General cleanup.

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

@@ -49,7 +49,7 @@ public DrawableDrumRoll(DrumRoll drumRoll)
         protected override TaikoPiece CreateMainPiece() => new ElongatedCirclePiece(HitObject.IsStrong)
         {
             Length = (float)(HitObject.Duration / HitObject.ScrollTime),
-            PlayfieldLengthReference = () => Parent.DrawSize.X / DrawScale.X
+            PlayfieldLengthReference = () => Parent.DrawSize.X
         };
 
         [BackgroundDependencyLoader]

osu.Game.Modes.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs

@@ -22,7 +22,7 @@ public abstract class DrawableTaikoHitObject<TaikoHitType> : DrawableHitObject<T
         /// </summary>
         private readonly List<Key> validKeys = new List<Key>(new[] { Key.D, Key.F, Key.J, Key.K });
 
-        public override Vector2 OriginPosition => new Vector2(DrawHeight / 2f);
+        public override Vector2 OriginPosition => new Vector2(DrawHeight / 2);
 
         protected override Container<Drawable> Content => bodyContainer;
 

osu.Game.Modes.Taiko/UI/TaikoPlayfield.cs

@@ -215,6 +215,9 @@ public override void OnJudgement(DrawableHitObject<TaikoHitObject, TaikoJudgemen
                 hitExplosionContainer.Children.FirstOrDefault(e => e.Judgement == judgedObject.Judgement)?.VisualiseSecondHit();
         }
 
+        /// <summary>
+        /// Container for hit objects. Locks width to parent width even through scale.
+        /// </summary>
         private class HitObjectContainer : Container
         {
             public HitObjectContainer()