Problem with collision detection

Questions & Answers
1

I am making a simple game where you shoot a fireball at a sphere monster that follows you. My code for the collision and the monster's following is this:

var thing : Transform;
var speed : float = 3.0;
function OnControllerColliderHit(hit : ControllerColliderHit)
{
    if(hit.gameObject.tag == "Fireball")
    {
        Debug.Log("hit");
        transform.Destroy(gameObject);
    }
}
function Update () 
{
    transform.LookAt(thing);
    transform.Translate(Vector3.forward * (speed * Time.deltaTime));
}

it doesn't destroy the monster and it doesn't say hit when i play the game and shoot at the monster. I made sure everything that needs it has colliders and everything else works (except for the fact that the monster goes through the terrain's hills)

2

Why are you using "OnControllerColliderHit"? From the documentation:

OnControllerColliderHit is called when the controller hits a collider while performing a Move.

You need to change that to either `OnColliderEnter(Collision hit)` or `OnTriggerEnter(Collider hit)` depending on how you have your game set up.