From 4a316fad2fedf334db9761764a46d59fb9e18e3a Mon Sep 17 00:00:00 2001
From: Jamie Taylor <me@nekodex.net>
Date: Thu, 23 Jun 2022 17:18:37 +0900
Subject: [PATCH] Add audio feedback for rearranging list items

---
 .../OsuRearrangeableListContainer.cs          | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/osu.Game/Graphics/Containers/OsuRearrangeableListContainer.cs b/osu.Game/Graphics/Containers/OsuRearrangeableListContainer.cs
index 84d0d1eb32..a314992287 100644
--- a/osu.Game/Graphics/Containers/OsuRearrangeableListContainer.cs
+++ b/osu.Game/Graphics/Containers/OsuRearrangeableListContainer.cs
@@ -3,9 +3,14 @@
 
 #nullable disable
 
+using System.Collections.Specialized;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Utils;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -18,11 +23,44 @@ namespace osu.Game.Graphics.Containers
 
         protected override ScrollContainer<Drawable> CreateScrollContainer() => new OsuScrollContainer();
 
+        private Sample sampleSwap;
+        private double sampleLastPlaybackTime;
+
         protected sealed override RearrangeableListItem<TModel> CreateDrawable(TModel item) => CreateOsuDrawable(item).With(d =>
         {
             d.DragActive.BindTo(DragActive);
         });
 
         protected abstract OsuRearrangeableListItem<TModel> CreateOsuDrawable(TModel item);
+
+        protected OsuRearrangeableListContainer()
+        {
+            Items.CollectionChanged += (_, args) =>
+            {
+                if (args.Action == NotifyCollectionChangedAction.Move)
+                    playSwapSample();
+            };
+        }
+
+        private void playSwapSample()
+        {
+            if (Time.Current - sampleLastPlaybackTime <= 35)
+                return;
+
+            var channel = sampleSwap?.GetChannel();
+            if (channel == null)
+                return;
+
+            channel.Frequency.Value = 0.96 + RNG.NextDouble(0.08);
+            channel.Play();
+            sampleLastPlaybackTime = Time.Current;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            sampleSwap = audio.Samples.Get(@"UI/item-swap");
+            sampleLastPlaybackTime = Time.Current;
+        }
     }
 }