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Copy pathbitboard.cpp
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2238 lines (1840 loc) · 72.5 KB
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#include "bitboard.hpp"
BitBoard::BitBoard() {
currentState.moveNumber = 0;
currentState.ruleNumber = 0;
preInit();
setFen(startpos_fen);
}
BitBoard::~BitBoard() {}
void BitBoard::setFen(std::string fen) {
clear();
std::vector<std::string> fenArray = splitter(fen, ' ');
std::vector<std::string> notation = splitter(fenArray[0], '/');
std::reverse(notation.begin(), notation.end());
for(unsigned int y = 0; y < 8; ++y) {
int x = 0;
for(unsigned int i = 0; i < notation[y].size(); ++i) {
if(notation[y][i] == 'K') {
currentState.figures[KING] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'Q') {
currentState.figures[QUEEN] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'R') {
currentState.figures[ROOK] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'B') {
currentState.figures[BISHOP] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'N') {
currentState.figures[KNIGHT] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'P') {
currentState.figures[PAWN] |= vec2_cells[y][x];
currentState.piece_bit_mask[whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'k') {
currentState.figures[KING] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'q') {
currentState.figures[QUEEN] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'r') {
currentState.figures[ROOK] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'b') {
currentState.figures[BISHOP] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'n') {
currentState.figures[KNIGHT] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] == 'p') {
currentState.figures[PAWN] |= vec2_cells[y][x];
currentState.piece_bit_mask[!whiteSide] |= vec2_cells[y][x];
++x;
} else if(notation[y][i] >= '0' && notation[y][i] <= '9') {
x += (notation[y][i] - '0');
}
}
}
if(fenArray[1] == "w") {
currentState.color = true;
} else {
currentState.color = false;
}
for(unsigned int i = 0; i < fenArray[2].size() && fenArray[2] != "-"; ++i) {
if(fenArray[2][i] == 'K') {
currentState.castlingMap |= (vec2_cells[0][4] | vec2_cells[0][7]);
} else if(fenArray[2][i] == 'Q') {
currentState.castlingMap |= (vec2_cells[0][4] | vec2_cells[0][0]);
} else if(fenArray[2][i] == 'k') {
currentState.castlingMap |= (vec2_cells[7][4] | vec2_cells[7][7]);
} else if(fenArray[2][i] == 'q') {
currentState.castlingMap |= (vec2_cells[7][4] | vec2_cells[7][0]);
}
}
if(fenArray[3] != "-") {
uint8_t x = (fenArray[3][0] - 'a');
uint8_t y = (fenArray[3][1] - '1');
currentState.passant_enable = true;
currentState.passant_x = x;
currentState.passant_y = y;
}
currentState.ruleNumber = std::stoi(fenArray[4]);
currentState.moveNumber = std::stoi(fenArray[5]);
generateHash();
++third_repeat[getColorHash() & hash_cutter];
}
std::string BitBoard::getFen() {
std::string res;
for(int y = 7; y >= 0; --y) {
int space = 0;
for(int x = 0; x < 8; ++x) {
if(currentState.piece_bit_mask[whiteSide] & vec2_cells[y][x]) {
if(space != 0) {
res.push_back('0' + space);
space = 0;
}
if(currentState.figures[KING] & vec2_cells[y][x]) {
res.push_back('K');
} else if(currentState.figures[QUEEN] & vec2_cells[y][x]) {
res.push_back('Q');
} else if(currentState.figures[ROOK] & vec2_cells[y][x]) {
res.push_back('R');
} else if(currentState.figures[BISHOP] & vec2_cells[y][x]) {
res.push_back('B');
} else if(currentState.figures[KNIGHT] & vec2_cells[y][x]) {
res.push_back('N');
} else if(currentState.figures[PAWN] & vec2_cells[y][x]) {
res.push_back('P');
}
} else if(currentState.piece_bit_mask[!whiteSide] & vec2_cells[y][x]) {
if(space != 0) {
res.push_back('0' + space);
space = 0;
}
if(currentState.figures[KING] & vec2_cells[y][x]) {
res.push_back('k');
} else if(currentState.figures[QUEEN] & vec2_cells[y][x]) {
res.push_back('q');
} else if(currentState.figures[ROOK] & vec2_cells[y][x]) {
res.push_back('r');
} else if(currentState.figures[BISHOP] & vec2_cells[y][x]) {
res.push_back('b');
} else if(currentState.figures[KNIGHT] & vec2_cells[y][x]) {
res.push_back('n');
} else if(currentState.figures[PAWN] & vec2_cells[y][x]) {
res.push_back('p');
}
} else {
++space;
}
}
if(space > 0) {
res.push_back('0' + space);
}
if(y > 0) {
res.push_back('/');
}
}
res.push_back(' ');
if(currentState.color) {
res.push_back('w');
} else {
res.push_back('b');
}
res.push_back(' ');
if(!wsc() && !wlc() && !bsc() && !blc()) {
res.push_back('-');
} else {
if(wsc()) {
res.push_back('K');
}
if(wlc()) {
res.push_back('Q');
}
if(bsc()) {
res.push_back('k');
}
if(blc()) {
res.push_back('q');
}
}
res.push_back(' ');
if(currentState.passant_enable) {
res.push_back(currentState.passant_x + 'a');
res.push_back(currentState.passant_y + '1');
} else {
res.push_back('-');
}
res.push_back(' ');
res += std::to_string(currentState.ruleNumber);
res.push_back(' ');
res += std::to_string(currentState.moveNumber);
return res;
}
void BitBoard::clear() {
currentState.hash = 0;
currentState.recapture_position = 0;
currentState.whitePassantMade = false;
currentState.blackPassantMade = false;
third_repeat = std::vector<int> (std::pow(2, hash_width), 0);
currentState.hash_enable = true;
for(unsigned int i = 0; i < 7; ++i) {
currentState.figures[i] = 0;
}
currentState.piece_bit_mask[whiteSide] = 0;
currentState.piece_bit_mask[!whiteSide] = 0;
currentState.moveNumber = 0;
currentState.ruleNumber = 0;
currentState.passant_enable = false;
currentState.color = true;
currentState.castlingMap = 0;
history_iterator = 0;
gameHash.clear();
}
std::vector<std::string> BitBoard::splitter(std::string str, char sym) {
std::vector<std::string> result;
std::string tmp;
for(unsigned int i = 0; i < str.size(); ++i) {
if(str[i] == sym) {
result.push_back(tmp);
tmp.clear();
continue;
}
tmp.push_back(str[i]);
}
result.push_back(tmp);
return result;
}
uint8_t BitBoard::popcount64(uint64_t value) {
return __builtin_popcountll(value);
}
uint8_t BitBoard::firstOne(uint64_t mask) {
return !mask ? 64 : __builtin_ctzll(mask);
}
uint8_t BitBoard::lastOne(uint64_t mask) {
return !mask ? 64 : (63 - __builtin_clzll(mask));
}
void BitBoard::preInit() {
history = std::vector<GoBack> (10000);
third_repeat = std::vector<int> (pow(2, hash_width), 0);
history_iterator = 0;
currentState.margin = 0;
magicConstantsSet();
zobristGenerator();
currentState.castlingMap = 0;
for(int i = 0; i < 64; ++i) {
for(int j = 0; j < 64; ++j) {
kingSecurityArray[i][j] = king_security[std::max(std::abs(i / 8 - j / 8), std::abs(i % 8 - j % 8))];
}
}
for(int i = 0; i < 64; ++i) {
int y_pos = i / 8;
int x_pos = i % 8;
for(int y = 0; y < 8; ++y) {
for(int x = 0; x < 8; ++x) {
metric[i][y][x] = std::max(std::abs(y_pos - y), std::abs(x_pos - x));
}
}
}
blackCells = ~whiteCells;
uint64_t mul = 1;
for(unsigned int y = 0; y < BOARD_SIZE; ++y) {
for(unsigned int x = 0; x < BOARD_SIZE; ++x) {
vec2_cells[y][x] = mul;
mul *= 2;
}
}
for(int i = 0; i < 32; ++i) {
for(int j = 0; j < BOARD_SIZE; ++j) {
for(int k = 0; k < BOARD_SIZE; ++k) {
bitboard[i][j][k] = 0;
}
}
}
for(int i = 0; i < 65; ++i) {
plus1[i] = 0;
plus7[i] = 0;
plus8[i] = 0;
plus9[i] = 0;
minus1[i] = 0;
minus7[i] = 0;
minus8[i] = 0;
minus9[i] = 0;
}
uint64_t it = 1;
for(int i = 0; i < 64; ++i) {
vec1_cells[i] = it;
vec2_cells[i / 8][i % 8] = it;
it <<= 1;
}
isolated_pawn_map = std::vector<uint8_t>(256, 0);
uint8_t three_lines = 128 | 64 | 32;
std::vector<uint8_t> pawn_mask(8);
pawn_mask[0] = 128 | 64;
for(unsigned int i = 1; i < pawn_mask.size(); ++i, three_lines >>= 1) {
pawn_mask[i] = three_lines;
}
for(int i = 0; i < 256; ++i) {
for(unsigned int j = 0; j < 8; ++j) {
if(i & (128 >> j)) {
isolated_pawn_map[i] += (popcount64(i & pawn_mask[j]) <= 1);
}
}
}
for(int y = 0; y < 8; ++y) {
for(int x = 0; x < 8; ++x) {
for(int k = 0; k < 8; ++k) {
if(k != x) {
bitboard[ROOK | WHITE][y][x] += vec2_cells[y][k];
bitboard[ROOK | BLACK][y][x] += vec2_cells[y][k];
bitboard[QUEEN | WHITE][y][x] += vec2_cells[y][k];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[y][k];
}
}
for(int k = 0; k < 8; ++k) {
if(k != y) {
bitboard[ROOK | WHITE][y][x] += vec2_cells[k][x];
bitboard[ROOK | BLACK][y][x] += vec2_cells[k][x];
bitboard[QUEEN | WHITE][y][x] += vec2_cells[k][x];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[k][x];
}
}
for(int i = y + 1, j = x + 1; i < 8 && j < 8; ++i, ++j) {
bitboard[QUEEN | WHITE][y][x] += vec2_cells[i][j];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[i][j];
bitboard[BISHOP | WHITE][y][x] += vec2_cells[i][j];
bitboard[BISHOP | BLACK][y][x] += vec2_cells[i][j];
}
for(int i = y + 1, j = x - 1; i < 8 && j >= 0; ++i, --j) {
bitboard[QUEEN | WHITE][y][x] += vec2_cells[i][j];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[i][j];
bitboard[BISHOP | WHITE][y][x] += vec2_cells[i][j];
bitboard[BISHOP | BLACK][y][x] += vec2_cells[i][j];
}
for(int i = y - 1, j = x + 1; i >= 0 && j < 8; --i, ++j) {
bitboard[QUEEN | WHITE][y][x] += vec2_cells[i][j];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[i][j];
bitboard[BISHOP | WHITE][y][x] += vec2_cells[i][j];
bitboard[BISHOP | BLACK][y][x] += vec2_cells[i][j];
}
for(int i = y - 1, j = x - 1; i >= 0 && j >= 0; --i, --j) {
bitboard[QUEEN | WHITE][y][x] += vec2_cells[i][j];
bitboard[QUEEN | BLACK][y][x] += vec2_cells[i][j];
bitboard[BISHOP | WHITE][y][x] += vec2_cells[i][j];
bitboard[BISHOP | BLACK][y][x] += vec2_cells[i][j];
}
if(y < BOARD_SIZE - 2 && x < BOARD_SIZE - 1) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y+2][x+1];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y+2][x+1];
}
if(y < BOARD_SIZE - 2 && x > 0) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y+2][x-1];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y+2][x-1];
}
if(y > 1 && x < BOARD_SIZE - 1) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y-2][x+1];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y-2][x+1];
}
if(y > 1 && x > 0) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y-2][x-1];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y-2][x-1];
}
if(y < BOARD_SIZE - 1 && x < BOARD_SIZE - 2) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y+1][x+2];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y+1][x+2];
}
if(y < BOARD_SIZE - 1 && x > 1) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y+1][x-2];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y+1][x-2];
}
if(y > 0 && x < BOARD_SIZE - 2) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y-1][x+2];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y-1][x+2];
}
if(y > 0 && x > 1) {
bitboard[KNIGHT | WHITE][y][x] |= vec2_cells[y-1][x-2];
bitboard[KNIGHT | BLACK][y][x] |= vec2_cells[y-1][x-2];
}
if(y > 0 && x > 0) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y-1][x-1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y-1][x-1];
}
if(y > 0) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y-1][x];
bitboard[KING | BLACK][y][x] |= vec2_cells[y-1][x];
}
if(y > 0 && x < BOARD_SIZE - 1) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y-1][x+1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y-1][x+1];
}
if(x > 0) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y][x-1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y][x-1];
}
if(x < BOARD_SIZE - 1) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y][x+1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y][x+1];
}
if(y < BOARD_SIZE - 1 && x > 0) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y+1][x-1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y+1][x-1];
}
if(y < BOARD_SIZE - 1) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y+1][x];
bitboard[KING | BLACK][y][x] |= vec2_cells[y+1][x];
}
if(y < BOARD_SIZE - 1 && x < BOARD_SIZE - 1) {
bitboard[KING | WHITE][y][x] |= vec2_cells[y+1][x+1];
bitboard[KING | BLACK][y][x] |= vec2_cells[y+1][x+1];
}
if(y > 0 && y < 7) {
bitboard[PAWN | WHITE][y][x] |= vec2_cells[y+1][x];
bitboard[PAWN | BLACK][y][x] |= vec2_cells[y-1][x];
if(y == 1) {
bitboard[PAWN | WHITE][y][x] |= vec2_cells[y+2][x];
}
if(y == 6) {
bitboard[PAWN | BLACK][y][x] |= vec2_cells[y-2][x];
}
}
}
}
for(int i = 0; i < 64; ++i) {
for(int y = i / 8 + 1, x = i % 8 + 1; y < 8 && x < 8; ++y, ++x) {
plus9[i] |= vec2_cells[y][x];
}
for(int y = i / 8 + 1, x = i % 8 - 1; y < 8 && x >= 0; ++y, --x) {
plus7[i] |= vec2_cells[y][x];
}
for(int y = i / 8 - 1, x = i % 8 - 1; y >= 0 && x >= 0; --y, --x) {
minus9[i] |= vec2_cells[y][x];
}
for(int y = i / 8 - 1, x = i % 8 + 1; y >= 0 && x < 8; --y, ++x) {
minus7[i] |= vec2_cells[y][x];
}
for(int y = i / 8 + 1, x = i % 8; y < 8; ++y) {
plus8[i] |= vec2_cells[y][x];
}
for(int y = i / 8, x = i % 8 + 1; x < 8; ++x) {
plus1[i] |= vec2_cells[y][x];
}
for(int y = i / 8 - 1, x = i % 8; y >= 0; --y) {
minus8[i] |= vec2_cells[y][x];
}
for(int y = i / 8, x = i % 8 - 1; x >= 0; --x) {
minus1[i] |= vec2_cells[y][x];
}
}
uint64_t res = 255;
for(unsigned int i = 0; i < 8; ++i) {
horizontal[i] = res;
res <<= 8;
}
res = 0;
for(int i = 0; i < 8; ++i) {
res |= vec2_cells[i][0];
}
for(unsigned int i = 0; i < 8; ++i) {
vertical[i] = res;
res <<= 1;
}
for(unsigned int i = 0; i < 64; ++i) {
capturePawnMap[WHITE][i] = 0;
capturePawnMap[BLACK][i] = 0;
capturePawnMap[WHITE][i] |= ((vec1_cells[i]) << 9) & ~vertical[0];
capturePawnMap[WHITE][i] |= ((vec1_cells[i]) << 7) & ~vertical[7];
capturePawnMap[BLACK][i] |= ((vec1_cells[i]) >> 9) & ~vertical[7];
capturePawnMap[BLACK][i] |= ((vec1_cells[i]) >> 7) & ~vertical[0];
}
for(unsigned int i = 0; i < 64; ++i) {
whitePawnCheckCells[i] = 0;
blackPawnCheckCells[i] = 0;
}
for(unsigned int i = 0; i < 64; ++i) {
uint64_t pawnMap = capturePawnMap[WHITE][i];
while(pawnMap) {
int pos = firstOne(pawnMap);
pawnMap &= ~vec1_cells[pos];
whitePawnCheckCells[pos] |= vec1_cells[i];
}
pawnMap = capturePawnMap[BLACK][i];
while(pawnMap) {
int pos = firstOne(pawnMap);
pawnMap &= ~vec1_cells[pos];
blackPawnCheckCells[pos] |= vec1_cells[i];
}
}
magicInit();
whiteCells = 0;
for(int i = 0; i < 64; ++i) {
int y_pos = i / 8;
int x_pos = i % 8;
if((y_pos + x_pos) % 2 != 0) {
whiteCells |= vec1_cells[i];
}
}
blackCells = ~whiteCells;
}
void BitBoard::magicInit() {
for(uint8_t y = 0; y < 8; ++y) {
for(uint8_t x = 0; x < 8; ++x) {
rookMagicMask[y][x] = 0;
if(plus1[y * 8 + x]) {
rookMagicMask[y][x] |= plus1[y * 8 + x];
rookMagicMask[y][x] &= ~vertical[7];
}
if(minus1[y * 8 + x]) {
rookMagicMask[y][x] |= minus1[y * 8 + x];
rookMagicMask[y][x] &= ~vertical[0];
}
if(plus8[y * 8 + x]) {
rookMagicMask[y][x] |= plus8[y * 8 + x];
rookMagicMask[y][x] &= ~horizontal[7];
}
if(minus8[y * 8 + x]) {
rookMagicMask[y][x] |= minus8[y * 8 + x];
rookMagicMask[y][x] &= ~horizontal[0];
}
rookMagicMask[y][x] &= ~vec2_cells[y][x];
}
}
for(uint8_t y = 0; y < 8; ++y) {
for(uint8_t x = 0; x < 8; ++x) {
bishopMagicMask[y][x] = 0;
if(plus9[y * 8 + x]) {
bishopMagicMask[y][x] |= plus9[y * 8 + x];
bishopMagicMask[y][x] &= ~vertical[7];
bishopMagicMask[y][x] &= ~horizontal[7];
}
if(minus9[y * 8 + x]) {
bishopMagicMask[y][x] |= minus9[y * 8 + x];
bishopMagicMask[y][x] &= ~vertical[0];
bishopMagicMask[y][x] &= ~horizontal[0];
}
if(plus7[y * 8 + x]) {
bishopMagicMask[y][x] |= plus7[y * 8 + x];
bishopMagicMask[y][x] &= ~vertical[0];
bishopMagicMask[y][x] &= ~horizontal[7];
}
if(minus7[y * 8 + x]) {
bishopMagicMask[y][x] |= minus7[y * 8 + x];
bishopMagicMask[y][x] &= ~vertical[7];
bishopMagicMask[y][x] &= ~horizontal[0];
}
bishopMagicMask[y][x] &= ~vec2_cells[y][x];
}
}
for(uint8_t y = 0; y < 8; ++y) {
for(uint8_t x = 0; x < 8; ++x) {
std::vector<uint64_t> rook_combination = std::vector<uint64_t>((int)std::pow(2, popcount64(rookMagicMask[y][x])));
for(uint64_t k = 0; k < std::pow(2, popcount64(rookMagicMask[y][x])); ++k) {
uint64_t tmp_bitboard = rookMagicMask[y][x];
uint64_t bit_combination = 0;
for(int m = 0; m < popcount64(rookMagicMask[y][x]); ++m) {
uint8_t pos = firstOne(tmp_bitboard);
tmp_bitboard &= ~vec1_cells[pos];
if(vec1_cells[m] & k) {
bit_combination |= vec1_cells[pos];
}
}
rook_combination[k] = bit_combination;
}
std::vector<uint64_t> bishop_combination = std::vector<uint64_t>((int)std::pow(2, popcount64(bishopMagicMask[y][x])));
for(uint64_t k = 0; k < std::pow(2, popcount64(bishopMagicMask[y][x])); ++k) {
uint64_t tmp_bitboard = bishopMagicMask[y][x];
uint64_t bit_combination = 0;
for(int m = 0; m < popcount64(bishopMagicMask[y][x]); ++m) {
uint8_t pos = firstOne(tmp_bitboard);
tmp_bitboard &= ~vec1_cells[pos];
if(vec1_cells[m] & k) {
bit_combination |= vec1_cells[pos];
}
}
bishop_combination[k] = bit_combination;
}
std::vector<uint64_t> rook_result_array(std::pow(2, popcount64(rookMagicMask[y][x])));
for(int s = 0; s < std::pow(2, popcount64(rookMagicMask[y][x])); ++s) {
uint64_t rook_result = 0;
rook_result |= (minus1[y * 8 + x] & ~minus1[lastOne(minus1[y * 8 + x] & (horizontal[y] & rook_combination[s]))]);
rook_result |= (minus8[y * 8 + x] & ~minus8[lastOne(minus8[y * 8 + x] & (vertical[x] & rook_combination[s]))]);
rook_result |= ( plus1[y * 8 + x] & ~plus1[firstOne(plus1[y * 8 + x] & (horizontal[y] & rook_combination[s]))]);
rook_result |= ( plus8[y * 8 + x] & ~plus8[firstOne(plus8[y * 8 + x] & (vertical[x] & rook_combination[s]))]);
uint64_t ind = ((rook_combination[s] * ROOK_MAGIC[y][x]) >> (64 - popcount64(rookMagicMask[y][x])));
rook_result_array[ind] = rook_result;
}
rookMagic[y][x] = Magic(rook_result_array, ROOK_MAGIC[y][x], 64 - popcount64(rookMagicMask[y][x]));
std::vector<uint64_t> bishop_result_array(std::pow(2, popcount64(bishopMagicMask[y][x])));
for(int s = 0; s < std::pow(2, popcount64(bishopMagicMask[y][x])); ++s) {
uint64_t bishop_result = 0;
bishop_result |= (minus7[y * 8 + x] & ~minus7[lastOne(minus7[y * 8 + x] & ((plus7[y * 8 + x] | minus7[y * 8 + x] | vec2_cells[y][x]) & bishop_combination[s]))]);
bishop_result |= (minus9[y * 8 + x] & ~minus9[lastOne(minus9[y * 8 + x] & ((plus9[y * 8 + x] | minus9[y * 8 + x] | vec2_cells[y][x]) & bishop_combination[s]))]);
bishop_result |= ( plus7[y * 8 + x] & ~plus7[firstOne(plus7[y * 8 + x] & ((plus7[y * 8 + x] | minus7[y * 8 + x] | vec2_cells[y][x]) & bishop_combination[s]))]);
bishop_result |= ( plus9[y * 8 + x] & ~plus9[firstOne(plus9[y * 8 + x] & ((plus9[y * 8 + x] | minus9[y * 8 + x] | vec2_cells[y][x]) & bishop_combination[s]))]);
uint64_t ind = ((bishop_combination[s] * BISHOP_MAGIC[y][x]) >> (64 - popcount64(bishopMagicMask[y][x])));
bishop_result_array[ind] = bishop_result;
}
bishopMagic[y][x] = Magic(bishop_result_array, BISHOP_MAGIC[y][x], 64 - popcount64(bishopMagicMask[y][x]));
}
}
}
int BitBoard::getFiguresCount() {
return popcount64(currentState.piece_bit_mask[whiteSide] | currentState.piece_bit_mask[!whiteSide]);
}
void BitBoard::bitBoardMoveGenerator(MoveArray& moveArray) {
bitBoardAttackMoveGenerator(moveArray);
uint64_t possibleMoves, mask, emask, occu;
uint8_t color = colorExtended[currentState.color];
mask = currentState.piece_bit_mask[currentState.color];
emask = currentState.piece_bit_mask[!currentState.color];
occu = (mask | emask);
//Ладьи
uint64_t rook = currentState.figures[ROOK] & mask;
while(rook != 0) {
uint8_t pos = firstOne(rook);
possibleMoves = (*rookMagic + pos)->getPossibleMoves(*(*rookMagicMask + pos) & occu & ~vec1_cells[pos]) & ~occu;
rook &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(ROOK | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
//Слоны
uint64_t bishop = currentState.figures[BISHOP] & mask;
while(bishop != 0) {
uint8_t pos = firstOne(bishop);
possibleMoves = (*bishopMagic + pos)->getPossibleMoves(*(*bishopMagicMask + pos) & occu & ~vec1_cells[pos]) & ~occu;
bishop &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(BISHOP | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
//Ферзи
uint64_t queen = currentState.figures[QUEEN] & mask;
while(queen != 0) {
uint8_t pos = firstOne(queen);
possibleMoves = ~occu & ((*rookMagic + pos)->getPossibleMoves(*(*rookMagicMask + pos) & occu & ~vec1_cells[pos]) |
((*bishopMagic + pos)->getPossibleMoves(*(*bishopMagicMask + pos) & occu & ~vec1_cells[pos])));
queen &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(QUEEN | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
//Кони
uint64_t knight = currentState.figures[KNIGHT] & mask;
while(knight != 0) {
uint8_t pos = firstOne(knight);
possibleMoves = *(*bitboard[KNIGHT | color] + pos) & ~occu;
knight &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(KNIGHT | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
//Короли
uint64_t king = currentState.figures[KING] & mask;
while(king != 0) {
uint8_t pos = firstOne(king);
possibleMoves = *(*bitboard[KING | color] + pos) & ~occu;
king &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(KING | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
if(currentState.color) {
if(wsc()) {
if((occu & (vec2_cells[0][5] | vec2_cells[0][6])) == 0) {
if(!inCheck(WHITE, 0, 4) && !inCheck(WHITE, 0, 5) && !inCheck(WHITE, 0, 6)) {
moveArray.addMove(BitMove(KING | color, 0, 4, 0, 6));
}
}
}
if(wlc()) {
if((occu & (vec2_cells[0][3] | vec2_cells[0][2] | vec2_cells[0][1])) == 0) {
if(!inCheck(WHITE, 0, 4) && !inCheck(WHITE, 0, 3) && !inCheck(WHITE, 0, 2)) {
moveArray.addMove(BitMove(KING | color, 0, 4, 0, 2));
}
}
}
} else {
if(bsc()) {
if((occu & (vec2_cells[7][5] | vec2_cells[7][6])) == 0) {
if(!inCheck(BLACK, 7, 4) && !inCheck(BLACK, 7, 5) && !inCheck(BLACK, 7, 6)) {
moveArray.addMove(BitMove(KING | color, 7, 4, 7, 6));
}
}
}
if(blc()) {
if((occu & (vec2_cells[7][3] | vec2_cells[7][2] | vec2_cells[7][1])) == 0) {
if(!inCheck(BLACK, 7, 4) && !inCheck(BLACK, 7, 3) && !inCheck(BLACK, 7, 2)) {
moveArray.addMove(BitMove(KING | color, 7, 4, 7, 2));
}
}
}
}
//Пешки
if(currentState.color) {
uint64_t pawn = currentState.figures[PAWN] & mask & ~horizontal[6];
while(pawn != 0) {
uint8_t pos = firstOne(pawn);
possibleMoves = *(*bitboard[PAWN | WHITE] + pos) &
(plus8[pos] & ~plus8[firstOne(plus8[pos] & occu)]) &
~vec1_cells[firstOne(plus8[pos] & occu)] & ~occu;
pawn &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(PAWN | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
pawn = currentState.figures[PAWN] & mask & (horizontal[6]);
while(pawn != 0) {
uint8_t pos = firstOne(pawn);
possibleMoves = *(*bitboard[PAWN | WHITE] + pos) &
( plus8[pos] & ~plus8[firstOne(plus8[pos] & occu)]) &
~vec1_cells[firstOne(plus8[pos] & occu)] & ~occu;
pawn &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
BitMove replaced(PAWN | color, pos / 8, pos % 8, to / 8, to % 8);
replaced.setReplaced(KNIGHT | color);
moveArray.addMove(replaced);
replaced.setReplaced(BISHOP | color);
moveArray.addMove(replaced);
replaced.setReplaced(ROOK | color);
moveArray.addMove(replaced);
replaced.setReplaced(QUEEN | color);
moveArray.addMove(replaced);
possibleMoves &= ~vec1_cells[to];
}
}
} else {
uint64_t pawn = currentState.figures[PAWN] & mask & ~horizontal[1];
while(pawn != 0) {
uint8_t pos = firstOne(pawn);
possibleMoves = *(*bitboard[PAWN | BLACK] + pos) &
(minus8[pos] & ~minus8[lastOne(minus8[pos] & occu)]) &
~vec1_cells[lastOne(minus8[pos] & occu)] & ~occu;
pawn &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
moveArray.addMove(BitMove(PAWN | color, pos / 8, pos % 8, to / 8, to % 8));
possibleMoves &= ~vec1_cells[to];
}
}
pawn = currentState.figures[PAWN] & mask & (horizontal[1]);
while(pawn != 0) {
uint8_t pos = firstOne(pawn);
possibleMoves = *(*bitboard[PAWN | BLACK] + pos);
possibleMoves &= ( minus8[pos] & ~minus8[firstOne(minus8[pos] & occu)]);
possibleMoves &= ~vec1_cells[firstOne(minus8[pos] & occu)];
possibleMoves &= ~(mask | emask);
pawn &= ~vec1_cells[pos];
while(possibleMoves != 0) {
uint64_t to = firstOne(possibleMoves);
BitMove replaced(PAWN | color, pos / 8, pos % 8, to / 8, to % 8);
replaced.setReplaced(KNIGHT | color);
moveArray.addMove(replaced);
replaced.setReplaced(BISHOP | color);
moveArray.addMove(replaced);
replaced.setReplaced(ROOK | color);
moveArray.addMove(replaced);
replaced.setReplaced(QUEEN | color);
moveArray.addMove(replaced);
possibleMoves &= ~vec1_cells[to];
}
}
}
}
void BitBoard::bitBoardAttackMoveGenerator(MoveArray& moveArray) {
moveArray.clear();
uint64_t possibleMoves, mask, emask, occu;
uint8_t color = colorExtended[currentState.color];
mask = currentState.piece_bit_mask[currentState.color];
emask = currentState.piece_bit_mask[!currentState.color];
occu = (mask | emask);
//Пешки
if(currentState.color) {
uint64_t pawn = currentState.figures[PAWN] & mask & ~horizontal[6];
uint64_t rightPawnAttack = (pawn << 9) & ~vertical[0] & emask & ~currentState.figures[KING];
moveArray.num_attacks += popcount64(rightPawnAttack);
while(rightPawnAttack != 0) {
uint64_t to = firstOne(rightPawnAttack);
moveArray.addMove(BitMove(getFigure(to), PAWN | color, to / 8 - 1, to % 8 - 1, to / 8, to % 8));
rightPawnAttack &= ~vec1_cells[to];
}
uint64_t leftPawnAttack = (pawn << 7) & ~vertical[7] & emask & ~currentState.figures[KING];
moveArray.num_attacks += popcount64(leftPawnAttack);
while(leftPawnAttack != 0) {
uint64_t to = firstOne(leftPawnAttack);
moveArray.addMove(BitMove(getFigure(to), PAWN | color, to / 8 - 1, to % 8 + 1, to / 8, to % 8));
leftPawnAttack &= ~vec1_cells[to];
}
pawn = currentState.figures[PAWN] & mask & horizontal[6];
rightPawnAttack = (pawn << 9) & ~vertical[0] & emask & ~currentState.figures[KING];
moveArray.num_attacks += popcount64(rightPawnAttack);
while(rightPawnAttack != 0) {
uint64_t to = firstOne(rightPawnAttack);
BitMove replaced = BitMove(getFigure(to), PAWN | color, to / 8 - 1, to % 8 - 1, to / 8, to % 8);
replaced.setReplaced(KNIGHT | color);
moveArray.addMove(replaced);
replaced.setReplaced(BISHOP | color);
moveArray.addMove(replaced);
replaced.setReplaced(ROOK | color);
moveArray.addMove(replaced);
replaced.setReplaced(QUEEN | color);
moveArray.addMove(replaced);
rightPawnAttack &= ~vec1_cells[to];
}
leftPawnAttack = (pawn << 7) & ~vertical[7] & emask & ~currentState.figures[KING];
moveArray.num_attacks += popcount64(leftPawnAttack);
while(leftPawnAttack != 0) {
uint64_t to = firstOne(leftPawnAttack);
BitMove replaced = BitMove(getFigure(to), PAWN | color, to / 8 - 1, to % 8 + 1, to / 8, to % 8);
replaced.setReplaced(KNIGHT | color);
moveArray.addMove(replaced);
replaced.setReplaced(BISHOP | color);
moveArray.addMove(replaced);
replaced.setReplaced(ROOK | color);
moveArray.addMove(replaced);
replaced.setReplaced(QUEEN | color);
moveArray.addMove(replaced);
leftPawnAttack &= ~vec1_cells[to];
}
} else {
uint64_t pawn = currentState.figures[PAWN] & mask & ~horizontal[1];
uint64_t rightPawnAttack = (pawn >> 9) & ~vertical[7] & emask & ~currentState.figures[KING];
moveArray.num_attacks += popcount64(rightPawnAttack);
while(rightPawnAttack != 0) {
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