Stop sound looping / echoing in if/else statement

CS Discoveries Coding and Debugging Help
1

Help! I am working on CSD Unit 3 Lesson 18, creating an interactive card. I have an if/else statement inside the draw loop and want to play a sound when the mouse is down but I want the sound to stop when the mouse is not down. When I put the sound in the loop, and stop it in the else section, it does what I want, but it echoes and is awful to hear. When I put the sound outside of the draw loop, it plays correctly, but won’t stop. Any insight would be much appreciated!!

2

The reason it echoes like that is because playSound() always begins a new sound, so putting it in the draw loop means it starts the music from the beginning, 30 times a second. A trick to get around this is putting in a variable that is toggled on and off to determine when to play music. Try putting this at the beginning of your program:

var musicPlaying = false;

Then replace your playSound() function with this:

if (!musicPlaying) {
  playSound("Happy_birthday_to_you_MIDI(chosic.com).mp3");
  musicPlaying = true;
}

And finally, put this right after the stopSound() function:

musicPlaying = false;

Now the music will only play if playSound() has not already been called, so the music won’t repeat on itself.

2 Likes
3

This worked!! I didn’t see the “!” at first in if (!musicPlaying), but once I realized that, tried it and it’s good now. Thank you so much!!