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Mapset Verifier | A modding tool for osu!

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Naxess
Greetings,

Would recommend looking at the github README, has much of the same stuff as here but updated.

Background
So over the years our current tools have started getting a bit out of date, especially with all the recent updates to the Ranking Criteria. With none of them being open source, and since closed or abandoned, it's pretty difficult to just fix them or add things to them. As a result of this, I decided to make Mapset Verifier about 1 or 2 years ago.

Introduction
Mapset Verifier saves you from much of the tedious checking required for a beatmap to be ranked, making it a way less time consuming and unrealistic process. Many rules in the Ranking Criteria are straightforward, but with how many there are and how you just do the same thing on each map, this becomes super slow and gets repetitive real quick. Luckily, many issues are rare, so you'll often get away with just checking a few things in a more reasonable amount of time, but risk overlooking obvious things doing that.

This is solved by automatic checking, in the same way AiMod and Modding Assistant work. Of course, not everything can be checked this way. Things like metadata and timing are a bit too complicated to fully cover with a program, but about half of the Ranking Criteria can be covered this way, which is pretty good.



Goal
This aims not only to provide us with an up to date and open source modding tool, but also one which we can expand upon and use long-term. It supports check plugins which can be added to a folder to be loaded in the same way the default checks are, so if something is missing or I ever abandon this for some reason, the community can still continue adding things to it.

Features
Apart from being able to check stuff:
  1. Automatic song folder detection
  2. Automatic snapshots
  3. Automatic updates
  4. Integrated documentation
  5. Changeable difficulty interpretation
  6. Verbose mode (minor issues)
  7. Plugin support (add check DLLs to %APPDATA%/Mapset Verifier Externals/checks)
  8. Open source (see MapsetParser, MapsetChecks, etc)

Checks
All checks from Modding Assistant (apart from a few less useful ones) have been re-made for Mapset Verifier, fixing a few false positives and updating things in the process. You can find a full list of checks both in the application and on github. Currently (as of 2019-08-05), these are the checks included:

General
  1. (Resources) Missing background.
  2. (Resources) Too high or low background resolution.
  3. (Resources) Multiple videos.
  4. (Resources) Too high sprite resolution.
  5. (Resources) Inconsistent video offset.
  6. (Resources) Too high video resolution.
  7. (Metadata) Additional markers in title.
  8. (Metadata) Inconsistent metadata.
  9. (Metadata) Incorrect marker format.
  10. (Metadata) Incorrect marker spacing.
  11. (Metadata) Unicode in romanized fields.
  12. (Metadata) Incorrect format of (TV Size) / (Game Ver.) / (Short Ver.) in title.
  13. (Files) Unused files.
  14. (Files) Issues with updating or downloading.
  15. (Files) 0-byte files.
  16. (Audio) Audio channels in video.
  17. (Audio) Too high or low audio bitrate.
  18. (Audio) Delayed hit sounds.
  19. (Audio) Incorrect hit sound format.
  20. (Audio) Imbalanced hit sounds.
  21. (Audio) Too short hit sounds.
  22. (Audio) Multiple or missing audio files.

All Modes
  1. (Timing) Two inherited or uninherited concurrent timing lines.
  2. (Timing) First line toggles kiai or is inherited.
  3. (Timing) Inconsistent uninherited lines, meter signatures or BPM.
  4. (Timing) Unsnapped kiai.
  5. (Timing) Inconsistent or unset preview time.
  6. (Timing) Unsnapped hit objects.
  7. (Timing) Unused uninherited lines.
  8. (Timing) Wrongly or inconsistently snapped hit objects.
  9. (Spread) Lowest difficulty too difficult for the given drain/play time(s).
  10. (Settings) Abnormal difficulty settings.
  11. (Settings) Inconsistent mapset id, countdown, epilepsy warning, etc.
  12. (Settings) Slider tick rates not aligning with any common beat snap divisor.
  13. (Hit Sounds) Low volume hit sounding.
  14. (Events) Breaks only achievable through .osu editing.
  15. (Compose) Abnormal amount of slider nodes.
  16. (Compose) More than 20% unused audio at the end.
  17. (Compose) Concurrent hit objects.
  18. (Compose) Too short drain time.
  19. (Compose) Invisible sliders.

Standard
  1. (Timing) Hit object is slightly behind a line which would modify it.
  2. (Spread) Objects close in time not overlapping.
  3. (Spread) Multiple reverses on too short sliders.
  4. (Spread) Too short sliders.
  5. (Spread) Object too close or far away from previous.
  6. (Spread) Too short spinner time or spinner recovery time.
  7. (Spread) Perfect stacks too close in time.
  8. (Settings) Default combo colours without forced skin.
  9. (Settings) Too dark or bright combo colours or slider borders.
  10. (Hit Sounds) Long periods without hit sounding.
  11. (Events) Storyboarded hit sounds.
  12. (Compose) Perfectly overlapping combination of tail, head or red anchors.
  13. (Compose) Burai slider.
  14. (Compose) Too short spinner.
  15. (Compose) Obscured reverse arrows.
  16. (Compose) Offscreen hit objects.

Taiko
  1. (Timing) Hit object is slightly behind a line which would modify it.
  2. (Events) Storyboarded hit sounds.

Catch
  1. (Timing) Hit object is slightly behind a line which would modify it.
  2. (Hit Sounds) Long periods without hit sounding.
  3. (Events) Storyboarded hit sounds.

Mania
  1. (Hit Sounds) Long periods without hit sounding.

Current taiko, catch, and mania checks are not specific to those modes, they just don't fit into All Modes due to one or more modes being excluded for the respective checks.

Examples of fixed false positives/negatives

Modding Assistant
  1. counting extended break times as drain time.
  2. failing to account for minimum SV (0.1x).
  3. misinterpreting hit sounds on slider bodies as hit sounds on heads/tails.
  4. completely ignoring storyboard variables and animation frames.

AiMod
  1. failing to detect unsnaps when they are 2 ms too early.
  2. not accounting for stacking.
  3. using a vastly outdated star rating system, saying you need an easy/normal when you already have one.
  4. using inaccurate playfield measurements to detect offscreen hit objects.

Download (.exe for windows 32/64-bit, tar.gz for linux 64-bit, will look into mac later)
^ Get the .exe file (other stuff is for auto updating) and run through setup.
Windows & anti-virus programs might freak out at the file being uncommon/new, but that's normal.

Bug Reports
Contact me on discord Naxess#7180 (if you don't have me you can always join the Aiess Project), if you find anything that definitely shouldn't happen, like there being red text over the whole screen saying that something went wrong or the program suddenly not working after clicking on a map. Give reproduction steps (what you did before stuff broke), link map involved if any.

Note
  1. Always use your own judgment. False positives and negatives may exist (as with any modding tool), meaning some detections will happen even if they shouldn't and visa versa.
  2. Game modes apart from standard do not have star ratings implemented and don't have specific checks either by default. The tool can still be used to check for general/all mode things like audio/metadata/files/unsnaps etc, though.
  3. Do be careful about which check plugins you use, as they can be malicious. The plugins are executed by the backend of the application, so they can pretty much do anything the rest of the application can.

Thanks to TrippinBeats, Alphabet, Uberzolik, Nyxa, yaspo, and people from NAT for helping with testing & feedback / making sure my checks make sense / saving me from going insane when writing all the documentation.
radar
YESsssssetyesysssss oooooh yeseessssssssss
celerih
Bless
Petal
poggers lads now i can yolo more
Ham178
This is gonna be REALLY helpful to mappers, thanks for this tool!
hypercyte
god bless naxess
Mirash
good, thank you
AyeAries
wow nice good job for making this thing owo)b
DeletedUser_12001243
annndddd it checks audio i love you naxess
Fisky
fuck yea more mapping tools!!
AncuL
now i understand why Naxess is NAT with basically 0 submitted maps
Sotarks
MA IS GONE, GOD BLESS YOU NAXY ♥
Nelly
perfection
Frakturehawkens
Very interesting. Could you compile it for 32-bit version in future, please??
-Mikan
woah
Hantrik
My map widepeepooHappy
Maze
That's pretty epic ngl
smozit
cool
iljaaz
holy pog
Raytoly
owo
Yorita Yoshino
thanks owo
btw how to make it show on my desktop instead of just being in the resource manager ;(
Nerova Riuz GX
Naxess is god...well, yes.
Carcinogenesis
thank you
Cami
Naxess is not a god, he's something even higher
Shii
Oli and Naxess making these great mapping/modding applications, what a time to be a part of the mapping community :D
skylaa
thank you so much for this!
Eni
Hey this is very nice! Thank you! :)
Affirmation
Wew, looks nice!
UndeadCapulet
this is awesome, thanks a ton for all your hard work!
bossandy
holy it is awesome! Thanks so much!!!!!!!!
Jemzuu
we dont deserve this man
spboxer3
Tho I'm almost afk for mapping, I still marked this in my bookmark. Thanks Naxess!
[Crz]Alleyne
Pretty cool. Thanks :)
OliBomby
I was about to start making a modding assistant myself but it seems you beat me to it.
This looks really good. Keep up the good work!
LMT
this is awesome, thanks Naxess!!
Underforest
I was waiting for this. Really useful tool :)

Thank you Naxess
Pennek
YES PLEASE, NAXESS !!
Andrea
This is awesome <3
Striderin
This is super hype
Du5t
This tool is awesome thanks a lot!
Civil oath
:eyes:
Smokeman
you can't write naxess without sex.
defiance
bless naxess
-Liban-
POG
Agatsu
i love you naxess
thank you for this modding tool <3
iYiyo
Christmas came earlier. Thanks Naxess!
Aistre
Awesome tool, glad to see you managed to finish it
Trynna
pog i like it
Awfulness
ty
Hari
thank you!
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