问题

I have a Unity problem where I am trying to play sound when addScore() function starts using dingSFX.Play();, but instead I get the following error:
ArgumentNullException: Value cannot be null.

我在Unity中遇到问题，我尝试在addScore()函数开始时播放声音，使用dingSFX.Play();，但我却收到以下错误消息：ArgumentNullException: 值不能为null。

I am using Audio Source component that I added into my Inspector tab where also my script(LogicScript.cs) is. I also added the AudioClip into Audio Source.

我正在使用添加到我的Inspector选项卡中的Audio Source组件，我的脚本(LogicScript.cs)也在那里。我还将AudioClip添加到了Audio Source中。

LogicScript.cs

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // this does not work


    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
}

LogicScript.cs

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // 这部分不起作用


    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
}

LogicScript.cs

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // これは機能しません


    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
}

LogicScript.cs

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // これは機能しません


    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
}

LogicScript.cs

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // これは機能しません


    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
}

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

public class LogicScript : MonoBehaviour
{

    public int playerScore;
    public Text scoreText;
    public GameObject gameOverScreen;
    public AudioSource dingSFX;


    
    [ContextMenu("Increase Score")]
    public void addScore(int scoreToAdd)
    {
        playerScore = playerScore + scoreToAdd;
        scoreText.text = playerScore.ToString();

        dingSFX.Play();    // this does not work

      
    }

    public void restartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void gameOver()
    {
        gameOverScreen.SetActive(true);
    }
} 

答案1

得分: 0

将音频源分配给音频源，而不是将音频剪辑分配给音频源。

创建一个空的游戏对象，随便取名，为其添加一个音频源组件，将剪辑拖放到音频源的剪辑字段中，然后将包含音频源的游戏对象拖放到脚本中的dingSFX上。

答案2

得分: 0

The script itself has no error. The only reason why this doesn't work is because you didn't assign your audio source to your script in the inspector. Which means that your script couldn't find an audio source.
Check out this video for an example.

Since you've mentioned that the script and the audio source are both on the same gameObject, you can try:

void Start()
{
    dingSFX = GetComponent<AudioSource>();
}

This way you get reference via script so you won't forget to assign it in the inspector. Hope this helps!

void Start()
{
    dingSFX = GetComponent<AudioSource>();
}