public function process_submit(question_attempt_pending_step $pendingstep)
{
// Must find out prevbest before parent function get in it's fraction.
$prevbest = $pendingstep->get_fraction();
if (is_null($prevbest)) {
$prevbest = 0;
}
$status = parent::process_submit($pendingstep);
$response = $pendingstep->get_qt_data();
if ($this->question->is_gradable_response($response) && $status == question_attempt::KEEP) {
// State was graded.
$prevtotal = $this->qa->get_last_behaviour_var('_totalpenalties', 0);
// The fraction = rawfraction - totalpenalties (already collected).
$pendingstep->set_fraction(max($prevbest, $this->adjusted_fraction($pendingstep->get_behaviour_var('_rawfraction'), $prevtotal)));
$pendingstep->set_behaviour_var('_totalpenalties', $prevtotal + $this->question->penalty);
// For submit penalty is added after fraction is calculated.
$pendingstep->set_behaviour_var('_penalty', $this->question->penalty);
}
return $status;
}
public function process_finish(question_attempt_pending_step $pendingstep)
{
if ($this->qa->get_state()->is_finished()) {
return question_attempt::DISCARD;
}
$laststep = $this->qa->get_last_step();
$response = $laststep->get_qt_data();
if (!$this->question->is_gradable_response($response)) {
$pendingstep->set_state(question_state::$gaveup);
return question_attempt::KEEP;
}
$prevtries = $this->qa->get_last_behaviour_var('_try', 0);
$prevbest = $pendingstep->get_fraction();
if (is_null($prevbest)) {
$prevbest = 0;
}
if ($laststep->has_behaviour_var('_try')) {
// Last answer was graded, we want to regrade it. Otherwise the answer
// has changed, and we are grading a new try.
$prevtries -= 1;
}
list($fraction, $state) = $this->question->grade_response($response);
$pendingstep->set_fraction(max($prevbest, $this->adjusted_fraction($fraction, $prevtries)));
$pendingstep->set_state($state);
$pendingstep->set_behaviour_var('_try', $prevtries + 1);
$pendingstep->set_behaviour_var('_rawfraction', $fraction);
$pendingstep->set_new_response_summary($this->question->summarise_response($response));
return question_attempt::KEEP;
}