//For the given Cell, loops though each possible block for each possible MainBlock owner, adding the possible block to the new CellInstance and MainBlockInstace.
//Note all the MainBlockInstances have already been created before this method is called.
private void CopyData(ICellInstance originalInstance, ICellInstance newInstance)
{
foreach (IMainBlock mainBlock in originalInstance.PossibleMainBlocks)
{
LinkedList <int> possibleOwners = new LinkedList <int>();
foreach (int possibleBlock in originalInstance.PossibleOwners[mainBlock])
{
possibleOwners.AddLast(possibleBlock);
mainBlock.PossibleBlocks.Add(possibleBlock);
}
newInstance.PossibleOwners.Add(mainBlock, possibleOwners);
newInstance.PossibleMainBlocks.AddLast(mainBlock);
}
}
/// <summary>
/// Loops though each MainBlock and Cell adding a new instacne to any without a known solution.
/// Copies relevant data from the original Instance on the stack.
/// </summary>
public void CloneInstancesAndData()
{
foreach (IMainBlock mainBlock in _solutionTracker.Grid.MainBlocks)
{
//No need to duplicate instance if it has a solution already.
//Note: data will be added to the new instance when creating new Cell instances.
if (mainBlock.Instances.Peek().SolutionIndex == -1)
{
mainBlock.Instances.Push(new MainBlockInstance());
}
}
foreach (ICell cell in _solutionTracker.Grid.Cells)
{
if (cell.Instances.Peek().OwnedBy == null)
{
ICellInstance originalInstance = cell.Instances.Peek();
ICellInstance newInstance = new CellInstance();
cell.Instances.Push(newInstance);
CopyData(originalInstance, newInstance);
}
}
_solutionTracker.Grid.MaxStackHeight++;
}