314 lines
10 KiB
HTML
314 lines
10 KiB
HTML
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<title>src/pixi/loaders/AssetLoader.js - Pixi.JS</title>
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<em>API Docs for: 1.3.0</em>
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<li><a href="../classes/AbstractFilter.html">AbstractFilter</a></li>
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<li><a href="../classes/AssetLoader.html">AssetLoader</a></li>
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<li><a href="../classes/BaseTexture.html">BaseTexture</a></li>
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<li><a href="../classes/BitmapFontLoader.html">BitmapFontLoader</a></li>
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<h1 class="file-heading">File: src/pixi/loaders/AssetLoader.js</h1>
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<div class="file">
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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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* A Class that loads a bunch of images / sprite sheet / bitmap font files. Once the
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* assets have been loaded they are added to the PIXI Texture cache and can be accessed
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* easily through PIXI.Texture.fromImage() and PIXI.Sprite.fromImage()
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* When all items have been loaded this class will dispatch a "onLoaded" event
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* As each individual item is loaded this class will dispatch a "onProgress" event
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*
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* @class AssetLoader
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* @constructor
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* @uses EventTarget
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* @param {Array<String>} assetURLs an array of image/sprite sheet urls that you would like loaded
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* supported. Supported image formats include "jpeg", "jpg", "png", "gif". Supported
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* sprite sheet data formats only include "JSON" at this time. Supported bitmap font
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* data formats include "xml" and "fnt".
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* @param crossorigin {Boolean} Whether requests should be treated as crossorigin
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*/
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PIXI.AssetLoader = function(assetURLs, crossorigin)
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{
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PIXI.EventTarget.call(this);
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/**
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* The array of asset URLs that are going to be loaded
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*
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* @property assetURLs
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* @type Array<String>
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*/
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this.assetURLs = assetURLs;
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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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* Maps file extension to loader types
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*
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* @property loadersByType
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* @type Object
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*/
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this.loadersByType = {
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"jpg": PIXI.ImageLoader,
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"jpeg": PIXI.ImageLoader,
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"png": PIXI.ImageLoader,
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"gif": PIXI.ImageLoader,
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"json": PIXI.JsonLoader,
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"anim": PIXI.SpineLoader,
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"xml": PIXI.BitmapFontLoader,
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"fnt": PIXI.BitmapFontLoader
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};
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};
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/**
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* Fired when an item has loaded
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* @event onProgress
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*/
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/**
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* Fired when all the assets have loaded
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* @event onComplete
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*/
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// constructor
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PIXI.AssetLoader.prototype.constructor = PIXI.AssetLoader;
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/**
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* Starts loading the assets sequentially
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*
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* @method load
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*/
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PIXI.AssetLoader.prototype.load = function()
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{
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var scope = this;
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this.loadCount = this.assetURLs.length;
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for (var i=0; i < this.assetURLs.length; i++)
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{
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var fileName = this.assetURLs[i];
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var fileType = fileName.split(".").pop().toLowerCase();
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var loaderClass = this.loadersByType[fileType];
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if(!loaderClass)
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throw new Error(fileType + " is an unsupported file type");
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var loader = new loaderClass(fileName, this.crossorigin);
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loader.addEventListener("loaded", function()
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{
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scope.onAssetLoaded();
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});
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loader.load();
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}
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};
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/**
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* Invoked after each file is loaded
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*
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* @method onAssetLoaded
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* @private
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*/
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PIXI.AssetLoader.prototype.onAssetLoaded = function()
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{
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this.loadCount--;
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this.dispatchEvent({type: "onProgress", content: this});
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if(this.onProgress) this.onProgress();
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if(this.loadCount == 0)
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{
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this.dispatchEvent({type: "onComplete", content: this});
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if(this.onComplete) this.onComplete();
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}
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};
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</pre>
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</div>
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