/**
	 * Called when a player logs in<br><br>
	 *
	 * @param playerInstance<br>
	 */
	public static void onLogin(L2PcInstance playerInstance)
	{
		if (playerInstance == null || (!isStarting() && !isStarted()))
			return;

		byte teamId = getParticipantTeamId(playerInstance.getName());

		if (teamId == -1)
			return;

		_teams[teamId].addPlayer(playerInstance);
		new TvTEventTeleporter(playerInstance, _teams[teamId].getCoordinates(), true, false);
	}

	/**
	 * Called when a player logs out<br><br>
	 *
	 * @param playerInstance<br>
	 */
	public static void onLogout(L2PcInstance playerInstance)
	{
		if (playerInstance == null || (!isStarting() && !isStarted()))
			return;

		removeParticipant(playerInstance.getName());
	}

	/**
	 * Called on every bypass by npc of type L2TvTEventNpc<br>
	 * Needs synchronization cause of the max player check<br><br>
	 *
	 * @param command<br>
	 * @param playerInstance<br>
	 */
	public static synchronized void onBypass(String command, L2PcInstance playerInstance)
	{
		if (playerInstance == null || !isParticipating())
			return;

		if (command.equals("tvt_event_participation"))
		{
			NpcHtmlMessage npcHtmlMessage = new NpcHtmlMessage(0);
			int playerLevel = playerInstance.getLevel();

			if (playerInstance.isCursedWeaponEquiped())
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>Cursed weapon owners are not allowed to participate.</body></html>");
			else if (playerInstance.getKarma() > 0)
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>Chaotic players are not allowed to participate.</body></html>");
			else if (_teams[0].getParticipatedPlayerCount() >= Config.TVT_EVENT_MAX_PLAYERS_IN_TEAMS && _teams[1].getParticipatedPlayerCount() >= Config.TVT_EVENT_MAX_PLAYERS_IN_TEAMS)
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>Sorry the event is full!</body></html>");
			else if (playerLevel < Config.TVT_EVENT_MIN_LVL || playerLevel > Config.TVT_EVENT_MAX_LVL)
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>Only players from level " + Config.TVT_EVENT_MIN_LVL + " to level " + Config.TVT_EVENT_MAX_LVL + " are allowed tro participate.</body></html>");
			else if (_teams[0].getParticipatedPlayerCount() > 19 && _teams[1].getParticipatedPlayerCount() > 19)
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>The event is full! Maximum of " + Config.TVT_EVENT_MAX_PLAYERS_IN_TEAMS + "  player are allowed in one team.</body></html>");
			else if (addParticipant(playerInstance))
				npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>You are on the registration list now.</body></html>");
			else // addParticipant returned false cause playerInstance == null
				return;

			playerInstance.sendPacket(npcHtmlMessage);
		}
		else if (command.equals("tvt_event_remove_participation"))
		{
			removeParticipant(playerInstance.getName());

			NpcHtmlMessage npcHtmlMessage = new NpcHtmlMessage(0);

			npcHtmlMessage.setHtml("<html><head><title>TvT Event</title></head><body>You are not longer on the registration list.</body></html>");
			playerInstance.sendPacket(npcHtmlMessage);
		}
	}

	/**
	 * Called on every onAction in L2PcIstance<br><br>
	 *
	 * @param playerName<br>
	 * @param targetPlayerName<br>
	 * @return boolean<br>
	 */
	public static boolean onAction(String playerName, String targetPlayerName)
	{
		if (!isStarted())
			return true;

		L2PcInstance playerInstance = L2World.getInstance().getPlayer(playerName);

		if (playerInstance == null)
			return false;

		if (playerInstance.isGM())
			return true;

		byte playerTeamId = getParticipantTeamId(playerName);
		byte targetPlayerTeamId = getParticipantTeamId(targetPlayerName);

		if ((playerTeamId != -1 && targetPlayerTeamId == -1) ||
			(playerTeamId == -1 && targetPlayerTeamId != -1))
			return false;

		if (playerTeamId != -1 && targetPlayerTeamId != -1 && playerTeamId == targetPlayerTeamId && !Config.TVT_EVENT_TARGET_TEAM_MEMBERS_ALLOWED)
			return false;

		return true;
	}