From d753eedb901c1ead239f8f288d887af292f3ce66 Mon Sep 17 00:00:00 2001
From: Aria <weglossing@gmail.com>
Date: Sat, 10 Jan 2026 11:20:17 -0600
Subject: [PATCH] Make latency consistent across all cps

---
 packages/core/repl.mjs | 3 ++-
 packages/core/time.mjs | 9 +++++++++
 packages/midi/midi.mjs | 6 ++++--
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/packages/core/repl.mjs b/packages/core/repl.mjs
index 4d59f5990..77ceac8c5 100644
--- a/packages/core/repl.mjs
+++ b/packages/core/repl.mjs
@@ -2,7 +2,7 @@ import { NeoCyclist } from './neocyclist.mjs';
 import { Cyclist } from './cyclist.mjs';
 import { evaluate as _evaluate } from './evaluate.mjs';
 import { errorLogger, logger } from './logger.mjs';
-import { setTime } from './time.mjs';
+import { setCpsFunc, setTime } from './time.mjs';
 import { evalScope } from './evaluate.mjs';
 import { register, Pattern, isPattern, silence, stack } from './pattern.mjs';
 
@@ -61,6 +61,7 @@ export function repl({
   // NeoCyclist uses a shared worker to communicate between instances, which is not supported on mobile chrome
   const scheduler =
     sync && typeof SharedWorker != 'undefined' ? new NeoCyclist(schedulerOptions) : new Cyclist(schedulerOptions);
+  setCpsFunc(() => scheduler.cps);
   let pPatterns = {};
   let anonymousIndex = 0;
   let allTransform;
diff --git a/packages/core/time.mjs b/packages/core/time.mjs
index 80daaf53c..3d94a694c 100644
--- a/packages/core/time.mjs
+++ b/packages/core/time.mjs
@@ -1,4 +1,5 @@
 let time;
+let cpsFunc;
 export function getTime() {
   if (!time) {
     throw new Error('no time set! use setTime to define a time source');
@@ -9,3 +10,11 @@ export function getTime() {
 export function setTime(func) {
   time = func;
 }
+
+export function setCpsFunc(func) {
+  cpsFunc = func;
+}
+
+export function getCps() {
+  return cpsFunc?.();
+}
diff --git a/packages/midi/midi.mjs b/packages/midi/midi.mjs
index d4f6093a0..6233bf60d 100644
--- a/packages/midi/midi.mjs
+++ b/packages/midi/midi.mjs
@@ -5,7 +5,7 @@ This program is free software: you can redistribute it and/or modify it under th
 */
 
 import * as _WebMidi from 'webmidi';
-import { Hap, Pattern, TimeSpan, getTime, isPattern, logger, ref, reify } from '@strudel/core';
+import { Hap, Pattern, TimeSpan, getCps, getTime, isPattern, logger, ref, reify } from '@strudel/core';
 import { noteToMidi, getControlName } from '@strudel/core';
 import { Note } from 'webmidi';
 import { scheduleAtTime } from '../superdough/helpers.mjs';
@@ -586,7 +586,9 @@ export async function midikeys(input) {
     const [note, velocity] = dataBytes;
     const noteoff = message.command === 8;
     const key = `${input}_${note}`;
-    const t = getTime() + 0.03; // slight delay so it's not too late for cyclist to catch
+    const cps = getCps() ?? 0.5;
+    const latencySeconds = 0.06; // slight delay so it's not too late for cyclist to catch
+    const t = getTime() + latencySeconds * cps;
     const span = new TimeSpan(t, t);
     let value = { midikey: key };
     if (noteoff) {