How can I play a sound in sync with a countdown?

Questions & Answers
1

I am trying to make a sound play based on the time left before a grenade explodes. When the boolean “pinPulled” is set to true a float starts counting down from 3.5 seconds. I would like the sound to play once every second until the last second when I want the sound to loop, so it beeps at a faster rate. Because there are other sounds that also use this audio source (grenade explosion sound, grenade throw sound etc), I assign the grenade beep sound dynamically before playing it. Below is a part of the script, the sound gets assigned properly based on the time but for some reason it doesn’t actually play. Any ideas how I should do this?

I’ve also tried using Invoke, yield waitforseconds and a while loop but they all give inconsistent timing.

2

The problem is that you’re calling Play repeatedly when fuseTimer is lower than 2.5s: Play restarts the sound each time it’s called, thus if the sound has an initial pause or a slow attack nothing will be heard. You could call Play only once each time you cross a limit, like this:

var pinPulled : boolean = false;
var fuse : float = 3.5;
var fuseTimer : float = 0;
var grenadeBeep : AudioClip;
private var nextTime : float = -1; // declare this variable outside any function

//If a grenade's pin has been pulled, start the countdown
if (pinPulled) {
   fuseTimer -= Time.deltaTime;
}
else { // pin in place: reset fuseTimer and nextTime
   fuseTimer = fuse;
   nextTime = fuseTimer - 1.0; // first tick one second after pin pulled
}

if (fuseTimer <= nextTime) { // it's time to tick:
   nextTime = fuseTimer - 1.0; // set next tick to 1 second ahead
   if (nextTime < 0){ // if entered fast range (last second), set loop
       audio.loop = true;
   }
   audio.clip = grenadeBeep;
   audio.Play(); // call Play only once
}