From d7f9b8045cc99a153342527217246953c146401f Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Thu, 1 Oct 2020 21:33:54 +0900
Subject: [PATCH] Safeguard againts multiple ApplyResult() invocations

---
 osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
index f159d28eed..abfe7eb58c 100644
--- a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
+++ b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
@@ -469,6 +469,9 @@ namespace osu.Game.Rulesets.Objects.Drawables
         /// <param name="application">The callback that applies changes to the <see cref="JudgementResult"/>.</param>
         protected void ApplyResult(Action<JudgementResult> application)
         {
+            if (Result.HasResult)
+                throw new InvalidOperationException($"Cannot apply result on a hitobject that already has a result.");
+
             application?.Invoke(Result);
 
             if (!Result.HasResult)