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/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2014 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* 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 2 of the License, or
* 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/>.
*/
#include "net/eathena/messageout.h"
#include "net/packetcounters.h"
#include "net/eathena/network.h"
#include "logger.h"
#include <SDL_endian.h>
#include <cstring>
#include <string>
#include "debug.h"
namespace EAthena
{
MessageOut::MessageOut(const int16_t id):
Net::MessageOut(id),
mNetwork(EAthena::Network::instance())
{
mNetwork->fixSendBuffer();
mData = mNetwork->mOutBuffer + static_cast<size_t>(mNetwork->mOutSize);
// +++ can be issue. call to virtual member
writeInt16(id);
}
void MessageOut::expand(const size_t bytes)
{
mNetwork->mOutSize += static_cast<unsigned>(bytes);
PacketCounters::incOutBytes(static_cast<int>(bytes));
}
void MessageOut::writeInt16(const int16_t value)
{
DEBUGLOG("writeInt16: " + toStringPrint(static_cast<int>(value)));
expand(2);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap = SDL_Swap16(value);
memcpy(mData + static_cast<size_t>(mPos), &swap, sizeof(int16_t));
#else
memcpy(mData + static_cast<size_t>(mPos), &value, sizeof(int16_t));
#endif
mPos += 2;
PacketCounters::incOutBytes(2);
}
void MessageOut::writeInt32(const int32_t value)
{
DEBUGLOG("writeInt32: " + toStringPrint(value));
expand(4);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int32_t swap = SDL_Swap32(value);
memcpy(mData + static_cast<size_t>(mPos), &swap, sizeof(int32_t));
#else
memcpy(mData + static_cast<size_t>(mPos), &value, sizeof(int32_t));
#endif
mPos += 4;
PacketCounters::incOutBytes(4);
}
#define LOBYTE(w) (static_cast<unsigned char>(w))
#define HIBYTE(w) (static_cast<unsigned char>(( \
static_cast<uint16_t>(w)) >> 8))
void MessageOut::writeCoordinates(const uint16_t x,
const uint16_t y,
unsigned char direction)
{
DEBUGLOG(strprintf("writeCoordinates: %u,%u %u",
static_cast<unsigned>(x),
static_cast<unsigned>(y),
static_cast<unsigned>(direction)));
char *const data = mData + mPos;
mNetwork->mOutSize += 3;
mPos += 3;
uint16_t temp = x;
temp <<= 6;
data[0] = 0;
data[1] = 1;
data[2] = 2;
data[0] = HIBYTE(temp);
data[1] = static_cast<unsigned char>(temp);
temp = y;
temp <<= 4;
data[1] |= HIBYTE(temp);
data[2] = LOBYTE(temp);
// Translate direction to eAthena format
switch (direction)
{
case 1:
direction = 0;
break;
case 3:
direction = 1;
break;
case 2:
direction = 2;
break;
case 6:
direction = 3;
break;
case 4:
direction = 4;
break;
case 12:
direction = 5;
break;
case 8:
direction = 6;
break;
case 9:
direction = 7;
break;
default:
// OOPSIE! Impossible or unknown
direction = static_cast<unsigned char>(-1);
break;
}
data[2] |= direction;
PacketCounters::incOutBytes(3);
}
} // namespace EAthena
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