Going Home Again

Setup

Please create a new playground titled Going Home Again.

Then copy and paste this code into the playground:

// FUNCTIONS

// Teach the computer to put the turtle in a random position
func moveToRandomPosition() {
    // Select a horizontal position at random
    let x = Double.random(in: -400...400)
    
    // Select a vertical position at random
    let y = Double.random(in: -300...300)
    
    // Move to the random position, leaving a trail behind
    turtle.penDown()
    turtle.lineWidth = 10
    turtle.diagonal(dx: Double(x), dy: y)
    turtle.lineWidth = 3
    turtle.drawSelf()
    turtle.penColor = .red
    
}

// START OF ACTUAL PROGRAM

// Draw axes
turtle.drawAxes(withScale: true, by: 50, width: 800, height: 800, color: .black)

// Move to a random position
moveToRandomPosition()

// Print the current position
turtle.currentPosition().x
turtle.currentPosition().y

Experiment

Run the program several times. What do you notice?

Consider

1. Write a single line of code that moves the turtle home again. What problem do you notice when you run the program after adding your code?
2. In your notebook, use point-form English to describe the steps you might take to always move the turtle back to the correct location.