This is a Tool-Assisted Speedrun

Runner: Zero-Master
Date: 2021-02-06
IWAD: Doom2.wad
Category: UV-Speed TAS
Map: 10 (Refueling Base)
Tools: XDRE 2.21
Time: 11.97

Description:
The hardest void glide ever discovered.

I have long suspected that a void glide might have been possible here. However, none of the walls have anything in common with any void glide ever done before, so it wasn't too unreasonable to assume it might just be impossible.

The recent Courtyard void glide through the door however showed what a larger momentum boost can do which gave hope for these types of angles. Since the wall isn't axis aligned it extends the required distance for doomguy to move before he no longer overlaps with the wall, in this case by at least 16/104*32 (=4.923) units. So the total distance to move is 36.923 units if one could somehow move exactly along the x axis to the left.

What usually happens when you perform a void glide is that you move very fast in both the X and Y direction, in this case you have to move in the negative x and negative y direction and the void glide might be impossible if you too far in the negative y direction as it extends the required movement in the negative x direction by too much. But it turns out that there is a coordinate that actually allows for movement only along the negative x direction, which is if doomguys upper right corner is perfectly on top of the corner vertex.

However, that is only half the story. If you were to place yourself at this exact position you would have no way to be able to build up momentum towards the wall you are trying to go through, as any movement would slide you along the wall itself. There is of course only one solution to this, which is to have something block your movement, namely a monster. Though the massive problem is that it's incredibly difficult to manipulate monster movement to such precision. You don't want the monster to block the position you are trying to reach, and if it is a small distance away then you will always slide along the wall.

Trying to pull this off with monsters was complete hell. Geting anything to stand in a certain area is extremely annoying, and then having to check over and over again if you can move yourself to the exact coordinate while getting punched in the face only adds to the frustration. But, with enough dice rolls it eventually worked.

So with the perfect position and the momentum buildup doomguy here moves a distance of 36.936 units, only 0.013 units above the minimum requirement, and goes through the wall. This is basically impossible without TAS.

I still have some new tricks to show off that I discovered several months ago for ultimate doom, but it'll be part of a longer TAS demo, which I hope to finish some day.

Thanks for watching.

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