private void CellOnStackCountChange(IBagCell cell)
{
if (cell.Item is IStack stack)
{
if (stack.Count == 0)
{
_cells.Remove(cell);
cell.OnStackCountChange -= CellOnStackCountChange;
OnCellRemoved?.Invoke(this, cell);
}
}
}
public IReadOnlyCollection <IThing> Pull(IStack stack)
{
if (stack == null)
{
throw new ArgumentNullException(nameof(stack));
}
try
{
if (stack.Count == 0)
{
return(new IThing[0]);
}
var stackCells = _cells.Where(c => c.Item is IStack s && s.Prototype == stack.Prototype).ToArray();
if (stackCells.Any())
{
if (stackCells.Sum(c => ((IStack)c.Item).Count) < stack.Count)
{
throw new Exception("Недостаточно предметов " + stack.Prototype.Name);
}
// TODO: тут надо бы с учётом того что предметы могут быть размазаны по разным стаков
stackCells.First().Remove(stack);
return(new IThing[] { new Stack(stack.Prototype, stack.Count) });
}
var cells = _cells.Where(c => c.Item.Prototype == stack.Prototype).Take(stack.Count).ToArray();
if (cells.Length < stack.Count)
{
throw new Exception("Недостаточно предметов " + stack.Prototype.Name);
}
var result = new Collection <IThing>();
foreach (var cell in cells)
{
result.Add(cell.Item);
cell.OnStackCountChange -= CellOnStackCountChange;
_cells.Remove(cell);
OnCellRemoved?.Invoke(this, cell);
}
return(result);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
public IThing Pull(IThing thing)
{
if (thing == null)
{
throw new ArgumentNullException(nameof(thing));
}
var cell = _cells.First(c => c.Item == thing);
cell.OnStackCountChange -= CellOnStackCountChange;
_cells.Remove(cell);
OnCellRemoved?.Invoke(this, cell);
return(thing);
}