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Start your free trialtrentabaldwin
20,473 PointsWhy does the y value not increase?
Why can I not change the value of the Robot's coordinates?
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 init() {
super.init()
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
}
}
}
}
1 Answer
Steve Hunter
57,712 PointsHi there,
You have your move
method inside your init
method. You need to put it outside of init
and then make sure you override
it too.
Something like:
class Robot: Machine {
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
}
}
}
I removed the call to super init
too as that doesn't need to be there. I hope that makes sense.
Steve.
trentabaldwin
20,473 Pointstrentabaldwin
20,473 PointsThank you!
Steve Hunter
57,712 PointsSteve Hunter
57,712 Points