const int ledPins[] = {2, 3, 4, 5};
const int numLeds = 4;

const int potPin = A0;
int potValue = 0;
int delayTime = 0;
int ledIndex = 0;

void setup() {
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
  Serial.begin(9600);
}

void loop() {
  potValue = analogRead(potPin);

  delayTime = map(abs(potValue - 512), 0, 512, 1000, 0);

  Serial.print("Pot Value: ");
  Serial.print(potValue);
  Serial.print(" | Delay: ");
  Serial.println(delayTime);

  if (potValue >= 492 && potValue <= 532) {
    return;
  }

  resetLeds();

  if (potValue < 492) {
    ledIndex = (ledIndex - 1 + numLeds) % numLeds;
  } else {
    ledIndex = (ledIndex + 1) % numLeds;
  }

  digitalWrite(ledPins[ledIndex], HIGH);

  delay(delayTime);
}

void resetLeds() {
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], LOW);
  }
}