Rudimentary Gamepad Recording and Loading Support for FlxReplay

[agmass]

Adds support for recording and loading gamepad inputs inside FlxReplay-s, so far only support button and analog inputs.
Analog Inputs are always recorded even when 0 which may cause a small jump in replay file size when having multiple gamepad inputs connected. There are a few areas where I touch FlxGamepad and FlxGamepadManager that could seem a bit sketchy, but i'm not aware of any other ways to get this to work. Tested on CPP and HTML5

[Geokureli]

Could you share a little test state that would allow me to verify its accuracy? Perhaps we can add Gampad controls to the Replay demo?

Analog Inputs are always recorded even when 0 which may cause a small jump in replay file size when having multiple gamepad inputs connected.

Could we get this to behave like keyboard? where zero values are ignored?

[agmass]

Could you share a little test state that would allow me to verify its accuracy? Perhaps we can add Gampad controls to the Replay demo?

I've been testing this on my own game with a bit more bloat, but here's a small video showing the system (the player marked in red is using a gamepad):

2025-01-05.19-54-42.mp4

The debug text on the right has a "Input" section showing the exact input from the gamepad/demo, as some are ignored

Could we get this to behave like keyboard? where zero values are ignored?

I realize I can just clear the axis array ever frame and leave out zero-d inputs from being saved, I'll try to make something now to get this working

[Geokureli]

Can you talk about why this is needed?

[agmass]

I'm editing the axis list upon playback (i'm not entirely sure if there's a better way to edit the axises of a gamepad, that's just what i was able to find) but if i don't specify the gamepad has to find it's axis from there, the gamepad will pull it directly from the input device. Along with this, the recording could double-up the axis flip as getAxisValue() flips it once during playback and could flip it again if called raw when recording. I wasn't sure if making a new variable inside FlxGamepad or making a new class overriding this was the better choice

[Geokureli]

Also can you post an example of the string data?

[agmass]

Also can you post an example of the string data?

after the commit trimming down the size by not including all axis, even when disabled

everything past "/" is axis output, everything before is button output. the key with no value at the start of the list is the gamepad's id