From 074d2a7a3a64cb09b566e51399450da57bbc455e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Acid=20Chicken=20=28=E7=A1=AB=E9=85=B8=E9=B6=8F=29?=
 <root@acid-chicken.com>
Date: Mon, 5 Sep 2022 02:01:44 +0900
Subject: [PATCH] chore(osu.Game): provide ordering index for `HitResult`

---
 osu.Game/Rulesets/Scoring/HitResult.cs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/osu.Game/Rulesets/Scoring/HitResult.cs b/osu.Game/Rulesets/Scoring/HitResult.cs
index 5047fdea82..8078363212 100644
--- a/osu.Game/Rulesets/Scoring/HitResult.cs
+++ b/osu.Game/Rulesets/Scoring/HitResult.cs
@@ -4,10 +4,12 @@
 #nullable disable
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Linq;
 using System.Runtime.Serialization;
+using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Utils;
 
 namespace osu.Game.Rulesets.Scoring
@@ -135,6 +137,8 @@ namespace osu.Game.Rulesets.Scoring
 #pragma warning disable CS0618
     public static class HitResultExtensions
     {
+        private static readonly IList<HitResult> order = EnumExtensions.GetValuesInOrder<HitResult>().ToList();
+
         /// <summary>
         /// Whether a <see cref="HitResult"/> increases the combo.
         /// </summary>
@@ -282,6 +286,16 @@ namespace osu.Game.Rulesets.Scoring
             Debug.Assert(minResult <= maxResult);
             return result > minResult && result < maxResult;
         }
+
+        /// <summary>
+        /// Ordered index of a <see cref="HitResult"/>. Used for sorting.
+        /// </summary>
+        /// <param name="result">The <see cref="HitResult"/> to get the index of.</param>
+        /// <returns>The index of <paramref name="result"/>.</returns>
+        public static int OrderingIndex(this HitResult result)
+        {
+            return order.IndexOf(result);
+        }
     }
 #pragma warning restore CS0618
 }