private void addPathData(TextWriter writer, IHasPath pathData, Vector2 position)
{
PathType?lastType = null;
for (int i = 0; i < pathData.Path.ControlPoints.Count; i++)
{
PathControlPoint point = pathData.Path.ControlPoints[i];
if (point.Type != null)
{
// We've reached a new (explicit) segment!
// Explicit segments have a new format in which the type is injected into the middle of the control point string.
// To preserve compatibility with osu-stable as much as possible, explicit segments with the same type are converted to use implicit segments by duplicating the control point.
// One exception are consecutive perfect curves, which aren't supported in osu!stable and can lead to decoding issues if encoded as implicit segments
bool needsExplicitSegment = point.Type != lastType || point.Type == PathType.PerfectCurve;
// Another exception to this is when the last two control points of the last segment were duplicated. This is not a scenario supported by osu!stable.
// Lazer does not add implicit segments for the last two control points of _any_ explicit segment, so an explicit segment is forced in order to maintain consistency with the decoder.
if (i > 1)
{
// We need to use the absolute control point position to determine equality, otherwise floating point issues may arise.
Vector2 p1 = position + pathData.Path.ControlPoints[i - 1].Position;
Vector2 p2 = position + pathData.Path.ControlPoints[i - 2].Position;
if ((int)p1.X == (int)p2.X && (int)p1.Y == (int)p2.Y)
{
needsExplicitSegment = true;
}
}
if (needsExplicitSegment)
{
switch (point.Type)
{
case PathType.Bezier:
writer.Write("B|");
break;
case PathType.Catmull:
writer.Write("C|");
break;
case PathType.PerfectCurve:
writer.Write("P|");
break;
case PathType.Linear:
writer.Write("L|");
break;
}
lastType = point.Type;
}
else
{
// New segment with the same type - duplicate the control point
writer.Write(FormattableString.Invariant($"{position.X + point.Position.X}:{position.Y + point.Position.Y}|"));
}
}
if (i != 0)
{
writer.Write(FormattableString.Invariant($"{position.X + point.Position.X}:{position.Y + point.Position.Y}"));
writer.Write(i != pathData.Path.ControlPoints.Count - 1 ? "|" : ",");
}
}
var curveData = pathData as IHasPathWithRepeats;
writer.Write(FormattableString.Invariant($"{(curveData?.RepeatCount ?? 0) + 1},"));
writer.Write(FormattableString.Invariant($"{pathData.Path.Distance},"));
if (curveData != null)
{
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
writer.Write(FormattableString.Invariant($"{(int)toLegacyHitSoundType(curveData.NodeSamples[i])}"));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
writer.Write(getSampleBank(curveData.NodeSamples[i], true));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
}
}
private void addPathData(TextWriter writer, IHasPath pathData, Vector2 position)
{
PathType?lastType = null;
for (int i = 0; i < pathData.Path.ControlPoints.Count; i++)
{
PathControlPoint point = pathData.Path.ControlPoints[i];
if (point.Type.Value != null)
{
if (point.Type.Value != lastType)
{
switch (point.Type.Value)
{
case PathType.Bezier:
writer.Write("B|");
break;
case PathType.Catmull:
writer.Write("C|");
break;
case PathType.PerfectCurve:
writer.Write("P|");
break;
case PathType.Linear:
writer.Write("L|");
break;
}
lastType = point.Type.Value;
}
else
{
// New segment with the same type - duplicate the control point
writer.Write(FormattableString.Invariant($"{position.X + point.Position.Value.X}:{position.Y + point.Position.Value.Y}|"));
}
}
if (i != 0)
{
writer.Write(FormattableString.Invariant($"{position.X + point.Position.Value.X}:{position.Y + point.Position.Value.Y}"));
writer.Write(i != pathData.Path.ControlPoints.Count - 1 ? "|" : ",");
}
}
var curveData = pathData as IHasPathWithRepeats;
writer.Write(FormattableString.Invariant($"{(curveData?.RepeatCount ?? 0) + 1},"));
writer.Write(FormattableString.Invariant($"{pathData.Path.Distance},"));
if (curveData != null)
{
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
writer.Write(FormattableString.Invariant($"{(int)toLegacyHitSoundType(curveData.NodeSamples[i])}"));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
writer.Write(getSampleBank(curveData.NodeSamples[i], true));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
}
}
