diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarousel.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarousel.cs index 0cc37bbd57..76a8ee9914 100644 --- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarousel.cs +++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarousel.cs @@ -83,6 +83,82 @@ namespace osu.Game.Tests.Visual.SongSelect waitForSelection(set_count, 3); } + [TestCase(true)] + [TestCase(false)] + public void TestTraversalBeyondVisible(bool forwards) + { + var sets = new List(); + + const int total_set_count = 200; + + for (int i = 0; i < total_set_count; i++) + sets.Add(createTestBeatmapSet(i + 1)); + + loadBeatmaps(sets); + + for (int i = 1; i < total_set_count; i += i) + selectNextAndAssert(i); + + void selectNextAndAssert(int amount) + { + setSelected(forwards ? 1 : total_set_count, 1); + + AddStep($"{(forwards ? "Next" : "Previous")} beatmap {amount} times", () => + { + for (int i = 0; i < amount; i++) + { + carousel.SelectNext(forwards ? 1 : -1); + } + }); + + waitForSelection(forwards ? amount + 1 : total_set_count - amount); + } + } + + [Test] + public void TestTraversalBeyondVisibleDifficulties() + { + var sets = new List(); + + const int total_set_count = 20; + + for (int i = 0; i < total_set_count; i++) + sets.Add(createTestBeatmapSet(i + 1)); + + loadBeatmaps(sets); + + // Selects next set once, difficulty index doesn't change + selectNextAndAssert(3, true, 2, 1); + + // Selects next set 16 times (50 \ 3 == 16), difficulty index changes twice (50 % 3 == 2) + selectNextAndAssert(50, true, 17, 3); + + // Travels around the carousel thrice (200 \ 60 == 3) + // continues to select 20 times (200 \ 60 == 20) + // selects next set 6 times (20 \ 3 == 6) + // difficulty index changes twice (20 % 3 == 2) + selectNextAndAssert(200, true, 7, 3); + + // All same but in reverse + selectNextAndAssert(3, false, 19, 3); + selectNextAndAssert(50, false, 4, 1); + selectNextAndAssert(200, false, 14, 1); + + void selectNextAndAssert(int amount, bool forwards, int expectedSet, int expectedDiff) + { + // Select very first or very last difficulty + setSelected(forwards ? 1 : 20, forwards ? 1 : 3); + + AddStep($"{(forwards ? "Next" : "Previous")} difficulty {amount} times", () => + { + for (int i = 0; i < amount; i++) + carousel.SelectNext(forwards ? 1 : -1, false); + }); + + waitForSelection(expectedSet, expectedDiff); + } + } + /// /// Test filtering /// diff --git a/osu.Game/Screens/Select/BeatmapCarousel.cs b/osu.Game/Screens/Select/BeatmapCarousel.cs index fa8974f55a..59dddc2baa 100644 --- a/osu.Game/Screens/Select/BeatmapCarousel.cs +++ b/osu.Game/Screens/Select/BeatmapCarousel.cs @@ -253,46 +253,37 @@ namespace osu.Game.Screens.Select /// Whether to skip individual difficulties and only increment over full groups. public void SelectNext(int direction = 1, bool skipDifficulties = true) { - var visibleItems = Items.Where(s => !s.Item.Filtered.Value).ToList(); - - if (!visibleItems.Any()) + if (beatmapSets.All(s => s.Filtered.Value)) return; - DrawableCarouselItem drawable = null; + if (skipDifficulties) + selectNextSet(direction, true); + else + selectNextDifficulty(direction); + } - if (selectedBeatmap != null && (drawable = selectedBeatmap.Drawables.FirstOrDefault()) == null) - // if the selected beatmap isn't present yet, we can't correctly change selection. - // we can fix this by changing this method to not reference drawables / Items in the first place. - return; + private void selectNextSet(int direction, bool skipDifficulties) + { + var unfilteredSets = beatmapSets.Where(s => !s.Filtered.Value).ToList(); - int originalIndex = visibleItems.IndexOf(drawable); - int currentIndex = originalIndex; + var nextSet = unfilteredSets[(unfilteredSets.IndexOf(selectedBeatmapSet) + direction + unfilteredSets.Count) % unfilteredSets.Count]; - // local function to increment the index in the required direction, wrapping over extremities. - int incrementIndex() => currentIndex = (currentIndex + direction + visibleItems.Count) % visibleItems.Count; + if (skipDifficulties) + select(nextSet); + else + select(direction > 0 ? nextSet.Beatmaps.First(b => !b.Filtered.Value) : nextSet.Beatmaps.Last(b => !b.Filtered.Value)); + } - while (incrementIndex() != originalIndex) - { - var item = visibleItems[currentIndex].Item; + private void selectNextDifficulty(int direction) + { + var unfilteredDifficulties = selectedBeatmapSet.Children.Where(s => !s.Filtered.Value).ToList(); - if (item.Filtered.Value || item.State.Value == CarouselItemState.Selected) continue; + int index = unfilteredDifficulties.IndexOf(selectedBeatmap); - switch (item) - { - case CarouselBeatmap beatmap: - if (skipDifficulties) continue; - - select(beatmap); - return; - - case CarouselBeatmapSet set: - if (skipDifficulties) - select(set); - else - select(direction > 0 ? set.Beatmaps.First(b => !b.Filtered.Value) : set.Beatmaps.Last(b => !b.Filtered.Value)); - return; - } - } + if (index + direction < 0 || index + direction >= unfilteredDifficulties.Count) + selectNextSet(direction, false); + else + select(unfilteredDifficulties[index + direction]); } ///