View difference between Paste ID: MgBVtJWy and urvJWGnu

 -- Build Tools
 -- dig v1
 
 local args = { ... }
 
 if args[1] == nil or args[2] == nil or args[3] == nil or turtle.getItemCount(1) < 1 or args[1] == "help" then
   print ("Usage: dig [forward length] [right length] [depth]")
   print ("Put an ender chest in the first slot")
   return
 end
 
 local tilt = 0
 local flength = tonumber(args[1])
 local rlength = tonumber(args[2])
 local depth = tonumber(args[3])
 local blocks = rlength * flength * depth
 
 if turtle.getFuelLevel() < blocks + rlength + flength + depth and args[4] ~= "-f" then
   print ("You do not have enough fuel. This job needs ", fuelreq, " fuel.")
   print ("Add more fuel, or append -f to dig anyway.")
   return
 end
 
 function step()
   while not turtle.forward() do
     turtle.dig()
   end
 end
 
 function stepUp()
   while not turtle.up() do
     turtle.digUp()
   end
 end
 
 function stepDown()
   while not turtle.down() do
     turtle.digDown()
   end
 end
 
 function placeUp()
   while not turtle.placeUp() do
     turtle.digUp()
   end
 end
 
 function rotateRight()
   turtle.turnRight()
   if vertical then
     stepUp()
   else
     step()
   end
   turtle.turnRight()
 end
 
 function rotateLeft()
   turtle.turnLeft()
   if vertical then
     stepUp()
   else
     step()
   end
   turtle.turnLeft()
 end
 
 -- Dump inventory into ender chest.
 function dump()
   turtle.select(1)
   placeUp()
   for m = 2, 16, 1 do
     turtle.select(m)
     turtle.dropUp()
   end
   turtle.select(1)
   turtle.digUp()
 end
 
 -- Dig 'em up.
 for i = 1, depth, 1 do
   for j = 1, rlength, 1 do
     for k = 1, flength, 1 do
       if turtle.getItemCount(16) > 1 then
         dump()
       end
       turtle.digDown()
       if k < flength then
         step()
       end
     end
     if j < rlength then
       if (j + tilt) % 2 ~= 0 then
         rotateRight()
       else
         rotateLeft()
       end
     end
   end
   if rlength % 2 == 0 and i % 2 ~= 0 then
     tilt = 1
   else
     tilt = 0
   end
   turtle.turnRight()
   turtle.turnRight()
   stepDown()
 end
 
 -- Raise to initial height.
 for i = 1, depth, 1 do
   stepUp()
 end
 
 -- Return to origin.
 if depth % 2 ~= 0 then
   if rlength % 2 == 0 then
     turtle.turnLeft()
     for i = 1, rlength - 1, 1 do
       step()
     end
   else
     turtle.turnRight()
     for i = 1, rlength - 1, 1 do
       step()
     end
     turtle.turnLeft()
     for i = 1, flength - 1, 1 do
       step()
     end
   end
 end