phaser/docs/Cache.js.html at 15be3f86f3ebd6cc17ceea9c225bd5fa2405eeaa · ITCSsDeveloper/phaser · GitHub

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<!DOCTYPE html>

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	<title>Phaser Source: loader/Cache.js</title>

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		<h1 class="page-title">Source: loader/Cache.js</h1>

    <section>
        <article>
            <pre class="sunlight-highlight-javascript linenums">/**
* @author       Richard Davey &lt;rich@photonstorm.com>
* @copyright    2014 Photon Storm Ltd.
* @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/

/**
* Phaser.Cache constructor.
*
* @class Phaser.Cache
* @classdesc A game only has one instance of a Cache and it is used to store all externally loaded assets such as images, sounds and data files as a result of Loader calls. Cached items use string based keys for look-up.
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
*/
Phaser.Cache = function (game) {

    /**
    * @property {Phaser.Game} game - Local reference to game.
    */
    this.game = game;

    /**
    * @property {object} game - Canvas key-value container.
    * @private
    */
    this._canvases = {};

    /**
    * @property {object} _images - Image key-value container.
    * @private
    */
    this._images = {};

    /**
    * @property {object} _textures - RenderTexture key-value container.
    * @private
    */
    this._textures = {};

    /**
    * @property {object} _sounds - Sound key-value container.
    * @private
    */
    this._sounds = {};

    /**
    * @property {object} _text - Text key-value container.
    * @private
    */
    this._text = {};

    /**
    * @property {object} _physics - Physics data key-value container.
    * @private
    */
    this._physics = {};

    /**
    * @property {object} _tilemaps - Tilemap key-value container.
    * @private
    */
    this._tilemaps = {};

    /**
    * @property {object} _binary - Binary file key-value container.
    * @private
    */
    this._binary = {};

    /**
    * @property {object} _bitmapDatas - BitmapData key-value container.
    * @private
    */
    this._bitmapDatas = {};

    /**
    * @property {object} _bitmapFont - BitmapFont key-value container.
    * @private
    */
    this._bitmapFont = {};

    this.addDefaultImage();
    this.addMissingImage();

    /**
    * @property {Phaser.Signal} onSoundUnlock - This event is dispatched when the sound system is unlocked via a touch event on cellular devices.
    */
    this.onSoundUnlock = new Phaser.Signal();

};

/**
* @constant
* @type {number}
*/
Phaser.Cache.CANVAS = 1;

/**
* @constant
* @type {number}
*/
Phaser.Cache.IMAGE = 2;

/**
* @constant
* @type {number}
*/
Phaser.Cache.TEXTURE = 3;

/**
* @constant
* @type {number}
*/
Phaser.Cache.SOUND = 4;

/**
* @constant
* @type {number}
*/
Phaser.Cache.TEXT = 5;

/**
* @constant
* @type {number}
*/
Phaser.Cache.PHYSICS = 6;

/**
* @constant
* @type {number}
*/
Phaser.Cache.TILEMAP = 7;

/**
* @constant
* @type {number}
*/
Phaser.Cache.BINARY = 8;

/**
* @constant
* @type {number}
*/
Phaser.Cache.BITMAPDATA = 9;

/**
* @constant
* @type {number}
*/
Phaser.Cache.BITMAPFONT = 10;

Phaser.Cache.prototype = {

    /**
    * Add a new canvas object in to the cache.
    *
    * @method Phaser.Cache#addCanvas
    * @param {string} key - Asset key for this canvas.
    * @param {HTMLCanvasElement} canvas - Canvas DOM element.
    * @param {CanvasRenderingContext2D} context - Render context of this canvas.
    */
    addCanvas: function (key, canvas, context) {

        this._canvases[key] = { canvas: canvas, context: context };

    },

    /**
    * Add a binary object in to the cache.
    *
    * @method Phaser.Cache#addBinary
    * @param {string} key - Asset key for this binary data.
    * @param {object} binaryData - The binary object to be addded to the cache.
    */
    addBinary: function (key, binaryData) {

        this._binary[key] = binaryData;

    },

    /**
    * Add a BitmapData object in to the cache.
    *
    * @method Phaser.Cache#addBitmapData
    * @param {string} key - Asset key for this BitmapData.
    * @param {Phaser.BitmapData} bitmapData - The BitmapData object to be addded to the cache.
    * @return {Phaser.BitmapData} The BitmapData object to be addded to the cache.
    */
    addBitmapData: function (key, bitmapData) {

        this._bitmapDatas[key] = bitmapData;

        return bitmapData;

    },

    /**
    * Add a new Phaser.RenderTexture in to the cache.
    *
    * @method Phaser.Cache#addRenderTexture
    * @param {string} key - The unique key by which you will reference this object.
    * @param {Phaser.Texture} texture - The texture to use as the base of the RenderTexture.
    */
    addRenderTexture: function (key, texture) {

        var frame = new Phaser.Frame(0, 0, 0, texture.width, texture.height, '', '');

        this._textures[key] = { texture: texture, frame: frame };

    },

    /**
    * Add a Phaser.BitmapFont in to the cache.
    *
    * @method Phaser.Cache#addBitmapFont
    * @param {string} key - The unique key by which you will reference this object.
    * @param {Phaser.BitmapFont} texture - The BitmapFont object to be stored. This can be applied to any Image/Sprite as a texture.
    */
    addBitmapFont: function (key, texture) {

        this._bitmapFont[key] = texture;

    },

    /**
    * Add a new sprite sheet in to the cache.
    *
    * @method Phaser.Cache#addSpriteSheet
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of this sprite sheet file.
    * @param {object} data - Extra sprite sheet data.
    * @param {number} frameWidth - Width of the sprite sheet.
    * @param {number} frameHeight - Height of the sprite sheet.
    * @param {number} [frameMax=-1] - How many frames stored in the sprite sheet. If -1 then it divides the whole sheet evenly.
    * @param {number} [margin=0] - If the frames have been drawn with a margin, specify the amount here.
    * @param {number} [spacing=0] - If the frames have been drawn with spacing between them, specify the amount here.
    */
    addSpriteSheet: function (key, url, data, frameWidth, frameHeight, frameMax, margin, spacing) {

        this._images[key] = { url: url, data: data, spriteSheet: true, frameWidth: frameWidth, frameHeight: frameHeight, margin: margin, spacing: spacing };

        PIXI.BaseTextureCache[key] = new PIXI.BaseTexture(data);
        PIXI.TextureCache[key] = new PIXI.Texture(PIXI.BaseTextureCache[key]);

        this._images[key].frameData = Phaser.AnimationParser.spriteSheet(this.game, key, frameWidth, frameHeight, frameMax, margin, spacing);

    },

    /**
    * Add a new tilemap to the Cache.
    *
    * @method Phaser.Cache#addTilemap
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of the tilemap image.
    * @param {object} mapData - The tilemap data object (either a CSV or JSON file).
    * @param {number} format - The format of the tilemap data.
    */
    addTilemap: function (key, url, mapData, format) {

        this._tilemaps[key] = { url: url, data: mapData, format: format };

    },

    /**
    * Add a new texture atlas to the Cache.
    *
    * @method Phaser.Cache#addTextureAtlas
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of this texture atlas file.
    * @param {object} data - Extra texture atlas data.
    * @param {object} atlasData  - Texture atlas frames data.
    * @param {number} format - The format of the texture atlas.
    */
    addTextureAtlas: function (key, url, data, atlasData, format) {

        this._images[key] = { url: url, data: data, spriteSheet: true };

        PIXI.BaseTextureCache[key] = new PIXI.BaseTexture(data);
        PIXI.TextureCache[key] = new PIXI.Texture(PIXI.BaseTextureCache[key]);

        if (format == Phaser.Loader.TEXTURE_ATLAS_JSON_ARRAY)
        {
            this._images[key].frameData = Phaser.AnimationParser.JSONData(this.game, atlasData, key);
        }
        else if (format == Phaser.Loader.TEXTURE_ATLAS_JSON_HASH)
        {
            this._images[key].frameData = Phaser.AnimationParser.JSONDataHash(this.game, atlasData, key);
        }
        else if (format == Phaser.Loader.TEXTURE_ATLAS_XML_STARLING)
        {
            this._images[key].frameData = Phaser.AnimationParser.XMLData(this.game, atlasData, key);
        }

    },

    /**
    * Add a new Bitmap Font to the Cache.
    *
    * @method Phaser.Cache#addBitmapFont
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of this font xml file.
    * @param {object} data - Extra font data.
    * @param {object} xmlData - Texture atlas frames data.
    * @param {number} [xSpacing=0] - If you'd like to add additional horizontal spacing between the characters then set the pixel value here.
    * @param {number} [ySpacing=0] - If you'd like to add additional vertical spacing between the lines then set the pixel value here.
    */
    addBitmapFont: function (key, url, data, xmlData, xSpacing, ySpacing) {

        this._images[key] = { url: url, data: data, spriteSheet: true };

        PIXI.BaseTextureCache[key] = new PIXI.BaseTexture(data);
        PIXI.TextureCache[key] = new PIXI.Texture(PIXI.BaseTextureCache[key]);

        Phaser.LoaderParser.bitmapFont(this.game, xmlData, key, xSpacing, ySpacing);

    },

    /**
    * Add a new physics data object to the Cache.
    *
    * @method Phaser.Cache#addTilemap
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of the physics json data.
    * @param {object} JSONData - The physics data object (a JSON file).
    * @param {number} format - The format of the physics data.
    */
    addPhysicsData: function (key, url, JSONData, format) {

        this._physics[key] = { url: url, data: JSONData, format: format };

    },

    /**
    * Adds a default image to be used in special cases such as WebGL Filters. Is mapped to the key __default.
    *
    * @method Phaser.Cache#addDefaultImage
    * @protected
    */
    addDefaultImage: function () {

        var img = new Image();
        img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgAQMAAABJtOi3AAAAA1BMVEX///+nxBvIAAAAAXRSTlMAQObYZgAAABVJREFUeF7NwIEAAAAAgKD9qdeocAMAoAABm3DkcAAAAABJRU5ErkJggg==";

        this._images['__default'] = { url: null, data: img, spriteSheet: false };
        this._images['__default'].frame = new Phaser.Frame(0, 0, 0, 32, 32, '', '');

        PIXI.BaseTextureCache['__default'] = new PIXI.BaseTexture(img);
        PIXI.TextureCache['__default'] = new PIXI.Texture(PIXI.BaseTextureCache['__default']);

    },

    /**
    * Adds an image to be used when a key is wrong / missing. Is mapped to the key __missing.
    *
    * @method Phaser.Cache#addMissingImage
    * @protected
    */
    addMissingImage: function () {

        var img = new Image();
        img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAIAAAD8GO2jAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJ9JREFUeNq01ssOwyAMRFG46v//Mt1ESmgh+DFmE2GPOBARKb2NVjo+17PXLD8a1+pl5+A+wSgFygymWYHBb0FtsKhJDdZlncG2IzJ4ayoMDv20wTmSMzClEgbWYNTAkQ0Z+OJ+A/eWnAaR9+oxCF4Os0H8htsMUp+pwcgBBiMNnAwF8GqIgL2hAzaGFFgZauDPKABmowZ4GL369/0rwACp2yA/ttmvsQAAAABJRU5ErkJggg==";

        this._images['__missing'] = { url: null, data: img, spriteSheet: false };
        this._images['__missing'].frame = new Phaser.Frame(0, 0, 0, 32, 32, '', '');

        PIXI.BaseTextureCache['__missing'] = new PIXI.BaseTexture(img);
        PIXI.TextureCache['__missing'] = new PIXI.Texture(PIXI.BaseTextureCache['__missing']);

    },

    /**
    * Add a new text data.
    *
    * @method Phaser.Cache#addText
    * @param {string} key - Asset key for the text data.
    * @param {string} url - URL of this text data file.
    * @param {object} data - Extra text data.
    */
    addText: function (key, url, data) {

        this._text[key] = { url: url, data: data };

    },

    /**
    * Add a new image.
    *
    * @method Phaser.Cache#addImage
    * @param {string} key - The unique key by which you will reference this object.
    * @param {string} url - URL of this image file.
    * @param {object} data - Extra image data.
    */
    addImage: function (key, url, data) {

        this._images[key] = { url: url, data: data, spriteSheet: false };

        this._images[key].frame = new Phaser.Frame(0, 0, 0, data.width, data.height, key, this.game.rnd.uuid());

        PIXI.BaseTextureCache[key] = new PIXI.BaseTexture(data);
        PIXI.TextureCache[key] = new PIXI.Texture(PIXI.BaseTextureCache[key]);

    },

    /**
    * Add a new sound.
    *
    * @method Phaser.Cache#addSound
    * @param {string} key - Asset key for the sound.
    * @param {string} url - URL of this sound file.
    * @param {object} data - Extra sound data.
    * @param {boolean} webAudio - True if the file is using web audio.
    * @param {boolean} audioTag - True if the file is using legacy HTML audio.
    */
    addSound: function (key, url, data, webAudio, audioTag) {

        webAudio = webAudio || true;
        audioTag = audioTag || false;

        var decoded = false;

        if (audioTag)
        {
            decoded = true;
        }

        this._sounds[key] = { url: url, data: data, isDecoding: false, decoded: decoded, webAudio: webAudio, audioTag: audioTag, locked: this.game.sound.touchLocked };

    },

    /**
    * Reload a sound.
    *
    * @method Phaser.Cache#reloadSound
    * @param {string} key - Asset key for the sound.
    */
    reloadSound: function (key) {

        var _this = this;

        if (this._sounds[key])
        {
            this._sounds[key].data.src = this._sounds[key].url;

            this._sounds[key].data.addEventListener('canplaythrough', function () {
                return _this.reloadSoundComplete(key);
            }, false);

            this._sounds[key].data.load();
        }
    },

    /**
    * Fires the onSoundUnlock event when the sound has completed reloading.
    *
    * @method Phaser.Cache#reloadSoundComplete
    * @param {string} key - Asset key for the sound.
    */
    reloadSoundComplete: function (key) {

        if (this._sounds[key])
        {
            this._sounds[key].locked = false;
            this.onSoundUnlock.dispatch(key);
        }

    },

    /**
    * Updates the sound object in the cache.
    *
    * @method Phaser.Cache#updateSound
    * @param {string} key - Asset key for the sound.
    */
    updateSound: function (key, property, value) {

        if (this._sounds[key])
        {
            this._sounds[key][property] = value;
        }

    },

    /**
    * Add a new decoded sound.
    *
    * @method Phaser.Cache#decodedSound
    * @param {string} key - Asset key for the sound.
    * @param {object} data - Extra sound data.
    */
    decodedSound: function (key, data) {

        this._sounds[key].data = data;
        this._sounds[key].decoded = true;
        this._sounds[key].isDecoding = false;

    },

    /**
    * Get a canvas object from the cache by its key.
    *
    * @method Phaser.Cache#getCanvas
    * @param {string} key - Asset key of the canvas to retrieve from the Cache.
    * @return {object} The canvas object.
    */
    getCanvas: function (key) {

        if (this._canvases[key])
        {
            return this._canvases[key].canvas;
        }
        else
        {
            console.warn('Phaser.Cache.getCanvas: Invalid key: "' + key + '"');
        }

    },

    /**
    * Get a BitmapData object from the cache by its key.
    *
    * @method Phaser.Cache#getBitmapData
    * @param {string} key - Asset key of the BitmapData object to retrieve from the Cache.
    * @return {Phaser.BitmapData} The requested BitmapData object if found, or null if not.
    */
    getBitmapData: function (key) {

        if (this._bitmapDatas[key])
        {
            return this._bitmapDatas[key];
        }
        else
        {
            console.warn('Phaser.Cache.getBitmapData: Invalid key: "' + key + '"');
        }

    },

    /**
    * Get a BitmapFont object from the cache by its key.
    *
    * @method Phaser.Cache#getBitmapFont