使用Invoke在另一个脚本上进行Unity调用的方法 [英] Unity calling method on another script using Invoke

问题描述

我有两个脚本，其中一个重新启动场景，另一个是倒计时计时器，而不是在第一个脚本中调用重新启动场景方法.但是，它没有重新启动，即使没有错误，我也不明白为什么.

I have two scripts, one of them restarts the scene and the other is a countdown timer than calls the restart scene method in the first script. However, it's not restarting and I don't understand why even though there are no errors.

第一个重新启动场景的脚本:

The first script that restarts the scene:

using UnityEngine;
using UnityEngine.SceneManagement;

public class LevelComplete : MonoBehaviour
{
    public void LoadNextLevel()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
    }

    public void Exit()
    {
        Application.Quit();
        Debug.Log("Exit");
    }

    public void Restart()
    {
        SceneManager.LoadScene(sceneBuildIndex: 1);
        Debug.Log("restart pressed");
    }
} 

倒数计时器结束后应该重新启动场景的第二个脚本:

The second script that's supposed to restart the scene after a countdown timer ends:

using UnityEngine;
using UnityEngine.UI;

public class TimerCounDown : MonoBehaviour {

    [SerializeField] private Text uiText;

    [SerializeField] private float MainTimer;

    private float timer;
    private string canCount;
    private bool doneOnece;
    public float restartDelay = 5f;
    private string methName;

    private void Update()
    {
        timer -= Time.deltaTime; 
        Debug.Log((MainTimer - (-timer)));

        if ((MainTimer - (-timer)) >0)
        {
            canCount = (MainTimer - (-timer)).ToString("F1") + " Seconds until end";
            uiText.text = canCount;
        }
        else
        {
            uiText.text = "level complete lefel will be restarted in 5 seconds";
            // GetComponent<LevelComplete>();
            // Invoke("Restart", restartDelay);
            // GetComponent<LevelComplete>().Restart();
        }
    }
}

我正在尝试使用Invoke重新启动它，但是它不能将GetComponent<LevelComplete>().Restart()作为参数，因此我决定只触发此方法，但它不起作用.我不明白为什么以及如何解决它.如果您知道问题出在哪里以及解决的方法，请帮助我.

I am trying to restart it with Invoke but it can't take GetComponent<LevelComplete>().Restart() as parameter so I decided to just simply fire this method and it doesn't work. I don't understand why and how to fix it. Please help me if you know where the problem is and the solution to it.

推荐答案

Invoke是属于MonoBehaviour实例的方法.

直接调用Invoke("Restart", restartDelay);时，运行时将尝试在TimerCountDown类中找到一个名为重新启动"的方法，因为该方法是您从中调用Invoke的位置，而该方法不存在.这解释了为什么什么也没发生.

When you call Invoke("Restart", restartDelay); directly, the runtime will try and find a method called "Restart" within the TimerCountDown class since its where you called Invoke from, which doesn't exist. This explains why nothing happens.

正确的方法是先引用LevelComplete实例，然后使用该实例来调用Invoke:

The correct way would be to first reference the LevelComplete instance and then using that to call Invoke:

LevelComplete levelComplete = GetComponent<LevelComplete>();
levelComplete.Invoke("Restart", restartDelay);

将在LevelComplete类中正确查找重新启动"方法.

Which will correctly look for the "Restart" method within the LevelComplete class.

这篇关于使用Invoke在另一个脚本上进行Unity调用的方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！