XNA 4.0 Game Development by Example Beginner's Guide

Time for action – creating the Enemy class

1. Add a new class called Enemy to the Asteroid Belt Assault project.
2. Add the standard using directives to the class:

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

3. Add declarations to the Enemy class:

   public Sprite EnemySprite;
   public Vector2 gunOffset = new Vector2(25, 25);
   private Queue<Vector2> waypoints = new Queue<Vector2>();
   private Vector2 currentWaypoint = Vector2.Zero;
   private float speed = 120f;
   public bool Destroyed = false;
   private int enemyRadius = 15;
   private Vector2 previousLocation = Vector2.Zero; 

4. Add a constructor to the Enemy class:

   public Enemy( Texture2D texture, Vector2 location, Rectangle initialFrame, int frameCount) { EnemySprite = new Sprite( location, texture, ...