View difference between Paste ID: PS1M16TT and 7TPW0tjs

 --Edit these values for the dimensions to dig out----------------------
 
 width = 55
 length = 55
 height = 4
 
 --[[--------Setup----------------------
 1. Dig out a 5x5 square to work in
     (The turtle will not dig this area!)
 2. Place the turtle facing out at the
     center of any edge
 3. Place a chest of coal/charcoal
     to the left of the turtle
 4. Place a chest of vanilla wood items
     (logs, planks, sticks) or
     torches to the right.
 5. Place storage chests facing
     the turtle to the left
     and the right of the
     center of the 5x5
     You can place the chests as high
     as you like for more storage
 ---Example---
 t = turtle
 c = chest
 x = empty spot
 O = center of the area to dig
 
 x c t c x
 x x x x x
 c c O c c
 x x x x x
 x x x x x
 --]]
 
 --[[ Enter Starting Position ]]
 
 StartingRadius = 3
 StartingHeight = 1
 
 --[[ Defaults ]]
 --StartingRadius = 3
 --StartingHeight = 1
 --------------------------------------------------------
 
 
 
 dir = "z"
 facing = 1
 x = 0
 z = 2
 y = 1
 
 xmax = math.floor(width/2)
 xmin = 0-math.floor(width/2)
 zmax = math.floor(length/2)
 zmin = 0-math.floor(length/2)
 
 stop = 0
 returning = 0
 
 function refuel()
     if turtle.getFuelLevel() < ((width + length + height) * 2) then
         turtle.select(16)
         if turtle.refuel(1) then
             if turtle.getItemCount(16) < 2 then
                 print "Low on Fuel. Restocking..."
                 home()
                 restock()
                 goBack()
             end
         else
             print "Low on Fuel. Restocking..."
             home()
             restock()
             goBack()
         end
         turtle.select(1)
     end
 end
 
 function forward()
     local dig = 1
     torch = false
   if returning == 0 then
     refuel()
   end
 
   if (z % 7) == 0 and (x % 7) == 0 then
     torch = true
     turnLeft()
     turnLeft()
     turtle.dig()
     turnLeft()
     turnLeft()
     if turtle.getItemCount(15) < 5 and returning == 0 then
         home()
         restock()
         goBack()
     end
   end
 
   if dir == "x" then
     if facing == 1 and x == xmax then
         dig = 0
     end
     if facing == -1 and x == xmin then
         dig = 0
     end
   end
   if dir == "z" then
     if facing == 1 and z == zmax then
         dig = 0
     end
     if facing == -1 and z == zmin then
         dig = 0
     end
   end
   while not turtle.forward() and dig == 1 do
     turtle.dig()
     turtle.attack()
   end
   if torch == true and y == 1 then
     turnLeft()
     turnLeft()
     turtle.select(15)
     turtle.place()
     turtle.select(1)
     turnLeft()
     turnLeft()
     torch = false
   end
   if dir == "z" then
     z = z + facing
   elseif dir == "x" then
     x = x + facing
   end
 
   if y == 1 then
     turtle.select(1)
     turtle.placeDown()
   end
 
   if y == height then
     turtle.placeUp()
   end
 
 
 
   if returning == 0 then
       if turtle.getItemCount(14) > 0 then
         print "Inventory Full. Dropping off Items..."
         home()
         restock()
         goBack()
       end
   end
 end
 
 function turnRight()
     turtle.turnRight()
     if dir == "z" then
         dir = "x"
     elseif dir == "x" then
         dir = "z"
         if facing == 1 then
             facing = -1
         elseif facing == -1 then
             facing = 1
         end
     end
 end
 
 function turnLeft()
     turtle.turnLeft()
     if dir == "z" then
         dir = "x"
         if facing == 1 then
             facing = -1
         elseif facing == -1 then
             facing = 1
         end
     elseif dir == "x" then
         dir = "z"
     end
 end
 
 function up()
     while turtle.up() == false do
         turtle.digUp()
     end
     y = y + 1
 end
 
 function down()
     while turtle.down() == false do
         turtle.digDown()
     end
     y = y - 1
 end
 
 function dig()
     if y < height then
         if inspectUp("minecraft:flowing_water") or inspectUp("minecraft:water") or inspectUp("minecraft:lava") or inspectUp("minecraft:flowing_lava") then
             up()
             if inspectUp("minecraft:flowing_water") or inspectUp("minecraft:water") or inspectUp("minecraft:lava") or inspectUp("minecraft:flowing_lava") then
                 turtle.placeUp()
             end
             for i=1,4 do
                 if inspect("minecraft:flowing_water") or inspect("minecraft:water") or inspect("minecraft:lava") or inspect("minecraft:flowing_lava") then
                     turtle.place()
                     turtle.dig()
                 end
                 turnRight()
             end
             down()
         end
         while turtle.digUp() do
         end
         if inspectUp("minecraft:gravel") or inspectUp("minecraft:sand") then
             while turtle.digUp() do
                 sleep(1)
             end
         end
     end
 end
 function home()
     oldx = x
     oldz = z
     oldy = y
     olddir = dir
     oldfacing = facing
 
     returning = 1
 
     while y > 1 do
         down()
     end
 
     if dir == "z" then
         if facing == 1 then
             if z > 3 then
                 turnRight()
                 turnRight()
                 while z > 3 do
                     forward()
                 end
                 turnLeft()
                 while x < 0 do
                     forward()
                 end
                 turnRight()
                 forward()
             elseif z < 3 then
                 turnRight()
                 forward()
                 turnLeft()
                 while z < 3 do
                     forward()
                 end
                 turnRight()
                 while x < 0 do
                     forward()
                 end
                 turnRight()
                 forward()
             elseif z == 3 then
                 turnRight()
                 while x < 0 do
                     forward()
                 end
                 turnRight()
                 forward()
             end
         elseif facing == -1 then
             if z < 3 then
                 turnRight()
                 turnRight()
                 while z < 3 do
                     forward()
                 end
                 turnLeft()
                 while x > 0 do
                     forward()
                 end
                 turnLeft()
                 forward()
             elseif z > 3 then
                 turnRight()
                 forward()
                 turnLeft()
                 while z > 3 do
                     forward()
                 end
                 turnRight()
                 while x > 0 do
                     forward()
                 end
                 turnLeft()
                 forward()
             elseif z == 3 then
                 turnLeft()
                 while x < 0 do
                     forward()
                 end
                 turnLeft()
                 forward()
             end
         end
     elseif dir == "x" then
         if facing == 1 then
             if x > 0 then
                 turnRight()
                 turnRight()
                 while x > 0 do
                     forward()
                 end
                 turnLeft()
                 while z > 2 do
                     forward()
                 end
             elseif x < 0 then
                 turnRight()
                 forward()
                 turnLeft()
                 while x < 0 do
                     forward()
                 end
                 turnRight()
                 while z > 2 do
                     forward()
                 end
             elseif x == 0 then
                 turnRight()
                 while z > 2 do
                     forward()
                 end
             end
         elseif facing == -1 then
             if x > 3 then
                 turnRight()
                 forward()
                 turnLeft()
                 while x > 3 do
                     forward()
                 end
                 turnRight()
                 while z < 3 do
                     forward()
                 end
                 turnLeft()
                 while x > 0 do
                     forward()
                 end
                 turnLeft()
                 forward()
             elseif x < 3 then
                 turnRight()
                 turnRight()
                 while x < 3 do
                     forward()
                 end
                 turnLeft()
                 while z < 3 do
                     forward()
                 end
                 turnLeft()
                 while x > 0 do
                     forward()
                 end
                 turnLeft()
                 forward()
             end
         end
     end
     turnLeft()
     turnLeft()
     returning = 0
 end
 
 function dropoff()
     for i=2,14 do
         turtle.select(i)
         if turtle.drop() == false and turtle.getItemCount() > 0 then
             return false
         end
     end
     return true
 end
 
 function inspect(block)
     p1, p2 = turtle.inspect()
     if p1 == true then
         for k,v in pairs(p2) do
             if v == block then
                 return true
             else
                 return false
             end
         end
     else
         return false
     end
 end
 
 function inspectUp(block)
     p1, p2 = turtle.inspectUp()
     if p1 == true then
         for k,v in pairs(p2) do
             if v == block then
                 return true
             else
                 return false
             end
         end
     else
         return false
     end
 end
 
 function detail(item)
     local data = turtle.getItemDetail()
 
     if data then
         if data.name == item then
             return true
         else
             return false
         end
     else
         return false
     end
 end
 
 function stick()
     turtle.select(1)
     turtle.transferTo(5)
     turnLeft()
     turnLeft()
     turtle.suck()
     turtle.craft()
     if detail("minecraft:coal") or detail("minecraft:charcoal") then
         turtle.drop()
         turtle.select(2)
         turtle.transferTo(1)
         turtle.select(1)
     end
     turnLeft()
     turnLeft()
     turtle.transferTo(15)
 end
 
 function planks()
     turtle.select(1)
     turtle.transferTo(5,(math.floor(turtle.getItemCount()/2)))
     turtle.craft()
     if detail("minecraft:planks") then
         turtle.drop()
         turtle.select(5)
         turtle.drop()
         turtle.select(2)
         turtle.transferTo(1)
     end
     stick()
 end
 
 function log()
     turtle.select(1)
     turtle.craft()
     if detail("minecraft:log") then
         turtle.drop()
         turtle.select(2)
         turtle.transferTo(1)
     end
     planks()
 end
 
 function restock()
     local empty = 0
     returning = 1
     turnLeft()
     turnLeft()
     forward()
     turnRight()
     forward()
     turnLeft()
     while inspect("minecraft:chest") == true and empty == 0 do
         if dropoff() == true then
             empty = 1
         else
             up()
         end
     end
 
     if empty == 0 then
         while y > 1 do
             down()
         end
         turnLeft()
         forward()
         forward()
         turnRight()
         while inspect("minecraft:chest") == true and empty == 0 do
             if dropoff() == true then
                 empty = 1
             else
                 up()
             end
         end
     end
 
     if empty == 1 then
         while y > 1 do
             down()
         end
         if x > 0 then
             turnRight()
             forward()
             turnRight()
         else
             turnLeft()
             forward()
             turnLeft()
         end
         forward()
     end
 
     if empty == 0 then
         shell.exit()
         print "WARNING! No more storage: Shutting down..."
         print "Press any key to end."
     end
     if turtle.getItemCount(15) < 60 then
         turnLeft()
         turtle.select(16)
         turtle.drop()
         turnRight()
         turtle.select(1)
         turtle.drop()
         turtle.select(15)
         turnRight()
         turtle.drop()
         turtle.select(1)
         while turtle.getItemCount(15) < 60 do
             turtle.select(15)
             turtle.drop()
             turtle.select(1)
             turtle.suck()
             if detail("minecraft:torch") then
                 turtle.transferTo(15)
             elseif detail("minecraft:stick") then
                 stick()
             elseif detail("minecraft:planks") then
                 planks()
             elseif detail("minecraft:log") then
                 log()
             end
         end
         dropoff()
         turnLeft()
         turtle.select(1)
         turtle.suck()
     end
     if turtle.getItemCount(16) < 60 then
         turnLeft()
         turtle.select(16)
         while turtle.getItemCount() < 60 do
             turtle.suck(5)
         end
         turnRight()
         turtle.select(1)
     end
     returning = 0
 end
 
 function goBack()
     returning = 1
     forward()
     turtle.select(1)
     turtle.suck()
     if oldx > 0 then
         turnRight()
         while x < oldx do
             forward()
         end
         turnLeft()
     elseif oldx < 0 then
         turnLeft()
         while x > oldx do
             forward()
         end
         turnRight()
     end
     if x > -3 and x < 3 and oldz < 3 then
         turnRight()
         while x < 3 do
             forward()
         end
         turnLeft()
     end
     if oldz > 0 then
         while z < oldz do
             forward()
         end
     elseif oldz < 0 then
         turnLeft()
         turnLeft()
         while z > oldz do
             forward()
         end
         turnLeft()
         turnLeft()
     end
     if x > oldx then
         turnLeft()
         while x > oldx do
             forward()
         end
         turnRight()
     end
     while dir ~= olddir or facing ~= oldfacing do
         turnRight()
     end
     while y < oldy do
         up()
     end
     returning = 0
 end
 
 levels = math.ceil(height/2)
 
 goback = 0
 for i=1,levels do
     while y < StartingHeight do
         up()
     end
     while y < ((i*2)-1) do
         up()
     end
     ring = 6
     if StartingRadius > 3 then
         if goback == 0 then
             goback = 1
             print "Starting Radius set higher than 3"
             print "Moving to new start"
             ring = StartingRadius * 2
             while z < StartingRadius and z < zmax do
                 forward()
                 dig()
             end
             turnRight()
             dig()
             while x < StartingRadius and x < xmax do
                 forward()
                 dig()
             end
             turnRight()
         end
     else
         dig()
         forward()
         dig()
         turnLeft()
         forward()
         dig()
         forward()
         dig()
         turnRight()
         turnRight()
         while x < 3 do
           forward()
           dig()
         end
         turnRight()
     end
 
 
 
     while z < zmax or x > xmin or stop == 0 do
       for i=1,(ring) do
         if z > zmin then
           forward()
           dig()
         end
       end
       turnRight()
       for i=1,(ring) do
         if x > xmin then
           forward()
           dig()
         end
       end
       turnRight()
       ring = ring + 1
       for i=1,(ring) do
         if z < zmax then
           forward()
           dig()
         end
       end
       turnRight()
       if x == xmin and z == zmax then
         stop = 1
       end
       for i=1,(ring) do
         if x < xmax and stop == 0 then
           forward()
           dig()
         end
       end
       turnRight()
       ring = ring + 1
     end
 
     turnLeft()
     turnLeft()
     home()
     restock()
 
 end
 print ("Finished Clearing Area!")
 print ("Mined an area " .. length .. " by " .. width .. " by " .. height .. ".")
 print ("Mined a total area of " .. (length * width * height) .. " blocks!")