//lcd
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
//servo
#include <Servo.h>
Servo servo;
//led & button
#define red 13
#define yellow 12 
#define green 11
#define btn 7
//sensor
#define trig 2
#define echo 3

bool mobil = false;
bool mobil1 = false;
bool cmobil = false;
int mobilcount = 0;
bool clearstate = false;
int intervalclear = 700;
unsigned long timesave = 0;


void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  servo.attach(4);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(red, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(btn, INPUT);
  lcd.home();
  lcd.print("simulasi portal");
  delay(1000);
  lcd.clear();
  servo.write(0);
}
float j() {
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  int durasi = pulseIn(echo, HIGH);
  return durasi / 58.475;
}

void loop() {
  // put your main code here, to run repeatedly:
  unsigned long time = millis();
  if (time - timesave > intervalclear) {
    clearstate = !clearstate;
    if (clearstate) {
      lcd.clear();
    }
    timesave = time;
  }
  int button = digitalRead(btn);
  int jarak = j();
  if (jarak < 100) {
    mobil = true;
    mobil1 = true;
  } else {
    mobil = false;
  }
  if (!mobil) {
    lcd.setCursor(0, 0);
    lcd.print("Toko Jamal");
    digitalWrite(red, HIGH);
    digitalWrite(yellow, LOW);
    digitalWrite(green, LOW);
    cmobil = false;
    servo.write(90);
  }

  if (mobil) {
    digitalWrite(yellow, HIGH);
    digitalWrite(red, LOW);
    lcd.setCursor(0, 0);
    lcd.print("Selamat Datang");
    lcd.setCursor(0, 1);
    lcd.print("Tekan Tombol <=");
    if (button == LOW) {
      while (mobil1) {
        if (!cmobil) {
          mobilcount++;
          cmobil = true;
        }
        unsigned long time = millis();
        if (time - timesave > intervalclear) {
          clearstate = !clearstate;
          if (clearstate) {
            lcd.clear();
          }
          timesave = time;
        }
        servo.write(180);
        digitalWrite(green, HIGH);
        digitalWrite(yellow, LOW);
        digitalWrite(red, LOW);
        lcd.setCursor(0, 0);
        lcd.print("Silahkan Jalan");
        lcd.setCursor(0, 1);
        lcd.print("Ticket : ");
        lcd.print(mobilcount);
        lcd.print("#");
        digitalWrite(trig, HIGH);
        delayMicroseconds(10);
        digitalWrite(trig, LOW);
        int durasi = pulseIn(echo, HIGH);
        if (durasi / 58.475 > 100) {
          mobil1 = false;
        }
      }
    }
  }

}