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# Need Help!!

Directions::::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.

//Not sure what to do, need some help

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 class Robot: Machine { override func move(var direction: String) { if direction = "Up" { location.y } } }

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! Im a machine!")
}
}

```

Hey Drew,

You should be able to complete the challenge using a switch statement. When someone types in the word "Up" into the direction parameter, the y point should move +1. When someone types the word "Down" into the direction parameter then y should move -1.

```class Robot: Machine {
override func move(direction: String) {
switch direction {
case "Up":
self.location = (Point(x: 0, y: 1))
case "Down":
self.location = (Point(x: 0, y: -1))
case "Left":
self.location = (Point(x: -1, y: 0))
case "Right":
self.location = (Point(x: 1, y: 0))
default: break
}
}
}
```