Collision2d race condition on enemy death

Questions & Answers
1

I have gates in my game that cause an explosion on each of their two edges (identical to this: Geometry Wars 2: Pacifism: 20.1B - YouTube).

On an enemy death, I want to call the die() function of the EnemyController. So I added a circle collider to my GateExplosion, and use this simple code:

private void OnTriggerEnter2D(Collider2D collider2D)
    {
        if (collider2D.CompareTag("Enemy"))
        {
            EnemyController c = collider2D.gameObject.GetComponent<EnemyController>();
            c.die();
        }
    }

Code from EnemyController:

public void die()
{
    for (int i = 0; i < numScoreDrops; i++)
    {
        GameObject newScore = Instantiate(scoreObject, transform.position, Quaternion.Euler(new Vector3(0f, 0f, Random.Range(0f, 360f))));
    }
    Destroy(gameObject);
}

However, I noticed that sometimes it will drop double the number of score drops. I think this is because both collisions happen simultaneously and call die() twice. How can I avoid this race condition?

Also, the collider itself is pretty inconsistent, but I think that is unrelated to this issue. Thanks!

2

I’m dumb, I had reworked the logic of my game a little bit and didn’t think to just check for the collision inside the enemy script instead of the gate explosion script. Fixed my problem and the other inconsistency I mentioned.