Question

My countdown gets updated every second using my InGameTime value that is updated every frame.

This works great visually because I can just round the game time to the nearest int.

…But how do I get my app to play a beep after each second?

Below is my code:

-(void) setTimer:(ccTime) delta{

    int timeInSeconds = (int)appDelegate.InGameTime;//Game time E.G: 8.2332432
    /*

            Stuff is here to display the tempTime

    */


    //The below effect plays the sound every frame, 
    //is there an equation that I can apply to appDelegate.InGameTime 
    //that will play it once a second?

    [[SimpleAudioEngine sharedEngine] playEffect:@"tick.mp3"];

}

Answer 1

-(void) setTimer:(ccTime) delta{

    static float timeSinceLastTick = 0.f;

    int timeInSeconds = (int)appDelegate.InGameTime;//Game time E.G: 8.2332432
    /*

        Stuff is here to display the tempTime

    */

    // if your delta is small and relatively constant, this 
    // should be real close to what you want.
    // other ways exist

    timeSinceLastTick += delta;
    if (timeSinceLastTick > 1.0f) {
       timeSinceLastTick=0.f;
       [[SimpleAudioEngine sharedEngine] playEffect:@"tick.mp3"];
    }

}