diff --git a/osu.Game.Rulesets.Osu/UI/IHitPolicy.cs b/osu.Game.Rulesets.Osu/UI/IHitPolicy.cs
new file mode 100644
index 0000000000..fcc18b5f6f
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/UI/IHitPolicy.cs
@@ -0,0 +1,25 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Osu.UI
+{
+    public interface IHitPolicy
+    {
+        /// <summary>
+        /// Determines whether a <see cref="DrawableHitObject"/> can be hit at a point in time.
+        /// </summary>
+        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to check.</param>
+        /// <param name="time">The time to check.</param>
+        /// <returns>Whether <paramref name="hitObject"/> can be hit at the given <paramref name="time"/>.</returns>
+        bool IsHittable(DrawableHitObject hitObject, double time);
+
+        /// <summary>
+        /// Handles a <see cref="HitObject"/> being hit.
+        /// </summary>
+        /// <param name="hitObject">The <see cref="HitObject"/> that was hit.</param>
+        void HandleHit(DrawableHitObject hitObject);
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/UI/StartTimeOrderedHitPolicy.cs b/osu.Game.Rulesets.Osu/UI/StartTimeOrderedHitPolicy.cs
index 2b13a36e47..2b5a440f67 100644
--- a/osu.Game.Rulesets.Osu/UI/StartTimeOrderedHitPolicy.cs
+++ b/osu.Game.Rulesets.Osu/UI/StartTimeOrderedHitPolicy.cs
@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.UI
     /// <item><description>The hit causes all previous <see cref="HitObject"/>s to missed otherwise.</description></item>
     /// </list>
     /// </summary>
-    public class StartTimeOrderedHitPolicy
+    public class StartTimeOrderedHitPolicy : IHitPolicy
     {
         private readonly HitObjectContainer hitObjectContainer;
 
@@ -27,12 +27,6 @@ namespace osu.Game.Rulesets.Osu.UI
             this.hitObjectContainer = hitObjectContainer;
         }
 
-        /// <summary>
-        /// Determines whether a <see cref="DrawableHitObject"/> can be hit at a point in time.
-        /// </summary>
-        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to check.</param>
-        /// <param name="time">The time to check.</param>
-        /// <returns>Whether <paramref name="hitObject"/> can be hit at the given <paramref name="time"/>.</returns>
         public bool IsHittable(DrawableHitObject hitObject, double time)
         {
             DrawableHitObject blockingObject = null;
@@ -54,10 +48,6 @@ namespace osu.Game.Rulesets.Osu.UI
             return blockingObject.Judged || time >= blockingObject.HitObject.StartTime;
         }
 
-        /// <summary>
-        /// Handles a <see cref="HitObject"/> being hit to potentially miss all earlier <see cref="HitObject"/>s.
-        /// </summary>
-        /// <param name="hitObject">The <see cref="HitObject"/> that was hit.</param>
         public void HandleHit(DrawableHitObject hitObject)
         {
             // Hitobjects which themselves don't block future hitobjects don't cause misses (e.g. slider ticks, spinners).
@@ -67,6 +57,7 @@ namespace osu.Game.Rulesets.Osu.UI
             if (!IsHittable(hitObject, hitObject.HitObject.StartTime + hitObject.Result.TimeOffset))
                 throw new InvalidOperationException($"A {hitObject} was hit before it became hittable!");
 
+            // Miss all hitobjects prior to the hit one.
             foreach (var obj in enumerateHitObjectsUpTo(hitObject.HitObject.StartTime))
             {
                 if (obj.Judged)