BNS_ACT_Plugin.LogWriter.Scan C# (CSharp) Method

        private static void Scan()
        {
            Process process = null;
            IntPtr baseAddress = IntPtr.Zero;
            IntPtr chatlogPointer = IntPtr.Zero;

            DateTime lastPointerUpdate = DateTime.MinValue;

            int lastLine = -1;

            while (!_stopThread)
            {
                System.Threading.Thread.Sleep(10);
                try
                {
                    // update process and pointer every 10 seconds
                    if (process == null || DateTime.Now.Subtract(lastPointerUpdate).TotalSeconds > 10.0)
                    {
                        Process[] processList = Process.GetProcessesByName("Client");
                        if (processList != null && processList.Length > 0)
                            process = processList[0];
                        else
                            continue;

                        // todo: validate process

                        // cache base address if it is missing
                        if (baseAddress == IntPtr.Zero)
                            baseAddress = process.MainModule.BaseAddress;

                        // cache chatlog pointer tree
                        chatlogPointer = ReadIntPtr(process.Handle, IntPtr.Add(baseAddress, chatlogOffset));
                        chatlogPointer = ReadIntPtr(process.Handle, IntPtr.Add(chatlogPointer, 0x50));
                        chatlogPointer = ReadIntPtr(process.Handle, IntPtr.Add(chatlogPointer, 0x520));
                        chatlogPointer = ReadIntPtr(process.Handle, IntPtr.Add(chatlogPointer, 0x4));

                        lastPointerUpdate = DateTime.Now;
                    }
                    if (process == null || baseAddress == IntPtr.Zero || chatlogPointer == IntPtr.Zero)
                        continue;

                    // read in the # of lines - offset 0x9F60
                    int lineCount = (int) ReadUInt32(process.Handle, IntPtr.Add(chatlogPointer, 0x9F60));

                    if (lineCount > 300)
                        throw new ApplicationException("line count too high: [" + lineCount.ToString() + "].");

                    if (lineCount == lastLine)
                        continue;

                    // first scan - do not parse past data since we do not have timestamps
                    if (lastLine == -1)
                    {
                        lastLine = lineCount;
                        continue;
                    }

                    // check for wrap-around
                    if (lineCount < lastLine)
                        lineCount += lastLine;

                    // assume average line length is 50 characters, preallocate stringbuilder
                    StringBuilder buffer = new StringBuilder(50 * (lineCount - lastLine));

                    for (int i = lastLine + 1; i <= lineCount; i++)
                    {
                        // pointer to 'chat log line' structure which has std::string at offset 0x0
                        IntPtr linePointer = IntPtr.Add(chatlogPointer, 0x88 * (i % 300));

                        string chatLine = ReadStlString(process.Handle, linePointer);

                        // offset 0x74 is chat code
                        uint chatCode = ReadUInt32(process.Handle, IntPtr.Add(linePointer, 0x74));

                        //for (int j = 0; j < 0x80; j+=4)
                        //buffer.Append(BitConverter.ToUInt32(header, j).ToString("X8") + "|");
                        buffer.Append(DateTime.Now.ToString("HH:mm:ss.fff", System.Globalization.CultureInfo.InvariantCulture) + "|");
                        buffer.Append(chatCode.ToString("X2") + "|");
                        buffer.AppendLine(chatLine);
                    }

                    File.AppendAllText(_logFileName, buffer.ToString());

                    lastLine = lineCount % 300;
                }
                catch (Exception ex)
                {
                    File.AppendAllText(_logFileName,
                        DateTime.Now.ToString("HH:mm:ss.fff", System.Globalization.CultureInfo.InvariantCulture) +
                        "|Error [BNS_Log.Scan] " + ex.ToString().Replace(Environment.NewLine, " "));

                    // do not exit scan thread, but pause so that the errors dont pile up.
                    System.Threading.Thread.Sleep(1000);
                }
            }
        }