void AddPlayer(InputDevice device)
{
if (players.Count >= Config.MAX_PLAYERS)
return;
Player player = new Player ();
player.team = Team_None;
player.device = device;
player.color = availableColors.Shift ();
players.Add (player);
player.HandleAdded ();
if (OnPlayerAdded != null)
OnPlayerAdded (player);
}