GC - Lottomatic

Generate lotto numbers with minimal overlap

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         GC  - Lottomatic
// @version      0.1.1
// @description  Generate lotto numbers with minimal overlap
// @author       wibreth
// @namespace    neopets
// @match        https://www.grundos.cafe/games/lottery/*
// @grant        GM_setValue
// @grant        GM_getValue
// ==/UserScript==

// based on https://www.andrew.cmu.edu/user/kmliu/neopets/lottery.html with permission

(function() {
    'use strict';
    /* globals $:false */

    var numbers = GM_getValue("numbers", "");

    function shuffle(o)
    {
        for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
        return o;
    };

    function leaf(a,b)
    {
        var res = new Array();
        for(var i=0; i<a.length; i++)
        {
            res[i*2] = a[i];
            res[i*2+1] = b[i];
        }
        return res;
    };

    function generate() {
        var arr = new Array();
        for(var i=0; i<30; i++)
            arr[i] = i+1;

        var arr1 = shuffle(arr);
        var arr2 = leaf( arr1.slice(0,15), arr1.slice(15,30) )
        var arr3 = leaf( arr2.slice(0,15), arr2.slice(15,30) )
        var arr4 = leaf( arr3.slice(0,15), arr3.slice(15,30) )
        var marr = arr1.concat(arr2,arr3,arr4);

        numbers = new Array();
        for(i=0; i<20; i++)
            numbers[i] = [marr[6*i], marr[6*i+1], marr[6*i+2], marr[6*i+3], marr[6*i+4], marr[6*i+5]];
        GM_setValue('numbers', numbers);
        populate();
    };

    function refresh() {
        $('.tickets').remove();
        numbers = [];
        generate();
    };

    function populate() {
        var radiodiv = $('<div class="tickets" style="font-size: 0.8em">');
        numbers.forEach((ticket, idx) => {
            radiodiv.append(`<div><input type="radio" id="${idx+1}" name="ticket" value="${idx}">
            <label for="${idx+1}">${idx+1}: ${ticket.join(', ')}</label></div>`);
        });
        $('#lotto-sprite-container').append(radiodiv);
        $('.tickets input').change(function() {
            var ticket = numbers[$(this).val()];
            $('input[name="one"]').val(ticket[0]);
            $('input[name="two"]').val(ticket[1]);
            $('input[name="three"]').val(ticket[2]);
            $('input[name="four"]').val(ticket[3]);
            $('input[name="five"]').val(ticket[4]);
            $('input[name="six"]').val(ticket[5]);
        });
        $('label').click(function() {
            let id = $(this).prop("for");
            $("#" + id).click();
        });
    }

    $('document').ready( function() {
        $('.center form:last-child() .half-width').addClass('flex-column');
        var refreshbtn = $('<a>⭮</a>')
        refreshbtn.click(function() {
            refresh();
        });
        $('#lotto-sprite-container').append(refreshbtn);

        if (!numbers)
            generate();
        else
            populate();
    });
})();