// iterate through both the rows and if ball collides with the brick in first or secondrow, set brick to null, the null bricks will not be drawn
public void BrickCollisions()
{
for (int i = 0; i < bricksPerRow; i++)
{
if (firstRow[i] != null)
{
if (ball.CollidesWith(firstRow[i]))
{
ball.YSpeed *= -1;
firstRow[i] = null;
break;
}
}
if (secondRow[i] != null)
{
if (ball.CollidesWith(secondRow[i]))
{
ball.YSpeed *= -1;
secondRow[i] = null;
break;
}
}
}
}