/**
* @param array $neighboursCount
* @param string $cellSpecies
* @return State
*/
private function getLiveCellNewState(array $neighboursCount, $cellSpecies)
{
$neighborSpeciesCount = isset($neighboursCount[$cellSpecies]) ? $neighboursCount[$cellSpecies] : 0;
// If there are two or three organisms of the same type living in the elements
// surrounding an organism of the same, type then it may survive.
if ($neighborSpeciesCount == 2 || $neighborSpeciesCount == 3) {
return State::letLive();
}
// – If there are less than two organisms of one type surrounding one of the same type
// then it will die due to isolation.
// – If there are four or more organisms of one type surrounding one of the same type
// then it will die due to overcrowding.
return State::terminate();
}
/**
* @return array
*/
public function getNeighboursCountForLiveCellProvider()
{
$data = [];
// x, y, expected state
$data[] = [0, 0, State::letLive()];
$data[] = [0, 1, State::letLive()];
$data[] = [1, 0, State::terminate()];
$data[] = [1, 1, State::terminate()];
$data[] = [1, 2, State::letLive()];
$data[] = [1, 3, State::letLive()];
$data[] = [2, 0, State::letLive()];
$data[] = [2, 2, State::letLive()];
$data[] = [2, 4, State::letLive()];
$data[] = [3, 3, State::letLive()];
$data[] = [3, 4, State::letLive()];
return $data;
}