Shooting problem: "The object of type 'GameObject has been destroyed"

Unity Engine
1

I have this code:

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

public class Bullet : MonoBehaviour
{
    public float speed;
    private Rigidbody2D m_rig;
    public Transform player_pos;


    // Start is called before the first frame update
    void Start()
    {
        m_rig = GetComponent<Rigidbody2D>();
        m_rig.AddForce(Vector2.right*speed, ForceMode2D.Impulse);
        Invoke("Destruir_", 2);
    }

    // Update is called once per frame
    void Update()
    {
        //Flip bullet

        if (player_pos.position.x > this.transform.position.x)
        {
            speed *= -1;
        }
        else
        {
            speed *= -1;
        }
    }

    void Destruir_()
    {
        Destroy(this.gameObject);
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        Destruir_();
       
    }

 

}

And when i try to play the game i have an error that says: “MissingReferenceException: The object of type 'GameObject has been destroyed but you are still trying to access it.” And when i see the hierarchy the object of bullet has been destroyed but i don’t understand why doesn’t appear again the bullet. I’m new at coding, probably i missing something but i don’t know what.

2

Why are you invoking Destruir_ in your start routine?

3

I did this following a tutorial and he did it in that way. But are you saying i should put the invoke on the update maybe?

4

No, it is just an odd way to do things. You might try temporarily commenting it out and seeing if it is the cause of the issue though.

5

I was able to solve it this way:

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

public class Bullet : MonoBehaviour
{

public float bulletSpeed = 15f;
public Rigidbody2D rb;
public Transform player_pos;

void Start()
    {
        player_pos = GameObject.Find("Player").transform;
    }

private void FixedUpdate()
    {
        if (player_pos.position.x > this.transform.position.x)
        {
            rb.velocity = transform.right * bulletSpeed;
        } else
        {
            rb.velocity = transform.right * -bulletSpeed;
        }
    }
     
    private void OnCollisionEnter2D(Collision2D collision)
    {
        Destroy(gameObject);
      
    }

}
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