print

local args = {...}

if #args ~= 1 then
    print("Usage: print <file>")
    return
end

local bpFile = fs.open(shell.resolve(args[1]),"r")

if not bpFile then
    print("Error: invalid file")
    return
end

local blueprint = textutils.unserialize(bpFile.readAll())

print("Please put materials in the following slots:")
for i=1,#blueprint.slots do
    print(i..". "..blueprint.slots[i].name..": "..blueprint.slots[i].count)
end
print("Press enter to start...")
read()

local i = 1
local right = true
for h=1,blueprint.h do
    turtle.up()
    for x=1,blueprint.x do
        for y=1,blueprint.y do
            if(blueprint.tcode[i] > 0) then
                turtle.select(blueprint.tcode[i])
                turtle.placeDown()
            end
            if y < blueprint.y then
                turtle.forward()
            end
            i = i + 1
        end
        if x < blueprint.x then
            if right then
                turtle.turnRight()
                turtle.forward()
                turtle.turnRight()
                right = false
            else
                turtle.turnLeft()
                turtle.forward()
                turtle.turnLeft()
                right = true
            end
        end
    end
    turtle.turnRight()
    turtle.turnRight()
end