Open the makecode.com website and create a new Microbit project.

On start, we need a sprite variable for our Paddle. The Paddle should stay at the bottom of the screen and move left & right.

let Paddle: game.LedSprite = null
Paddle = game.createSprite(2, 4)

Show: Microbit: How to create a variable

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In the Variables toolbox, create a new variable by clicking the 'Make a Variable' button.

Once you click this button a box will appear asking what you want to call your variable. Give it a name that reminds you what you will be using it for. For example, if you wanted to keep track of your score in a game, you would create a variable called 'score'.

Make the Paddle sprite move left when you press A and move right when you press B.

let Paddle: game.LedSprite = null
input.onButtonPressed(Button.B, function () {
    Paddle.change(LedSpriteProperty.X, 1)
})

Can you figure out how to make it move left yourself?

see the code

let Paddle: game.LedSprite = null
input.onButtonPressed(Button.A, function () {
    Paddle.change(LedSpriteProperty.X, -1)
})

Now we need to create a sprite variable for our Ball that our Paddle will try to deflect. Make the Ball start up the top of the screen.

see the code

let Ball = game.createSprite(randint(0, 4), 0)

Show: Microbit: How to create a variable

---

In the Variables toolbox, create a new variable by clicking the 'Make a Variable' button.

Once you click this button a box will appear asking what you want to call your variable. Give it a name that reminds you what you will be using it for. For example, if you wanted to keep track of your score in a game, you would create a variable called 'score'.

We need to create a variable for the y-coordinate of the Ball on the screen called YDirection.

On start, we should set YDirection to 1 (more on this in the next section!).

let Paddle: game.LedSprite = null
Paddle = game.createSprite(2, 4)
let YDirection = 1