mirror of
https://github.com/ggerganov/whisper.cpp.git
synced 2025-02-19 00:30:27 +00:00
291 lines
12 KiB
C++
291 lines
12 KiB
C++
#include "Chessboard.h"
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#include <vector>
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static constexpr std::array<const char*, 64> positions = {
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"a1", "b1", "c1", "d1", "e1", "f1", "g1", "h1",
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"a2", "b2", "c2", "d2", "e2", "f2", "g2", "h2",
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"a3", "b3", "c3", "d3", "e3", "f3", "g3", "h3",
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"a4", "b4", "c4", "d4", "e4", "f4", "g4", "h4",
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"a5", "b5", "c5", "d5", "e5", "f5", "g5", "h5",
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"a6", "b6", "c6", "d6", "e6", "f6", "g6", "h6",
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"a7", "b7", "c7", "d7", "e7", "f7", "g7", "h7",
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"a8", "b8", "c8", "d8", "e8", "f8", "g8", "h8",
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};
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static constexpr std::array<const char*, 6> pieceNames = {
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"pawn", "knight", "bishop", "rook", "queen", "king",
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};
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Chessboard::Chessboard()
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: blackPieces {{
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{Piece::Pawn, Piece::Black, 48 },
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{Piece::Pawn, Piece::Black, 49 },
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{Piece::Pawn, Piece::Black, 50 },
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{Piece::Pawn, Piece::Black, 51 },
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{Piece::Pawn, Piece::Black, 52 },
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{Piece::Pawn, Piece::Black, 53 },
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{Piece::Pawn, Piece::Black, 54 },
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{Piece::Pawn, Piece::Black, 55 },
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{Piece::Rook, Piece::Black, 56 },
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{Piece::Knight, Piece::Black, 57 },
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{Piece::Bishop, Piece::Black, 58 },
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{Piece::Queen, Piece::Black, 59 },
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{Piece::King, Piece::Black, 60 },
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{Piece::Bishop, Piece::Black, 61 },
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{Piece::Knight, Piece::Black, 62 },
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{Piece::Rook, Piece::Black, 63 },
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}}
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, whitePieces {{
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{Piece::Pawn, Piece::White, 8 },
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{Piece::Pawn, Piece::White, 9 },
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{Piece::Pawn, Piece::White, 10 },
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{Piece::Pawn, Piece::White, 11 },
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{Piece::Pawn, Piece::White, 12 },
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{Piece::Pawn, Piece::White, 13 },
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{Piece::Pawn, Piece::White, 14 },
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{Piece::Pawn, Piece::White, 15 },
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{Piece::Rook, Piece::White, 0 },
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{Piece::Knight, Piece::White, 1 },
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{Piece::Bishop, Piece::White, 2 },
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{Piece::Queen, Piece::White, 3 },
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{Piece::King, Piece::White, 4 },
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{Piece::Bishop, Piece::White, 5 },
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{Piece::Knight, Piece::White, 6 },
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{Piece::Rook, Piece::White, 7 },
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}}
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, board {{
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&whitePieces[ 8], &whitePieces[ 9], &whitePieces[10], &whitePieces[11], &whitePieces[12], &whitePieces[13], &whitePieces[14], &whitePieces[15],
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&whitePieces[ 0], &whitePieces[ 1], &whitePieces[ 2], &whitePieces[ 3], &whitePieces[ 4], &whitePieces[ 5], &whitePieces[ 6], &whitePieces[ 7],
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nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
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&blackPieces[ 0], &blackPieces[ 1], &blackPieces[ 2], &blackPieces[ 3], &blackPieces[ 4], &blackPieces[ 5], &blackPieces[ 6], &blackPieces[ 7],
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&blackPieces[ 8], &blackPieces[ 9], &blackPieces[10], &blackPieces[11], &blackPieces[12], &blackPieces[13], &blackPieces[14], &blackPieces[15],
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}}
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{
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static_assert(pieceNames.size() == Chessboard::Piece::Taken, "Mismatch between piece names and types");
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}
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std::string Chessboard::stringifyBoard() {
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static constexpr std::array<char, 6> blackShort = {
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'p', 'n', 'b', 'r', 'q', 'k',
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};
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static constexpr std::array<char, 6> whiteShort = {
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'P', 'N', 'B', 'R', 'Q', 'K',
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};
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std::string result;
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result.reserve(16 + 2 * 64 + 16);
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for (char rank = 'a'; rank <= 'h'; ++rank) {
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result.push_back(rank);
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result.push_back(' ');
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}
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result.back() = '\n';
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for (int i = 7; i >= 0; --i) {
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for (int j = 0; j < 8; ++j) {
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if (auto p = board[i * 8 + j]; p) result.push_back(p->color == Piece::White ? whiteShort[p->type] : blackShort[p->type]);
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else result.push_back('.');
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result.push_back(' ');
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}
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result.push_back('0' + i + 1);
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result.push_back('\n');
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}
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return result;
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}
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std::string Chessboard::processTranscription(const std::string& t) {
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std::vector<std::string> moves;
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size_t cur = 0;
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size_t last = 0;
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while (cur != std::string::npos) {
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cur = t.find(',', last);
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moves.push_back(t.substr(last, cur));
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last = cur + 1;
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}
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// fixme: lookup depends on grammar
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int count = m_moveCounter;
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std::vector<Move> pendingMoves;
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for (auto& move : moves) {
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fprintf(stdout, "%s: Move '%s%s%s'\n", __func__, "\033[1m", move.c_str(), "\033[0m");
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if (move.empty()) continue;
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auto pieceIndex = 0u;
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for (; pieceIndex < pieceNames.size(); ++pieceIndex) {
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if (std::string::npos != move.find(pieceNames[pieceIndex])) break;
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}
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auto posIndex = 0u;
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for (; posIndex < positions.size(); ++posIndex) {
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if (std::string::npos != move.find(positions[posIndex])) break;
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}
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if (pieceIndex >= pieceNames.size() || posIndex >= positions.size()) continue;
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auto& pieces = count % 2 ? blackPieces : whitePieces;
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auto type = Piece::Types(pieceIndex);
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pieceIndex = 0;
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for (; pieceIndex < pieces.size(); ++pieceIndex) {
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if (pieces[pieceIndex].type == type && checkNext(pieces[pieceIndex], posIndex)) break;
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}
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if (pieceIndex < pieces.size()) {
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pendingMoves.emplace_back(pieces[pieceIndex].pos, posIndex);
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}
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++count;
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}
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auto result = stringifyMoves(pendingMoves);
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commitMoves(pendingMoves);
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m_moveCounter = count;
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return result;
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}
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bool Chessboard::checkNext(const Piece& piece, int pos, bool kingCheck) {
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if (piece.type == Piece::Taken) return false;
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if (piece.pos == pos) return false;
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int i = piece.pos / 8;
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int j = piece.pos - i * 8;
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int ii = pos / 8;
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int jj = pos - ii * 8;
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if (piece.type == Piece::Pawn) {
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if (piece.color == Piece::White) {
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int direction = piece.color == Piece::White ? 1 : -1;
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if (j == jj) {
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if (i == ii - direction) return board[pos] == nullptr;
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if (i == ii - direction * 2) return board[(ii - direction) * 8 + jj] == nullptr && board[pos] == nullptr;
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}
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else if (j + 1 == jj || j - 1 == jj) {
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if (i == ii - direction) return board[pos] != nullptr && board[pos]->color != piece.color;
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}
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}
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return false;
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}
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if (piece.type == Piece::Knight) {
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int di = std::abs(i - ii);
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int dj = std::abs(j - jj);
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if ((di == 2 && dj == 1) || (di == 1 && dj == 2)) return board[pos] == nullptr || board[pos]->color != piece.color;
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return false;
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}
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if (piece.type == Piece::Bishop) {
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if (i - j == ii - jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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j += direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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j += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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if (i + j == ii + jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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j -= direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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j -= direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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return false;
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}
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if (piece.type == Piece::Rook) {
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if (i == ii) {
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int direction = j < jj ? 1 : -1;
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j += direction;
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while (j != jj) {
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if (board[i * 8 + j]) return false;
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j += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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if (j == jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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return false;
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}
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if (piece.type == Piece::Queen) {
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if (i - j == ii - jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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j += direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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j += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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if (i + j == ii + jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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j -= direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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j -= direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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if (i == ii) {
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int direction = j < jj ? 1 : -1;
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j += direction;
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while (j != jj) {
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if (board[i * 8 + j]) return false;
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j += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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if (j == jj) {
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int direction = i < ii ? 1 : -1;
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i += direction;
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while (i != ii) {
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if (board[i * 8 + j]) return false;
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i += direction;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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return false;
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}
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if (piece.type == Piece::King) {
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if (std::abs(i - ii) < 2 && std::abs(j - jj) < 2) {
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auto& pieces = piece.color == Piece::White ? whitePieces : blackPieces;
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for (auto& enemyPiece: pieces) {
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if (!kingCheck && piece.type != Piece::Taken && checkNext(enemyPiece, pos, true)) return false;
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}
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return board[pos] == nullptr || board[pos]->color != piece.color;
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}
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}
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return false;
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}
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std::string Chessboard::stringifyMoves(const std::vector<Move>& pendingMoves) {
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std::string res;
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for (auto& m : pendingMoves) {
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res.append(positions[m.first]);
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res.push_back('-');
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res.append(positions[m.second]);
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res.push_back(' ');
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}
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if (!res.empty()) res.pop_back();
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return res;
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}
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void Chessboard::commitMoves(std::vector<Move>& pendingMoves) {
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for (auto& m : pendingMoves) {
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if (!board[m.first] || (board[m.second] && board[m.first]->type == board[m.second]->type)) continue;
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if (board[m.second]) board[m.second]->type = Piece::Taken;
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board[m.second] = board[m.first];
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board[m.first] = nullptr;
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}
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pendingMoves.clear();
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} |