Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Axon Paradzai Mutasa
3,518 Pointshelp on calling the subclass function
its giving me an error that for the up direction y need to increase by 1.but I think my code is right. can somebody assist what I need to correct.
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 am a machine!")
}
}
class Robot: Machine {
var relocation: Point
override init() {
self.relocation = Point(x: 0, y: 0)
}
override func move(_ direction: String) {
switch direction {
case "up": relocation.y += 1
case "down": relocation.y -= 1
case "right": relocation.x += 1
case "left": relocation.x -= 1
default: break
}
}
}
1 Answer
Jeff McDivitt
23,970 PointsHi Axon -
- There is no need for the variable relocation that you created
- There is no need for the override initializer, you are overriding the method
- The Cases need to be uppercase and no need for relocation
class Robot: Machine {
override func move(_ direction: String) {
switch direction {
case "Up": location.y += 1
case "Down": location.y -= 1
case "Right": location.x += 1
case "Left": location.x -= 1
default: break
}
}
}