diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs index 9816f6d0a4..27b34a022f 100644 --- a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs +++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs @@ -12,9 +12,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators public static class AimEvaluator { private const double wide_angle_multiplier = 1.5; - private const double acute_angle_multiplier = 1.95; + private const double acute_angle_multiplier = 2.5; private const double slider_multiplier = 1.35; private const double velocity_change_multiplier = 0.75; + private const double wiggle_multiplier = 1.1; /// /// Evaluates the difficulty of aiming the current object, based on: @@ -64,6 +65,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators double acuteAngleBonus = 0; double sliderBonus = 0; double velocityChangeBonus = 0; + double wiggleBonus = 0; double aimStrain = currVelocity; // Start strain with regular velocity. @@ -79,22 +81,26 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators double angleBonus = Math.Min(currVelocity, prevVelocity); wideAngleBonus = calcWideAngleBonus(currAngle); - acuteAngleBonus = calcAcuteAngleBonus(currAngle); - if (DifficultyCalculationUtils.MillisecondsToBPM(osuCurrObj.StrainTime, 2) < 300) // Only buff deltaTime exceeding 300 bpm 1/2. - acuteAngleBonus = 0; - else - { - acuteAngleBonus *= calcAcuteAngleBonus(lastAngle) // Multiply by previous angle, we don't want to buff unless this is a wiggle type pattern. - * Math.Min(angleBonus, diameter * 1.25 / osuCurrObj.StrainTime) // The maximum velocity we buff is equal to 125 / strainTime - * Math.Pow(Math.Sin(Math.PI / 2 * Math.Min(1, (100 - osuCurrObj.StrainTime) / 25)), 2) // scale buff from 150 bpm 1/4 to 200 bpm 1/4 - * Math.Pow(Math.Sin(Math.PI / 2 * (Math.Clamp(osuCurrObj.LazyJumpDistance, radius, diameter) - radius) / radius), 2); // Buff distance exceeding radius up to diameter. - } + // Apply acute angle bonus for BPM above 300 1/2 and distance more than one diameter + acuteAngleBonus = calcAcuteAngleBonus(currAngle) * + angleBonus * + DifficultyCalculationUtils.Smootherstep(DifficultyCalculationUtils.MillisecondsToBPM(osuCurrObj.StrainTime, 2), 300, 400) * + DifficultyCalculationUtils.Smootherstep(osuCurrObj.LazyJumpDistance, diameter, diameter * 2); // Penalize wide angles if they're repeated, reducing the penalty as the lastAngle gets more acute. wideAngleBonus *= angleBonus * (1 - Math.Min(wideAngleBonus, Math.Pow(calcWideAngleBonus(lastAngle), 3))); // Penalize acute angles if they're repeated, reducing the penalty as the lastLastAngle gets more obtuse. - acuteAngleBonus *= 0.5 + 0.5 * (1 - Math.Min(acuteAngleBonus, Math.Pow(calcAcuteAngleBonus(lastLastAngle), 3))); + acuteAngleBonus *= 1 - Math.Min(acuteAngleBonus, Math.Pow(calcAcuteAngleBonus(lastLastAngle), 3)); + + // Apply wiggle bonus for jumps that are [radius, 2*diameter] in distance and with < 110 angle + wiggleBonus = angleBonus + * DifficultyCalculationUtils.Smootherstep(osuCurrObj.LazyJumpDistance, radius, diameter) + * DifficultyCalculationUtils.Smootherstep(osuCurrObj.LazyJumpDistance, diameter * 2, diameter) + * DifficultyCalculationUtils.Smootherstep(currAngle, double.DegreesToRadians(110), double.DegreesToRadians(60)) + * DifficultyCalculationUtils.Smootherstep(osuLastObj.LazyJumpDistance, radius, diameter) + * DifficultyCalculationUtils.Smootherstep(osuLastObj.LazyJumpDistance, diameter * 2, diameter) + * DifficultyCalculationUtils.Smootherstep(lastAngle, double.DegreesToRadians(110), double.DegreesToRadians(60)); } } @@ -122,6 +128,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators sliderBonus = osuLastObj.TravelDistance / osuLastObj.TravelTime; } + aimStrain += wiggleBonus * wiggle_multiplier; + // Add in acute angle bonus or wide angle bonus + velocity change bonus, whichever is larger. aimStrain += Math.Max(acuteAngleBonus * acute_angle_multiplier, wideAngleBonus * wide_angle_multiplier + velocityChangeBonus * velocity_change_multiplier); diff --git a/osu.Game/Rulesets/Difficulty/Utils/DifficultyCalculationUtils.cs b/osu.Game/Rulesets/Difficulty/Utils/DifficultyCalculationUtils.cs index b9efcd683d..2f37dd53f7 100644 --- a/osu.Game/Rulesets/Difficulty/Utils/DifficultyCalculationUtils.cs +++ b/osu.Game/Rulesets/Difficulty/Utils/DifficultyCalculationUtils.cs @@ -46,5 +46,18 @@ namespace osu.Game.Rulesets.Difficulty.Utils /// Exponent /// The output of logistic function public static double Logistic(double exponent, double maxValue = 1) => maxValue / (1 + Math.Exp(exponent)); + + /// + /// Smootherstep function (https://en.wikipedia.org/wiki/Smoothstep#Variations) + /// + /// Value to calculate the function for + /// Value at which function returns 0 + /// Value at which function returns 1 + public static double Smootherstep(double x, double start, double end) + { + x = Math.Clamp((x - start) / (end - start), 0.0, 1.0); + + return x * x * x * (x * (6.0 * x - 15.0) + 10.0); + } } }