Rock! Paper! Scissors!

⏱️ Step 1: Display a countdown… 3… 2… 1

input.onButtonPressed(Button.A, function () {
    basic.showString("3")
    basic.pause(1000)
    basic.showString("2")
    basic.pause(1000)
    basic.showString("1")
    basic.pause(1000)
})

• How do you make the countdown faster or slower?
• Can you play a musical tone every time a number is displayed?
• Instead of repeating the commands, can you make this work with a loop?

🎚️ Step 2: Make a new variable

Call the variable choice.

🎲 Step 3: Set the variable to a random number

Add this command to the code you already have:

choice = randint(1, 3)

✊✋✌️ Step 4: Display the icon for the chosen thing

Finally, add this:

if (choice == 1) {
    basic.showLeds(`
        . . . . .
        . # # # .
        . # # # .
        . # # # .
        . . . . .
        `)
}
if (choice == 2) {
    basic.showIcon(IconNames.Square)
}
if (choice == 3) {
    basic.showIcon(IconNames.Scissors)
}

• Can you play a different sound when each icon is shown?
• Can you make the chosen icon flash on the display?

🤔 Challenges

• Could you make a cheat mode? e.g. if you tilt the microbit to the left it always picks Scissors*
• You could make the user make their choice by pressing A for Rock, B for Scissors and A+B for Paper. Can you make the micro:bit display who won? TRICKY 🤔