111 lines
2.2 KiB
Markdown
111 lines
2.2 KiB
Markdown
# spinner activity
|
|
|
|
Create an arrow that randomly points to a player.
|
|
|
|
### ~avatar avatar
|
|
|
|
### @video td/videos/spinner-0
|
|
|
|
### ~
|
|
|
|
Welcome! This guided tutorial will teach how to program a script that randomly points to a player. Let's get started!
|
|
|
|
Let's begin by adding an `on shake` condition to know when the micro:bit is shaken.
|
|
|
|
```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.
|
|
|
|
```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.
|
|
|
|
```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`.
|
|
|
|
|
|
```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(`
|
|
. . # . .
|
|
. # # . .
|
|
# # # # #
|
|
. # # . .
|
|
. . # . .
|
|
`)
|
|
|
|
}
|
|
})
|
|
```
|
|
|
|
|
|
### ~avatar avatar
|
|
|
|
Excellent, you're ready to continue with the [challenges](/microbit/lessons/spinner/challenges)!
|
|
|
|
### ~
|
|
|