/* Overviewer.js
 *
 * Must be the first file included from index.html
 */


var overviewer = {};


/**
 * This holds the map, probably the most important var in this file
 */
overviewer.map = null;
overviewer.worldCtrl = null;
overviewer.layerCtrl = null;
overviewer.compass = null;
overviewer.coord_box = null;
overviewer.current_world = null;

/// Records the current layer by name (if any) of each world
overviewer.current_layer = {};


overviewer.collections = {
        /**
         * MapTypes that aren't overlays will end up in here.
         */
        'mapTypes':     {},
        /**
         * The mapType names are in here.
         */
        'mapTypeIds':   [],
        /**
         * This is the current infoWindow object, we keep track of it so that
         * there is only one open at a time.
         */
        'infoWindow':   null,

        /**
         * When switching regionsets, where should we zoom to?
         * Defaults to spawn.  Stored as map of world names to [latlng, zoom]
         */
        'centers': {},

        'overlays': {},

        'worldViews': [],

        'haveSigns': false,

        /**
         * Hold the raw marker data for each tilest
         */
        'markerInfo': {},

        /**
         * holds a reference to the spawn marker.
         */
        'spawnMarker': null,

        /**
        * if a user visits a specific URL, this marker will point to the
        * coordinates in the hash
        */
        'locationMarker': null
    };

overviewer.classes = {
        /**
         * Our custom projection maps Latitude to Y, and Longitude to X as
         * normal, but it maps the range [0.0, 1.0] to [0, tileSize] in both
         * directions so it is easier to position markers, etc. based on their
         * position (find their position in the lowest-zoom image, and divide
         * by tileSize)
         */
        'MapProjection' : function() {
            this.inverseTileSize = 1.0 / overviewerConfig.CONST.tileSize;
        },
        /**
         * This is a mapType used only for debugging, to draw a grid on the screen
         * showing the tile co-ordinates and tile path. Currently the tile path
         * part does not work.
         *
         * @param google.maps.Size tileSize
         */
        'CoordMapType': function(tileSize) {
            this.tileSize = tileSize;
        }

};