fuel/app/classes/model/features.php

```php linenums="1"

array( 'name' => 'Feature 1', 'description' => '', 'requires' => function($level) { return array( 'level' => $level * 1, 'features' => array( 2 => $level ), 'knows' => array( 2 => $level ), 'money' => $level * 3 ); }, ), 2 => array( 'name' => 'Feature 2', 'description' => '', 'requires' => function($level) { return array( 'level' => $level * 1, 'features' => array( // 2 => $level ), 'knows' => array( 2 => $level ), ); }, ), 3 => array( 'name' => 'Feature 3', 'description' => '', 'requires' => function($level) { return array( 'level' => $level * 1, 'features' => array( // 2 => $level ), 'knows' => array( 2 => $level ), ); }, ) ); } public static function process($features_string) { if ($features_string) { $node_features = json_decode($features_string, true); } else $node_features = array(); $features = static::features(); foreach($features as $k_id => $k) { if (!isset($node_features[$k_id])) $node_features[$k_id] = array('level' => 0); } $knowledge = Knowledge::knowledge(); $user_knowledge = Knowledge::process(\Hacker::get('knowledge')); foreach($features as $k_id => $k) { $nf = &$node_features[$k_id]; $nf['requires'] = $k['requires']($nf['level'] + 1); $fulfilled = $nf['requires']['level'] <= \Hacker::get('level'); if (isset($nf['requires']['money'])) $fulfilled = $nf['requires']['money'] <= \Hacker::get('money'); foreach ($nf['requires']['features'] as $r_f_id => &$r_f) { $r_f = array('level' => $r_f, 'fulfilled' => $node_features[$r_f_id]['level'] >= $r_f); $fulfilled = !$r_f['fulfilled'] ? false : $fulfilled; } foreach ($nf['requires']['knows'] as $r_k_id => &$r_k) { $r_k = array('level' => $r_k, 'fulfilled' => $user_knowledge[$r_k_id]['level'] >= $r_k); $fulfilled = !$r_k['fulfilled'] ? false : $fulfilled; } $nf['requires']['fulfilled'] = $fulfilled; } return $node_features; } public static function save($user_id, $knows) { $knowsData = array(); foreach($knows as $k_id => $k) $knowsData[$k_id] = array('level' => $k['level']); $knowsData = json_encode($knowsData); \Hacker::update(array('knowledge' => $knowsData), $user_id); } } ``` ?>