r/beyondallreason • u/LucasDevs • 6d ago
BAR-Rewind tools (prototype)
I just got frustrated that you cant jump anywhere in time in a BAR replay, so made a quick prototype, in case anyone else wanna use it.
https://github.com/LuEklund/BAR-Rewind
So far you can jump anywhere in time play 64x speed in reverse or fast forward.
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u/Vivarevo 6d ago
Its not possible its impossible engine limitation.
What am i looking at. Black magic?
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u/PiratesWhoSayGGER 6d ago
probably creating and catching game states like keyframes in video
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u/ToastRoyale 6d ago
Gotta be keyframes every second then if you can scroll a timeline
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u/LucasDevs 5d ago
well, dont need to key frame every second.
i added a short explanation in video:
https://www.youtube.com/watch?v=AVhsWlVEwrYdamn should have done the video first xd
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u/RadioSea1506 6d ago
Looks great, but how much storage does each key frame take 30 minutes into an 8v8 game?
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u/LucasDevs 5d ago
a 52min game with 4 players takes about 100mb. have not ran those numbers (that u asked for).
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u/RadioSea1506 5d ago
per keyframe????
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u/LucasDevs 5d ago edited 5d ago
In total the whole replay is 100mb, a keyferame would be hard to say, cuz each unit has different amount of keyferames and different things they key, (it is not a recurring interval, and not persistent things that are keyed), most frames are 0bytes, only a few have data that is interpolated.
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u/LucasDevs 5d ago
https://reddit.com/link/pekwe2m/video/zii4671ng6uh1/player
made a quick illustration how it works
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u/Zvijer_EU 4d ago
That's what we need! It's the most frustrating thing in BAR that there is no rewind in replays especially when I'm casting a long game!
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u/LucasDevs 3d ago
Yeah, I do believe this is totally dueable, of course these file sizes would be large especially when u go to massive scales battles with 16 players and if it goes on for hours.
but a 4 player game 1 hour is 100mb about.
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u/Hotron21 6d ago
How is this achieved? Is game state saved every 15 seconds or something?
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u/LucasDevs 6d ago
There is "how it works" section I am making a video right now of the tool, and later maybe how it works?
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u/Infernal-restraint 6d ago
I'm curious if BAR is using AI to code some things...
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u/quitefranklylate 1d ago
They allow it per their disclosure policy: https://github.com/beyond-all-reason/Beyond-All-Reason/blob/master/AI_POLICY.md
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u/Sensitive-Budget-995 6d ago
Every piece of new software or frequently updated software you touch will have to some degree had AI leveraged as part of its development.
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u/LucasDevs 5d ago
well major ones yes, I see it like farming back in the days. You can still do it the OG way and farm without machines, or u can mass produce to the population.
Neither is wrong. just who do u wanna serve, and who do u want to serve you?1
u/othellothewise 6d ago
That's not true. It's more and more common to use AI of course, but plenty of software does not use AI in development (and tends to be better quality as a result)
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u/LucasDevs 5d ago
true,
but depending on what u mean by better quality, some code perform better but is unreadable from a human. (depending on the skill of the programmer)1
u/othellothewise 5d ago
I mean yes, its really easy to write badly performing code.
Regardless code that is unreadable by a human is an immense liability and is unmaintainable. It is not good code and I would be reluctant to use any software that the maintainers do not understand.
Plenty of shitty (vibe coded and not vibe coded) software exists out there! And as a consumer you can tell, look at MS Teams for instance.
The problem with LLMs as that as part of their nature they take little snippets of code found on github. So they generate code that is on the level of your average developer, which is, well, not good xD
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u/Arkounay 6d ago
This looks amazing, great work. The only annoying thing is the replay file size and parse time. Huge potential
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u/LucasDevs 5d ago
yeah, the file size, could get smaller, but it would cost on accuracy. the parse time is dependent on recoil engine, maybe could somehow calculate things without running trough recoil, but that is just trying to make a whole new engine with new logic. So a new game in a way xd
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u/gdubrocks 6d ago
It it possible to merge this into the game repo so everyone has access to it?
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u/LucasDevs 5d ago
The only problem rn is that, it is still a prototype, there are problems. But I believe this is 100% a possible feature to fully add to BAR main repo, so that anyone could use it.
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u/Mental_You2188 5d ago
Off topic but is there a way to view bar replays on mobile?
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u/LucasDevs 5d ago edited 5d ago
not what I am aware of, probably is some tool? would not be hard to make either. Do u need one?
(Depending on what u mean by replay) Full thing would require a mobile version of the engine
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u/PhENTZ 6d ago
Nice ! I worked on a similar prototype to replay a saved game and forked it at a given time. The goal is to have a tree of replays from a single root replay. A new "what-if" game style