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Games: Move to Userland/Games/

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This commit is contained in:
Andreas Kling 2021-01-12 12:03:28 +01:00
parent b8d6a56fa3
commit aa939c4b4b
49 changed files with 1 additions and 1 deletions
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9
Userland/Games/Chess/CMakeLists.txt Normal file
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set(SOURCES
main.cpp
ChessWidget.cpp
PromotionDialog.cpp
Engine.cpp
)
serenity_app(Chess ICON app-chess)
target_link_libraries(Chess LibChess LibGUI LibCore)

659
Userland/Games/Chess/ChessWidget.cpp Normal file
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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ChessWidget.h"
#include "PromotionDialog.h"
#include <AK/String.h>
#include <LibCore/DateTime.h>
#include <LibCore/File.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Font.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/Path.h>
#include <unistd.h>
ChessWidget::ChessWidget(const StringView& set)
{
set_piece_set(set);
}
ChessWidget::ChessWidget()
: ChessWidget("stelar7")
{
}
ChessWidget::~ChessWidget()
{
}
void ChessWidget::paint_event(GUI::PaintEvent& event)
{
GUI::Widget::paint_event(event);
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
size_t tile_width = width() / 8;
size_t tile_height = height() / 8;
unsigned coord_rank_file = (side() == Chess::Color::White) ? 0 : 7;
Chess::Board& active_board = (m_playback ? board_playback() : board());
Chess::Square::for_each([&](Chess::Square sq) {
Gfx::IntRect tile_rect;
if (side() == Chess::Color::White) {
tile_rect = { sq.file * tile_width, (7 - sq.rank) * tile_height, tile_width, tile_height };
} else {
tile_rect = { (7 - sq.file) * tile_width, sq.rank * tile_height, tile_width, tile_height };
}
painter.fill_rect(tile_rect, (sq.is_light()) ? board_theme().light_square_color : board_theme().dark_square_color);
if (active_board.last_move().has_value() && (active_board.last_move().value().to == sq || active_board.last_move().value().from == sq)) {
painter.fill_rect(tile_rect, m_move_highlight_color);
}
if (m_coordinates) {
auto coord = sq.to_algebraic();
auto text_color = (sq.is_light()) ? board_theme().dark_square_color : board_theme().light_square_color;
auto shrunken_rect = tile_rect;
shrunken_rect.shrink(4, 4);
if (sq.rank == coord_rank_file)
painter.draw_text(shrunken_rect, coord.substring_view(0, 1), Gfx::FontDatabase::default_bold_font(), Gfx::TextAlignment::BottomRight, text_color);
if (sq.file == coord_rank_file)
painter.draw_text(shrunken_rect, coord.substring_view(1, 1), Gfx::FontDatabase::default_bold_font(), Gfx::TextAlignment::TopLeft, text_color);
}
for (auto& m : m_board_markings) {
if (m.type() == BoardMarking::Type::Square && m.from == sq) {
Gfx::Color color = m.secondary_color ? m_marking_secondary_color : (m.alternate_color ? m_marking_alternate_color : m_marking_primary_color);
painter.fill_rect(tile_rect, color);
}
}
if (!(m_dragging_piece && sq == m_moving_square)) {
auto bmp = m_pieces.get(active_board.get_piece(sq));
if (bmp.has_value()) {
painter.draw_scaled_bitmap(tile_rect, *bmp.value(), bmp.value()->rect());
}
}
return IterationDecision::Continue;
});
auto draw_arrow = [&painter](Gfx::FloatPoint A, Gfx::FloatPoint B, float w1, float w2, float h, Gfx::Color color) {
float dx = B.x() - A.x();
float dy = A.y() - B.y();
float phi = atan2f(dy, dx);
float hdx = h * cos(phi);
float hdy = h * sin(phi);
Gfx::FloatPoint A1(A.x() - (w1 / 2) * cos(M_PI_2 - phi), A.y() - (w1 / 2) * sin(M_PI_2 - phi));
Gfx::FloatPoint B3(A.x() + (w1 / 2) * cos(M_PI_2 - phi), A.y() + (w1 / 2) * sin(M_PI_2 - phi));
Gfx::FloatPoint A2(A1.x() + (dx - hdx), A1.y() - (dy - hdy));
Gfx::FloatPoint B2(B3.x() + (dx - hdx), B3.y() - (dy - hdy));
Gfx::FloatPoint A3(A2.x() - w2 * cos(M_PI_2 - phi), A2.y() - w2 * sin(M_PI_2 - phi));
Gfx::FloatPoint B1(B2.x() + w2 * cos(M_PI_2 - phi), B2.y() + w2 * sin(M_PI_2 - phi));
auto path = Gfx::Path();
path.move_to(A);
path.line_to(A1);
path.line_to(A2);
path.line_to(A3);
path.line_to(B);
path.line_to(B1);
path.line_to(B2);
path.line_to(B3);
path.line_to(A);
path.close();
painter.fill_path(path, color, Gfx::Painter::WindingRule::EvenOdd);
};
for (auto& m : m_board_markings) {
if (m.type() == BoardMarking::Type::Arrow) {
Gfx::FloatPoint arrow_start;
Gfx::FloatPoint arrow_end;
if (side() == Chess::Color::White) {
arrow_start = { m.from.file * tile_width + tile_width / 2.0f, (7 - m.from.rank) * tile_height + tile_height / 2.0f };
arrow_end = { m.to.file * tile_width + tile_width / 2.0f, (7 - m.to.rank) * tile_height + tile_height / 2.0f };
} else {
arrow_start = { (7 - m.from.file) * tile_width + tile_width / 2.0f, m.from.rank * tile_height + tile_height / 2.0f };
arrow_end = { (7 - m.to.file) * tile_width + tile_width / 2.0f, m.to.rank * tile_height + tile_height / 2.0f };
}
Gfx::Color color = m.secondary_color ? m_marking_secondary_color : (m.alternate_color ? m_marking_primary_color : m_marking_alternate_color);
draw_arrow(arrow_start, arrow_end, tile_width / 8.0f, tile_width / 10.0f, tile_height / 2.5f, color);
}
}
if (m_dragging_piece) {
auto bmp = m_pieces.get(active_board.get_piece(m_moving_square));
if (bmp.has_value()) {
auto center = m_drag_point - Gfx::IntPoint(tile_width / 2, tile_height / 2);
painter.draw_scaled_bitmap({ center, { tile_width, tile_height } }, *bmp.value(), bmp.value()->rect());
}
}
}
void ChessWidget::mousedown_event(GUI::MouseEvent& event)
{
GUI::Widget::mousedown_event(event);
if (event.button() == GUI::MouseButton::Right) {
m_current_marking.from = mouse_to_square(event);
return;
}
m_board_markings.clear();
auto square = mouse_to_square(event);
auto piece = board().get_piece(square);
if (drag_enabled() && piece.color == board().turn() && !m_playback) {
m_dragging_piece = true;
m_drag_point = event.position();
m_moving_square = square;
}
update();
}
void ChessWidget::mouseup_event(GUI::MouseEvent& event)
{
GUI::Widget::mouseup_event(event);
if (event.button() == GUI::MouseButton::Right) {
m_current_marking.secondary_color = event.shift();
m_current_marking.alternate_color = event.ctrl();
m_current_marking.to = mouse_to_square(event);
auto match_index = m_board_markings.find_first_index(m_current_marking);
if (match_index.has_value()) {
m_board_markings.remove(match_index.value());
update();
return;
}
m_board_markings.append(m_current_marking);
update();
return;
}
if (!m_dragging_piece)
return;
m_dragging_piece = false;
auto target_square = mouse_to_square(event);
Chess::Move move = { m_moving_square, target_square };
if (board().is_promotion_move(move)) {
auto promotion_dialog = PromotionDialog::construct(*this);
if (promotion_dialog->exec() == PromotionDialog::ExecOK)
move.promote_to = promotion_dialog->selected_piece();
}
if (board().apply_move(move)) {
m_playback_move_number = board().moves().size();
m_playback = false;
m_board_playback = m_board;
if (board().game_result() != Chess::Board::Result::NotFinished) {
bool over = true;
String msg;
switch (board().game_result()) {
case Chess::Board::Result::CheckMate:
if (board().turn() == Chess::Color::White) {
msg = "Black wins by Checkmate.";
} else {
msg = "White wins by Checkmate.";
}
break;
case Chess::Board::Result::StaleMate:
msg = "Draw by Stalemate.";
break;
case Chess::Board::Result::FiftyMoveRule:
update();
if (GUI::MessageBox::show(window(), "50 moves have elapsed without a capture. Claim Draw?", "Claim Draw?",
GUI::MessageBox::Type::Information, GUI::MessageBox::InputType::YesNo)
== GUI::Dialog::ExecYes) {
msg = "Draw by 50 move rule.";
} else {
over = false;
}
break;
case Chess::Board::Result::SeventyFiveMoveRule:
msg = "Draw by 75 move rule.";
break;
case Chess::Board::Result::ThreeFoldRepetition:
update();
if (GUI::MessageBox::show(window(), "The same board state has repeated three times. Claim Draw?", "Claim Draw?",
GUI::MessageBox::Type::Information, GUI::MessageBox::InputType::YesNo)
== GUI::Dialog::ExecYes) {
msg = "Draw by threefold repetition.";
} else {
over = false;
}
break;
case Chess::Board::Result::FiveFoldRepetition:
msg = "Draw by fivefold repetition.";
break;
case Chess::Board::Result::InsufficientMaterial:
msg = "Draw by insufficient material.";
break;
default:
ASSERT_NOT_REACHED();
}
if (over) {
set_drag_enabled(false);
update();
GUI::MessageBox::show(window(), msg, "Game Over", GUI::MessageBox::Type::Information);
}
} else {
input_engine_move();
}
}
update();
}
void ChessWidget::mousemove_event(GUI::MouseEvent& event)
{
GUI::Widget::mousemove_event(event);
if (!m_dragging_piece)
return;
m_drag_point = event.position();
update();
}
void ChessWidget::keydown_event(GUI::KeyEvent& event)
{
switch (event.key()) {
case KeyCode::Key_Left:
playback_move(PlaybackDirection::Backward);
break;
case KeyCode::Key_Right:
playback_move(PlaybackDirection::Forward);
break;
case KeyCode::Key_Up:
playback_move(PlaybackDirection::Last);
break;
case KeyCode::Key_Down:
playback_move(PlaybackDirection::First);
break;
case KeyCode::Key_Home:
playback_move(PlaybackDirection::First);
break;
case KeyCode::Key_End:
playback_move(PlaybackDirection::Last);
break;
default:
return;
}
update();
}
static String set_path = String("/res/icons/chess/sets/");
static RefPtr<Gfx::Bitmap> get_piece(const StringView& set, const StringView& image)
{
StringBuilder builder;
builder.append(set_path);
builder.append(set);
builder.append('/');
builder.append(image);
return Gfx::Bitmap::load_from_file(builder.build());
}
void ChessWidget::set_piece_set(const StringView& set)
{
m_piece_set = set;
m_pieces.set({ Chess::Color::White, Chess::Type::Pawn }, get_piece(set, "white-pawn.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::Pawn }, get_piece(set, "black-pawn.png"));
m_pieces.set({ Chess::Color::White, Chess::Type::Knight }, get_piece(set, "white-knight.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::Knight }, get_piece(set, "black-knight.png"));
m_pieces.set({ Chess::Color::White, Chess::Type::Bishop }, get_piece(set, "white-bishop.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::Bishop }, get_piece(set, "black-bishop.png"));
m_pieces.set({ Chess::Color::White, Chess::Type::Rook }, get_piece(set, "white-rook.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::Rook }, get_piece(set, "black-rook.png"));
m_pieces.set({ Chess::Color::White, Chess::Type::Queen }, get_piece(set, "white-queen.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::Queen }, get_piece(set, "black-queen.png"));
m_pieces.set({ Chess::Color::White, Chess::Type::King }, get_piece(set, "white-king.png"));
m_pieces.set({ Chess::Color::Black, Chess::Type::King }, get_piece(set, "black-king.png"));
}
Chess::Square ChessWidget::mouse_to_square(GUI::MouseEvent& event) const
{
size_t tile_width = width() / 8;
size_t tile_height = height() / 8;
if (side() == Chess::Color::White) {
return { 7 - (event.y() / tile_height), event.x() / tile_width };
} else {
return { event.y() / tile_height, 7 - (event.x() / tile_width) };
}
}
RefPtr<Gfx::Bitmap> ChessWidget::get_piece_graphic(const Chess::Piece& piece) const
{
return m_pieces.get(piece).value();
}
void ChessWidget::reset()
{
m_board_markings.clear();
m_playback = false;
m_playback_move_number = 0;
m_board_playback = Chess::Board();
m_board = Chess::Board();
m_side = (arc4random() % 2) ? Chess::Color::White : Chess::Color::Black;
m_drag_enabled = true;
input_engine_move();
update();
}
void ChessWidget::set_board_theme(const StringView& name)
{
// FIXME: Add some kind of themes.json
// The following Colors have been taken from lichess.org, but i'm pretty sure they took them from chess.com.
if (name == "Beige") {
m_board_theme = { "Beige", Color::from_rgb(0xb58863), Color::from_rgb(0xf0d9b5) };
} else if (name == "Green") {
m_board_theme = { "Green", Color::from_rgb(0x86a666), Color::from_rgb(0xffffdd) };
} else if (name == "Blue") {
m_board_theme = { "Blue", Color::from_rgb(0x8ca2ad), Color::from_rgb(0xdee3e6) };
} else {
set_board_theme("Beige");
}
}
bool ChessWidget::want_engine_move()
{
if (!m_engine)
return false;
if (board().turn() == side())
return false;
return true;
}
void ChessWidget::input_engine_move()
{
if (!want_engine_move())
return;
bool drag_was_enabled = drag_enabled();
if (drag_was_enabled)
set_drag_enabled(false);
set_override_cursor(Gfx::StandardCursor::Wait);
m_engine->get_best_move(board(), 4000, [this, drag_was_enabled](Chess::Move move) {
set_override_cursor(Gfx::StandardCursor::None);
if (!want_engine_move())
return;
set_drag_enabled(drag_was_enabled);
ASSERT(board().apply_move(move));
m_playback_move_number = m_board.moves().size();
m_playback = false;
m_board_markings.clear();
update();
});
}
void ChessWidget::playback_move(PlaybackDirection direction)
{
if (m_board.moves().is_empty())
return;
m_playback = true;
m_board_markings.clear();
switch (direction) {
case PlaybackDirection::Backward:
if (m_playback_move_number == 0)
return;
m_board_playback = Chess::Board();
for (size_t i = 0; i < m_playback_move_number - 1; i++)
m_board_playback.apply_move(m_board.moves().at(i));
m_playback_move_number--;
break;
case PlaybackDirection::Forward:
if (m_playback_move_number + 1 > m_board.moves().size()) {
m_playback = false;
return;
}
m_board_playback.apply_move(m_board.moves().at(m_playback_move_number++));
if (m_playback_move_number == m_board.moves().size())
m_playback = false;
break;
case PlaybackDirection::First:
m_board_playback = Chess::Board();
m_playback_move_number = 0;
break;
case PlaybackDirection::Last:
while (m_playback) {
playback_move(PlaybackDirection::Forward);
}
break;
default:
ASSERT_NOT_REACHED();
}
update();
}
String ChessWidget::get_fen() const
{
return m_playback ? m_board_playback.to_fen() : m_board.to_fen();
}
bool ChessWidget::import_pgn(const StringView& import_path)
{
auto file_or_error = Core::File::open(import_path, Core::File::OpenMode::ReadOnly);
if (file_or_error.is_error()) {
warnln("Couldn't open '{}': {}", import_path, file_or_error.error());
return false;
}
auto& file = *file_or_error.value();
m_board = Chess::Board();
ByteBuffer bytes = file.read_all();
StringView content = bytes;
auto lines = content.lines();
StringView line;
size_t i = 0;
// Tag Pair Section
// FIXME: Parse these tags when they become relevant
do {
line = lines.at(i++);
} while (!line.is_empty() || i >= lines.size());
// Movetext Section
bool skip = false;
bool recursive_annotation = false;
bool future_expansion = false;
Chess::Color turn = Chess::Color::White;
String movetext;
for (size_t j = i; j < lines.size(); j++)
movetext = String::formatted("{}{}", movetext, lines.at(i).to_string());
for (auto token : movetext.split(' ')) {
token = token.trim_whitespace();
// FIXME: Parse all of these tokens when we start caring about them
if (token.ends_with("}")) {
skip = false;
continue;
}
if (skip)
continue;
if (token.starts_with("{")) {
if (token.ends_with("}"))
continue;
skip = true;
continue;
}
if (token.ends_with(")")) {
recursive_annotation = false;
continue;
}
if (recursive_annotation)
continue;
if (token.starts_with("(")) {
if (token.ends_with(")"))
continue;
recursive_annotation = true;
continue;
}
if (token.ends_with(">")) {
future_expansion = false;
continue;
}
if (future_expansion)
continue;
if (token.starts_with("<")) {
if (token.ends_with(">"))
continue;
future_expansion = true;
continue;
}
if (token.starts_with("$"))
continue;
if (token.contains("*"))
break;
// FIXME: When we become able to set more of the game state, fix these end results
if (token.contains("1-0")) {
m_board.set_resigned(Chess::Color::Black);
break;
}
if (token.contains("0-1")) {
m_board.set_resigned(Chess::Color::White);
break;
}
if (token.contains("1/2-1/2")) {
break;
}
if (!token.ends_with(".")) {
m_board.apply_move(Chess::Move::from_algebraic(token, turn, m_board));
turn = Chess::opposing_color(turn);
}
}
m_board_markings.clear();
m_board_playback = m_board;
m_playback_move_number = m_board_playback.moves().size();
m_playback = true;
update();
file.close();
return true;
}
bool ChessWidget::export_pgn(const StringView& export_path) const
{
auto file_or_error = Core::File::open(export_path, Core::File::WriteOnly);
if (file_or_error.is_error()) {
warnln("Couldn't open '{}': {}", export_path, file_or_error.error());
return false;
}
auto& file = *file_or_error.value();
// Tag Pair Section
file.write("[Event \"Casual Game\"]\n");
file.write("[Site \"SerenityOS Chess\"]\n");
file.write(String::formatted("[Date \"{}\"]\n", Core::DateTime::now().to_string("%Y.%m.%d")));
file.write("[Round \"1\"]\n");
String username(getlogin());
const String player1 = (!username.is_empty() ? username : "?");
const String player2 = (!m_engine.is_null() ? "SerenityOS ChessEngine" : "?");
file.write(String::formatted("[White \"{}\"]\n", m_side == Chess::Color::White ? player1 : player2));
file.write(String::formatted("[Black \"{}\"]\n", m_side == Chess::Color::Black ? player1 : player2));
file.write(String::formatted("[Result \"{}\"]\n", Chess::Board::result_to_points(m_board.game_result(), m_board.turn())));
file.write("[WhiteElo \"?\"]\n");
file.write("[BlackElo \"?\"]\n");
file.write("[Variant \"Standard\"]\n");
file.write("[TimeControl \"-\"]\n");
file.write("[Annotator \"SerenityOS Chess\"]\n");
file.write("\n");
// Movetext Section
for (size_t i = 0, move_no = 1; i < m_board.moves().size(); i += 2, move_no++) {
const String white = m_board.moves().at(i).to_algebraic();
if (i + 1 < m_board.moves().size()) {
const String black = m_board.moves().at(i + 1).to_algebraic();
file.write(String::formatted("{}. {} {} ", move_no, white, black));
} else {
file.write(String::formatted("{}. {} ", move_no, white));
}
}
file.write("{ ");
file.write(Chess::Board::result_to_string(m_board.game_result(), m_board.turn()));
file.write(" } ");
file.write(Chess::Board::result_to_points(m_board.game_result(), m_board.turn()));
file.write("\n");
file.close();
return true;
}
void ChessWidget::flip_board()
{
if (want_engine_move()) {
GUI::MessageBox::show(window(), "You can only flip the board on your turn.", "Flip Board", GUI::MessageBox::Type::Information);
return;
}
m_side = Chess::opposing_color(m_side);
input_engine_move();
update();
}
int ChessWidget::resign()
{
if (want_engine_move()) {
GUI::MessageBox::show(window(), "You can only resign on your turn.", "Resign", GUI::MessageBox::Type::Information);
return -1;
}
auto result = GUI::MessageBox::show(window(), "Are you sure you wish to resign?", "Resign", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNo);
if (result != GUI::MessageBox::ExecYes)
return -1;
board().set_resigned(m_board.turn());
set_drag_enabled(false);
update();
const String msg = Chess::Board::result_to_string(m_board.game_result(), m_board.turn());
GUI::MessageBox::show(window(), msg, "Game Over", GUI::MessageBox::Type::Information);
return 0;
}

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Userland/Games/Chess/ChessWidget.h Normal file
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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Engine.h"
#include <AK/HashMap.h>
#include <AK/NonnullRefPtr.h>
#include <AK/Optional.h>
#include <AK/StringView.h>
#include <LibChess/Chess.h>
#include <LibGUI/Widget.h>
#include <LibGfx/Bitmap.h>
class ChessWidget final : public GUI::Widget {
C_OBJECT(ChessWidget)
public:
ChessWidget();
ChessWidget(const StringView& set);
virtual ~ChessWidget() override;
virtual void paint_event(GUI::PaintEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
Chess::Board& board() { return m_board; };
const Chess::Board& board() const { return m_board; };
Chess::Board& board_playback() { return m_board_playback; };
const Chess::Board& board_playback() const { return m_board_playback; };
Chess::Color side() const { return m_side; };
void set_side(Chess::Color side) { m_side = side; };
void set_piece_set(const StringView& set);
const String& piece_set() const { return m_piece_set; };
Chess::Square mouse_to_square(GUI::MouseEvent& event) const;
bool drag_enabled() const { return m_drag_enabled; }
void set_drag_enabled(bool e) { m_drag_enabled = e; }
RefPtr<Gfx::Bitmap> get_piece_graphic(const Chess::Piece& piece) const;
String get_fen() const;
bool import_pgn(const StringView& import_path);
bool export_pgn(const StringView& export_path) const;
int resign();
void flip_board();
void reset();
struct BoardTheme {
String name;
Color dark_square_color;
Color light_square_color;
};
const BoardTheme& board_theme() const { return m_board_theme; }
void set_board_theme(const BoardTheme& theme) { m_board_theme = theme; }
void set_board_theme(const StringView& name);
enum class PlaybackDirection {
First,
Backward,
Forward,
Last
};
void playback_move(PlaybackDirection);
void set_engine(RefPtr<Engine> engine) { m_engine = engine; }
void input_engine_move();
bool want_engine_move();
void set_coordinates(bool coordinates) { m_coordinates = coordinates; }
bool coordinates() const { return m_coordinates; }
struct BoardMarking {
Chess::Square from { 50, 50 };
Chess::Square to { 50, 50 };
bool alternate_color { false };
bool secondary_color { false };
enum class Type {
Square,
Arrow,
None
};
Type type() const
{
if (from.in_bounds() && to.in_bounds() && from != to)
return Type::Arrow;
else if ((from.in_bounds() && !to.in_bounds()) || (from.in_bounds() && to.in_bounds() && from == to))
return Type::Square;
return Type::None;
}
bool operator==(const BoardMarking& other) const { return from == other.from && to == other.to; }
};
private:
Chess::Board m_board;
Chess::Board m_board_playback;
bool m_playback { false };
size_t m_playback_move_number { 0 };
BoardMarking m_current_marking;
Vector<BoardMarking> m_board_markings;
BoardTheme m_board_theme { "Beige", Color::from_rgb(0xb58863), Color::from_rgb(0xf0d9b5) };
Color m_move_highlight_color { Color::from_rgba(0x66ccee00) };
Color m_marking_primary_color { Color::from_rgba(0x66ff0000) };
Color m_marking_alternate_color { Color::from_rgba(0x66ffaa00) };
Color m_marking_secondary_color { Color::from_rgba(0x6655dd55) };
Chess::Color m_side { Chess::Color::White };
HashMap<Chess::Piece, RefPtr<Gfx::Bitmap>> m_pieces;
String m_piece_set;
Chess::Square m_moving_square { 50, 50 };
Gfx::IntPoint m_drag_point;
bool m_dragging_piece { false };
bool m_drag_enabled { true };
RefPtr<Engine> m_engine;
bool m_coordinates { true };
};

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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Engine.h"
#include <LibCore/File.h>
#include <fcntl.h>
#include <spawn.h>
#include <stdio.h>
#include <stdlib.h>
Engine::~Engine()
{
if (m_pid != -1)
kill(m_pid, SIGINT);
}
Engine::Engine(const StringView& command)
{
int wpipefds[2];
int rpipefds[2];
if (pipe2(wpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
ASSERT_NOT_REACHED();
}
if (pipe2(rpipefds, O_CLOEXEC) < 0) {
perror("pipe2");
ASSERT_NOT_REACHED();
}
posix_spawn_file_actions_t file_actions;
posix_spawn_file_actions_init(&file_actions);
posix_spawn_file_actions_adddup2(&file_actions, wpipefds[0], STDIN_FILENO);
posix_spawn_file_actions_adddup2(&file_actions, rpipefds[1], STDOUT_FILENO);
String cstr(command);
const char* argv[] = { cstr.characters(), nullptr };
if (posix_spawnp(&m_pid, cstr.characters(), &file_actions, nullptr, const_cast<char**>(argv), environ) < 0) {
perror("posix_spawnp");
ASSERT_NOT_REACHED();
}
posix_spawn_file_actions_destroy(&file_actions);
close(wpipefds[0]);
close(rpipefds[1]);
auto infile = Core::File::construct();
infile->open(rpipefds[0], Core::IODevice::ReadOnly, Core::File::ShouldCloseFileDescriptor::Yes);
set_in(infile);
auto outfile = Core::File::construct();
outfile->open(wpipefds[1], Core::IODevice::WriteOnly, Core::File::ShouldCloseFileDescriptor::Yes);
set_out(outfile);
send_command(Chess::UCI::UCICommand());
}
void Engine::handle_bestmove(const Chess::UCI::BestMoveCommand& command)
{
if (m_bestmove_callback)
m_bestmove_callback(command.move());
m_bestmove_callback = nullptr;
}

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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Function.h>
#include <LibChess/UCIEndpoint.h>
#include <sys/types.h>
class Engine : public Chess::UCI::Endpoint {
C_OBJECT(Engine)
public:
virtual ~Engine() override;
Engine(const StringView& command);
Engine(const Engine&) = delete;
Engine& operator=(const Engine&) = delete;
virtual void handle_bestmove(const Chess::UCI::BestMoveCommand&);
template<typename Callback>
void get_best_move(const Chess::Board& board, int time_limit, Callback&& callback)
{
send_command(Chess::UCI::PositionCommand({}, board.moves()));
Chess::UCI::GoCommand go_command;
go_command.movetime = time_limit;
send_command(go_command);
m_bestmove_callback = move(callback);
}
private:
Function<void(Chess::Move)> m_bestmove_callback;
pid_t m_pid { -1 };
};

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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "PromotionDialog.h"
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/Frame.h>
PromotionDialog::PromotionDialog(ChessWidget& chess_widget)
: Dialog(chess_widget.window())
, m_selected_piece(Chess::Type::None)
{
set_title("Choose piece to promote to");
set_icon(chess_widget.window()->icon());
resize(70 * 4, 70);
auto& main_widget = set_main_widget<GUI::Frame>();
main_widget.set_frame_shape(Gfx::FrameShape::Container);
main_widget.set_fill_with_background_color(true);
main_widget.set_layout<GUI::HorizontalBoxLayout>();
for (auto& type : Vector({ Chess::Type::Queen, Chess::Type::Knight, Chess::Type::Rook, Chess::Type::Bishop })) {
auto& button = main_widget.add<GUI::Button>("");
button.set_fixed_height(70);
button.set_icon(chess_widget.get_piece_graphic({ chess_widget.board().turn(), type }));
button.on_click = [this, type](auto) {
m_selected_piece = type;
done(ExecOK);
};
}
}
void PromotionDialog::event(Core::Event& event)
{
Dialog::event(event);
}

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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ChessWidget.h"
#include <LibGUI/Dialog.h>
class PromotionDialog final : public GUI::Dialog {
C_OBJECT(PromotionDialog)
public:
Chess::Type selected_piece() const { return m_selected_piece; }
private:
explicit PromotionDialog(ChessWidget& chess_widget);
virtual void event(Core::Event&) override;
Chess::Type m_selected_piece;
};

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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ChessWidget.h"
#include <LibCore/ConfigFile.h>
#include <LibCore/DirIterator.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Application.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Window.h>
int main(int argc, char** argv)
{
auto app = GUI::Application::construct(argc, argv);
auto app_icon = GUI::Icon::default_icon("app-chess");
auto window = GUI::Window::construct();
auto& widget = window->set_main_widget<ChessWidget>();
RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Chess");
if (pledge("stdio rpath accept wpath cpath shared_buffer proc exec", nullptr) < 0) {
perror("pledge");
return 1;
}
if (unveil("/res", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil(config->file_name().characters(), "crw") < 0) {
perror("unveil");
return 1;
}
if (unveil("/bin/ChessEngine", "x") < 0) {
perror("unveil");
return 1;
}
if (unveil("/etc/passwd", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil(Core::StandardPaths::home_directory().characters(), "wcbr") < 0) {
perror("unveil");
return 1;
}
if (unveil(nullptr, nullptr) < 0) {
perror("unveil");
return 1;
}
auto size = config->read_num_entry("Display", "size", 512);
window->set_title("Chess");
window->resize(size, size);
window->set_size_increment({ 8, 8 });
window->set_resize_aspect_ratio(1, 1);
window->set_icon(app_icon.bitmap_for_size(16));
widget.set_piece_set(config->read_entry("Style", "PieceSet", "stelar7"));
widget.set_board_theme(config->read_entry("Style", "BoardTheme", "Beige"));
widget.set_coordinates(config->read_bool_entry("Style", "Coordinates", true));
auto menubar = GUI::MenuBar::construct();
auto& app_menu = menubar->add_menu("Chess");
app_menu.add_action(GUI::Action::create("Resign", { Mod_None, Key_F3 }, [&](auto&) {
widget.resign();
}));
app_menu.add_action(GUI::Action::create("Flip Board", { Mod_Ctrl, Key_F }, [&](auto&) {
widget.flip_board();
}));
app_menu.add_separator();
app_menu.add_action(GUI::Action::create("Import PGN...", { Mod_Ctrl, Key_O }, [&](auto&) {
Optional<String> import_path = GUI::FilePicker::get_open_filepath(window);
if (!import_path.has_value())
return;
if (!widget.import_pgn(import_path.value())) {
GUI::MessageBox::show(window, "Unable to import game.\n", "Error", GUI::MessageBox::Type::Error);
return;
}
dbgln("Imported PGN file from {}", import_path.value());
}));
app_menu.add_action(GUI::Action::create("Export PGN...", { Mod_Ctrl, Key_S }, [&](auto&) {
Optional<String> export_path = GUI::FilePicker::get_save_filepath(window, "Untitled", "pgn");
if (!export_path.has_value())
return;
if (!widget.export_pgn(export_path.value())) {
GUI::MessageBox::show(window, "Unable to export game.\n", "Error", GUI::MessageBox::Type::Error);
return;
}
dbgln("Exported PGN file to {}", export_path.value());
}));
app_menu.add_action(GUI::Action::create("Copy FEN", { Mod_Ctrl, Key_C }, [&](auto&) {
GUI::Clipboard::the().set_data(widget.get_fen().bytes());
GUI::MessageBox::show(window, "Board state copied to clipboard as FEN.", "Copy FEN", GUI::MessageBox::Type::Information);
}));
app_menu.add_separator();
app_menu.add_action(GUI::Action::create("New game", { Mod_None, Key_F2 }, [&](auto&) {
if (widget.board().game_result() == Chess::Board::Result::NotFinished) {
if (widget.resign() < 0)
return;
}
widget.reset();
}));
app_menu.add_separator();
app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
GUI::Application::the()->quit();
}));
auto& style_menu = menubar->add_menu("Style");
GUI::ActionGroup piece_set_action_group;
piece_set_action_group.set_exclusive(true);
auto& piece_set_menu = style_menu.add_submenu("Piece Set");
piece_set_menu.set_icon(app_icon.bitmap_for_size(16));
Core::DirIterator di("/res/icons/chess/sets/", Core::DirIterator::SkipParentAndBaseDir);
while (di.has_next()) {
auto set = di.next_path();
auto action = GUI::Action::create_checkable(set, [&](auto& action) {
widget.set_piece_set(action.text());
widget.update();
config->write_entry("Style", "PieceSet", action.text());
config->sync();
});
piece_set_action_group.add_action(*action);
if (widget.piece_set() == set)
action->set_checked(true);
piece_set_menu.add_action(*action);
}
GUI::ActionGroup board_theme_action_group;
board_theme_action_group.set_exclusive(true);
auto& board_theme_menu = style_menu.add_submenu("Board Theme");
board_theme_menu.set_icon(Gfx::Bitmap::load_from_file("/res/icons/chess/mini-board.png"));
for (auto& theme : Vector({ "Beige", "Green", "Blue" })) {
auto action = GUI::Action::create_checkable(theme, [&](auto& action) {
widget.set_board_theme(action.text());
widget.update();
config->write_entry("Style", "BoardTheme", action.text());
config->sync();
});
board_theme_action_group.add_action(*action);
if (widget.board_theme().name == theme)
action->set_checked(true);
board_theme_menu.add_action(*action);
}
auto coordinates_action = GUI::Action::create_checkable("Coordinates", [&](auto& action) {
widget.set_coordinates(action.is_checked());
widget.update();
config->write_bool_entry("Style", "Coordinates", action.is_checked());
config->sync();
});
coordinates_action->set_checked(widget.coordinates());
style_menu.add_action(coordinates_action);
auto& engine_menu = menubar->add_menu("Engine");
GUI::ActionGroup engines_action_group;
engines_action_group.set_exclusive(true);
auto& engine_submenu = engine_menu.add_submenu("Engine");
for (auto& engine : Vector({ "Human", "ChessEngine" })) {
auto action = GUI::Action::create_checkable(engine, [&](auto& action) {
if (action.text() == "Human") {
widget.set_engine(nullptr);
} else {
widget.set_engine(Engine::construct(action.text()));
widget.input_engine_move();
}
});
engines_action_group.add_action(*action);
if (engine == String("Human"))
action->set_checked(true);
engine_submenu.add_action(*action);
}
auto& help_menu = menubar->add_menu("Help");
help_menu.add_action(GUI::CommonActions::make_about_action("Chess", app_icon, window));
app->set_menubar(move(menubar));
window->show();
widget.reset();
return app->exec();
}