function farm (xLength, yLength)
	for x = 1, xLength, 1 do
		for y = 1, yLength, 1 do
			nineXNine(9,9)
			if y ~= yLength then
				goToNextJobY()
			end
		end
		if x ~= xLength then
			goToNextJobX(yLength)
		end
	end
	goHomeBig(xLength, yLength)
end

function goToNextJobX(yLength)
	turtle.turnRight()
	turtle.turnRight()
	goForward((yLength-1)*10)
	turtle.turnLeft()
	goForward(10)
	turtle.turnLeft()

end

function goToNextJobY()
	goForward(10)
end

function goHomeBig(xLength, yLength)
	turtle.turnRight()
	turtle.turnRight()
	goForward((yLength-1)*10)
	turtle.turnRight()
	goForward((xLength-1)*10)
	turtle.turnRight()
end

function nineXNine(targetLength, targetWidth)

	for width = 1, targetWidth, 1 do
		processLine(targetLength)

		if width == targetWidth then
			goHome(targetLength, targetWidth)
		elseif width%2 == 1 then
			turnRight()
			nextMoveIsRight = false
		else
			turnLeft()
			nextMoveIsRight = true
		end
	end
end

function processLine(targetLength)
	doWork()
	for length = 1, targetLength-1, 1 do
		turtle.forward()
		doWork()
	end
end

function doWork()
	selectSeeds()
	turtle.digDown()
	turtle.placeDown()
end

function selectSeeds()
end

function turnRight()
	turtle.turnRight()
	turtle.forward()
	turtle.turnRight()
end

function turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnLeft()
end

function turnAround()
	turtle.turnLeft()
	turtle.turnLeft()
end

function goForward(lengthToGo)
	for lengthWent = 1, lengthToGo, 1 do
	turtle.forward()
	end
end

function goHome(targetLength, targetWidth)
	if(targetWidth%2 == 1) then
		turnAround()
		goForward(targetLength-1)
	end

	turtle.turnRight()
	goForward(targetWidth-1)
	turtle.turnRight()
end

farm(3, 3)