#include "pitches.h"



const uint8_t buttonPins[] = {0, 1, 2, 3};
const uint8_t ledPins[] = {8, 7, 6, 5};
#define SPEAKER_PIN 10


const int LATCH_PIN = 18;  
const int DATA_PIN = 19;   
const int CLOCK_PIN = 9;  

#define MAX_GAME_LENGTH 100

const int gameTones[] = { NOTE_G3, NOTE_C4, NOTE_E4, NOTE_G5};


uint8_t gameSequence[MAX_GAME_LENGTH] = {0};
uint8_t gameIndex = 0;

void setup() {
  Serial.begin(9600);
  for (byte i =0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(DATA_PIN, OUTPUT);


  randomSeed(analogRead(4));
}


const uint8_t digitTable[] = {
  0b11000000,
  0b11111001,
  0b10100100,
  0b10110000,
  0b10011001,
  0b10010010,
  0b10000010,
  0b11111000,
  0b10000000,
  0b10010000,
};
const uint8_t DASH = 0b10111111;

void sendScore(uint8_t high, uint8_t low) {
  digitalWrite(LATCH_PIN, LOW);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, low);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, high);
  digitalWrite(LATCH_PIN, HIGH);
}

void displayScore() {
  int high = gameIndex % 100 / 10;
  int low = gameIndex % 10;
  sendScore(high ? digitTable[high] : 0xff, digitTable[low]);
}


void lightLedAndPlayTone(byte ledIndex) {
  digitalWrite(ledPins[ledIndex], HIGH);
  tone(SPEAKER_PIN, gameTones[ledIndex]);
  delay(300);
  digitalWrite(ledPins[ledIndex], LOW);
  noTone(SPEAKER_PIN);
}

void playSequence() {
  for (int i = 0; i < gameIndex; i++) {
    byte currentLed = gameSequence[i];
    lightLedAndPlayTone(currentLed);
    delay(50);
  }
}


byte readButtons() {
  while (true) {
    for (byte i = 0; i < 4; i++) {
      byte buttonPin = buttonPins[i];
      if (digitalRead(buttonPin) == LOW){
        return i;
      }
    }
    delay(1);
  }
}

void gameOver() {
  Serial.print("Game over! your score: ");
  Serial.println(gameIndex - 1);
  gameIndex = 0;
  delay(200);

 
  tone(SPEAKER_PIN, NOTE_DS5);
  delay(300);
  tone(SPEAKER_PIN, NOTE_D5);
  delay(300);
  tone(SPEAKER_PIN, NOTE_CS5);
  delay(300);
  for (byte i= 0; i < 10; i++) {
    for (int pitch = -10; pitch <= 10; pitch++) {
      tone(SPEAKER_PIN, NOTE_C5 + pitch);
      delay(6);
    }
  }
  noTone(SPEAKER_PIN);

  sendScore(DASH, DASH);
  delay(500);
}


bool checkUserSequence() {
  for (int i = 0; i < gameIndex; i++) {
    byte expectedButton = gameSequence[i];
    byte actualButton = readButtons();
    lightLedAndPlayTone(actualButton);
    if (expectedButton != actualButton) {
      return false;
    }
  }

  return true;
}


void playLevelUpSound() {
  tone(SPEAKER_PIN, NOTE_E4);
  delay(150);
  tone(SPEAKER_PIN, NOTE_G4);
  delay(150);
  tone(SPEAKER_PIN, NOTE_E5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_C5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_D5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_G5);
  delay(150);
  noTone(SPEAKER_PIN);
}


void loop() {
  displayScore();

 
  gameSequence[gameIndex] = random(0, 4);
  gameIndex++;
  if (gameIndex >= MAX_GAME_LENGTH) {
    gameIndex = MAX_GAME_LENGTH - 1;
  }

  playSequence();
  if (!checkUserSequence()) {
    gameOver();
  }

  delay(300);

  if (gameIndex > 0) {
    playLevelUpSound();
    delay(300);
  }
}



#define NOTE_B0   31
#define NOTE_C1   33
#define NOTE_CS1  35
#define NOTE_D1   37
#define NOTE_DS1  39
#define NOTE_E1   41
#define NOTE_F1   44
#define NOTE_FS1  46
#define NOTE_G1   49
#define NOTE_GS1  52
#define NOTE_A1   55
#define NOTE_AS1  58
#define NOTE_B1   62
#define NOTE_C2   65
#define NOTE_CS2  69
#define NOTE_D2   73
#define NOTE_DS2  78
#define NOTE_E2   82
#define NOTE_F2   87
#define NOTE_FS2  93
#define NOTE_G2   98
#define NOTE_GS2  104
#define NOTE_A2   110
#define NOTE_AS2  117
#define NOTE_B2   123
#define NOTE_C3   131
#define NOTE_CS3  139
#define NOTE_D3   147
#define NOTE_DS3  156
#define NOTE_E3   165
#define NOTE_F3   175
#define NOTE_FS3  185
#define NOTE_G3   196
#define NOTE_GS3  208
#define NOTE_A3   220
#define NOTE_AS3  233
#define NOTE_B3   247
#define NOTE_C4   262
#define NOTE_CS4  277
#define NOTE_D4   294
#define NOTE_DS4  311
#define NOTE_E4   330
#define NOTE_F4   349
#define NOTE_FS4  370
#define NOTE_G4   392
#define NOTE_GS4  415
#define NOTE_A4   440
#define NOTE_AS4  466
#define NOTE_B4   494
#define NOTE_C5   523
#define NOTE_CS5  554
#define NOTE_D5   587
#define NOTE_DS5  622
#define NOTE_E5   659
#define NOTE_F5   698
#define NOTE_FS5  740
#define NOTE_G5   784
#define NOTE_GS5  831
#define NOTE_A5   880
#define NOTE_AS5  932
#define NOTE_B5   988
#define NOTE_C6   1047
#define NOTE_CS6  1109
#define NOTE_D6   1175
#define NOTE_DS6  1245
#define NOTE_E6   1319
#define NOTE_F6   1397
#define NOTE_FS6  1480
#define NOTE_G6   1568
#define NOTE_GS6  1661
#define NOTE_A6   1760
#define NOTE_AS6  1865
#define NOTE_B6   1976
#define NOTE_C7   2093
#define NOTE_CS7  2217
#define NOTE_D7   2349
#define NOTE_DS7  2489
#define NOTE_E7   2637
#define NOTE_F7   2794
#define NOTE_FS7  2960
#define NOTE_G7   3136
#define NOTE_GS7  3322
#define NOTE_A7   3520
#define NOTE_AS7  3729
#define NOTE_B7   3951
#define NOTE_C8   4186
#define NOTE_CS8  4435
#define NOTE_D8   4699
#define NOTE_DS8  4978