public void Add(TaggedVector obj)
{
if(previousEntityPosition.ContainsKey(obj.Identifier))
throw new Exception("The specified object is already being managed with this hashmap");
Point entityHash = Hash(obj);
if(!cells.ContainsKey(entityHash))
cells.Add(entityHash, new List<TaggedVector>());
cells[entityHash].Add(obj);
previousEntityPosition.Add(obj.Identifier, entityHash);
}
private Point Hash(TaggedVector point)
{
Point p = new Point(((int)point.Position.X) / CellWidth, ((int)point.Position.Y) / CellHeight);
return p;
}