private ArrayList EnumSingleMovesCore(Point fromLocation, bool optionalJumping, ArrayList jumpMoves)
{
// Create resizable list of jumpable moves and their respective jumps
ArrayList moves = new ArrayList();
// Check for single moves, if not jumping already took place
if (path.Count > 0)
{
return(moves);
}
bool canSingleMove = true;
if (!optionalJumping)
{
// Determine whether or not a single jump can take place
canSingleMove = (jumpMoves.Count == 0) || (game.OptionalJumping);
if (canSingleMove)
{
// Further testing for single moves; test all other pieces on the board
foreach (CheckersPiece testPiece in game.EnumPlayerPieces(game.Turn))
{
ArrayList dummy;
if (EnumJumpMovesCore(testPiece, testPiece.Location, out dummy).Count == 0)
{
continue;
}
canSingleMove = false;
break;
}
}
}
// Check whether or not a single move can take place
if (!canSingleMove)
{
return(moves);
}
// Append single-move moves in the enumeration (if able to)
if (piece.Location == fromLocation)
{
if ((piece.Direction == CheckersDirection.Up) || (piece.Rank == CheckersRank.King))
{
if (InBounds(fromLocation.X - 1, fromLocation.Y - 1) && (board[fromLocation.X - 1, fromLocation.Y - 1] == null))
{
moves.Add(new Point(fromLocation.X - 1, fromLocation.Y - 1));
}
if (InBounds(fromLocation.X + 1, fromLocation.Y - 1) && (board[fromLocation.X + 1, fromLocation.Y - 1] == null))
{
moves.Add(new Point(fromLocation.X + 1, fromLocation.Y - 1));
}
}
if ((piece.Direction == CheckersDirection.Down) || (piece.Rank == CheckersRank.King))
{
if (InBounds(fromLocation.X - 1, fromLocation.Y + 1) && (board[fromLocation.X - 1, fromLocation.Y + 1] == null))
{
moves.Add(new Point(fromLocation.X - 1, fromLocation.Y + 1));
}
if (InBounds(fromLocation.X + 1, fromLocation.Y + 1) && (board[fromLocation.X + 1, fromLocation.Y + 1] == null))
{
moves.Add(new Point(fromLocation.X + 1, fromLocation.Y + 1));
}
}
}
return(moves);
}
