public function execute()
{
if (false === ($chall = WC_Challenge::getByID(Common::getGetString('cid')))) {
return $this->module->error('err_chall');
}
$user = GWF_User::getStaticOrGuest();
$token = Common::getGetString('token');
$length = Common::clamp(Common::getGetInt('length'), 1);
require_once GWF_CORE_PATH . 'module/WeChall/WC_ChallSolved.php';
require_once GWF_CORE_PATH . 'module/WeChall/WC_MathChall.php';
if (!WC_ChallSolved::hasSolved($user->getID(), $chall->getID())) {
if (!WC_MathChall::checkToken($chall, $length, $token)) {
return $this->module->error('err_token');
}
}
return $this->templateSolutions($chall, $user, $length, $token);
}
function math_pyramid_check(WC_Challenge $chall, $formula, $maxlen, $precision = 4)
{
error_reporting(E_ERROR);
GWF_Debug::setDieOnError(false);
GWF_Debug::setMailOnError(false);
$len = strlen($formula);
$tests = array('0' => 0, '1' => 0.2357, '3.14' => 7.2971, '10' => 235.7023, '100' => 235702.2604);
$eval = new EvalMath();
$fa = "f(a) = {$formula}";
if (false === $eval->evaluate($fa)) {
echo GWF_HTML::error('Math Pyramid', $chall->lang('err_formula', array(htmlspecialchars($fa))));
return false;
}
GWF_Debug::setDieOnError(true);
GWF_Debug::setMailOnError(true);
$back = GWF_HTML::message('Math Pyramid', $chall->lang('msg_formula', array(htmlspecialchars($fa))), false);
$correct = 0;
foreach ($tests as $a => $result) {
$result2 = $eval->evaluate("f({$a})");
$result = sprintf('%.0' . $precision . 'f', $result);
$result2 = sprintf('%.0' . $precision . 'f', $result2);
if ($result === $result2) {
$back .= GWF_HTML::message('Math Pyramid', $chall->lang('msg_correct', array($a, $result2, $result)), false);
$correct++;
} else {
$back .= GWF_HTML::error('Math Pyramid', $chall->lang('err_wrong', array($a, $result2, $result)), false);
}
}
require_once GWF_CORE_PATH . 'module/WeChall/WC_MathChall.php';
if ($chall->getID() > 0 && $correct === count($tests)) {
if (false === WC_MathChall::insertSolution($chall->getID(), GWF_Session::getUserID(), $formula)) {
$back .= GWF_HTML::err('ERR_DATABASE', array(__FILE__, __LINE__));
} else {
$back .= GWF_HTML::message('Math Pyramid', WC_HTML::lang('msg_wmc_sol_inserted', array($len, WC_MathChall::getLimitedHREF($chall, $len))), false);
}
}
# Check Len
if ($len > $maxlen) {
$back .= GWF_HTML::error('Math Pyramid', $chall->lang('err_too_long', array($len, $maxlen)), false);
}
echo $back;
if ($correct === count($tests) && $len <= $maxlen) {
if ($len < $maxlen) {
echo GWF_HTML::message('Math Pyramid', $chall->lang('msg_new_record', array($len, $maxlen)), false);
GWF_Settings::setSetting('WC_MATH_PYRAMID', $len);
}
$chall->onChallengeSolved(GWF_Session::getUserID());
}
}