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

Jake White
Jake White
2,108 Points

I need help

I can't figure the correct way to code the switch statement

classes.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!")
    }
}

class Robot: Machine {
    override init() {

    }
    override func move(direction: String) {
        print("Up")
        print("Down")
        print("Left")
        print("Right")
    }


}



// Enter your code below

1 Answer

Danielle Shwed
Danielle Shwed
3,192 Points
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 func move(direction: String) {
    switch direction{
      case "Up":
        super.location.y += 1
      case "Down":
        super.location.y -= 1
      case "Right":
        super.location.x += 1
      case "Left":
        super.location.x -= 1
      default:
        break

     }
  }
}

make sure to switch on direction (a string being either up down left or right) and include a default case in case what is entered is none of the above. super references the machine class where we have location with x and y coordinates.