Commit Graph

166 Commits

Author SHA1 Message Date
Bartłomiej Dach
b896d97a4f
Fix catch pp calculator not matching live with respect to miss handling 2024-03-04 11:53:59 +01:00
Bartłomiej Dach
7c9adc7ad3
Fix incorrect score conversion on selected beatmaps due to incorrect difficultyPeppyStars rounding
Fixes issue that occurs on *about* 246 beatmaps and was first described
by me on discord:

    https://discord.com/channels/188630481301012481/188630652340404224/1154367700378865715

and then rediscovered again during work on
https://github.com/ppy/osu/pull/26405:

    https://gist.github.com/bdach/414d5289f65b0399fa8f9732245a4f7c#venenog-on-ultmate-end-by-blacky-overdose-631

It so happens that in stable, due to .NET Framework internals, float
math would be performed using x87 registers and opcodes.
.NET (Core) however uses SSE instructions on 32- and 64-bit words.
x87 registers are _80 bits_ wide. Which is notably wider than _both_
float and double. Therefore, on a significant number of beatmaps,
the rounding would not produce correct values due to insufficient
precision.

See following gist for corroboration of the above:

    https://gist.github.com/bdach/dcde58d5a3607b0408faa3aa2b67bf10

Thus, to crudely - but, seemingly accurately, after checking across
all ranked maps - emulate this, use `decimal`, which is slow, but has
bigger precision than `double`. The single known exception beatmap
in whose case this results in an incorrect result is

    https://osu.ppy.sh/beatmapsets/1156087#osu/2625853

which is considered an "acceptable casualty" of sorts.

Doing this requires some fooling of the compiler / runtime (see second
inline comment in new method). To corroborate that this is required,
you can try the following code snippet:

    Console.WriteLine(string.Join(' ', BitConverter.GetBytes(1.3f).Select(x => x.ToString("X2"))));
    Console.WriteLine(string.Join(' ', BitConverter.GetBytes(1.3).Select(x => x.ToString("X2"))));
    Console.WriteLine();

    decimal d1 = (decimal)1.3f;
    decimal d2 = (decimal)1.3;
    decimal d3 = (decimal)(double)1.3f;

    Console.WriteLine(string.Join(' ', decimal.GetBits(d1).SelectMany(BitConverter.GetBytes).Select(x => x.ToString("X2"))));
    Console.WriteLine(string.Join(' ', decimal.GetBits(d2).SelectMany(BitConverter.GetBytes).Select(x => x.ToString("X2"))));
    Console.WriteLine(string.Join(' ', decimal.GetBits(d3).SelectMany(BitConverter.GetBytes).Select(x => x.ToString("X2"))));

which will print

    66 66 A6 3F
    CD CC CC CC CC CC F4 3F

    0D 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00
    0D 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00
    8C 5D 89 FB 3B 76 00 00 00 00 00 00 00 00 0E 00

Note that despite `d1` being converted from a less-precise floating-
-point value than `d2`, it still is represented 100% accurately as
a decimal number.

After applying this change, recomputation of legacy scoring attributes
for *all* rulesets will be required.
2024-01-10 19:30:18 +01:00
Dan Balasescu
6b4b2a57fc
Expose only as one method 2023-12-21 14:58:23 +09:00
Dan Balasescu
4e3b994142
Relocate HitResult numeric score to ScoreProcessor 2023-12-21 14:52:31 +09:00
Dan Balasescu
30116512ca
Populate MaxCombo scoring attrib for non-osu rulesets 2023-12-18 12:01:51 +09:00
Dan Balasescu
c255339999
Merge branch 'master' into catch-hyperdash-stable-sort 2023-12-13 12:40:39 +09:00
Bartłomiej Dach
0652ea316d
Merge branch 'master' into catch-hyperdash-stable-sort 2023-12-04 09:05:42 +01:00
Zyf
71e5654b64 Account for legacyAccScore in score conversion 2023-11-24 23:07:27 +01:00
Dan Balasescu
bbe9d95b3d
Merge branch 'master' into catch-hyperdash-stable-sort 2023-10-04 20:38:08 +09:00
Dan Balasescu
da2a4681d9 Add method to retrieve legacy score multiplier 2023-10-02 16:52:01 +09:00
Dan Balasescu
4e1800860e
Merge branch 'master' into catch-hyperdash-stable-sort 2023-09-19 10:10:57 +09:00
Dan Balasescu
2334be1987 Split legacy scoring attributes into a separate object 2023-09-07 21:10:38 +09:00
Dean Herbert
1629024111 ILegacyScoreProcessor -> ILegacyScoreSimulator 2023-07-04 17:32:54 +09:00
Dan Balasescu
09bc8e45de Refactoring 2023-06-28 16:14:32 +09:00
Dan Balasescu
5f350aa66f Fix float division
Firstly, this is intended to be a float division.

Secondly, dividing integers by 0 results in an exception, but dividing
non-zero floats by 0 results in +/- infinity which will be clamped to
the upper range.
In particular, this occurs when the beatmap has 1 hitobject (0 drain
length).
2023-06-27 17:14:35 +09:00
Dan Balasescu
a9c65d200a Initial conversion of scores 2023-06-26 22:19:01 +09:00
Dan Balasescu
06565871d6 Add flag to disable computing legacy scoring values 2023-06-24 01:03:18 +09:00
Dan Balasescu
87447f41d0 Fix incorrect calculation of difficulty 2023-06-24 00:58:45 +09:00
Dan Balasescu
bfa449e47a Adjust attribute data 2023-06-19 21:38:13 +09:00
Dan Balasescu
3ec97121e1 Add ScoreV1 calculation for CatchRuleset 2023-06-13 19:41:39 +09:00
Dan Balasescu
e402c6d2b4 Write max combo attribute from base class 2023-06-02 21:53:25 +09:00
ekrctb
491ba13b6f Factor out palpable obejct enumeration logic 2023-02-03 14:07:21 +09:00
ekrctb
3ab3f556ae Remove #nullable disable from Catch.Difficulty 2023-01-15 17:29:32 +09:00
Dean Herbert
aca19a005e Add versioning to difficulty calculators 2022-07-21 18:15:25 +09:00
Dan Balasescu
0fd2c010e5 Remove NRT disables from attributes classes 2022-06-27 16:07:15 +09:00
Dan Balasescu
0579780bb8 Add IBeatmapOnlineInfo parameter and use to extract more data 2022-06-27 16:07:15 +09:00
Dan Balasescu
f8830c6850 Automated #nullable processing 2022-06-17 16:37:17 +09:00
Dan Balasescu
6d2a2ba7d6 Rename Position -> Index 2022-06-09 18:49:11 +09:00
apollo-dw
66a6467403 Pass object position to the object 2022-05-26 19:26:14 +01:00
apollo-dw
30b9e0e7ab Use object list size for object position 2022-05-24 16:30:25 +01:00
apollo-dw
26985ca8af Store hitobject history in the hitobject 2022-05-22 16:26:22 +01:00
Dan Balasescu
523f668c8c Remove unnecessary ctor argument 2022-03-15 12:37:39 +09:00
Dan Balasescu
4a3e3aba65 Restructure PerformanceCalculator to not require ScoreInfo argument 2022-03-14 14:25:28 +09:00
Dan Balasescu
84e82ef5e4 Add XMLDocs to difficulty attribute properties 2022-02-16 14:09:19 +09:00
StanR
40b3ce0ade Clean up comments 2021-12-21 14:03:24 +03:00
StanR
cca02a8016 Create PerformanceAttributes 2021-12-21 13:08:31 +03:00
StanR
2f2006715e Slightly refactor difficulty and pp calculators 2021-12-17 23:40:23 +03:00
Dean Herbert
9f688f6291 Stop persisting Skills in DifficultyAttributes 2021-11-21 12:15:32 +09:00
Dean Herbert
fd0cae2bfb
Merge branch 'master' into difficulty-attribute-helpers 2021-11-17 20:49:31 +09:00
Dan Balasescu
815179f713 Use consts for attribute IDs 2021-11-17 20:31:18 +09:00
Dean Herbert
369b4ba789 Update DifficultyCalculator to take an IRulesetInfo 2021-11-15 19:16:48 +09:00
Dean Herbert
62d670a3ca Update DifficultyCalculator to take an IWorkingBeatmap 2021-11-15 19:16:48 +09:00
Dan Balasescu
c8a01c35f7 Remove extra members from FromDatabaseAttributes 2021-11-15 18:11:07 +09:00
Dan Balasescu
0cfd6fdf04 Add to/from database mapping functions to difficulty attributes 2021-11-15 16:06:50 +09:00
Dan Balasescu
907499f73a Add json properties to difficulty attributes 2021-11-15 16:06:29 +09:00
Dean Herbert
6944151486 Apply batch fixing of built-in types using var 2021-10-27 13:04:41 +09:00
Dean Herbert
b339c149d8 Copy BaseDifficulty to Beatmap<T> and move all write operations across 2021-10-06 15:10:45 +09:00
Dean Herbert
05996cc2e9 Add changes that got forgotted in branch surgery 2021-10-01 17:04:53 +09:00
Dean Herbert
16e60eed56 Reduce NestedHitObject enumerator overhead
This was especially bad due to it allocating on any and every start time
change, even the first (see usage in `HitObject.ctor`).
2021-09-20 15:09:27 +09:00
Xexxar
176b3e7533 changed decay system to allow for customizing the currentStrain 2021-08-16 22:14:29 +00:00