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Chess: Gracefully handle ChessEngine disconnections

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The GUI now tracks when it becomes disconnected from ChessEngine.
If not currently waiting for a move from ChessEngine, it will
automatically reconnect on the next engine move. If a disconnection
occurs while waiting for a move, the player is asked whether they
want to try again or not.
This commit is contained in:
Tim Ledbetter 2023-04-02 21:14:16 +01:00 • committed by Sam Atkins
parent 55347ed6a5
commit 8b6c538f2a
4 changed files with 63 additions and 20 deletions
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38
Userland/Games/Chess/main.cpp
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@ -128,21 +128,31 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
GUI::ActionGroup engines_action_group;
engines_action_group.set_exclusive(true);
auto engine_submenu = TRY(engine_menu->try_add_submenu("&Engine"_short_string));
for (auto const& engine : { "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 == DeprecatedString("Human"))
action->set_checked(true);
auto human_engine_checkbox = GUI::Action::create_checkable("Human", [&](auto&) {
widget->set_engine(nullptr);
});
human_engine_checkbox->set_checked(true);
engines_action_group.add_action(human_engine_checkbox);
TRY(engine_submenu->try_add_action(human_engine_checkbox));
TRY(engine_submenu->try_add_action(*action));
}
auto action = GUI::Action::create_checkable("ChessEngine", [&](auto& action) {
auto new_engine = Engine::construct(action.text());
new_engine->on_connection_lost = [&]() {
if (!widget->want_engine_move())
return;
auto rc = GUI::MessageBox::show(window, "Connection to the chess engine was lost while waiting for a move. Do you want to try again?"sv, "Chess"sv, GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
if (rc == GUI::Dialog::ExecResult::Yes)
widget->input_engine_move();
else
human_engine_checkbox->activate();
};
widget->set_engine(move(new_engine));
widget->input_engine_move();
});
engines_action_group.add_action(*action);
TRY(engine_submenu->try_add_action(*action));
auto help_menu = TRY(window->try_add_menu("&Help"_short_string));
TRY(help_menu->try_add_action(GUI::CommonActions::make_command_palette_action(window)));