Method IsEnabled

src/engine.cpp:146–149

* Checks whether the engine is a valid (non-articulated part of an) engine. * @return true if enabled */

 * @return true if enabled
 */
bool Engine::IsEnabled() const
{
	return this->info.string_id != STR_NEWGRF_INVALID_ENGINE && this->info.climates.Test(_settings_game.game_creation.landscape);
}

/**
 * Retrieve the GRF ID of the NewGRF the engine is tied to.