禁用对象时，.activeInHierarchy的输出仍然为true

Question

I'm currently learning the basics of Unity and, as always when one is learning something new , I'm a bit stuck.

There is a falling cube that is being set inactive when it collides with something. I was planning on making a parent script that checks if the cube is active or inactive. And when it's inactive, it outputs the state of the boolean eActive in the console.

But whenever the falling cube is colliding with something it does disappear, but the output of the boolean is still true.

Both scripts:

Enemy.cs

using UnityEngine;

public class Enemy : MonoBehaviour {

GameObject enemy;

// Use this for initialization
void Start () 
{
    enemy = GameObject.Find("Enemy");
    enemy.SetActive(true);
}

public void OnCollisionEnter(Collision collision)
{
    enemy.SetActive(false);
}
}

EnemySpawn.cs

using UnityEngine;

public class EnemySpawn : MonoBehaviour {

GameObject enemy;
public bool eActive ;

// Use this for initialization
void Start () 
{
    enemy = GameObject.FindWithTag("Enemy");
    eActive = enemy.activeInHierarchy;
    Debug.Log(eActive);
}

// Update is called once per frame
void Update () 
{
    Destroyed();
}

void Destroyed()
{
    if (!eActive)
    {
        Debug.Log(eActive);
    }
}
} 

Would love to hear what I'm doing wrong and if there are better ways to do these kind of things in Unity!

Big thanks in advance :)

Answer 1

There are two problems in your code

1-) You assign a value to eActive in Start and never update it when object is disabled. So it is always true because it is never updated.

2-) Use GameObject.activeSelf instead of activeInHierarchy since you just enable and disable the object and your object has no parents! . Also you do not need a boolean variable to hold activeSelf or care about updating it. Unity does this for you just use it.

So your Destroy method should look like this:

void Destroyed()
{
    if (!enemy.activeSelf)
    {
        Debug.Log("Enemy is not active");
    }
}

Good luck!