first house

q = 1
function line(dlina)
    turtle.select(q)
    for x = 1 , dlina do
        if turtle.getItemCount() == 0 then
            q = q + 1
        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(5)
    pyramid(size)
    half = math.ceil( size / 2 )
    for x = 1, half do
        turtle.back()
    end
    turtle.turnLeft()
    for x = 1, half do
        turtle.forward()
    end
    turtle.turnRight()
    for x = 1, half - 1 do
        turtle.down()
    end
    turtle.select(6)
    pyramid(size)
end
length = math.random(3, 7)
roof(length)
function house()
    cube()
    pyramid(size)
    roof(size)
end