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# Swift Recap Part 2

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 { init(x: Int, y: Int) { }

```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
}
}
```

}

let robot = Robot(x: 0, y: 0) robot.location robot.move("Down") robot.location

classes.swift
```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 {
init(x: Int, y: Int) {
}

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
}
}
}
```

Hi, I'm stuck in this part of the swift recap part 2. Could you please take a look at my code, and help me out? It won't pass the test. :) Thanks!.

Your left and right cases are backwards. If you are moving to the right, you would be adding to the x value. If you are going to the left, you would decrease x. Here is the solution:

```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
}
}
}
```