Is quarter circle DI in Brawl?
http://www.youtube.com/watch?v=OWAjYxGTmr4
the last one, "Major European DI" is quarter circle smash DI...does this exist? maybe it is related to what you're talking about, Delorted
That video is fake, I believe. It looks like they changed the damage ratio. Either that, or he crouch canceled and then smash DIed up and right.
When you're hit, you go into
hitlag. During hitlag, any input you have is registered and changes your
trajectory (NOT DISTANCE). When you hit the stick in a direction from the
neutral position, this creates what we call
smash DI, or SDI for short.
So you have normal DI, which is just holding a stick.
Smash DI, which is smashing the stick the moment you get hit.
And something called "Automatic DI", which is simply holding the stick before you get hit. This is the weakest form of DI, as you are not hitting it from the neutral position during hitlag.
What "quarter circle" DI is is simply a lot of different inputs on normal DI done very quickly. If you have, say, 18 frames of hitlag (like Samus' charge shot from Melee) and you rotate the stick, each individual location of the control stick would be registered. If you hit a direction on each frame and went back to neutral between hits, you could actually go the opposite direction.
To put it into perspective how fast you need to do this, each frame is 1/60th of a second, and samus' charge shot at full blast gave you 18 frames (meaning 18/60ths of a second) to DI.
I'm unsure of how many frames of hitlag you receive from some attacks, but most single hit attacks don't allow you to DI as much. Multi-hit attacks give you ample time to SDI repeatedly, generally once per hit, which allows you to move your character even though they are technically paralyzed.