#include <LiquidCrystal.h>
#include <Keypad.h>


//setting up LCD 
const int rs =10, en = 9, d4 = 8, d5 = 7, d6 = 6, d7 = 5;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
int cursorColumn = 0;

//setting up keypad
const byte ROWS = 4; 
const byte COLS = 4; 

char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {4, 3, 2, 1}; 
byte colPins[COLS] = {A5, A4, A3, A2}; 
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);


//setting up RGB LED
int redLight = 13;
int greenLight = 12;
int blueLight = 11;8888


//setting up code
String passcode = "0000";
String codeEntered = "";



void setup() {

  lcd.begin(16, 2);

  // Print a message to the LCD.
  lcd.print("Enter your code:");

  pinMode(redLight, OUTPUT);
  pinMode(greenLight, OUTPUT);
  pinMode(blueLight, OUTPUT);
  
}

void loop() {

  char codeIn = keypad.getKey();
  
  if (codeIn){
    if(codeIn == '#'){
      if(codeEntered == passcode){
        digitalWrite(greenLight, LOW);
        digitalWrite(redLight, HIGH);
        digitalWrite(blueLight, HIGH);
        delay(2000);
        digitalWrite(greenLight, LOW);
        digitalWrite(redLight, LOW);
        digitalWrite(blueLight, LOW);

      }else{
        digitalWrite(redLight, LOW);
        digitalWrite(greenLight, HIGH);
        digitalWrite(blueLight, HIGH);
        delay(2000);
        digitalWrite(greenLight, LOW);
        digitalWrite(redLight, LOW);
        digitalWrite(blueLight, LOW);

      }
      lcd.clear();
      lcd.print("Enter your code:");
      codeEntered = "";
      cursorColumn = 0;


    }else{
      cursorColumn ++;
      codeEntered += codeIn;
      lcd.setCursor(cursorColumn,1);
      lcd.print("*");
    }
    
    
    

  }




  
}