82 lines
1.9 KiB
Markdown
82 lines
1.9 KiB
Markdown
# Smiley Buttons
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## Introduction @unplugged
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Code the buttons on the @boardname@ to show that it's happy or sad.
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(Want to learn how the buttons works? [Watch this video](https://youtu.be/t_Qujjd_38o)).
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## Step 1 @fullscreen
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Place a ``||input:on button pressed||`` block to run code when button **A** is pressed.
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```blocks
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input.onButtonPressed(Button.A, () => {
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});
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```
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## Step 2 @fullscreen
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Place a ``||basic:show leds||`` block inside ``||input:on button pressed||`` to display a smiley on the screen. Press the **A** button in the simulator to see the smiley.
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```blocks
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input.onButtonPressed(Button.A, () => {
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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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## Step 3 @fullscreen
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Add ``||input:on button pressed||`` and ``||basic:show leds||`` blocks to display a frowny when button **B** is pressed.
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```blocks
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input.onButtonPressed(Button.B, () => {
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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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## Step 4 @fullscreen
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Add a secret mode that happens when **A** and **B** are pressed together. For this case, add multiple ``||basic:show leds||`` blocks to create an animation.
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```blocks
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input.onButtonPressed(Button.AB, () => {
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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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## Step 5
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If you have a @boardname@, connect it to USB and click ``|Download|`` to transfer your code. Press button **A** on your @boardname@. Try button **B** and then **A** and **B** together.
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## Step 6
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Nice! Now go and show it off to your friends!
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