window.DownloadManager = cc.Class({
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ctor: function() {
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this._spinesCache = [];
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},
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checkAnimaCache: function() {
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return
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cc.sys.localStorage.removeItem("sszg_anima_cache_1");
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var cache_info = cc.sys.localStorage.getItem("sszg_anima_cache_1");
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if (cache_info) {
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cache_info = JSON.parse(cache_info);
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if (cache_info.status != "finish") {
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var finish_num = parseInt(cache_info.status);
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if (typeof finish_num == "number" && finish_num > 0 && finish_num < CacheAnimas.length) {
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for (var anima_i = finish_num + 1; anima_i < CacheAnimas.length - 1; anima_i ++) {
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this.downloadSpine(CacheAnimas[anima_i], anima_i);
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}
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}
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}
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} else {
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for (var anima_i in CacheAnimas) {
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this.downloadSpine(CacheAnimas[anima_i], anima_i);
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}
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}
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},
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downloadSpine: function(spine_id, index) {
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var spine_info = {spine_id: spine_id, index: index};
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this._spinesCache.push(spine_info);
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if (this._spinesCache.length > 0 && !this._downTimer) {
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this._downTimer = gcore.Timer.set(this.preDownLoad.bind(this), 500, -1);
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}
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},
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preDownLoad: function() {
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var load_status = cc.loader.getDownLoadStatus();
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if (!load_status) { // 主队列没有下载任务
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var spine_info = this._spinesCache.shift();
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if (spine_info.index) {
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var status = spine_info.index;
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if (spine_info.index >= CacheAnimas.length - 1) {
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status = "finish"
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}
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cc.sys.localStorage.setItem("sszg_anima_cache_1", JSON.stringify({status: status}));
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}
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this.doDownloadSpine(spine_info.spine_id);
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if (this._spinesCache.length <= 0 && this._downTimer) {
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gcore.Timer.del(this._downTimer);
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this._downTimer = null;
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}
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}
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},
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doDownloadSpine: function(spine_id) {
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if (!spine_id)
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return
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var spine_path = "spine/" + spine_id + "/";
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// spien文件
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var spine_uuids = cc.loader.getDirUuids(spine_path, sp.SkeletonData);
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cc.log(spine_uuids);
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// for (var spine_i in spine_uuids) {
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// var spine_url = cc.loader.getUrlWithUuid(spine_uuids[spine_i]);
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// this.downloadText(spine_url);
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// }
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// // 图片和纹理
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// var img_uuids = cc.loader.getDirUuids(spine_path, cc.Texture2D);
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// for (var img_i in img_uuids) {
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// var texture_url = cc.loader.getUrlWithUuid(img_uuids[img_i]);
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// var img_url = texture_url.replace(".json", ".png");
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// this.downloadText(texture_url);
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// this.downloadImage(img_url);
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// }
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},
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downloadText: function (url, callback) {
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var xhr = cc.loader.getXMLHttpRequest(),
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// var xhr = new ActiveXObject("MSXML2.XMLHTTP");
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errInfo = 'Load text file failed: ' + url;
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xhr.open('GET', url, true);
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if (xhr.overrideMimeType) xhr.overrideMimeType('text\/plain; charset=utf-8');
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xhr.onload = function () {
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if (xhr.readyState === 4) {
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if (xhr.status === 200 || xhr.status === 0) {
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callback && callback(null, xhr.responseText);
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}
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else {
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callback && callback({status:xhr.status, errorMessage:errInfo + '(wrong status)'});
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}
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}
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else {
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callback && callback({status:xhr.status, errorMessage:errInfo + '(wrong readyState)'});
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}
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};
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xhr.onerror = function(){
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callback && callback({status:xhr.status, errorMessage:errInfo + '(error)'});
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};
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xhr.ontimeout = function(){
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callback && callback({status:xhr.status, errorMessage:errInfo + '(time out)'});
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};
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xhr.send(null);
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},
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downloadImage: function(url, callback, isCrossOrigin) {
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if (!url) return;
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if (isCrossOrigin === undefined)
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isCrossOrigin = true;
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var img = new Image();
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if (isCrossOrigin && window.location.protocol !== 'file:') {
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img.crossOrigin = 'anonymous';
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} else {
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img.crossOrigin = null;
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}
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if (img.complete && img.naturalWidth > 0 && img.src === url) {
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return img;
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} else {
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var loadCallback = function loadCallback() {
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img.removeEventListener('load', loadCallback);
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img.removeEventListener('error', errorCallback);
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};
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var errorCallback = function errorCallback() {
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img.removeEventListener('load', loadCallback);
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img.removeEventListener('error', errorCallback);
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};
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img.addEventListener('load', loadCallback);
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img.addEventListener('error', errorCallback);
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img.src = url;
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}
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},
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})
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DownloadManager.getInstance = function () {
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if (!DownloadManager.instance) {
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DownloadManager.instance = new DownloadManager();
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}
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return DownloadManager.instance;
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}
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module.exports = DownloadManager;
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