View difference between Paste ID: S3dVSyj0 and aEtJ0KYU

 local tArgs = {...}
 if #tArgs ~= 3 then
   print("Requires length, width, height")
   return
 end
 
 local x = tonumber(tArgs[1]) - 1
 local y = tonumber(tArgs[2])
 local z = tonumber(tArgs[3])
 
 local posX = 1
 local posY = 1
 local posZ = 1
 
 if x == nil or y == nil or z == nil then
   print("Invalid dimensions")
   return
 end
 
 if x < 0 or y < 0 or z < 0 then
   print("Invalid (negative) dimensions")
   return
 end
 
 local torch = 0
 local inventory_start = 2
 print("Use torches? (y/n)")
 local input = io.read()
 if(input == "y") then
   torch = 2
   inventory_start = 3
 else
   torch = 0
 end
 
 local roomSize = x * y * z
 print("Storing fuel for mining process...")
 turtle.select(1)
 while turtle.getFuelLevel() < roomSize do
   if not turtle.refuel(1) then
     print("Not enough fuel. Please insert more fuel.")
     return
   end
 end
 
 
 --[[Funcao que vai descarregar quando e atingido o ultimo slot]]--
 function goUnload(direction, inventory_start)
   if(posZ % 2 == 0) then
 	if direction then
 	  turtle.turnRight()
     else
 	  turtle.turnLeft()
     end
 	turtle.down()
   else
 	if direction then
 	  turtle.turnLeft()
     else
 	  turtle.turnRight()
     end
   end
   for m = 1, posY-1 do
     turtle.forward()
   end
   turtle.turnLeft()
   for m = 1, posX-1 do
     turtle.forward()
   end
   for m = 1, posZ-2 do
     turtle.down()
   end
   turtle.turnRight()
   for inventory = inventory_start, 16 do
     turtle.select(inventory)
     turtle.drop()
   end
   turtle.turnRight()
   for m = 1, posZ-2 do
     turtle.up()
   end
   for m = 1, posX-1 do
     turtle.forward()
   end
   turtle.turnRight()
   for m = 1, posY-1 do
     turtle.forward()
   end
   if(posZ % 2 == 0) then
 	if direction then
 	  turtle.turnRight()
     else
 	  turtle.turnLeft()
     end
   else
 	if direction then
 	  turtle.turnLeft()
     else
 	  turtle.turnRight()
     end
   end
   turtle.up()
   turtle.select(inventory_start)
 end
 
 
 
 local direction = true
 for i = 1, z do
   roomSize = x * y * (z-i)
   while turtle.getFuelLevel() < roomSize do
     turtle.select(1)
     turtle.refuel(1)
   end
 
   for j = 1, y do
     for k = 1, x do
       turtle.dig()
       turtle.forward()
-	  if direction then
+	  if (i % 2 ~= 0) then
-	    posX = posX + 1
+		if direction then
 	      posX = posX + 1
-		posX = posX - 1
+		else
 		  posX = posX - 1
 		end
 	  else
         if direction then
 	      posX = posX - 1
 		else
 		  posX = posX + 1
 		end
 	  end
       if(torch ~=0 and z > 1 and y > 1 and (j+3) % 6 == 0 and i == 1 and k < x and (k == 1 or k % 6 == 0)) then
 	    turtle.turnLeft()
 		turtle.select(2)
 		turtle.place()
 		turtle.turnRight()
 	  end
     end
     if j < y then
       if direction then
         turtle.turnRight()
         turtle.dig()
         turtle.forward()
 		posY = posY + 1
         turtle.turnRight()
         direction = false
       else
         turtle.turnLeft()
         turtle.dig()
         turtle.forward()
 		posY = posY + 1
         turtle.turnLeft()
         direction = true
       end
     end
 	if(turtle.getItemCount(16) > 0) then
 		goUnload(direction, inventory_start)
 	end
   end
   if i < z then
     turtle.digUp()
     turtle.up()
 	posZ = posZ + 1
     turtle.turnRight()
     turtle.turnRight()
   end
 end
 
 
 
 
 if z % 2 == 0 then
   for i = 1, z do
     turtle.down()
 	posZ = posZ - 1
   end
   turtle.turnRight()
   for inventory = inventory_start, 16 do
     turtle.select(inventory)
     turtle.drop()
   end
   turtle.turnRight()
 else
   if y % 2 == 0 then
     turtle.turnRight()
     for i = 1, y-1 do
       turtle.forward()
 	  posY = posY - 1
     end
 	for i = 1, z do
       turtle.down()
 	  posZ = posZ - 1
     end
     for inventory = inventory_start, 16 do
       turtle.select(inventory)
       turtle.drop()
     end
     turtle.turnRight()
   else
     turtle.turnLeft()
     for i = 1, y-1 do
       turtle.forward()
       posY = posY - 1
     end
     turtle.turnLeft()
     for i = 1, x-1 do
       turtle.forward()
 	  posX = posX - 1
     end
     for i = 1, z do
       turtle.down()
       posZ = posZ - 1
     end
     turtle.turnRight()
     for inventory = inventory_start, 16 do
       turtle.select(inventory)
       turtle.drop()
     end
     turtle.turnRight()
   end
 end