/**
* @param MovableInterface $fish
* @param Position $current
*
* @return Position
*/
protected function moveFish(MovableInterface $fish, Position $current)
{
$mov = $fish->getMovement();
$next = $current->calculateNewPoint($mov);
$destination = $this->worldMap->get($next);
if ($destination === null) {
// Destinazione vuota: mi sposto
$this->worldMap->put($fish, $next);
$this->worldMap->put(null, $current);
$current = $next;
} else {
// Destinazione occupata: se posso mangio
if ($fish instanceof PredatorInterface and $destination instanceof FoodInterface) {
$fish->eat($destination);
$this->worldMap->put($fish, $next);
$this->worldMap->put(null, $current);
$current = $next;
unset($destination);
}
}
return $current;
}
/**
*
* @param Position $pos
*
* @return boolean True se la posizione indicata è libera
*/
protected function isFreePosition(Position $pos)
{
return $this->matrix->get($pos) === self::OCEAN;
}