/* Hello Wokwi! */
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <IRremote.h>

LiquidCrystal_I2C lcd(0x27,16,2);
int IRPin = 3;
#define LCD_COLUMNS 0x27
#define LCD_LINES 4

String a = "";
String b = "";
int Cursor = 0;
int Line = 0;
int x=512;
int y=512;

void setup(){
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  IrReceiver.begin(IRPin);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
}
void loop(){
  int y = analogRead(A0);
  int x = analogRead(A1);
  if(IrReceiver.decode()){
    translateIR();
    if(a == "-")
    {
      //Serial.println(b.length());
      a = "";
      b=b.substring(0,b.length()-1);
      lcd.clear();
      lcd.setCursor(Cursor,Line);
      lcd.print(b);
    }
    b=b+a;
    lcd.print(a);
  }
  PS2Control(x,y);
}
void translateIR(){
  switch(IrReceiver.decodedIRData.command){
    case 104:a="0";break;
    case 48:a="1";break;
    case 24:a="2";break;
    case 122:a="3";break;
    case 16:a="4";break;
    case 56:a="5";break;
    case 90:a="6";break;
    case 66:a="7";break;
    case 74:a="8";break;
    case 82:a="9";break;
    case 152:a="-";break;
    default:
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("other button!");
      lcd.setCursor(0,1);
      lcd.print("button code:");
      lcd.print(IrReceiver.decodedIRData.command);
  }
  IrReceiver.resume();
}

void PS2Control(int x,int y)
{
  delay(100);
  if(x<350 && Cursor<15){lcd.clear();lcd.setCursor(Cursor+=1,Line);lcd.print(b);}
  if(x>650 && Cursor>0){lcd.clear();lcd.setCursor(Cursor-=1,Line);lcd.print(b);}
  if(y<350 && Line==0){lcd.clear();lcd.setCursor(Cursor,Line+=1);lcd.print(b);}
  if(y>650 && Line==1){lcd.clear();lcd.setCursor(Cursor,Line-=1);lcd.print(b);}
}