TDGameClient3D/assets/scripts/games/scenes/PreloadingScene.ts

import { _decorator, Component, Node, game, find, loader, JsonAsset } from 'cc';
import { LayerManager } from '../../engines/gui/LayerManager';
import { UIConst } from '../ui/UIConst';
import { LoadingView } from '../../engines/loadingView/LoadingView';
import { SceneManager } from '../../engines/scenes/SceneManager';
import { GameModel } from '../models/GameModel';
import GameConfigManager from '../models/GameConfigManager';
const { ccclass, property } = _decorator;

@ccclass('PreloadingScene')
export class PreloadingScene extends Component {
    /* class member could be defined like this */
    // dummy = '';

    /* use `property` decorator if your want the member to be serializable */
    // @property
    // serializableDummy = 0;

    onLoad(){
        console.log("进入Preloading场景");
    }

    start () {
        let canvas:Node=find("Canvas");

        game.addPersistRootNode(canvas);
        
        //UI全局节点
        let uiRoot:Node=canvas.getChildByName("UIRoot");
        let layerRoot:Node=uiRoot.getChildByName("LayerRoot");
        
        
        
        LayerManager.single.Init(layerRoot);
        UIConst.RegisterGUI();
        this.LoadConfigs();
    }

    LoadConfigs():void{
        loader.loadResDir("configs",JsonAsset,this.onConfigLoadProgress.bind(this),this.onConfigLoadComplete.bind(this));
    }

    onConfigLoadProgress(index:number,total:number):void{
        LoadingView.single.UpdateProgress(index/total);
    }

    onConfigLoadComplete(error,asset):void{
        if(error!=null){
            throw new Error("加载配置出错！");
        }
        GameConfigManager.Init(asset);
        SceneManager.single.Swicth("PrepareScene");
    }
    
    //假进度条
    private time:number=0;
    update (deltaTime: number) {
        this.time+=deltaTime;
        this.time=this.time%2;
        LoadingView.single.UpdateProgress(this.time/2);
    }
}