Shouldn't this answer the code challenge or am i missing something altogether?

Question

So yea...

classes.swift

class Point {
    var x: Int
    var y: Int

    init(x: Int, y: Int){
        self.x = x
        self.y = y
    }
}

enum Direction {
    case Left 
    case Right
    case Up
    case Down
}


class Robot {
    var location: Point

    init() {
        self.location = Point(x: 0, y: 0)
    }

    func move(direction: Direction) {
        // Enter your code below
        switch direction {
        case Direction.Up: Point(x: 0, y: 1)
        case Direction.Down: Point(x: 0, y: -1)
        case Direction.Left: Point(x: -1, y: 0)
        case Direction.Right: Point(x: 1, y: 0)

        }
    }
}

Answer 1 · 2016-03-03T02:14:57Z

March 3, 2016 2:14am

You were close.

What you want to do is change the coordinates of the Point property (self.location) of your Robot object.

So it would look like this.

    func move(direction: Direction) {
        // Enter your code below
        switch direction {
        case .Up: 
            location.y += 1
        case .Down: 
            location.y -= 1
        case .Left: 
            location.x -= 1
        case .Right: 
            location.x += 1
        }
    }

For clean code I've not included self because location is implied as self when you are calling it on your Robot instance. Also I've not included Direction on the cases beasue it is implied by the method. :)

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Jimmy Auldridge

Jimmy Auldridge

Shouldn't this answer the code challenge or am i missing something altogether?

1 Answer

Nathan Tallack

Nathan Tallack