Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Build a Simple iPhone App with Swift 2.0 Getting Started with iOS Development Swift Recap Part 2

Overriding function

Not sure why I am not doing it right ... some flaws

Challenge Task 1 of 1

In the editor you've been provided with two classes - Point to represent a coordinate point and Machine. The machine has a move method that doesn't do anything because most machines are motionless.

Your task is to subclass Machine and create a new class named Robot. In the Robot class, override the move method and provide the following implementation. If you enter the string "Up" the y coordinate of the Robot's location increases by 1. "Down" decreases it by 1. If you enter "Left", the x coordinate of the location property decreases by 1 while "Right" increases it by 1.

Note: If you use a switch statement you can use the break statement in the default clause to exit the current iteration.

/Users/mattconway/Desktop/Screen Shot 2016-01-29 at 4.37.54 PM.png

class Point {
    var x: Int
    var y: Int

    init(x: Int, y: Int){
        self.x = x
        self.y = y

class Machine {
    var location: Point

    init() {
        self.location = Point(x: 0, y: 0)

    func move(direction: String) {
        print("Do nothing! I'm a machine!")

// Enter your code below
class Robot: Machine {
  override func move(direction: String) {
    self.location = break
    var up = (y + 1)
    var down = (y - 1)
    var left = (x - 1)
    var right = (x + 1)
    for move in direction {