2D for 2D (OnTriggerEnter2D) and 3D for 3D (OnTriggerEnter)
at least one object needs to have rigibody, and collider set to isTrigger
yea and this is for unity game engine only
void OnTriggerEnter (Collider other)
{
if (other.gameObject.tag == "Object")
{
Debug.Log ("Collided");
}
//at least one object needs a rigidbody, and a collider set to isTrigger.
//the problem may be that you put it in a void, you need to take it out of voids for it to work