converting Physics2D.OverlapCircle to 3D

So i tried using overlap circle to create a torrent now i want it to be 3d , anyone knows how to convert it properly , I have attached my script and attempt with it .



usingUnityEngine;
usingSystem.Collections;
publicclassTower : MonoBehaviour {

publicGameObjectcannonprefab ;
floatradius = 10.0f ;
publicLayerMasklayermask ;
publicfloatfireRate = 0.5F;
privatefloatnextFire = 0.0F;
//Usethisforinitialization
voidStart ()
{

}
//Updateiscalledonceperframe
/*voidUpdate ()
{
Vector3position = gameObject.transform.position ;
Collider2Dsomehting = Physics2D.OverlapCircle(position ,radius ,layermask );


if (somehting != null && Time.time > nextFire)
{
nextFire = Time.time + fireRate;
Vector3Direction = somehting.transform.position - transform.position ;
GameObjectcannon = Instantiate (cannonprefab , transform.position , Quaternion.identity) asGameObject ;
cannon.GetComponent<Rigidbody2D>().AddForce(Direction.normalized*20.0f, ForceMode2D.Impulse);
}
}*/
voidUpdate ()
{
Vector3position = gameObject.transform.position ;
Collider [] somehting = Physics.OverlapSphere(position ,radius ,layermask );


if (somehting != null && Time.time > nextFire)
{
nextFire = Time.time + fireRate;
Vector3Direction = somehting.transform.position - transform.position ;
GameObjectcannon = Instantiate (cannonprefab , transform.position , Quaternion.identity) asGameObject ;
cannon.GetComponent<Rigidbody2D>().AddForce(Direction.normalized*20.0f, ForceMode2D.Impulse);
}
}
}

 

I guess you want a Sphere? http://docs.unity3d.com/ScriptReference/Physics.OverlapSphere.html

 

I just fixed that on my own after some time struggling , but thanks sose ! .