How could i make it so that my bullets destroy after x amount of seconds?

Questions & Answers
1

I want to make it so that after i shoot in my shooting script the bullet is destroyed after x amount of time but i cant figure out how nothing is working ive tried call destroy in and out of the function and it wont work please help!?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Shooting : MonoBehaviour {

public Rigidbody2D bullet;

// Use this for initialization
void Start () {
	
}

// Update is called once per frame
void Update () {
	if (Input.GetButtonDown("Fire1"))
    {
        Rigidbody2D clone;
        clone = Instantiate(bullet, transform.position, transform.rotation);
        clone.velocity = transform.TransformDirection(Vector2.up * 15);
        DestroyObject(clone, 1f);
    }
}

}

3

Just do:

void Update()
{
    if (Input.GetButtonDown("Fire1"))
    {
        Rigidbody2D clone;
        clone = Instantiate(bullet, transform.position, transform.rotation);
        clone.velocity = transform.TransformDirection(Vector2.up * 15);
        Destroy(clone.gameObject, 1f);
    }
}

Note the important thing is when you do Destroy(clone, 1f) instead of Destroy(clone.gameObject, 1f); you only destroy the Rigidbody2D component but not the gameobject it’s attached to.

2

Add a script to the bullet prefab with a timer that removes it after amount of seconds when it becomes instantiated.

public float TimeLeft = 5;
void Update() {
     TimeLeft -= Time.deltaTime;
     if ( TimeLeft < 0 )
     {
         Destroy(this);
     }
}