builder

length = {...}
slot = 1
place = 1
turtle.select(1)

function line()
while turtle.getItemCount(tonumber(length[1])) > 0 do
 for i = 1, 64 do
  turtle.select(slot)
  turtle.forward()
  turtle.placeDown()
 end
 slot = slot +1
end
end

function up()
while turtle.getItemCount(tonumber(length[1])) > 0 do
 for i = 1, 64 do
  turtle.select(slot)
  turtle.up()
  turtle.forward()
  turtle.placeDown()
 end
 slot = slot +1
end
end

function down()
while turtle.getItemCount(tonumber(length[1])) > 0 do
 for i = 1, 64 do
  turtle.select(slot)
  turtle.forward()
  turtle.down()
  turtle.placeDown()
 end
 slot = slot +1
end
end

function row()
 turtle.select(slot)
 for i = 1, tonumber(length[1]) do
 getMats = turtle.getItemCount(slot)
  if  getMats == 0 then
   slot = slot +1
   turtle.select(slot)
  end
  turtle.placeDown()
  place = place +1
  turtle.forward()
 end
end

function rowBack()
turtle.turnRight()
turtle.turnRight()
 for i = 1, tonumber(length[1]) do
  turtle.forward()
 end
end

function start()
 turtle.forward()
 turtle.turnLeft()
 for i = 1, (tonumber(length[1])-1) / 2 do
  turtle.forward()
 end
 turtle.turnRight()
end

function platform()
 slot = 1
 start()
 for i = 1, tonumber(length[1]) do
  row()
  rowBack()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
 end
end







slot = 1
if length[2] == "up" then up()
elseif length[2] == "down" then down()
elseif length[2] == "platform" then platform()
else line()
end