如何存储DateTime数据并在以后进行计算？单位C#

Question

我是个初学者，我试着用一朵花做一个经典的Tamagotchi游戏，你需要每天浇水一次。我使用“浇花”按钮作为主要功能。要做到这一点，我需要知道最后一次点击是什么时候与当前的时间进行比较。

我很努力地尝试使用PlayerPrefs和DateTime方法，但这里有一个问题--使用longs的DateTime，使用int或strings的PlayerPrefs。我找到了将DateTime转换为二进制文件的解决方案，然后将其转换为字符串，但是联合告诉我：

FormatException:输入字符串格式不正确。System.Number.StringToNumber (System.String str，System.Globalization.NumberStyles options，System.Number+NumberBuffer& number，System.Globalization.NumberFormatInfo info，System.Boolean parseDecimal) (at <695d1cc93cca45069c528c15c9fdd749>:0) System.Number.ParseInt64 (System.String值，System.Globalization.NumberStyles选项，System.Globalization.NumberFormatInfo numfmt) (at <695d1cc93cca45069c528c15c9fdd749>:0)系统。( System.IFormatProvider provider) (at <695d1cc93cca45069c528c15c9fdd749>:0) System.Convert.ToInt64 (System.String value) (at <695d1cc93cca45069c528c15c9fdd749>:0) HealthScript.Update () (at资产/脚本/HealthScript.cs:42)

以下是整个代码：

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class HealthScript : MonoBehaviour
{
    public int health = 100;
    public Slider slider;
    public int damage;
    public int waterTime;
    public bool isGoing = true;
    DateTime currentTime = DateTime.UtcNow;
    DateTime lastTimeClicked;

    //reseting the health every time button is clicked and saving the time of it
    public void buttonClicked()
    {
        health = 100;
        PlayerPrefs.SetString("Last Time Clicked", DateTime.UtcNow.ToBinary().ToString());
    }

    public void Update()
    {
        //connecting the health to the slider
        slider.value = health;
        //quit of the game
        if (Input.GetKey(KeyCode.Escape))
        {
            Application.Quit();
        }

        //calculating the difference between last click and actual time
        long temp = Convert.ToInt64(PlayerPrefs.GetString("Last Time Clicked"));
        lastTimeClicked = DateTime.FromBinary(temp);
        print("LastTimeClicked" + lastTimeClicked);

        TimeSpan difference = currentTime.Subtract(lastTimeClicked);
        print("Difference: " + difference);
    }
}

就目前而言，我只是试图解决这个问题，以更好地解决其他问题。请您提出控制台日志的解决方案，或者更好地实现我的目标？

Answer 1

如果您改变了存储和检索DateTime的方式，那么您的逻辑的其余部分应该是可以的。试试这个：

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class HealthScript : MonoBehaviour
{
    public int health = 100;
    public Slider slider;
    public int damage;
    public int waterTime;
    public bool isGoing = true;
    DateTime currentTime = DateTime.UtcNow;
    DateTime lastTimeClicked;

    //reseting the health every time button is clicked and saving the time of it
    public void buttonClicked()
    {
        health = 100;
        PlayerPrefs.SetString("Last Time Clicked", DateTime.UtcNow.ToString()); // you can add a formatter here if you want
    }

    public void Update()
    {
        //connecting the health to the slider
        slider.value = health;
        //quit of the game
        if (Input.GetKey(KeyCode.Escape))
        {
            Application.Quit();
        }

        //calculating the difference between last click and actual time
        lastTimeClicked = DateTime.Parse(PlayerPrefs.GetString("Last Time Clicked"));
        print("LastTimeClicked" + lastTimeClicked);

        TimeSpan difference = currentTime.Subtract(lastTimeClicked);
        print("Difference: " + difference);
    }
}

Answer 2

如果您想登录到控制台，命令是Debug.Log、Debug.LogWarning或Debug.LogError。

您还需要确保将控制台筛选器设置为显示要打印的内容：

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