int count_time = 500;  // Start with 500ms delay
bool lastButtonState = false;

// LED pins in order
const int ledPins[] = {27, 2, 4, 16, 17};
const int numLeds = 5;

// Variables for timing
unsigned long previousMillis = 0;
int ledCount = 0;  // How many LEDs are currently on

void setup() {
  Serial.begin(115200);
  Serial.println("Running Light Started!");
  
  pinMode(33, INPUT_PULLUP);
  
  // Initialize all LED pins
  for(int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }
}

void loop() {
  // Check button for speed change
  boolean currentButtonState = !digitalRead(33);
  if (currentButtonState == true && lastButtonState == false) {
    count_time -= 50;
    if (count_time <= 0) count_time = 500;
    Serial.print("Speed: ");
    Serial.println(count_time);
  }
  lastButtonState = currentButtonState;
  
  // Simple accumulating LED effect
  unsigned long currentMillis = millis();
  
  if (currentMillis - previousMillis >= count_time) {
    previousMillis = currentMillis;
    
    // Turn on next LED
    if (ledCount < numLeds) {
      digitalWrite(ledPins[ledCount], HIGH);
      ledCount++;
    } 
    // If all LEDs are on, reset
    else {
      // Turn off all LEDs
      for(int i = 0; i < numLeds; i++) {
        digitalWrite(ledPins[i], LOW);
      }
      ledCount = 0;
    }
  }
}