public bool PositionHasScent(Coordinates position)
{
return(Scents.ContainsKey(position.X) &&
Scents[position.X].Contains(position.Y));
}
public Surface(Coordinates upperRight)
{
UpperRight = upperRight;
LowerLeft = new Coordinates(0, 0);
Scents = new Dictionary <int, HashSet <int> >();
}