// useless
private void CheckForMerge()
{
GameObject[] groups = GameObject.FindGameObjectsWithTag("group");
foreach (GameObject groupObj in groups)
{
Groupe group = groupObj.GetComponent <Groupe>();
// if 2 groups are to close
if ((group.transform.position - transform.position).magnitude < minMergeDistance)
{
this.MergeGroup(group.GetComponent <Groupe>());
}
}
}