70 lines
1.3 KiB
Markdown
70 lines
1.3 KiB
Markdown
# rotation animation block activity
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Rotate images with a while loop.
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## ~avatar avatar
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Welcome! This tutorial will teach how to rotate images with a **while loop**. Let's get started!
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## ~
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Let's start by creating a global variable called `rotating` and initialize it to true. This well indicate when the animation should be displaying.
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```blocks
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let rotating = true;
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```
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Now we need a while loop that will be executed only if the variable rotating is true.
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```blocks
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let rotating = true;
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while (rotating) {
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basic.pause(20)
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}
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```
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Let's create and show an animation of a diagonal line that rotates clockwise. We need a pause so that the battery does not burn out.
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```blocks
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let rotating = true;
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while (rotating) {
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basic.pause(20)
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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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`)
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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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`)
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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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`)
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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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`)
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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](/lessons/rotation-animation/challenges)!
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## ~
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