public void Trace(Position position, StoneType putStoneType, ActionForSandwichedStoneDelegate action)
{
if (position == null || action == null)
{
throw new ArgumentException();
}
foreach (var dir in Position.Direction.AllDirections)
{
var neighberCell = board.GetNeighberCell(position, dir);
TraceSub(neighberCell, putStoneType, dir, action);
}
}
private bool TraceSub(Cell tracingCell, StoneType putStoneType, Position.Direction dir, ActionForSandwichedStoneDelegate action)
{
if (tracingCell == null)
{
return(false);
}
if (tracingCell.Stone == null)
{
return(false);
}
if (putStoneType.Equals(tracingCell.Stone))
{
return(true);
}
var neighberCell = board.GetNeighberCell(tracingCell.Position, dir);
bool isSandwiched = TraceSub(neighberCell, putStoneType, dir, action);
if (isSandwiched)
{
action(tracingCell);
}
return(isSandwiched);
}
