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//-----------------------------------------------------------------------------
/** @file twogtp/TwoGtp.cpp
@author Markus Enzenberger
@copyright GNU General Public License version 3 or later */
//-----------------------------------------------------------------------------
#include "TwoGtp.h"
#include "libboardgame_base/Log.h"
#include "libboardgame_base/Writer.h"
#include "libpentobi_base/ScoreUtil.h"
using libboardgame_base::Writer;
using libpentobi_base::get_multiplayer_result;
using libpentobi_base::Move;
using libpentobi_base::ScoreType;
//-----------------------------------------------------------------------------
TwoGtp::TwoGtp(const string& black, const string& white, Variant variant,
unsigned nu_games, Output& output, bool quiet,
const string& log_prefix, bool fast_open)
: m_quiet(quiet),
m_fast_open(fast_open),
m_variant(variant),
m_nu_games(nu_games),
m_bd(variant),
m_output(output),
m_black(black),
m_white(white)
{
if (! m_quiet)
{
m_black.enable_log(log_prefix + "B");
m_white.enable_log(log_prefix + "W");
}
if (get_nu_colors(m_variant) == 2)
{
m_colors[0] = "b";
m_colors[1] = "w";
}
else
{
m_colors[0] = "1";
m_colors[1] = "2";
m_colors[2] = "3";
m_colors[3] = "4";
}
}
float TwoGtp::get_result(unsigned player_black)
{
float result;
auto nu_players = m_bd.get_nu_players();
if (nu_players == 2)
{
auto score = m_bd.get_score_twoplayer(Color(0));
if (score > 0)
result = 1;
else if (score < 0 || (m_bd.get_break_ties() && score == 0))
result = 0;
else
result = 0.5;
if (player_black != 0)
result = 1 - result;
}
else
{
array<ScoreType, Color::range> points;
for (Color::IntType i = 0; i < m_bd.get_nu_colors(); ++i)
points[i] = m_bd.get_points(Color(i));
array<float, Color::range> player_result;
get_multiplayer_result(nu_players, points, player_result,
m_bd.get_break_ties());
result = player_result[player_black];
}
return result;
}
void TwoGtp::play_game(unsigned game_number)
{
if (! m_quiet)
LIBBOARDGAME_LOG("================================================\n"
"Game ", game_number, "\n"
"================================================");
m_bd.init();
send_both("clear_board");
auto cpu_black = send_cputime(m_black);
auto cpu_white = send_cputime(m_white);
unsigned nu_players = m_bd.get_nu_players();
unsigned player_black = game_number % nu_players;
bool resign = false;
ostringstream sgf_string;
Writer sgf(sgf_string);
sgf.set_indent(-1);
sgf.begin_tree();
sgf.begin_node();
sgf.write_property("GM", to_string(m_variant));
sgf.write_property("GN", game_number);
sgf.end_node();
array<bool, Board::max_moves> is_real_move;
unsigned player;
while (! m_bd.is_game_over())
{
auto to_play = m_bd.get_effective_to_play();
if (m_variant == Variant::classic_3 && to_play == Color(3))
player = m_bd.get_alt_player();
else
player = to_play.to_int() % nu_players;
auto& player_connection = (player == player_black ? m_black : m_white);
auto& other_connection = (player == player_black ? m_white : m_black);
auto color = m_colors[to_play.to_int()];
Move mv;
if (m_fast_open
&& m_output.generate_fast_open_move(player == player_black,
m_bd, to_play, mv))
{
is_real_move[m_bd.get_nu_moves()] = false;
LIBBOARDGAME_LOG("Playing fast opening move");
player_connection.send("play " + color + " " + m_bd.to_string(mv));
}
else
{
is_real_move[m_bd.get_nu_moves()] = true;
auto response = player_connection.send("genmove " + color);
if (response == "resign")
{
resign = true;
break;
}
if (! m_bd.from_string(mv, response))
throw runtime_error("invalid move");
}
sgf.begin_node();
sgf.write_property(string(1, static_cast<char>(toupper(color[0]))),
m_bd.to_string(mv));
sgf.end_node();
if (mv.is_null() || ! m_bd.is_legal(to_play, mv))
throw runtime_error("invalid move: " + m_bd.to_string(mv));
m_bd.play(to_play, mv);
other_connection.send("play " + color + " " + m_bd.to_string(mv));
}
cpu_black = send_cputime(m_black) - cpu_black;
cpu_white = send_cputime(m_white) - cpu_white;
float result;
if (resign)
{
if (nu_players > 2)
throw runtime_error("resign only allowed in two-player variants");
result = (player == player_black ? 0 : 1);
}
else
result = get_result(player_black);
sgf.end_tree();
sgf_string << '\n';
m_output.add_result(game_number, result, m_bd, player_black, cpu_black,
cpu_white, sgf_string.str(), is_real_move);
}
void TwoGtp::run()
{
send_both(string("set_game ") + to_string(m_variant));
while (! m_output.check_sentinel())
{
unsigned n = m_output.get_next();
if (n >= m_nu_games)
break;
play_game(n);
}
send_both("quit");
}
void TwoGtp::send_both(const string& cmd)
{
m_black.send(cmd);
m_white.send(cmd);
}
double TwoGtp::send_cputime(GtpConnection& gtp_connection)
{
string response = gtp_connection.send("cputime");
istringstream in(response);
double cputime;
in >> cputime;
if (! in)
throw runtime_error("invalid response to cputime: " + response);
return cputime;
}
//-----------------------------------------------------------------------------
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