public MarbleGame(int numPlayers)
{
_playerScores = new Dictionary <int, long>();
for (var player = 0; player < numPlayers; player++)
{
_playerScores.Add(player, 0);
}
_currentPlayerIndex = -1;
CurrentMarbleValue = 0;
_currentMarble = new Marble
{
Value = CurrentMarbleValue
};
_currentMarble.Next = _currentMarble;
_currentMarble.Previous = _currentMarble;
}
public void PlaceNextMarble()
{
CurrentMarbleValue++;
var nextMarble = new Marble
{
Value = CurrentMarbleValue
};
_currentPlayerIndex++;
if (_currentPlayerIndex == _playerScores.Count)
{
_currentPlayerIndex = 0;
}
if (nextMarble.Value % 23 == 0)
{
var marbleToRemove = _currentMarble.Previous.Previous.Previous.Previous.Previous.Previous.Previous;
_playerScores[_currentPlayerIndex] += nextMarble.Value;
_playerScores[_currentPlayerIndex] += marbleToRemove.Value;
marbleToRemove.Previous.Next = marbleToRemove.Next;
marbleToRemove.Next.Previous = marbleToRemove.Previous;
_currentMarble = marbleToRemove.Next;
}
else
{
var leftMarble = _currentMarble.Next;
var rightMarble = _currentMarble.Next.Next;
nextMarble.Previous = leftMarble;
nextMarble.Next = rightMarble;
leftMarble.Next = nextMarble;
rightMarble.Previous = nextMarble;
_currentMarble = nextMarble;
}
}