88 lines
1.6 KiB
Markdown
88 lines
1.6 KiB
Markdown
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# spinner activity
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create an arrow that randomly points to a player. #docs
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To create a new script, go to the [Create Code](/microbit/create-code) page and tap *New Project* under **Touch Develop**.
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Let's begin by adding an `input->on shake` condition to know when the BBC micro:bit is shaken.
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```
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input.onGesture(Gesture.Shake, () => {
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})
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```
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Now let's randomly generate a number from 0 to 3 so that we can randomly display an arrow in a given direction.
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```
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input.onGesture(Gesture.Shake, () => {
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let randomArrow = Math.random(4)
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})
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```
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Now let's handle each of the cases by displaying the appropriate arrow. (Let's display an up arrow if `random arrow` is 0.
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```
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input.onGesture(Gesture.Shake, () => {
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let randomArrow1 = Math.random(4)
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if (randomArrow1 == 0) {
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basic.showLeds(`
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. . # . .
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. # # # .
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# # # # #
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. . # . .
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. . # . .
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`, 400)
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}
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})
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```
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Now let's handle the rest of the cases for `random arrow`.
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```
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input.onGesture(Gesture.Shake, () => {
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let randomArrow2 = Math.random(4)
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if (randomArrow2 == 0) {
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basic.showLeds(`
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. . # . .
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. # # # .
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# # # # #
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. . # . .
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. . # . .
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`, 400)
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} else if (randomArrow2 == 1) {
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basic.showLeds(`
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. . # . .
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. . # . .
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# # # # #
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. # # # .
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. . # . .
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`, 400)
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}
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else if (randomArrow2 == 2) {
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basic.showLeds(`
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. . # . .
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. . # # .
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# # # # #
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. . # # .
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. . # . .
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`, 400)
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}
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else if (randomArrow2 == 3) {
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basic.showLeds(`
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. . # . .
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. # # . .
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# # # # #
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. # # . .
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. . # . .
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`, 400)
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}
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})
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```
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### ~avatar avatar
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Excellent, you're ready to continue with the [challenges](/microbit/lessons/spinner/challenges)!
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### ~
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