如果声明不工作Unity C#

Question

编辑:是的,我最近在python中编码,iv混合了两种语言之间的语法.感谢您的改进提示.

我的目标是让if语句工作并输出相应的normal,medium和hard.尽管GameDifficulty设置为2,但它输出的是硬而不是中等.我注意到它只输出最后一个if语句位.它真的很奇怪.

我将GameDifficulty定义为2.当我运行脚本时,Text11变为"硬"而不是"中".我不知道为什么会这样.

谢谢

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

public class DifficultyDisplayOnWinScreen : MonoBehaviour {
    public int GameDifficulty;
    public GameObject Text11;
    public string diffi;
    void Start () 
    {

        //GameDifficulty = DifficultyChooser.DifficultyNumber;
        GameDifficulty = 2;

    }

    void Update () 
    {
        //GameDifficulty = DifficultyChooser.DifficultyNumber;
        if (GameDifficulty == 3);
        {
            Text11.GetComponent<Text> ().text = "Normal";
        }       
        if (GameDifficulty == 2);
        {
            Text11.GetComponent<Text> ().text = "Medium";
        }
        if (GameDifficulty == 1);
        {
            Text11.GetComponent<Text> ().text = "Hard";
        }

    }
}

Answer 1

删除;后面的条件if:

if (GameDifficulty == 3)
{
    Text11.GetComponent<Text>().text = "Normal";
}
if (GameDifficulty == 2)
{
    Text11.GetComponent<Text>().text = "Medium";
}
if (GameDifficulty == 1)
{
    Text11.GetComponent<Text>().text = "Hard";
}

说明:;结束if语句,使其成为空语句.这是因为ifC#中允许使用单行语句,并;确定它们的结束位置.

Answer 2

编辑:我甚至没有注意到;s,是的删除分号,它应该工作.

if (GameDifficulty == 3)
{
    Text11.GetComponent<Text>().text = "Normal";
}       
if (GameDifficulty == 2)
{
    Text11.GetComponent<Text>().text = "Medium";
}
if (GameDifficulty == 1) //if there is only 3 difficulties in this line you can use just else
{
    Text11.GetComponent<Text>().text = "Hard";
}

或者使用 if/else

if (GameDifficulty == 3)
{
    Text11.GetComponent<Text>().text = "Normal";
}       
else if (GameDifficulty == 2)
{
    Text11.GetComponent<Text>().text = "Medium";
}
else if (GameDifficulty == 1) //if there is only 3 difficulties in this line you can use just else
{
    Text11.GetComponent<Text>().text = "Hard";
}

在这种情况下更好地使用switch/case:

switch(GameDifficulty)
{
    case 1:
        Text11.GetComponent<Text>().text = "Hard";
        break;

    case 2:
        Text11.GetComponent<Text>().text = "Medium";
        break;

    case 3:
        Text11.GetComponent<Text>().text = "Normal";
        break;
}

或者你可以有一个困难字典,例如:

Dictionary<int, string> difficulties = new Dictionary<int, string>()
{
    {1, "Hard" },
    {2, "Medium" },
    {3, "Normal" }
};

并使用它像:

Text11.GetComponent<Text>().text = difficulties[GameDifficulty];

或者enum(有很多方法可以让它更具可读性和简单性,所以我将用这个结束我的例子)

enum Difficulties
{
    Hard = 1,
    Medium = 2,
    Normal = 3
}

用法:

Text11.GetComponent<Text>().text = ((Difficulties)GameDifficulty).ToString();