farmer Final

local arg1, arg2 = ...
limX = tonumber(arg1)
limZ = tonumber(arg2)
area = limX * limZ
relX = 0
relZ = 0
facing = 0

function plant()
	seedSlot = selectSeeds()
	if seeds == 0
	then
		print("Seeds not found.")
		return false
	end
	turtle.select(seedSlot)
	placed = turtle.placeDown()
	return placed
end

function selectSeeds()
	for i = 1, 16, 1
	do
		turtle.select(i)
		data = turtle.getItemDetail()
		if data
		then
			name = turtle.getItemDetail().name
			if name == "minecraft:wheat_seeds"
			then
				return i
			end
		end
	end
	return 0
end

function harvest()
	if turtle.detectDown()
	then
		local success, data = turtle.inspectDown()
		if data.name == "minecraft:wheat"
		then
			if data.metadata == 7
			then
				turtle.digDown()
			end
		end
	end
end

function turnTo(dir)
	if facing > dir
	then
		turtle.turnRight()
		facing = facing - 1
		turnTo(dir)
	end
	if facing < dir
	then
		turtle.turnLeft()
		facing = facing + 1
		turnTo(dir)
	end
	if facing == dir
	then
		return
	end
end

function goUp()
	turnTo(0)
	turtle.forward()
	relZ = relZ + 1
end

function goDown()
	turnTo(2)
	turtle.forward()
	relZ = relZ - 1
end

function goLeft()
	turnTo(1)
	turtle.forward()
	relX = relX - 1
end

function goRight()
	turnTo(3)
	turtle.forward()
	relX = relX + 1
end

function printPos()
	print("Walking Pos (", tostring(relX), ", ", tostring(relZ), ").\n")
end

function walkField()
	while relZ < limZ
	do
		goUp()
		printPos()
		harvest()
		plant()

		while relX < limX
		do
			goRight()
			printPos()
			harvest()
			plant()
		end

		if relZ < limZ
		then

			goUp()
			printPos()
			harvest()
			plant()

			while relX > 1
			do
				goLeft()
				printPos()
				harvest()
				plant()
			end
		end
	end
end

function returnToOrigin()
	while relX > 0
	do
		goLeft()
	end
	while relZ > 0
	do
		goDown()
	end
end

function depositItems()
	for i = 1, 16, 1
	do
		turtle.select(i)
		turtle.drop()
	end
end

function grabSeeds()
	i = 1
	remaining = area
	while remaining > 64
	do
		turtle.select(i)
		turtle.suckDown(64)
		i = i + 1
		remaining = remaining - 64
	end
	turtle.suckDown(remaining)
end

function feedFuel()
	print("Refueling...")
	turnTo(3)
	while (turtle.getFuelLevel() < 2000)
	do
		turtle.suck(4)
		turtle.refuel(4)
	end
	print("Complete.\n")
end

function execute()
	feedFuel()
	grabSeeds()
	walkField()
	returnToOrigin()
	depositItems()
	turnTo(0)
end

function main()
	while (true)
	do
		os.queueEvent("fakeEvent")
		os.pullEvent()
		if redstone.getInput("left")
		then
			execute()
		end
	end
end

main()