/*
  Arduino | coding-help
  Help with quiz-like game
  Asianviking8 - Sunday, February 8, 2026 3:28 PM

  When i run my code(file attached) and play the math quiz,
  it instantly game overs,  I've tried troubleshooting for about
  an hour and asking AI but i can't seem to find the problem.
  what is causing this bug?(look to void Gam5 for the problem area)
*/

// C++ code
//TXT boy game console
#include <LiquidCrystal.h>

const int NUM_BTNS = 4;
const int BTN_PINS[] = {6, 5, 4, 3};
const int BUZZ_PIN = 2;
const int SEED_PIN = A0;

const char* Msg[] = {
  "Yes",
  "No",
  "Try again",
  "Maybe",
  "Definitely",
  "Most likely",
  "Probably not"
};

const char* GAME_NAMES[] = {
  "Menu", "Blackjack", "Guess", "R / P / S",
  "Reaction Timer", "Math Quiz", "Magic 8 Ball"
};

enum game_state {
  MENU_STATE,
  BLJ_STATE,
  GUESS_STATE,
  RPS_STATE,
  REACT_STATE,
  QUIZ_STATE,
  BALL_STATE
};
game_state currGame;

int btnState[NUM_BTNS];
int oldBtnState[NUM_BTNS];
int stateNum = 1;
int oldStateNum = -1;

int Dturn = 0;
int player = 0;
int playerNum = 0;
int dealer = 0;
int menupress = 0;
int bState1 = 0;
int bState2 = 0;
int bState3 = 0;
int Dchance = 0;
int gameFinnish = 0;
int randNum = 0;
int CPUchoice = 0;
int mathA = 0;
int mathB = 0;
int mathC = 0;
int answerRNG = 0;
int fail = 0;
int num1 = 0;
int num2 = 0;
unsigned long startTime = 0;

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

int checkButtons()  {
  int btnNumber = 0;

  for (int i = 0; i < NUM_BTNS; i++) {
    // check each button
    btnState[i] = digitalRead(BTN_PINS[i]);
    if (btnState[i] != oldBtnState[i])  { // if it changed
      oldBtnState[i] = btnState[i];       // remember state for next time
      btnNumber = i + 1;
      //Serial.print("Button ");
      //Serial.print(btnNumber);
      if (btnState[i] == LOW)  {          // was just pressed
        //Serial.println(" pressed.");
      } else {
        btnNumber = -1;                   // was just released
        //Serial.println(" released.");
      }
      delay(20);  // debounce
    }
  }
  return btnNumber;
}

void selectGame(int selectedGame) {
  currGame = selectedGame;
  Serial.println(GAME_NAMES[stateNum]);
  switch (currGame)  {
    case MENU_STATE:
      //Serial.println("Menu");
      break;
    case BLJ_STATE:
      Serial.println("Black Jack");
      //Gam1(); //start blackjack
      break;
    case GUESS_STATE:
      Serial.println("Guess");
      //Gam2(); //start number guess game NOT FINISHED
      break;
    case RPS_STATE:
      Serial.println("R / P / S");
      //Gam3();
      break;
    case REACT_STATE:
      Serial.println("Reaction");
      //Gam4();
      break;
    case QUIZ_STATE:
      Serial.println("Math quiz");
      //Gam5();
      break;
    case BALL_STATE:
      Serial.println("8 Ball");
      //Gam6();
      break;
    default:
      Serial.println("WTF");
  }
}


void setup()  {
  Serial.begin(115200);
  lcd.begin(16, 2);
  for (int i = 0; i < NUM_BTNS; i++)  {
    pinMode(BTN_PINS[i], INPUT_PULLUP);
  }
  randomSeed(analogRead(SEED_PIN));
  // initialize
  currGame = MENU_STATE;
  lcd.setCursor(0, 0);
  lcd.print("Multi-Game Demo");
  lcd.setCursor(6, 1);
  lcd.print("V1.0");
  tone(BUZZ_PIN, 440, 2500);
  delay(400);
  tone(BUZZ_PIN, 220, 250);
  delay(2000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Select game:");
}

void loop() {
  int btnNumber = checkButtons();
  if (btnNumber)  {
    if (btnNumber == 1) {
      //Serial.println("Up button pressed");
      stateNum++;
      if (stateNum > 6 ) stateNum = 1;
    } else if (btnNumber == 2)  {
      //Serial.println("Down button pressed");
      stateNum--;
      if (stateNum < 1 ) stateNum = 6;
    } else if (btnNumber == 3)  {
      //Serial.println("Select button pressed");
      selectGame(stateNum);
    } else if (btnNumber == 4)  {
      Serial.println("Back button pressed");
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Select game:");
      stateNum = 1;
    }

  }
  if (stateNum != oldStateNum)  {
    oldStateNum = stateNum;
    //lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("                ");
    //Serial.println(GAME_NAMES[stateNum]);
    lcd.setCursor(0, 1);
    lcd.print(GAME_NAMES[stateNum]);
  }
}

/*
  void setup()
  {
  pinMode(RNG, INPUT);
  randomSeed(analogRead(RNG)); // sets number generation seed
  lcd.begin(16, 2); // Set up the number of columns and rows on the LCD.
  pinMode( IN1, INPUT);// all IN are buttons
  pinMode( IN2, INPUT);
  pinMode( IN3, INPUT);
  pinMode(SPKR, OUTPUT);
  tone(SPKR, 200, 600);
  delay(100);
  tone(SPKR, 600, 500);
  lcd.setCursor(0, 0);
  lcd.print("  SELECT GAME");
  lcd.setCursor(0, 2);
  lcd.print(" PRESS BUTTON 1");//sets up start menu
  Serial.begin(9600);
  }



  void loop()
  {
  if (pgm_state == MENU_STATE) {
    bState1 = digitalRead(IN1);
    bState2 = digitalRead(IN2);
    bState3 = digitalRead(IN3); // Read inputs
    Serial.println(bState3);

    if (bState1 == HIGH) {
      menupress += 1; //position on menu
      tone(SPKR, 600, 20);
      delay(200);// delay for accuracy
    }
    if (menupress == 1) {
      BLJ(); //start blackjack start menu
    }
    if (menupress == 2) {
      numGuess(); //start number guess game NOT FINISHED
    }
    if (menupress == 3) {
      RPS();
    }
    if (menupress == 4) {
      react();
    }
    if (menupress == 5) {
      quiz();
    }
    if (menupress == 6) {
      RNGball();
    }
    if (menupress > 6) {
      menupress = 1; // if greater than planned selection, go back to start of list
    }
  }

  if (pgm_state == BLJ_STATE) {
    Gam1();
  }
  if (pgm_state == GUESS_STATE) {
    Gam2();
  }
  if (pgm_state == RPS_STATE) {
    Gam3();
  }
  if (pgm_state == REACT_STATE) {
    Gam4();
  }
  if (pgm_state == QUIZ_STATE) {
    Gam5();
  }
  if (pgm_state == BALL_STATE) {
    Gam6();
  }
  }
*/

/*
  void BLJ()
  {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY BLACKJACK?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Press 1 to start.");
    pgm_state = BLJ_STATE;
  }
  }
  void numGuess()
  {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY NUMGUESS?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Guess 1-100");
    randNum = random(1, 100);
    Serial.println(randNum); //numGuess game debugging
    pgm_state =  GUESS_STATE;
  }
  }
  void RPS()
  {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY RPS?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("1=rock  2=paper");
    lcd.setCursor(0, 2);
    lcd.print("   3=scicors");
    randNum = random(1, 3);
    Serial.println(randNum); //numGuess game debugging
    delay(1000);
    pgm_state =  RPS_STATE;

  }
  }
  void react()
  {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY Reaction?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 2);
    lcd.print("Press 3 to start.");;
    CPUchoice = random(1000, 1600);
    Serial.println(CPUchoice); //numGuess game debugging
    delay(1000);
    pgm_state =  REACT_STATE;
  }
  }
  void quiz() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY MATH QUIZ?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("  Keep going");
    lcd.setCursor(0, 2);
    lcd.print("until incorect");
    randNum = random(1, 3);
    delay(1000);
    pgm_state =  QUIZ_STATE;
  }
  }
  void RNGball() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PLAY 8 BALL?");
  lcd.setCursor(0, 2);
  lcd.print("3 = yes 1=next");
  delay(100);
  bState3 = digitalRead(IN3);// read 3rd button
  if (bState3 == 1) {
    lcd.clear();
    lcd.setCursor(0, 2);
    lcd.print("Press 3 to shake.");;
    String randomMessage = Msg[random (0, 6)];
    pgm_state =  BALL_STATE;
  }

  }
*/
/*
  void Gam1() {
  Dchance = random(0, 20);
  //bState1 = digitalRead(IN1);
  //bState2 = digitalRead(IN2);
  //bState3 = digitalRead(IN3); // Read inputs

  // 1. DEALING
  if ((bState1 == 1) && (player + dealer == 0)) {
    player = random(2, 21);
    dealer = random(2, 21);
    refreshBLJ();
    delay(200);
  }

  // 2. PLAYER HITS (Button 3)
  else if (player > 0 && bState3 == 1) {
    tone(BUZZ_PIN, 600, 20);
    player += random(1, 10);
    if (player > 21) {
      lcd.clear();
      lcd.print("  DEALER WINS!");
      lcd.setCursor(0, 2);
      lcd.print("YOU WENT OVER 21");


      delay(2000);
      endGame();
    } else {
      refreshBLJ();
      delay(300);
    }
  }

  else if (player > 0 && bState2 == 1) {
    dealerAI();
  }
  }
  void dealerAI() {
  // Use a while loop so the dealer keeps taking cards until 17
  while (dealer < 17) {
    dealer += random(1, 10);
    tone(BUZZ_PIN, 600, 20);
    refreshBLJ();
    delay(800); // Wait so player can see the dealer's progress
  }

  // Final Scoring Logic
  lcd.clear();
  if (dealer > 21 || player > dealer) {
    lcd.print("   YOU WIN!");
    tone(BUZZ_PIN, 1000, 800);
  } else if (dealer > player) {
    lcd.print("  DEALER WINS!");
    tone(BUZZ_PIN, 200, 800);
  } else {
    lcd.print("  PUSH! (TIE)");
    tone(BUZZ_PIN, 600, 800);
  }

  delay(3000);
  endGame();
  }

  // Helper function to save space and keep LCD updated
  void refreshBLJ() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Player");
  lcd.setCursor(0, 2);
  lcd.print(player);
  lcd.setCursor(8, 0);
  lcd.print("Dealer");
  lcd.setCursor(10, 2);
  lcd.print(dealer);
  }
  void Gam2()
  {
  //bState1 = digitalRead(IN1);
  //bState2 = digitalRead(IN2);
  //bState3 = digitalRead(IN3); // Read inputs
  player = 100;
  if (digitalRead(IN1) == HIGH) {
    playerNum++;
    lcd.clear();
    lcd.setCursor(0, 2);
    lcd.print(playerNum); delay(150);
  }
  if (digitalRead(IN2) == HIGH) {
    playerNum--;
    lcd.clear();
    lcd.setCursor(0, 2);
    lcd.print(playerNum); delay(150);
  }

  if ((digitalRead(IN3) == HIGH) && (playerNum > 0)) {
    lcd.clear();
    if (playerNum == randNum) {
      lcd.print("CORRECT!");
      lcd.setCursor(4, 2);
      lcd.print("score:");
      lcd.setCursor(8, 2);
      lcd.print(player);
      tone(BUZZ_PIN, 500, 400);
      delay(200);
      tone(BUZZ_PIN, 1000, 500); // Victory sound
      delay(2000);
      endGame();// Return to menu
    } else if (playerNum < randNum) {
      lcd.print("HIGHER"); // Feedback logic
      player --;
      delay(400);
    } else {
      lcd.print("LOWER");
      player--;
      delay(400);
    }
    lcd.clear();
  }
  }
  void Gam3()
  {
  //bState1 = digitalRead(IN1);
  //bState2 = digitalRead(IN2);
  //bState3 = digitalRead(IN3); // Read inputs
  if (bState1 == 1) {
    player = 1;
    play();
  } else if (bState2 == 1) {
    player = 2;
    play();
  } else if (bState3 == 1) {
    player = 3;
    Serial.println(player);
    play();
  }
  }
  void play()
  {
  if ( player == randNum) {
    lcd.clear();
    lcd.print("TIE!");
    delay(2000);
    endGame();
  } else if ((player == 1) && (randNum == 2)) {
    lcd.clear();
    lcd.print("YOU LOSE!");
    delay(2000);
    endGame();
  } else if ((player == 2) && (randNum == 1)) {
    lcd.clear();
    lcd.print("YOU WIN!!");
    delay(2000);
    endGame();
  } else if ((player == 2) && (randNum == 3)) {
    lcd.clear();
    lcd.print("YOU LOSE!");
    delay(2000);
    endGame();
  } else if ((player == 3) && (randNum == 2)) {
    lcd.clear();
    lcd.print("YOU WIN!!");
    delay(2000);
    endGame();
  }
  }

  void Gam4()
  {
  //bState3 = digitalRead(IN3);

  if (bState3 == HIGH) {
    lcd.clear();
    lcd.print("ready...");
    delay(CPUchoice);

    lcd.clear();
    lcd.print("PRESS BUTTON 1!!");
    unsigned long startTime = millis(); // Localize for accuracy

    // Check the pin directly in the loop
    while (digitalRead(IN1) == LOW);
    unsigned long reactionTime = millis() - startTime;
    lcd.clear();
    lcd.print("Your time was:");
    lcd.setCursor(0, 2);
    lcd.print(reactionTime / 1000.0);
    lcd.print(" seconds");
    tone(BUZZ_PIN, 500, 400);
    delay(200);
    tone(BUZZ_PIN, 1000, 500); // Victory sound
    delay(2000);
    endGame();
  }
  }
  void Gam5()
  {
  delay(100);
  if (num1 + num2 == 0) {
    Mathset();
  }
  if ((bState3 == 1) && (mathC == answerRNG)) {
    delay(100);
    player + 1;
    num1 = 0;
    num2 = 0;
  }
  if ((bState1 == 1) && (mathA == answerRNG)) {
    delay(100);
    player + 1;
    Mathset();
  }
  if ((bState2 == 1) && (mathB == answerRNG)) {
    delay(100);
    player + 1;
    Mathset();
  }
  if ((bState3 == 1) && (mathC != answerRNG)) {
    delay(100);
    mathEnd();
  }
  if ((bState1 == 1) && (mathA != answerRNG)) {
    delay(100);
    //mathEnd();
  }
  if ((bState2 == 1) && (mathB != answerRNG)) {
    delay(100);
    //mathEnd();
  }
  }
  void Mathset() {
  num1 =  random(1, 100);
  num2 =  random(1, 100);
  answerRNG = num1 + num2;
  if ( randNum == 1) {
    mathA = answerRNG;
    mathB = answerRNG - random(1, 20);
    mathC = answerRNG + random(1, 20);
  } else if ( randNum == 2) {
    mathB = answerRNG;
    mathA = answerRNG - random(1, 20);
    mathC = answerRNG + random(1, 20);
  } else {
    mathC = answerRNG;
    mathB = answerRNG + random(1, 20);
    mathA = answerRNG + random(1, 20);
  }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(num1);
  lcd.setCursor(3, 0);
  lcd.print("+");
  lcd.setCursor(4, 0);
  lcd.print(num2);
  lcd.setCursor(7, 0);
  lcd.print("= ?");
  lcd.setCursor(0, 2);
  lcd.print(mathA);
  lcd.setCursor(5, 2);
  lcd.print(mathB);
  lcd.setCursor(9, 2);
  lcd.print(mathC);
  }
  void mathEnd() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("GAME OVER!");
  lcd.setCursor(0, 2);
  lcd.print("Your score:");
  lcd.setCursor(11, 2);
  lcd.print(player);
  delay(2000);
  endGame();
  }
  void Gam6() {
  if (digitalRead(IN3) == HIGH) {
    lcd.clear();
    lcd.setCursor(0, 0);
    int index = random(0, 6);
    lcd.print(Msg[index]);
    delay(100);
  }
  }
  void endGame() {
  startTime = 0;
  playerNum = 0;
  dealer = 0;
  player = 0;
  Dchance = 0;
  randNum = 0;
  CPUchoice = 0;
  answerRNG = 0;
  mathA = 0;
  mathB = 0;
  mathC = 0;
  //pgm_state = MENU_STATE;
  menupress = 0;
  tone(BUZZ_PIN, 523, 500);
  tone(BUZZ_PIN, 600, 500);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("  SELECT GAME");
  lcd.setCursor(0, 2);
  lcd.print(" PRESS BUTTON 1");//sets up start menu
  }
*/