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/*
* The Mana World
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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 2 of the License, or
* any later version.
*
* The Mana World 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 The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#ifndef _TMW_MESSAGEIN_
#define _TMW_MESSAGEIN_
#include <string>
/**
* Used for parsing an incoming message.
*/
class MessageIn
{
public:
/**
* Constructor.
*/
MessageIn(const char *data, unsigned int length);
/**
* Returns the message ID.
*/
short
getId() { return mId; }
/**
* Returns the message length.
*/
unsigned int
getLength() { return mLength; }
char readByte(); /**< Reads a byte. */
short readShort(); /**< Reads a short. */
long readLong(); /**< Reads a long. */
/**
* Reads a special 3 byte block used by eAthena, containing x and y
* coordinates and direction.
*/
void
readCoordinates(unsigned short &x,
unsigned short &y,
unsigned char &direction);
/**
* Reads a special 5 byte block used by eAthena, containing a source
* and destination coordinate pair.
*/
void
readCoordinatePair(unsigned short &srcX, unsigned short &srcY,
unsigned short &dstX, unsigned short &dstY);
/**
* Skips a given number of bytes.
*/
void
skip(unsigned int length);
/**
* Reads a string. If a length is not given (-1), it is assumed
* that the length of the string is stored in a short at the
* start of the string.
*/
std::string
readString(int length = -1);
private:
const char* mData; /**< The message data. */
unsigned int mLength; /**< The length of the data. */
unsigned int mPos; /**< The position in the data. */
short mId; /**< The message ID. */
};
#endif
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