mirror of
https://codeberg.org/uzu/strudel
synced 2026-09-05 06:57:35 -04:00
Felix Roos
69 lines
2.3 KiB
JavaScript
69 lines
2.3 KiB
JavaScript
import { evaluate, evalScope } from '@strudel.cycles/eval';
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import { Scheduler, getAudioContext } from '@strudel.cycles/webaudio';
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import { loadWebDirt } from '@strudel.cycles/webdirt';
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import controls from '@strudel.cycles/core/controls.mjs';
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// import desired modules and add them to the eval scope
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await evalScope(
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import('@strudel.cycles/core'),
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import('@strudel.cycles/mini'),
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import('@strudel.cycles/osc'),
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import('@strudel.cycles/webdirt'),
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controls,
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// import other strudel packages here
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); // add strudel to eval scope
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const audioContext = getAudioContext();
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const latency = 0.2;
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// load default samples + init webdirt
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loadWebDirt({
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audioContext,
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latency,
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sampleMapUrl: 'https://strudel.tidalcycles.org/EmuSP12.json',
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sampleFolder: 'https://strudel.tidalcycles.org/EmuSP12/',
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});
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// the scheduler will query the pattern within the given interval
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const scheduler = new Scheduler({
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audioContext,
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interval: 0.1,
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latency,
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onEvent: (hap) => {
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/* const delta = hap.whole.begin - audioContext.currentTime;
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console.log('delta', delta); */
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// when using .osc or .webdirt, each hap will have context.onTrigger set
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// if no onTrigger is set, try to play hap.value as frequency with a cheap oscillator
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if (!hap.context.onTrigger) {
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// console.log('e', e.show());
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const oscillator = audioContext.createOscillator();
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const master = audioContext.createGain();
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master.gain.value = 0.1;
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master.connect(audioContext.destination);
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oscillator.type = 'sawtooth';
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oscillator.frequency.value = hap.value;
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oscillator.connect(master);
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oscillator.start(hap.whole.begin);
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oscillator.stop(hap.whole.end);
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}
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},
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});
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// eval + start on button click
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document.getElementById('start').addEventListener('click', async () => {
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const { pattern } = await evaluate(
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// 's("bd sd").osc()', // need to run sclang + osc server (npm run osc in strudel root)
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`stack(
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freq("55 [110,165] 110 [220,275]".mul("<1 <3/4 2/3>>").struct("x(3,8)")
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.layer(x=>x.mul("1.006,.995"))), // detune
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freq("440(5,8)".legato(.18).mul("<1 3/4 2 2/3>")).gain(perlin.range(.2,.8))
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).s("<sawtooth square>/2")
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.cutoff(perlin.range(100,4000).slow(4))
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.jux(rev)
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.out()
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.stack(s("bd(3,8),hh*4,~ sd").webdirt())`,
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);
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scheduler.setPattern(pattern);
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scheduler.start();
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});
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