fuel/app/classes/model/knowledge.php

```php linenums="1"

array( 'name' => 'Reconnaissance', 'description' => '', 'skills' => function($level) { return array( 1 => $level * 2 ); }, 'requires' => function($level) { return array( 'level' => $level * 1, 'knows' => array( 2 => $level ), 'money' => $level * 3 ); }, ), 2 => array( 'name' => 'Cryptology', 'description' => '', 'skills' => function($level) { return array( 3 => $level * 2, 6 => $level * 1 ); }, 'requires' => function($level) { return array( 'level' => $level * 1, 'knows' => array( // 2 => $level ) ); }, ), 3 => array( 'name' => 'Stealth', 'description' => '', 'skills' => function($level) { return array( 5 => $level * 2 ); }, 'requires' => function($level) { return array( 'level' => $level * 1, 'knows' => array( // 2 => $level ) ); }, ) ); } public static function process($knowledge_string) { if ($knowledge_string) { $user_knows = json_decode($knowledge_string, true); } else $user_knows = array(); $knowledge = Knowledge::knowledge(); foreach($knowledge as $k_id => $k) { if (!isset($user_knows[$k_id])) $user_knows[$k_id] = array('level' => 0); } foreach($knowledge as $k_id => $k) { $user_knows[$k_id]['skills'] = $k['skills']($user_knows[$k_id]['level'] + 1); $user_knows[$k_id]['requires'] = $k['requires']($user_knows[$k_id]['level'] + 1); $fulfilled = $user_knows[$k_id]['requires']['level'] <= \Hacker::get('level'); if (isset($user_knows[$k_id]['requires']['money'])) $fulfilled = $user_knows[$k_id]['requires']['money'] <= \Hacker::get('money'); foreach ($user_knows[$k_id]['requires']['knows'] as $r_k_id => &$r_k) { $r_k = array('level' => $r_k, 'fulfilled' => $user_knows[$r_k_id]['level'] >= $r_k); $fulfilled = !$r_k['fulfilled'] ? false : $fulfilled; } $user_knows[$k_id]['requires']['fulfilled'] = $fulfilled; } return $user_knows; } public static function save($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); } } ``` ?>