tv_xiaoyouxi/games/jssjm/egret_loader.js

/**
 * Copyright (c) 2014,Egret-Labs.org
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Egret-Labs.org nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGRET-LABS.ORG AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL EGRET-LABS.ORG AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

egret_h5 = {};

egret_h5.prefix = "";

egret_h5.loadScript = function (list, callback) {
    var loaded = 0;
    var loadNext = function () {
        egret_h5.loadSingleScript(egret_h5.prefix + list[loaded], function () {
            loaded++;
            if (loaded >= list.length) {
                callback();
            }
            else {
                loadNext();
            }
        })
    };
    loadNext();
}

egret_h5.loadSingleScript = function (src, callback) {
    var s = document.createElement('script');
    if (s.hasOwnProperty("async")) {
        s.async = false;
    }
    s.src = src;
    s.addEventListener('load', function () {
        this.removeEventListener('load', arguments.callee, false);
        callback();
    }, false);
    document.body.appendChild(s);
}

egret_h5.startGame = function () {
    var canvas = document.getElementById(egret.StageDelegate.canvas_name);
    context = egret.MainContext.instance;
    context.rendererContext = new egret.HTML5CanvasRenderer(canvas);
    context.touchContext = new egret.HTML5TouchContext(canvas);
    context.deviceContext = new egret.HTML5DeviceContext(30);
    context.netContext = new egret.HTML5NetContext();


    //设置屏幕适配策略
    var container = new egret.EqualToFrame();
    var content = egret.Browser.getInstance().isMobile ? new egret.FixedWidth() : new egret.NoScale();
    var policy = new egret.ResolutionPolicy(container, content);
    egret.StageDelegate.getInstance().setDesignSize(480, 800, policy);

    context.stage = new egret.Stage(canvas.width, canvas.height);

    egret.MainContext.instance.rendererContext.texture_scale_factor = 1;
    context.run();

    var rootClass;
    if(document_class){
        rootClass = egret.getDefinitionByName(document_class);
    }
    if(rootClass) {
        var rootContainer = new rootClass();
        if(rootContainer instanceof egret.DisplayObjectContainer){
            context.stage.addChild(rootContainer);
        }
        else{
            throw new Error("文档类必须是egret.DisplayObjectContainer的子类!");
        }
    }
    else{
        throw new Error("找不到文档类！");
    }
}

egret_h5.preloadScript = function (list, prefix) {
    if (!egret_h5.preloadList) {
        egret_h5.preloadList = [];
    }
    egret_h5.preloadList = egret_h5.preloadList.concat(list.map(function (item) {
        return prefix + item;
    }))
}

egret_h5.startLoading = function () {
    var list = egret_h5.preloadList;
    egret_h5.loadScript(list, egret_h5.startGame);
}