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Question by fullofturtles · Dec 10, 2020 at 04:31 AM · collisiontriggercolliderscollision detectioncollider2d

Gameobject not detecting collison from other Box Collider 2D [SOLVED?]

Unity Version 2019.4.12f1

I am attempting to detect a collision from a Box Collider 2D that is turned on and off when the player uses a certain attack. I have tried everything I can possibly think of as to why this isn't working.

public void OnCollisionEnter2D(Collision2D col) {

     if (col.collider.name == "Bullet(Clone)")
     {
         health -= 1;
     }

     if (health <= 0)
     {
         Destroy(turret);
         Debug.Log("turret destroyed");
     }

     if (col.collider.name == "shieldSlam")
     {
         isStunned = true;
         stunnedTimer = 3;
     }

 }

}

The bullet detecting works perfectly fine. It is only the third if statement that doesn't work. It is not the way it is written, as I have substituted other Colliders in it's place and it has functioned then.

I have tried: ensuring collision matrix is correct, ensuring one of them as a non-kinematic rigidbody, both have colliders, both have continuous collision detection, ensuring the attacks' collider is ENABLED at the proper timing for collisions, ensuring z-position is accurate on both, trying to find it by tag rather than name, renaming it, un-childing the attack collider from player.

I am unsure as to what else I need to possibly check. I feel like I have been staring at this small issue for nearly 2 hours.

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Answer by fullofturtles · Dec 10, 2020 at 05:09 AM

I fixed it by using "OnTriggerEnter2D" and ignoring an if statement. For some reason finding it by name/tag was just not working, so I had to use it as a lone trigger. Still unsure as to why though.

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Answer by theLameBrain · Aug 10, 2021 at 05:46 PM

@fullofturtles try using col.collider.gameObject.name?

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