Per the request of spaceman_atlas, the No Release mod is rewritten to
avoid modifications to DrawableHoldNoteTail. The approach is based
on that of the Strict Tracking mod for the osu!(standard) ruleset,
injecting the mod behavior by replacing the normal hold note with
the mod's variant. The variant inherits most bevaior from the normal
hold note, but when creating nested hitobjects, it creates its own
hold note tail variant instead, which in turn is used to instantiate
the mod's variant of DrawableHoldNoteTail with a new behavior.
The time a judgement is awarded is changed from the end of its
Perfect window to the time of the tail itself.
This commit adds a new osu!mania mod No Release that relaxes tail
judgements. The current implementation automatically awards Perfect
(or Meh if the hold note is broken midway) for a hold note tail at
the end of its Perfect window, as long as it is held by then.
Tests are pending for the next commit.
Hopefully closes https://github.com/ppy/osu/issues/28284.
As far as I can tell this is a somewhat difficult one to reproduce
because it relies on a specific set of circumstances (at least the
reproduction case that I found does). The reset to frame 0 would
previously be called explicitly when `isHitting` changed:
182ca145c7/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBodyPiece.cs (L144)
However, it can be the case that `bodyAnimation` is not loaded at the
point of this call. This is significant because
`SkinnableTextureAnimation` contains this logic:
182ca145c7/osu.Game/Skinning/LegacySkinExtensions.cs (L192-L211)
which cannot be moved any earlier (because any earlier the `Clock` may
no longer be correct), and also causes the animation to be seeked
forward while it is stopped.
I can't figure out a decent way to layer this otherwise (by scheduling
or whatever), so this commit is just applying the nuclear option of just
seeking back to frame 0 on every update frame in which the body piece is
not being hit.
