c# - 用户界面统一错误 : The requested operation caused a stack overflow

Question

所以我制作了这个测试 GUI，当敌人的聚光灯照到你时，它会显示游戏结束。但是当它发生时 Unity 崩溃并注意到错误

StackOverflowException: The requested operation caused a stack overflow. 

这是我崩溃的代码:

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


public class GameUI : MonoBehaviour {

    public GameObject gameLoseUI;
   // public GameObject playerDiedUI;
    //public GameObject noEnergyUI;
    bool gameIsOver;

    // Use this for initialization
    void Start () {
        Guard.OnGuardHasSpottedPlayer += ShowGameLoseUI;
    }

    // Update is called once per frame
    void Update () {
        /*if (gameIsOver)
        {if (Input.GetKeyDown(KeyCode.Space))
            {
                SceneManager.LoadScene(0);
            }
        }*/     
    }

    void ShowGameLoseUI()
    {
        OnGameOver(gameLoseUI);
    }

    void OnGameOver(GameObject gameoverUI)
    {
        gameLoseUI.SetActive(true);
        gameIsOver = true;
        Guard.OnGuardHasSpottedPlayer += ShowGameLoseUI;
    }
}

我认为错误可能在 void Update 中，但即使使用此注释片段，unity 仍会崩溃。我该如何解决这个问题？

Answer 1

正如评论中所指出的，您在 GameOver 时无限订阅 Guard.OnGuardHasSpottedPlayer，这会导致异常。

将+=改为-=

void OnGameOver(GameObject gameoverUI)
    {
        gameLoseUI.SetActive(true);
        gameIsOver = true;
        Guard.OnGuardHasSpottedPlayer -= ShowGameLoseUI;
    }