/**
   Simon Game for Arduino with level display

   Copyright (C) 2024, PEDRO Telecomunicação Limited.

   Released under the MIT License. All rigts reserved.
*/

#include "pitches.h"
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

/* Constants - define pin numbers for LEDs,
   buttons and speaker, and also the game tones: */
const uint8_t ledPins[] = {9, 10, 11, 12};
const uint8_t buttonPins[] = {2, 3, 4, 5};
#define SPEAKER_PIN 8


// These are connected to 74HC595 shift register (used to show game score):
const int LATCH_PIN = A1;  // 74HC595 pin 12
const int DATA_PIN = A0;  // 74HC595pin 14
const int CLOCK_PIN = A2;  // 74HC595 pin 11
const int led = 7 ;
#define MAX_GAME_LENGTH 61

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

/* Global variables - store the game state */
uint8_t gameSequence[MAX_GAME_LENGTH] = {0};
uint8_t gameIndex = 1;

/* Global variables - nivel cont */
int cont= 1;

/**
   Set up the Arduino board and initialize Serial communication
*/
void setup() {
  Serial.begin(9600);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(3, 0);
  lcd.print("JOGO DA ");
  lcd.setCursor (3,1);
  lcd.print("MEMORIA ");
  delay (1000);
  lcd.clear();
  delay (1000);
  lcd.setCursor(2, 0);
  lcd.print("  Sistema");
  lcd.setCursor (0,1);
  lcd.print(" PedroOS 5.1.2");
  delay(1500);
  lcd.clear();
  lcd.setCursor(3, 0);
  lcd.print("INICIO EM  ");
  lcd.setCursor (3,1);
  lcd.print("3 SEGUNDOS ");
  delay(1000);
  lcd.clear();
  lcd.setCursor(3, 0);
  lcd.print("BEM-VINDO");
  lcd.setCursor (3, 1);
  lcd.print("NIVEL 1");
    
  delay (2500);

  //lcd.clear();

  for (byte i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(led, OUTPUT);
  pinMode(SPEAKER_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(DATA_PIN, OUTPUT);

  // The following line primes the random number generator.
  // It assumes pin A3 is floating (disconnected):
  randomSeed(analogRead(A3));
}

/* Digit table for the 7-segment display */
const uint8_t digitTable[] = {
  0b11000000,
  0b11111001,
  0b10100100,
  0b10110000,
  0b10011001,
  0b10010010,
  0b10000011,
  0b11011000,
  0b10000000,
  0b10010000,

};
const uint8_t E = 0b10000110;
const uint8_t r = 0b10101111;

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]);
}

/**
   Lights the given LED and plays a suitable tone
*/
void lightLedAndPlayTone(byte ledIndex) {
  digitalWrite(ledPins[ledIndex], HIGH);
  tone(SPEAKER_PIN, gameTones[ledIndex]);
  delay(300);
  digitalWrite(ledPins[ledIndex], LOW);
  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(200);
  }
}

/**
    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("Fim do jogo! Seu nivel= ");
  Serial.println(gameIndex - 1);
  gameIndex = 1;
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("  VOCE ERROU! ");
  lcd.setCursor (0,1);
  lcd.print("TENTE NOVAMENTE");
  
    // 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);

  sendScore(E, r);
  lcd.init();
  delay(300);

}

/**
   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() {
  lcd.clear();
  cont+=1;
  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);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(3, 0);
  lcd.print("VOCE ACERTOU ");
  lcd.backlight();
  lcd.setCursor(4, 1);
  lcd.print ("NIVEL ");
  lcd.backlight();
  lcd.setCursor (10, 1);
  lcd.println(cont);
}

/**
   The main game loop
*/
void loop() {
  displayScore();

  // Add a random color to the end of the sequence
  gameSequence[gameIndex] = random(0, 4);
  gameIndex++;
  if (gameIndex >= MAX_GAME_LENGTH) {
    gameIndex = MAX_GAME_LENGTH - 1;
  }
 
  playSequence();
  if (!checkUserSequence()) {
    gameOver();
    digitalWrite(led,1);
     delay (700);
     digitalWrite(led,0);
  }
  delay(1000);

  if (gameIndex > 1) {
    playLevelUpSound();
    delay(300);

  }
  
}