public static void LoadHandlers()
{
var types = Assembly.GetExecutingAssembly().GetTypes();
var identifiedClientBuilds = new List <uint>();
_serverPacketHandlers = new HandlerMap();
_clientPacketHandlers = new HandlerMap();
_serverOpcodeMap = new OpcodeMap();
_clientOpcodeMap = new OpcodeMap();
foreach (var type in types)
{
if (!type.IsAbstract ||
!type.IsPublic)
{
continue;
}
// Require each handler class to define the client build.
var classAttributes = (ClientBuildAttribute[])type.GetCustomAttributes(typeof(ClientBuildAttribute), false);
if (classAttributes.Length == 0)
{
continue;
}
var clientBuild = classAttributes[0].ClientBuild;
var methods = type.GetMethods();
foreach (var method in methods)
{
if (!method.IsPublic)
{
continue;
}
var parameters = method.GetParameters();
if (parameters.Length == 0 ||
parameters[0].ParameterType != typeof(Packet))
{
continue;
}
var attributes = (ParserAttribute[])method.GetCustomAttributes(typeof(ParserAttribute), false);
if (attributes.Length == 0)
{
continue;
}
var attribute = attributes[0];
if (attribute.OpcodeValue == 0)
{
continue;
}
var key = CreateKey(clientBuild, attribute.OpcodeValue);
var handler = (PacketHandler)Delegate.CreateDelegate(typeof(PacketHandler), method);
OpcodeMap opcodeMap;
HandlerMap handlerMap;
if (attribute.Direction == Direction.ClientToServer)
{
opcodeMap = _clientOpcodeMap;
handlerMap = _clientPacketHandlers;
}
else
{
opcodeMap = _serverOpcodeMap;
handlerMap = _serverPacketHandlers;
}
if (handlerMap.ContainsKey(key))
{
Debug.Print("Handler already found for opcode 0x{0:X4} ({1}) of client build {2}.",
attribute.OpcodeValue, attribute.Opcode, clientBuild);
continue;
}
if (!identifiedClientBuilds.Contains(clientBuild))
{
identifiedClientBuilds.Add(clientBuild);
}
handlerMap[key] = handler;
opcodeMap[key] = attribute.Opcode;
Debug.Print("Handler added for opcode 0x{0:X4} ({1}) of client build {2}.",
attribute.OpcodeValue, attribute.Opcode, clientBuild);
}
}
// Now look through the builds we've discovered and identify their versions.
foreach (var clientBuild in identifiedClientBuilds)
{
ClientVersion.AddAvailableVersion(clientBuild);
}
}