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-rw-r--r--src/board.cpp140
-rw-r--r--src/board.hpp4
-rw-r--r--src/main.cpp44
-rw-r--r--src/uci.cpp167
-rw-r--r--src/uci.hpp5
5 files changed, 14 insertions, 346 deletions
diff --git a/src/board.cpp b/src/board.cpp
index 41eef19..4daddfd 100644
--- a/src/board.cpp
+++ b/src/board.cpp
@@ -1,34 +1,8 @@
#include "board.hpp"
-#include "bot.hpp"
#include "zobrist.hpp"
#include <cassert>
-#include <cstdio>
-#include <iostream>
-#include <print>
#include <string>
-std::string toChar(PieceType type, bool white) {
- switch (type) {
- case NONE:
- return " ";
- case KING:
- return white ? "♚" : "♔";
- case QUEEN:
- return white ? "♛" : "♕";
- case ROOK:
- return white ? "♜" : "♖";
- case BISHOP:
- return white ? "♝" : "♗";
- case KNIGHT:
- return white ? "♞" : "♘";
- case PAWN:
- return white ? "♟" : "♙";
- default:
- assert(false && "Unknown piece");
- return " ";
- }
-}
-
Piece createPiece(PieceType type, bool color, bool moved) {
Piece piece;
piece.type = type;
@@ -36,121 +10,7 @@ Piece createPiece(PieceType type, bool color, bool moved) {
piece.moved = moved;
return piece;
}
-void printBoard(Game *b) {
- std::string line = " +------------------------+\n";
- std::string whiteLetters = " a b c d e f g h \n";
- std::string blackLetters = " h g f e d c b a \n";
-
- const char *lightSquare = "\033[48;5;245m";
- const char *darkSquare = "\033[48;5;29m";
- const char *reset = "\033[0m";
-
- std::cout << (b->turn ? whiteLetters : blackLetters);
- std::cout << line;
-
- if (b->turn) {
- for (int rank = 0; rank < 8; rank++) {
- std::printf("%d |", 8 - rank);
-
- for (int file = 0; file < 8; file++) {
- Piece piece = b->pieces[rank * 8 + file];
- std::string symbol = toChar(piece.type, piece.color);
-
- const char *bg = ((rank + file) % 2 == 0) ? lightSquare : darkSquare;
-
- std::cout << bg << " " << symbol << " " << reset;
- }
-
- std::printf("| %d\n", 8 - rank);
- }
- } else {
- for (int rank = 7; rank >= 0; rank--) {
- std::printf("%d |", 8 - rank);
-
- for (int file = 7; file >= 0; file--) {
- Piece piece = b->pieces[rank * 8 + file];
- std::string symbol = toChar(piece.type, piece.color);
-
- const char *bg = ((rank + file) % 2 == 0) ? lightSquare : darkSquare;
-
- std::cout << bg << " " << symbol << " " << reset;
- }
-
- std::printf("| %d\n", 8 - rank);
- }
- }
-
- std::cout << line;
- std::cout << (b->turn ? whiteLetters : blackLetters);
-
- std::println();
- std::println("Turn: {}", b->turn ? "White" : "Black");
-
- assert(b->castle != "");
-
- std::println("Castling: {}", b->castle);
- std::println("Can enpassant: {}", b->canEnpassant ? "Yes" : "No");
- std::println("Where enpassant: {}{}", (char)((int)b->enPassant.file + 'A'),
- 8 - (int)b->enPassant.rank);
- std::printf("Move clock: %d\n", b->MoveClock);
- std::printf("Half move clock: %d\n", b->halfMoveClock);
- std::printf("Board Eval: %f\n", EvaluateBoardForWhite(b, 0));
-}
-void PlayMove(Move move, Game *b) {
- // TODO: add all fide behavior
- Piece piece = b->pieces[PositionToIndex(move.From)];
- Piece piece2 = b->pieces[PositionToIndex(move.To)];
- if (piece2.type != NONE) {
- if (piece2.color == b->turn) {
- assert(false && "capturing friendly piece error");
- }
- }
- piece.moved = true;
- if (piece.type == PAWN || piece2.type != NONE) {
- b->halfMoveClock = 0;
- } else {
- b->halfMoveClock++;
- }
- if (piece.type == PAWN && b->canEnpassant && move.To == b->enPassant) {
- Position capturedPawn = move.To;
- capturedPawn.rank += piece.color ? 1 : -1;
- b->pieces[PositionToIndex(capturedPawn)] = {false, NONE, false};
- }
-
- b->canEnpassant = false;
- b->MoveClock++;
-
- if (piece.type == PAWN) {
- Position to = move.To;
- to.rank -= (piece.color ? -2 : 2);
- if (to == move.From) {
- b->canEnpassant = true;
- Position target = move.From;
- target.rank += piece.color ? -1 : 1;
- b->enPassant = target;
- };
- }
-
- if (piece.type == PAWN && move.To.rank == (piece.color ? 0 : 7)) {
- // TODO parse the promote type from uci isntead of ignoreting it
- piece.type = move.promotion == NONE ? QUEEN : move.promotion;
- }
- if (b->halfMoveClock >= 50) {
- b->state = DRAW;
- }
- b->pieces[PositionToIndex(move.To)] = piece;
- b->pieces[PositionToIndex(move.From)] = {false, NONE, false};
-
- b->turn = !b->turn;
-
- uint64_t key = GenerateZobristKey(b);
-
- b->ThreeFoldMap[key]++;
- if (b->ThreeFoldMap[key] >= 3) {
- b->state = DRAW;
- }
-};
int PositionToIndex(Position i) { return i.rank * 8 + i.file; }
UndoMove MakeMove(Move move, Game *g) {
diff --git a/src/board.hpp b/src/board.hpp
index 2c3bba9..993a66d 100644
--- a/src/board.hpp
+++ b/src/board.hpp
@@ -4,6 +4,7 @@
#include <cstdint>
#include <string>
#include <unordered_map>
+
enum PieceType {
NONE,
PAWN,
@@ -21,7 +22,6 @@ enum GameState {
STALEMATE,
DRAW,
};
-std::string toChar(PieceType type, bool white);
struct Piece {
bool color = 0;
@@ -77,10 +77,8 @@ struct UndoMove {
uint64_t zobristKey;
GameState oldState;
};
-void printBoard(Game *b);
Piece createPiece(PieceType type, bool color, bool moved = false);
-// void PlayMove(Move move, Game *b);
int PositionToIndex(Position i);
UndoMove MakeMove(Move move, Game *g);
void UnMakeMove(UndoMove undo, Game *g);
diff --git a/src/main.cpp b/src/main.cpp
index ddeb304..8a1821e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,52 +1,12 @@
-#include "board.hpp"
-#include "fen.hpp"
-#include "moves.hpp"
#include "uci.hpp"
#include "zobrist.hpp"
-#include <cstdio>
+
#include <cstdlib>
#include <ctime>
-#include <string>
-
-using namespace std;
-
-enum Mode {
- EXIT,
- REPL,
-};
-
-void setAllPiecesToEmpty(Game *b) {
- Piece EmptyPiece = {
- false,
- NONE,
- false,
- };
- for (int i = 0; i < 64; i++) {
- b->pieces[i] = EmptyPiece;
- };
-};
-Game initBoard(string startingFEN) {
- Game b;
- b.enPassant = IndexToPosition(0); // default value
- b.canEnpassant = false;
- b.state = TURN;
- b.turn = true;
- b.castle = "";
- b.halfMoveClock = 0;
- b.MoveClock = 0;
- setBoardFen(startingFEN, &b);
- return b;
-};
-int main(int argc, char **argv) {
+int main() {
InitZobrist();
srand(time(0));
- if (argc < 1 || argc > 2) {
- printf("wrong arg count, use: ./chess [--repl for debugging]\n");
- return 1;
- }
- if (argc > 1 && std::string(argv[1]) == "--repl")
- return startREPL();
Uci();
return 0;
diff --git a/src/uci.cpp b/src/uci.cpp
index 6f0e5e6..1f634fe 100644
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -7,8 +7,6 @@
#include <algorithm>
#include <cassert>
#include <cctype>
-#include <cstdint>
-#include <cstdlib>
#include <iostream>
#include <print>
#include <sstream>
@@ -33,20 +31,7 @@ void LogUci(const std::string &message) {
uciLog.flush();
}
using namespace std;
-bool isValidChessRank(char rank) {
- if (rank >= '1' && rank <= '8') {
- return true;
- } else {
- return false;
- }
-}
-bool isValidChessFile(char rank) {
- if (rank >= 'A' && rank <= 'H') {
- return true;
- } else {
- return false;
- }
-}
+
Move UciToMove(string uci) {
Position from;
Position to;
@@ -69,6 +54,16 @@ static Game initBoard(string startingFEN) {
b.halfMoveClock = 0;
b.MoveClock = 0;
setBoardFen(startingFEN, &b);
+
+ Piece EmptyPiece = {
+ false,
+ NONE,
+ false,
+ };
+ for (int i = 0; i < 64; i++) {
+ b.pieces[i] = EmptyPiece;
+ };
+
return b;
};
void Uci() {
@@ -161,143 +156,3 @@ void Uci() {
}
}
}
-int startREPL() {
-
- Game g =
- initBoard("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1");
- Game *b = &g;
- printBoard(b);
- while (true) {
- GetLegalMoves(b);
- if (b->state == STALEMATE) {
- printBoard(b);
- std::println();
- std::cout << "\033[1mStalemate\033[0m" << "\n";
- std::println();
- return 0;
- }
- if (b->state == DRAW) {
- printBoard(b);
- std::println();
- std::cout << "\033[1mDraw\033[0m" << "\n";
- std::println();
- return 0;
- }
- if (b->state == WHITE_WON) {
- printBoard(b);
- std::cout << "\033[1mChechmate White won\033[0m" << "\n";
- return 0;
- }
- if (b->state == BLACK_WON) {
- printBoard(b);
- std::cout << "\033[1mCheckmate Black won\033[0m" << "\n";
- return 0;
- }
- if (b->state == TURN) {
- if (true) {
- Move move = EngineGetBestMove(b);
- MakeMove(move, b);
- printBoard(b);
- continue;
- }
- }
- std::cout << "> ";
- std::string command;
- if (!(std::cin >> command)) {
- std::println();
- std::cout << "Exiting...\n";
- return EXIT_SUCCESS;
- }
-
- std::transform(command.begin(), command.end(), command.begin(), ::toupper);
-
- std::cout << command << "\n";
- if (command == "EXIT") {
- std::println();
- std::cout << "Exiting...\n";
- return EXIT_SUCCESS;
- }
- if (command == "RESING") {
- std::cout << "\033[1mOK\033[0m" << "\n";
- if (b->turn) {
- b->state = BLACK_WON;
- } else {
- b->state = WHITE_WON;
- }
- continue;
- }
- if (command == "BOARD") {
- printBoard(b);
- continue;
- }
- if (command == "MOVES" || command == "MOVE") {
- auto moves = GetLegalMoves(b);
- PrintMoves(moves);
- continue;
- }
- if (command.length() != 4) {
- std::cout << "Unknown Command, use EXIT to exit";
- std::println();
- continue;
- }
- if (b->state == TURN) {
- if (!isValidChessFile(command[0])) {
- std::cout << "ERROR: Expected valid file at first place";
- std::println();
- continue;
- }
-
- if (!isValidChessRank(command[1])) {
- std::cout << "ERROR: Expected valid rank at second place";
- std::println();
- continue;
- }
-
- if (!isValidChessFile(command[2])) {
- std::cout << "ERROR: Expected valid file at third place";
- std::println();
- continue;
- }
-
- if (!isValidChessRank(command[3])) {
- std::cout << "ERROR: Expected valid rank at four place";
- std::println();
- continue;
- }
-
- // we know its a valid chess pos
- int fromFile = command[0] - 'A';
- int fromRank = '8' - command[1];
- int toFile = command[2] - 'A';
- int toRank = '8' - command[3];
- std::cout << fromFile << "\n";
- std::cout << fromRank << "\n";
- std::cout << toFile << "\n";
- std::cout << toRank << "\n";
- Move move = {
- {static_cast<uint8_t>(fromRank), static_cast<uint8_t>(fromFile)},
- {static_cast<uint8_t>(toRank), static_cast<uint8_t>(toFile)}};
-
- auto moves = GetLegalMoves(b);
- if (!(std::ranges::find(moves, move) != moves.end())) {
- std::cout << "Invalid move!";
- std::println();
- PrintMoves(moves);
- continue;
- }
- std::println();
- MakeMove(move, b);
- printBoard(b);
- }
- }
-}
-
-void PrintMoves(const std::vector<Move> &moves) {
- std::cout << "Moves (" << moves.size() << "):\n";
-
- for (const Move &move : moves) {
- std::cout << (char)((int)move.From.file + 'A') << 8 - (int)move.From.rank
- << " -> " << (char)((int)move.To.file + 'A')
- << 8 - (int)move.To.rank << "\n";
- }
-}
diff --git a/src/uci.hpp b/src/uci.hpp
index 18e216e..4d0a91b 100644
--- a/src/uci.hpp
+++ b/src/uci.hpp
@@ -3,12 +3,7 @@
#include "board.hpp"
#include <string>
-#include <vector>
-int startREPL();
-void PrintMoves(const std::vector<Move> &moves);
-bool isValidChessRank(char rank);
-bool isValidChessFile(char rank);
Move UciToMove(std::string uci);
void LogUci(const std::string &message);
void Uci();
generated by cgit v1.2.3 (git 2.39.1) at 2026-08-25 03:39:15 +0000