Storing `DrawableHitObject` for later use is not safe – especially
when accessing `HitObject` – as it's a pooled class. In the case here,
it's important to note that `PrepareForUse` can be called a frame or
more later in execution, which made this unsafe.
Closes https://github.com/ppy/osu/issues/24444.
Regressed in https://github.com/ppy/osu/pull/25216.
The new logic will ensure at least one tick is ready for judgement.
There shouldn't be a case where more than one is needed in a single
frame.
Checking the delta after the application of rate is not correct. The
delta is in screen-space *before* the rate from rate-changing mods were
applied; the point of the application of the rate is to compensate for
the fact that the spinner is still judged in "track time" - but the goal
is to keep the spinner's difficulty *independent* of rate, which means
that with DT active the user's spin is "twice as effective" to
compensate for the fact that the spinner is twice as short in real time.
In another formulation, with DT active, the user gets to record replay
frames "half as often" as in normal gameplay.
stable's `pSpriteText` has a `TextConstantSpacing` flag, that is
selectively enabled for some usages. In particular, these are:
- mania combo counter (not yet implemented)
- taiko combo counter (not yet implemented)
- score counter
- accuracy counter
- scoreboard entries (not yet implemented)
Everything else uses non-fixed-width fonts.
Hilariously, `LegacySpinner` _tried_ to account for this by changing
`Font` to have `fixedWidth: false` specified, only to fail to notice
that `LegacySpriteText` changes `Font` in its BDL, making the property
set do precisely nothing. For this reason, attempting to set `Font`
on a `LegacySpriteText` will now throw.
Noticed this during work on https://github.com/ppy/osu/pull/25185.
In some circumstances, it seemed that spinner bonus ticks (and mostly
them specifically) would not always play with the correct volume.
Hours of debugging later pointed at a trace at
`DrawableAudioWrapper.refreshLayoutFromParent()` not firing sometimes.
Initially I thought it to be some sort of framework bug, but after
preparing a diff and running final checks, I noticed that sometimes
the sample was being played *by a `PoolableSkinnableSample` that wasn't
loaded*. And determining why *that* is the case turned out with this
diff.
As it happens, spinner ticks get assigned a start time proportionally,
i.e. the 1st of 10 ticks is placed at 10% of the duration, the 2nd
at 20%, and so on. The start time generally shouldn't matter,
because the spinner is manually judging the ticks. *However*, the ticks
*still* receive a lifetime start / end in the same way normal objects
do, which means that in some cases they can *not be alive* when they're
hit, which means that the `DrawableAudioWrapper` flow *hasn't had
a chance to run*, and rightly so.
To fix, ensure that all spinner ticks are alive throughout the entirety
of the spinner's duration.
