#define LED_GREEN_ENT 23     //pin for green entrance led
#define BUTTON_GREEN_ENT 22  //pin for entrance button
#define LED_RED_EXIT 19      //pin for red exit led
#define BUTTON_RED_EXIT 18   //pin for exit button
#define TRIG_PIN 25
#define ECHO_PIN 26
#define BUZZER_PIN 27

int button_Presses = 0;

void setup() {
  //all LEDs and button are initially off
  pinMode(LED_GREEN_ENT, OUTPUT);
  digitalWrite(LED_GREEN_ENT, LOW);

  pinMode(BUTTON_GREEN_ENT, INPUT);
  digitalWrite(BUTTON_GREEN_ENT, LOW);

  pinMode(LED_RED_EXIT, OUTPUT);
  digitalWrite(LED_RED_EXIT, LOW);

  pinMode(BUTTON_RED_EXIT, INPUT);
  digitalWrite(BUTTON_RED_EXIT, LOW);

  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void checkButtonAndControlLED() {

  //if enter button is 'high', door is open for entrance
  if (digitalRead(BUTTON_GREEN_ENT) == HIGH){
    digitalWrite(LED_GREEN_ENT, HIGH);  //led turns on
    delay(5000);
    digitalWrite(LED_GREEN_ENT, LOW);   //led eventually turns off, door closes
    digitalWrite(BUTTON_GREEN_ENT,LOW);
    button_Presses +=1;
  } 
  else if (digitalRead(BUTTON_GREEN_ENT) == LOW){ //else door is just shut
    digitalWrite(LED_GREEN_ENT, LOW);
  }

  //if exit button is 'high', door is open for entrance
  if (digitalRead(BUTTON_RED_EXIT) == HIGH){
    digitalWrite(LED_RED_EXIT, HIGH);   //led turns on
    delay(5000);
    digitalWrite(LED_RED_EXIT, LOW);    //led eventually turns off, door closes
    digitalWrite(BUTTON_RED_EXIT,LOW);
    button_Presses +=1;
  }
  else if (digitalRead(BUTTON_RED_EXIT) == LOW){ //else door is just shut
    digitalWrite(LED_RED_EXIT, LOW);
  } 
}

void loop() {
  checkButtonAndControlLED();
}