Unity Text值递增或递减效果

public class TextValueChange : MonoBehaviour
{
    [SerializeField]
    private Text text;
    [SerializeField]
    private float time = 0;//改变的总时间
    [SerializeField]
    private long count = 0;//改变总次数
    private bool isStart = false;
    private long endValue;//最终筹码
    private long currentValue;//当前筹码
    private long step;//改变的步长
    private float perTime;//多久变动一次
    private long changeCount;//当前改变的次数
    private bool isAdd = true;//是否增加
    public System.Action FinishChangeEvent;

    private void Start()
    {
        StartChange(1000, 100);
    }

    // Update is called once per frame
    void Update()
    {
        if (isStart)
        {
            if (perTime >= time / count)
            {
                perTime = 0;
                changeCount++;
                //增加
                if (isAdd)
                {
                    currentValue += step;
                    //大于等于目标，结束改变
                    if (currentValue >= endValue)
                    {
                        currentValue = endValue;
                        isStart = false;
                        Finish();
                        changeCount = 0;
                    }
                }
                else
                {
                    currentValue -= step;
                    //小于等于目标，结束改变
                    if (currentValue <= endValue)
                    {
                        currentValue = endValue;
                        isStart = false;
                        Finish();
                        changeCount = 0;
                    }
                }

                //改变次数达到总次数，结束改变
                if (changeCount >= count)
                {
                    currentValue = endValue;
                    isStart = false;
                    Finish();
                    changeCount = 0;
                }
                SetTextValue(currentValue);
            }
            else
            {
                perTime += Time.deltaTime;
            }
        }
    }

    private void SetTextValue(long value)
    {
        text.text = value.ToString();
    }

    //设置最终值
    public void SetEndValue(long value)
    {
        endValue = value;
    }

    //设置起始和结束值，start>end增加，start>end减小
    public void StartChange(long start, long end)
    {
        //获取当前值
        currentValue = start;
        endValue = end;

        long valueLen = 0;//改变的差值
        if (currentValue > endValue)
        {
            valueLen = currentValue - endValue;
            isAdd = false;
        }
        else if (currentValue < endValue)
        {
            valueLen = endValue - currentValue;
            isAdd = true;
        }
        else
        {
            SetTextValue(end);
        }
        long temp;
        if (count <= changeCount)
        {
            temp = valueLen;
        }
        else
        {
            temp = valueLen / (count - changeCount);
        }
        if (temp == 0)
        {
            temp = 1;
        }
        step = temp;
        isStart = true;
    }

    public bool GetState()
    {
        return isStart;
    }

    void Finish()
    {
        FinishChangeEvent?.Invoke();
    }

    private void OnDestroy()
    {
        FinishChangeEvent = null;
    }
}

把脚本挂到组件上，设置改变时间和次数，调用StartChange方法，设置起始值和结束值。