#include <LiquidCrystal.h>
#include <Keypad.h>


//       WELCOME!!! PLAY THE GUESSING GAME
//       PRESS # TO START THE GAME
//       CHOOSE THE NUMBER FROM 0 - 9
//       THE GAME WILL SAY HIGHER OR LOWER IF INCORRECT
//       YOU ONLY HAVE 3 CHANCES PER GAME


//       Click # to play again after the screen is blank


LiquidCrystal lcd(8, 9, 10, 11, 12, 13);
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {26, 22, 21, 20}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {19, 18, 17, 16}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

int secretNumber;
int attempts = 3;
bool gameActive = false;

void setup() {
  randomSeed(analogRead(0));
  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("Play Guess the #");
  lcd.setCursor(0, 1);
  lcd.print("Press # to play");
  delay(2000);
  lcd.clear();
}

void loop() {
  if (!gameActive) {
    char key = keypad.getKey();
    if (key == '#') {
      startGame();
    }
  } else {
    char key = keypad.getKey();
    if (key >= '0' && key <= '9') {
      int guess = key - '0';
      checkGuess(guess);
    }
  }
}

void startGame() {
  secretNumber = random(10);
  attempts = 3;
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Choose your");
  lcd.setCursor(0, 1);
  lcd.print("answer: ");
  gameActive = true;
}

void checkGuess(int guess) {
  if (guess == secretNumber) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Congratulations!");
    delay(3000);
    gameActive = false;
    lcd.clear();
  } else {
    lcd.clear();
    lcd.setCursor(0, 1);
    if (guess < secretNumber) {
      lcd.print("Higher");
    } else {
      lcd.clear();
    lcd.setCursor(0, 0);
      lcd.print("Lower");
    }
    attempts--;
    if (attempts == 0) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Game Over!");
      lcd.setCursor(0, 1);
      lcd.print("Answer: ");
      lcd.print(secretNumber);
      delay(3000);
      gameActive = false;
      lcd.clear();
    }
  }
}