confetti modifier

Confetti.kt

fun Modifier.confetti(
    // all your parameters to set up the modifier
) = composed { // the composed function gives you a composition on each composable where this modifier is used
    // remeber any state you need here
    var confettiState by remember {
        mutableStateOf(
            ConfettiState(
                // parameters to setup the state
            )
        )
    }

    LaunchedEffect(isVisible) {
        while (isVisible && isActive) {
            withFrameMillis { newTick ->
                // this side effect will return a tick every frame giving 
                // the elapsed time since the previous frame
                // This would be the place where you move the particles
            }
        }
    }

    onSizeChanged {
        // do what you need to do if the size changes
    }.drawBehind {
        // this is where you can draw behind what ever composable content. 
        // It proveds a drawScope with a canvas which you can use
        // e.g. loop through the particles and draw them
    }
}