From c3f22a5afb716a723de6b534b143704c7304fff4 Mon Sep 17 00:00:00 2001
From: Rezmason <jeremysachs@rezmason.net>
Date: Tue, 7 Jun 2022 20:20:13 -0700
Subject: [PATCH] Reducing the number of fade variants when the effect is
 running quicker, to gain some more CPU.

---
 playdate/matrix_c/main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/playdate/matrix_c/main.c b/playdate/matrix_c/main.c
index 5498936..faa23d1 100644
--- a/playdate/matrix_c/main.c
+++ b/playdate/matrix_c/main.c
@@ -128,12 +128,15 @@ static void init(void)
 static int update(void* ud)
 {
 	float delta;
+	int currentFadeSkip = 1;
+
 	if (sys->isCrankDocked()) {
 		speed += 0.07f;
 		if (speed > maxSpeed) {
 			speed = maxSpeed;
 		}
 		delta = sys->getElapsedTime() * speed;
+		currentFadeSkip = 6;
 	} else {
 		speed -= 0.07f;
 		if (speed < minSpeed) {
@@ -144,6 +147,8 @@ static int update(void* ud)
 	sys->resetElapsedTime();
 	time += delta;
 
+	int currentNumFades = numFades / currentFadeSkip;
+
 	PDButtons currentButtons;
 	sys->getButtonState(&currentButtons, NULL, NULL);
 	int addPDGlyphs = currentButtons & kButtonA && currentButtons & kButtonB;
@@ -160,7 +165,8 @@ static int update(void* ud)
 			1
 		);
 
-		int fadeIndex = brightness * numFades;
+		int fadeIndex = brightness * currentNumFades;
+		fadeIndex *= currentFadeSkip;
 		if (fadeIndex < 0) fadeIndex = 0;
 		if (fadeIndex >= numFades - 1) fadeIndex = numFades - 1;
 		if (cell->fadeIndex != fadeIndex) {