#include <LiquidCrystal_I2C.h>
#include <Servo.h>

#define buttonPin 15
#define dice 14
#define resett 15
#define trigPin 10
#define echoPin 11

char digit[6] = {0x02, 0x79, 0x24, 0x30, 0x19, 0x12};
int pin[7] = {6, 5, 4, 3, 2, 1, 0};
Servo myservo;


LiquidCrystal_I2C lcd(0x27, 16, 2);

void checkDistance();

void setup()
{
  lcd.begin(16, 2);
  lcd.print("Please Push");
  lcd.setCursor(0, 1);
  lcd.print("The Button");

  myservo.attach(8);


  for (int i = 0; i < 7; i++)
    pinMode(pin[i], OUTPUT);

  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(dice, INPUT);
  pinMode(resett, INPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  int temp = 0x40;

  for (int i = 0; i < 7; i++)
  {
    int temp1 = temp & 0x01;
    digitalWrite(pin[i], temp1);
    temp = temp >> 1;
  }

  delay(10000);
  lcd.clear();
}

void loop()
{
  static bool buttonState = HIGH;
  static bool lastButtonState = HIGH;
  static unsigned long lastDebounceTime = 0;
  static unsigned long debounceDelay = 50;

  int reading = digitalRead(buttonPin);

  if (reading != lastButtonState)
  {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay)
  {
    if (reading != buttonState)
    {
      buttonState = reading;

      if (buttonState == LOW)
      {

        int temp = rand();

        int k = temp % 6;
        temp = digit[k];

        wait();

        for (int i = 0; i < 7; i++)
        {
          int temp1 = temp & 0x01;
          digitalWrite(pin[i], temp1);
          temp = temp >> 1;
        }

        delay(200);

      
        openServo();
      }
    }
  }

  checkDistance();

  lastButtonState = reading;
}

void wait()
{
  for (int m = 0; m < 10; m++)
  {
    for (int k = 0; k < 6; k++)
    {
      int ch = digit[k];

      for (int l = 0; l < 7; l++)
      {
        char tem2 = ch & 0x01;
        digitalWrite(pin[l], tem2);
        ch = ch >> 1;
      }

      delay(50);
    }
  }
}

void openServo()
{
  myservo.write(0);
  delay(1000);
  myservo.write(90);
}

void checkDistance()
{
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  long duration = pulseIn(echoPin, HIGH);
  int distance = duration * 0.034 / 2;

  int servoAngle = map(distance, 2, 400, 0, 180);
  myservo.write(servoAngle);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Distance: ");
  lcd.print(distance);
  lcd.print(" cm");
  delay(500);
}