private function countFilledFields(GameState $state) : int
{
$count = 0;
for ($row = 0; $row < 3; $row++) {
for ($col = 0; $col < 3; $col++) {
if ($state->getField($row, $col) != Player::NONE()) {
$count++;
}
}
}
return $count;
}
/**
* @return Decision[]
*/
public function getDecisions() : array
{
if ($this->win($this->turn) || $this->lose($this->turn)) {
return [];
}
$decisions = [];
foreach ($this->board as $row => $rowValues) {
foreach ($rowValues as $col => $fieldValue) {
if ($fieldValue->equals(Player::NONE())) {
$decisions[] = new Decision($row, $col);
}
}
}
return $decisions;
}
