pxt-calliope/docs/projects/smiley-buttons.md
Galen Nickel f4aa25e2bd Modify tutorials for single download step ()
* Modify tutorials for single dl step

* Some more fixes

* coin flip typer
2018-08-17 10:58:45 -04:00

75 lines
1.6 KiB
Markdown

# Smiley Buttons
## Step 1
Place a ``||input:on button pressed||`` block to run code when button **A** is pressed.
```blocks
input.onButtonPressed(Button.A, () => {
});
```
## Step 2
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.
```blocks
input.onButtonPressed(Button.A, () => {
basic.showLeds(`
# # . # #
# # . # #
. . . . .
# . . . #
. # # # .`
);
});
```
## Step 3
Add ``||input:on button pressed||`` and ``||basic:show leds||`` blocks to display a frowney when button **B** is pressed.
```blocks
input.onButtonPressed(Button.B, () => {
basic.showLeds(`
# # . # #
# # . # #
. . . . .
. # # # .
# . . . #`
);
});
```
## Step 4
Add a secret mode that happens when **A** and **B** are pressed together. In that case, add multiple ``||basic:show leds||`` blocks to create an animation...
```blocks
input.onButtonPressed(Button.AB, () => {
basic.showLeds(`
. . . . .
# . # . .
. . . . .
# . . . #
. # # # .
`)
basic.showLeds(`
. . . . .
. . # . #
. . . . .
# . . . #
. # # # .
`)
})
```
## Step 5
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.
## Step 6
Nice! Now go and show it off to your friends!