Destructible GameObject OnTriggerEnter2D getting called twice

Questions & Answers
1

Expected Result: PowerUp GameObject floats around the screen and bounces off collision (e.g. walls) until it collides with a player, or gets destroyed by their bullets. Bullets should only do 1 point of damage per collision.

Setup: I have a PowerUp GameObject that has both a CircleCollider2D with a Bounce Material to get it to bounce off collision, and a BoxCollider2D flagged as “isTrigger” to get it to apply the PowerUp effect to the player that collides with it.

Actual Results: PowerUp GameObject works except for that it sometimes takes double damage per shot. I assume based on research that this is due to the fact I have two colliders on the same GameObject.

Request: How can I set this GameObject up to achieve the Expected Result?

Here’s a code snippet that handles the damage. Basic stuff:

        if (collision.CompareTag ("Laser_p1") || collision.CompareTag("Laser_p2"))
        {
            health--;
            Destroy(collision.gameObject);
            FindObjectOfType<AudioManager>().Play("powerup_hit");
            StartCoroutine(Flash());
        }
2

Now I’m not an expert and am actually pretty new to unity myself, but as a fix I believe you could setup a bool like damageDelt and do something like this

if (collision.CompareTag ("Laser_p1") || collision.CompareTag("Laser_p2"))
{
	if(damageDelt != true){
		health--;
		Destroy(collision.gameObject);
		FindObjectOfType<AudioManager>().Play("powerup_hit");
		StartCoroutine(Flash());
		damageDelt = true;	
	}
}