internal void CalculateStrains(DifficultyHitObjectFruits PreviousHitObject, double TimeRate)
{
// Rather simple, but more specialized things are inherently inaccurate due to the big difference playstyles and opinions make.
// See Taiko feedback thread.
double TimeElapsed = (double)(BaseHitObject.StartTime - PreviousHitObject.BaseHitObject.StartTime) / TimeRate;
double Decay = Math.Pow(DECAY_BASE, TimeElapsed / 1000);
// Update new position with lazy movement.
PlayerPositionOffset =
OsuMathHelper.Clamp(
PreviousHitObject.ActualNormalizedPosition,
NormalizedPosition - (NORMALIZED_HITOBJECT_RADIUS - playerPositioningError),
NormalizedPosition + (NORMALIZED_HITOBJECT_RADIUS - playerPositioningError)) // Obtain new lazy position, but be stricter by allowing for an error of a certain degree of the player.
- NormalizedPosition; // Subtract HitObject position to obtain offset
LastMovement = DistanceTo(PreviousHitObject);
double Addition = SpacingWeight(LastMovement);
if (NormalizedPosition < PreviousHitObject.NormalizedPosition)
{
LastMovement = -LastMovement;
}
HitCircleFruits previousHitCircle = PreviousHitObject.BaseHitObject as HitCircleFruits;
double additionBonus = 0;
double sqrtTime = Math.Sqrt(Math.Max(TimeElapsed, 25));
// Direction changes give an extra point!
if (Math.Abs(LastMovement) > 0.1)
{
if (Math.Abs(PreviousHitObject.LastMovement) > 0.1 && Math.Sign(LastMovement) != Math.Sign(PreviousHitObject.LastMovement))
{
double bonus = DIRECTION_CHANGE_BONUS / sqrtTime;
// Weight bonus by how
double bonusFactor = Math.Min(playerPositioningError, Math.Abs(LastMovement)) / playerPositioningError;
// We want time to play a role twice here!
Addition += bonus * bonusFactor;
// Bonus for tougher direction switches and "almost" hyperdashes at this point
if (previousHitCircle != null && previousHitCircle.DistanceToHyperDash <= 10)
{
additionBonus += 0.3 * bonusFactor;
}
}
// Base bonus for every movement, giving some weight to streams.
Addition += 7.5 * Math.Min(Math.Abs(LastMovement), NORMALIZED_HITOBJECT_RADIUS * 2) / (NORMALIZED_HITOBJECT_RADIUS * 6) / sqrtTime;
}
// Bonus for "almost" hyperdashes at corner points
if (previousHitCircle != null && previousHitCircle.DistanceToHyperDash <= 10)
{
if (!previousHitCircle.HyperDash)
{
additionBonus += 1.0;
}
else
{
// After a hyperdash we ARE in the correct position. Always!
PlayerPositionOffset = 0;
}
Addition *= 1.0 + additionBonus * ((10 - previousHitCircle.DistanceToHyperDash) / 10);
}
Addition *= 850.0 / Math.Max(TimeElapsed, 25);
Strain = PreviousHitObject.Strain * Decay + Addition;
}
internal float DistanceTo(DifficultyHitObjectFruits other)
{
return(Math.Abs(ActualNormalizedPosition - other.ActualNormalizedPosition));
}