/// <summary>
/// Removes all items from the given cell.
/// If the items don't occupy another cell, they are removed as well.
/// </summary>
/// <param name="cell">The cell to remove items from</param>
public void Remove(Point cell)
{
lock (lockObject)
{
Point c = Clamp(cell);
List <T> l;
Grid.TryGetValue(c, out l);
if (l != null)
{
foreach (T i in l)
{
List <Point> pl;
ItemDictionary.TryGetValue(i, out pl);
if (pl != null)
{
pl.Remove(c);
if (pl.Count == 0)
{
ListOfPointQueue.Enqueue(pl);
ItemDictionary.Remove(i);
}
}
}
l.Clear();
ListOfItemQueue.Enqueue(l);
Grid.Remove(cell);
}
}
}
private void AddToItems(T item, Point cell)
{
List <Point> pl;
ItemDictionary.TryGetValue(item, out pl);
if (pl == null)
{
if (ListOfPointQueue.Count > 0)
{
pl = ListOfPointQueue.Dequeue();
}
else
{
pl = new List <Point>();
}
pl.Add(cell);
ItemDictionary.Add(item, pl);
}
else
{
if (!pl.Contains(cell))
{
pl.Add(cell);
}
}
}
public void Dispose()
{
lock (lockObject)
{
ListOfPointQueue.Clear();
ListOfPointQueue = null;
ListOfItemQueue.Clear();
ListOfItemQueue = null;
Grid.Clear();
Grid = null;
ItemDictionary.Clear();
ItemDictionary = null;
}
}
/// <summary>
/// Removes the given item from the grid.
/// </summary>
/// <param name="item">The item to remove</param>
public void Remove(T item)
{
lock (lockObject)
{
List <Point> pl;
ItemDictionary.TryGetValue(item, out pl);
if (pl == null)
{
return;
}
foreach (Point p in pl)
{
RemoveFromGrid(item, p);
}
pl.Clear();
ListOfPointQueue.Enqueue(pl);
ItemDictionary.Remove(item);
}
}
