/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2015 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, const char *const str) : 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, str); } 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, const char *const str) { 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 DEBUGLOG2("writeInt16: " + toStringPrint(static_cast<unsigned int>( static_cast<uint16_t>(value))), mPos, str); mPos += 2; PacketCounters::incOutBytes(2); } void MessageOut::writeInt32(const int32_t value, const char *const str) { DEBUGLOG2("writeInt32: " + toStringPrint(static_cast<unsigned int>(value)), mPos, str); 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, const char *const str) { DEBUGLOG2(strprintf("writeCoordinates: %u,%u %u", static_cast<unsigned>(x), static_cast<unsigned>(y), static_cast<unsigned>(direction)), mPos, str); unsigned char *const data = reinterpret_cast<unsigned char*>(mData) + static_cast<size_t>(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