Add support for frame advance

[BLCRAFT210]

I would like to make a script that sets an input map, advances a frame or two, and then analyzes the graphical output before any further action. Is it possible to add a function that tells Dolphin to frame advance?

[Felk]

Hello,

I'm afraid I don't quite understand what you are asking, because advancing frames is already possible, either with await event.frameadvance() or event.on_frameadvance(some_callback), as described in the readme. The only known problem in that regard is #13
Is there anything in particular you are missing?

[BLCRAFT210]

These two functions wait for Dolphin to advance a frame and then execute some code. I'm looking for a function that will let me control when Dolphin will advance a frame. In other words, I'm looking for a function that will do the equivalent of pressing F with my Hotkey setup:

There would be no callback or async, it would just be something like event.advance_frame()

[Felk]

To better understand your usecase, what would the script be doing before advancing a frame? Is it waiting for a specific event? Would it be busylooping? And would you be running such a script while the game is paused?

[BLCRAFT210]

I'm working on a project that will take a video of a Mario Kart Wii time trial and try to produce the same exact run on Dolphin so that we can recover lost ghosts. My basic idea for how to implement this is the following loop:

1. Create a savestate of the current frame.
2. Try a likely input configuration and advance a frame (maybe two or more are necessary, I'll have to figure it out later).
3. Determine if Dolphin's output matches up with the video using computer vision.
4. If yes, then we have the input for that frame figured out. If not, then load the savestate of the original frame and try a different likely input configuration.

This is just a rough draft of my program, but I believe that a frame advance function is necessary for this loop.

[BLCRAFT210]

My project has changed at this point, but I would still like to be able to control frame advance.

[BLCRAFT210]

Hello,

I'm afraid I don't quite understand what you are asking, because advancing frames is already possible, either with await event.frameadvance() or event.on_frameadvance(some_callback), as described in the readme. The only known problem in that regard is #13 Is there anything in particular you are missing?

Never mind, I understand what you mean here. Dolphin already waits for scripting advancing a frame, so frame advance isn't needed.