From f9883373bbd86eb0513968d6dd487b95f4ce759f Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 29 May 2020 16:11:26 +0900
Subject: [PATCH] Flip direction to avoid breaking other usages

---
 osu.Game/Rulesets/Objects/Types/IHasDuration.cs | 16 +++++++++++++---
 osu.Game/Rulesets/Objects/Types/IHasEndTime.cs  | 16 +++++++++++++++-
 2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/osu.Game/Rulesets/Objects/Types/IHasDuration.cs b/osu.Game/Rulesets/Objects/Types/IHasDuration.cs
index 2433f9597e..185fd5977b 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasDuration.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasDuration.cs
@@ -8,17 +8,27 @@ namespace osu.Game.Rulesets.Objects.Types
     /// <summary>
     /// A HitObject that ends at a different time than its start time.
     /// </summary>
-    public interface IHasDuration
+#pragma warning disable 618
+    public interface IHasDuration : IHasEndTime
+#pragma warning restore 618
     {
+        double IHasEndTime.EndTime
+        {
+            get => EndTime;
+            set => Duration = (Duration - EndTime) + value;
+        }
+
+        double IHasEndTime.Duration => Duration;
+
         /// <summary>
         /// The time at which the HitObject ends.
         /// </summary>
-        double EndTime { get; }
+        new double EndTime { get; }
 
         /// <summary>
         /// The duration of the HitObject.
         /// </summary>
         [JsonIgnore]
-        double Duration { get; set; }
+        new double Duration { get; set; }
     }
 }
diff --git a/osu.Game/Rulesets/Objects/Types/IHasEndTime.cs b/osu.Game/Rulesets/Objects/Types/IHasEndTime.cs
index 7395223c7e..c3769c5909 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasEndTime.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasEndTime.cs
@@ -2,11 +2,25 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using Newtonsoft.Json;
 
 namespace osu.Game.Rulesets.Objects.Types
 {
+    /// <summary>
+    /// A HitObject that ends at a different time than its start time.
+    /// </summary>
     [Obsolete("Use IHasDuration instead.")] // can be removed 20201126
-    public interface IHasEndTime : IHasDuration
+    public interface IHasEndTime
     {
+        /// <summary>
+        /// The time at which the HitObject ends.
+        /// </summary>
+        [JsonIgnore]
+        double EndTime { get; set; }
+
+        /// <summary>
+        /// The duration of the HitObject.
+        /// </summary>
+        double Duration { get; }
     }
 }