useGamepadTrigger

Reactive analog accessor in 0..1 for a button's pressure. For triggers (typically buttons 6 and 7 on a standard mapping) it's the live pressure; for plain digital buttons the value tracks the boolean (0 released, 1 pressed) — for those prefer the boolean useGamepadButton. Part of pota/use/gamepad.

Arguments

Argument	Type	Description
buttonIndex	number	Button index (e.g. 6 left trigger, 7 right).
gamepadIndex	number	Gamepad index. Default is 0.

Returns: () => number — a reader function you can pass straight into JSX as a reactive child or value.

Examples

Trigger pressure bar

Reads the left trigger and renders its 0..1 pressure as both a percentage label and the width of a fill bar. The reader function drives the reactive width style and the live text.

import { render } from 'pota'
import { useGamepadTrigger } from 'pota/use/gamepad'

function App() {
	const lt = useGamepadTrigger(6)

	return (
		<div style={{ width: '200px', border: '1px solid #888' }}>
			<div
				style={{
					height: '16px',
					background: 'seagreen',
					width: () => lt() * 100 + '%',
				}}
			/>
			<p>Left trigger: {() => Math.round(lt() * 100) + '%'}</p>
		</div>
	)
}

render(App)