private void addForwardsTransformations(pSprite sprite, double startTime, int index, double extraDistance, float offsetY = 0, double extraTime = 0)
{
//Same thing as the method above, but forwards
//This loop has two stages, first going until the final time, then going until the final position
//To switch between the two stages, Infinity is used to disable the other final state
double startPos = ManiaStage.Skin.HitPosition;
double finalPos = Double.PositiveInfinity;
double finalTime = startTime + extraTime;
byte tag = TransformationTag.BetweenStartEndTime;
for (int i = index; i + 1 < speedChanges.Count; i++)
{
REDO:
//Move forwards either to the final time, or to when this control point ends
double endTime = Math.Min(speedChanges[i + 1].Offset, finalTime);
double endPos = startPos + SpeedMania.DistanceAt(speedChanges[i].BeatLength, endTime - startTime);
if (startTime == endTime)
{
goto END;
}
if (endPos > finalPos)
{
endTime = startTime + SpeedMania.TimeAt(speedChanges[i].BeatLength, finalPos - startPos);
endPos = finalPos;
}
sprite.Transformations.Add(new Transformation(TransformationType.MovementY,
ScaleFlipPosition((float)startPos + offsetY),
ScaleFlipPosition((float)endPos + offsetY),
(int)startTime, (int)endTime)
{
TagNumeric = tag
});
if (endPos == finalPos)
{
break;
}
startTime = endTime;
startPos = endPos;
END:
//Reached the final time, so go to the final position
if (endTime == finalTime)
{
finalPos = endPos - ManiaStage.Skin.HitPosition + WindowManager.DEFAULT_HEIGHT + Math.Max(extraDistance, 0);
finalTime = Double.PositiveInfinity;
tag = TransformationTag.AfterEndTime;
//We need to redo this iteration because we may not be at the end of the control point
goto REDO;
}
}
}
private void addBackwardsTransformations(pSprite sprite, double endTime, int index, double extraDistance, float offsetY = 0)
{
//Move backwards through speedChanges to find the exact time the note should appear
double endPos = ManiaStage.Skin.HitPosition;
double finalPos = 0 + Math.Min(extraDistance, 0);
for (int i = index; i >= 0; i--)
{
//Move backwards to the start of this control point
double startTime = speedChanges[i].Offset;
double startPos = endPos - SpeedMania.DistanceAt(speedChanges[i].BeatLength, endTime - startTime);
if (startTime == endTime)
{
continue;
}
if (startPos < finalPos)
{
startTime = endTime - SpeedMania.TimeAt(speedChanges[i].BeatLength, endPos - finalPos);
startPos = finalPos;
}
sprite.Transformations.Add(new Transformation(TransformationType.MovementY,
ScaleFlipPosition((float)(startPos + offsetY)),
ScaleFlipPosition((float)(endPos + offsetY)),
(int)startTime, (int)endTime)
{
TagNumeric = TransformationTag.BeforeStartTime
});
if (startPos == finalPos)
{
break;
}
endTime = startTime;
endPos = startPos;
}
}