Method DrawType

src/rail_gui.cpp:1848–1851

	}

	void DrawType(int x, int y, int cls_id, int id) const override
	{
		DrawWaypointSprite(x, y, this->GetClassIndex(cls_id), id, _cur_railtype);
	}

	void FillUsedItems(std::set<PickerItem> &items) override
	{