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2048: Disable the undo and redo actions when unavailable

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This change also ensures that the redo stack is cleared when a move is
made, so that it isn't possible to redo a previous move after having
made a new one.
This commit is contained in:
Tim Ledbetter 2023-09-13 01:13:17 +01:00 committed by Andreas Kling
parent c3e6077cfc
commit 871f5ba431
Notes: sideshowbarker 2024-07-18 02:13:10 +09:00 
Author: https://github.com/tcl3
Commit: https://github.com/SerenityOS/serenity/commit/871f5ba431
Pull-request: https://github.com/SerenityOS/serenity/pull/21053
1 changed files with 34 additions and 15 deletions
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49
Userland/Games/2048/main.cpp
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@ -93,6 +93,31 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
Vector<Game> undo_stack;
Vector<Game> redo_stack;
RefPtr<GUI::Action> undo_action;
RefPtr<GUI::Action> redo_action;
undo_action = GUI::CommonActions::make_undo_action([&](auto& action) {
redo_stack.append(game);
redo_action->set_enabled(true);
game = undo_stack.take_last();
if (undo_stack.is_empty())
action.set_enabled(false);
update();
});
undo_action->set_enabled(false);
redo_action = GUI::CommonActions::make_redo_action([&](auto& action) {
undo_stack.append(game);
undo_action->set_enabled(true);
game = redo_stack.take_last();
if (redo_stack.is_empty())
action.set_enabled(false);
update();
});
redo_action->set_enabled(false);
auto change_settings = [&] {
auto size_dialog = GameSizeDialog::construct(window, board_size, target_tile, evil_ai);
if (size_dialog->exec() != GUI::Dialog::ExecResult::OK)
@ -118,6 +143,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
// Do not leak game states between games.
undo_stack.clear();
redo_stack.clear();
undo_action->set_enabled(false);
redo_action->set_enabled(false);
game = Game(board_size, target_tile, evil_ai);
@ -131,6 +158,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
board_view->on_move = [&](Game::Direction direction) {
undo_stack.append(game);
undo_action->set_enabled(true);
redo_stack.clear();
redo_action->set_enabled(false);
auto outcome = game.attempt_move(direction);
switch (outcome) {
case Game::MoveOutcome::OK:
@ -171,21 +203,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
start_a_new_game();
}));
game_menu->add_action(GUI::CommonActions::make_undo_action([&](auto&) {
if (undo_stack.is_empty())
return;
redo_stack.append(game);
game = undo_stack.take_last();
update();
}));
game_menu->add_action(GUI::CommonActions::make_redo_action([&](auto&) {
if (redo_stack.is_empty())
return;
undo_stack.append(game);
game = redo_stack.take_last();
update();
}));
game_menu->add_action(*undo_action);
game_menu->add_action(*redo_action);
game_menu->add_separator();
game_menu->add_action(GUI::Action::create("&Settings", TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/settings.png"sv)), [&](auto&) {