#include "pitches.h"    // les notes de musique
#include <MD_Parola.h>

/* Constants - define pin numbers for LEDs,
   buttons and speaker, and also the game tones: */
const byte ledPins   [] = {13,12,4,10};
const byte buttonPins[] = {9 ,8 ,7 ,6};
#define SPEAKER_PIN 2

#define MAX_GAME_LENGTH 100

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

/* Global variables - store the game state */
byte gameSequence[MAX_GAME_LENGTH] = {0};
byte gameIndex = 0;

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 2
#define CLK_PIN   A3
#define DATA_PIN  A5
#define CS_PIN    A4

MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

/**
   Set up the Arduino board and initialize Serial communication
*/
void setup() 
{
  Serial.begin(9600);
  for (byte i = 0; i < 4; i++) 
  {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], 1);
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  delay(1000);
  pinMode(SPEAKER_PIN, OUTPUT);
  // The following line primes the random number generator.
  // It assumes pin A0 is floating (disconnected):
  randomSeed(analogRead(A0));
}
/******************************************************************
   The main game loop
******************************************************************/
void loop() {
  // Add a random color to the end of the sequence
  gameSequence[gameIndex] = random(0, 4);    //   nombre aléatoire entre 0 et 3
  gameIndex++;
  if (gameIndex >= MAX_GAME_LENGTH) 
  {
    gameIndex = MAX_GAME_LENGTH - 1;
  }

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

  delay(300);

  if (gameIndex > 0) 
  {
    playLevelUpSound();
    delay(300);
  }
}
/**
   Lights the given LED and plays a suitable tone
*/
void lightLedAndPlayTone(byte ledIndex) 
{
  digitalWrite(ledPins[ledIndex], 0);
  tone(SPEAKER_PIN, gameTones[ledIndex]);
  delay(500);
  digitalWrite(ledPins[ledIndex], 1);
  noTone(SPEAKER_PIN);
}

/**
   Plays the current sequence of notes that the user has to repeat
*/
void playSequence() 
{
  for (int i = 0; i < gameIndex; i++) 
  {
    byte currentLed = gameSequence[i];
    lightLedAndPlayTone(currentLed);
    delay(50);
  }
}

/**
    Waits until the user pressed one of the buttons,
    and returns the index of that button
*/
byte readButtons() 
{
  while (true) 
  {
    for (byte i = 0; i < 4; i++) 
    {
      byte buttonPin = buttonPins[i];
      if (digitalRead(buttonPin) == LOW) 
      {
        return i;
      }
    }
    delay(1);
  }
}

/**
  Play the game over sequence, and report the game score
*/
void gameOver() 
{
  Serial.print("Game over! your score: ");
  Serial.println(gameIndex - 1);
  gameIndex = 0;
  delay(200);

  // Play a Wah-Wah-Wah-Wah sound
  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(5);
    }
  }
  noTone(SPEAKER_PIN);
  delay(500);
}

/**
   Get the user's input and compare it with the expected sequence.
*/
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;
}

/**
   Plays a hooray sound whenever the user finishes a level
*/
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);
}