Time for action – interacting with zombies

1. In the Update() method of the LevelManager module, replace the For Each loop that updates the _enemies list entries with the following loop:

   For x As Integer = _enemies.Count - 1 To 0 Step - 1
       _enemies(x).Update(gameTime)
       If Not _enemies(x).Dead Then
           If _player.CollisionRectangle.Intersects(
               _enemies(x).CollisionRectangle) Then
   
               If _player.WorldCenter.Y < 
                   _enemies(x).WorldLocation.Y Then
   
                   _player.Jump()
                   _player.Score += 5
                   _enemies(x).PlayAnimation("die")
                   _enemies(x).Dead = true
               Else
                   _player.Kill()
               End If
           End If
       Else
           If Not _enemies(x).Enabled Then
               _enemies.RemoveAt(x)
           End If
       End If
   Next

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

   Public Property LivesRemaining As Integer = 3

3. Add the Kill() method to the Player...