Well, if the frameskip pattern is consistent, then it's skipping every 4th frame or every 5th frame or whatever. (If you figure out the exact number, please let us know).Dammit wrote:jump on frame : air normal on frame : ground normal on frame
0 : 5 : 33
1 : 6 : 34
2 : 6 : 35
3 : 8 : 36
4 : 9 : 37
5 : 9 : 38
The startup for a jump takes 3 frames in 1 out of 3 cases, and 4 frames otherwise. The duration of the jump does not vary.
Let's say it's skipping every 5th frame. Then a true 3-frame move would sometimes occur in 3 turbo-speed frames and sometimes in 2 turbo-speed frames, depending on whether the skipped frame fell inside or outside of that 3-frame period.
However, a 15-frame move would always occur in 12 turbo-speed frames because:
If the 1st true frame gets skipped, then so do the 6th and 11th frames = 12 turbo-speed frames.
However, the 1st frame usually can't happen on a skipped frame because you don't have input access to that frame, unless you buffer it somehow.
If the 2nd true frame gets skipped, then so do the 7th and 12th frames = 12 turbo-speed frames.
If the 3rd true frame gets skipped, then so do the 8th and 13th frames = 12 turbo-speed frames.
If the 4th true frame gets skipped, then so do the 9th and 14th frames = 12 turbo-speed frames.
If the 5th true frame gets skipped, then so do the 10th and 15th frames = 12 turbo-speed frames.
Therefore, any true 15-frame move would always have the same frame count (of 12 frames) at 1/5F turbo speed. Even a true 16-frame move would usually have the same frame count (of 13 frames) at 1/5F turbo speed because there's no way to get the 1/6/11/16 combo without buffering the move into a dash or into jump landing recovery or something along those lines, depending on the game.
However, all true 12-frame, 13-frame, and 14-frame moves would fluctuate, turn into 9/10 turbo-speed frames or 10/11, or 11/12 respectively. You could even determine the likelyhood of getting the lesser number or the greater number by looking at the possibility chart above.
With respect to combos, generally the worst thing that can happen is for the frame after the move to get skipped. That's why moves whose true frame counts are integer multiples of your frameskip rate are your best friends. A true 15-frame move will never skip the 16th frame (the frame after recovery).