Merge remote-tracking branch 'refs/remotes/ppy/master' into moarOptions

osu-framework

@@ -1 +1 @@
-Subproject commit 4c0762eec20d2a3063df908a49432326570bea9f
+Subproject commit 798409058a421307b5a92aeea4cd60a065f5a0d4

osu-resources

@@ -1 +1 @@
-Subproject commit 51f2b9b37f38cd349a3dd728a78f8fffcb3a54f5
+Subproject commit 93eb5bf99bb642bf339d7dce09c2d946412dadd6

osu.Desktop.Deploy/Program.cs

@@ -74,7 +74,7 @@ namespace osu.Desktop.Deploy
             refreshDirectory(StagingFolder);
 
             //increment build number until we have a unique one.
-            string verBase = DateTime.Now.ToString("yyyy.Md.");
+            string verBase = DateTime.Now.ToString("yyyy.Mdd.");
             int increment = 0;
             while (Directory.GetFiles(ReleasesFolder, $"*{verBase}{increment}*").Any())
                 increment++;

osu.Desktop.VisualTests/Tests/TestCaseBeatmapOptionsOverlay.cs

@@ -0,0 +1,28 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Screens.Testing;
+using osu.Game.Graphics;
+using osu.Game.Overlays;
+using osu.Game.Screens.Select.Options;
+
+namespace osu.Desktop.VisualTests
+{
+    class TestCaseBeatmapOptionsOverlay : TestCase
+    {
+        public override string Name => @"Beatmap Options";
+        public override string Description => @"Beatmap options in song select";
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            var overlay = new BeatmapOptionsOverlay();
+
+            Add(overlay);
+
+            AddButton(@"Toggle", overlay.ToggleVisibility);
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseDialogOverlay.cs

@@ -0,0 +1,80 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Screens.Testing;
+using osu.Game.Graphics;
+using osu.Game.Overlays;
+using osu.Game.Overlays.Dialog;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    class TestCaseDialogOverlay : TestCase
+    {
+        public override string Name => @"Dialog Overlay";
+        public override string Description => @"Display dialogs";
+
+        DialogOverlay overlay;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(overlay = new DialogOverlay());
+
+            AddButton("dialog #1", () => overlay.Push(new PopupDialog
+            {
+                Icon = FontAwesome.fa_trash_o,
+                HeaderText = @"Confirm deletion of",
+                BodyText = @"Ayase Rie - Yuima-ru*World TVver.",
+                Buttons = new PopupDialogButton[]
+                {
+                    new PopupDialogOkButton
+                    {
+                        Text = @"I never want to see this again.",
+                        Action = () => System.Console.WriteLine(@"OK"),
+                    },
+                    new PopupDialogCancelButton
+                    {
+                        Text = @"Firetruck, I still want quick ranks!",
+                        Action = () => System.Console.WriteLine(@"Cancel"),
+                    },
+                },
+            }));
+
+            AddButton("dialog #2", () => overlay.Push(new PopupDialog
+            {
+                Icon = FontAwesome.fa_gear,
+                HeaderText = @"What do you want to do with",
+                BodyText = "Camellia as \"Bang Riot\" - Blastix Riotz",
+                Buttons = new PopupDialogButton[]
+                {
+                    new PopupDialogOkButton
+                    {
+                        Text = @"Manage collections",
+                    },
+                    new PopupDialogOkButton
+                    {
+                        Text = @"Delete...",
+                    },
+                    new PopupDialogOkButton
+                    {
+                        Text = @"Remove from unplayed",
+                    },
+                    new PopupDialogOkButton
+                    {
+                        Text = @"Clear local scores",
+                    },
+                    new PopupDialogOkButton
+                    {
+                        Text = @"Edit",
+                    },
+                    new PopupDialogCancelButton
+                    {
+                        Text = @"Cancel",
+                    },
+                },
+            }));
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseDrawings.cs

@@ -0,0 +1,94 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu-framework/master/LICENCE
+
+using System.Collections.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Platform;
+using osu.Framework.Screens.Testing;
+using osu.Game.Screens.Tournament;
+using osu.Game.Screens.Tournament.Teams;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    class TestCaseDrawings : TestCase
+    {
+        public override string Name => @"Drawings";
+        public override string Description => "Tournament drawings";
+
+        [BackgroundDependencyLoader]
+        private void load(Storage storage)
+        {
+        }
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(new Drawings
+            {
+                TeamList = new TestTeamList(),
+            });
+        }
+
+        class TestTeamList : ITeamList
+        {
+            public IEnumerable<Team> Teams { get; } = new[]
+            {
+                new Team
+                {
+                    FlagName = "GB",
+                    FullName = "United Kingdom",
+                    Acronym = "UK"
+                },
+                new Team
+                {
+                    FlagName = "FR",
+                    FullName = "France",
+                    Acronym = "FRA"
+                },
+                new Team
+                {
+                    FlagName = "CN",
+                    FullName = "China",
+                    Acronym = "CHN"
+                },
+                new Team
+                {
+                    FlagName = "AU",
+                    FullName = "Australia",
+                    Acronym = "AUS"
+                },
+                new Team
+                {
+                    FlagName = "JP",
+                    FullName = "Japan",
+                    Acronym = "JPN"
+                },
+                new Team
+                {
+                    FlagName = "RO",
+                    FullName = "Romania",
+                    Acronym = "ROM"
+                },
+                new Team
+                {
+                    FlagName = "IT",
+                    FullName = "Italy",
+                    Acronym = "PIZZA"
+                },
+                new Team
+                {
+                    FlagName = "VE",
+                    FullName = "Venezuela",
+                    Acronym = "VNZ"
+                },
+                new Team
+                {
+                    FlagName = "US",
+                    FullName = "United States of America",
+                    Acronym = "USA"
+                },
+            };
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseHitObjects.cs

@@ -95,7 +95,7 @@ namespace osu.Desktop.VisualTests.Tests
             AddButton(@"slider", () => load(HitObjectType.Slider));
             AddButton(@"spinner", () => load(HitObjectType.Spinner));
 
-            AddToggle(@"auto", () => { auto = !auto; load(mode); });
+            AddToggle(@"auto", (state) => { auto = state; load(mode); });
 
             ButtonsContainer.Add(new SpriteText { Text = "Playback Speed" });
             ButtonsContainer.Add(new BasicSliderBar<double>

osu.Desktop.VisualTests/Tests/TestCaseModSelectOverlay.cs

@@ -0,0 +1,40 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Game.Overlays.Mods;
+using osu.Framework.Screens.Testing;
+using osu.Game.Modes;
+using osu.Game.Graphics;
+using osu.Framework.Allocation;
+using osu.Game.Overlays;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    class TestCaseModSelectOverlay : TestCase
+    {
+        public override string Name => @"Mod Select";
+
+        public override string Description => @"Tests the mod select overlay";
+
+        private ModSelectOverlay modSelect;
+
+        public override void Reset()
+        {
+            base.Reset();
+
+            Add(modSelect = new ModSelectOverlay
+            {
+                RelativeSizeAxes = Axes.X,
+                Origin = Anchor.BottomCentre,
+                Anchor = Anchor.BottomCentre,
+            });
+
+            AddButton("Toggle", modSelect.ToggleVisibility);
+            AddButton("osu!", () => modSelect.PlayMode.Value = PlayMode.Osu);
+            AddButton("osu!taiko", () => modSelect.PlayMode.Value = PlayMode.Taiko);
+            AddButton("osu!catch", () => modSelect.PlayMode.Value = PlayMode.Catch);
+            AddButton("osu!mania", () => modSelect.PlayMode.Value = PlayMode.Mania);
+        }
+    }
+}

osu.Desktop.VisualTests/Tests/TestCaseMusicController.cs

@@ -5,6 +5,7 @@ using osu.Framework.Screens.Testing;
 using osu.Framework.Graphics;
 using osu.Framework.Timing;
 using osu.Game.Overlays;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Desktop.VisualTests.Tests
 {
@@ -30,7 +31,7 @@ namespace osu.Desktop.VisualTests.Tests
                 Anchor = Anchor.Centre
             };
             Add(mc);
-            AddToggle(@"Show", mc.ToggleVisibility);
+            AddToggle(@"Show", (state) => mc.State = state ? Visibility.Visible : Visibility.Hidden);
         }
     }
 }

osu.Desktop.VisualTests/Tests/TestCaseNotificationManager.cs

@@ -8,6 +8,7 @@ using osu.Framework.MathUtils;
 using osu.Game.Overlays;
 using System.Linq;
 using osu.Game.Overlays.Notifications;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Desktop.VisualTests.Tests
 {
@@ -30,7 +31,7 @@ namespace osu.Desktop.VisualTests.Tests
                 Origin = Anchor.TopRight,
             });
 
-            AddToggle(@"show", manager.ToggleVisibility);
+            AddToggle(@"show", (state) => manager.State = state ? Visibility.Visible : Visibility.Hidden);
 
             AddButton(@"simple #1", sendNotification1);
             AddButton(@"simple #2", sendNotification2);

osu.Desktop.VisualTests/Tests/TestCasePauseOverlay.cs

@@ -2,8 +2,8 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using osu.Framework.Logging;
-using osu.Game.Overlays.Pause;
 using osu.Framework.Screens.Testing;
+using osu.Game.Screens.Play;
 
 namespace osu.Desktop.VisualTests.Tests
 {

osu.Desktop.VisualTests/Tests/TestCasePlaySongSelect.cs

@@ -1,9 +1,11 @@
 // 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 osu.Desktop.VisualTests.Platform;
 using osu.Framework.Screens.Testing;
+using osu.Framework.MathUtils;
 using osu.Game.Database;
 using osu.Game.Modes;
 using osu.Game.Screens.Select;
@@ -14,6 +16,7 @@ namespace osu.Desktop.VisualTests.Tests
     {
         private BeatmapDatabase db, oldDb;
         private TestStorage storage;
+        private PlaySongSelect songSelect;
 
         public override string Name => @"Song Select";
         public override string Description => @"with fake data";
@@ -35,7 +38,13 @@ namespace osu.Desktop.VisualTests.Tests
 
                 db.Import(sets);
             }
-            Add(new PlaySongSelect());
+
+            Add(songSelect = new PlaySongSelect());
+
+            AddButton(@"Sort by Artist", delegate { songSelect.Filter.Sort = FilterControl.SortMode.Artist; });
+            AddButton(@"Sort by Title", delegate { songSelect.Filter.Sort = FilterControl.SortMode.Title; });
+            AddButton(@"Sort by Author", delegate { songSelect.Filter.Sort = FilterControl.SortMode.Author; });
+            AddButton(@"Sort by Difficulty", delegate { songSelect.Filter.Sort = FilterControl.SortMode.Difficulty; });
         }
 
         protected override void Dispose(bool isDisposing)
@@ -59,9 +68,10 @@ namespace osu.Desktop.VisualTests.Tests
                 Metadata = new BeatmapMetadata
                 {
                     OnlineBeatmapSetID = 1234 + i,
-                    Artist = "MONACA",
+                    // Create random metadata, then we can check if sorting works based on these
-                    Title = "Black Song",
+                    Artist = "MONACA " + RNG.Next(0, 9),
-                    Author = "Some Guy",
+                    Title = "Black Song " + RNG.Next(0, 9),
+                    Author = "Some Guy " + RNG.Next(0, 9),
                 },
                 Beatmaps = new List<BeatmapInfo>(new[]
                 {

osu.Desktop.VisualTests/Tests/TestCaseTextAwesome.cs

@@ -22,9 +22,9 @@ namespace osu.Desktop.VisualTests.Tests
         {
             base.Reset();
 
-            FlowContainer flow;
+            FillFlowContainer flow;
 
-            Add(flow = new FlowContainer()
+            Add(flow = new FillFlowContainer()
             {
                 RelativeSizeAxes = Axes.Both,
                 Size = new Vector2(0.5f),

osu.Desktop.VisualTests/osu.Desktop.VisualTests.csproj

@@ -179,6 +179,7 @@
     <Compile Include="Benchmark.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Tests\TestCaseChatDisplay.cs" />
+    <Compile Include="Tests\TestCaseDrawings.cs" />
     <Compile Include="Tests\TestCaseGamefield.cs" />
     <Compile Include="Tests\TestCaseMusicController.cs" />
     <Compile Include="Tests\TestCaseNotificationManager.cs" />
@@ -194,6 +195,9 @@
     <Compile Include="Platform\TestStorage.cs" />
     <Compile Include="Tests\TestCaseOptions.cs" />
     <Compile Include="Tests\TestCasePauseOverlay.cs" />
+    <Compile Include="Tests\TestCaseModSelectOverlay.cs" />
+    <Compile Include="Tests\TestCaseDialogOverlay.cs" />
+    <Compile Include="Tests\TestCaseBeatmapOptionsOverlay.cs" />
   </ItemGroup>
   <ItemGroup />
   <ItemGroup />

osu.Desktop/Overlays/VersionManager.cs

@@ -18,6 +18,7 @@ using osu.Game.Graphics;
 using OpenTK;
 using OpenTK.Graphics;
 using System.Net.Http;
+using osu.Framework.Logging;
 
 namespace osu.Desktop.Overlays
 {
@@ -57,19 +58,19 @@ namespace osu.Desktop.Overlays
 
             Children = new Drawable[]
             {
-                new FlowContainer
+                new FillFlowContainer
                 {
                     AutoSizeAxes = Axes.Both,
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
                     Children = new Drawable[]
                     {
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             AutoSizeAxes = Axes.Both,
-                            Direction = FlowDirections.Horizontal,
+                            Direction = FillDirection.Right,
+                            Spacing = new Vector2(5),
                             Anchor = Anchor.TopCentre,
                             Origin = Anchor.TopCentre,
-                            Spacing = new Vector2(5),
                             Children = new Drawable[]
                             {
                                 new OsuSpriteText
@@ -95,6 +96,8 @@ namespace osu.Desktop.Overlays
                         },
                         new Sprite
                         {
+                            Anchor = Anchor.TopCentre,
+                            Origin = Anchor.TopCentre,
                             Texture = textures.Get(@"Menu/dev-build-footer"),
                         },
                     }
@@ -157,15 +160,21 @@ namespace osu.Desktop.Overlays
 
                     Schedule(() => notification.State = ProgressNotificationState.Completed);
                 }
-                catch (Exception)
+                catch (Exception e)
                 {
                     if (useDeltaPatching)
                     {
+                        Logger.Error(e, @"delta patching failed!");
+
                         //could fail if deltas are unavailable for full update path (https://github.com/Squirrel/Squirrel.Windows/issues/959)
                         //try again without deltas.
                         checkForUpdateAsync(false, notification);
                         scheduleRetry = false;
                     }
+                    else
+                    {
+                        Logger.Error(e, @"update failed!");
+                    }
                 }
             }
             catch (HttpRequestException)

osu.Game.Modes.Catch/CatchMod.cs

@@ -0,0 +1,64 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Modes.Catch
+{
+    public class CatchModNoFail : ModNoFail
+    {
+
+    }
+
+    public class CatchModEasy : ModEasy
+    {
+
+    }
+
+    public class CatchModHidden : ModHidden
+    {
+        public override string Description => @"Play with no approach circles and fading notes for a slight score advantage.";
+        public override double ScoreMultiplier => 1.06;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class CatchModHardRock : ModHardRock
+    {
+        public override double ScoreMultiplier => 1.12;
+        public override bool Ranked => true;
+    }
+
+    public class CatchModSuddenDeath : ModSuddenDeath
+    {
+
+    }
+
+    public class CatchModDoubleTime : ModDoubleTime
+    {
+        public override double ScoreMultiplier => 1.06;
+    }
+
+    public class CatchModRelax : ModRelax
+    {
+        public override string Description => @"Use the mouse to control the catcher.";
+    }
+
+    public class CatchModHalfTime : ModHalfTime
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
+    public class CatchModNightcore : ModNightcore
+    {
+        public override double ScoreMultiplier => 1.06;
+    }
+
+    public class CatchModFlashlight : ModFlashlight
+    {
+        public override double ScoreMultiplier => 1.12;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class CatchModPerfect : ModPerfect
+    {
+
+    }
+}

osu.Game.Modes.Catch/CatchRuleset.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Collections.Generic;
 using osu.Game.Graphics;
 using osu.Game.Modes.Catch.UI;
 using osu.Game.Modes.Objects;
@@ -16,6 +17,61 @@ namespace osu.Game.Modes.Catch
 
         public override HitRenderer CreateHitRendererWith(Beatmap beatmap) => new CatchHitRenderer { Beatmap = beatmap };
 
+        public override IEnumerable<Mod> GetModsFor(ModType type)
+        {
+            switch (type)
+            {
+                case ModType.DifficultyReduction:
+                    return new Mod[]
+                    {
+                        new CatchModEasy(),
+                        new CatchModNoFail(),
+                        new CatchModHalfTime(),
+                    };
+
+                case ModType.DifficultyIncrease:
+                    return new Mod[]
+                    {
+                        new CatchModHardRock(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new CatchModSuddenDeath(),
+                                new CatchModPerfect(),
+                            },
+                        },
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new CatchModDoubleTime(),
+                                new CatchModNightcore(),
+                            },
+                        },
+                        new CatchModHidden(),
+                        new CatchModFlashlight(),
+                    };
+
+                case ModType.Special:
+                    return new Mod[]
+                    {
+                        new CatchModRelax(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ModAutoplay(),
+                                new ModCinema(),
+                            },
+                        },
+                    };
+
+                default:
+                    return new Mod[] { };
+            }
+        }
+
         protected override PlayMode PlayMode => PlayMode.Catch;
 
         public override FontAwesome Icon => FontAwesome.fa_osu_fruits_o;

osu.Game.Modes.Catch/osu.Game.Modes.Catch.csproj

@@ -58,6 +58,7 @@
     <Compile Include="UI\CatchHitRenderer.cs" />
     <Compile Include="UI\CatchPlayfield.cs" />
     <Compile Include="CatchRuleset.cs" />
+    <Compile Include="CatchMod.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\osu.licenseheader">

osu.Game.Modes.Mania/ManiaMod.cs

@@ -0,0 +1,155 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Graphics;
+
+namespace osu.Game.Modes.Mania
+{
+    public class ManiaModNoFail : ModNoFail
+    {
+
+    }
+
+    public class ManiaModEasy : ModEasy
+    {
+
+    }
+
+    public class ManiaModHidden : ModHidden
+    {
+        public override string Description => @"The notes fade out before you hit them!";
+        public override double ScoreMultiplier => 1.0;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Flashlight };
+    }
+
+    public class ManiaModHardRock : ModHardRock
+    {
+        public override double ScoreMultiplier => 1.0;
+        public override bool Ranked => false;
+    }
+
+    public class ManiaModSuddenDeath : ModSuddenDeath
+    {
+
+    }
+
+    public class ManiaModDoubleTime : ModDoubleTime
+    {
+        public override double ScoreMultiplier => 1.0;
+    }
+
+    public class ManiaModHalfTime : ModHalfTime
+    {
+        public override double ScoreMultiplier => 0.3;
+    }
+
+    public class ManiaModNightcore : ModNightcore
+    {
+        public override double ScoreMultiplier => 1.0;
+    }
+
+    public class ManiaModFlashlight : ModFlashlight
+    {
+        public override double ScoreMultiplier => 1.0;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Hidden };
+    }
+
+    public class ManiaModPerfect : ModPerfect
+    {
+
+    }
+
+    public class ManiaModFadeIn : Mod
+    {
+        public override Mods Name => Mods.FadeIn;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_hidden;
+        public override string Description => @"";
+        public override double ScoreMultiplier => 1;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Flashlight };
+    }
+
+    public class ManiaModRandom : Mod
+    {
+        public override Mods Name => Mods.Random;
+        public override FontAwesome Icon => FontAwesome.fa_close;
+        public override string Description => @"Shuffle around the notes!";
+        public override double ScoreMultiplier => 1;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public abstract class ManiaKeyMod : Mod
+    {
+        public abstract int KeyCount { get; }
+        public override FontAwesome Icon => FontAwesome.fa_close; // TODO: Add proper key icons
+        public override string Description => @"";
+        public override double ScoreMultiplier => 1; // TODO: Implement the mania key mod score multiplier
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class ManiaModKey1 : ManiaKeyMod
+    {
+        public override int KeyCount => 1;
+        public override Mods Name => Mods.Key1;
+    }
+
+    public class ManiaModKey2 : ManiaKeyMod
+    {
+        public override int KeyCount => 2;
+        public override Mods Name => Mods.Key2;
+    }
+
+    public class ManiaModKey3 : ManiaKeyMod
+    {
+        public override int KeyCount => 3;
+        public override Mods Name => Mods.Key3;
+    }
+
+    public class ManiaModKey4 : ManiaKeyMod
+    {
+        public override int KeyCount => 4;
+        public override Mods Name => Mods.Key4;
+    }
+
+    public class ManiaModKey5 : ManiaKeyMod
+    {
+        public override int KeyCount => 5;
+        public override Mods Name => Mods.Key5;
+    }
+
+    public class ManiaModKey6 : ManiaKeyMod
+    {
+        public override int KeyCount => 6;
+        public override Mods Name => Mods.Key6;
+    }
+
+    public class ManiaModKey7 : ManiaKeyMod
+    {
+        public override int KeyCount => 7;
+        public override Mods Name => Mods.Key7;
+    }
+
+    public class ManiaModKey8 : ManiaKeyMod
+    {
+        public override int KeyCount => 8;
+        public override Mods Name => Mods.Key8;
+    }
+
+    public class ManiaModKey9 : ManiaKeyMod
+    {
+        public override int KeyCount => 9;
+        public override Mods Name => Mods.Key9;
+    }
+
+    public class ManiaModKeyCoop : Mod
+    {
+        public override Mods Name => Mods.KeyCoop;
+        public override FontAwesome Icon => FontAwesome.fa_close;
+        public override string Description => @"Double the key amount, double the fun!";
+        public override double ScoreMultiplier => 1;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+}

osu.Game.Modes.Mania/ManiaRuleset.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Collections.Generic;
 using osu.Game.Graphics;
 using osu.Game.Modes.Mania.UI;
 using osu.Game.Modes.Objects;
@@ -16,6 +17,77 @@ namespace osu.Game.Modes.Mania
 
         public override HitRenderer CreateHitRendererWith(Beatmap beatmap) => new ManiaHitRenderer { Beatmap = beatmap };
 
+        public override IEnumerable<Mod> GetModsFor(ModType type)
+        {
+            switch (type)
+            {
+                case ModType.DifficultyReduction:
+                    return new Mod[]
+                    {
+                        new ManiaModEasy(),
+                        new ManiaModNoFail(),
+                        new ManiaModHalfTime(),
+                    };
+
+                case ModType.DifficultyIncrease:
+                    return new Mod[]
+                    {
+                        new ManiaModHardRock(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ManiaModSuddenDeath(),
+                                new ManiaModPerfect(),
+                            },
+                        },
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ManiaModDoubleTime(),
+                                new ManiaModNightcore(),
+                            },
+                        },
+                        new ManiaModHidden(),
+                        new ManiaModFlashlight(),
+                    };
+
+                case ModType.Special:
+                    return new Mod[]
+                    {
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ManiaModKey4(),
+                                new ManiaModKey5(),
+                                new ManiaModKey6(),
+                                new ManiaModKey7(),
+                                new ManiaModKey8(),
+                                new ManiaModKey9(),
+                                new ManiaModKey1(),
+                                new ManiaModKey2(),
+                                new ManiaModKey3(),
+                            },
+                        },
+                        new ManiaModKeyCoop(),
+                        new ManiaModRandom(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ModAutoplay(),
+                                new ModCinema(),
+                            },
+                        },
+                    };
+
+                default:
+                    return new Mod[] { };
+            }
+        }
+
         protected override PlayMode PlayMode => PlayMode.Mania;
 
         public override FontAwesome Icon => FontAwesome.fa_osu_mania_o;

osu.Game.Modes.Mania/osu.Game.Modes.Mania.csproj

@@ -58,6 +58,7 @@
     <Compile Include="UI\ManiaHitRenderer.cs" />
     <Compile Include="UI\ManiaPlayfield.cs" />
     <Compile Include="ManiaRuleset.cs" />
+    <Compile Include="ManiaMod.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\osu-framework\osu.Framework\osu.Framework.csproj">

osu.Game.Modes.Osu/Objects/Drawables/HitExplosion.cs

@@ -13,7 +13,7 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Modes.Osu.Objects.Drawables
 {
-    public class HitExplosion : FlowContainer
+    public class HitExplosion : FillFlowContainer
     {
         private readonly OsuJudgementInfo judgement;
         private SpriteText line1;
@@ -25,7 +25,7 @@ namespace osu.Game.Modes.Osu.Objects.Drawables
             AutoSizeAxes = Axes.Both;
             Origin = Anchor.Centre;
 
-            Direction = FlowDirections.Vertical;
+            Direction = FillDirection.Down;
             Spacing = new Vector2(0, 2);
             Position = (h?.StackedEndPosition ?? Vector2.Zero) + judgement.PositionOffset;
 

osu.Game.Modes.Osu/Objects/HitCircle.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes.Osu.Objects
 {
     public class HitCircle : OsuHitObject

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

@@ -1,4 +1,7 @@
-namespace osu.Game.Modes.Osu.Objects
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Modes.Osu.Objects
 {
     public class SliderTick : OsuHitObject
     {

osu.Game.Modes.Osu/Objects/Spinner.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes.Osu.Objects
 {
     public class Spinner : OsuHitObject

osu.Game.Modes.Osu/OsuMod.cs

@@ -0,0 +1,96 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Game.Graphics;
+
+namespace osu.Game.Modes.Osu
+{
+    public class OsuModNoFail : ModNoFail
+    {
+        
+    }
+
+    public class OsuModEasy : ModEasy
+    {
+
+    }
+
+    public class OsuModHidden : ModHidden
+    {
+        public override string Description => @"Play with no approach circles and fading notes for a slight score advantage.";
+        public override double ScoreMultiplier => 1.06;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class OsuModHardRock : ModHardRock
+    {
+        public override double ScoreMultiplier => 1.06;
+        public override bool Ranked => true;
+    }
+
+    public class OsuModSuddenDeath : ModSuddenDeath
+    {
+        
+    }
+
+    public class OsuModDoubleTime : ModDoubleTime
+    {
+        public override double ScoreMultiplier => 1.12;
+    }
+
+    public class OsuModRelax : ModRelax
+    {
+        public override string Description => "You don't need to click.\nGive your clicking/tapping finger a break from the heat of things.";
+    }
+
+    public class OsuModHalfTime : ModHalfTime
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
+    public class OsuModNightcore : ModNightcore
+    {
+        public override double ScoreMultiplier => 1.12;
+    }
+
+    public class OsuModFlashlight : ModFlashlight
+    {
+        public override double ScoreMultiplier => 1.12;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class OsuModPerfect : ModPerfect
+    {
+        
+    }
+
+    public class OsuModSpunOut : Mod
+    {
+        public override Mods Name => Mods.SpunOut;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_spunout;
+        public override string Description => @"Spinners will be automatically completed";
+        public override double ScoreMultiplier => 0.9;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Autoplay, Mods.Cinema, Mods.Autopilot };
+    }
+
+    public class OsuModAutopilot : Mod
+    {
+        public override Mods Name => Mods.Autopilot;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_autopilot;
+        public override string Description => @"Automatic cursor movement - just follow the rhythm.";
+        public override double ScoreMultiplier => 0;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { Mods.SpunOut, Mods.Relax, Mods.SuddenDeath, Mods.Perfect, Mods.NoFail, Mods.Autoplay, Mods.Cinema };
+    }
+
+    public class OsuModTarget : Mod
+    {
+        public override Mods Name => Mods.Target;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_target;
+        public override string Description => @"";
+        public override double ScoreMultiplier => 1;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+}

osu.Game.Modes.Osu/OsuRuleset.cs

@@ -34,6 +34,64 @@ namespace osu.Game.Modes.Osu
             }
         };
 
+        public override IEnumerable<Mod> GetModsFor(ModType type)
+        {
+            switch (type)
+            {
+                case ModType.DifficultyReduction:
+                    return new Mod[]
+                    {
+                        new OsuModEasy(),
+                        new OsuModNoFail(),
+                        new OsuModHalfTime(),
+                    };
+
+                case ModType.DifficultyIncrease:
+                    return new Mod[]
+                    {
+                        new OsuModHardRock(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new OsuModSuddenDeath(),
+                                new OsuModPerfect(),
+                            },
+                        },
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new OsuModDoubleTime(),
+                                new OsuModNightcore(),
+                            },
+                        },
+                        new OsuModHidden(),
+                        new OsuModFlashlight(),
+                    };
+
+                case ModType.Special:
+                    return new Mod[]
+                    {
+                        new OsuModRelax(),
+                        new OsuModAutopilot(),
+                        new OsuModTarget(),
+                        new OsuModSpunOut(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ModAutoplay(),
+                                new ModCinema(),
+                            },
+                        },
+                    };
+
+                default:
+                    return new Mod[] { };
+            }
+        }
+
         public override FontAwesome Icon => FontAwesome.fa_osu_osu_o;
 
         public override HitObjectParser CreateHitObjectParser() => new OsuHitObjectParser();

osu.Game.Modes.Osu/OsuScore.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes.Osu
 {
     class OsuScore : Score

osu.Game.Modes.Osu/osu.Game.Modes.Osu.csproj

@@ -85,6 +85,7 @@
     <Compile Include="Objects\Spinner.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="UI\OsuScoreOverlay.cs" />
+    <Compile Include="OsuMod.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\osu-framework\osu.Framework\osu.Framework.csproj">

osu.Game.Modes.Taiko/TaikoMod.cs

@@ -0,0 +1,64 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Modes.Taiko
+{
+    public class TaikoModNoFail : ModNoFail
+    {
+
+    }
+
+    public class TaikoModEasy : ModEasy
+    {
+
+    }
+
+    public class TaikoModHidden : ModHidden
+    {
+        public override string Description => @"The notes fade out before you hit them!";
+        public override double ScoreMultiplier => 1.06;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class TaikoModHardRock : ModHardRock
+    {
+        public override double ScoreMultiplier => 1.06;
+        public override bool Ranked => true;
+    }
+
+    public class TaikoModSuddenDeath : ModSuddenDeath
+    {
+
+    }
+
+    public class TaikoModDoubleTime : ModDoubleTime
+    {
+        public override double ScoreMultiplier => 1.12;
+    }
+
+    public class TaikoModRelax : ModRelax
+    {
+        public override string Description => @"Relax! You will no longer get dizzyfied by ninja-like spinners, demanding drumrolls or unexpected katu's.";
+    }
+
+    public class TaikoModHalfTime : ModHalfTime
+    {
+        public override double ScoreMultiplier => 0.5;
+    }
+
+    public class TaikoModNightcore : ModNightcore
+    {
+        public override double ScoreMultiplier => 1.12;
+    }
+
+    public class TaikoModFlashlight : ModFlashlight
+    {
+        public override double ScoreMultiplier => 1.12;
+        public override Mods[] DisablesMods => new Mods[] { };
+    }
+
+    public class TaikoModPerfect : ModPerfect
+    {
+
+    }
+}

osu.Game.Modes.Taiko/TaikoRuleset.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System.Collections.Generic;
 using osu.Game.Graphics;
 using osu.Game.Modes.Objects;
 using osu.Game.Modes.Osu.UI;
@@ -16,6 +17,61 @@ namespace osu.Game.Modes.Taiko
 
         public override HitRenderer CreateHitRendererWith(Beatmap beatmap) => new TaikoHitRenderer { Beatmap = beatmap };
 
+        public override IEnumerable<Mod> GetModsFor(ModType type)
+        {
+            switch (type)
+            {
+                case ModType.DifficultyReduction:
+                    return new Mod[]
+                    {
+                        new TaikoModEasy(),
+                        new TaikoModNoFail(),
+                        new TaikoModHalfTime(),
+                    };
+
+                case ModType.DifficultyIncrease:
+                    return new Mod[]
+                    {
+                        new TaikoModHardRock(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new TaikoModSuddenDeath(),
+                                new TaikoModPerfect(),
+                            },
+                        },
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new TaikoModDoubleTime(),
+                                new TaikoModNightcore(),
+                            },
+                        },
+                        new TaikoModHidden(),
+                        new TaikoModFlashlight(),
+                    };
+
+                case ModType.Special:
+                    return new Mod[]
+                    {
+                        new TaikoModRelax(),
+                        new MultiMod
+                        {
+                            Mods = new Mod[]
+                            {
+                                new ModAutoplay(),
+                                new ModCinema(),
+                            },
+                        },
+                    };
+
+                default:
+                    return new Mod[] { };
+            }
+        }
+
         protected override PlayMode PlayMode => PlayMode.Taiko;
 
         public override FontAwesome Icon => FontAwesome.fa_osu_taiko_o;

osu.Game.Modes.Taiko/osu.Game.Modes.Taiko.csproj

@@ -56,6 +56,7 @@
     <Compile Include="UI\TaikoHitRenderer.cs" />
     <Compile Include="UI\TaikoPlayfield.cs" />
     <Compile Include="TaikoRuleset.cs" />
+    <Compile Include="TaikoMod.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\osu.licenseheader">

osu.Game.Tests/Beatmaps/IO/ImportBeatmapTest.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.IO;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
@@ -40,8 +41,16 @@ namespace osu.Game.Tests.Beatmaps.IO
             using (HeadlessGameHost host = new HeadlessGameHost())
             {
                 var osu = loadOsu(host);
-                osu.Dependencies.Get<BeatmapDatabase>().Import(osz_path);
+
+                var temp = prepareTempCopy(osz_path);
+
+                Assert.IsTrue(File.Exists(temp));
+
+                osu.Dependencies.Get<BeatmapDatabase>().Import(temp);
+
                 ensureLoaded(osu);
+
+                Assert.IsFalse(File.Exists(temp));
             }
         }
 
@@ -56,14 +65,51 @@ namespace osu.Game.Tests.Beatmaps.IO
 
                 var osu = loadOsu(host);
 
+                var temp = prepareTempCopy(osz_path);
+
+                Assert.IsTrue(File.Exists(temp));
+
                 var importer = new BeatmapImporter(client);
-                if (!importer.ImportAsync(osz_path).Wait(1000))
+                if (!importer.ImportAsync(temp).Wait(1000))
                     Assert.Fail(@"IPC took too long to send");
 
                 ensureLoaded(osu);
+
+                Assert.IsFalse(File.Exists(temp));
             }
         }
 
+        [Test]
+        public void TestImportWhenFileOpen()
+        {
+            //unfortunately for the time being we need to reference osu.Framework.Desktop for a game host here.
+            using (HeadlessGameHost host = new HeadlessGameHost())
+            {
+                var osu = loadOsu(host);
+
+                var temp = prepareTempCopy(osz_path);
+
+                Assert.IsTrue(File.Exists(temp));
+
+                using (FileStream stream = File.OpenRead(temp))
+                    osu.Dependencies.Get<BeatmapDatabase>().Import(temp);
+
+                ensureLoaded(osu);
+
+                Assert.IsTrue(File.Exists(temp));
+                
+                File.Delete(temp);
+
+                Assert.IsFalse(File.Exists(temp));
+            }
+        }
+
+        private string prepareTempCopy(string path)
+        {
+            var temp = Path.GetTempFileName();
+            return new FileInfo(osz_path).CopyTo(temp, true).FullName;
+        }
+
         private OsuGameBase loadOsu(GameHost host)
         {
             var osu = new OsuGameBase();

osu.Game/Beatmaps/Drawables/BeatmapGroup.cs

@@ -64,7 +64,7 @@ namespace osu.Game.Beatmaps.Drawables
             BeatmapSet = beatmapSet;
             WorkingBeatmap beatmap = database.GetWorkingBeatmap(BeatmapSet.Beatmaps.FirstOrDefault());
             foreach (var b in BeatmapSet.Beatmaps)
-                b.StarDifficulty = (float)(database.GetWorkingBeatmap(b).Beatmap?.CalculateStarDifficulty() ?? 0);
+                b.StarDifficulty = (float)(database.GetWorkingBeatmap(b).Beatmap?.CalculateStarDifficulty() ?? -1f);
 
             Header = new BeatmapSetHeader(beatmap)
             {

osu.Game/Beatmaps/Drawables/BeatmapPanel.cs

@@ -83,10 +83,10 @@ namespace osu.Game.Beatmaps.Drawables
                     ColourLight = OsuColour.FromHex(@"3a7285"),
                     ColourDark = OsuColour.FromHex(@"123744")
                 },
-                new FlowContainer
+                new FillFlowContainer
                 {
                     Padding = new MarginPadding(5),
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     AutoSizeAxes = Axes.Both,
                     Anchor = Anchor.CentreLeft,
                     Origin = Anchor.CentreLeft,
@@ -98,18 +98,18 @@ namespace osu.Game.Beatmaps.Drawables
                             Anchor = Anchor.CentreLeft,
                             Origin = Anchor.CentreLeft,
                         },
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             Padding = new MarginPadding { Left = 5 },
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
                             AutoSizeAxes = Axes.Both,
                             Children = new Drawable[]
                             {
-                                new FlowContainer
+                                new FillFlowContainer
                                 {
-                                    Direction = FlowDirections.Horizontal,
+                                    Direction = FillDirection.Right,
-                                    AutoSizeAxes = Axes.Both,
                                     Spacing = new Vector2(4, 0),
+                                    AutoSizeAxes = Axes.Both,
                                     Children = new[]
                                     {
                                         new OsuSpriteText

osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs

@@ -24,7 +24,7 @@ namespace osu.Game.Beatmaps.Drawables
         private OsuConfigManager config;
         private Bindable<bool> preferUnicode;
         private WorkingBeatmap beatmap;
-        private FlowContainer difficultyIcons;
+        private FillFlowContainer difficultyIcons;
 
         public BeatmapSetHeader(WorkingBeatmap beatmap)
         {
@@ -36,9 +36,9 @@ namespace osu.Game.Beatmaps.Drawables
                 {
                     RelativeSizeAxes = Axes.Both,
                 },
-                new FlowContainer
+                new FillFlowContainer
                 {
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
                     Padding = new MarginPadding { Top = 5, Left = 18, Right = 10, Bottom = 10 },
                     AutoSizeAxes = Axes.Both,
                     Children = new[]
@@ -52,13 +52,12 @@ namespace osu.Game.Beatmaps.Drawables
                         },
                         artist = new OsuSpriteText
                         {
-                            Margin = new MarginPadding { Top = -1 },
                             Font = @"Exo2.0-SemiBoldItalic",
                             Text = beatmap.BeatmapSetInfo.Metadata.Artist,
                             TextSize = 17,
                             Shadow = true,
                         },
-                        difficultyIcons = new FlowContainer
+                        difficultyIcons = new FillFlowContainer
                         {
                             Margin = new MarginPadding { Top = 5 },
                             AutoSizeAxes = Axes.Both,
@@ -109,10 +108,10 @@ namespace osu.Game.Beatmaps.Drawables
 
                 Children = new[]
                 {
-                    new FlowContainer
+                    new FillFlowContainer
                     {
                         Depth = -1,
-                        Direction = FlowDirections.Horizontal,
+                        Direction = FillDirection.Right,
                         RelativeSizeAxes = Axes.Both,
                         // This makes the gradient not be perfectly horizontal, but diagonal at a ~40° angle
                         Shear = new Vector2(0.8f, 0),

osu.Game/Database/BeatmapDatabase.cs

@@ -116,13 +116,61 @@ namespace osu.Game.Database
             connection.DeleteAll<BeatmapInfo>();
         }
 
+        /// <summary>
+        /// Import multiple <see cref="BeatmapSetInfo"/> from <paramref name="paths"/>.
+        /// </summary>
+        /// <param name="paths">Multiple locations on disk</param>
         public void Import(IEnumerable<string> paths)
         {
+            Stack<BeatmapSetInfo> sets = new Stack<BeatmapSetInfo>();
+
             foreach (string p in paths)
-                Import(p);
+                try
+                {
+                    BeatmapSetInfo set = getBeatmapSet(p);
+
+                    //If we have an ID then we already exist in the database.
+                    if (set.ID == 0)
+                        sets.Push(set);
+
+                    // We may or may not want to delete the file depending on where it is stored.
+                    //  e.g. reconstructing/repairing database with beatmaps from default storage.
+                    // Also, not always a single file, i.e. for LegacyFilesystemReader
+                    // TODO: Add a check to prevent files from storage to be deleted.
+                    try
+                    {
+                        File.Delete(p);
+                    }
+                    catch (Exception e)
+                    {
+                        Logger.Error(e, $@"Could not delete file at {p}");
+                    }
+                }
+                catch (Exception e)
+                {
+                    e = e.InnerException ?? e;
+                    Logger.Error(e, $@"Could not import beatmap set");
+                }
+            
+            // Batch commit with multiple sets to database
+            Import(sets);
         }
 
+        /// <summary>
+        /// Import <see cref="BeatmapSetInfo"/> from <paramref name="path"/>.
+        /// </summary>
+        /// <param name="path">Location on disk</param>
         public void Import(string path)
+        {
+            Import(new [] { path });
+        }
+
+        /// <summary>
+        /// Duplicates content from <paramref name="path"/> to storage and returns a representing <see cref="BeatmapSetInfo"/>.
+        /// </summary>
+        /// <param name="path">Content location</param>
+        /// <returns><see cref="BeatmapSetInfo"/></returns>
+        private BeatmapSetInfo getBeatmapSet(string path)
         {
             string hash = null;
 
@@ -156,7 +204,7 @@ namespace osu.Game.Database
                     BeatmapSetAdded?.Invoke(existing);
                 }
 
-                return;
+                return existing;
             }
 
             var beatmapSet = new BeatmapSetInfo
@@ -172,7 +220,6 @@ namespace osu.Game.Database
             {
                 string[] mapNames = reader.BeatmapFilenames;
                 foreach (var name in mapNames)
-                {
                     using (var stream = new StreamReader(reader.GetStream(name)))
                     {
                         var decoder = BeatmapDecoder.GetDecoder(stream);
@@ -184,11 +231,10 @@ namespace osu.Game.Database
 
                         beatmapSet.Beatmaps.Add(beatmap.BeatmapInfo);
                     }
-                    beatmapSet.StoryboardFile = reader.StoryboardFilename;
+                beatmapSet.StoryboardFile = reader.StoryboardFilename;
-                }
             }
 
-            Import(new[] { beatmapSet });
+            return beatmapSet;
         }
 
         public void Import(IEnumerable<BeatmapSetInfo> beatmapSets)

osu.Game/Database/BeatmapInfo.cs

@@ -88,7 +88,7 @@ namespace osu.Game.Database
             return ID == other?.ID;
         }
 
-        public bool AudioEquals(BeatmapInfo other) => other != null &&
+        public bool AudioEquals(BeatmapInfo other) => other != null && BeatmapSet != null && other.BeatmapSet != null &&
             BeatmapSet.Path == other.BeatmapSet.Path &&
             (Metadata ?? BeatmapSet.Metadata).AudioFile == (other.Metadata ?? other.BeatmapSet.Metadata).AudioFile;
     }

osu.Game/Graphics/Backgrounds/Triangles.cs

@@ -10,7 +10,6 @@ using osu.Framework.MathUtils;
 using OpenTK;
 using OpenTK.Graphics;
 using System;
-using osu.Framework.Graphics.Colour;
 
 namespace osu.Game.Graphics.Backgrounds
 {

osu.Game/Graphics/TextAwesome.cs

@@ -902,6 +902,6 @@ namespace osu.Game.Graphics
         fa_osu_mod_spunout = 0xe046,
         fa_osu_mod_suddendeath = 0xe047,
         fa_osu_mod_target = 0xe048,
-        fa_osu_mod_bg = 0xe049,
+        fa_osu_mod_bg = 0xe04a,
     }
 }

osu.Game/Graphics/UserInterface/DialogButton.cs

@@ -13,17 +13,15 @@ using osu.Game.Graphics;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Graphics.UserInterface
 {
-    public class PauseButton : ClickableContainer
+    public class DialogButton : ClickableContainer
     {
         private const float hover_width = 0.9f;
         private const float hover_duration = 500;
         private const float glow_fade_duration = 250;
         private const float click_duration = 200;
 
-        private Color4 backgroundColour = OsuColour.Gray(34);
-
         private Color4 buttonColour;
         public Color4 ButtonColour
         {
@@ -35,8 +33,21 @@ namespace osu.Game.Overlays.Pause
             {
                 buttonColour = value;
                 updateGlow();
-                if (colourContainer == null) return;
+                colourContainer.Colour = value;
-                colourContainer.Colour = ButtonColour;
+            }
+        }
+
+        private Color4 backgroundColour = OsuColour.Gray(34);
+        public Color4 BackgroundColour
+        {
+            get
+            {
+                return backgroundColour;
+            }
+            set
+            {
+                backgroundColour = value;
+                background.Colour = value;
             }
         }
 
@@ -50,16 +61,30 @@ namespace osu.Game.Overlays.Pause
             set
             {
                 text = value;
-                if (spriteText == null) return;
                 spriteText.Text = Text;
             }
         }
 
+        private float textSize = 28;
+        internal float TextSize
+        {
+            get
+            {
+                return textSize;
+            }
+            set
+            {
+                textSize = value;
+                spriteText.TextSize = value;
+            }
+        }
+
         public SampleChannel SampleClick, SampleHover;
 
         private Container backgroundContainer, colourContainer, glowContainer;
-        private Box leftGlow, centerGlow, rightGlow;
+        private Box leftGlow, centerGlow, rightGlow, background;
         private SpriteText spriteText;
+        private Vector2 hoverSpacing => new Vector2(3f, 0f);
 
         private bool didClick; // Used for making sure that the OnMouseDown animation can call instead of OnHoverLost's when clicking
 
@@ -85,8 +110,9 @@ namespace osu.Game.Overlays.Pause
 
         protected override bool OnHover(Framework.Input.InputState state)
         {
+            spriteText.TransformSpacingTo(hoverSpacing, hover_duration, EasingTypes.OutElastic);
+
             colourContainer.ResizeTo(new Vector2(hover_width, 1f), hover_duration, EasingTypes.OutElastic);
-            spriteText.TransformSpacingTo(new Vector2(3f, 0f), hover_duration, EasingTypes.OutElastic);
             glowContainer.FadeIn(glow_fade_duration, EasingTypes.Out);
             SampleHover?.Play();
             return true;
@@ -127,8 +153,10 @@ namespace osu.Game.Overlays.Pause
             rightGlow.ColourInfo = ColourInfo.GradientHorizontal(ButtonColour, new Color4(ButtonColour.R, ButtonColour.G, ButtonColour.B, 0f));
         }
 
-        public PauseButton()
+        public DialogButton()
         {
+            RelativeSizeAxes = Axes.X;
+
             Children = new Drawable[]
             {
                 backgroundContainer = new Container
@@ -137,12 +165,12 @@ namespace osu.Game.Overlays.Pause
                     Width = 1f,
                     Children = new Drawable[]
                     {
-                        new Box
+                        background = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = backgroundColour
+                            Colour = backgroundColour,
-                        }
+                        },
-                    }
+                    },
                 },
                 glowContainer = new Container
                 {
@@ -156,23 +184,23 @@ namespace osu.Game.Overlays.Pause
                             RelativeSizeAxes = Axes.Both,
                             Origin = Anchor.TopLeft,
                             Anchor = Anchor.TopLeft,
-                            Width = 0.125f
+                            Width = 0.125f,
                         },
                         centerGlow = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
                             Origin = Anchor.Centre,
                             Anchor = Anchor.Centre,
-                            Width = 0.75f
+                            Width = 0.75f,
                         },
                         rightGlow = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
                             Origin = Anchor.TopRight,
                             Anchor = Anchor.TopRight,
-                            Width = 0.125f
+                            Width = 0.125f,
-                        }
+                        },
-                    }
+                    },
                 },
                 new Container
                 {
@@ -194,7 +222,7 @@ namespace osu.Game.Overlays.Pause
                             {
                                 Type = EdgeEffectType.Shadow,
                                 Colour = Color4.Black.Opacity(0.2f),
-                                Radius = 5
+                                Radius = 5,
                             },
                             Colour = ButtonColour,
                             Shear = new Vector2(0.2f, 0),
@@ -203,7 +231,7 @@ namespace osu.Game.Overlays.Pause
                                 new Box
                                 {
                                     EdgeSmoothness = new Vector2(2, 0),
-                                    RelativeSizeAxes = Axes.Both
+                                    RelativeSizeAxes = Axes.Both,
                                 },
                                 new Container
                                 {
@@ -217,13 +245,13 @@ namespace osu.Game.Overlays.Pause
                                             RelativeSizeAxes = Axes.Both,
                                             TriangleScale = 4,
                                             ColourDark = OsuColour.Gray(0.88f),
-                                            Shear = new Vector2(-0.2f, 0)
+                                            Shear = new Vector2(-0.2f, 0),
-                                        }
+                                        },
-                                    }
+                                    },
                                 },
-                            }
+                            },
-                        }
+                        },
-                    }
+                    },
                 },
                 spriteText = new OsuSpriteText
                 {
@@ -234,8 +262,8 @@ namespace osu.Game.Overlays.Pause
                     Font = "Exo2.0-Bold",
                     Shadow = true,
                     ShadowColour = new Color4(0, 0, 0, 0.1f),
-                    Colour = Color4.White
+                    Colour = Color4.White,
-                }
+                },
             };
 
             updateGlow();

osu.Game/Graphics/UserInterface/FocusedTextBox.cs

@@ -1,4 +1,7 @@
-using OpenTK.Graphics;
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK.Graphics;
 using OpenTK.Input;
 using osu.Framework.Input;
 using System;

osu.Game/Graphics/UserInterface/OsuDropDownMenuItem.cs

@@ -19,9 +19,9 @@ namespace osu.Game.Graphics.UserInterface
 
             Children = new[]
             {
-                new FlowContainer
+                new FillFlowContainer
                 {
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
                     Children = new Drawable[]

osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs

@@ -14,6 +14,8 @@ namespace osu.Game.Graphics.UserInterface
     {
         protected override Drawable GetDrawableCharacter(char c) => new PasswordMaskChar(CalculatedTextSize);
 
+        public override bool AllowClipboardExport => false;
+
         public class PasswordMaskChar : Container
         {
             private CircularContainer circle;

osu.Game/Graphics/UserInterface/StarCounter.cs

@@ -68,10 +68,10 @@ namespace osu.Game.Graphics.UserInterface
 
             Children = new Drawable[]
             {
-                stars = new FlowContainer<Star>
+                stars = new FillFlowContainer<Star>
                 {
                     AutoSizeAxes = Axes.Both,
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     Spacing = new Vector2(star_spacing),
                 }
             };

osu.Game/Graphics/UserInterface/TwoLayerButton.cs

@@ -57,10 +57,7 @@ namespace osu.Game.Graphics.UserInterface
                 c1.Origin = c1.Anchor = (value & Anchor.x2) > 0 ? Anchor.TopLeft : Anchor.TopRight;
                 c2.Origin = c2.Anchor = (value & Anchor.x2) > 0 ? Anchor.TopRight : Anchor.TopLeft;
 
-                Margin = new MarginPadding
+                X = (value & Anchor.x2) > 0 ? SIZE_RETRACTED.X * shear * 0.5f : 0;
-                {
-                    Right = (value & Anchor.x2) > 0 ? -SIZE_RETRACTED.X * shear * 0.5f : 0
-                };
 
                 c1.Depth = (value & Anchor.x2) > 0 ? 0 : 1;
                 c2.Depth = (value & Anchor.x2) > 0 ? 1 : 0;

osu.Game/Graphics/UserInterface/Volume/VolumeControl.cs

@@ -33,7 +33,7 @@ namespace osu.Game.Graphics.UserInterface.Volume
 
             Children = new Drawable[]
             {
-                new FlowContainer
+                new FillFlowContainer
                 {
                     AutoSizeAxes = Axes.Both,
                     Anchor = Anchor.BottomRight,

osu.Game/Modes/Mod.cs

@@ -0,0 +1,272 @@
+// 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.ComponentModel;
+using osu.Game.Graphics;
+
+namespace osu.Game.Modes
+{
+    /// <summary>
+    /// The base class for gameplay modifiers.
+    /// </summary>
+    public abstract class Mod
+    {
+        /// <summary>
+        /// The name of this mod.
+        /// </summary>
+        public abstract Mods Name { get; }
+
+        /// <summary>
+        /// The icon of this mod.
+        /// </summary>
+        public abstract FontAwesome Icon { get; }
+
+        /// <summary>
+        /// The user readable description of this mod.
+        /// </summary>
+        public abstract string Description { get; }
+
+        /// <summary>
+        /// The score multiplier of this mod.
+        /// </summary>
+        public abstract double ScoreMultiplier { get; }
+
+        /// <summary>
+        /// Returns if this mod is ranked.
+        /// </summary>
+        public abstract bool Ranked { get; }
+
+        /// <summary>
+        /// The mods this mod cannot be enabled with.
+        /// </summary>
+        public abstract Mods[] DisablesMods { get; }
+    }
+
+    public class MultiMod : Mod
+    {
+        public override Mods Name => Modes.Mods.None;
+        public override FontAwesome Icon => FontAwesome.fa_close;
+        public override string Description => @"";
+        public override double ScoreMultiplier => 0.0;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { };
+
+        public Mod[] Mods;
+    }
+
+    public abstract class ModNoFail : Mod
+    {
+        public override Mods Name => Mods.NoFail;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_nofail;
+        public override string Description => @"You can't fail, no matter what.";
+        public override double ScoreMultiplier => 0.5;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Relax, Mods.Autopilot, Mods.SuddenDeath, Mods.Perfect };
+    }
+
+    public abstract class ModEasy : Mod
+    {
+        public override Mods Name => Mods.Easy;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_easy;
+        public override string Description => @"Reduces overall difficulty - larger circles, more forgiving HP drain, less accuracy required.";
+        public override double ScoreMultiplier => 0.5;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.HardRock };
+    }
+
+    public abstract class ModHidden : Mod
+    {
+        public override Mods Name => Mods.Hidden;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_hidden;
+        public override bool Ranked => true;
+    }
+
+    public abstract class ModHardRock : Mod
+    {
+        public override Mods Name => Mods.HardRock;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_hardrock;
+        public override string Description => @"Everything just got a bit harder...";
+        public override Mods[] DisablesMods => new Mods[] { Mods.Easy };
+    }
+
+    public abstract class ModSuddenDeath : Mod
+    {
+        public override Mods Name => Mods.SuddenDeath;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_suddendeath;
+        public override string Description => @"Miss a note and fail.";
+        public override double ScoreMultiplier => 1;
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.NoFail, Mods.Relax, Mods.Autopilot, Mods.Autoplay, Mods.Cinema };
+    }
+
+    public abstract class ModDoubleTime : Mod
+    {
+        public override Mods Name => Mods.DoubleTime;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_doubletime;
+        public override string Description => @"Zoooooooooom";
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.HalfTime };
+    }
+
+    public abstract class ModRelax : Mod
+    {
+        public override Mods Name => Mods.Relax;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_relax;
+        public override double ScoreMultiplier => 0;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Autopilot, Mods.Autoplay, Mods.Cinema, Mods.NoFail, Mods.SuddenDeath, Mods.Perfect };
+    }
+
+    public abstract class ModHalfTime : Mod
+    {
+        public override Mods Name => Mods.HalfTime;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_halftime;
+        public override string Description => @"Less zoom";
+        public override bool Ranked => true;
+        public override Mods[] DisablesMods => new Mods[] { Mods.DoubleTime, Mods.Nightcore };
+    }
+
+    public abstract class ModNightcore : ModDoubleTime
+    {
+        public override Mods Name => Mods.Nightcore;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_nightcore;
+        public override string Description => @"uguuuuuuuu";
+    }
+
+    public abstract class ModFlashlight : Mod
+    {
+        public override Mods Name => Mods.Flashlight;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_flashlight;
+        public override string Description => @"Restricted view area.";
+        public override bool Ranked => true;
+    }
+
+    public class ModAutoplay : Mod
+    {
+        public override Mods Name => Mods.Autoplay;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_auto;
+        public override string Description => @"Watch a perfect automated play through the song";
+        public override double ScoreMultiplier => 0;
+        public override bool Ranked => false;
+        public override Mods[] DisablesMods => new Mods[] { Mods.Relax, Mods.Autopilot, Mods.SpunOut, Mods.SuddenDeath, Mods.Perfect };
+    }
+
+    public abstract class ModPerfect : ModSuddenDeath
+    {
+        public override Mods Name => Mods.Perfect;
+        public override FontAwesome Icon => FontAwesome.fa_close;
+        public override string Description => @"SS or quit.";
+    }
+
+    public class ModCinema : ModAutoplay
+    {
+        public override Mods Name => Mods.Cinema;
+        public override FontAwesome Icon => FontAwesome.fa_osu_mod_cinema;
+    }
+
+    [Flags]
+    public enum Mods
+    {
+        None = 0,
+
+        [Description(@"No Fail")]
+        NoFail = 1 << 0,
+
+        [Description(@"Easy")]
+        Easy = 1 << 1,
+
+        //NoVideo = 1 << 2,
+
+        [Description(@"Hidden")]
+        Hidden = 1 << 3,
+
+        [Description(@"Hard Rock")]
+        HardRock = 1 << 4,
+
+        [Description(@"Sudden Death")]
+        SuddenDeath = 1 << 5,
+
+        [Description(@"Double Time")]
+        DoubleTime = 1 << 6,
+
+        [Description(@"Relax")]
+        Relax = 1 << 7,
+
+        [Description(@"Halftime")]
+        HalfTime = 1 << 8,
+
+        [Description(@"Nightcore")]
+        Nightcore = 1 << 9,
+
+        [Description(@"Flashlight")]
+        Flashlight = 1 << 10,
+
+        [Description(@"Auto")]
+        Autoplay = 1 << 11,
+
+        [Description(@"Spun Out")]
+        SpunOut = 1 << 12,
+
+        [Description(@"Autopilot")]
+        Autopilot = 1 << 13,
+
+        [Description(@"Perfect")]
+        Perfect = 1 << 14,
+
+        [Description(@"4K")]
+        Key4 = 1 << 15,
+
+        [Description(@"5K")]
+        Key5 = 1 << 16,
+
+        [Description(@"6K")]
+        Key6 = 1 << 17,
+
+        [Description(@"7K")]
+        Key7 = 1 << 18,
+
+        [Description(@"8K")]
+        Key8 = 1 << 19,
+
+        [Description(@"Fade In")]
+        FadeIn = 1 << 20,
+
+        [Description(@"Random")]
+        Random = 1 << 21,
+
+        [Description(@"Cinema")]
+        Cinema = 1 << 22,
+
+        [Description(@"Target Practice")]
+        Target = 1 << 23,
+
+        [Description(@"9K")]
+        Key9 = 1 << 24,
+
+        [Description(@"Co-Op")]
+        KeyCoop = 1 << 25,
+
+        [Description(@"1K")]
+        Key1 = 1 << 26,
+
+        [Description(@"3K")]
+        Key3 = 1 << 27,
+
+        [Description(@"2K")]
+        Key2 = 1 << 28,
+
+        LastMod = 1 << 29,
+
+        KeyMod = Key1 | Key2 | Key3 | Key4 | Key5 | Key6 | Key7 | Key8 | Key9 | KeyCoop,
+        FreeModAllowed = NoFail | Easy | Hidden | HardRock | SuddenDeath | Flashlight | FadeIn | Relax | Autopilot | SpunOut | KeyMod,
+        ScoreIncreaseMods = Hidden | HardRock | DoubleTime | Flashlight | FadeIn
+    }
+
+    public enum ModType
+    {
+        DifficultyReduction,
+        DifficultyIncrease,
+        Special,
+    }
+}

osu.Game/Modes/Objects/HitObjectParser.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes.Objects
 {
     public abstract class HitObjectParser

osu.Game/Modes/Objects/NullHitObjectParser.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes.Objects
 {
     /// <summary>

osu.Game/Modes/Ruleset.cs

@@ -8,6 +8,7 @@ using System;
 using System.Collections.Concurrent;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
+using osu.Game.Overlays.Mods;
 
 namespace osu.Game.Modes
 {
@@ -26,6 +27,8 @@ namespace osu.Game.Modes
 
         public virtual IEnumerable<BeatmapStatistic> GetBeatmapStatistics(WorkingBeatmap beatmap) => new BeatmapStatistic[] { };
 
+        public abstract IEnumerable<Mod> GetModsFor(ModType type);
+
         public abstract ScoreProcessor CreateScoreProcessor(int hitObjectCount);
 
         public abstract HitRenderer CreateHitRendererWith(Beatmap beatmap);

osu.Game/Modes/Score.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Modes
 {
     public class Score

osu.Game/Modes/UI/HealthDisplay.cs

@@ -1,5 +1,5 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu-framework/master/LICENCE
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
 using osu.Framework.Allocation;

osu.Game/Modes/UI/ModIcon.cs

@@ -0,0 +1,85 @@
+// Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK.Graphics;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics;
+
+namespace osu.Game.Modes.UI
+{
+    public class ModIcon : Container
+    {
+        private TextAwesome modIcon, background;
+
+        private float iconSize = 80;
+        public float IconSize
+        {
+            get
+            {
+                return iconSize;
+            }
+            set
+            {
+                iconSize = value;
+                reapplySize();
+            }
+        }
+
+        private Color4 backgroundColour;
+        new public Color4 Colour
+        {
+            get
+            {
+                return backgroundColour;
+            }
+            set
+            {
+                backgroundColour = value;
+                background.Colour = value;
+            }
+        }
+
+        private FontAwesome icon;
+        public FontAwesome Icon
+        {
+            get
+            {
+                return icon;
+            }
+            set
+            {
+                icon = value;
+                modIcon.Icon = value;
+            }
+        }
+
+        private void reapplySize()
+        {
+            background.TextSize = iconSize;
+            modIcon.TextSize = iconSize - 35;
+        }
+
+        public ModIcon()
+        {
+            Children = new Drawable[]
+            {
+                background = new TextAwesome
+                {
+                    Origin = Anchor.Centre,
+                    Anchor = Anchor.Centre,
+                    Icon = FontAwesome.fa_osu_mod_bg,
+                    Shadow = true,
+                },
+                modIcon = new TextAwesome
+                {
+                    Origin = Anchor.Centre,
+                    Anchor = Anchor.Centre,
+                    Colour = OsuColour.Gray(84),
+                },
+            };
+
+            reapplySize();
+        }
+    }
+}

osu.Game/Online/API/IOnlineComponent.cs

@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-
 namespace osu.Game.Online.API
 {
     public interface IOnlineComponent

osu.Game/Online/Chat/Drawables/DrawableChannel.cs

@@ -15,7 +15,7 @@ namespace osu.Game.Online.Chat.Drawables
     public class DrawableChannel : Container
     {
         private readonly Channel channel;
-        private FlowContainer flow;
+        private FillFlowContainer flow;
         private ScrollContainer scroll;
 
         public DrawableChannel(Channel channel)
@@ -39,9 +39,9 @@ namespace osu.Game.Online.Chat.Drawables
                     RelativeSizeAxes = Axes.Both,
                     Children = new Drawable[]
                     {
-                        flow = new FlowContainer
+                        flow = new FillFlowContainer
                         {
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
                             RelativeSizeAxes = Axes.X,
                             AutoSizeAxes = Axes.Y,
                             Padding = new MarginPadding { Left = 20, Right = 20 }

osu.Game/OsuGame.cs

@@ -42,6 +42,8 @@ namespace osu.Game
 
         private NotificationManager notificationManager;
 
+        private DialogOverlay dialogOverlay;
+
         private Intro intro
         {
             get
@@ -142,6 +144,11 @@ namespace osu.Game
                 Origin = Anchor.TopRight,
             }).LoadAsync(this, overlayContent.Add);
 
+            (dialogOverlay = new DialogOverlay
+            {
+                Depth = -4,
+            }).LoadAsync(this, overlayContent.Add);
+
             Logger.NewEntry += entry =>
             {
                 if (entry.Level < LogLevel.Important) return;
@@ -155,6 +162,7 @@ namespace osu.Game
             Dependencies.Cache(options);
             Dependencies.Cache(musicController);
             Dependencies.Cache(notificationManager);
+            Dependencies.Cache(dialogOverlay);
 
             (Toolbar = new Toolbar
             {

osu.Game/Overlays/Dialog/PopupDialog.cs

@@ -0,0 +1,246 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.Input;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Backgrounds;
+using osu.Game.Graphics.Sprites;
+using OpenTK;
+using OpenTK.Graphics;
+using OpenTK.Input;
+
+namespace osu.Game.Overlays.Dialog
+{
+    public class PopupDialog : FocusedOverlayContainer
+    {
+        public static readonly float ENTER_DURATION = 500;
+        public static readonly float EXIT_DURATION = 200;
+        private readonly Vector2 ringSize = new Vector2(100f);
+        private readonly Vector2 ringMinifiedSize = new Vector2(20f);
+        private readonly Vector2 buttonsEnterSpacing = new Vector2(0f, 50f);
+
+        private Container content, ring;
+        private FillFlowContainer<PopupDialogButton> buttonsContainer;
+        private TextAwesome iconText;
+        private SpriteText header, body;
+
+        public FontAwesome Icon
+        {
+            get { return iconText.Icon; }
+            set { iconText.Icon = value; }
+        }
+
+        public string HeaderText
+        {
+            get { return header.Text; }
+            set { header.Text = value; }
+        }
+
+        public string BodyText
+        {
+            get { return body.Text; }
+            set { body.Text = value; }
+        }
+
+        public IEnumerable<PopupDialogButton> Buttons
+        {
+            get { return buttonsContainer.Children; }
+            set
+            {
+                buttonsContainer.Children = value;
+                foreach (PopupDialogButton b in value)
+                {
+                    var action = b.Action;
+                    b.Action = () =>
+                    {
+                        Hide();
+                        action?.Invoke();
+                    };
+                }
+            }
+        }
+
+        private void pressButtonAtIndex(int index)
+        {
+            if (index < Buttons.Count())
+                Buttons.Skip(index).First().TriggerClick();
+        }
+
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            if (args.Repeat) return false;
+
+            if (args.Key == Key.Enter)
+            {
+                Buttons.OfType<PopupDialogOkButton>().FirstOrDefault()?.TriggerClick();
+                return true;
+            }
+
+            // press button at number if 1-9 on number row or keypad are pressed
+            var k = args.Key;
+            if (k >= Key.Number1 && k <= Key.Number9)
+            {
+                pressButtonAtIndex(k - Key.Number1);
+                return true;
+            }
+
+            if (k >= Key.Keypad1 && k <= Key.Keypad9)
+            {
+                pressButtonAtIndex(k - Key.Keypad1);
+                return true;
+            }
+
+            return base.OnKeyDown(state, args);
+        }
+
+        protected override void PopIn()
+        {
+            base.PopIn();
+
+            // Reset various animations but only if the dialog animation fully completed
+            if (content.Alpha == 0)
+            {
+                buttonsContainer.TransformSpacingTo(buttonsEnterSpacing);
+                buttonsContainer.MoveToY(buttonsEnterSpacing.Y);
+                ring.ResizeTo(ringMinifiedSize);
+            }
+
+            content.FadeIn(ENTER_DURATION, EasingTypes.OutQuint);
+            ring.ResizeTo(ringSize, ENTER_DURATION, EasingTypes.OutQuint);
+            buttonsContainer.TransformSpacingTo(Vector2.Zero, ENTER_DURATION, EasingTypes.OutQuint);
+            buttonsContainer.MoveToY(0, ENTER_DURATION, EasingTypes.OutQuint);
+        }
+
+        protected override void PopOut()
+        {
+            base.PopOut();
+
+            content.FadeOut(EXIT_DURATION, EasingTypes.InSine);
+        }
+
+        public PopupDialog()
+        {
+            RelativeSizeAxes = Axes.Both;
+
+            Children = new Drawable[]
+            {
+                content = new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Anchor = Anchor.BottomCentre,
+                    Origin = Anchor.BottomCentre,
+                    Width = 0.4f,
+                    Alpha = 0f,
+                    Children = new Drawable[]
+                    {
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Masking = true,
+                            EdgeEffect = new EdgeEffect
+                            {
+                                Type = EdgeEffectType.Shadow,
+                                Colour = Color4.Black.Opacity(0.5f),
+                                Radius = 8,
+                            },
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Colour = OsuColour.FromHex(@"221a21"),
+                                },
+                                new Triangles
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    ColourLight = OsuColour.FromHex(@"271e26"),
+                                    ColourDark = OsuColour.FromHex(@"1e171e"),
+                                    TriangleScale = 4,
+                                },
+                            },
+                        },
+                        new FillFlowContainer
+                        {
+                            Anchor = Anchor.Centre,
+                            Origin = Anchor.BottomCentre,
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Position = new Vector2(0f, -50f),
+                            Direction = FillDirection.Down,
+                            Spacing = new Vector2(0f, 10f),
+                            Children = new Drawable[]
+                            {
+                                new Container
+                                {
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Size = ringSize,
+                                    Margin = new MarginPadding
+                                    {
+                                        Bottom = 30,
+                                    },
+                                    Children = new Drawable[]
+                                    {
+                                        ring = new CircularContainer
+                                        {
+                                            Origin = Anchor.Centre,
+                                            Anchor = Anchor.Centre,
+                                            BorderColour = Color4.White,
+                                            BorderThickness = 5f,
+                                            Children = new Drawable[]
+                                            {
+                                                new Box
+                                                {
+                                                    RelativeSizeAxes = Axes.Both,
+                                                    Colour = Color4.Black.Opacity(0),
+                                                },
+                                                iconText = new TextAwesome
+                                                {
+                                                    Origin = Anchor.Centre,
+                                                    Anchor = Anchor.Centre,
+                                                    Icon = FontAwesome.fa_close,
+                                                    TextSize = 50,
+                                                },
+                                            },
+                                        },
+                                    },
+                                },
+                                header = new OsuSpriteText
+                                {
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Text = @"Header",
+                                    TextSize = 25,
+                                    Shadow = true,
+                                },
+                                body = new OsuSpriteText
+                                {
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Text = @"Body",
+                                    TextSize = 18,
+                                    Shadow = true,
+                                },
+                            },
+                        },
+                        buttonsContainer = new FillFlowContainer<PopupDialogButton>
+                        {
+                            Anchor = Anchor.Centre,
+                            Origin = Anchor.TopCentre,
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Direction = FillDirection.Down,
+                        },
+                    },
+                },
+            };
+        }
+    }
+}

osu.Game/Overlays/Dialog/PopupDialogButton.cs

@@ -0,0 +1,20 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Game.Graphics;
+using osu.Game.Graphics.UserInterface;
+
+namespace osu.Game.Overlays.Dialog
+{
+    public class PopupDialogButton : DialogButton
+    {
+        public PopupDialogButton()
+        {
+            Height = 50;
+            BackgroundColour = OsuColour.FromHex(@"150e14");
+            TextSize = 18;
+        }
+    }
+}

osu.Game/Overlays/Dialog/PopupDialogCancelButton.cs

@@ -0,0 +1,20 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Dialog
+{
+    public class PopupDialogCancelButton : PopupDialogButton
+    {
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours, AudioManager audio)
+        {
+            ButtonColour = colours.Blue;
+            SampleHover = audio.Sample.Get(@"Menu/menuclick");
+            SampleClick = audio.Sample.Get(@"Menu/menuback");
+        }
+    }
+}

osu.Game/Overlays/Dialog/PopupDialogOKButton.cs

@@ -0,0 +1,20 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Dialog
+{
+    public class PopupDialogOkButton : PopupDialogButton
+    {
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours, AudioManager audio)
+        {
+            ButtonColour = colours.Pink;
+            SampleHover = audio.Sample.Get(@"Menu/menuclick");
+            SampleClick = audio.Sample.Get(@"Menu/menu-play-click");
+        }
+    }
+}

osu.Game/Overlays/DialogOverlay.cs

@@ -0,0 +1,82 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transforms;
+using osu.Game.Graphics;
+using osu.Game.Overlays.Dialog;
+using OpenTK.Graphics;
+
+namespace osu.Game.Overlays
+{
+    public class DialogOverlay : FocusedOverlayContainer
+    {
+        private Container dialogContainer;
+        private PopupDialog currentDialog;
+
+        public void Push(PopupDialog dialog)
+        {
+            if (dialog == currentDialog) return;
+
+            currentDialog?.Hide();
+            currentDialog = dialog;
+
+            dialogContainer.Add(currentDialog);
+
+            currentDialog.Show();
+            currentDialog.StateChanged += onDialogOnStateChanged;
+            State = Visibility.Visible;
+        }
+
+        private void onDialogOnStateChanged(OverlayContainer dialog, Visibility v)
+        {
+            if (v != Visibility.Hidden) return;
+
+            //handle the dialog being dismissed.
+            dialog.Delay(PopupDialog.EXIT_DURATION);
+            dialog.Expire();
+
+            if (dialog == currentDialog)
+                State = Visibility.Hidden;
+        }
+
+        protected override void PopIn()
+        {
+            base.PopIn();
+            FadeIn(PopupDialog.ENTER_DURATION, EasingTypes.OutQuint);
+        }
+
+        protected override void PopOut()
+        {
+            base.PopOut();
+            FadeOut(PopupDialog.EXIT_DURATION, EasingTypes.InSine);
+        }
+
+        public DialogOverlay()
+        {
+            RelativeSizeAxes = Axes.Both;
+
+            Children = new Drawable[]
+            {
+                new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Children = new Drawable[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Colour = Color4.Black.Opacity(0.5f),
+                        },
+                    },
+                },
+                dialogContainer = new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                },
+            };
+        }
+    }
+}

osu.Game/Overlays/Mods/AssistedSection.cs

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Mods
+{
+    public class AssistedSection : ModSection
+    {
+        protected override Key[] ToggleKeys => new Key[] { Key.Z, Key.X, Key.C, Key.V, Key.B, Key.N, Key.M };
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            Colour = colours.Blue;
+            SelectedColour = colours.BlueLight;
+        }
+
+        public AssistedSection()
+        {
+            Header = @"Assisted";
+        }
+    }
+}

osu.Game/Overlays/Mods/DifficultyIncreaseSection.cs

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Mods
+{
+    public class DifficultyIncreaseSection : ModSection
+    {
+        protected override Key[] ToggleKeys => new Key[] { Key.A, Key.S, Key.D, Key.F, Key.G, Key.H, Key.J, Key.K, Key.L };
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            Colour = colours.Yellow;
+            SelectedColour = colours.YellowLight;
+        }
+
+        public DifficultyIncreaseSection()
+        {
+            Header = @"Gameplay Difficulty Increase";
+        }
+    }
+}

osu.Game/Overlays/Mods/DifficultyReductionSection.cs

@@ -0,0 +1,26 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Game.Graphics;
+
+namespace osu.Game.Overlays.Mods
+{
+    public class DifficultyReductionSection : ModSection
+    {
+        protected override Key[] ToggleKeys => new Key[] { Key.Q, Key.W, Key.E, Key.R, Key.T, Key.Y, Key.U, Key.I, Key.O, Key.P };
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            Colour = colours.Green;
+            SelectedColour = colours.GreenLight;
+        }
+
+        public DifficultyReductionSection()
+        {
+            Header = @"Gameplay Difficulty Reduction";
+        }
+    }
+}

osu.Game/Overlays/Mods/ModButton.cs

@@ -0,0 +1,271 @@
+// Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using OpenTK;
+using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.Input;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Modes;
+using osu.Game.Modes.UI;
+
+namespace osu.Game.Overlays.Mods
+{
+    public class ModButton : FillFlowContainer
+    {
+        private ModIcon[] icons;
+        private ModIcon displayIcon => icons[icons.Length - 1];
+        private SpriteText text;
+        private Container iconsContainer;
+        private SampleChannel sampleOn, sampleOff;
+
+        public Action<Mod> Action; // Passed the selected mod or null if none
+
+        private int _selectedMod = -1;
+        private int selectedMod
+        {
+            get
+            {
+                return _selectedMod;
+            }
+            set
+            {
+                if (value == _selectedMod) return;
+                _selectedMod = value;
+
+                if (value >= Mods.Length)
+                {
+                    _selectedMod = -1;
+                }
+                else if (value <= -2)
+                {
+                    _selectedMod = Mods.Length - 1;
+                }
+
+                iconsContainer.RotateTo(Selected ? 5f : 0f, 300, EasingTypes.OutElastic);
+                iconsContainer.ScaleTo(Selected ? 1.1f : 1f, 300, EasingTypes.OutElastic);
+                for (int i = 0; i < icons.Length; i++)
+                {
+                    if (Selected && i == icons.Length - 1) icons[i].Colour = SelectedColour;
+                    else icons[i].Colour = Colour;
+                }
+
+                displaySelectedMod();
+            }
+        }
+
+        public bool Selected => selectedMod != -1;
+
+        private Color4 backgroundColour;
+        public new Color4 Colour
+        {
+            get
+            {
+                return backgroundColour;
+            }
+            set
+            {
+                if (value == backgroundColour) return;
+                backgroundColour = value;
+                foreach (ModIcon icon in icons)
+                {
+                    icon.Colour = value;
+                }
+            }
+        }
+
+        private Color4 selectedColour;
+        public Color4 SelectedColour
+        {
+            get
+            {
+                return selectedColour;
+            }
+            set
+            {
+                if (value == selectedColour) return;
+                selectedColour = value;
+                if (Selected) icons[0].Colour = value;
+            }
+        }
+
+        private Mod mod;
+        public Mod Mod
+        {
+            get
+            {
+                return mod;
+            }
+            set
+            {
+                if (mod == value) return;
+                mod = value;
+
+                if (mod is MultiMod)
+                {
+                    mods = ((MultiMod)mod).Mods;
+                }
+                else
+                {
+                    mods = new Mod[] { mod };
+                }
+
+                createIcons();
+                if (mods.Length > 0)
+                {
+                    displayMod(mods[0]);
+                }
+            }
+        }
+
+        private Mod[] mods;
+        public Mod[] Mods => mods; // the mods from Mod, only multiple if Mod is a MultiMod
+
+        public Mod SelectedMod => Mods.ElementAtOrDefault(selectedMod);
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            sampleOn = audio.Sample.Get(@"Checkbox/check-on");
+            sampleOff = audio.Sample.Get(@"Checkbox/check-off");
+        }
+
+        protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
+        {
+            (args.Button == MouseButton.Right ? (Action)SelectPrevious : SelectNext)();
+            return true;
+        }
+
+        public void SelectNext()
+        {
+            selectedMod++;
+            if (selectedMod == -1)
+            {
+                sampleOff.Play();
+            }
+            else
+            {
+                sampleOn.Play();
+            }
+
+            Action?.Invoke(SelectedMod);
+        }
+
+        public void SelectPrevious()
+        {
+            selectedMod--;
+            if (selectedMod == -1)
+            {
+                sampleOff.Play();
+            }
+            else
+            {
+                sampleOn.Play();
+            }
+
+            Action?.Invoke(SelectedMod);
+        }
+
+        public void Deselect()
+        {
+            selectedMod = -1;
+        }
+
+        private void displayMod(Mod mod)
+        {
+            displayIcon.Icon = mod.Icon;
+            text.Text = mod.Name.GetDescription();
+        }
+
+        private void displaySelectedMod()
+        {
+            var modIndex = selectedMod;
+            if (modIndex <= -1)
+            {
+                modIndex = 0;
+            }
+
+            displayMod(Mods[modIndex]);
+        }
+
+        private void createIcons()
+        {
+            if (Mods.Length > 1)
+            {
+                iconsContainer.Add(icons = new ModIcon[]
+                {
+                    new ModIcon
+                    {
+                        Origin = Anchor.Centre,
+                        Anchor = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,
+                        Position = new Vector2(1.5f),
+                    },
+                    new ModIcon
+                    {
+                        Origin = Anchor.Centre,
+                        Anchor = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,  
+                        Position = new Vector2(-1.5f),
+                    },
+                });
+            }
+            else
+            {
+                iconsContainer.Add(icons = new ModIcon[]
+                {
+                    new ModIcon
+                    {
+                        Origin = Anchor.Centre,
+                        Anchor = Anchor.Centre,
+                        AutoSizeAxes = Axes.Both,
+                    },
+                });
+            }
+        }
+
+        public ModButton(Mod m)
+        {
+            Direction = FillDirection.Down;
+            Spacing = new Vector2(0f, -5f);
+            Size = new Vector2(100f);
+
+            Children = new Drawable[]
+            {
+                new Container
+                {
+                    Size = new Vector2(77f, 80f),
+                    Origin = Anchor.TopCentre,
+                    Anchor = Anchor.TopCentre,
+                    Children = new Drawable[]
+                    {
+                        iconsContainer = new Container
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Origin = Anchor.Centre,
+                            Anchor = Anchor.Centre,
+                        }
+                    }
+                },
+                text = new OsuSpriteText
+                {
+                    Origin = Anchor.TopCentre,
+                    Anchor = Anchor.TopCentre,
+                    TextSize = 18,
+                },
+            };
+
+            Mod = m;
+        }
+    }
+}

osu.Game/Overlays/Mods/ModSection.cs

@@ -0,0 +1,176 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using OpenTK;
+using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Input;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Modes;
+
+namespace osu.Game.Overlays.Mods
+{
+    class AlwaysPresentFlowContainer : FillFlowContainer
+    {
+        public override bool IsPresent => true;
+    }
+
+    public class ModSection : Container
+    {
+        private OsuSpriteText headerLabel;
+
+        private AlwaysPresentFlowContainer buttonsContainer;
+        public FillFlowContainer ButtonsContainer => buttonsContainer;
+
+        public Action<Mod> Action;
+        protected virtual Key[] ToggleKeys => new Key[] { };
+
+        public Mod[] SelectedMods
+        {
+            get
+            {
+                List<Mod> selectedMods = new List<Mod>();
+
+                foreach (ModButton button in Buttons)
+                {
+                    Mod selectedMod = button.SelectedMod;
+                    if (selectedMod != null)
+                        selectedMods.Add(selectedMod);
+                }
+
+                return selectedMods.ToArray();
+            }
+        }
+
+        private string header;
+        public string Header
+        {
+            get
+            {
+                return header;
+            }
+            set
+            {
+                header = value;
+                headerLabel.Text = value;
+            }
+        }
+
+        private ModButton[] buttons = {};
+        public ModButton[] Buttons
+        {
+            get
+            {
+                return buttons;
+            }
+            set
+            {
+                if (value == buttons) return;
+                buttons = value;
+
+                foreach (ModButton button in value)
+                {
+                    button.Colour = Colour;
+                    button.SelectedColour = selectedColour;
+                    button.Action = buttonPressed;
+                }
+
+                buttonsContainer.Add(value);
+            }
+        }
+
+        private Color4 colour = Color4.White;
+        new public Color4 Colour
+        {
+            get
+            {
+                return colour;
+            }
+            set
+            {
+                if (value == colour) return;
+                colour = value;
+
+                foreach (ModButton button in buttons)
+                {
+                    button.Colour = value;
+                }
+            }
+        }
+
+        private Color4 selectedColour = Color4.White;
+        public Color4 SelectedColour
+        {
+            get
+            {
+                return selectedColour;
+            }
+            set
+            {
+                if (value == selectedColour) return;
+                selectedColour = value;
+
+                foreach (ModButton button in buttons)
+                {
+                    button.SelectedColour = value;
+                }
+            }
+        }
+
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            var index = Array.IndexOf(ToggleKeys, args.Key);
+            if (index > -1 && index < Buttons.Length)
+                Buttons[index].SelectNext();
+
+            return base.OnKeyDown(state, args);
+        }
+
+        public void DeselectAll()
+        {
+            foreach (ModButton button in buttons)
+            {
+                button.Deselect();
+            }
+        }
+
+        private void buttonPressed(Mod mod)
+        {
+            Action?.Invoke(mod);
+        }
+
+        public ModSection()
+        {
+            AutoSizeAxes = Axes.Y;
+
+            Children = new Drawable[]
+            {
+                headerLabel = new OsuSpriteText
+                {
+                    Origin = Anchor.TopLeft,
+                    Anchor = Anchor.TopLeft,
+                    Position = new Vector2(0f, 0f),
+                    Font = @"Exo2.0-Bold",
+                    Text = Header,
+                },
+                buttonsContainer = new AlwaysPresentFlowContainer
+                {
+                    AutoSizeAxes = Axes.Both,
+                    Origin = Anchor.BottomLeft,
+                    Anchor = Anchor.BottomLeft,
+                    Spacing = new Vector2(50f, 0f),
+                    Margin = new MarginPadding
+                    {
+                        Top = 6,
+                    },
+                },
+            };
+        }
+    }
+}

osu.Game/Overlays/Mods/ModSelectOverlay.cs

@@ -0,0 +1,369 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Configuration;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transforms;
+using osu.Framework.Allocation;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Backgrounds;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Modes;
+
+namespace osu.Game.Overlays.Mods
+{
+    public class ModSelectOverlay : WaveOverlayContainer
+    {
+        private const int button_duration = 700;
+        private const int ranked_multiplier_duration = 700;
+        private const float content_width = 0.8f;
+
+        private Color4 lowMultiplierColour, highMultiplierColour;
+
+        private OsuSpriteText rankedLabel, multiplierLabel;
+        private FillFlowContainer rankedMultiplerContainer;
+
+        private FillFlowContainer<ModSection> modSectionsContainer;
+
+        public Bindable<Mod[]> SelectedMods = new Bindable<Mod[]>();
+
+        public readonly Bindable<PlayMode> PlayMode = new Bindable<PlayMode>();
+
+        private void modeChanged(object sender, EventArgs eventArgs)
+        {
+            var ruleset = Ruleset.GetRuleset(PlayMode);
+
+            modSectionsContainer.Children = new ModSection[]
+            {
+                new DifficultyReductionSection
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Origin = Anchor.TopCentre,
+                    Anchor = Anchor.TopCentre,
+                    Action = modButtonPressed,
+                    Buttons = ruleset.GetModsFor(ModType.DifficultyReduction).Select(m => new ModButton(m)).ToArray(),
+                },
+                new DifficultyIncreaseSection
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Origin = Anchor.TopCentre,
+                    Anchor = Anchor.TopCentre,
+                    Action = modButtonPressed,
+                    Buttons = ruleset.GetModsFor(ModType.DifficultyIncrease).Select(m => new ModButton(m)).ToArray(),
+                },
+                new AssistedSection
+                {
+                    RelativeSizeAxes = Axes.X,
+                    Origin = Anchor.TopCentre,
+                    Anchor = Anchor.TopCentre,
+                    Action = modButtonPressed,
+                    Buttons = ruleset.GetModsFor(ModType.Special).Select(m => new ModButton(m)).ToArray(),
+                },
+            };
+        }
+
+        [BackgroundDependencyLoader(permitNulls:true)]
+        private void load(OsuColour colours, OsuGame osu)
+        {
+            lowMultiplierColour = colours.Red;
+            highMultiplierColour = colours.Green;
+
+            if (osu != null)
+                PlayMode.BindTo(osu.PlayMode);
+            PlayMode.ValueChanged += modeChanged;
+            PlayMode.TriggerChange();
+        }
+
+        protected override void PopOut()
+        {
+            base.PopOut();
+
+            rankedMultiplerContainer.MoveToX(rankedMultiplerContainer.DrawSize.X, APPEAR_DURATION, EasingTypes.InSine);
+            rankedMultiplerContainer.FadeOut(APPEAR_DURATION, EasingTypes.InSine);
+
+            foreach (ModSection section in modSectionsContainer.Children)
+            {
+                section.ButtonsContainer.TransformSpacingTo(new Vector2(100f, 0f), APPEAR_DURATION, EasingTypes.InSine);
+                section.ButtonsContainer.MoveToX(100f, APPEAR_DURATION, EasingTypes.InSine);
+                section.ButtonsContainer.FadeOut(APPEAR_DURATION, EasingTypes.InSine);
+            }
+
+            TriggerFocusLost();
+        }
+
+        protected override void PopIn()
+        {
+            base.PopIn();
+
+            rankedMultiplerContainer.MoveToX(0, ranked_multiplier_duration, EasingTypes.OutQuint);
+            rankedMultiplerContainer.FadeIn(ranked_multiplier_duration, EasingTypes.OutQuint);
+
+            foreach (ModSection section in modSectionsContainer.Children)
+            {
+                section.ButtonsContainer.TransformSpacingTo(new Vector2(50f, 0f), button_duration, EasingTypes.OutQuint);
+                section.ButtonsContainer.MoveToX(0, button_duration, EasingTypes.OutQuint);
+                section.ButtonsContainer.FadeIn(button_duration, EasingTypes.OutQuint);
+            }
+
+            Schedule(TriggerFocusContention);
+        }
+
+        public void DeselectAll()
+        {
+            foreach (ModSection section in modSectionsContainer.Children)
+            {
+                foreach (ModButton button in section.Buttons)
+                {
+                    button.Deselect();
+                }
+            }
+        }
+
+        public void DeselectMod(Modes.Mods modName)
+        {
+            foreach (ModSection section in modSectionsContainer.Children)
+            {
+                foreach (ModButton button in section.Buttons)
+                {
+                    foreach (Mod mod in button.Mods)
+                    {
+                        if (mod.Name == modName)
+                        {
+                            button.Deselect();
+                            return;
+                        }
+                    }
+                }
+            }
+        }
+
+        private void modButtonPressed(Mod selectedMod)
+        {
+            if (selectedMod != null)
+            {
+                foreach (Modes.Mods disableMod in selectedMod.DisablesMods)
+                {
+                    DeselectMod(disableMod);
+                }
+            }
+
+            refreshSelectedMods();
+
+            double multiplier = 1.0;
+            bool ranked = true;
+
+            foreach (Mod mod in SelectedMods.Value)
+            {
+                multiplier *= mod.ScoreMultiplier;
+
+                if (ranked)
+                    ranked = mod.Ranked;
+            }
+
+            // 1.00x
+            // 1.05x
+            // 1.20x
+
+            multiplierLabel.Text = string.Format("{0:N2}x", multiplier);
+            string rankedString = ranked ? "Ranked" : "Unranked";
+            rankedLabel.Text = $@"{rankedString}, Score Multiplier: ";
+
+            if (multiplier > 1.0)
+            {
+                multiplierLabel.FadeColour(highMultiplierColour, 200);
+            }
+            else if (multiplier < 1.0)
+            {
+                multiplierLabel.FadeColour(lowMultiplierColour, 200);
+            }
+            else
+            {
+                multiplierLabel.FadeColour(Color4.White, 200);
+            }
+        }
+
+        private void refreshSelectedMods()
+        {
+            List<Mod> selectedMods = new List<Mod>();
+
+            foreach (ModSection section in modSectionsContainer.Children)
+            {
+                foreach (Mod mod in section.SelectedMods)
+                {
+                    selectedMods.Add(mod);
+                }
+            }
+
+            SelectedMods.Value = selectedMods.ToArray();
+        }
+
+        public ModSelectOverlay()
+        {
+            FirstWaveColour = OsuColour.FromHex(@"19b0e2");
+            SecondWaveColour = OsuColour.FromHex(@"2280a2");
+            ThirdWaveColour = OsuColour.FromHex(@"005774");
+            FourthWaveColour = OsuColour.FromHex(@"003a4e");
+
+            Height = 510;
+            Content.RelativeSizeAxes = Axes.X;
+            Content.AutoSizeAxes = Axes.Y;
+            Children = new Drawable[]
+            {
+                new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Masking = true,
+                    Children = new Drawable[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Colour = new Color4(36, 50, 68, 255)
+                        },
+                        new Triangles
+                        {
+                            TriangleScale = 5,
+                            RelativeSizeAxes = Axes.X,
+                            Height = Height, //set the height from the start to ensure correct triangle density.
+                            ColourLight = new Color4(53, 66, 82, 255),
+                            ColourDark = new Color4(41, 54, 70, 255),
+                        },
+                    },
+                },
+                new FillFlowContainer
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Anchor = Anchor.BottomCentre,
+                    Origin = Anchor.BottomCentre,
+                    Direction = FillDirection.Down,
+                    Spacing = new Vector2(0f, 10f),
+                    Children = new Drawable[]
+                    {
+                        // Header
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            Height = 82,
+                            Origin = Anchor.TopCentre,
+                            Anchor = Anchor.TopCentre,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Colour = OsuColour.Gray(10).Opacity(100),
+                                },
+                                new FillFlowContainer
+                                {
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    RelativeSizeAxes = Axes.X,
+                                    AutoSizeAxes = Axes.Y,
+                                    Direction = FillDirection.Down,
+                                    Width = content_width,
+                                    Padding = new MarginPadding
+                                    {
+                                        Top = 10,
+                                        Bottom = 10,
+                                    },
+                                    Children = new Drawable[]
+                                    {
+                                        new OsuSpriteText
+                                        {
+                                            Font = @"Exo2.0-Bold",
+                                            Text = @"Gameplay Mods",
+                                            TextSize = 22,
+                                            Shadow = true,
+                                            Margin = new MarginPadding
+                                            {
+                                                Bottom = 4,
+                                            },
+                                        },
+                                        new OsuSpriteText
+                                        {
+                                            Text = @"Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play.",
+                                            TextSize = 18,
+                                            Shadow = true,
+                                        },
+                                        new OsuSpriteText
+                                        {
+                                            Text = @"Others are just for fun",
+                                            TextSize = 18,
+                                            Shadow = true,
+                                        },
+                                    },
+                                },
+                            },
+                        },
+                        // Body
+                        modSectionsContainer = new FillFlowContainer<ModSection>
+                        {
+                            Origin = Anchor.TopCentre,
+                            Anchor = Anchor.TopCentre,
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Spacing = new Vector2(0f, 10f),
+                            Width = content_width,
+                        },
+                        // Footer
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            Height = 70,
+                            Origin = Anchor.TopCentre,
+                            Anchor = Anchor.TopCentre,
+                            Children = new Drawable[]
+                            {
+                                new Box
+                                {
+                                    RelativeSizeAxes = Axes.Both,
+                                    Colour = new Color4(172, 20, 116, 255),
+                                    Alpha = 0.5f,
+                                },
+                                rankedMultiplerContainer = new FillFlowContainer
+                                {
+                                    Origin = Anchor.BottomCentre,
+                                    Anchor = Anchor.BottomCentre,
+                                    AutoSizeAxes = Axes.Y,
+                                    RelativeSizeAxes = Axes.X,
+                                    Width = content_width,
+                                    Direction = FillDirection.Right,
+                                    Padding = new MarginPadding
+                                    {
+                                        Top = 20,
+                                        Bottom = 20,
+                                    },
+                                    Children = new Drawable[]
+                                    {
+                                        rankedLabel = new OsuSpriteText
+                                        {
+                                            Text = @"Ranked, Score Multiplier: ",
+                                            TextSize = 30,
+                                            Shadow = true,
+                                        },
+                                        multiplierLabel = new OsuSpriteText
+                                        {
+                                            Font = @"Exo2.0-Bold",
+                                            Text = @"1.00x",
+                                            TextSize = 30,
+                                            Shadow = true,
+                                        },
+                                    },
+                                },
+                            },
+                        },
+                    },
+                },
+            };
+        }
+    }
+}

osu.Game/Overlays/NotificationManager.cs

@@ -44,9 +44,9 @@ namespace osu.Game.Overlays
                     Margin = new MarginPadding { Top = Toolbar.Toolbar.HEIGHT },
                     Children = new[]
                     {
-                        sections = new FlowContainer<NotificationSection>
+                        sections = new FillFlowContainer<NotificationSection>
                         {
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
                             AutoSizeAxes = Axes.Y,
                             RelativeSizeAxes = Axes.X,
                             Children = new []

osu.Game/Overlays/Notifications/NotificationSection.cs

@@ -16,7 +16,7 @@ using OpenTK;
 
 namespace osu.Game.Overlays.Notifications
 {
-    public class NotificationSection : FlowContainer
+    public class NotificationSection : FillFlowContainer
     {
         private OsuSpriteText titleText;
         private OsuSpriteText countText;
@@ -60,7 +60,7 @@ namespace osu.Game.Overlays.Notifications
         {
             RelativeSizeAxes = Axes.X;
             AutoSizeAxes = Axes.Y;
-            Direction = FlowDirections.Vertical;
+            Direction = FillDirection.Down;
 
             Padding = new MarginPadding
             {
@@ -85,7 +85,7 @@ namespace osu.Game.Overlays.Notifications
                             Origin = Anchor.TopRight,
                             Action = clearAll
                         },
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             Margin = new MarginPadding
                             {
@@ -110,7 +110,7 @@ namespace osu.Game.Overlays.Notifications
                         },
                     },
                 },
-                notifications = new FlowContainer<Notification>
+                notifications = new FillFlowContainer<Notification>
                 {
                     AutoSizeAxes = Axes.Y,
                     RelativeSizeAxes = Axes.X,

osu.Game/Overlays/Options/OptionDropDown.cs

@@ -14,7 +14,7 @@ using System.Collections.Generic;
 
 namespace osu.Game.Overlays.Options
 {
-    public class OptionDropDown<T> : FlowContainer
+    public class OptionDropDown<T> : FillFlowContainer
     {
         private DropDownMenu<T> dropdown;
         private SpriteText text;
@@ -89,7 +89,7 @@ namespace osu.Game.Overlays.Options
         {
             Items = new KeyValuePair<string, T>[0];
 
-            Direction = FlowDirections.Vertical;
+            Direction = FillDirection.Down;
             RelativeSizeAxes = Axes.X;
             AutoSizeAxes = Axes.Y;
             Children = new Drawable[]

osu.Game/Overlays/Options/OptionSlider.cs

@@ -12,7 +12,7 @@ using osu.Game.Graphics.UserInterface;
 
 namespace osu.Game.Overlays.Options
 {
-    public class OptionSlider<T> : FlowContainer where T : struct
+    public class OptionSlider<T> : FillFlowContainer where T : struct
     {
         private SliderBar<T> slider;
         private SpriteText text;
@@ -40,7 +40,6 @@ namespace osu.Game.Overlays.Options
 
         public OptionSlider()
         {
-            Direction = FlowDirections.Vertical;
             RelativeSizeAxes = Axes.X;
             AutoSizeAxes = Axes.Y;
             Padding = new MarginPadding { Right = 5 };

osu.Game/Overlays/Options/OptionsSection.cs

@@ -15,7 +15,7 @@ namespace osu.Game.Overlays.Options
 {
     public abstract class OptionsSection : Container
     {
-        protected FlowContainer FlowContent;
+        protected FillFlowContainer FlowContent;
         protected override Container<Drawable> Content => FlowContent;
 
         public abstract FontAwesome Icon { get; }
@@ -58,10 +58,10 @@ namespace osu.Game.Overlays.Options
                             TextSize = header_size,
                             Text = Header,
                         },
-                        FlowContent = new FlowContainer
+                        FlowContent = new FillFlowContainer
                         {
                             Margin = new MarginPadding { Top = header_size + header_margin },
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
                             Spacing = new Vector2(0, 30),
                             AutoSizeAxes = Axes.Y,
                             RelativeSizeAxes = Axes.X,

osu.Game/Overlays/Options/OptionsSubsection.cs

@@ -9,7 +9,7 @@ using osu.Game.Graphics.Sprites;
 
 namespace osu.Game.Overlays.Options
 {
-    public abstract class OptionsSubsection : FlowContainer
+    public abstract class OptionsSubsection : FillFlowContainer
     {
         private Container<Drawable> content;
         protected override Container<Drawable> Content => content;
@@ -20,7 +20,7 @@ namespace osu.Game.Overlays.Options
         {
             RelativeSizeAxes = Axes.X;
             AutoSizeAxes = Axes.Y;
-            Direction = FlowDirections.Vertical;
+            Direction = FillDirection.Down;
             AddInternal(new Drawable[]
             {
                 new OsuSpriteText
@@ -29,12 +29,12 @@ namespace osu.Game.Overlays.Options
                     Margin = new MarginPadding { Bottom = 10 },
                     Font = @"Exo2.0-Black",
                 },
-                content = new FlowContainer
+                content = new FillFlowContainer
                 {
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
+                    Spacing = new Vector2(0, 5),
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
-                    Spacing = new Vector2(0, 5),
                 },
             });
         }

osu.Game/Overlays/Options/Sections/EditorSection.cs

@@ -7,6 +7,7 @@ using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using OpenTK;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Overlays.Options.Sections
 {

osu.Game/Overlays/Options/Sections/General/LoginOptions.cs

@@ -84,7 +84,7 @@ namespace osu.Game.Overlays.Options.Sections.General
             }
         }
 
-        class LoginForm : FlowContainer
+        class LoginForm : FillFlowContainer
         {
             private TextBox username;
             private TextBox password;
@@ -100,10 +100,10 @@ namespace osu.Game.Overlays.Options.Sections.General
             private void load(APIAccess api, OsuConfigManager config)
             {
                 this.api = api;
-                Direction = FlowDirections.Vertical;
+                Direction = FillDirection.Down;
+                Spacing = new Vector2(0, 5);
                 AutoSizeAxes = Axes.Y;
                 RelativeSizeAxes = Axes.X;
-                Spacing = new Vector2(0, 5);
                 Children = new Drawable[]
                 {
                     username = new OsuTextBox
@@ -117,7 +117,8 @@ namespace osu.Game.Overlays.Options.Sections.General
                     {
                         PlaceholderText = "Password",
                         RelativeSizeAxes = Axes.X,
-                        TabbableContentContainer = this
+                        TabbableContentContainer = this,
+                        OnCommit = (TextBox sender, bool newText) => performLogin()
                     },
                     new OsuCheckbox
                     {

osu.Game/Overlays/Options/Sections/MaintenanceSection.cs

@@ -5,6 +5,7 @@ using osu.Framework.Graphics;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using OpenTK;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Overlays.Options.Sections
 {

osu.Game/Overlays/Options/Sections/SkinSection.cs

@@ -8,6 +8,7 @@ using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using OpenTK;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Overlays.Options.Sections
 {

osu.Game/Overlays/Options/Sidebar.cs

@@ -15,7 +15,7 @@ namespace osu.Game.Overlays.Options
 {
     public class Sidebar : Container
     {
-        private FlowContainer content;
+        private FillFlowContainer content;
         internal const float DEFAULT_WIDTH = ToolbarButton.WIDTH;
         internal const int EXPANDED_WIDTH = 200;
         protected override Container<Drawable> Content => content;
@@ -34,13 +34,13 @@ namespace osu.Game.Overlays.Options
                 {
                     Children = new []
                     {
-                        content = new FlowContainer
+                        content = new FillFlowContainer
                         {
                             Origin = Anchor.CentreLeft,
                             Anchor = Anchor.CentreLeft,
                             AutoSizeAxes = Axes.Y,
                             RelativeSizeAxes = Axes.X,
-                            Direction = FlowDirections.Vertical
+                            Direction = FillDirection.Down,
                         }
                     }
                 },

osu.Game/Overlays/OptionsOverlay.cs

@@ -73,11 +73,11 @@ namespace osu.Game.Overlays
                     Margin = new MarginPadding { Left = SIDEBAR_WIDTH },
                     Children = new[]
                     {
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             AutoSizeAxes = Axes.Y,
                             RelativeSizeAxes = Axes.X,
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
 
                             Children = new Drawable[]
                             {
@@ -94,11 +94,11 @@ namespace osu.Game.Overlays
                                     TextSize = 18,
                                     Margin = new MarginPadding { Left = CONTENT_MARGINS, Bottom = 30 },
                                 },
-                                new FlowContainer
+                                new FillFlowContainer
                                 {
                                     AutoSizeAxes = Axes.Y,
                                     RelativeSizeAxes = Axes.X,
-                                    Direction = FlowDirections.Vertical,
+                                    Direction = FillDirection.Down,
                                     Children = sections,
                                 }
                             }

osu.Game/Overlays/Toolbar/Toolbar.cs

@@ -41,9 +41,9 @@ namespace osu.Game.Overlays.Toolbar
             Children = new Drawable[]
             {
                 new ToolbarBackground(),
-                new FlowContainer
+                new FillFlowContainer
                 {
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     RelativeSizeAxes = Axes.Y,
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
@@ -55,7 +55,10 @@ namespace osu.Game.Overlays.Toolbar
                         },
                         modeSelector = new ToolbarModeSelector
                         {
-                            OnPlayModeChange = OnPlayModeChange
+                            OnPlayModeChange = (PlayMode mode) =>
+                            {
+                                OnPlayModeChange?.Invoke(mode);
+                            }
                         }
                     }
                 },
@@ -63,7 +66,7 @@ namespace osu.Game.Overlays.Toolbar
                 {
                     Anchor = Anchor.TopRight,
                     Origin = Anchor.TopRight,
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     RelativeSizeAxes = Axes.Y,
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
@@ -141,7 +144,7 @@ namespace osu.Game.Overlays.Toolbar
             FadeOut(transition_time);
         }
 
-        class PassThroughFlowContainer : FlowContainer
+        class PassThroughFlowContainer : FillFlowContainer
         {
             //needed to get input to the login overlay.
             public override bool Contains(Vector2 screenSpacePos) => true;

osu.Game/Overlays/Toolbar/ToolbarButton.cs

@@ -62,10 +62,10 @@ namespace osu.Game.Overlays.Toolbar
         protected TextAwesome DrawableIcon;
         protected SpriteText DrawableText;
         protected Box HoverBackground;
-        private FlowContainer tooltipContainer;
+        private FillFlowContainer tooltipContainer;
         private SpriteText tooltip1;
         private SpriteText tooltip2;
-        protected FlowContainer Flow;
+        protected FillFlowContainer Flow;
         private SampleChannel sampleClick;
 
         public ToolbarButton()
@@ -82,21 +82,21 @@ namespace osu.Game.Overlays.Toolbar
                     BlendingMode = BlendingMode.Additive,
                     Alpha = 0,
                 },
-                Flow = new FlowContainer
+                Flow = new FillFlowContainer
                 {
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
+                    Spacing = new Vector2(5),
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre,
                     Padding = new MarginPadding { Left = Toolbar.HEIGHT / 2, Right = Toolbar.HEIGHT / 2 },
-                    Spacing = new Vector2(5),
                     RelativeSizeAxes = Axes.Y,
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
                     {
                         DrawableIcon = new TextAwesome
                         {
-                            Anchor = Anchor.CentreLeft,
+                            Anchor = Anchor.Centre,
-                            Origin = Anchor.CentreLeft,
+                            Origin = Anchor.Centre,
                         },
                         DrawableText = new OsuSpriteText
                         {
@@ -105,9 +105,9 @@ namespace osu.Game.Overlays.Toolbar
                         },
                     },
                 },
-                tooltipContainer = new FlowContainer
+                tooltipContainer = new FillFlowContainer
                 {
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
                     RelativeSizeAxes = Axes.Both, //stops us being considered in parent's autosize
                     Anchor = (TooltipAnchor & Anchor.x0) > 0 ? Anchor.BottomLeft : Anchor.BottomRight,
                     Origin = TooltipAnchor,

osu.Game/Overlays/Toolbar/ToolbarModeSelector.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Overlays.Toolbar
     {
         const float padding = 10;
 
-        private FlowContainer modeButtons;
+        private FillFlowContainer modeButtons;
         private Drawable modeButtonLine;
         private ToolbarModeButton activeButton;
 
@@ -32,11 +32,11 @@ namespace osu.Game.Overlays.Toolbar
             Children = new Drawable[]
             {
                 new OpaqueBackground(),
-                modeButtons = new FlowContainer
+                modeButtons = new FillFlowContainer
                 {
                     RelativeSizeAxes = Axes.Y,
                     AutoSizeAxes = Axes.X,
-                    Direction = FlowDirections.Horizontal,
+                    Direction = FillDirection.Right,
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.TopCentre,
                     Padding = new MarginPadding { Left = padding, Right = padding },

osu.Game/Overlays/WaveOverlayContainer.cs

@@ -0,0 +1,201 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework;
+using OpenTK.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using OpenTK;
+using osu.Framework.Graphics.Transforms;
+
+namespace osu.Game.Overlays
+{
+    public abstract class WaveOverlayContainer : FocusedOverlayContainer
+    {
+        protected const float APPEAR_DURATION = 800;
+        protected const float DISAPPEAR_DURATION = 500;
+
+        private const EasingTypes easing_show = EasingTypes.OutSine;
+        private const EasingTypes easing_hide = EasingTypes.InSine;
+
+        private Wave firstWave, secondWave, thirdWave, fourthWave;
+
+        private Container<Wave> wavesContainer;
+
+        private readonly Container contentContainer;
+
+        protected override Container<Drawable> Content => contentContainer;
+
+        protected Color4 FirstWaveColour
+        {
+            get
+            {
+                return firstWave.Colour;
+            }
+            set
+            {
+                if (firstWave.Colour == value) return;
+                firstWave.Colour = value;
+            }
+        }
+
+        protected Color4 SecondWaveColour
+        {
+            get
+            {
+                return secondWave.Colour;
+            }
+            set
+            {
+                if (secondWave.Colour == value) return;
+                secondWave.Colour = value;
+            }
+        }
+
+        protected Color4 ThirdWaveColour
+        {
+            get
+            {
+                return thirdWave.Colour;
+            }
+            set
+            {
+                if (thirdWave.Colour == value) return;
+                thirdWave.Colour = value;
+            }
+        }
+
+        protected Color4 FourthWaveColour
+        {
+            get
+            {
+                return fourthWave.Colour;
+            }
+            set
+            {
+                if (fourthWave.Colour == value) return;
+                fourthWave.Colour = value;
+            }
+        }
+
+        protected WaveOverlayContainer()
+        {
+            Masking = true;
+
+            AddInternal(wavesContainer = new Container<Wave>
+            {
+                RelativeSizeAxes = Axes.Both,
+                Origin = Anchor.TopCentre,
+                Anchor = Anchor.TopCentre,
+                Children = new[]
+                {
+                    firstWave = new Wave
+                    {
+                        Rotation = 13,
+                        FinalPosition = -930,
+                    },
+                    secondWave = new Wave
+                    {
+                        Origin = Anchor.TopRight,
+                        Anchor = Anchor.TopRight,
+                        Rotation = -7,
+                        FinalPosition = -560,
+                    },
+                    thirdWave = new Wave
+                    {
+                        Rotation = 4,
+                        FinalPosition = -390,
+                    },
+                    fourthWave = new Wave
+                    {
+                        Origin = Anchor.TopRight,
+                        Anchor = Anchor.TopRight,
+                        Rotation = -2,
+                        FinalPosition = -220,
+                    },
+                },
+            });
+
+            AddInternal(contentContainer = new Container
+            {
+                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = Color4.White.Opacity(50),
+                    },
+                },
+            });
+        }
+
+        protected override void PopIn()
+        {
+            foreach (var w in wavesContainer.Children)
+                w.State = Visibility.Visible;
+
+            contentContainer.FadeIn(APPEAR_DURATION, EasingTypes.OutQuint);
+            contentContainer.MoveToY(0, APPEAR_DURATION, EasingTypes.OutQuint);
+        }
+
+        protected override void PopOut()
+        {
+            contentContainer.FadeOut(DISAPPEAR_DURATION, EasingTypes.In);
+            contentContainer.MoveToY(DrawHeight * 2f, DISAPPEAR_DURATION, EasingTypes.In);
+
+            foreach (var w in wavesContainer.Children)
+                w.State = Visibility.Hidden;
+        }
+
+        private class Wave : Container, IStateful<Visibility>
+        {
+            public float FinalPosition;
+
+            public Wave()
+            {
+                RelativeSizeAxes = Axes.Both;
+                Size = new Vector2(1.5f);
+                Masking = true;
+                EdgeEffect = new EdgeEffect
+                {
+                    Type = EdgeEffectType.Shadow,
+                    Colour = Color4.Black.Opacity(50),
+                    Radius = 20f,
+                };
+
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                    },
+                };
+            }
+
+            private Visibility state;
+            public Visibility State
+            {
+                get { return state; }
+                set
+                {
+                    state = value;
+
+                    switch (value)
+                    {
+                        case Visibility.Hidden:
+                            MoveToY(DrawHeight / Height, DISAPPEAR_DURATION, easing_hide);
+                            break;
+                        case Visibility.Visible:
+                            MoveToY(FinalPosition, APPEAR_DURATION, easing_show);
+                            break;
+                    }
+                }
+            }
+        }
+    }
+}

osu.Game/Screens/GameScreenWhiteBox.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Screens
 
         protected virtual IEnumerable<Type> PossibleChildren => null;
 
-        private FlowContainer childModeButtons;
+        private FillFlowContainer childModeButtons;
         private Container textContainer;
         private Box box;
 
@@ -124,9 +124,9 @@ namespace osu.Game.Screens
                         Exit();
                     }
                 },
-                childModeButtons = new FlowContainer
+                childModeButtons = new FillFlowContainer
                 {
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
                     Anchor = Anchor.TopRight,
                     Origin = Anchor.TopRight,
                     RelativeSizeAxes = Axes.Both,

osu.Game/Screens/Menu/Button.cs

@@ -114,7 +114,7 @@ namespace osu.Game.Screens.Menu
                         new OsuSpriteText
                         {
                             Shadow = true,
-                            Direction = FlowDirections.Horizontal,
+                            AllowMultiline = false,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                             TextSize = 16,
@@ -257,7 +257,8 @@ namespace osu.Game.Screens.Menu
 
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
-            if (args.Repeat) return false;
+            if (args.Repeat || state.Keyboard.ControlPressed || state.Keyboard.ShiftPressed || state.Keyboard.AltPressed)
+                return false;
 
             if (triggerKey == args.Key && triggerKey != Key.Unknown)
             {

osu.Game/Screens/Menu/ButtonSystem.cs

@@ -78,16 +78,16 @@ namespace osu.Game.Screens.Menu
                         },
                         buttonFlow = new FlowContainerWithOrigin
                         {
-                            Direction = FlowDirections.Horizontal,
+                            Direction = FillDirection.Right,
+                            Spacing = new Vector2(-WEDGE_WIDTH, 0),
                             Anchor = Anchor.Centre,
                             AutoSizeAxes = Axes.Both,
-                            Spacing = new Vector2(-WEDGE_WIDTH, 0),
                             Children = new[]
                             {
                                 settingsButton = new Button(@"settings", @"options", FontAwesome.fa_gear, new Color4(85, 85, 85, 255), () => OnSettings?.Invoke(), -WEDGE_WIDTH, Key.O),
                                 backButton = new Button(@"back", @"back", 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)
                                 }
                             },

osu.Game/Screens/Menu/Disclaimer.cs

@@ -27,12 +27,12 @@ namespace osu.Game.Screens.Menu
 
             Children = new Drawable[]
             {
-                new FlowContainer
+                new FillFlowContainer
                 {
                     AutoSizeAxes = Axes.Both,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
                     Spacing = new Vector2(0, 2),
                     Children = new Drawable[]
                     {

osu.Game/Screens/Menu/FlowContainerWithOrigin.cs

@@ -12,7 +12,7 @@ namespace osu.Game.Screens.Menu
     /// <summary>
     /// A flow container with an origin based on one of its contained drawables.
     /// </summary>
-    public class FlowContainerWithOrigin : FlowContainer
+    public class FlowContainerWithOrigin : FillFlowContainer
     {
         /// <summary>
         /// A target drawable which this flowcontainer should be centered around.
@@ -22,7 +22,7 @@ namespace osu.Game.Screens.Menu
 
         protected override IComparer<Drawable> DepthComparer => new ReverseCreationOrderDepthComparer();
 
-        protected override IEnumerable<Drawable> SortedChildren => base.SortedChildren.Reverse();
+        protected override IEnumerable<Drawable> FlowingChildren => base.FlowingChildren.Reverse();
 
         public override Anchor Origin => Anchor.Custom;
 

osu.Game/Screens/Menu/MainMenu.cs

@@ -13,6 +13,9 @@ using osu.Game.Screens.Direct;
 using osu.Game.Screens.Multiplayer;
 using OpenTK;
 using osu.Game.Screens.Select;
+using osu.Game.Screens.Tournament;
+using osu.Framework.Input;
+using OpenTK.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -97,5 +100,16 @@ namespace osu.Game.Screens.Menu
             Content.FadeOut(3000);
             return base.OnExiting(next);
         }
+
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            if (!args.Repeat && state.Keyboard.ControlPressed && state.Keyboard.ShiftPressed && args.Key == Key.D)
+            {
+                Push(new Drawings());
+                return true;
+            }
+
+            return base.OnKeyDown(state, args);
+        }
     }
 }

osu.Game/Screens/Play/KeyCounterCollection.cs

@@ -8,11 +8,11 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Screens.Play
 {
-    public class KeyCounterCollection : FlowContainer<KeyCounter>
+    public class KeyCounterCollection : FillFlowContainer<KeyCounter>
     {
         public KeyCounterCollection()
         {
-            Direction = FlowDirections.Horizontal;
+            Direction = FillDirection.Right;
             AutoSizeAxes = Axes.Both;
         }
 

osu.Game/Screens/Play/ModSelect.cs

@@ -1,26 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using osu.Framework.Screens;
-using osu.Game.Screens.Backgrounds;
-using OpenTK.Graphics;
-
-namespace osu.Game.Screens.Play
-{
-    class ModSelect : ScreenWhiteBox
-    {
-        protected override BackgroundScreen CreateBackground() => new BackgroundScreenCustom(@"Backgrounds/bg4");
-
-        protected override void OnEntering(Screen last)
-        {
-            base.OnEntering(last);
-            Background.Schedule(() => Background.FadeColour(Color4.DarkGray, 500));
-        }
-
-        protected override bool OnExiting(Screen next)
-        {
-            Background.Schedule(() => Background.FadeColour(Color4.White, 500));
-            return base.OnExiting(next);
-        }
-    }
-}

osu.Game/Screens/Play/Pause/PauseProgressBar.cs

@@ -1,15 +1,15 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using OpenTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Beatmaps;
 using osu.Framework.Graphics.Primitives;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Beatmaps;
+using OpenTK.Graphics;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play.Pause
 {
     public class PauseProgressBar : Container
     {

osu.Game/Screens/Play/Pause/PauseProgressGraph.cs

@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics.Containers;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play.Pause
 {
     public class PauseProgressGraph : Container
     {

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

@@ -1,14 +1,14 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using OpenTK.Graphics;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
-using osu.Game.Graphics;
+using osu.Game.Graphics.UserInterface;
+using OpenTK.Graphics;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play.Pause
 {
-    public class QuitButton : PauseButton
+    public class QuitButton : DialogButton
     {
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)

osu.Game/Screens/Play/Pause/ResumeButton.cs

@@ -4,10 +4,11 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Game.Graphics;
+using osu.Game.Graphics.UserInterface;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play.Pause
 {
-    public class ResumeButton : PauseButton
+    public class ResumeButton : DialogButton
     {
         [BackgroundDependencyLoader]
         private void load(AudioManager audio, OsuColour colours)

osu.Game/Screens/Play/Pause/RetryButton.cs

@@ -4,10 +4,11 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Game.Graphics;
+using osu.Game.Graphics.UserInterface;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play.Pause
 {
-    public class RetryButton : PauseButton
+    public class RetryButton : DialogButton
     {
         [BackgroundDependencyLoader]
         private void load(AudioManager audio, OsuColour colours)

osu.Game/Screens/Play/PauseOverlay.cs

@@ -2,19 +2,20 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
-using OpenTK;
-using OpenTK.Input;
-using OpenTK.Graphics;
-using osu.Game.Graphics;
-using osu.Framework.Input;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Transforms;
+using osu.Framework.Input;
+using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
+using osu.Game.Screens.Play.Pause;
+using OpenTK;
+using OpenTK.Graphics;
+using OpenTK.Input;
 
-namespace osu.Game.Overlays.Pause
+namespace osu.Game.Screens.Play
 {
     public class PauseOverlay : OverlayContainer
     {
@@ -66,7 +67,7 @@ namespace osu.Game.Overlays.Pause
             }
         }
 
-        private FlowContainer retryCounterContainer;
+        private FillFlowContainer retryCounterContainer;
 
         public override bool Contains(Vector2 screenSpacePos) => true;
         public override bool HandleInput => State == Visibility.Visible;
@@ -100,21 +101,21 @@ namespace osu.Game.Overlays.Pause
                     Colour = Color4.Black,
                     Alpha = background_alpha,
                 },
-                new FlowContainer
+                new FillFlowContainer
                 {
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y,
-                    Direction = FlowDirections.Vertical,
+                    Direction = FillDirection.Down,
-                    Spacing = new Vector2(0f, 50f),
+                    Spacing = new Vector2(0, 50),
                     Origin = Anchor.Centre,
                     Anchor = Anchor.Centre,
                     Children = new Drawable[]
                     {
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             AutoSizeAxes = Axes.Both,
-                            Direction = FlowDirections.Vertical,
+                            Direction = FillDirection.Down,
-                            Spacing = new Vector2(0f, 20f),
+                            Spacing = new Vector2(0, 20),
                             Origin = Anchor.TopCentre,
                             Anchor = Anchor.TopCentre,
                             Children = new Drawable[]
@@ -141,7 +142,7 @@ namespace osu.Game.Overlays.Pause
                                 }
                             }
                         },
-                        new FlowContainer
+                        new FillFlowContainer
                         {
                             RelativeSizeAxes = Axes.X,
                             AutoSizeAxes = Axes.Y,
@@ -156,7 +157,6 @@ namespace osu.Game.Overlays.Pause
                             {
                                 new ResumeButton
                                 {
-                                    RelativeSizeAxes = Axes.X,
                                     Origin = Anchor.TopCentre,
                                     Anchor = Anchor.TopCentre,
                                     Height = button_height,
@@ -164,7 +164,6 @@ namespace osu.Game.Overlays.Pause
                                 },
                                 new RetryButton
                                 {
-                                    RelativeSizeAxes = Axes.X,
                                     Origin = Anchor.TopCentre,
                                     Anchor = Anchor.TopCentre,
                                     Height = button_height,
@@ -176,7 +175,6 @@ namespace osu.Game.Overlays.Pause
                                 },
                                 new QuitButton
                                 {
-                                    RelativeSizeAxes = Axes.X,
                                     Origin = Anchor.TopCentre,
                                     Anchor = Anchor.TopCentre,
                                     Height = button_height,
@@ -188,7 +186,7 @@ namespace osu.Game.Overlays.Pause
                                 }
                             }
                         },
-                        retryCounterContainer = new FlowContainer
+                        retryCounterContainer = new FillFlowContainer
                         {
                             AutoSizeAxes = Axes.Both,
                             Origin = Anchor.TopCentre,

osu.Game/Screens/Play/Player.cs

@@ -16,7 +16,6 @@ using osu.Framework.Screens;
 using osu.Game.Modes.UI;
 using osu.Game.Screens.Ranking;
 using osu.Game.Configuration;
-using osu.Game.Overlays.Pause;
 using osu.Framework.Configuration;
 using System;
 using System.Linq;
@@ -152,7 +151,6 @@ namespace osu.Game.Screens.Play
                 playerInputManager = new PlayerInputManager(game.Host)
                 {
                     Clock = new InterpolatingFramedClock(sourceClock),
-                    PassThrough = false,
                     Children = new Drawable[]
                     {
                         hitRenderer,
@@ -196,7 +194,6 @@ namespace osu.Game.Screens.Play
             if (canPause || force)
             {
                 lastPauseActionTime = Time.Current;
-                playerInputManager.PassThrough = true;
                 scoreOverlay.KeyCounter.IsCounting = false;
                 pauseOverlay.Retries = RestartCount;
                 pauseOverlay.Show();
@@ -212,7 +209,6 @@ namespace osu.Game.Screens.Play
         public void Resume()
         {
             lastPauseActionTime = Time.Current;
-            playerInputManager.PassThrough = false;
             scoreOverlay.KeyCounter.IsCounting = true;
             pauseOverlay.Hide();
             sourceClock.Start();

osu.Game/Screens/Play/PlayerLoader.cs

@@ -131,12 +131,12 @@ namespace osu.Game.Screens.Play
                 AutoSizeAxes = Axes.Both;
                 Children = new Drawable[]
                 {
-                    new FlowContainer()
+                    new FillFlowContainer()
                     {
                         AutoSizeAxes = Axes.Both,
                         Origin = Anchor.TopCentre,
                         Anchor = Anchor.TopCentre,
-                        Direction = FlowDirections.Vertical,
+                        Direction = FillDirection.Down,
                         Children = new Drawable[]
                         {
                             new OsuSpriteText