import { useEffect , useRef } from 'react' ; import { PositionalAudio } from '@react-three/drei' ; import { useFrame } from '@react-three/fiber' ; import type { PositionalAudio as PositionalAudioImpl } from 'three' ; import { mutation , useStore } from '../../store' ; export const BoostAudio = ( ) => { const ref = useRef < PositionalAudioImpl > ( null ) ; const [ boost , maxSpeed , sound ] = useStore ( ( { controls : { boost } , vehicleConfig : { maxSpeed } , sound } ) => [ boost , maxSpeed , sound ] ) ; useFrame ( ( ) => { const rate = Math . pow ( mutation . speed / maxSpeed , 1.5 ) + 0.5 ; ref . current ?. setVolume ( rate * 1.5 ) ; ref . current ?. setPlaybackRate ( rate ) ; if ( ! mutation . boost && ref . current ?. isPlaying ) ref . current . stop ( ) ; } ) ; useEffect ( ( ) => { if ( ref . current && sound ) { const isBoosting = boost && mutation . boost > 0 ; if ( isBoosting && ! ref . current . isPlaying ) ref . current . play ( ) ; if ( ! isBoosting && ref . current . isPlaying ) ref . current . stop ( ) ; } return ( ) => { if ( ref . current && ref . current . isPlaying ) ref . current . stop ( ) ; } ; } , [ boost , sound ] ) ; return < PositionalAudio ref = { ref } url = "/sounds/boost.mp3" distance = { 5 } / > ; } ;