rotation animation block challenges

Coding challenges for the rotation animation.

Before we get started

Complete the following guided activity:

activity

At the end of the activity, your code should look like this:

let rotating = true;
while (rotating) {
    basic.pause(20)
    basic.showLeds(`
        # . . . .
        . # . . .
        . . # . .
        . . . # .
        . . . . #
        `)
    basic.showLeds(`
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        `)
    basic.showLeds(`
        . . . . #
        . . . # .
        . . # . .
        . # . . .
        # . . . .
        `)
    basic.showLeds(`
        . . . . .
        . . . . .
        # # # # #
        . . . . .
        . . . . .
        `)
}

Challenge 1

Now let's add to this by creating a condition for on button pressed A before the while loop.


let rotating = true;
while (rotating) {
    basic.pause(20)
    basic.showLeds(`
        # . . . .
        . # . . .
        . . # . .
        . . . # .
        . . . . #
        `)
    basic.showLeds(`
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        `)
    basic.showLeds(`
        . . . . #
        . . . # .
        . . # . .
        . # . . .
        # . . . .
        `)
    basic.showLeds(`
        . . . . .
        . . . . .
        # # # # #
        . . . . .
        . . . . .
        `)
}
input.onButtonPressed(Button.A, () => {
    
})

Challenge 2

@video td/videos/rotation-animation-1-and-2

Now that we have the on button pressed condition, let's make the animation stop rotating by setting the rotating global variable to false when button A is pressed.

let rotating = true;
while (rotating) {
    basic.pause(20)
    basic.showLeds(`
        # . . . .
        . # . . .
        . . # . .
        . . . # .
        . . . . #
        `)
    basic.showLeds(`
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        . . # . .
        `)
    basic.showLeds(`
        . . . . #
        . . . # .
        . . # . .
        . # . . .
        # . . . .
        `)
    basic.showLeds(`
        . . . . .
        . . . . .
        # # # # #
        . . . . .
        . . . . .
        `)
}
input.onButtonPressed(Button.A, () => {
    let rotating = false; 
})

Run the code to see the awesome rotation.

Challenge 3

Let's also make the image rotate the opposite way when button A is pressed! We can do this with another while loop that is only executed while not rotating.

2.6 KiB Raw Blame History