// Get Programming with JavaScript

// Listing 20.08

// Map Manager

// Uses gpwj.data and theCrypt.Place

​

(function () {

  "use strict";

​

  var placesStore = {};

  function addPlace (placeData) {

    var place = new theCrypt.Place(placeData.title, placeData.description);

    placesStore[placeData.id] = place;

    if (placeData.items !== undefined) {

      placeData.items.forEach(place.addItem);

    }

    if (placeData.exits !== undefined) {

      placeData.exits.forEach(function (exit) {

        place.addExit(exit.direction, exit.id);

        place.addChallenge(exit.direction, exit.challenge);

      });

    }

    return place;

  }

  function loadPlace (id, callback) {

    var place = placesStore[id];

    if (place === undefined) {

      gpwj.data.load(id, function (placeData) {

        var place = addPlace(placeData);

        callback(place);

      });    

    } else {

      callback(place);

    }

  }

  if (window.theCrypt === undefined) {

    window.theCrypt = {};

  }

  theCrypt.map = {

    loadPlace: loadPlace

  };

})();