Sensor class

class SensorInput {
public:
    byte inputPin;
    int sensorState;             // the current reading from the input pin
    int lastSensorState;   // the previous reading from the input pin

    // the following variables are unsigned longs because the time, measured in
    // milliseconds, will quickly become a bigger number than can be stored in an int.
    unsigned long lastDebounceTimeSensor;  // the last time the output pin was toggled
    unsigned long debounceDelaySensor;    // the debounce time; increase if the output flickers

    SensorInput(byte inputPin) {
        lastSensorState = HIGH;
        lastDebounceTimeSensor = 0;
        debounceDelaySensor = 50;

        this->inputPin = inputPin;
        pinMode(inputPin, INPUT_PULLUP);  // sets the pin as input
    };

    bool checkState() {

        int reading = digitalRead(inputPin);
        DBGV("Sensor read: ", reading);

        // check to see if you just pressed the button
        // (i.e. the input went from LOW to HIGH), and you've waited long enough
        // since the last press to ignore any noise:

        // If the switch changed, due to noise or pressing:
        if (reading != lastSensorState) {
            // reset the debouncing timer
            lastDebounceTimeSensor = millis();
        }

        if ((millis() - lastDebounceTimeSensor) > debounceDelaySensor) {
            // whatever the reading is at, it's been there for longer than the debounce
            // delay, so take it as the actual current state:

            // if the button state has changed:
            if (reading != sensorState) {
            sensorState = reading;

                // only toggle the LED if the new button state is HIGH
                if (sensorState == LOW) {
                    return 1;
                }
            }
        }

        // set the LED:
        //digitalWrite(ledPin, ledState);

        // save the reading. Next time through the loop, it'll be the lastButtonState:
        lastSensorState = reading;
        return 0;
    }


};