private List<Move> getPieceMoves(Square square)
{
List<Move> list = new List<Move>();
Piece piece = getPiece(square), tmp;
Square stmp;
if (piece == null)
return list;
switch (piece.PieceType) {
case Piece.Type.b:
#region BishopMoves
//Do up, down, left, right
stmp = new Square(square.x, square.y + 1);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x, square.y - 1);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
list.AddRange(this.getDiagonalMoves(square));
#endregion
break;
case Piece.Type.k:
#region KingMoves
stmp = new Square(square.x, square.y + 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x, square.y - 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
//Diags
stmp = new Square(square.x + 1, square.y + 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y - 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y + 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y - 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
#endregion
break;
case Piece.Type.n:
#region KnightMoves
stmp = new Square(square.x + 1, square.y + 2);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y - 2);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y + 2);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y - 2);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 2, square.y + 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 2, square.y - 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 2, square.y + 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 2, square.y - 1);
tmp = getPiece(stmp);
if ((tmp == null || tmp.PieceColor != piece.PieceColor) && isValidSquare(stmp))
list.Add(new Move(stmp, square));
#endregion
break;
case Piece.Type.p:
#region PawnMoves
if (piece.PieceColor == Piece.Color.White) {
stmp = new Square(square.x - 1, square.y);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y - 1);
tmp = getPiece(stmp);
if (tmp != null && tmp.PieceColor != piece.PieceColor)
list.Add(new Move(stmp, square));
stmp = new Square(square.x - 1, square.y + 1);
tmp = getPiece(stmp);
if (tmp != null && tmp.PieceColor != piece.PieceColor)
list.Add(new Move(stmp, square));
}
else {
stmp = new Square(square.x + 1, square.y);
tmp = getPiece(stmp);
if (tmp == null && isValidSquare(stmp))
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y - 1);
tmp = getPiece(stmp);
if (tmp != null && tmp.PieceColor != piece.PieceColor)
list.Add(new Move(stmp, square));
stmp = new Square(square.x + 1, square.y + 1);
tmp = getPiece(stmp);
if (tmp != null && tmp.PieceColor != piece.PieceColor)
list.Add(new Move(stmp, square));
}
#endregion
break;
case Piece.Type.q:
list.AddRange(this.getDiagonalMoves(square));
list.AddRange(this.getOrthMoves(square));
break;
case Piece.Type.r:
list.AddRange(this.getOrthMoves(square));
break;
}
return list;
}
private bool isValidSquare(Square square)
{
return (square.x >= 0 && square.x < HEIGHT && square.y >= 0 && square.y < WIDTH);
}
private List<Move> getOrthMoves(Square square)
{
List<Move> list = new List<Move>();
Square stmp;
Piece tmp, piece = getPiece(square);
if (piece == null)
return list;
Boolean done = false;
stmp = square;
while (!done) {
stmp = new Square(stmp.x + 1, stmp.y);
if (isValidSquare(stmp)) {
tmp = getPiece(stmp);
if (tmp == null) {
list.Add(new Move(stmp, square));
continue;
}
if (tmp.PieceColor != piece.PieceColor) {
list.Add(new Move(stmp, square));
done = true;
}
else {
done = true;
}
}
else {
done = true;
}
}
done = false;
stmp = square;
while (!done) {
stmp = new Square(stmp.x - 1, stmp.y);
if (isValidSquare(stmp)) {
tmp = getPiece(stmp);
if (tmp == null) {
list.Add(new Move(stmp, square));
continue;
}
if (tmp.PieceColor != piece.PieceColor) {
list.Add(new Move(stmp, square));
done = true;
}
else {
done = true;
}
}
else {
done = true;
}
}
done = false;
stmp = square;
while (!done) {
stmp = new Square(stmp.x, stmp.y + 1);
if (isValidSquare(stmp)) {
tmp = getPiece(stmp);
if (tmp == null) {
list.Add(new Move(stmp, square));
continue;
}
if (tmp.PieceColor != piece.PieceColor) {
list.Add(new Move(stmp, square));
done = true;
}
else {
done = true;
}
}
else {
done = true;
}
}
done = false;
stmp = square;
while (!done) {
stmp = new Square(stmp.x, stmp.y - 1);
if (isValidSquare(stmp)) {
tmp = getPiece(stmp);
if (tmp == null) {
list.Add(new Move(stmp, square));
continue;
}
if (tmp.PieceColor != piece.PieceColor) {
list.Add(new Move(stmp, square));
done = true;
}
else {
done = true;
}
}
else {
done = true;
}
}
return list;
}
public Boolean setPiece(Square square, Piece piece)
{
if (isValidSquare(square)) {
this.board[square.x, square.y] = piece;
return true;
}
return false;
}
public Piece getPiece(Square square)
{
if (isValidSquare(square))
return this.board[square.x, square.y];
return null;
}
public void fromString(String m)
{
string[] parts = m.Split("-".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
this.From = new Square(parts[0]);
this.To = new Square(parts[1]);
}
public Move(Square to, Square from)
{
this.To = to;
this.From = from;
}