public static BeatmapTraits CalculateTraitsWithMods(BeatmapTraits nomodTraits, Mods mods, GameMode mode)
{
// No mods - just return base traits
if (mods == Mods.None)
{
return(nomodTraits);
}
// Not standard - return base traits (no idea how those mods work)
if (mode != GameMode.Standard)
{
return(nomodTraits);
}
return(new BeatmapTraits(
nomodTraits.MaxCombo, // doesn't change
AdjustDuration(nomodTraits.Duration, mods),
AdjustTempo(nomodTraits.Tempo, mods),
nomodTraits.StarRating, // can't calculate
AdjustApproachRate(nomodTraits.ApproachRate, mods),
AdjustOverallDifficulty(nomodTraits.OverallDifficulty, mods),
AdjustCircleSize(nomodTraits.CircleSize, mods),
AdjustDrain(nomodTraits.Drain, mods)
));
}
public void CalculateTraitsWithMods(BeatmapTraits nomodTraits, Mods mods, GameMode mode, BeatmapTraits expectedTraits)
{
// Act
var traits = BeatmapTraitsLogic.CalculateTraitsWithMods(nomodTraits, mods, mode);
// Assert
traits.Should().BeEquivalentTo(expectedTraits,
o => o.Using <double>(ctx => ctx.Subject.Should().BeApproximately(ctx.Expectation, 0.01)).WhenTypeIs <double>());
}
public async Task <Beatmap> GetBeatmapAsync(string beatmapId, GameMode gameMode)
{
// Try to get from cache first
var cached = _cacheService.RetrieveOrDefault <Beatmap>($"Beatmap-{beatmapId}");
if (cached != null)
{
return(cached);
}
// Get
var url = $"https://osu.ppy.sh/api/get_beatmaps?k={ApiKey}&m={(int) gameMode}&b={beatmapId}&limit=1&a=1";
var response = await GetStringAsync(url);
// Parse
var beatmapJson = JToken.Parse(response).First;
// Extract data
var id = beatmapJson["beatmap_id"].Value <string>();
var setId = beatmapJson["beatmapset_id"].Value <string>();
var creator = beatmapJson["creator"].Value <string>();
var lastUpdate = beatmapJson["last_update"].Value <DateTime>();
var artist = beatmapJson["artist"].Value <string>();
var title = beatmapJson["title"].Value <string>();
var version = beatmapJson["version"].Value <string>();
var maxCombo = beatmapJson["max_combo"].Value <int?>() ?? 0; // can be null sometimes
var duration = TimeSpan.FromSeconds(beatmapJson["hit_length"].Value <double>());
var bpm = beatmapJson["bpm"].Value <double>();
var sr = beatmapJson["difficultyrating"].Value <double>();
var ar = beatmapJson["diff_approach"].Value <double>();
var od = beatmapJson["diff_overall"].Value <double>();
var cs = beatmapJson["diff_size"].Value <double>();
var hp = beatmapJson["diff_drain"].Value <double>();
var traits = new BeatmapTraits(maxCombo, duration, bpm, sr, ar, od, cs, hp);
var result = new Beatmap(id, setId, gameMode, creator, lastUpdate, artist, title, version, traits);
// Save to cache
_cacheService.Store($"Beatmap-{beatmapId}", result);
return(result);
}