#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int backlightState = HIGH;
int e = 0;                                       //used for erasing pacman
int i = 0;                                      //used for positioning pacman
int x;                                         //food for line 0  
byte pacman[8] = {                            //pacman 
  B00000,
  B01110,
  B11011,
  B11110,
  B11100,
  B11111,
  B01110,
  B00000};
byte pacman_food[8] = {                      //pacman food

  B00000,
  B00000,
  B00100,
  B01110,
  B01110,
  B00100,
  B00000};
byte blank[8] = {                           //blank pixels
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000 };
byte reversed_pacman[8] =                  //reversed pacman
  {
  B00000,
  B01110,
  B11011,
  B01111,
  B00111,
  B11111,
  B01110,
  B00000 };






void move()                               //moving pacman to the right
  {
    lcd.setCursor(i,0);
    lcd.write (3);
    i=i+1;
    delay(400);
    lcd.setCursor(e,0);
    lcd.write(2);
    e=e+1;
    delay(50);
  }
void move2()                             //moving pacman to the left
 {
  if(i>0){
  lcd.setCursor(i,0);
  lcd.write(4);
  i=i-1;
  delay(400);
  lcd.setCursor(e,0);
  lcd.write(2);
  e=e-1;}
  }

 
  
void food()                             //filling line 0 with pacman food
 { 
 for (x=0;x<16;x++)
  {
   lcd.setCursor(x,0);
   lcd.write(1);  
  }
  
 }
void setup() {
  Serial.begin(9600);
  pinMode(A1, INPUT);
  lcd.begin(16, 2);
  lcd.createChar(1, pacman_food);
  lcd.createChar(2, blank);
  lcd.createChar(3, pacman);
  lcd.createChar(4, reversed_pacman);
  food();
  }

void loop() {
  lcd.setCursor(0,0);
  int timi=analogRead(A1);
  Serial.println(timi);
  if(timi>512){ 
    move();}
  if(timi<512){
    move2();}
  if(i>=16){
    tone(8, 1000);
    delay(50);
    tone(8, 100);
  }}