Add parent hitobject to strong hits

osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs

@@ -109,12 +109,17 @@ namespace osu.Game.Rulesets.Taiko.Objects
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
 
-        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit { StartTime = startTime };
+        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit(this) { StartTime = startTime };
 
         public class StrongNestedHit : StrongNestedHitObject
         {
             // The strong hit of the drum roll doesn't actually provide any score.
             public override Judgement CreateJudgement() => new IgnoreJudgement();
+
+            public StrongNestedHit(TaikoHitObject parent)
+                : base(parent)
+            {
+            }
         }
 
         #region LegacyBeatmapEncoder

osu.Game.Rulesets.Taiko/Objects/DrumRollTick.cs

@@ -33,10 +33,14 @@ namespace osu.Game.Rulesets.Taiko.Objects
 
         public override double MaximumJudgementOffset => HitWindow;
 
-        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit { StartTime = startTime };
+        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit(this) { StartTime = startTime };
 
         public class StrongNestedHit : StrongNestedHitObject
         {
+            public StrongNestedHit(TaikoHitObject parent)
+                : base(parent)
+            {
+            }
         }
     }
 }

osu.Game.Rulesets.Taiko/Objects/Hit.cs

@@ -72,10 +72,14 @@ namespace osu.Game.Rulesets.Taiko.Objects
             }
         }
 
-        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit { StartTime = startTime };
+        protected override StrongNestedHitObject CreateStrongNestedHit(double startTime) => new StrongNestedHit(this) { StartTime = startTime };
 
         public class StrongNestedHit : StrongNestedHitObject
         {
+            public StrongNestedHit(TaikoHitObject parent)
+                : base(parent)
+            {
+            }
         }
     }
 }

osu.Game.Rulesets.Taiko/Objects/StrongNestedHitObject.cs

@@ -15,6 +15,13 @@ namespace osu.Game.Rulesets.Taiko.Objects
     /// </summary>
     public abstract class StrongNestedHitObject : TaikoHitObject
     {
+        public readonly TaikoHitObject Parent;
+
+        protected StrongNestedHitObject(TaikoHitObject parent)
+        {
+            Parent = parent;
+        }
+
         public override Judgement CreateJudgement() => new TaikoStrongJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;