91 lines
2.8 KiB
JavaScript
91 lines
2.8 KiB
JavaScript
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module.exports = {
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roll: function (req) {
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if (typeof req !== "string") {
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return "<@138725786067664897>! You don goofed!";
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}
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// Splits request into segments. Example "3d6+3+5d2" => ["3d6", "+3", "+5d2"]
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var segments = req.replace(/\s/g, '').match(/([+\-]?\d{0,}d\d{1,})|([+\-*/x]\d{1,})/gi);
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var message = '';
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var i = -1;
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var results = [];
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var curResult = 0;
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var curMod = 1;
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segments.forEach(e => {
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if (e.match(/([+\-]?\d{0,}d\d{1,})/gi)) { // xdy
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// if not first add previous result and resetting curResult
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if (i >= 0) {
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curResult *= curMod;
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results[i] = curResult;
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curResult = 0;
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}
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i++;
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// Set modifier for dice group
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curMod = (e.substring(0, 1) === '-') ? -1 : 1;
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// dice[0] = number of rolls, dice[1] = sides of dice rolled
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var dice = e.replace(/[+\-]?/, '').split(/d/i);
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var rolls = [];
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for (var l = 0; l < parseInt(dice[0] === '' ? 1 : dice[0]); l++) {
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rolls[l] = rollDice(dice[1]);
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curResult += rolls[l];
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}
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// add result to message
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var sign = e.match(/[+\-]/);
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message += ((sign === null) ? ' ' : ' ' + sign) + '[' + rolls.toString() + ']';
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} else if (e.match(/([+\-*/x]\d{1,})/gi)) { // Modifier
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switch (e.substring(0, 1)) {
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case '+':
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curResult += parseInt(e.substring(1));
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break;
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case '-':
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curResult -= parseInt(e.substring(1));
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break;
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case '*':
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case 'x':
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curResult *= parseInt(e.substring(1));
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break;
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case '/':
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curResult /= parseInt(e.substring(1));
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break;
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}
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message += e;
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}
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})
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curResult *= curMod;
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results[i] = curResult;
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// Adding the sum to the message
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var sum = 0;
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if (results.length > 1){
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sum = results.reduce(getSum);
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} else if (results.length === 1){
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sum = results[0];
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}
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message += ' = ' + sum;
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if (message.length > 2000)
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message = "Response was to long. Sum: " + sum;
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return message;
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}
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}
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/**
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* Roll one dice, returns result
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* @param {int} dice Amount of sides od dice rolled
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*/
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function rollDice(dice) {
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return parseInt((Math.random() * dice) + 1)
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}
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function getSum(total, num) {
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return total + num
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} |