Time for action – catching the cube

1. 1. Add the following declaration to the Fields region of the Cube class:

   private const float collisionRadius = 0.25f;

2. 2. Add a Properties region of the Cube class:

   #region Properties
   public BoundingSphere Bounds
   {
       get
       {
           return new BoundingSphere(location, collisionRadius);
       }
   }
   #endregion

3. 3. In the CubeChaserGame class, add the following to the class declarations area to hold the player's current score:

   float lastScoreTime = 0f;
   int score = 0;

4. 4. In the Update() method of the CubeChaserGame class, add the following code right before the call to cube.Update():

   if (cube.Bounds.Contains(camera.Position) == 
       ContainmentType.Contains)
   {
       cube.PositionCube(camera.Position, 5f);
       float thisTime = (float)gameTime.TotalGameTime.TotalSeconds;
       float scoreTime = thisTime - lastScoreTime;
       score += 1000;
       if (scoreTime < 120)
       {
           score += (120 - (int)scoreTime) * 100;
       }
       lastScoreTime = thisTime;
   }

5. 5. In the Draw...