function scorm_randomize_children_process($scoid, $userid)
{
$sco = scorm_get_sco($scoid);
if (!scorm_is_leaf($sco)) {
if (!scorm_seq_is('suspended', $scoid, $userid) && !scorm_seq_is('active', $scoid, $userid)) {
$r = get_record('scorm_scoes_track', 'scoid', $scoid, 'userid', $userid, 'element', 'randomizationtiming');
switch ($r->value) {
case 'never':
break;
case 'oneachnewattempt':
case 'once':
if (!scorm_seq_is('activityprogressstatus', $scoid, $userid)) {
if (scorm_seq_is('randomizechildren', $scoid, $userid)) {
$childlist = array();
$res = scorm_get_available_children($sco);
$i = sizeof($res) - 1;
$children = $res->value;
while ($i >= 0) {
$pos = array_rand($children);
array_push($childlist, $children[$pos]);
array_splice($children, $pos, 1);
$i--;
}
$clist = serialize($childlist);
scorm_seq_set('availablechildren', $scoid, $userid, false);
scorm_seq_set('availablechildren', $scoid, $userid, $clist);
}
}
break;
}
}
}
}
function scorm_seq_flow_activity_traversal($activity, $userid, $direction, $childrenflag, $prevdirection, $seq, $userid)
{
$parent = scorm_get_parent($activity);
if (!isset($parent->flow) || $parent->flow == false) {
$seq->deliverable = false;
$seq->exception = 'SB.2.2-1';
$seq->nextactivity = $activity;
return $seq;
}
$rulecheck = scorm_seq_rules_check($activity, 'skip');
if ($rulecheck != null) {
$skip = scorm_evaluate_condition($rulecheck, $activity, $userid);
if ($skip) {
$seq = scorm_seq_flow_tree_traversal($activity, $direction, false, $prevdirection, $seq, $userid, $skip);
$seq = scorm_seq_flow_activity_traversal($seq->nextactivity, $userid, $direction, $childrenflag, $prevdirection, $seq, $userid);
} else {
if (!empty($seq->identifiedactivity)) {
$seq->nextactivity = $activity;
}
}
return $seq;
}
$ch = scorm_check_activity($activity, $userid);
if ($ch) {
$seq->deliverable = false;
$seq->exception = 'SB.2.2-2';
$seq->nextactivity = $activity;
return $seq;
}
if (!scorm_is_leaf($activity)) {
$seq = scorm_seq_flow_tree_traversal($activity, $direction, true, null, $seq, $userid);
if ($seq->identifiedactivity == null) {
$seq->deliverable = false;
$seq->nextactivity = $activity;
return $seq;
} else {
if ($direction == 'backward' && $seq->traversaldir == 'forward') {
$seq = scorm_seq_flow_activity_traversal($seq->identifiedactivity, $userid, 'forward', $childrenflag, 'backward', $seq, $userid);
} else {
$seq = scorm_seq_flow_activity_traversal($seq->identifiedactivity, $userid, $direction, $childrenflag, null, $seq, $userid);
}
return $seq;
}
}
$seq->deliverable = true;
$seq->nextactivity = $activity;
$seq->exception = null;
return $seq;
}
function scorm_seq_end_attempt($sco, $userid)
{
if (scorm_is_leaf($sco)) {
if (!isset($sco->tracked) || $sco->tracked == 1) {
if (!scorm_seq_is('suspended', $sco->id, $userid)) {
if (!isset($sco->completionsetbycontent) || $sco->completionsetbycontent == 0) {
if (!scorm_seq_is('attemptprogressstatus', $sco->id, $userid, $attempt)) {
scorm_seq_set('attemptprogressstatus', $sco->id, $userid, $attempt);
scorm_seq_set('attemptcompletionstatus', $sco->id, $userid, $attempt);
}
}
if (!isset($sco->objectivesetbycontent) || $sco->objectivesetbycontent == 0) {
if ($sco->objectives) {
foreach ($objectives as $objective) {
if ($objective->primary) {
if (!scorm_seq_objective_progress_status($sco, $userid, $objective)) {
scorm_seq_set('objectiveprogressstatus', $sco->id, $userid, $attempt);
scorm_seq_set('objectivesatisfiedstatus', $sco->id, $userid, $attempt);
}
}
}
}
}
}
}
} else {
if ($children = scorm_get_children($sco)) {
$suspended = false;
foreach ($children as $child) {
if (scorm_seq_is('suspended', $child, $userid)) {
$suspended = true;
break;
}
}
if ($suspended) {
scorm_seq_set('suspended', $sco, $userid);
} else {
scorm_seq_set('suspended', $sco, $userid, 0, false);
}
}
}
scorm_seq_set('active', $sco, $userid, 0, false);
scorm_seq_overall_rollup($sco, $userid);
}
