77 lines
1.7 KiB
Markdown
77 lines
1.7 KiB
Markdown
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# The amazing coin flipper
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### ~avatar avatar
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Are you trying to choose whether to play soccer or go to the movies
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instead, or which toppings to have on your pizza? Build a coin
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flipping machine with the BBC micro:bit to choose for you!
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### ~
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Here are the blocks to make your coin flipper. When you press button
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`B`, the coin flipper will show either `H` for heads or `T` for tails
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on the LED screen.
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```blocks
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input.onButtonPressed(Button.B, () => {
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if (Math.randomBoolean()) {
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basic.showString("H");
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} else {
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basic.showString("T");
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}
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});
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```
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### ~hint
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The ``pick random true or false`` block randomly tells the ``if``
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block `true` or `false`. If the ``pick`` block picked `true`, the
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``if`` block shows the letter `H`. Otherwise, it shows the letter `T`.
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That's it!
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### ~
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### Keeping score
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#### ~avatar
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To keep track out of how many guesses you've won,
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add these blocks to your coin flipper:
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#### ~
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```blocks
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input.onButtonPressed(Button.A, () => {
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game.addScore(1);
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});
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input.onButtonPressed(Button.AB, () => {
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basic.showNumber(game.score());
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});
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```
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These blocks mean that if you press button `A`, you will add `1` to
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your score, and if you press `A` and `B` together, the micro:bit will
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show your score.
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When you're done, your coin flipping program should look like this:
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```blocks
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input.onButtonPressed(Button.B, () => {
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if (Math.randomBoolean()) {
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basic.showString("H");
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} else {
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basic.showString("T");
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}
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});
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input.onButtonPressed(Button.A, () => {
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game.addScore(1);
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});
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input.onButtonPressed(Button.AB, () => {
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basic.showNumber(game.score());
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});
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```
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Flip until your thumbs get tired!
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## [NEXT: ROCK PAPER SCISSORS](/getting-started/rock-paper-scissors)
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