Пример #1
0
 public function answer(KnowledgeState $state)
 {
     $state_value = $state->value($this->name);
     foreach ($this->answers as $answer) {
         $answer_value = $answer->value;
         // If this is the default option, return it always.
         if ($answer_value === null) {
             return $answer;
         }
         // If the value is a variable, try to resolve it.
         if (KnowledgeState::is_variable($answer_value)) {
             $answer_value = $state->resolve($answer_value);
         }
         if ($state_value == $answer_value) {
             return $answer;
         }
     }
     // We didn't find an appropriate answer :O
     return null;
 }
Пример #2
0
 private function createNewState()
 {
     $state = $this->readState($this->kb_file);
     if (!empty($_GET['goals'])) {
         foreach (explode(',', $_GET['goals']) as $goal) {
             $state->goalStack->push($goal);
         }
     } else {
         foreach ($state->goals as $goal) {
             $state->goalStack->push($goal->name);
             // Also push any answer values that are variables as goals
             // to be solved.
             foreach ($goal->answers as $answer) {
                 if (KnowledgeState::is_variable($answer->value)) {
                     $state->goalStack->push(substr($answer->value, 1));
                 }
             }
         }
     }
     return $state;
 }