#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int ballX = SCREEN_WIDTH / 2;
int ballY = SCREEN_HEIGHT / 2;
int ballSpeedX = 1;
int ballSpeedY = 1;
int playerY = SCREEN_HEIGHT / 2 - 10;
int playerSpeed = 2;
int score = 0;

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.setTextColor(SSD1306_WHITE);
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.println("Football Game");
  display.display();
  delay(2000);
}

void loop() {
  display.clearDisplay();

  // Move the player up and down
  if (digitalRead(2) == HIGH && playerY > 0) {
    playerY -= playerSpeed;
  }
  if (digitalRead(3) == HIGH && playerY < SCREEN_HEIGHT - 20) {
    playerY += playerSpeed;
  }

  // Move the ball
  ballX += ballSpeedX;
  ballY += ballSpeedY;

  // Check ball collision with top and bottom walls
  if (ballY <= 0 || ballY >= SCREEN_HEIGHT - 4) {
    ballSpeedY = -ballSpeedY;
  }

  // Check ball collision with player
  if (ballX <= 5 && ballY >= playerY && ballY <= playerY + 20) {
    ballSpeedX = -ballSpeedX;
    score++;
  }

  // Check ball out of bounds
  if (ballX >= SCREEN_WIDTH) {
    ballX = SCREEN_WIDTH / 2;
    ballY = SCREEN_HEIGHT / 2;
    ballSpeedX = -ballSpeedX;
    score = 0;
  }

  // Draw player
  display.fillRect(0, playerY, 5, 20, SSD1306_WHITE);

  // Draw ball
  display.fillCircle(ballX, ballY, 4, SSD1306_WHITE);

  // Display score
  display.setCursor(SCREEN_WIDTH - 30, 0);
  display.print("Score: ");
  display.println(score);

  display.display();
  delay(10);
}