View difference between Paste ID: L5c3MGas and mePGxstT

 local tArgs = { ... }
 if #tArgs < 1 then
 	print( "Usage: diggit <diameter> <0 or 1 for blacklist enabled>" )
 	return
 end
 
 -- Mine in a quarry pattern until we hit something we can't dig
 local size = tonumber( tArgs[1] )
 if size < 1 then
 	print( "Excavate diameter must be positive" )
 	return
 end
 
 local black = false
 
 if (#tArgs >= 2) then
 	black = (tArgs[2] == "1")
 else
 	tArgs[2] = "0"
-local depth = 0
+
 
 
 local uhand = fs.open("update", "w")
-local xPos,zPos = 0,0
+local ustr = "shell.run(\"rm posdata\")\n" .. "shell.run(\"rm diggit\")\n" .. "shell.run(\"pastebin get L5c3MGas diggit\")"
-local xDir,zDir = 0,1
+uhand.write(ustr)
 uhand.close()
 
 local shand = fs.open("startup", "w")
 shand.write("shell.run(\"diggit " .. tArgs[1] .. " " .. tArgs[2] .. "\")")
 shand.close()
 
 local posinfo = {
   ["xPos"] = 0,
   ["zPos"] = 0,
   ["xDir"] = 0,
   ["zDir"] = 1,
   ["depth"] = 0,
   ["done"] = false,
   ["maxdepth"] = 0,
   ["dxPos"] = 0,
   ["dzPos"] = 0,
   ["dxDir"] = 0,
   ["dzDir"] = 1,
   ["ddepth"] = 0
 }
 
 --local depth = 0
 local unloaded = 0
 local collected = 0
 
 --local xPos,zPos = 0,0
-	local x,y,z,xd,zd = xPos,depth,zPos,xDir,zDir
+--local xDir,zDir = 0,1
 
 local hRead
 local hWrite
 
 local goTo -- Filled in further down
 local refuel -- Filled in further down
 
 local function printPos()
 	print(posinfo.xPos .. "," .. posinfo.depth .. "," .. posinfo.zPos .. " : " .. posinfo.xDir .. "," .. posinfo.zDir)
 end
 
 local function wasDestroyed()
 	count = 0
 	for i = 1,16 do
 		count = count + turtle.getItemCount(i)
 	end
 	return (count == 0)
 end
 
 local function savePos()
 	hWrite = fs.open("posdata", "w")
 	hWrite.write(textutils.serialize(posinfo))
 	hWrite.close()
 	--printPos()
 end
 
 local function loadPos()
 	hRead = fs.open("posdata", "r")
 	posinfo = textutils.unserialize(hRead.readAll())
 	hRead.close()
 end
 
 local function turnLeft()
 	xd,zd = posinfo.xDir, posinfo.zDir
 	posinfo.dxDir = -zd
 	posinfo.dzDir = xd
 	savePos()
 	turtle.turnLeft()
 	posinfo.xDir = -zd
 	posinfo.zDir = xd
 	savePos()
 end
 
 local function turnRight()
 	xd,zd = posinfo.xDir, posinfo.zDir
 	posinfo.dxDir = zd
 	posinfo.dzDir = -xd
 	savePos()
 	turtle.turnRight()
-	local needed = ammount or (xPos + zPos + depth + 2)
+	posinfo.xDir = zd
 	posinfo.zDir = -xd
 	savePos()
 end
 
 local function trackForward()
 	if turtle.forward() then
 		posinfo.xPos = posinfo.xPos + posinfo.xDir
 		posinfo.zPos = posinfo.zPos + posinfo.zDir
 		savePos()
 		return true
 	else
 		return false
 	end
 end
 
 local function trackDown()
 	if turtle.down() then
 		posinfo.depth = posinfo.depth + 1
 		savePos()
 		if (posinfo.maxdepth < posinfo.depth) then
 			posinfo.maxdepth = posinfo.depth
 			savePos()
 		end
 		return true
 	else
 		return false
 	end
 end
 
 local function trackUp()
 	if turtle.up() then
 		posinfo.depth = posinfo.depth - 1
 		savePos()
 		return true
 	else
 		return false
 	end
 end
 
 local function unload( _bKeepOneFuelStack )
 	print( "Unloading items..." )
 	for n=1,16 do
 		local nCount = turtle.getItemCount(n)
 		if nCount > 0 then
 			turtle.select(n)
 			local bDrop = true
 			if _bKeepOneFuelStack and turtle.refuel(0) then
 				bDrop = false
 				_bKeepOneFuelStack = false
 			end
 			if bDrop then
 				turtle.drop()
 				unloaded = unloaded + nCount
 			end
 		end
 	end
 	collected = 0
-	while not turtle.forward() do
+
 end
 
 local function lookingAtChest()
 	s,d = turtle.inspect()
 	if (s) then
 		return string.find(d.name, "chest")
 	end
 	return false
 end
 
 local function chestUp()
 	s,d = turtle.inspectUp()
 	if (s) then
 		return string.find(d.name, "chest")
 	end
 	return false
 end
 
-	xPos = xPos + xDir
+local function chestDown()
-	zPos = zPos + zDir
+	s,d = turtle.inspectDown()
 	if (s) then
 		return string.find(d.name, "chest")
 	end
 	return false
 end
 
 local function panic()
 	local x,y,z,xd,zd = posinfo.xPos,posinfo.depth,posinfo.zPos,posinfo.xDir,posinfo.zDir
 	print( "Panic to surface..." )
 	if goCareTo( 0,0,0,0,-1) then
 
 	else
 		return false
 	end
 	if lookingAtChest() then
 		print("Alignment seems correct...")
 	else
 		return false
 	end
 	local fuelNeeded = 2*(x+y+z) + 1
 	if not refuel( fuelNeeded ) then
 		unload( true )
 		print( "Waiting for fuel" )
 		while not refuel( fuelNeeded ) do
 			os.pullEvent( "turtle_inventory" )
 		end
 	else
 		unload( true )
 	end
 	goTo( 0,0,0,0,1)
 	print( "I think I'm home..." )
 	return true
 end
-	while not turtle.down() do
+
 local function returnSupplies()
 	local x,y,z,xd,zd = posinfo.xPos,posinfo.depth,posinfo.zPos,posinfo.xDir,posinfo.zDir
 	print( "Returning to surface..." )
 	goTo( 0,0,0,0,-1 )
 
 	local fuelNeeded = 2*(x+y+z) + 1
 	if not refuel( fuelNeeded ) then
 		unload( true )
 		print( "Waiting for fuel" )
 		while not refuel( fuelNeeded ) do
 			os.pullEvent( "turtle_inventory" )
 		end
 	else
 		unload( true )
 	end
 
 	print( "Resuming mining..." )
-	depth = depth + 1
+
-	if math.fmod( depth, 10 ) == 0 then
+
-		print( "Descended "..depth.." metres." )
+
 local function collect()
 	local bFull = true
 	local nTotalItems = 0
 	for n=1,16 do
 		local nCount = turtle.getItemCount(n)
 		if nCount == 0 then
 			bFull = false
-	xDir, zDir = -zDir, xDir
+
 		nTotalItems = nTotalItems + nCount
 	end
 
 	if nTotalItems > collected then
-	xDir, zDir = zDir, -xDir
+
 		if math.fmod(collected + unloaded, 50) == 0 then
 			print( "Mined "..(collected + unloaded).." items." )
 		end
-	while depth > y do
+
-		if turtle.up() then
+
-			depth = depth - 1
+
 		print( "No empty slots left." )
 		return false
 	end
 	return true
 end
 
 function refuel( ammount )
-	if xPos > x then
+
-		while xDir ~= -1 do
+
 		return true
 	end
-		while xPos > x do
+
-			if turtle.forward() then
+	local needed = ammount or (posinfo.xPos + posinfo.zPos + posinfo.depth + 2)
-				xPos = xPos - 1
+
 		local fueled = false
 		for n=1,16 do
 			if turtle.getItemCount(n) > 0 then
 				turtle.select(n)
 				if turtle.refuel(1) then
 					while turtle.getItemCount(n) > 0 and turtle.getFuelLevel() < needed do
-	elseif xPos < x then
+
-		while xDir ~= 1 do
+
 					if turtle.getFuelLevel() >= needed then
 						turtle.select(1)
-		while xPos < x do
+
-			if turtle.forward() then
+
-				xPos = xPos + 1
+
 			end
 		end
 		turtle.select(1)
 		return false
 	end
 
 	return true
 end
-	if zPos > z then
+
-		while zDir ~= -1 do
+
 local idown
 local dup
-		while zPos > z do
+
-			if turtle.forward() then
+
-				zPos = zPos - 1
+
 	if not black then
 		return false
 	end
 	if (name == "minecraft:stone") then
 		return true
 	end
-	elseif zPos < z then
+	if (name == "minecraft:netherrack") then
-		while zDir ~= 1 do
+
 	end
 	if (name == "minecraft:dirt") then
-		while zPos < z do
+
-			if turtle.forward() then
+
-				zPos = zPos + 1
+
 		return true
 	end
 	if (name == "minecraft:lava") then
 		return true
 	end
 	if (name == "minecraft:flowing_water") then
 		return true
 	end
-	while depth < y do
+
-		if turtle.down() then
+
-			depth = depth + 1
+
 
 local function tryForwards()
 	if not refuel() then
 		print( "Not enough Fuel" )
 		returnSupplies()
 	end
 
-	while zDir ~= zd or xDir ~= xd do
+	while not trackForward() do
 		if turtle.detect() then
 			if turtle.dig() then
 				if not collect() then
 					returnSupplies()
 				end
 			else
 				return false
 			end
 		elseif turtle.attack() then
-print("Finding Excavation Floor...")
+
-while not turtle.detectDown() do
+
 			end
 		else
 			sleep( 0.5 )
 		end
 	end
-local reseal = false
+
-turtle.select(1)
+	--xPos = xPos + xDir
-if turtle.digDown() then
+	--zPos = zPos + zDir
-	reseal = true
+
 	iup, dup = turtle.inspectUp()
 	idown, ddown = turtle.inspectDown()
 
 	if iup then
 		if not (isBlacklist(dup.name)) then
 			if turtle.digUp() then
 				if not collect() then
 					returnSupplies()
 				end
 			end
 		end
 	end
 
 	if idown then
 		if not (isBlacklist(ddown.name)) then
 			if turtle.digDown() then
 				if not collect() then
 					returnSupplies()
 				end
 			end
 		end
 	end
 
 	return true
 end
 
 local function tryDown()
 	if not refuel() then
 		print( "Not enough Fuel" )
 		returnSupplies()
 	end
 
 	while not trackDown() do
 		if turtle.detectDown() then
 			if turtle.digDown() then
 				if not collect() then
 					returnSupplies()
 				end
 			else
 				return false
 			end
 		elseif turtle.attackDown() then
 			if not collect() then
 				returnSupplies()
 			end
 		else
 			sleep( 0.5 )
 		end
 	end
 
 	--depth = depth + 1
 	--if math.fmod( depth, 10 ) == 0 then
 	--	print( "Descended "..depth.." metres." )
 	--end
 
 	return true
 end
 
 local function careForward()
 	if trackForward() then
 	elseif lookingAtChest() then
 		print("I think I found my chest. I almost tried to break it!")
 		turnLeft()
 		turnLeft()
 		return false
 	elseif turtle.dig() or turtle.attack() then
 		collect()
 	else
 		sleep( 0.5 )
 	end
 	return true
 end
--- Seal the hole
+
-if reseal then
+function goCareTo( x, y, z, xd, zd )
-	turtle.placeDown()
+	while posinfo.depth > y do
 		if trackUp() then
 		elseif chestUp() then
 			print("I think I found my chest.")
 			return false
 		elseif turtle.digUp() or turtle.attackUp() then
 			collect()
 		else
 			sleep( 0.5 )
 		end
 	end
 
 	if posinfo.xPos > x then
 		while posinfo.xDir ~= -1 do
 			turnLeft()
 		end
 		while posinfo.xPos > x do
 			if careForward() then
 				sleep( 0.5 )
 			else
 				return false
 			end
 		end
 	elseif posinfo.xPos < x then
 		while posinfo.xDir ~= 1 do
 			turnLeft()
 		end
 		while posinfo.xPos < x do
 			if careForward() then
 				sleep( 0.5 )
 			else
 				return false
 			end
 		end
 	end
 
 	if posinfo.zPos > z then
 		while posinfo.zDir ~= -1 do
 			turnLeft()
 		end
 		while posinfo.zPos > z do
 			if careForward() then
 				sleep( 0.5 )
 			else
 				return false
 			end
 		end
 	elseif posinfo.zPos < z then
 		while posinfo.zDir ~= 1 do
 			turnLeft()
 		end
 		while posinfo.zPos < z do
 			if careForward() then
 				sleep( 0.5 )
 			else
 				return false
 			end
 		end
 	end
 
 	while posinfo.depth < y do
 		if trackDown() then
 			--depth = depth + 1
 		elseif turtle.digDown() or turtle.attackDown() then
 			collect()
 		else
 			sleep( 0.5 )
 		end
 	end
 
 	while posinfo.zDir ~= zd or posinfo.xDir ~= xd do
 		turnLeft()
 	end
 	return true
 end
 
 
 function goTo( x, y, z, xd, zd )
 	while posinfo.depth > y do
 		if trackUp() then
 			--depth = depth - 1
 		elseif turtle.digUp() or turtle.attackUp() then
 			collect()
 		else
 			sleep( 0.5 )
 		end
 	end
 
 	if posinfo.xPos > x then
 		while posinfo.xDir ~= -1 do
 			turnLeft()
 		end
 		while posinfo.xPos > x do
 			if trackForward() then
 				--xPos = xPos - 1
 			--elseif turtle.suck() then
 			elseif turtle.dig() or turtle.attack() then
 				collect()
 			else
 				sleep( 0.5 )
 			end
 		end
 	elseif posinfo.xPos < x then
 		while posinfo.xDir ~= 1 do
 			turnLeft()
 		end
 		while posinfo.xPos < x do
 			if trackForward() then
 				--xPos = xPos + 1
 			elseif turtle.dig() or turtle.attack() then
 				collect()
 			else
 				sleep( 0.5 )
 			end
 		end
 	end
 
 	if posinfo.zPos > z then
 		while posinfo.zDir ~= -1 do
 			turnLeft()
 		end
 		while posinfo.zPos > z do
 			if trackForward() then
 				--zPos = zPos - 1
 			elseif turtle.dig() or turtle.attack() then
 				collect()
 			else
 				sleep( 0.5 )
 			end
 		end
 	elseif posinfo.zPos < z then
 		while posinfo.zDir ~= 1 do
 			turnLeft()
 		end
 		while posinfo.zPos < z do
 			if trackForward() then
 				--zPos = zPos + 1
 			elseif turtle.dig() or turtle.attack() then
 				collect()
 			else
 				sleep( 0.5 )
 			end
 		end
 	end
 
 	while posinfo.depth < y do
 		if trackDown() then
 			--depth = depth + 1
 		elseif turtle.digDown() or turtle.attackDown() then
 			collect()
 		else
 			sleep( 0.5 )
 		end
 	end
 
 	while posinfo.zDir ~= zd or posinfo.xDir ~= xd do
 		turnLeft()
 	end
 end
 
 if not refuel() then
 	print( "Out of Fuel" )
 	return
 end
 
 print("Booting up...")
 if (fs.exists("posdata")) then
 	loadPos()
 	if (posinfo.done == true) then
 		print("Turtle is done.")
 		return
 	else
 		print("Turtle was interrupted...")
 		if wasDestroyed() then
 			print("I think I was picked up.")
 			return
 		end
 		if panic() then
 			goTo(0,posinfo.maxdepth,0,0,1)
 		else
 			bsuc,bdat = turtle.inspectUp()
 			if (string.find(bdat.name, "cobble")) then
 				if (lookingAtChest()) then
 					turnLeft()
 					turnLeft()
 					print("Aligned!")
 				else
 					turnLeft()
 					turnLeft()
 					if (lookingAtChest()) then
 						turnLeft()
 						turnLeft()
 						print("Aligned!")
 					else
 						turnLeft()
 						turnLeft()
 						print("I'm close as home as possible, couldn't find chest.")
 						return
 					end
 				end
 			else
 				print("I'm close as home as possible, alignment failed.")
 				return
 			end
 		end
 	end
 else
 	print("Turtle is ready to work...")
 	savePos()
 	print("Finding Excavation Floor...")
 	while not turtle.detectDown() do
 		tryDown()
 	end
 end
 
 print( "Excavating..." )
 
 local alternate = 0
 local done = false
 while not done do
 	for n=1,size do
 		for m=1,size-1 do
 			if not tryForwards() then
 				done = true
 				break
 			end
 		end
 		if done then
 			break
 		end
 		if n<size then
 			if math.fmod(n + alternate,2) == 0 then
 				turnLeft()
 				if not tryForwards() then
 					done = true
 					break
 				end
 				turnLeft()
 			else
 				turnRight()
 				if not tryForwards() then
 					done = true
 					break
 				end
 				turnRight()
 			end
 		end
 	end
 	if done then
 		break
 	end
 
 	if size > 1 then
 		if math.fmod(size,2) == 0 then
 			turnRight()
 		else
 			if alternate == 0 then
 				turnLeft()
 			else
 				turnRight()
 			end
 			alternate = 1 - alternate
 		end
 	end
 
 	if not tryDown() then
 		done = true
 		break
 	end
 	tryDown()
 	tryDown()
 	if turtle.detectDown() then
 		if turtle.digDown() then
 			if not collect() then
 				returnSupplies()
 			end
 		end
 	end
 end
 
 print( "Returning to surface..." )
 
 -- Return to where we started
 goTo( 0,0,0,0,-1 )
 unload( false )
 goTo( 0,0,0,0,1 )
 
 posinfo.done = true
 savePos()
 
 print( "Mined "..(collected + unloaded).." items total." )