mirror of https://github.com/nealey/vail.git
62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
var ac = new AudioContext()
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var gain = ac.createGain()
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gain.connect(ac.destination)
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gain.gain.value = 0.1
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var longest = 500
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var audioFreq = 660
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var audioFreqMe = audioFreq * 6 / 5 // I think this works out to a minor third
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var myosc
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function message(event) {
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let duration = Number(event.data) || 0
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duration = Math.min(duration, longest)
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let osc = ac.createOscillator()
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osc.connect(gain)
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osc.frequency.value = audioFreq
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osc.start(ac.currentTime)
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osc.stop(ac.currentTime + (duration * 0.001))
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}
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function key(event) {
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if (event.type.endsWith("down")) {
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if (! event.repeat) {
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window.down = event.timeStamp
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}
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if (! myosc) {
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myosc = ac.createOscillator()
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myosc.connect(gain)
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myosc.frequency.value = audioFreqMe
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myosc.start(ac.currentTime)
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}
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} else {
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let duration = event.timeStamp - window.down
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duration = Math.min(duration, longest)
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console.log(event.timeStamp, window.down, duration)
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window.socket.send(duration)
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if (myosc) {
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myosc.stop(ac.currentTime)
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myosc = null
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}
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}
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}
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function init() {
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window.socket = new WebSocket("ws://penguin.linux.test:8080/chat")
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window.socket.addEventListener("message", message)
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document.addEventListener("mousedown", e => key(e))
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document.addEventListener("mouseup", e => key(e))
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document.addEventListener("keydown", e => key(e))
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document.addEventListener("keyup", e => key(e))
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}
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if (document.readyState === "loading") {
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document.addEventListener("DOMContentLoaded", init)
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} else {
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init()
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}
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