2D/3D printer

--[[ Made by columna1 Please dont claim as your own ]]--
plane = 0
line = {}
x = 0
selecteditem = 1
mainmenu = true
menu2d = false
menu3d = false
col = {
w = 1,
o = 2,
m = 3,
b = 4,
y = 5,
l = 6,
p = 7,
G = 8,
g = 9,
c = 10,
P = 11,
B = 12,
n = 13,
e = 14,
r = 15,
d = 16,
s = 20
}
--functions
function forward()
forw = true
while forw do
  if turtle.forward() then
   forw = false
  else
   turtle.dig()
   turtle.attack()
  end
end
end
function placeDown()
if turtle.getItemCount(selected) > 1 then
  turtle.placeDown()
else
  nom = true
  print("Enter material")
  while nom do
   sleep(1)
   if turtle.getItemCount(selected) > 1 then
	nom = false
	print("continuing")
	turtle.placeDown()
   end
  end
end
end
function place()
if turtle.getItemCount(selected) > 1 then
  turtle.place()
else
  nom = true
  print("Enter material")
  while nom do
   sleep(1)
   if turtle.getItemCount(selected) > 1 then
	nom = false
	print("continuing")
	turtle.place()
   end
  end
end
end
function printer()
sleep(0.1)
up = job.readLine()
for j = 1,tonumber(up) do
  curline = job.readLine()
  if x == 1 then
   curline = curline:reverse()
  end
  for i = 1,#curline do
   line[i] = curline:sub(i,i)
  end
  for i = 1,#line do
   if col[line[i]] == 20 then
	--no selecting
   else
	turtle.select(col[line[i]])
	selected = col[line[i]]
   end
   if plane == 0 then
	if col[line[i]] == 20 then
	 --no placing
	else
	 placeDown()
	end
	forward()
   else
	if x == 0 then
	 if col[line[i]] == 20 then
	  --no placing
	 else
	  place()
	 end
	 turtle.turnRight()
	 forward()
	 turtle.turnLeft()
	elseif x == 1 then
	 if col[line[i]] == 20 then
	  --no placing
	 else
	  place()
	 end
	 turtle.turnLeft()
	 forward()
	 turtle.turnRight()
	end
   end
  end
  if plane == 0 then
   if x == 0 then
	turtle.turnRight()
	forward()
	turtle.turnRight()
	forward()
	x = 1
   elseif x == 1 then
	turtle.turnLeft()
	forward()
	turtle.turnLeft()
	forward()
	x = 0
   end
  else
   if x == 0 then
	turtle.down()
	turtle.turnLeft()
	forward()
	turtle.turnRight()
	x = 1
   elseif x == 1 then
	turtle.down()
	turtle.turnRight()
	forward()
	turtle.turnLeft()
	x = 0
   end
  end
end
end
function exit()
main = false
term.clear()
term.setCursorPos(1,1)
print("Thanks for using Columna1's printer")
end
function face()
plane = 1
end
function d3()
  sleep(0.1)
  selecteditem = 1
  menu3d = true
  while menu3d do
	term.clear()
	term.setCursorPos(1,1)
	printmenu(menu3)
	event,key = os.pullEvent("key")
	onkeypress(key,menu3)
  end
end
function d2()
  selecteditem = 1
  menu2d = true
  while menu2d do
	term.clear()
	term.setCursorPos(1,1)
	printmenu(menu2)
	event,key = os.pullEvent("key")
	onkeypress(key,menu2)
  end
end
function exit3d()
  selecteditem = 1
  menu3d = false
  selecteditem = 1
end
function exit2d()
  selecteditem = 1
  menu2d = false
  selecteditem = 1
end
function print3d()
	sleep(0.1)
x = 0
if tip then
  files = job.readLine()
  job.close()
  for k = 1,tonumber(files) do
   job = fs.open(timp.."_"..k,"r")
   printer()
   if #curline %2 == 0 then
	turtle.turnLeft()
	for h = 1,#curline do
	 forward()
	end
	turtle.turnRight()
	turtle.up()
   else
	turtle.turnRight()
	for h = 1,#curline do
	 forward()
	 end
	turtle.turnLeft()
	for h = 1,#curline-1 do
	 forward()
	end
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.up()
   end
   job.close()
   x = 0
   tip = nil
  end
else
  print("No file Entered")
  sleep(1)
end
end
function print2d()
x = 0
if tipe then
  printer()
  tipe = nil
else
  print("No file entered")
  sleep(1)
end
end
function enter3d()
print("Enter file prefix")
timp = read()
if fs.exists(timp) then
  job = fs.open(timp,"r")
  tip = job.readLine()
  if tip == "3d" then
   -- over with
  else
   print("Not a 3d file")
   sleep(1)
  end
else
  print("invalid file")
  tip = nil
  sleep(1)
end
end
function enter2d()
print("Enter filename")
local temp = read()
if fs.exists(temp) then
  job = fs.open(temp,"r")
  tipe = job.readLine()
  if tipe == "2d" then
	--another comment to do nothing
  else
   print("Not a 2d file")
   sleep(1)
  end
else
  print("invalid file")
  tipe = nil
  sleep(1)
end
end
menu = {
[1] = {text = "2D",handler = d2},
[2] = {text = "3D",handler = d3},
[3] = {text = "Exit",handler = exit}
}
menu2 = {
[1] = {text = "Enter filename",handler = enter2d},
[2] = {text = "Print",handler = print2d},
[3] = {text = "Plane y",handler = face},
[4] = {text = "Main menu",handler = exit2d}
}
menu3 = {
[1] = {text = "Enter filename",handler = enter3d},
[2] = {text = "Print",handler = print3d},
[3] = {text = "Main menu",handler = exit3d}
}
--printmenu
function printmenu(menu)
  for i = 1,#menu do
	if i == selecteditem then
	  print("[[ "..menu[i].text.." ]]")
	else
	  print("   "..menu[i].text.."   ")
	end
  end
end
--handlers
function onkeypress(key,menu)
  if key == keys.enter then
	onitemselected(menu)
  elseif key == keys.up then
	if selecteditem > 1 then
	  selecteditem = selecteditem - 1
	end
  elseif key == keys.down then
	if selecteditem < #menu then
	  selecteditem = selecteditem + 1
	end
  end
end
function onitemselected(menu)
  menu[selecteditem].handler()
end
--main
function main()
  while main do
	term.clear()
	term.setCursorPos(1,1)
	printmenu(menu)
	event,key = os.pullEvent()
	onkeypress(key,menu)
  end
end
main()