Method IsAvailable

src/newgrf_object.cpp:97–101

* Check whether the object is available at this time. * @return true if it is available. */

 * @return true if it is available.
 */
bool ObjectSpec::IsAvailable() const
{
	return this->WasEverAvailable() &&
			(TimerGameCalendar::date < this->end_of_life_date || this->end_of_life_date < this->introduction_date + 365);
}

/**
 * Gets the index of this spec.