Remove DrumRollCirclePiece, cleanup CirclePiece a bit.

osu.Desktop.VisualTests/Tests/TestCaseTaikoHitObjects.cs

@@ -92,22 +92,20 @@ namespace osu.Desktop.VisualTests.Tests
                 Position = new Vector2(350, 500)
             });
 
-            Add(new DrumRollCirclePiece(new CirclePiece
-            {
-                KiaiMode = kiai
-            })
+            Add(new CirclePiece
             {
+                Position = new Vector2(575, 100),
                 Width = 0.25f,
-                Position = new Vector2(575, 100)
+                AccentColour = Color4.Orange,
+                KiaiMode = kiai,
             });
 
-            Add(new DrumRollCirclePiece(new StrongCirclePiece
-            {
-                KiaiMode = kiai
-            })
+            Add(new StrongCirclePiece
             {
+                Position = new Vector2(575, 300),
                 Width = 0.25f,
-                Position = new Vector2(575, 300)
+                AccentColour = Color4.Orange,
+                KiaiMode = kiai
             });
         }
 

osu.Game.Modes.Taiko/Objects/Drawable/DrawableDrumRoll.cs

@@ -1,7 +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 OpenTK.Graphics;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.MathUtils;
+using osu.Game.Graphics;
 using osu.Game.Modes.Objects.Drawables;
 using osu.Game.Modes.Taiko.Judgements;
 using osu.Game.Modes.Taiko.Objects.Drawable.Pieces;
@@ -13,7 +17,10 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable
     {
         private readonly DrumRoll drumRoll;
 
-        private readonly DrumRollCirclePiece circle;
+        private readonly CirclePiece circle;
+
+        private Color4 baseColour;
+        private Color4 finalColour;
 
         public DrawableDrumRoll(DrumRoll drumRoll)
             : base(drumRoll)
@@ -23,7 +30,7 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable
             RelativeSizeAxes = Axes.X;
             Width = (float)(drumRoll.Duration / drumRoll.PreEmpt);
 
-            Add(circle = new DrumRollCirclePiece(CreateCirclePiece()));
+            Add(circle = CreateCirclePiece());
 
             foreach (var tick in drumRoll.Ticks)
             {
@@ -39,10 +46,11 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable
             }
         }
 
-        private void onTickJudgement(DrawableHitObject<TaikoHitObject, TaikoJudgement> obj)
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
         {
-            int countHit = NestedHitObjects.Count(o => o.Judgement.Result == HitResult.Hit);
-            circle.Completion = (float)countHit / NestedHitObjects.Count();
+            circle.Background.Colour = baseColour = colours.YellowDark;
+            finalColour = colours.YellowDarker;
         }
 
         protected override void LoadComplete()
@@ -56,6 +64,14 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable
             LifetimeEnd = drumRoll.EndTime + drumRoll.PreEmpt;
         }
 
+        private void onTickJudgement(DrawableHitObject<TaikoHitObject, TaikoJudgement> obj)
+        {
+            int countHit = NestedHitObjects.Count(o => o.Judgement.Result == HitResult.Hit);
+            float completion = (float)countHit / NestedHitObjects.Count();
+
+            circle.AccentColour = Interpolation.ValueAt(completion, baseColour, finalColour, 0, 1);
+        }
+
         protected override void CheckJudgement(bool userTriggered)
         {
             if (userTriggered)

osu.Game.Modes.Taiko/Objects/Drawable/Pieces/CirclePiece.cs

@@ -35,8 +35,7 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
             {
                 accentColour = value;
 
-                innerBackground.Colour = AccentColour;
-                triangles.Colour = AccentColour;
+                background.Colour = AccentColour;
 
                 resetEdgeEffects();
             }
@@ -66,10 +65,8 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
         protected override Container<Framework.Graphics.Drawable> Content => SymbolContainer;
         protected readonly Container SymbolContainer;
 
+        private readonly Container background;
         private readonly Container innerLayer;
-        private readonly Container innerCircleContainer;
-        private readonly Box innerBackground;
-        private readonly Triangles triangles;
 
         public CirclePiece()
         {
@@ -85,22 +82,22 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
                 RelativeSizeAxes = Axes.Y,
                 Children = new Framework.Graphics.Drawable[]
                 {
-                    innerCircleContainer = new CircularContainer
+                    background = new CircularContainer
                     {
-                        Name = "Inner Circle",
+                        Name = "Background",
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         RelativeSizeAxes = Axes.Both,
                         Masking = true,
                         Children = new Framework.Graphics.Drawable[]
                         {
-                            innerBackground = new Box
+                            new Box
                             {
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
                                 RelativeSizeAxes = Axes.Both,
                             },
-                            triangles = new Triangles
+                            new Triangles
                             {
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
@@ -149,7 +146,7 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
 
         private void resetEdgeEffects()
         {
-            innerCircleContainer.EdgeEffect = new EdgeEffect
+            background.EdgeEffect = new EdgeEffect
             {
                 Type = EdgeEffectType.Glow,
                 Colour = AccentColour,

osu.Game.Modes.Taiko/Objects/Drawable/Pieces/DrumRollCirclePiece.cs

@@ -1,57 +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 OpenTK;
-using OpenTK.Graphics;
-using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.MathUtils;
-using osu.Game.Graphics;
-
-namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
-{
-    /// <summary>
-    /// A circle piece used for drumrolls.
-    /// </summary>
-    public class DrumRollCirclePiece : Container
-    {
-        private float completion;
-        /// <summary>
-        /// The amount of the drumroll that has been completed, as a percentage of the number
-        /// of ticks in the drumroll. This determines the internal colour of the drumroll.
-        /// </summary>
-        public float Completion
-        {
-            get { return completion; }
-            set
-            {
-                completion = MathHelper.Clamp(value, 0, 1);
-
-                if (!IsLoaded)
-                    return;
-
-                circle.AccentColour = Interpolation.ValueAt(completion, baseColour, finalColour, 0, 1);
-            }
-        }
-
-        private readonly CirclePiece circle;
-
-        private Color4 baseColour;
-        private Color4 finalColour;
-
-        public DrumRollCirclePiece(CirclePiece piece)
-        {
-            RelativeSizeAxes = Axes.X;
-
-            Add(circle = piece);
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
-        {
-            circle.AccentColour = baseColour = colours.YellowDark;
-            finalColour = colours.YellowDarker;
-        }
-    }
-}

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

@@ -64,7 +64,6 @@
     <Compile Include="Objects\Drawable\DrawableDrumRollTick.cs" />
     <Compile Include="Objects\Drawable\DrawableSwell.cs" />
     <Compile Include="Objects\Drawable\DrawableTaikoHitObject.cs" />
-    <Compile Include="Objects\Drawable\Pieces\DrumRollCirclePiece.cs" />
     <Compile Include="Objects\Drawable\Pieces\RimHitSymbolPiece.cs" />
     <Compile Include="Objects\Drawable\Pieces\StrongCirclePiece.cs" />
     <Compile Include="Objects\Drawable\Pieces\CirclePiece.cs" />