Random random = new Random();
        for (int i = 0; i < 10; i++)
        {
            GenPos = new Vector2((800 + (Length * Stone.Width)), (500 - (i * Stone.Height)));


            int number = random.Next(1, 3);

            if (i == 9)
            {
                if (Length < 31)
                {
                    i = 0;
                    Length++;
                }

            }
            else if (number == 1)
            {
                spriteBatch.Draw(Stone, GenPos, Color.White);
            }
            else if (number > 1)
            {
                spriteBatch.Draw(Grass, GenPos, Color.White);
            }

        }

public Boolean StonePlayerCollision()
    {
        if (playerPosition.Y >= (StonePosition.Y + Stone.Height) && playerPosition.Y <= StonePosition.Y ))
        {
            return true;
        }
        else
        {
            return false;
        }

    }

spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend,
            SamplerState.LinearWrap, null, null, null, camera.ViewMatrix);