Closes https://github.com/ppy/osu/issues/28587.
As outlined in the issue thread, the tail volume wasn't saving because
it wasn't actually attached to a hitobject properly, and as such the
`LegacyBeatmapEncoder` logic, which is based on hitobjects, did not
pick them up on save.
To fix that, switch to using `NodeSamples` for objects that are
`IHasRepeats`. That has one added complication in that having it work
properly requires changes to the decode side too. That is because the
intent is to allow the user to change the sample settings for each node
(which are specified via `NodeSamples`), as well as "the rest of the
object", which generally means ticks or auxiliary samples like
`sliderslide` (which are specified by `Samples`).
However, up until now, `Samples` always queried the control point
which was _active at the end time of the slider_. This obviously can't
work anymore when converting `NodeSamples` to legacy control points,
because the last node's sample is _also_ at the end time of the slider.
To bypass that, add extra sample points after each node (just out of
reach of the 5ms leniency), which are supposed to control volume of
ticks and/or slides.
Upon testing, this *sort of* has the intended effect in stable, with
the exception of `sliderslide`, which seems to either respect or _not_
respect the relevant volume spec dependent on... not sure what, and not
sure I want to be debugging that. It might be frame alignment, or it
might be the phase of the moon.
As discussed in https://github.com/ppy/osu/discussions/28599.
I think this feels better overall, and would like to apply the change
before other design changes to the carousel.
This is the secondary cause of https://github.com/ppy/osu/issues/28577,
because you could do the following:
- Have a break autogenerate itself
- Adjust either end of it to make it mark itself as manually-adjusted
- Remove all objects before or after said break
to end up in a state wherein there are no objects before or after a
break.
The direct fix is still correct because it is still technically possible
to end up in a state wherein a break is before or after all objects
(obvious one is manual `.osu` editing), but this behaviour is also
undesirable for the autogeneration logic.
Regressed in https://github.com/ppy/osu/pull/28399.
To reproduce, enter a playlist that has an item with a rate-changing mod
(rather than create it yourself).
This is happening because `APIRuleset` has `CreateInstance()`
unimplemented:
b4cefe0cc2/osu.Game/Online/API/Requests/Responses/APIBeatmap.cs (L159)
and only triggers when the playlist items in question originate from
web.
This is why it is bad to have interface implementations throw outside of
maybe mock implementations for tests. `CreateInstance()` is a scourge
elsewhere in general, we need way less of it in the codebase (because
while convenient, it's also problematic to implement in online contexts,
and also expensive because reflection).
