Why does my OnCollisionEnter2D not work?

Question

So, I'm trying to implement power ups in my game and they work well and all, but when I collide with my power ups they just move like I'm pushing them, even though I have OnCollisionEnter2D in the script, it doesn't work, and the reason why I have it with collision and not trigger is because I don't want them to be floating in the air, meaning that they have a rigid body and that they have gravity applied to them. Why does this not work?

 var ScoreToGive : int;
 
 var PowerUpName : String;
 
 var PlayerScript;
 
 function Start () {
 
 var Player = GameObject.FindGameObjectWithTag("Player");
 
 PlayerScript = Player.GetComponent(InfiniteScore);
 
 }
 
 function OnCollisonEnter2D (Other : Collider2D) {
 
 if(Other.gameObject.tag == "Player"){
 
 PlayerScript.CurrentScore += ScoreToGive;
 Debug.Log("The player acquired a/n " + PowerUpName);
 Destroy (this.gameObject);
 
    }
 
 }

Answer 1

Answer by r005t · May 16, 2014 at 07:52 PM

I believe the parameter to OnCollisionEnter2D should be of type Collision2D not Collider2D.

From Unity Script Reference:

  void OnCollisionEnter2D(Collision2D coll) {
         if (coll.gameObject.tag == "Enemy")
             coll.gameObject.SendMessage("ApplyDamage", 10);
         
     }

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Answer 2

Answer by TrevorP · May 16, 2014 at 08:29 PM

There's a few things you have to do:

The PowerUps needs to be on a different layer than the player and then go to Edit->Project Settings -> Physics2D to make sure they don't push each other around.
Next just add another collider to your PowerUp and set it to IsTrigger
Last, add a OnTriggerEnter2D(Other : Collider2D) to your script (instead of OnCollisionEnter2D)

That should do it

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Answer 3

Answer by richardgengle · Aug 07, 2020 at 04:14 AM

make sure you dont have collider scripts on both objects,,, unity seems to chose the simpler one,,, the one that hasnt had any varibles modified...

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Why does my OnCollisionEnter2D not work?

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