/*
* $Id$
*
* Copyright (c) 2007 by Rodney Kinney
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License (LGPL) as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, copies are available
* at http://www.opensource.org.
*/
package VASSAL.chat.peer2peer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import VASSAL.chat.Player;
import VASSAL.chat.Room;
/**
* Tracks players entering/exiting a room
*/
public class RoomTracker {
private List<Player> joinedPlayers;
private List<Player> leftPlayers;
public RoomTracker() {
joinedPlayers = new ArrayList<Player>();
leftPlayers = new ArrayList<Player>();
}
public void init(Room r) {
joinedPlayers.clear();
leftPlayers.clear();
leftPlayers.addAll(r.getPlayerList());
}
public void finalize(Room r) {
for (Player p : r.getPlayerList()) {
if (!leftPlayers.contains(p)) {
joinedPlayers.add(p);
}
leftPlayers.remove(p);
}
}
public Enumeration<Player> getJoinedPlayers() {
return Collections.enumeration(joinedPlayers);
}
public Enumeration<Player> getLeftPlayers() {
return Collections.enumeration(leftPlayers);
}
}