C# 统一编号向导返回按钮

我刚刚创建了一个数字游戏，巫婆可以猜出你在想什么数字，并将其作为TextMeshProUGUI元素显示在屏幕上。我想添加一个后退按钮，这样当您按下不正确的按钮时，TextMeshProUGUI元素将显示用户按下不正确按钮之前显示的值

脚本：

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

public class NumberWizard : MonoBehaviour {

[SerializeField] SceneLoader sceneLoader;
[SerializeField] int max;
[SerializeField] int min;
[SerializeField] TextMeshProUGUI guessText;

int guess;

// Use this for initialization
void Start ()
{
    StartGame();
}

void StartGame()
{
    NextGuess();
}

public void OnPressHigher()
{
    min = guess + 1;
    NextGuess();
}

public void OnPressLower()
{
    max = guess - 1;
    NextGuess();
}

void NextGuess()
{
    guess = Random.Range(min, max+1);
    guessText.text = guess.ToString();
}

public void Back()
{
    //Back code should go here
}
}

---

你只需记住最后一个猜测：

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

public class NumberWizard : MonoBehaviour {

[SerializeField] SceneLoader sceneLoader;
[SerializeField] int max;
[SerializeField] int min;
[SerializeField] TextMeshProUGUI guessText;

int guess;
int lastGuess;
int lastMin;
int lastMax;

// Use this for initialization
void Start ()
{
    StartGame();
}

void StartGame()
{
    NextGuess();
}

public void OnPressHigher()
{
    lastMin = min;

    min = guess + 1;
    NextGuess();
}

public void OnPressLower()
{
    lastMax = max;

    max = guess - 1;
    NextGuess();
}

void NextGuess()
{
    lastGuess = guess;

    guess = Random.Range(min, max+1);
    guessText.text = guess.ToString();
}

public void Back()
{
    guess = lastGuess;
    min = lastMin;
    max = lastMax;

    guessText.text = guess.ToString();
}
}

---

如果这不是您想要的，请写一条评论，我将编辑答案

我尝试过，但出于某种原因，当我单击“更高”、“更高”、“后退”、“更低”等按钮时，它显示的数字会更高，但应该显示的数字会更低。