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Chess: Add new ways to draw.

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new ways:
Insufficent material
Threefold/Fivefold repitition
50 move/75 move rule
This commit is contained in:
Peter Elliott 2020-08-12 14:41:35 -06:00 • committed by Andreas Kling
parent 9a817270e8
commit d90f8abe9d
3 changed files with 154 additions and 7 deletions
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38
Games/Chess/ChessWidget.cpp
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@ -62,7 +62,7 @@ void ChessWidget::paint_event(GUI::PaintEvent& event)
tile_rect = { (7 - sq.file) * tile_width, sq.rank * tile_height, tile_width, tile_height };
}
painter.fill_rect(tile_rect, ((sq.rank % 2) == (sq.file % 2)) ? board_theme().dark_square_color : board_theme().light_square_color);
painter.fill_rect(tile_rect, (sq.is_light()) ? board_theme().light_square_color : board_theme().dark_square_color);
if (board().last_move().has_value() && (board().last_move().value().to == sq || board().last_move().value().from == sq)) {
painter.fill_rect(tile_rect, m_move_highlight_color);
@ -124,9 +124,8 @@ void ChessWidget::mouseup_event(GUI::MouseEvent& event)
if (board().apply_move(move)) {
if (board().game_result() != Chess::Result::NotFinished) {
set_drag_enabled(false);
update();
bool over = true;
String msg;
switch (board().game_result()) {
case Chess::Result::CheckMate:
@ -140,15 +139,42 @@ void ChessWidget::mouseup_event(GUI::MouseEvent& event)
msg = "Draw by Stalemate.";
break;
case Chess::Result::FiftyMoveRule:
msg = "Draw by 50 move rule.";
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::Result::SeventyFiveMoveRule:
msg = "Draw by 75 move rule.";
break;
case Chess::Result::ThreeFoldRepitition:
msg = "Draw by threefold repitition.";
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 repitition.";
} else {
over = false;
}
break;
case Chess::Result::FiveFoldRepitition:
msg = "Draw by fivefold repitition.";
break;
case Chess::Result::InsufficientMaterial:
msg = "Draw by insufficient material.";
break;
default:
ASSERT_NOT_REACHED();
}
GUI::MessageBox::show(window(), msg, "Game Over", GUI::MessageBox::Type::Information);
if (over) {
set_drag_enabled(false);
update();
GUI::MessageBox::show(window(), msg, "Game Over", GUI::MessageBox::Type::Information);
}
}
}