From 003e4247f9064e86f2c6bc1aa2eb7baeda7f49ee Mon Sep 17 00:00:00 2001
From: Joppe27 <joppe27@hotmail.com>
Date: Tue, 18 Oct 2022 23:55:40 +0200
Subject: [PATCH] Implement kiai flashing for "triangles" taiko skin

---
 .../Skinning/Default/CirclePiece.cs                    | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
index a7ab1bcd4a..d0eaf9a602 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System;
 using osu.Framework.Audio.Track;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -32,6 +33,8 @@ namespace osu.Game.Rulesets.Taiko.Skinning.Default
 
         private const double pre_beat_transition_time = 80;
 
+        private const float flash_opacity = 0.3f;
+
         private Color4 accentColour;
 
         /// <summary>
@@ -157,6 +160,13 @@ namespace osu.Game.Rulesets.Taiko.Skinning.Default
             if (!effectPoint.KiaiMode)
                 return;
 
+            FlashBox
+                // Make sure the hit indicator usage of FlashBox doesn't get faded out prematurely by a kiai flash
+                .DelayUntilTransformsFinished()
+                .FadeTo(flash_opacity, 0, Easing.OutQuint)
+                .Then()
+                .FadeOut(Math.Max(80, timingPoint.BeatLength - 80), Easing.OutSine);
+
             if (beatIndex % timingPoint.TimeSignature.Numerator != 0)
                 return;