356 lines
11 KiB
HTML
356 lines
11 KiB
HTML
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<h1 class="file-heading">File: src/pixi/loaders/JsonLoader.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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* The json file loader is used to load in JSON data and parsing it
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* When loaded this class will dispatch a "loaded" event
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* If load failed this class will dispatch a "error" event
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*
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* @class JsonLoader
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* @uses EventTarget
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* @constructor
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* @param url {String} The url of the 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.JsonLoader = function (url, crossorigin) {
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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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* [read-only] Whether the data has loaded yet
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*
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* @property loaded
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* @type Boolean
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* @readOnly
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*/
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this.loaded = false;
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};
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// constructor
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PIXI.JsonLoader.prototype.constructor = PIXI.JsonLoader;
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/**
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* Loads the JSON data
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*
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* @method load
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*/
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PIXI.JsonLoader.prototype.load = function () {
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this.ajaxRequest = new AjaxRequest();
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var scope = this;
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this.ajaxRequest.onreadystatechange = function () {
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scope.onJSONLoaded();
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};
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this.ajaxRequest.open("GET", this.url, true);
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if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType("application/json");
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this.ajaxRequest.send(null);
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};
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/**
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* Invoke when JSON file is loaded
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*
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* @method onJSONLoaded
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* @private
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*/
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PIXI.JsonLoader.prototype.onJSONLoaded = function () {
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if (this.ajaxRequest.readyState == 4) {
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if (this.ajaxRequest.status == 200 || window.location.href.indexOf("http") == -1) {
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this.json = JSON.parse(this.ajaxRequest.responseText);
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if(this.json.frames)
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{
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// sprite sheet
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var scope = this;
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var textureUrl = this.baseUrl + this.json.meta.image;
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var image = new PIXI.ImageLoader(textureUrl, this.crossorigin);
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var frameData = this.json.frames;
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this.texture = image.texture.baseTexture;
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image.addEventListener("loaded", function (event) {
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scope.onLoaded();
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});
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for (var i in frameData) {
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var rect = frameData[i].frame;
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if (rect) {
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PIXI.TextureCache[i] = new PIXI.Texture(this.texture, {
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x: rect.x,
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y: rect.y,
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width: rect.w,
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height: rect.h
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});
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if (frameData[i].trimmed) {
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//var realSize = frameData[i].spriteSourceSize;
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PIXI.TextureCache[i].realSize = frameData[i].spriteSourceSize;
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PIXI.TextureCache[i].trim.x = 0; // (realSize.x / rect.w)
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// calculate the offset!
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}
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}
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}
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image.load();
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}
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else if(this.json.bones)
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{
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// spine animation
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var spineJsonParser = new spine.SkeletonJson();
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var skeletonData = spineJsonParser.readSkeletonData(this.json);
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PIXI.AnimCache[this.url] = skeletonData;
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this.onLoaded();
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}
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else
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{
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this.onLoaded();
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}
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}
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else
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{
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this.onError();
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}
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}
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};
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/**
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* Invoke when json file loaded
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*
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* @method onLoaded
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* @private
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*/
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PIXI.JsonLoader.prototype.onLoaded = function () {
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this.loaded = true;
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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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/**
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* Invoke when error occured
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*
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* @method onError
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* @private
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*/
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PIXI.JsonLoader.prototype.onError = function () {
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this.dispatchEvent({
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type: "error",
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content: this
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});
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};
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</pre>
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