Merge remote-tracking branch 'origin/master' into osu-default-bindings

appveyor.yml

@@ -2,6 +2,9 @@ clone_depth: 1
 version: '{branch}-{build}'
 image: Visual Studio 2017
 configuration: Debug
+cache:
+  - C:\ProgramData\chocolatey\bin -> appveyor.yml
+  - C:\ProgramData\chocolatey\lib -> appveyor.yml
 install:
   - cmd: git submodule update --init --recursive --depth=5
   - cmd: choco install resharper-clt -y

osu.Desktop/OsuGameDesktop.cs

@@ -12,6 +12,7 @@ using osu.Framework.Platform;
 using osu.Game;
 using OpenTK.Input;
 using Microsoft.Win32;
+using osu.Desktop.Updater;
 using osu.Framework.Platform.Windows;
 
 namespace osu.Desktop
@@ -38,6 +39,52 @@ namespace osu.Desktop
             }
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            if (!noVersionOverlay)
+            {
+                LoadComponentAsync(new VersionManager { Depth = int.MinValue }, v =>
+                {
+                    Add(v);
+                    v.State = Visibility.Visible;
+                });
+
+#if NET_FRAMEWORK
+                Add(new SquirrelUpdateManager());
+#else
+                Add(new SimpleUpdateManager());
+#endif
+            }
+        }
+
+        public override void SetHost(GameHost host)
+        {
+            base.SetHost(host);
+            var desktopWindow = host.Window as DesktopGameWindow;
+            if (desktopWindow != null)
+            {
+                desktopWindow.CursorState |= CursorState.Hidden;
+
+                desktopWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
+                desktopWindow.Title = Name;
+
+                desktopWindow.FileDrop += fileDrop;
+            }
+        }
+
+        private void fileDrop(object sender, FileDropEventArgs e)
+        {
+            var filePaths = new[] { e.FileName };
+
+            var firstExtension = Path.GetExtension(filePaths.First());
+
+            if (filePaths.Any(f => Path.GetExtension(f) != firstExtension)) return;
+
+            Task.Factory.StartNew(() => Import(filePaths), TaskCreationOptions.LongRunning);
+        }
+
         /// <summary>
         /// A method of accessing an osu-stable install in a controlled fashion.
         /// </summary>
@@ -77,45 +124,5 @@ namespace osu.Desktop
             {
             }
         }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            if (!noVersionOverlay)
-            {
-                LoadComponentAsync(new VersionManager { Depth = int.MinValue }, v =>
-                {
-                    Add(v);
-                    v.State = Visibility.Visible;
-                });
-            }
-        }
-
-        public override void SetHost(GameHost host)
-        {
-            base.SetHost(host);
-            var desktopWindow = host.Window as DesktopGameWindow;
-            if (desktopWindow != null)
-            {
-                desktopWindow.CursorState |= CursorState.Hidden;
-
-                desktopWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
-                desktopWindow.Title = Name;
-
-                desktopWindow.FileDrop += fileDrop;
-            }
-        }
-
-        private void fileDrop(object sender, FileDropEventArgs e)
-        {
-            var filePaths = new[] { e.FileName };
-
-            var firstExtension = Path.GetExtension(filePaths.First());
-
-            if (filePaths.Any(f => Path.GetExtension(f) != firstExtension)) return;
-
-            Task.Factory.StartNew(() => Import(filePaths), TaskCreationOptions.LongRunning);
-        }
     }
 }

osu.Desktop/Overlays/VersionManager.cs

@@ -91,10 +91,6 @@ namespace osu.Desktop.Overlays
                     }
                 }
             };
-
-#if NET_FRAMEWORK
-            Add(new SquirrelUpdateManager());
-#endif
         }
 
         protected override void LoadComplete()

osu.Desktop/Program.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using osu.Framework;
 using osu.Framework.Platform;
 using osu.Game.IPC;
+
 #if NET_FRAMEWORK
 using System.Runtime;
 #endif
@@ -18,10 +19,7 @@ namespace osu.Desktop
         [STAThread]
         public static int Main(string[] args)
         {
-            // required to initialise native SQLite libraries on some platforms.
-
-            if (!RuntimeInfo.IsMono)
-                useMulticoreJit();
+            useMultiCoreJit();
 
             // Back up the cwd before DesktopGameHost changes it
             var cwd = Environment.CurrentDirectory;
@@ -54,7 +52,7 @@ namespace osu.Desktop
             }
         }
 
-        private static void useMulticoreJit()
+        private static void useMultiCoreJit()
         {
 #if NET_FRAMEWORK
             var directory = Directory.CreateDirectory(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Profiles"));

osu.Desktop/Updater/SimpleUpdateManager.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.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using osu.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.IO.Network;
+using osu.Framework.Platform;
+using osu.Game;
+using osu.Game.Graphics;
+using osu.Game.Overlays;
+using osu.Game.Overlays.Notifications;
+
+namespace osu.Desktop.Updater
+{
+    /// <summary>
+    /// An update manager that shows notifications if a newer release is detected.
+    /// Installation is left up to the user.
+    /// </summary>
+    internal class SimpleUpdateManager : CompositeDrawable
+    {
+        private NotificationOverlay notificationOverlay;
+        private string version;
+        private GameHost host;
+
+        [BackgroundDependencyLoader]
+        private void load(NotificationOverlay notification, OsuGameBase game, GameHost host)
+        {
+            notificationOverlay = notification;
+
+            this.host = host;
+            version = game.Version;
+
+            if (game.IsDeployedBuild)
+                Schedule(() => Task.Run(() => checkForUpdateAsync()));
+        }
+
+        private async void checkForUpdateAsync()
+        {
+            var releases = new JsonWebRequest<GitHubRelease>("https://api.github.com/repos/ppy/osu/releases/latest");
+            await releases.PerformAsync();
+
+            var latest = releases.ResponseObject;
+
+            if (latest.TagName != version)
+            {
+                notificationOverlay.Post(new SimpleNotification
+                {
+                    Text = $"A newer release of osu! has been found ({version} → {latest.TagName}).\n\n"
+                           + "Click here to download the new version, which can be installed over the top of your existing installation",
+                    Icon = FontAwesome.fa_upload,
+                    Activated = () =>
+                    {
+                        host.OpenUrlExternally(getBestUrl(latest));
+                        return true;
+                    }
+                });
+            }
+        }
+
+        private string getBestUrl(GitHubRelease release)
+        {
+            GitHubAsset bestAsset = null;
+
+            switch (RuntimeInfo.OS)
+            {
+                case RuntimeInfo.Platform.Windows:
+                    bestAsset = release.Assets?.FirstOrDefault(f => f.Name.EndsWith(".exe"));
+                    break;
+                case RuntimeInfo.Platform.MacOsx:
+                    bestAsset = release.Assets?.FirstOrDefault(f => f.Name.EndsWith(".app.zip"));
+                    break;
+            }
+
+            return bestAsset?.BrowserDownloadUrl ?? release.HtmlUrl;
+        }
+
+        public class GitHubRelease
+        {
+            [JsonProperty("html_url")]
+            public string HtmlUrl { get; set; }
+
+            [JsonProperty("tag_name")]
+            public string TagName { get; set; }
+
+            [JsonProperty("assets")]
+            public List<GitHubAsset> Assets { get; set; }
+        }
+
+        public class GitHubAsset
+        {
+            [JsonProperty("name")]
+            public string Name { get; set; }
+
+            [JsonProperty("browser_download_url")]
+            public string BrowserDownloadUrl { get; set; }
+        }
+    }
+}

osu.Desktop/Updater/SquirrelUpdateManager.cs

@@ -3,6 +3,7 @@
 
 #if NET_FRAMEWORK
 using System;
+using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -16,7 +17,7 @@ using OpenTK;
 using OpenTK.Graphics;
 using Squirrel;
 
-namespace osu.Desktop.Overlays
+namespace osu.Desktop.Updater
 {
     public class SquirrelUpdateManager : Component
     {
@@ -35,7 +36,7 @@ namespace osu.Desktop.Overlays
             notificationOverlay = notification;
 
             if (game.IsDeployedBuild)
-                Schedule(() => checkForUpdateAsync());
+                Schedule(() => Task.Run(() => checkForUpdateAsync()));
         }
 
         private async void checkForUpdateAsync(bool useDeltaPatching = true, UpdateProgressNotification notification = null)

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

@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Catch.Tests
             {
             }
 
-            public void ToggleHyperDash(bool status) => MovableCatcher.SetHyperdashState(status ? 2 : 1);
+            public void ToggleHyperDash(bool status) => MovableCatcher.SetHyperDashState(status ? 2 : 1);
         }
     }
 }

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

@@ -8,9 +8,9 @@ using osu.Game.Rulesets.Catch.Objects;
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
-    public class TestCaseHyperdash : Game.Tests.Visual.TestCasePlayer
+    public class TestCaseHyperDash : Game.Tests.Visual.TestCasePlayer
     {
-        public TestCaseHyperdash()
+        public TestCaseHyperDash()
             : base(new CatchRuleset())
         {
         }

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

@@ -61,12 +61,12 @@ namespace osu.Game.Rulesets.Catch.Difficulty
                 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 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,
+                ApproachRate = preempt > 1200.0 ? -(preempt - 1800.0) / 120.0 : -(preempt - 1200.0) / 150.0 + 5.0,
                 MaxCombo = difficultyHitObjects.Count
             };
         }

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

@@ -255,11 +255,11 @@ namespace osu.Game.Rulesets.Catch.UI
                     double positionDifference = target.X * CatchPlayfield.BASE_WIDTH - catcherPosition;
                     double velocity = positionDifference / Math.Max(1.0, timeDifference - 1000.0 / 60.0);
 
-                    SetHyperdashState(Math.Abs(velocity), target.X);
+                    SetHyperDashState(Math.Abs(velocity), target.X);
                 }
                 else
                 {
-                    SetHyperdashState();
+                    SetHyperDashState();
                 }
 
                 return validCatch;
@@ -270,18 +270,18 @@ namespace osu.Game.Rulesets.Catch.UI
             private float hyperDashTargetPosition;
 
             /// <summary>
-            /// Whether we are hypderdashing or not.
+            /// Whether we are hyper-dashing or not.
             /// </summary>
             public bool HyperDashing => hyperDashModifier != 1;
 
             /// <summary>
-            /// Set hyperdash state.
+            /// Set hyper-dash state.
             /// </summary>
-            /// <param name="modifier">The speed multiplier. If this is less or equals to 1, this catcher will be non-hyperdashing state.</param>
-            /// <param name="targetPosition">When this catcher crosses this position, this catcher ends hyperdashing.</param>
-            public void SetHyperdashState(double modifier = 1, float targetPosition = -1)
+            /// <param name="modifier">The speed multiplier. If this is less or equals to 1, this catcher will be non-hyper-dashing state.</param>
+            /// <param name="targetPosition">When this catcher crosses this position, this catcher ends hyper-dashing.</param>
+            public void SetHyperDashState(double modifier = 1, float targetPosition = -1)
             {
-                const float hyperdash_transition_length = 180;
+                const float hyper_dash_transition_length = 180;
 
                 bool previouslyHyperDashing = HyperDashing;
                 if (modifier <= 1 || X == targetPosition)
@@ -291,8 +291,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
                     if (previouslyHyperDashing)
                     {
-                        this.FadeColour(Color4.White, hyperdash_transition_length, Easing.OutQuint);
-                        this.FadeTo(1, hyperdash_transition_length, Easing.OutQuint);
+                        this.FadeColour(Color4.White, hyper_dash_transition_length, Easing.OutQuint);
+                        this.FadeTo(1, hyper_dash_transition_length, Easing.OutQuint);
                     }
                 }
                 else
@@ -303,8 +303,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
                     if (!previouslyHyperDashing)
                     {
-                        this.FadeColour(Color4.OrangeRed, hyperdash_transition_length, Easing.OutQuint);
-                        this.FadeTo(0.2f, hyperdash_transition_length, Easing.OutQuint);
+                        this.FadeColour(Color4.OrangeRed, hyper_dash_transition_length, Easing.OutQuint);
+                        this.FadeTo(0.2f, hyper_dash_transition_length, Easing.OutQuint);
                         Trail = true;
                     }
                 }
@@ -370,7 +370,7 @@ namespace osu.Game.Rulesets.Catch.UI
                     hyperDashDirection < 0 && hyperDashTargetPosition > X)
                 {
                     X = hyperDashTargetPosition;
-                    SetHyperdashState();
+                    SetHyperDashState();
                 }
             }
 

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

@@ -21,9 +21,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             this.direction = direction;
         }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IScrollingInfo>(new ScrollingInfo { Direction = { Value = direction }});
             return dependencies;
         }

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

@@ -137,9 +137,9 @@ namespace osu.Game.Rulesets.Mania.Tests
                 };
             }
 
-            protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+            protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
             {
-                var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+                var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
                 dependencies.CacheAs<IBindable<ManiaAction>>(new Bindable<ManiaAction>());
                 return dependencies;
             }

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

@@ -19,9 +19,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
             : base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
         {
-            var endtimeData = HitObject as IHasEndTime;
-
-            endTime = endtimeData?.EndTime ?? 0;
+            endTime = (HitObject as IHasEndTime)?.EndTime ?? 0;
         }
 
         public override IEnumerable<Pattern> Generate()

osu.Game.Rulesets.Mania/ManiaSettingsSubsection.cs

@@ -19,14 +19,14 @@ namespace osu.Game.Rulesets.Mania
         }
 
         [BackgroundDependencyLoader]
-        private void load(ManiaConfigManager config)
+        private void load()
         {
             Children = new Drawable[]
             {
                 new SettingsEnumDropdown<ManiaScrollingDirection>
                 {
                     LabelText = "Scrolling direction",
-                    Bindable = config.GetBindable<ManiaScrollingDirection>(ManiaSetting.ScrollDirection)
+                    Bindable = ((ManiaConfigManager)Config).GetBindable<ManiaScrollingDirection>(ManiaSetting.ScrollDirection)
                 }
             };
         }

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

@@ -118,9 +118,9 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IBindable<ManiaAction>>(Action);
             return dependencies;
         }

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

@@ -70,19 +70,19 @@ namespace osu.Game.Rulesets.Mania.UI
         }
 
         [BackgroundDependencyLoader]
-        private void load(ManiaConfigManager config)
+        private void load()
         {
             BarLines.ForEach(Playfield.Add);
 
-            config.BindWith(ManiaSetting.ScrollDirection, configDirection);
+            ((ManiaConfigManager)Config).BindWith(ManiaSetting.ScrollDirection, configDirection);
             configDirection.BindValueChanged(d => scrollingInfo.Direction.Value = (ScrollingDirection)d, true);
         }
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IScrollingInfo>(scrollingInfo = new ScrollingInfo());
             return dependencies;
         }

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

@@ -54,7 +54,7 @@ namespace osu.Game.Rulesets.Osu.Tests
     public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
-        /// A sane value to account for osu!stable using ints everwhere.
+        /// A sane value to account for osu!stable using <see cref="int"/>s everywhere.
         /// </summary>
         private const double conversion_lenience = 2;
 

osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs

@@ -61,19 +61,19 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             double speedRating = Math.Sqrt(skills[1].DifficultyValue()) * difficulty_multiplier;
             double starRating = aimRating + speedRating + Math.Abs(aimRating - speedRating) / 2;
 
-            // Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be remoevd in the future
+            // Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be removed in the future
             double hitWindowGreat = (int)(beatmap.HitObjects.First().HitWindows.Great / 2) / timeRate;
-            double preEmpt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
+            double preempt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / timeRate;
 
             int maxCombo = beatmap.HitObjects.Count();
-            // Add the ticks + tail of the slider. 1 is subtracted because the "headcircle" would be counted twice (once for the slider itself in the line above)
+            // Add the ticks + tail of the slider. 1 is subtracted because the head circle would be counted twice (once for the slider itself in the line above)
             maxCombo += beatmap.HitObjects.OfType<Slider>().Sum(s => s.NestedHitObjects.Count - 1);
 
             return new OsuDifficultyAttributes(mods, starRating)
             {
                 AimStrain = aimRating,
                 SpeedStrain = speedRating,
-                ApproachRate = preEmpt > 1200 ? (1800 - preEmpt) / 120 : (1200 - preEmpt) / 150 + 5,
+                ApproachRate = preempt > 1200 ? (1800 - preempt) / 120 : (1200 - preempt) / 150 + 5,
                 OverallDifficulty = (80 - hitWindowGreat) / 6,
                 MaxCombo = maxCombo
             };

osu.Game.Rulesets.Osu/Mods/OsuModHidden.cs

@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Mods
 
         public override void ApplyToDrawableHitObjects(IEnumerable<DrawableHitObject> drawables)
         {
-            void adjustFadeIn(OsuHitObject h) => h.TimeFadein = h.TimePreempt * fade_in_duration_multiplier;
+            void adjustFadeIn(OsuHitObject h) => h.TimeFadeIn = h.TimePreempt * fade_in_duration_multiplier;
 
             foreach (var d in drawables.OfType<DrawableOsuHitObject>())
             {
@@ -41,7 +41,7 @@ namespace osu.Game.Rulesets.Osu.Mods
 
             var h = d.HitObject;
 
-            var fadeOutStartTime = h.StartTime - h.TimePreempt + h.TimeFadein;
+            var fadeOutStartTime = h.StartTime - h.TimePreempt + h.TimeFadeIn;
             var fadeOutDuration = h.TimePreempt * fade_out_duration_multiplier;
 
             // new duration from completed fade in to end (before fading out)

osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointRenderer.cs

@@ -96,12 +96,12 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
 
                         using (fp.BeginAbsoluteSequence(fadeInTime))
                         {
-                            fp.FadeIn(currHitObject.TimeFadein);
-                            fp.ScaleTo(1, currHitObject.TimeFadein, Easing.Out);
+                            fp.FadeIn(currHitObject.TimeFadeIn);
+                            fp.ScaleTo(1, currHitObject.TimeFadeIn, Easing.Out);
 
-                            fp.MoveTo(pointEndPosition, currHitObject.TimeFadein, Easing.Out);
+                            fp.MoveTo(pointEndPosition, currHitObject.TimeFadeIn, Easing.Out);
 
-                            fp.Delay(fadeOutTime - fadeInTime).FadeOut(currHitObject.TimeFadein);
+                            fp.Delay(fadeOutTime - fadeInTime).FadeOut(currHitObject.TimeFadeIn);
                         }
 
                         fp.Expire(true);

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

@@ -100,7 +100,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             base.UpdatePreemptState();
 
-            ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadein * 2, HitObject.TimePreempt));
+            ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadeIn * 2, HitObject.TimePreempt));
             ApproachCircle.ScaleTo(1.1f, HitObject.TimePreempt);
         }
 

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

@@ -45,7 +45,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 AccentColour = skin.GetValue<SkinConfiguration, Color4>(s => s.ComboColours.Count > 0 ? s.ComboColours[combo.ComboIndex % s.ComboColours.Count] : (Color4?)null) ?? Color4.White;
         }
 
-        protected virtual void UpdatePreemptState() => this.FadeIn(HitObject.TimeFadein);
+        protected virtual void UpdatePreemptState() => this.FadeIn(HitObject.TimeFadeIn);
 
         protected virtual void UpdateCurrentState(ArmedState state)
         {

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

@@ -167,7 +167,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             Disc.Tracking = OsuActionInputManager.PressedActions.Any(x => x == OsuAction.LeftButton || x == OsuAction.RightButton);
             if (!spmCounter.IsPresent && Disc.Tracking)
-                spmCounter.FadeIn(HitObject.TimeFadein);
+                spmCounter.FadeIn(HitObject.TimeFadeIn);
 
             base.Update();
         }

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SliderBody.cs

@@ -212,7 +212,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             var spanProgress = slider.ProgressAt(completionProgress);
 
             double start = 0;
-            double end = SnakingIn ? MathHelper.Clamp((Time.Current - (slider.StartTime - slider.TimePreempt)) / slider.TimeFadein, 0, 1) : 1;
+            double end = SnakingIn ? MathHelper.Clamp((Time.Current - (slider.StartTime - slider.TimePreempt)) / slider.TimeFadeIn, 0, 1) : 1;
 
             if (span >= slider.SpanCount() - 1)
             {

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

@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Objects
         public event Action<Vector2> PositionChanged;
 
         public double TimePreempt = 600;
-        public double TimeFadein = 400;
+        public double TimeFadeIn = 400;
 
         private Vector2 position;
 
@@ -65,7 +65,7 @@ namespace osu.Game.Rulesets.Osu.Objects
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
             TimePreempt = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1800, 1200, 450);
-            TimeFadein = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1200, 800, 300);
+            TimeFadeIn = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1200, 800, 300);
 
             Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
         }

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

@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Objects
                 // This is so on repeats ticks don't appear too late to be visually processed by the player.
                 offset = 200;
             else
-                offset = TimeFadein * 0.66f;
+                offset = TimeFadeIn * 0.66f;
 
             TimePreempt = (StartTime - SpanStartTime) / 2 + offset;
         }

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

@@ -222,10 +222,10 @@ namespace osu.Game.Tests.Beatmaps.Formats
             {
                 var hitObjects = decoder.Decode(stream).HitObjects;
 
-                Assert.AreEqual("hitnormal", getTestableSampleInfo(hitObjects[0]).Name);
-                Assert.AreEqual("hitnormal", getTestableSampleInfo(hitObjects[1]).Name);
-                Assert.AreEqual("hitnormal2", getTestableSampleInfo(hitObjects[2]).Name);
-                Assert.AreEqual("hitnormal", getTestableSampleInfo(hitObjects[3]).Name);
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[0]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[1]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal2", getTestableSampleInfo(hitObjects[2]).LookupNames.First());
+                Assert.AreEqual("normal-hitnormal", getTestableSampleInfo(hitObjects[3]).LookupNames.First());
             }
 
             SampleInfo getTestableSampleInfo(HitObject hitObject) => hitObject.SampleControlPoint.ApplyTo(new SampleInfo { Name = "hitnormal" });
@@ -242,7 +242,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
 
                 Assert.AreEqual("hit_1.wav", hitObjects[0].Samples[0].LookupNames.First());
                 Assert.AreEqual("hit_2.wav", hitObjects[1].Samples[0].LookupNames.First());
-                Assert.AreEqual("hitnormal2", getTestableSampleInfo(hitObjects[2]).Name);
+                Assert.AreEqual("normal-hitnormal2", getTestableSampleInfo(hitObjects[2]).LookupNames.First());
                 Assert.AreEqual("hit_1.wav", hitObjects[3].Samples[0].LookupNames.First());
             }
 

osu.Game.Tests/Visual/TestCaseButtonSystem.cs

@@ -1,6 +1,9 @@
 // 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.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -13,6 +16,13 @@ namespace osu.Game.Tests.Visual
     [TestFixture]
     public class TestCaseButtonSystem : OsuTestCase
     {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(ButtonSystem),
+            typeof(ButtonArea),
+            typeof(Button)
+        };
+
         public TestCaseButtonSystem()
         {
             OsuLogo logo;
@@ -30,6 +40,9 @@ namespace osu.Game.Tests.Visual
             };
 
             buttons.SetOsuLogo(logo);
+
+            foreach (var s in Enum.GetValues(typeof(ButtonSystemState)).OfType<ButtonSystemState>().Skip(1))
+                AddStep($"State to {s}", () => buttons.State = s);
         }
     }
 }

osu.Game.Tests/Visual/TestCaseDisclaimer.cs

@@ -0,0 +1,28 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Screens.Menu;
+using OpenTK.Graphics;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseDisclaimer : OsuTestCase
+    {
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Children = new Drawable[]
+            {
+                new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = Color4.Black,
+                },
+                new Disclaimer()
+            };
+        }
+    }
+}

osu.Game.Tests/Visual/TestCaseMods.cs

@@ -114,7 +114,7 @@ namespace osu.Game.Tests.Visual
             testMultiplierTextColour(noFailMod, modSelect.LowMultiplierColour);
             testMultiplierTextColour(hiddenMod, modSelect.HighMultiplierColour);
 
-            testUnimplmentedMod(autoPilotMod);
+            testUnimplementedMod(autoPilotMod);
         }
 
         private void testManiaMods(ManiaRuleset ruleset)
@@ -154,7 +154,7 @@ namespace osu.Game.Tests.Visual
                 checkNotSelected(mod);
         }
 
-        private void testUnimplmentedMod(Mod mod)
+        private void testUnimplementedMod(Mod mod)
         {
             selectNext(mod);
             checkNotSelected(mod);

osu.Game.Tests/Visual/TestCaseOnScreenDisplay.cs

@@ -88,7 +88,7 @@ namespace osu.Game.Tests.Visual
 
         private class TestOnScreenDisplay : OnScreenDisplay
         {
-            protected override void Display(Drawable toDisplay) => toDisplay.FadeIn().ResizeHeightTo(110);
+            protected override void DisplayTemporarily(Drawable toDisplay) => toDisplay.FadeIn().ResizeHeightTo(110);
         }
     }
 }

osu.Game.Tests/Visual/TestCaseOsuGame.cs

@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Timing;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
 using OpenTK.Graphics;
@@ -23,19 +22,15 @@ namespace osu.Game.Tests.Visual
 
         public TestCaseOsuGame()
         {
-            var rateAdjustClock = new StopwatchClock(true);
-            var framedClock = new FramedClock(rateAdjustClock);
-            framedClock.ProcessFrame();
-
-            Add(new Box
+            Children = new Drawable[]
+            {
+                new Box
                 {
                     RelativeSizeAxes = Axes.Both,
                     Colour = Color4.Black,
-            });
-
-            Add(new Loader());
-
-            AddSliderStep("Playback speed", 0.0, 2.0, 1, v => rateAdjustClock.Rate = v);
+                },
+                new Loader()
+            };
         }
     }
 }

osu.Game.Tests/Visual/TestCasePreviewTrackManager.cs

@@ -14,9 +14,9 @@ namespace osu.Game.Tests.Visual
     {
         private readonly PreviewTrackManager trackManager = new TestPreviewTrackManager();
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs(trackManager);
             dependencies.CacheAs<IPreviewTrackOwner>(this);
             return dependencies;
@@ -101,9 +101,9 @@ namespace osu.Game.Tests.Visual
                 AddInternal(track);
             }
 
-            protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+            protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
             {
-                var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+                var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
                 dependencies.CacheAs<IPreviewTrackOwner>(this);
                 return dependencies;
             }

osu.Game.Tests/Visual/TestCaseToolbar.cs

@@ -16,8 +16,8 @@ namespace osu.Game.Tests.Visual
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {
             typeof(ToolbarButton),
-            typeof(ToolbarModeSelector),
-            typeof(ToolbarModeButton),
+            typeof(ToolbarRulesetSelector),
+            typeof(ToolbarRulesetButton),
             typeof(ToolbarNotificationButton),
         };
 

osu.Game.Tests/Visual/TestCaseUserProfile.cs

@@ -53,7 +53,6 @@ namespace osu.Game.Tests.Visual
                 CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c1.jpg",
                 JoinDate = DateTimeOffset.Now.AddDays(-1),
                 LastVisit = DateTimeOffset.Now,
-                Age = 1,
                 ProfileOrder = new[] { "me" },
                 Statistics = new UserStatistics
                 {

osu.Game/Audio/SampleInfo.cs

@@ -29,6 +29,11 @@ namespace osu.Game.Audio
         /// </summary>
         public string Name;
 
+        /// <summary>
+        /// An optional suffix to provide priority lookup. Falls back to non-suffixed <see cref="Name"/>.
+        /// </summary>
+        public string Suffix;
+
         /// <summary>
         /// The sample volume.
         /// </summary>
@@ -42,9 +47,16 @@ namespace osu.Game.Audio
             get
             {
                 if (!string.IsNullOrEmpty(Namespace))
+                {
+                    if (!string.IsNullOrEmpty(Suffix))
+                        yield return $"{Namespace}/{Bank}-{Name}{Suffix}";
                     yield return $"{Namespace}/{Bank}-{Name}";
+                }
 
-                yield return $"{Bank}-{Name}"; // Without namespace as a fallback even when we have a namespace
+                // check non-namespace as a fallback even when we have a namespace
+                if (!string.IsNullOrEmpty(Suffix))
+                    yield return $"{Bank}-{Name}{Suffix}";
+                yield return $"{Bank}-{Name}";
             }
         }
 

osu.Game/Beatmaps/BeatmapManager.cs

@@ -92,7 +92,7 @@ namespace osu.Game.Beatmaps
                 // by setting the model here, we can update the noline set id below.
                 b.BeatmapSet = model;
 
-                fetchAndPopulateOnlineIDs(b);
+                fetchAndPopulateOnlineIDs(b, model.Beatmaps);
             }
 
             // check if a set already exists with the same online id, delete if it does.
@@ -339,6 +339,8 @@ namespace osu.Game.Beatmaps
         {
             var beatmapInfos = new List<BeatmapInfo>();
 
+            bool invalidateOnlineIDs = false;
+
             foreach (var name in reader.Filenames.Where(f => f.EndsWith(".osu")))
             {
                 using (var raw = reader.GetStream(name))
@@ -355,10 +357,19 @@ namespace osu.Game.Beatmaps
                     beatmap.BeatmapInfo.Hash = ms.ComputeSHA2Hash();
                     beatmap.BeatmapInfo.MD5Hash = ms.ComputeMD5Hash();
 
-                    // check that no existing beatmap exists that is imported with the same online beatmap ID. if so, give it precedence.
-                    if (beatmap.BeatmapInfo.OnlineBeatmapID.HasValue && QueryBeatmap(b => b.OnlineBeatmapID.Value == beatmap.BeatmapInfo.OnlineBeatmapID.Value) != null)
+                    if (beatmap.BeatmapInfo.OnlineBeatmapID.HasValue)
+                    {
+                        var ourId = beatmap.BeatmapInfo.OnlineBeatmapID;
+
+                        // check that no existing beatmap in database exists that is imported with the same online beatmap ID. if so, give it precedence.
+                        if (QueryBeatmap(b => b.OnlineBeatmapID.Value == ourId) != null)
                             beatmap.BeatmapInfo.OnlineBeatmapID = null;
 
+                        // check that no other beatmap in this imported set has a conflicting online beatmap ID. If so, presume *all* are incorrect.
+                        if (beatmapInfos.Any(b => b.OnlineBeatmapID == ourId))
+                            invalidateOnlineIDs = true;
+                    }
+
                     RulesetInfo ruleset = rulesets.GetRuleset(beatmap.BeatmapInfo.RulesetID);
 
                     beatmap.BeatmapInfo.Ruleset = ruleset;
@@ -375,6 +386,9 @@ namespace osu.Game.Beatmaps
                 }
             }
 
+            if (invalidateOnlineIDs)
+                beatmapInfos.ForEach(b => b.OnlineBeatmapID = null);
+
             return beatmapInfos;
         }
 
@@ -382,9 +396,10 @@ namespace osu.Game.Beatmaps
         /// Query the API to populate mising OnlineBeatmapID / OnlineBeatmapSetID properties.
         /// </summary>
         /// <param name="beatmap">The beatmap to populate.</param>
+        /// <param name="otherBeatmaps">The other beatmaps contained within this set.</param>
         /// <param name="force">Whether to re-query if the provided beatmap already has populated values.</param>
         /// <returns>True if population was successful.</returns>
-        private bool fetchAndPopulateOnlineIDs(BeatmapInfo beatmap, bool force = false)
+        private bool fetchAndPopulateOnlineIDs(BeatmapInfo beatmap, IEnumerable<BeatmapInfo> otherBeatmaps, bool force = false)
         {
             if (!force && beatmap.OnlineBeatmapID != null && beatmap.BeatmapSet.OnlineBeatmapSetID != null)
                 return true;
@@ -404,6 +419,12 @@ namespace osu.Game.Beatmaps
 
                 Logger.Log($"Successfully mapped to {res.OnlineBeatmapSetID} / {res.OnlineBeatmapID}.", LoggingTarget.Database);
 
+                if (otherBeatmaps.Any(b => b.OnlineBeatmapID == res.OnlineBeatmapID))
+                {
+                    Logger.Log("Another beatmap in the same set already mapped to this ID. We'll skip adding it this time.", LoggingTarget.Database);
+                    return false;
+                }
+
                 beatmap.BeatmapSet.OnlineBeatmapSetID = res.OnlineBeatmapSetID;
                 beatmap.OnlineBeatmapID = res.OnlineBeatmapID;
                 return true;

osu.Game/Beatmaps/BeatmapMetadata.cs

@@ -14,7 +14,6 @@ namespace osu.Game.Beatmaps
     public class BeatmapMetadata : IEquatable<BeatmapMetadata>
     {
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-        [JsonIgnore]
         public int ID { get; set; }
 
         public string Title { get; set; }

osu.Game/Beatmaps/Drawables/DifficultyColouredContainer.cs

@@ -9,14 +9,14 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
-    public class DifficultyColouredContainer : Container, IHasAccentColour
+    public abstract class DifficultyColouredContainer : Container, IHasAccentColour
     {
         public Color4 AccentColour { get; set; }
 
         private readonly BeatmapInfo beatmap;
         private OsuColour palette;
 
-        public DifficultyColouredContainer(BeatmapInfo beatmap)
+        protected DifficultyColouredContainer(BeatmapInfo beatmap)
         {
             this.beatmap = beatmap;
         }

osu.Game/Beatmaps/Drawables/DifficultyIcon.cs

@@ -3,10 +3,14 @@
 
 using System;
 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.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using OpenTK;
+using OpenTK.Graphics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
@@ -14,7 +18,8 @@ namespace osu.Game.Beatmaps.Drawables
     {
         private readonly BeatmapInfo beatmap;
 
-        public DifficultyIcon(BeatmapInfo beatmap) : base(beatmap)
+        public DifficultyIcon(BeatmapInfo beatmap)
+            : base(beatmap)
         {
             if (beatmap == null)
                 throw new ArgumentNullException(nameof(beatmap));
@@ -28,16 +33,29 @@ namespace osu.Game.Beatmaps.Drawables
         {
             Children = new Drawable[]
             {
-                new SpriteIcon
+                new CircularContainer
                 {
+                    RelativeSizeAxes = Axes.Both,
+                    Scale = new Vector2(0.84f),
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
+                    Masking = true,
+                    EdgeEffect = new EdgeEffectParameters
+                    {
+                        Colour = Color4.Black.Opacity(0.08f),
+                        Type = EdgeEffectType.Shadow,
+                        Radius = 5,
+                    },
+                    Child = new Box
+                    {
                         RelativeSizeAxes = Axes.Both,
                         Colour = AccentColour,
-                    Icon = FontAwesome.fa_circle
+                    },
                 },
                 new ConstrainedIconContainer
                 {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
                     // the null coalesce here is only present to make unit tests work (ruleset dlls aren't copied correctly for testing at the moment)
                     Icon = beatmap.Ruleset?.CreateInstance().CreateIcon() ?? new SpriteIcon { Icon = FontAwesome.fa_question_circle_o }

osu.Game/Beatmaps/Formats/LegacyDecoder.cs

@@ -179,7 +179,7 @@ namespace osu.Game.Beatmaps.Formats
                 var baseInfo = base.ApplyTo(sampleInfo);
 
                 if (CustomSampleBank > 1)
-                    baseInfo.Name += CustomSampleBank;
+                    baseInfo.Suffix = CustomSampleBank.ToString();
 
                 return baseInfo;
             }

osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs

@@ -26,9 +26,9 @@ namespace osu.Game.Graphics.Containers
 
         protected readonly Bindable<OverlayActivation> OverlayActivationMode = new Bindable<OverlayActivation>(OverlayActivation.All);
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
             dependencies.CacheAs<IPreviewTrackOwner>(this);
             return dependencies;
         }

osu.Game/Graphics/Cursor/OsuTooltipContainer.cs

@@ -21,6 +21,8 @@ namespace osu.Game.Graphics.Cursor
         {
         }
 
+        protected override double AppearDelay => (1 - CurrentTooltip.Alpha) * base.AppearDelay; // reduce appear delay if the tooltip is already partly visible.
+
         public class OsuTooltip : Tooltip
         {
             private readonly Box background;

osu.Game/Online/API/Requests/Responses/APIScore.cs

@@ -63,7 +63,14 @@ namespace osu.Game.Online.API.Requests.Responses
         [JsonProperty(@"beatmapset")]
         private BeatmapMetadata metadata
         {
-            set => Beatmap.Metadata = value;
+            set
+            {
+                // extract the set ID to its correct place.
+                Beatmap.BeatmapSet = new BeatmapSetInfo { OnlineBeatmapSetID = value.ID };
+                value.ID = 0;
+
+                Beatmap.Metadata = value;
+            }
         }
 
         [JsonProperty(@"statistics")]

osu.Game/OsuGame.cs

@@ -122,8 +122,8 @@ namespace osu.Game
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent) =>
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent) =>
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         [BackgroundDependencyLoader]
         private void load(FrameworkConfigManager frameworkConfig)

osu.Game/OsuGameBase.cs

@@ -20,6 +20,7 @@ using osu.Game.Graphics.Cursor;
 using osu.Game.Online.API;
 using osu.Framework.Graphics.Performance;
 using osu.Framework.Graphics.Textures;
+using osu.Framework.Input;
 using osu.Framework.Logging;
 using osu.Game.Audio;
 using osu.Game.Database;
@@ -30,6 +31,7 @@ using osu.Game.IO;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
+using OpenTK.Input;
 using DebugUtils = osu.Game.Utils.DebugUtils;
 
 namespace osu.Game
@@ -93,11 +95,13 @@ namespace osu.Game
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent) =>
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent) =>
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         private DatabaseContextFactory contextFactory;
 
+        protected override UserInputManager CreateUserInputManager() => new OsuUserInputManager();
+
         [BackgroundDependencyLoader]
         private void load()
         {
@@ -267,5 +271,31 @@ namespace osu.Game
                 return copy;
             }
         }
+
+        private class OsuUserInputManager : UserInputManager
+        {
+            protected override MouseButtonEventManager CreateButtonManagerFor(MouseButton button)
+            {
+                switch (button)
+                {
+                    case MouseButton.Right:
+                        return new RightMouseManager(button);
+                }
+
+                return base.CreateButtonManagerFor(button);
+            }
+
+            private class RightMouseManager : MouseButtonEventManager
+            {
+                public RightMouseManager(MouseButton button)
+                    : base(button)
+                {
+                }
+
+                public override bool EnableDrag => true; // allow right-mouse dragging for absolute scroll in scroll containers.
+                public override bool EnableClick => false;
+                public override bool ChangeFocusOnClick => false;
+            }
+        }
     }
 }

osu.Game/Overlays/KeyBinding/KeyBindingRow.cs

@@ -102,6 +102,7 @@ namespace osu.Game.Overlays.KeyBinding
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
                     Margin = new MarginPadding(padding),
+                    Padding = new MarginPadding { Top = height },
                     Alpha = 0,
                     Colour = colours.YellowDark
                 }
@@ -267,7 +268,7 @@ namespace osu.Game.Overlays.KeyBinding
                 GetContainingInputManager().ChangeFocus(null);
 
             pressAKey.FadeOut(300, Easing.OutQuint);
-            pressAKey.Padding = new MarginPadding { Top = height, Bottom = -pressAKey.DrawHeight };
+            pressAKey.BypassAutoSizeAxes |= Axes.Y;
         }
 
         protected override void OnFocus(InputState state)
@@ -276,7 +277,7 @@ namespace osu.Game.Overlays.KeyBinding
             AutoSizeEasing = Easing.OutQuint;
 
             pressAKey.FadeIn(300, Easing.OutQuint);
-            pressAKey.Padding = new MarginPadding { Top = height };
+            pressAKey.BypassAutoSizeAxes &= ~Axes.Y;
 
             updateBindTarget();
             base.OnFocus(state);

osu.Game/Overlays/OnScreenDisplay.cs

@@ -14,6 +14,8 @@ using osu.Game.Graphics;
 using OpenTK;
 using OpenTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.Threading;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Sprites;
 
@@ -135,7 +137,7 @@ namespace osu.Game.Overlays
         /// <exception cref="InvalidOperationException">If <paramref name="configManager"/> is already being tracked from the same <paramref name="source"/>.</exception>
         public void BeginTracking(object source, ITrackableConfigManager configManager)
         {
-            if (configManager == null)　throw new ArgumentNullException(nameof(configManager));
+            if (configManager == null) throw new ArgumentNullException(nameof(configManager));
 
             if (trackedConfigManagers.ContainsKey((source, configManager)))
                 throw new InvalidOperationException($"{nameof(configManager)} is already registered.");
@@ -159,7 +161,7 @@ namespace osu.Game.Overlays
         /// <exception cref="InvalidOperationException">If <paramref name="configManager"/> is not being tracked from the same <see cref="source"/>.</exception>
         public void StopTracking(object source, ITrackableConfigManager configManager)
         {
-            if (configManager == null)　throw new ArgumentNullException(nameof(configManager));
+            if (configManager == null) throw new ArgumentNullException(nameof(configManager));
 
             if (!trackedConfigManagers.TryGetValue((source, configManager), out var existing))
                 throw new InvalidOperationException($"{nameof(configManager)} is not registered.");
@@ -181,7 +183,7 @@ namespace osu.Game.Overlays
                 if (string.IsNullOrEmpty(textLine3.Text))
                     textLine3.Text = "NO KEY BOUND";
 
-                Display(box);
+                DisplayTemporarily(box);
 
                 int optionCount = 0;
                 int selectedOption = -1;
@@ -213,15 +215,29 @@ namespace osu.Game.Overlays
             });
         }
 
-        protected virtual void Display(Drawable toDisplay)
+        private TransformSequence<Drawable> fadeIn;
+        private ScheduledDelegate fadeOut;
+
+        protected virtual void DisplayTemporarily(Drawable toDisplay)
         {
-            toDisplay.Animate(
+            // avoid starting a new fade-in if one is already active.
+            if (fadeIn == null)
+            {
+                fadeIn = toDisplay.Animate(
                     b => b.FadeIn(500, Easing.OutQuint),
                     b => b.ResizeHeightTo(height, 500, Easing.OutQuint)
-            ).Then(
-                b => b.FadeOutFromOne(1500, Easing.InQuint),
-                b => b.ResizeHeightTo(height_contracted, 1500, Easing.InQuint)
                 );
+
+                fadeIn.Finally(_ => fadeIn = null);
+            }
+
+            fadeOut?.Cancel();
+            fadeOut = Scheduler.AddDelayed(() =>
+            {
+                toDisplay.Animate(
+                    b => b.FadeOutFromOne(1500, Easing.InQuint),
+                    b => b.ResizeHeightTo(height_contracted, 1500, Easing.InQuint));
+            }, 500);
         }
 
         private class OptionLight : Container

osu.Game/Overlays/Profile/ProfileHeader.cs

@@ -158,6 +158,13 @@ namespace osu.Game.Overlays.Profile
                         }
                     }
                 },
+                new Box // this is a temporary workaround for incorrect masking behaviour of FillMode.Fill used in UserCoverBackground (see https://github.com/ppy/osu-framework/issues/1675)
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Height = 1,
+                    Y = cover_height,
+                    Colour = OsuColour.Gray(34),
+                },
                 infoTextLeft = new LinkFlowContainer(t => t.TextSize = 14)
                 {
                     X = UserProfileOverlay.CONTENT_X_MARGIN,
@@ -360,11 +367,6 @@ namespace osu.Game.Overlays.Profile
                 Text = text
             };
 
-            if (user.Age != null)
-            {
-                infoTextLeft.AddText($"{user.Age} years old ", boldItalic);
-            }
-
             if (user.Country != null)
             {
                 infoTextLeft.AddText("From ", lightText);

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

@@ -9,6 +9,7 @@ using osu.Framework.Localisation;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
+
 namespace osu.Game.Overlays.Profile.Sections
 {
     /// <summary>
@@ -32,7 +33,10 @@ namespace osu.Game.Overlays.Profile.Sections
         {
             Action = () =>
             {
-                if (beatmap.BeatmapSet?.OnlineBeatmapSetID != null) beatmapSetOverlay?.FetchAndShowBeatmapSet(beatmap.BeatmapSet.OnlineBeatmapSetID.Value);
+                if (beatmap.OnlineBeatmapID != null)
+                    beatmapSetOverlay?.FetchAndShowBeatmap(beatmap.OnlineBeatmapID.Value);
+                else if (beatmap.BeatmapSet?.OnlineBeatmapSetID != null)
+                    beatmapSetOverlay?.FetchAndShowBeatmapSet(beatmap.BeatmapSet.OnlineBeatmapSetID.Value);
             };
 
             Child = new FillFlowContainer

osu.Game/Overlays/Settings/RulesetSettingsSubsection.cs

@@ -3,6 +3,7 @@
 
 using osu.Framework.Allocation;
 using osu.Game.Rulesets;
+using osu.Game.Rulesets.Configuration;
 
 namespace osu.Game.Overlays.Settings
 {
@@ -14,6 +15,8 @@ namespace osu.Game.Overlays.Settings
     {
         private readonly Ruleset ruleset;
 
+        protected IRulesetConfigManager Config;
+
         protected RulesetSettingsSubsection(Ruleset ruleset)
         {
             this.ruleset = ruleset;
@@ -21,13 +24,13 @@ namespace osu.Game.Overlays.Settings
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
-            var config = dependencies.Get<RulesetConfigCache>().GetConfigFor(ruleset);
-            if (config != null)
-                dependencies.Cache(config);
+            Config = dependencies.Get<RulesetConfigCache>().GetConfigFor(ruleset);
+            if (Config != null)
+                dependencies.Cache(Config);
 
             return dependencies;
         }

osu.Game/Overlays/Toolbar/Toolbar.cs

@@ -50,7 +50,7 @@ namespace osu.Game.Overlays.Toolbar
                         {
                             Action = () => OnHome?.Invoke()
                         },
-                        new ToolbarModeSelector()
+                        new ToolbarRulesetSelector()
                     }
                 },
                 new FillFlowContainer

osu.Game/Overlays/Toolbar/ToolbarRulesetButton.cs

@@ -7,7 +7,7 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Overlays.Toolbar
 {
-    public class ToolbarModeButton : ToolbarButton
+    public class ToolbarRulesetButton : ToolbarButton
     {
         private RulesetInfo ruleset;
         public RulesetInfo Ruleset

osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs

@@ -16,18 +16,18 @@ using osu.Game.Rulesets;
 
 namespace osu.Game.Overlays.Toolbar
 {
-    public class ToolbarModeSelector : Container
+    public class ToolbarRulesetSelector : Container
     {
         private const float padding = 10;
 
         private readonly FillFlowContainer modeButtons;
         private readonly Drawable modeButtonLine;
-        private ToolbarModeButton activeButton;
+        private ToolbarRulesetButton activeButton;
 
         private RulesetStore rulesets;
         private readonly Bindable<RulesetInfo> ruleset = new Bindable<RulesetInfo>();
 
-        public ToolbarModeSelector()
+        public ToolbarRulesetSelector()
         {
             RelativeSizeAxes = Axes.Y;
 
@@ -73,7 +73,7 @@ namespace osu.Game.Overlays.Toolbar
             this.rulesets = rulesets;
             foreach (var r in rulesets.AvailableRulesets)
             {
-                modeButtons.Add(new ToolbarModeButton
+                modeButtons.Add(new ToolbarRulesetButton
                 {
                     Ruleset = r,
                     Action = delegate { ruleset.Value = r; }
@@ -115,7 +115,7 @@ namespace osu.Game.Overlays.Toolbar
 
         private void rulesetChanged(RulesetInfo ruleset)
         {
-            foreach (ToolbarModeButton m in modeButtons.Children.Cast<ToolbarModeButton>())
+            foreach (ToolbarRulesetButton m in modeButtons.Children.Cast<ToolbarRulesetButton>())
             {
                 bool isActive = m.Ruleset.ID == ruleset.ID;
                 m.Active = isActive;

osu.Game/Rulesets/UI/RulesetContainer.cs

@@ -70,7 +70,8 @@ namespace osu.Game.Rulesets.UI
 
         protected readonly Ruleset Ruleset;
 
-        private IRulesetConfigManager rulesetConfig;
+        protected IRulesetConfigManager Config { get; private set; }
+
         private OnScreenDisplay onScreenDisplay;
 
         /// <summary>
@@ -85,17 +86,17 @@ namespace osu.Game.Rulesets.UI
             Cursor = CreateCursor();
         }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
             onScreenDisplay = dependencies.Get<OnScreenDisplay>();
 
-            rulesetConfig = dependencies.Get<RulesetConfigCache>().GetConfigFor(Ruleset);
-            if (rulesetConfig != null)
+            Config = dependencies.Get<RulesetConfigCache>().GetConfigFor(Ruleset);
+            if (Config != null)
             {
-                dependencies.Cache(rulesetConfig);
-                onScreenDisplay?.BeginTracking(this, rulesetConfig);
+                dependencies.Cache(Config);
+                onScreenDisplay?.BeginTracking(this, Config);
             }
 
             return dependencies;
@@ -143,10 +144,10 @@ namespace osu.Game.Rulesets.UI
         {
             base.Dispose(isDisposing);
 
-            if (rulesetConfig != null)
+            if (Config != null)
             {
-                onScreenDisplay?.StopTracking(this, rulesetConfig);
-                rulesetConfig = null;
+                onScreenDisplay?.StopTracking(this, Config);
+                Config = null;
             }
         }
     }

osu.Game/Rulesets/UI/RulesetInputManager.cs

@@ -222,23 +222,16 @@ namespace osu.Game.Rulesets.UI
             mouseDisabled = config.GetBindable<bool>(OsuSetting.MouseDisableButtons);
         }
 
-        protected override void TransformState(InputState state)
+        protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
         {
-            base.TransformState(state);
-
-            // we don't want to transform the state if a replay is present (for now, at least).
-            if (replayInputHandler != null) return;
-
-            var mouse = state.Mouse as Framework.Input.MouseState;
-
-            if (mouse != null)
-            {
-                if (mouseDisabled.Value)
-                {
-                    mouse.SetPressed(MouseButton.Left, false);
-                    mouse.SetPressed(MouseButton.Right, false);
-                }
+            if (mouseDisabled.Value && (args.Button == MouseButton.Left || args.Button == MouseButton.Right)) return false;
+            return base.OnMouseDown(state, args);
         }
+
+        protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
+        {
+            if (!CurrentState.Mouse.IsPressed(args.Button)) return false;
+            return base.OnMouseUp(state, args);
         }
 
         #endregion

osu.Game/Screens/Edit/Editor.cs

@@ -42,8 +42,8 @@ namespace osu.Game.Screens.Edit
         private DependencyContainer dependencies;
         private GameHost host;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
-            => dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+            => dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours, GameHost host)

osu.Game/Screens/Menu/Button.cs

@@ -35,6 +35,12 @@ namespace osu.Game.Screens.Menu
         private readonly Box boxHoverLayer;
         private readonly SpriteIcon icon;
         private readonly string sampleName;
+
+        /// <summary>
+        /// The menu state for which we are visible for.
+        /// </summary>
+        public ButtonSystemState VisibleState = ButtonSystemState.TopLevel;
+
         private readonly Action clickAction;
         private readonly Key triggerKey;
         private SampleChannel sampleClick;
@@ -51,7 +57,7 @@ namespace osu.Game.Screens.Menu
             AutoSizeAxes = Axes.Both;
             Alpha = 0;
 
-            Vector2 boxSize = new Vector2(ButtonSystem.BUTTON_WIDTH + Math.Abs(extraWidth), ButtonSystem.BUTTON_AREA_HEIGHT);
+            Vector2 boxSize = new Vector2(ButtonSystem.BUTTON_WIDTH + Math.Abs(extraWidth), ButtonArea.BUTTON_AREA_HEIGHT);
 
             Children = new Drawable[]
             {
@@ -260,6 +266,7 @@ namespace osu.Game.Screens.Menu
                                 this.FadeOut(800);
                                 break;
                         }
+
                         break;
                     case ButtonState.Expanded:
                         const int expand_duration = 500;
@@ -276,6 +283,33 @@ namespace osu.Game.Screens.Menu
                 StateChanged?.Invoke(State);
             }
         }
+
+        public ButtonSystemState ButtonSystemState
+        {
+            set
+            {
+                ContractStyle = 0;
+
+                switch (value)
+                {
+                    case ButtonSystemState.Initial:
+                        State = ButtonState.Contracted;
+                        break;
+                    case ButtonSystemState.EnteringMode:
+                        ContractStyle = 1;
+                        State = ButtonState.Contracted;
+                        break;
+                    default:
+                        if (value == VisibleState)
+                            State = ButtonState.Expanded;
+                        else if (value < VisibleState)
+                            State = ButtonState.Contracted;
+                        else
+                            State = ButtonState.Exploded;
+                        break;
+                }
+            }
+        }
     }
 
     public enum ButtonState

osu.Game/Screens/Menu/ButtonArea.cs

@@ -0,0 +1,148 @@
+// 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;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using OpenTK;
+
+namespace osu.Game.Screens.Menu
+{
+    public class ButtonArea : Container, IStateful<Visibility>
+    {
+        public FlowContainerWithOrigin Flow;
+
+        protected override Container<Drawable> Content => Flow;
+
+        private readonly ButtonAreaBackground buttonAreaBackground;
+        private Visibility state;
+
+        public const float BUTTON_AREA_HEIGHT = 100;
+
+        public ButtonArea()
+        {
+            RelativeSizeAxes = Axes.Both;
+            InternalChild = new Container
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.X,
+                Size = new Vector2(1, BUTTON_AREA_HEIGHT),
+                Alpha = 0,
+                Children = new Drawable[]
+                {
+                    buttonAreaBackground = new ButtonAreaBackground(),
+                    Flow = new FlowContainerWithOrigin
+                    {
+                        Direction = FillDirection.Horizontal,
+                        Spacing = new Vector2(-ButtonSystem.WEDGE_WIDTH, 0),
+                        Anchor = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,
+                    }
+                }
+            };
+        }
+
+        public ButtonSystemState ButtonSystemState
+        {
+            set
+            {
+                switch (value)
+                {
+                    case ButtonSystemState.Exit:
+                    case ButtonSystemState.Initial:
+                    case ButtonSystemState.EnteringMode:
+                        State = Visibility.Hidden;
+                        break;
+                    case ButtonSystemState.TopLevel:
+                    case ButtonSystemState.Play:
+                        State = Visibility.Visible;
+                        break;
+                }
+
+                buttonAreaBackground.ButtonSystemState = value;
+            }
+        }
+
+        public Visibility State
+        {
+            get => state;
+            set
+            {
+                if (value == state) return;
+
+                state = value;
+                InternalChild.FadeTo(state == Visibility.Hidden ? 0 : 1, 300);
+                StateChanged?.Invoke(state);
+            }
+        }
+
+        public event Action<Visibility> StateChanged;
+
+        private class ButtonAreaBackground : Box, IStateful<ButtonAreaBackgroundState>
+        {
+            private ButtonAreaBackgroundState state;
+
+            public ButtonAreaBackground()
+            {
+                RelativeSizeAxes = Axes.Both;
+                Size = new Vector2(2, 1);
+                Colour = OsuColour.Gray(50);
+                Anchor = Anchor.Centre;
+                Origin = Anchor.Centre;
+            }
+
+            public ButtonAreaBackgroundState State
+            {
+                get => state;
+                set
+                {
+                    if (value == state) return;
+
+                    state = value;
+
+                    switch (state)
+                    {
+                        case ButtonAreaBackgroundState.Flat:
+                            this.ScaleTo(new Vector2(2, 0), 300, Easing.InSine);
+                            break;
+                        case ButtonAreaBackgroundState.Normal:
+                            this.ScaleTo(Vector2.One, 400, Easing.OutQuint);
+                            break;
+                    }
+
+                    StateChanged?.Invoke(state);
+                }
+            }
+
+            public ButtonSystemState ButtonSystemState
+            {
+                set
+                {
+                    switch (value)
+                    {
+                        default:
+                            State = ButtonAreaBackgroundState.Normal;
+                            break;
+                        case ButtonSystemState.Initial:
+                        case ButtonSystemState.Exit:
+                        case ButtonSystemState.EnteringMode:
+                            State = ButtonAreaBackgroundState.Flat;
+                            break;
+                    }
+                }
+            }
+
+            public event Action<ButtonAreaBackgroundState> StateChanged;
+        }
+
+        public enum ButtonAreaBackgroundState
+        {
+            Normal,
+            Flat
+        }
+    }
+}

osu.Game/Screens/Menu/ButtonSystem.cs

@@ -10,8 +10,8 @@ using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Bindings;
+using osu.Framework.Logging;
 using osu.Framework.Threading;
 using osu.Game.Graphics;
 using osu.Game.Input.Bindings;
@@ -22,9 +22,9 @@ using OpenTK.Input;
 
 namespace osu.Game.Screens.Menu
 {
-    public class ButtonSystem : Container, IStateful<MenuState>, IKeyBindingHandler<GlobalAction>
+    public class ButtonSystem : Container, IStateful<ButtonSystemState>, IKeyBindingHandler<GlobalAction>
     {
-        public event Action<MenuState> StateChanged;
+        public event Action<ButtonSystemState> StateChanged;
 
         public Action OnEdit;
         public Action OnExit;
@@ -33,12 +33,6 @@ namespace osu.Game.Screens.Menu
         public Action OnSettings;
         public Action OnMulti;
         public Action OnChart;
-        public Action OnTest;
-
-        private readonly FlowContainerWithOrigin buttonFlow;
-
-        //todo: make these non-internal somehow.
-        public const float BUTTON_AREA_HEIGHT = 100;
 
         public const float BUTTON_WIDTH = 140f;
         public const float WEDGE_WIDTH = 20;
@@ -54,18 +48,16 @@ namespace osu.Game.Screens.Menu
                 this.logo.Action = onOsuLogo;
 
                 // osuLogo.SizeForFlow relies on loading to be complete.
-                buttonFlow.Position = new Vector2(WEDGE_WIDTH * 2 - (BUTTON_WIDTH + this.logo.SizeForFlow / 4), 0);
+                buttonArea.Flow.Position = new Vector2(WEDGE_WIDTH * 2 - (BUTTON_WIDTH + this.logo.SizeForFlow / 4), 0);
 
                 updateLogoState();
             }
         }
 
         private readonly Drawable iconFacade;
-        private readonly Container buttonArea;
-        private readonly Box buttonAreaBackground;
+        private readonly ButtonArea buttonArea;
 
         private readonly Button backButton;
-        private readonly Button settingsButton;
 
         private readonly List<Button> buttonsTopLevel = new List<Button>();
         private readonly List<Button> buttonsPlay = new List<Button>();
@@ -76,57 +68,35 @@ namespace osu.Game.Screens.Menu
         {
             RelativeSizeAxes = Axes.Both;
 
-            Children = new Drawable[]
+            Child = buttonArea = new ButtonArea();
+
+            buttonArea.AddRange(new[]
             {
-                buttonArea = new Container
+                new Button(@"settings", string.Empty, FontAwesome.fa_gear, new Color4(85, 85, 85, 255), () => OnSettings?.Invoke(), -WEDGE_WIDTH, Key.O),
+                backButton = new Button(@"back", @"button-back-select", FontAwesome.fa_osu_left_o, new Color4(51, 58, 94, 255), () => State = ButtonSystemState.TopLevel, -WEDGE_WIDTH)
                 {
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    RelativeSizeAxes = Axes.X,
-                    Size = new Vector2(1, BUTTON_AREA_HEIGHT),
-                    Alpha = 0,
-                    Children = new Drawable[]
-                    {
-                        buttonAreaBackground = new Box
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Size = new Vector2(2, 1),
-                            Colour = OsuColour.Gray(50),
-                            Anchor = Anchor.Centre,
-                            Origin = Anchor.Centre,
+                    VisibleState = ButtonSystemState.Play,
                 },
-                        buttonFlow = new FlowContainerWithOrigin
-                        {
-                            Direction = FillDirection.Horizontal,
-                            Spacing = new Vector2(-WEDGE_WIDTH, 0),
-                            Anchor = Anchor.Centre,
-                            AutoSizeAxes = Axes.Both,
-                            Children = new[]
-                            {
-                                settingsButton = new Button(@"settings", string.Empty, FontAwesome.fa_gear, new Color4(85, 85, 85, 255), () => OnSettings?.Invoke(), -WEDGE_WIDTH, Key.O),
-                                backButton = new Button(@"back", string.Empty, FontAwesome.fa_osu_left_o, new Color4(51, 58, 94, 255), onBack, -WEDGE_WIDTH),
                 iconFacade = new Container //need a container to make the osu! icon flow properly.
                 {
-                                    Size = new Vector2(0, BUTTON_AREA_HEIGHT)
+                    Size = new Vector2(0, ButtonArea.BUTTON_AREA_HEIGHT)
                 }
-                            },
-                            CentreTarget = iconFacade
-                        }
-                    }
-                },
-            };
+            });
+
+            buttonArea.Flow.CentreTarget = iconFacade;
 
             buttonsPlay.Add(new Button(@"solo", @"button-solo-select", FontAwesome.fa_user, new Color4(102, 68, 204, 255), () => OnSolo?.Invoke(), WEDGE_WIDTH, Key.P));
             buttonsPlay.Add(new Button(@"multi", @"button-generic-select", FontAwesome.fa_users, new Color4(94, 63, 186, 255), () => OnMulti?.Invoke(), 0, Key.M));
             buttonsPlay.Add(new Button(@"chart", @"button-generic-select", FontAwesome.fa_osu_charts, new Color4(80, 53, 160, 255), () => OnChart?.Invoke()));
+            buttonsPlay.ForEach(b => b.VisibleState = ButtonSystemState.Play);
 
-            buttonsTopLevel.Add(new Button(@"play", @"button-play-select", FontAwesome.fa_osu_logo, new Color4(102, 68, 204, 255), onPlay, WEDGE_WIDTH, Key.P));
+            buttonsTopLevel.Add(new Button(@"play", @"button-play-select", FontAwesome.fa_osu_logo, new Color4(102, 68, 204, 255), () => State = ButtonSystemState.Play, WEDGE_WIDTH, Key.P));
             buttonsTopLevel.Add(new Button(@"osu!editor", @"button-generic-select", FontAwesome.fa_osu_edit_o, new Color4(238, 170, 0, 255), () => OnEdit?.Invoke(), 0, Key.E));
             buttonsTopLevel.Add(new Button(@"osu!direct", @"button-direct-select", FontAwesome.fa_osu_chevron_down_o, new Color4(165, 204, 0, 255), () => OnDirect?.Invoke(), 0, Key.D));
-            buttonsTopLevel.Add(new Button(@"exit", string.Empty, FontAwesome.fa_osu_cross_o, new Color4(238, 51, 153, 255), onExit, 0, Key.Q));
+            buttonsTopLevel.Add(new Button(@"exit", string.Empty, FontAwesome.fa_osu_cross_o, new Color4(238, 51, 153, 255), () => OnExit?.Invoke(), 0, Key.Q));
 
-            buttonFlow.AddRange(buttonsPlay);
-            buttonFlow.AddRange(buttonsTopLevel);
+            buttonArea.AddRange(buttonsPlay);
+            buttonArea.AddRange(buttonsTopLevel);
         }
 
         private OsuGame game;
@@ -152,14 +122,17 @@ namespace osu.Game.Screens.Menu
             }
         }
 
+        public bool OnReleased(GlobalAction action) => false;
+
         private bool goBack()
         {
             switch (State)
             {
-                case MenuState.TopLevel:
-                    State = MenuState.Initial;
+                case ButtonSystemState.TopLevel:
+                    State = ButtonSystemState.Initial;
+                    sampleBack?.Play();
                     return true;
-                case MenuState.Play:
+                case ButtonSystemState.Play:
                     backButton.TriggerOnClick();
                     return true;
                 default:
@@ -167,48 +140,30 @@ namespace osu.Game.Screens.Menu
             }
         }
 
-        public bool OnReleased(GlobalAction action) => false;
-
-        private void onPlay()
-        {
-            State = MenuState.Play;
-        }
-
-        private void onExit()
-        {
-            OnExit?.Invoke();
-        }
-
-        private void onBack()
-        {
-            sampleBack?.Play();
-            State = MenuState.TopLevel;
-        }
-
         private bool onOsuLogo()
         {
             switch (state)
             {
                 default:
                     return true;
-                case MenuState.Initial:
-                    State = MenuState.TopLevel;
+                case ButtonSystemState.Initial:
+                    State = ButtonSystemState.TopLevel;
                     return true;
-                case MenuState.TopLevel:
+                case ButtonSystemState.TopLevel:
                     buttonsTopLevel.First().TriggerOnClick();
                     return false;
-                case MenuState.Play:
+                case ButtonSystemState.Play:
                     buttonsPlay.First().TriggerOnClick();
                     return false;
             }
         }
 
-        private MenuState state;
+        private ButtonSystemState state = ButtonSystemState.Initial;
 
-        public override bool HandleKeyboardInput => state != MenuState.Exit;
-        public override bool HandleMouseInput => state != MenuState.Exit;
+        public override bool HandleKeyboardInput => state != ButtonSystemState.Exit;
+        public override bool HandleMouseInput => state != ButtonSystemState.Exit;
 
-        public MenuState State
+        public ButtonSystemState State
         {
             get { return state; }
 
@@ -216,71 +171,19 @@ namespace osu.Game.Screens.Menu
             {
                 if (state == value) return;
 
-                MenuState lastState = state;
+                ButtonSystemState lastState = state;
                 state = value;
 
-                //todo: figure a more elegant way of doing this.
-                buttonsTopLevel.ForEach(b => b.ContractStyle = 0);
-                buttonsPlay.ForEach(b => b.ContractStyle = 0);
-                backButton.ContractStyle = 0;
-                settingsButton.ContractStyle = 0;
-
                 updateLogoState(lastState);
 
-                using (buttonArea.BeginDelayedSequence(lastState == MenuState.Initial ? 150 : 0, true))
+                Logger.Log($"{nameof(ButtonSystem)}'s state changed from {lastState} to {state}");
+
+                using (buttonArea.BeginDelayedSequence(lastState == ButtonSystemState.Initial ? 150 : 0, true))
                 {
-                    switch (state)
-                    {
-                        case MenuState.Exit:
-                        case MenuState.Initial:
-                            buttonAreaBackground.ScaleTo(Vector2.One, 500, Easing.Out);
-                            buttonArea.FadeOut(300);
+                    buttonArea.ButtonSystemState = state;
 
-                            foreach (Button b in buttonsTopLevel)
-                                b.State = ButtonState.Contracted;
-
-                            foreach (Button b in buttonsPlay)
-                                b.State = ButtonState.Contracted;
-
-                            if (state != MenuState.Exit && lastState == MenuState.TopLevel)
-                                sampleBack?.Play();
-                            break;
-                        case MenuState.TopLevel:
-                            buttonAreaBackground.ScaleTo(Vector2.One, 200, Easing.Out);
-
-                            buttonArea.FadeIn(300);
-
-                            foreach (Button b in buttonsTopLevel)
-                                b.State = ButtonState.Expanded;
-
-                            foreach (Button b in buttonsPlay)
-                                b.State = ButtonState.Contracted;
-                            break;
-                        case MenuState.Play:
-                            foreach (Button b in buttonsTopLevel)
-                                b.State = ButtonState.Exploded;
-
-                            foreach (Button b in buttonsPlay)
-                                b.State = ButtonState.Expanded;
-                            break;
-                        case MenuState.EnteringMode:
-                            buttonAreaBackground.ScaleTo(new Vector2(2, 0), 300, Easing.InSine);
-
-                            buttonsTopLevel.ForEach(b => b.ContractStyle = 1);
-                            buttonsPlay.ForEach(b => b.ContractStyle = 1);
-                            backButton.ContractStyle = 1;
-                            settingsButton.ContractStyle = 1;
-
-                            foreach (Button b in buttonsTopLevel)
-                                b.State = ButtonState.Contracted;
-
-                            foreach (Button b in buttonsPlay)
-                                b.State = ButtonState.Contracted;
-                            break;
-                    }
-
-                    backButton.State = state == MenuState.Play ? ButtonState.Expanded : ButtonState.Contracted;
-                    settingsButton.State = state == MenuState.TopLevel ? ButtonState.Expanded : ButtonState.Contracted;
+                    foreach (var b in buttonArea.Children.OfType<Button>())
+                        b.ButtonSystemState = state;
                 }
 
                 StateChanged?.Invoke(State);
@@ -289,14 +192,14 @@ namespace osu.Game.Screens.Menu
 
         private ScheduledDelegate logoDelayedAction;
 
-        private void updateLogoState(MenuState lastState = MenuState.Initial)
+        private void updateLogoState(ButtonSystemState lastState = ButtonSystemState.Initial)
         {
             if (logo == null) return;
 
             switch (state)
             {
-                case MenuState.Exit:
-                case MenuState.Initial:
+                case ButtonSystemState.Exit:
+                case ButtonSystemState.Initial:
                     logoDelayedAction?.Cancel();
                     logoDelayedAction = Scheduler.AddDelayed(() =>
                         {
@@ -304,7 +207,7 @@ namespace osu.Game.Screens.Menu
 
                             if (game != null)
                             {
-                                game.OverlayActivationMode.Value = state == MenuState.Exit ? OverlayActivation.Disabled : OverlayActivation.All;
+                                game.OverlayActivationMode.Value = state == ButtonSystemState.Exit ? OverlayActivation.Disabled : OverlayActivation.All;
                                 game.Toolbar.Hide();
                             }
 
@@ -315,22 +218,22 @@ namespace osu.Game.Screens.Menu
                             logo.ScaleTo(1, 800, Easing.OutExpo);
                         }, buttonArea.Alpha * 150);
                     break;
-                case MenuState.TopLevel:
-                case MenuState.Play:
+                case ButtonSystemState.TopLevel:
+                case ButtonSystemState.Play:
                     switch (lastState)
                     {
-                        case MenuState.TopLevel: // coming from toplevel to play
+                        case ButtonSystemState.TopLevel: // coming from toplevel to play
                             break;
-                        case MenuState.Initial:
+                        case ButtonSystemState.Initial:
                             logo.ClearTransforms(targetMember: nameof(Position));
                             logo.RelativePositionAxes = Axes.None;
 
                             bool impact = logo.Scale.X > 0.6f;
 
-                            if (lastState == MenuState.Initial)
+                            if (lastState == ButtonSystemState.Initial)
                                 logo.ScaleTo(0.5f, 200, Easing.In);
 
-                            logo.MoveTo(logoTrackingPosition, lastState == MenuState.EnteringMode ? 0 : 200, Easing.In);
+                            logo.MoveTo(logoTrackingPosition, lastState == ButtonSystemState.EnteringMode ? 0 : 200, Easing.In);
 
                             logoDelayedAction?.Cancel();
                             logoDelayedAction = Scheduler.AddDelayed(() =>
@@ -356,7 +259,7 @@ namespace osu.Game.Screens.Menu
                     }
 
                     break;
-                case MenuState.EnteringMode:
+                case ButtonSystemState.EnteringMode:
                     logoTracking = true;
                     break;
             }
@@ -375,7 +278,7 @@ namespace osu.Game.Screens.Menu
 
             if (logo != null)
             {
-                if (logoTracking)
+                if (logoTracking && iconFacade.IsLoaded)
                     logo.Position = logoTrackingPosition;
 
                 iconFacade.Width = logo.SizeForFlow * 0.5f;
@@ -383,12 +286,12 @@ namespace osu.Game.Screens.Menu
         }
     }
 
-    public enum MenuState
+    public enum ButtonSystemState
     {
+        Exit,
         Initial,
         TopLevel,
         Play,
         EnteringMode,
-        Exit,
     }
 }

osu.Game/Screens/Menu/Disclaimer.cs

@@ -3,10 +3,9 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.Screens;
 using osu.Game.Graphics;
-using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.Containers;
 using OpenTK;
 using OpenTK.Graphics;
 using osu.Game.Overlays;
@@ -16,96 +15,89 @@ namespace osu.Game.Screens.Menu
     public class Disclaimer : OsuScreen
     {
         private Intro intro;
-        private readonly SpriteIcon icon;
+        private SpriteIcon icon;
         private Color4 iconColour;
+        private LinkFlowContainer textFlow;
 
         protected override bool HideOverlaysOnEnter => true;
         protected override OverlayActivation InitialOverlayActivationMode => OverlayActivation.Disabled;
 
         public override bool CursorVisible => false;
 
+        private const float icon_y = -0.09f;
+
         public Disclaimer()
         {
             ValidForResume = false;
-
-            Children = new Drawable[]
-            {
-                new FillFlowContainer
-                {
-                    AutoSizeAxes = Axes.Both,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Direction = FillDirection.Vertical,
-                    Spacing = new Vector2(0, 2),
-                    Children = new Drawable[]
-                    {
-                        icon = new SpriteIcon
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            Icon = FontAwesome.fa_warning,
-                            Size = new Vector2(30),
-                        },
-                        new OsuSpriteText
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            TextSize = 30,
-                            Text = "This is a development build",
-                            Margin = new MarginPadding
-                            {
-                                Bottom = 20
-                            },
-                        },
-                        new OsuSpriteText
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            Text = "Don't expect shit to work perfectly as this is very much a work in progress."
-                        },
-                        new OsuSpriteText
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            Text = "Don't report bugs because we are aware. Don't complain about missing features because we are adding them."
-                        },
-                        new OsuSpriteText
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            Text = "Sit back and enjoy. Visit discord.gg/ppy if you want to help out!",
-                            Margin = new MarginPadding { Bottom = 20 },
-                        },
-                        new OsuSpriteText
-                        {
-                            Anchor = Anchor.TopCentre,
-                            Origin = Anchor.TopCentre,
-                            TextSize = 12,
-                            Text = "oh and yes, you will get seizures.",
-                        },
-                    }
-                }
-            };
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            LoadComponentAsync(intro = new Intro());
+            Children = new Drawable[]
+            {
+                icon = new SpriteIcon
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Icon = FontAwesome.fa_warning,
+                    Size = new Vector2(30),
+                    RelativePositionAxes = Axes.Both,
+                    Y = icon_y,
+                },
+                textFlow = new LinkFlowContainer
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding(50),
+                    TextAnchor = Anchor.TopCentre,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Spacing = new Vector2(0, 2),
+                }
+            };
+
+            textFlow.AddText("This is an ", t =>
+            {
+                t.TextSize = 30;
+                t.Font = @"Exo2.0-Light";
+            });
+            textFlow.AddText("early development build", t =>
+            {
+                t.TextSize = 30;
+                t.Font = @"Exo2.0-SemiBold";
+            });
+
+            textFlow.AddParagraph("Don't expect everything to work perfectly.");
+            textFlow.AddParagraph("");
+            textFlow.AddParagraph("Detailed bug reports are welcomed via github issues.");
+            textFlow.AddParagraph("");
+
+            textFlow.AddText("Visit ");
+            textFlow.AddLink("discord.gg/ppy", "https://discord.gg/ppy");
+            textFlow.AddText(" if you want to help out or follow progress!");
 
             iconColour = colours.Yellow;
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            LoadComponentAsync(intro = new Intro());
+        }
+
         protected override void OnEntering(Screen last)
         {
             base.OnEntering(last);
 
-            icon.Delay(1500).FadeColour(iconColour, 200);
+            icon.Delay(1500).FadeColour(iconColour, 200, Easing.OutQuint);
+            icon.Delay(1500).MoveToY(icon_y * 1.1f, 100, Easing.OutCirc).Then().MoveToY(icon_y, 100, Easing.InCirc);
 
             Content
                 .FadeInFromZero(500)
                 .Then(5500)
                 .FadeOut(250)
+                .ScaleTo(0.9f, 250, Easing.InQuint)
                 .Finally(d => Push(intro));
         }
     }

osu.Game/Screens/Menu/MainMenu.cs

@@ -24,9 +24,9 @@ namespace osu.Game.Screens.Menu
     {
         private readonly ButtonSystem buttons;
 
-        protected override bool HideOverlaysOnEnter => buttons.State == MenuState.Initial;
+        protected override bool HideOverlaysOnEnter => buttons.State == ButtonSystemState.Initial;
 
-        protected override bool AllowBackButton => buttons.State != MenuState.Initial;
+        protected override bool AllowBackButton => buttons.State != ButtonSystemState.Initial;
 
         private readonly BackgroundScreenDefault background;
         private Screen songSelect;
@@ -123,7 +123,7 @@ namespace osu.Game.Screens.Menu
 
             if (resuming)
             {
-                buttons.State = MenuState.TopLevel;
+                buttons.State = ButtonSystemState.TopLevel;
 
                 const float length = 300;
 
@@ -155,7 +155,7 @@ namespace osu.Game.Screens.Menu
 
             const float length = 400;
 
-            buttons.State = MenuState.EnteringMode;
+            buttons.State = ButtonSystemState.EnteringMode;
 
             Content.FadeOut(length, Easing.InSine);
             Content.MoveTo(new Vector2(-800, 0), length, Easing.InSine);
@@ -175,7 +175,7 @@ namespace osu.Game.Screens.Menu
 
         protected override bool OnExiting(Screen next)
         {
-            buttons.State = MenuState.Exit;
+            buttons.State = ButtonSystemState.Exit;
             Content.FadeOut(3000);
             return base.OnExiting(next);
         }

osu.Game/Screens/Menu/OsuLogo.cs

@@ -19,6 +19,7 @@ using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using OpenTK;
 using OpenTK.Graphics;
+using OpenTK.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -345,12 +346,16 @@ namespace osu.Game.Screens.Menu
 
         protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
         {
+            if (args.Button != MouseButton.Left) return false;
+
             logoBounceContainer.ScaleTo(0.9f, 1000, Easing.Out);
             return true;
         }
 
         protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
         {
+            if (args.Button != MouseButton.Left) return false;
+
             logoBounceContainer.ScaleTo(1f, 500, Easing.OutElastic);
             return true;
         }

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

@@ -46,6 +46,8 @@ namespace osu.Game.Screens.Select.Leaderboards
         public void UpdateRank(ScoreRank newRank)
         {
             Rank = newRank;
+
+            if (IsLoaded)
                 updateTexture();
         }
     }

osu.Game/Screens/Select/SongSelect.cs

@@ -69,8 +69,8 @@ namespace osu.Game.Screens.Select
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
-            => dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+            => dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         protected SongSelect()
         {
@@ -138,7 +138,11 @@ namespace osu.Game.Screens.Select
                                 Height = filter_height,
                                 FilterChanged = c => Carousel.Filter(c),
                                 Background = { Width = 2 },
-                                Exit = Exit,
+                                Exit = () =>
+                                {
+                                    if (IsCurrentScreen)
+                                        Exit();
+                                },
                             },
                         }
                     },
@@ -189,8 +193,6 @@ namespace osu.Game.Screens.Select
             dependencies.CacheAs(Ruleset);
             dependencies.CacheAs<IBindable<RulesetInfo>>(Ruleset);
 
-            base.Ruleset.ValueChanged += r => updateSelectedBeatmap(beatmapNoDebounce);
-
             if (Footer != null)
             {
                 Footer.AddButton(@"random", colours.Green, triggerRandom, Key.F2);
@@ -218,6 +220,12 @@ namespace osu.Game.Screens.Select
             Beatmap.BindValueChanged(workingBeatmapChanged);
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            base.Ruleset.ValueChanged += r => updateSelectedBeatmap(beatmapNoDebounce);
+        }
+
         public void Edit(BeatmapInfo beatmap)
         {
             Beatmap.Value = beatmaps.GetWorkingBeatmap(beatmap, Beatmap.Value);
@@ -231,6 +239,10 @@ namespace osu.Game.Screens.Select
         /// <param name="performStartAction">Whether to trigger <see cref="OnStart"/>.</param>
         public void FinaliseSelection(BeatmapInfo beatmap = null, bool performStartAction = true)
         {
+            // avoid attempting to continue before a selection has been obtained.
+            // this could happen via a user interaction while the carousel is still in a loading state.
+            if (Carousel.SelectedBeatmap == null) return;
+
             // if we have a pending filter operation, we want to run it now.
             // it could change selection (ie. if the ruleset has been changed).
             Carousel.FlushPendingFilterOperations();

osu.Game/Screens/Tournament/Drawings.cs

@@ -49,8 +49,8 @@ namespace osu.Game.Screens.Tournament
 
         private DependencyContainer dependencies;
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent) =>
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent) =>
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         [BackgroundDependencyLoader]
         private void load(TextureStore textures, Storage storage)

osu.Game/Skinning/LocalSkinOverrideContainer.cs

@@ -71,9 +71,9 @@ namespace osu.Game.Skinning
 
         private void onSourceChanged() => SourceChanged?.Invoke();
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
             fallbackSource = dependencies.Get<ISkinSource>();
             dependencies.CacheAs<ISkinSource>(this);

osu.Game/Storyboards/Drawables/DrawableStoryboard.cs

@@ -36,8 +36,8 @@ namespace osu.Game.Storyboards.Drawables
         public override bool RemoveCompletedTransforms => false;
 
         private DependencyContainer dependencies;
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent) =>
-            dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent) =>
+            dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
         public DrawableStoryboard(Storyboard storyboard)
         {

osu.Game/Storyboards/Drawables/DrawableStoryboardSample.cs

@@ -0,0 +1,69 @@
+// 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.IO;
+using osu.Framework.Allocation;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+
+namespace osu.Game.Storyboards.Drawables
+{
+    public class DrawableStoryboardSample : Component
+    {
+        /// <summary>
+        /// The amount of time allowable beyond the start time of the sample, for the sample to start.
+        /// </summary>
+        private const double allowable_late_start = 100;
+
+        private readonly StoryboardSample sample;
+        private SampleChannel channel;
+
+        public override bool RemoveWhenNotAlive => false;
+
+        public DrawableStoryboardSample(StoryboardSample sample)
+        {
+            this.sample = sample;
+            LifetimeStart = sample.Time;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(IBindableBeatmap beatmap)
+        {
+            // Try first with the full name, then attempt with no path
+            channel = beatmap.Value.Skin.GetSample(sample.Path) ?? beatmap.Value.Skin.GetSample(Path.ChangeExtension(sample.Path, null));
+
+            if (channel != null)
+                channel.Volume.Value = sample.Volume / 100;
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            // TODO: this logic will need to be consolidated with other game samples like hitsounds.
+            if (Time.Current < sample.Time)
+            {
+                // We've rewound before the start time of the sample
+                channel?.Stop();
+
+                // In the case that the user fast-forwards to a point far beyond the start time of the sample,
+                // we want to be able to fall into the if-conditional below (therefore we must not have a life time end)
+                LifetimeStart = sample.Time;
+                LifetimeEnd = double.MaxValue;
+            }
+            else if (Time.Current - Time.Elapsed < sample.Time)
+            {
+                // We've passed the start time of the sample. We only play the sample if we're within an allowable range
+                // from the sample's start, to reduce layering if we've been fast-forwarded far into the future
+                if (Time.Current - sample.Time < allowable_late_start)
+                    channel?.Play();
+
+                // In the case that the user rewinds to a point far behind the start time of the sample,
+                // we want to be able to fall into the if-conditional above (therefore we must not have a life time start)
+                LifetimeStart = double.MinValue;
+                LifetimeEnd = sample.Time;
+            }
+        }
+    }
+}

osu.Game/Storyboards/StoryboardSample.cs

@@ -2,14 +2,14 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Framework.Graphics;
-using System;
+using osu.Game.Storyboards.Drawables;
 
 namespace osu.Game.Storyboards
 {
     public class StoryboardSample : IStoryboardElement
     {
         public string Path { get; set; }
-        public bool IsDrawable => false;
+        public bool IsDrawable => true;
 
         public double Time;
         public float Volume;
@@ -21,9 +21,6 @@ namespace osu.Game.Storyboards
             Volume = volume;
         }
 
-        public Drawable CreateDrawable()
-        {
-            throw new InvalidOperationException();
-        }
+        public Drawable CreateDrawable() => new DrawableStoryboardSample(this);
     }
 }

osu.Game/Tests/Visual/EditorClockTestCase.cs

@@ -25,9 +25,9 @@ namespace osu.Game.Tests.Visual
             Clock = new EditorClock(new ControlPointInfo(), 5000, BeatDivisor) { IsCoupled = false };
         }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            var dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
             dependencies.Cache(BeatDivisor);
             dependencies.CacheAs<IFrameBasedClock>(Clock);

osu.Game/Tests/Visual/OsuTestCase.cs

@@ -20,9 +20,9 @@ namespace osu.Game.Tests.Visual
 
         protected DependencyContainer Dependencies { get; private set; }
 
-        protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent)
+        protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
         {
-            Dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
+            Dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
             Dependencies.CacheAs<BindableBeatmap>(beatmap);
             Dependencies.CacheAs<IBindableBeatmap>(beatmap);

osu.Game/Users/Country.cs

@@ -42,6 +42,8 @@ namespace osu.Game.Users
                     return;
 
                 country = value;
+
+                if (IsLoaded)
                     sprite.Texture = getFlagTexture();
             }
         }

osu.Game/Users/User.cs

@@ -23,9 +23,6 @@ namespace osu.Game.Users
 
         public Bindable<UserStatus> Status = new Bindable<UserStatus>();
 
-        [JsonProperty(@"age")]
-        public int? Age;
-
         //public Team Team;
 
         [JsonProperty(@"profile_colour")]

osu.Game/osu.Game.csproj

@@ -14,11 +14,11 @@
     <ProjectReference Include="..\osu-resources\osu.Game.Resources\osu.Game.Resources.csproj" />
   </ItemGroup>
   <ItemGroup Label="Package References">
-    <PackageReference Include="Humanizer" Version="2.3.3" />
+    <PackageReference Include="Humanizer" Version="2.4.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.1.1" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-    <PackageReference Include="ppy.osu.Framework" Version="2018.705.0" />
+    <PackageReference Include="ppy.osu.Framework" Version="2018.712.0" />
     <PackageReference Include="SharpCompress" Version="0.17.1" />
     <PackageReference Include="NUnit" Version="3.10.1" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />

osu.sln.DotSettings

@@ -23,6 +23,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ClassWithVirtualMembersNeverInherited_002EGlobal/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=CollectionNeverQueried_002EGlobal/@EntryIndexedValue">SUGGESTION</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=CollectionNeverQueried_002ELocal/@EntryIndexedValue">HINT</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=CommentTypo/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=CompareOfFloatsByEqualityOperator/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertClosureToMethodGroup/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConvertIfDoToWhile/@EntryIndexedValue">WARNING</s:String>
@@ -43,6 +44,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=FieldCanBeMadeReadOnly_002EGlobal/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=FieldCanBeMadeReadOnly_002ELocal/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ForCanBeConvertedToForeach/@EntryIndexedValue">WARNING</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=IdentifierTypo/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ImpureMethodCallOnReadonlyValueField/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InconsistentNaming/@EntryIndexedValue">ERROR</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=InheritdocConsiderUsage/@EntryIndexedValue">HINT</s:String>
@@ -133,6 +135,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ReplaceWithSingleOrDefault_002E2/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ReplaceWithSingleOrDefault_002E3/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ReplaceWithSingleOrDefault_002E4/@EntryIndexedValue">WARNING</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=StringLiteralTypo/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=SuggestVarOrType_005FBuiltInTypes/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=SuggestVarOrType_005FSimpleTypes/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=SwitchStatementMissingSomeCases/@EntryIndexedValue">DO_NOT_SHOW</s:String>
@@ -666,4 +669,22 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EAlwaysTreatStructAsNotReorderableMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002ECSharpPlaceAttributeOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateBlankLinesAroundFieldToBlankLinesAroundProperty/@EntryIndexedValue">True</s:Boolean>
-	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateThisQualifierSettings/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
+	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateThisQualifierSettings/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Beatmap/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=beatmaps/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=beatmap_0027s/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=bindable/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Catmull/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Drawables/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=gameplay/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=hitobjects/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=keymods/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Kiai/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Leaderboard/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Leaderboards/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Playfield/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=resampler/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=ruleset/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=rulesets/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Taiko/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Unranked/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>