## Link to GitHub Issue or related Pull Request, if one exists
Related to #181
## Description of change
This PR removes two features marked as "experimental" for analog axis -
`Delay` and `Relative Axis`.
They have been in spice as experimental option for almost 2 years.. but
they have a fundamental problem of being tied to how often the analog is
polled. Not just how often the game's I/O emulation code polls it, but
literally any source (spice API, overlay, etc).
For `Delay`, the only real usage I'm aware of is for #181 which is
delaying IIDX turntable input. For this, I will follow up with a
separate PR that adds back the delay option specifically for IIDX.
For `Relative Axis` - I'm not quite sure if any one actually uses this.
This could be implemented per-game if some game demands it. Polaris
Chord already has one, for example.
## Testing
## Link to GitHub Issue or related Pull Request, if one exists
n/a
## Description of change
Currently, all analogs are treated as circular values that wrap around.
This works for knobs and turntables, but can get weird for linear values
(like tilt sensors and sliders) especially once analog options are
enabled, such as sensitivity.
This PR groups analogs into 3 buckets: circular, linear (centered), and
linear (positive). Linear types get different algorithms applied to it
when options are set (e.g., sensitivity caps out at 0, 1 instead of
wrapping around).
In linear mode:
* Sensitivity value applies an exponential response curve (power curve)
to the original value.
* Multiplier/divisor serves as a linear cut-off.
* Relative mode works as you expect, but of course, values don't wrap
around.
* Invert and deadzone work as you expect (since they applied to the
controller input anyway)
* Smoothing is removed from the UI and has no effect.
* Delay is unaffected.
Also, fix a small bug with -/+ button not working for analog `Delay`
option.
## Testing
WIP
## Link to GitHub Issue or related Pull Request, if one exists
#616
## Description of change
`Naive` button is now called `Naive/XInput` and detects XInput
controllers
Add vibration output as "Lights"
Add proper hotplug support and multiple controllers
Fix misc bugs on x86
## Testing
I tested with two xbox controllers.
## Link to GitHub Issue or related Pull Request, if one exists
#616
## Description of change
Adds preliminary support for XInput controllers. Enough to manually bind
buttons and map analogs.
bicarus