Subversion Repositories Games.Chess Giants

// dialog_newgame.cpp

#include "../common.h"

// dialog template

#define THIS_DIALOG DIALOG_NEWGAME

// game type definitons

#define GAMETYPE_ONLINE 1

#define GAMETYPE_COMPUTER 2

#define GAMETYPE_TWOPLAYERS 3

// global variables used in this module only

static int newgame_type = 0;

static bool is_internet_available = false;

static bool is_chessserver_reachable = false;

// prototypes of local functions

static void StartThread_ThisDialog (void *thread_parms);

static int CALLBACK DialogProc_ThisDialog (HWND hWnd, unsigned int message, WPARAM wParam, LPARAM lParam);

void DialogBox_NewGame (void)

{

   // helper function to fire up the modeless dialog box

   // HACK to prevent the player to click and block the view angles while the slide-in is not finished

   command_ignoretime = current_time + 2.0f; // allow 2 seconds

   is_dialogbox_displayed = true;

   _beginthread (StartThread_ThisDialog, 0, NULL); // so fire up a new one

   the_scene.gui.want_spinwheel = true; // start spinning wheel

   return; // return as soon as the thread is fired up

}

void DialogBox_NewGame_Validated (void)

{

   // callback function called by the main game thread when the dialog box is validated

   // remember this callback is no longer to be called

   is_dialogbox_newgame_validated = false;

   Scene_Shutdown (&the_scene); // release scene

   Board_Shutdown (&the_board); // release chess game

   if (newgame_type == GAMETYPE_ONLINE)

   {

      Board_Init (&the_board, PLAYER_HUMAN, PLAYER_INTERNET, L"standard", FENSTARTUP_STANDARDCHESS); // we want an online opponent

      the_board.game_state = STATE_UNKNOWN; // game does NOT start immediately

   }

   else if (newgame_type == GAMETYPE_COMPUTER)

   {

      Board_Init (&the_board, PLAYER_HUMAN, PLAYER_COMPUTER, L"standard", FENSTARTUP_STANDARDCHESS); // we want a computer opponent

      the_board.game_state = STATE_PLAYING; // game starts immediately

   }

   else

   {

      Board_Init (&the_board, PLAYER_HUMAN, PLAYER_HUMAN, L"standard", FENSTARTUP_STANDARDCHESS); // we want a human opponent

      the_board.game_state = STATE_PLAYING; // game starts immediately

      DialogBox_RenameSides (); // pop up the opponents naming dialog box

   }

   Scene_Init (&the_scene, &the_board); // initialize scene

   SetWindowText (hMainWnd, PROGRAM_NAME); // update window title

   the_board.reevaluate = true; // evaluate the new board

   the_scene.update = true; // update scene

   return; // finished, a new game of the chosen type is being fired up

}

static void StartThread_TestConnectionInBackground (void *thread_parms)

{

   // this function runs in a separate thread and tests the connectivity to the chess server in the background

   char icmp_send_buffer[32] = "Chess Giants connectivity test";

   void *icmp_recv_buffer[sizeof (ICMP_ECHO_REPLY) + sizeof (icmp_send_buffer)];

   char ascii_hostname[256];

   struct hostent *hostinfo;

   uint32_t server_ipaddr;

   HANDLE icmp_descriptor;

   // since this is a synchronous operation, it's a good idea to do this on this separate thread

   ConvertTo7BitASCII (ascii_hostname, sizeof (ascii_hostname), options.network.server_address);

   if ((hostinfo = gethostbyname (ascii_hostname)) != NULL)

   {

      // DO NOT CONNECT TO THE SERVER AND DISCONNECT IMMEDIATELY ELSE IT WILL RESULT IN AN IP BAN. Use an ICMP ping instead.

      server_ipaddr = inet_addr (inet_ntoa (*(struct in_addr *) hostinfo->h_addr_list[0]));

      icmp_descriptor = IcmpCreateFile ();

      if ((icmp_descriptor != INVALID_HANDLE_VALUE)

          && (IcmpSendEcho (icmp_descriptor, server_ipaddr, icmp_send_buffer, sizeof (icmp_send_buffer), NULL, icmp_recv_buffer, sizeof (icmp_recv_buffer), 5000) != 0)

          && (((ICMP_ECHO_REPLY *) icmp_recv_buffer)->Status == 0))

         is_chessserver_reachable = true; // on success, remember we could reach the chess server

   }

   return; // _endthread() implied

}

static void StartThread_ThisDialog (void *thread_parms)

{

   // this function runs in a separate thread, for that's the only way (seemingly)

   // to implement a non-modal message box using the Common Controls library.

   is_internet_available = false; // assume Internet doesn't work until told otherwise

   is_chessserver_reachable = false;

   // start the thread that will tell whether Internet works

   _beginthread (StartThread_TestConnectionInBackground, 0, NULL); // so fire up a new one

   // display the dialog box

   newgame_type = DialogBox (hAppInstance, MAKEINTRESOURCE (THIS_DIALOG), hMainWnd, DialogProc_ThisDialog);

   if (newgame_type > 0)

      is_dialogbox_newgame_validated = true;

   is_dialogbox_displayed = false;

   the_board.reevaluate = true; // refresh the GUI buttons if needed

   return; // _endthread() implied

}

static int CALLBACK DialogProc_ThisDialog (HWND hWnd, unsigned int message, WPARAM wParam, LPARAM lParam)

{

   // message handler for the dialog box

   unsigned short wParam_hiword;

   unsigned short wParam_loword;

   // filter out the commonly used message values

   wParam_hiword = HIWORD (wParam);

   wParam_loword = LOWORD (wParam);

   // any message will do (mouse move, etc.) -- is the chess server reachable ?

   if (!is_internet_available && is_chessserver_reachable)

   {

      is_internet_available = true; // remember we no longer need to look after that (FLAG THIS BEFORE ANY SendMessage() HAPPENS!)

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_ONLINEDESCRIPTION), LOCALIZE (L"NewGame_OnlineDescription"));

      EnableWindow (GetDlgItem (hWnd, BUTTON_NEWGAME_ONLINE), true);

      EnableWindow (GetDlgItem (hWnd, STATICTEXT_NEWGAME_ONLINEDESCRIPTION), true);

   }

   // have we just fired up this window ?

   if (message == WM_INITDIALOG)

   {

      // center the window

      CenterWindow (hWnd, hMainWnd);

      // set dialog icons (small one for title bar & big one for task manager)

      SendMessage (hWnd, WM_SETICON, ICON_SMALL, (LPARAM) LoadIcon (hAppInstance, MAKEINTRESOURCE (ICON_MAIN)));

      SendMessage (hWnd, WM_SETICON, ICON_BIG, (LPARAM) LoadIcon (hAppInstance, MAKEINTRESOURCE (ICON_MAIN)));

      // set window title and control texts

      SetWindowText (hWnd, LOCALIZE (L"NewGame_Title"));

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_QUESTION), LOCALIZE (L"NewGame_Question"));

      // if computer is connected to a network, enable online mode, else don't.

      SetWindowText (GetDlgItem (hWnd, BUTTON_NEWGAME_ONLINE), LOCALIZE (L"NewGame_Online"));

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_ONLINEDESCRIPTION), LOCALIZE (L"Error_NetworkInitializationFailed"));

      EnableWindow (GetDlgItem (hWnd, BUTTON_NEWGAME_ONLINE), false);

      EnableWindow (GetDlgItem (hWnd, STATICTEXT_NEWGAME_ONLINEDESCRIPTION), false);

      SetWindowText (GetDlgItem (hWnd, BUTTON_NEWGAME_COMPUTER), LOCALIZE (L"NewGame_Computer"));

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_COMPUTERDESCRIPTION), LOCALIZE (L"NewGame_ComputerDescription"));

      SetWindowText (GetDlgItem (hWnd, BUTTON_NEWGAME_HUMAN), LOCALIZE (L"NewGame_Human"));

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_HUMANDESCRIPTION), LOCALIZE (L"NewGame_HumanDescription"));

      Static_SetText (GetDlgItem (hWnd, STATICTEXT_NEWGAME_STATUSBAR), LOCALIZE (L"NewGame_StatusBar"));

      // convert the status bar message to a hyperlink

      ConvertStaticToHyperlink (GetDlgItem (hWnd, STATICTEXT_NEWGAME_STATUSBAR));

      // and stop the center message display

      the_scene.gui.want_spinwheel = false;

   }

   // else did we click the close button on the title bar or hit the escape key ?

   else if (message == WM_CLOSE)

      EndDialog (hWnd, 0); // close the dialog box

   // else did we take action on one of the controls ?

   else if (message == WM_COMMAND)

   {

      // did we cancel the dialog box ? (IDCANCEL is a system-wide dialog box handler value, that catches the ESC key)

      if (wParam_loword == IDCANCEL)

         EndDialog (hWnd, 0); // close the dialog box

      // else was it the new online game button ?

      else if (wParam_loword == BUTTON_NEWGAME_ONLINE)

         EndDialog (hWnd, GAMETYPE_ONLINE); // close the dialog box and return a "new online game" code

      // else was it the new game versus computer button ?

      else if (wParam_loword == BUTTON_NEWGAME_COMPUTER)

         EndDialog (hWnd, GAMETYPE_COMPUTER); // close the dialog box and return a "new game versus computer" code

      // else was it the new game versus human button ?

      else if (wParam_loword == BUTTON_NEWGAME_HUMAN)

         EndDialog (hWnd, GAMETYPE_TWOPLAYERS); // close the dialog box and return a "new game versus human" code

      // else was it the status bar hyperlink ?

      else if (wParam_loword == STATICTEXT_NEWGAME_STATUSBAR)

         ShellExecute (NULL, L"open", PROGRAM_URL, NULL, NULL, SW_MAXIMIZE); // open the donation page in the default browser, maximized

   }

   // call the default dialog message processing function to keep things going

   return (false);

}