Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Vansh Agarwal
PLUS
Vansh Agarwal
Courses Plus Student 3,965 Points

There is something wrong with my code and it is not working.

I think it has something to do with my Robot class' initializer but I can't figure out what it is. I hope you can help me out. Thanks!

robots.swift
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! Im a machine!")
  }
}

// Enter your code below

class Robot: Machine {

override init(){
super.init(location : Point(x: 0, y: 0))
}

  override func move(_ direction: String){
    switch direction{
    case "Up": location.y += 1
    case "Down": location.y -= 1
    case "Left": location.x -= 1
    case "Down": location.x += 1
    default: break 
    }
  }

}
Attila Marosi
Attila Marosi
6,144 Points

Hello Vansh,

simply use the super.init like this:

class Robot: Machine {

override init() {
    super.init()
}

override func move(_ direction: String) {
    switch  direction {
    case "Up" : self.location.y += 1
    case "Down" : self.location.y -= 1
    case "Left" : self.location.x -= 1
    case "Right" : self.location.x += 1
    default: break
}

} }