/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.network.clientpackets;

import java.nio.BufferUnderflowException;

import net.sf.l2j.Config;
import net.sf.l2j.gameserver.ai.CtrlIntention;
import net.sf.l2j.gameserver.model.L2CharPosition;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.network.SystemMessageId;
import net.sf.l2j.gameserver.network.serverpackets.ActionFailed;
import net.sf.l2j.gameserver.network.serverpackets.EnchantResult;
import net.sf.l2j.gameserver.network.serverpackets.StopMove;
import net.sf.l2j.gameserver.util.Util;

public class MoveBackwardToLocation extends L2GameClientPacket
{
	// cdddddd
	private int _targetX;
	private int _targetY;
	private int _targetZ;
	private int _originX;
	private int _originY;
	private int _originZ;
	private int _moveMovement;
	
	@Override
	protected void readImpl()
	{
		_targetX = readD();
		_targetY = readD();
		_targetZ = readD();
		_originX = readD();
		_originY = readD();
		_originZ = readD();
		
		try
		{
			_moveMovement = readD(); // is 0 if cursor keys are used 1 if mouse is used
		}
		catch (BufferUnderflowException e)
		{
			if (Config.L2WALKER_PROTECTION)
			{
				L2PcInstance activeChar = getClient().getActiveChar();
				Util.handleIllegalPlayerAction(activeChar, activeChar.getName() + " is trying to use L2Walker.", Config.DEFAULT_PUNISH);
			}
		}
	}
	
	@Override
	protected void runImpl()
	{
		final L2PcInstance activeChar = getClient().getActiveChar();
		if (activeChar == null)
			return;
		
		if (activeChar.isOutOfControl() || (_moveMovement == 0 && Config.GEODATA < 1)) // cursor movement without geodata is disabled
		{
			activeChar.sendPacket(ActionFailed.STATIC_PACKET);
			return;
		}
		
		if (activeChar.getActiveEnchantItem() != null)
		{
			activeChar.setActiveEnchantItem(null);
			activeChar.sendPacket(EnchantResult.CANCELLED);
			activeChar.sendPacket(SystemMessageId.ENCHANT_SCROLL_CANCELLED);
		}
		
		if (_targetX == _originX && _targetY == _originY && _targetZ == _originZ)
		{
			activeChar.sendPacket(new StopMove(activeChar));
			return;
		}
		
		// Correcting targetZ from floor level to head level
		_targetZ += activeChar.getTemplate().getCollisionHeight();
		
		if (activeChar.getTeleMode() > 0)
		{
			if (activeChar.getTeleMode() == 1)
				activeChar.setTeleMode(0);
			
			activeChar.sendPacket(ActionFailed.STATIC_PACKET);
			activeChar.teleToLocation(_targetX, _targetY, _targetZ, 0);
			return;
		}
		
		double dx = _targetX - _originX;
		double dy = _targetY - _originY;
		
		if ((dx * dx + dy * dy) > 98010000) // 9900*9900
		{
			activeChar.sendPacket(ActionFailed.STATIC_PACKET);
			return;
		}
		activeChar.getAI().setIntention(CtrlIntention.MOVE_TO, new L2CharPosition(_targetX, _targetY, _targetZ, 0));
	}
}