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如何持续检查游戏对象是否会在unity的层次结构中实例化?

instantiation unity3d c#

zyonneo · 技术社区 · 7 年前

我想继续检查一个游戏对象是否会被实例化。我所拥有的只是游戏对象的名称,比如“Model”。如果模型在层次结构中处于活动状态,我想做些什么。问题是最初游戏对象不可用。后来只会被实例化。如何检查名为的游戏对象是否存在于层次结构中,而层次结构将是一个克隆。

if(gameobject.name=="Model(Clone)") { //Do something }

这将返回一个空值

4 回复 | 直到 7 年前

Noblight 7 年前

初始化变量模型


    Gameobject Model;

if (Model != null && Model.name == "Model(Clone)"){//return false
    //Do Something
}

用名称实例化游戏对象。


    Gameobject Model = Instantiate (somePrefab);

if

需要放在里面


    void update()

,或者像这样的循环


    invoke()

当游戏对象模型不为空并且有名为Model(Clone)的游戏对象时,它将检查if并返回true

if (Model != null && Model.name == "Model(Clone)"){//return true
    //Do Something
}

Daveloper 7 年前

if(gameobject!=null && gameobject.name=="Model(Clone)")
{
    //Do something
}

如果你不能访问这个游戏对象,而你只是想检测它是否存在,那么可以尝试以下方法

var go = GameObject.Find("Model(Clone)");
if(go!=null)
{
    //Do something
}

var gos = GameObject.FindObjectsOfType<MyScript>();
if(gos!=null && gos.Length > 0)
{
    // foreach(var go in gos) {}
    //Do something
}

Alox 7 年前

如果是我,我会这样做。

List<GameObject> models = new List<GameObject>;
public GameObject baseModel; //Your model

private void CreateModel()
{
   GameObject obj = GameObject.Instantiate(baseModel) as GameObject;
   models.Add(obj);
}

void Update()
{
   if(models.Count > 0)
   {
       //Do Something
   }
}

记住,如果你要摧毁这个物体,别忘了这样做。

private void DestroyModel(GameObject obj)
{
   models.Remove(obj);
   Destroy(obj);
}

这是一个很好的实践,以分配您的游戏对象的地方。英雄联盟

Devwulf 7 年前

Instantiate 一个物体,你可以 Invoke

您首先需要编写 Instantiates Invokes 紧接着的UnityEvent(顺便说一句,整个事件都在一个.cs文件中):

public class GameObjectSpawner : MonoBehaviour 
{
    public GameObject GameObjectPrefab;
    public GameObjectEvent OnCreateObject;

    private void Update() 
    {
        // Everytime you click your left mouse button
        // Only runs once per mouse click
        if (Input.GetMouseButtonDown(0)) 
        {
            // Instantiate the gameobject...
            GameObject go = Instantiate(GameObjectPrefab);

            // Then immediately Invoke our event to run all the listeners
            // and passing our gameobject to them.
            OnCreateObject.Invoke(go);
        }
    }
}

// This is just so the code that 'listens' to the event can get access to the 
// gameobject that just got instantiated.
public class GameObjectEvent : UnityEvent<GameObject> { }

因此,如果你的项目中有一个代码需要在游戏对象运行时运行 Instantiated ,该代码仅在实例化游戏对象时运行,以前从未运行过(除非手动运行该代码)。将该代码注册为 OnCreateObject

public GameObjectSpawner Spawner;

private void Start()
{
    // You can place this anywhere you want to, but we're
    // placing this here in Start just to make sure that
    // we're already listening waaay before the gameobject
    // is instantiated.
    Spawner.AddListener(CheckHierarchy)
}

// It doesn't matter if this is public or private,
// as long as it's void and takes in a GameObject as a parameter.
private void CheckHierarchy(GameObject go)
{
    // Now we can do all kinds of things to the newly instantiated
    // gameobject, like check if it's active in the hierarchy!
    if (go.activeInHierarchy == true)
    {
        Debug.Log("I LIVE!!!");
    }
}

UnityEvents的功能不止这些,但这只是帮助您开始使用它的要点。祝你好运!