A game where you have to keep a Circuit Playground level for as long as possible. It keeps track of your "score" (2 points per second) and displays it at the end of the game.

circuitplayground-Circuit-Jouster.js

// variables
let soundsOn = true // false if you don't want any sounds
let modifier = 100 // lower == harder

// the game flow
light.pixels.clear()
startUp()
let rounds = playGame(modifier)
serial.writeLine("rounds: " + rounds.toString())
endGame(soundsOn)
showScore(rounds, soundsOn)

function startUp() {
    // initial light ring
    for (let i = 0; i <= 10 - 1; i++) {
        light.pixels.setPixelColor(i, Colors.Green)
        loops.pause(200)
        light.pixels.show()
    }
    loops.pause(200)
    light.pixels.clear()
    loops.pause(100)
    light.pixels.setAll(Colors.Green)
    light.pixels.show()
    loops.pause(100)
    light.pixels.clear()
    loops.pause(100)
    light.pixels.setAll(Colors.Green)
    light.pixels.show()
}

function playGame(modifier: number) {
    let tilt = 0
    // @TODO: read the switch value, for easy/hard mode
    let rounds = 0
    while (true) {
        tilt += Math.abs(input.rotation(Rotation.Pitch) + input.rotation(Rotation.Roll))
        for (let i = 1; i <= 10; i++) {
            if (tilt > modifier * i) {
                light.pixels.setPixelColor(i - 1, Colors.Red)
            } else if (tilt > (modifier * i) - (modifier / 2)) {
                light.pixels.setPixelColor(i - 1, Colors.Yellow)
            }
        }

        serial.writeLine("tilt: " + tilt.toString())
        light.pixels.show()
        if (tilt > modifier * 10) {
            return rounds
        }
        rounds++
        loops.pause(500)
    }
}

// the ending animation and sad trombone sound
function endGame(sounds: boolean) {
    for (let i = 9; i >= 0; i--) {
        light.pixels.setPixelColor(i, Colors.Black)
        loops.pause(75)
    }
    if (sounds) {
        music.playTone(329.63, 600)
        music.playTone(293.66, 400)
        music.playTone(261.63, 800)
        loops.pause(500)
    }
}

// each round is 0.5 seconds
// max score is 1 minute (120 rounds)
// based on playtesting, this might need to change?
function showScore(rounds: number, sounds: boolean) {
    let maxRounds = 120 // make higher if you routinely get a kill screen
    let score = rounds / maxRounds * 10
    let green = Math.floor(score)
    let yellow = (score - green) >= 0.5 // if you got one final yellow

    for (let i = 0; i < green; i++) {
        if (sounds) music.playTone(261 + (i * 20), 100)
        light.pixels.setPixelColor(i, Colors.Yellow)
        loops.pause(500)
        if (sounds) music.playTone(271 + (i * 20), 100)
        light.pixels.setPixelColor(i, Colors.Green)
        loops.pause(500)
    }
    if (yellow) {
        // because of 0-indexing, green is actually the pixel after the highest green
        if (sounds) music.playTone(261 + (green * 20), 100)
        light.pixels.setPixelColor(green, Colors.Yellow)
    }
}