Reduce complexity of instantiating circle pieces in hits.

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

@@ -12,24 +12,20 @@ public class DrawableCentreHit : DrawableHit
     {
         protected override Key[] HitKeys { get; } = { Key.F, Key.J };
 
-        private readonly CirclePiece circlePiece;
-
         public DrawableCentreHit(Hit hit)
             : base(hit)
         {
-            Add(circlePiece = new CirclePiece
-            {
-                Children = new[]
-                {
-                    new CentreHitSymbolPiece()
-                }
-            });
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            circlePiece.AccentColour = colours.PinkDarker;
+            Circle.AccentColour = colours.PinkDarker;
         }
+
+        protected override CirclePiece CreateCirclePiece() => new CirclePiece
+        {
+            Children = new[] { new CentreHitSymbolPiece() }
+        };
     }
 }

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

@@ -6,6 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Modes.Objects.Drawables;
 using osu.Game.Modes.Taiko.Judgements;
+using osu.Game.Modes.Taiko.Objects.Drawable.Pieces;
 using System;
 using System.Linq;
 
@@ -20,15 +21,17 @@ public abstract class DrawableHit : DrawableTaikoHitObject
 
         protected override Container<Framework.Graphics.Drawable> Content => bodyContainer;
 
+        protected readonly CirclePiece Circle;
+
         private readonly Hit hit;
 
+        private readonly Container bodyContainer;
+
         /// <summary>
         /// Whether the last key pressed is a valid hit key.
         /// </summary>
         private bool validKeyPressed;
 
-        private readonly Container bodyContainer;
-
         protected DrawableHit(Hit hit)
             : base(hit)
         {
@@ -38,6 +41,10 @@ protected DrawableHit(Hit hit)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
+                Children = new[]
+                {
+                    Circle = CreateCirclePiece()
+                }
             });
         }
 
@@ -100,5 +107,7 @@ protected override void UpdateState(ArmedState state)
 
             Expire();
         }
+
+        protected abstract CirclePiece CreateCirclePiece();
     }
 }

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

@@ -12,24 +12,20 @@ public class DrawableRimHit : DrawableHit
     {
         protected override Key[] HitKeys { get; } = { Key.D, Key.K };
 
-        private readonly CirclePiece circlePiece;
-
         public DrawableRimHit(Hit hit)
             : base(hit)
         {
-            Add(circlePiece = new CirclePiece
-            {
-                Children = new[]
-                {
-                    new RimHitSymbolPiece()
-                }
-            });
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            circlePiece.AccentColour = colours.BlueDarker;
+            Circle.AccentColour = colours.BlueDarker;
         }
+
+        protected override CirclePiece CreateCirclePiece() => new CirclePiece
+        {
+            Children = new[] { new RimHitSymbolPiece() }
+        };
     }
 }

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

@@ -12,24 +12,20 @@ public class DrawableStrongCentreHit : DrawableStrongHit
     {
         protected override Key[] HitKeys { get; } = { Key.F, Key.J };
 
-        private readonly CirclePiece circlePiece;
-
         public DrawableStrongCentreHit(Hit hit)
             : base(hit)
         {
-            Add(circlePiece = new StrongCirclePiece
-            {
-                Children = new []
-                {
-                    new CentreHitSymbolPiece()
-                }
-            });
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            circlePiece.AccentColour = colours.PinkDarker;
+            Circle.AccentColour = colours.PinkDarker;
         }
+
+        protected override CirclePiece CreateCirclePiece() => new StrongCirclePiece
+        {
+            Children = new[] { new CentreHitSymbolPiece() }
+        };
     }
 }

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

@@ -12,24 +12,20 @@ public class DrawableStrongRimHit : DrawableStrongHit
     {
         protected override Key[] HitKeys { get; } = { Key.D, Key.K };
 
-        private readonly CirclePiece circlePiece;
-
         public DrawableStrongRimHit(Hit hit)
             : base(hit)
         {
-            Add(circlePiece = new StrongCirclePiece
-            {
-                Children = new[]
-                {
-                    new RimHitSymbolPiece()
-                }
-            });
         }
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            circlePiece.AccentColour = colours.BlueDarker;
+            Circle.AccentColour = colours.BlueDarker;
         }
+
+        protected override CirclePiece CreateCirclePiece() => new StrongCirclePiece
+        {
+            Children = new[] { new RimHitSymbolPiece() }
+        };
     }
 }