67 lines
2.0 KiB
Markdown
67 lines
2.0 KiB
Markdown
# Coin Flipper
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Let's create a coin flipping program to simulate a real coin toss. We'll use icon images to represent a ``heads`` or ``tails`` result.
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## Step 1
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Get an ``||input:on button A pressed||`` block from the ``||input:Input||`` drawer in the toolbox. The coin flip code we add will run 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
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Grab an ``||logic:if else||`` block and set it inside ``||input:on button A pressed||``. Put a ``||Math:pick random true or false||`` into the ``||logic:if||`` as its condition.
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The ``||Math:pick random true or false||`` returns a random ``true`` or ``false`` value which we use to determine a ``heads`` or ``tails`` result for a coin toss.
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```blocks
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input.onButtonPressed(Button.A, () => {
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if (Math.randomBoolean()) {
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} else {
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}
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})
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```
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## Step 3
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Now, put a ``||basic:show icon||`` block inside both the ``||logic:if||`` and the ``||logic:else||``. Pick images to mean ``heads`` and ``tails``.
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```blocks
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input.onButtonPressed(Button.A, () => {
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if (Math.randomBoolean()) {
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basic.showIcon(IconNames.Skull)
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} else {
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basic.showIcon(IconNames.Square)
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}
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})
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```
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## Step 4
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Click ``|Download|`` to transfer your code into your @boardname@. Press button **A** to "toss a coin" and see the result.
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## Step 5
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You can animate the coin toss to add the feeling of suspense. Place different ``||basic:show icon||`` blocks before the ``||logic:if||`` to show that the coin is flipping before the result appears.
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```blocks
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input.onButtonPressed(Button.A, () => {
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basic.showIcon(IconNames.Diamond)
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basic.showIcon(IconNames.SmallDiamond)
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basic.showIcon(IconNames.Diamond)
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basic.showIcon(IconNames.SmallDiamond)
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if (Math.randomBoolean()) {
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basic.showIcon(IconNames.Skull)
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} else {
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basic.showIcon(IconNames.Square)
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}
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})
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```
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## Step 6
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Click ``|Download|`` to transfer your code to your @boardname@ again and press button **A** for a flip. Test your luck and guess ``heads`` or ``tails`` before the toss is over!
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