waypoint ai script not going all the way to waypoint

hello, everyone. I have this waypoint ai script, but it doesn't go all the way to the waypoints, it stops short I have no idea how to fix this. all help would be appreciated.

Here is my code:

@script RequireComponent(Rigidbody) enum mt { Sequence, Patrol } var waypoint : Transform[]; var speed : float = 20; var movementType : mt; private var currentWaypoint : int; function Awake() { if(movementType == mt.Patrol) transform.position = waypoint[0].position; } 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;
     }

 } else {
     if(movementType == mt.Patrol)
         currentWaypoint = 0;
 }

 rigidbody.velocity = velocity;