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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
Posted by Vansh Agarwal
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
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
}

} }