69 lines
1.8 KiB
Markdown
69 lines
1.8 KiB
Markdown
# rotation animation challenges
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These challenges take the rotation animation to the next level by adding a while loop and changing a boolean to false. #docs
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**Challenge 0**
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### @video vimeo/134323475
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The [Rotating Pattern tutorial](https://test.microbit.co.uk/td/lessons/rotation-animation/tutorial) will help you create images that look like a rotating pattern by using a while loop.
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```
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rotating = true
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while (rotating) {
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basic.showAnimation(`
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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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**Challenge 1**
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Now let's add to this by creating a condition for on button pressed `A` before the while loop.
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```
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rotating = true
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input.onButtonPressed(Button.A, () => {
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}) // ***
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while (rotating) {
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basic.showAnimation(`
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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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**Challenge 2**
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### @video vimeo/134323896
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Now that we have the on button pressed condition, let's make the animation stop rotating by setting the rotating global variable to false when button `A` is pressed.
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```
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rotating = true
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input.onButtonPressed(Button.A, () => {
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rotating = false // ***
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}) // ***
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while (rotating) {
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basic.showAnimation(`
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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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**Challenge 3**
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Let's also make the image rotate the opposite way when button A is pressed! We can do this with another while loop that is only executed when `rotating->equals(false)`.
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