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moodle-mod_game/lib.php

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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/>.
/**
* Library of functions and constants for module game
*
* @author
* @version $Id: lib.php,v 1.36 2012/07/25 11:16:03 bdaloukas Exp $
* @package game
**/
// Define CONSTANTS.
/*
* Options determining how the grades from individual attempts are combined to give
* the overall grade for a user
*/
define('GAME_GRADEHIGHEST', 1);
define('GAME_GRADEAVERAGE', 2);
define('GAME_ATTEMPTFIRST', 3);
define('GAME_ATTEMPTLAST', 4);
// The different review options are stored in the bits of $game->review.
// These constants help to extract the options.
define('GAME_REVIEW_IMMEDIATELY', 0x3f); // The first 6 bits refer to the time immediately after the attempt.
define('GAME_REVIEW_OPEN', 0xfc0); // The next 6 bits refer to the time after the attempt but while the game is open.
define('GAME_REVIEW_CLOSED', 0x3f000); // The final 6 bits refer to the time after the game closes.
// Within each group of 6 bits we determine what should be shown.
define('GAME_REVIEW_RESPONSES', 1 * 0x1041); // Show responses.
define('GAME_REVIEW_SCORES', 2 * 0x1041); // Show scores.
define('GAME_REVIEW_FEEDBACK', 4 * 0x1041); // Show feedback.
define('GAME_REVIEW_ANSWERS', 8 * 0x1041); // Show correct answers.
// Some handling of worked solutions is already in the code but not yet fully supported.
// and not switched on in the user interface.
define('GAME_REVIEW_SOLUTIONS', 16 * 0x1041); // Show solutions.
define('GAME_REVIEW_GENERALFEEDBACK', 32 * 0x1041); // Show general feedback.
/**
* Given an object containing all the necessary data,
* (defined by the form in mod.html) this function
* will create a new instance and return the id number
* of the new instance.
*
* @param object $instance An object from the form in mod.html
* @return int The id of the newly inserted game record
**/
function game_add_instance($game) {
global $DB;
$game->timemodified = time();
game_before_add_or_update( $game);
// May have to add extra stuff in here.
$id = $DB->insert_record("game", $game);
$game = $DB->get_record_select( 'game', "id=$id");
// Do the processing required after an add or an update.
game_grade_item_update( $game);
return $id;
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod.html) this function
* will update an existing instance with new data.
*
* @param object $instance An object from the form in mod.html
* @return boolean Success/Fail
**/
function game_update_instance($game) {
global $DB;
$game->timemodified = time();
$game->id = $game->instance;
if (!isset( $game->glossarycategoryid)) {
$game->glossarycategoryid = 0;
}
if (!isset( $game->glossarycategoryid2)) {
$game->glossarycategoryid2 = 0;
}
if ($game->grade == '') {
$game->grade = 0;
}
if (!isset( $game->param1)) {
$game->param1 = 0;
}
if ($game->param1 == '') {
$game->param1 = 0;
}
if (!isset( $game->param2)) {
$game->param2 = 0;
}
if ($game->param2 == '') {
$game->param2 = 0;
}
if (!isset( $game->questioncategoryid)) {
$game->questioncategoryid = 0;
}
game_before_add_or_update( $game);
if (!$DB->update_record("game", $game)) {
return false;
}
// Do the processing required after an add or an update.
game_grade_item_update( $game);
return true;
}
function game_before_add_or_update(&$game) {
if (isset( $game->questioncategoryid)) {
$pos = strpos( $game->questioncategoryid, ',');
if ($pos != false) {
$game->questioncategoryid = substr( $game->questioncategoryid, 0, $pos);
}
}
if ($game->gamekind == 'millionaire') {
$pos = strpos( '-'.$game->param8, '#');
if ($pos > 0) {
$game->param8 = hexdec(substr( $game->param8, $pos));
}
} else if ($game->gamekind == 'snakes') {
$s = '';
if ($game->param3 == 0) {
// Means user defined.
$draftitemid = $game->param4;
if (isset( $game->id)) {
$cmg = get_coursemodule_from_instance('game', $game->id, $game->course);
$modcontext = game_get_context_module_instance( $cmg->id);
$attachmentoptions = array('subdirs' => 0, 'maxbytes' => 9999999, 'maxfiles' => 1);
file_save_draft_area_files($draftitemid, $modcontext->id, 'mod_game', 'snakes_file', $game->id,
array('subdirs' => 0, 'maxbytes' => 9999999, 'maxfiles' => 1));
$game->param5 = 1;
}
if (isset( $_POST[ 'snakes_cols'])) {
$fields = array( 'snakes_data', 'snakes_cols', 'snakes_rows', 'snakes_headerx', 'snakes_headery',
'snakes_footerx', 'snakes_footery', 'snakes_width', 'snakes_height');
foreach ($fields as $f) {
$s .= '#'.$f.':'.$_POST[ $f];
}
$s = substr( $s, 1);
}
}
$game->param9 = $s;
}
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @param int $id Id of the module instance
* @return boolean Success/Failure
**/
function game_delete_instance($gameid) {
global $DB;
// Delete any dependent records here.
$aids = array();
if (($recs = $DB->get_records( 'game_attempts', array( 'gameid' => $gameid))) != false) {
$ids = '';
$count = 0;
foreach ($recs as $rec) {
$ids .= ( $ids == '' ? $rec->id : ','.$rec->id);
if (++$count > 10) {
$aids[] = $ids;
$count = 0;
$ids = '';
}
}
if ($ids != '') {
$aids[] = $ids;
}
}
foreach ($aids as $ids) {
$tables = array( 'game_hangman', 'game_cross', 'game_cryptex', 'game_millionaire',
'game_bookquiz', 'game_sudoku', 'game_snakes');
foreach ($tables as $t) {
$sql = "DELETE FROM {".$t."} WHERE id IN (".$ids.')';
if (!$DB->execute( $sql)) {
return false;
}
}
}
$tables = array( 'game_attempts', 'game_grades', 'game_bookquiz_questions', 'game_queries', 'game_repetitions');
foreach ($tables as $t) {
if (!$DB->delete_records( $t, array( 'gameid' => $gameid))) {
return false;
}
}
$tables = array( 'game_export_javame', 'game_export_html', 'game');
foreach ($tables as $table) {
if (!$DB->delete_records( $table, array( 'id' => $gameid))) {
return false;
}
}
return true;
}
/**
* Return a small object with summary information about what a
* user has done with a given particular instance of this module
* Used for user activity reports.
* $return->time = the time they did it
* $return->info = a short text description
**/
function game_user_outline($course, $user, $mod, $game) {
global $DB;
if ($grade = $DB->get_record_select('game_grades', "userid=$user->id AND gameid = $game->id", null, 'id,score,timemodified')) {
$result = new stdClass;
if ((float)$grade->score) {
$result->info = get_string('grade').':&nbsp;'.round($grade->score * $game->grade, $game->decimalpoints).' '.
get_string('percent', 'game').':&nbsp;'.round(100 * $grade->score, $game->decimalpoints).' %';
}
$result->time = $grade->timemodified;
return $result;
}
return null;
}
/**
* Print a detailed representation of what a user has done with
* a given particular instance of this module, for user activity reports.
**/
function game_user_complete($course, $user, $mod, $game) {
global $DB;
if ($attempts = $DB->get_records_select('game_attempts', "userid='$user->id' AND gameid='$game->id'", null, 'attempt ASC')) {
if ($game->grade && $grade = $DB->get_record('game_grades', array( 'userid' => $user->id, 'gameid' => $game->id))) {
echo get_string('grade').': '.game_format_score( $game, $grade->score).'/'.$game->grade.'<br />';
}
foreach ($attempts as $attempt) {
echo get_string('attempt', 'game').' '.$attempt->attempt.': ';
if ($attempt->timefinish == 0) {
print_string( 'unfinished');
} else {
echo game_format_score( $game, $attempt->score).'/'.$game->grade;
}
echo ' - '.userdate($attempt->timelastattempt).'<br />';
}
} else {
print_string('noattempts', 'game');
}
return true;
}
/**
* Given a course and a time, this module should find recent activity
* that has occurred in game activities and print it out.
* Return true if there was output, or false is there was none.
*
* @uses $CFG
* @return boolean
* @todo Finish documenting this function
**/
function game_print_recent_activity($course, $isteacher, $timestart) {
global $CFG;
return false; // True if anything was printed, otherwise false.
}
/**
* Function to be run periodically according to the moodle cron
* This function searches for things that need to be done, such
* as sending out mail, toggling flags etc ...
*
* @uses $CFG
* @return boolean
* @todo Finish documenting this function
**/
function game_cron() {
global $CFG;
return true;
}
/**
* Must return an array of grades for a given instance of this module,
* indexed by user. It also returns a maximum allowed grade.
*
* Example:
* $return->grades = array of grades;
* $return->maxgrade = maximum allowed grade;
*
* return $return;
*
* @param int $gameid ID of an instance of this module
* @return mixed Null or object with an array of grades and with the maximum grade
**/
function game_grades($gameid) {
// Must return an array of grades, indexed by user, and a max grade.
global $DB;
$game = $DB->get_record( 'game', array( 'id' => intval($gameid)));
if (empty($game) || empty($game->grade)) {
return null;
}
$return = new stdClass;
$return->grades = $DB->get_records_menu('game_grades', 'gameid', $game->id, '', "userid, score * {$game->grade}");
$return->maxgrade = $game->grade;
return $return;
}
/**
* Return grade for given user or all users.
*
* @param int $gameid id of game
* @param int $userid optional user id, 0 means all users
* @return array array of grades, false if none
*/
function game_get_user_grades($game, $userid=0) {
global $DB;
$user = $userid ? "AND u.id = $userid" : "";
$sql = 'SELECT u.id, u.id AS userid, '.$game->grade.
' * g.score AS rawgrade, g.timemodified AS dategraded, MAX(a.timefinish) AS datesubmitted
FROM {user} u, {game_grades} g, {game_attempts} a
WHERE u.id = g.userid AND g.gameid = '.$game->id.' AND a.gameid = g.gameid AND u.id = a.userid';
if ($userid != 0) {
$sql .= ' AND u.id='.$userid;
}
$sql .= ' GROUP BY u.id, g.score, g.timemodified';
return $DB->get_records_sql( $sql);
}
/**
* Must return an array of user records (all data) who are participants
* for a given instance of game. Must include every user involved
* in the instance, independient of his role (student, teacher, admin...)
* See other modules as example.
*
* @param int $gameid ID of an instance of this module
* @return mixed boolean/array of students
**/
function game_get_participants($gameid) {
return false;
}
/**
* This function returns if a scale is being used by one game
* it it has support for grading and scales. Commented code should be
* modified if necessary. See forum, glossary or journal modules
* as reference.
*
* @param int $gameid ID of an instance of this module
* @return mixed
* @todo Finish documenting this function
**/
function game_scale_used ($gameid, $scaleid) {
$return = false;
return $return;
}
/**
* Update grades in central gradebook
*
* @param object $game null means all games
* @param int $userid specific user only, 0 mean all
*/
function game_update_grades($game=null, $userid=0, $nullifnone=true) {
global $CFG;
if (!function_exists('grade_update')) { // Workaround for buggy PHP versions.
if (file_exists( $CFG->libdir.'/gradelib.php')) {
require_once($CFG->libdir.'/gradelib.php');
} else {
return;
}
}
if ($game != null) {
if ($grades = game_get_user_grades($game, $userid)) {
game_grade_item_update($game, $grades);
} else if ($userid and $nullifnone) {
$grade = new object();
$grade->userid = $userid;
$grade->rawgrade = null;
game_grade_item_update( $game, $grade);
} else {
game_grade_item_update( $game);
}
} else {
$sql = "SELECT a.*, cm.idnumber as cmidnumber, a.course as courseid
FROM {game} a, {course_modules} cm, {modules} m
WHERE m.name='game' AND m.id=cm.module AND cm.instance=a.id";
if ($rs = $DB->get_recordset_sql( $sql)) {
while ($game = $DB->rs_fetch_next_record( $rs)) {
if ($game->grade != 0) {
game_update_grades( $game, 0, false);
} else {
game_grade_item_update( $game);
}
}
$DB->rs_close( $rs);
}
}
}
/**
* Create grade item for given game
*
* @param object $game object with extra cmidnumber
* @param mixed optional array/object of grade(s); 'reset' means reset grades in gradebook
* @return int 0 if ok, error code otherwise
*/
function game_grade_item_update($game, $grades=null) {
global $CFG;
if (!function_exists('grade_update')) { // Workaround for buggy PHP versions.
if (file_exists( $CFG->libdir.'/gradelib.php')) {
require_once($CFG->libdir.'/gradelib.php');
} else {
return;
}
}
if (array_key_exists('cmidnumber', $game)) { // Tt may not be always present.
$params = array('itemname' => $game->name, 'idnumber' => $game->cmidnumber);
} else {
$params = array('itemname' => $game->name);
}
if ($game->grade > 0) {
$params['gradetype'] = GRADE_TYPE_VALUE;
$params['grademax'] = $game->grade;
$params['grademin'] = 0;
} else {
$params['gradetype'] = GRADE_TYPE_NONE;
}
if ($grades === 'reset') {
$params['reset'] = true;
$grades = null;
}
return grade_update('mod/game', $game->course, 'mod', 'game', $game->id, 0, $grades, $params);
}
/**
* Delete grade item for given game
*
* @param object $game object
* @return object game
*/
function game_grade_item_delete( $game) {
global $CFG;
if (file_exists( $CFG->libdir.'/gradelib.php')) {
require_once($CFG->libdir.'/gradelib.php');
} else {
return;
}
return grade_update('mod/game', $game->course, 'mod', 'game', $game->id, 0, null, array('deleted' => 1));
}
/**
* Returns all game graded users since a given time for specified game
*/
function game_get_recent_mod_activity(&$activities, &$index, $timestart, $courseid, $cmid, $userid=0, $groupid=0) {
global $DB, $COURSE, $USER;
if ($COURSE->id == $courseid) {
$course = $COURSE;
} else {
$course = $DB->get_record('course', array( 'id' => $courseid));
}
$modinfo = get_fast_modinfo($course);
$cm = $modinfo->cms[$cmid];
if ($userid) {
$userselect = "AND u.id = $userid";
} else {
$userselect = "";
}
if ($groupid) {
$groupselect = "AND gm.groupid = $groupid";
$groupjoin = "JOIN {groups_members} gm ON gm.userid=u.id";
} else {
$groupselect = "";
$groupjoin = "";
}
if (!$attempts = $DB->get_records_sql("SELECT qa.*, qa.gameid, q.grade, u.lastname,".
" u.firstname, firstnamephonetic, u.lastnamephonetic, u.middlename, u.alternatename,".
" u.lastnamephonetic, u.picture
FROM {game_attempts} qa
JOIN {game} q ON q.id = qa.gameid
JOIN {user} u ON u.id = qa.userid
$groupjoin
WHERE qa.timefinish > $timestart AND q.id = $cm->instance
$userselect $groupselect
ORDER BY qa.timefinish ASC")) {
return;
}
$cmcontext = game_get_context_module_instance( $cm->id);
$grader = has_capability('moodle/grade:viewall', $cmcontext);
$accessallgroups = has_capability('moodle/site:accessallgroups', $cmcontext);
$viewfullnames = has_capability('moodle/site:viewfullnames', $cmcontext);
$groupmode = groups_get_activity_groupmode($cm, $course);
if (is_null($modinfo->groups)) {
$modinfo->groups = groups_get_user_groups($course->id); // Load all my groups and cache it in modinfo.
}
$aname = format_string($cm->name, true);
foreach ($attempts as $attempt) {
if ($attempt->userid != $USER->id) {
if (!$grader) {
// Grade permission required.
continue;
}
if ($groupmode == SEPARATEGROUPS and !$accessallgroups) {
$usersgroups = groups_get_all_groups($course->id, $attempt->userid, $cm->groupingid);
if (!is_array($usersgroups)) {
continue;
}
$usersgroups = array_keys($usersgroups);
$interset = array_intersect($usersgroups, $modinfo->groups[$cm->id]);
if (empty($intersect)) {
continue;
}
}
}
$tmpactivity = new object();
$tmpactivity->type = 'game';
$tmpactivity->gameid = $attempt->gameid;
$tmpactivity->cmid = $cm->id;
$tmpactivity->name = $aname;
$tmpactivity->sectionnum = $cm->sectionnum;
$tmpactivity->timestamp = $attempt->timefinish;
$tmpactivity->content = new object();
$tmpactivity->content->attemptid = $attempt->id;
$tmpactivity->content->sumgrades = $attempt->score * $attempt->grade;
$tmpactivity->content->maxgrade = $attempt->grade;
$tmpactivity->content->attempt = $attempt->attempt;
$tmpactivity->user = new object();
$tmpactivity->user->userid = $tmpactivity->user->id = $attempt->userid;
$tmpactivity->user->fullname = fullname($attempt, $viewfullnames);
$tmpactivity->user->firstname = $attempt->firstname;
$tmpactivity->user->lastname = $attempt->lastname;
$tmpactivity->user->alternatename = $attempt->alternatename;
$tmpactivity->user->middlename = $attempt->middlename;
$tmpactivity->user->firstnamephonetic = $attempt->firstnamephonetic;
$tmpactivity->user->lastnamephonetic = $attempt->lastnamephonetic;
$tmpactivity->user->picture = $attempt->picture;
$tmpactivity->user->imagealt = $attempt->imagealt;
$tmpactivity->user->email = $attempt->email;
$activities[$index++] = $tmpactivity;
}
}
function game_print_recent_mod_activity($activity, $courseid, $detail, $modnames) {
global $CFG, $OUTPUT;
echo '<table border="0" cellpadding="3" cellspacing="0" class="forum-recent">';
echo "<tr><td class=\"userpicture\" valign=\"top\">";
echo $OUTPUT->user_picture($activity->user, array('courseid' => $courseid));
echo "</td><td>";
if ($detail) {
$modname = $modnames[$activity->type];
echo '<div class="title">';
echo "<img src=\"$CFG->modpixpath/{$activity->type}/icon.gif\" ".
"class=\"icon\" alt=\"$modname\" />";
echo "<a href=\"{$CFG->wwwroot}/mod/game/view.php?id={$activity->cmid}\">{$activity->name}</a>";
echo '</div>';
}
echo '<div class="grade">';
echo get_string("attempt", "game")." {$activity->content->attempt}: ";
$grades = "({$activity->content->sumgrades} / {$activity->content->maxgrade})";
echo "<a href=\"{$CFG->wwwroot}/mod/game/review.php".
"?attempt={$activity->content->attemptid}&q={$activity->gameid}\">$grades</a>";
echo '</div>';
echo '<div class="user">';
echo "<a href=\"{$CFG->wwwroot}/user/view.php?id={$activity->user->userid}&amp;course=$courseid\">"
."{$activity->user->fullname}</a> - ".userdate($activity->timestamp);
echo '</div>';
echo "</td></tr></table>";
}
/**
* Removes all grades from gradebook
* @param int $courseid
* @param string optional type
*/
function game_reset_gradebook($courseid, $type='') {
global $DB;
$sql = "SELECT q.*, cm.idnumber as cmidnumber, q.course as courseid
FROM {game} q, {course_modules} cm, {modules} m
WHERE m.name='game' AND m.id=cm.module AND cm.instance=q.id AND q.course=$courseid";
if ($games = $DB->get_records_sql( $sql)) {
foreach ($games as $game) {
game_grade_item_update( $game, 'reset');
}
}
}
/**
* @uses FEATURE_GRADE_HAS_GRADE
* @return bool True if quiz supports feature
*/
function game_supports($feature) {
switch($feature) {
case FEATURE_GRADE_HAS_GRADE:
return true;
case FEATURE_GROUPS:
return true;
case FEATURE_GROUPINGS:
return true;
case FEATURE_GROUPMEMBERSONLY:
return true;
case FEATURE_MOD_INTRO:
return false;
case FEATURE_COMPLETION_TRACKS_VIEWS:
return true;
case FEATURE_COMPLETION_HAS_RULES:
return true;
case FEATURE_GRADE_HAS_GRADE:
return true;
case FEATURE_GRADE_OUTCOMES:
return true;
case FEATURE_RATE:
return false;
case FEATURE_BACKUP_MOODLE2:
return true;
default:
return null;
}
}
/**
* @global object
* @global stdClass
* @return array all other caps used in module
*/
function game_get_extra_capabilities() {
global $DB, $CFG;
require_once($CFG->libdir.'/questionlib.php');
$caps = question_get_all_capabilities();
$reportcaps = $DB->get_records_select_menu('capabilities', 'name LIKE ?', array('quizreport/%'), 'id,name');
$caps = array_merge($caps, $reportcaps);
$caps[] = 'moodle/site:accessallgroups';
return $caps;
}
/**
* Return a textual summary of the number of attemtps that have been made at a particular game,
* returns '' if no attemtps have been made yet, unless $returnzero is passed as true.
*
* @global stdClass
* @global object
* @global object
* @param object $game the game object. Only $game->id is used at the moment.
* @param object $cm the cm object. Only $cm->course, $cm->groupmode and $cm->groupingid fields are used at the moment.
* @param boolean $returnzero if false (default), when no attempts have been made '' is returned instead of 'Attempts: 0'.
* @param int $currentgroup if there is a concept of current group where this method is being called
* (e.g. a report) pass it in here. Default 0 which means no current group.
* @return string a string like "Attempts: 123", "Attemtps 123 (45 from your groups)" or
* "Attemtps 123 (45 from this group)".
*/
function game_num_attempt_summary($game, $cm, $returnzero = false, $currentgroup = 0) {
global $CFG, $USER, $DB;
$numattempts = $DB->count_records('game_attempts', array('gameid' => $game->id, 'preview' => 0));
if ($numattempts || $returnzero) {
if (groups_get_activity_groupmode($cm)) {
$a = new stdClass();
$a->total = $numattempts;
if ($currentgroup) {
$a->group = $DB->count_records_sql('SELECT count(1) FROM ' .
'{game_attempts} qa JOIN ' .
'{groups_members} gm ON qa.userid = gm.userid ' .
'WHERE gameid = ? AND preview = 0 AND groupid = ?', array($game->id, $currentgroup));
return get_string('attemptsnumthisgroup', 'quiz', $a);
} else if ($groups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid)) {
list($usql, $params) = $DB->get_in_or_equal(array_keys($groups));
$a->group = $DB->count_records_sql('SELECT count(1) FROM ' .
'{game_attempts} qa JOIN ' .
'{groups_members} gm ON qa.userid = gm.userid ' .
'WHERE gameid = ? AND preview = 0 AND ' .
"groupid $usql", array_merge(array($game->id), $params));
return get_string('attemptsnumyourgroups', 'quiz', $a);
}
}
return get_string('attemptsnum', 'quiz', $numattempts);
}
return '';
}
function game_format_score($game, $score) {
return format_float($game->grade * $score / 100, $game->decimalpoints);
}
function game_format_grade($game, $grade) {
return format_float($grade, $game->decimalpoints);
}
/**
* @return the options for calculating the quiz grade from the individual attempt grades.
*/
function game_get_grading_options() {
return array (
GAME_GRADEHIGHEST => get_string('gradehighest', 'quiz'),
GAME_GRADEAVERAGE => get_string('gradeaverage', 'quiz'),
GAME_ATTEMPTFIRST => get_string('attemptfirst', 'quiz'),
GAME_ATTEMPTLAST => get_string('attemptlast', 'quiz'));
}
/**
* This function extends the settings navigation block for the site.
*
* It is safe to rely on PAGE here as we will only ever be within the module
* context when this is called
*
* @param settings_navigation $settings
* @param navigation_node $quiznode
* @return void
*/
function game_extend_settings_navigation($settings, $gamenode) {
global $PAGE, $CFG, $DB;
$context = $PAGE->cm->context;
if (!has_capability('mod/game:viewreports', $context)) {
return;
}
if (has_capability('mod/game:view', $context)) {
$url = new moodle_url('/mod/game/view.php', array('id' => $PAGE->cm->id));
$gamenode->add(get_string('info', 'game'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/info', ''));
}
if (has_capability('mod/game:manage', $context)) {
$url = new moodle_url('/course/modedit.php', array('update' => $PAGE->cm->id, 'return' => true, 'sesskey' => sesskey()));
$gamenode->add(get_string('edit', 'moodle', ''), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('t/edit', ''));
}
if (has_capability('mod/game:viewreports', $context)) {
$url = new moodle_url('/mod/game/showanswers.php', array('q' => $PAGE->cm->instance));
$reportnode = $gamenode->add(get_string('showanswers', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/item', ''));
}
if (has_capability('mod/game:viewreports', $context)) {
$url = new moodle_url('/mod/game/showattempts.php', array('q' => $PAGE->cm->instance));
$reportnode = $gamenode->add(get_string('showattempts', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('f/explore', ''));
}
if (has_capability('mod/game:viewreports', $context)) {
$game = $DB->get_record('game', array("id" => $PAGE->cm->instance));
$courseid = $game->course;
switch( $game->gamekind) {
case 'bookquiz':
$url = new moodle_url('/mod/game/bookquiz/questions.php', array('q' => $PAGE->cm->instance));
$exportnode = $gamenode->add( get_string('bookquiz_questions', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/item', ''));
break;
case 'hangman':
$url = new moodle_url('', null);
$exportnode = $gamenode->add( get_string('export', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/report', ''));
$url = new moodle_url('/mod/game/export.php', array( 'id' => $PAGE->cm->id,
'courseid' => $courseid, 'target' => 'html'));
$exportnode->add( get_string('export_to_html', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/item', ''));
$url = new moodle_url('/mod/game/export.php', array( 'id' => $PAGE->cm->id,
'courseid' => $courseid, 'target' => 'javame'));
$exportnode->add( get_string('export_to_javame', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/item', ''));
break;
case 'snakes':
case 'cross':
case 'millionaire':
$url = new moodle_url('/mod/game/export.php', array( 'q' => $game->id,
'courseid' => $courseid, 'target' => 'html'));
$gamenode->add(get_string('export_to_html', 'game'), $url, navigation_node::TYPE_SETTING,
null, null, new pix_icon('i/item', ''));
break;
}
}
}
/**
* Returns an array of game type objects to construct
* menu list when adding new game
*
*/
function game_get_types() {
global $DB;
$config = get_config('game');
$types = array();
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game_group_start";
$type->typestr = '--'.get_string( 'modulenameplural', 'game');
$types[] = $type;
$hide = ( isset( $config->hidehangman) ? ($config->hidehangman != 0) : false);
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=hangman";
$type->typestr = get_string('game_hangman', 'game');
$types[] = $type;
}
if (isset( $config->hidecross)) {
$hide = ($config->hidecross != 0);
} else {
$hide = false;
}
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=cross";
$type->typestr = get_string('game_cross', 'game');
$types[] = $type;
}
if (isset( $config->hidecryptex)) {
$hide = ($config->hidecryptex != 0);
} else {
$hide = false;
}
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=cryptex";
$type->typestr = get_string('game_cryptex', 'game');
$types[] = $type;
}
$hide = (isset( $config->hidemillionaire) ? ($config->hidemillionaire != 0) : false);
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=millionaire";
$type->typestr = get_string('game_millionaire', 'game');
$types[] = $type;
}
$hide = (isset( $config->hidesudoku) ? ($config->hidesudoku != 0) : false);
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=sudoku";
$type->typestr = get_string('game_sudoku', 'game');
$types[] = $type;
}
$hide = (isset( $config->hidesnakes) ? ($config->hidesnakes != 0) : false);
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=snakes";
$type->typestr = get_string('game_snakes', 'game');
$types[] = $type;
}
$hide = (isset( $config->hidehiddenpicture) ? ($config->hidehiddenpicture != 0) : false);
if ($hide == false) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=hiddenpicture";
$type->typestr = get_string('game_hiddenpicture', 'game');
$types[] = $type;
}
$hide = (isset( $config->hidebookquiz) ? ($config->hidebookquiz != 0) : false);
if ($hide == false) {
if ($DB->get_record( 'modules', array( 'name' => 'book'), 'id,id')) {
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game&amp;type=bookquiz";
$type->typestr = get_string('game_bookquiz', 'game');
$types[] = $type;
}
}
$type = new object();
$type->modclass = MOD_CLASS_ACTIVITY;
$type->type = "game_group_end";
$type->typestr = '--';
$types[] = $type;
return $types;
}
function mod_game_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
global $CFG, $DB;
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_course_login($course, true, $cm);
if ($filearea == 'questiontext') {
$questionid = $args[ 0];
$file = $args[ 1];
$a = explode( '/', $context->path);
if (!$contextcourse = game_get_context_course_instance( $course->id)) {
print_error('nocontext');
}
$a = array( 'component' => 'question', 'filearea' => 'questiontext',
'itemid' => $questionid, 'filename' => $file, 'contextid' => $contextcourse->id);
$rec = $DB->get_record( 'files', $a);
$fs = get_file_storage();
if (!$file = $fs->get_file_by_hash($rec->pathnamehash) or $file->is_directory()) {
return false;
}
// Finally send the file.
send_stored_file($file, 0, 0, true); // download MUST be forced - security!
} else if ($filearea == 'answer') {
$answerid = $args[ 0];
$file = $args[ 1];
if (!$contextcourse = game_get_context_course_instance( $course->id)) {
print_error('nocontext');
}
$rec = $DB->get_record( 'files', array( 'component' => 'question', 'filearea' => 'answer',
'itemid' => $answerid, 'filename' => $file, 'contextid' => $contextcourse->id));
$fs = get_file_storage();
if (!$file = $fs->get_file_by_hash($rec->pathnamehash) or $file->is_directory()) {
return false;
}
// Finally send the file.
send_stored_file($file, 0, 0, true); // Download MUST be forced - security!
}
$filearea = $args[ 0];
$filename = $args[ 1];
$fs = get_file_storage();
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_game/$filearea/$cm->instance/$filename";
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// Finally send the file.
send_stored_file($file, 0, 0, true); // download MUST be forced - security!
}
/**
* Implementation of the function for printing the form elements that control
* whether the course reset functionality affects the Game.
* @param object $mform form passed by reference
*/
function game_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'gameheader', get_string('modulenameplural', 'game'));
$mform->addElement('checkbox', 'reset_game_all', get_string('reset_game_all', 'game'));
$mform->addElement('checkbox', 'reset_game_deleted_course', get_string('reset_game_deleted_course', 'game'));
}
/**
* Course reset form defaults.
* @return array
*/
function game_reset_course_form_defaults($course) {
return array('reset_game_all' => 0, 'reset_game_deleted_course' => 0);
}
/**
* Actual implementation of the reset course functionality, delete all the
* Game responses for course $data->courseid.
*
* @global object
* @param $data the data submitted from the reset course.
* @return array status array
*/
function game_reset_userdata($data) {
global $DB;
$componentstr = get_string('modulenameplural', 'game');
$status = array();
$fs = get_file_storage();
for ($i = 1; $i <= 2; $i++) {
if ($i == 1) {
if (empty($data->reset_game_all)) {
continue;
}
$allgamessql = 'SELECT g.id FROM {game} g WHERE g.course = '.$data->courseid;
$allattemptssql = 'SELECT ga.id FROM {game} g LEFT JOIN {game_attempts} ga ON g.id = ga.gameid WHERE g.course = '.
$data->courseid;
$newstatus = array('component' => $componentstr, 'item' => get_string('reset_game_all', 'game'), 'error' => false);
} else if ($i == 2) {
if (empty($data->reset_game_deleted_course)) {
continue;
}
$allgamessql = 'SELECT g.id FROM {game} g WHERE NOT EXISTS( SELECT * FROM {course} c WHERE c.id = g.course)';
$allattemptssql = 'SELECT ga.id FROM {game_attempts} ga '.
'WHERE NOT EXISTS( SELECT * FROM {game} g WHERE ga.gameid = g.id)';
$newstatus = array('component' => $componentstr, 'item' => get_string('reset_game_deleted_course', 'game'),
'error' => false);
}
$recs = $DB->get_recordset_sql($allgamessql);
if ($recs->valid()) {
foreach ($recs as $rec) {
if (!$cm = get_coursemodule_from_instance('game', $rec->id)) {
continue;
}
$context = game_get_context_module_instance( $cm->id);
$fs->delete_area_files($context->id, 'mod_game', 'gnakes_file');
$fs->delete_area_files($context->id, 'mod_game', 'gnakes_board');
// Reset grades.
$game = $DB->get_record_select( 'game', 'id='.$rec->id, null, 'id,name,course ');
$grades = null;
$params = array('itemname' => $game->name, 'idnumber' => 0);
$params['reset'] = true;
grade_update('mod/game', $game->course, 'mod', 'game', $game->id, 0, $grades, $params);
}
}
$DB->delete_records_select('game_bookquiz', "id IN ($allgamessql)");
$DB->delete_records_select('game_bookquiz_chapters', "attemptid IN ($allattemptssql)");
$DB->delete_records_select('game_bookquiz_questions', "gameid IN ($allgamessql)");
$DB->delete_records_select('game_cross', "id IN ($allgamessql)");
$DB->delete_records_select('game_cryptex', "id IN ($allgamessql)");
$DB->delete_records_select('game_export_html', "id IN ($allgamessql)");
$DB->delete_records_select('game_export_javame', "id IN ($allgamessql)");
$DB->delete_records_select('game_grades', "gameid IN ($allgamessql)");
$DB->delete_records_select('game_hangman', "id IN ($allgamessql)");
$DB->delete_records_select('game_hiddenpicture', "id IN ($allgamessql)");
$DB->delete_records_select('game_millionaire', "id IN ($allgamessql)");
$DB->delete_records_select('game_queries', "gameid IN ($allgamessql)");
$DB->delete_records_select('game_repetitions', "gameid IN ($allgamessql)");
$DB->delete_records_select('game_snakes', "id IN ($allgamessql)");
$DB->delete_records_select('game_sudoku', "id IN ($allgamessql)");
if ($i == 2) {
$DB->delete_records_select('game_attempts', "NOT EXISTS (SELECT * FROM {game} g WHERE {game_attempts}.gameid=g.id)");
} else {
$DB->delete_records_select('game_attempts', "gameid IN ($allgamessql)");
}
$status[] = $newstatus;
}
if (empty($data->reset_game_deleted_course)) {
return $status;
}
// Delete data from deleted games.
$a = array( 'bookquiz', 'cross', 'cryptex', 'grades', 'bookquiz_questions', 'export_html', 'export_javame', 'hangman',
'hiddenpicture', 'millionaire', 'snakes', 'sudoku');
foreach ($a as $table) {
$DB->delete_records_select( 'game_'.$table, "NOT EXISTS( SELECT * FROM {game} g WHERE {game_$table}.id=g.id)");
}
$a = array( 'grades', 'queries', 'repetitions');
foreach ($a as $table) {
$DB->delete_records_select( 'game_'.$table, "NOT EXISTS( SELECT * FROM {game} g WHERE {game_$table}.gameid=g.id)");
}
$a = array( 'bookquiz_chapters');
foreach ($a as $table) {
$DB->delete_records_select( 'game_'.$table,
"NOT EXISTS( SELECT * FROM {game_attempts} ga WHERE {game_$table}.attemptid=ga.id)");
}
return $status;
}
/**
* Obtains the automatic completion state for this module based on any conditions
* in game settings.
*
* @param object $course Course
* @param object $cm Course-module
* @param int $userid User ID
* @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
* @return bool True if completed, false if not, $type if conditions not set.
*/
function game_get_completion_state($course, $cm, $userid, $type) {
global $CFG, $DB;
require_once($CFG->dirroot . '/mod/game/locallib.php');
if (($cm->completion == 0) or ($cm->completion == 1)) {
// Completion option is not enabled so just return $type.
return $type;
}
if ($cm->completionview) {
// Just want to view it. Not needed it.
return true;
}
if (! $game = $DB->get_record('game', array('id' => $cm->instance))) {
print_error('invalidcoursemodule');
}
$grade = $DB->get_record_select('game_grades', "userid=$userid AND gameid = $cm->instance", null, 'id,score');
return $grade && $grade->score > 0;
}
/**
* Checks if scale is being used by any instance of Game
*
* This is used to find out if scale used anywhere
*
* @global object
* @param int $scaleid
* @return boolean True if the scale is used by any Game
*/
function game_scale_used_anywhere($scaleid) {
global $DB;
if ($scaleid and $DB->record_exists('game', array('grade' => -$scaleid))) {
return true;
} else {
return false;
}
}
function game_get_context_module_instance( $moduleid) {
if (class_exists( 'context_module')) {
return context_module::instance( $moduleid);
}
return get_context_instance( CONTEXT_MODULE, $moduleid);
}
function game_get_context_course_instance( $courseid) {
if (class_exists( 'context_course')) {
return context_course::instance( $courseid);
}
return get_context_instance( CONTEXT_COURSE, $courseid);
}