cc.Class({
    extends: cc.Component,

    properties: {
        // manifestUrl: cc.RawAsset,
        preloadProgress: cc.ProgressBar,
        preloadLabel: cc.Label,
        updateUI: cc.Node,
        _updating: false,           //是否正在更新
        _canRetry: false,           //能否重新获取更新
        _preloaded: false,          //是否已经预加载完资源
    },

    onLoad () {
    },
    
    init () {
        if(cc.sys.platform === cc.sys.WECHAT_GAME) {
            this.updateUI.active = true;

            let dis = 0.012
            this.timeCtrl = () => {
                if(parseInt(this.preloadProgress.progress) == 1) {
                    this._preloaded = true;
                    this.unschedule(this.timeCtrl)
                } else {
                    dis = dis < 0.002 ? 0.002 : dis - 0.0001;
                    this.preloadProgress.progress += dis
                }
                this.preloadLabel.string = '加载中，请稍候...' + (this.preloadProgress.progress * 100).toFixed(0) + '%'
            }
    
            this.schedule(this.timeCtrl, 0.03) 
        } else {
            this.updateUI.active = false;
        }
    },

    /**
     * 预加载结束
     */
    endPreload () {
        this.preloadProgress.progress = 1;
        this.scheduleOnce(() => {
            this.updateUI.active = false;
        }, 0.5)
    },

    onDestroy () {

    },

    start () {

    },

    // update (dt) {},
});