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Question by unity_580000564 · Jan 28 at 06:43 PM · c#2dscripting problem2d-platformerscripting beginner

How do I make it so it spawns 1 clone instead of 2?

I'm making a 2d platformer and I got a death and respawn mechanic but when I die it makes 2 clones instead of just one which means he multiplies every time he dies, while it is a cool thing to have in a game it gets bad quick and doesn't fit my vision of the game.

Level manager script:

 public class LevelManager : MonoBehaviour{
 public static LevelManager instance;
  public Transform respawnPoint;
  public GameObject Chip;
 
  private void Awake() {
      instance = this;
  }
 public void Respawn () {
      Instantiate(Chip, respawnPoint.position, Quaternion.identity);
  }
 }




Death:

 public class DeathScript : MonoBehaviour
 {
     private void OnCollisionEnter2D(Collision2D collision) {
     if (collision.gameObject.CompareTag("Spikes")){
         Destroy(gameObject);
         LevelManager.instance.Respawn();
 }
     }
 }






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Answer by Martin_Anderson · Jan 28 at 06:49 PM

It is possible that the script is running twice. Do you have the script on more than one object, or on an object more than once?

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avatar image unity_580000564 · Feb 01 at 06:29 PM 0
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I checked and I didn't see it running twice, thanks for the help though!

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Answer by privatecontractor · Jan 28 at 09:22 PM

Hi man,

I rewrite my answer in order to try help instead of making bigger mess in answers... Please be aware that have hard time going through your code... maybe because its displayed as plain text. So in the future (or maybe even start with this one... use edit options to post code).


Few things: you do not need:

public static instance LevelSomething....

lots of your mess occurs from fact that you cant check what and when accessing data/voids because you making everything public.... so according to your way, you make it public static instance to reach it from everywhere... to make it simple and easy.... but as same time, you will be not sure who call it, especially on bigger projects.


Instead push reference to this LevelManager through code, make Setup void on your Instantiate prefabs and push through it all references that need to be added.


Awesome, thx for fixing way of code being displayed.... This line:

LevelManager.instance.Respawn();

I belive it possible that your prefab making two times:

OnCollisionEnter2D

Before destroys itself?

Maybe try add at top not in void()...

bool m_calledForRespawn = false;

Then:

 if (m_calledForRespawn) return;
 m_calledForRespawn = true;
 Destroy(gameObject);
 LevelManager.instance.Respawn();


Hope now will do, let me know.

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avatar image unity_580000564 · Feb 01 at 06:27 PM 0
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My problem with the first one is that I need the levelmanager instance public for the death script and when I added the debug log it told me thousands of times how many clones are added each time with the name "audio listener instead of clone"

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