first house

function line(dlina)
    for x = 1 , dlina do
        if turtle.getItemCount() == 0 then
            turtle.select(2)
        end
        turtle.turnRight()
        turtle.placeDown()
        turtle.turnLeft()
        turtle.forward()
    end
end

function square(dlina)
    for b = 1, 4 do
        line(dlina)
        turtle.turnRight()
    end
end

function cube(length,height)
    for s = 1 , height do
        square(length)
        turtle.up()
    end
end

function pyramid(size)
    squareSize = size
    squareNum = math.ceil(size / 2)
    for y = 1, squareNum do
        square(squareSize)
        turtle.forward()
        turtle.turnRight()
        turtle.up()
        turtle.forward()
        turtle.turnLeft()
        squareSize = squareSize - 2
    end
end

function roof(size)
    turtle.select()
    pyramid(size)