Destroy command not working

if (Przeszkoda.transform.position.z <= -5f)
{
Destroy(Przeszkoda);
}
This is a fragment of my code, why doesn't it destroy the "przeszkoda" objects when they pass the location -5 on the z axis. I don't get any errors, it just doesn't work.

 

Keep in mind that Destroy() does not happen immediately but rather at the end of the frame. Usually this does not matter, but it might depending on your reliance on that value.

To help gain more insight into your problem, I recommend liberally sprinkling Debug.Log() statements through your code to display information in realtime.

Doing this should help you answer these types of questions:

- is this code even running? which parts are running? how often does it run?
- what are the values of the variables involved? Are they initialized?

Knowing this information will help you reason about the behavior you are seeing.

 

Another thing to note... what kind of thing is "Przeszkoda"? Is it a GameObject, or a Component? If it's a Component (for example one of your scripts), Destroy will only destroy that individual component and not the entire GameObject.

If you want to destroy the whole GameObject you need to do

Destroy(Przeszkoda.gameObject)

 

You're right it for some reason does not trigger at all. Why could that be. Is there something wrong with the if? Bcs Przeszkoda is my prefab obstacle in my game.

 

Przeszkoda is my prefab obstacle but apparently the code never triggers

 

Is it the prefab, or a clone?

 

It is a prefab that gets cloned a lot, I want to destroy objects that go off screen so they don't take up memory.

 

Is this if inside Updat()?

 

yes

 

You must refer to the instantiated object, instead of the prefab itself. When you Instantiate the prefab, save it at some variable in order to be able to come back to it and destroy it. Btw Unity has a method called OnBecameInvisible which could be usefull for this purposes.

 

If something is a prefab, it is on disk. You cannot and you do not destroy it at runtime. Just stop referencing it and eventually the memory will be released.

In fact if you try to Destroy() a prefab on disk, you should see a warning or error in the console.

If something is in-scene and you are using it as a template to clone fresh ones, you may delete that.

If you make a copy of something with Instantiate, that function returns a reference that you may later Destroy().