private IPeg GetPegByNumber(PegNumber pegNumber)
{
return(pegNumber switch
{
PegNumber.One => _peg1,
PegNumber.Two => _peg2,
PegNumber.Three => _peg3,
_ => throw new InvalidOperationException("Invalid peg number")
});
public IEnumerable <TowerGameMoveModel> Solve(int gameMaxDiscsPerPeg, PegNumber start, PegNumber destination, PegNumber spare)
{
if (gameMaxDiscsPerPeg > 0)
{
foreach (var solution in Solve(gameMaxDiscsPerPeg - 1, start, spare, destination))
{
yield return(solution);
}
yield return(new TowerGameMoveModel {
From = start, To = destination
});
foreach (var solution in Solve(gameMaxDiscsPerPeg - 1, spare, destination, start))
{
yield return(solution);
}
}
}
public void PerformMove(PegNumber from, PegNumber to)
{
if (from == to)
{
return;
}
var fromPeg = GetPegByNumber(from);
var toPeg = GetPegByNumber(to);
var disc = fromPeg.TakeTopDisc();
try
{
toPeg.PlaceDisc(disc);
}
catch
{
fromPeg.PlaceDisc(disc);
throw;
}
}