Merge branch 'master' into mania-hitobject-object-conversion

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

@@ -140,6 +140,26 @@ namespace osu.Game.Rulesets.Mania.Judgements
             Miss = BeatmapDifficulty.DifficultyRange(difficulty, miss_max, miss_mid, miss_min);
         }
 
+        /// <summary>
+        /// Retrieves the hit result for a time offset.
+        /// </summary>
+        /// <param name="hitOffset">The time offset.</param>
+        /// <returns>The hit result, or null if the time offset results in a miss.</returns>
+        public ManiaHitResult? ResultFor(double hitOffset)
+        {
+            if (hitOffset <= Perfect / 2)
+                return ManiaHitResult.Perfect;
+            if (hitOffset <= Great / 2)
+                return ManiaHitResult.Great;
+            if (hitOffset <= Good / 2)
+                return ManiaHitResult.Good;
+            if (hitOffset <= Ok / 2)
+                return ManiaHitResult.Ok;
+            if (hitOffset <= Bad / 2)
+                return ManiaHitResult.Bad;
+            return null;
+        }
+
         /// <summary>
         /// Constructs new hit windows which have been multiplied by a value.
         /// </summary>

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

@@ -0,0 +1,21 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.ComponentModel;
+
+namespace osu.Game.Rulesets.Mania.Judgements
+{
+    public enum ManiaHitResult
+    {
+        [Description("PERFECT")]
+        Perfect,
+        [Description("GREAT")]
+        Great,
+        [Description("GOOD")]
+        Good,
+        [Description("OK")]
+        Ok,
+        [Description("BAD")]
+        Bad
+    }
+}

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

@@ -10,5 +10,10 @@ namespace osu.Game.Rulesets.Mania.Judgements
         public override string ResultString => string.Empty;
 
         public override string MaxResultString => string.Empty;
+
+        /// <summary>
+        /// The hit result.
+        /// </summary>
+        public ManiaHitResult ManiaResult;
     }
 }

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

@@ -5,6 +5,8 @@ using osu.Game.Rulesets.Objects.Drawables;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using OpenTK.Graphics;
+using osu.Framework.Configuration;
+using OpenTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -14,8 +16,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         private readonly BodyPiece bodyPiece;
         private readonly NotePiece tailPiece;
 
-        public DrawableHoldNote(HoldNote hitObject)
+        public DrawableHoldNote(HoldNote hitObject, Bindable<Key> key = null)
-            : base(hitObject)
+            : base(hitObject, key)
         {
             RelativeSizeAxes = Axes.Both;
             Height = (float)HitObject.Duration;

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

@@ -2,6 +2,8 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -11,13 +13,21 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     public abstract class DrawableManiaHitObject<TObject> : DrawableHitObject<ManiaHitObject, ManiaJudgement>
         where TObject : ManiaHitObject
     {
+        /// <summary>
+        /// The key that will trigger input for this hit object.
+        /// </summary>
+        protected Bindable<Key> Key { get; private set; } = new Bindable<Key>();
+
         public new TObject HitObject;
 
-        protected DrawableManiaHitObject(TObject hitObject)
+        protected DrawableManiaHitObject(TObject hitObject, Bindable<Key> key = null)
             : base(hitObject)
         {
             HitObject = hitObject;
 
+            if (key != null)
+                Key.BindTo(key);
+
             RelativePositionAxes = Axes.Y;
             Y = (float)HitObject.StartTime;
         }

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

@@ -2,6 +2,8 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -12,8 +14,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
     {
         private readonly NotePiece headPiece;
 
-        public DrawableNote(Note hitObject)
+        public DrawableNote(Note hitObject, Bindable<Key> key = null)
-            : base(hitObject)
+            : base(hitObject, key)
         {
             RelativeSizeAxes = Axes.Both;
             Height = 100;

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

@@ -31,7 +31,7 @@ namespace osu.Game.Rulesets.Mania.Objects
         /// <summary>
         /// The key-release hit windows for this hold note.
         /// </summary>
-        protected HitWindows ReleaseHitWindows = new HitWindows();
+        public HitWindows ReleaseHitWindows { get; protected set; } = new HitWindows();
 
         public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
         {

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

@@ -15,7 +15,7 @@ namespace osu.Game.Rulesets.Mania.Objects
         /// <summary>
         /// The key-press hit window for this note.
         /// </summary>
-        protected HitWindows HitWindows = new HitWindows();
+        public HitWindows HitWindows { get; protected set; } = new HitWindows();
 
         public override void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
         {

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

@@ -22,5 +22,12 @@ namespace osu.Game.Rulesets.Mania.Scoring
         protected override void OnNewJudgement(ManiaJudgement judgement)
         {
         }
+
+        protected override void Reset()
+        {
+            base.Reset();
+
+            Health.Value = 1;
+        }
     }
 }

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

@@ -18,6 +18,8 @@ using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Judgements;
 using osu.Game.Beatmaps.Timing;
+using System;
+using osu.Framework.Configuration;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -33,7 +35,10 @@ namespace osu.Game.Rulesets.Mania.UI
         private const float column_width = 45;
         private const float special_column_width = 70;
 
-        public Key Key;
+        /// <summary>
+        /// The key that will trigger input actions for this column and hit objects contained inside it.
+        /// </summary>
+        public Bindable<Key> Key = new Bindable<Key>();
 
         private readonly Box background;
         private readonly Container hitTargetBar;
@@ -95,6 +100,12 @@ namespace osu.Game.Rulesets.Mania.UI
                             Name = "Hit objects",
                             RelativeSizeAxes = Axes.Both,
                         },
+                        // For column lighting, we need to capture input events before the notes
+                        new InputTarget
+                        {
+                            KeyDown = onKeyDown,
+                            KeyUp = onKeyUp
+                        }
                     }
                 },
                 new Container
@@ -178,12 +189,9 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> hitObject)
+        public void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> hitObject) => ControlPointContainer.Add(hitObject);
-        {
-            ControlPointContainer.Add(hitObject);
-        }
 
-        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        private bool onKeyDown(InputState state, KeyDownEventArgs args)
         {
             if (args.Repeat)
                 return false;
@@ -197,7 +205,7 @@ namespace osu.Game.Rulesets.Mania.UI
             return false;
         }
 
-        protected override bool OnKeyUp(InputState state, KeyUpEventArgs args)
+        private bool onKeyUp(InputState state, KeyUpEventArgs args)
         {
             if (args.Key == Key)
             {
@@ -207,5 +215,24 @@ namespace osu.Game.Rulesets.Mania.UI
 
             return false;
         }
+
+        /// <summary>
+        /// This is a simple container which delegates various input events that have to be captured before the notes.
+        /// </summary>
+        private class InputTarget : Container
+        {
+            public Func<InputState, KeyDownEventArgs, bool> KeyDown;
+            public Func<InputState, KeyUpEventArgs, bool> KeyUp;
+
+            public InputTarget()
+            {
+                RelativeSizeAxes = Axes.Both;
+                AlwaysPresent = true;
+                Alpha = 0;
+            }
+
+            protected override bool OnKeyDown(InputState state, KeyDownEventArgs args) => KeyDown?.Invoke(state, args) ?? false;
+            protected override bool OnKeyUp(InputState state, KeyUpEventArgs args) => KeyUp?.Invoke(state, args) ?? false;
+        }
     }
 }

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

@@ -4,6 +4,8 @@
 using System;
 using System.Linq;
 using OpenTK;
+using OpenTK.Input;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Timing;
@@ -76,13 +78,19 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected override DrawableHitObject<ManiaHitObject, ManiaJudgement> GetVisualRepresentation(ManiaHitObject h)
         {
+            var maniaPlayfield = Playfield as ManiaPlayfield;
+            if (maniaPlayfield == null)
+                return null;
+
+            Bindable<Key> key = maniaPlayfield.Columns.ElementAt(h.Column).Key;
+
             var holdNote = h as HoldNote;
             if (holdNote != null)
-                return new DrawableHoldNote(holdNote);
+                return new DrawableHoldNote(holdNote, key);
 
             var note = h as Note;
             if (note != null)
-                return new DrawableNote(note);
+                return new DrawableNote(note, key);
 
             return null;
         }

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

@@ -55,7 +55,8 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public readonly FlowContainer<Column> Columns;
+        private readonly FlowContainer<Column> columns;
+        public IEnumerable<Column> Columns => columns.Children;
 
         private readonly ControlPointContainer barlineContainer;
 
@@ -87,7 +88,7 @@ namespace osu.Game.Rulesets.Mania.UI
                             RelativeSizeAxes = Axes.Both,
                             Colour = Color4.Black
                         },
-                        Columns = new FillFlowContainer<Column>
+                        columns = new FillFlowContainer<Column>
                         {
                             Name = "Columns",
                             RelativeSizeAxes = Axes.Y,
@@ -114,7 +115,7 @@ namespace osu.Game.Rulesets.Mania.UI
             };
 
             for (int i = 0; i < columnCount; i++)
-                Columns.Add(new Column(timingChanges));
+                columns.Add(new Column(timingChanges));
 
             TimeSpan = time_span_default;
         }
@@ -133,17 +134,17 @@ namespace osu.Game.Rulesets.Mania.UI
             // Set the special column + colour + key
             for (int i = 0; i < columnCount; i++)
             {
-                Column column = Columns.Children.ElementAt(i);
+                Column column = Columns.ElementAt(i);
                 column.IsSpecial = isSpecialColumn(i);
 
                 if (!column.IsSpecial)
                     continue;
 
-                column.Key = Key.Space;
+                column.Key.Value = Key.Space;
                 column.AccentColour = specialColumnColour;
             }
 
-            var nonSpecialColumns = Columns.Children.Where(c => !c.IsSpecial).ToList();
+            var nonSpecialColumns = Columns.Where(c => !c.IsSpecial).ToList();
 
             // We'll set the colours of the non-special columns in a separate loop, because the non-special
             // column colours are mirrored across their centre and special styles mess with this
@@ -162,11 +163,11 @@ namespace osu.Game.Rulesets.Mania.UI
 
                 int keyOffset = default_keys.Length / 2 - nonSpecialColumns.Count / 2 + i;
                 if (keyOffset >= 0 && keyOffset < default_keys.Length)
-                    column.Key = default_keys[keyOffset];
+                    column.Key.Value = default_keys[keyOffset];
                 else
                     // There is no default key defined for this column. Let's set this to Unknown for now
                     // however note that this will be gone after bindings are in place
-                    column.Key = Key.Unknown;
+                    column.Key.Value = Key.Unknown;
             }
         }
 
@@ -189,7 +190,7 @@ namespace osu.Game.Rulesets.Mania.UI
             }
         }
 
-        public override void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> h) => Columns.Children.ElementAt(h.HitObject.Column).Add(h);
+        public override void Add(DrawableHitObject<ManiaHitObject, ManiaJudgement> h) => Columns.ElementAt(h.HitObject.Column).Add(h);
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
@@ -225,7 +226,7 @@ namespace osu.Game.Rulesets.Mania.UI
                 timeSpan = MathHelper.Clamp(timeSpan, time_span_min, time_span_max);
 
                 barlineContainer.TimeSpan = value;
-                Columns.Children.ForEach(c => c.ControlPointContainer.TimeSpan = value);
+                Columns.ForEach(c => c.ControlPointContainer.TimeSpan = value);
             }
         }
 

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

@@ -57,6 +57,7 @@
     <Compile Include="Beatmaps\Patterns\Pattern.cs" />
     <Compile Include="MathUtils\FastRandom.cs" />
     <Compile Include="Judgements\HitWindows.cs" />
+    <Compile Include="Judgements\ManiaHitResult.cs" />
     <Compile Include="Judgements\ManiaJudgement.cs" />
     <Compile Include="ManiaDifficultyCalculator.cs" />
     <Compile Include="Objects\Drawables\DrawableHoldNote.cs" />

osu.Game/Graphics/Containers/SectionsContainer.cs

@@ -0,0 +1,171 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Graphics.Containers
+{
+    /// <summary>
+    /// A container that can scroll to each section inside it.
+    /// </summary>
+    public class SectionsContainer : Container
+    {
+        private Drawable expandableHeader, fixedHeader, footer;
+        public readonly ScrollContainer ScrollContainer;
+        private readonly Container<Drawable> sectionsContainer;
+
+        public Drawable ExpandableHeader
+        {
+            get { return expandableHeader; }
+            set
+            {
+                if (value == expandableHeader) return;
+
+                if (expandableHeader != null)
+                    Remove(expandableHeader);
+                expandableHeader = value;
+                if (value == null) return;
+
+                Add(expandableHeader);
+                lastKnownScroll = float.NaN;
+            }
+        }
+
+        public Drawable FixedHeader
+        {
+            get { return fixedHeader; }
+            set
+            {
+                if (value == fixedHeader) return;
+
+                if (fixedHeader != null)
+                    Remove(fixedHeader);
+                fixedHeader = value;
+                if (value == null) return;
+
+                Add(fixedHeader);
+                lastKnownScroll = float.NaN;
+            }
+        }
+
+        public Drawable Footer
+        {
+            get { return footer; }
+            set
+            {
+                if (value == footer) return;
+
+                if (footer != null)
+                    ScrollContainer.Remove(footer);
+                footer = value;
+                if (value == null) return;
+
+                footer.Anchor |= Anchor.y2;
+                footer.Origin |= Anchor.y2;
+                ScrollContainer.Add(footer);
+                lastKnownScroll = float.NaN;
+            }
+        }
+
+        public Bindable<Drawable> SelectedSection { get; } = new Bindable<Drawable>();
+
+        protected virtual Container<Drawable> CreateScrollContentContainer()
+            => new FillFlowContainer
+            {
+                Direction = FillDirection.Vertical,
+                AutoSizeAxes = Axes.Both
+            };
+
+        private List<Drawable> sections = new List<Drawable>();
+        public IEnumerable<Drawable> Sections
+        {
+            get { return sections; }
+            set
+            {
+                foreach (var section in sections)
+                    sectionsContainer.Remove(section);
+
+                sections = value.ToList();
+                if (sections.Count == 0) return;
+
+                sectionsContainer.Add(sections);
+                SelectedSection.Value = sections[0];
+                lastKnownScroll = float.NaN;
+            }
+        }
+
+        private float headerHeight, footerHeight;
+        private readonly MarginPadding originalSectionsMargin;
+        private void updateSectionsMargin()
+        {
+            if (sections.Count == 0) return;
+
+            var newMargin = originalSectionsMargin;
+            newMargin.Top += headerHeight;
+            newMargin.Bottom += footerHeight;
+
+            sectionsContainer.Margin = newMargin;
+        }
+
+        public SectionsContainer()
+        {
+            Add(ScrollContainer = new ScrollContainer()
+            {
+                RelativeSizeAxes = Axes.Both,
+                Masking = false,
+                Children = new Drawable[] { sectionsContainer = CreateScrollContentContainer() }
+            });
+            originalSectionsMargin = sectionsContainer.Margin;
+        }
+
+        private float lastKnownScroll;
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            float headerH = (ExpandableHeader?.LayoutSize.Y ?? 0) + (FixedHeader?.LayoutSize.Y ?? 0);
+            float footerH = Footer?.LayoutSize.Y ?? 0;
+            if (headerH != headerHeight || footerH != footerHeight)
+            {
+                headerHeight = headerH;
+                footerHeight = footerH;
+                updateSectionsMargin();
+            }
+
+            float currentScroll = Math.Max(0, ScrollContainer.Current);
+            if (currentScroll != lastKnownScroll)
+            {
+                lastKnownScroll = currentScroll;
+
+                if (expandableHeader != null && fixedHeader != null)
+                {
+                    float offset = Math.Min(expandableHeader.LayoutSize.Y, currentScroll);
+
+                    expandableHeader.Y = -offset;
+                    fixedHeader.Y = -offset + expandableHeader.LayoutSize.Y;
+                }
+
+                Drawable bestMatch = null;
+                float minDiff = float.MaxValue;
+
+                foreach (var section in sections)
+                {
+                    float diff = Math.Abs(ScrollContainer.GetChildPosInContent(section) - currentScroll);
+                    if (diff < minDiff)
+                    {
+                        minDiff = diff;
+                        bestMatch = section;
+                    }
+                }
+
+                if (bestMatch != null)
+                    SelectedSection.Value = bestMatch;
+            }
+        }
+    }
+}

osu.Game/Overlays/Settings/SettingsHeader.cs

@@ -1,34 +1,16 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osu.Game.Graphics.UserInterface;
-using OpenTK.Graphics;
 
 namespace osu.Game.Overlays.Settings
 {
     public class SettingsHeader : Container
     {
-        public SearchTextBox SearchTextBox;
-
-        private Box background;
-
-        private readonly Func<float> currentScrollOffset;
-
-        public Action Exit;
-
-        /// <param name="currentScrollOffset">A reference to the current scroll position of the ScrollContainer we are contained within.</param>
-        public SettingsHeader(Func<float> currentScrollOffset)
-        {
-            this.currentScrollOffset = currentScrollOffset;
-        }
-
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
@@ -37,11 +19,6 @@ namespace osu.Game.Overlays.Settings
 
             Children = new Drawable[]
             {
-                background = new Box
-                {
-                    Colour = Color4.Black,
-                    RelativeSizeAxes = Axes.Both,
-                },
                 new FillFlowContainer
                 {
                     AutoSizeAxes = Axes.Y,
@@ -53,7 +30,8 @@ namespace osu.Game.Overlays.Settings
                         {
                             Text = "settings",
                             TextSize = 40,
-                            Margin = new MarginPadding {
+                            Margin = new MarginPadding
+                            {
                                 Left = SettingsOverlay.CONTENT_MARGINS,
                                 Top = Toolbar.Toolbar.TOOLTIP_HEIGHT
                             },
@@ -63,45 +41,15 @@ namespace osu.Game.Overlays.Settings
                             Colour = colours.Pink,
                             Text = "Change the way osu! behaves",
                             TextSize = 18,
-                            Margin = new MarginPadding {
+                            Margin = new MarginPadding
+                            {
                                 Left = SettingsOverlay.CONTENT_MARGINS,
                                 Bottom = 30
                             },
                         },
-                        SearchTextBox = new SearchTextBox
-                        {
-                            RelativeSizeAxes = Axes.X,
-                            Origin = Anchor.TopCentre,
-                            Anchor = Anchor.TopCentre,
-                            Width = 0.95f,
-                            Margin = new MarginPadding {
-                                Top = 20,
-                                Bottom = 20
-                            },
-                            Exit = () => Exit(),
-                        },
                     }
                 }
             };
         }
-
-        protected override void UpdateAfterChildren()
-        {
-            base.UpdateAfterChildren();
-
-            // the point at which we will start anchoring to the top.
-            float anchorOffset = SearchTextBox.Y;
-
-            float scrollPosition = currentScrollOffset();
-
-            // we want to anchor the search field to the top of the screen when scrolling.
-            Margin = new MarginPadding { Top = Math.Max(0, scrollPosition - anchorOffset) };
-
-            // we don't want the header to scroll when scrolling beyond the upper extent.
-            Y = Math.Min(0, scrollPosition);
-
-            // we get darker as scroll progresses
-            background.Alpha = Math.Min(1, scrollPosition / anchorOffset) * 0.5f;
-        }
     }
 }

osu.Game/Overlays/Settings/SidebarButton.cs

@@ -21,7 +21,7 @@ namespace osu.Game.Overlays.Settings
         private readonly Box backgroundBox;
         private readonly Box selectionIndicator;
         private readonly Container text;
-        public Action Action;
+        public Action<SettingsSection> Action;
 
         private SettingsSection section;
         public SettingsSection Section
@@ -75,6 +75,7 @@ namespace osu.Game.Overlays.Settings
                 {
                     Width = Sidebar.DEFAULT_WIDTH,
                     RelativeSizeAxes = Axes.Y,
+                    Colour = OsuColour.Gray(0.6f),
                     Children = new[]
                     {
                         headerText = new OsuSpriteText
@@ -110,7 +111,7 @@ namespace osu.Game.Overlays.Settings
 
         protected override bool OnClick(InputState state)
         {
-            Action?.Invoke();
+            Action?.Invoke(section);
             backgroundBox.FlashColour(Color4.White, 400);
             return true;
         }

osu.Game/Overlays/SettingsOverlay.cs

@@ -7,10 +7,11 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
-using osu.Game.Overlays.Settings;
-using System;
-using osu.Game.Overlays.Settings.Sections;
 using osu.Framework.Input;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays.Settings;
+using osu.Game.Overlays.Settings.Sections;
 
 namespace osu.Game.Overlays
 {
@@ -26,18 +27,13 @@ namespace osu.Game.Overlays
 
         private const float sidebar_padding = 10;
 
-        private ScrollContainer scrollContainer;
         private Sidebar sidebar;
         private SidebarButton[] sidebarButtons;
-        private SettingsSection[] sections;
+        private SidebarButton selectedSidebarButton;
 
-        private SettingsHeader header;
+        private SettingsSectionsContainer sectionsContainer;
 
-        private SettingsFooter footer;
+        private SearchTextBox searchTextBox;
-
-        private SearchContainer searchContainer;
-
-        private float lastKnownScroll;
 
         public SettingsOverlay()
         {
@@ -48,7 +44,7 @@ namespace osu.Game.Overlays
         [BackgroundDependencyLoader(permitNulls: true)]
         private void load(OsuGame game)
         {
-            sections = new SettingsSection[]
+            var sections = new SettingsSection[]
             {
                 new GeneralSection(),
                 new GraphicsSection(),
@@ -68,27 +64,27 @@ namespace osu.Game.Overlays
                     Colour = Color4.Black,
                     Alpha = 0.6f,
                 },
-                scrollContainer = new ScrollContainer
+                sectionsContainer = new SettingsSectionsContainer
                 {
-                    ScrollDraggerVisible = false,
                     RelativeSizeAxes = Axes.Y,
                     Width = width,
                     Margin = new MarginPadding { Left = SIDEBAR_WIDTH },
-                    Children = new Drawable[]
+                    ExpandableHeader = new SettingsHeader(),
+                    FixedHeader = searchTextBox = new SearchTextBox
                     {
-                        searchContainer = new SearchContainer
+                        RelativeSizeAxes = Axes.X,
+                        Origin = Anchor.TopCentre,
+                        Anchor = Anchor.TopCentre,
+                        Width = 0.95f,
+                        Margin = new MarginPadding
                         {
-                            AutoSizeAxes = Axes.Y,
+                            Top = 20,
-                            RelativeSizeAxes = Axes.X,
+                            Bottom = 20
-                            Direction = FillDirection.Vertical,
-                            Children = sections,
                         },
-                        footer = new SettingsFooter(),
+                        Exit = Hide,
-                        header = new SettingsHeader(() => scrollContainer.Current)
+                    },
-                        {
+                    Sections = sections,
-                            Exit = Hide,
+                    Footer = new SettingsFooter()
-                        },
-                    }
                 },
                 sidebar = new Sidebar
                 {
@@ -96,84 +92,89 @@ namespace osu.Game.Overlays
                     Children = sidebarButtons = sections.Select(section =>
                         new SidebarButton
                         {
-                            Selected = sections[0] == section,
                             Section = section,
-                            Action = () => scrollContainer.ScrollIntoView(section),
+                            Action = sectionsContainer.ScrollContainer.ScrollIntoView,
                         }
                     ).ToArray()
                 }
             };
 
-            header.SearchTextBox.Current.ValueChanged += newValue => searchContainer.SearchTerm = newValue;
+            selectedSidebarButton = sidebarButtons[0];
+            selectedSidebarButton.Selected = true;
 
-            scrollContainer.Padding = new MarginPadding { Top = game?.Toolbar.DrawHeight ?? 0 };
+            sectionsContainer.SelectedSection.ValueChanged += section =>
-        }
-
-        protected override void UpdateAfterChildren()
-        {
-            base.UpdateAfterChildren();
-
-            //we need to update these manually because we can't put the SettingsHeader inside the SearchContainer (due to its anchoring).
-            searchContainer.Y = header.DrawHeight;
-            footer.Y = searchContainer.Y + searchContainer.DrawHeight;
-        }
-
-        protected override void Update()
-        {
-            base.Update();
-
-            float currentScroll = scrollContainer.Current;
-            if (currentScroll != lastKnownScroll)
             {
-                lastKnownScroll = currentScroll;
+                selectedSidebarButton.Selected = false;
+                selectedSidebarButton = sidebarButtons.Single(b => b.Section == section);
+                selectedSidebarButton.Selected = true;
+            };
 
-                SettingsSection bestCandidate = null;
+            searchTextBox.Current.ValueChanged += newValue => sectionsContainer.SearchContainer.SearchTerm = newValue;
-                float bestDistance = float.MaxValue;
 
-                foreach (SettingsSection section in sections)
+            sectionsContainer.Padding = new MarginPadding { Top = game?.Toolbar.DrawHeight ?? 0 };
-                {
-                    float distance = Math.Abs(scrollContainer.GetChildPosInContent(section) - currentScroll);
-                    if (distance < bestDistance)
-                    {
-                        bestDistance = distance;
-                        bestCandidate = section;
-                    }
-                }
-
-                var previous = sidebarButtons.SingleOrDefault(sb => sb.Selected);
-                var next = sidebarButtons.SingleOrDefault(sb => sb.Section == bestCandidate);
-                if (previous != null) previous.Selected = false;
-                if (next != null) next.Selected = true;
-            }
         }
 
         protected override void PopIn()
         {
             base.PopIn();
 
-            scrollContainer.MoveToX(0, TRANSITION_LENGTH, EasingTypes.OutQuint);
+            sectionsContainer.MoveToX(0, TRANSITION_LENGTH, EasingTypes.OutQuint);
             sidebar.MoveToX(0, TRANSITION_LENGTH, EasingTypes.OutQuint);
             FadeTo(1, TRANSITION_LENGTH / 2);
 
-            header.SearchTextBox.HoldFocus = true;
+            searchTextBox.HoldFocus = true;
         }
 
         protected override void PopOut()
         {
             base.PopOut();
 
-            scrollContainer.MoveToX(-width, TRANSITION_LENGTH, EasingTypes.OutQuint);
+            sectionsContainer.MoveToX(-width, TRANSITION_LENGTH, EasingTypes.OutQuint);
             sidebar.MoveToX(-SIDEBAR_WIDTH, TRANSITION_LENGTH, EasingTypes.OutQuint);
             FadeTo(0, TRANSITION_LENGTH / 2);
 
-            header.SearchTextBox.HoldFocus = false;
+            searchTextBox.HoldFocus = false;
-            header.SearchTextBox.TriggerFocusLost();
+            searchTextBox.TriggerFocusLost();
         }
 
         protected override bool OnFocus(InputState state)
         {
-            header.SearchTextBox.TriggerFocus(state);
+            searchTextBox.TriggerFocus(state);
             return false;
         }
+
+        private class SettingsSectionsContainer : SectionsContainer
+        {
+            public SearchContainer SearchContainer;
+            private readonly Box headerBackground;
+
+            protected override Container<Drawable> CreateScrollContentContainer()
+                => SearchContainer = new SearchContainer
+                {
+                    AutoSizeAxes = Axes.Y,
+                    RelativeSizeAxes = Axes.X,
+                    Direction = FillDirection.Vertical,
+                };
+
+            public SettingsSectionsContainer()
+            {
+                ScrollContainer.ScrollDraggerVisible = false;
+                Add(headerBackground = new Box
+                {
+                    Colour = Color4.Black,
+                    RelativeSizeAxes = Axes.X
+                });
+            }
+
+            protected override void UpdateAfterChildren()
+            {
+                base.UpdateAfterChildren();
+
+                // no null check because the usage of this class is strict
+                headerBackground.Height = ExpandableHeader.LayoutSize.Y + FixedHeader.LayoutSize.Y;
+                headerBackground.Y = ExpandableHeader.Y;
+                headerBackground.Alpha = -ExpandableHeader.Y / ExpandableHeader.LayoutSize.Y * 0.5f;
+            }
+        }
     }
 }

osu.Game/osu.Game.csproj

@@ -81,6 +81,7 @@
     <Compile Include="Overlays\Music\PlaylistItem.cs" />
     <Compile Include="Overlays\Music\PlaylistList.cs" />
     <Compile Include="Overlays\OnScreenDisplay.cs" />
+    <Compile Include="Graphics\Containers\SectionsContainer.cs" />
     <Compile Include="Overlays\Settings\SettingsHeader.cs" />
     <Compile Include="Overlays\Settings\Sections\Audio\MainMenuSettings.cs" />
     <Compile Include="Overlays\Toolbar\ToolbarChatButton.cs" />