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Zoom Audio Responsive

'use strict';//Script made by TheJacksonGamer ( https://steamcommunity.com/id/TheJacksonGamer ), for help thanks to Gariam ( https://steamcommunity.com/id/capitan-willy-1 ), who helped write script to disable the feature for users.

import * as WEMath from 'WEMath';

export var scriptProperties = createScriptProperties()
.addCheckbox({
name: 'zoom',
label: 'Zoom Audio Responsive',
value: false
})
.addSlider({
name: 'frequency',
label: 'Frequency',
value: 0,
min: 0,
max: 16, // Must be 16, 32 or 64.
integer: true
})
.addSlider({
name: 'amount',
label: 'Amount',
value: 0.1,
min: -1,
max: 1,
integer: false
})
.addSlider({
name: 'threshold',
label: 'Threshold',
value: 0.1,
min: 0,
max: 1,
integer: false
})
.addSlider({
name: 'smoothingRate',
label: 'Smoothing rate',
value: 1.5, // Must be greater or equal to 1.
min: 1,
max: 5,
integer: false
})
.finish();

let frequencyResolution = 16; // Must be 16, 32 or 64 per channel.
let audioBuffer = engine.registerAudioBuffers(frequencyResolution);
let audioDelta, initValue;

export function update(value) {
if (!scriptProperties.zoom) audioDelta = 0; //Add (without []) [ || !engine.userProperties.key] after [if (!scriptProperties.zoom], to be able to disable function by subscribers yours wallpaper. Where [key] is user key from an empty user property.
else audioDelta = Math.max(0, audioBuffer.average[scriptProperties.frequency] - scriptProperties.threshold);

audioDelta = smoothStep(initValue, scriptProperties.amount, audioDelta);
return WEMath.mix(value, audioDelta, (1 + engine.frametime) / (scriptProperties.smoothingRate - engine.frametime));
}

export function init(value) {
initValue = value;
}

// Specifically made for this.
function smoothStep(a, b, x){
return x * x * (3.0 - x + x) * b * 0.1 + a;
}