/// <summary>
/// Calculates the movement time, effective distance and other details for the movement from objPrev to objCurr.
/// </summary>
/// <param name="fourthLastObject">Hit object four objects ago, relative to <paramref name="currentObject"/>.</param>
/// <param name="secondLastObject">Hit object immediately preceding <paramref name="lastObject"/></param>
/// <param name="lastObject">Hit object immediately preceding <paramref name="currentObject"/>.</param>
/// <param name="currentObject">The hit object being currently considered.</param>
/// <param name="nextObject">Hit object immediately succeeding <paramref name="currentObject"/>.</param>
/// <param name="tapStrain">The tap strain of the current object.</param> TODO: does this have to be passed down? maybe store in the object?
/// <param name="noteDensity">The visual note density of the current object.</param> TODO: above
/// <param name="gameplayRate">The current rate of the gameplay clock.</param>
/// <param name="hidden">Whether the hidden mod is active.</param>
/// <returns>List of movements performed in attempt to hit the current object.</returns>
public static List <OsuMovement> Extract(
[CanBeNull] OsuHitObject secondLastObject,
OsuHitObject lastObject,
OsuHitObject currentObject,
[CanBeNull] OsuHitObject nextObject,
double tapStrain,
double gameplayRate,
bool hidden,
double noteDensity,
[CanBeNull] OsuHitObject fourthLastObject = null)
{
var movement = new OsuMovement();
var parameters = new MovementExtractionParameters(fourthLastObject, secondLastObject, lastObject, currentObject, nextObject, gameplayRate);
movement.RawMovementTime = parameters.LastToCurrent.TimeDelta;
movement.StartTime = currentObject.StartTime / 1000.0;
if (currentObject is Spinner || lastObject is Spinner)
{
movement.Throughput = 0;
movement.Distance = 0;
movement.MovementTime = 1;
movement.Cheesablility = 0;
movement.CheeseWindow = 0;
return(new List <OsuMovement> {
movement
});
}
movement.EndsOnSlider = currentObject is Slider;
double movementThroughput = FittsLaw.Throughput(parameters.LastToCurrent.RelativeLength, parameters.LastToCurrent.TimeDelta);
movement.Throughput = movementThroughput;
movement.Distance = correctMovementDistance(parameters, movementThroughput, tapStrain, hidden, noteDensity);
calculateCheeseWindow(parameters, movementThroughput);
movement.MovementTime = parameters.LastToCurrent.TimeDelta;
movement.Cheesablility = parameters.Cheesability;
movement.CheeseWindow = parameters.CheeseWindow;
var movementWithNested = new List <OsuMovement> {
movement
};
// add zero difficulty movements corresponding to slider ticks/slider ends so combo is reflected properly
int extraNestedCount = currentObject.NestedHitObjects.Count - 1;
for (int i = 0; i < extraNestedCount; i++)
{
movementWithNested.Add(OsuMovement.Empty(movement.StartTime));
}
return(movementWithNested);
}
/// <summary>
/// Extracts movement (only for the first object in a beatmap).
/// </summary>
public static List <OsuMovement> ExtractFirst(OsuHitObject obj)
{
var movement = OsuMovement.Empty(obj.StartTime / 1000.0);
var movementWithNested = new List <OsuMovement> {
movement
};
// add zero difficulty movements corresponding to slider ticks/slider ends so combo is reflected properly
int extraNestedCount = obj.NestedHitObjects.Count - 1;
for (int i = 0; i < extraNestedCount; i++)
{
movementWithNested.Add(OsuMovement.Empty(movement.StartTime));
}
return(movementWithNested);
}
