Check if gameobject is destroyed

How do you check if something is destroyed.
Like if you win a mission in game you have to kill something. And the "mission manager" checks to see if it is destroyed.
Thanks

 

check if its null

 

To expand on that

Code (csharp):

1.  
2. if (theObject == null) {
3.     Debug.Log ("Its destroyed");
4. }
5.  

Though in the example you gave, usually the 'something' would send a message to the mission manager instead of it checking blindly every frame.

 

necro-ing this for correctness

Note: GameObjects get destroyed at the end of the current frame by default (unless you choose the immediate option, which is not advisable). Therefore checks against null in the same frame will not work.

 

It's true, my current solution is have a flag to mark if object is destroyed

Code (CSharp):

1. bool m_isDestroy = false;
2.  
3. //Force/remind coder to use this function for destroying
4. public void Destroy()
5. {
6.     if(!m_isDestroy)
7.     {
8.         GameObject.Destroy(gameObject);
9.         m_isDestroy = true;
10.     }  
11. }
12.  
13. //Use this function to check
14. public bool IsDestroy
15. {
16.     get { return m_isDestroy; }
17. }

Not the best because I can't programmatically force coder to use that `Destroy()` function for destroying.