var waypoint : Transform[];
var speed : float = 5;
private var currentWaypoint : int;
 
 
    function Update () 
    {
        if(currentWaypoint < waypoint.length)
        {
            var target : Vector3 = waypoint[currentWaypoint].position;
            var moveDirection : Vector3 = target - transform.position;
            var velocity = rigidbody.velocity;
 
            if(moveDirection.magnitude < 1)
            {
                currentWaypoint++;
            }
            else
            {
                velocity = moveDirection.normalized*speed;
            }
        }
 
        rigidbody.velocity = velocity;
    }