#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
int cislo, strana = 0;
bool test = true;
bool test1 = true;
int i = 0;
void setup() {
  DDRC &= ~(1<<0); 
  DDRD |= 0b00001100; //aj 0 aj 1 ako vystup
  lcd.begin(16,2);
  PORTC |= 1<<0; //pull up tlacidlo vpravo
  randomSeed(analogRead(A0));
  Serial.begin(9600);
  krok('r');
  krok('r') ;

}

void loop() {
  if((PINC& (1<<0)) == 0 && test == true){
    strana = cislo;
    cislo = random(0,60);
    lcd.setCursor(0,0);
    lcd.print(cislo);
    if(strana < cislo){
      for(int i = 0; i < cislo - strana ; i++){
        krok('r');
      }
    }
     if(strana > cislo){
    for(int i = 0; i< strana - cislo; i++){
    krok('l');
    }  
    }

    test = false;
  }
   if((PINC& (1<<0)) != 0 && test == false){
    test = true;
  }
}

void krok(char smer){
  if(smer == 'r')
  {
  PORTD |= 1<<2;
  PORTD |= 1<<3;
  delay(200);
  PORTD &= ~(1<<3);  
  }
  else if(smer == 'l'){
    PORTD &= ~(1<<2);
    PORTD |= 1<<3;
    delay(200);
    PORTD &= ~(1<<3); 
    
  }
}