private void MakeCompositeSinglePileMove(int first)
{
if (Diagnostics)
{
Utils.WriteLine("MCSPM");
}
bool aborted = false;
int offloadPile = -1;
MoveStack.Clear();
for (int next = first; next != -1; next = SupplementaryList[next].Next)
{
int numberOfSpaces = Tableau.NumberOfSpaces;
Move move = Tableau.Normalize(SupplementaryList[next]);
if (move.Type == MoveType.Unload)
{
offloadPile = move.To;
UnloadToSpaces(move.From, move.FromRow, -1);
}
else if (move.Type == MoveType.Reload)
{
if (Diagnostics)
{
Utils.WriteLine("RL:");
}
while (MoveStack.Count != 0)
{
Move subMove = MoveStack.Pop();
int to = subMove.To != -1 ? subMove.To : move.To;
MakeSimpleMove(subMove.From, subMove.FromRow, to);
}
offloadPile = -1;
}
else if (move.Flags.UndoHolding())
{
TryMakeMoveUsingSpaces(move);
}
else
{
if (!TryMakeMoveUsingSpaces(move))
{
// Things got messed up due to a discard. There might
// be another pile with the same target.
bool foundAlternative = false;
Pile fromPile = Tableau[move.From];
if (move.From >= 0 && move.From < fromPile.Count)
{
Card fromCard = fromPile[move.FromRow];
for (int to = 0; to < NumberOfPiles; to++)
{
if (to == move.From)
{
continue;
}
Pile toPile = Tableau[to];
if (toPile.Count == 0)
{
continue;
}
if (!fromCard.IsSourceFor(toPile[toPile.Count - 1]))
{
continue;
}
if (TryMakeMoveUsingSpaces(new Move(move.From, move.FromRow, to)))
{
foundAlternative = true;
}
break;
}
}
if (!foundAlternative)
{
// This move is hopelessly messed up.
aborted = true;
break;
}
}
}
}
if (!aborted && MoveStack.Count != 0)
{
throw new Exception("missing reload move");
}
}