Time for action – placing the cube

1. 1. From the book's companion website, download the 7089_04_GRAPHICSPACK.ZIP file and extract the circuitboard.png file to a temporary location.

2. 2. Back in Visual Studio, right-click on the content project (listed as Cube ChaserContent (Content)) in Solution Explorer and select Add | Existing Item....

3. 3. Browse to the circuitboard.png file you just extracted, select it, and click Add:

   

4. 4. Add a new class file called Cube.cs to the Cube Chaser project.

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

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

6. 6. Add the following fields to your new Cube class:

   #region Fields
   private GraphicsDevice device;
   private Texture2D texture;
   
   private Vector3 location;
   
   private VertexBuffer cubeVertexBuffer;
   private List<VertexPositionTexture> vertices = new 
       List<VertexPositionTexture>();
   #endregion

7. 7. Add a constructor to the Cube class:

   #region Constructor
   public Cube(
       GraphicsDevice...