Time for action – playing sound effects

To add a sound effects manager to Mars Runner, perform the following steps:

1. 1. Add a new using direction at the beginning of the MarsRunnerPlayScreen class to allow us to access the XNA Audio classes as follows:

   using Microsoft.Xna.Framework.Audio;

2. 2. In the LoadContent() method of the MarsRunnerPlayScreen class, load the sound effects and add them to the sound effect manager's dictionary as follows:

   SFXManager.AddEffect(
       "Explosion", content.Load<SoundEffect>(@"Sounds\Explosion1"));
   SFXManager.AddEffect(
       "Jump", content.Load<SoundEffect>(@"Sounds\Jump"));
   SFXManager.AddEffect(
       "PlayerShot", content.Load<SoundEffect>(@"Sounds\Shot1"));
   SFXManager.AddEffect(
       "EnemyShot", content.Load<SoundEffect>(@"Sounds\Shot2"));

3. 3. Inside the FirePlayerShot() method in the MarsRunnerPlayScreen class, call the SFXManager.Play() method just after resetting the playerShotTimer to 0.0f as follows:

   SFXManager.Play("PlayerShot");

4. 4...