76 lines
1.8 KiB
Markdown
76 lines
1.8 KiB
Markdown
|
# rotation animation challenges
|
||
|
|
|
||
|
|
Coding challenges for the rotation animation tutorial. #docs
|
||
|
|
|
||
|
|
## Before we get started
|
||
|
|
|
||
|
|
Complete the following guided tutorial:
|
||
|
|
|
||
|
|
* [tutorial](/microbit/lessons/rotation-animation/tutorial)
|
||
|
|
|
||
|
|
At the end of the tutorial, click `keep editing`. Your code should look like this:
|
||
|
|
|
||
|
|
```
|
||
|
|
rotating = true
|
||
|
|
while (rotating) {
|
||
|
|
basic.showAnimation(`
|
||
|
|
# . . . . . . # . . . . . . # . . . . .
|
||
|
|
. # . . . . . # . . . . . # . . . . . .
|
||
|
|
. . # . . . . # . . . . # . . # # # # #
|
||
|
|
. . . # . . . # . . . # . . . . . . . .
|
||
|
|
. . . . # . . # . . # . . . . . . . . .
|
||
|
|
`, 400)
|
||
|
|
basic.pause(25)
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
### Challenge 1
|
||
|
|
|
||
|
|
Now let's add to this by creating a condition for on button pressed `A` before the while loop.
|
||
|
|
|
||
|
|
```
|
||
|
|
rotating = true
|
||
|
|
input.onButtonPressed("A", () => {
|
||
|
|
}) // ***
|
||
|
|
while (rotating) {
|
||
|
|
basic.showAnimation(`
|
||
|
|
# . . . . . . # . . . . . . # . . . . .
|
||
|
|
. # . . . . . # . . . . . # . . . . . .
|
||
|
|
. . # . . . . # . . . . # . . # # # # #
|
||
|
|
. . . # . . . # . . . # . . . . . . . .
|
||
|
|
. . . . # . . # . . # . . . . . . . . .
|
||
|
|
`, 400)
|
||
|
|
basic.pause(25)
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
### Challenge 2
|
||
|
|
|
||
|
|
### @video td/videos/rotation-animation-1-and-2
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
```
|
||
|
|
rotating = true
|
||
|
|
input.onButtonPressed("A", () => {
|
||
|
|
rotating = false // ***
|
||
|
|
}) // ***
|
||
|
|
while (rotating) {
|
||
|
|
basic.showAnimation(`
|
||
|
|
# . . . . . . # . . . . . . # . . . . .
|
||
|
|
. # . . . . . # . . . . . # . . . . . .
|
||
|
|
. . # . . . . # . . . . # . . # # # # #
|
||
|
|
. . . # . . . # . . . # . . . . . . . .
|
||
|
|
. . . . # . . # . . # . . . . . . . . .
|
||
|
|
`, 400)
|
||
|
|
basic.pause(25)
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
* Run the code to see the awesome rotation.
|
||
|
|
|
||
|
|
### Challenge 3
|
||
|
|
|
||
|
|
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 while `not rotating`.
|
||
|
|
|