/// <summary>
/// Уничтожить элемент.
/// </summary>
/// <param name="cellModel">Ячейка в которых находится элемент</param>
private void DestroyElement(CellModel cellModel)
{
if (cellModel.Element == null)
{
return;
}
cellModel.Element.Destroy();
cellModel.SetElement(null);
}
/// <summary>
/// Поменять местами элементы.
/// </summary>
/// <param name="cell">Ячейка с элементом для замены</param>
/// <param name="direction">Направление замены</param>
public void SwapElements(CellModel cell, MovementDirection direction)
{
if (WaitFinishMovementElements > 0)
{
return;
}
ElementModel firstElement;
ElementModel secondElement;
switch (direction)
{
case MovementDirection.Up:
if (!_exchange.CheckSwap(MovementDirection.Up))
{
return;
}
if (cell.Y + 1 >= _field.Height)
{
return;
}
firstElement = cell.Element;
secondElement = _field.GetCell(cell.X, cell.Y + 1).Element;
cell.SetElement(secondElement);
_field.GetCell(cell.X, cell.Y + 1).SetElement(firstElement);
break;
case MovementDirection.Right:
if (!_exchange.CheckSwap(MovementDirection.Right))
{
return;
}
if (cell.X + 1 >= _field.Width)
{
return;
}
firstElement = cell.Element;
secondElement = _field.GetCell(cell.X + 1, cell.Y).Element;
cell.SetElement(secondElement);
_field.GetCell(cell.X + 1, cell.Y).SetElement(firstElement);
break;
case MovementDirection.Down:
if (!_exchange.CheckSwap(MovementDirection.Down))
{
return;
}
if (cell.Y - 1 < 0)
{
return;
}
firstElement = cell.Element;
secondElement = _field.GetCell(cell.X, cell.Y - 1).Element;
cell.SetElement(secondElement);
_field.GetCell(cell.X, cell.Y - 1).SetElement(firstElement);
break;
case MovementDirection.Left:
if (!_exchange.CheckSwap(MovementDirection.Left))
{
return;
}
if (cell.X - 1 < 0)
{
return;
}
firstElement = cell.Element;
secondElement = _field.GetCell(cell.X - 1, cell.Y).Element;
cell.SetElement(secondElement);
_field.GetCell(cell.X - 1, cell.Y).SetElement(firstElement);
break;
default:
throw new ArgumentOutOfRangeException("direction", direction, null);
}
if (firstElement != null && secondElement != null)
{
WaitFinishMovementElements = 2;
firstElement.Swap(direction);
secondElement.Swap(direction.InvertDirection());
}
}
