// Define the time duration for actions (1 second)
int timer = 200;

// Define pins for LEDs, buzzer, and buttons
int ledPin1 = 1;
int ledPin2 = 2;
int ledPin3 = 3;
const int buzzer = 4;
const int button1 = 8;
const int button2 = 9;
const int button3 = 10;

// Custom sound function
void playRoboticSound() {
  // Play a custom sound using the buzzer
  for (int i = 0; i < 3; i++) {
    tone(buzzer, 200); // Generate a 200 Hz tone on the buzzer
    delay(200);         // Wait for 200 milliseconds
    noTone(buzzer);      // Turn off the buzzer
    delay(200);         // Wait for another 200 milliseconds
  }
}

void setup() {
  // Initialize pins as OUTPUT or INPUT_PULLUP
  for (int thisPin = 1; thisPin < 5; thisPin++) {
    pinMode(thisPin, OUTPUT);          // Set LED pins as OUTPUT
    pinMode(buzzer, OUTPUT);          // Set the buzzer pin as OUTPUT
    pinMode(button1, INPUT_PULLUP);    // Set button1 pin as INPUT_PULLUP
    pinMode(button2, INPUT_PULLUP);    // Set button2 pin as INPUT_PULLUP
    pinMode(button3, INPUT_PULLUP);    // Set button3 pin as INPUT_PULLUP
  }
}

void loop() {
  // Check if the red button is pressed
  int value1 = digitalRead(button1);
  if (value1 == 0) { // If button1 is pressed (active LOW)
    // Turn on LEDs one by one
    for (int thisPin = 1; thisPin < 5; thisPin++) {
      digitalWrite(thisPin, HIGH);  // Turn on the LED
      delay(timer);                 // Wait for the specified timer duration
      if (thisPin == 4) {
        playRoboticSound(); // Use the custom sound function
      }
      digitalWrite(thisPin, LOW);   // Turn off the LED
    }
    
    // Turn off LEDs in reverse order
    for (int thisPin = 4; thisPin >= 1; thisPin--) {
      digitalWrite(thisPin, HIGH); // Turn on the LED
      delay(timer);                // Wait for the specified timer duration
      digitalWrite(thisPin, LOW);  // Turn off the LED
      break;                       // Break out of the loop
    }
  }

  // Check if the green button is pressed
  int value2 = digitalRead(button2);
  if (value2 == 0) { // If button2 is pressed (active LOW)
    // Turn on LEDs one by one
    for (int thisPin = 1; thisPin < 5; thisPin++) {
      digitalWrite(thisPin, HIGH);  // Turn on the LED
      delay(timer);                 // Wait for the specified timer duration
      if (thisPin == 4) {
        playRoboticSound(); // Use the custom sound function
      }
      digitalWrite(thisPin, LOW);   // Turn off the LED
    }
    
    // Turn off LEDs in reverse order
    for (int thisPin = 4; thisPin >= 1; thisPin--) {
      digitalWrite(thisPin, HIGH); // Turn on the LED
      delay(timer);                // Wait for the specified timer duration
      digitalWrite(thisPin, LOW);  // Turn off the LED
    }
  }

  // Check if the Blue button is pressed
  int value3 = digitalRead(button3);
  if (value3 == 0) { // If button3 is pressed (active LOW)
    digitalWrite(ledPin1, HIGH);  // Turn on LED1
    digitalWrite(ledPin2, HIGH);  // Turn on LED2
    delay(timer);                // Wait for the specified timer duration
    digitalWrite(ledPin1, LOW);   // Turn off LED1
    digitalWrite(ledPin2, LOW);   // Turn off LED2
    digitalWrite(ledPin3, HIGH);  // Turn on LED3
    playRoboticSound();           // Use the custom sound function
    digitalWrite(ledPin3, LOW);   // Turn off LED3


    // Turn off the LED light 3
    digitalWrite(ledPin3, LOW);

  }
}