Velocity at which the obstacle moves around the NavMesh.

// Simple behaviour to block the player who we assume is controlled
// by a NavMeshAgent.
var obs: NavMeshObstacle;
var player: Transform;
var moveSpeed: float;
function Start () {
	obs = GetComponent.<NavMeshObstacle>();
}
function Update() {
	// Find the heading to a target point five units in front of the player.
	var targetPoint = player.TransformPoint(Vector3.forward * 5.0);
	var heading = (player.position - transform.position).normalized;
	
	// Set the obstacle to move to the target at a predetermined speed.
	obs.velocity = heading * moveSpeed;
}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public NavMeshObstacle obs;
    public Transform player;
    public float moveSpeed;
    void Start() {
        obs = GetComponent<NavMeshObstacle>();
    }
    void Update() {
        Vector3 targetPoint = player.TransformPoint(Vector3.forward * 5.0F);
        Vector3 heading = player.position - transform.position.normalized;
        obs.velocity = heading * moveSpeed;
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public obs as NavMeshObstacle

	public player as Transform

	public moveSpeed as float

	def Start() as void:
		obs = GetComponent[of NavMeshObstacle]()

	def Update() as void:
		targetPoint as Vector3 = player.TransformPoint((Vector3.forward * 5.0F))
		heading as Vector3 = (player.position - transform.position).normalized
		obs.velocity = (heading * moveSpeed)