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path: root/client/lib/kalimba.js
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import Tone from 'tone'
import { choice } from './util'

const player_count = 2
let sample_index = 0

const compressor = new Tone.Compressor(-30, 3).toMaster()

const samples = [
  { root: 226, fn: 'samples/380737__cabled-mess__sansula-01-a-raw.mp3', },
  { root: 267, fn: 'samples/380736__cabled-mess__sansula-02-c-raw.mp3', },
  { root: 340, fn: 'samples/380735__cabled-mess__sansula-03-e-raw.mp3', },
  { root: 452, fn: 'samples/380733__cabled-mess__sansula-06-a-02-raw.mp3', },
//  { root: 507, fn: 'samples/380734__cabled-mess__sansula-07-b-h-raw.mp3', },
//  { root: 535, fn: 'samples/380731__cabled-mess__sansula-08-c-raw.mp3', },
//  { root: 671, fn: 'samples/380732__cabled-mess__sansula-09-e-raw.mp3', },
]

samples.forEach((sample) => {
  sample.players = []
  sample.index = -1
  for (let i = 0; i < player_count; i++) {
    let fn = sample.fn
    if (window.location.href.match(/asdf.us/)) {
      fn = '//asdf.us/kalimba/' + fn
    }
    let player = new Tone.Player({
      url: fn,
      retrigger: true,
      playbackRate: 1,
    })
    player.connect(compressor)
    sample.players.push(player)
  }
})

function play (freq, volume = 0.0) {
  const best = { sample: samples[sample_index] }
  sample_index = (sample_index + 1) % samples.length
  best.sample.index = (best.sample.index + 1) % player_count

  const player = best.sample.players[ best.sample.index ]
  player.playbackRate = freq / best.sample.root
  // console.log(player)
  player.volume.value = volume
  setTimeout(() => { player.start() }, 0)
}

export default { play }