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Question by FraTach03 · Apr 29, 2021 at 08:06 PM · collision detectioncollision2d

OverlapCircleAll detects too many collisions

Hi, i'm trying to make some melee combat. I've got a player with a script where I use OverlapCircleAll to detect enemy colliders and print their names after an attack input is given. Then I have an enemy prefab made up of just a Rigidbody2D and a BoxCollider2D. I have assigned the enemy to a dedicated enemy layer (enemyLayers) which I gave to the OverlapCircleAll function in the player script. The problem is that when I hit the enemy its name is printed not one but like 500 times and causes lag. I imagine the function is just detecting multiple collisions with the same object but dont know how to fix it. Thank you in advance.

This is the function I call every time the input is given: alt text

And here are the components of the enemy alt text

screenshot-83.png (52.0 kB)
screenshot-87.png (60.6 kB)
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Answer by Llama_w_2Ls · Apr 30, 2021 at 02:58 AM

You can add any hit enemies to a list, then check whether the list already contains your enemy before completing an action with it. E.g:

 IEnumerable<GameObject> Enemies;
 
 void Punch()
 {
      var cols = Physics.OverlapSphereAll(pos, range);
      
      if (Enemies == null)
           Enemies = cols;
           
      var enemies = cols.Where(x => !Enemies.Contains(x));
 
      foreach (var newEnemy in Enemies)
      {
             // Do smt with the unique enemy once
 
       }
 }

Its important to refresh the list every time you punch again Hope that helps

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Answer by FraTach03 · Apr 30, 2021 at 05:52 PM

I found all I had to do was setting a time to wait between each attack. Splatting my face for you right now. Thanks for your time anyway.

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