Get Programming with JavaScript

Get Programming with JavaScript - Listing 13.20

Listing 13.20 - The Place constructor as a module

(function () {

    var Place = function (title, description) {
        var newLine = spacer.newLine();
        var items = [];
        var exits = {};

        var getItemsInfo = function () {
            var itemsString = "Items: " + newLine;
            items.forEach(function (item) {
                itemsString += "   - " + item;
                itemsString += newLine;
            });
            return itemsString;
        };

        var getExitsInfo = function () {
            var exitsString = "Exits from " + title;
            exitsString += ":" + newLine;

            Object.keys(exits).forEach(function (key) {
                exitsString += "   - " + key;
                exitsString += newLine;
            });

            return exitsString;
        };

        var getTitleInfo = function () {
            return spacer.box(title, title.length + 4, "=");
        };

        var getInfo = function () {
            var infoString = getTitleInfo();
            infoString += description;
            infoString += newLine + newLine;
            infoString += getItemsInfo() + newLine;
            infoString += getExitsInfo();
            infoString += spacer.line(40, "=") + newLine;
            return infoString;
        };

        this.showInfo = function () {
            console.log(getInfo());
        };

        this.addItem = function (item) {
            items.push(item);
        };

        this.addExit = function (direction, exit) {
            exits[direction] = exit;
        };

        this.getExit = function (direction) {
            return exits[direction];
        };

        this.getLastItem = function () {
            return items.pop();
        };
    };

    if (window.theCrypt === undefined) {
        window.theCrypt = {};
    }

    theCrypt.Place = Place;

})();