pxt-calliope/olddocs/js/lessons/logo-pointer/challenges.md

magic logo challenges

These challenges will help you show arrows that point which way the logo is pointing! #docs

Challenge 0

@video vimeo/134638098

This guided tutorial will help you display an arrow pointing the direction the logo is oriented!

Let's display and upward pointing arrow when the logo is up!

input.onLogoUp(() => {
    images.createImage(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`).showImage(0)
})

Challenge 1

How about when the logo is down? We should display the arrow pointing downward!

Let's start by adding a condition for if the logo is down.

input.onLogoUp(() => {
    images.createImage(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`).showImage(0)
})
input.onLogoDown(() => {
}) // ***

Challenge 2

@video vimeo/134639918

Now we need to display the arrow!

input.onLogoUp(() => {
    images.createImage(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`).showImage(0)
})
input.onLogoDown(() => {
    images.createImage(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`).showImage(0) // ***
})

Challenge 3

Let's show a spinning arrow when the micro:bit is shaken. We can do this by adding an on shake condition and showing an animation of the arrow spinning!