View difference between Paste ID: HJZmQfbM and bRpbc2BU

 --CurrentLuaProgram.lua
 print("Hello World")
 --TurtleTower
 
 --Check arguments for correct formatting
 local args = { ... }
 if #args ~= 1 then      --Check if it's not exactly 3 arguments.
     shell.run("clear")
     print("Invalid number of arguments")
     print("turtletower [height]")
     do return end
 end
 for i = 1, 1 do            --Step through each argument and make sure it is a number greater than 1.
     if tonumber(args[i]) < 5 or tonumber(args[i]) > 9 then
         shell.run("clear")
         print("Invalid arguments")
         print("All measurements must be numbers greater than 5 and less than 9")
         do return end
     end
 end
 --------------------------------------------------
 
 --commandline arguments [height]
 length = tonumber(args[1])  --length of square
 
 --The position of each of the blocks of interest
 -- these blocks are used for different parts of the tower.
 wallslot = 1
 floorslot = 4
 roofslot = 5
 torchslot = 6
 ladderslot = 7
 glassslot = 8
 roofslot = 9
 
 function checkSlots()
     if turtle.getItemCount(wallslot) < 1 then
         slotnum = wallslot + 1
         turtle.select(wallslot)
     end
     return
 end
 --------------------------------------------------
 
 --Finish location (at H)
 -- [ ][w][w][w][ ]
 -- [w][ ][ ][ ][w]
 -- [d][ ][ ][ ][w]
 -- [H][ ][ ][ ][w]
 -- [ ][w][w][w][ ]
 -- This is where the bot should be after each function
 -- (top down view) facing up
 
 
 
 -- Create the walls of the tower.
 function walls (height)
 	for i = 1, height do
 		if not turtle.detectUp() then
 			turtle.up()
 		end
 		for j = 1, 4 do
 			for k = 1, 3 do
 				if not turtle.detectDown() then
 					checkSlots()
 					turtle.placeDown()
 				end
 				turtle.forward()
 			end
 			turtle.turnRight()
 			turtle.forward()
 		end
 	end
 end
 
 -- Door and windows.
 function openings(height)
 	--get back to floor level
 	turtle.forward()
 	turtle.turnLeft()
 	turtle.back()
 	for i = 1, length do
 		turtle.down()
 	end
 
 	currentHeight = 1
 
 	turtle.dig()
 	turtle.up()
 	turtle.dig()
 	currentHeight = currentHeight + 1
 
 	while currentHeight < height - 3 do
         for i = 1, 4 do
             if i == 4 and currentHeight == 2 then
-                continue
+
             else
             turtle.back()
             turtle.turnRight()
             turtle.forward()
             turtle.dig()
             turtle.up()
             turtle.dig()
             turtle.down()
             end
         end
         turtle.up()
         turtle.up()
         turtle.up()
         turtle.up()
         currentHeight = currentHeight + 4
     end
 end
 
 walls(length)
 openings(length)