174 lines
3.2 KiB
Markdown
174 lines
3.2 KiB
Markdown
# spinner challenges
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Create an arrow that randomly points to a player.
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## Before we get started
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Complete the following [guided tutorial](/lessons/spinner/activity), your code should look like this:
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```blocks
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input.onGesture(Gesture.Shake, () => {
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let randomArrow = Math.random(4)
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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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})
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```
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### Challenge 1
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Modify the random number generator so that it can include new arrows we will create in the next challenge.
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```blocks
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input.onGesture(Gesture.Shake, () => {
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let randomArrow = Math.random(8)
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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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})
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```
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* Do **not** run the code yet because it will not work until you have conditions for every random number.
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### Challenge 2
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Let's add more arrows that point diagonally.
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```blocks
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input.onGesture(Gesture.Shake, () => {
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let randomArrow = Math.random(8)
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if (randomArrow == 7) {
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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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if (randomArrow == 6) {
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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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if (randomArrow == 5) {
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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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if (randomArrow == 4) {
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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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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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if (randomArrow == 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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`)
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}
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})
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```
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* Run your code to see if it works as expected
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### Challenge 3
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Add some other arrows if there are more than 8 players.
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