Question How to make sure the Nav agent has no path?

In my FPS game, there are (currently) certain places where enemies simply can't get to but the player can. While solving these is an objective in the future, I want to make sure enemies know they are never going to be able to get to these places instead of glitching out moving inch by inch in weird directions and rapidly alternating between pursuing the player and giving up doing so.

How do I make sure of that? I tried the using

NavMeshAgent.hasPath

and

NavMeshAgent.isStopped.isPathStale

to determine if there is a path and

NavMeshAgent.isStopped

to stop them but that didn't work out very well.

Code (CSharp):

1.     void ChaseTarget (int TargetNum)
2.     {
3.         if (!TargetStats[TargetNum].Dead)
4.         {
5.             float DistanceFromPlayer = Vector3.Distance(Player [TargetNum].position, transform.position);
6.             Agent.SetDestination(Player [TargetNum].position);
7.  
8.             if (Agent.hasPath && !Agent.isPathStale)
9.             {
10.                 Agent.isStopped = false;
11.                 EnemyStatus = EnemyState.Pursuing;
12.  
13.                 if (DistanceFromPlayer < Enemy.AttackReach)
14.                 {
15.                     FaceTarget(TargetNum);
16.                 }
17.             }
18.             else
19.             {
20.                 ForgetTarget();
21.             }
22.         }
23.     }
24.  
25.     void ForgetTarget ()
26.     {
27.         Agent.isStopped = true;
28.         CurrentPlayerTarget = -1;
29.         EnemyStatus = EnemyState.Idle;
30.     }
31.  

 

Any ideas?

 

So my suggestion would be to cache the latest SetDestination vector to the player, and then if the path is complete you check the distance between those. If there is a big gap, you know they will not be able to reach them.

To check if they have reached their closest point, you could try to work with NavMeshAgent.remainingDistance.

 

I already have scripts for the enemies to "forget" the player when they get too far, but I am not talking about distance, I am talking about places where the player is completely unreacheable (for example, if the player jumped to a high location that there is no path to connect).

 

Then I am not sure if I understand your question correctly.

You know if they can reach the player if the endpoint of the enemy path has a distance to the player.