void Start()
{
// determine what floor we are on using elevation markers.
if (transform.position.y > GameObject.Find("2").transform.position.y) floor = 2;
else if (transform.position.y > GameObject.Find("1").transform.position.y) floor = 1;
else if (transform.position.y > GameObject.Find("G").transform.position.y) floor = 0;
else floor = -1;
if (floor == 2)
floor = 1;
}