Time for action – adding the UIHelper class

In order to add the static helper class, perform the following steps:

1. 1. Add a new class file called UIHelper.cs to the Tank Battles project.

2. 2. Add the following usi ng directives at the beginning of the UIHelper class file:

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

3. 3. Modify the declaration of the class to add the modifier static before it. The new class declaration should read:

   static class UIHelper

4. 4. Add fields to the UIHelper class as follows:

   #region Fields
   public static Texture2D ButtonTexture;
   public static SpriteFont ButtonFont;
   #endregion

5. 5. Add methods to the UIHelper class as follows:

   #region Helper Methods
   public static UIButton CreateButton(
       string id, 
       string text, 
       int x, 
       int y)
   {
       UIButton b = new UIButton(
           id,
           new Vector2(x,y),
           new Vector2(25 - ButtonFont.MeasureString(text).X / 2, 10),
           ButtonFont,
           text,
      ...