public void clearSigns(int a) {
if (signs.get(a) != null) {
for (LobbyWall ls : signs.get(a)) {
ls.clear();
}
}
}
public void clearAllSigns() {
for (ArrayList<LobbyWall> lws : signs.values()) {
for (LobbyWall lw : lws) {
lw.clear();
}
}
}
