unity实现消息弹窗

此弹窗效果为弹出消息，自动消失，用DOTween实现

using System.Collections;
using System.Collections.Concurrent;
using DG.Tweening;
using TMPro;
using UnityEngine;

public class PopModel
{
    public bool isPop;
    public string tips;
    public float time;
}
public class PopUpManager : MonoBehaviour
{
    [SerializeField] private TMP_Text content;
    [SerializeField] private Transform tip;
    [SerializeField,Header("弹出过程所需时间")] private float upTime = 0.8f;
    [SerializeField,Header("隐藏过程所需时间")] private float hideTime = 0.5f;

    #region singleton

    private static PopUpManager _instance;

    public static PopUpManager Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<PopUpManager>();
            }
            if (_instance == null)
            {
                var popManager = new GameObject("PopManager");
                _instance = popManager.AddComponent<PopUpManager>();
                DontDestroyOnLoad(popManager);
            }
            return _instance;
        }
    }

    #endregion
    private CanvasGroup tipCG;
    private Coroutine _popCoroutine;
    private readonly ConcurrentQueue<PopModel> _popQueue = new();
    private bool _isPoping;

    private void Awake()
    {
        _instance = this;
        DontDestroyOnLoad(this);
    }

    private void Start()
    {
        tip.localScale = Vector3.zero;
        tipCG = tip.GetComponent<CanvasGroup>();
        tipCG.alpha = 0;
        tip.gameObject.SetActive(false);
    }

    public void ShowTip(string tips,float time = 1f)
    {
        var popModel = new PopModel()
        {
            isPop = false,
            tips = tips,
            time = time,
        };
        AddTips(popModel);
    }

    private void AddTips(PopModel model)
    {
        _popQueue.Enqueue(model);
        PopTips();
    }

    private void PopTips()
    {
        _popCoroutine ??= StartCoroutine(PopQueue());
    }

    IEnumerator PopQueue()
    {
        while (_popQueue.Count > 0)
        {
            _popQueue.TryPeek(out var popModel);
            if (popModel.isPop)
            {
                _popQueue.TryDequeue(out var finishPopModel);
            }
            else
            {
                PopingTips(popModel);
            }

            yield return null;
        }
        _popCoroutine = null;
    }

    private void PopingTips(PopModel model)
    {
        if (!_isPoping)
        {
            _isPoping = true;
            content.text = model.tips;
            tip.gameObject.SetActive(true);
            Show(model);
        }
    }

    private void Show(PopModel model)
    {
        tipCG.DOFade(1, upTime)
            .OnUpdate(() => { tip.localScale = Vector3.Lerp(Vector3.zero, Vector3.one, tipCG.alpha); })
            .OnComplete(() => { Delay(model); });
    }

    private void Delay(PopModel model)
    {
        DOVirtual.DelayedCall(model.time, () =>
        {
            tipCG.DOFade(0, hideTime)
                .OnUpdate(() => {tip.localScale = Vector3.Lerp(Vector3.one, Vector3.zero, 1 - tipCG.alpha);})
                .OnComplete(() => { Hidden(model); });
        });
    }

    private void Hidden(PopModel model)
    {
        tip.gameObject.SetActive(false);
        _isPoping = false;
        model.isPop = true;
    }
}

第二种，弹出多个，然后逐一消失（可自行用对象池优化）

using System.Collections;
using System.Collections.Concurrent;
using DG.Tweening;
using TMPro;
using UnityEngine;

public class PopModel
{
    public string content;
    public float time;
}
public class PopUpManager : MonoBehaviour
{
    [SerializeField] private Transform tips;
    [SerializeField] private GameObject tip;
    [SerializeField,Header("弹出过程所需时间")] private float upTime = 0.1f;
    [SerializeField,Header("隐藏过程所需时间")] private float hideTime = 0.1f;

    #region singleton

    private static PopUpManager _instance;

    public static PopUpManager Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<PopUpManager>();
            }
            if (_instance == null)
            {
                var popManager = new GameObject("PopManager");
                _instance = popManager.AddComponent<PopUpManager>();
                DontDestroyOnLoad(popManager);
            }
            return _instance;
        }
    }

    #endregion
    
    private Coroutine _popCoroutine;
    private readonly ConcurrentQueue<PopModel> _popQueue = new();

    private void Awake()
    {
        _instance = this;
        DontDestroyOnLoad(this);
    }

    private void Start()
    {
        tip.gameObject.SetActive(false);
    }

    public void ShowTip(string content,float time = 0.5f)
    {
        var popModel = new PopModel()
        {
            content = content,
            time = time,
        };
        AddTips(popModel);
    }

    private void AddTips(PopModel model)
    {
        _popQueue.Enqueue(model);
        PopTips();
    }

    private void PopTips()
    {
        _popCoroutine ??= StartCoroutine(PopQueue());
    }

    IEnumerator PopQueue()
    {
        while (_popQueue.Count > 0)
        {
            _popQueue.TryDequeue(out var finishPopModel);
            PopingTips(finishPopModel);
            yield return null;
        }
        _popCoroutine = null;
    }

    private void PopingTips(PopModel model)
    {
        GameObject go = Instantiate(tip, tips);
        go.gameObject.SetActive(true);
        go.transform.GetChild(0).GetComponent<TextMeshProUGUI>().text = model.content;
        CanvasGroup cg = go.GetComponent<CanvasGroup>();
        Show(model,cg,go.transform);
    }

    private void Show(PopModel model,CanvasGroup tipCG,Transform tipTrans)
    {
        tipCG.DOFade(1, upTime)
            .OnUpdate(() => { tipTrans.localScale = Vector3.Lerp(Vector3.zero, Vector3.one, tipCG.alpha); })
            .OnComplete(() => { Delay(model, tipCG, tipTrans); });
    }

    private void Delay(PopModel model,CanvasGroup tipCG,Transform tipTrans)
    {
        DOVirtual.DelayedCall(model.time, () =>
        {
            tipCG.DOFade(0, hideTime)
                .OnUpdate(() => {tipTrans.localScale = Vector3.Lerp(Vector3.one, Vector3.zero, 1 - tipCG.alpha);})
                .OnComplete(() => { Hidden(tipTrans); });
        });
    }

    private void Hidden(Transform tipTrans)
    {
        Destroy(tipTrans.gameObject);
    }
}