XNA SoundEffect won't stop playing

Question

For my HND I've got to re-create Frogger, and everything was going swell until I tried adding some collision detection and sound. Whenever my player intersects a vehicle, the sound file just starts playing with every game update instead of just once.

Here is my code from the update method:

            if (vehicles[count].bbox.Intersects(playerSprites[lives].bbox))
                playerSprites[lives].isDead = true;
        }

        if (playerSprites[lives].isDead)
        {
            deathSound.Play();
        }

The sound is declared as a SoundEffect, loaded as a SoundEffect, and the content processor is set to Sound Effect, and as far as I can tell, Sound Effects in XNA are only meant to be played once. What am I doing wrong??

Answer 1

Notice that you are launching a sound effect while the player is dead, not when the player died. The obvious solution would be to call your soundEffect.Play here:

if (vehicles[count].bbox.Intersects(playerSprites[lives].bbox)){
  playerSprites[lives].isDead = true;
  deathSound.Play();
  //and also disable further intersection tests with player bbox to launch this function
  //only once. You could modify it so that its area becomes zero
}