C++ code:

void loop()
{
	display.clear();
	char score[5];
	itoa(paddle.score, score, 10);
	display.drawString(0, 0, score);


	//update position
	if (digitalRead(14))
		paddle.x--;
	if (digitalRead(12))
		paddle.x++;
	if (paddle.x == 0)
		paddle.x = MAT_WIDTH;
	
	paddle.x = ball.x;


	//Check collisions
	uint8_t row = ball.y / 2;
	if (row >= EMPTY_ROWS)
		row -= EMPTY_ROWS;
	else paddle.width = 8;

	if (row < ROWS) {
		uint8_t brick = ball.x / 8;
		if (bricks[row] & (1 << brick)) {
			ball.dy *= -1;
			bricks[row] = bricks[row] & (~(1 << brick));
			
			switch (row) {
			case 0: case 1:
				paddle.score += 7;
				break;
			case 2: case 3:
				paddle.score += 5;
				break;
			case 4: case 5:
				paddle.score += 3;
				break;
			case 6: case 7:
				paddle.score++;
				break;
			}
			if (!(bricks[0] | bricks[1] | bricks[2]))
				game_over(score);
		}
	}
	

	ball.x += ball.dx;
	if (ball.x > MAT_WIDTH || ball.x == 0)
		ball.dx *= -1;

	ball.y += ball.dy;
	if (ball.y == 0 || (ball.y == MAT_HEIGHT-1  && abs(ball.x - paddle.x) < (paddle.width/2) ))
		ball.dy *= -1;

	if (ball.y == MAT_HEIGHT) {
		ball.x = MAT_WIDTH / 2;
		ball.y = MAT_HEIGHT / 2;
		if (!paddle.lives--)
			game_over(score);
		
	}


	//draw bricks
	for (int row = 0; row < ROWS; row++) {
		for (int brick = 0; brick < 16; brick++)
			if (bricks[row] & 1<<brick)
				display.drawHorizontalLine((MAT_WIDTH / 16) * brick, (row+EMPTY_ROWS)*2, MAT_WIDTH / 16-1);
	}
	//draw ball
	display.drawRect(ball.x-1,  ball.y-1, 2, 2);

	//draw paddle
	display.drawHorizontalLine(paddle.x - (MAT_WIDTH/32), MAT_HEIGHT - 1, MAT_WIDTH / 16);

	display.display();
	delay(40);
}