#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

#define CLK_PIN   13
#define DATA_PIN  11
#define CS_PIN    10

#define VERT_PIN A0
#define HORZ_PIN A1
#define SEL_PIN  2

const int buttonUp = 6;
const int buttonDown = 7;
const int buttonLeft = 8;
const int buttonRight = 9;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

byte arrowUp[] = {
  B00100,
  B01010,
  B10101,
  B00100,
  B00100,
  B00100,
  B00100,
  B00100
};

byte arrowDown[] = {
  B00100,
  B00100,
  B00100,
  B00100,
  B00100,
  B10101,
  B01110,
  B00100
};

byte arrowRight[] = {
  B00000,
  B00100,
  B00010,
  B11111,
  B00010,
  B00100,
  B00000,
  B00000
};

byte arrowLeft[] = {
  B00000,
  B00100,
  B01000,
  B11111,
  B01000,
  B00100,
  B00000,
  B00000
};

void setup() {
  // Init
  lcd.init();
  lcd.createChar(0, arrowUp);
  lcd.createChar(1, arrowDown);
  lcd.createChar(2, arrowLeft);
  lcd.createChar(3, arrowRight);
  lcd.backlight();
  lcd.setCursor(5, 2); //X,Y
  lcd.write(0);
  lcd.setCursor(15, 2);
  lcd.write(1);

  lcd.setCursor(9, 0);
  lcd.print("||");
  lcd.setCursor(9, 1);
  lcd.print("||");
  lcd.setCursor(9, 2);
  lcd.print("||");
  lcd.setCursor(9, 3);
  lcd.print("||");

  pinMode(buttonUp, INPUT);
  pinMode(buttonDown, INPUT);
  pinMode(buttonLeft, INPUT);
  pinMode(buttonRight, INPUT);

  Serial.begin(115200);



}


void loop() {
  long next_arrow = random(4); //Generate random number
  lcd.setCursor(5, 2); // Set cursor for anonymous arrow position
  //next_arrow = 0;
  // as we store custom object (arrow) in number, we can just write random number value to display
  lcd.write(next_arrow);

  delay(1000);
  // The display is showing the up arrow:P
  if (next_arrow == 0) {
    // We have to read the value of buttonUp:)
    int newValue = digitalRead(buttonUp);
    Serial.println(newValue);

    // if (newValue == HIGH) {
    //   lcd.setCursor(12, 2);
    //   lcd.write(next_arrow);

    // } else {
    //   gameOver();
    // }
  } // The display is showing the Down arrow:)
  else if (next_arrow == 1) {
    // We have to read the value of buttonUp:)
    int newValue = digitalRead(buttonDown);
    Serial.println(newValue);
    // if (newValue == HIGH) {
    //   lcd.setCursor(12, 2);
    //   lcd.write(next_arrow);

    // } else {
    //   gameOver();
    // }
  } // The display is showing the Left arrow:)
  else if (next_arrow == 2) {
    // We have to read the value of buttonLeft:)
    int newValue = digitalRead(buttonLeft);
    Serial.println(newValue);
    // if (newValue == HIGH) {
    //   lcd.setCursor(12, 2);
    //   lcd.write(next_arrow);

    // } else {
    //   gameOver();
    // }
  } // The display is showing the Right arrow:)
  else if (next_arrow == 3) {
    // We have to read the value of buttonRight:)
    int newValue = digitalRead(buttonRight);
    Serial.println(newValue);
    // if (newValue == HIGH) {
    //   lcd.setCursor(12, 2);
    //   lcd.write(next_arrow);

    // } else {
    //   gameOver();
    // }
  }




}

void gameOver() {
  lcd.setCursor(0, 12);
  lcd.print("GAME OVER!");
}