#define DV_PIN 7
#define Senser 6
unsigned int myinput = 0;
const int passwordLength = 3;
int correctPassword[passwordLength] = { 1, 2, 4 };
int enteredPassword[passwordLength];
int inputIndex = 0;
unsigned int Sensor;
int tigger = 0;


void setup() {
  DDRB |= 0b00111000;
  DDRC &= 0b11000000;
  DDRD = 0;
  pinMode(DV_PIN, INPUT);
  pinMode(Sensor, INPUT);
}

void IR_Reflect_Sensor() {
  PORTB &= ~0b00100000;
  if (digitalRead(Senser)) {
    if (Sensor == 0) {
      PORTB ^= 0x20;
    }
  }
  delay(100);
}
int index = 0;
void CHECKPASSWORD() {

  int customKey = myinput;

  if (customKey) {
    enteredPassword[index] = customKey;
    index++;

    if (index == passwordLength) {

      delay(1000);
      if (checkEnteredPassword()) {
        PORTB ^= 0b001000;

      } else {
        PORTB ^= 0b010000;
        delay(100);
      }
      delay(2000);
      index = 0;
      memset(enteredPassword, 0, sizeof(enteredPassword));
    }
  }
}

bool checkEnteredPassword() {
  for (int i = 0; i < passwordLength; i++) {
    if (enteredPassword[i] != correctPassword[i]) {
      return false;
    }
  }
  return true;
}

void KEYPAD() {
  if (digitalRead(PORTC & 0b01111111)) {
    myinput = PINC & 0b00111111;
    if (myinput == 1 || myinput == 2 || myinput == 4 || myinput == 8 || myinput == 16 || myinput == 32) {
      delay(100);
    }
  }
}


void loop() {
  IR_Reflect_Sensor();
  PORTB |= 0b00011000;
  if (digitalRead(Senser) == LOW) {
    if (digitalRead(DV_PIN) == LOW) {
      KEYPAD();
    }
    CHECKPASSWORD();
  }
  delay(100);
}