var isDoorOpen = false;
var door = gameObject.FindWithTag("pintu");
var hit : RaycastHit;

//Declare functions
function openDoor{
    door.animation.Play("Buka");
}

function closeDoor{
    door.animation.Play("Tutup");
}

function activateDoor(){
    if(!isDoorOpen){
       openDoor();
       isDoorOpen = true;
    }
}

if(Physics.Raycast(transform.position, transform.forward, hit, 2))
{
    if(hit.collider.gameObject.tag == "player" )
  {
    if (Input.GetKeyDown ("a"))
   {
      door.activateDoor();
    }
    }