///////////////////////////////
// sends the 'info' command to the UI, reporting the current
// search status.
///////////////////////////////
void
report_search_info(void)
{
clock_t time = clock() - searchInfo->startTime;
float nps = (float)searchInfo->nodes / (time / 1000);
int rmn = searchInfo->curRootMoveNum;
int score = searchInfo->bestRootScore;
if (suppressSearchStatus || time < 1000)
return;
printf("info currmove %s currmovenumber %d\n",
move2str(searchInfo->rootMoves[rmn].move), rmn + 1);
printf("info depth %d ", searchInfo->depth);
if (abs(score) < MATE - 200)
printf("score cp %d ", score);
else
printf("score mate %d ", score > 0 ? (score - MATE + 1) / 2 : (score + MATE) / 2);
printf("time %lu nodes %llu nps %.0f pv %s\n",
time, searchInfo->nodes, nps, move2str(searchInfo->bestRootMove));
fflush(stdout);
}
void do_move(char *ini_moves, int from, int sz)
{
char pv[6], str_move[6];
int i, to;
for (i = 0; i < sz; i++)
{
pv[i] = ini_moves[from + i];
}
pv[i] = 0;
from = board.idx_moves;
movegen();
to = board.idx_moves;
for (i = from; i < to; i++)
{
if (!strcmp(move2str(board.moves[i], str_move), pv))
{
make_move(board.moves[i]);
return;
}
}
}
/*Inizializza la ricerca e gestisce l'iterative deeping*/
unsigned int find_best_move(const int output_mode,const int search_mode) {
int depth, score, i,c,d,start_depth;
int alpha, beta;
MOVE m = {0};
/*inizializzazioni varie*/
tree.start_time = time_elapsed();
tree.stop_time = tree.start_time + tree.delta_time;
Ply = 0;
Nodes = 0;
tree.abort_search = 0;
start_depth=tree.ponder_start_depth-1;
alpha = -INF;
beta = +INF;
do {
if (search_mode==CONTINUE_SEARCH) break;
start_depth=1;
tree.ponder_start_depth=1;
for (i=0;i<MAX_PLY;i++) {
tree.old_pv[i].mi=0;
tree.k_heuristic[i].m1.mi=0;
tree.k_heuristic[i].m2.mi=0;
tree.k_heuristic[i].score1=0;
tree.k_heuristic[i].score2=0;
for (c=0;c<MAX_PLY;c++) tree.pv[i][c].mi=0;
}
for (i=0;i<256;i++) {
for (c=0;c<256;c++) {
tree.h_heuristic[i][c]=0;
}
}
for (i=0;i<64;i++) {
for (c=0;c<64;c++) {
for (d=0;d<256;d++)tree.c_heuristic[i][c][d].mi=0;
}
}
if (mizar.o.use_hash) reset_tt();
}while (0);
/*Precalcoliamo*/
Phase(WHITE) = eval_phase(WHITE);
Phase(BLACK) = eval_phase(BLACK);
/*Prepariamo il nodo radice*/
root();
Nodes=0;
if (output_mode == IO_CONSOLE)
printf("ply score time nodes pv\n");
/*iterative deeping*/
for (depth = start_depth;depth <= tree.max_depth;depth++) {
tree.ponder_start_depth=depth;
tree.follow_pv = 1;
score = search_root( alpha, beta, depth);
if (tree.abort_search)
break;
if (score<=alpha || score >=beta) {
alpha = -INF;
beta = +INF;
tree.follow_pv = 1;
score = search_root( alpha, beta, depth);
if (tree.abort_search)
break;
}
else {
alpha = score - ASPIRATION_W;
beta = score + ASPIRATION_W;
}
m.mi = tree.pv[0][0].mi;
for (i=0;i<MAX_PLY;i++)
tree.old_pv[i].mi=0;
sort_root_nodes();
for (i = 0;i < tree.pv_lenght[0];i++)
tree.old_pv[i] = tree.pv[0][i];
if (output_mode == IO_CONSOLE) {
printf("%3d %5d %8d %9d", depth, score, (time_elapsed() - tree.start_time) / 100, Nodes);
}
else if (output_mode == IO_WINBOARD) {
printf("%d %d %d %d", depth, score, (time_elapsed() - tree.start_time) / 10, Nodes);
}
if (output_mode) {
if (!mizar.o.only_pv) printf(" Phs:%d Phx:%d",Phase(Side),Phase(Xside));
for (i = 0;i < tree.pv_lenght[0];i++)
printf(" %s", move2str(tree.old_pv[i]));
printf("\n");
fflush(stdout);
}
}
return (m.mi);
}
///////////////////////////////
// reads in the time controls (a hassle), stores the information
// into the search info structure, then calls the search.
///////////////////////////////
static bool
cmd_go(const char *args)
{
int mtg = 0, depthmax = 0;
int wtime = 0, btime = 0, winc = 0, binc = 0;
long nodemax = 0, movetime = 0;
int time, inc;
if (rootPosition == NULL) {
cout << "Invalid position: can't go." << endl;
return false;
}
if (args == NULL || strstr(args, "infinite") != NULL)
searchInfo->inf = true;
else {
searchInfo->inf = false;
if (get_long_arg(args, "movetime", movetime))
searchInfo->endTime = clock() + movetime;
else {
get_int_arg(args, "wtime", wtime);
get_int_arg(args, "btime", btime);
get_int_arg(args, "winc", winc);
get_int_arg(args, "binc", binc);
get_int_arg(args, "movestogo", mtg);
get_int_arg(args, "depth", depthmax);
get_long_arg(args, "nodes", nodemax);
if (depthmax != 0)
searchInfo->depthLimit = depthmax;
if (nodemax != 0)
searchInfo->nodeLimit = nodemax;
// found this time calculation in scatha.
// much better than what i came up with.
if (Stm(0) == WHITE) {
time = wtime;
inc = winc;
} else {
time = btime;
inc = binc;
}
if (mtg == 0) {
if (inc != 0)
time = time / 30 + inc;
else
time = time / 40;
} else {
if (mtg == 1)
time = time / 2;
else
time = time / Min(mtg, 20);
}
searchInfo->endTime = clock() + time;
}
}
move_t move = search(rootPosition);
if (!move) {
cout << "Error: Search failed to find a move..." << endl;
return false;
}
make_history_move(rootPosition, move);
cout << "bestmove " << move2str(move) << endl;
cout.flush();
return true;
}