systems::gamepad Namespace Reference

Functions
float	normaliseAxis (Sint16 raw)
	Convert SDL's int16 axis value to a deadzoned float in [-1, 1].

Variables
constexpr float	k_stickDeadzone = 0.15f
	Stick deadzone as a fraction of full deflection.
constexpr float	k_triggerThreshold = 0.5f
	Trigger threshold for treating an analog trigger as "pressed".

Function Documentation

normaliseAxis()

float systems::gamepad::normaliseAxis ( Sint16 raw )

inline

Convert SDL's int16 axis value to a deadzoned float in [-1, 1].

Applies a radial deadzone and rescales so the live range is still [-1, 1] (otherwise full stick deflection would only feel like ~0.85 of the range).

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Variable Documentation

k_stickDeadzone

float systems::gamepad::k_stickDeadzone = 0.15f

inlineconstexpr

Stick deadzone as a fraction of full deflection.

Xbox 360 sticks notoriously drift around centre, so anything below this reads as zero. 0.15 is a conservative middle-ground that ignores drift without introducing perceptible "stick travel before motion".

k_triggerThreshold

float systems::gamepad::k_triggerThreshold = 0.5f

inlineconstexpr

Trigger threshold for treating an analog trigger as "pressed".

Triggers are 0..1 analog; we want a clear press semantic for fire / grapple (which are boolean in InputSnapshot). 0.5 matches the Xbox UI convention.