public static void changeBpmOfTimingPoint(Beatmap beatmap, HtmlDisplayer htmlDisplayer,
double offset, double newValue, bool shiftRestOfBeatmap,
bool saveBackups, string customPath)
{
if (saveBackups)
{
beatmap.save(customPath + "//" + beatmap.FileName);
}
decimal newValueDecimal = Convert.ToDecimal(newValue);
// We need to extract the objects between the selected offset and the next timing point.
List <TimingPoint> originalPoints = beatmap.TimingPoints;
// Get exact and next timing points. Exact timing point cannot be null. If it is null, throw
// a message and bail out.
TimingPoint sourcePoint = SearchUtils.GetExactTimingPoint(originalPoints, offset);
TimingPoint nextPoint = SearchUtils.GetClosestNextTimingPoint(originalPoints, sourcePoint);
if (sourcePoint == null)
{
if (!htmlDisplayer.containsSections())
{
htmlDisplayer.addSection("Starting uninherited timing point not found in one or more difficulties.");
}
else
{
htmlDisplayer.addLineBreak();
}
htmlDisplayer.addSubsection("Beatmap difficulty: " + beatmap.DifficultyName);
htmlDisplayer.addWarning(StringUtils.GetOffsetWithLink(offset) + " does not exist.");
return;
}
// Get the objects we require.
SearchUtils.GetObjectsInBetween(beatmap, offset, nextPoint != null ? nextPoint.Offset : double.MaxValue,
out IList <Bookmark> bookmarks, out IList <TimingPoint> timingPoints, out IList <HitObject> hitObjects);
// Since the snaps are already calculated, it should be easy to calculate the next offsets
// after changing the BPM.
// Remove the next timing point offset from all lists.
if (nextPoint != null)
{
((SubList <Bookmark>)bookmarks).TrimEnd(x => x.Offset == nextPoint.Offset);
((SubList <TimingPoint>)timingPoints).TrimEnd(x => x.Offset == nextPoint.Offset);
((SubList <HitObject>)hitObjects).TrimEnd(x => x.Offset == nextPoint.Offset);
}
// Next point's snap is important to determine the offset difference for rest of the objects,
// if shifting is enabled.
if (shiftRestOfBeatmap && nextPoint != null)
{
// This means there is a next point and it should be included in timingPoints list.
// Check the snap differences between them and shift them all first.
decimal snapDifference = Convert.ToDecimal(nextPoint.GetSnap()) - Convert.ToDecimal(sourcePoint.GetSnap());
int offsetDifference = SnapUtils.calculateEndOffsetFromBpmValue(offset, snapDifference, newValueDecimal);
// Shift all the objects starting from the last object offset.
SearchUtils.GetObjectsInBetween(beatmap, offset, nextPoint.Offset,
out IList <Bookmark> bookmarks2, out IList <TimingPoint> timingPoints2, out IList <HitObject> hitObjects2);
SnapUtils.shiftAllElementsByOffset(offsetDifference, hitObjects2, timingPoints2, bookmarks2);
}
// After this, now start calculating the end offsets from the relative snaps of the elements.
sourcePoint.PointValue = newValue;
// Use the newValueDecimal to adjust everything.
SnapUtils.shiftAllElementsByNewPointValue(beatmap, sourcePoint, offset, newValueDecimal, hitObjects, timingPoints, bookmarks);
// And the process should be complete.
}
public static bool AddSvChanges(Form form, Beatmap beatmap, double firstOffset, double lastOffset,
double firstSv, double lastSv, double targetBpm,
double gridSnap, int svOffset, int svIncreaseMode, int count,
double svIncreaseMultiplier, bool putPointsByNotes)
{
List <TimingPoint> actualPoints = beatmap.TimingPoints;
if (count > 0 && lastOffset <= firstOffset)
{
if (putPointsByNotes)
{
// We need to determine the end offset here from notes
// and note count.
SnapUtils.getEndOffsetFromObjectsByCount(beatmap, firstOffset, count, out lastOffset);
}
else
{
if (gridSnap == 0)
{
showErrorMessageInMainThread(form, "End offset was not defined and grid snap and count values are" + Environment.NewLine + "also not defined, hence the end offset could not be calculated. Aborting.");
return(false);
}
lastOffset = SnapUtils.calculateEndOffset(beatmap, firstOffset, gridSnap, count);
}
}
else if (lastOffset <= firstOffset)
{
showErrorMessageInMainThread(form, "End offset could not be calculated, necessary values are missing.");
return(false);
}
SearchUtils.GetObjectsInBetween(beatmap, firstOffset, lastOffset,
out IList <TimingPoint> points, out IList <HitObject> objects);
// If "putPointsByNotes" is selected and no objects are found, throw an error
// and return false.
if (putPointsByNotes && objects.Count == 0)
{
showErrorMessageInMainThread(form, "No hit objects found in the specified area. Aborting.");
return(false);
}
// We need at least 1 timing point to take reference from
// the start of the list. Account that and add a timing
// point if the first index is not a timing point already.
if (!SearchUtils.IsFirstPointTimingPoint(points))
{
points.Insert(0, SearchUtils.GetClosestTimingPoint(actualPoints, firstOffset));
}
// After this, if we still don't have a timing point, we cannot proceed.
// A map has to contain at least one timing point before or on the declared offset.
if (!SearchUtils.ContainsTimingPoint(points))
{
showErrorMessageInMainThread(form, "No timing points found to take reference from. Aborting.");
return(false);
}
// The POW value. This is determined by
// "svIncreaseMode" and "svIncreaseMultiplier"
// where "svIncreaseMode" is 0 for linear, 1 for exponential
// and 2 for logarithmic. If mode is 0, POW is always 1.
// If mode is 1, the POW is the original value.
// If mode is 2, the POW is divided as 1/POW.
double pow;
switch (svIncreaseMode)
{
case 0:
pow = 1;
break;
case 1:
pow = svIncreaseMultiplier;
break;
case 2:
pow = 1 / svIncreaseMultiplier;
break;
default:
throw new ArgumentException("The sv increase mode has to be 0, 1 or 2, found " + svIncreaseMode + ".");
}
// This is a really corner case since we already prevent it from
// happening in the SV Changer form itself, but it still is checked.
if (pow == 0)
{
showErrorMessageInMainThread(form, "The sv increase mode and sv increase multiplier has" + Environment.NewLine + "resulted in the power value being 0. Aborting.");
return(false);
}
// If "put points by notes" is selected,
// we need to calculate the target offset by
// the first note.
if (putPointsByNotes)
{
firstOffset = objects[0].Offset;
}
// Get the start BPM value.
double startBpmValue = SearchUtils.GetBpmValueInOffset(actualPoints, firstOffset);
// If "targetBpm" is entered, we need to apply a ratio to the last SV.
// Apply the logic here and change the last SV value depending on it.
if (targetBpm != 0)
{
double ratio = targetBpm / SearchUtils.GetBpmInOffset(actualPoints, firstOffset);
lastSv *= ratio;
}
// Now that we have set already in place, let's calculate the SVs and
// add or edit them.
// The temp value to use on additional SVs.
double targetSv;
// The temp value for the SV for osu! representation.
double targetSvValue;
// The current percentage that will result
// in the final SV of the point. This should be
// always equal to percentage change if the change is linear.
double targetPowerValue;
// Define a target offset object and
// calculate the target offset depending
// on the passed parameters, a.k.a "putPointsByNoteSnaps"
// or "gridSnap" and "count".
double targetOffset = firstOffset;
// Used in determining which hit object
// we should use if "put points by notes"
// is selected, as the target offset.
int hitObjectIndex = 0;
while (targetOffset <= lastOffset)
{
// Compute the actual target offset, where the offset is determined
// but needs to be shifted depending on user input.
double actualTargetOffset = targetOffset + svOffset;
// This is the BPM value, not the BPM itself, a.k.a it is the osu! representation
// of a BPM value. For instance, this is 1000 if BPM is 120 in the map, where
// a beat is in a total second.
double currentBpmValue = SearchUtils.GetBpmValueInOffset(points, targetOffset);
// The ratio that we need to multiply while calculating the SV.
double ratio = startBpmValue / currentBpmValue;
// Get the closest and exact inherited points (if exists)
// Closest point cannot be null (it will return the first timing point
// in worst case), but exact point can be null.
TimingPoint closestPoint = SearchUtils.GetClosestPoint(actualPoints, targetOffset, true);
TimingPoint exactPoint = SearchUtils.GetExactInheritedPoint(actualPoints, targetOffset);
// The copy point that we need to hold the attributes of.
TimingPoint copy;
// Determines if the object is already existing in the list.
bool exists = false;
// If exact point is not null, we need to edit that.
if (exactPoint != null)
{
copy = exactPoint;
exists = true;
}
else
{
copy = new TimingPoint(closestPoint)
{
// Make sure the copy one is inherited.
IsInherited = true
};
}
// Get the current offset power value. This determines
// how much the target SV will be as in "startSv + this value".
targetPowerValue = MathUtils.calculateMultiplierFromPower(svIncreaseMultiplier,
firstOffset, lastOffset, targetOffset);
// Calculate the target SV. Now, the value should be divided by -100 / target SV
// to achieve the osu! representation of this value.
// Ratio is the BPM ratio between the start and current offset. Should be 1
// if the BPMs are the same.
targetSv = MathUtils.calculateValueFromPercentage(firstSv, lastSv, targetPowerValue) * ratio;
targetSvValue = -100d / targetSv;
// At this point, we need to either add the point, or
// replace the existing one. If the existing one toggles kiai,
// and the actualTargetOffset is different from this point's offset,
// we need to add a point and change the kiai one too instead.
// Otherwise, we just move the point.
if (exists)
{
if (SearchUtils.TogglesKiai(actualPoints, copy))
{
// If there is an offset change (a.k.a actualTargetOffset not
// equal to targetOffset) we need to add a point and change
// this one as well.
if (actualTargetOffset != targetOffset)
{
TimingPoint copy2 = new TimingPoint(copy)
{
Offset = actualTargetOffset,
IsKiaiOpen = !copy.IsKiaiOpen,
PointValue = targetSvValue
};
copy.PointValue = targetSvValue;
// Now, there is a trick here. If the actual inherited point
// exists with the edited offset, we need to edit that, not
// add a duplicate one and force an exception.
// Just set "exact" values of "copy" into this.
TimingPoint exact = SearchUtils.GetExactInheritedPoint(actualPoints, actualTargetOffset);
if (exact != null)
{
exact.setTo(copy);
}
else
{
// We haven't found an exact timing point so this is fine.
actualPoints.Insert(SearchUtils.GetAdditionIndex(actualPoints, copy2), copy2);
}
}
else
{
copy.PointValue = targetSvValue;
copy.Offset = actualTargetOffset;
SearchUtils.MarkChangeMade(actualPoints);
}
}
else
{
// If there is an offset change (a.k.a actualTargetOffset not
// equal to targetOffset) we need to add a point and change
// this one as well.
if (actualTargetOffset != targetOffset)
{
// This time, do not change the kiai.
TimingPoint copy2 = new TimingPoint(copy)
{
Offset = actualTargetOffset,
PointValue = targetSvValue
};
copy.PointValue = targetSvValue;
// Now, there is a trick here. If the actual inherited point
// exists with the edited offset, we need to edit that, not
// add a duplicate one and force an exception.
// Just set "exact" values of "copy" into this.
TimingPoint exact = SearchUtils.GetExactInheritedPoint(actualPoints, actualTargetOffset);
if (exact != null)
{
exact.setTo(copy);
}
else
{
// We haven't found an exact timing point so this is fine.
actualPoints.Insert(SearchUtils.GetAdditionIndex(actualPoints, copy2), copy2);
}
}
else
{
copy.PointValue = targetSvValue;
copy.Offset = actualTargetOffset;
SearchUtils.MarkChangeMade(actualPoints);
}
copy.PointValue = targetSvValue;
copy.Offset = actualTargetOffset;
SearchUtils.MarkChangeMade(actualPoints);
}
}
else
{
copy.PointValue = targetSvValue;
copy.Offset = actualTargetOffset;
// Now, there is a trick here. If the actual inherited point
// exists with the edited offset, we need to edit that, not
// add a duplicate one and force an exception.
// Just set "exact" values of "copy" into this.
TimingPoint exact = SearchUtils.GetExactInheritedPoint(actualPoints, actualTargetOffset);
if (exact != null)
{
exact.setTo(copy);
}
else
{
// We haven't found an exact timing point so this is fine.
actualPoints.Insert(SearchUtils.GetAdditionIndex(actualPoints, copy), copy);
}
}
// At the bottom, calculate the next offset
// and continue.
if (putPointsByNotes)
{
if (hitObjectIndex == objects.Count - 1)
{
break;
}
targetOffset = objects[++hitObjectIndex].Offset;
}
else
{
targetOffset += gridSnap / currentBpmValue;
}
}
// At the end, force sort the points
// and return true.
actualPoints.Sort();
SearchUtils.MarkSorted(actualPoints);
return(true);
}