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Start your free trialLana Wong
3,968 PointsHow do you do this? I forgot how to deal with coordinates and switch statements, etc.
Hi, Can someone help me solve this. It has been a while since I did this stuff, and I need to be caught up again. Thank you so much. :)
Instructions: In the editor you've been provided with two classes - Point to represent a coordinate point and Machine. The machine has a move method that doesn't do anything because most machines are motionless.
Your task is to subclass Machine and create a new class named Robot. In the Robot class, override the move method and provide the following implementation. If you enter the string "Up" the y coordinate of the Robot's location increases by 1. "Down" decreases it by 1. If you enter "Left", the x coordinate of the location property decreases by 1 while "Right" increases it by 1.
Note: If you use a switch statement you can use the break statement in the default clause to exit the current iteration.
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! Im a machine!")
}
}
// Enter your code below
let Robot: Machine {
override func move(direction: String){
}
}
3 Answers
John Roque Jorillo
13,117 Pointsclass 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 } } }
Your task is to subclass Machine and create a new class named Robot
- You should create class rather than a constant
Mackenzy Douyon
iOS Development Techdegree Student 2,913 Pointsclass 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 } } }
Mitchell Henderson
iOS Development Techdegree Student 4,058 Pointsclass 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
}
}
}