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

Can anyone help me?

So I've created the subclass, but i need help in overriding the values from the superclass. I also have no clue if I'm doing the second part correctly. Please, any help would be appreciated.

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!")
    }
}

// Enter your code below
class Robot: Machine {
   override init(x: Int , y: Int) {
   super.init(x: x , y : y )

   }
  override func move(direction: String) {

      "Up"; Point(y) + 1
       "Down"; Point(y) - 1    
       "Left"; Point(x) - 1
       "Right"; Point(x) + 1
     }
}

1 Answer

Joe Scotto
Joe Scotto
8,282 Points
class Robot: Machine {
    override func move(direction: String) {
        switch direction {
        case "Up" :
            super.location.y += 1
        case "Down" :
            super.location.y -= 1
        case "Left" :
            super.location.x -= 1
        case "Right" :
            super.location.x += 1
        default:
            print("Do nothing! I'm a machine!")
        }
    }
}

You can access properties of the super class by using the super keyword.