powerfun-unity/Assets/HomeMessageController.cs

using DG.Tweening;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class HomeMessageController : MonoBehaviour
{
    // Start is called before the first frame update
    float startX;
    private void Awake()
    {
        startX = transform.Find("TextContainer/Content").localPosition.x;
    }
    void Start()
    {
        
    }
    float timer = 2;
    public float? textWidth = null;
    private bool isAnimated = false;
    public void Initial()
    {
        transform.Find("TextContainer/Content").localPosition = new Vector2(startX, transform.Find("TextContainer/Content").localPosition.y);
        isAnimated = false;
    }
    float playtime = 0;
    // Update is called once per frame
    void Update()
    {
        timer -= Time.deltaTime;
        if (timer <= 0) 
        {
            //do
            if (textWidth.HasValue && textWidth > 180 && !isAnimated)
            {
                isAnimated = true;
                var offset = textWidth.Value - 180;
                var game = transform.Find("TextContainer/Content");
                var v = 20 / 0.3f;
                playtime = offset / v;
                //匀速播放
                game.DOLocalMoveX(startX - offset, playtime).onComplete
                    = () => Invoke("returnAni", 1.5f);
            }
            timer += 3;
        }
    }
    void returnAni() 
    {
        transform.Find("TextContainer/Content").DOLocalMoveX(startX, playtime);
    }
}