#ifdef __AVR__
  #include <avr/power.h>
#endif

long randNumber;
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);

boolean oldSwitchState = LOW;
boolean newSwitchState = LOW;
byte state = 0;

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(0, INPUT_PULLUP);
  pinMode(1, INPUT_PULLUP);
  pinMode(2, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
  pinMode(5, INPUT_PULLUP);
  pinMode(6, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);

}

int value = -1;
void loop() 
{
    lcd.setCursor(0, 0);
    lcd.print("Work Together To");
    lcd.setCursor(0, 1);
    lcd.print("Match The Number To");
    lcd.setCursor(0, 2);
    lcd.print("Get All 4 Codes");
    
    //randomSeed(analogRead(0));
    //randNumber = random(100, 255-1);

     if (state > 3) {
        state = 0;
      }

    if (state == 0)
    {
    lcd.setCursor(11, 3);
    lcd.print("254 =");

  if (PIND != value) 
  {
    lcd.setCursor(17, 3);
    lcd.print(PIND);
    lcd.print("   ");
    value = PIND;
  }
  if (PIND == 254)
  {
    lcd.clear();
    lcd.setCursor(2, 0);
    lcd.print("Box 1 Code: 1234");
    lcd.setCursor(4, 2);
    lcd.print("Code 1 Of 4");
    lcd.setCursor(0, 3);
    lcd.print("You Must Get All 4!");
    delay(5000);
    lcd.clear();
    state++;
  }
    }
    if (state == 1)
    {
    lcd.setCursor(11, 3);
    lcd.print("127 =");

  if (PIND != value) 
  {
    lcd.setCursor(17, 3);
    lcd.print(PIND);
    lcd.print("   ");
    value = PIND;
  }
  if (PIND == 127)
  {
    lcd.clear();
    lcd.setCursor(2, 0);
    lcd.print("Box 2 Code: 5678");
    lcd.setCursor(4, 2);
    lcd.print("Code 2 Of 4");
    lcd.setCursor(0, 3);
    lcd.print("You Must Get All 4!");
    delay(5000);
    lcd.clear();
    state++;
  }
    }
    if (state == 2)
    {
    lcd.setCursor(11, 3);
    lcd.print("191 =");

  if (PIND != value) 
  {
    lcd.setCursor(17, 3);
    lcd.print(PIND);
    lcd.print("   ");
    value = PIND;
  }
  if (PIND == 191)
  {
    lcd.clear();
    lcd.setCursor(2, 0);
    lcd.print("Box 3 Code: 9012");
    lcd.setCursor(4, 2);
    lcd.print("Code 3 Of 4");
    lcd.setCursor(0, 3);
    lcd.print("You Must Get All 4!");
    delay(5000);
    lcd.clear();
    state++;
  }
    }
    if (state == 3)
    {
    lcd.setCursor(11, 3);
    lcd.print("223 =");

  if (PIND != value) 
  {
    lcd.setCursor(17, 3);
    lcd.print(PIND);
    lcd.print("   ");
    value = PIND;
  }
  if (PIND == 223)
  {
    lcd.clear();
    lcd.setCursor(2, 0);
    lcd.print("Box 4 Code: 3456");
    lcd.setCursor(4, 2);
    lcd.print("Code 4 Of 4");
    lcd.setCursor(0, 3);
    lcd.print("You Must Get All 4!");
    delay(5000);
    lcd.clear();
    state++;
  }
    }
}