Optimized note math

source/funkin/backend/utils/CoolUtil.hx

@@ -581,6 +581,10 @@ class CoolUtil
 		return r;
 	}
 
+	public static inline function quantize(Value:Float, Quant:Float) {
+		return Math.fround(Value * Quant) / Quant;
+	}
+
 	/**
 	 * Sets a SoundFrontEnd's music to a FlxSound.
 	 * Example: `FlxG.sound.setMusic(music);`

source/funkin/game/Note.hx

@@ -83,6 +83,14 @@ class Note extends FlxSprite
 	@:dox(hide) public var __strumCameras:Array<FlxCamera> = null;
 	@:dox(hide) public var __strum:Strum = null;
 	@:dox(hide) public var __noteAngle:Float = 0;
+	@:dox(hide) public var __scrollSpeed(default, set):Float = 0;
+	@:dox(hide) public var __length:Float = 0;
+
+	@:dox(hide) private inline function set___scrollSpeed(v:Float) {
+		if(__scrollSpeed != v)
+			__length = 0.45 * CoolUtil.quantize(v, 100);
+		return __scrollSpeed = v;
+	}
 
 	private function get_noteType() {
 		if (PlayState.instance == null) return null;
@@ -251,13 +259,11 @@ class Note extends FlxSprite
 	public var latePressWindow:Float = 1;
 
 	public function updateSustain(strum:Strum) {
-		var scrollSpeed = strum.getScrollSpeed(this);
-
-		if (nextSustain != null && lastScrollSpeed != scrollSpeed) {
+		if (nextSustain != null && lastScrollSpeed != __scrollSpeed) {
 			// is long sustain
-			lastScrollSpeed = scrollSpeed;
+			lastScrollSpeed = __scrollSpeed;
 
-			scale.y = (sustainLength * (0.45 * FlxMath.roundDecimal(scrollSpeed, 2))) / frameHeight;
+			scale.y = (sustainLength * __length) / frameHeight;
 			updateHitbox();
 			if (useAntialiasingFix) {
 				// dumbass antialiasing
@@ -266,7 +272,7 @@ class Note extends FlxSprite
 		}
 
 		if (!wasGoodHit) return;
-		var t = FlxMath.bound((Conductor.songPosition - strumTime) / (height / (0.45 * FlxMath.roundDecimal(scrollSpeed, 2))), 0, 1);
+		var t = FlxMath.bound((Conductor.songPosition - strumTime) / (height) * __length, 0, 1);
 		var swagRect = this.clipRect == null ? new FlxRect() : this.clipRect;
 		swagRect.x = 0;
 		swagRect.y = t * frameHeight;

source/funkin/game/PlayState.hx

@@ -1095,7 +1095,7 @@ class PlayState extends MusicBeatState
 
 		@:privateAccess {
 			accFormat.format.color = curRating.color;
-			accuracyTxt.text = 'Accuracy:${accuracy < 0 ? "-%" : '${FlxMath.roundDecimal(accuracy * 100, 2)}%'} - ${curRating.rating}';
+			accuracyTxt.text = 'Accuracy:${accuracy < 0 ? "-%" : '${CoolUtil.quantize(accuracy * 100, 100)}%'} - ${curRating.rating}';
 
 			accuracyTxt._formatRanges[0].range.start = accuracyTxt.text.length - curRating.rating.length;
 			accuracyTxt._formatRanges[0].range.end = accuracyTxt.text.length;

source/funkin/game/Strum.hx

@@ -88,6 +88,7 @@ class Strum extends FlxSprite {
 		daNote.__strum = this;
 		daNote.scrollFactor.set(scrollFactor.x, scrollFactor.y);
 		daNote.__noteAngle = getNotesAngle(daNote);
+		daNote.__scrollSpeed = getScrollSpeed(daNote);
 		daNote.angle = daNote.isSustainNote ? daNote.__noteAngle : angle;
 
 		updateNotePos(daNote);
@@ -95,10 +96,10 @@ class Strum extends FlxSprite {
 
 	private inline function updateNotePos(daNote:Note) {
 		if (daNote.strumRelativePos) {
-			daNote.setPosition((this.width - daNote.width) / 2, (daNote.strumTime - Conductor.songPosition) * (0.45 * FlxMath.roundDecimal(getScrollSpeed(daNote), 2)));
+			daNote.setPosition((this.width - daNote.width) / 2, (daNote.strumTime - Conductor.songPosition) * daNote.__length);
 			if (daNote.isSustainNote) daNote.y += N_WIDTHDIV2;
 		} else {
-			var offset = FlxPoint.get(0, (Conductor.songPosition - daNote.strumTime) * (0.45 * FlxMath.roundDecimal(getScrollSpeed(daNote), 2)));
+			var offset = FlxPoint.get(0, (Conductor.songPosition - daNote.strumTime) * daNote.__length);
 			var realOffset = FlxPoint.get(0, 0);
 
 			if (daNote.isSustainNote) offset.y -= N_WIDTHDIV2;