protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods, double clockRate)
{
var hitObjects = beatmap.HitObjects as List <OsuHitObject>;
double mapLength = 0;
if (beatmap.HitObjects.Count > 0)
{
mapLength = (beatmap.HitObjects.Last().StartTime - beatmap.HitObjects.First().StartTime) / 1000 / clockRate;
}
double preemptNoClockRate = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450);
var noteDensities = NoteDensity.CalculateNoteDensities(hitObjects, preemptNoClockRate);
// Tap
var tapAttributes = Tap.CalculateTapAttributes(hitObjects, clockRate);
// Finger Control
double fingerControlDiff = FingerControl.CalculateFingerControlDiff(hitObjects, clockRate);
// Aim
var aimAttributes = Aim.CalculateAimAttributes(hitObjects, clockRate, tapAttributes.StrainHistory, noteDensities);
double tapSr = tap_multiplier * Math.Pow(tapAttributes.TapDifficulty, sr_exponent);
double aimSr = aim_multiplier * Math.Pow(aimAttributes.FcProbabilityThroughput, sr_exponent);
double fingerControlSr = finger_control_multiplier * Math.Pow(fingerControlDiff, sr_exponent);
double sr = Mean.PowerMean(new[] { tapSr, aimSr, fingerControlSr }, 7) * 1.131;
HitWindows hitWindows = new OsuHitWindows();
hitWindows.SetDifficulty(beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty);
// Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be removed in the future
double hitWindowGreat = (int)(hitWindows.WindowFor(HitResult.Great)) / clockRate;
double preempt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / clockRate;
int maxCombo = beatmap.HitObjects.Count;
// Add the ticks + tail of the slider. 1 is subtracted because the head circle would be counted twice (once for the slider itself in the line above)
maxCombo += beatmap.HitObjects.OfType <Slider>().Sum(s => s.NestedHitObjects.Count - 1);
return(new OsuDifficultyAttributes
{
StarRating = sr,
Mods = mods,
Length = mapLength,
TapSr = tapSr,
TapDiff = tapAttributes.TapDifficulty,
StreamNoteCount = tapAttributes.StreamNoteCount,
MashTapDiff = tapAttributes.MashedTapDifficulty,
FingerControlSr = fingerControlSr,
FingerControlDiff = fingerControlDiff,
AimSr = aimSr,
AimDiff = aimAttributes.FcProbabilityThroughput,
AimHiddenFactor = aimAttributes.HiddenFactor,
ComboTps = aimAttributes.ComboThroughputs,
MissTps = aimAttributes.MissThroughputs,
MissCounts = aimAttributes.MissCounts,
CheeseNoteCount = aimAttributes.CheeseNoteCount,
CheeseLevels = aimAttributes.CheeseLevels,
CheeseFactors = aimAttributes.CheeseFactors,
ApproachRate = preempt > 1200 ? (1800 - preempt) / 120 : (1200 - preempt) / 150 + 5,
OverallDifficulty = (80 - hitWindowGreat) / 6,
MaxCombo = maxCombo
});
}
protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods, double clockRate)
{
var hitObjects = beatmap.HitObjects as List <OsuHitObject>;
if (beatmap.HitObjects.Count == 0)
{
return new OsuDifficultyAttributes {
Mods = mods
}
}
;
double mapLength = (beatmap.HitObjects.Last().StartTime - beatmap.HitObjects.First().StartTime) / 1000 / clockRate;
// Tap
(var tapDiff, var streamNoteCount, var mashLevels, var tapSkills, var strainHistory) =
Tap.CalculateTapAttributes(hitObjects, clockRate);
// Finger Control
double fingerControlDiff = FingerControl.CalculateFingerControlDiff(hitObjects, clockRate);
// Aim
(var aimDiff, var fcTimeTP, var comboTPs, var missTPs, var missCounts,
var cheeseNoteCount, var cheeseLevels, var cheeseFactors, var graphText) =
Aim.CalculateAimAttributes(hitObjects, clockRate, strainHistory);
// graph for aim
string graphFilePath = Path.Combine("cache", $"graph_{beatmap.BeatmapInfo.OnlineBeatmapID}.txt");
File.WriteAllText(graphFilePath, graphText);
double tapSR = tapMultiplier * Math.Pow(tapDiff, srExponent);
double aimSR = aimMultiplier * Math.Pow(aimDiff, srExponent);
double fingerControlSR = fingerControlMultiplier * Math.Pow(fingerControlDiff, srExponent);
double sr = Mean.PowerMean(new double[] { tapSR, aimSR, fingerControlSR }, 7) * 1.131;
HitWindows hitWindows = new OsuHitWindows();
hitWindows.SetDifficulty(beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty);
// Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be removed in the future
double hitWindowGreat = (int)(hitWindows.Great / 2) / clockRate;
double preempt = (int)BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450) / clockRate;
int maxCombo = beatmap.HitObjects.Count;
// Add the ticks + tail of the slider. 1 is subtracted because the head circle would be counted twice (once for the slider itself in the line above)
maxCombo += beatmap.HitObjects.OfType <Slider>().Sum(s => s.NestedHitObjects.Count - 1);
return(new OsuDifficultyAttributes
{
StarRating = sr,
Mods = mods,
Length = mapLength,
TapSR = tapSR,
TapDiff = tapDiff,
StreamNoteCount = streamNoteCount,
MashLevels = mashLevels,
TapSkills = tapSkills,
FingerControlSR = fingerControlSR,
FingerControlDiff = fingerControlDiff,
AimSR = aimSR,
AimDiff = aimDiff,
ComboTPs = comboTPs,
MissTPs = missTPs,
MissCounts = missCounts,
CheeseNoteCount = cheeseNoteCount,
CheeseLevels = cheeseLevels,
CheeseFactors = cheeseFactors,
ApproachRate = preempt > 1200 ? (1800 - preempt) / 120 : (1200 - preempt) / 150 + 5,
OverallDifficulty = (80 - hitWindowGreat) / 6,
MaxCombo = maxCombo
});
}