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swad-core/swad_game.c

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// swad_game.c: games using remote control
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2019 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*****************************************************************************/
/********************************* Headers ***********************************/
/*****************************************************************************/
#define _GNU_SOURCE // For asprintf
#include <linux/limits.h> // For PATH_MAX
#include <linux/stddef.h> // For NULL
#include <stdio.h> // For asprintf
#include <stdlib.h> // For calloc
#include <string.h> // For string functions
#include "swad_database.h"
#include "swad_form.h"
#include "swad_game.h"
#include "swad_global.h"
#include "swad_HTML.h"
#include "swad_match.h"
#include "swad_match_result.h"
#include "swad_pagination.h"
#include "swad_role.h"
#include "swad_test.h"
/*****************************************************************************/
/************** External global variables from others modules ****************/
/*****************************************************************************/
extern struct Globals Gbl;
/*****************************************************************************/
/***************************** Private constants *****************************/
/*****************************************************************************/
#define Gam_MAX_CHARS_ANSWER (1024 - 1) // 1023
#define Gam_MAX_BYTES_ANSWER ((Gam_MAX_CHARS_ANSWER + 1) * Str_MAX_BYTES_PER_CHAR - 1) // 16383
#define Gam_MAX_ANSWERS_PER_QUESTION 10
#define Gam_MAX_SELECTED_QUESTIONS 1000
#define Gam_MAX_BYTES_LIST_SELECTED_QUESTIONS (Gam_MAX_SELECTED_QUESTIONS * (Cns_MAX_DECIMAL_DIGITS_LONG + 1))
/*****************************************************************************/
/******************************* Private types *******************************/
/*****************************************************************************/
/*****************************************************************************/
/***************************** Private variables *****************************/
/*****************************************************************************/
long Gam_CurrentGamCod = -1L; // Used as parameter in contextual links
unsigned Gam_CurrentQstInd = 0; // Used as parameter in contextual links
/*****************************************************************************/
/***************************** Private prototypes ****************************/
/*****************************************************************************/
static void Gam_ListAllGames (void);
static bool Gam_CheckIfICanEditGames (void);
static void Gam_PutIconsListGames (void);
static void Gam_PutIconToCreateNewGame (void);
static void Gam_PutButtonToCreateNewGame (void);
static void Gam_PutParamsToCreateNewGame (void);
static void Gam_WriteAuthor (struct Game *Game);
static void Gam_PutFormsToRemEditOneGame (const struct Game *Game,
const char *Anchor);
static void Gam_PutHiddenParamOrder (void);
static void Gam_GetParamOrder (void);
static void Gam_ResetGame (struct Game *Game);
static void Gam_GetGameTxtFromDB (long GamCod,char Txt[Cns_MAX_BYTES_TEXT + 1]);
static void Gam_RemoveGameFromAllTables (long GamCod);
static bool Gam_CheckIfSimilarGameExists (struct Game *Game);
static void Gam_PutFormsEditionGame (struct Game *Game,bool ItsANewGame);
static void Gam_CreateGame (struct Game *Game,const char *Txt);
static void Gam_UpdateGame (struct Game *Game,const char *Txt);
static void Gam_RemAnswersOfAQuestion (long GamCod,unsigned QstInd);
static unsigned Gam_GetMaxQuestionIndexInGame (long GamCod);
static void Gam_ListGameQuestions (struct Game *Game);
static void Gam_ListOneOrMoreQuestionsForEdition (long GamCod,unsigned NumQsts,
MYSQL_RES *mysql_res,
bool ICanEditQuestions);
static void Gam_PutIconToAddNewQuestions (void);
static void Gam_PutButtonToAddNewQuestions (void);
static void Gam_AllocateListSelectedQuestions (void);
static void Gam_FreeListsSelectedQuestions (void);
static unsigned Gam_CountNumQuestionsInList (void);
static void Gam_PutParamsOneQst (void);
static void Gam_ExchangeQuestions (long GamCod,
unsigned QstIndTop,unsigned QstIndBottom);
static bool Gam_GetNumMchsGameAndCheckIfEditable (struct Game *Game);
static long Gam_GetParamCurrentGamCod (void);
/*****************************************************************************/
/***************************** List all games ********************************/
/*****************************************************************************/
void Gam_SeeAllGames (void)
{
/***** Get parameters *****/
Gam_GetParams (); // Return value ignored
/***** Show all games *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/**************************** Show all the games *****************************/
/*****************************************************************************/
static void Gam_ListAllGames (void)
{
extern const char *Hlp_ASSESSMENT_Games;
extern const char *Txt_Games;
extern const char *Txt_GAMES_ORDER_HELP[Gam_NUM_ORDERS];
extern const char *Txt_GAMES_ORDER[Gam_NUM_ORDERS];
extern const char *Txt_Matches;
extern const char *Txt_No_games;
Gam_Order_t Order;
struct Pagination Pagination;
unsigned NumGame;
/***** Put link to view matches results *****/
switch (Gbl.Usrs.Me.Role.Logged)
{
case Rol_STD:
McR_PutFormToViewMchResults (ActReqSeeMyMchRes);
break;
case Rol_NET:
case Rol_TCH:
case Rol_SYS_ADM:
McR_PutFormToViewMchResults (ActReqSeeUsrMchRes);
break;
case Rol_DEG_ADM:
case Rol_CTR_ADM:
case Rol_INS_ADM:
break;
default:
Rol_WrongRoleExit ();
break;
}
/***** Get number of groups in current course *****/
if (!Gbl.Crs.Grps.NumGrps)
Gbl.Crs.Grps.WhichGrps = Grp_ALL_GROUPS;
/***** Get list of games *****/
Gam_GetListGames ();
/***** Compute variables related to pagination *****/
Pagination.NumItems = Gbl.Games.Num;
Pagination.CurrentPage = (int) Gbl.Games.CurrentPage;
Pag_CalculatePagination (&Pagination);
Gbl.Games.CurrentPage = (unsigned) Pagination.CurrentPage;
/***** Write links to pages *****/
if (Pagination.MoreThanOnePage)
Pag_WriteLinksToPagesCentered (Pag_GAMES,
0,
&Pagination);
/***** Begin box *****/
Box_BoxBegin ("100%",Txt_Games,Gam_PutIconsListGames,
Hlp_ASSESSMENT_Games,Box_NOT_CLOSABLE);
if (Gbl.Games.Num)
{
/***** Table head *****/
HTM_TABLE_BeginWideMarginPadding (2);
HTM_TR_Begin (NULL);
if (Gam_CheckIfICanEditGames ())
HTM_TH (1,1,"CONTEXT_COL",NULL); // Column for contextual icons
for (Order = (Gam_Order_t) 0;
Order <= (Gam_Order_t) (Gam_NUM_ORDERS - 1);
Order++)
{
HTM_TH_Begin (1,1,"LM");
/* Form to change order */
Frm_StartForm (ActSeeAllGam);
Pag_PutHiddenParamPagNum (Pag_GAMES,Gbl.Games.CurrentPage);
Par_PutHiddenParamUnsigned (NULL,"Order",(unsigned) Order);
HTM_BUTTON_SUBMIT_Begin (Txt_GAMES_ORDER_HELP[Order],"BT_LINK TIT_TBL",NULL);
if (Order == Gbl.Games.SelectedOrder)
HTM_U_Begin ();
HTM_Txt (Txt_GAMES_ORDER[Order]);
if (Order == Gbl.Games.SelectedOrder)
HTM_U_End ();
HTM_BUTTON_End ();
Frm_EndForm ();
HTM_TH_End ();
}
HTM_TH (1,1,"RM",Txt_Matches);
HTM_TR_End ();
/***** Write all the games *****/
for (NumGame = Pagination.FirstItemVisible;
NumGame <= Pagination.LastItemVisible;
NumGame++)
Gam_ShowOneGame (Gbl.Games.LstGamCods[NumGame - 1],
false,
false, // Do not list game questions
false); // Do not put form to start new match
/***** End table *****/
HTM_TABLE_End ();
}
else // No games created
Ale_ShowAlert (Ale_INFO,Txt_No_games);
/***** Button to create a new game *****/
if (Gam_CheckIfICanEditGames ())
Gam_PutButtonToCreateNewGame ();
/***** End box *****/
Box_BoxEnd ();
/***** Write again links to pages *****/
if (Pagination.MoreThanOnePage)
Pag_WriteLinksToPagesCentered (Pag_GAMES,
0,
&Pagination);
/***** Free list of games *****/
Gam_FreeListGames ();
}
/*****************************************************************************/
/************************ Check if I can edit games **************************/
/*****************************************************************************/
static bool Gam_CheckIfICanEditGames (void)
{
switch (Gbl.Usrs.Me.Role.Logged)
{
case Rol_TCH:
case Rol_SYS_ADM:
return true;
default:
return false;
}
return false;
}
/*****************************************************************************/
/***************** Put contextual icons in list of games *******************/
/*****************************************************************************/
static void Gam_PutIconsListGames (void)
{
/***** Put icon to create a new game *****/
if (Gam_CheckIfICanEditGames ())
Gam_PutIconToCreateNewGame ();
/***** Put icon to show a figure *****/
Gbl.Figures.FigureType = Fig_GAMES;
Fig_PutIconToShowFigure ();
}
/*****************************************************************************/
/********************** Put icon to create a new game **********************/
/*****************************************************************************/
static void Gam_PutIconToCreateNewGame (void)
{
extern const char *Txt_New_game;
Ico_PutContextualIconToAdd (ActFrmNewGam,NULL,Gam_PutParamsToCreateNewGame,
Txt_New_game);
}
/*****************************************************************************/
/********************* Put button to create a new game *********************/
/*****************************************************************************/
static void Gam_PutButtonToCreateNewGame (void)
{
extern const char *Txt_New_game;
Frm_StartForm (ActFrmNewGam);
Gam_PutParamsToCreateNewGame ();
Btn_PutConfirmButton (Txt_New_game);
Frm_EndForm ();
}
/*****************************************************************************/
/******************* Put parameters to create a new game *******************/
/*****************************************************************************/
static void Gam_PutParamsToCreateNewGame (void)
{
Gam_PutHiddenParamGameOrder ();
Pag_PutHiddenParamPagNum (Pag_GAMES,Gbl.Games.CurrentPage);
}
/*****************************************************************************/
/****************************** Show one game ******************************/
/*****************************************************************************/
void Gam_SeeOneGame (void)
{
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Show game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
false, // Do not list game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/******************************* Show one game *******************************/
/*****************************************************************************/
void Gam_ShowOneGame (long GamCod,
bool ShowOnlyThisGame,
bool ListGameQuestions,
bool PutFormNewMatch)
{
extern const char *Hlp_ASSESSMENT_Games;
extern const char *Txt_Game;
extern const char *Txt_View_game;
extern const char *Txt_No_of_questions;
extern const char *Txt_Matches;
char *Anchor = NULL;
static unsigned UniqueId = 0;
char *Id;
struct Game Game;
Dat_StartEndTime_t StartEndTime;
char Txt[Cns_MAX_BYTES_TEXT + 1];
/***** Begin box *****/
if (ShowOnlyThisGame)
Box_BoxBegin (NULL,Txt_Game,NULL,
Hlp_ASSESSMENT_Games,Box_NOT_CLOSABLE);
/***** Get data of this game *****/
Game.GamCod = GamCod;
Gam_GetDataOfGameByCod (&Game);
/***** Set anchor string *****/
Frm_SetAnchorStr (Game.GamCod,&Anchor);
/***** Begin table *****/
if (ShowOnlyThisGame)
HTM_TABLE_BeginWidePadding (2);
/***** Start first row of this game *****/
HTM_TR_Begin (NULL);
/***** Icons related to this game *****/
if (Gam_CheckIfICanEditGames ())
{
if (ShowOnlyThisGame)
HTM_TD_Begin ("rowspan=\"2\" class=\"CONTEXT_COL\"");
else
HTM_TD_Begin ("rowspan=\"2\" class=\"CONTEXT_COL COLOR%u\"",Gbl.RowEvenOdd);
/* Icons to remove/edit this game */
Gam_PutFormsToRemEditOneGame (&Game,Anchor);
HTM_TD_End ();
}
/***** Start/end date/time *****/
UniqueId++;
for (StartEndTime = (Dat_StartEndTime_t) 0;
StartEndTime <= (Dat_StartEndTime_t) (Dat_NUM_START_END_TIME - 1);
StartEndTime++)
{
if (asprintf (&Id,"gam_date_%u_%u",(unsigned) StartEndTime,UniqueId) < 0)
Lay_NotEnoughMemoryExit ();
if (ShowOnlyThisGame)
HTM_TD_Begin ("id=\"%s\" class=\"%s LT\"",
Id,Game.Hidden ? "DATE_GREEN_LIGHT":
"DATE_GREEN");
else
HTM_TD_Begin ("id=\"%s\" class=\"%s LT COLOR%u\"",
Id,Game.Hidden ? "DATE_GREEN_LIGHT":
"DATE_GREEN",
Gbl.RowEvenOdd);
if (Game.TimeUTC[Dat_START_TIME])
Dat_WriteLocalDateHMSFromUTC (Id,Game.TimeUTC[StartEndTime],
Gbl.Prefs.DateFormat,Dat_SEPARATOR_BREAK,
true,true,true,0x7);
HTM_TD_End ();
free (Id);
}
/***** Game title and main data *****/
if (ShowOnlyThisGame)
HTM_TD_Begin ("class=\"LT\"");
else
HTM_TD_Begin ("class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
/* Game title */
Gam_SetParamCurrentGamCod (GamCod); // Used to pass parameter
HTM_ARTICLE_Begin (Anchor);
Frm_StartForm (ActSeeGam);
Gam_PutParams ();
HTM_BUTTON_SUBMIT_Begin (Txt_View_game,
Game.Hidden ? "BT_LINK ASG_TITLE_LIGHT":
"BT_LINK ASG_TITLE",
NULL);
HTM_Txt (Game.Title);
HTM_BUTTON_End ();
Frm_EndForm ();
HTM_ARTICLE_End ();
/* Number of questions */
HTM_DIV_Begin ("class=\"%s\"",Game.Hidden ? "ASG_GRP_LIGHT" :
"ASG_GRP");
HTM_TxtF ("%s:&nbsp;%u",Txt_No_of_questions,Game.NumQsts);
HTM_DIV_End ();
HTM_TD_End ();
/***** Number of matches in game *****/
if (ShowOnlyThisGame)
HTM_TD_Begin ("class=\"RT\"");
else
HTM_TD_Begin ("class=\"RT COLOR%u\"",Gbl.RowEvenOdd);
Gam_SetParamCurrentGamCod (GamCod); // Used to pass parameter
Frm_StartForm (ActSeeGam);
Gam_PutParams ();
HTM_BUTTON_SUBMIT_Begin (Txt_Matches,
Game.Hidden ? "BT_LINK ASG_TITLE_LIGHT" :
"BT_LINK ASG_TITLE",
NULL);
if (ShowOnlyThisGame)
HTM_TxtF ("%s:&nbsp;",Txt_Matches);
HTM_Unsigned (Game.NumMchs);
HTM_BUTTON_End ();
Frm_EndForm ();
HTM_TD_End ();
/***** End 1st row of this game *****/
HTM_TR_End ();
/***** Start 2nd row of this game *****/
HTM_TR_Begin (NULL);
/***** Author of the game *****/
if (ShowOnlyThisGame)
HTM_TD_Begin ("colspan=\"2\" class=\"LT\"");
else
HTM_TD_Begin ("colspan=\"2\" class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
Gam_WriteAuthor (&Game);
HTM_TD_End ();
/***** Text of the game *****/
if (ShowOnlyThisGame)
HTM_TD_Begin ("colspan=\"2\" class=\"LT\"");
else
HTM_TD_Begin ("colspan=\"2\" class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
Gam_GetGameTxtFromDB (Game.GamCod,Txt);
Str_ChangeFormat (Str_FROM_HTML,Str_TO_RIGOROUS_HTML,
Txt,Cns_MAX_BYTES_TEXT,false); // Convert from HTML to rigorous HTML
Str_InsertLinks (Txt,Cns_MAX_BYTES_TEXT,60); // Insert links
HTM_DIV_Begin ("class=\"PAR %s\"",Game.Hidden ? "DAT_LIGHT" :
"DAT");
HTM_Txt (Txt);
HTM_DIV_End ();
HTM_TD_End ();
/***** End 2nd row of this game *****/
HTM_TR_End ();
/***** End table *****/
if (ShowOnlyThisGame)
HTM_TABLE_End ();
else
Gbl.RowEvenOdd = 1 - Gbl.RowEvenOdd;
/***** Free anchor string *****/
Frm_FreeAnchorStr (Anchor);
if (ShowOnlyThisGame)
{
if (ListGameQuestions)
/***** Write questions of this game *****/
Gam_ListGameQuestions (&Game);
else
/***** List matches *****/
Mch_ListMatches (&Game,PutFormNewMatch);
/***** End box *****/
Box_BoxEnd ();
}
}
/*****************************************************************************/
/*********************** Write the author of a game ************************/
/*****************************************************************************/
static void Gam_WriteAuthor (struct Game *Game)
{
Usr_WriteAuthor1Line (Game->UsrCod,Game->Hidden);
}
/*****************************************************************************/
/****** Put a hidden parameter with the type of order in list of games *******/
/*****************************************************************************/
void Gam_PutHiddenParamGameOrder (void)
{
Par_PutHiddenParamUnsigned (NULL,"Order",(unsigned) Gbl.Games.SelectedOrder);
}
/*****************************************************************************/
/******************** Put a link (form) to edit one game *********************/
/*****************************************************************************/
static void Gam_PutFormsToRemEditOneGame (const struct Game *Game,
const char *Anchor)
{
Gam_SetParamCurrentGamCod (Game->GamCod); // Used to pass parameter
/***** Put icon to remove game *****/
Ico_PutContextualIconToRemove (ActReqRemGam,Gam_PutParams);
/***** Put icon to unhide/hide game *****/
if (Game->Hidden)
Ico_PutContextualIconToUnhide (ActShoGam,Anchor,Gam_PutParams);
else
Ico_PutContextualIconToHide (ActHidGam,Anchor,Gam_PutParams);
/***** Put icon to edit game *****/
Ico_PutContextualIconToEdit (ActEdiOneGam,Gam_PutParams);
}
/*****************************************************************************/
/*********************** Params used to edit a game **************************/
/*****************************************************************************/
void Gam_PutParams (void)
{
long CurrentGamCod = Gam_GetParamCurrentGamCod ();
if (CurrentGamCod > 0)
Gam_PutParamGameCod (CurrentGamCod);
Gam_PutHiddenParamOrder ();
Grp_PutParamWhichGrps ();
Pag_PutHiddenParamPagNum (Pag_GAMES,Gbl.Games.CurrentPage);
}
/*****************************************************************************/
/******************* Get parameters used to edit a game **********************/
/*****************************************************************************/
long Gam_GetParams (void)
{
/***** Get other parameters *****/
Gam_GetParamOrder ();
Grp_GetParamWhichGrps ();
Gbl.Games.CurrentPage = Pag_GetParamPagNum (Pag_GAMES);
/***** Get game code *****/
return Gam_GetParamGameCod ();
}
/*****************************************************************************/
/****** Put a hidden parameter with the type of order in list of games *******/
/*****************************************************************************/
static void Gam_PutHiddenParamOrder (void)
{
Par_PutHiddenParamUnsigned (NULL,"Order",(unsigned) Gbl.Games.SelectedOrder);
}
/*****************************************************************************/
/********** Get parameter with the type or order in list of games ************/
/*****************************************************************************/
static void Gam_GetParamOrder (void)
{
Gbl.Games.SelectedOrder = (Gam_Order_t)
Par_GetParToUnsignedLong ("Order",
0,
Gam_NUM_ORDERS - 1,
(unsigned long) Gam_ORDER_DEFAULT);
}
/*****************************************************************************/
/*********************** Get list of all the games *************************/
/*****************************************************************************/
void Gam_GetListGames (void)
{
static const char *OrderBySubQuery[Gam_NUM_ORDERS] =
{
[Gam_ORDER_BY_START_DATE] = "StartTime DESC,EndTime DESC,gam_games.Title DESC",
[Gam_ORDER_BY_END_DATE ] = "EndTime DESC,StartTime DESC,gam_games.Title DESC",
[Gam_ORDER_BY_TITLE ] = "gam_games.Title DESC",
};
MYSQL_RES *mysql_res;
MYSQL_ROW row;
char *HiddenSubQuery;
unsigned long NumRows = 0; // Initialized to avoid warning
unsigned NumGame;
/***** Free list of games *****/
if (Gbl.Games.LstIsRead)
Gam_FreeListGames ();
/***** Subquery: get hidden games depending on user's role *****/
switch (Gbl.Usrs.Me.Role.Logged)
{
case Rol_STD:
if (asprintf (&HiddenSubQuery," AND Hidden='N'") < 0)
Lay_NotEnoughMemoryExit ();
break;
case Rol_NET:
case Rol_TCH:
case Rol_DEG_ADM:
case Rol_CTR_ADM:
case Rol_INS_ADM:
case Rol_SYS_ADM:
if (asprintf (&HiddenSubQuery,"%s","") < 0)
Lay_NotEnoughMemoryExit ();
break;
default:
Rol_WrongRoleExit ();
break;
}
/***** Get list of games from database *****/
NumRows = DB_QuerySELECT (&mysql_res,"can not get games",
"SELECT gam_games.GamCod," // row[0]
"MIN(mch_matches.StartTime) AS StartTime," // row[1]
"MAX(mch_matches.EndTime) AS EndTime" // row[2]
" FROM gam_games"
" LEFT JOIN mch_matches"
" ON gam_games.GamCod=mch_matches.GamCod"
" WHERE gam_games.CrsCod=%ld"
"%s"
" GROUP BY gam_games.GamCod"
" ORDER BY %s",
Gbl.Hierarchy.Crs.CrsCod,
HiddenSubQuery,
OrderBySubQuery[Gbl.Games.SelectedOrder]);
/***** Free allocated memory for subquery *****/
free (HiddenSubQuery);
if (NumRows) // Games found...
{
Gbl.Games.Num = (unsigned) NumRows;
/***** Create list of games *****/
if ((Gbl.Games.LstGamCods = (long *) calloc (NumRows,sizeof (long))) == NULL)
Lay_NotEnoughMemoryExit ();
/***** Get the games codes *****/
for (NumGame = 0;
NumGame < Gbl.Games.Num;
NumGame++)
{
/* Get next game code (row[0]) */
row = mysql_fetch_row (mysql_res);
if ((Gbl.Games.LstGamCods[NumGame] = Str_ConvertStrCodToLongCod (row[0])) <= 0)
Lay_ShowErrorAndExit ("Error: wrong game code.");
}
}
else
Gbl.Games.Num = 0;
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
Gbl.Games.LstIsRead = true;
}
/*****************************************************************************/
/********************** Get game data using its code *************************/
/*****************************************************************************/
void Gam_GetDataOfGameByCod (struct Game *Game)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned long NumRows;
/***** Get data of game from database *****/
NumRows = DB_QuerySELECT (&mysql_res,"can not get game data",
"SELECT gam_games.GamCod," // row[0]
"gam_games.CrsCod," // row[1]
"gam_games.Hidden," // row[2]
"gam_games.UsrCod," // row[3]
"gam_games.Title" // row[4]
" FROM gam_games"
" LEFT JOIN mch_matches"
" ON gam_games.GamCod=mch_matches.GamCod"
" WHERE gam_games.GamCod=%ld",
Game->GamCod);
if (NumRows) // Game found...
{
/* Get row */
row = mysql_fetch_row (mysql_res);
/* Get code of the game (row[0]) */
Game->GamCod = Str_ConvertStrCodToLongCod (row[0]);
/* Get code of the course (row[1]) */
Game->CrsCod = Str_ConvertStrCodToLongCod (row[1]);
/* Get whether the game is hidden (row[2]) */
Game->Hidden = (row[2][0] == 'Y');
/* Get author of the game (row[3]) */
Game->UsrCod = Str_ConvertStrCodToLongCod (row[3]);
/* Get the title of the game (row[4]) */
Str_Copy (Game->Title,row[4],
Gam_MAX_BYTES_TITLE);
/* Get number of questions */
Game->NumQsts = Gam_GetNumQstsGame (Game->GamCod);
/* Get number of matches */
Game->NumMchs = Mch_GetNumMchsInGame (Game->GamCod);
}
else
/* Initialize to empty game */
Gam_ResetGame (Game);
/* Free structure that stores the query result */
DB_FreeMySQLResult (&mysql_res);
if (Game->GamCod > 0)
{
/***** Get start and end times from database *****/
NumRows = DB_QuerySELECT (&mysql_res,"can not get game data",
"SELECT UNIX_TIMESTAMP(MIN(StartTime))," // row[0]
"UNIX_TIMESTAMP(MAX(EndTime))" // row[1]
" FROM mch_matches"
" WHERE GamCod=%ld",
Game->GamCod);
if (NumRows)
{
/* Get row */
row = mysql_fetch_row (mysql_res);
/* Get start date (row[0] holds the start UTC time) */
Game->TimeUTC[Dat_START_TIME] = Dat_GetUNIXTimeFromStr (row[0]);
/* Get end date (row[1] holds the end UTC time) */
Game->TimeUTC[Dat_END_TIME ] = Dat_GetUNIXTimeFromStr (row[1]);
}
/* Free structure that stores the query result */
DB_FreeMySQLResult (&mysql_res);
}
else
{
Game->TimeUTC[Dat_START_TIME] =
Game->TimeUTC[Dat_END_TIME ] = (time_t) 0;
}
}
/*****************************************************************************/
/*************************** Initialize game to empty ************************/
/*****************************************************************************/
static void Gam_ResetGame (struct Game *Game)
{
/***** Initialize to empty game *****/
Game->GamCod = -1L;
Game->CrsCod = -1L;
Game->UsrCod = -1L;
Game->TimeUTC[Dat_START_TIME] = (time_t) 0;
Game->TimeUTC[Dat_END_TIME ] = (time_t) 0;
Game->Title[0] = '\0';
Game->NumQsts = 0;
Game->NumMchs = 0;
Game->Hidden = false;
}
/*****************************************************************************/
/***************************** Free list of games ****************************/
/*****************************************************************************/
void Gam_FreeListGames (void)
{
if (Gbl.Games.LstIsRead && Gbl.Games.LstGamCods)
{
/***** Free memory used by the list of games *****/
free (Gbl.Games.LstGamCods);
Gbl.Games.LstGamCods = NULL;
Gbl.Games.Num = 0;
Gbl.Games.LstIsRead = false;
}
}
/*****************************************************************************/
/********************** Get game text from database ************************/
/*****************************************************************************/
static void Gam_GetGameTxtFromDB (long GamCod,char Txt[Cns_MAX_BYTES_TEXT + 1])
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned long NumRows;
/***** Get text of game from database *****/
NumRows = DB_QuerySELECT (&mysql_res,"can not get game text",
"SELECT Txt FROM gam_games WHERE GamCod=%ld",
GamCod);
/***** The result of the query must have one row or none *****/
if (NumRows == 1)
{
/* Get info text */
row = mysql_fetch_row (mysql_res);
Str_Copy (Txt,row[0],
Cns_MAX_BYTES_TEXT);
}
else
Txt[0] = '\0';
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
if (NumRows > 1)
Lay_ShowErrorAndExit ("Error when getting game text.");
}
/*****************************************************************************/
/******************** Write parameter with code of game **********************/
/*****************************************************************************/
void Gam_PutParamGameCod (long GamCod)
{
Par_PutHiddenParamLong (NULL,"GamCod",GamCod);
}
/*****************************************************************************/
/********************* Get parameter with code of game ***********************/
/*****************************************************************************/
long Gam_GetParamGameCod (void)
{
/***** Get code of game *****/
return Par_GetParToLong ("GamCod");
}
/*****************************************************************************/
/*************** Ask for confirmation of removing of a game ******************/
/*****************************************************************************/
void Gam_AskRemGame (void)
{
extern const char *Txt_Do_you_really_want_to_remove_the_game_X;
extern const char *Txt_Remove_game;
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Get data of the game from database *****/
Gam_GetDataOfGameByCod (&Game);
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
/***** Show question and button to remove game *****/
Gam_SetParamCurrentGamCod (Game.GamCod); // Used to pass parameter
Ale_ShowAlertAndButton (ActRemGam,NULL,NULL,Gam_PutParams,
Btn_REMOVE_BUTTON,Txt_Remove_game,
Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_game_X,
Game.Title);
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/******************************* Remove a game *******************************/
/*****************************************************************************/
void Gam_RemoveGame (void)
{
extern const char *Txt_Game_X_removed;
struct Game Game;
/***** Get game code *****/
if ((Game.GamCod = Gam_GetParamGameCod ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Get data of the game from database *****/
Gam_GetDataOfGameByCod (&Game);
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
/***** Remove game from all tables *****/
Gam_RemoveGameFromAllTables (Game.GamCod);
/***** Write message to show the change made *****/
Ale_ShowAlert (Ale_SUCCESS,Txt_Game_X_removed,
Game.Title);
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/*********************** Remove game from all tables *************************/
/*****************************************************************************/
static void Gam_RemoveGameFromAllTables (long GamCod)
{
/***** Remove all matches in this game *****/
Mch_RemoveMatchesInGameFromAllTables (GamCod);
/***** Remove game question *****/
DB_QueryDELETE ("can not remove game questions",
"DELETE FROM gam_questions WHERE GamCod=%ld",
GamCod);
/***** Remove game *****/
DB_QueryDELETE ("can not remove game",
"DELETE FROM gam_games WHERE GamCod=%ld",
GamCod);
}
/*****************************************************************************/
/******************** Remove all the games of a course ***********************/
/*****************************************************************************/
void Gam_RemoveGamesCrs (long CrsCod)
{
/***** Remove all matches in this course *****/
Mch_RemoveMatchInCourseFromAllTables (CrsCod);
/***** Remove the questions in games *****/
DB_QueryDELETE ("can not remove questions in course games",
"DELETE FROM gam_questions"
" USING gam_games,gam_questions"
" WHERE gam_games.CrsCod=%ld"
" AND gam_games.GamCod=gam_questions.GamCod",
CrsCod);
/***** Remove the games *****/
DB_QueryDELETE ("can not remove course games",
"DELETE FROM gam_games"
" WHERE CrsCod=%ld",
CrsCod);
}
/*****************************************************************************/
/******************************** Hide a game ******************************/
/*****************************************************************************/
void Gam_HideGame (void)
{
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Get data of the game from database *****/
Gam_GetDataOfGameByCod (&Game);
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
/***** Hide game *****/
DB_QueryUPDATE ("can not hide game",
"UPDATE gam_games SET Hidden='Y' WHERE GamCod=%ld",
Game.GamCod);
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/******************************** Show a game ******************************/
/*****************************************************************************/
void Gam_UnhideGame (void)
{
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Get data of the game from database *****/
Gam_GetDataOfGameByCod (&Game);
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
/***** Show game *****/
DB_QueryUPDATE ("can not show game",
"UPDATE gam_games SET Hidden='N' WHERE GamCod=%ld",
Game.GamCod);
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/******************* Check if the title of a game exists *******************/
/*****************************************************************************/
static bool Gam_CheckIfSimilarGameExists (struct Game *Game)
{
/***** Get number of games with a field value from database *****/
return (DB_QueryCOUNT ("can not get similar games",
"SELECT COUNT(*) FROM gam_games"
" WHERE CrsCod=%ld AND Title='%s'"
" AND GamCod<>%ld",
Gbl.Hierarchy.Crs.CrsCod,Game->Title,
Game->GamCod) != 0);
}
/*****************************************************************************/
/**************** Request the creation or edition of a game ******************/
/*****************************************************************************/
void Gam_RequestCreatOrEditGame (void)
{
struct Game Game;
bool ItsANewGame;
/***** Check if I can create new games *****/
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
/***** Get parameters *****/
Game.GamCod = Gam_GetParams ();
ItsANewGame = (Game.GamCod < 0);
/***** Put forms to create/edit a game *****/
Gam_PutFormsEditionGame (&Game,ItsANewGame);
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/********************* Put a form to create/edit a game **********************/
/*****************************************************************************/
static void Gam_PutFormsEditionGame (struct Game *Game,bool ItsANewGame)
{
extern const char *Hlp_ASSESSMENT_Games_new_game;
extern const char *Hlp_ASSESSMENT_Games_edit_game;
extern const char *The_ClassFormInBox[The_NUM_THEMES];
extern const char *Txt_New_game;
extern const char *Txt_Edit_game;
extern const char *Txt_Title;
extern const char *Txt_Description;
extern const char *Txt_Create_game;
extern const char *Txt_Save_changes;
char Txt[Cns_MAX_BYTES_TEXT + 1];
/***** Get game data *****/
if (ItsANewGame)
/* Initialize to empty game */
Gam_ResetGame (Game);
else
{
/* Get game data from database */
Gam_GetDataOfGameByCod (Game);
Gam_GetGameTxtFromDB (Game->GamCod,Txt);
}
/***** Begin form *****/
Gam_SetParamCurrentGamCod (Game->GamCod); // Used to pass parameter
Frm_StartForm (ItsANewGame ? ActNewGam :
ActChgGam);
Gam_PutParams ();
/***** Begin box and table *****/
if (ItsANewGame)
Box_StartBoxTable (NULL,Txt_New_game,NULL,
Hlp_ASSESSMENT_Games_new_game,Box_NOT_CLOSABLE,2);
else
Box_StartBoxTable (NULL,
Game->Title[0] ? Game->Title :
Txt_Edit_game,
NULL,
Hlp_ASSESSMENT_Games_edit_game,Box_NOT_CLOSABLE,2);
/***** Game title *****/
HTM_TR_Begin (NULL);
HTM_TD_Begin ("class=\"RM\"");
HTM_LABEL_Begin ("for=\"Title\" class=\"%s\"",The_ClassFormInBox[Gbl.Prefs.Theme]);
HTM_TxtF ("%s:",Txt_Title);
HTM_LABEL_End ();
HTM_TD_End ();
HTM_TD_Begin ("class=\"LM\"");
HTM_INPUT_TEXT ("Title",Gam_MAX_CHARS_TITLE,Game->Title,false,
"id=\"Title\" size=\"45\" required=\"required\"");
HTM_TD_End ();
HTM_TR_End ();
/***** Game text *****/
HTM_TR_Begin (NULL);
HTM_TD_Begin ("class=\"RT\"");
HTM_LABEL_Begin ("for=\"Txt\" class=\"%s\"",The_ClassFormInBox[Gbl.Prefs.Theme]);
HTM_TxtF ("%s:",Txt_Description);
HTM_LABEL_End ();
HTM_TD_End ();
HTM_TD_Begin ("class=\"LT\"");
HTM_TEXTAREA_Begin ("id=\"Txt\" name=\"Txt\" cols=\"60\" rows=\"10\"");
if (!ItsANewGame)
HTM_Txt (Txt);
HTM_TEXTAREA_End ();
HTM_TD_End ();
HTM_TR_End ();
/***** End table, send button and end box *****/
if (ItsANewGame)
Box_EndBoxTableWithButton (Btn_CREATE_BUTTON,Txt_Create_game);
else
Box_EndBoxTableWithButton (Btn_CONFIRM_BUTTON,Txt_Save_changes);
/***** End form *****/
Frm_EndForm ();
/***** Show questions of the game ready to be edited *****/
if (!ItsANewGame)
Gam_ListGameQuestions (Game);
}
/*****************************************************************************/
/********************* Receive form to create a new game *******************/
/*****************************************************************************/
void Gam_RecFormGame (void)
{
extern const char *Txt_Already_existed_a_game_with_the_title_X;
extern const char *Txt_You_must_specify_the_title_of_the_game;
struct Game OldGame;
struct Game NewGame;
bool ItsANewGame;
bool NewGameIsCorrect = true;
char Txt[Cns_MAX_BYTES_TEXT + 1];
/***** Get the code of the game *****/
NewGame.GamCod = Gam_GetParamGameCod ();
/***** Check if game has matches *****/
if (Gam_CheckIfICanEditGames ())
{
ItsANewGame = (NewGame.GamCod < 0);
if (!ItsANewGame)
{
/* Get data of the old (current) game from database */
OldGame.GamCod = NewGame.GamCod;
Gam_GetDataOfGameByCod (&OldGame);
if (!Gam_CheckIfICanEditGames ())
Lay_NoPermissionExit ();
}
/***** Get game title *****/
Par_GetParToText ("Title",NewGame.Title,Gam_MAX_BYTES_TITLE);
/***** Get game text and insert links *****/
Par_GetParToHTML ("Txt",Txt,Cns_MAX_BYTES_TEXT); // Store in HTML format (not rigorous)
/***** Check if title is correct *****/
if (NewGame.Title[0]) // If there's a game title
{
/* If title of game was in database... */
if (Gam_CheckIfSimilarGameExists (&NewGame))
{
NewGameIsCorrect = false;
Ale_ShowAlert (Ale_WARNING,Txt_Already_existed_a_game_with_the_title_X,
NewGame.Title);
}
}
else // If there is not a game title
{
NewGameIsCorrect = false;
Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_game);
}
/***** Create a new game or update an existing one *****/
if (NewGameIsCorrect)
{
if (ItsANewGame)
Gam_CreateGame (&NewGame,Txt); // Add new game to database
else
Gam_UpdateGame (&NewGame,Txt);
}
else
Gam_RequestCreatOrEditGame ();
/***** Put forms to create/edit a game *****/
Gam_PutFormsEditionGame (&NewGame,false);
}
else
Lay_NoPermissionExit ();
/***** Show games again *****/
Gam_ListAllGames ();
}
/*****************************************************************************/
/**************************** Create a new game ******************************/
/*****************************************************************************/
static void Gam_CreateGame (struct Game *Game,const char *Txt)
{
extern const char *Txt_Created_new_game_X;
/***** Create a new game *****/
Game->GamCod =
DB_QueryINSERTandReturnCode ("can not create new game",
"INSERT INTO gam_games"
" (CrsCod,Hidden,UsrCod,Title,Txt)"
" VALUES"
" (%ld,'N',%ld,'%s','%s')",
Gbl.Hierarchy.Crs.CrsCod,
Gbl.Usrs.Me.UsrDat.UsrCod,
Game->Title,
Txt);
/***** Write success message *****/
Ale_ShowAlert (Ale_SUCCESS,Txt_Created_new_game_X,
Game->Title);
}
/*****************************************************************************/
/************************* Update an existing game *************************/
/*****************************************************************************/
static void Gam_UpdateGame (struct Game *Game,const char *Txt)
{
extern const char *Txt_The_game_has_been_modified;
/***** Update the data of the game *****/
DB_QueryUPDATE ("can not update game",
"UPDATE gam_games"
" SET CrsCod=%ld,"
"Title='%s',"
"Txt='%s'"
" WHERE GamCod=%ld",
Gbl.Hierarchy.Crs.CrsCod,
Game->Title,
Txt,
Game->GamCod);
/***** Write success message *****/
Ale_ShowAlert (Ale_SUCCESS,Txt_The_game_has_been_modified);
}
/*****************************************************************************/
/************* Check if a match is associated to a given group ***************/
/*****************************************************************************/
bool Gam_CheckIfMatchIsAssociatedToGrp (long MchCod,long GrpCod)
{
/***** Get if a match is associated to a group from database *****/
return (DB_QueryCOUNT ("can not check if a match is associated to a group",
"SELECT COUNT(*) FROM mch_groups"
" WHERE MchCod=%ld AND GrpCod=%ld",
MchCod,GrpCod) != 0);
}
/*****************************************************************************/
/******************* Get number of questions of a game *********************/
/*****************************************************************************/
unsigned Gam_GetNumQstsGame (long GamCod)
{
/***** Get nuumber of questions in a game from database *****/
return
(unsigned) DB_QueryCOUNT ("can not get number of questions of a game",
"SELECT COUNT(*) FROM gam_questions"
" WHERE GamCod=%ld",
GamCod);
}
/*****************************************************************************/
/*********** Put a form to edit/create a question in game *****************/
/*****************************************************************************/
void Gam_RequestNewQuestion (void)
{
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Show form to create a new question in this game *****/
Gam_SetParamCurrentGamCod (Game.GamCod); // Used to pass parameter
Tst_ShowFormAskSelectTstsForGame ();
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/**************** List several test questions for selection ******************/
/*****************************************************************************/
void Gam_ListTstQuestionsToSelect (void)
{
struct Game Game;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** List several test questions for selection *****/
Gam_SetParamCurrentGamCod (Game.GamCod); // Used to pass parameter
Tst_ListQuestionsToSelect ();
}
else
Lay_NoPermissionExit ();
}
/*****************************************************************************/
/****************** Write parameter with index of question *******************/
/*****************************************************************************/
void Gam_PutParamQstInd (unsigned QstInd)
{
Par_PutHiddenParamUnsigned (NULL,"QstInd",QstInd);
}
/*****************************************************************************/
/******************* Get parameter with index of question ********************/
/*****************************************************************************/
unsigned Gam_GetParamQstInd (void)
{
long QstInd;
QstInd = Par_GetParToLong ("QstInd");
if (QstInd < 0)
Lay_ShowErrorAndExit ("Wrong question index.");
return (unsigned) QstInd;
}
/*****************************************************************************/
/******************* Get parameter with index of question ********************/
/*****************************************************************************/
unsigned Gam_GetQstIndFromStr (const char *UnsignedStr)
{
long QstInd;
QstInd = Str_ConvertStrCodToLongCod (UnsignedStr);
return (QstInd > 0) ? (unsigned) QstInd :
0;
}
/*****************************************************************************/
/********************** Remove answers of a game question ********************/
/*****************************************************************************/
static void Gam_RemAnswersOfAQuestion (long GamCod,unsigned QstInd)
{
/***** Remove answers from all matches of this game *****/
DB_QueryDELETE ("can not remove the answers of a question",
"DELETE FROM mch_answers"
" USING mch_matches,mch_answers"
" WHERE mch_matches.GamCod=%ld" // From all matches of this game...
" AND mch_matches.MchCod=mch_answers.MchCod"
" AND mch_answers.QstInd=%u", // ...remove only answers to this question
GamCod,QstInd);
}
/*****************************************************************************/
/************ Get question code given game and index of question *************/
/*****************************************************************************/
long Gam_GetQstCodFromQstInd (long GamCod,unsigned QstInd)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
long QstCod;
/***** Get question code of thw question to be moved up *****/
if (!DB_QuerySELECT (&mysql_res,"can not get question code",
"SELECT QstCod FROM gam_questions"
" WHERE GamCod=%ld AND QstInd=%u",
GamCod,QstInd))
Lay_ShowErrorAndExit ("Error: wrong question code.");
/***** Get question code (row[0]) *****/
row = mysql_fetch_row (mysql_res);
if ((QstCod = Str_ConvertStrCodToLongCod (row[0])) <= 0)
Lay_ShowErrorAndExit ("Error: wrong question code.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return QstCod;
}
/*****************************************************************************/
/****************** Get maximum question index in a game *********************/
/*****************************************************************************/
// Question index can be 1, 2, 3...
// Return 0 if no questions
static unsigned Gam_GetMaxQuestionIndexInGame (long GamCod)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned QstInd = 0;
/***** Get maximum question index in a game from database *****/
DB_QuerySELECT (&mysql_res,"can not get last question index",
"SELECT MAX(QstInd) FROM gam_questions WHERE GamCod=%ld",
GamCod);
row = mysql_fetch_row (mysql_res);
if (row[0]) // There are questions
if (sscanf (row[0],"%u",&QstInd) != 1)
Lay_ShowErrorAndExit ("Error when getting last question index.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return QstInd;
}
/*****************************************************************************/
/*********** Get previous question index to a given index in a game **********/
/*****************************************************************************/
// Input question index can be 1, 2, 3... n-1
// Return question index will be 1, 2, 3... n if previous question exists, or 0 if no previous question
unsigned Gam_GetPrevQuestionIndexInGame (long GamCod,unsigned QstInd)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned PrevQstInd = 0;
/***** Get previous question index in a game from database *****/
// Although indexes are always continuous...
// ...this implementation works even with non continuous indexes
if (!DB_QuerySELECT (&mysql_res,"can not get previous question index",
"SELECT MAX(QstInd) FROM gam_questions"
" WHERE GamCod=%ld AND QstInd<%u",
GamCod,QstInd))
Lay_ShowErrorAndExit ("Error: previous question index not found.");
/***** Get previous question index (row[0]) *****/
row = mysql_fetch_row (mysql_res);
if (row[0])
if (sscanf (row[0],"%u",&PrevQstInd) != 1)
Lay_ShowErrorAndExit ("Error when getting previous question index.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return PrevQstInd;
}
/*****************************************************************************/
/************* Get next question index to a given index in a game ************/
/*****************************************************************************/
// Input question index can be 0, 1, 2, 3... n-1
// Return question index will be 1, 2, 3... n if next question exists, or 0 if no next question
unsigned Gam_GetNextQuestionIndexInGame (long GamCod,unsigned QstInd)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NextQstInd = Mch_AFTER_LAST_QUESTION; // End of questions has been reached
/***** Get next question index in a game from database *****/
// Although indexes are always continuous...
// ...this implementation works even with non continuous indexes
if (!DB_QuerySELECT (&mysql_res,"can not get next question index",
"SELECT MIN(QstInd) FROM gam_questions"
" WHERE GamCod=%ld AND QstInd>%u",
GamCod,QstInd))
Lay_ShowErrorAndExit ("Error: next question index not found.");
/***** Get next question index (row[0]) *****/
row = mysql_fetch_row (mysql_res);
if (row[0])
if (sscanf (row[0],"%u",&NextQstInd) != 1)
Lay_ShowErrorAndExit ("Error when getting next question index.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return NextQstInd;
}
/*****************************************************************************/
/************************ List the questions of a game ***********************/
/*****************************************************************************/
static void Gam_ListGameQuestions (struct Game *Game)
{
extern const char *Hlp_ASSESSMENT_Games_questions;
extern const char *Txt_Questions;
extern const char *Txt_This_game_has_no_questions;
MYSQL_RES *mysql_res;
unsigned NumQsts;
bool ICanEditQuestions = Gam_GetNumMchsGameAndCheckIfEditable (Game);
/***** Get data of questions from database *****/
NumQsts = (unsigned) DB_QuerySELECT (&mysql_res,"can not get data of a question",
"SELECT gam_questions.QstInd," // row[0]
"gam_questions.QstCod," // row[1]
"tst_questions.AnsType," // row[2]
"tst_questions.Stem," // row[3]
"tst_questions.Feedback," // row[4]
"tst_questions.MedCod" // row[5]
" FROM gam_questions,tst_questions"
" WHERE gam_questions.GamCod=%ld"
" AND gam_questions.QstCod=tst_questions.QstCod"
" ORDER BY gam_questions.QstInd",
Game->GamCod);
/***** Begin box *****/
Gam_SetParamCurrentGamCod (Game->GamCod); // Used to pass parameter
Box_BoxBegin (NULL,Txt_Questions,ICanEditQuestions ? Gam_PutIconToAddNewQuestions :
NULL,
Hlp_ASSESSMENT_Games_questions,Box_NOT_CLOSABLE);
/***** Show table with questions *****/
if (NumQsts)
Gam_ListOneOrMoreQuestionsForEdition (Game->GamCod,NumQsts,mysql_res,
ICanEditQuestions);
else // This game has no questions
Ale_ShowAlert (Ale_INFO,Txt_This_game_has_no_questions);
/***** Put button to add a new question in this game *****/
if (ICanEditQuestions) // I can edit questions
Gam_PutButtonToAddNewQuestions ();
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
/***** End box *****/
Box_BoxEnd ();
}
/*****************************************************************************/
/********************* List game questions for edition ***********************/
/*****************************************************************************/
static void Gam_ListOneOrMoreQuestionsForEdition (long GamCod,unsigned NumQsts,
MYSQL_RES *mysql_res,
bool ICanEditQuestions)
{
extern const char *Txt_Questions;
extern const char *Txt_No_INDEX;
extern const char *Txt_Code;
extern const char *Txt_Tags;
extern const char *Txt_Question;
extern const char *Txt_Move_up_X;
extern const char *Txt_Move_down_X;
extern const char *Txt_Movement_not_allowed;
extern const char *Txt_TST_STR_ANSWER_TYPES[Tst_NUM_ANS_TYPES];
unsigned NumQst;
MYSQL_ROW row;
unsigned QstInd;
unsigned MaxQstInd;
char StrQstInd[Cns_MAX_DECIMAL_DIGITS_UINT + 1];
/***** Get maximum question index *****/
MaxQstInd = Gam_GetMaxQuestionIndexInGame (GamCod);
/***** Write the heading *****/
HTM_TABLE_BeginWideMarginPadding (2);
HTM_TR_Begin (NULL);
HTM_TH_Empty (1);
HTM_TH (1,1,"CT",Txt_No_INDEX);
HTM_TH (1,1,"CT",Txt_Code);
HTM_TH (1,1,"CT",Txt_Tags);
HTM_TH (1,1,"CT",Txt_Question);
HTM_TR_End ();
/***** Write rows *****/
for (NumQst = 0;
NumQst < NumQsts;
NumQst++)
{
Gbl.RowEvenOdd = NumQst % 2;
row = mysql_fetch_row (mysql_res);
/*
row[0] QstInd
row[1] QstCod
row[2] AnsType
row[3] Stem
row[4] Feedback
row[5] MedCod
*/
/***** Create test question *****/
Tst_QstConstructor ();
/* Get question index (row[0]) */
QstInd = Gam_GetQstIndFromStr (row[0]);
snprintf (StrQstInd,sizeof (StrQstInd),
"%u",
QstInd);
/* Get question code (row[1]) */
Gbl.Test.QstCod = Str_ConvertStrCodToLongCod (row[1]);
/***** Icons *****/
Gam_SetParamCurrentGamCod (GamCod); // Used to pass parameter
Gam_CurrentQstInd = QstInd;
HTM_TR_Begin (NULL);
HTM_TD_Begin ("class=\"BT%u\"",Gbl.RowEvenOdd);
/* Put icon to remove the question */
if (ICanEditQuestions)
{
Frm_StartForm (ActReqRemGamQst);
Gam_PutParams ();
Gam_PutParamQstInd (QstInd);
Ico_PutIconRemove ();
Frm_EndForm ();
}
else
Ico_PutIconRemovalNotAllowed ();
/* Put icon to move up the question */
if (ICanEditQuestions && QstInd > 1)
{
snprintf (Gbl.Title,sizeof (Gbl.Title),
Txt_Move_up_X,
StrQstInd);
Lay_PutContextualLinkOnlyIcon (ActUp_GamQst,NULL,Gam_PutParamsOneQst,
"arrow-up.svg",
Gbl.Title);
}
else
Ico_PutIconOff ("arrow-up.svg",Txt_Movement_not_allowed);
/* Put icon to move down the question */
if (ICanEditQuestions && QstInd < MaxQstInd)
{
snprintf (Gbl.Title,sizeof (Gbl.Title),
Txt_Move_down_X,
StrQstInd);
Lay_PutContextualLinkOnlyIcon (ActDwnGamQst,NULL,Gam_PutParamsOneQst,
"arrow-down.svg",
Gbl.Title);
}
else
Ico_PutIconOff ("arrow-down.svg",Txt_Movement_not_allowed);
/* Put icon to edit the question */
if (ICanEditQuestions)
Ico_PutContextualIconToEdit (ActEdiOneTstQst,Tst_PutParamQstCod);
HTM_TD_End ();
HTM_TD_Begin ("class=\"RT COLOR%u\"",Gbl.RowEvenOdd);
/* Write number of question */
HTM_DIV_Begin ("class=\"BIG_INDEX\"");
HTM_Txt (StrQstInd);
HTM_DIV_End ();
/* Write answer type (row[2]) */
Gbl.Test.AnswerType = Tst_ConvertFromStrAnsTypDBToAnsTyp (row[2]);
HTM_DIV_Begin ("class=\"DAT_SMALL\"");
HTM_Txt (Txt_TST_STR_ANSWER_TYPES[Gbl.Test.AnswerType]);
HTM_DIV_End ();
HTM_TD_End ();
/* Write question code */
HTM_TD_Begin ("class=\"DAT_SMALL CT COLOR%u\"",Gbl.RowEvenOdd);
HTM_TxtF ("%ld&nbsp;",Gbl.Test.QstCod);
HTM_TD_End ();
/* Write the question tags */
HTM_TD_Begin ("class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
Tst_GetAndWriteTagsQst (Gbl.Test.QstCod);
HTM_TD_End ();
/* Write stem (row[3]) */
HTM_TD_Begin ("class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
Tst_WriteQstStem (row[3],"TEST_EDI");
/* Get media (row[5]) */
Gbl.Test.Media.MedCod = Str_ConvertStrCodToLongCod (row[5]);
Med_GetMediaDataByCod (&Gbl.Test.Media);
/* Show media */
Med_ShowMedia (&Gbl.Test.Media,
"TEST_MED_EDIT_LIST_STEM_CONTAINER",
"TEST_MED_EDIT_LIST_STEM");
/* Show feedback (row[4]) */
Tst_WriteQstFeedback (row[4],"TEST_EDI_LIGHT");
/* Show answers */
Tst_WriteAnswersEdit (Gbl.Test.QstCod);
HTM_TD_End ();
HTM_TR_End ();
/***** Destroy test question *****/
Tst_QstDestructor ();
}
/***** End table *****/
HTM_TABLE_End ();
}
/*****************************************************************************/
/***************** Put icon to add a new questions to game *******************/
/*****************************************************************************/
static void Gam_PutIconToAddNewQuestions (void)
{
extern const char *Txt_Add_questions;
/***** Put form to create a new question *****/
Ico_PutContextualIconToAdd (ActAddOneGamQst,NULL,Gam_PutParams,
Txt_Add_questions);
}
/*****************************************************************************/
/***************** Put button to add new questions to game *******************/
/*****************************************************************************/
static void Gam_PutButtonToAddNewQuestions (void)
{
extern const char *Txt_Add_questions;
Frm_StartForm (ActAddOneGamQst);
Gam_PutParams ();
Btn_PutConfirmButton (Txt_Add_questions);
Frm_EndForm ();
}
/*****************************************************************************/
/******************** Add selected test questions to game ********************/
/*****************************************************************************/
void Gam_AddTstQuestionsToGame (void)
{
extern const char *Txt_No_questions_have_been_added;
struct Game Game;
const char *Ptr;
char LongStr[Cns_MAX_DECIMAL_DIGITS_LONG + 1];
long QstCod;
unsigned MaxQstInd;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Get selected questions *****/
/* Allocate space for selected question codes */
Gam_AllocateListSelectedQuestions ();
/* Get question codes */
Par_GetParMultiToText ("QstCods",Gbl.Games.ListQuestions,
Gam_MAX_BYTES_LIST_SELECTED_QUESTIONS);
/* Check number of questions */
if (Gam_CountNumQuestionsInList ()) // If questions selected...
{
/***** Insert questions in database *****/
Ptr = Gbl.Games.ListQuestions;
while (*Ptr)
{
/* Get next code */
Par_GetNextStrUntilSeparParamMult (&Ptr,LongStr,Cns_MAX_DECIMAL_DIGITS_LONG);
if (sscanf (LongStr,"%ld",&QstCod) != 1)
Lay_ShowErrorAndExit ("Wrong question code.");
/* Get current maximum index */
MaxQstInd = Gam_GetMaxQuestionIndexInGame (Game.GamCod); // -1 if no questions
/* Insert question in the table of questions */
DB_QueryINSERT ("can not create question",
"INSERT INTO gam_questions"
" (GamCod,QstCod,QstInd)"
" VALUES"
" (%ld,%ld,%u)",
Game.GamCod,QstCod,MaxQstInd + 1);
}
}
else
Ale_ShowAlert (Ale_WARNING,Txt_No_questions_have_been_added);
/***** Free space for selected question codes *****/
Gam_FreeListsSelectedQuestions ();
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/****************** Allocate memory for list of questions ********************/
/*****************************************************************************/
static void Gam_AllocateListSelectedQuestions (void)
{
if (!Gbl.Games.ListQuestions)
{
if ((Gbl.Games.ListQuestions = (char *) malloc (Gam_MAX_BYTES_LIST_SELECTED_QUESTIONS + 1)) == NULL)
Lay_NotEnoughMemoryExit ();;
Gbl.Games.ListQuestions[0] = '\0';
}
}
/*****************************************************************************/
/*********** Free memory used by list of selected question codes *************/
/*****************************************************************************/
static void Gam_FreeListsSelectedQuestions (void)
{
if (Gbl.Games.ListQuestions)
{
free (Gbl.Games.ListQuestions);
Gbl.Games.ListQuestions = NULL;
}
}
/*****************************************************************************/
/**** Count the number of questions in the list of selected question codes ***/
/*****************************************************************************/
static unsigned Gam_CountNumQuestionsInList (void)
{
const char *Ptr;
unsigned NumQuestions = 0;
char LongStr[Cns_MAX_DECIMAL_DIGITS_LONG + 1];
long QstCod;
/***** Go over the list Gbl.Test.ListAnsTypes counting the number of types of answer *****/
Ptr = Gbl.Games.ListQuestions;
while (*Ptr)
{
Par_GetNextStrUntilSeparParamMult (&Ptr,LongStr,Cns_MAX_DECIMAL_DIGITS_LONG);
if (sscanf (LongStr,"%ld",&QstCod) != 1)
Lay_ShowErrorAndExit ("Wrong question code.");
NumQuestions++;
}
return NumQuestions;
}
/*****************************************************************************/
/**************** Put parameter to move/remove one question ******************/
/*****************************************************************************/
static void Gam_PutParamsOneQst (void)
{
Gam_PutParams ();
Gam_PutParamQstInd (Gam_CurrentQstInd);
}
/*****************************************************************************/
/********************** Request the removal of a question ********************/
/*****************************************************************************/
void Gam_RequestRemoveQst (void)
{
extern const char *Txt_Do_you_really_want_to_remove_the_question_X;
extern const char *Txt_Remove_question;
struct Game Game;
unsigned QstInd;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Get question index *****/
QstInd = Gam_GetParamQstInd ();
/***** Show question and button to remove question *****/
Gam_SetParamCurrentGamCod (Game.GamCod); // Used to pass parameter
Gam_CurrentQstInd = QstInd;
Ale_ShowAlertAndButton (ActRemGamQst,NULL,NULL,Gam_PutParamsOneQst,
Btn_REMOVE_BUTTON,Txt_Remove_question,
Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_question_X,
QstInd);
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/****************************** Remove a question ****************************/
/*****************************************************************************/
void Gam_RemoveQst (void)
{
extern const char *Txt_Question_removed;
struct Game Game;
unsigned QstInd;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Get question index *****/
QstInd = Gam_GetParamQstInd ();
/***** Remove the question from all the tables *****/
/* Remove answers from this test question */
Gam_RemAnswersOfAQuestion (Game.GamCod,QstInd);
/* Remove the question itself */
DB_QueryDELETE ("can not remove a question",
"DELETE FROM gam_questions"
" WHERE GamCod=%ld AND QstInd=%u",
Game.GamCod,QstInd);
if (!mysql_affected_rows (&Gbl.mysql))
Lay_ShowErrorAndExit ("The question to be removed does not exist.");
/* Change index of questions greater than this */
DB_QueryUPDATE ("can not update indexes of questions in table of answers",
"UPDATE mch_answers,mch_matches"
" SET mch_answers.QstInd=mch_answers.QstInd-1"
" WHERE mch_matches.GamCod=%ld"
" AND mch_matches.MchCod=mch_answers.MchCod"
" AND mch_answers.QstInd>%u",
Game.GamCod,QstInd);
DB_QueryUPDATE ("can not update indexes of questions",
"UPDATE gam_questions SET QstInd=QstInd-1"
" WHERE GamCod=%ld AND QstInd>%u",
Game.GamCod,QstInd);
/***** Write message *****/
Ale_ShowAlert (Ale_SUCCESS,Txt_Question_removed);
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/***************** Move up position of a question in a game ******************/
/*****************************************************************************/
void Gam_MoveUpQst (void)
{
extern const char *Txt_The_question_has_been_moved_up;
extern const char *Txt_Movement_not_allowed;
struct Game Game;
unsigned QstIndTop;
unsigned QstIndBottom;
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Get question index *****/
QstIndBottom = Gam_GetParamQstInd ();
/***** Move up question *****/
if (QstIndBottom > 1)
{
/* Indexes of questions to be exchanged */
QstIndTop = Gam_GetPrevQuestionIndexInGame (Game.GamCod,QstIndBottom);
if (!QstIndTop)
Lay_ShowErrorAndExit ("Wrong index of question.");
/* Exchange questions */
Gam_ExchangeQuestions (Game.GamCod,QstIndTop,QstIndBottom);
/* Success alert */
Ale_ShowAlert (Ale_SUCCESS,Txt_The_question_has_been_moved_up);
}
else
Ale_ShowAlert (Ale_WARNING,Txt_Movement_not_allowed);
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/**************** Move down position of a question in a game *****************/
/*****************************************************************************/
void Gam_MoveDownQst (void)
{
extern const char *Txt_The_question_has_been_moved_down;
extern const char *Txt_Movement_not_allowed;
extern const char *Txt_This_game_has_no_questions;
struct Game Game;
unsigned QstIndTop;
unsigned QstIndBottom;
unsigned MaxQstInd; // 0 if no questions
/***** Get parameters *****/
if ((Game.GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Check if game has matches *****/
if (Gam_GetNumMchsGameAndCheckIfEditable (&Game))
{
/***** Get question index *****/
QstIndTop = Gam_GetParamQstInd ();
/***** Get maximum question index *****/
MaxQstInd = Gam_GetMaxQuestionIndexInGame (Game.GamCod);
/***** Move down question *****/
if (MaxQstInd)
{
if (QstIndTop < MaxQstInd)
{
/* Indexes of questions to be exchanged */
QstIndBottom = Gam_GetNextQuestionIndexInGame (Game.GamCod,QstIndTop);
if (!QstIndBottom)
Lay_ShowErrorAndExit ("Wrong index of question.");
/* Exchange questions */
Gam_ExchangeQuestions (Game.GamCod,QstIndTop,QstIndBottom);
/* Success alert */
Ale_ShowAlert (Ale_SUCCESS,Txt_The_question_has_been_moved_down);
}
else
Ale_ShowAlert (Ale_WARNING,Txt_Movement_not_allowed);
}
else
Ale_ShowAlert (Ale_WARNING,Txt_This_game_has_no_questions);
}
else
Lay_NoPermissionExit ();
/***** Show current game *****/
Gam_ShowOneGame (Game.GamCod,
true, // Show only this game
true, // List game questions
false); // Do not put form to start new match
}
/*****************************************************************************/
/********* Exchange the order of two consecutive questions in a game *********/
/*****************************************************************************/
static void Gam_ExchangeQuestions (long GamCod,
unsigned QstIndTop,unsigned QstIndBottom)
{
long QstCodTop;
long QstCodBottom;
/***** Lock table to make the move atomic *****/
DB_Query ("can not lock tables to move game question",
"LOCK TABLES gam_questions WRITE");
Gbl.DB.LockedTables = true;
/***** Get question code of the questions to be moved *****/
QstCodTop = Gam_GetQstCodFromQstInd (GamCod,QstIndTop);
QstCodBottom = Gam_GetQstCodFromQstInd (GamCod,QstIndBottom);
/***** Exchange indexes of questions *****/
/*
Example:
QstIndTop = 1; QstCodTop = 218
QstIndBottom = 2; QstCodBottom = 220
+--------+--------+ +--------+--------+ +--------+--------+
| QstInd | QstCod | | QstInd | QstCod | | QstInd | QstCod |
+--------+--------+ +--------+--------+ +--------+--------+
| 1 | 218 | -----> | 2 | 218 | = | 1 | 220 |
| 2 | 220 | | 1 | 220 | | 2 | 218 |
| 3 | 232 | | 3 | 232 | | 3 | 232 |
+--------+--------+ +--------+--------+ +--------+--------+
*/
DB_QueryUPDATE ("can not exchange indexes of questions",
"UPDATE gam_questions SET QstInd=%u"
" WHERE GamCod=%ld AND QstCod=%ld",
QstIndBottom,
GamCod,QstCodTop);
DB_QueryUPDATE ("can not exchange indexes of questions",
"UPDATE gam_questions SET QstInd=%u"
" WHERE GamCod=%ld AND QstCod=%ld",
QstIndTop,
GamCod,QstCodBottom);
/***** Unlock table *****/
Gbl.DB.LockedTables = false; // Set to false before the following unlock...
// ...to not retry the unlock if error in unlocking
DB_Query ("can not unlock tables after moving game questions",
"UNLOCK TABLES");
}
/*****************************************************************************/
/*********** Get number of matches and check is edition is possible **********/
/*****************************************************************************/
// Games with matches should not be edited
static bool Gam_GetNumMchsGameAndCheckIfEditable (struct Game *Game)
{
/***** Get number of matches *****/
Game->NumMchs = Mch_GetNumMchsInGame (Game->GamCod);
if (Gam_CheckIfICanEditGames ())
/***** Questions are editable only if game has no matches *****/
return (bool) (Game->NumMchs == 0);
else
return false; // Questions are not editable
}
/*****************************************************************************/
/********************* Put button to create a new match **********************/
/*****************************************************************************/
void Gam_PutButtonNewMatch (long GamCod)
{
extern const char *Txt_New_match;
Gam_SetParamCurrentGamCod (GamCod); // Used to pass parameter
Frm_StartFormAnchor (ActReqNewMch,Mch_NEW_MATCH_SECTION_ID);
Gam_PutParams ();
Btn_PutConfirmButton (Txt_New_match);
Frm_EndForm ();
}
/*****************************************************************************/
/************* Request the creation of a new match as a teacher **************/
/*****************************************************************************/
void Gam_RequestNewMatch (void)
{
long GamCod;
/***** Get parameters *****/
if ((GamCod = Gam_GetParams ()) == -1L)
Lay_ShowErrorAndExit ("Code of game is missing.");
/***** Show game *****/
Gam_ShowOneGame (GamCod,
true, // Show only this game
false, // Do not list game questions
true); // Put form to start new match
}
/*****************************************************************************/
/********************* Get number of courses with games **********************/
/*****************************************************************************/
// Returns the number of courses with games in this location
unsigned Gam_GetNumCoursesWithGames (Hie_Level_t Scope)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NumCourses;
/***** Get number of courses with games from database *****/
switch (Scope)
{
case Hie_SYS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM gam_games");
break;
case Hie_CTY:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT gam_games.CrsCod)"
" FROM institutions,centres,degrees,courses,gam_games"
" WHERE institutions.CtyCod=%ld"
" AND institutions.InsCod=centres.InsCod"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Ins.InsCod);
break;
case Hie_INS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT gam_games.CrsCod)"
" FROM centres,degrees,courses,gam_games"
" WHERE centres.InsCod=%ld"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Ins.InsCod);
break;
case Hie_CTR:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT gam_games.CrsCod)"
" FROM degrees,courses,gam_games"
" WHERE degrees.CtrCod=%ld"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Ctr.CtrCod);
break;
case Hie_DEG:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT gam_games.CrsCod)"
" FROM courses,gam_games"
" WHERE courses.DegCod=%ld"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Deg.DegCod);
break;
case Hie_CRS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with games",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM gam_games"
" WHERE CrsCod=%ld",
Gbl.Hierarchy.Crs.CrsCod);
break;
default:
Lay_WrongScopeExit ();
break;
}
/***** Get number of games *****/
row = mysql_fetch_row (mysql_res);
if (sscanf (row[0],"%u",&NumCourses) != 1)
Lay_ShowErrorAndExit ("Error when getting number of courses with games.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return NumCourses;
}
/*****************************************************************************/
/**************************** Get number of games ****************************/
/*****************************************************************************/
// Returns the number of games in this location
unsigned Gam_GetNumGames (Hie_Level_t Scope)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NumGames;
/***** Get number of games from database *****/
switch (Scope)
{
case Hie_SYS:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM gam_games");
break;
case Hie_CTY:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM institutions,centres,degrees,courses,gam_games"
" WHERE institutions.CtyCod=%ld"
" AND institutions.InsCod=centres.InsCod"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Cty.CtyCod);
break;
case Hie_INS:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM centres,degrees,courses,gam_games"
" WHERE centres.InsCod=%ld"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Ins.InsCod);
break;
case Hie_CTR:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM degrees,courses,gam_games"
" WHERE degrees.CtrCod=%ld"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Ctr.CtrCod);
break;
case Hie_DEG:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM courses,gam_games"
" WHERE courses.DegCod=%ld"
" AND courses.CrsCod=gam_games.CrsCod",
Gbl.Hierarchy.Deg.DegCod);
break;
case Hie_CRS:
DB_QuerySELECT (&mysql_res,"can not get number of games",
"SELECT COUNT(*)"
" FROM gam_games"
" WHERE CrsCod=%ld",
Gbl.Hierarchy.Crs.CrsCod);
break;
default:
Lay_WrongScopeExit ();
break;
}
/***** Get number of games *****/
row = mysql_fetch_row (mysql_res);
if (sscanf (row[0],"%u",&NumGames) != 1)
Lay_ShowErrorAndExit ("Error when getting number of games.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return NumGames;
}
/*****************************************************************************/
/************* Get average number of questions per course game ***************/
/*****************************************************************************/
double Gam_GetNumQstsPerCrsGame (Hie_Level_t Scope)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
double NumQstsPerGame;
/***** Get number of questions per game from database *****/
switch (Scope)
{
case Hie_SYS:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM gam_games,gam_questions"
" WHERE gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable");
break;
case Hie_CTY:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM institutions,centres,degrees,courses,gam_games,gam_questions"
" WHERE institutions.CtyCod=%ld"
" AND institutions.InsCod=centres.InsCod"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod"
" AND gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable",
Gbl.Hierarchy.Cty.CtyCod);
break;
case Hie_INS:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM centres,degrees,courses,gam_games,gam_questions"
" WHERE centres.InsCod=%ld"
" AND centres.CtrCod=degrees.CtrCod"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod"
" AND gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable",
Gbl.Hierarchy.Ins.InsCod);
break;
case Hie_CTR:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM degrees,courses,gam_games,gam_questions"
" WHERE degrees.CtrCod=%ld"
" AND degrees.DegCod=courses.DegCod"
" AND courses.CrsCod=gam_games.CrsCod"
" AND gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable",
Gbl.Hierarchy.Ctr.CtrCod);
break;
case Hie_DEG:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM courses,gam_games,gam_questions"
" WHERE courses.DegCod=%ld"
" AND courses.CrsCod=gam_games.CrsCod"
" AND gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable",
Gbl.Hierarchy.Deg.DegCod);
break;
case Hie_CRS:
DB_QuerySELECT (&mysql_res,"can not get number of questions per game",
"SELECT AVG(NumQsts) FROM"
" (SELECT COUNT(gam_questions.QstCod) AS NumQsts"
" FROM gam_games,gam_questions"
" WHERE gam_games.Cod=%ld"
" AND gam_games.GamCod=gam_questions.GamCod"
" GROUP BY gam_questions.GamCod) AS NumQstsTable",
Gbl.Hierarchy.Crs.CrsCod);
break;
default:
Lay_WrongScopeExit ();
break;
}
/***** Get number of courses *****/
row = mysql_fetch_row (mysql_res);
NumQstsPerGame = Str_GetDoubleNumFromStr (row[0]);
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return NumQstsPerGame;
}
/*****************************************************************************/
/************************* Show test tags in a game **************************/
/*****************************************************************************/
void Gam_ShowTstTagsPresentInAGame (long GamCod)
{
MYSQL_RES *mysql_res;
unsigned long NumTags;
/***** Get all tags of questions in this game *****/
NumTags = (unsigned)
DB_QuerySELECT (&mysql_res,"can not get tags"
" present in a match result",
"SELECT tst_tags.TagTxt" // row[0]
" FROM"
" (SELECT DISTINCT(tst_question_tags.TagCod)"
" FROM tst_question_tags,gam_questions"
" WHERE gam_questions.GamCod=%ld"
" AND gam_questions.QstCod=tst_question_tags.QstCod)"
" AS TagsCods,tst_tags"
" WHERE TagsCods.TagCod=tst_tags.TagCod"
" ORDER BY tst_tags.TagTxt",
GamCod);
Tst_ShowTagList (NumTags,mysql_res);
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
}
/*****************************************************************************/
/**************** Access to variable used to pass parameter ******************/
/*****************************************************************************/
void Gam_SetParamCurrentGamCod (long GamCod)
{
Gam_CurrentGamCod = GamCod;
}
static long Gam_GetParamCurrentGamCod (void)
{
return Gam_CurrentGamCod;
}
/*****************************************************************************/
/*************** Get maximum score of a game from database *******************/
/*****************************************************************************/
void Gam_GetScoreRange (long GamCod,double *MinScore,double *MaxScore)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NumRows;
unsigned NumRow;
unsigned NumAnswers;
/***** Get maximum score of a game from database *****/
NumRows = (unsigned)
DB_QuerySELECT (&mysql_res,"can not get data of a question",
"SELECT COUNT(tst_answers.AnsInd) AS N"
" FROM tst_answers,gam_questions"
" WHERE gam_questions.GamCod=%ld"
" AND gam_questions.QstCod=tst_answers.QstCod"
" GROUP BY tst_answers.QstCod",
GamCod);
for (NumRow = 0, *MinScore = *MaxScore = 0.0;
NumRow < NumRows;
NumRow++)
{
row = mysql_fetch_row (mysql_res);
/* Get min answers (row[0]) */
if (sscanf (row[0],"%u",&NumAnswers) != 1)
NumAnswers = 0;
/* Accumulate minimum and maximum score */
if (NumAnswers < 2)
Lay_ShowErrorAndExit ("Wrong number of answers.");
*MinScore += -1.0 / (double) (NumAnswers - 1);
*MaxScore += 1.0;
}
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
}
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