapSet
+        {
+            set => cover.BeatmapSet = value;
+        }
+
+        public Action OnRequestSelectBeatmap;
+
+        public Header()
+        {
+            RelativeSizeAxes = Axes.X;
+            Height = HEIGHT;
+
+            BeatmapSelectButton beatmapButton;
+            Children = new Drawable[]
+            {
+                cover = new UpdateableBeatmapSetCover
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Masking = true,
+                },
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0), Color4.Black.Opacity(0.5f)),
+                },
+                tabStrip = new Box
+                {
+                    Anchor = Anchor.BottomLeft,
+                    Origin = Anchor.BottomLeft,
+                    RelativeSizeAxes = Axes.X,
+                    Height = 1,
+                },
+                new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Padding = new MarginPadding { Horizontal = SearchableListOverlay.WIDTH_PADDING },
+                    Children = new Drawable[]
+                    {
+                        new Container
+                        {
+                            Anchor = Anchor.TopRight,
+                            Origin = Anchor.TopRight,
+                            RelativeSizeAxes = Axes.Y,
+                            Width = 200,
+                            Padding = new MarginPadding { Vertical = 5 },
+                            Child = beatmapButton = new BeatmapSelectButton
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                            },
+                        },
+                        Tabs = new PageTabControl<MatchHeaderPage>
+                        {
+                            Anchor = Anchor.BottomLeft,
+                            Origin = Anchor.BottomLeft,
+                            RelativeSizeAxes = Axes.X,
+                        },
+                    },
+                },
+            };
+
+            beatmapButton.Action = () => OnRequestSelectBeatmap?.Invoke();
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            tabStrip.Colour = colours.Yellow;
+        }
+
+        private class BeatmapSelectButton : OsuClickableContainer
+        {
+            private const float corner_radius = 5;
+            private const float bg_opacity = 0.5f;
+            private const float transition_duration = 100;
+
+            private readonly Box bg;
+            private readonly Container border;
+
+            public BeatmapSelectButton()
+            {
+                Masking = true;
+                CornerRadius = corner_radius;
+
+                Children = new Drawable[]
+                {
+                    bg = new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = Color4.Black,
+                        Alpha = bg_opacity,
+                    },
+                    new OsuSpriteText
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Font = @"Exo2.0-Bold",
+                        Text = "Select Beatmap",
+                    },
+                    border = new Container
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Masking = true,
+                        CornerRadius = corner_radius,
+                        BorderThickness = 4,
+                        Alpha = 0,
+                        Child = new Box // needs a child to show the border
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Alpha = 0,
+                            AlwaysPresent = true
+                        },
+                    },
+                };
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OsuColour colours)
+            {
+                border.BorderColour = colours.Yellow;
+            }
+
+            protected override bool OnHover(InputState state)
+            {
+                border.FadeIn(transition_duration);
+                return base.OnHover(state);
+            }
+
+            protected override void OnHoverLost(InputState state)
+            {
+                base.OnHoverLost(state);
+                border.FadeOut(transition_duration);
+            }
+
+            protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
+            {
+                bg.FadeTo(0.75f, 1000, Easing.Out);
+                return base.OnMouseDown(state, args);
+            }
+
+            protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
+            {
+                bg.FadeTo(bg_opacity, transition_duration);
+                return base.OnMouseUp(state, args);
+            }
+        }
+    }
+
+    public enum MatchHeaderPage
+    {
+        Settings,
+        Room,
+    }
+}

osu.Game/Screens/Multi/Screens/Match/Info.cs

@@ -0,0 +1,210 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Configuration;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Beatmaps;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Overlays.SearchableList;
+using osu.Game.Screens.Multi.Components;
+using OpenTK;
+
+namespace osu.Game.Screens.Multi.Screens.Match
+{
+    public class Info : Container
+    {
+        public const float HEIGHT = 128;
+
+        private readonly OsuSpriteText name, availabilityStatus;
+        private readonly BeatmapTypeInfo beatmapTypeInfo;
+        private readonly ReadyButton readyButton;
+
+        private OsuColour colours;
+
+        public Bindable<bool> Ready => readyButton.Ready;
+
+        public string Name
+        {
+            set { name.Text = value; }
+        }
+
+        private RoomAvailability availability;
+        public RoomAvailability Availability
+        {
+            set
+            {
+                if (value == availability) return;
+                availability = value;
+
+                if (IsLoaded)
+                    updateAvailabilityStatus();
+            }
+        }
+
+        private RoomStatus status;
+        public RoomStatus Status
+        {
+            set
+            {
+                if (value == status) return;
+                status = value;
+
+                if (IsLoaded)
+                    updateAvailabilityStatus();
+            }
+        }
+
+        public BeatmapInfo Beatmap
+        {
+            set { beatmapTypeInfo.Beatmap = value; }
+        }
+
+        public GameType Type
+        {
+            set { beatmapTypeInfo.Type = value; }
+        }
+
+        public Info()
+        {
+            RelativeSizeAxes = Axes.X;
+            Height = HEIGHT;
+
+            Children = new Drawable[]
+            {
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = OsuColour.FromHex(@"28242d"),
+                },
+                new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Padding = new MarginPadding { Horizontal = SearchableListOverlay.WIDTH_PADDING },
+                    Children = new Drawable[]
+                    {
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.Y,
+                            AutoSizeAxes = Axes.X,
+                            Padding = new MarginPadding { Vertical = 20 },
+                            Children = new Drawable[]
+                            {
+                                new FillFlowContainer
+                                {
+                                    AutoSizeAxes = Axes.Both,
+                                    Direction = FillDirection.Vertical,
+                                    Children = new Drawable[]
+                                    {
+                                        name = new OsuSpriteText
+                                        {
+                                            TextSize = 30,
+                                        },
+                                        availabilityStatus = new OsuSpriteText
+                                        {
+                                            TextSize = 14,
+                                        },
+                                    },
+                                },
+                                beatmapTypeInfo = new BeatmapTypeInfo
+                                {
+                                    Anchor = Anchor.BottomLeft,
+                                    Origin = Anchor.BottomLeft,
+                                },
+                            },
+                        },
+                        readyButton = new ReadyButton
+                        {
+                            Anchor = Anchor.TopRight,
+                            Origin = Anchor.TopRight,
+                            RelativeSizeAxes = Axes.Y,
+                            Size = new Vector2(200, 1),
+                            Padding = new MarginPadding { Vertical = 10 },
+                        },
+                    },
+                },
+            };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            this.colours = colours;
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            updateAvailabilityStatus();
+        }
+
+        private void updateAvailabilityStatus()
+        {
+            if (status != null)
+            {
+                availabilityStatus.FadeColour(status.GetAppropriateColour(colours), 100);
+                availabilityStatus.Text = $"{availability.GetDescription()}, {status.Message}";
+            }
+        }
+
+        private class ReadyButton : TriangleButton
+        {
+            public readonly Bindable<bool> Ready = new Bindable<bool>();
+
+            protected override SpriteText CreateText() => new OsuSpriteText
+            {
+                Depth = -1,
+                Origin = Anchor.Centre,
+                Anchor = Anchor.Centre,
+                Font = @"Exo2.0-Light",
+                TextSize = 30,
+            };
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                BackgroundColour = OsuColour.FromHex(@"1187aa");
+                Triangles.ColourLight = OsuColour.FromHex(@"277b9c");
+                Triangles.ColourDark = OsuColour.FromHex(@"1f6682");
+                Triangles.TriangleScale = 1.5f;
+
+                Container active;
+                Add(active = new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Alpha = 0f,
+                    Child = new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Alpha = 0.15f,
+                        Blending = BlendingMode.Additive,
+                    },
+                });
+
+                Action = () => Ready.Value = !Ready.Value;
+
+                Ready.BindValueChanged(value =>
+                {
+                    if (value)
+                    {
+                        Text = "Not Ready";
+                        active.FadeIn(200);
+                    }
+                    else
+                    {
+                        Text = "Ready";
+                        active.FadeOut(200);
+                    }
+                }, true);
+            }
+        }
+    }
+}

osu.Game/Screens/Multi/Screens/Match/Match.cs

@@ -0,0 +1,81 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Beatmaps;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Screens.Select;
+using osu.Game.Users;
+
+namespace osu.Game.Screens.Multi.Screens.Match
+{
+    public class Match : MultiplayerScreen
+    {
+        private readonly Room room;
+        private readonly Participants participants;
+
+        private readonly Bindable<string> nameBind = new Bindable<string>();
+        private readonly Bindable<RoomStatus> statusBind = new Bindable<RoomStatus>();
+        private readonly Bindable<RoomAvailability> availabilityBind = new Bindable<RoomAvailability>();
+        private readonly Bindable<GameType> typeBind = new Bindable<GameType>();
+        private readonly Bindable<BeatmapInfo> beatmapBind = new Bindable<BeatmapInfo>();
+        private readonly Bindable<int?> maxParticipantsBind = new Bindable<int?>();
+        private readonly Bindable<IEnumerable<User>> participantsBind = new Bindable<IEnumerable<User>>();
+
+        protected override Container<Drawable> TransitionContent => participants;
+
+        public override string Type => "room";
+        public override string Title => room.Name.Value;
+
+        public Match(Room room)
+        {
+            this.room = room;
+            Header header;
+            Info info;
+
+            Children = new Drawable[]
+            {
+                header = new Header(),
+                info = new Info
+                {
+                    Margin = new MarginPadding { Top = Header.HEIGHT },
+                },
+                participants = new Participants
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Padding = new MarginPadding { Top = Header.HEIGHT + Info.HEIGHT },
+                },
+            };
+
+            header.OnRequestSelectBeatmap = () => Push(new MatchSongSelect());
+
+            beatmapBind.BindTo(room.Beatmap);
+            beatmapBind.BindValueChanged(b =>
+            {
+                header.BeatmapSet = b?.BeatmapSet;
+                info.Beatmap = b;
+            }, true);
+
+            nameBind.BindTo(room.Name);
+            nameBind.BindValueChanged(n => info.Name = n, true);
+
+            statusBind.BindTo(room.Status);
+            statusBind.BindValueChanged(s => info.Status = s, true);
+
+            availabilityBind.BindTo(room.Availability);
+            availabilityBind.BindValueChanged(a => info.Availability = a, true);
+
+            typeBind.BindTo(room.Type);
+            typeBind.BindValueChanged(t => info.Type = t, true);
+
+            maxParticipantsBind.BindTo(room.MaxParticipants);
+            maxParticipantsBind.BindValueChanged(m => { participants.Max = m; }, true);
+
+            participantsBind.BindTo(room.Participants);
+            participantsBind.BindValueChanged(p => participants.Users = p, true);
+        }
+    }
+}

osu.Game/Screens/Multi/Screens/Match/Participants.cs

@@ -0,0 +1,74 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Overlays.SearchableList;
+using osu.Game.Screens.Multi.Components;
+using osu.Game.Users;
+using OpenTK;
+
+namespace osu.Game.Screens.Multi.Screens.Match
+{
+    public class Participants : Container
+    {
+        private readonly ParticipantCount count;
+        private readonly FillFlowContainer<UserPanel> usersFlow;
+
+        public IEnumerable<User> Users
+        {
+            set {
+                usersFlow.Children = value.Select(u => new UserPanel(u)
+                {
+                    Anchor = Anchor.TopCentre,
+                    Origin = Anchor.TopCentre,
+                    Width = 300,
+                    OnLoadComplete = d => d.FadeInFromZero(60),
+                }).ToList();
+
+                count.Count = value.Count();
+            }
+        }
+
+        public int? Max
+        {
+            set => count.Max = value;
+        }
+
+        public Participants()
+        {
+            Child = new Container
+            {
+                RelativeSizeAxes = Axes.Both,
+                Padding = new MarginPadding { Horizontal = SearchableListOverlay.WIDTH_PADDING },
+                Children = new Drawable[]
+                {
+                    new ScrollContainer
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Padding = new MarginPadding { Top = 10 },
+                        Children = new Drawable[]
+                        {
+                            count = new ParticipantCount
+                            {
+                                Anchor = Anchor.TopRight,
+                                Origin = Anchor.TopRight,
+                            },
+                            usersFlow = new FillFlowContainer<UserPanel>
+                            {
+                                RelativeSizeAxes = Axes.X,
+                                AutoSizeAxes = Axes.Y,
+                                Spacing = new Vector2(5),
+                                Padding = new MarginPadding { Top = 40 },
+                                LayoutDuration = 200,
+                                LayoutEasing = Easing.OutQuint,
+                            },
+                        },
+                    },
+                },
+            };
+        }
+    }
+}

osu.Game/Screens/Multi/Screens/MatchCreate.cs

@@ -1,20 +0,0 @@
-// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using System;
-using System.Collections.Generic;
-
-namespace osu.Game.Screens.Multi.Screens
-{
-    public class MatchCreate : ScreenWhiteBox
-    {
-        protected override IEnumerable<Type> PossibleChildren => new[] {
-                typeof(Match)
-        };
-
-        public MatchCreate()
-        {
-            ValidForResume = false;
-        }
-    }
-}

osu.Game/Screens/Multi/Screens/MultiplayerScreen.cs

@@ -10,9 +10,6 @@ namespace osu.Game.Screens.Multi.Screens
 {
     public abstract class MultiplayerScreen : OsuScreen
     {
-        private const Easing in_easing = Easing.OutQuint;
-        private const Easing out_easing = Easing.InSine;
-
         protected virtual Container<Drawable> TransitionContent => Content;
 
         /// <summary>
@@ -24,16 +21,15 @@ namespace osu.Game.Screens.Multi.Screens
         {
             base.OnEntering(last);
 
-            TransitionContent.MoveToX(200);
+            Content.FadeInFromZero(WaveContainer.APPEAR_DURATION, Easing.OutQuint);
-
+            TransitionContent.FadeInFromZero(WaveContainer.APPEAR_DURATION, Easing.OutQuint);
-            TransitionContent.FadeInFromZero(WaveContainer.APPEAR_DURATION, in_easing);
+            TransitionContent.MoveToX(200).MoveToX(0, WaveContainer.APPEAR_DURATION, Easing.OutQuint);
-            TransitionContent.MoveToX(0, WaveContainer.APPEAR_DURATION, in_easing);
         }
 
         protected override bool OnExiting(Screen next)
         {
-            Content.FadeOut(WaveContainer.DISAPPEAR_DURATION, out_easing);
+            Content.FadeOut(WaveContainer.DISAPPEAR_DURATION, Easing.OutQuint);
-            TransitionContent.MoveToX(200, WaveContainer.DISAPPEAR_DURATION, out_easing);
+            TransitionContent.MoveToX(200, WaveContainer.DISAPPEAR_DURATION, Easing.OutQuint);
 
             return base.OnExiting(next);
         }
@@ -42,16 +38,16 @@ namespace osu.Game.Screens.Multi.Screens
         {
             base.OnResuming(last);
 
-            Content.FadeIn(WaveContainer.APPEAR_DURATION, in_easing);
+            Content.FadeIn(WaveContainer.APPEAR_DURATION, Easing.OutQuint);
-            TransitionContent.MoveToX(0, WaveContainer.APPEAR_DURATION, in_easing);
+            TransitionContent.MoveToX(0, WaveContainer.APPEAR_DURATION, Easing.OutQuint);
         }
 
         protected override void OnSuspending(Screen next)
         {
             base.OnSuspending(next);
 
-            Content.FadeOut(WaveContainer.DISAPPEAR_DURATION, out_easing);
+            Content.FadeOut(WaveContainer.DISAPPEAR_DURATION, Easing.OutQuint);
-            TransitionContent.MoveToX(-200, WaveContainer.DISAPPEAR_DURATION, out_easing);
+            TransitionContent.MoveToX(-200, WaveContainer.DISAPPEAR_DURATION, Easing.OutQuint);
         }
     }
 }

osu.Game/Screens/Play/HUD/QuitButton.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -182,14 +183,14 @@ namespace osu.Game.Screens.Play.HUD
 
             protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
             {
-                if (!pendingAnimation && state.Mouse.Buttons.Count == 1)
+                if (!pendingAnimation && state.Mouse.Buttons.Count() == 1)
                     BeginConfirm();
                 return true;
             }
 
             protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
             {
-                if (state.Mouse.Buttons.Count == 0)
+                if (!state.Mouse.Buttons.Any())
                     AbortConfirm();
                 return true;
             }

osu.Game/Screens/Select/MatchSongSelect.cs

@@ -7,12 +7,7 @@ namespace osu.Game.Screens.Select
     {
         protected override bool OnStart()
         {
-            Schedule(() =>
+            if (IsCurrentScreen) Exit();
-            {
-                // needs to be scheduled else we enter an infinite feedback loop.
-                if (IsCurrentScreen) Exit();
-            });
-
             return true;
         }
     }

osu.Game/Tests/OsuTestBrowser.cs

@@ -3,6 +3,7 @@
 
 using osu.Framework.Platform;
 using osu.Framework.Testing;
+using osu.Game.Graphics;
 using osu.Game.Screens.Backgrounds;
 
 namespace osu.Game.Tests
@@ -13,7 +14,11 @@ namespace osu.Game.Tests
         {
             base.LoadComplete();
 
-            LoadComponentAsync(new BackgroundScreenDefault { Depth = 10 }, AddInternal);
+            LoadComponentAsync(new BackgroundScreenDefault
+            {
+                Colour = OsuColour.Gray(0.5f),
+                Depth = 10
+            }, AddInternal);
 
             // Have to construct this here, rather than in the constructor, because
             // we depend on some dependencies to be loaded within OsuGameBase.load().

osu.Game/Tests/Platform/TestStorage.cs

@@ -7,7 +7,7 @@ namespace osu.Game.Tests.Platform
 {
     public class TestStorage : DesktopStorage
     {
-        public TestStorage(string baseName) : base(baseName)
+        public TestStorage(string baseName) : base(baseName, null)
         {
         }
 

osu.Game/Tests/Visual/ManualInputManagerTestCase.cs

@@ -23,7 +23,7 @@ namespace osu.Game.Tests.Visual
         /// </summary>
         protected void ReturnUserInput()
         {
-            AddStep("Return user input", () => InputManager.UseParentState = true);
+            AddStep("Return user input", () => InputManager.UseParentInput = true);
         }
     }
 }

osu.Game/osu.Game.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.1.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-    <PackageReference Include="ppy.osu.Framework" Version="2018.619.0" />
+    <PackageReference Include="ppy.osu.Framework" Version="2018.622.0" />
     <PackageReference Include="SharpCompress" Version="0.18.1" />
     <PackageReference Include="NUnit" Version="3.10.1" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />