#include <Arduino.h>
#include <LiquidCrystal.h>

const int ledPin1 = 2;
const int ledPin2 = 3;
const int ledPin3 = 4;
const int ledPin4 = 5;

const int buttonPin1 = A0; // Analog pin for button 1
const int buttonPin2 = A1; // Analog pin for button 2
const int buttonPin3 = A2; // Analog pin for button 3
const int buttonPin4 = A3; // Analog pin for button 4

const int rs = 12, en = 11, d4 = 7, d5 = 6, d6 = 10, d7 = 9;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int score = 0;
int level = 1;
int correctButton = 0; // Store the correct button to be pressed
int buttonPressed = 0; // Store the button pressed by the player

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);

  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);
  pinMode(buttonPin4, INPUT);

  lcd.begin(16, 2);
  lcd.print("Level: ");
  lcd.setCursor(0, 1);
  lcd.print("Score: ");
}

void loop() {
  lcd.setCursor(7, 0);
  lcd.print(level);

  // Generate random blinking pattern for each LED based on current level
  for (int i = 0; i < level; i++) {
    correctButton = random(1, 5); // Randomly choose the correct button
    flashLED(correctButton); // Flash the corresponding LED
    delay(1000); // Delay between each LED flash
  }

  // Check if any button is pressed
  if (digitalRead(buttonPin1) == HIGH) buttonPressed = 1;
  else if (digitalRead(buttonPin2) == HIGH) buttonPressed = 2;
  else if (digitalRead(buttonPin3) == HIGH) buttonPressed = 3;
  else if (digitalRead(buttonPin4) == HIGH) buttonPressed = 4;

  // Check if the correct button is pressed
  if (buttonPressed == correctButton) {
    score++; // Increase score by 1
    buttonPressed = 0; // Reset button pressed
  }

  // Update LCD display
  lcd.setCursor(7, 1);
  lcd.print(score);
  
  delay(100); // Adjust delay as needed for button responsiveness
}

void flashLED(int ledNum) {
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  digitalWrite(ledPin4, LOW);

  switch (ledNum) {
    case 1:
      digitalWrite(ledPin1, HIGH);
      break;
    case 2:
      digitalWrite(ledPin2, HIGH);
      break;
    case 3:
      digitalWrite(ledPin3, HIGH);
      break;
    case 4:
      digitalWrite(ledPin4, HIGH);
      break;
    default:
      break;
  }
}