Time for action – creating the PlayerManager class

1. Add a new class called PlayerManager to the Asteroid Belt Assault project.

2. Add the following using directives to the top of the class file:

   using Microsoft.Xna.Framework;
   using Microsoft.Xna.Framework.Input;
   using Microsoft.Xna.Framework.Graphics;

3. Add declarations to the PlayerManager class:

   public Sprite playerSprite;
   private float playerSpeed = 160.0f;
   private Rectangle playerAreaLimit;
   
   public long PlayerScore = 0;
   public int LivesRemaining = 3;
   public bool Destroyed = false;
   
   private Vector2 gunOffset = new Vector2(25, 10);
   private float shotTimer = 0.0f;
   private float minShotTimer = 0.2f;
   private int playerRadius = 15;
   public ShotManager PlayerShotManager;

4. Add a constructor to the PlayerManager class:

   public PlayerManager(
       Texture2D texture,
       Rectangle initialFrame,
       int frameCount,
       Rectangle screenBounds)
   {
       playerSprite = new Sprite(
           new Vector2(500, 500),
           texture,
           initialFrame,
           Vector2.Zero...