Peli de Halleux 2b504d863d

* a few updates

* more updates

* reorder radio blocks

* more shuffling of new radio apis

* fixing hot or ocold

* more doc fixes

* more updates

* fixing docs issues

* more doc fixes

* restore docs errors

* missing packate

* renamed argument of callback

* mssing radio

* more odcs fixes

* lock turtle

* ignore docs for now

2018-10-15 15:32:09 -07:00

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Mood Radio

@description A mini mood messaging app using radio

This project uses the radio to share your mood with other @boardname@s. When you press A, your friends will see a smiley face. When you press B, they will see a frowny face.

Sending a smiley

The @boardname@ can't understand mood but it is pretty good with numbers. In fact, it can send numbers between @boardname@s using the radio antenna, just like a phone can send text messages.

Let's add blocks that send a number when button A is pressed. We assume that 0 is the "mood code" to send for smiley.

input.onButtonPressed(Button.A, () => {
    radio.sendNumber(0)
    basic.showIcon(IconNames.Happy)
})

Receiving a smiley

We add a ||radio:on received number|| block that will run code whenever a new "mood" message comes in. The receivedNumber variable contains the numeric value that was sent. Since we've decided that 0 is smiley, we add a conditional ||logic:if then|| statement to show this icon.

radio.onReceivedNumber(function (receivedNumber) {
    if (receivedNumber == 0) {
        basic.showIcon(IconNames.Happy)
    }
})

Sending a frowny

Adding another mood to our messaging app done in a similar way. We decide that the "mood code" of 1 means frowny. We can add a B button event that sends that code.

input.onButtonPressed(Button.B, () => {
    radio.sendNumber(1)
    basic.showIcon(IconNames.Sad)
})

If the ||radio:on received number|| block, we add another conditional ||logic:if then|| statement to handle the frowny "mood code".

radio.onReceivedNumber(function (receivedNumber) {
    if (receivedNumber == 0) {
        basic.showIcon(IconNames.Happy)
    }
    if (receivedNumber == 1) {
        basic.showIcon(IconNames.Sad)
    }
})

That's it. Download your code to multiple @boardname@s and try it out!

Challenges

Try adding a new code and use the ||input:on shake|| event to send it.

Full sources

input.onButtonPressed(Button.A, () => {
    radio.sendNumber(0)
    basic.showIcon(IconNames.Happy)
})
input.onButtonPressed(Button.B, () => {
    radio.sendNumber(1)
    basic.showIcon(IconNames.Sad)
})
radio.onReceivedNumber(function (receivedNumber) {
    if (receivedNumber == 0) {
        basic.showIcon(IconNames.Happy)
    }
    if (receivedNumber == 1) {
        basic.showIcon(IconNames.Sad)
    }
})

radio

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