protected function addMessage(Game $game, $author, $message)
{
$author = (string) $author;
$message = (string) $message;
if ('' === $message) {
throw new \InvalidArgumentException('Messenger: Can not add empty message');
}
if (mb_strlen($message) > 140) {
throw new \InvalidArgumentException('Messenger: message is too long');
}
if ($game->addRoomMessage($author, $message)) {
$sayEvent = array('type' => 'message', 'message' => array($author, $message));
foreach ($game->getPlayers() as $player) {
$player->addEventToStack($sayEvent);
}
}
}
