int buttonPin = 7;
int rgbPins11 = 11;
int rgbPins12 = 12;
int rgbPins13 = 13;

int pressCount = 0;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(rgbPins11, OUTPUT);
  pinMode(rgbPins12, OUTPUT);
  pinMode(rgbPins13, OUTPUT);
}

void loop() {
  if (digitalRead(buttonPin) == LOW) {
    delay(250);
    
    // Vypnúť všetky LED najprv
    digitalWrite(rgbPins11, LOW);
    digitalWrite(rgbPins12, LOW);
    digitalWrite(rgbPins13, LOW);
    
    // Zapnúť podľa pressCount
    if(pressCount == 0){
      digitalWrite(rgbPins13, HIGH);
    }
    else if(pressCount == 1){
      digitalWrite(rgbPins12, HIGH);
    }
    else if(pressCount == 2){
      digitalWrite(rgbPins11, HIGH);
    }
    
    pressCount++;
    if(pressCount > 2){
      pressCount = 0;
    }
  }
}