-- Variable decleration.
local cycleCount
local inFront, blockInfo = turtle.inspect()

-- Functions.
function digSuckMove(direction)
	if direction == "up" then
		if turtle.detect() == true then
			print("Block above! Mining, picking up and moving up!")
			turtle.digUp()
			turtle.suckUp()
			turtle.up()
		else
			print("Nothing above! Moving up!")
			turtle.up()
		end

	elseif direction == "down" then
		if turtle.detectDown() == true then
			print("Block below! Mining, picking up and moving down!")
			turtle.digDown()
			turtle.suckDown()
			turtle.Down()
		else
			print("Nothing below! Moving down!")
			turtle.Down()
		end

	elseif direction == "forward" then
		if turtle.detect() == true then
			print("Block in front! Mining, picking up and moving forward!")
			turtle.dig()
			turtle.suck()
			turtle.forward()
		else
			print("Nothing in front! Moving forward!")
			turtle.forward()
		end
	else
		print("Invalid argument!")
	end
end

function returnToStart()
	for i3 = 1, cycleCount, 1 do
		turtle.back()
	end
end

-- Read the cycle count.
print("How many cycles to run?")
cycleCount = read()

-- Run the cycle.
for i = 1, cycleCount, 1 do

  -- Print the current cycle number.
  print("Running cycle number "..i..".")

  digSuckMove("forward")
  digSuckMove("up")
  digSuckMove("up")
  turtle.turnLeft()

  for i2 = 1, 2, 1 do
	turtle.dig()
	turtle.down()
  end
  turtle.dig()

  turtle.turnRight()
  turtle.turnRight()

  for i2 = 1, 2, 1 do
	turtle.dig()
	turtle.up()
  end
  turtle.dig();

  turtle.back()
  turtle.turnLeft()
  turtle.down()
  turtle.down()

-- End of for.
end

print("Run completed successfuly! Returning to base!")
returnToStart()

print("Returned to starting position! Press any button to clear screen!");
os.pullEvent('key')
term.clear()
term.setCursorPos(1,1)

-- Prevent instant termination.
-- read()