[TAS] The Ultimate Doom E1M8 UV Speed in 0:13.94 by almostmatt1
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Demo created (YYYY/MM/DD): 2022-11-09
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** .Txt File **
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THIS IS A TOOL-ASSISTED SPEEDRUN.
IWAD: The Ultimate Doom
Map: E1M8
Skill: Ultra-Violence
Category: UV-Speed
Exe: XDRE 2.22
Time: 0:13.94
Author: RockyGaming4725, almostmatt1
RockyGaming4725's comments: I found it was possible to actually stay on the ground for an extra tic before leaping to the door if you didn’t wallrun - leaving you with more momentum (and a wallrun of course). This allowed us to reach the door 2 tics faster. I then tried to get into the void one tic earlier but failed… sent it to Matt so he could have a look and he worked some magic to get it to work. Then, I saved another tic in the void, meaning it wasn’t even needed to try to get into the void one tic faster for 13 anyway!
almostmatt1's comments: A little while ago, both Rocky and I tried but weren't quite able to get 13 seconds so I'm quite happy to see this done!
This demo obviously doesn't use the recently discovered intercepts overflow trick and it may seem as though that's a missed opportunity leading to an inadequate demo but I'm not convinced that's the case. Rocky and I have not been able to get the bug to happen in a worthwhile way. Replicating the position that Zero Master found or a similar enough position is simple enough, but the problem is that it requires a pinky to move into the correct spot to work. RNG seed manipulation is not possible with CL3 (Ultimate Doom) demos like this, and manipulating it to happen as fast as possible through simply manipulating RNG by firing is quite a difficult thing to, so it takes a little while to activate the bug in the first place. On top of that, we wouldn't have reduced health from the barrel explosion so if we got the bug to happen and then got to the final room it would take some time for our health to deplete, especially since we can only take melee damage and not hitscan. Considering this, I would be happy to be proven wrong but it's not really apparent to me that the trick is the optimal way to do this demo, at least in a TAS context.
I think theoretically the perfect thing to happen would be to trigger the bug between taking damage from the barrel explosion and reaching the first door but getting the bug to happen at all is really, really hard. Maybe it'll happen some day, who knows.
What this demo DOES do compared to previous demos is hit the first door faster thanks to Rockys improved movement, get into the void a tiny bit faster and do the void section a little bit faster. Turns out all that was needed for a 13 was to improve what we had already done rather than chuck in something new. Thanks to Rocky for deciding to revisit this one.
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** Viddump & Upload Details **
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IWAD: The Ultimate Doom
Source Port: DSDA-Doom 0.26.2
Smooth Demo Playback: On
Smooth Demo Playback Factor: 2
Change Palette On Pain: Off
Use Extended HUD: Yes
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** Links **
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Demo File Link: https://dsdarchive.com/files/demos/doom/69321/e1m8x1394.zip
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