kegel/kegel.js

const WebSocket = require('ws')
const osc = require('osc')

const ip = process.argv[2]

const DEBUG = {
  midi: true,
  osc: false
}

//const ws = new WebSocket(`ws://${ip}:6676`)

/*
const wsp = new osc.WebsocketClientPlugin({
  host: ip,
  port: 6676
})
*/
const oscWS = new osc.WebSocketPort({
  url: `ws://${ip}:6676`,
  metadata: false
})

oscWS.on('ready', () => {
  console.log(`Povezan sem na ${ip}`)

  /*
  setInterval(() => {
    console.log('ping')
    oscWS.send({ address: '/ping', args: [true]})
  }, 500)
  */
})

const zaznava = 0.8

let cakaj = false

const cakajInterval = 1 / 5
const razponTona = [0.1, 0.5]
//const razponTona = [0.001, 0.002]

let rotVisina = 0

oscWS.on('message', ({ address, args }) => {
  DEBUG.osc && console.log('MSG OSC', address, args.map(x => x.toFixed(4)))

  //const re = /\/ww\/(d+)\/([a-zA-Z]+)/
  const re = /\/ww\/(\d+)\/([a-zA-Z]+)/
  const m = address.match(re)

  const index = m[1]
  const addr = m[2]

  if (addr == 'euler') {
    //const eVisina = Math.sin(args[0] + args[1])
    const eVisina = Math.sin(args[2])
    rotVisina = 24 + Math.round(((eVisina / 2) + 0.5) * 24)
    //console.log("rotVisina", rotVisina)
  }

  if (addr == 'accel') {
    const acX = args[0]
    const acY = args[1]
    const acZ = args[2]

    // Y os je kegel po dolgem - ignoriramo
    const vsota = acX + acZ

    if (vsota > zaznava && !cakaj) {

      cakaj = true

      // Pavza
      setTimeout(() => {
        //console.log("nehaj cakat")
        cakaj = false
      }, cakajInterval * 1000)

      const midiKanal = 144 + parseInt(index)

      // Od 24 do 48
      const accval = Math.sin((vsota - zaznava) / 3)
      //console.log(acX, accval)
      // Acc visina
      const visina = (midiKanal == 0)
            ? 24 + Math.round((accval / 2.5) * 36)
            : 48 + Math.round((accval / 2.5) * 72)
            
      //const visina = rotVisina

      //console.log('posiljam midi', [144, visina, 127])
      /*
      oscWS.send({
        address: '/midi',
        args: [192, 0, 127]
      })
      */
      oscWS.send({
        address: '/midi',
        args: [midiKanal, visina, 127]
      })
      console.log('vklopi', midiKanal, visina)

      // Ugasni cez en cas
      let izklop = razponTona[0] + Math.random() * (razponTona[1] - razponTona[0])
      setTimeout(() => {
        oscWS.send({
          address: '/midi',
          args: [midiKanal, visina, 0]
        })
        console.log('izklopi', midiKanal, visina)
      }, izklop * 1000) 
    }
  }
})
 

oscWS.open()