// Forum: https://forum.arduino.cc/t/pong-paddle-on-lcd-is-updating-too-late/1109845
// Author: niko65
// Not a working project, no buttons are read during a delay.

#include <LiquidCrystal.h>

int buttonState = 0;
int buttonState2 = 0;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

byte hero2[8] = {
  B00000,
  B00000,
  B01110,
  B11111,
  B11111,
  B11111,
  B01110,
  B00000
};

byte hero4[8] = {
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000
};

byte hero5[8] = {
  B00001,
  B00001,
  B00001,
  B00001,
  B00001,
  B00001,
  B00001,
  B00001
};

void setup() {
  pinMode(6, INPUT);
  pinMode(8, INPUT);
  lcd.begin(16, 2);
  lcd.createChar(7, hero2);
  lcd.createChar(9, hero4);
  lcd.createChar(10, hero5);
  lcd.setCursor(1, 0);
  lcd.print("     PONG     ");
  delay(2000);
  lcd.clear();
}

void loop() {
  buttonState = digitalRead(6);
  if (buttonState == HIGH) {
    lcd.setCursor(0, 0);
    lcd.print(" ");
    lcd.setCursor(0, 1); 
    lcd.write(byte(9));
  } else {
    lcd.setCursor(0, 1);
    lcd.print(" ");
    lcd.setCursor(0, 0); 
    lcd.write(byte(9));
  }

  buttonState2 = digitalRead(8);
  if (buttonState2 == HIGH) {
    lcd.setCursor(15, 0);
    lcd.print(" ");
    lcd.setCursor(15, 1); 
    lcd.write(byte(10));
  } else {
    lcd.setCursor(15, 1); 
    lcd.print(" ");
    lcd.setCursor(15, 0); 
    lcd.write(byte(10));
  }

  for (int j = 2; j <= 15; j++) {
    lcd.setCursor(j - 1, 0);
    lcd.print(" ");
    lcd.setCursor(j, 0);
    lcd.write(byte(7));
    delay(300);
  }
}