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Benjamin Letham
iOS Development Techdegree Student 1,574 PointsNot sure how to complete exercise.
Hi, I'm not sure why I'm receiving an error with the exercise. Here is my code:
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!")
}
}
class Robot: Machine {
override init() {
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 }
}
}
}
Any help would be greatly appreciated!
Thanks, Ben
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!")
}
}
class Robot: Machine {
override init() {
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
23,970 PointsHi Benjamin - The problem is your Robot class; here is how it should look; you are overriding the functions incorrectly
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
}
}
}