pxt-calliope/olddocs/js/lessons/on-fall/challenges.md

landslide challenges

The on fall function.

Challenge 0

Welcome! This guided tutorial will show you how to detect when the @boardname@ is falling. Your goal is to write a program that detects when the @boardname@ falls!

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

Challenge 1

Add a pause within input->on fall. This will allow us to display another image in the next challenge.

input.onFall(() => {
    images.createImage(`
. . # . .
. . # . .
. . # . .
. . . . .
. . # . .
`).showImage(0)
    basic.pause(2000) // ***
})

Challenge 2

Create and display an X after the pause from Challenge 1

input.onFall(() => {
    images.createImage(`
. . # . .
. . # . .
. . # . .
. . . . .
. . # . .
`).showImage(0)
    basic.pause(2000)
    images.createImage(`
# . . . #
. # . # .
. . # . .
. # . # .
# . . . #
`).showImage(0) // ***
})

Challenge 3

Create a loop so that the @boardname@ alternates between the exclamation point and "X" images when the @boardname@ falls. You will need a forever loop and a pause at the end of the loop to do this.

See Also

on shake