#include<LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

byte customChar[8] = {
	0b11111,
	0b10100,
	0b10010,
	0b10001,
	0b10001,
	0b10010,
	0b10100,
	0b11111
};

const int BTN = 7; 

int opoPos_x = 15;
int opoPos_y = 0;

int carPos_x = 0;
int carPos_y = 0;

int score = 0;
int speed = 100;

void setup() {
  lcd.init();
  lcd.backlight();
  randomSeed(analogRead(0));
  lcd.createChar(0, customChar);
}

void loop() {

  opoPos_y = random(0,2);
  do{
  lcd.clear();
  lcd.setCursor(carPos_x, carPos_y);
  lcd.write((byte)0);
  lcd.setCursor(opoPos_x, opoPos_y);
  lcd.print("C");
  if(digitalRead(BTN) == HIGH){
    carPos_y = 1;
  }
  else if(digitalRead(BTN) == LOW){
    carPos_y = 0;
  }
  if((carPos_x==opoPos_x)&&(carPos_y==opoPos_y)){
    lcd.clear();
    lcd.setCursor(2,0);
    lcd.print("GAME OVER");
    lcd.setCursor(2,1);
    lcd.print("SCORE:");
    lcd.setCursor(10,1);
    lcd.print(score);
    delay(5000);
    score = 0;
    speed = 100;
  }
  delay(speed);
  opoPos_x--;
  }while(opoPos_x >= 0);
  opoPos_x = 15;
  score+=1;
  if(speed>20){
    speed-=3;
  }
  
}