/* Main functions controlling program */ #include #include #include #include #include #include #include #include #include "define.h" #if UNIX #include #include #else #include #include #undef BLACK #undef WHITE #include #define BLACK 0 #define WHITE 1 #endif // Custom headers, defining external functions and struct types for // board, piece and moves. And defining global variables. #include "chess.h" #include "const.h" #include "funct.h" #include "main.h" #include "hash.h" // moves to time control, base time, increment, time left; int omttc = 0, mttc = 0, inc = 0; float base = 30, timeleft = 30; int display_board = 0; int analysis_mode = 0; extern int fail; // flag for fail high/fail low from search extern move ponder_move; // xboard flag int xboard, post, ics, ALLEG = 0, hintflag = 0, count = 1; int ponder_flag = 1, learn_bk, shout_book; extern int ponder, last_ponder, learn_count, learned, TAB_SIZE, PAWN_SIZE; // executable directory char exec_path[100]; #if UNIX fd_set read_fds; struct timeval timeout = { 0, 0 }; #endif /*------------------------- Main Function ---------------------------*/ // Main control function that interacts with the User int main(int argc, char *argv[]) { char mstring[10]; move hint; xboard = 0; ponder = 0; ics = 0; learn_count = 0; learned = 0; learn_bk = 1; shout_book = 0; strcpy(exec_path, argv[0]); // parsing exec path int last_slash = 0; for(int j = 0; j < 100; j++) { if(exec_path[j] == '\0') break; if(exec_path[j] == '\\') last_slash = j; if(exec_path[j] == '/') last_slash = j; } exec_path[last_slash+1] = '\0'; open_hash(); gen_check_table(); set_score_param(); if(argc > 1) { if(!strcmp(argv[1], "xb")) xboard = 1; if(!strcmp(argv[1], "hash")) set_hash_size(atoi(argv[2])); if(argc > 2) if(!strcmp(argv[2], "hash")) set_hash_size(atoi(argv[3])); } if(!xboard) { cout << "\nExperimental Chess Program (EXchess) version " << VERS << "," << "\nCopyright (C) 1997-98 Daniel C. Homan, Waltham MA, USA" << "\nEXchess comes with ABSOLUTELY NO WARRANTY. This is free" << "\nsoftware, and you are welcome to redistribute it under" << "\ncertain conditions. This program is distributed under the" << "\nGNU public license. See the files license.txt and readme.txt" << "\nfor more information.\n\n"; cout << "Hash size = " << TAB_SIZE << " entries, " << TAB_SIZE*sizeof(hash_rec) << " bytes\n"; cout << "Pawn size = " << PAWN_SIZE << " entries, " << PAWN_SIZE*sizeof(pawn_rec) << " bytes\n\n"; cout << "Type 'help' for a list of commands.\n"; } setboard(i_pos, 'w', 1); // set up the board while (count > 0) { // find a hint move, check book first then look in pv if(hintflag) { hint.t = 0; if(last_ponder) hint = ponder_move; else if(book) hint = opening_book(game_pos.hcode, &game_pos); if(!hint.t) hint = pc[0][1]; if(hint.t) { print_move(game_pos, hint, mstring); cout << "Hint: " << mstring << "\n"; } hintflag = 0; } signal(SIGINT, SIG_IGN); // pondering if possible if(T > 2 && p_side == game_pos.wtm && !both && !last_ponder && ponder_flag) { if(!xboard) cout << "pondering... (press any key to interrupt)\n"; cout.flush(); ponder = 1; search(game_pos, 10000, T+1); ponder = 0; last_ponder = 1; } // if analysis_mode, do some analysis if(analysis_mode) { search(game_pos, 360000, T); } if(!game_pos.wtm) // if it is black's turn { if(both) p_side = 0; if(!xboard) cout << "Black-To-Move[" << ceil(T/2) << "]: "; } else // or if it is white's { if(both) p_side = 1; if(!xboard) cout << "White-To-Move[" << (ceil(T/2) + 1) << "]: "; } cout.flush(); legalmoves(&game_pos, &movelist); // find legal moves if(p_side == game_pos.wtm || game_over) { cin >> response; // get the command if((last_ponder || analysis_mode) && UNIX) cout << "\n"; parse_command(); // parse it } else { if(!xboard) cout << "Thinking ...\n"; cout.flush(); make_move(); last_ponder = 0; T++; } cout.flush(); } close_hash(); return 0; } // Function to takeback moves // tm is the number of moves to take back. // 1 or 2 with current setup void takeback(int tm) { int temp_turn = T; setboard(i_pos, 'w', 1); T = temp_turn; if(!(T % 2)) p_side = 0; if(p_side == 0 && tm == 1) p_side = 1; for (int ip = 0; ip <= T-2-tm; ip++) { exec_move(&game_pos, game_history[ip], 0); } if(!xboard) drawboard(); T = T - tm; } // Function to make the next move... If it is the computer's turn, this // function calls the search algorithm, takes the best move given by that // search, and makes the move - unless it is a check move: then it flagges // stale-mate..... // The function also looks to see if this move places the opponent in check // or check-mate. void make_move() { time_t mtime = time(NULL); int time_limit, legal; char mstring[10]; // If it is not the player's turn, figure out how much time to use, // execute the search algorithm to start the search process and return // the best move. if(mttc && mttc < 25) { time_limit = int(timeleft/(mttc+1)) + inc; } else if (mttc >= 25 || xboard) { time_limit = int(timeleft/25) + inc; } else { time_limit = int(timeleft); } if (p_side != game_pos.wtm) { best = search(game_pos, time_limit, T); timeleft -= time(NULL) - mtime; timeleft += inc; if(mttc) { mttc--; if(!mttc) { timeleft += base; mttc = omttc; } } if(mttc <= 0 && !xboard) { timeleft = base; mttc = omttc; } } // execute the move.... temp_pos = game_pos; legal = exec_move(&temp_pos, best, 0); // Is the move legal? if not Error .... if (legal) { // if it is the computer's turn - echo the move if(p_side != game_pos.wtm) { if(game_pos.wtm) { cout << (ceil(T/2) + 1) << ". "; if(xboard) cout << "... "; } else { cout << ceil(T/2) << ". ... "; } print_move(game_pos, best, mstring); cout << mstring; cout << "\n"; } last_pos = game_pos; // Save last position game_pos = temp_pos; // actually execute move // Check if we have, check_mate, stale_mate, or a continuing game... switch (check_mate(&game_pos)) { case 0: if(game_pos.fifty >= 100) { cout << "1/2-1/2 {50 moves}\n"; if(ics) cout << "tellics draw\n"; } else if(check(&game_pos, game_pos.wtm) && !xboard) { cout << "Check!\n"; } break; case 1: game_over = 1; if(!game_pos.wtm) cout << "1-0 {White Mates}\n"; else cout << "0-1 {Black Mates}\n"; break; case 2: game_over = 1; cout << "1/2-1/2 {Stalemate}\n"; } game_history[T-1] = best; // record the move in the history list p_list[T-1] = game_pos.hcode; if(!xboard && display_board) drawboard(); // draw the resulting board } else { game_over = 1; cout << "Error - please reset"; } } // This function sets up the board from EPD format void setboard(char inboard[60], char ms, int castle) { int rx = 0, ry = 7, i; // control variables // no book learning yet learn_count = 0; learned = 0; // game is not over game_over = 0; // initializing castling status if necessary if (castle) { game_pos.castle = 15; } else { game_pos.castle = 0; } // Side to move if (ms == 'b') { T = 2; p_side = 0; game_pos.wtm = 0; } else { T = 1; p_side = 1; game_pos.wtm = 1; } // Other game parameters game_pos.ep = 0; game_pos.fifty = 0; game_pos.last.t = NOMOVE; // clear the board for(int ci = 0; ci < 64; ci++) { game_pos.sq[ci] = empty; } // Setting up the board for (int ri = 0; ri < 60; ri++) { switch (inboard[ri]) { case '/': ry--; rx = 0; break; case '1': game_pos.sq[SQR(rx,ry)] = empty; rx++; break; case '2': for(i=1;i<=2;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '3': for(i=1;i<=3;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '4': for(i=1;i<=4;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '5': for(i=1;i<=5;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '6': for(i=1;i<=6;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '7': for(i=1;i<=7;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case '8': for(i=1;i<=8;i++) { game_pos.sq[SQR(rx,ry)] = empty; rx++; } break; case 'p': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = PAWN; rx++; break; case 'n': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = KNIGHT; rx++; break; case 'b': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = BISHOP; rx++; break; case 'r': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = ROOK; rx++; break; case 'q': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = QUEEN; rx++; break; case 'k': game_pos.sq[SQR(rx,ry)].side = 0; game_pos.sq[SQR(rx,ry)].type = KING; game_pos.kingpos[0] = SQR(rx,ry); rx++; break; case 'P': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = PAWN; rx++; break; case 'N': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = KNIGHT; rx++; break; case 'B': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = BISHOP; rx++; break; case 'R': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = ROOK; rx++; break; case 'Q': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = QUEEN; rx++; break; case 'K': game_pos.sq[SQR(rx,ry)].side = 1; game_pos.sq[SQR(rx,ry)].type = KING; game_pos.kingpos[1] = SQR(rx,ry); rx++; break; } if(ry <= 0 && rx >= 8) break; if(inboard[ri] == '\0') break; } // generate the hash_code for this position game_pos.hcode = gen_code(&game_pos); game_pos.has_castled[0] = 0; game_pos.has_castled[1] = 0; game_pos.check = check(&game_pos, game_pos.wtm); } // This function is a special edit mode for xboard/winboard void board_edit() { char edcom[4]; // edit command int edside = 1; // side being edited int ex, ey; // edit coordinates game_pos.castle = 0; // no book learning yet learn_count = 0; learned = 0; while(edside > -1) { cin >> edcom; if(edcom[0] == '#') { // clear the board for(int ci = 0; ci < 64; ci++) { game_pos.sq[ci] = empty; } } else if(edcom[0] == 'c') { edside ^= 1; // change side to edit continue; } else if(edcom[0] == '.') { // generate the hash_code for this position game_pos.hcode = gen_code(&game_pos); game_pos.has_castled[0] = 0; game_pos.has_castled[1] = 0; game_pos.check = check(&game_pos, game_pos.wtm); return; } else { ex = CHAR_FILE(edcom[1]); ey = CHAR_ROW(edcom[2]); game_pos.sq[SQR(ex,ey)].side = edside; switch(edcom[0]) { case 'P': game_pos.sq[SQR(ex,ey)].type = PAWN; break; case 'N': game_pos.sq[SQR(ex,ey)].type = KNIGHT; break; case 'B': game_pos.sq[SQR(ex,ey)].type = BISHOP; break; case 'R': game_pos.sq[SQR(ex,ey)].type = ROOK; break; case 'Q': game_pos.sq[SQR(ex,ey)].type = QUEEN; break; case 'K': game_pos.sq[SQR(ex,ey)].type = KING; game_pos.kingpos[edside] = SQR(ex,ey); break; case 'X': game_pos.sq[SQR(ex,ey)] = empty; break; } } } } // This function draws the graphical board in a very simple way void drawboard() { char mstring[10]; // character string to hold move // the following for loop steps through the board and paints each square for (int j = 7; j >= 0; j--) { cout << "\n +---+---+---+---+---+---+---+---+\n" << (j+1) << " | "; for (int i = 0; i <= 7; i++) { if(!game_pos.sq[SQR(i,j)].side) cout << "\b<" << name[game_pos.sq[SQR(i,j)].type] << ">| "; else if(game_pos.sq[SQR(i,j)].side == 1) cout << name[game_pos.sq[SQR(i,j)].type] << " | "; else if(!((i+j)&1)) cout << "\b:::| "; else cout << " | "; } if(j==7) { if(game_pos.wtm) cout << " White to move"; else cout << " Black to move"; } if(j==6) { cout << " castle: "; if(game_pos.castle&1) cout << "K"; if(game_pos.castle&2) cout << "Q"; if(game_pos.castle&4) cout << "k"; if(game_pos.castle&8) cout << "q"; if(!game_pos.castle) cout << "-"; } if(j==5 && game_pos.ep) cout << " ep: " << char(FILE(game_pos.ep) + 97) << (RANK(game_pos.ep) + 1); if(j==4 && game_pos.last.t) { cout << " last: "; print_move(last_pos, game_pos.last, mstring); cout << mstring; } if(j==3) cout << " fifty: " << ceil(game_pos.fifty/2); if(j==2) cout << " Computer time: " << timeleft << " seconds"; } cout << "\n +---+---+---+---+---+---+---+---+"; cout << "\n a b c d e f g h \n\n"; } // Help function void help() { char ch; // dummy character cout << "\n Commands ........ "; cout << "\n\n Enter a move in standard algebraic notation,"; cout << "\n Nf3, e4, O-O, d8=Q, Bxf7, Ned7, etc...."; cout << "\n Other notation's like: g1f3, e2e4, etc... are also ok."; cout << "\n\n new -> start a new game"; cout << "\n quit -> end EXchess"; cout << "\n save -> save the game to a text file"; cout << "\n go -> computer takes side on move"; cout << "\n white -> white to move, EXchess takes black"; cout << "\n black -> black to move, EXchess takes white"; cout << "\n book -> toggle opening book"; cout << "\n post -> turn on display of computer thinking"; cout << "\n nopost -> turn off display of computer thinking"; cout << "\n setboard rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w"; cout << "\n -> set board using EPD notation"; cout << "\n level 40 5 0 -> set level of play:"; cout << "\n 1st number is the number of move till time control"; cout << "\n 2nd number is the base time control in minutes"; cout << "\n 3rd number is the increment in seconds"; cout << "\n takeback -> takeback last move"; cout << "\n hint -> get a hint from the program"; cout << "\n testsuite -> run a testsuite"; cout << "\n display -> display the board"; cout << "\n------------ Enter 'n' for remaining commands: "; cin >> ch; if(ch == 'n') { cout << "\n nodisplay -> turn off board display"; cout << "\n list -> list the legal moves"; cout << "\n clist -> list the legal captures"; cout << "\n score -> score the current position"; cout << "\n analyze -> enter analysis mode"; cout << "\n exit -> exit analysis mode"; cout << "\n ponder -> toggle pondering"; cout << "\n hash n -> set hash table size to n Mbytes"; cout << "\n build -> build a new opening book from a pgn file,"; cout << "\n it will replace the old one."; } cout << "\n\n"; } /* Function to print the possible moves to the screen */ // Useful for debugging void type_moves() { int j = 0; // dummy count variable to determine when to // send a newline character char mstring[10]; // character string for the move for(int i = 0; i < movelist.count; i++) { temp_pos = game_pos; // if it is legal, print it! if(exec_move(&temp_pos, movelist.mv[i].m, 0)) { if(!(j%6) && j) cout << "\n"; // newline if we have printed // 6 moves on a line else if(j) cout << ", "; // comma to separate moves print_move(game_pos, movelist.mv[i].m, mstring); // print the move // to the string cout << mstring; j++; // increment printed moves variable } } cout << "\n"; } /* Function to print out the possible captures to the screen */ // Useful for debugging void type_capts() { int j = 0; // dummy variable for counting printed moves char mstring[10]; // character string to hold move move_list clist; // capture list captures(&game_pos, &clist); for(int i = 0; i < clist.count; i++) { temp_pos = game_pos; // if it is legal, print it! if(exec_move(&temp_pos, clist.mv[i].m, 0)) { if(!(j%6) && j) cout << "\n"; // newline if we have printed // 6 moves on a line else if(j) cout << ", "; // comma to separate moves print_move(game_pos, clist.mv[i].m, mstring); // print the move // to the string cout << mstring; j++; // increment printed moves variable } } cout << "\n"; } /* Function to parse the command from the user */ // Some of these commands are xboard/winboard specific void parse_command() { char inboard[60], ms, basestring[5]; int timeleft2, Mbytes; // if the command is an instruction if(!strcmp(response, "level")) { cin >> mttc >> basestring >> inc; base = atof(basestring)*60; omttc = mttc; timeleft = base; } else if(!strcmp(response, "time")) { cin >> timeleft; timeleft = timeleft/100; } else if(!strcmp(response, "otim")) { cin >> timeleft2; timeleft2 = timeleft2/100; } else if(!strcmp(response, "display")) { display_board = 1; drawboard(); } else if(!strcmp(response, "nodisplay")) { display_board = 0; } else if(!strcmp(response, "force")) { both = 1; } else if(!strcmp(response, "black")) { game_pos.wtm = 0; p_side = 0; both = 0; game_pos.hcode = gen_code(&game_pos); game_pos.check = check(&game_pos, game_pos.wtm); } else if(!strcmp(response, "white")) { game_pos.wtm = 1; p_side = 1; both = 0; game_pos.hcode = gen_code(&game_pos); game_pos.check = check(&game_pos, game_pos.wtm); } else if(!strcmp(response, "go")) { p_side = game_pos.wtm^1; both = 0; analysis_mode = 0; } else if(!strcmp(response, "edit")) { board_edit(); } else if(!strcmp(response, "testsuite")) { test_suite(); } else if(!strcmp(response, "analyze")) { post = 1; learn_bk = 0; analysis_mode = 1; book = 0; both = 1; if(!xboard) cout << "Analysis mode: Enter commands/moves as ready.\n\n"; } else if(!strcmp(response, "exit")) { analysis_mode = 0; } else if(!strcmp(response, "new")) { p_side = 1; if(!analysis_mode) { both = 0; book = 1; learn_bk = 1; } T = 1; mttc = omttc; learn_count = 0; learned = 0; game_over = 0; setboard(i_pos, 'w', 1); timeleft = base; } else if(!strcmp(response, "remove")) { takeback(2); } else if(!strcmp(response, "undo")) { takeback(1); } else if(!strcmp(response, "bk") || !strcmp(response, "book")) { if(book) { book = 0; cout << " Book off\n\n"; } else { book = 1; cout << " Book on\n\n"; } } else if(!strcmp(response, "hint")) { hintflag = 1; } else if(!strcmp(response, "shout")) { shout_book = 1; } else if(!strcmp(response, "post")) { post = 1; } else if(!strcmp(response, "xboard")) { xboard = 1; } else if(!strcmp(response, "build")) { build_book(game_pos); } else if(!strcmp(response, "hash")) { cin >> Mbytes; set_hash_size(Mbytes); cout << " Hash size = " << TAB_SIZE << " entries, " << TAB_SIZE*sizeof(hash_rec) << " bytes\n"; cout << " Pawn size = " << PAWN_SIZE << " entries, " << PAWN_SIZE*sizeof(pawn_rec) << " bytes\n\n"; } else if(!strcmp(response, "name") || !strcmp(response, "sum") || !strcmp(response, "ics")) { ics = 1; if(!xboard) cout << " Search summary is on\n\n"; } else if(!strcmp(response, "ponder")) { if(ponder_flag) { ponder_flag = 0; cout << " Pondering off\n\n"; } else { ponder_flag = 1; cout << " Pondering on\n\n"; } } else if(!strcmp(response, "easy")) // pondering off in xboard/winboard { ponder_flag = 0; } else if(!strcmp(response, "hard")) // pondering on in xboard/winboard { ponder_flag = 1; } else if(!strcmp(response, "list")) { type_moves(); } else if(!strcmp(response, "clist")) { type_capts(); } else if(!strcmp(response, "score")) { init_score(&game_pos, T); cout << "score = " << score_pos(&game_pos) << "\n"; cout << "material = " << game_pos.material << "\n"; } else if(!xboard && !strcmp(response, "help")) { help(); } else if(!strcmp(response, "nopost")) { post = 0; } else if(!strcmp(response, "save")) { save_game(); } else if(!strcmp(response, "quit")) { game_over = 1; count = 0; } else if(!strcmp(response, "setboard")) { cin >> inboard >> ms; mttc = omttc; game_over = 0; setboard(inboard, ms, 0); } // if command is a move else { best = parse_move(game_pos, response); if(best.t) { make_move(); T++; } else cout << "Error(" << response << ")\n"; } } // Function to run a test suite. The following variables are // designed to work with the search_display function to determine // when the best move was first found and held on to. int soltime, bmcount, tsuite = 0; move bmoves[10]; void test_suite() { char testpos[60], ms, bookm[10], h1[4], h2, h3[2], h4[7], id[12]; char reply = 'n', testfile[] = "testsuit.txt", resfile[] = "results1.txt"; char mstring[10]; int testtime = 180, cst[4], inter = 0, correct = 0, total = 0; int total_time_sq = 0; bmcount = 0; tsuite = 1; int bmexit; cout << "\nEnter file name for test suite in EPD format: "; cin >> testfile; cout << "\nEnter file name for test results: "; cin >> resfile; cout << "\nInteractive run? (y/n): "; cin >> reply; if (reply == 'y') inter = 1; else { cout << "\nEnter search time per move: "; cin >> testtime; } ifstream infile(testfile); ofstream outfile(resfile); if (!(infile)) { cout << "\nUnable to open file. "; return; } if (!(outfile)) { cout << "\nUnable to open results file. "; return; } do { soltime = -1; if (reply != 's') { for(int j = 0; j < 4; j++) { h1[j] = '*'; cst[j] = 0; } infile >> testpos >> ms >> h1 >> h2 >> h3; bmcount = 0; setboard(testpos, ms, 0); do { infile >> bookm; bmexit = 0; for(int d = 0; d < 10; d++) { if(bookm[d] == '\0') break; if(bookm[d] == ';') { bookm[d] = '\0'; bmexit = 1; break; } } bmoves[bmcount] = parse_move(game_pos, bookm); bmcount++; } while(!bmexit); infile >> h4; infile >> id; if(testpos[0] == '*') break; for(int i = 0; i < 4; i++) { switch (h1[i]) { case 'K': game_pos.castle = game_pos.castle^1; break; case 'Q': game_pos.castle = game_pos.castle^2; break; case 'k': game_pos.castle = game_pos.castle^4; break; case 'q': game_pos.castle = game_pos.castle^8; break; } } if(inter) drawboard(); else cout << "\n"; if (ms == 'w') { cout << "\nWhite to Move"; } else { cout << "\nBlack to Move"; } cout << " Book Move: " << bookm << "\n "; cout << " Test Position: " << id << "\b "; if (inter) { cout << "\n\nPress 's' to search, 'n' for the next position, 'q' to exit: "; cin >> reply; if(reply == 'n') continue; if(reply == 'q') break; cout << "Please enter a search time (in seconds): "; cin >> testtime; } } if(!inter) cout << "\n"; best = search(game_pos, testtime, 1); for(int e = 0; e < bmcount; e++) { if(best.t == bmoves[e].t) { correct++; if(soltime < 0) soltime = 0; break; } } total++; print_move(game_pos, best, mstring); print_move(game_pos, bmoves[0], bookm); cout << "\nSearched Move: " << mstring << "\n"; cout << "Right = " << correct << "/" << total; cout << " Stime = " << soltime; cout.flush(); if(soltime > -1) total_time_sq += soltime*soltime; if(correct) { cout << " = " << setprecision(3) << float(total_time_sq)/float(correct); } outfile << "\n" << id << " Smove: " << mstring; outfile << " Stime = " << soltime; outfile << " Right = " << correct << "/" << total; if(correct) { outfile << " = " << setprecision(3) << float(total_time_sq)/float(correct); } if (inter) { cout << "\n\nPress 's' to search again, 'n' for the next position, 'q' to exit: "; cin >> reply; } } while (reply != 'q'); outfile.close(); infile.close(); if(testpos[0] == '*') cout << "\nNo more test positions.\n"; setboard(testpos, ms, 0); tsuite = 0; return; } // Save game function to save the game to a text file void save_game() { int TURN; TURN = T; char gname[] = "lastgame.gam"; char resp, mstring[10]; char Event[30], White[30], Black[30], Date[30], result[30]; cout << "\nFile Name : "; cin >> gname; cout << "Custom Header? (y/n): "; cin >> resp; if(resp == 'y' || resp == 'Y') { cout << "Event: "; cin >> Event; cout << "Date: "; cin >> Date; cout << "White: "; cin >> White; cout << "Black: "; cin >> Black; } else { strcpy(Event, "Chess Match"); strcpy(Date, "??.??.????"); if (p_side) { strcpy(White, "Human"); strcpy(Black, "EXchess"); } else { strcpy(White, "EXchess"); strcpy(Black, "Human"); } } ofstream outfile(gname); outfile << "[Event: " << Event << " ]"; outfile << "\n[Date: " << Date << " ]"; outfile << "\n[White: " << White << " ]"; outfile << "\n[Black: " << Black << " ]"; // set the result string switch (check_mate(&game_pos)) { case 0: if(game_pos.fifty >= 100) { strcpy(result, " 1/2-1/2 {50 moves}"); } else strcpy(result, " adjourned"); break; case 1: if(!game_pos.wtm) strcpy(result, " 1-0 {White Mates}"); else strcpy(result, " 0-1 {Black Mates}"); break; case 2: strcpy(result, " 1/2-1/2 {Stalemate}"); } outfile << "\n[Result: " << result << " ]\n\n"; // set the board up from the starting position setboard(i_pos, 'w', 1); // play through the game and record the moves in a file for(int i = 1; i < TURN; i++) { print_move(game_pos, game_history[i-1], mstring); if (game_pos.wtm) outfile << (ceil(i/2) + 1) << ". " << mstring; else outfile << mstring; outfile << " "; if(!(T%8)) outfile << "\n"; exec_move(&game_pos, game_history[i-1], 0); T++; } outfile << result; } // Function returns a 1 if a pondering session should be interrupted int inter() { if(!ponder && !analysis_mode && !xboard) return 0; if(cin.rdbuf() -> in_avail() > 1) return 1; #if UNIX FD_ZERO(&read_fds); FD_SET(0,&read_fds); timeout.tv_sec = timeout.tv_usec = 0; select(1,&read_fds,NULL,NULL,&timeout); if((ponder || analysis_mode) && FD_ISSET(0,&read_fds)) return 1; else return 0; #else static int init = 0, pipe; static HANDLE inh; DWORD dw; if(xboard) { // winboard interrupt code taken from crafty if (!init) { init = 1; inh = GetStdHandle(STD_INPUT_HANDLE); pipe = !GetConsoleMode(inh, &dw); if (!pipe) { SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT|ENABLE_WINDOW_INPUT)); FlushConsoleInputBuffer(inh); FlushConsoleInputBuffer(inh); } } if(pipe) { if(!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL)) return 1; return dw; } else { GetNumberOfConsoleInputEvents(inh, &dw); return dw <= 1 ? 0 : dw; } } if(kbhit()) return 1; else return 0; #endif } /* Function to write search output */ // very simple and self-explanatory void search_display(int score, int start_time, int node_count, int max_ply) { char outstring[40], mstring[10]; position p = game_pos; if(ponder) exec_move(&p, ponder_move, 0); if(!xboard) { if(fail == 1) { cout << " " << max_ply << ". ++ "; } if(fail == -1) { cout << " " << max_ply << ". -- \n"; return; } if(score < MATE/2 && score > -MATE/2) { sprintf(outstring, " %2i. %5i ", max_ply, score); } else if (score >= MATE/2) { sprintf(outstring, " %2i. MATE+ ", max_ply); } else { sprintf(outstring, " %2i. MATE- ", max_ply); } if(!fail) cout << outstring; sprintf(outstring, " %4i %8d ", time(NULL) - start_time, node_count); cout << outstring; } else { if (fail == 1) {cout << "++\n"; return; } if (fail == -1) {cout << "--\n"; return; } sprintf(outstring, " %2i %5i ", max_ply, score); cout << outstring; sprintf(outstring, "%7i %6d ", (time(NULL) - start_time)*100, node_count); cout << outstring; } int j = 0; if(!p.wtm && pc[0][0].t) { cout << " 1. ..."; j++; } for (int i = 0; j < 24; i++, j++) { if (!(pc[0][i].t)) break; print_move(p, pc[0][i], mstring); if(!exec_move(&p,pc[0][i],0)) break; if((j == 8 || j == 16) && !xboard) cout << "\n "; if(!(j&1)) cout << " " << (j/2 + 1) << "."; cout << " " << mstring; } cout << "\n"; cout.flush(); if(tsuite) { int correct = 0; for(int e = 0; e < bmcount; e++) { if(pc[0][0].t == bmoves[e].t) { correct = 1; break; } } if(!correct) soltime = -1; if(correct && soltime == -1) soltime = time(NULL) - start_time; } }