Network Layer 7 rework (Packet handling)

* Move networkcode to a dedicated directory
* Rename clientserver.h to network/networkprotocol.h (Better name) and sanitize some includes
* Create object NetworkPacket
  * It stores command (opcode) and data separated
  * It also stores peer_id
  * Data reading can be done by using a streaming interface
* Change packet routing analysis
  * Remove old conditional analysis
  * Now uses function pointed analysis and add connection state ({Client,Server}::handlers)
  * Connection state permit to categorize condition to handle before analyze packets
  * Create a handler for depreciated messages, instead of duplicating code

1 files changed, 43 insertions, 0 deletions

diff --git a/src/network/clientopcodes.h b/src/network/clientopcodes.h
new file mode 100644
index 000000000..6755342a3
--- /dev/null
+++ b/src/network/clientopcodes.h
@@ -0,0 +1,43 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef CLIENTOPCODES_HEADER
+#define CLIENTOPCODES_HEADER
+
+#include "client.h"
+#include "networkprotocol.h"
+#include "toclientpacket.h"
+
+enum ToClientConnectionState {
+	TOCLIENT_STATE_NOT_CONNECTED,
+	TOCLIENT_STATE_CONNECTED,
+	TOCLIENT_STATE_ALL,
+};
+
+struct ToClientCommandHandler
+{
+    char const* name;
+    ToClientConnectionState state;
+    void (Client::*handler)(ToClientPacket* pkt);
+};
+
+extern const ToClientCommandHandler toClientCommandTable[TOCLIENT_NUM_MSG_TYPES];
+
+#endif