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Sliders can glitch and become reversed on the timeline [confirmed]

posted
Total Posts
10
ryza
679 posts
Joined October 2011
Topic Starter
ryza
Yeah, I think I found a bug

this probably isn't very important, I don't even know how this happened, I assume the slider got /placed/ on the timeline somehow.

images


see how the notes stack - as if they were placed on the map. Normally, notes at the same time would overlap perfectly

this is the code for the slider:
392,128,64813,2,0,P,31,37.5


to reproduce:

DL this map - http://osu.ppy.sh/s/72499

make a new difficulty with this code:

code
osu file format v11

[General]
AudioFilename: !!  [EXH].mp3
AudioLeadIn: 0
PreviewTime: 50938
Countdown: 0
SampleSet: Normal
StackLeniency: 0.7
Mode: 0
LetterboxInBreaks: 0

[Editor]
Bookmarks: 52138
DistanceSpacing: 0.7
BeatDivisor: 4
GridSize: 8

[Metadata]
Title:Koisuru*Uchuu Sensou!! Abababa Mix
TitleUnicode:恋する☆宇宙戦争っ あばばばみっくす
Artist:ARM (IOSYS)
ArtistUnicode:ARM (IOSYS)
Creator:Horo
Version:lol
Source:Sound Voltex Booth
Tags:denpa superior genre
BeatmapID:0
BeatmapSetID:-1

[Difficulty]
HPDrainRate:7
CircleSize:4
OverallDifficulty:5
ApproachRate:9
SliderMultiplier:1.5
SliderTickRate:1

[Events]
//Background and Video events
0,0,"21820310.png"
//Break Periods
2,40338,44038
2,44838,47788
//Storyboard Layer 0 (Background)
//Storyboard Layer 1 (Fail)
//Storyboard Layer 2 (Pass)
//Storyboard Layer 3 (Foreground)
//Storyboard Sound Samples
//Background Colour Transformations
3,100,255,128,255

[TimingPoints]
1738.54423790223,300,4,2,0,100,1,0
19288,-50,4,2,0,100,0,0
19738,-100,4,2,0,100,0,0
20488,-50,4,2,0,100,0,0
20938,-100,4,2,0,100,0,0
26938,-50,4,2,0,100,0,0
27388,-100,4,2,0,100,0,0
37138,-50,4,2,0,100,0,0
37738,-100,4,2,0,100,0,0
38938,-57.1428571428571,4,2,0,100,0,0
40138,-100,4,2,0,100,0,0
40138,-57.1428571428571,4,2,0,100,0,0
50938,-100,4,2,0,10,0,0
52138,-66.6666666666667,4,1,0,100,0,1
54388,-50,4,1,0,100,0,0
57988,-66.6666666666667,4,1,0,100,0,0
58588,-100,4,1,0,100,0,0
59338,-66.6666666666667,4,1,0,100,0,0
60538,-100,4,1,0,100,0,0


[Colours]
Combo1 : 26,255,255
Combo2 : 251,0,251
Combo3 : 255,255,128

[HitObjects]
392,128,64813,2,0,P,31,37.5

find the note in the map (this code has it at 65 seconds) and drag it along the timeline.

How to replicate:
Make a linear, 2-point slider with a redpoint at the end, use 1/16 snap, and drag the redpoint to a very specific depth and angle, such as in this screenshot:
Last edited by MillhioreF , edited 2 times in total.
TheVileOne
osu! Alumni
8,431 posts
Joined March 2010
TheVileOne
I discovered a glitched position for a slider the other day. It's only if you use a red point (old algorithm position slider) in a very specific way. It's probably not a big deal. I'll test your example though.


Interesting, you can drag it in both directions.
ryza
679 posts
Joined October 2011
Topic Starter
ryza
this probably isn't a big deal either. it just exists. aha
TheVileOne
osu! Alumni
8,431 posts
Joined March 2010
TheVileOne
i'll confirm as low priority. there's no point to having an invisible slider that cannot be hit.
MillhioreF
Pro Tester
5,004 posts
Joined July 2011
MillhioreF
This is the best thread title in this forum.
ryza
679 posts
Joined October 2011
Topic Starter
ryza
I knew you would appreciate this

that's why I posted it
MillhioreF
Pro Tester
5,004 posts
Joined July 2011
MillhioreF
It looks like this is happening because of a slider with only 1 point. I'm looking for a way to make this happen from ingame, rather than forcibly editing the .osu file.
TheVileOne
osu! Alumni
8,431 posts
Joined March 2010
TheVileOne
I know of a certain three point slider that will have a backwards extension when you try to scale it. It's only with an old slider algorithm shape.
TheVileOne
osu! Alumni
8,431 posts
Joined March 2010
TheVileOne
I just experienced this bug right now. I'm not sure how it happened, but I had several points some red, and I deleted points in a very peculiar way. It's a bit fuzzy on what I did, but I think I had the music scrolling while I was deleting points and I happened to delete/combine a couple points fastly, and it triggered this.
The code for the slider

156,236,97310,2,0,L|176:292|176:292,1,59.9999928474426

^It's weird that somehow the two points in the slider use the same coordinate.




I can replicate. I have a red point on the end, and the slider doesn't appear when the points are too close and it causes this at very specific diagonals. It happens at that diagonal in the screenshot either in that direction or the exact opposite or this angle There's actually 4 distinct angles where this happens.

I'm not sure if it matters but here's the BPM used

BPM 158
SV 0.8
MillhioreF
Pro Tester
5,004 posts
Joined July 2011
MillhioreF
Happens without any kind of timing point or .osu manipulation after all. Linear, 2-point sliders with a redpoint at the end have this problem at very specific locations and angles - follow TVO's screenshots for examples.
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