Mod Farm Sky Factory 2 Builder

-- Sky Factory 2 build Farming mods 25 blocks away from you base
-- Requires:
-- Slot 1,15 Resources
-- Slot 16, Coal
-- this turtle builds form left to right
-- place turtle on block next to the platform that you wanna build
-- it's a 18x18 mob farm so You will need 19 stack of cobblestone to build it

local Moveto ="r"
local NextSlot
local lastslotValid=1
local ResourcesAmount=1
local width
local length
local function NextSelect()
    for i = lastslotValid, 15 do
                turtle.select(i)
                        itemCount = turtle.getItemCount(i)
                        if itemCount ~= 0 then
                                NextSlot=i
                                lastslotValid=i
                                ResourcesAmount=1
                                break
                        else
                                lastslotValid=i
                                NextSlot=i
                                ResourcesAmount=0
                        end
                 end
end
function MoveBack()
NextSelect()
turtle.select(NextSlot)
turtle.back()
turtle.place()
end
function MoveIt()
NextSelect()
turtle.select(NextSlot)
turtle.turnLeft()
turtle.back()
turtle.down()
end
function MoveItleft()
NextSelect()
turtle.select(NextSlot)
turtle.turnRight()
turtle.back()
turtle.place()
turtle.turnRight()
end
function MoveItRight()
NextSelect()
turtle.select(NextSlot)
turtle.turnLeft()
turtle.back()
turtle.place()
turtle.turnLeft()
end
local function GetResources()
local OneSlotFull
        for i = 1, 15 do
                        turtle.select(i)
                        itemCount = turtle.getItemCount(i)
                        if itemCount ~= 0 then
                                OneSlotFull=true
                        end

        end
                if OneSlotFull then
                return true
                else
                print("No Resources feed Me ")
                return false
                end
end
local function TurtleReFuel()
        for i = 1, 16 do
         turtle.select(i)
        if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
        turtle.refuel()
                end
        end
                turtle.select(1)
                if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
                print("your turtle needs fuel to move put some into last slot")
                return false
                else
                return true
                end
end
function addmoreresources()
while ResourcesAmount==0 do
print("add more resources and Press Enter to continue!")
local event, key = os.pullEvent( "key" )

        if key == keys.enter then
        print( "Let's Go !")
        lastslotValid=1
        NextSelect()
        turtle.place()
        end
        end
while turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 do
print("your turtle needs fuel to move put some into last slot")
turtle.select(16)
turtle.refuel()
turtle.select(1)
turtle.place()
end
end

function BuildSquareTunnel(D1,D2)
for i=1,D1 do
        for j=1,4 do
                for i=1,D2 do
                        MoveBack()
                        addmoreresources()
                end
                turtle.turnRight()
        end
        MoveBack()
        turtle.turnRight()
        turtle.up()
        turtle.forward()
        turtle.turnLeft()
        turtle.forward()
        end

end
local SurfacesDims = {{25,3},{12,11},{18,18}}
function GotoThecenter()

                        turtle.up()
                        turtle.turnLeft()
                for i=1,8 do
                turtle.forward()
                end
                turtle.turnLeft()
                for i=1,4 do
                turtle.forward()
                end
end

function BuildNextPlatform()
NextSelect()
turtle.select(NextSlot)
turtle.up()
turtle.turnLeft()
for i = 1, 7 do
turtle.forward()
end
Moveto ="r"
MoveIt()
end

function buildPlatfurms(a,y)
 local Dim1=SurfacesDims[a][1]
 local Dim2=SurfacesDims[a][2]
for j=1,Dim2 do
                for i=1,Dim1-1 do
                        if  y==1 and (i==9 or i==10) and (j==9 or j==10)  then
                                        turtle.back()
                        else
                                        MoveBack()
                                        addmoreresources()
                        end
            end
                                        if Moveto =="r"  then
                                        MoveItleft()
                                        Moveto = "l"
                                        else
                                        MoveItRight()
                                        Moveto = "r"
                                        end
end
end
if  GetResources() and TurtleReFuel() then

        MoveIt()
        buildPlatfurms(1)
        BuildNextPlatform()
        buildPlatfurms(2)
        GotoThecenter()
        BuildSquareTunnel(18,3)
        turtle.turnRight()
        for i=1,2 do
        if i==2 then
        turtle.turnLeft()
        end
        for i=1,7 do
                turtle.forward()
        end
        end
        Moveto = "r"
        buildPlatfurms(3,1)
        turtle.up()
        turtle.turnRight()
        for j=1,18 do
        turtle.forward()
        end
        turtle.turnLeft()
        BuildSquareTunnel(3,17)
        buildPlatfurms(3)

end