Bust Statistics

bust-stats.js

var config = {};
var debug = false;
let history = engine.getState().history;
let busts = [];
let padding = Array(6).join(' ');

engine.on('GAME_ENDED', onGameEnded);

for (let i = 0; i < history.length; i++) {
    busts.push(history[i].bust);
}

function onGameEnded() {
    busts.push(engine.history.first().bust)
    outputStats();
}

function outputStats() {
    if (debug) { log("[" + JSON.stringify(busts) + "]["+busts.length+"]"); }
    log("High : " + pad(padding, busts.max())
    +" | Low : " + pad(padding, busts.min())
    +" | Mean : " + pad(padding, busts.mean())
    +" | Median : " + pad(padding, busts.median())
    +" | Mode : " + pad(padding, busts.mode()) + "");
}

function pad(pad, str, padLeft) {
    if (typeof str === 'undefined') return pad;
    if (padLeft) {
        return (pad + str).slice(-pad.length);
    } else {
        return (str + pad).substring(0, pad.length);
    }
}

Array.prototype.min = function () {
    return Math.min.apply(null, this);
}
Array.prototype.max = function () {
    return Math.max.apply(null, this);
}
Array.prototype.mean = function () {
    if (this.length >= 1) {
        let sum = 0;
        for (let i = 0; i < this.length; i++) {
            sum += this[i];
        }
        return (sum / this.length);
    }
    return -1;
}
var numberSort = function (a, b) {
    return a - b;
};
Array.prototype.median = function () {
    if (this.length >= 1) {
        let median = this.slice().sort(numberSort);
        if ((median.length % 2) == 0) {
            return (((median[median.length / 2] + median[(median.length / 2) - 1])) / 2);
        } else {
            return (median[Math.floor(median.length / 2)])
        }
    }
    return -1;
}
Array.prototype.mode = function () {
    let modeMap = {};
    let maxEl = this[0], maxCount = 1;
    for (let i = 0; i < this.length; i++) {
        let el = this[i];
        if (modeMap[el] == null) {
            modeMap[el] = 1;
        } else {
            modeMap[el]++;
        }
        if (modeMap[el] > maxCount) {
            maxEl = el;
            maxCount = modeMap[el];
        }
    }
    if (maxCount == 1) {
        return -1;
    }
    return maxEl;
}

outputStats();