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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Plays the game bookquiz.
*
* @package mod_game
* @copyright 2007 Vasilis Daloukas
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Plays the game bookquiz.
*
* @param int $id
* @param stdClass $game
* @param stdClass $attempt
* @param stdClass $bookquiz
* @param int $chapterid
* @param stdClass $context
*/
function game_bookquiz_continue( $id, $game, $attempt, $bookquiz, $chapterid, $context) {
if ($attempt != false and $bookquiz != false) {
return game_bookquiz_play( $id, $game, $attempt, $bookquiz, $chapterid, $context);
}
if ($attempt == false) {
$attempt = game_addattempt( $game);
}
$bookquiz = new stdClass();
$bookquiz->lastchapterid = 0;
$bookquiz->id = $attempt->id;
$bookquiz->bookid = $game->bookid;
if ( !game_insert_record( 'game_bookquiz', $bookquiz)) {
print_error( 'game_bookquiz_continue: error inserting in game_bookquiz');
}
return game_bookquiz_play( $id, $game, $attempt, $bookquiz, 0, $context);
}
/**
* Plays the game bookquiz.
*
* @param int $id
* @param stdClass $game
* @param stdClass $attempt
* @param stdClass $bookquiz
* @param int $chapterid
* @param stdClass $context
*/
function game_bookquiz_play( $id, $game, $attempt, $bookquiz, $chapterid, $context) {
global $DB, $OUTPUT, $cm;
if ($bookquiz->lastchapterid == 0) {
game_bookquiz_play_computelastchapter( $game, $bookquiz);
if ($bookquiz->lastchapterid == 0) {
print_error( get_string( 'bookquiz_empty', 'game'));
}
}
if ($chapterid == 0) {
$chapterid = $bookquiz->lastchapterid;
} else {
if (($DB->set_field( 'game_bookquiz', 'lastchapterid', $chapterid, array( 'id' => $bookquiz->id))) == false) {
print_error( "Can't update table game_bookquiz with lastchapterid to $chapterid");
}
}
$book = $DB->get_record( 'book', array('id' => $game->bookid));
if (!$chapter = $DB->get_record( 'book_chapters', array('id' => $chapterid))) {
print_error('Error reading book chapters.');
}
$select = "bookid = $game->bookid AND hidden = 0";
$chapters = $DB->get_records_select('book_chapters', $select, null, 'pagenum', 'id, pagenum, subchapter, title, hidden');
$okchapters = array();
if (($recs = $DB->get_records( 'game_bookquiz_chapters', array( 'attemptid' => $attempt->id))) != false) {
foreach ($recs as $rec) {
// The 1 means correct answer.
$okchapters[ $rec->chapterid] = 1;
}
}
// The 2 means current.
$showquestions = false;
$a = array( 'gameid' => $game->id, 'chapterid' => $chapterid);
if (($questions = $DB->get_records( 'game_bookquiz_questions', $a)) === false) {
if (!array_key_exists( $chapterid, $okchapters)) {
$okchapters[ $chapterid] = 1;
$newrec = new stdClass();
$newrec->attemptid = $attempt->id;
$newrec->chapterid = $chapterid;
if (!$DB->insert_record( 'game_bookquiz_chapters', $newrec)) {
print_error( "Can't insert to table game_bookquiz_chapters");
}
}
} else {
// Have to select random one question.
$questionid = game_bookquiz_selectrandomquestion( $questions);
if ($questionid != 0) {
$showquestions = true;
}
}
// Prepare chapter navigation icons.
$previd = null;
$nextid = null;
$found = 0;
$scoreattempt = 0;
$lastid = 0;
foreach ($chapters as $ch) {
$scoreattempt++;
if ($found) {
$nextid = $ch->id;
break;
}
if ($ch->id == $chapter->id) {
$found = 1;
}
if (!$found) {
$previd = $ch->id;
}
$lastid = $ch->id;
}
if ($ch == current($chapters)) {
$nextid = $ch->id;
}
if (count( $chapters)) {
$scoreattempt = ($scoreattempt - 1) / count( $chapters);
}
$chnavigation = '';
if ($previd) {
$chnavigation .= '<a title="'.get_string('navprev', 'book').'" href="attempt.php?id='.$id.
'&chapterid='.$previd.'"><img src="'.$OUTPUT->pix_url('bookquiz/nav_prev', 'mod_game').
'" class="bigicon" alt="'.get_string('navprev', 'book').'"/></a>';
} else {
$chnavigation .= '<img src="'.$OUTPUT->pix_url('bookquiz/nav_prev_dis', 'mod_game').'" class="bigicon" alt="" />';
}
$nextbutton = '';
if ($nextid) {
if (!$showquestions) {
$chnavigation .= '<a title="'.get_string('navnext', 'book').'" href="attempt.php?id='.
$id.'&chapterid='.$nextid.'"><img src="'.
$OUTPUT->pix_url('bookquiz/nav_next', 'mod_game').'" class="bigicon" alt="'.get_string('navnext', 'book').'" ></a>';
$nextbutton = '<center>';
$nextbutton .= '<form name="form" method="get" action="attempt.php">';
$nextbutton .= '<input type="hidden" name="id" value="'.$id.'" >'."\r\n";
$nextbutton .= '<input type="hidden" name="chapterid" value="'.$nextid.'" >'."\r\n";
$nextbutton .= '<input type="submit" value="'.get_string( 'continue').'">';
$nextbutton .= '</center>';
$showquestions = false;
game_updateattempts_maxgrade( $game, $attempt, $scoreattempt, 0);
}
} else {
game_updateattempts_maxgrade( $game, $attempt, 1, 0);
$sec = '';
if (!isset( $cm)) {
$cm = get_coursemodule_from_instance('game', $game->id, $game->course);
}
if ($section = $DB->get_record('course_sections', array( 'id' => $cm->section))) {
$sec = $section->section;
}
if (! $cm = $DB->get_record('course_modules', array( 'id' => $id))) {
print_error("Course Module ID was incorrect id=$id");
}
$chnavigation .= '<a title="'.get_string('navexit', 'book').'" href="attempt.php?id='.
$id.'&chapterid='.$lastid.'><img src="'.$OUTPUT->pix_url('bookquiz/nav_exit', 'mod_game').
'" class="bigicon" alt="'.get_string('navexit', 'book').'" /></a>';
}
require( 'toc.php');
$tocwidth = '10%';
if ($showquestions) {
if ($game->param3 == 0) {
game_bookquiz_showquestions( $id, $questionid, $chapter->id, $nextid, $scoreattempt, $game, $context);
}
}
?>
<table border="0" cellspacing="0" width="100%" valign="top" cellpadding="2">
<!-- subchapter title and upper navigation row //-->
<tr>
<td width="<?php echo 10;?>" valign="bottom">
</td>
<td valign="top">
<table border="0" cellspacing="0" width="100%" valign="top" cellpadding="0">
<tr>
<td align="right"><?php echo $chnavigation ?></td>
</tr>
</table>
</td>
</tr>
<!-- toc and chapter row //-->
<tr>
<td width="<?php echo $tocwidth ?>" valign="top" align="left">
<?php
echo $OUTPUT->box_start('generalbox');
echo $toc;
echo $OUTPUT->box_end();
?>
</td>
<td valign="top" align="left">
<?php
echo $OUTPUT->box_start('generalbox');
$content = '';
if (!$book->customtitles) {
if ($currsubtitle == '&nbsp;') {
$content .= '<p class="book_chapter_title">'.$currtitle.'</p>';
} else {
$content .= '<p class="book_chapter_title">'.$currtitle.'<br />'.$currsubtitle.'</p>';
}
}
$cmbook = get_coursemodule_from_instance( 'book', $game->bookid, $game->course);
$modcontext = game_get_context_module_instance( $cmbook->id);
$content .= game_filterbook( $chapter->content, $chapter->id, $modcontext->id, $game->course);
$nocleanoption = new stdClass;
$nocleanoption->noclean = true;
echo '<div>';
if ($nextbutton != '') {
echo $nextbutton;
}
echo format_text($content, FORMAT_HTML, $nocleanoption);
if ($nextbutton != '') {
echo $nextbutton;
}
echo '</div>';
echo $OUTPUT->box_end();
// Lower navigation.
echo '<p align="right">'.$chnavigation.'</p>';
?>
</td>
</tr>
</table>
<?php
if ($showquestions) {
if ($game->param3 != 0) {
game_bookquiz_showquestions( $id, $questionid, $chapter->id, $nextid, $scoreattempt, $game, $context);
}
}
}
/**
* Computes the last chapter.
*
* @param stdClass $game
* @param stdClass $bookquiz
*/
function game_bookquiz_play_computelastchapter( $game, &$bookquiz) {
global $DB;
if ($game->bookid == 0) {
print_error( 'Not defined a book on this game');
}
$pagenum = $DB->get_field( 'book_chapters', 'min(pagenum) as p', array('bookid' => $game->bookid));
if ($pagenum) {
$bookquiz->lastchapterid = $DB->get_field( 'book_chapters', 'id', array('bookid' => $game->bookid, 'pagenum' => $pagenum));
if ($bookquiz->lastchapterid) {
// Update the data in table game_bookquiz.
if (($DB->set_field( 'game_bookquiz', 'lastchapterid', $bookquiz->lastchapterid,
array('id' => $bookquiz->id))) == false) {
print_error( "Can't update table game_bookquiz with lastchapterid to $bookquiz->lastchapterid");
}
}
}
}
/**
* Shows questions.
*
* @param int $id
* @param int $questionid
* @param int $chapterid
* @param int $nextchapterid
* @param int $scoreattempt
* @param stdClass $game
* @param stdClass $context
*/
function game_bookquiz_showquestions( $id, $questionid, $chapterid, $nextchapterid, $scoreattempt, $game, $context) {
$onlyshow = false;
$showsolution = false;
$questionlist = $questionid;
$questions = game_sudoku_getquestions( $questionlist);
global $CFG;
// Start the form.
echo "<form id=\"responseform\" method=\"post\" action=\"{$CFG->wwwroot}/mod/game/attempt.php\" ".
" onclick=\"this.autocomplete='off'\">\n";
if (($onlyshow === false) and ($showsolution === false)) {
echo "<center><input type=\"submit\" name=\"finishattempt\" value=\"".get_string('sudoku_submit', 'game')."\"></center>\n";
}
// Add a hidden field with the quiz id.
echo '<div>';
echo '<input type="hidden" name="id" value="' . s($id) . "\" />\n";
echo '<input type="hidden" name="action" value="bookquizcheck" />';
echo '<input type="hidden" name="chapterid" value="'.$chapterid.'" />';
echo '<input type="hidden" name="scoreattempt" value="'.$scoreattempt.'" />';
echo '<input type="hidden" name="nextchapterid" value="'.$nextchapterid.'" />';
// Print all the questions.
// Add a hidden field with questionids.
echo '<input type="hidden" name="questionids" value="'.$questionlist."\" />\n";
$number = 0;
foreach ($questions as $question) {
game_print_question( $game, $question, $context);
}
echo "</div>";
// Finish the form.
echo '</div>';
if (($onlyshow === false) and ($showsolution === false)) {
echo "<center><input type=\"submit\" name=\"finishattempt\" value=\"".get_string('sudoku_submit', 'game')."\"></center>\n";
}
echo "</form>\n";
}
/**
* Selects random one question from the input list.
*
* @param array $questions
*
* @return the position of the random question.
*/
function game_bookquiz_selectrandomquestion( $questions) {
global $DB;
$categorylist = '';
if ($questions == false) {
return 0;
}
foreach ($questions as $rec) {
$categorylist .= ',' . $rec->questioncategoryid;
}
$select = 'category in ('.substr( $categorylist, 1). ") AND qtype in ('shortanswer', 'truefalse', 'multichoice')";
if (($recs = $DB->get_records_select( 'question', $select, null, '', 'id,id')) == false) {
return 0;
}
$a = array();
foreach ($recs as $rec) {
$a[ $rec->id] = $rec->id;
}
if (count( $a) == 0) {
return 0;
} else {
return array_rand( $a);
}
}
/**
* Check if the answers are correct.
*
* @param int $id
* @param stdClass $game
* @param stdClass $attempt
* @param stdClass $bookquiz
* @param stdClass $context
*/
function game_bookquiz_check_questions( $id, $game, $attempt, $bookquiz, $context) {
global $USER, $DB;
$scoreattempt = optional_param('scoreattempt', 0, PARAM_INT);
$responses = data_submitted();
$questionlist = $responses->questionids;
$questions = game_sudoku_getquestions( $questionlist);
$grades = game_grade_questions( $questions);
$scorequestion = 0;
$scoreattempt = 0;
$chapterid = required_param('chapterid', PARAM_INT);
$nextchapterid = required_param('nextchapterid', PARAM_INT);
foreach ($questions as $question) {
if (!array_key_exists( $question->id, $grades)) {
// No answered.
continue;
}
$grade = $grades[ $question->id];
if ($grade->grade < 0.99) {
continue;
}
// Found one correct answer.
if (!$DB->get_field( 'game_bookquiz_chapters', 'id', array( 'attemptid' => $attempt->id, 'chapterid' => $chapterid))) {
$newrec = new stdClass();
$newrec->attemptid = $attempt->id;
$newrec->chapterid = $chapterid;
if (!$DB->insert_record( 'game_bookquiz_chapters', $newrec, false)) {
print_error( "Can't insert to table game_bookquiz_chapters");
}
}
// Have to go to next page.
$bookquiz->lastchapterid = $nextchapterid;
$scorequestion = 1;
break;
}
$query = new stdClass();
$query->id = 0;
$query->attemptid = $attempt->id;
$query->gameid = $game->id;
$query->userid = $USER->id;
$query->sourcemodule = 'question';
$query->questionid = $question->id;
$query->glossaryentryid = 0;
$query->questiontext = $question->questiontext;
$query->timelastattempt = time();
game_update_queries( $game, $attempt, $query, $scorequestion, '');
game_updateattempts( $game, $attempt, $scoreattempt, 0);
game_bookquiz_continue( $id, $game, $attempt, $bookquiz, $bookquiz->lastchapterid, $context);
}