#include <IRremote.h>
#include <LiquidCrystal_I2C.h>
#include <string.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
int Cursor = 0;
int Line = 0;


IRrecv receiver(2);
String a = "";
String b = "";
void setup()
{

  receiver.enableIRIn(); // Start the receiver
  lcd.init();
  lcd.backlight();
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  lcd.setCursor(0,0);
  lcd.print("wuweiqi-finaltest");

}

void loop()
{
  int y = analogRead(A0);
  int x = analogRead(A1);
 
 // Checks received an IR signal
  if (receiver.decode()) {
    lcd.clear();
    translateIR();
    b+=a;
    lcd.setCursor(Cursor,Line);
    lcd.print(b);
    receiver.resume();  // Receive the next value
    
  }

  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);
  }
}


char translateIR()
{
  // Takes command based on IR code received
  switch (receiver.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 176:
      a="";
      b=b.substring(0,b.length()-1);
      lcd.clear();
      break;
    default:
      lcd.clear();
      lcd.print(receiver.decodedIRData.command);
      lcd.print(" other button");
  }
  }