local loop = true
local mine = true
local col = 0
local colactive = true
local i = 0
local countdown
local time
write("Wartezeit: ")
time = read()
while loop == true do
	local right = false
	turtle.select(1)
	turtle.turnLeft()
	turtle.suck(3)
	turtle.refuel(3)
	turtle.turnRight()

	col = 0
	colactive = true
	countdown = time
	while countdown ~= 0 do
		term.clear()
		term.setCursorPos(1,1)
		write("Minuten bis zum naechsten Abbau:")
		write(countdown)
		os.sleep(60)
		countdown = countdown - 1
	end

	while mine == true do

		turtle.forward()

		if colactive == true then
			col = col + 1
		end

		if turtle.detectDown() == true then
			turtle.digDown()
			i = 1
			repeat
				turtle.select(i)
				turtle.placeDown()
				if turtle.detectDown == true then
					return
				end
				i = i + 1
			until i == 17
			i = 1
		end

		if turtle.detect() == true then
			colactive = false
			if right == false then
				right = true
				turtle.turnRight()
				if turtle.detect() == true then
					turtle.turnRight()
					turtle.turnRight()
					while turtle.detect() == false do
						turtle.forward()
					end
					turtle.turnLeft()
					while col ~= 0 do
						col = col - 1
						turtle.forward()
					end
					return
					else
					turtle.forward()
					turtle.turnRight()
				end
				else
				right = false
				turtle.turnLeft()

				if turtle.detect() == true then
					turtle.turnLeft()
					turtle.turnLeft()
					while turtle.detect() == false do
						turtle.forward()
					end
					turtle.turnLeft()
					turtle.forward()
					return
					else
					turtle.forward()
					turtle.turnLeft()
				end
			end
		end
	end
	i = 1
	repeat
		turtle.select(i)
		turtle.drop()
	until i == 17
	turtle.turnLeft()
	turtle.turnLeft()
end