UNITY SCRIPTS:spawn in same location after getting destroyed(after 3 seconds)

Question

hey does anyone knows how to make a C# script for object to re spawn after getting destroyed by a bullet

Answer 1

There are multible ways to archive this.

Note that you can also work completely without Coroutine but this usually sucks

private float timer;

private bool isRespawning;
private GameObject clone;

private void DestroyObject(GameObject obj)
{
    isRespawning = true;
    timer = 3f;

    // first make a clone of the current Object
    var clone = Instantiate(obj, obj.transform.position, obj.transform.rotation, objtransform.parent);

    // disable the clone
    clone.SetActive(false);

    // Destroy the original
    Destroy(obj);
}

private void Update()
{
    if(Mathf.Approximately(timer,0f)) return;

    timer += Time.deltaTime;

    if(timer > 0) return;

    // Set the clone active
    clone.SetActive(true);
    timer = 0;
}

---

Simplier would be a Coroutine:

private void DestroyAndRespawn(GameObject obj)
{
    StartCoroutine(DestroyAndRespawnRoutine(obj));
}

private IEnumerator DestroyAndRespawnRoutine(GameObject obj)
{
    // first make a clone of the current Object
    var clone = Instantiate(obj, obj.transform.position, obj.transform.rotation, objtransform.parent);

    // disable the clone
    clone.SetActive(false);

    // Destroy the original
    Destroy(obj);

    // Wait 3 seconds
    yield return new WaitForSeconds(3f);

    // Set the clone active
    clone.SetActive(true);
}

---

But why should you destroy the object and respawn it? You can simply only disable and later re enable it

private void DestroyAndRespawn(GameObject obj)
{
    StartCoroutine(DestroyAndRespawnRoutine(obj));
}

private IEnumerator DestroyAndRespawnRoutine(GameObject obj)
{
    // disable the obj
    obj.SetActive(false);

    // Wait 3 seconds
    yield return new WaitForSeconds(3f);

    // Set the objactive
    obj.SetActive(true);
}

---

Update

Since you want to call this on collision:

You will need another GameObject that works as a Manager for the respawning / enabling, disabling since you can not just attach that script to the object you disable -> would also disable the script and never re-enable the object.

1. Create a new empty GameObject e.g. called "RespawnManager"

2. Create a new Script RespawnManager.cs:

   public class RespawnManager : MonoBehaviour
   {
       public static RespawnManager Singleton;
   
       private void Awake()
       {
           if(Singleton)
           {
               enabled = false;
               return;
           }
   
           Singleton = this;
       }
   
       private void DestroyAndRespawn(GameObject obj)
       {
           StartCoroutine(DestroyAndRespawnRoutine(obj));
       }
   
       private IEnumerator DestroyAndRespawnRoutine(GameObject obj)
       {
           // disable the obj
           obj.SetActive(false);
   
           // Wait 3 seconds
           yield return new WaitForSeconds(3f);
   
           // Set the objactive
           obj.SetActive(true);
       }
   }
   

3. Than you can call it on collision like

   OnCollisionEnter(Collision obj)
   {
       if (obj.gameObject.name != "bullet") return;
   
       // pass this GameObject to the manager
       RespawnManager.Singleton.DestroyAndRespawn(gameObject);
   }
   

Answer 2

Set object active to False. using

gameobject.SetActive(false);

And you can use Coroutine to do this.

Answer 3

If you use Destroy(yourObject);, the object does get removed and you loose access. You could make your Object into a prefab and spawn it where you want by using GameObject obj = Instantiate(...); Obj contains the reference to the new spawned object and not to the prefab, which means you can later again use Destroy(obj);