Getting a List of Gameobjects in a collider

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I need a list of game objects that are inside of a boxcollider and be able to access each one individually. there will be hundreds of said game objects so I can't just get all of the objects with a certain tag and compare distance.

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Answer by Fariborzzn · Feb 01, 2020 at 12:03 AM

you can use: Physics.OverlapBox It will Find all colliders touching or inside of the given box. so you can set the size of your box for your purpose (you mentioned distance) HERE

  Collider[] hitColliders = Physics.OverlapBox(gameObject.transform.position, transform.localScale / 2, Quaternion.identity, m_LayerMask);

and use for or foreach loop to do your function on them

it will return collider so for accessing game object you have to this:

 Collider.gameObject

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LeEHil · Apr 20 at 07:06 AM 0

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Just in case anybody needs a complete and working code example:

     private void GetObjectsInBoxCollider(BoxCollider collider)
     {
         Collider[] colliders = Physics.OverlapBox(
             center:collider.transform.position + (collider.transform.rotation * collider.center), 
             halfExtents:Vector3.Scale(collider.size * 0.5f, collider.transform.lossyScale), 
             orientation:collider.transform.rotation, 
             layerMask:~0);
         List<Transform> objectsInBox = new List<Transform>();
         foreach (var c in colliders)
         {
             Transform t = c.transform;
             while (t.parent != null && t.GetComponent<SomeType>() == null) t = t.parent;
             if (t.GetComponent<SomeType>() != null 
                 && t != collider.transform 
                 && !objectsInBox.Contains(t)) 
                 objectsInBox.Add(t);
         }
         for (int i = 0; i < objectsInBox.Count; i++) DoSomething(objectsInBox[i]);
     }

Just replace "SomeType" with the type or classname you are looking for and add a method to do whatever you like to do with your gameobjects.

Getting a List of Gameobjects in a collider

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