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gtp.c
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gtp.c
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#define DEBUG
#include <assert.h>
#include <ctype.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "board.h"
#include "pachi.h"
#include "debug.h"
#include "engine.h"
#include "fbook.h"
#include "gtp.h"
#include "mq.h"
#include "uct/uct.h"
#include "version.h"
#include "timeinfo.h"
#include "ownermap.h"
#include "gogui.h"
#include "t-predict/predict.h"
#include "josekifix/josekifix.h"
#include "t-unit/test.h"
#include "fifo.h"
/* Sleep 5 seconds after a game ends to give time to kill the program. */
#define GAME_OVER_SLEEP 5
/* Don't put standalone globals in gtp.c, some engines call gtp_parse()
* internally and your global will likely get changed unintentionally.
* Add some field in gtp_t instead and access it from whatever gtp_t
* context is appropriate. */
void
gtp_init(gtp_t *gtp, board_t *b)
{
memset(gtp, 0, sizeof(*gtp));
b->move_history = >p->history;
}
void
gtp_done(gtp_t *gtp)
{
if (gtp->custom_name) free(gtp->custom_name);
if (gtp->banner) free(gtp->banner);
memset(gtp, 0, sizeof(*gtp));
}
typedef enum parse_code (*gtp_func_t)(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp);
typedef struct
{
char *cmd;
gtp_func_t f;
} gtp_command_t;
static gtp_command_t *commands;
/* Output gtp reply's initial char ('=', '?') */
static void
gtp_prefix(gtp_t *gtp, char prefix)
{
if (gtp->replied || gtp->quiet) return;
gtp->replied = true;
if (gtp->quiet) return;
if (gtp->id >= 0) printf("%c%d ", prefix, gtp->id);
else printf("%c ", prefix);
}
/* Finish gtp reply, output final '\n' if needed. */
static void
gtp_flush(gtp_t *gtp)
{
if (gtp->flushed || gtp->quiet) return;
if (!gtp->replied) gtp_reply(gtp, "");
gtp->flushed = true;
putchar('\n');
fflush(stdout); /* in network mode stdout is not line-buffered */
}
/* Output one line, end-of-line \n added automatically. */
void
gtp_reply(gtp_t *gtp, const char *str)
{
if (gtp->quiet) return;
gtp_prefix(gtp, '=');
if (str) fputs(str, stdout);
putchar('\n');
}
void
gtp_error(gtp_t *gtp, const char *str)
{
gtp->error = true;
/* errors never quiet */
gtp_prefix(gtp, '?');
fputs(str, stdout);
putchar('\n');
gtp_flush(gtp); /* flush errors right away */
}
/* Output anything (no \n added). */
void
gtp_printf(gtp_t *gtp, const char *format, ...)
{
if (gtp->quiet) return;
va_list ap;
va_start(ap, format);
gtp_prefix(gtp, '=');
vprintf(format, ap);
va_end(ap);
}
void
gtp_error_printf(gtp_t *gtp, const char *format, ...)
{
gtp->error = true;
/* errors never quiet */
va_list ap;
va_start(ap, format);
gtp_prefix(gtp, '?');
vprintf(format, ap);
gtp_flush(gtp); /* flush errors right away */
va_end(ap);
}
/* Everything should be using gtp_reply() etc from here on. */
#define gtp_prefix dont_call_gtp_prefix
/* List of public gtp commands. The internal command pachi-genmoves is not exported,
* it should only be used between master and slaves of the distributed engine.
* kgs-chat command enabled only if --kgs-chat passed (makes kgsgtp-3.5.20+ crash).
* For now only uct engine supports gogui-analyze_commands. */
static char*
known_commands(gtp_t *gtp)
{
static_strbuf(buf, 8192);
for (int i = 0; commands[i].cmd; i++) {
char *cmd = commands[i].cmd;
if (str_prefix("pachi-genmoves", cmd)) continue;
if (!strcmp("kgs-chat", cmd) && !gtp->kgs_chat) continue;
sbprintf(buf, "%s\n", commands[i].cmd);
}
sbprintf(buf, "gogui-analyze_commands\n");
return buf->str;
}
static gtp_func_t
gtp_get_handler(const char *cmd)
{
if (!cmd) return NULL;
for (int i = 0; commands[i].cmd; i++)
if (!strcasecmp(cmd, commands[i].cmd))
return commands[i].f;
return NULL;
}
/* Return true if cmd is a valid gtp command. */
bool
gtp_is_valid(engine_t *e, const char *cmd)
{
if (!cmd || !*cmd) return false;
return (gtp_get_handler(cmd) != NULL);
}
static enum parse_code
cmd_protocol_version(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_reply(gtp, "2");
return P_OK;
}
static enum parse_code
cmd_name(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *name = "Pachi %s";
if (!strcmp(e->name, "UCT")) name = "Pachi";
if (gtp->custom_name) name = gtp->custom_name;
gtp_printf(gtp, name, e->name);
gtp_printf(gtp, "\n");
return P_OK;
}
static enum parse_code
cmd_echo(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_printf(gtp, "%s", gtp->next);
return P_OK;
}
/* Return Pachi version.
* On kgs also return banner (game start message, set with --banner). */
static enum parse_code
cmd_version(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_printf(gtp, "%s", PACHI_VERSION);
/* Show josekifix status */
if (!get_josekifix_enabled() && e->id == E_UCT)
gtp_printf(gtp, " (joseki fixes disabled)");
/* kgs hijacks 'version' gtp command for game start message. */
if (gtp->kgs && gtp->banner)
gtp_printf(gtp, ". %s", gtp->banner);
gtp_printf(gtp, "\n");
return P_OK;
}
static enum parse_code
cmd_list_commands(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_printf(gtp, "%s", known_commands(gtp));
return P_OK;
}
static enum parse_code
cmd_known_command(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
if (gtp_is_valid(e, arg)) gtp_reply(gtp, "true");
else gtp_reply(gtp, "false");
return P_OK;
}
static enum parse_code
cmd_quit(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_flush(gtp);
pachi_done();
exit(0);
}
static enum parse_code
cmd_boardsize(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
int size = atoi(arg);
/* Give sane error msg if pachi was compiled for a specific board size. */
#ifdef BOARD_SIZE
if (size != BOARD_SIZE) {
gtp_error_printf(gtp, "This Pachi only plays on %ix%i.\n", BOARD_SIZE, BOARD_SIZE);
die("Yozaa ! This Pachi only plays on %ix%i.\n", BOARD_SIZE, BOARD_SIZE);
}
#endif
if (size < 1 || size > BOARD_MAX_SIZE) {
gtp_error(gtp, "illegal board size");
return P_OK;
}
board_resize(b, size);
board_clear(b);
return P_ENGINE_RESET;
}
static enum parse_code
cmd_clear_board(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
board_clear(b);
gtp->played_games++;
if (DEBUGL(3) && debug_boardprint)
board_print(b, stderr);
return P_ENGINE_RESET;
}
static enum parse_code
cmd_kgs_game_over(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
/* The game may not be really over, just adjourned.
* Do not clear the board to avoid illegal moves
* if the game is resumed immediately after. KGS
* may start directly with genmove on resumption. */
if (DEBUGL(1)) {
fprintf(stderr, "game is over\n");
fflush(stderr);
}
if (e->stop)
e->stop(e);
/* Sleep before replying, so that kgs doesn't
* start another game immediately. */
sleep(GAME_OVER_SLEEP);
return P_OK;
}
static enum parse_code
cmd_komi(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
sscanf(arg, PRIfloating, &b->komi);
if (DEBUGL(3) && debug_boardprint)
board_print(b, stderr);
return P_OK;
}
static enum parse_code
cmd_kgs_rules(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
/* Print timestamp at game start, makes logs more useful */
if (DEBUGL(2)) fprintf(stderr, "%s\n", time_str());
if (pachi_options()->forced_rules) {
if (DEBUGL(2)) fprintf(stderr, "ignored kgs-rules, using %s.\n", rules2str(b->rules));
return P_OK;
}
if (!board_set_rules(b, arg))
gtp_error(gtp, "unknown rules");
return P_OK;
}
static enum parse_code
cmd_play(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
move_t m;
char *arg;
gtp_arg(arg);
m.color = str2stone(arg);
gtp_arg(arg);
m.coord = str2coord(arg);
arg = gtp->next;
char *enginearg = arg;
// This is where kgs starts the timer, not at genmove!
time_start_timer(&ti[stone_other(m.color)]);
// XXX engine getting notified if move is illegal !
bool print = false;
char *reply = (e->notify_play ? e->notify_play(e, b, &m, enginearg, &print) : NULL);
if (board_play(b, &m) < 0) {
if (DEBUGL(0)) {
fprintf(stderr, "! ILLEGAL MOVE %s %s\n", stone2str(m.color), coord2sstr(m.coord));
board_print(b, stderr);
}
gtp_error(gtp, "illegal move");
return P_OK;
}
if (print || (DEBUGL(4) && debug_boardprint))
engine_board_print(e, b, stderr);
gtp_reply(gtp, reply);
return P_OK;
}
static enum parse_code
cmd_pachi_predict(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
move_t m;
char *arg;
gtp_arg(arg);
m.color = str2stone(arg);
gtp_arg(arg);
m.coord = str2coord(arg);
char *str = predict_move(b, e, ti, &m, gtp->played_games);
gtp_reply(gtp, str);
free(str);
return P_OK;
}
/* Get move from engine, or joseki override if there is one.
* There are 2 joseki override hooks : one before engine genmove (this one),
* and another one at the end of uct genmove. Without external engine we'd
* need only the second one, but with 2 engines we want to avoid asking both
* engines as that would mean a serious delay. So this acts as a dispatch,
* short-cirtuiting engine genmove when we know it will be overridden by an
* external engine move. */
static coord_t
genmove_get_move(board_t *b, enum stone color, engine_t *e, time_info_t *ti_genmove,
gtp_t *gtp, engine_genmove_t genmove_func)
{
bool pass_all_alive = !strcasecmp(gtp->cmd, "kgs-genmove_cleanup");
coord_t c = pass;
#ifdef JOSEKIFIX
if (is_pass(c) && e->id == E_UCT)
c = joseki_override_before_genmove(b, color);
#endif
if (is_pass(c))
c = genmove_func(e, b, ti_genmove, color, pass_all_alive);
return c;
}
static coord_t
genmove(board_t *b, enum stone color, engine_t *e, time_info_t *ti, gtp_t *gtp, engine_genmove_t genmove_func)
{
if (DEBUGL(2) && debug_boardprint)
engine_board_print(e, b, stderr);
if (!ti[color].timer_start) /* First game move. */
time_start_timer(&ti[color]);
#ifdef PACHI_FIFO /* Coordinate between multiple Pachi instances. */
double time_wait = time_now();
int ticket = fifo_task_queue();
double time_start = time_now();
#endif
#ifdef JOSEKIFIX
external_joseki_engine_genmoved = 0;
#endif
time_info_t *ti_genmove = time_info_genmove(b, ti, color);
coord_t c = (b->fbook ? fbook_check(b) : pass);
if (is_pass(c))
c = genmove_get_move(b, color, e, ti_genmove, gtp, genmove_func);
#ifdef PACHI_FIFO
if (DEBUGL(2)) fprintf(stderr, "fifo: genmove in %0.2fs (waited %0.1fs)\n", time_now() - time_start, time_start - time_wait);
fifo_task_done(ticket);
#endif
if (!is_resign(c)) {
move_t m = move(c, color);
if (board_play(b, &m) < 0)
die("Attempted to generate an illegal move: %s %s\n", stone2str(m.color), coord2sstr(m.coord));
#ifdef JOSEKIFIX
/* send new move to external engine if it doesn't come from it */
if (!external_joseki_engine_genmoved && e->id == E_UCT)
external_joseki_engine_play(c, color);
#endif
}
char *str = coord2sstr(c);
if (DEBUGL(4)) fprintf(stderr, "playing move %s\n", str);
if (DEBUGL(1) && debug_boardprint) engine_board_print(e, b, stderr);
/* Account for spent time. If our GTP peer keeps our clock, this will
* be overriden by next time_left GTP command properly. */
/* (XXX: Except if we pass to byoyomi and the peer doesn't, but that
* should be absolutely rare situation and we will just spend a little
* less time than we could on next few moves.) */
if (ti[color].type != TT_NULL && ti[color].dim == TD_WALLTIME)
time_sub(&ti[color], time_now() - ti[color].timer_start, true);
return c;
}
static enum parse_code
cmd_genmove(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
coord_t c = genmove(b, color, e, ti, gtp, e->genmove);
gtp_reply(gtp, coord2sstr(c));
return P_OK;
}
/* lz-genmove_analyze: get winrates etc during genmove.
* Similar to Leela-zero lz-genmove_analyze
* syntax: lz-genmove_analyze <color> <freq> */
static enum parse_code
cmd_lz_genmove_analyze(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
if (color == S_NONE) { gtp_error(gtp, "bad argument"); return P_OK; }
gtp_arg(arg);
if (!isdigit(*arg)) { gtp_error(gtp, "bad argument"); return P_OK; }
int freq = atoi(arg); /* frequency (centiseconds) */
if (!e->genmove_analyze) { gtp_error(gtp, "lz-genmove_analyze not supported for this engine"); return P_OK; }
strbuf(buf, 100); char *err;
sbprintf(buf, "reportfreq=%fs", 0.01 * freq);
bool r = engine_setoptions(e, b, buf->str, &err); assert(r);
gtp_printf(gtp, "\n");
coord_t c = genmove(b, color, e, ti, gtp, e->genmove_analyze);
printf("play %s\n", coord2sstr(c));
return P_OK;
}
/* Used by slaves in distributed mode.
* Special: may send binary data after gtp reply. */
static enum parse_code
cmd_pachi_genmoves(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
void *stats;
int stats_size;
time_info_t *ti_genmove = time_info_genmove(b, ti, color);
char *reply = e->genmoves(e, b, ti_genmove, color, gtp->next,
!strcasecmp(gtp->cmd, "pachi-genmoves_cleanup"),
&stats, &stats_size);
if (!reply) { gtp_error(gtp, "genmoves error"); return P_OK; }
if (DEBUGL(3)) fprintf(stderr, "proposing moves %s\n", reply);
if (DEBUGL(4) && debug_boardprint) engine_board_print(e, b, stderr);
gtp_reply(gtp, reply);
putchar('\n'); // gtp_flush() sortof,
gtp->flushed = true; // but we handle fflush() ourselves here.
if (stats_size > 0) { // send binary part
double start = time_now();
fwrite(stats, 1, stats_size, stdout);
if (DEBUGVV(3))
fprintf(stderr, "sent reply %d bytes in %.4fms\n",
stats_size, (time_now() - start)*1000);
}
fflush(stdout);
return P_OK;
}
static void
gtp_reset_engine(gtp_t *gtp, board_t *b, engine_t *e, time_info_t *ti)
{
engine_reset(e, b);
/* Reset timer */
ti[S_BLACK].timer_start = 0;
ti[S_WHITE].timer_start = 0;
}
static int
engine_pondering(engine_t *e)
{
option_t *o = engine_options_lookup(&e->options, "pondering");
if (!o) return 0;
return (!o->val || atoi(o->val));
}
/* Keep track of analyze mode / genmove mode and manage engine.
* Allows to reset engine only when needed so we don't lose analyze data
* when toggling analyze on and off.
* normal: reset engine when switching from analyze mode -> genmove mode
* analyze tree shouldn't affect next genmove.
* pondering: don't reset !
* engine handles switching from pondering <-> pondering + analyzing */
static void
gtp_set_analyze_mode(gtp_t *gtp, board_t *b, engine_t *e, time_info_t *ti, bool analyze_mode)
{
if (analyze_mode != gtp->analyze_mode) {
// fprintf(stderr, "gtp: switching analyze_mode: %i -> %i\n", gtp->analyze_mode, analyze_mode);
gtp->analyze_mode = analyze_mode;
if (!engine_pondering(e))
if (!analyze_mode) /* analyze mode -> genmove mode */
gtp_reset_engine(gtp, b, e, ti);
}
}
static void
stop_analyzing(gtp_t *gtp, board_t *b, engine_t *e)
{
gtp->analyze_running = false;
e->analyze(e, b, S_BLACK, 0);
printf("\n"); /* end of lz-analyze output */
fflush(stdout);
}
/* Start pondering and output stats for the sake of frontend running Pachi.
* Stop processing when we receive some other command.
* Similar to Leela-Zero's lz-analyze so we can feed data to Lizzie / Sabaki.
* Usage: lz-analyze <freq> (centiseconds)
* lz-analyze <color> <freq>
* lz-analyze with allow move / avoid move syntax unsupported right now. */
static enum parse_code
cmd_lz_analyze(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
enum stone color = board_to_play(b);
char *arg;
gtp_arg(arg);
/* optional color argument ? */
if (tolower(arg[0]) == 'w' || tolower(arg[0]) == 'b') { color = str2stone(arg); gtp_arg(arg); }
if (!isdigit(*arg)) { gtp_error(gtp, "bad argument"); return P_OK; }
if (!e->analyze) { gtp_error(gtp, "lz-analyze not supported for this engine"); return P_OK; }
int freq = atoi(arg); /* frequency (centiseconds) */
if (!freq) { stop_analyzing(gtp, b, e); return P_OK; }
strbuf(buf, 100); char *err;
sbprintf(buf, "reportfreq=%fs", 0.01 * freq);
bool r = engine_setoptions(e, b, buf->str, &err); assert(r);
gtp_printf(gtp, ""); /* just "= \n" output, last newline will be sent when we stop analyzing */
gtp_set_analyze_mode(gtp, b, e, ti, true);
gtp->analyze_running = true;
e->analyze(e, b, color, 1);
return P_OK;
}
static enum parse_code
cmd_set_free_handicap(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
do {
move_t m = move(str2coord(arg), S_BLACK);
if (DEBUGL(4)) fprintf(stderr, "setting handicap %s\n", arg);
// XXX board left in inconsistent state if illegal move comes in
if (board_play(b, &m) < 0) {
if (DEBUGL(0)) fprintf(stderr, "! ILLEGAL MOVE %s\n", arg);
gtp_error(gtp, "illegal move");
}
b->handicap++;
gtp_arg_optional(arg);
} while (*arg);
if (DEBUGL(1) && debug_boardprint)
board_print(b, stderr);
return P_OK;
}
/* TODO: Engine should choose free handicap; however, it tends to take
* overly long to think it all out, and unless it's clever its
* handicap stones won't be of much help. ;-) */
static enum parse_code
cmd_fixed_handicap(board_t *b, engine_t *engine, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
int stones = atoi(arg);
move_queue_t q; mq_init(&q);
board_handicap(b, stones, &q);
if (DEBUGL(1) && debug_boardprint)
board_print(b, stderr);
for (int i = 0; i < q.moves; i++) {
move_t m = move(q.move[i], S_BLACK);
gtp_printf(gtp, "%s ", coord2sstr(m.coord));
}
gtp_printf(gtp, "\n");
#ifdef JOSEKIFIX
if (external_joseki_engine && !strcmp(gtp->cmd, "place_free_handicap") && engine->id == E_UCT)
external_joseki_engine_fixed_handicap(stones); // XXX assumes other engine places fixed handi stones like us ...
#endif
return P_OK;
}
static enum parse_code
cmd_final_score(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *msg = NULL;
ownermap_t *o = engine_ownermap(e, b);
if (o && !board_position_final(b, o, &msg)) {
gtp_error(gtp, msg);
return P_OK;
}
move_queue_t q;
engine_dead_groups(e, b, &q);
char *score_str = board_official_score_str(b, &q);
if (DEBUGL(1)) fprintf(stderr, "official score: %s\n", score_str);
gtp_printf(gtp, "%s\n", score_str);
return P_OK;
}
static enum parse_code
cmd_pachi_score_est(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
ownermap_t *ownermap = engine_ownermap(e, b);
if (!ownermap) { gtp_error(gtp, "no ownermap"); return P_OK; }
board_print_ownermap(b, stderr, ownermap);
gtp_reply(gtp, ownermap_score_est_str(b, ownermap));
return P_OK;
}
static enum parse_code
cmd_pachi_setoption(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg, *err;
gtp_arg(arg);
if (!engine_setoptions(e, b, arg, &err))
gtp_error(gtp, err);
return P_OK;
}
/* Get engine option(s):
* Without arg, return all options (comma-separated)
* With arg (option name), return option value. */
static enum parse_code
cmd_pachi_getoption(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *name;
gtp_arg_optional(name);
if (*name) { /* Return option value */
option_t *o = engine_options_lookup(&e->options, name);
if (!o) gtp_error(gtp, "option not set");
else gtp_reply(gtp, (o->val ? o->val : ""));
return P_OK;
}
/* Dump all options. */
strbuf(buf, 1024);
engine_options_concat(buf, &e->options);
gtp_reply(gtp, buf->str);
return P_OK;
}
static int
cmd_final_status_list_dead(char *arg, board_t *b, engine_t *e, gtp_t *gtp)
{
move_queue_t q;
engine_dead_groups(e, b, &q);
for (int i = 0; i < q.moves; i++) {
foreach_in_group(b, q.move[i]) {
gtp_printf(gtp, "%s ", coord2sstr(c));
} foreach_in_group_end;
gtp_printf(gtp, "\n");
}
if (DEBUGL(1)) { /* show final score and board */
fprintf(stderr, "\nfinal score: %s (%s)\n", board_official_score_str(b, &q), rules2str(b->rules));
board_print_official_ownermap(b, &q);
}
return q.moves;
}
static int
cmd_final_status_list_alive(char *arg, board_t *b, engine_t *e, gtp_t *gtp)
{
move_queue_t q;
engine_dead_groups(e, b, &q);
int printed = 0;
foreach_point(b) { // foreach_group, effectively
group_t g = group_at(b, c);
if (!g || g != c) continue;
for (int i = 0; i < q.moves; i++)
if (q.move[i] == g) goto next_group;
foreach_in_group(b, g) {
gtp_printf(gtp, "%s ", coord2sstr(c));
} foreach_in_group_end;
gtp_printf(gtp, "\n"); printed++;
next_group:;
} foreach_point_end;
return printed;
}
static int
cmd_final_status_list_seki(char *arg, board_t *b, engine_t *e, gtp_t *gtp)
{
ownermap_t *ownermap = engine_ownermap(e, b);
if (!ownermap) { gtp_error(gtp, "no ownermap"); return -1; }
int printed = 0;
move_queue_t sekis; mq_init(&sekis);
foreach_point(b) {
if (board_at(b, c) == S_OFFBOARD) continue;
if (ownermap_judge_point(ownermap, c, 0.80) != PJ_SEKI) continue;
foreach_neighbor(b, c, {
group_t g = group_at(b, c);
if (!g) continue;
mq_add(&sekis, g, 0);
mq_nodup(&sekis);
});
} foreach_point_end;
for (int i = 0; i < sekis.moves; i++) {
foreach_in_group(b, sekis.move[i]) {
gtp_printf(gtp, "%s ", coord2sstr(c));
} foreach_in_group_end;
gtp_printf(gtp, "\n"); printed++;
}
return printed;
}
static int
cmd_final_status_list_territory(char *arg, board_t *b, engine_t *e, gtp_t *gtp)
{
enum stone color = str2stone(arg);
ownermap_t *ownermap = engine_ownermap(e, b);
if (!ownermap) { gtp_error(gtp, "no ownermap"); return -1; }
foreach_point(b) {
if (board_at(b, c) != S_NONE) continue;
if (ownermap_color(ownermap, c, 0.67) != color) continue;
gtp_printf(gtp, "%s ", coord2sstr(c));
} foreach_point_end;
gtp_printf(gtp, "\n");
return 1;
}
/* XXX: This is a huge hack. */
static enum parse_code
cmd_final_status_list(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
if (gtp->quiet) return P_OK;
char *arg;
gtp_arg(arg);
int r = -1;
if (!strcasecmp(arg, "dead")) r = cmd_final_status_list_dead(arg, b, e, gtp);
else if (!strcasecmp(arg, "alive")) r = cmd_final_status_list_alive(arg, b, e, gtp);
else if (!strcasecmp(arg, "seki")) r = cmd_final_status_list_seki(arg, b, e, gtp);
else if (!strcasecmp(arg, "black_territory") || /* gnugo extensions */
!strcasecmp(arg, "white_territory")) r = cmd_final_status_list_territory(arg, b, e, gtp);
else gtp_error(gtp, "illegal status specifier");
if (r < 0) return P_OK;
if (!r) gtp_printf(gtp, "\n");
return P_OK;
}
/* Handle undo at the gtp level. */
static enum parse_code
cmd_undo(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
/* --noundo: undo only allowed for pass. */
if (gtp->noundo && !is_pass(last_move(b).coord)) {
if (DEBUGL(1)) fprintf(stderr, "undo on non-pass move %s\n", coord2sstr(last_move(b).coord));
gtp_error(gtp, "cannot undo");
return P_OK;
}
move_history_t *h = >p->history;
if (!h->moves) { gtp_error(gtp, "no moves to undo"); return P_OK; }
if (b->moves == b->handicap) { gtp_error(gtp, "can't undo handicap"); return P_OK; }
h->moves--;
/* Send a play command to engine so it stops pondering (if it was pondering). */
move_t m = move(pass, board_to_play(b)); bool print;
if (e->notify_play)
e->notify_play(e, b, &m, "", &print);
/* Wait for non-undo command to reset engine. */
gtp->undo_pending = true;
return P_OK;
}
static void
undo_reload_engine(gtp_t *gtp, board_t *b, engine_t *e, time_info_t *ti)
{
if (DEBUGL(3)) fprintf(stderr, "reloading engine after undo(s).\n");
gtp->undo_pending = false;
gtp_reset_engine(gtp, b, e, ti);
/* Reset board */
int handicap = b->handicap;
b->move_history = NULL; /* Preserve history ! */
board_clear(b);
b->handicap = handicap;
move_history_t *h = >p->history;
for (int i = 0; i < h->moves; i++) {
bool print;
if (e->notify_play)
e->notify_play(e, b, &h->move[i], "", &print);
int r = board_play(b, &h->move[i]);
assert(r >= 0);
}
b->move_history = >p->history;
}
static enum parse_code
cmd_showboard(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
gtp_printf(gtp, "");
board_print(b, stdout);
gtp->flushed = 1; // already ends with \n\n
fflush(stdout);
return P_OK;
}
/* Custom commands for handling the tree opening tbook */
static enum parse_code
cmd_pachi_gentbook(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
/* Board must be initialized properly, as if for genmove;
* makes sense only as 'uct_gentbook b'. */
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
if (!uct_gentbook(e, b, &ti[color], color))
gtp_error(gtp, "error generating tbook");
return P_OK;
}
static enum parse_code
cmd_pachi_dumptbook(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
uct_dumptbook(e, b, color);
return P_OK;
}
static enum parse_code
cmd_pachi_evaluate(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *arg;
gtp_arg(arg);
enum stone color = str2stone(arg);
if (!e->evaluate) {
gtp_error(gtp, "pachi-evaluate not supported by engine");
} else {
floating_t vals[b->flen];
e->evaluate(e, b, &ti[color], vals, color);
for (int i = 0; i < b->flen; i++) {
if (isnan(vals[i]) || vals[i] < 0.001)
continue;
gtp_printf(gtp, "%s %.3f\n", coord2sstr(b->f[i]), (double) vals[i]);
}
}
return P_OK;
}
static enum parse_code
cmd_pachi_result(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
/* More detailed result of the last genmove. */
/* For UCT, the output format is: = color move playouts winrate dynkomi */
char *reply = (e->result ? e->result(e, b) : NULL);
if (reply) gtp_reply(gtp, reply);
else gtp_error(gtp, "unknown pachi-result command");
return P_OK;
}
static enum parse_code
cmd_pachi_tunit(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
int res = unit_test_cmd(b, gtp->next);
const char *str = (res ? "passed" : "failed");
gtp_reply(gtp, str);
return P_OK;
}
static enum parse_code
cmd_kgs_chat(board_t *b, engine_t *e, time_info_t *ti, gtp_t *gtp)
{
char *loc;
gtp_arg(loc);
bool opponent = !strcasecmp(loc, "game");
char *from;
gtp_arg(from);
char *msg = gtp->next;
msg += strspn(msg, " \n\t");
char *end = strchr(msg, '\n');
if (end) *end = '\0';
char *reply = (e->chat ? e->chat(e, b, opponent, from, msg) : NULL);
if (reply) gtp_reply(gtp, reply);
else gtp_error(gtp, "unknown kgs-chat command");
return P_OK;
}
static enum parse_code