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rawinput: reimplement analog relative mode and delay (#674)

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## Link to GitHub Issue or related Pull Request, if one exists
#181 

## Description of change
Implement analog relative mode and delay option using a new
millisecond-based algorithm.

## Testing
WIP
This commit is contained in:
bicarus
2026-05-04 22:50:11 -07:00
committed by GitHub
parent 5f94ef4478
commit 96950b6b4e
13 changed files with 250 additions and 132 deletions
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src/spice2x/overlay/windows/config.cpp
+34 -2
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@@ -2539,9 +2539,9 @@ namespace overlay::windows {
}
}
// hide deadzone for circular analog since it doesn't make any sense
// hide deadzone for circular analog since it doesn't make any sense (unless in relative mode)
if ((device->type == rawinput::HID || device->type == rawinput::MIDI) &&
analog.getType() != GameAPI::Analogs::AnalogType::Circular) {
((analog.getType() != GameAPI::Analogs::AnalogType::Circular) || analog.isRelativeMode())) {
auto deadzone = analog.getDeadzone();
// for back compat (before each analog had a type)
@@ -2585,16 +2585,46 @@ namespace overlay::windows {
if (analog.getType() == GameAPI::Analogs::AnalogType::Circular) {
// smoothing
bool smoothing = analog.getSmoothing();
ImGui::BeginDisabled(analog.isRelativeMode());
ImGui::Checkbox("Smooth Axis (adds latency)", &smoothing);
ImGui::SameLine();
ImGui::HelpMarker(
"Apply a moving average algorithm; intended for angular input (knobs, turntables). "
"Adds a slight bit of latency to input as the algorithm averages out recent input. "
"Only use in dire situations where the input is too jittery for the game.");
ImGui::EndDisabled();
if (smoothing != analog.getSmoothing()) {
analog.setSmoothing(smoothing);
}
// relative input mode
bool relative_analog = analog.isRelativeMode();
ImGui::Checkbox("Relative Axis", &relative_analog);
ImGui::SameLine();
ImGui::HelpMarker(
"Use relative directional input instead of positional values. "
"Can be used to translate analog sticks to knob input.\n\n"
"At default settings, max speed is one revolution per second.\n\n"
"Adjust sensitivity to increase/decrease max speed, and deadzone to prevent jitter.");
if (relative_analog != analog.isRelativeMode()) {
analog.setRelativeMode(relative_analog);
}
}
// delay
int delay = analog.getDelayMs();
if (ImGui::InputInt("Delay (ms)", &delay, 1, 1)) {
delay = std::clamp(delay, 0, 250);
analog.setDelayMs(delay);
}
ImGui::SameLine();
ImGui::HelpMarker(
"Adds an artificial delay, in milliseconds.\n\n"
"Value read by the game engine will be delayed AT MOST this amount of time (coould be slightly less).\n\n"
"To minimize quantization error, delay value should be a multiple of the game's poll rate, "
"add 0.5ms of buffer, and then round up to the nearest millisecond.\n\n"
"If you aren't sure, assume the game polls for input at the same rate as the display FPS."
);
}
}
@@ -5406,6 +5436,8 @@ namespace overlay::windows {
a.setInvert(ta.invert);
a.setSmoothing(ta.smoothing);
a.setMultiplier(ta.multiplier);
a.setRelativeMode(ta.relative_mode);
a.setDelayMs(ta.delay_ms);
::Config::getInstance().updateBinding(game, a);
break;
}