node-red-contrib-dualshock/src/utilities.js

Node-RED node for PlayStation Dualshock 4 gamepad

'use strict';
// Module dependencies.

var config = require('./config');

var unique = function unique(x) {
    var result = [];
    for (var i = 0; i < x.length; i++) {
        if ((result.indexOf(x[i]) < 0)) {
            result.push(x[i]);
        }
    }
    return result;
};

//provide a few utility functions.
module.exports = {

    //reduces noise from the controller
    isWithinVariance: function(x, y, varianceThreshhold) {
        return Math.abs(x - y) > varianceThreshhold;
    },
    warn: function(message) {
        if (config.getOptions().logging) {
            console.log(message);
        }
    },
    generateEventPrefixAliases: function(eventPrefix) {
        return unique([
            eventPrefix,
            eventPrefix.toLowerCase()
        ]);
    }
};