XNA 4.0 Game Development by Example Beginner's Guide

Time for action – interacting with zombies

1. In the Update() method of the LevelManager class, replace the foreach loop that updates the enemies list entries with the following loop:

   for (int x = enemies.Count - 1; x >= 0; x--)
   {
       enemies[x].Update(gameTime);
       if (!enemies[x].Dead)
       {
           if (player.CollisionRectangle.Intersects(
               enemies[x].CollisionRectangle))
           {
               if (player.WorldCenter.Y < enemies[x].WorldLocation.Y)
               {
                   player.Jump();
                   player.Score += 5;
                   enemies[x].PlayAnimation("die");
                   enemies[x].Dead = true; ;
               }
               else
               {
                   player.Kill();
               }
           }
       }
       else
       {
           if (!enemies[x].Enabled)
           {
               enemies.RemoveAt(x);
           }
       }
   }

2. In the Player class, add a declaration to hold the lives the player has remaining:

   private int livesRemaining  = 3;

3. Still in the Player class, add a property to ...