Time for action – waypoint management

1. Add the AddWaypoint() method to the Enemy class:

   Public Sub AddWaypoint(waypoint As Vector2)
       waypoints.Enqueue(waypoint)
   End Sub

2. Add the WaypointReached() method to the Enemy class:

   Public Function WaypointReached() as Boolean
       If Vector2.Distance(EnemySprite.Location, currentWaypoint) < 
           CSng(EnemySprite.Source.Width)/2 Then
           Return True
       Else
           Return False
       End If
   End Function

3. Add the IsActive() method to the Enemy class:

   Public Function IsActive() As Boolean
       If Destroyed Then
           Return False
       End If
   
       if waypoints.Count > 0 Then
           Return True
       End If
   
       If WaypointReached()
           Return False
       End If
   
       Return True
   End Function

What just happened?

When a new waypoint is added to the enemy's route, it is enqueued to the waypoints queue. When WaypointReached() is called, the function checks to see if the distance between the sprite's current location and the current waypoint is less...