【cocos 3.x】简单飘字toast

typescript实现简单的飘字提示，使用数组做对象池回收

出现》上漂》屏幕中间停留一秒展示》缩小上漂消失

    /**飘字提醒对象池*/
    private static toastPools: Array = [];
    /**显示飘字提醒*/
    public static toast(str: string) {
        let toastNode = this.toastPools.shift();
        if (!toastNode) {
            //屏幕节点
            const Canvas = find("Canvas");
            const CanvasSize = Canvas.getComponent(UITransform).contentSize;

            //飘字节点
            toastNode = new Node();
            toastNode.layer = Layers.Enum.UI_2D;
            toastNode.parent = Canvas;
            //飘字背景半透明
            const g = toastNode.addComponent(Graphics);
            g.rect(CanvasSize.width / -4, -200 / 2, 600, 60);
            g.fillColor = new Color(0, 0, 0, 150);//填充
            g.stroke();
            g.fill();

            //飘字背文本
            const txtNode = new Node("txt");
            txtNode.layer = Layers.Enum.UI_2D;
            txtNode.parent = toastNode;
            txtNode.addComponent(Label);
            txtNode.setPosition(0, -70);
        }

        toastNode.getChildByName("txt").getComponent(Label).string = str;
        toastNode.setPosition(0, -200, 0);
        toastNode.setScale(1, 1, 1);

        tween(toastNode)
            .to(0.5, { position: new Vec3(0, 200, 0) })
            .delay(1)
            .to(0.2, { position: new Vec3(0, 300, 0), scale: new Vec3(0, 0, 0) })
            .call(() => {
                this.toastPools.push(toastNode);
            })
            .start()
    }