double

os.loadAPI("libstruct")
b=libstruct
a=aware
args = {...}

if #args < 1 then
    error("Arguments: <name>")
end

t=b.load(args[1]..".3d")
height=t["height"]
width=t["width"]
depth=t["depth"]

height=((height+1)*2)-1
width=((width+1)*2)-1
depth=((depth+1)*2)-1

endblock=t["endblock"]
parwidth=(width %2 == 0) -- width er partall
moveleft=true
a.setposition("start")

function refill(r)
    if r == nil  then
        print("refill got r == nil")
        return
    end
    if r == 0  then return end
    if turtle.getItemCount(r) > 5 then return end
    if not (endblock==16) then
            turtle.select(r)
         print("Looking for " .. r .. " from " .. endblock+1 .. " to 16")
            for i=endblock+1,16 do
                    if turtle.compareTo(i) then
                         print("Found in " .. i)
                            turtle.select(i)
                            turtle.transferTo(r)
                            free=turtle.getItemSpace(r)
                    end
                    turtle.select(r)
                    if free == 0 then
                        print("free == 0 ")
                            break
                    end
            end
    end
        if turtle.getItemCount(r) < 2 then
        print("--Sleeping while waiting for refill for slot " .. r)
        while (turtle.getItemCount(r) < 2) do
                os.sleep(15)
            end
    end
end

function line()
        print("Building line")
        for d=0,depth do
                pos = a.getposition("current")
                print("Pos: h" .. pos[3]*-1 .. "-w" .. pos[1] .. "-d" .. pos[2])
        block = t[math.floor((pos[3]*-1)/2)][math.floor(pos[1]/2)][math.floor(pos[2]/2)]
        refill(block)
        b.place(block)
                if(d<depth) then
                        a.df()
                end
        end
end


function turn()
        if(moveleft) then
                print("Moving left")
                a.l()
                a.df()
                a.l()
        else
                print("Moving right")
                a.r()
                a.df()
                a.r()
        end
        moveleft = not moveleft
end

function layer()
    print("Building layer")
    for w=0,width do
        line()
            if(w<width) then
                turn()
            end
    end
end

-- we build from the bottom up
for h=0,height-1 do
    a.dd()
end

for h=0,height do
    layer()
    if not (h == height) then
        a.du()
        b.t180()
        if parwidth then
            if h%2 == 0 then
                turnleft=false
            else
                turnleft=true
            end
        else
            turnleft=true
        end
    end
end

print("Finised, going home")
a.goto(a.getposition("start"))
b.awarecleanup()