NavMeshAgent.SamplePathPosition

Parameters

Returns

bool True if terminated before reaching the position at maxDistance, false otherwise.

Description

Sample a position along the current path.

This function looks ahead a specified distance along the current path. Details of the mesh at that position are then returned in a NavMeshHit object. This could be used, for example, to check the type of surface that lies ahead before the character gets there - a character could raise his gun above his head if he is about to wade through water, say.

using UnityEngine;
using UnityEngine.AI;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Transform target;
    private NavMeshAgent agent;
    private int waterMask;


    void Start()
    {
        agent = GetComponent<NavMeshAgent>();
        waterMask = 1 << NavMesh.GetAreaFromName("Water");
        agent.SetDestination(target.position);
    }

    void Update()
    {
        NavMeshHit hit;

        // Check all areas one length unit ahead.
        if (!agent.SamplePathPosition(NavMesh.AllAreas, 1.0F, out hit))
            if ((hit.mask &amp; waterMask) != 0)
            {
                // Water detected along the path...
            }
    }
}