Unity Raycast works only once-Ignores NavMeshAgents

Question

I'm new to unity and just trying to build a game.

I've been trying to use Raycast to detect if an enemy is next to the player and I can't seem to get the Physics.Raycast working properly.

Everything works fine in the scene mode and at the beginning of the start mode.But then it stops responding.

I checked threads with similar issues, but it seems I have all those covered(the most common issue is also addressed-the objects I am attempting to detect have rigidbodies and box colliders attached to them)

This is the script I'm working with.

public class hitPlayer : MonoBehaviour
{
   

    public GameObject player;
    public Transform m_transform;
    Animator playerAnimator;
    int layerMask;
    RaycastHit m_Hit;
    float maxDistance = 5f;


void Start()
{
    layerMask = 1 << 8;
    layerMask = ~layerMask;

 
    playerAnimator = player.GetComponent<Animator>();
}
public void onTouch()
{

    
    
    bool isHit = Physics.Raycast(m_transform.position, -m_transform.right, out m_Hit, maxDistance, layerMask);

    if (isHit)
    {
        playerAnimator.SetTrigger("leftHit");
    }
    else
    {
        playerAnimator.SetTrigger("rightHit");
    }

}
void OnDrawGizmos()
{


    bool isHit = Physics.Raycast(m_transform.position, -m_transform.right, out hit, maxDistance,layerMask);
    Debug.Log(isHit);
    if (isHit)
    {
        Gizmos.color = Color.red;
        Gizmos.DrawRay(m_transform.position, -m_transform.right * hit.distance);
    }
    else
    {
        Gizmos.color = Color.green;
        Gizmos.DrawRay(m_transform.position, -m_transform.right * maxDistance);
    }
}
}

Would highly appreciate your assistance in fixing this issue which is to get the raycast working right throughout the game. Thanks in advance.

Answer 1

I don't know why this works, but this is how I got my problem fixed. I believe the problem occurs when you have both a navmesh agent on the object as well as a rigidbody. Remove the rigidbody and it should work pretty well.

But in my case I changed the Collision Detection on the rigidbody component of my Nav Mesh Agent GameObject from 'Discrete', to 'Continuous' instead.This gave me the best results and the Raycast works just as expected.