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updated lessons

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Michael Elliot Braun
2016-03-30 15:11:05 -07:00
parent f00491df52
commit 1e77491b16
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docs/lessons/spinner/activity.md
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@ -12,19 +12,95 @@ Welcome! This guided tutorial will teach how to program a script that randomly p
Let's begin by adding an `on shake` condition to know when the micro:bit is shaken.
![](/static/mb/blocks/lessons/spinner-0.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
})
```
Now let's randomly generate a number from 0 to 3 so that we can randomly display an arrow in a given direction.
![](/static/mb/blocks/lessons/spinner-1.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
})
```
Now let's handle each of the cases by displaying the appropriate arrow. (Let's display an up arrow if `random arrow` is 0.
![](/static/mb/blocks/lessons/spinner-2.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
})
```
Now let's handle the rest of the cases for `random arrow`.
![](/static/mb/blocks/lessons/spinner-3.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
if (randomArrow = 1) {
basic.showLeds(`
. . # . .
. # # . .
# # # # #
. # # . .
. . # . .
`)
}
})
```
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