// serialization functions
public void Serialize(BitStream message, UserCommand?old)
{
if (old == null)
{
message.WriteUInt32(ServerTime);
message.WriteInt16((short)Buttons);
}
else
{
var oldCommand = old.Value;
if ((ServerTime - oldCommand.ServerTime) < 255)
{
message.WriteBool(true);
message.WriteByte((byte)(ServerTime - oldCommand.ServerTime));
}
else
{
message.WriteBool(false);
message.WriteUInt32(ServerTime);
}
message.WriteDeltaInt16((short)Buttons, (short)oldCommand.Buttons);
}
}
