From af87722be8024c8c93a6cc29792af150ff18a48d Mon Sep 17 00:00:00 2001
From: Jamie Taylor <me@nekodex.net>
Date: Wed, 15 Jun 2022 12:43:21 +0900
Subject: [PATCH] Add audio feedback for 'Dangerous' dialog buttons

---
 .../Dialog/PopupDialogDangerousButton.cs      | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/osu.Game/Overlays/Dialog/PopupDialogDangerousButton.cs b/osu.Game/Overlays/Dialog/PopupDialogDangerousButton.cs
index 6239c5e409..9db2589147 100644
--- a/osu.Game/Overlays/Dialog/PopupDialogDangerousButton.cs
+++ b/osu.Game/Overlays/Dialog/PopupDialogDangerousButton.cs
@@ -2,9 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
+using osu.Framework.Utils;
+using osu.Game.Audio.Effects;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 
@@ -47,8 +51,39 @@ namespace osu.Game.Overlays.Dialog
             {
             }
 
+            private Sample tickSample;
+            private Sample confirmSample;
+            private bool isTicking;
+            private double lastTickPlaybackTime;
+            private AudioFilter lowPassFilter = null!;
+
+            [BackgroundDependencyLoader]
+            private void load(AudioManager audio)
+            {
+                lowPassFilter = new AudioFilter(audio.SampleMixer);
+                tickSample = audio.Samples.Get(@"UI/dialog-dangerous-tick");
+                confirmSample = audio.Samples.Get(@"UI/dialog-dangerous-select");
+            }
+
+            protected override void Update()
+            {
+                base.Update();
+
+                if (!isTicking) return;
+
+                if (Precision.AlmostEquals(Progress.Value, 1))
+                {
+                    confirmSample?.Play();
+                    isTicking = false;
+                }
+
+                if (Clock.CurrentTime - lastTickPlaybackTime >= 30)
+                    playTick(Progress.Value);
+            }
+
             protected override bool OnMouseDown(MouseDownEvent e)
             {
+                startTickSound();
                 BeginConfirm();
                 return true;
             }
@@ -56,7 +91,35 @@ namespace osu.Game.Overlays.Dialog
             protected override void OnMouseUp(MouseUpEvent e)
             {
                 if (!e.HasAnyButtonPressed)
+                {
+                    stopTickSound();
                     AbortConfirm();
+                }
+            }
+
+            private void playTick(double progress)
+            {
+                lowPassFilter.CutoffTo((int)(Progress.Value * AudioFilter.MAX_LOWPASS_CUTOFF * 0.5f));
+
+                tickSample.Frequency.Value = 1 + progress * 0.5f;
+                tickSample.Volume.Value = 0.5f + progress / 2f;
+                tickSample.Play();
+
+                lastTickPlaybackTime = Clock.CurrentTime;
+            }
+
+            private void startTickSound()
+            {
+                lowPassFilter.CutoffTo(0);
+                playTick(Progress.Value);
+                isTicking = true;
+            }
+
+            private void stopTickSound()
+            {
+                isTicking = false;
+                lastTickPlaybackTime = Clock.CurrentTime;
+                lowPassFilter.CutoffTo(AudioFilter.MAX_LOWPASS_CUTOFF);
             }
         }
     }