Ender2

function printUsage()
        print( "Usage:" )
        print( "'Ender2 1' for first time use." )
        print( "'Ender2 2' for 2nd time etc..." )
        print( "'Ender2 #(f.e. 3) top' for last layer" )
end

tArgs = { ... }
if #tArgs > 2 or #tArgs < 1 then
    printUsage()
    return
elseif tonumber(tArgs[1]) == nil then
    printUsage()
    return
elseif #tArgs == 2 and tostring(tArgs[2]) ~= "top" then
    printUsage()
    return
end


slot = 1
progress = tonumber(tArgs[1])

height = 32 + 16 * progress

print("'Turtle should (still) be in the bottom left corner on the ground'")
print("'4 layers at a time:'")
print("'slot 1-2 = pistons 1stack+40'")
print("'slot 3 = slabs 1stack'")
print("'slot 4-5 = string 1stack+40'")
print("'slot 6 = tripwire hooks 16'")
print("'slot 7-8 = redstone 1stack+56'")
print("'slot 9-13- = blocks 4stacks+16'")
print("Type anything to proceed")
io.read()


if tArgs[2] == "top" then
    print("'top detected!'")
    print("'Add 26 slabs to slot 16!'")
else
    print("'Remember: add top for the last layer'")
    print("'For example: Ender2 5 top'")
end
print("'turtle backing up, made room?'")
io.read()

function place()
        inventory()
        turtle.place()
end

function placeUp()
        inventory()
        turtle.placeUp()
end

function placeDown()
        inventory()
        turtle.placeDown()
end

function inventory()
        while turtle.getItemCount(slot) == 0 do
                slot = slot + 1
        end
        turtle.select(slot)
end

                            --program begins here
turtle.back()
for x=1, height do
    turtle.up()
end
turtle.forward()

function piston()
    slot = 1
    place()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
end

function redstone()
    slot = 9
    placeDown()
    turtle.back()
    slot = 7
    place()
end

function hook()
    slot = 9
    place()
    turtle.up()
    slot = 3
    place()
    turtle.down()
    turtle.back()
    slot = 6
    place()
end

function layer()            --layer starts here
    slot = 9
    placeUp()               --block
    for x=1, 4 do
        turtle.forward()
        slot = 3
        placeUp()           --slabs
    end
    turtle.forward()
    slot = 9
    placeUp()               --block
    turtle.back()
    turtle.turnRight()
    for x=1, 14 do          --move other side
        turtle.forward()
    end
    turtle.turnRight()
    turtle.back()
    slot = 9
    placeUp()               --block
    turtle.forward()
    for x=1, 4 do
        slot = 3
        placeUp()           --slabs
        turtle.forward()
    end
    slot = 9
    placeUp()               --block
    turtle.forward()
    turtle.turnRight()
    for x=1, 13 do
        turtle.forward()    --move to start pistons
    end
    turtle.turnRight()
    turtle.up()
    for x=1, 13 do
        piston()            --pistons
    end
    turtle.up()
    turtle.up()
    turtle.forward()
    slot = 7
    placeDown()             --place 1 redstone for the hook
    turtle.turnRight()
    turtle.back()
    for x=1, 13 do
        redstone()          --place blocks and redstone
    end
    slot = 7
    placeDown()             --place 1 redstone for the hook
    turtle.turnRight()
    for x=1, 5 do
        turtle.back()       --move to other side
    end
    slot = 7
    placeDown()             --place 1 redstone for the hook
    turtle.turnRight()
    turtle.back()
    for x=1, 13 do
        redstone()          --place blocks and redstone
    end
    slot = 7
    placeDown()             --place 1 redstone for the hook
    turtle.turnLeft()
    turtle.back()
    turtle.down()
    turtle.down()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    for x=1, 13 do
        piston()            --pistons
    end
    turtle.up()
    turtle.up()
    turtle.up()
    turtle.forward()
    slot = 3
    placeDown()             --place slab1
    turtle.turnLeft()
    for x=1, 14 do
        turtle.forward()
    end
    turtle.turnRight()
    slot = 3
    placeDown()             --place slab2
    for x=1, 5 do
        turtle.forward()
    end
    turtle.turnRight()
    slot = 3
    placeDown()             --place slab3
    for x=1, 14 do
        turtle.forward()
    end
    turtle.turnRight()
    slot = 3
    placeDown()             --place slab4
    turtle.forward()
    turtle.turnLeft()
    turtle.down()
    turtle.down()
    hook()
    for x=1, 13 do
        turtle.back()
    end
    turtle.turnRight()
    turtle.turnRight()
    hook()
    turtle.turnLeft()
    for x=1, 3 do
        turtle.forward()
    end
    turtle.turnRight()
    turtle.forward()
    hook()
    for x=1, 13 do
        turtle.back()
    end
    turtle.turnRight()
    turtle.turnRight()
    hook()
    for x=1, 12 do
        turtle.back()
        slot = 4
        place()
    end
    turtle.turnRight()
    turtle.back()
    slot = 4
    place()
    for x=1, 3 do
        turtle.back()
    end
    turtle.turnRight()
    for x=1, 12 do
        turtle.back()
        slot = 4
        place()
    end
    turtle.turnRight()
    turtle.back()
    slot = 4
    place()
    turtle.up()
    turtle.up()
    for x=1, 3 do
        turtle.forward()
    end
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
    turtle.forward()
end

function spawn()
    for x=1, 4 do
        turtle.forward()
        slot = 9
        placeDown()
    end
    turtle.turnRight()
    for x=1, 14 do
        turtle.forward()
        slot = 9
        placeDown()
    end
    turtle.turnRight()
    for x=1, 3 do
        turtle.forward()
        slot = 9
        placeDown()
    end
    turtle.turnRight()
    for x=1, 13 do
        turtle.forward()
        slot = 9
        placeDown()
    end
    turtle.forward()
    turtle.turnRight()
    turtle.back()
end

for x=1, 4 do
    spawn()
    layer()
end

if tostring(tArgs[2]) == "top" then
    turtle.turnRight()
    turtle.up()
    for x=1, 13 do
        turtle.forward()
        slot = 16
        placeDown()
    end
    turtle.turnLeft()
    for x=1, 5 do
        turtle.forward()
    end
    turtle.turnLeft()
    for x=1, 13 do
        slot = 16
        placeDown()
        turtle.forward()
    end
    turtle.turnLeft()
    for x=1, 5 do
        turtle.forward()
    end
    turtle.turnRight()
    turtle.turnRight()
    turtle.down()
end

turtle.back()
height = height + 16
for x=1, height do
    turtle.down()
end
turtle.forward()

print("'Ender2 is done!'")
if tostring(tArgs[2]) == "top" then
    print("Finished building, enjoy!")
else
    print("'Ready to go again!'")
end