From e8ab3cff3c38c5dad046b0c69f0f34b7478a08ce Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Thu, 6 Aug 2020 17:02:42 +0900
Subject: [PATCH] Add class constraint

---
 osu.Game/Rulesets/Mods/IApplicableToTrack.cs | 2 +-
 osu.Game/Rulesets/Mods/ModRateAdjust.cs      | 3 ++-
 osu.Game/Rulesets/Mods/ModTimeRamp.cs        | 3 ++-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/osu.Game/Rulesets/Mods/IApplicableToTrack.cs b/osu.Game/Rulesets/Mods/IApplicableToTrack.cs
index 5ae41fe09c..b29ba55942 100644
--- a/osu.Game/Rulesets/Mods/IApplicableToTrack.cs
+++ b/osu.Game/Rulesets/Mods/IApplicableToTrack.cs
@@ -11,6 +11,6 @@ namespace osu.Game.Rulesets.Mods
     /// </summary>
     public interface IApplicableToTrack : IApplicableMod
     {
-        void ApplyToTrack<T>(T track) where T : ITrack, IAdjustableAudioComponent;
+        void ApplyToTrack<T>(T track) where T : class, ITrack, IAdjustableAudioComponent;
     }
 }
diff --git a/osu.Game/Rulesets/Mods/ModRateAdjust.cs b/osu.Game/Rulesets/Mods/ModRateAdjust.cs
index e2c8ac64d9..4aee5affe9 100644
--- a/osu.Game/Rulesets/Mods/ModRateAdjust.cs
+++ b/osu.Game/Rulesets/Mods/ModRateAdjust.cs
@@ -12,7 +12,8 @@ namespace osu.Game.Rulesets.Mods
     {
         public abstract BindableNumber<double> SpeedChange { get; }
 
-        public virtual void ApplyToTrack<T>(T track) where T : ITrack, IAdjustableAudioComponent
+        public virtual void ApplyToTrack<T>(T track)
+            where T : class, ITrack, IAdjustableAudioComponent
         {
             track.AddAdjustment(AdjustableProperty.Tempo, SpeedChange);
         }
diff --git a/osu.Game/Rulesets/Mods/ModTimeRamp.cs b/osu.Game/Rulesets/Mods/ModTimeRamp.cs
index b6cbe72971..4b5241488f 100644
--- a/osu.Game/Rulesets/Mods/ModTimeRamp.cs
+++ b/osu.Game/Rulesets/Mods/ModTimeRamp.cs
@@ -51,7 +51,8 @@ namespace osu.Game.Rulesets.Mods
             AdjustPitch.BindValueChanged(applyPitchAdjustment);
         }
 
-        public void ApplyToTrack<T>(T track) where T : ITrack, IAdjustableAudioComponent
+        public void ApplyToTrack<T>(T track)
+            where T : class, ITrack, IAdjustableAudioComponent
         {
             this.track = track;