117 lines
2.2 KiB
JavaScript
117 lines
2.2 KiB
JavaScript
/**
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* Emit a custom event
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* @param {String} type The event type
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* @param {*} detail Any details to pass along with the event
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*/
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function emit (type, detail) {
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// Create a new event
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let event = new CustomEvent(type, {
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bubbles: true,
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cancelable: true,
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detail: detail
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});
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// Dispatch the event
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return document.dispatchEvent(event);
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}
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class TreasureChest {
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#gold;
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#silver;
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#bronze;
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constructor (initialLoot = {}) {
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// Merge options into defaults
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let {bronze, silver, gold} = Object.assign({
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bronze: 0,
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silver: 0,
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gold: 0,
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}, initialLoot);
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this.#bronze = bronze;
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this.#silver = silver;
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this.#gold = gold;
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}
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addGold (qty) {
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this.#gold += qty;
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emit('treasurechest:add', {type: 'gold', qty: qty});
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return this;
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}
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addSilver (qty) {
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this.#silver += qty;
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emit('treasurechest:add', {type: 'silver', qty: qty});
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return this;
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}
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addBronze (qty) {
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this.#bronze += qty;
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emit('treasurechest:add', {type: 'bronze', qty: qty});
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return this;
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}
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getBronze () {
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return this.#bronze;
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}
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getSilver () {
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return this.#silver;
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}
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getGold () {
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return this.#gold;
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}
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getLoot () {
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return `Gold: ${this.#gold}, Silver: ${this.#silver}, Bronze: ${this.#bronze}`;
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}
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/**
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* Randomly shuffle an array
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* https://stackoverflow.com/a/2450976/1293256
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* @param {Array} array The array to shuffle
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* @return {Array} The shuffled array
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*/
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static #shuffle (array) {
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let currentIndex = array.length;
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let temporaryValue, randomIndex;
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// While there remain elements to shuffle...
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while (0 !== currentIndex) {
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// Pick a remaining element...
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randomIndex = Math.floor(Math.random() * currentIndex);
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currentIndex -= 1;
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// And swap it with the current element.
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temporaryValue = array[currentIndex];
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array[currentIndex] = array[randomIndex];
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array[randomIndex] = temporaryValue;
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}
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return array;
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}
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static getRandomLoot () {
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let amount = [];
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for (let qty = 0; qty < 50; qty++) {
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amount.push(qty+1);
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}
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return {
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gold: this.#shuffle(amount)[0],
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silver: this.#shuffle(amount)[0],
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bronze: this.#shuffle(amount)[0],
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}
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}
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};
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