tv_xiaoyouxi/games/dwy/cocos2d-html5-v2.2.3/cocos2d/CCTMXTiledMap.js

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/**
 Orthogonal orientation
 * @constant
 * @type Number
 */
cc.TMX_ORIENTATION_ORTHO = 0;

/**
 * Hexagonal orientation
 * @constant
 * @type Number
 */

cc.TMX_ORIENTATION_HEX = 1;

/**
 * Isometric orientation
 * @constant
 * @type Number
 */
cc.TMX_ORIENTATION_ISO = 2;

/**
 * <p>cc.TMXTiledMap knows how to parse and render a TMX map.</p>
 *
 * <p>It adds support for the TMX tiled map format used by http://www.mapeditor.org <br />
 * It supports isometric, hexagonal and orthogonal tiles.<br />
 * It also supports object groups, objects, and properties.</p>
 *
 * <p>Features: <br />
 * - Each tile will be treated as an cc.Sprite<br />
 * - The sprites are created on demand. They will be created only when you call "layer.getTileAt(position)" <br />
 * - Each tile can be rotated / moved / scaled / tinted / "opacitied", since each tile is a cc.Sprite<br />
 * - Tiles can be added/removed in runtime<br />
 * - The z-order of the tiles can be modified in runtime<br />
 * - Each tile has an anchorPoint of (0,0) <br />
 * - The anchorPoint of the TMXTileMap is (0,0) <br />
 * - The TMX layers will be added as a child <br />
 * - The TMX layers will be aliased by default <br />
 * - The tileset image will be loaded using the cc.TextureCache <br />
 * - Each tile will have a unique tag<br />
 * - Each tile will have a unique z value. top-left: z=1, bottom-right: z=max z<br />
 * - Each object group will be treated as an cc.MutableArray <br />
 * - Object class which will contain all the properties in a dictionary<br />
 * - Properties can be assigned to the Map, Layer, Object Group, and Object</p>
 *
 * <p>Limitations: <br />
 * - It only supports one tileset per layer. <br />
 * - Embeded images are not supported <br />
 * - It only supports the XML format (the JSON format is not supported)</p>
 *
 * <p>Technical description: <br />
 * Each layer is created using an cc.TMXLayer (subclass of cc.SpriteBatchNode). If you have 5 layers, then 5 cc.TMXLayer will be created, <br />
 * unless the layer visibility is off. In that case, the layer won't be created at all. <br />
 * You can obtain the layers (cc.TMXLayer objects) at runtime by: <br />
 * - map.getChildByTag(tag_number);  // 0=1st layer, 1=2nd layer, 2=3rd layer, etc...<br />
 * - map.getLayer(name_of_the_layer); </p>
 *
 * <p>Each object group is created using a cc.TMXObjectGroup which is a subclass of cc.MutableArray.<br />
 * You can obtain the object groups at runtime by: <br />
 * - map.getObjectGroup(name_of_the_object_group); </p>
 *
 * <p>Each object is a cc.TMXObject.</p>
 *
 * <p>Each property is stored as a key-value pair in an cc.MutableDictionary.<br />
 * You can obtain the properties at runtime by: </p>
 *
 * <p>map.getProperty(name_of_the_property); <br />
 * layer.getProperty(name_of_the_property); <br />
 * objectGroup.getProperty(name_of_the_property); <br />
 * object.getProperty(name_of_the_property);</p>
 * @class
 * @extends cc.Node
 */
cc.TMXTiledMap = cc.NodeRGBA.extend(/** @lends cc.TMXTiledMap# */{
    //the map's size property measured in tiles
    _mapSize:null,
    _tileSize:null,
    _properties:null,
    _objectGroups:null,
    _mapOrientation:null,
    //tile properties
    _tileProperties:null,

    ctor:function(){
        cc.Node.prototype.ctor.call(this);
        this._mapSize = cc.SizeZero();
        this._tileSize = cc.SizeZero();
        this._properties = null;
        this._objectGroups = null;
        this._mapOrientation = null;

        this._tileProperties = null;
    },

    /**
     * @return {cc.Size}
     */
    getMapSize:function () {
        return cc.size(this._mapSize.width, this._mapSize.height);
    },

    /**
     * @param {cc.Size} Var
     */
    setMapSize:function (Var) {
        this._mapSize.width = Var.width;
        this._mapSize.height = Var.height;
    },

    /**
     * @return {cc.Size}
     */
    getTileSize:function () {
        return cc.size(this._tileSize.width, this._tileSize.height);
    },

    /**
     * @param {cc.Size} Var
     */
    setTileSize:function (Var) {
        this._tileSize.width = Var.width;
        this._tileSize.height = Var.height;
    },

    /**
     * map orientation
     * @return {Number}
     */
    getMapOrientation:function () {
        return this._mapOrientation;
    },

    /**
     * @param {Number} Var
     */
    setMapOrientation:function (Var) {
        this._mapOrientation = Var;
    },

    /**
     * object groups
     * @return {Array}
     */
    getObjectGroups:function () {
        return this._objectGroups;
    },

    /**
     * @param {Array} Var
     */
    setObjectGroups:function (Var) {
        this._objectGroups = Var;
    },

    /**
     * properties
     * @return {object}
     */
    getProperties:function () {
        return this._properties;
    },

    /**
     * @param {object} Var
     */
    setProperties:function (Var) {
        this._properties = Var;
    },

    /**
     * @param {String} tmxFile
     * @param {String} [resourcePath=]
     * @return {Boolean}
     * @example
     * //example
     * var map = new cc.TMXTiledMap()
     * map.initWithTMXFile("hello.tmx");
     */
    initWithTMXFile:function (tmxFile,resourcePath) {
        if(!tmxFile || tmxFile.length == 0)
            throw "cc.TMXTiledMap.initWithTMXFile(): tmxFile should be non-null or non-empty string.";
        this.setContentSize(0, 0);
        var mapInfo = cc.TMXMapInfo.create(tmxFile,resourcePath);
        if (!mapInfo)
            return false;

        var locTilesets = mapInfo.getTilesets();
        if(!locTilesets || locTilesets.length === 0)
            cc.log("cc.TMXTiledMap.initWithTMXFile(): Map not found. Please check the filename.");
        this._buildWithMapInfo(mapInfo);
        return true;
    },

    initWithXML:function(tmxString, resourcePath){
        this.setContentSize(0, 0);

        var mapInfo = cc.TMXMapInfo.createWithXML(tmxString, resourcePath);
        var locTilesets = mapInfo.getTilesets();
        if(!locTilesets || locTilesets.length === 0)
            cc.log("cc.TMXTiledMap.initWithXML(): Map not found. Please check the filename.");
        this._buildWithMapInfo(mapInfo);
        return true;
    },

    _buildWithMapInfo:function (mapInfo) {
        this._mapSize = mapInfo.getMapSize();
        this._tileSize = mapInfo.getTileSize();
        this._mapOrientation = mapInfo.getOrientation();
        this._objectGroups = mapInfo.getObjectGroups();
        this._properties = mapInfo.getProperties();
        this._tileProperties = mapInfo.getTileProperties();

        var idx = 0;
        var layers = mapInfo.getLayers();
        if (layers) {
            var layerInfo = null;
            for (var i = 0, len = layers.length; i < len; i++) {
                layerInfo = layers[i];
                if (layerInfo && layerInfo.visible) {
                    var child = this._parseLayer(layerInfo, mapInfo);
                    this.addChild(child, idx, idx);
                    // update content size with the max size
                    var childSize = child.getContentSize();
                    var currentSize = this.getContentSize();
                    this.setContentSize(cc.size(Math.max(currentSize.width, childSize.width), Math.max(currentSize.height, childSize.height)));
                    idx++;
                }
            }
        }
    },

    allLayers: function () {
        var retArr = [], locChildren = this._children;
        for(var i = 0, len = locChildren.length;i< len;i++){
            var layer = locChildren[i];
            if(layer && layer instanceof cc.TMXLayer)
                retArr.push(layer);
        }
        return retArr;
    },

    /**
     * return the TMXLayer for the specific layer
     * @param {String} layerName
     * @return {cc.TMXLayer}
     */
    getLayer:function (layerName) {
        if(!layerName || layerName.length === 0)
            throw "cc.TMXTiledMap.getLayer(): layerName should be non-null or non-empty string.";
        var locChildren = this._children;
        for (var i = 0; i < locChildren.length; i++) {
            var layer = locChildren[i];
            if (layer && layer.getLayerName() == layerName)
                return layer;
        }
        // layer not found
        return null;
    },

    /**
     * Return the TMXObjectGroup for the specific group
     * @param {String} groupName
     * @return {cc.TMXObjectGroup}
     */
    getObjectGroup:function (groupName) {
        if(!groupName || groupName.length === 0)
            throw "cc.TMXTiledMap.getObjectGroup(): groupName should be non-null or non-empty string.";
        if (this._objectGroups) {
            for (var i = 0; i < this._objectGroups.length; i++) {
                var objectGroup = this._objectGroups[i];
                if (objectGroup && objectGroup.getGroupName() == groupName) {
                    return objectGroup;
                }
            }
        }
        // objectGroup not found
        return null;
    },

    /**
     * Return the value for the specific property name
     * @param {String} propertyName
     * @return {String}
     */
    getProperty:function (propertyName) {
        return this._properties[propertyName.toString()];
    },

    /**
     * Return properties dictionary for tile GID
     * @param {Number} GID
     * @return {object}
     */
    propertiesForGID:function (GID) {
        return this._tileProperties[GID];
    },

    _parseLayer:function (layerInfo, mapInfo) {
        var tileset = this._tilesetForLayer(layerInfo, mapInfo);
        var layer = cc.TMXLayer.create(tileset, layerInfo, mapInfo);
        // tell the layerinfo to release the ownership of the tiles map.
        layerInfo.ownTiles = false;
        layer.setupTiles();
        return layer;
    },

    _tilesetForLayer:function (layerInfo, mapInfo) {
        var size = layerInfo._layerSize;
        var tilesets = mapInfo.getTilesets();
        if (tilesets) {
            for (var i = tilesets.length - 1; i >= 0; i--) {
                var tileset = tilesets[i];
                if (tileset) {
                    for (var y = 0; y < size.height; y++) {
                        for (var x = 0; x < size.width; x++) {
                            var pos = x + size.width * y;
                            var gid = layerInfo._tiles[pos];
                            if (gid != 0) {
                                // Optimization: quick return
                                // if the layer is invalid (more than 1 tileset per layer) an cc.Assert will be thrown later
                                if (((gid & cc.TMX_TILE_FLIPPED_MASK)>>>0) >= tileset.firstGid) {
                                    return tileset;
                                }
                            }

                        }
                    }
                }
            }
        }

        // If all the tiles are 0, return empty tileset
        cc.log("cocos2d: Warning: TMX Layer " + layerInfo.name + " has no tiles");
        return null;
    }
});

/**
 * Creates a TMX Tiled Map with a TMX file.
 * Implementation cc.TMXTiledMap
 * @param {String} tmxFile
 * @param {String} resourcePath
 * @return {cc.TMXTiledMap|undefined}
 * @example
 * //example
 * var map = cc.TMXTiledMap.create("hello.tmx");
 */
cc.TMXTiledMap.create = function (tmxFile, resourcePath) {
    var ret = new cc.TMXTiledMap();
    if (ret.initWithTMXFile(tmxFile,resourcePath)) {
        return ret;
    }
    return null;
};

/**
 * initializes a TMX Tiled Map with a TMX formatted XML string and a path to TMX resources
 * @param {String} tmxString
 * @param {String} resourcePath
 * @return {cc.TMXTiledMap|undefined}
 */
cc.TMXTiledMap.createWithXML = function(tmxString, resourcePath){
    var tileMap = new cc.TMXTiledMap();
    if(tileMap.initWithXML(tmxString,resourcePath))
        return tileMap;
    return null;
};