847eb6c48e
Fixed issue where alpha not being set correctly in canvas spriteBatch Fixed issue where previous stage events did not get removed correctly
301 lines
10 KiB
HTML
301 lines
10 KiB
HTML
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<h1 class="file-heading">File: src/pixi/loaders/SpriteSheetLoader.js</h1>
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<pre class="code prettyprint linenums">
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/**
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* @author Mat Groves http://matgroves.com/ @Doormat23
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*/
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/**
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* The sprite sheet loader is used to load in JSON sprite sheet data
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* To generate the data you can use http://www.codeandweb.com/texturepacker and publish in the 'JSON' format
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* There is a free version so thats nice, although the paid version is great value for money.
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* It is highly recommended to use Sprite sheets (also know as a 'texture atlas') as it means sprites can be batched and drawn together for highly increased rendering speed.
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* Once the data has been loaded the frames are stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrameId() and PIXI.Sprite.fromFrameId()
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* This loader will load the image file that the Spritesheet points to as well as the data.
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* When loaded this class will dispatch a 'loaded' event
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*
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* @class SpriteSheetLoader
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* @uses EventTarget
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* @constructor
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* @param url {String} The url of the sprite sheet JSON file
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* @param crossorigin {Boolean} Whether requests should be treated as crossorigin
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*/
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PIXI.SpriteSheetLoader = function (url, crossorigin) {
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/*
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* i use texture packer to load the assets..
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* http://www.codeandweb.com/texturepacker
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* make sure to set the format as 'JSON'
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*/
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PIXI.EventTarget.call(this);
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/**
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* The url of the bitmap font data
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*
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* @property url
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* @type String
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*/
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this.url = url;
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/**
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* Whether the requests should be treated as cross origin
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*
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* @property crossorigin
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* @type Boolean
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*/
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this.crossorigin = crossorigin;
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/**
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* [read-only] The base url of the bitmap font data
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*
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* @property baseUrl
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* @type String
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* @readOnly
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*/
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this.baseUrl = url.replace(/[^\/]*$/, '');
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/**
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* The texture being loaded
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*
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* @property texture
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* @type Texture
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*/
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this.texture = null;
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/**
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* The frames of the sprite sheet
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*
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* @property frames
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* @type Object
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*/
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this.frames = {};
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};
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// constructor
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PIXI.SpriteSheetLoader.prototype.constructor = PIXI.SpriteSheetLoader;
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/**
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* This will begin loading the JSON file
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*
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* @method load
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*/
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PIXI.SpriteSheetLoader.prototype.load = function () {
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var scope = this;
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var jsonLoader = new PIXI.JsonLoader(this.url, this.crossorigin);
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jsonLoader.addEventListener('loaded', function (event) {
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scope.json = event.content.json;
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scope.onLoaded();
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});
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jsonLoader.load();
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};
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/**
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* Invoke when all files are loaded (json and texture)
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*
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* @method onLoaded
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* @private
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*/
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PIXI.SpriteSheetLoader.prototype.onLoaded = function () {
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this.dispatchEvent({
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type: 'loaded',
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content: this
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});
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};
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</pre>
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