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

Dave Kim
Dave Kim
1,104 Points

Hello, I really need some help I am trying to this challenges, but I don't know what I'm am doing wrong.

I don't know what to do next can anyone please debug my code or steer me in the right direction. Thank You very much

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! I`m a machine!")
    }
}

// Enter your code below

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


        }
    }
}

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

You removed the underscore on direction in both of you methods, add that and you should be good

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) {
        switch direction {
           case "Up": location.y += 1
        case "Down": location.y -= 1
        case "Left": location.x -= 1
        case "Right": location.x += 1
        default: break


        }
    }
}