poker.js: 数値添字配列をトランプの手札に見立てて役を求める。4種のマークが存在しないので不完全。とりあえず、作ったので公開してみたレベル。

readme.md

poker.js

概要

数値添字配列をトランプの手札に見立てて役を求めます。4種のマークが存在しないのでポーカーライブラリとしては不完全です。

使い方

準備中。

poker.js

/**
 * poker.js
 *
 * @version 0.1.1
 * @author think49
 * @url https://gist.github.com/think49/39c020a54939513cb2fd
 * @license http://www.opensource.org/licenses/mit-license.php (The MIT License)
 */

'use strict';
var Poker = (function () {

  function Poker (hand) {
    this.hand = hand.sort();
    this.groupingHand = this.getGroupingHand();
    this.handRank = this.getHandRank();
  }

  (function (descending) {
    this.getGroupingHand = function getGroupingHand (/*hand*/) {
      var groupingHand = [], hand, card, handIndex, i, group = [];

      hand = (arguments.length > 0 ? arguments[0] : this.hand).slice().sort(descending);
      i = hand.length;

      while (i--) {
        card = hand[i];
        group = [card];
        hand.pop();
        handIndex = hand.indexOf(card);
  
        if (handIndex !== -1) {
          handIndex = hand.indexOf(card)
  
          do {
            hand = hand.slice(0, handIndex).concat(hand.slice(handIndex + 1));
            group.push(hand);
            handIndex = hand.indexOf(card);
            i--;
          } while (handIndex !== -1);
        }
  
        groupingHand.push(group);
      }
  
      return groupingHand;
    };
    
    this.getHandRank = function getHandRank (/*groupingHand*/) {
      var groupingHand, counts = [], handRank = 'No Pair';

      groupingHand = arguments.length > 0 ? arguments[0] : this.groupingHand;

      for (var i = 0, l = groupingHand.length; i < l; ++i) {
        counts.push(groupingHand[i].length);
      }

      counts.sort(descending);

      if (counts[0] === 4) {
        handRank = 'Four of a Kind';
      } else if (counts[0] === 3 && counts[1] === 2) {
        handRank = 'Full House';
      } else if (counts[0] === 3) {
        handRank = 'Three of a kind';
      } else if (counts[0] === 2) {
        handRank = counts[1] === 2 ? 'Two pair' : 'One pair';
      }

      return handRank;
    };

  }).call(Poker.prototype, function descending (a, b) { return a < b; });

  return Poker;
})();