using UnityEngine;
using UnityEngine.UI;
using DG.Tweening;
using System;
public class Message : MonoBehaviour
{
    public float dropDuration = 0.5f; // 掉落持续时间
    public float persisterDuration = 1f; // 持续显示时间
    public float dorpHeight;

    public static Message instance;

    Vector3 originPosition;
    Image image;
    Text messgaeText;

    private void Awake()
    {
        if(instance == null )
        {
            instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }
    void Start()
    {
         originPosition=transform.position;
         image = transform.GetComponent<Image>();
         messgaeText = transform.GetComponentInChildren<Text>();
    }
    public void ShowMessgae(string message,Action action=null)
    {
        Original();
        Sequence s = DOTween.Sequence();
        s.AppendCallback(() => messgaeText.text =message);
        s.Append(transform.DOLocalMoveY(dorpHeight, dropDuration,true).SetEase(Ease.OutCubic));
        //延迟调用函数
        s.Append(DOVirtual.DelayedCall(persisterDuration, Hide));
        s.AppendCallback(()=>action?.Invoke());
    }
    void Hide()
    {
        image.DOFade(0f, 0.5f).SetEase(Ease.OutCubic);
        messgaeText.DOFade(0f, 0.5f).SetEase(Ease.OutCubic);
    }
    void Original()
    {
        Debug.Log("恢复原样");

        transform.position = originPosition;

        image.DOFade(1, 0.1f).SetEase(Ease.OutCubic);
        messgaeText.DOFade(1, 0.1f).SetEase(Ease.OutCubic);

    }
}

消息提示框放在屏幕外