var room = HBInit({ roomName: My room, maxPlayers: 16 });
room.setDefaultStadium(Big);
room.setScoreLimit(5);
room.setTimeLimit(0);

// If there are no admins left in the room give admin to one of the remaining players.
function updateAdmins() {
  // Get all players except the host (id = 0 is always the host)
  var players = room.getPlayerList().filter((player) => player.id != 0 );
  if ( players.length == 0 ) return; // No players left, do nothing.
  if ( players.find((player) => player.admin) != null ) return; // There's an admin left so do nothing.
  room.setPlayerAdmin(players[0].id, true); // Give admin to the first non admin player in the list
}

room.onPlayerJoin = function(player) {
updateAdmins();
}

room.onPlayerLeave = function(player) {
updateAdmins();
}