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

int num1=0;
int num2=0;
int score=0;

boolean btnReset=false;
bool btnCheck=false;
long int interval;

void setup() {
// Serial
 Serial.begin(9600);

// Display setup
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.println("BODOV:");

  lcd.setCursor(7,1);
  lcd.print(score);

  lcd.setCursor(0,0);
  lcd.print("c.1:");

  lcd.setCursor(9,0);
  lcd.print("c.2:");

// Pin setup
DDRD &=~(1<<6);
DDRD &=~(1<<5);

PORTD |=1<<6;
PORTD |=1<<5;
}

void loop() {

if(millis() >= interval){
  genNumber();
  interval = interval +555;
}
  checkNumbers();
  led();
  reset();
}

void genNumber(){
num1= random(1, 5);
num2= random(1, 5);

lcd.setCursor(5, 0);
lcd.print(num1);

lcd.setCursor(14, 0);
lcd.print(num2);
}

void checkNumbers(){
  if((PIND&(1<<5)) !=0 && btnCheck !=true){
    btnCheck=true;
  }
  if((PIND&(1<<5)) ==0 && btnCheck == true){
    btnCheck=false;

    if(num1==num2){
      score= score+1;

      lcd.setCursor(7,1);
      lcd.print("  ");
      lcd.setCursor(7,1);
      lcd.print(score);
    }

    if(num1 != num2){

      if(score>0){
      score= score-1;
      lcd.setCursor(7,1);
      lcd.print("  ");
      lcd.setCursor(7,1);
      lcd.print(score);
      }
    }

  }
}

void led(){
  if(score>=5){
    PORTD |=1<<3;
    PORTD &=~(1<<2);
  }
  if(score<5){
    PORTD |=1<<2;
    PORTD &=~(1<<3);
  }

}

void reset(){
  if((PIND&(1<<6)) !=0 && btnReset !=true){
    btnReset=true;
  }
  if((PIND&(1<<6)) ==0 && btnReset == true){
  btnReset=false;
  Serial.println("Reset");
  score=0;
  lcd.setCursor(7,1);
  lcd.print("  ");
  lcd.setCursor(7,1);
  lcd.print(score);
  }
}