Question

void Update()
{
    bool playerInView = false;

    foreach (RaycastHit hit in eyes.hits)
    {
        if (hit.transform && hit.transform.tag == "Player")
        {
            playerInView = true;
        }
    }

    if (playerInView)
    {
        print ("Detected");
    }
    else
    {
        void OnGUI () {
            GUI.Box (new Rect (10, 10, 100, 90), "Loader Menu");
        }
    }
}

}

当我在Unity中运行时，它表示void不能在此上下文中使用但当我删除功能，只是调用打印然后它工作

Answer 1

部分

else
{
    void OnGUI () {
        GUI.Box (new Rect (10, 10, 100, 90), "Loader Menu");
    }
}

是无效的C＃语法;函数不能以这种方式在本地定义。也许你的意思是

else
{
    GUI.Box(new Rect (10, 10, 100, 90), "Loader Menu");
}

Answer 2

尝试：

if (playerInView)
{
    print ("Detected");
}
else
{
    GUI.Box (new Rect (10, 10, 100, 90), "Loader Menu");
}

Answer 3

以这种方式做到：

bool playerInView = false;

void Update()
{
    playerInView = false;
    foreach (RaycastHit hit in eyes.hits)
    {
        if (hit.transform && hit.transform.tag == "Player")
        {
            playerInView = true;
        }
    }

    if (playerInView)
    {
        print ("Detected");
    }
}




void OnGUI()
{
    if (!playerInView)
    {
        GUI.Box (new Rect (10, 10, 100, 90), "Loader Menu");
    }
    ...
}

Answer 4

首先，尝试在可理解的上下文中写下您的问题。无论如何，你应该写它，

void Update()
    {
        bool playerInView = false;

        foreach (RaycastHit hit in eyes.hits)
        {
            if (hit.transform && hit.transform.tag == "Player")
            {
                playerInView = true;
            }
        }

        if (playerInView)
        {
            print("Detected");
        }
        else
        {
            OnGUI();
        }
    }
    void OnGUI()
    {
        GUI.Box(new Rect(10, 10, 100, 90), "Loader Menu");
    }

如果If语句失败，我可以调用函数吗？

4 个答案: