/// <summary>
/// Adds an item at the end of the collection
/// </summary>
/// <param name="item">Defines the item which is meant to be added</param>
/// <exception cref="System.Exception">Thrown if this movement would be impossible</exception>
public void Add(LayerMove item)
{
CubeFlag flag = item.Layer;
foreach (LayerMove m in _moves)
{
flag |= m.Layer;
}
if (CubeFlagService.IsPossibleMove(flag))
{
_moves.Add(item);
}
else
{
throw new Exception("Impossible movement");
}
}
