Function EngineReliabilitySorter

src/build_vehicle_gui.cpp:176–185

* Determines order of engines by reliability * @param a first engine to compare * @param b second engine to compare * @return for descending order: returns true if a < b. Vice versa for ascending order */

 * @return for descending order: returns true if a < b. Vice versa for ascending order
 */
static bool EngineReliabilitySorter(const GUIEngineListItem &a, const GUIEngineListItem &b)
{
	const int va = Engine::Get(a.engine_id)->reliability;
	const int vb = Engine::Get(b.engine_id)->reliability;
	const int r = va - vb;

	/* Use EngineID to sort instead since we want consistent sorting */
	if (r == 0) return EngineNumberSorter(a, b);
	return _engine_sort_direction ? r > 0 : r < 0;
}

/**
 * Determines order of engines by purchase cost