View difference between Paste ID: CTGHjq4Z and qJEwQBMb

 --variables
 --len = shaft length
 --notDig = number of blocks that are not mined in the shaft
 --torch = location of torches
 --curDist = distance from start
 --heightPos = current relative height
 --runProgram = what program has been selected for the turtle
 --isAtHome = remember if you're at home
 --height = shaft height
---top = bool for checking if the turtle is mining the top ot bot level of the shaft
+--miningLog = info about where the vein the miner is following
-local top = false
+--curDir = current direction (in relative terms, 1 is forward, 2 is right, 3 is back, 4 is left)
---run init instead of the main program
+
-runProgram = "main"
+
 local torch = 16 - notDig
-isAtHome = true
+
 local heightPos = 0
 local runProgram = "main"
 local isAtHome = true
 local height = 2
 local miningLog = {}
 local curDir = 1
 
 
 --clear the screen
 function clrScr()
-if #tArgs > 2 or #tArgs == 0 then
+
 	term.setCursorPos(1,1)
 end
 
 --argument parsing
 local tArgs = {...}
 if #tArgs > 3 or #tArgs == 0 then
 	print( "Type 'shaft help' for instructions" )
-		runProgram = tArgs[1]
+
 	if tonumber(tArgs[1]) ~= nil then
 		runProgram = "main"
-	len = tonumber( tArgs[1] )
+
-	notDig = tonumber ( tArgs[2] )
+
-	torch = 16 - notDig
+		runProgram = tArgs[1]
 	end
 elseif #tArgs == 3 then
---
+	if tonumber(tArgs[1]) ~= nil or tonumber(tArgs[2]) ~= nil or tonumber(tArgs[3]) ~= nil then
 		len = tonumber( tArgs[1] )
 		height = tonumber( tArgs[2] )
-	print("Usage: shaft [length] [blocks]")
+		notDig = tonumber ( tArgs[3] )
-	print("Length is the length of the mining shaft.")
+		torch = 16 - notDig
 	else
 		runProgram = "help"
 	end
 elseif #tArgs == 2 then
 	if tonumber(tArgs[1]) ~= nil or tonumber(tArgs[2]) ~= nil then
 		len = tonumber( tArgs[1] )
 		height = tonumber( tArgs[2] )
 	else
 		runProgram = "help"
 	end
 end
 
 
 
 --help output
 function runHelp()
 	clrScr()
 	print("Usage: shaft [length] [height] [blocks]")
 	print("Length[0+] and height[1-60] are the dimensions of the mining shaft.")
 	print("Blocks is the number of blocks that will not be mined [range: 0-10]. By default it's 3 for stone, gravel and dirt and they need to be put in slots 16, 15 and 14")
 	print("Enter for more...")
 	io.read()
 	term.clear()
 	print("Torches are placed every 8 blocks and go 1 slot before the ores that won't be mined, by default 13.")
 	print("Place chest underneath the starting position.")
 	print("use 'shaft init' to make a starting room")
 	print("Enter for more...")
 	io.read()
 	term.clear()
-			print("Fuel level: ",turtle.getFuelLevel())
+	print("'shaft left' will move the turtle 4 blocks to the left to start a new mining shaft.")
 	print("'shaft right' will do the same thing on the right side.")
 	print("While repositioning it also mines a 2 high and 3 wide tunnel.")
 	print("Enter to continue.")
 	io.read()
 end
 
 --build the starting room
 function initRoom()
 	refuel(30, "Please input fuel to continue and press enter.")
 	turtle.select(1)
 	mineUp()
 	digAndMove()
 	turtle.digDown()
 	turtle.turnLeft()
 	digAndMove()
 	turtle.digDown()
 	turtle.turnLeft()
 	digAndMove()
 	turtle.digDown()
 	digAndMove()
 	turtle.digDown()
 	turtle.back()
 	turtle.turnRight()
 	turtle.back()
 	turtle.down()
 	chestCheck()
 end
 
 --checks if there's a chest(currently block) in front
 function chestCheck()
 	clrScr()
 	while not turtle.detect() do
 		print("Place down a chest in front of the turtle and press enter to finish.")
 		io.read()
 	end
 
 	turtle.turnRight()
 	clrScr()
 	print("Starting position complete!")
 end
 
 --setup for another shaft on the left
 function shaftLeft()
 	refuel(30, "Please input fuel to continue and press enter.")
 	turtle.turnLeft()
 	clrScr()
 	if turtle.detect() then
 		print("WARNING! Clear out the chest before moving on! This is your only warning! Once you hit enter the turtle will move on!")
 		io.read()
 	end
 	clrScr()
 	print("Moving on to the left!")
 	mineUp()
 	for i = 1, 5 do
 		digAndMove()
-	turtle.place()
+		turtle.digDown()
 		turtle.turnLeft()
 		digAndMove()
 		turtle.digDown()
 		turtle.back()
 		turtle.turnLeft()
 		turtle.turnLeft()
 		digAndMove()
 		turtle.digDown()
 		turtle.back()
 		turtle.turnLeft()
 	end
 	turtle.back()
 	turtle.down()
 	chestCheck()
 end
 
 --setup for another shaft on the right
-			print("Please put at least 1 block into slots ",17-notDig,"-16 for the items you don't want to mine and press enter.")
+
 	refuel(30, "Please input fuel to continue and press enter.")
 	turtle.turnRight()
 	clrScr()
 	print("Moving on to the right!")
 	mineUp()
 	for i = 1, 5 do
---torch placement
+
 		turtle.digDown()
 		turtle.turnLeft()
 		digAndMove()
 		turtle.digDown()
 		turtle.back()
 		turtle.turnLeft()
 		turtle.turnLeft()
 		digAndMove()
 		turtle.digDown()
 		turtle.back()
 		turtle.turnLeft()
 	end
 	turtle.back()
 	turtle.down()
 	turtle.turnLeft()
 	turtle.turnLeft()
 	chestCheck()
 end
 
 --refueling
 function refuel(need, message)
 	while turtle.getFuelLevel() < (need) do
 		for n=1,(16-notDig) do
 			local nCount = turtle.getItemCount(n)
 			if nCount > 0 then
 				turtle.select(n)
 				refueled = turtle.refuel(1)
 				while turtle.getFuelLevel() < need and refueled == true do
-	if top then
+
 					if turtle.getFuelLevel() > need and refueled == true then
 						break
 					end
-		turtle.up()
+
 			end
-	for i = 1, curDist do
+
-		turtle.forward()
+
 			print(message)
 			print("Fuel level = ",turtle.getFuelLevel()," need: ",need)
 			print("Mining distance: ",curDist)
 			io.read()
 			refuel(need,message)
 		elseif turtle.getFuelLevel() < need and isAtHome == false then
 			goHome()
-	turtle.up()
+
-	for i = 1, curDist do
+
 			goBack()
 		end
-	if top then
+
 		print("Turtle refuled. Returning to work...")
 	end
 end
-		turtle.down()
+
 --check if blocks that should not be mined and torches are inserted
 function validateInv()
 	while turtle.getItemCount(torch) < 2 do
 		clrScr()
 		print("")
 		print("Please put torches into slot ",torch," and press enter to continue.")
 		io.read()
 	end
 	while not blocksPresent do
 		blocksPresent = true
 		for i = 17-notDig, 16 do
 			if turtle.getItemCount(i) == 0 then blocksPresent = false end
 		end
 		if not blocksPresent then
 			print("Please put at least 1 block into slots ",(17-notDig),"-16 for the items you don't want to mine and press enter.")
 			io.read()
 		end
 		clrScr()
 	end
 end
 
 function mineUp()
 	while not turtle.up() do
---function that moves forward and digs if there's an obstacle
+      if not turtle.digUp() then
 		return false
-  while not turtle.forward() do
+	  end
-    sleep(0.5)
+
-	turtle.dig()
+
-  end
+	return true
 end
 
 function digAndMove()
 	while not turtle.forward() do
 		if not turtle.dig() then
 			return false
 		end
 		sleep(0.5)
 	end
 	return true
 end
 
 --check the 6 sides around the miner and mine if you find ore, then move in and repeat
 function mineOre()
 	direction = detectOre()
 	while #miningLog > 0 do
 		direction = detectOre()
 		if direction == 7 then
---special case for mining up
+			backtrack = miningLog[#miningLog]
 			table.remove(miningLog,#miningLog)
 			if backtrack == 5 then
-      turtle.digUp()
+				while not turtle.down() do end
 			elseif backtrack == 6 then
 				while not turtle.up() do end
 			else
 				while backtrack ~= curDir do
---check for ore below miner
+					turtle.turnLeft()
-function checkDown()
+					curDir = curDir - 1
-  ore = true
+					if curDir == 0 then curDir = 4 end
-  if turtle.detectDown() then
+
-    for i = 17-notDig, 16 do
+				while not turtle.back() do end
 			end
-		if turtle.compareDown() then
+
-			ore = false
+
 	--curDir
 end
-  else
+
-    ore = false
+--detect if there's ore around you and return the direction
-  end
+function detectOre()
-  return ore
+	dig = true
 	if turtle.detectUp() then
 		for i = (16-notDig), 16 do
---check for ore above miner
+			turtle.select(i)
-function checkUp()
+			if turtle.compareUp() then dig = false end
-  ore = true
+
-  if turtle.detectUp() then
+		if dig then
-    for i = 17-notDig, 16 do
+			if mineUp() then
 				table.insert(miningLog,5)
-		if turtle.compareUp() then
+				return 5
-			ore = false
+
 		end
 	end
-  else
+	dig = true
-    ore = false
+	if turtle.detectDown() then
-  end
+		for i = (16-notDig), 16 do
-  return ore
+			turtle.select(i)
 			if turtle.compareDown() then dig = false end
 		end
---check for ore in front miner
+		if dig then
-function checkFront()
+			if turtle.digDown() then
-  ore = true
+				turtle.down()
-  if turtle.detect() then
+				table.insert(miningLog,6)
-    for i = 17-notDig, 16 do
+				return 6
 			end
-		if turtle.compare() then
+
-			ore = false
+
 
 	for i = 1, 4 do
-  else
+		dig = true
-    ore = false
+		if turtle.detect() then
-  end
+			for j = (16-notDig), 16 do
-  return ore
+				turtle.select(j)
 				if turtle.compare() then dig = false end
 			end
 			if dig == true then
 				if digAndMove() then
-  if checkDown() then
+					table.insert(miningLog,curDir)
 					return curDir
 				end
-	mineOre()
+
-	turtle.up()
+
-  end
+		turtle.turnRight()
-  if checkUp() then
+		curDir = curDir + 1
 		if curDir == 5 then curDir = 1 end
-	mineOre()
+
 
-  end
+	return 7
-  if checkFront() then
+
-    digAndMove()
+
-	mineOre()
+--torch placemen
 function placeTorch()
-  end
+
-  turtle.turnRight()
+
-  if checkFront() then
+
-    digAndMove()
+
-	mineOre()
+
 	if turtle.getItemCount(torch) < 2 then
-  end
+
-  turtle.turnRight()
+
-  if checkFront() then
+
-    digAndMove()
+
-	mineOre()
+
 			print("")
-  end
+
-  turtle.turnRight()
+
-  if checkFront() then
+
-    digAndMove()
+
-	mineOre()
+
 		print("Turtle ready! Resuming work...")
-  end
+
-  turtle.turnRight()
+
 	if i == 0 then
 		turtle.back()
 		turtle.placeUp()
 		digAndMove()
 	end
 end
-	print("Starting to mine a shaft ",len," long with ",notDig," block exceptions.")
+
 --return home
 function goHome()
 	i=0
 	while i ~= curDist do
 		if turtle.back() then i = i+1 end
-	--go up 1 as we will start mining at the top row
+
 	isAtHome = true
 end
-	mineOre()
+
-
+
-	--start diging the top and checking it for ore and refueling if needed
+
-	top = true
+	i=0
 	while i ~= curDist do
 		if turtle.forward() then i = i+1 end
 	end
 	isAtHome = false
 end
 
 --function to clean inventory
 function emptyInventory()
-	--move down to bottom row
+
 	for i = 1, 15-notDig do
 		turtle.select(i)
 		if turtle.getItemCount(i) > 0 then
 			while not turtle.drop() do
-	top = false
+
-	mineOre()
+
 				io.read()
-	--now dig the bottom while, again, checking for ore and fuel but also place down torches
+
-	for i = 1, (len-1) do
+
 	end
 	turtle.turnRight()
 end
 
-		curDist = curDist - 1
+
 function checkInventory()
-
+
 	tempCounter = 0
 	for i = 1, drop do
-	turtle.forward()
+
 	end
 	if tempCounter == drop then
 		clrScr()
 		print("Inventory full, returning home.")
 		goHome()
 		emptyInventory()
 		refuel(curDist*2 + 150, "Not enough fuel to return to work. Insert fuel and press enter.")
 		clrScr()
 		print("Turtle ready! Resuming work...")
---run init room
+
-function runInit()
+
 end
-	while turtle.getItemCount(1) < 1 do
+
-		print("Please insert chest into slot 1 and press enter")
+
 function mainDig()
 	clrScr()
-	initRoom()
+
 	print("Starting to mine a shaft ",len," long with ",notDig," block exceptions and a height of ",height,".")
-	print("Startup location ready!")
+	print("")
 
 	--validate the inventory before starting
 	refuel(95, "Input fuel and press enter!")
 	validateInv()
 
 	--start diging the shaft 1 by 1
 	for i = 1, len do
-	while turtle.getItemCount(1) < 1 do
+
-		print("Please insert chest into slot 1 and press enter")
+
 		if i == 1 then isAtHome = false end
 		digAndMove()
 		curDist = curDist + 1
 		mineOre()
-		print("WARNING! Clear out the chest before moving on! This is your only warning, once you hit enter the turtle will move on!")
+		for i = 2, height do
 			mineUp()
 			mineOre()
 			heightPos = heightPos + 1
 		end
 		i = 1
 		while i ~= height do
 			if turtle.down() then
 				i = i + 1
 				heightPos = heightPos + 1
 			end
 		end
 		placeTorch()
 		if curDir ~= 1 then
 			for i = 2, curDir do
 				turtle.turnLeft()
 			end
 			curDir = 1
 		end
 	end
-	runInit()
+
 	--return to base
 	print("Done mining. Returning home.")
 	i = 0
 	while i ~= len do
 		if turtle.back() then i = i + 1 end
 	end
 
 	emptyInventory()
 	isAtHome = true
 
 	--clrScr()
 	print("Work complete!")
 end
 
 --choose what to run
 function main()
 	--clrScr()
-	print("Left expansion ready!")
+
 		initRoom()
 	elseif runProgram == "help" then
 		runHelp()
 	elseif runProgram == "left" then
 		shaftLeft()
 	elseif runProgram == "right" then
 		shaftRight()
-	while turtle.getItemCount(1) < 1 do
+
-		print("Please insert chest into slot 1 and press enter")
+		if len > 0 and notDig < 11 and notDig > -1 and height > 0 and height < 61 and #tArgs > 0 and #tArgs < 4 then
 			mainDig()
 		elseif #tArgs > 0 and #tArgs < 4 then
 			print("Shaft needs to be at least 1 long, height needs to be between 1 and 60 and maximum block exception is 10.")
 		end
 	end
 end
 
 
 --and in the end, just run the main! :)
 main()