Bra för fan

class Sensor{

    public:

        int trigPin = 9;
        int echoPin = 8;

        float getDistance(){
            digitalWrite(trigPin, LOW);
            delayMicroseconds(2);
            digitalWrite(trigPin, HIGH);
            delayMicroseconds(10);
            digitalWrite(trigPin, LOW);

            double duration = pulseIn(echoPin, HIGH);

            double distance = 0.0343*duration/2;

            return(distance);
        }

};

class Speaker{

    public:
        int soundPin = 12;

};

class Button{

    public:
        int buttonPin = 2;
        bool shouldPlay = 0;
        long long lastToggle;

        bool isPressed(){
            if (bool buttonState = digitalRead(buttonPin)){
                if (millis() - lastToggle > 250){
                    lastToggle = millis();
                    return(true);
                }
            }
            return(false);
        }

};

Sensor sensor;
Speaker speaker;
Button button;

long long start;
bool active;

void setup(){
    Serial.begin(115200);
    pinMode(sensor.echoPin, INPUT);
    pinMode(sensor.trigPin, OUTPUT);
    pinMode(speaker.soundPin, OUTPUT);
    pinMode(button.buttonPin, INPUT);
    pinMode(13, OUTPUT);
    button.lastToggle = millis();
    active = false;
}

void loop(){

    if (sensor.getDistance() < 25 && active == false){
        tone(speaker.soundPin, 400);
        start = millis();
        active = true;
    }

    if (millis() - start < 5000){
        if (button.isPressed()){
            noTone(speaker.soundPin);
            active = false;
            delay(3000);
        }
    }

    if (millis() - start > 5000){
        noTone(speaker.soundPin);
        digitalWrite(13, HIGH);
    }
}