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/*
* The Mana World Server
* 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
*/
#ifndef _TMWSERV_MESSAGEIN_H_
#define _TMWSERV_MESSAGEIN_H_
#include <string>
#include <SDL_types.h>
/**
* Used for parsing an incoming message.
*
* \ingroup Network
*/
class MessageIn
{
public:
/**
* Constructor.
*/
MessageIn(const char *data, unsigned int length);
int getId() { return mId; } /**< Returns the message ID. */
int readInt8(); /**< Reads a byte. */
int readInt16(); /**< Reads a short. */
int readInt32(); /**< Reads a long. */
/**
* Reads a 3-byte block containing tile-based coordinates.
*/
void readCoordinates(Uint16 &x, Uint16 &y);
/**
* 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);
/**
* Returns the message length.
*/
unsigned int
getLength() const { return mLength; }
/**
* Returns the length of unread data.
*/
unsigned int
getUnreadLength() const { return mLength - mPos; }
private:
const char* mData; /**< The message data. */
unsigned int mLength; /**< The length of the data. */
unsigned short mId; /**< The message ID. */
/**
* Actual position in the packet. From 0 to packet->length.
* A value bigger than packet->length means EOP was reached when
* reading it.
*/
unsigned int mPos;
};
#endif
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