From 4b728c2125d1e6994579fa3c8184af8f93f84f1e Mon Sep 17 00:00:00 2001
From: Louis Dalibard <ontake@ontake.dev>
Date: Fri, 17 Jan 2025 15:01:51 +0100
Subject: [PATCH] yes

---
 config/config.go | 2 ++
 main.go          | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/config/config.go b/config/config.go
index 0839506..09274b8 100644
--- a/config/config.go
+++ b/config/config.go
@@ -42,6 +42,7 @@ type ConfigS struct {
 	PeriodCrop                       bool
 	PeriodCropCount                  int
 	PeriodCropLoopOverCount          uint32
+	FFTBufferOffset                  uint32
 }
 
 var DefaultConfig = ConfigS{
@@ -73,6 +74,7 @@ var DefaultConfig = ConfigS{
 	PeriodCrop:                       true,
 	PeriodCropCount:                  2,
 	PeriodCropLoopOverCount:          1,
+	FFTBufferOffset:                  3200,
 }
 
 var Config ConfigS
diff --git a/main.go b/main.go
index 8d84b3d..4fd6f69 100644
--- a/main.go
+++ b/main.go
@@ -94,7 +94,7 @@ func (g *Game) Draw(screen *ebiten.Image) {
 		}
 	} else {
 		for i := uint32(0); i < numSamples; i++ {
-			FFTBuffer[i] = float64(AX)
+			FFTBuffer[(i+config.Config.FFTBufferOffset)%numSamples] = float64(AX)
 			binary.Read(audio.SampleRingBuffer, binary.NativeEndian, &AX)
 			binary.Read(audio.SampleRingBuffer, binary.NativeEndian, &AY)
 		}