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<?php
namespace Stu\Component\Spacecraft\Trait;
use RuntimeException;
use Stu\Component\Spacecraft\System\Exception\InvalidSystemException;
use Stu\Component\Spacecraft\System\SpacecraftSystemTypeEnum;
use Stu\Orm\Entity\SpacecraftInterface;
use Stu\Orm\Entity\SpacecraftSystemInterface;
trait SpacecraftTrait
{
private function getThis(): SpacecraftInterface
if (!$this instanceof SpacecraftInterface) {
throw new RuntimeException('trait can only be used on spacecraft entities');
}
return $this;
public function getSpacecraftSystem(SpacecraftSystemTypeEnum $type): SpacecraftSystemInterface
$system = $this->getThis()->getSystems()->get($type->value);
if ($system === null) {
throw new InvalidSystemException(sprintf('system type %d does not exist on ship', $type->value));
return $system;
st-universe /
core
