From 3b537e109df901df3da4c706f827c8d3d39a7238 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 24 Jun 2012 19:34:08 +0300
Subject: Add basic support for eathena stable.

Can register, create char, connect to map server and get map info.
---
 src/net/eathena/messageout.cpp | 147 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 src/net/eathena/messageout.cpp

(limited to 'src/net/eathena/messageout.cpp')

diff --git a/src/net/eathena/messageout.cpp b/src/net/eathena/messageout.cpp
new file mode 100644
index 000000000..795807a3f
--- /dev/null
+++ b/src/net/eathena/messageout.cpp
@@ -0,0 +1,147 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2012  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 "utils/stringutils.h"
+
+#include <SDL.h>
+#include <SDL_endian.h>
+
+#include <cstring>
+#include <string>
+
+#include "debug.h"
+
+namespace EAthena
+{
+
+MessageOut::MessageOut(short id):
+    Net::MessageOut(id)
+{
+    mNetwork = EAthena::Network::instance();
+    mData = mNetwork->mOutBuffer + mNetwork->mOutSize;
+
+    writeInt16(id);
+}
+
+void MessageOut::expand(size_t bytes)
+{
+    mNetwork->mOutSize += static_cast<unsigned>(bytes);
+    PacketCounters::incOutBytes(static_cast<int>(bytes));
+}
+
+void MessageOut::writeInt16(int16_t value)
+{
+    DEBUGLOG("writeInt16: " + toString(static_cast<int>(value)));
+    expand(2);
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+    int16_t swap = SDL_Swap16(value);
+    memcpy(mData + mPos, &swap, sizeof(int16_t));
+#else
+    memcpy(mData + mPos, &value, sizeof(int16_t));
+#endif
+    mPos += 2;
+    PacketCounters::incOutBytes(2);
+}
+
+void MessageOut::writeInt32(int32_t value)
+{
+    DEBUGLOG("writeInt32: " + toString(value));
+    expand(4);
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+    int32_t swap = SDL_Swap32(value);
+    memcpy(mData + mPos, &swap, sizeof(int32_t));
+#else
+    memcpy(mData + 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<unsigned short>(w)) >> 8))
+
+void MessageOut::writeCoordinates(unsigned short x, unsigned short y,
+                                  unsigned char direction)
+{
+    DEBUGLOG(strprintf("writeCoordinates: %u,%u %u", x, y, direction));
+    char *data = mData + mPos;
+    mNetwork->mOutSize += 3;
+    mPos += 3;
+
+    short temp;
+    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);
+    }
+    data[2] |= direction;
+    PacketCounters::incOutBytes(3);
+}
+
+} // namespace EAthena
-- 
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