react-memory-game/dist/index.js

A memory game engine.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.MemoryGame = undefined;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _lodash = require('lodash');

require('regenerator-runtime/runtime');

var _MemoryGrid = require('./MemoryGrid');

var _MemoryGrid2 = _interopRequireDefault(_MemoryGrid);

var _MemoryCard = require('./MemoryCard');

var _MemoryCard2 = _interopRequireDefault(_MemoryCard);

var _Counter = require('./Counter');

var _Counter2 = _interopRequireDefault(_Counter);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var MEMORY_GAME_CONTEXT = '__memory_game_context__';
var BOARD_SIZE = 16;

var ResetButton = function ResetButton(_ref, context) {
  var _ref$children = _ref.children,
      children = _ref$children === undefined ? 'Reset Game' : _ref$children;
  var resetGame = context[MEMORY_GAME_CONTEXT].resetGame;

  return _react2.default.createElement(
    'button',
    { className: 'memory-game--reset', onClick: resetGame },
    children
  );
};
ResetButton.contextTypes = _defineProperty({}, MEMORY_GAME_CONTEXT, _propTypes2.default.object.isRequired);

var Board = function Board(props, context) {
  var cards = context[MEMORY_GAME_CONTEXT].cards;

  return _react2.default.createElement(
    _MemoryGrid2.default,
    null,
    cards
  );
};
Board.contextTypes = _defineProperty({}, MEMORY_GAME_CONTEXT, _propTypes2.default.object.isRequired);

var MovesCounter = function MovesCounter(props, context) {
  var movesCounter = context[MEMORY_GAME_CONTEXT].movesCounter;

  return _react2.default.createElement(_Counter2.default, { counter: movesCounter });
};
MovesCounter.contextTypes = _defineProperty({}, MEMORY_GAME_CONTEXT, _propTypes2.default.object.isRequired);

var PairsFoundCounter = function PairsFoundCounter(props, context) {
  var pairsFoundCounter = context[MEMORY_GAME_CONTEXT].pairsFoundCounter;

  return _react2.default.createElement(_Counter2.default, { counter: pairsFoundCounter });
};
PairsFoundCounter.contextTypes = _defineProperty({}, MEMORY_GAME_CONTEXT, _propTypes2.default.object.isRequired);

var MemoryGame = exports.MemoryGame = function (_Component) {
  _inherits(MemoryGame, _Component);

  function MemoryGame(props) {
    var _this2 = this;

    _classCallCheck(this, MemoryGame);

    var _this = _possibleConstructorReturn(this, (MemoryGame.__proto__ || Object.getPrototypeOf(MemoryGame)).call(this, props));

    Object.defineProperty(_this, 'getPreparedCard', {
      enumerable: true,
      writable: true,
      value: function value(display, _value) {
        return {
          value: _value,
          display: display,
          state: _MemoryCard.CARD_STATE.CLOSED
        };
      }
    });
    Object.defineProperty(_this, 'prepareCardPairs', {
      enumerable: true,
      writable: true,
      value: function value(pairs) {
        return pairs.map(function (pair, index) {
          return pair.map(function (card) {
            return _this.getPreparedCard(card, index);
          });
        }).reduce(function (prev, curr) {
          return prev.concat(curr);
        });
      }
    });
    Object.defineProperty(_this, 'prepareSingleCards', {
      enumerable: true,
      writable: true,
      value: function value(cards) {
        var preparedCards = cards.map(_this.getPreparedCard);
        return preparedCards.concat((0, _lodash.cloneDeep)(preparedCards));
      }
    });
    Object.defineProperty(_this, 'getInitialState', {
      enumerable: true,
      writable: true,
      value: function value(cards) {
        var randomise = _this.props.dryRun ? _lodash.identity : _lodash.shuffle;
        var prepareCards = Array.isArray(cards[0]) ? _this.prepareCardPairs : _this.prepareSingleCards;

        return {
          moves: 0,
          pairsFound: 0,
          glimpse: false,
          cards: randomise(prepareCards(cards))
        };
      }
    });
    Object.defineProperty(_this, 'resetGame', {
      enumerable: true,
      writable: true,
      value: function value(cards) {
        clearTimeout(_this.timeout);
        _this.setState(_this.getInitialState(cards), function () {
          if (_this.props.glimpse) {
            _this.startGlimpse();
          }
        });
      }
    });
    Object.defineProperty(_this, 'startGlimpse', {
      enumerable: true,
      writable: true,
      value: function () {
        var _ref2 = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
          var cards;
          return regeneratorRuntime.wrap(function _callee$(_context) {
            while (1) {
              switch (_context.prev = _context.next) {
                case 0:
                  cards = (0, _lodash.cloneDeep)(_this.state.cards).map(function (card) {
                    return _extends({}, card, {
                      state: _MemoryCard.CARD_STATE.OPEN
                    });
                  });

                  _this.setState({
                    cards: cards,
                    glimpse: true
                  });
                  _this.timeout = setTimeout(function () {
                    _this.closeOpenCards();
                    _this.setState({
                      glimpse: false
                    });
                  }, _this.props.glimpse);

                case 3:
                case 'end':
                  return _context.stop();
              }
            }
          }, _callee, _this2);
        }));

        return function value() {
          return _ref2.apply(this, arguments);
        };
      }()
    });
    Object.defineProperty(_this, 'getOpenCards', {
      enumerable: true,
      writable: true,
      value: function value() {
        return (0, _lodash.cloneDeep)(_this.state.cards).filter(function (card) {
          return card.state === _MemoryCard.CARD_STATE.OPEN;
        });
      }
    });
    Object.defineProperty(_this, 'openCard', {
      enumerable: true,
      writable: true,
      value: function value(position) {
        var cards = (0, _lodash.cloneDeep)(_this.state.cards);
        cards[position].state = cards[position].state === _MemoryCard.CARD_STATE.CLOSED ? _MemoryCard.CARD_STATE.OPEN : cards[position].state;

        _this.setState({ cards: cards }, _this.checkForPair);
      }
    });
    Object.defineProperty(_this, 'closeOpenCards', {
      enumerable: true,
      writable: true,
      value: function value() {
        clearTimeout(_this.timeout);
        var cards = (0, _lodash.cloneDeep)(_this.state.cards).map(function (card) {
          return _extends({}, card, {
            state: card.state === _MemoryCard.CARD_STATE.OPEN ? _MemoryCard.CARD_STATE.CLOSED : card.state
          });
        });

        _this.setState({ cards: cards });
      }
    });
    Object.defineProperty(_this, 'findCardPair', {
      enumerable: true,
      writable: true,
      value: function value() {
        var cards = (0, _lodash.cloneDeep)(_this.state.cards).map(function (card) {
          return _extends({}, card, {
            state: card.state === _MemoryCard.CARD_STATE.OPEN ? _MemoryCard.CARD_STATE.FOUND : card.state
          });
        });

        _this.setState({ cards: cards });
      }
    });
    Object.defineProperty(_this, 'hasGameEnded', {
      enumerable: true,
      writable: true,
      value: function value() {
        (0, _lodash.cloneDeep)(_this.state.cards).some(function (card) {
          return card.state !== _MemoryCard.CARD_STATE.FOUND;
        });
      }
    });
    Object.defineProperty(_this, 'scheduleCloseCards', {
      enumerable: true,
      writable: true,
      value: function value() {
        var delay = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 700;

        _this.timeout = setTimeout(_this.closeOpenCards, delay);
      }
    });
    Object.defineProperty(_this, 'incrementCounter', {
      enumerable: true,
      writable: true,
      value: function value() {
        _this.setState({
          moves: _this.state.moves + 1
        });
      }
    });
    Object.defineProperty(_this, 'incrementFoundPairsCounter', {
      enumerable: true,
      writable: true,
      value: function value() {
        _this.setState({
          pairsFound: _this.state.pairsFound + 1
        });
      }
    });
    Object.defineProperty(_this, 'checkForPair', {
      enumerable: true,
      writable: true,
      value: function value() {
        var openCards = _this.getOpenCards();
        if (openCards.length !== 2) {
          return;
        }

        _this.incrementCounter();

        if (openCards[0].value === openCards[1].value) {
          _this.findCardPair();
          _this.incrementFoundPairsCounter();
        } else {
          _this.scheduleCloseCards();
        }
      }
    });
    Object.defineProperty(_this, 'handleCardClick', {
      enumerable: true,
      writable: true,
      value: function value(position) {
        return function () {
          if (_this.state.glimpse) {
            return;
          }
          var openCards = _this.getOpenCards(_this.state);

          switch (openCards.length) {
            case 0:
              {
                _this.openCard(position);
                break;
              }
            case 1:
              {
                _this.openCard(position);
                break;
              }
            default:
              {
                break;
              }
          }
        };
      }
    });

    if (props.cards.length !== BOARD_SIZE / 2) {
      throw new Error('Wrong card set size: <MemoryGame /> expects ' + BOARD_SIZE / 2 + ' cards or pairs');
    }
    _this.state = _this.getInitialState(props.cards);
    return _this;
  }

  _createClass(MemoryGame, [{
    key: 'componentWillMount',
    value: function componentWillMount() {
      var _props = this.props,
          glimpse = _props.glimpse,
          glimpseOnMount = _props.glimpseOnMount;

      if (glimpse && glimpseOnMount) {
        this.startGlimpse();
      }
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if (nextProps.cards !== this.props.cards) {
        this.resetGame(nextProps.cards);
      }
    }
  }, {
    key: 'getChildContext',
    value: function getChildContext() {
      return _defineProperty({}, MEMORY_GAME_CONTEXT, {
        cards: this.getMemoryCards(),
        resetGame: this.resetGame.bind(this, this.props.cards),
        movesCounter: this.state.moves,
        pairsFoundCounter: this.state.pairsFound
      });
    }
  }, {
    key: 'getMemoryCards',
    value: function getMemoryCards() {
      var _this3 = this;

      return (0, _lodash.cloneDeep)(this.state.cards).map(function (card, position) {
        return _react2.default.createElement(
          _MemoryCard2.default,
          {
            onClick: _this3.handleCardClick(position),
            key: position,
            state: card.state
          },
          card.display
        );
      });
    }
  }, {
    key: 'render',
    value: function render() {
      return _react2.default.createElement(
        'div',
        { className: 'memory-game' },
        this.props.children
      );
    }
  }]);

  return MemoryGame;
}(_react.Component);

Object.defineProperty(MemoryGame, 'propTypes', {
  enumerable: true,
  writable: true,
  value: {
    cards: _propTypes2.default.arrayOf(_propTypes2.default.any).isRequired,
    glimpse: _propTypes2.default.number,
    glimpseOnMount: _propTypes2.default.bool
  }
});
Object.defineProperty(MemoryGame, 'Reset', {
  enumerable: true,
  writable: true,
  value: ResetButton
});
Object.defineProperty(MemoryGame, 'Board', {
  enumerable: true,
  writable: true,
  value: Board
});
Object.defineProperty(MemoryGame, 'MovesCounter', {
  enumerable: true,
  writable: true,
  value: MovesCounter
});
Object.defineProperty(MemoryGame, 'PairsFoundCounter', {
  enumerable: true,
  writable: true,
  value: PairsFoundCounter
});
Object.defineProperty(MemoryGame, 'childContextTypes', {
  enumerable: true,
  writable: true,
  value: _defineProperty({}, MEMORY_GAME_CONTEXT, _propTypes2.default.object.isRequired)
});
exports.default = MemoryGame;