Time for action – implementing score tracking

1. Add a declaration to the Player class to store the player's score:

   private int score = 0;

2. Add a property to the Player class to allow access to the score variable:

   public int Score
   {
       get { return score; }
       set { score = value; }
   }

3. Replace the current Update() method in the LevelManager class with the following new version of the method:

   public static void Update(GameTime gameTime)
   {
       if (!player.Dead)
       {
           for (int x = gemstones.Count - 1; x >= 0; x--)
           {
               gemstones[x].Update(gameTime);
               if (player.CollisionRectangle.Intersects(
                   gemstones[x].CollisionRectangle))
               {
                   gemstones.RemoveAt(x);
                   player.Score += 10;
               }
           }
       }
   }

4. In the Game1 class, add a declaration for a SpriteFont instance that we can use to draw the player's score and a vector pointing to the location on the screen where the score will be displayed:

   SpriteFont pericles8...