/***********************************************************
* WindowMud - Window Mud Server                            *
* File:   BigDog.cpp                                       *
* Usage:  Game loop                                        *
*                                                          *
* No warranty is given or implied.                         *
* There is no license associated with this code.           *
* There are no restrictions on the use of this code.       *
* This code may be used in any way the reader wishes.      *
* No credit or credits are given and none are required.    *
* The reader may take this code and claim they wrote it.   *
************************************************************/

/***********************************************************
* Includes                                                 *
************************************************************/

#include "stdafx.h"         // precompiled headers
#include "BigDog.h"
// Server
#include "Communication.h"
#include "Descriptor.h"
#include "Dnode.h"
#include "Log.h"
#include "Utility.h"

/***********************************************************
* Globals                                                  *
************************************************************/

extern CString HomeDir;

CString   ErrorMsg;
bool      StateConnections;
bool      StateRunning;
bool      StateStopping;
bool      WinSockCleanUp;

/***********************************************************
* BigDog - The dog, the whole dog, and nothing but the dog *
************************************************************/

void BigDog()
{
  CString      GoGoGoFileName;
  CFileStatus  FileStatus;
  CString      LogBuf;
  CString      StopItFileName;

  if (_chdir(HomeDir))
  { // Change directory failed
    ErrorMsg = "BigDog - Change directory to HomeDir failed";
    Utility::BlowUp();
  }
  // Set Go Stop, force go status
  StopItFileName  = CONTROL_DIR;
  StopItFileName += "StopIt";
  GoGoGoFileName  = CONTROL_DIR;
  GoGoGoFileName += "GoGoGo";
  if (CFile::GetStatus(StopItFileName, FileStatus))
  { // If StopIt file exists, Rename it to GoGoGo
    CFile::Rename(StopItFileName, GoGoGoFileName);
  }
  // Log game startup
  Log::OpenLogFile();
  LogBuf = "WindowMud version 0.0 has started";
  Log::LogIt(LogBuf);
  LogBuf  = "Home directory is ";
  LogBuf += HomeDir;
  Log::LogIt(LogBuf);
  // Initialize
  StateConnections = true;
  StateRunning     = true;
  StateStopping    = false;
  Communication::SockOpenPort(PORT_NBR);
  Descriptor::InitDescriptor();
  // Game loop
  while (StateRunning)
  { // Game runs until it is stopped
    Sleep(MILLI_SECONDS_TO_SLEEP);
    if (!StateStopping)
    { // Game is not stopping, but should it be?
      if (CFile::GetStatus(StopItFileName, FileStatus))
      { // StopIt file was found, Stop the game
        StateStopping = true;
        LogBuf = "Game is stopping";
        Log::LogIt(LogBuf);
      }
    }
    if (!StateStopping)
    { // Game is not stopping, check for new connections
      Communication::SockCheckForNewConnections();
      if (StateConnections && Dnode::GetCount() == 1)
      { // No players connected
        LogBuf = "No Connections - going to sleep";
        Log::LogIt(LogBuf);
        StateConnections = false;
      }
    }
    if (StateConnections)
    { // One or more players are connected
      Communication::SockRecv();
    }
    else
    { // No connections
      if (StateStopping)
      { // Game is stopping
        StateRunning = false;
      }
    }
  }
  // Game has stopped so clean up
  Descriptor::ClearDescriptor();
  Communication::SockClosePort(PORT_NBR);
  LogBuf = "WindowMud has stopped";
  Log::LogIt(LogBuf);
  Log::CloseLogFile();
}