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#include "chess.h"
#include "data.h"
/* last modified 01/18/09 */
/*
*******************************************************************************
* *
* Analyze() is used to handle the "analyze" command. This mode basically *
* puts Crafty into a "permanent pondering" state, where it reads a move from*
* the input stream, and then "ponders" for the opposite side. Whenever a *
* move is entered, Crafty reads this move, updates the game board, and then *
* starts "pondering" for the other side. *
* *
* The purpose of this mode is to force Crafty to follow along in a game, *
* providing analysis continually for the side on move until a move is *
* entered, advancing the game to the next position. *
* *
*******************************************************************************
*/
void Analyze() {
int i, move, back_number, readstat = 1;
TREE *const tree = block[0];
/*
************************************************************
* *
* Initialize. *
* *
************************************************************
*/
int save_swindle_mode = swindle_mode;
swindle_mode = 0;
ponder_move = 0;
analyze_mode = 1;
if (!xboard)
display_options |= 1 + 2 + 4;
printf("Analyze Mode: type \"exit\" to terminate.\n");
/*
************************************************************
* *
* Now loop waiting on input, searching the current *
* position continually until a move comes in. *
* *
************************************************************
*/
do {
do {
last_pv.pathd = 0;
last_pv.pathl = 0;
input_status = 0;
pondering = 1;
tree->position[1] = tree->position[0];
(void) Iterate(wtm, think, 0);
pondering = 0;
if (book_move)
moves_out_of_book = 0;
if (!xboard) {
if (wtm)
printf("analyze.White(%d): ", move_number);
else
printf("analyze.Black(%d): ", move_number);
fflush(stdout);
}
/*
************************************************************
* *
* If we get back to here, something has been typed in and *
* is in the command buffer normally, unless the search *
* terminated naturally due to finding a mate or reaching *
* the max depth allowable. *
* *
************************************************************
*/
if (!input_status)
do {
readstat = Read(1, buffer);
if (readstat < 0)
break;
nargs = ReadParse(buffer, args, " ;");
Print(128, "%s\n", buffer);
if (strstr(args[0], "timeleft") && !xboard) {
if (wtm)
printf("analyze.White(%d): ", move_number);
else
printf("analyze.Black(%d): ", move_number);
fflush(stdout);
}
} while (strstr(args[0], "timeleft"));
else
nargs = ReadParse(buffer, args, " ;");
if (readstat < 0)
break;
move = 0;
if (!strcmp(args[0], "exit"))
break;
/*
************************************************************
* *
* First, check for the special analyze command "back n" *
* and handle it if present, otherwise try Option() to see *
* if it recognizes the input as a command. *
* *
************************************************************
*/
if (OptionMatch("back", args[0])) {
if (nargs > 1)
back_number = atoi(args[1]);
else
back_number = 1;
for (i = 0; i < back_number; i++) {
wtm = Flip(wtm);
if (Flip(wtm))
move_number--;
}
if (move_number == 0) {
move_number = 1;
wtm = 1;
}
sprintf(buffer, "reset %d", move_number);
(void) Option(tree);
display = tree->pos;
} else if (Option(tree)) {
display = tree->pos;
}
/*
************************************************************
* *
* If InputMove() can recognize this as a move, make it, *
* swap sides, and return to the top of the loop to call *
* search from this new position. *
* *
************************************************************
*/
else if ((move = InputMove(tree, buffer, 0, wtm, 1, 0))) {
char *outmove = OutputMove(tree, move, 0, wtm);
if (history_file) {
fseek(history_file, ((move_number - 1) * 2 + 1 - wtm) * 10,
SEEK_SET);
fprintf(history_file, "%9s\n", outmove);
}
if (wtm)
Print(128, "White(%d): ", move_number);
else
Print(128, "Black(%d): ", move_number);
Print(128, "%s\n", outmove);
if (speech) {
char announce[64];
strcpy(announce, SPEAK);
strcat(announce, outmove);
system(announce);
}
MakeMoveRoot(tree, move, wtm);
display = tree->pos;
last_mate_score = 0;
if (log_file)
DisplayChessBoard(log_file, tree->pos);
}
/*
************************************************************
* *
* If Option() didn't handle the input, then it is illegal *
* and should be reported to the user. *
* *
************************************************************
*/
else {
pondering = 0;
if (Option(tree) == 0)
printf("illegal move: %s\n", buffer);
pondering = 1;
display = tree->pos;
}
} while (!move);
if (readstat < 0 || !strcmp(args[0], "exit"))
break;
wtm = Flip(wtm);
if (wtm)
move_number++;
} while (1);
analyze_mode = 0;
printf("analyze complete.\n");
pondering = 0;
swindle_mode = save_swindle_mode;
}
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