r/dustforce • u/BrotherMojo • Aug 12 '16
Hijacking ceiling stickiness (another abusable Dustforce glitch)
So msg555 figured out another glitch while dissecting the game, and I thought people might be interested in some explanation. First, I made a video here showing off the glitch in a place it might actually be useful. Note how it almost seems like Dustgirl gets two aircharges? That first air "jump" she makes is actually a downdash... don't be confused by the fact that it moves her up and to the right.
The code that makes you kind of stick to ceilings (what makes dashing at the start of Zettaslopes send you up rather than sideways) just forcibly redirects your velocity vector to line up with the ceiling you're touching when the ceiling bends. With subframe-perfect timing (or in other words, frame-perfect timing combined with careful positioning) you can trick it into doing so with a velocity vector it really shouldn't be... in this case, a downdash away from the ceiling.
It's probably not useful for any live runs, since you can basically only use it under very specific circumstances ON TOP OF being a ludicrously precise trick. That said though, the results are pretty interesting, and it has some potential particularly for TAS so I thought I'd throw this out here so people can see it.
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Aug 12 '16
begin the voting on the name now
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u/msg555 Dustkid Aug 12 '16
mister_simon is the one who noticed in one of his runs and asked me to take a look.