#include <TimerOne.h>
#include <MultiFuncShield.h>

#define button A1
#define button2 A2
#define button3 A3


bool val;
bool val2;
bool val3;

byte ended = false;

void setup() {
  Timer1.initialize();
  MFS.initialize(&Timer1);

  pinMode(button,OUTPUT);
  digitalWrite(button,HIGH);

  pinMode(button2,OUTPUT);
  digitalWrite(button2,HIGH);

  pinMode(button3,OUTPUT);
  digitalWrite(button3,HIGH);


  Serial.begin(9600);
}

int users_in = 0;
bool state1 = true;
bool state2 = true;
bool state3 = true;
int cislo;

void loop() {
  

  if(users_in != 0){
    MFS.write(int(users_in)); 
    users_in--;
    delay(1000);
  }
  else if(!ended){
    ended = true;
    MFS.write(0);
    delay(1000);
    MFS.write("End");
  }

  val = digitalRead(button);
  if(val == LOW){
    users_in = cislo;
    ended = false;
  }
  //----------------------------------------------//
   
  val2 = digitalRead(button2);
  if(val2 == LOW && state2 == true){
    cislo++;
    MFS.write(cislo);
    state2 = false;
    delay(100);
  }
  
  if(val2 == HIGH && state2 == false){
    state2 = true;
  }

  //---------------------------------------------------
  val3 = digitalRead(button3);
  if(val3 == LOW && state3 == true){
    if(cislo > 0)
      cislo--;
    else
      cislo = 0;
    
    MFS.write(cislo);
    state3 = false;
    delay(100);
  }
  
  if(val3 == HIGH && state3 == false){
    state3 = true;
  }




}