Firing bullets ( Tnx for the help )

Questions & Answers
1

using UnityEngine;
using System.Collections;

public class instantiate : MonoBehaviour
{   // have a bullet.prefab, and attached it to script 
    public Rigidbody bullet;
    // barrelEnd- an empty object ( attached to the script ) [ in front of the gun ]
    public Transform barrelEnd;
      
    void Update ()
    {   
        if(Input.GetButtonDown("Fire1"))
        {   Rigidbody bulletInstance;       
            bulletInstance = Instantiate(bullet, barrelEnd.position, barrelEnd.rotation) as Rigidbody;
            bulletInstance.AddForce(barrelEnd.forward * 5000);
            // to distroy the bullet after 5 seconds 
            Destroy(bulletInstance,5.0f);
        }
                    
    }
    
}

The code is from an unity tutorial :-

https://unity3d.com/learn/tutorials/modules/beginner/scripting/on-mouse-down?playlist=17117
I tried to do the same as told in the video.

But when i play the game, soon after the 1.0f time, the bullet prefab itself getting destroyed and couldn’t fire the weapon

Error:-
MissingReferenceException: The object of type ‘Rigidbody’ has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.Object.Internal_InstantiateSingle (UnityEngine.Object data, Vector3 pos, Quaternion rot) (at C:/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineObjectBindings.gen.cs:60)
UnityEngine.Object.Instantiate (UnityEngine.Object original, Vector3 position, Quaternion rotation) (at C:/buildslave/unity/build/Runtime/Export/UnityEngineObject.cs:80)
instantiate.Update () (at Assets/Scripts/instantiate.cs:20)

so i changed the code like this and :-
I was able to fire but as i fire bullets more bullet instances are formed, but nothing is getting destroyed ( they all pile up in my hierarchy )

2

So if i am correct, you can shoot the bullets but they stay in the scene forever. What you need to do is add a timer like this and attatch it to the bullet prefab.

//Time the object will be in the game (in ticks).

var timeIn = 5000;

function Update(){

//Deletes 1 from the timeIn variable every tick.

timeIn -= 1;

if(timeIn <= 0){

//Destroys the game object if the timeIn reaches 0.

Destroy(this.gameObject);

}

}