如何存储 DateTime 数据并在以后计算？统一 C#

Question

我是初学者，我正在尝试用一朵花制作类似经典电子鸡游戏的东西，您需要每天给它浇水一次。我使用“浇花”按钮作为主要功能。为此，我需要知道最后一次点击是什么时候，以便与当前时间进行比较。

我很努力地尝试使用 PlayerPrefs 和 DateTime 方法，但问题来了 — DateTime 使用 long，而 PlayerPrefs 使用 int 或 strings。我找到了将 DateTime 转换为二进制然后再转换为字符串的解决方案，但是 Unity 告诉我这件事：

FormatException: Input string was not in a correct format. 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 value, System.Globalization.NumberStyles options, System.Globalization.NumberFormatInfo numfmt) (at <695d1cc93cca45069c528c15c9fdd749>:0) System.Int64.Parse (System.String s, System.IFormatProvider provider) (at <695d1cc93cca45069c528c15c9fdd749>:0) System.Convert.ToInt64 (System.String value) (at <695d1cc93cca45069c528c15c9fdd749>:0) HealthScript.Update () (at Assets/Scripts/HealthScript.cs:42)

完整代码如下：

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);
    }
}

现在，我只是想解决这个问题，然后再做其他事情。您能否建议控制台日志的解决方案，或者更好的方法来实现我的目标？

Answer 1

如果要登录到控制台，命令为Debug.Log、Debug.LogWarning或Debug.LogError。

您还需要确保将控制台过滤器设置为显示您要打印的内容：

Answer 2

如果您更改存储和检索 DateTime 的方式，您的其余逻辑应该没问题。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);
    }
}

如何存储 DateTime 数据并在以后计算？统一 C#

How to store DateTime data and calculate it later? Unity C#

c#

unity3d