OnCollisionEnter2D being called twice sometimes

Questions & Answers
1

I’m attempting to make a top-down racing game, but when my Player crosses the finish line it’s calling collision twice henceforth adding 2 laps

  private void OnCollisionEnter2D(Collision2D collision)
     {
         if (collision.gameObject.layer == 12)
         {
             Debug.Log("col enter " + gameObject);
             lapCounter.AddToLapCount();
         }
     }

I found out through the debug log that when I don’t turn while going through the finish it gets called once. When I do turn it gets called twice.

2

Try using a bool, it will ignore multiple collisions and only register the first. I would use ontrigger instead of oncollision as well.

public bool lapBool

void OnTriggerEnter(Collider other)
{
    if (other.gameObject.layer == 12 && lapBool == false)
    {
        //Set your bool to be true
        lapBool = true;
    }
}
void Update()
{
    if (lapBool == true)
    {
        //Run your function
        lapCounter.AddToLapCount();
        lapBool = false;
    }
}