Hello, im trying to make that the enemy is following the player with a script and a Nav mesh agent but its not working i got this error:
SetDestination" can only be called on an active agent that has been placed on a NavMesh.
UnityEngine.AI.NavMeshAgent:SetDestination(Vector3)
EnnemyController:Update() (at Assets/Script/EnnemyController.cs:23)
My script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
public class EnnemyController : MonoBehaviour {
public float lookRadius = 10f;
Transform target;
NavMeshAgent agent;
void Start () {
target = PlayerManager.instance.player.transform;
agent = GetComponent<NavMeshAgent>();
}
void Update () {
float distance = Vector3.Distance(target.position, transform.position);
if (distance <= lookRadius)
{
agent.SetDestination(target.position);
}
}
void OnDrawGizmosSelected ()
{
Gizmos.color = Color.red;
Gizmos.DrawWireSphere(transform.position, lookRadius);
}
}
I’m still new to Unity, what else can I do to solve these kinds of problem? I tried doing the Window, AI,… solution but it did nothing. I also tried moving the NavMeshAgent up/down in the inspector menu but it shows a window that says ‘Cannot restructure prefab instance’ : “Children of Prefab instance cannot be…” When I clicked Open Prefab, The inspector only showed the Transform and Animator. It did not show the NavMeshAgent nor the Script. Please help me
For me, it solved by this:
Maybe the person is a prefab and you are instantiating at runtime. This way, Reset the Transform of the prefab in such a way that he is touching the ground. Whether or not a person is a prefab, His X,Y,Z of transform should be in such a way that his feet touching the ground.
Your object’s capsule collider’s radius / height and the navmesh agent’s collider’s radius / height has to match.
For example my enemy’ s capsule collider’s radius was 39 and height was 223. Nav Mesh Agent’s radius was 0,5 and height was 2,0 so always got an error such as SetDestination" can only be called on an active agent that has been placed on a NavMesh. After i changed nav mesh agent’s radius and height to my enemy object’ s collider values, everything worked perfectly.
Thanks for the fix. I started with a modular scene and the instantiate to spawn points worked fine.(2018.4.13f1) Once I changed to a terrain, the spawn still worked but the enemies could not see the player and did not move. The fix was to add the prefabs back to the new terrain and create new prefabs (deleted the original prefabs). Of course I had to attach the new prefabs to the object references in the inspector since using [serialized fields].
That was our problem.
Any specific steps to take to fix this?
I haven’t been able to figure out how to create separate NavMesh in one scene? That was our original goal. It used to be done using the “NavMeshSurface” component on an Empty GameObject. You could have two or three of these in your scene.
Now though, it is a Navigation panel that seems to be one single NavMesh for the entire scene. Yet that means only one type of enemy can use the NavMesh and the others say there is no NavMesh at all.
I have done everything listed above but it still does not work, I have the same script as Tornado77, I have a NavMesh set on the floor of my scene, my character is touching the ground, my capsule collider’s radius is the same as the height of my navmesh agent’s collider’s radius. What can Id do to fix this? (I also have the error: “Failed to create agent because it is not close enough to the NavMesh”)
