xboard2uci.c

   1
   2 // xboard2uci.c
   3
   4 // includes
   5
   6 #include <errno.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <time.h>
  11
  12 #include "board.h"
  13 #include "book.h"
  14 #include "colour.h"
  15 #include "engine.h"
  16 #include "fen.h"
  17 #include "game.h"
  18 #include "gui.h"
  19 #include "line.h"
  20 #include "main.h"
  21 #include "move.h"
  22 #include "move_do.h"
  23 #include "move_legal.h"
  24 #include "move_gen.h"
  25 #include "option.h"
  26 #include "parse.h"
  27 #include "san.h"
  28 #include "uci.h"
  29 #include "uci2uci.h"
  30 #include "util.h"
  31 #include "xboard2uci.h"
  32
  33 // defines
  34
  35 #define StringSize 4096
  36
  37 // constants
  38
  39 static const bool UseDebug = FALSE;
  40 static const bool DelayPong = FALSE;
  41
  42 // types
  43
  44 typedef struct {
  45    int state;
  46    bool computer[ColourNb];
  47    bool playedAllMoves[ColourNb];
  48    int exp_move;
  49    int hint_move;
  50    int resign_nb;
  51    my_timer_t timer[1];
  52 } state_t;
  53
  54 typedef struct {
  55     bool has_feature_memory;
  56     bool has_feature_smp;
  57     bool has_feature_egt_nalimov;
  58     bool has_feature_egt_gaviota;
  59     bool has_feature_egt_syzygy;
  60     bool analyse;
  61     bool computer;
  62     const char * name;
  63     bool ics;
  64     bool new_hack; // "new" is a C++ keyword
  65     bool ponder;
  66     int ping;
  67     bool post;
  68     int proto_ver;
  69     bool result;
  70
  71     int mps;
  72     double base;
  73     double inc;
  74
  75     bool time_limit;
  76     double time_max;
  77
  78     bool depth_limit;
  79     int depth_max;
  80
  81     double my_time;
  82     double opp_time;
  83
  84     int node_rate;
  85 } xb_t;
  86
  87 typedef enum { WAIT, THINK, PONDER, ANALYSE } dummy_state_t;
  88
  89 // variables
  90
  91 static state_t State[1];
  92 static xb_t XB[1];
  93
  94 // prototypes
  95
  96 static void comp_move      (int move);
  97 static void move_step      (int move);
  98 static void board_update   ();
  99
 100 static void mess           ();
 101 static void no_mess        (int move);
 102
 103 static void search_update  ();
 104 static void search_clear   ();
 105 static void update_remaining_time();
 106 static int  report_best_score();
 107 static bool kibitz_throttle (bool searching);
 108 static void start_protected_command();
 109 static void end_protected_command();
 110
 111 static bool active         ();
 112 static bool ponder         ();
 113 static bool ponder_ok      (int ponder_move);
 114
 115 static void stop_search    ();
 116
 117 static void send_board     (int extra_move);
 118 static void send_pv        ();
 119 static void send_info      ();
 120
 121 static void send_xboard_options ();
 122
 123 static void learn          (int result);
 124
 125
 126 // functions
 127
 128 // xboard2uci_init()
 129
 130 void xboard2uci_init() {
 131    // init
 132
 133    game_clear(Game);
 134
 135    // state
 136
 137    State->state = WAIT;
 138
 139    State->computer[White] = FALSE;
 140    State->computer[Black] = TRUE;
 141
 142    State->exp_move = MoveNone;
 143    State->hint_move = MoveNone;
 144    State->resign_nb = 0;
 145    my_timer_reset(State->timer);
 146
 147    // yes there are engines that do not have the "Hash" option....
 148    XB->has_feature_memory= (option_find(Uci->option,"Hash")!=NULL);
 149    XB->has_feature_smp = (uci_thread_option(Uci)!=NULL);
 150    // TODO: support for other types of table bases
 151    // This is a quick hack.
 152    XB->has_feature_egt_nalimov = (option_find(Uci->option,"NalimovPath")!=NULL);
 153    XB->has_feature_egt_gaviota = (option_find(Uci->option,"GaviotaTbPath")!=NULL);
 154    XB->has_feature_egt_syzygy  = (option_find(Uci->option,"SyzygyPath")!=NULL);
 155    XB->analyse = FALSE;
 156    XB->computer = FALSE;
 157    XB->name = NULL;
 158    my_string_set(&XB->name,"<empty>");
 159    XB->ics = FALSE;
 160    XB->new_hack = TRUE;
 161    XB->ping = -1;
 162    XB->ponder = FALSE;
 163    XB->post = FALSE;
 164    XB->proto_ver = 1;
 165    XB->result = FALSE;
 166
 167    XB->mps = 0;
 168    XB->base = 300.0;
 169    XB->inc = 0.0;
 170
 171    XB->time_limit = FALSE;
 172    XB->time_max = 5.0;
 173
 174    XB->depth_limit = FALSE;
 175    XB->depth_max = 127;
 176
 177    XB->my_time = 300.0;
 178    XB->opp_time = 300.0;
 179
 180    XB->node_rate = -1;
 181 }
 182
 183
 184 static list_t move_list[1];
 185
 186 // xboard2uci_gui_step()
 187
 188 void xboard2uci_gui_step(char string[]) {
 189
 190         int move;
 191         char move_string[256];
 192         board_t board[1];
 193
 194                 if (FALSE) {
 195
 196                 } else if (match(string,"accepted *")) {
 197
 198                         // ignore
 199
 200                 } else if (match(string,"analyze")) {
 201
 202                         State->computer[White] = FALSE;
 203                         State->computer[Black] = FALSE;
 204
 205                         XB->analyse = TRUE;
 206                         XB->new_hack = FALSE;
 207                         ASSERT(!XB->result);
 208                         XB->result = FALSE;
 209
 210                         mess();
 211
 212                 } else if (match(string,"bk")) {
 213
 214                         if (option_get_bool(Option,"Book")) {
 215                                 game_get_board(Game,board);
 216                                 book_disp(board);
 217                         } else { // [HGM] without book, print all legal moves
 218                                 int i, gen=!list_size(move_list);
 219                                 game_get_board(Game,board);
 220                                 if(gen) gen_legal_moves(move_list,board);
 221                                 for(i=0; i<list_size(move_list); i++){
 222                                         if(gen) move_list->value[i] = 0;
 223                                         move_to_san(move_list->move[i],board,move_string,256);
 224                                         printf(" %s%6s\n", move_list->value[i]? "* " : "", move_string);
 225                                 }
 226                                 // this is necessary by the xboard protocol
 227                                 printf("\n");
 228                         }
 229
 230                 } else if (match(string,"exclude *") || match(string,"option Polyglot exclude move=*")) { // [HGM]
 231
 232                                 int i, all = !strcmp(Star[0], "all"), change=FALSE, cnt=0;
 233                                 game_get_board(Game,board);
 234                                 if(!list_size(move_list)) {
 235                                         gen_legal_moves(move_list,board);
 236                                         for(i=0; i<list_size(move_list); i++){
 237                                                 move_list->value[i] = 0;
 238                                         }
 239                                 }
 240                                 move = move_from_san(Star[0],board);
 241
 242                                 for(i=0; i<list_size(move_list); i++){
 243                                         if(all || move_list->move[i] == move)
 244                                                 change |= !move_list->value[i], move_list->value[i] = 1;
 245                                         cnt += !move_list->value[i];
 246                                 }
 247                                 if(change && cnt) mess(); // do not relay to engine if no change or no moves left
 248
 249                 } else if (match(string,"include *")) { // [HGM]
 250
 251                         int i, all = !strcmp(Star[0], "all"), change = FALSE;
 252                         game_get_board(Game,board);
 253                         move = move_from_san(Star[0],board);
 254
 255                         for(i=0; i<list_size(move_list); i++){
 256                                 if(all || move_list->move[i] == move)
 257                                         change |= move_list->value[i], move_list->value[i] = 0;
 258                         }
 259                         if(change) mess();
 260
 261                 } else if (match(string,"black")) {
 262
 263                         if (colour_is_black(game_turn(Game))) {
 264
 265                                 State->computer[White] = TRUE;
 266                                 State->computer[Black] = FALSE;
 267
 268                                 XB->new_hack = TRUE;
 269                                 XB->result = FALSE;
 270
 271                                 mess();
 272                         }
 273
 274                 } else if (match(string,"computer")) {
 275
 276                         XB->computer = TRUE;
 277
 278                 } else if (match(string,"draw")) {
 279                         if(option_find(Uci->option,"UCI_DrawOffers")){
 280                             my_log("POLYGLOT draw from XB received");
 281                                 uci_send_option(Uci,"DrawOffer","%s","draw");}
 282                         else if (option_get_bool(Option,"HandleDraws") && Uci->root_move_nb > 20) { // [HGM] PG draw handling
 283                             my_log("POLYGLOT draw from XB received");
 284                             if (Uci->best_score <= -option_get_int(Option,"ContemptScore"))
 285                                 gui_send(GUI,"offer draw");}
 286                 } else if (match(string,"easy")) {
 287
 288                         XB->ponder = FALSE;
 289
 290                         mess();
 291
 292                 } else if (match(string,"edit")) {
 293
 294                         // refuse
 295
 296                         gui_send(GUI,"Error (unknown command): %s",string);
 297
 298                 } else if (match(string,"exit")) {
 299
 300                         State->computer[White] = FALSE;
 301                         State->computer[Black] = FALSE;
 302
 303                         XB->analyse = FALSE;
 304
 305                         mess();
 306
 307                 } else if (match(string,"force")) {
 308
 309                         State->computer[White] = FALSE;
 310                         State->computer[Black] = FALSE;
 311
 312                         mess();
 313
 314                 } else if (match(string,"go")) {
 315
 316                         State->computer[game_turn(Game)] = TRUE;
 317                         State->computer[colour_opp(game_turn(Game))] = FALSE;
 318
 319                         XB->new_hack = FALSE;
 320                         ASSERT(!XB->result);
 321                         XB->result = FALSE;
 322
 323                         mess();
 324
 325                 } else if (match(string,"hard")) {
 326
 327                         XB->ponder = TRUE;
 328
 329                         mess();
 330
 331                 } else if (match(string,"hint")) {
 332
 333                         move=MoveNone;
 334                         game_get_board(Game,board);
 335                         if (option_get_bool(Option,"Book")) {
 336
 337                                 move = book_move(board,FALSE);
 338                         }
 339                         if(move==MoveNone && State->hint_move!=MoveNone){
 340                             move=State->hint_move;
 341
 342                         }
 343                         if (move != MoveNone && move_is_legal(move,board)) {
 344                             move_to_san(move,board,move_string,256);
 345                             gui_send(GUI,"Hint: %s",move_string);
 346                         }
 347
 348                 } else if (match(string,"ics *")) {
 349
 350                         XB->ics = TRUE;
 351
 352                 } else if (match(string,"level * *:* *")) {
 353
 354                         XB->mps  = atoi(Star[0]);
 355                         XB->base = ((double)atoi(Star[1])) * 60.0 + ((double)atoi(Star[2]));
 356                         XB->inc  = ((double)atoi(Star[3]));
 357
 358                 } else if (match(string,"level * * *")) {
 359
 360                         XB->mps  = atoi(Star[0]);
 361                         XB->base = ((double)atoi(Star[1])) * 60.0;
 362                         XB->inc  = ((double)atoi(Star[2]));
 363
 364                 } else if (match(string,"name *")) {
 365
 366                         my_string_set(&XB->name,Star[0]);
 367
 368                 } else if (match(string,"new")) {
 369
 370                     uci_send_isready_sync(Uci);
 371                         my_log("POLYGLOT NEW GAME\n");
 372
 373                         option_set(Option,"Chess960","false");
 374
 375                         game_clear(Game);
 376
 377                         move_list->size = 0; // [HGM] clear all exclude moves
 378
 379                         if (XB->analyse) {
 380                                 State->computer[White] = FALSE;
 381                                 State->computer[Black] = FALSE;
 382                         } else {
 383                                 State->computer[White] = FALSE;
 384                                 State->computer[Black] = TRUE;
 385                                 State->playedAllMoves[White] = TRUE; // [HGM]
 386                                 State->playedAllMoves[Black] = TRUE;
 387                         }
 388
 389                         XB->new_hack = TRUE;
 390                         XB->result = FALSE;
 391
 392                         XB->depth_limit = FALSE;
 393             XB->node_rate=-1;
 394
 395                         XB->computer = FALSE;
 396                         my_string_set(&XB->name,"<empty>");
 397
 398                         board_update();
 399                         mess();
 400
 401                         uci_send_ucinewgame(Uci);
 402
 403                 } else if (match(string,"nopost")) {
 404
 405                         XB->post = FALSE;
 406
 407                 } else if (match(string,"otim *")) {
 408
 409                         XB->opp_time = ((double)atoi(Star[0])) / 100.0;
 410                         if (XB->opp_time < 0.0) XB->opp_time = 0.0;
 411
 412                 } else if (match(string,"pause")) {
 413
 414                         // refuse
 415
 416                         gui_send(GUI,"Error (unknown command): %s",string);
 417
 418                 } else if (match(string,"ping *")) {
 419
 420                         // HACK; TODO: answer only after an engine move
 421
 422                         if (DelayPong) {
 423                                 if (XB->ping >= 0) gui_send(GUI,"pong %d",XB->ping); // HACK: get rid of old ping
 424                                 XB->ping = atoi(Star[0]);
 425                                 uci_send_isready_sync(Uci);
 426                         } else {
 427                                 ASSERT(XB->ping==-1);
 428                                 gui_send(GUI,"pong %s",Star[0]);
 429                         }
 430         } else if (match(string,"nps *")) {
 431
 432                 // fake WB play-by-nodes mode
 433             XB->node_rate = atoi(Star[0]);
 434                 } else if (match(string,"playother")) {
 435
 436                         State->computer[game_turn(Game)] = FALSE;
 437                         State->computer[colour_opp(game_turn(Game))] = TRUE;
 438
 439                         XB->new_hack = FALSE;
 440                         ASSERT(!XB->result);
 441                         XB->result = FALSE;
 442
 443                         mess();
 444
 445                 } else if (match(string,"post")) {
 446
 447                         XB->post = TRUE;
 448
 449                 } else if (match(string,"protover *")) {
 450             XB->proto_ver = atoi(Star[0]);
 451             ASSERT(XB->proto_ver>=2);
 452             send_xboard_options();
 453
 454                 } else if (match(string,"quit")) {
 455                         my_log("POLYGLOT *** \"quit\" from GUI ***\n");
 456                         quit();
 457                 } else if (match(string,"random")) {
 458
 459                         // ignore
 460
 461                 } else if (match(string,"rating * *")) {
 462
 463                         // ignore
 464
 465                 } else if (match(string,"remove")) {
 466
 467                         if (game_pos(Game) >= 2) {
 468
 469                                 game_goto(Game,game_pos(Game)-2);
 470
 471                                 ASSERT(!XB->new_hack);
 472                                 XB->new_hack = FALSE; // HACK?
 473                                 XB->result = FALSE;
 474
 475                                 board_update();
 476                                 mess();
 477                         }
 478
 479                 } else if (match(string,"rejected *")) {
 480
 481                         // ignore
 482
 483                 } else if (match(string,"reset")) { // protover 3?
 484
 485                         // refuse
 486
 487                         gui_send(GUI,"Error (unknown command): %s",string);
 488
 489                 } else if (FALSE
 490                         || match(string,"result * {*}")
 491                         || match(string,"result * {* }")
 492                         || match(string,"result * { *}")
 493                         || match(string,"result * { * }")) {
 494
 495                                 my_log("POLYGLOT GAME END\n");
 496
 497                                 XB->result = TRUE;
 498
 499                                 mess();
 500
 501                                 // book learning
 502
 503                                 if (option_get_bool(Option,"Book") &&
 504                     option_get_bool(Option,"BookLearn")) {
 505
 506                                         if (FALSE) {
 507                                         } else if (my_string_equal(Star[0],"1-0")) {
 508                                                 learn(+1);
 509                                         } else if (my_string_equal(Star[0],"0-1")) {
 510                                                 learn(-1);
 511                                         } else if (my_string_equal(Star[0],"1/2-1/2")) {
 512                                                 learn(0);
 513                                         }
 514                                 }
 515                 } else if (match(string,"resume")) {
 516
 517                         // refuse
 518
 519                         gui_send(GUI,"Error (unknown command): %s",string);
 520
 521         } else if (match(string,"option *=*")   ||
 522                    match(string,"option * =*") ||
 523                    match(string,"option *= *") ||
 524                    match(string,"option * = *")
 525                    ){
 526             char *name=Star[0];
 527             char *value=Star[1];
 528             if(match(name, "Polyglot *")){
 529                 char *pg_name=Star[0];
 530                 polyglot_set_option(pg_name,value);
 531             }else{
 532                 option_t *opt=option_find(Uci->option,name);
 533                 if(opt){
 534                     if(my_string_case_equal(opt->type,"check")){
 535                        value=my_string_equal(value,"1")?"true":"false";
 536                     }
 537                     start_protected_command();
 538                     uci_send_option(Uci, name, "%s", value);
 539                     end_protected_command();
 540                 }else{
 541                     gui_send(GUI,"Error (unknown option): %s",name);
 542                 }
 543             }
 544         } else if (match(string,"option *")){
 545             char *name=Star[0];
 546              if(match(name, "Polyglot *")){
 547                 char *pg_name=Star[0];
 548                 polyglot_set_option(pg_name,"<empty>");
 549              }else{
 550                start_protected_command();
 551                 // value is ignored
 552                if(!uci_send_option(Uci, name, "%s", "<empty>")){
 553                  gui_send(GUI,"Error (unknown option): %s",name);
 554                };
 555                end_protected_command();
 556              }
 557         } else if (XB->has_feature_smp && match(string,"cores *")){
 558                 int cores=atoi(Star[0]);
 559                 if(cores>=1){
 560                     // updating the number of cores
 561                     my_log("POLYGLOT setting the number of cores to %d\n",cores);
 562                     start_protected_command();
 563                     uci_set_threads(Uci,cores);
 564                     end_protected_command();
 565                 } else{
 566                    // refuse
 567                     gui_send(GUI,"Error (unknown command): %s",string);
 568                 }
 569         } else if (match(string,"egtpath * *")){
 570                 char *type=Star[0];
 571                 char *path=Star[1];
 572                 if(my_string_empty(path)){
 573                     // refuse
 574                     gui_send(GUI,"Error (unknown command): %s",string);
 575                 }else{
 576                     if(my_string_case_equal(type,"nalimov") && XB->has_feature_egt_nalimov){
 577                         // updating NalimovPath
 578                         my_log("POLYGLOT setting the Nalimov path to %s\n",path);
 579                         start_protected_command();
 580                         uci_send_option(Uci,"NalimovPath","%s",path);
 581                         end_protected_command();
 582                     }else if(my_string_case_equal(type,"gaviota") && XB->has_feature_egt_gaviota){
 583                         // updating GaviotaPath
 584                         my_log("POLYGLOT setting the Gaviota path to %s\n",path);
 585                         start_protected_command();
 586                         uci_send_option(Uci,"GaviotaTbPath","%s",path);
 587                         end_protected_command();
 588                     }else if(my_string_case_equal(type,"syzygy") && XB->has_feature_egt_syzygy){
 589                         // updating SyzygyPath
 590                         my_log("POLYGLOT setting the Syzygy path to %s\n",path);
 591                         start_protected_command();
 592                         uci_send_option(Uci,"SyzygyPath","%s",path);
 593                         end_protected_command();
 594                     }else{
 595                         // refuse
 596                         gui_send(GUI,"Error (unsupported table base format): %s",string);
 597                     }
 598                 }
 599         } else if (XB->has_feature_memory && match(string,"memory *")){
 600             int memory = atoi(Star[0]);
 601             int egt_cache;
 602             int real_memory;
 603             if(memory>=1){
 604                 // updating the available memory
 605                 option_t *opt;
 606                 int h;
 607                 my_log("POLYGLOT setting the amount of memory to %dMb\n",memory);
 608                 egt_cache=0;
 609                 if(XB->has_feature_egt_nalimov && (opt=option_find(Uci->option,"NalimovCache"))){
 610                     h=atoi(opt->value);
 611                     if(h>egt_cache)egt_cache=h;
 612                 }
 613                 if(XB->has_feature_egt_gaviota &&
 614                          (opt=option_find(Uci->option,"GaviotaTbCache"))){
 615                     h=atoi(opt->value);
 616                     if(h>egt_cache)egt_cache=h;
 617                 }
 618                 my_log("POLYGLOT EGTB Cache is %dMb\n",egt_cache);
 619                 real_memory=memory-egt_cache;
 620                 opt=option_find(Uci->option,"Hash");
 621                 if(opt && real_memory > atoi(opt->max)) real_memory = atoi(opt->max); // [HGM] top off
 622                 if(real_memory>0){
 623                     start_protected_command();
 624                     uci_send_option(Uci,"Hash", "%d", real_memory);
 625                     end_protected_command();
 626                 }
 627             }else{
 628                 // refuse
 629                 gui_send(GUI,"Error (unknown command): %s",string);
 630             }
 631
 632                 } else if (match(string,"sd *")) {
 633
 634                         XB->depth_limit = TRUE;
 635                         XB->depth_max = atoi(Star[0]);
 636
 637                 } else if (match(string,"setboard *")) {
 638
 639                         my_log("POLYGLOT FEN %s\n",Star[0]);
 640
 641                         if (!game_init(Game,Star[0])) my_fatal("xboard_step(): bad FEN \"%s\"\n",Star[0]);
 642
 643                         move_list->size = 0; // [HGM] clear all exclude moves
 644
 645                         State->computer[White] = FALSE;
 646                         State->computer[Black] = FALSE;
 647
 648                         XB->new_hack = TRUE; // HACK?
 649                         XB->result = FALSE;
 650
 651                         board_update();
 652                         mess();
 653
 654                 } else if (match(string,"st *")) {
 655
 656                         XB->time_limit = TRUE;
 657                         XB->time_max = ((double)atoi(Star[0]));
 658
 659                 } else if (match(string,"time *")) {
 660
 661                         XB->my_time = ((double)atoi(Star[0])) / 100.0;
 662                         if (XB->my_time < 0.0) XB->my_time = 0.0;
 663
 664                 } else if (match(string,"undo")) {
 665
 666                         move_list->size = 0; // [HGM] clear all exclude moves
 667
 668                         if (game_pos(Game) >= 1) {
 669
 670                                 game_goto(Game,game_pos(Game)-1);
 671
 672                                 ASSERT(!XB->new_hack);
 673                                 XB->new_hack = FALSE; // HACK?
 674                                 XB->result = FALSE;
 675
 676                                 board_update();
 677                                 mess();
 678                         }
 679
 680                 } else if (match(string,"usermove *")) {
 681
 682                         move_list->size = 0; // [HGM] clear all exclude moves
 683
 684                         game_get_board(Game,board);
 685                         move = move_from_san(Star[0],board);
 686
 687                         if (move != MoveNone && move_is_legal(move,board)) {
 688
 689                                 XB->new_hack = FALSE;
 690                                 ASSERT(!XB->result);
 691                                 XB->result = FALSE;
 692
 693                                 // [HGM] externally supplied move means we did not fully play the current stm
 694                                 State->playedAllMoves[colour_is_white(game_turn(Game)) ? White : Black] = FALSE;
 695
 696                                 move_step(move);
 697                                 no_mess(move);
 698
 699                         } else {
 700
 701                                 gui_send(GUI,"Illegal move: %s",Star[0]);
 702                         }
 703
 704                 } else if (match(string,"variant *")) {
 705
 706                         if (my_string_equal(Star[0],"fischerandom")) {
 707                                 option_set(Option,"Chess960","true");
 708                         } else {
 709                                 option_set(Option,"Chess960","false");
 710                         }
 711
 712                 } else if (match(string,"white")) {
 713
 714                         if (colour_is_white(game_turn(Game))) {
 715
 716                                 State->computer[White] = FALSE;
 717                                 State->computer[Black] = TRUE;
 718
 719                                 XB->new_hack = TRUE;
 720                                 XB->result = FALSE;
 721
 722                                 mess();
 723                         }
 724
 725                 } else if (match(string,"xboard")) {
 726
 727                         // ignore
 728
 729                 } else if (match(string,".")) { // analyse info
 730
 731                         if (State->state == ANALYSE) {
 732                                 int depth=Uci->best_depth;//HACK: don't clear engine-output window...
 733
 734                                 ASSERT(Uci->searching);
 735                                 ASSERT(Uci->pending_nb>=1);
 736
 737                                 if (Uci->root_move != MoveNone && move_is_legal(Uci->root_move,Uci->board)) {
 738                                         move_to_san(Uci->root_move,Uci->board,move_string,256);
 739                                         gui_send(GUI,"stat01: %.0f "S64_FORMAT" %d %d %d %s",Uci->time*100.0,Uci->node_nb,/*Uci->*/depth,Uci->root_move_nb-(Uci->root_move_pos+1),Uci->root_move_nb,move_string);
 740                                 } else {
 741                                         gui_send(GUI,"stat01: %.0f "S64_FORMAT" %d %d %d",Uci->time*100.0,Uci->node_nb,/*Uci->*/depth,0,0); // HACK
 742                                 }
 743                         }
 744
 745                 } else if (match(string,"?")) { // move now
 746
 747                         if (State->state == THINK) {
 748
 749                                 ASSERT(Uci->searching);
 750                                 ASSERT(Uci->pending_nb>=1);
 751
 752                                 // HACK: just send "stop" to the engine
 753
 754                                 if (Uci->searching) {
 755                                         my_log("POLYGLOT STOP SEARCH\n");
 756                                         engine_send(Engine,"stop");
 757                                 }
 758                         }
 759
 760                 } else { // unknown command, maybe a move?
 761
 762                         game_get_board(Game,board);
 763                         move = move_from_san(string,board);
 764
 765                         if (move != MoveNone && move_is_legal(move,board)) {
 766
 767                                 XB->new_hack = FALSE;
 768                                 ASSERT(!XB->result);
 769                                 XB->result = FALSE;
 770
 771                                 move_step(move);
 772                                 no_mess(move);
 773
 774                         } else if (move != MoveNone) {
 775
 776                                 gui_send(GUI,"Illegal move: %s",string);
 777
 778                         } else {
 779
 780                                 gui_send(GUI,"Error (unknown command): %s",string);
 781                         }
 782                 }
 783         return;
 784 }
 785
 786 // xboard2uci_engine_step()
 787
 788 void xboard2uci_engine_step(char string[]) {
 789
 790         int event;
 791     board_t board[1];
 792                 event = uci_parse(Uci,string);
 793
 794                 // react to events
 795
 796                 if ((event & EVENT_READY) != 0) {
 797
 798                         // the engine is now ready
 799
 800                         if (!Uci->ready) {
 801                                 Uci->ready = TRUE;
 802                     //  if (XB->proto_ver >= 2) xboard_send(XBoard,"feature done=1");
 803                         }
 804
 805                         if (!DelayPong && XB->ping >= 0) {
 806                                 gui_send(GUI,"pong %d",XB->ping);
 807                                 XB->ping = -1;
 808                         }
 809                 }
 810
 811                 if ((event & EVENT_MOVE) != 0 && State->state == THINK) {
 812
 813                         // the engine is playing a move
 814
 815                         // MEGA HACK: estimate remaining time because XBoard won't send it!
 816
 817                         my_timer_stop(State->timer);
 818
 819                         XB->my_time -= my_timer_elapsed_real(State->timer);
 820                         XB->my_time += XB->inc;
 821                         if (XB->mps != 0 && (game_move_nb(Game) + 1) % XB->mps == 0) XB->my_time += XB->base;
 822
 823                         if (XB->my_time < 0.0) XB->my_time = 0.0;
 824
 825                         // make sure to remember the ponder move
 826
 827                         State->hint_move=Uci->ponder_move;
 828
 829                         // play the engine move
 830
 831                         comp_move(Uci->best_move);
 832
 833                 }
 834
 835                 if ((event & EVENT_PV) != 0) {
 836
 837                         // the engine has sent a new PV
 838
 839                         send_pv();
 840                 }
 841                 if ((event & EVENT_INFO) != 0) {
 842
 843                         // the engine has sent info
 844
 845                         send_info();
 846                 }
 847                 if((event & (EVENT_DRAW|EVENT_RESIGN))!=0){
 848                         my_log("POYGLOT draw offer/resign from engine\n");
 849                         if(option_find(Uci->option,"UCI_DrawOffers")){
 850                                 if(event & EVENT_DRAW)
 851                                         gui_send(GUI,"offer draw");
 852                                 else
 853                                         gui_send(GUI,"resign");
 854                         }
 855                 }
 856                 if(((event & EVENT_ILLEGAL_MOVE)!=0) && (State->state == THINK)){
 857                     game_get_board(Game,board);
 858                     if(board->turn==White){
 859                         gui_send(GUI,"0-1 {polyglot: resign"
 860                                  " (illegal engine move by white: %s)}",Uci->bestmove);
 861                     }else{
 862                         gui_send(GUI,"1-0 {polyglot: resign"
 863                                  " (illegal engine move by black: %s)}",Uci->bestmove);
 864                     }
 865                     board_disp(board);
 866                     XB->result = TRUE;
 867                     mess();
 868                 }
 869 }
 870
 871 // format_xboard_option_line
 872
 873 void format_xboard_option_line(char * option_line, option_t *opt){
 874     int j;
 875     char option_string[StringSize];
 876     char *tmp;
 877     strcpy(option_line,"");
 878         // buffer overflow alert
 879     strcat(option_line,"feature option=\"");
 880     if(opt->mode&PG){
 881         strcat(option_line,"Polyglot ");
 882     }
 883     sprintf(option_string,"%s",opt->name);
 884     strcat(option_line,option_string);
 885     sprintf(option_string," -%s",opt->type);
 886     strcat(option_line,option_string);
 887     if(!IS_BUTTON(opt->type) && strcmp(opt->type,"combo")){
 888         if(strcmp(opt->type,"check")){
 889             sprintf(option_string," %s",opt->value);
 890         }else{
 891             sprintf(option_string," %d",
 892                     my_string_case_equal(opt->value,"true")||
 893                     my_string_equal(opt->value,"1")
 894                     ?1:0);
 895         }
 896         strcat(option_line,option_string);
 897     }
 898     if(IS_SPIN(opt->type)){
 899         sprintf(option_string," %s",opt->min);
 900             strcat(option_line,option_string);
 901     }
 902     if(IS_SPIN(opt->type)){
 903         sprintf(option_string," %s",opt->max);
 904         strcat(option_line,option_string);
 905     }
 906     for(j=0;j<opt->var_nb;j++){
 907         if(!strcmp(opt->var[j],opt->value)){
 908             sprintf(option_string," *%s",opt->var[j]);
 909         }else{
 910             sprintf(option_string," %s",opt->var[j]);
 911         }
 912         strcat(option_line,option_string);
 913         if(j!=opt->var_nb-1){
 914             strcat(option_line," ///");
 915         }
 916     }
 917     strcat(option_line,"\"");
 918     if(option_get_bool(Option,"WbWorkArounds") &&
 919        (tmp=strstr(option_line,"Draw"))){
 920         *tmp='d';
 921         my_log("POLYGLOT Decapitalizing \"Draw\" in option \"%s\"\n",
 922                opt->name);
 923     }
 924 }
 925
 926 // disarm() // [HGM] cleanse a string of offending double-quotes
 927
 928 static char*disarm(const char *s){
 929     static char buf[25];
 930     char *p = buf, *q;
 931     strncpy(buf, s, 24);
 932     q = buf + strlen(buf) - 1;
 933     while(*q == '"') *q-- = '\0';          // strip trailing quotes
 934     while(*p == '"') p++;                  // strip leading quotes
 935     while((q = strchr(p, '"'))) *q = '\''; // replace internal quotes
 936     return p;
 937 }
 938
 939 // send_xboard_options()
 940
 941 static void send_xboard_options(){
 942
 943     char egtfeature[StringSize];
 944     int tbs=0;
 945
 946     gui_send(GUI,"feature done=0");
 947
 948     gui_send(GUI,"feature analyze=1");
 949     gui_send(GUI,"feature exclude=1");
 950     gui_send(GUI,"feature colors=0");
 951     gui_send(GUI,"feature draw=1");
 952     gui_send(GUI,"feature ics=1");
 953     gui_send(GUI,"feature myname=\"%s\"",
 954              disarm(option_get_string(Option,"EngineName")));
 955     gui_send(GUI,"feature name=1");
 956     gui_send(GUI,"feature pause=0");
 957     gui_send(GUI,"feature ping=1");
 958     gui_send(GUI,"feature playother=1");
 959     gui_send(GUI,"feature sigint=1");
 960     gui_send(GUI,"feature reuse=1");
 961     gui_send(GUI,"feature san=0");
 962     gui_send(GUI,"feature setboard=1");
 963     gui_send(GUI,"feature sigint=0");
 964     gui_send(GUI,"feature sigterm=0");
 965     gui_send(GUI,"feature time=1");
 966     gui_send(GUI,"feature usermove=1");
 967     gui_send(GUI,"feature nps=1");
 968     if (XB->has_feature_memory){
 969         gui_send(GUI,"feature memory=1");
 970     }else{
 971         gui_send(GUI,"feature memory=0");
 972     }
 973     if (XB->has_feature_smp){
 974         gui_send(GUI,"feature smp=1");
 975     }else{
 976         gui_send(GUI,"feature smp=0");
 977     }
 978     egtfeature[0]='\0';
 979     strncat(egtfeature,"feature egt=\"",StringSize);
 980     if (XB->has_feature_egt_nalimov){
 981         tbs++;
 982         strncat(egtfeature,"nalimov",StringSize-strlen(egtfeature));
 983     }
 984     if (XB->has_feature_egt_gaviota){
 985         if(tbs>0){
 986             strncat(egtfeature,",",StringSize-strlen(egtfeature));
 987         }
 988         tbs++;
 989         strncat(egtfeature,"gaviota",StringSize-strlen(egtfeature));
 990     }
 991     if (XB->has_feature_egt_syzygy){
 992         if(tbs>0){
 993             strncat(egtfeature,",",StringSize-strlen(egtfeature));
 994         }
 995         strncat(egtfeature,"syzygy",StringSize-strlen(egtfeature));
 996     }
 997     strncat(egtfeature,"\"",StringSize-strlen(egtfeature));
 998     egtfeature[StringSize-1]='\0';
 999     gui_send(GUI,egtfeature);
1000
1001     if (option_find(Uci->option,"UCI_Chess960")) {
1002         gui_send(GUI,"feature variants=\"normal,fischerandom\"");
1003     } else {
1004         gui_send(GUI,"feature variants=\"normal\"");
1005     }
1006
1007     xboard2uci_send_options();
1008 }
1009
1010 void xboard2uci_send_options(){
1011   char option_line[StringSize]="";
1012   const char * name;
1013   option_t *opt;
1014
1015   option_start_iter(Uci->option);
1016   while((opt=option_next(Uci->option))){
1017     if(my_string_case_equal(opt->name,"UCI_AnalyseMode")) continue;
1018     if(my_string_case_equal(opt->name,"UCI_Opponent")) continue;
1019     if(my_string_case_equal(opt->name,"UCI_Chess960")) continue;
1020     if(my_string_case_equal(opt->name,"UCI_ShowCurrLine")) continue;
1021     if(my_string_case_equal(opt->name,"UCI_ShowRefutations")) continue;
1022     if(my_string_case_equal(opt->name,"UCI_ShredderbasesPath")) continue;
1023     if(my_string_case_equal(opt->name,"UCI_SetPositionValue")) continue;
1024     if(my_string_case_equal(opt->name,"UCI_DrawOffers")) continue;
1025     if(my_string_case_equal(opt->name,"Ponder")) continue;
1026     if(my_string_case_equal(opt->name,"Hash")) continue;
1027     if(my_string_case_equal(opt->name,"NalimovPath")) continue;
1028     if(my_string_case_equal(opt->name,"GaviotaTbPath")) continue;
1029     if(my_string_case_equal(opt->name,"SyzygyPath")) continue;
1030     if((name=uci_thread_option(Uci))!=NULL &&
1031        my_string_case_equal(opt->name,name)) continue;
1032     format_xboard_option_line(option_line,opt);
1033
1034     gui_send(GUI,"%s",option_line);
1035   }
1036
1037
1038   gui_send(GUI,"feature option=\"Polyglot exclude move -string \"");
1039
1040   option_start_iter(Option);
1041   while((opt=option_next(Option))){
1042     if(opt->mode &XBOARD){
1043       format_xboard_option_line(option_line,opt);
1044       gui_send(GUI,"%s",option_line);
1045     }
1046   }
1047   gui_send(GUI,"feature done=1");
1048
1049 }
1050
1051 // report_best_score()
1052
1053 static int report_best_score(){
1054     if(!option_get_bool(Option,"ScoreWhite") ||
1055        colour_is_white(Uci->board->turn)){
1056         return Uci->best_score;
1057     }else{
1058         return -Uci->best_score;
1059     }
1060 }
1061
1062 // comp_move()
1063
1064 static void comp_move(int move) {
1065
1066    board_t board[1];
1067    char string[256];
1068
1069    ASSERT(move_is_ok(move));
1070
1071    ASSERT(State->state==THINK);
1072    ASSERT(!XB->analyse);
1073
1074    if(option_get_bool(Option,"RepeatPV"))
1075            send_pv(); // to update time and nodes
1076
1077    // send the move
1078
1079    game_get_board(Game,board);
1080
1081    if (move_is_castle(move,board) && option_get_bool(Option,"Chess960")) {
1082       if (!move_to_san(move,board,string,256)) my_fatal("comp_move(): move_to_san() failed\n"); // O-O/O-O-O
1083    } else {
1084       if (!move_to_can(move,board,string,256)) my_fatal("comp_move(): move_to_can() failed\n");
1085    }
1086
1087    gui_send(GUI,"move %s",string);
1088
1089    // resign?
1090
1091    if (option_get_bool(Option,"Resign") && Uci->root_move_nb > 1) {
1092
1093        if (Uci->best_score <= -abs(option_get_int(Option,"ResignScore"))) {
1094
1095          State->resign_nb++;
1096          my_log("POLYGLOT %d move%s with resign score\n",State->resign_nb,(State->resign_nb>1)?"s":"");
1097
1098          if (State->resign_nb >= option_get_int(Option,"ResignMoves")) {
1099             if (!option_get_bool(Option,"QueenNeverResigns") || !board_has_queen(board, board->turn)) { // [HGM] suppress resignig with Queen
1100                 my_log("POLYGLOT *** RESIGN ***\n");
1101                 gui_send(GUI,"resign");
1102             }
1103          }
1104
1105       } else {
1106
1107          if (State->resign_nb > 0) my_log("POLYGLOT resign reset (State->resign_nb=%d)\n",State->resign_nb);
1108          State->resign_nb = 0;
1109       }
1110    }
1111
1112    // play the move
1113
1114    move_step(move);
1115    no_mess(move);
1116 }
1117
1118 // move_step()
1119
1120 static void move_step(int move) {
1121
1122    board_t board[1];
1123    char move_string[256];
1124
1125    ASSERT(move_is_ok(move));
1126
1127    // log
1128
1129    game_get_board(Game,board);
1130
1131    if (move != MoveNone && move_is_legal(move,board)) {
1132
1133       move_to_san(move,board,move_string,256);
1134       my_log("POLYGLOT MOVE %s\n",move_string);
1135
1136    } else {
1137
1138       move_to_can(move,board,move_string,256);
1139       my_log("POLYGLOT ILLEGAL MOVE \"%s\"\n",move_string);
1140       board_disp(board);
1141
1142       my_fatal("move_step(): illegal move \"%s\"\n",move_string);
1143    }
1144
1145    // play the move
1146
1147    game_add_move(Game,move);
1148    board_update();
1149 }
1150
1151 // board_update()
1152
1153 static void board_update() {
1154
1155    // handle game end
1156
1157    ASSERT(!XB->result);
1158
1159    switch (game_status(Game)) {
1160    case PLAYING:
1161       break;
1162    case WHITE_MATES:
1163       gui_send(GUI,"1-0 {White mates}");
1164       break;
1165    case BLACK_MATES:
1166       gui_send(GUI,"0-1 {Black mates}");
1167       break;
1168    case STALEMATE:
1169       gui_send(GUI,"1/2-1/2 {Stalemate}");
1170       break;
1171    case DRAW_MATERIAL:
1172       gui_send(GUI,"1/2-1/2 {Draw by insufficient material}");
1173       break;
1174    case DRAW_FIFTY:
1175       gui_send(GUI,"1/2-1/2 {Draw by fifty-move rule}");
1176       break;
1177    case DRAW_REPETITION:
1178       gui_send(GUI,"1/2-1/2 {Draw by repetition}");
1179       break;
1180    default:
1181       ASSERT(FALSE);
1182       break;
1183    }
1184 }
1185
1186 // mess()
1187
1188 static void mess() {
1189
1190    // clear state variables
1191
1192    State->resign_nb = 0;
1193    State->exp_move = MoveNone;
1194    my_timer_reset(State->timer);
1195
1196    // abort a possible search
1197
1198    stop_search();
1199
1200    // calculate the new state
1201
1202    if (FALSE) {
1203    } else if (!active()) {
1204       State->state = WAIT;
1205       my_log("POLYGLOT WAIT\n");
1206    } else if (XB->analyse) {
1207       State->state = ANALYSE;
1208       my_log("POLYGLOT ANALYSE\n");
1209    } else if (State->computer[game_turn(Game)]) {
1210       State->state = THINK;
1211       my_log("POLYGLOT THINK\n");
1212    } else {
1213       State->state = WAIT;
1214       my_log("POLYGLOT WAIT\n");
1215    }
1216
1217    search_update();
1218 }
1219
1220 // no_mess()
1221
1222 static void no_mess(int move) {
1223
1224    ASSERT(move_is_ok(move));
1225
1226    // just received a move, calculate the new state
1227
1228    if (FALSE) {
1229
1230    } else if (!active()) {
1231
1232       stop_search(); // abort a possible search
1233
1234       State->state = WAIT;
1235       State->exp_move = MoveNone;
1236
1237       my_log("POLYGLOT WAIT\n");
1238
1239    } else if (State->state == WAIT) {
1240
1241       ASSERT(State->computer[game_turn(Game)]);
1242       ASSERT(!State->computer[colour_opp(game_turn(Game))]);
1243       ASSERT(!XB->analyse);
1244
1245       my_log("POLYGLOT WAIT -> THINK\n");
1246
1247       State->state = THINK;
1248       State->exp_move = MoveNone;
1249
1250    } else if (State->state == THINK) {
1251
1252       ASSERT(!State->computer[game_turn(Game)]);
1253       ASSERT(State->computer[colour_opp(game_turn(Game))]);
1254       ASSERT(!XB->analyse);
1255
1256       if (ponder() && ponder_ok(Uci->ponder_move)) {
1257
1258          my_log("POLYGLOT THINK -> PONDER\n");
1259
1260          State->state = PONDER;
1261          State->exp_move = Uci->ponder_move;
1262
1263       } else {
1264
1265          my_log("POLYGLOT THINK -> WAIT\n");
1266
1267          State->state = WAIT;
1268          State->exp_move = MoveNone;
1269       }
1270
1271    } else if (State->state == PONDER) {
1272
1273       ASSERT(State->computer[game_turn(Game)]);
1274       ASSERT(!State->computer[colour_opp(game_turn(Game))]);
1275       ASSERT(!XB->analyse);
1276
1277       if (move == State->exp_move && Uci->searching) {
1278
1279          ASSERT(Uci->searching);
1280          ASSERT(Uci->pending_nb>=1);
1281
1282          my_timer_start(State->timer);//also resets
1283
1284          my_log("POLYGLOT PONDER -> THINK (*** HIT ***)\n");
1285          engine_send(Engine,"ponderhit");
1286
1287          State->state = THINK;
1288          State->exp_move = MoveNone;
1289
1290          send_pv(); // update display
1291
1292          return; // do not launch a new search
1293
1294       } else {
1295
1296          my_log("POLYGLOT PONDER -> THINK (miss)\n");
1297
1298          stop_search();
1299
1300          State->state = THINK;
1301          State->exp_move = MoveNone;
1302       }
1303
1304    } else if (State->state == ANALYSE) {
1305
1306       ASSERT(XB->analyse);
1307
1308       my_log("POLYGLOT ANALYSE -> ANALYSE\n");
1309
1310       stop_search();
1311
1312    } else {
1313
1314       ASSERT(FALSE);
1315    }
1316
1317    search_update();
1318 }
1319
1320 // start_protected_command()
1321
1322 static void start_protected_command(){
1323     stop_search();
1324 }
1325
1326 static void end_protected_command(){
1327     if(Uci->ready){ // not init faze
1328         uci_send_isready_sync(Uci); // gobble up spurious "bestmove"
1329     }
1330     update_remaining_time();
1331     search_update();   // relaunch search if necessary
1332 }
1333
1334 // update_remaining_time()
1335
1336 static void update_remaining_time(){
1337    double reduce;
1338    if(State->timer->running){
1339        my_timer_stop(State->timer);
1340        reduce = my_timer_elapsed_real(State->timer);
1341        my_log("POLYGLOT reducing remaing time by %f seconds\n",reduce);
1342        XB->my_time -= reduce;
1343        if(XB->my_time<0.0){
1344            XB->my_time=0.0;
1345        }
1346    }
1347 }
1348
1349
1350 // search_update()
1351
1352 static void search_update() {
1353
1354    int move;
1355    int move_nb;
1356    board_t board[1];
1357
1358    ASSERT(!Uci->searching);
1359
1360
1361
1362
1363    // launch a new search if needed
1364
1365
1366
1367    if (State->state == THINK || State->state == PONDER || State->state == ANALYSE) {
1368
1369       // [VdB] moved up as we need the move number
1370
1371        game_get_board(Game,Uci->board);
1372
1373       // opening book
1374
1375        if (State->state == THINK &&
1376            option_get_bool(Option,"Book") &&
1377            Uci->board->move_nb<option_get_int(Option,"BookDepth")
1378            ) {
1379
1380
1381          move = book_move(Uci->board,option_get_bool(Option,"BookRandom"));
1382
1383          if (move != MoveNone && move_is_legal(move,Uci->board)) {
1384
1385             my_log("POLYGLOT *BOOK MOVE*\n");
1386
1387             search_clear(); // clears Uci->ponder_move
1388             Uci->best_move = move;
1389
1390             board_copy(board,Uci->board);
1391             move_do(board,move);
1392             Uci->ponder_move = book_move(board,FALSE); // expected move = best book move
1393
1394             Uci->best_pv[0] = Uci->best_move;
1395             Uci->best_pv[1] = Uci->ponder_move; // can be MoveNone
1396             Uci->best_pv[2] = MoveNone;
1397
1398             comp_move(Uci->best_move);
1399
1400             return;
1401          }
1402       }
1403
1404       // engine search
1405
1406       my_log("POLYGLOT START SEARCH\n");
1407
1408       // options
1409
1410       uci_send_option(Uci,"UCI_Chess960","%s",
1411                       option_get_bool(Option,"Chess960")?"true":"false");
1412
1413       if (option_get_int(Option,"UCIVersion") >= 2) {
1414          uci_send_option(Uci,"UCI_Opponent","none none %s %s",(XB->computer)?"computer":"human",XB->name);
1415          uci_send_option(Uci,"UCI_AnalyseMode","%s",(XB->analyse)?"true":"false");
1416       }
1417
1418       uci_send_option(Uci,"Ponder","%s",ponder()?"true":"false");
1419
1420       // position
1421
1422       move = (State->state == PONDER) ? State->exp_move : MoveNone;
1423       send_board(move); // updates Uci->board global variable
1424
1425       // search
1426
1427       if (State->state == THINK || State->state == PONDER) {
1428
1429          engine_send_queue(Engine,"go");
1430
1431          if (XB->time_limit) {
1432
1433             // fixed time per move
1434
1435              if(XB->node_rate > 0){
1436                  engine_send_queue(Engine,
1437                                    " nodes %.0f",
1438                                    XB->time_max*((double)XB->node_rate));
1439              }else{
1440                  double computed_time;
1441                  double st_fudge;
1442                  st_fudge=(double) option_get_int(Option,"STFudge");
1443                  my_log("POLYGLOT Giving engine %.0fmsec extra time.\n",st_fudge);
1444                  computed_time=XB->time_max*1000.0-st_fudge;
1445                  if(computed_time< 1.0){
1446                      computed_time=1.0;
1447                  }
1448                  engine_send_queue(Engine,
1449                                    " movetime %.0f",
1450                                    computed_time);
1451              }
1452
1453          } else {
1454
1455             // time controls
1456
1457                  if(XB->node_rate > 0) {
1458                      double time;
1459                      move_nb = 40;
1460                      if (XB->mps != 0){
1461                          move_nb = XB->mps - (Uci->board->move_nb % XB->mps);
1462                      }
1463                      time = XB->my_time / move_nb;
1464                      if(XB->inc != 0){
1465                          time += XB->inc;
1466                      }
1467                      if(time > XB->my_time){
1468                          time = XB->my_time;
1469                      }
1470                      engine_send_queue(Engine,
1471                                        " nodes %.0f",
1472                                        time*XB->node_rate);
1473                  } else {
1474
1475                      if (colour_is_white(Uci->board->turn)) {
1476                          engine_send_queue(Engine,
1477                                            " wtime %.0f btime %.0f",
1478                                            XB->my_time*1000.0,XB->opp_time*1000.0);
1479                      } else {
1480                          engine_send_queue(Engine,
1481                                            " wtime %.0f btime %.0f",
1482                                            XB->opp_time*1000.0,XB->my_time*1000.0);
1483                      }
1484
1485                      if (XB->inc != 0.0){
1486                          engine_send_queue(Engine,
1487                                            " winc %.0f binc %.0f",
1488                                            XB->inc*1000.0,XB->inc*1000.0);
1489                      }
1490                      if (XB->mps != 0) {
1491
1492                          move_nb = XB->mps - (Uci->board->move_nb % XB->mps);
1493                          ASSERT(move_nb>=1&&move_nb<=XB->mps);
1494
1495                          engine_send_queue(Engine," movestogo %d",move_nb);
1496                      }
1497                  }
1498          }
1499          if (XB->depth_limit) engine_send_queue(Engine," depth %d",XB->depth_max);
1500
1501          if (State->state == PONDER) engine_send_queue(Engine," ponder");
1502
1503          engine_send(Engine,""); // newline
1504
1505       } else if (State->state == ANALYSE) {
1506          int i;
1507          char move_string[256];
1508
1509          engine_send_queue(Engine,"go infinite");
1510
1511          if(list_size(move_list)) {
1512                 board_t board[1];
1513                 game_get_board(Game,board);
1514             engine_send_queue(Engine," searchmoves");
1515             for(i=0; i<list_size(move_list); i++) {
1516                if(!move_list->value[i]) {
1517                   move_to_can(move_list->move[i],board,move_string,256);
1518                   engine_send_queue(Engine," %s",move_string);
1519                }
1520             }
1521          }
1522          engine_send(Engine,""); // newline
1523
1524       } else {
1525
1526          ASSERT(FALSE);
1527       }
1528
1529       // init search info
1530
1531       ASSERT(!Uci->searching);
1532
1533       search_clear();
1534
1535       Uci->searching = TRUE;
1536       Uci->pending_nb++;
1537    }
1538 }
1539
1540 // search_clear()
1541
1542 static void search_clear() {
1543
1544    uci_clear(Uci);
1545
1546    // TODO: MOVE ME
1547
1548    my_timer_start(State->timer);//also resets
1549 }
1550
1551 // active()
1552
1553 static bool active() {
1554
1555    // position state
1556
1557    if (game_status(Game) != PLAYING) return FALSE; // game ended
1558
1559    // xboard state
1560
1561    if (XB->analyse) return TRUE; // analysing
1562    if (!State->computer[White] && !State->computer[Black]) return FALSE; // force mode
1563    if (XB->new_hack || XB->result) return FALSE; // unstarted or ended game
1564
1565    return TRUE; // playing
1566 }
1567
1568 // ponder()
1569
1570 static bool ponder() {
1571
1572     return XB->ponder && (option_get_bool(Option,"CanPonder") ||
1573                           option_find(Uci->option,"Ponder"));
1574 }
1575 // ponder_ok()
1576
1577 static bool ponder_ok(int move) {
1578    int status;
1579    board_t board[1];
1580
1581    ASSERT(move==MoveNone||move_is_ok(move));
1582
1583    // legal ponder move?
1584
1585    if (move == MoveNone) return FALSE;
1586
1587    game_get_board(Game,board);
1588    if (!move_is_legal(move,board)) return FALSE;
1589
1590    // UCI-legal resulting position?
1591
1592    game_add_move(Game,move);
1593
1594    game_get_board(Game,board);
1595    status = game_status(Game);
1596
1597    game_rem_move(Game);
1598
1599    if (status != PLAYING) return FALSE; // game ended
1600
1601    if (option_get_bool(Option,"Book") && is_in_book(board)) {
1602       return FALSE;
1603    }
1604
1605    return TRUE;
1606 }
1607
1608 // stop_search()
1609
1610 static void stop_search() {
1611
1612    if (Uci->searching) {
1613
1614       ASSERT(Uci->searching);
1615       ASSERT(Uci->pending_nb>=1);
1616
1617       my_log("POLYGLOT STOP SEARCH\n");
1618
1619 /*
1620       engine_send(Engine,"stop");
1621       Uci->searching = FALSE;
1622 */
1623
1624       if (option_get_bool(Option,"SyncStop")) {
1625          uci_send_stop_sync(Uci);
1626       } else {
1627          uci_send_stop(Uci);
1628       }
1629         }
1630 }
1631
1632 // send_board()
1633
1634 static void send_board(int extra_move) {
1635
1636    char fen[256];
1637    int start, end;
1638    board_t board[1];
1639    int pos;
1640    int move;
1641    char string[256];
1642
1643    ASSERT(extra_move==MoveNone||move_is_ok(extra_move));
1644
1645    ASSERT(!Uci->searching);
1646
1647    // init
1648
1649    game_get_board(Game,Uci->board);
1650    if (extra_move != MoveNone) move_do(Uci->board,extra_move);
1651
1652    board_to_fen(Uci->board,fen,256);
1653    my_log("POLYGLOT FEN %s\n",fen);
1654
1655    ASSERT(board_can_play(Uci->board));
1656
1657    // more init
1658
1659    start = 0;
1660    end = game_pos(Game);
1661    ASSERT(end>=start);
1662
1663    // position
1664
1665    game_get_board_ex(Game,board,start);
1666    board_to_fen(board,string,256);
1667
1668    engine_send_queue(Engine,"position");
1669
1670    if (my_string_equal(string,StartFen)) {
1671       engine_send_queue(Engine," startpos");
1672    } else {
1673       engine_send_queue(Engine," fen %s",string);
1674    }
1675
1676    // move list
1677
1678    if (end > start || extra_move != MoveNone) engine_send_queue(Engine," moves");
1679
1680    for (pos = start; pos < end; pos++) { // game moves
1681
1682       move = game_move(Game,pos);
1683
1684       move_to_can(move,board,string,256);
1685       engine_send_queue(Engine," %s",string);
1686
1687       move_do(board,move);
1688    }
1689
1690    if (extra_move != MoveNone) { // move to ponder on
1691       move_to_can(extra_move,board,string,256);
1692       engine_send_queue(Engine," %s",string);
1693    }
1694
1695    // end
1696
1697    engine_send(Engine,""); // newline
1698 }
1699
1700 // send_info()
1701
1702 static void send_info() {
1703     int min_depth;
1704     if(option_get_bool(Option,"WbWorkArounds2")){
1705             // Silly bug in some versions of WinBoard.
1706             // depth <=1 clears the engine output window.
1707             // Why shouldn't an engine be allowed to send info at depth 1?
1708         min_depth=2;
1709     }else{
1710         min_depth=1;
1711     }
1712     if(!strncmp(Uci->info, "xboard ", 7)) gui_send(GUI,"%s",Uci->info+7); else // kludge to allow UCI engines to use WB protocol
1713     gui_send(GUI,"%d %+d %.0f "S64_FORMAT" %s",Uci->best_depth>min_depth?Uci->best_depth:min_depth,
1714              0,0.0,U64(0),Uci->info);
1715 }
1716
1717 // send_pv()
1718
1719 static void send_pv() {
1720
1721    char pv_string[StringSize];
1722    board_t board[1];
1723    int move;
1724    char move_string[StringSize];
1725
1726    ASSERT(State->state!=WAIT);
1727
1728    if (Uci->best_depth == 0) return;
1729
1730    // xboard search information
1731
1732    if (XB->post) {
1733
1734       if (State->state == THINK || State->state == ANALYSE) {
1735
1736          line_to_san(Uci->best_pv,Uci->board,pv_string,StringSize);
1737
1738                  if(Uci->depth==-1) //hack to clear the engine output window
1739              gui_send(GUI,"%d %+d %.0f "S64_FORMAT" ",0,report_best_score(),Uci->time*100.0,Uci->node_nb);
1740                 if(option_get_bool(Option,"ShowTbHits"))
1741                  gui_send(GUI,"%d %+d %.0f "S64_FORMAT" {%d,%.0f,"S64_FORMAT"} %s%c",Uci->best_depth,report_best_score(),
1742                         Uci->time*100.0,Uci->node_nb,Uci->sel_depth,Uci->speed/1e3,Uci->tbhit_nb,pv_string,Uci->bound_type);
1743                 else
1744                  gui_send(GUI,"%d %+d %.0f "S64_FORMAT" %s%c",Uci->best_depth,report_best_score(),Uci->time*100.0,Uci->node_nb,pv_string,Uci->bound_type);
1745
1746       } else if (State->state == PONDER &&
1747                  option_get_bool(Option,"ShowPonder")) {
1748
1749          game_get_board(Game,board);
1750          move = State->exp_move;
1751
1752          if (move != MoveNone && move_is_legal(move,board)) {
1753             move_to_san(move,board,move_string,256);
1754             line_to_san(Uci->best_pv,Uci->board,pv_string,StringSize);
1755             if(option_get_bool(Option,"ShowTbHits"))
1756                  gui_send(GUI,"%d %+d %.0f "S64_FORMAT" {%d,%.0f,"S64_FORMAT"} (%s) %s%c",Uci->best_depth,report_best_score(),
1757                         Uci->time*100.0,Uci->node_nb,Uci->sel_depth,Uci->speed/1e3,Uci->tbhit_nb,move_string,pv_string,Uci->bound_type);
1758             else
1759                 gui_send(GUI,"%d %+d %.0f "S64_FORMAT" (%s) %s%c",Uci->best_depth,report_best_score(),
1760                         Uci->time*100.0,Uci->node_nb,move_string,pv_string,Uci->bound_type);
1761          }
1762       }
1763    }
1764
1765    // kibitz
1766
1767    if ((Uci->searching &&
1768         option_get_bool(Option,"KibitzPV") &&
1769         Uci->time >= option_get_double(Option,"KibitzDelay"))
1770        || (!Uci->searching && option_get_bool(Option,"KibitzMove"))) {
1771
1772       if (State->state == THINK || State->state == ANALYSE) {
1773
1774          line_to_san(Uci->best_pv,Uci->board,pv_string,StringSize);
1775          if(kibitz_throttle(Uci->searching)){
1776              gui_send(GUI,"%s depth=%d time=%.2f node="S64_FORMAT" speed=%.0f score=%+.2f pv=\"%s\"",option_get_string(Option,"KibitzCommand"),Uci->best_depth,Uci->time,Uci->node_nb,Uci->speed,((double)report_best_score())/100.0,pv_string);
1777          }
1778       } else if (State->state == PONDER) {
1779
1780          game_get_board(Game,board);
1781          move = State->exp_move;
1782
1783          if (move != MoveNone && move_is_legal(move,board)) {
1784             move_to_san(move,board,move_string,256);
1785             line_to_san(Uci->best_pv,Uci->board,pv_string,StringSize);
1786             if(kibitz_throttle(Uci->searching)){
1787                 gui_send(GUI,"%s depth=%d time=%.2f node="S64_FORMAT" speed=%.0f score=%+.2f pv=\"(%s) %s\"",option_get_string(Option,"KibitzCommand"),Uci->best_depth,Uci->time,Uci->node_nb,Uci->speed,((double)report_best_score())/100.0,move_string,pv_string);
1788             }
1789          }
1790       }
1791    }
1792 }
1793
1794 // kibitz_throttle()
1795
1796 static bool kibitz_throttle(bool searching){
1797     time_t curr_time;
1798     static time_t lastKibitzMove=0;
1799     static time_t lastKibitzPV=0;
1800     curr_time = time(NULL);
1801     if(searching){   // KibitzPV
1802         if(curr_time >=
1803            (option_get_int(Option,"KibitzInterval") + lastKibitzPV)){
1804             lastKibitzPV=curr_time;
1805             return TRUE;
1806         }
1807     }else{       // KibitzMove
1808         if(curr_time >=
1809            (option_get_int(Option,"KibitzInterval") + lastKibitzMove)){
1810             lastKibitzPV=curr_time;
1811             lastKibitzMove=curr_time;
1812             return TRUE;
1813         }
1814     }
1815     return FALSE;
1816 }
1817
1818 // learn()
1819
1820 static void learn(int result) {
1821
1822    int pos;
1823    board_t board[1];
1824    int move;
1825
1826    ASSERT(result>=-1&&result<=+1);
1827
1828    ASSERT(XB->result);
1829 //   ASSERT(State->computer[White]||State->computer[Black]);
1830
1831    // init
1832
1833    pos = 0;
1834
1835    // [HGM] does not account for the hypothetical possibility we played both sides!
1836    if (State->playedAllMoves[White]) {
1837       pos = 0;
1838    } else if (State->playedAllMoves[Black]) {
1839       pos = 1;
1840       result = -result;
1841    } else {
1842       return; // [HGM] if we did not play all moves for some side, do not learn, but don't make a fuss!
1843    }
1844
1845    if (FALSE) {
1846    } else if (result > 0) {
1847       my_log("POLYGLOT *LEARN WIN*\n");
1848    } else if (result < 0) {
1849       my_log("POLYGLOT *LEARN LOSS*\n");
1850    } else {
1851       my_log("POLYGLOT *LEARN DRAW*\n");
1852    }
1853
1854    // loop
1855
1856    for (; pos < Game->size; pos += 2) {
1857
1858       game_get_board_ex(Game,board,pos);
1859       move = game_move(Game,pos);
1860
1861       book_learn_move(board,move,result);
1862    }
1863
1864    book_flush();
1865 }
1866
1867 // end of xboard2uci.c