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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) 2011-2018 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/tmwa/messageout.h"
#include "net/packetcounters.h"
#include "net/tmwa/network.h"
#include "logger.h"
#include "debug.h"
#ifndef SDL_BIG_ENDIAN
#error missing SDL_endian.h
#endif // SDL_BYTEORDER
namespace TmwAthena
{
MessageOut::MessageOut(const int16_t id) :
Net::MessageOut(id),
mNetwork(TmwAthena::Network::instance())
{
mNetwork->fixSendBuffer();
mData = mNetwork->mOutBuffer + CAST_SIZE(mNetwork->mOutSize);
}
MessageOut::~MessageOut()
{
DEBUGLOG2("writeEnd: ", mPos, "position after end of packet");
}
void MessageOut::expand(const size_t bytes) const
{
mNetwork->mOutSize += CAST_U32(bytes);
PacketCounters::incOutBytes(CAST_S32(bytes));
}
void MessageOut::writeInt16(const int16_t value, const char *const str)
{
DEBUGLOG2("writeInt16: " + toStringPrint(CAST_U32(
CAST_U16(value))),
mPos, str);
expand(2);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap = SDL_Swap16(value);
memcpy(mData + CAST_SIZE(mPos), &swap, sizeof(int16_t));
#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
memcpy(mData + CAST_SIZE(mPos), &value, sizeof(int16_t));
#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
mPos += 2;
}
void MessageOut::writeInt32(const int32_t value, const char *const str)
{
DEBUGLOG2("writeInt32: " + toStringPrint(CAST_U32(value)),
mPos, str);
expand(4);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int32_t swap = SDL_Swap32(value);
memcpy(mData + CAST_SIZE(mPos), &swap, sizeof(int32_t));
#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
memcpy(mData + CAST_SIZE(mPos), &value, sizeof(int32_t));
#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
mPos += 4;
}
void MessageOut::writeBeingId(const BeingId value, const char *const str)
{
writeInt32(toInt(value, int32_t), str);
}
#define LOBYTE(w) (CAST_U8(w))
#define HIBYTE(w) (CAST_U8(( \
CAST_U16(w)) >> 8U))
void MessageOut::writeCoordinates(const uint16_t x,
const uint16_t y,
unsigned char direction,
const char *const str)
{
DEBUGLOG2(strprintf("writeCoordinates: %u,%u %u",
CAST_U32(x), static_cast<unsigned>(y),
CAST_U32(direction)), mPos, str);
unsigned char *const data = reinterpret_cast<unsigned char*>(mData)
+ CAST_SIZE(mPos);
expand(3);
mPos += 3;
uint16_t temp = x;
temp <<= 6;
data[0] = 0;
data[1] = 1;
data[2] = 2;
data[0] = HIBYTE(temp);
data[1] = CAST_U8(temp);
temp = y;
temp <<= 4;
data[1] |= HIBYTE(temp);
data[2] = LOBYTE(temp);
direction = toServerDirection(direction);
data[2] |= direction;
}
} // namespace TmwAthena
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