View difference between Paste ID: vkkAzdL0 and qKxfmwb0

 tArgs = {...}
 
 local currentLevel = 0
 local build = false
 local currentSlot = 1
-local length = 1
+local size = 1
-local width = 1
+
 function isEmpty(slot)
   if turtle.getItemCount(slot) > 0 then
-  if turtle.getCount(slot) > 0 then
+
   else
     return true
   end
 end
 
 function nextSlot()
   currentSlot = currentSlot + 1
   turtle.select(currentSlot)
 end
 
 function buildColumn()
   while turtle.detectDown() == false do
-	while turtle.detectDown() == false do
+	turtle.down()
-		turtle.down()
+	currentLevel = currentLevel + 1
-		currentLevel = currentLevel + 1
+
 
   if turtle.detectDown() == true then
-	  if turtle.detectDown() == true then
+	for i = 1, currentLevel do
-		for i = 1, currentLevel do
+	  if isEmpty(currentSlot) == false then
-		  if isEmpty(currentSlot) == false
+		turtle.up()
-			turtle.up()
+		turtle.placeDown()
-			turtle.placeDown()
+	  else
-		  else
+		nextSlot()
-			nextSlot()
+		i = i - 1
-			i = i - 1
+
-		  end
+
-		end
+
   currentLevel = 0
 end
 
 function buildTwoByTwo()
    buildColumn()
    turtle.forward()
    buildColumn()
-  if tArgs[2] == nil then
+   turtle.turnLeft()
    turtle.forward()
    buildColumn()
    turtle.turnLeft()
-    print("column length width")
+   turtle.forward()
-    build = false
+   buildColumn()
    turtle.turnLeft()
-    print("Building a "..tArgs[1].."x"..tArgs[2].." column")
+   turtle.forward()
    print("DONE")
 end
 
 function buildThreeByThree()
   buildColumn()
   turtle.forward()
   buildColumn()
-  if length > 1 then
+  turtle.forward()
-    for i = 1, length do
+
-	  if width > 1 then
+  turtle.turnLeft()
-	    turtle.turnLeft()
+  turtle.forward()
-		for i = 1, width do
+  turtle.buildColumn()
-		  turtle.forward()
+  turtle.turnLeft()
-		  buildColumn()
+  turtle.forward()
-		  currentLevel = 0
+
-		  for i = 1, width do
+  turtle.forward()
-		    turtle.back()
+
-		  end
+  turtle.turnRight()
-		end
+  turtle.forward()
-		turtle.turnRight()
+
   turtle.turnRight()
-	  turtle.forward()
+  turtle.forward()
-	  buildColumn()
+
-	  currentLevel = 0
+  turtle.forward()
   buildColumn()
-	for i = 1, length do
+  turtle.turnRight()
-	  turtle.back()
+  turtle.turnRight()
   turtle.forward()
   turtle.forward()
   turtle.forward()
 end
 
 function buildFourByFour()
   --
 end
 
 if tArgs[1] == nil then
   print("Building a 1 x 1 column")
   build = true
 else
   if tArgs[2] == "2" or tArgs[2] == "3" or tArgs[2] == "4" then
     build = true
 	size = tonumber(tArgs[1])
   else
     print("Invalid Usage.")
     print("Usage:")
     print("column")
     print("column size")
 	print(" ")
 	print("Valid column sizes: (2) = 2 x 2, (3) = 3 x 3, (4) = 4 x 4")
   end
 end
 
 if build == true then
   if size == 1 then
     buildColumn()
 	print("DONE")
   elseif size == 2 then
     buildTwoByTwo()
   elseif size == 3 then
     buildThreeByThree()
   elseif size == 4 then
     buildFourByFour()
   end
 end