pxt-ev3/docs/coding/cruise-control-3.md
2018-01-05 21:49:04 -08:00

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# Cruise Control Activity 3
```blocks
let speed = 0
function decelerate() {
if (speed > -100) {
speed = speed - 10
}
}
function accelerate() {
if (speed < 100) {
speed = speed + 10
}
}
function update() {
brick.clearScreen()
brick.printLine("speed: " + speed, 1)
motors.largeBC.setSpeed(speed)
}
sensors.touch2.onEvent(TouchSensorEvent.Pressed, function () {
accelerate()
update()
})
sensors.touch1.onEvent(TouchSensorEvent.Pressed, function () {
decelerate()
update()
})
```