public void Ajuster()
{
Vector3 up;
transform.position = Planete.GetPointSurTerre(transform.position, out up, -Profondeur);
transform.rotation = Quaternion.LookRotation(transform.forward - Vector3.Project(transform.forward, up), up);
}
void InitPositionDeReference()
{
_positionDebut = Planete.GetPointSurTerre(transform.position);
}