How to check if BoxCollider2D collided with another BoxCollider2D?

Questions & Answers
1

I have a player and an enemy. The player has a BoxCollider2D and so does the enemy. How can I check if the player’s BoxCollider2D collided with the enemy’s BoxCollider2D?

2

you can use OnTriggerEnter2D function.

for example I attached this script to a bomb,if player collides with it ,it Will explode.

  void OnTriggerEnter2D(Collider2D other){
	if (other.name == "player") {
           
			Destroy (other.gameObject);

	}

}

you can also check it like this

 void OnTriggerEnter2D(Collider2D other){
	if (other.name == "player") {
           
			// playerCollides with the Enemy

	}

}

and for exit

 void OnTriggerExit2D(Collider2D other){
	if (other.name == "player") {
           
			// player is not colliding  with the Enemy  anymore

	}

}

but at least one of your objects should have a Rigidbody2D component and at least of of BoxCollider2Ds should be trigger.

and if your colliders should not be trigger you can use

OnCollisionEnter2D(Collision2D other){

}
3

Check the official Unity documentation on this, it has almost exactly what you’re asking for.