public class InputTargetCamera : MonoBehaviour
{
    private Vector3 _centerofZombies;
    [SerializeField] private Vector3 inputPlusCamera;
    [SerializeField] private float angleOfInput;
    [SerializeField] private float cameraRot;

    void Update()
    {
        if(Game_Mannger.Instance.Zombies.Count == 0) return;
        
        // get input
        Vector3 input = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
        
        // get the Angle of the input
        angleOfInput = (Mathf.Atan2(input.x, input.z));
        // get the camera rotation and make it face to the frond
        cameraRot =  (Camera.main.transform.rotation.eulerAngles.y+90) * Mathf.Deg2Rad;

        // makes sure that the zombie want to go to the survior not past him
        var targetvsSur = (Game_Mannger.Instance.survivor.transform.position - transform.position).magnitude;
        
        // add the input angle and the camera angle to each other. then create a vector from the angles
        inputPlusCamera = new Vector3(
            Mathf.Cos(cameraRot+Mathf.PI + angleOfInput), 0, 
            Mathf.Sin(angleOfInput + cameraRot)).normalized * Mathf.Min(targetvsSur,input.magnitude*10);
        
        // calulate the center of the zombie we know it can't be 0
        _centerofZombies = Vector3.zero;
        foreach (var zomby in Game_Mannger.Instance.Zombies)
        {
            _centerofZombies += zomby.transform.position;
        }
        _centerofZombies /= Game_Mannger.Instance.Zombies.Count;

        // get point on navmesh for zombies
        NavMeshHit hit;
        NavMesh.SamplePosition(_centerofZombies + inputPlusCamera, out hit, 1000, NavMesh.AllAreas);
        
        transform.position = hit.position;
    }

    private void OnDrawGizmos()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawRay(_centerofZombies, inputPlusCamera);
    }
}