PlayersHandler.java

/*
 * This file is part of the OdinMS Maple Story Server Copyright (C) 2008 ~ 2010
 * Patrick Huy <patrick.huy@frz.cc> Matthias Butz <matze@odinms.de> Jan
 * Christian Meyer <vimes@odinms.de>
 * 
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation. You may not use, modify or distribute this
 * program under any other version of the GNU Affero General Public License.
 * 
 * This program 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 Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package javastory.channel.handling;

import javastory.channel.ChannelCharacter;
import javastory.channel.ChannelClient;
import javastory.channel.anticheat.CheatingOffense;
import javastory.channel.maps.Door;
import javastory.channel.maps.GameMapObject;
import javastory.channel.maps.Reactor;
import javastory.channel.server.InventoryManipulator;
import javastory.game.Item;
import javastory.game.Stat;
import javastory.game.data.ItemInfoProvider;
import javastory.io.PacketFormatException;
import javastory.io.PacketReader;
import javastory.server.FameLog;
import javastory.tools.FameResponse;
import javastory.tools.packets.ChannelPackets;

public final class PlayersHandler {

	private PlayersHandler() {
	}

	public static void handleNoteAction(final PacketReader reader, final ChannelCharacter chr) throws PacketFormatException {
		final byte type = reader.readByte();

		switch (type) {
		case 1:
			final byte num = reader.readByte();
			reader.skip(2);

			for (int i = 0; i < num; i++) {
				final int id = reader.readInt();
				reader.skip(1);
				chr.deleteNote(id);
			}
			break;
		default:
			System.out.println("Unhandled note action, " + type + "");
		}
	}

	public static void handleGiveFame(final PacketReader reader, final ChannelClient c, final ChannelCharacter famer) throws PacketFormatException {
		final int receiverId = reader.readInt();
		final boolean isIncrease = reader.readBoolean();

		final int change = isIncrease ? 1 : -1;
		final ChannelCharacter receiver = (ChannelCharacter) famer.getMap().getMapObject(receiverId);

		if (receiver == famer) {
			famer.getCheatTracker().registerOffense(CheatingOffense.FAMING_SELF);
			return;
		}

		if (famer.getLevel() < 15) {
			famer.getCheatTracker().registerOffense(CheatingOffense.FAMING_UNDER_15);
			return;
		}

		FameResponse responseCode = FameResponse.SUCCESS;
		if (FameLog.hasFamedRecently(famer.getId(), receiverId)) {
			responseCode = FameResponse.ONCE_A_MONTH;
		} else if (famer.hasFamedToday()) {
			responseCode = FameResponse.ONCE_A_DAY;
		}

		if (responseCode != FameResponse.SUCCESS) {
			c.write(ChannelPackets.giveFameErrorResponse(responseCode));
			return;
		}

		if (Math.abs(receiver.getFame() + change) <= 30000) {
			receiver.addFame(change);
			receiver.updateSingleStat(Stat.FAME, receiver.getFame());

			final long timestamp = FameLog.addEntry(famer.getId(), receiverId);
			famer.setLastFameTime(timestamp);

			c.write(ChannelPackets.giveFameResponse(isIncrease, receiver.getName(), receiver.getFame()));
			receiver.getClient().write(ChannelPackets.receiveFame(isIncrease, famer.getName()));
		}
	}

	public static void handleUseDoor(final PacketReader reader, final ChannelCharacter chr) throws PacketFormatException {
		final int oid = reader.readInt();
		final boolean mode = reader.readByte() == 0; // specifies if backwarp or not, 1 town to target, 0 target to town

		for (final GameMapObject obj : chr.getMap().getAllDoor()) {
			final Door door = (Door) obj;
			if (door.getOwner().getId() == oid) {
				door.warp(chr, mode);
				break;
			}
		}
	}

	public static void handleTransformPlayer(final PacketReader reader, final ChannelClient c, final ChannelCharacter chr) throws PacketFormatException {
		// D9 A4 FD 00
		// 11 00
		// A0 C0 21 00
		// 07 00 64 66 62 64 66 62 64
		reader.skip(4); // Timestamp
		final byte slot = (byte) reader.readShort();
		final int itemId = reader.readInt();
		final String target = reader.readLengthPrefixedString().toLowerCase();

		final Item toUse = c.getPlayer().getUseInventory().getItem(slot);

		if (toUse == null || toUse.getQuantity() < 1 || toUse.getItemId() != itemId) {
			c.write(ChannelPackets.enableActions());
			return;
		}
		switch (itemId) {
		case 2212000:
			for (final ChannelCharacter search_chr : c.getPlayer().getMap().getCharacters()) {
				if (search_chr.getName().toLowerCase().equals(target)) {
					ItemInfoProvider.getInstance().getItemEffect(2210023).applyTo(search_chr);
					search_chr.sendNotice(6, chr.getName() + " has played a prank on you!");
					InventoryManipulator.removeFromSlot(c, chr.getUseInventory(), slot, (short) 1, false);
				}
			}
			break;
		}
	}

	public static void handleHitReactor(final PacketReader reader, final ChannelClient c) throws PacketFormatException {
		final int oid = reader.readInt();
		final int charPos = reader.readInt();
		final short stance = reader.readShort();
		final Reactor reactor = c.getPlayer().getMap().getReactorByOid(oid);

		if (reactor == null || !reactor.isAlive()) {
			return;
		}
		reactor.hitReactor(charPos, stance, c);
	}
}