chess/Board.cpp at master · Darshan-AS/chess · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
#include "stdafx.h"
#include "Board.h"


Board::Board() {

	board[0][0] = new Rook(Piece::COLOR_BLACK);
	board[0][1] = new Knight(Piece::COLOR_BLACK);
	board[0][2] = new Bishop(Piece::COLOR_BLACK);
	board[0][3] = new Queen(Piece::COLOR_BLACK);
	board[0][4] = new King(Piece::COLOR_BLACK);
	board[0][5] = new Bishop(Piece::COLOR_BLACK);
	board[0][6] = new Knight(Piece::COLOR_BLACK);
	board[0][7] = new Rook(Piece::COLOR_BLACK);

	board[1][0] = new Pawn(Piece::COLOR_BLACK);
	board[1][1] = new Pawn(Piece::COLOR_BLACK);
	board[1][2] = new Pawn(Piece::COLOR_BLACK);
	board[1][3] = new Pawn(Piece::COLOR_BLACK);
	board[1][4] = new Pawn(Piece::COLOR_BLACK);
	board[1][5] = new Pawn(Piece::COLOR_BLACK);
	board[1][6] = new Pawn(Piece::COLOR_BLACK);
	board[1][7] = new Pawn(Piece::COLOR_BLACK);

	board[6][0] = new Pawn(Piece::COLOR_WHITE);
	board[6][1] = new Pawn(Piece::COLOR_WHITE);
	board[6][2] = new Pawn(Piece::COLOR_WHITE);
	board[6][3] = new Pawn(Piece::COLOR_WHITE);
	board[6][4] = new Pawn(Piece::COLOR_WHITE);
	board[6][5] = new Pawn(Piece::COLOR_WHITE);
	board[6][6] = new Pawn(Piece::COLOR_WHITE);
	board[6][7] = new Pawn(Piece::COLOR_WHITE);

	board[7][0] = new Rook(Piece::COLOR_WHITE);
	board[7][1] = new Knight(Piece::COLOR_WHITE);
	board[7][2] = new Bishop(Piece::COLOR_WHITE);
	board[7][3] = new Queen(Piece::COLOR_WHITE);
	board[7][4] = new King(Piece::COLOR_WHITE);
	board[7][5] = new Bishop(Piece::COLOR_WHITE);
	board[7][6] = new Knight(Piece::COLOR_WHITE);
	board[7][7] = new Rook(Piece::COLOR_WHITE);
}

Piece * Board::getPieceAt(Position position) {
	return board[position.getRow()][position.getColumn()];
}

void Board::setPieceAt(Position position, Piece * piece) {
	board[position.getRow()][position.getColumn()] = piece;
}

bool Board::containsPieceAt(Position position) {
	if (getPieceAt(position) == nullptr)
		return false;

	return true;
}

void Board::movePiece(Position currentPosition, Position destinationPosition) {
	Piece * piece = getPieceAt(currentPosition);

	board[destinationPosition.getRow()][destinationPosition.getColumn()] = piece;
	board[currentPosition.getRow()][currentPosition.getColumn()] = 0;

	if (dynamic_cast<King*>(piece)) {

		if (piece->getColor() == Piece::COLOR_WHITE)
			whiteKingPosition = destinationPosition;
		else if (piece->getColor() == Piece::COLOR_BLACK)
			blackKingPosition = destinationPosition;
	}
}

bool Board::isInRange(Position position) {

	if (position.getRow() >= MAX_ROWS ||
		position.getColumn() >= MAX_COLUMNS ||
		position.getRow() < 0 ||
		position.getColumn() < 0)
		return false;

	return true;
}

bool Board::isInCheck(int playerColor) {
	Position selfKingPosition;

	if (playerColor == Piece::COLOR_BLACK)
		selfKingPosition = blackKingPosition;
	else if (playerColor == Piece::COLOR_WHITE)
		selfKingPosition = whiteKingPosition;

	for (int row = 0; row < MAX_ROWS; row++)
		for (int column = 0; column < MAX_COLUMNS; column++) {

			Position position = Position(row, column);
			Piece * piece = getPieceAt(position);

			if (piece == nullptr || piece->getColor() == playerColor)
				continue;

			vector<Position> validMoves = piece->getValidMoves(*this, position);
			for (int i = 0; i < validMoves.size(); i++)
				if (validMoves[i].equals(selfKingPosition))
					return true;
		}

	return false;
}

bool Board::isCheckMate(int playerColor) {

	for (int row = 0; row < MAX_ROWS; row++)
		for (int column = 0; column < MAX_COLUMNS; column++) {

			Position sourcePosition = Position(row, column);
			Piece * sourcePiece = getPieceAt(sourcePosition);

			if (sourcePiece == nullptr || sourcePiece->getColor() != playerColor)
				continue;

			vector<Position> validMoves = sourcePiece->getValidMoves(*this, sourcePosition);
			if (validMoves.size() == 0)
				continue;

			for (int i = 0; i < validMoves.size(); i++) {

				Piece * destinationPiece = getPieceAt(validMoves[i]);
				movePiece(sourcePosition, validMoves[i]);

				if (!isInCheck(playerColor)) {
					movePiece(validMoves[i], sourcePosition);
					setPieceAt(validMoves[i], destinationPiece);
					return false;
				}

				movePiece(validMoves[i], sourcePosition);
				setPieceAt(validMoves[i], destinationPiece);
			}
		}

	return true;
}

int Board::getCurrentPlayer() {
	return currentPlayer;
}

void Board::setCurrentPlayer(int color) {
	currentPlayer = color;
}