// Smart traffic light with pedestrian crossing

int carRed = 12;
int carYellow = 11;
int carGreen = 10;
int pedRed = 9;
int pedGreen = 8;
int button = 2;
int buzzer = 7;

int crossTime = 10000; // 10 seconds for pedestrian crossing
int buttonState = 0;

unsigned long changeTime;

void setup() {
  pinMode(carRed, OUTPUT);
  pinMode(carYellow, OUTPUT);
  pinMode(carGreen, OUTPUT);
  pinMode(pedRed, OUTPUT);
  pinMode(pedGreen, OUTPUT);
  pinMode(button, INPUT_PULLUP); // Use INPUT_PULLUP for button
  pinMode(buzzer, OUTPUT);

  digitalWrite(carGreen, HIGH);
  digitalWrite(pedRed, HIGH);
}

void loop() {
  buttonState = digitalRead(button);

  // Check if the button is pressed and at least 10 seconds have passed
  if (buttonState == HIGH && (millis() - changeTime) > crossTime) {
    changeLights();
  }
}

void changeLights() {
  // Car traffic lights
  digitalWrite(carGreen, HIGH);
  delay(5000); // Keep the green light on for 5 second
  digitalWrite(carGreen, LOW);

  digitalWrite(carYellow, HIGH);
  delay(3000); // Keep the yellow light on for 5 second
  digitalWrite(carYellow, LOW);

  // Pedestrian crossing
  digitalWrite(carRed, HIGH);
  digitalWrite(pedRed, LOW);
  digitalWrite(pedGreen, HIGH);
  delay(crossTime);

  for (int x = 0; x < 10; x++) {
    digitalWrite(pedGreen, HIGH);
    digitalWrite(buzzer, HIGH);
    delay(250);
    digitalWrite(pedGreen, LOW);
    digitalWrite(buzzer, LOW);
    delay(250);
  }

  digitalWrite(pedRed, HIGH);
  delay(1000);

  // Reset traffic lights
  digitalWrite(carRed, LOW);
  digitalWrite(carGreen, HIGH);
  digitalWrite(carYellow, LOW);

  // Record the current time for the next change
  changeTime = millis();
}