miningUtil.lua

function checkForBedrockFront()
    local success, data = turtle.inspect()
    if data.name == 'minecraft:bedrock' then
        print('Bedrock reached, program stopped')
		while true do
		end
    end
end

function checkForBedrockDown()
    local success, data = turtle.inspectDown()
    if data.name == 'minecraft:bedrock' then
        print('Bedrock reached, program stopped')
		while true do
		end
    end
end

function turnAroundRight()
    turtle.turnRight()
	repeat
		checkForBedrockFront()
		turtle.dig()
		checkInventoryFull()
	until(turtle.forward())
	turtle.digUp()
	checkInventoryFull()
	turtle.digDown()
	checkInventoryFull()
    turtle.turnRight()
	checkFuel()
end

function turnAroundLeft()
    turtle.turnLeft()
    repeat
		checkForBedrockFront()
		turtle.dig()
		checkInventoryFull()
	until(turtle.forward())
	turtle.digUp()
	checkInventoryFull()
	turtle.digDown()
	checkInventoryFull()
    turtle.turnLeft()
	checkFuel()
end

function checkInventoryFull()
	-- search for empty slot
	for slot = 3, 16, 1 do
		if turtle.getItemCount(slot) == 0 then
			return
		end
	end

	-- empty inventory into ender chest
	turtle.select(1)
	turtle.placeUp()
	for slot = 3, 16, 1 do
		turtle.select(slot)
		turtle.refuel()
		while not turtle.dropUp() and turtle.getItemCount(slot) ~= 0 do	-- wait if chest is full
			print('Waiting for ender chest to become empty...')
		end
		term.clear()
	end
	turtle.select(1)
	turtle.digUp()
end

function checkFuel()
	local fuelLevel = turtle.getFuelLevel()

	if fuelLevel < 5 then
		-- check for fuel in inventory
		for slot = 3, 16, 1 do
			turtle.select(slot)
			if turtle.refuel() then
				return
			end
		end

		-- get fuel from ender chest
		turtle.select(2)
		turtle.placeUp()
		turtle.select(3)
		while not turtle.suckUp() do	-- wait if chest is empty
			print('Waiting for fuel to become available...')
		end
		term.clear()
		turtle.select(2)
		turtle.digUp()

		-- get gathered fuel from inventory
		for slot = 3, 16, 1 do
			turtle.select(slot)
			if turtle.refuel() then
				return
			end
		end
	end
end

function digAndMoveForward()
	repeat
		checkForBedrockFront()
		turtle.dig()
		checkInventoryFull()
	until(turtle.forward())
	turtle.digUp()
	checkInventoryFull()
	turtle.digDown()
	checkInventoryFull()
	checkFuel()
end

function digAndMoveDown()
	repeat
		checkForBedrockDown()
		turtle.digDown()
		checkInventoryFull()
	until(turtle.down())
	turtle.digDown()
	checkInventoryFull()
	checkFuel()
end