Help destroying an object that is off limits

Unity Engine
1

Hi guys…

I have a couple of planes with a Z of 3.25, scrolling down, so it looks like a 2D game.
I also have a Space Ship that moves left and right and shoots
And I am in the process of setting up the enemies (they show up each 2 seconds)

My problem is that once the bullets and the enemies go out of sight, they still in the game…

I have try destroying them this way:

if (enemy.transform.position.y < -9.05)
            {
                Destroy(enemy);
            }

But, as a result, I had the prefab deleted from my assets (weird)

How I can set it up? (I tried also with Destroy(this.gameObject) and OnBecameInvisible but none of them worked)

2

Well, it’s not actually weird because you destroyed the prefab. What you need to do instead is instantiate the prefab, and destroy the instance.

–Eric

3

I did… well… I think I did…
This is what I have…
The prefab´s name is Enemy1 and is attached to the script
the Script is:

using UnityEngine;
using System.Collections;

public class Enemy : MonoBehaviour {

    public GameObject enemy;
    public float myTimer = 2;

    void Update()
    {
        myTimer = myTimer -= Time.deltaTime;
        if (myTimer <= 0)
        {
                Enemy1();
                myTimer = 2;
        }
    }

    void Enemy1()
    {
        GameObject myPrefab = (GameObject)Instantiate(enemy, new Vector3(Random.Range(-8.5f, 8.5f), 5f, 3.25f), Quaternion.identity);
            if (enemy.transform.position.y < -9.05)
            {
                Destroy(myPrefab);
            }
    }
}

(this way it does not destroy anything)