game_cocos_2c/assets/scripts/modules/lobby/ui/LoadingView.ts

import { UIViewID } from '@scripts/define/UIDefine';
import { UICloseReason } from '@scripts/framework/ui/UILayer';
import { UIView } from '@scripts/framework/ui/UIView';
import { _decorator, Component, Node, Tween, tween, UIOpacity } from 'cc';
const { ccclass, property } = _decorator;

@ccclass('LoadingView')
export class LoadingView extends UIView {
    readonly viewId = UIViewID.LoadingView;

    @property(UIOpacity)
    uiOpacity: UIOpacity;

    @property(Node)
    circleNode: Node = null;

    protected onOpen({ delay }): void | Promise<void> {
        Tween.stopAllByTarget(this.circleNode);
        tween(this.circleNode).by(0.5, { angle: -200 }).repeatForever().start();

        Tween.stopAllByTarget(this.uiOpacity);
        this.uiOpacity.opacity = delay > 0 ? 0 : 255;
        if (delay > 0) {
            tween(this.uiOpacity).to(0.2, { opacity: 255 }).delay(delay).start();
        }
    }

    protected onClose(_reason: UICloseReason): void | Promise<void> {
        Tween.stopAllByTarget(this.circleNode);
        Tween.stopAllByTarget(this.uiOpacity);
    }
}