#include <LiquidCrystal_I2C.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>


LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27,20,4);

byte pacmanUp[8] = {
  B00000,
  B00000,
  B00000,
  B11011,
  B10101,
  B10101,
  B10001,
  B01110
};
byte pacmanDown[8] = {
  B00000,
  B00000,
  B00000,
  B01110,
  B10001,
  B10101,
  B10101,
  B11011
};

byte pacmanRight[8] = {
  B00000,
  B00000,
  B00000,
  B01111,
  B10001,
  B10110,
  B10001,
  B01111
};

byte pacmanLeft[8] = {
  B00000,
  B00000,
  B00000,
  B11110,
  B10001,
  B01101,
  B10001,
  B11110
};

byte gift[8] = {
  B00000,
  B01010,
  B00100,
  B11111,
  B10101,
  B11011,
  B10101,
  B11111
};

int x=0;
int y=0;
int xGift;
int yGift;
int score;
void setup() {
 Serial.begin(9600);
//  pin setup
 pinMode(13, INPUT_PULLUP);
 pinMode(12, INPUT_PULLUP);

//  display
lcd.init();
lcd.backlight();
lcd.blink();

//  characters setup
lcd.createChar(0, pacmanRight);
lcd.createChar(1, pacmanLeft);
lcd.createChar(2, pacmanUp);
lcd.createChar(3, pacmanDown);
lcd.createChar(5, gift);

// gift position
xGift=(rand()%19);
yGift=(rand()%3);

lcd.setCursor(0,0);
lcd.write(byte(0));

lcd.setCursor(xGift,yGift);
lcd.write(byte(5));
lcd.setCursor(0,0);
}

void loop() { 
// analog read for joystick
int xValue = analogRead(12);
int yValue = analogRead(13);
delay(100);

if(x<19){
if(xValue == 0){
  lcd.setCursor(x,y);
  lcd.print(" ");
  x++;
  lcd.setCursor(x,y);
  lcd.write(byte(0));
};
};

if(x>0){
if(xValue == 4095){
  lcd.setCursor(x,y);
  lcd.print(" ");
  x--;
  lcd.setCursor(x,y);
  lcd.write(byte(1));
};
};

if(y<3){
if(yValue == 0){
  lcd.setCursor(x,y);
  lcd.print(" ");
  y++;
  lcd.setCursor(x,y);
  lcd.write(byte(3));
};
};

if(y>0){
if(yValue == 4095){
  lcd.setCursor(x,y);
  lcd.print(" ");
  y--;
  lcd.setCursor(x,y);
  lcd.write(byte(2));
  
};
};

if(x == xGift && y == yGift ){
score++;
Serial.println("Tvoje skore: ");
Serial.println(score);
xGift=(rand()%19);
yGift=(rand()%3);
lcd.setCursor(xGift,yGift);
lcd.write(byte(5));
};
}