Reactor Builder

size = 49

caseslot = 1
controlslot = 9
fuelslot = 15
curslot = "case"

blocksneeded = size * size * size + (size-2)*(size-2)*(size-2)

print(blocksneeded.." reactor case blocks are required to complete a size "..size.." reactor. Please ensure there is enough!")

starttime = os.clock()

size = size - 1 --This is just needed.

function place2(side)
    gotstuff = false
    while gotstuff == false do
        if curslot == "case" then
            turtle.select(caseslot)
        elseif curslot == "control" then
            turtle.select(controlslot)
        else
            print("NO SUCH ITEM: "..curslot)
        end
        if turtle.getItemCount(turtle.getSelectedSlot()) == 0 then
            if curslot == "case" then
                caseslot = caseslot + 1
            elseif curslot == "control" then
                controlslot = controlslot + 1
            end
        else
            gotstuff = true
        end
        if caseslot == 5 then
            caseslot = 1
        end
        if controlslot == 10 then
            controlslot = 5
        end
    end
    if side == "f" then
        turtle.place()
    elseif side == "u" then
        turtle.placeUp()
    else
        turtle.placeDown()
    end
end
function forward()
    if turtle.getFuelLevel() == 0 then
        curslot2 = turtle.getSelectedSlot()
        turtle.select(15)
        turtle.refuel()
        turtle.select(curslot2)
    end
    while not turtle.forward() do
        turtle.dig()
    end
end
function placeUp(height)
    iii = 0
    while iii<height do
        place2()
        turtle.up()
        iii = iii + 1
    end
end
print("Doing floor 1")
i = 0
ii = 0
while ii < size do
    turtle.turnRight()
    i = 0
    while i < size do
        print("Building floor with "..turtle.getFuelLevel().."/"..turtle.getFuelLimit().." fuel left")
        place2()
        forward()
        i = i + 1
    end
    place2()
    i = 0
    turtle.turnRight()
    turtle.turnRight()
    while i < size do
        forward()
        i = i + 1
    end
    turtle.turnRight()
    forward()
    ii = ii + 1
end
turtle.back()
turtle.turnRight()
print("Doing wall 1")
iv = 0
while iv<size do
    placeUp(size)
    turtle.forward()
    v = 0
    while v<size do
        turtle.down()
        v = v + 1
    end
    iv = iv + 1
end
turtle.turnRight()
print("Doing wall 2")
iv = 0
while iv<size do
    placeUp(size)
    turtle.forward()
    v = 0
    while v<size do
        turtle.down()
        v = v + 1
    end
    iv = iv + 1
end
turtle.turnRight()
print("Doing wall 3")
iv = 0
while iv<size do
    placeUp(size)
    turtle.forward()
    v = 0
    while v<size do
        turtle.down()
        v = v + 1
    end
    iv = iv + 1
end
turtle.turnRight()
print("Doing wall 4")
iv = 0
while iv<size do
    placeUp(size)
    turtle.forward()
    v = 0
    while v<size do
        turtle.down()
        v = v + 1
    end
    iv = iv + 1
end
turtle.turnRight()
turtle.up()
print("Doing floor 2")
i = 0
ii = 0
controlrod = true
while ii <= size do
    turtle.turnRight()
    i = 0
    while i < size do
        print("Building floor with "..turtle.getFuelLevel().."/"..turtle.getFuelLimit().." fuel left")
        print("Completed: "..i.." and "..ii.." with cr toggle on: "..controlrod)
        if i ~= 0 and i ~= size-1 and ii ~= 0 and ii ~= size-1 then
            if controlrod then
                curslot = "control"
                controlrod = not controlrod
            else
                curslot = "case"
                controlrod = not controlrod
            end
        else
            curslot = "case"
        end
        place2()
        forward()
        i = i + 1
    end
    place2()
    i = 0
    turtle.turnRight()
    turtle.turnRight()
    while i < size do
        forward()
        i = i + 1
    end
    turtle.turnRight()
    forward()
    ii = ii + 1
end

print("A size "..size.." reactor was completed in "..(os.clock()-starttime).." seconds")