temp

robot = require("robot")
component = require("component")
os = require("os")

nav = component.navigation

waitTime = 30  -- how long to wait after unloading
function unload()

    for i = 1, 16 do
        robot.select(i)
        robot.dropUp()
    end
    robot.select(1)
end

function forwardFarm()
    local isMoved = false
    robot.swingDown()
    robot.placeDown()
    while isMoved ~= true do
        isMoved = robot.forward()
    end
end
function turnRight(dir)

	while dir ~= nav.getFacing() do
		robot.turnRight()
	end
end
function turnLeft(dir)
	while dir ~= nav.getFacing() do
		robot.turnLeft()
	end
end

function doTurn()
	local x, y, z = nav.getPosition()
	local dir = nav.getFacing()
	local temp = 0
	local face = dir
	if z == 44.5 then
		temp = math.floor(x)
		temp = temp % 2
		if temp == 1 then
			face = 4
		else
			face = 2
		end
		turnRight(face)
	elseif z == 29.5 then
		temp = math.floor(x)
		temp = temp % 2
		if x ~= -65.5 or x ~= -49.5 then
			if temp == 0 then
				face = 4
			else
				face = 3
			end
		end
		turnLeft(face)
	elseif z == 28.5 then
		if x == -65.5 then
			face = 5
		elseif x == -49.5 then
			face = 3
		end
		turnRight(face)
	end

end

while true do
	robot.forward()
	doTurn()
end