/// <summary>
/// Comparator function for ordering signal lights
/// </summary>
/// <param name="lightA">first light to compare</param>
/// <param name="lightB">second light to compare</param>
/// <returns>integer describing whether first light needs to be sorted before second light (so less than 0, 0, or larger than 0)</returns>
public static int Comparer(SignalLight lightA, SignalLight lightB)
{
return(lightA.Index - lightB.Index);
}
/// <summary>
/// Comparator function for ordering signal lights
/// </summary>
/// <param name="lightA">first light to compare</param>
/// <param name="lightB">second light to compare</param>
/// <returns>integer describing whether first light needs to be sorted before second light (so less than 0, 0, or larger than 0)</returns>
public static int Comparer(SignalLight lightA, SignalLight lightB)
{
return(lightA?.Index - lightB?.Index ?? 0);
}