Coin Flipper
Introduction
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.
Step 1
Get an ||input:on button A pressed||
block from the ||input:Input||
drawer in the toolbox. We’ll put our coin flipping code in here.
input.onButtonPressed(Button.A, () => {
})
Step 2
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.
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.
input.onButtonPressed(Button.A, () => {
if (Math.randomBoolean()) {
} else {
}
})
Step 3
Now, put a ||basic:show icon||
block inside both the ||logic:if||
and the ||logic:else||
. Pick images to mean heads
and tails
.
input.onButtonPressed(Button.A, () => {
if (Math.randomBoolean()) {
basic.showIcon(IconNames.Skull)
} else {
basic.showIcon(IconNames.Square)
}
})
Step 4
Press button A in the simulator to try the coin toss code.
Step 5
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.
input.onButtonPressed(Button.A, () => {
basic.showIcon(IconNames.Diamond)
basic.showIcon(IconNames.SmallDiamond)
basic.showIcon(IconNames.Diamond)
basic.showIcon(IconNames.SmallDiamond)
if (Math.randomBoolean()) {
basic.showIcon(IconNames.Skull)
} else {
basic.showIcon(IconNames.Square)
}
})
Step 6
If you have a micro:bit, connect it to USB and click |Download|
to transfer your code.
Step 7
Press button A for a flip. Test your luck and guess heads
or tails
before the toss is over!