pxt-calliope/docs/reference/js/lessons/love-meter/challenges.md

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2016-03-26 00:47:20 +01:00
# love meter challenges
create a love meter with the BBC micro:bit #docs
## Before we get started
Complete the following guided tutorial:
* [tutorial](/microbit/lessons/love-meter/tutorial)
At the end of the tutorial, click `keep editing`. Your code should look like this:
```
input.onPinPressed("P0", () => {
let x = Math.random(11)
basic.showNumber(x, 150)
})
```
### Challenge 1
Add a pause of 3000 milliseconds (3 seconds) after showing the number so that the number won't immediately disappear in the next challenge.
```
input.onPinPressed("P0", () => {
let x1 = Math.random(11)
basic.showNumber(x1, 150)
basic.pause(3000) // ***
})
```
### Challenge 2
If the rating **x** is between ``0`` and ``3`` (strictly less than ``4``), display the text "HORRIBLE!".
```
input.onPinPressed("P0", () => {
let x2 = Math.random(11)
basic.showNumber(x2, 150)
basic.pause(3000)
if (x2 < 4) {
basic.showString("HORRIBLE!", 150) // ***
}
})
```
### Challenge 3
### @video td/videos/love-meter-3
If the rating is between 4 and 7, display the text "MEDIOCRE!" **else** display the text "MATCHED!"
```
input.onPinPressed("P0", () => {
let x3 = Math.random(11)
basic.showNumber(x3, 150)
basic.pause(3000)
if (x3 < 4) {
basic.showString("HORRIBLE!", 150) // ***
} else if (x3 < 8) {
basic.showString("MEDIOCRE!", 150) // ***
}
else {
basic.showString("MATCHED!", 150) // ***
}
})
```
### Challenge 4
Use `basic->plot image` or `basic->show animation` to display images and animations instead of text for each case.