/**
* Returns a label identifying this round in the game.
* The label is unique to steps in this game.
*
* Currently, the format for the label is 'step_X[_repetition_Y]',
* where X is the order of this step.
*
* @throws InvalidArgumentException if this step is repeated, but no repetition was supplied; or if this is an invalid repetition
* @return string unique label for this step and repetition
*/
public function label()
{
$step_identifier = $this->step->__toString();
//TODO: a better idea might be to use the step code rather than its order
if ($this->step->isRepeated()) {
return $step_identifier . '_repetition_' . $this->repetition;
} else {
return $step_identifier;
}
}
